Nowe zasoby w Repozytorium PK http://suw.biblos.pk.edu.pl/ Biblioteka Politechniki Krakowskiej lipinska@biblos.pk.edu.pl 60 <![CDATA[Rozwój przestrzenny Lipnicy Murowanej w czasach zaborów w świetle austriackich map wojskowych]]> Tue, 22 Oct 2019 17:11:24 +0200 Budziakowski, Mateusz
rodzaj: artykuł w czasopiśmie
Abstrakt: Dzięki zachowanym austriackim mapom wojskowym z XVIII i XIX wieku istnieje możliwość zbadania zmian przestrzennych, jakie miały miejsce m.in. na terenach Polski południowej. Szczególnie cenna jest tzw. mapa Miega – opracowanie wykonane w skali 1:28 800 (jeden cal = 400 sążni), obejmujące swoim zakresem teren Cesarstwa Austriackiego, sięgającego w tamtym okresie od Wenecji po Warszawę. Stanowi ona znakomitą bazę i punkt wyjściowy badań z zakresu historii urbanistyki – badań, które nie doczekały się do tej pory szerokiej realizacji. Niniejszy artykuł dołącza do nielicznych tekstów tego typu.]]>
<![CDATA[Źle urodzone : reportaże o architekturze PRL-u]]> Tue, 22 Oct 2019 16:53:59 +0200 Springer, Filip
rodzaj: książka
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<![CDATA[Multichannel queueing behaviour in urban bicycle traffic]]> Tue, 22 Oct 2019 16:07:34 +0200 Kucharski, Rafał; Drabicki, Arkadiusz; Żyłka, Klaudia; Szarata, Andrzej
rodzaj: artykuł w czasopiśmie
Abstrakt: The objective of this paper is to propose a method to analyse and describe cyclists’ behaviour at signalized intersections with specific focus on the multichannel (multi-lane) queue phenomenon. As we observed, cyclists form queues without a fixed-lane and FIFO discipline, for which the classical, car-oriented analytical approach becomes insufficient. Cyclists’ multichannel queueing behaviour is common and characterized by substantial degree of variability, especially in case of shorter queues which emerge regularly at cycle crossings. Although cyclist behaviour has been widely studied by transportation research community, their queueing behaviour picture is still incomplete. Namely, there is no method addressed to analyse the full scope of these phenomena and to quantify their impact on the cyclist queue performance. To bridge this gap, we introduce the technique to observe multichannel queues and report relevant observations, which we then complement with a methodological framework to analyse obtained results and provide a complete multichannel queue description. We video-record cyclists as they enqueue to one of multiple channels, form the queue and smoothly merge into a single lane again as the queue discharges. We apply the method to analyse results from a pilot study of 160 cyclists forming 50 queues in the city of Krakow, Poland. The proposed method allows us to analyse and quantify the observed queue performance and its characteristics: the number of channels, their emergence process, channel and queue lengths, discharge process with FIFO violations, starting and discharging times. Findings from pilot study reveal that both queue length and discharge times strongly depend on queue formation process. The contribution of this paper is the method to describe multichannel cyclist queueing behaviour, enriching current picture of bicycle flow and cyclists’ behaviour. Since the method has been developed on relatively short queues (up to 10 cyclists), findings included in this paper primarily refer to such queue sizes. Nonetheless, the method is formulated in a generic way, applicable also for longer bicycle queues. Possible practical implications are new estimates for queue lengths and discharge times-useful for bicycle infrastructure design and traffic engineering purposes. ]]>
<![CDATA[Metoda wyznaczania momentu obciążenia silnika indukcyjnego na stanowisku pracy poprzez pomiar strumienia poosiowego]]> Tue, 22 Oct 2019 16:02:27 +0200 Petryna, Janusz; Sułowicz, Maciej; Duda, Arkadiusz; Ławrowski, Zbigniew; Guziec, Krzysztof
rodzaj: artykuł w czasopiśmie
Abstrakt: W pracy przedstawiono metodę wyznaczania momentu obciążenia silnika indukcyjnego opartą na pomiarze strumienia poosiowego. Pomiar wykonano na stanowisku pracy silnika w elektrowni, zaś w stacji prób podczas obciążania uzyskano charakterystyki ilustrujące zależności momentu od strumienia i od prędkości obrotowej. Zaproponowano sposób wykorzystania pojedynczego pomiaru do oszacowania momentu. Proponowana metoda jest stosunkowo prosta do realizacji i pozwala na w pełni bezinwazyjne wyznaczanie momentu obciążenia silników indukcyjnych. Po zautomatyzowaniu pomiarów może ona zostać wykorzystana w systemach monitoringu stanu maszyny działających online.]]>
<![CDATA[Architecture students gain experience from open-air workshops in drawing and painting]]> Tue, 22 Oct 2019 15:59:20 +0200 Domarzewski, Andrzej
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The aim of this article is to show correlations and relationships between the art of drawing and painting, and the art of architectural design in the context of educating students in the Faculty of Architecture at Cracow University of Technology, Kraków, Poland. The scope of the study covers obligatory open-air workshops for students after the first year of studies. With skilful and smart implementation of the study programme, it is possible to help develop the imagination and creative awareness of architecture students, and consequently to provide scientific and experimental foundations for the future architect-designer-artist. The study was based on research and analysis of selected materials published in the field of education, and the art of drawing and painting. The conclusions suggest that the ability to use drawings and colour fluently is of importance in the education of architects. The research on the topic can increase interest in the creative duties of both students and task-conscious educators.]]>
<![CDATA[Cationic photoinitiators]]> Tue, 22 Oct 2019 14:37:27 +0200 Ortyl, J.
rodzaj: rozdział/fragment książki
Abstrakt: General interest in the use of cationic photopolymerization instead of free-radical photopolymerization for preparation of polymer coatings is still growing. This generates the need for better understanding of the subtle nuances of this method and the need for development of new, more efficient one-component cationic photoinitiators, because the photopolymerization speed depends on their performance. This chapter presents the structural and kinetic aspects of using the new one-component photoinitiators for cationic photopolymerization processes of monomers. Especially, long-wavelength cationic photoinitiators are discussed because they have attracted growing interest owing to the wide applications of LED sources.]]>
<![CDATA[Reduction of vibration in railway surfaces]]> Tue, 22 Oct 2019 14:29:43 +0200 Kozioł, Krzysztof
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Presented paper concerns the problem of reduction of the impact of vibrations generated by the metro on neighboring buildings and people staying inside. The issue of acceptable levels of these impacts in accordance with Polish standards and ISO (International Standard Organization) has been discussed. Basing on the example of research carried out by the author in the Warsaw Metro and his experience acquired during the design of vibroisolations of the final section of the first subway line in Warsaw, methods of testing dynamic interactions and predicting their level using FEM and simulation calculations on models were presened.]]>
<![CDATA[Spherical cavity in the layer subjected to dynamic load]]> Tue, 22 Oct 2019 14:24:06 +0200 Koziol, Piotr; Mares, Cristinel; Pilecki, Rafał
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The problem of wave motion with spherical symmetry is analysed. For this purpose, a spherical cavity surrounded by layer is considered as a mathematical model which can be used for modelling various phenomena in solid mechanics. The additional layer is also spherical and the outer space is described as unbounded medium. All layers are isotropic, homogeneous and linearly elastic, although the presented formulation allows inclusion of weak nonlinearities. Analytical solutions for displacement and stresses (radial and circumferential) are presented along with some discussion of possible model extensions.]]>
<![CDATA[Analytical modelling of rail track to account for nonlinear properties of structure]]> Tue, 22 Oct 2019 13:44:19 +0200 Koziol, Piotr
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: It is known that nonlinear and stochastic properties of structures should be taken into account in the analysis of their dynamic behaviour. This statement remains valid for railway infrastructure, where trains acting on rail track cause their strong dynamic variations. It becomes even more important when one deals with high frequencies and speeds of trains. The recent HSR networks need new technologies and materials in order to increase train speeds and, in the same time, to protect the environment against negative factors produced by operational lines. Therefore all important aspects of new railway constructions should be analysed, especially in terms of mechanical vibrations and noise attenuation. The elements of rail tracks, such as sleepers, under sleeper pads, rail dampers, fastening systems and others, have nonlinear properties. Their influence on dynamic behaviour of railway tracks is still insufficiently researched. For this purpose, various analytical models are proposed which can give a new insight into detailed dynamic characteristics of such structures.]]>
<![CDATA[A high school bridging course to enhance readiness for architectural education]]> Tue, 22 Oct 2019 13:38:52 +0200 Avsec, Stanislav; Jagiełło-Kowalczyk, Magdalena
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Several technology and engineering universities are facing a threefold problem in a lack of students, underprepared freshmen and an increase in dropouts from study. This incurs additional costs to the education system, and can result in a lower quality of studies when instructors adjust teaching/learning methods. One way to reduce such negative consequences to education is a high school bridging course. For the purposes of the study outlined in this article, the Faculty of Architecture at Cracow University of Technology organised a course and provided interventions that helped high school students aspire to, prepare for, and achieve architectural education enrolment. Reported in this article is the effectiveness of the bridging course conducted in the study year 2017/18. Findings from this study suggest that an effective architectural education bridge course: a) improves students’ self-efficacy; b) enhances students’ aspirations and interest in technology and engineering studies; c) increases design ability needed for architectural education; d) enables innovative learning; and e) may improve university entrance levels and procedures.]]>
<![CDATA[Homogeneity of sol-gel derived silica-titania waveguide films – Spectroscopic and AFM studies]]> Tue, 22 Oct 2019 13:37:53 +0200 Karasiński, P.; Domanowska, A.; Gondek, E.; Sikora, A.; Tyszkiewicz, C.; Skolik, M.
rodzaj: artykuł w czasopiśmie
Abstrakt: The aim of the present work was to investigate the influence of textures consisting of Laser-Induced Periodic Surface Structures (LIPSS) on the friction coefficient of silicon under unlubricated conditions, using nanoscale friction tests. The tests were performed on 〈1 1 1〉 single crystal wafers of p-doped silicon. Surface texturing was performed by a direct writing technique, using 560 fs pulses of 1030 nm wavelength radiation and parameters allowing large areas with a uniform LIPSS texture to be obtained. The tribological tests were performed in air using a ball-on-flat nanotribometer with 3 mm diameter sapphire balls as counterbodies. The wear scars were analyzed by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The friction coefficient of polished Si remains approximately constant during the tests and is independent of the applied load, with values in the range 0.12–0.14. The morphology of the wear scars indicated that the predominant material removal mechanism is mild oxidative wear, independently of the testing conditions used, which explains the low values of the friction coefficient measured. The LIPSS texture leads to an increase of the friction coefficient, in particular in the perpendicular sliding direction. The friction coefficient increases with the applied load and is larger for the perpendicular sliding direction than for the parallel sliding direction, the difference increasing with increasing load. The morphology of the wear scars showed that the predominant wear regime remains oxidative wear, but significant contributions of plastic deformation and ploughing appear. This plastic deformation in Si, which is brittle at room temperature, shows that significant surface heating is being caused by the interaction of the asperities in motion and under load. This temperature increase also accelerates surface oxidation and increases the wear rate. Surface temperature calculations showed that the temperature increase is larger for the perpendicular sliding direction than for the parallel one, which explains the difference of friction coefficient observed in the two directions.]]>
<![CDATA[Flow analysis of a switching valve with innovative poppet head geometry by means of CFD method]]> Tue, 22 Oct 2019 12:50:03 +0200 Filo, Grzegorz; Lisowski, Edward; Rajda, Janusz
rodzaj: artykuł w czasopiśmie
Abstrakt: The article presents an analysis of flow through a differential switching valve installed inside a throttle-check valve block. The valve is mounted in a sandwich type arrangement together with a control valve according to ISO 4401 standard. This type of block arrangement is popular and commonly used in hydraulic drive systems. The development of a typical throttle-check valve using a differential switching valve makes it possible to add a secondary fluid stream and thus increase the inflow rate to an actuator, which is particularly important in fixed-delivery pump systems. Due to the limited range of valve dimensions and the need to adapt flow paths to connection ports, channels of complex geometry are made inside the valve block. Therefore, the main aim of the work was to properly profile geometry of the differential switching valve spool in order to obtain a smooth opening in the entire displacement range. A 3D model of flow paths was built and CFD analysis was carried out. The obtained results of numerical simulations have been confirmed experimentally on a test bench. The CFD analysis allowed values of velocity and pressure profiles as well as axial flow force acting on the spool to be determined. The proposed new shapes of the spool head geometry significantly increase the spool head operating range. Although flow rate in the initial phase of switching valve opening was reduced, the amplitude of fluid flow fluctuations also decreased.]]>
<![CDATA[Effect of addition of limestone powder on fly ash based geopolymer cured at 80°C and at ambient temperature ]]> Tue, 22 Oct 2019 09:20:29 +0200 Sitarz, Mateusz; Hager, Izabela
rodzaj: materiały konferencyjne w książce
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<![CDATA[Przykłady wzmacniania konstrukcji drewnianych]]> Mon, 21 Oct 2019 18:14:17 +0200 Kram, Dorota; Kochański, Tomasz
rodzaj: artykuł w czasopiśmie
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<![CDATA[Influence of location of measurement point on evaluation of human perception of vibration]]> Mon, 21 Oct 2019 16:32:56 +0200 Kowalska-Koczwara, Alicja
rodzaj: artykuł w czasopiśmie
Abstrakt: Human perception of vibration is very subjective parameter which depends among others on age, sex or even nationality. There are three main methods of assessment of human perception of vibration according to national standards which differ from each other. All three methods are clearly described in this paper and their advantages and disadvantages are shown. Evaluation methods are helpful in diagnosis and design of the building when they are used properly. One of interesting aspect of quality of measurements is localization of measurement points. The choice of localization of measurement points could have significant influence on result of evaluation of human response to vibration. International and national standards are compatible in this matter – measurement points should be localized in the place of human vibration perception. It means that should be located in the middle of the floor. Sometimes it is difficult to determine the exact center of the floor, especially when building has irregular construction. In this paper influence of localization of measurement point on human perception of vibration is investigated and center zone in which measurement results are proper is determined. In-situ measurements were made to investigate the problem of localization of human vibration perception in buildings.]]>
<![CDATA[Risk assessment of additional works in railway construction investments using the Bayes network]]> Mon, 21 Oct 2019 16:11:51 +0200 Leśniak, Agnieszka; Janowiec, Filip
rodzaj: artykuł w czasopiśmie
Abstrakt: The implementation of railway infrastructure construction projects including sustainable development goals is a complex process characterized by a significant extension of individual investment stages. The need for additional works has a big impact on construction railway projects, representing a risk which is the result of many different factors. During the execution of works, both the design assumptions and the conditions of the project’s implementation can be changed. An attempt to eliminate potential risks is a key element of construction projects. The article proposes a proprietary management method for the risk of additional works in railway projects. A methodology for creating risk management strategies using a standard algorithm that includes risk identification, risk analysis, and risk assessment is presented. The original elements of the work include risk identification followed by analysis using Bayesian networks. Using the example of a scenario of events, it is shown that a well-programmed network can be used to implement risk mitigation methods. Using the network, it is possible to compare different ways to reduce risk, check the effect of reducing the risk factors, and determine a satisfactory level of effects, e.g., increased financial resources as a result of additional works.]]>
<![CDATA[Uwarunkowania funkcjonowania przewoźników na rynku usług transportu drogowego. Cz. 1]]> Mon, 21 Oct 2019 15:23:07 +0200 rodzaj: książka
Abstrakt: Zakres tej wiedzy obejmuje zagadnienia związane z rynkiem transportowym polskim i europejskim, zarządzaniem przedsiębiorstwem transportowym, czy organizowaniem procesu przewozowego.]]>
<![CDATA[Trade-off games and methods in participatory design]]> Mon, 21 Oct 2019 15:09:44 +0200 Lasiewicz-Sych, Angelika
rodzaj: artykuł w czasopiśmie
Abstrakt: Based on a widely recognized concept of simulation game, trade-off game methodology has been creatively developed in some architectural and urban citizen-initiated projects for educative goals or pre-design community activities. This method can also be a tool for design decision making because it enables effective measurement of users’ preferences in the process of simulating real constraints. The paper presents the state of knowledge and research experiment to show the actual expectations of users in the scope of the housing environment.]]>
<![CDATA[The ratio of response spectra from seismic-type free-field and building foundation vibrations: the influence of rockburst parameters and simple models of kinematic soil-structure interaction]]> Mon, 21 Oct 2019 14:46:32 +0200 Kuzniar, Krystyna; Tatara, Tadeusz
rodzaj: artykuł w czasopiśmie
Abstrakt: Mining-related seismicity is a significant problem in regions with the exploitation in under-ground mines. Despite the fact that mining tremors result from human activity and are classified as so-called paraseismic shocks, as with earthquakes, they are random events. Moreover, these rockbursts could cause significant damage to surface structures, including buildings. This paper deals with the analysis of experimentally obtained results in terms of the differences between the mine-induced vibrations described by the response spectra from the free-field near a given building and the simultaneously recorded vibrations in the building foundations. The influences of epicentral distance, mining tremor energy and the value of peak ground acceleration on the curves of free-field — foundation response spectra ratio were studied. The impact of the type of building on the transmission of response spec-tra from the free-field vibrations to the building foundations was also analysed for three types of apartment buildings (low-rise, medium-rise, high-rise). The usefulness of the approximate models of the phenomenon of soil-structure interaction during earthquakes proposed in the literature is also estimated in this paper in specific instances of mining tremors. Furthermore, the study presents original, simple, empirical models for the evalua-tion of the differences in the response spectra originating from free-field and building foun-dation vibrations in the mining region.]]>
<![CDATA[Application of GPR and ERT methods for recognizing of gypsum deposits in urban areas]]> Mon, 21 Oct 2019 14:05:11 +0200 Gołębiowski, Tomisław ; Jarosińska, Elżbieta
rodzaj: artykuł w czasopiśmie
Abstrakt: This paper presents the selected results of GPR (ground penetrating radar) and ERT (electrical resistivity tomography) surveys carried out on the sites in Poland where shallow karst forms were found in gypsum deposits. The aim of the surveys was the noninvasive detection of karst forms as well as weathered and fractured bedrock which may threaten the stability of the surface and, consequently, may cause damage to buildings, as well as overground and underground infrastructure. The geophysical surveys were conducted at a depth of only a few meters, i.e., to the depth of buildings foundations. GPR surveys were carried out in short-offset reflection profiling mode with standard orientation of the antennae set; however, on one site, different orientations of antennae were tested. During ERT surveys, different measurement arrays were applied in order to analyze which array was optimal for the detection of karst forms as well as weathered and fractured bedrock. Complex inter-pretation of geophysical surveys resulted in reduced ambiguity and revealed some regions, dangerous for surface stability. Due to the fact that gypsum deposits were investigated to the depth of maximum 10 m; therefore, hydrological processes were analyzed in the paper instead of hydrogeological processes.]]>
<![CDATA[Analysis of additional works in completed railway construction projects]]> Mon, 21 Oct 2019 13:08:47 +0200 Leśniak, Agnieszka; Janowiec, Filip
rodzaj: artykuł w czasopiśmie
Abstrakt: Analysis of additional works in completed railway construction projects. The railway construction investments are characterized by a significant extension of individual phases and an increased number of entities participating in the construction investment process. Despite the use of many modern methods and techniques unforeseen phenomena and events which may occur during the execution of the investment cannot be excluded. All unexpected situations usually initiate consequences in the form of additional workload and costs not included by the contractor and longer duration of works. This fact is commonly referred to as the occurrence of the so-called additional works. The paper presents the results of research concerning additional works occurring during the realization of railway construction projects performed in southern Poland. The analysis was based on data which concerned projects completed in the period from 1 January 2012 to 31 December 2018.]]>
<![CDATA[Identification of the acoustic parameters for the variable cross-section element. Numerical and analytical methods comparison]]> Mon, 21 Oct 2019 12:20:49 +0200 Mlynarczyk, Przemyslaw
rodzaj: materiały konferencyjne w książce
Abstrakt: Nowadays still it is a problem to introduce transfer matrix of the nozzle with variable geometry to the classical Helmholtz model to analyze it influence on the wholesystem. In the past several iden-tification methods were presented but some of them are too complicated for practical applications. Such a method must be reliable, easy and can’t be time-consuming. Two methods described in the literature meet all these conditions: the CFD-based identification method and analytical extension to the transfer matrix method. These methodscan be useful also to recognize the resonant frequencies for variable cross-sectiongeometries. From the other hand, nowadays the commercial software can beused to calculate various acoustic parameters for the variable cross-section elements. In this pa-per the identification of the generalized transfer matrix comparison for the nozzle-type geometry is presentedfor the analytical and CFD-basedmethod. Additionally the first resonant frequencyob-tained using three different methods are compared. ]]>
<![CDATA[Schoolchildren in Poland learn vital skills from a Young Architects programme]]> Mon, 21 Oct 2019 11:40:43 +0200 Jagiełło-Kowalczyk, Magdalena; Żabicka, Agnieszka; Avsec, Stanislav
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The primary school programme discussed in this article has elements of spatial education limited in scope. A primary school person does not learn systematically the principles of the valuable shaping of architectural and urban space. This deficiency is difficult to rectify in high school, where the topic is presented selectively and fragmentarily. As a result, the majority of adults are not able to participate in public debate on shaping their environment. The spatial education programme, Young Architects, organised for separate age groups at the early, middle and late school educational levels has been designed to address this deficiency. For the purposes of this study, a sample of 61 students was used. Students were surveyed before and after a workshop, where criterion-based cognitive, psychomotor and interpersonal skills were assessed. It was found through the study outlined in this article that the competencies of students increased after participation in the programme.]]>
<![CDATA[Impact of selected sources of transport vibrations on the perception of vibrations by people in buildings]]> Mon, 21 Oct 2019 11:36:28 +0200 Kowalska-Koczwara, Alicja
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Vibrations propagating through the soil into the building can not only be harmful to the building structure or cause its accelerated wear, but can also effect on the vibrational comfort in the rooms. They can also be annoying for residents and building users, and in extreme cases can lead to sleep disorders, headaches and neurotic conditions. Especially vibrations from the low frequency range from 5 to 25 Hz are undesirable, because there are resonance frequencies of human internal organs in this frequency range. The human perception of vibrations in buildings, despite many researches made in the past, despite standards and requirements in this area, is still a topic not fully understood mainly due to the subjective nature of the perception of vibrations by various people. It is widely known that the type of transport vibration source has an impact on human perception. Vibrations generated by above-ground sources are more felt on the upper floors as opposed to vibrations generated from the underground. In this paper three types of transport vibrations are analyzed on one chosen building located in Warsaw. Human perception of vibration is evaluated according to two methods: root mean squared (RMS) and vibration dose value (VDV).]]>
<![CDATA[Measurement-interpretation methodology for the evaluation of human perception of the vibration in buildings]]> Mon, 21 Oct 2019 11:27:12 +0200 Kowalska-Koczwara, Alicja
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The article contains guidelines related to the proper performance and analysis of the measurements of human perception of the vibration in buildings. The recommendations apply to both hardware requirements and the selection of measurement points as well as the analysis of the recorded signal. The buildings located in the so-called dynamic impact zone are the subjects of the analysis of the influence of vibrations on people in the buildings. In this article, the range of dynamic impact zones from different dynamic excitation is listed. An extremely important aspect of the measurements of the human perception of the vibrations in buildings is the selection of the location of measurement points. In different national standards, there are different guidelines which are compared in the article. The most proper locations are investigated. A separate issue is the selection of the measuring range and the selection of corrective filters for the analysis. New trends in this matter are shown and requirements according to the different standards are compared. A separate problem is determining the duration time of vibrations, which should be taken into analysis. It is worth noticing that the choice of duration can have a significant influence on all the results of the analysis of human perception of the vibration in buildings and many standards do not give any recommendations in this subject. The last problem of the methodology of measurements of human perception of the vibrations associated with the analysis of the measurement data is the sampling frequency of the recorded signal. The so-called N-qyst frequency has been shown in the paper and explained in a specific example.]]>
<![CDATA[Vectorized implementation of the FEM numerical integration algorithm on a modern CPU]]> Mon, 21 Oct 2019 11:19:16 +0200 Krużel, Filip
rodzaj: materiały konferencyjne w książce
Abstrakt: The main aim of this study is to answer the question: how to effectively implement the creation of the finite element stiffness matrix in parallel simulations of Finite Element Method using the full advantages of modern multiprocessors such as parallelization combined with vectorization. In this work, an efficient method for implementation of a Finite Element Method numerical integration algorithm on a modern Intel Haswell CPU architecture was developed. This algorithm was chosen, due to its non-trivial structure and the fact that its optimization is often omitted in research in favour of accelerating the other phases of FEM. Tests included two types of tasks to solve, with the use of two types of approximation and two types of finite elements. During this study, several methods for the implementation of the chosen algorithm was investigated, including Intel Cilk Plus, Intel Intrinsics and other computing techniques. Results were compared with an older Sandy Bridge architecture, showing a significant impact of vectorization and large cache on the performance of the modern CPUs. Our research gives suggestions for choosing the optimal design of algorithms and effectively using all of the features of the modern CPUs.]]>
<![CDATA[Influence of different types of trains on human in the buildings]]> Mon, 21 Oct 2019 11:16:51 +0200 Pachla, Filip; Kowalska-Koczwara, Alicja
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The impact of vibrations on railway lines for people in buildings can cause discomfort. The problem has recently become particularly important due to the increase in the number of objects built within the range of vibrations from the railway line. The article presents selected results of measurements of vibrations from the railway line to a single-family brick building and people staying in them. The presented methodology and test results may be useful in the future in the modernization of railway lines or the development of areas near railway lines.]]>
<![CDATA[Transmission of vibrations from the ground to the foundation from the movement of passenger trains]]> Mon, 21 Oct 2019 11:03:58 +0200 Pachla, Filip
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The article presents the results of vibration measurements from passenger train journeys from the ground to the building foundation. The vibration acceleration courses from the Pendolino passenger train were used for the analysis. The measurements were carried out in a single-family brick building at the existing railway line. The measurement results can be used in the future to analyze buildings located at railway lines where passenger traffic takes place. The results of the analyzes can also be useful in assessing the impact of vibrations from the railway line on people staying in buildings.]]>
<![CDATA[Architektoniczna aktywność elewacji]]> Mon, 21 Oct 2019 11:01:01 +0200 Gaczoł, Andrzej
rodzaj: materiały konferencyjne w czasopiśmie
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<![CDATA[The influence of wind speed to the temperature inside the wall in the winter season]]> Mon, 21 Oct 2019 07:28:18 +0200 Antonik-Popiołek, Patrycja; Fedorczak-Cisak, Małgorzata; Furtak, Marcin
rodzaj: materiały konferencyjne w książce
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<![CDATA[The community of mathematicians in Vilnius during the youth of professor Krzyżański]]> Sat, 19 Oct 2019 12:32:22 +0200 Domoradzki, Stanisław
rodzaj: opis bibliograficzny rozdziału w książce
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<![CDATA[Solving differential equations through the use of differential inequalities]]> Sat, 19 Oct 2019 12:31:15 +0200 Łojczyk-Królikiewicz, Irena
rodzaj: opis bibliograficzny rozdziału w książce
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<![CDATA[About the research collaboration between professor Feliks Barański and the Institute of Mathematics at WSP in Cracow (currently Pedagogical University in Cracow)]]> Sat, 19 Oct 2019 12:30:28 +0200 Wachnicki, Eugeniusz
rodzaj: opis bibliograficzny rozdziału w książce
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<![CDATA[Feliks Michał Barański (1915-2006) – life and work]]> Sat, 19 Oct 2019 12:29:41 +0200 Koroński, Jan
rodzaj: opis bibliograficzny rozdziału w książce
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<![CDATA[Professor Godzimir Mirosław Krzyżański (31 X 1907 - 1 XII 1965) – life and work]]> Sat, 19 Oct 2019 12:28:46 +0200 Koroński, Jan
rodzaj: opis bibliograficzny rozdziału w książce
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<![CDATA[A scientific and memorial conference to celebrate the 100th anniversary of birth of Professor Feliks Michał Barański]]> Sat, 19 Oct 2019 12:26:53 +0200 Koroński, Jan
rodzaj: opis bibliograficzny rozdziału w książce
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<![CDATA[Robotyka na progu III Tysiąclecia. Jak w wyobraźni i świadomości człowieka kształtowała się wizja robota?]]> Fri, 18 Oct 2019 14:16:19 +0200 Kluszczyński, Krzysztof
rodzaj: artykuł w czasopiśmie
Abstrakt: Artykuł prezentuje krótką historię rozwoju robotyki ze społecznego i kulturowego punktu widzenia. Unaocznia to, że skonstruowanie pierwszego robota w XX wieku wymagało wpierw wielu przełomów intelektualnych, dokonujących się stopniowo na przestrzeni setek lat, jak też powolnego dojrzewania do tego wynalazku ludzkiej świadomości.]]>
<![CDATA[Nośność masztu aluminiowego po zerwaniu odciągu]]> Fri, 18 Oct 2019 13:10:06 +0200 Kmiecik, Kamil
rodzaj: rozdział/fragment książki
Abstrakt: W artykule przedstawiono analizę nośności konstrukcji masztu aluminiowego w sytuacji wyjątkowej jaką jest zerwanie odciągu. Do szacowania nośności masztu aluminiowego z odciągami zastosowano procedurę zachowawczą zgodną z europejskimi normami do projektowania konstrukcji. Zgodnie z tą procedurą do modelu masztu przyłożono składową poziomą siły działającej w odciągu przed zerwaniem. Otrzymane siły wewnętrzne zwiększa się o 30%. Następnie zweryfikowano nośność masztu po zerwaniu odciągu. Zamieszczone procedury oraz wnioski mają znaczenie praktyczne, które mogą być pomocne w projektowaniu kratowych masztów z odciągami.]]>
<![CDATA[Analiza nośności masztu aluminiowego cz. 2 – wymiarowanie]]> Fri, 18 Oct 2019 13:04:37 +0200 Kmiecik, Kamil
rodzaj: rozdział/fragment książki
Abstrakt: W artykule przedstawiono analizę nośności konstrukcji masztu aluminiowego. W pierwszej kolejności wyznaczono charakterystyki wytrzymałościowe stopu aluminium, z którego wykonano maszt. Następnie wykonano trójwymiarowy model numeryczny masztu. Model wykonano używając elementów prętowych oraz kabli ze wstępnym naciągiem. Następnie wyznaczono najbardziej niekorzystne siły wewnętrzne w elementach konstrukcyjnych masztu aluminiowego. Następnie dokonano analizy nośności elementów prętowych, z których maszt jest wykonany: krawężniki φ90x5, pręt podporowy φ210x8 oraz pręty wykratowania φ35x3. Wyznaczono nośność na ściskanie oraz nośność w strefie HAZ dla danych elementów. Następnie przedstawiono procedury obliczeniowe nośności odciągów. Zamieszczone procedury oraz wnioski mają znaczenie praktyczne, które mogą być pomocne w projektowaniu kratowych masztów z odciągami.]]>
<![CDATA[Analiza nośności masztu aluminiowego cz. 1 – obciążenia]]> Fri, 18 Oct 2019 13:00:54 +0200 Kmiecik, Kamil
rodzaj: rozdział/fragment książki
Abstrakt: W artykule przedstawiono analizę oddziaływań stałych i klimatycznych (wiatr i oblodzenie) na konstrukcję masztu aluminiowego. W pierwszej kolejności wyznaczono obciążenia stałe. Następnie dokonano analizy obciążenia wiatrem, uwzględniając jego dynamiczne oddziaływanie. Zgodnie z normami do projektowania dynamiczne oddziaływanie wiatru zastąpiono równoważną metodą statyczną. Następnie wyznaczono oddziaływanie oblodzeniem. W związku ze zwiększonym oporem aerodynamicznym uwzględniono kombinację oblodzenia z wiatrem działającym na oblodzony maszt. Wyznaczone oddziaływania uwzględniono w modelu numerycznym masztu aluminiowego. Otrzymano maksymalne przemieszczenia wierzchołka masztu.]]>
<![CDATA[Cross-linking of polyesters based on fatty acids]]> Fri, 18 Oct 2019 12:57:35 +0200 Dworakowska, Sylwia; Le Coz, Cédric; Chollet, Guillaume; Grau, Etienne; Cramail, Henri
rodzaj: artykuł w czasopiśmie
Abstrakt: This study aims at obtaining cross‐linked polymeric materials of biomass origin. For this purpose, one‐pot polyesterification of methyl ricinoleate and methyl 12‐hydroxystearate using titanium isopropoxide as a catalyst is performed leading to polyesters known as estolides. The obtained estolides are successfully cross‐linked using dicumyl peroxide or a sulfur vulcanization system. The so‐formed bio‐based elastomers appear to exhibit promising properties. The latter are analyzed by mechanical tensile tests and thermal techniques (TGA, DSC, DMA) and show high thermal stability (T5% = 205–318 °C), tailored physico‐mechanical properties (low glass transition temperature in the range from −69 to −54 °C), and good tensile strength (0.11–0.40 MPa). Networks prepared from high molecular weight estolides appear to be promising bio‐based elastomers. Practical Applications: The vegetable oil‐based estolides described in this contribution are new fully bio‐based precursors for further elastomers synthesis. The resulting estolide networks (obtained by peroxide or sulfur cross‐linking) exhibit tailored thermo‐mechanical properties. ]]>
<![CDATA[Społeczny aspekt gradacji przestrzeni w środowisku mieszkaniowym]]> Fri, 18 Oct 2019 12:57:16 +0200 Bednarz, Martyna
rodzaj: rozdział/fragment książki
Abstrakt: „Gradacja” czy też „hierarchizacja” oznacza „podporządkowanie zasadzie hierarchii lub klasyfikowanie według hierarchii” (SJP). Z punktu widzenia niniejszego artykułu, bliższe jest drugie znaczenie, spotykane w urbanistyce, które oznacza stopień dostępności przestrzeni, dla jej użytkowników, w tym wypadku analizowanej w obszarach mieszkaniowych, dzieląc ja na publiczną, sąsiedzką/półprywatną i prywatną. Relacje między tymi strefami mogą być kształtowane na kilka różnych sposobów. W Polsce, wciąż jeszcze, najpopularniejszym z nich jest stosowanie twardych barier, takich jak mury, ogrodzenia, które w sposób definitywny rozgraniczają te strefy od siebie, jednocześnie wpływając (zazwyczaj negatywnie) na jakość, estetykę i funkcjonalność przestrzeni. Tendencja w nowopowstających obszarach mieszkaniowych w Polsce charakteryzuje się zazwyczaj wyższym standardem estetycznym samej architektury czy mieszkań, jednak nie idzie za tym wzrost jakości przestrzeni osiedlowych czy definiowanie stopni jej dostępności bez używania barier fizycznych. Wpływ na stosunki społeczne mają duże przeobrażenia jakie dokonały się zarówno lokalnie jaki i globalnie, na przestrzeni ostatniej dekady. Problemy te dotykają, przede wszystkim, mieszkańców miast, a podtrzymywanie poczucia wspólnoty okazuje się w tych warunkach bardzo trudnym zadaniem. Uwzględnienie hierarchizacji przestrzeni, w aspektach zarówno przestrzennym jak i społecznym, podczas procesu projektowego może znacznie wpłynąć na podniesienie komfortu i jakości życia mieszkańców i użytkowników tych obszarów, aktywizować je oraz inicjować nieformalne stosunki społeczne.]]>
<![CDATA[Analiza czasu przejazdu szybkiego tramwaju przed i po oddaniu do użytku estakady nad układem torowym Dworca PKP Kraków Płaszów]]> Fri, 18 Oct 2019 12:53:32 +0200 Stypułkowska, Ewelina; Twardowski, Witold
rodzaj: rozdział/fragment książki
Abstrakt: Krakowski Szybki Tramwaj to sztandarowy projekt krakowskiej komunikacji miejskiej, który jest stale rozwijany i ulepszany. Przeprowadzono analizę funkcjonowania linii nr 50 KST przed i po oddaniu do użytku estakady nad układem torowym Dworca PKP Kraków Płaszów. Podjęto próbę sprawdzenia, czy otwarcie estakady i wprowadzenie linii nr 50 KST na nową trasę spowodowało poprawę warunków ruchu, a także czy czas przejazdu całej trasy faktycznie uległ skróceniu – zgodnie z rozkładem jazdy. Ponadto, w podsumowaniu wskazano elementy systemu transportowego, które obniżają efektywność KST.]]>
<![CDATA[Dostępność transportowa Placu Józefa Piłsudskiego w Stalowej Woli w ocenie mieszkańców]]> Fri, 18 Oct 2019 12:50:00 +0200 Stypułkowska, Ewelina
rodzaj: rozdział/fragment książki
Abstrakt: W ramach referatu przeanalizowano jakość Placu Józefa Piłsudskiego w Stalowej Woli. Aby ocenić jakość przestrzeni miejskiej, dokonano analizy pod względem dostępnej infrastruktury transportowej (pieszej, rowerowej, komunikacji zbiorowej, komunikacji indywidualnej) oraz przeprowadzono wśród mieszkańców badanie ankietowe w formie elektronicznej. Wynikiem przeprowadzonych badań jest inwentaryzacja oraz ocena dostępności komunikacyjnej najważniejszej przestrzeni publicznej miasta z perspektywy mieszkańców. Dodatkowym aspektem, który został ujęty w referacie jest sposób postrzegania placów miejskich przez ich użytkowników oraz odpowiedź na pytanie, czy w mieście potrzebny jest rynek?]]>
<![CDATA[Influence of winding’s active parts on Axial flux in AC machines]]> Fri, 18 Oct 2019 10:21:43 +0200 Sobczyk, Tadeusz J.; Sułowicz, Maciej; Tulicki, Jarosław
rodzaj: materiały konferencyjne w książce
Abstrakt: This paper discusses the conditions for generating axial flux using the active parts of stator and rotor windings in AC machines even if these parts are axially located. The 1D flux density analysis of the air gap shows that the axial flux is generated due to the asymmetry of windings or asymmetry of the air gap. Respective conditions are stated and an analytical formula for the axial flux is presented in the paper. Exemplary, the axial flux due to static rotor eccentricity is analyzed in detail.]]>
<![CDATA[Characteristic features of rotor bar current frequency spectrum in cage induction machine with inner faults]]> Fri, 18 Oct 2019 10:17:29 +0200 Sobczyk, Tadeusz J.; Tulicki, Jarosław; Weinreb, Konrad; Mielnik, Ryszard; Sułowicz, Maciej
rodzaj: materiały konferencyjne w książce
Abstrakt: This paper presents an analysis of the possibilities of induction machine inner fault detection based on rotor cage bars current measurement. Electrical and magnetic asymmetry types and their impact on rotor bar current waveforms were investigated. Measurement results were compared with finite element model simulation results.]]>
<![CDATA[Influence of alternating torque component on the possibility of induction machine inner asymmetry detection]]> Fri, 18 Oct 2019 10:13:23 +0200 Sobczyk, Tadeusz J.; Tulicki, Jarosław; Gębarowski, Tomasz; Maciołek, Wacław; Sułowicz, Maciej
rodzaj: materiały konferencyjne w książce
Abstrakt: This paper presents the influence of torque alternating component of pulsation being an aliquant of rotor angular speed on diagnostic frequency components in the induction machine. Motor with electrical and magnetic asymmetry in form of rotor bar fault and dynamic eccentricity was investigated. Comparison of stator current frequency spectra obtained from simulations and measurement in steady state is presented. The analysis results described in the paper aim to show the interaction of characteristic in stator currents features that result from the simultaneous occurrence of mechanical torque disturbances and rotor faults.]]>
<![CDATA[Zintegrowane węzły przesiadkowe w procesie kształtowania zrównoważonej mobilności w miastach]]> Fri, 18 Oct 2019 10:00:39 +0200 Szarata, Andrzej
rodzaj: książka
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<![CDATA[Preface of the “Symposium on Decision Support Systems in Construction Management”]]> Fri, 18 Oct 2019 09:44:11 +0200 Plebankiewicz, Edyta; Skorupka, Dariusz
rodzaj: materiały konferencyjne w książce
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<![CDATA[Źle urodzone : reportaże o architekturze PRL-u]]> Fri, 18 Oct 2019 09:37:12 +0200 Springer, Filip
rodzaj: książka
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<![CDATA[Mathematical model of PM disc generator with iron cores of stator coils]]> Fri, 18 Oct 2019 09:34:43 +0200 Radwan-Pragłowska, Natalia
rodzaj: materiały konferencyjne w książce
Abstrakt: The paper presents a model of disc generator with permanent magnets and with iron cores inside the stator coils. The article focuses on the circuit model of the permanent magnet generator of axial magnetization with a stator which contains the nonoverlapping coils with modified magnetic circuit design. The aim of this work was to determine the flux-density distribution in three-phase generator magnetic circuit. Basing on this distribution, the circuit model parameters such as inductances, fluxes linked with the windings and qualitative characteristics of the cogging torque were determined for axial flux machine. To confirm the usefulness of the proposed models, the parameters of mathematical model obtained from analytical considerations were verified basing on 3D field analyses for the exemplary generator design.]]>
<![CDATA[Reliability assessment of serviceability limit state for diaphragm wall using hardening soil (HS) model]]> Fri, 18 Oct 2019 08:55:55 +0200 Kawa, M.; Puła, W.; Truty, A.
rodzaj: materiały konferencyjne w książce
Abstrakt: The work deals with reliability analysis of cantilever diaphragm pile wall located in spatially variable sands. The problem of serviceability limit state of the construction is considered. To precisely calculate the value of maximum wall deflection the Hardening Soil (HS) is employed as soil model. To account for soil spatial variability friction angle of the sand is modeled using anisotropic random field with specified both vertical and horizontal scale of fluctuation (SOF). The individual realizations of boundary value problem are solved using ZSoil code. The influence of horizontal SOF on the probabilistic characteristics of maximum wall deflection is tested: for assumed value of vertical SOF and few different values of horizontal SOF the probability density function of wall deflection are estimated. Based on that function the assessment of failure probability versus horizontal SOF is calculated. It is shown that in the case of diaphragm wall construction the value of horizontal SOF can significantly affect probability of serviceability failure.]]>
<![CDATA[Three-dimensional dynamics of curved pipes conveying fluid]]> Fri, 18 Oct 2019 07:32:38 +0200 Łuczko, Jan; Czerwiński, Andrzej
rodzaj: artykuł w czasopiśmie
Abstrakt: The paper presents a model describing flow-induced 3D motions of a pipe. The Timoshenko-type model is adopted, accounting for geometric nonlinearities. The state of static equilibrium is governed by twelve nonlinear ordinary differential equations and the boundary problem is solved by numerical methods. Flow-induced pipe vibrations are governed by a system of six partial differential equations with coefficient terms (coefficients) depending on static solutions. The calculation procedure relies on the Galerkin approach with a spline function as a shape function. The pipe shape is defined by parametric equations. Model and the adopted method of analysis are verified through comparing research data provided by other authors. The influence of fluid flow velocity on natural frequencies and vibration modes is analysed for pipes with varied curvature, taking into account extension of the pipe centreline.]]>
<![CDATA[Influence of mining shocks on residential buildings in Poland]]> Thu, 17 Oct 2019 17:44:41 +0200 Pachla, Filip
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The article presents the methodology for determining the dynamic resistance of residential, prefabricated buildings subjected to mining shocks. The calculations were performed using simplified 2D models and response spectrum methods. The results of calculations may in the future be used in the assessment of the impact of the predicted accelerations of ground vibrations on building structures.]]>
<![CDATA[Redistribution of internal forces in RC beams due to fire action]]> Thu, 17 Oct 2019 17:41:15 +0200 Chudyba, Krzysztof
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Due to the fire temperature action material properties (for RC structures - for concrete and reinforcing steel) are subjected to degradation. This results in the reduction of stiffness of cross-section of the elements and finally in redistribution of internal forces for statically indeterminate structural systems (for continuous beams and slabs, for frames). Thus it is important to take into account these effects while carrying out the fire design of such structures, because as a result of internal forces redistribution the ultimate limit state in fire situation may be achieved earlier than for analysis neglecting these effects. In the paper there is analyzed the question of stress redistribution for cross-sections of RC beam fixed at both ends subjected to the action of dead and live loads on its upper surface as well as the fire temperature acting from the other three sides of the beam. The temperature change with the time was assumed in accordance with standard fire curve (ISO 834). Analysis was carried out with the finite element method (FEM) with the application of Abaqus program. Results of analysis indicate the importance of redistribution effects for longer fire duration time (more than 90 min) and the redistribution includes the reduction in values obtained for span crosssection and increase in support one.]]>
<![CDATA[Fluidisation of iron-based oxygen carrier for chemical looping combustion]]> Thu, 17 Oct 2019 17:38:47 +0200 Berkowicz, Gabriela; Miłkoś, Magdalena
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The study focuses on the fluidisation of an iron-based material for chemical looping combustion. The Fe/FexOy system can act as an oxygen carrier. This material can be used to transfer the oxygen in the chemical looping combustion ensuring easy CO2 sequestration during the process of burning the fuels. This kind of process would be possible only by introducing the oxygen carrier into a fluidised state. The purpose of the presented work is to determine the size of grains of an iron-based material and the minimum fluidisation velocity of the gas which can ensure a proper fluidisation of the material.]]>
<![CDATA[Catalytic oxidation of methanol in the cenospheric fluidized bed]]> Thu, 17 Oct 2019 17:22:32 +0200 Berkowicz, Gabriela; Wrona, Jan; Baron, Jerzy; Bradlo, Dariusz; Zukowski, Witold
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The process of oxidation of gaseous CH3OH by N2O was carried out over an Ag-Fe2O3-cenosphere catalyst whose structure can be defined as double shell-core catalyst. Preparation of the catalyst was carried out in two stages: thermal decomposition of Fe(CO)5 at above 160°C and then electroless Ag plating. The process of methanol degradation by N2O was carried out in a fluidized bed reactor. The study confirms that it is possible to achieve complete degradation of N2O and CH3OH for the obtained catalyst at above 450°C when the contact time of the reactants with the catalyst is approximately 6 second and when the substrates are used in stoichiometric ratios. More than 60% of the hydrogen contained in CH3OH can be converted to molecular hydrogen at 500°C with a ratio of N2O/CH3OH not greater than 0.6 and with a contact time of reactants with the catalyst of approx. 6 seconds.]]>
<![CDATA[Application of neural networks to lighting systems]]> Thu, 17 Oct 2019 17:20:53 +0200 Dudzik, Marek; Dechnik, Mirosław; Furtak, Marcin
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: This paper will continue application of neural networks to the concept of environmental quality management technology described elsewhere. Human preferences are different and may vary depending on type of the work or psycho-physical conditions of workers. This paper deals with application of artificial neural networks (ANNs) to control of general lighting systems to provide personal (individual) illuminance on worktables. Two-layer feedforward ANN is used to identify and model the system. Introduction of ANN to model illumination systems opens a new possibility of individual control systems in which specific areas have different set of requirements than remaining areas of a lighting system.]]>
<![CDATA[Power quality in energy efficient buildings – a case study]]> Thu, 17 Oct 2019 17:19:19 +0200 Romanska-Zapala, Anna; Dechnik, Miroslaw; Grzywocz, Karina
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Energy-efficient buildings are increasingly equipped with modern automation and control systems that enable significant energy savings by providing energy in the exact place and time of the demand. Moreover, high-performance LED light sources are used as interior lighting. Since the computers, automation system controllers and LED light sources require a lower voltage than the mains voltage, the buildings use a large number of power electronic converters adjusting the power supply conditions for the devices being serviced. Operation of this type of strongly non-linear receivers leads to an increase in transmission losses of electrical energy related to reactive power flow and generation of higher harmonics. Striving to reduce energy consumption in buildings leads to increasing use of these devices, which in consequence will aggravate the problem of insufficient quality of electricity. The paper discusses the provisions of standards for the quality of electricity. The paper presents the results of research on the quality of electricity in the Malopolska Laboratory of Energy Efficient Building – an experimental building equipped with a building automation and control system.]]>
<![CDATA[Possibilities of energy efficiency experimental research using MLBE building's automation and control system]]> Thu, 17 Oct 2019 17:16:25 +0200 Romanska-Zapala, Anna; Furtak, Marcin; Fedorczak-Cisak, Malgorzata; Dechnik, Miroslaw; Grzywocz, Karina
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Due to the increasing requirements in the field of buildings' energy saving, impossible to meet only due to the thermal insulation of the building envelope, it is necessary to pay attention to the energy efficiency of technical installations and application of automatic control systems. Computer simulations on the building structure or functioning of its individual installations in the context of limiting its energy consumption, performed by Design Builder – type computer programs, are a very useful tool. However, in the case of simulation studies on the impact of automatic control systems on energy efficiency, the results are often overly optimistic – they are overestimated in comparison to results achieved in actual environments. Therefore, the results obtained should be validated in an actual environment. This paper presents the Małopolska Laboratory of Energy Efficient Building (MLBE) of Cracow University of Technology, which provides an opportunity to perform experimental actual scale research of building automation systems to improve buildings energy efficiency and occupants' comfort. This paper includes a detailed description of MLBE's building automation and control system. Furthermore, this paper presents possibilities and an example methodology of energy efficiency's experimental study using BACS system.]]>
<![CDATA[Multi-source cooling system control in the MLBE building – a pilot experimental study]]> Thu, 17 Oct 2019 17:13:47 +0200 Romanska-Zapala, Anna; Furtak, Marcin; Dechnik, Miroslaw; Grzywocz, Karina
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Computer simulations of buildings in the context of improving their energy efficiency, performed by the Design Builder – type computer programs, are a very useful tool. However, in the case of simulation studies on the impact of automatic control systems on the energy efficiency of buildings, the results are often overly optimistic. Energy savings are overestimated in comparison to the results achieved in the real environments. Therefore the results obtained by the simulations should be validated in a real environment. The Małopolska Laboratory of Energy Efficient Building (MLBE) of Cracow University of Technology provides an opportunity to perform an experimental real scale research of the building automation systems to improve the buildings energy efficiency and occupants' comfort. This paper presents a part of the multi-source cooling system with selected cooling sources and room's cooling methods, implemented in the MLBE building. The purpose of the summer study was to verify the work of selected technical equipment and installations that realize the cooling process in actual conditions. A gas heat pump and a passive cooling system using the cooling capacity of the soil were used. Furthermore, the fan coil units and the plane systems were used at the room level. Together with the possibilities of the building automation and control system implemented in MLBE, the results shown in this paper will become – in the future planned research – a base for creating optimized algorithms for controlling the studied system in the context of the search for energy-efficient installation and programming solutions. The obtained results will form the basis to develop more effective control strategies for the tested cooling system, both in the economic context as well as in the context of the required users´ comfort.]]>
<![CDATA[The influence of air heating and lighting on the comfort conditions in NZEB buildings' rooms]]> Thu, 17 Oct 2019 17:11:13 +0200 Fedorczak-Cisak, Małgorzata; Furtak, Marcin; Szmelter, Aleksandra; Dechnik, Mirosław
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Near zero energy buildings (NZEB) and passive buildings are designed to minimize the energy consumption. The building's "almost zero energy demand" standard, which will be in force in Europe from 2021, additionally imposes an obligation on buildings to use the energy from renewable sources. It should be remembered that in addition to the applicable criteria for NZEB buildings, the comfort of use of the rooms is equally important. The development of low-energy buildings resulted in new products and technologies on the construction and installation materials market. Radiator heating is increasingly being abandoned for surface or air heating. In the lighting industry, which also generates the energy consumption, products based on LED technology are developing. Both new heating and lighting systems have a very large impact on the comfort of using NZEB buildings. In this article, the Authors will present the results of "in situ" research regarding the feeling of comfort in an office space heated using fan coil units. The ventilation system also influences the feeling of comfort. The location of the ventilators in the room and the stream of supply air may cause discomfort. The authors will check the comfort conditions in different places of the room, including the propagation of the air stream. Additionally, the Authors will determine the minimum operating temperature of work comfort in the tested room, with the air heating. The second research task of this article will be to determine the visual comfort of people, when using recommended illuminance. The aim of the article is to answer the question of how to design workplaces in an air-heated room and how to design lighting to optimize the work comfort and energy consumption. The conclusions from the article will allow formulating the principles for the design of NZEB buildings.]]>
<![CDATA[Współczesne problemy transportu : opracowanie monograficzne. T. 6, Infrastruktura transportu]]> Thu, 17 Oct 2019 17:07:55 +0200 rodzaj: materiały konferencyjne - redakcja książki
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<![CDATA[Współczesne problemy transportu : opracowanie monograficzne. T. 5, Sterowanie ruchem]]> Thu, 17 Oct 2019 16:54:13 +0200 rodzaj: materiały konferencyjne - redakcja książki
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<![CDATA[Współczesne problemy transportu : opracowanie monograficzne. T. 4, Bezpieczeństwo ruchu drogowego]]> Thu, 17 Oct 2019 16:52:43 +0200 rodzaj: materiały konferencyjne - redakcja książki
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<![CDATA[Współczesne problemy transportu : opracowanie monograficzne. T. 3, Ruch pieszy i rowerowy. Przestrzeń publiczna]]> Thu, 17 Oct 2019 16:51:11 +0200 rodzaj: materiały konferencyjne - redakcja książki
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<![CDATA[Współczesne problemy transportu : opracowanie monograficzne. T. 2, Transport kolejowy]]> Thu, 17 Oct 2019 16:46:27 +0200 rodzaj: materiały konferencyjne - redakcja książki
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<![CDATA[Współczesne problemy transportu : opracowanie monograficzne. T. 1, Transport publiczny]]> Thu, 17 Oct 2019 16:41:35 +0200 rodzaj: materiały konferencyjne - redakcja książki
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<![CDATA[[Józef Wąsacz "W rytmie serca"]]]> Thu, 17 Oct 2019 16:12:04 +0200 rodzaj: opis bibliograficzny rozdziału w książce
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<![CDATA[Jubileusz 70-cio lecia profesora Wacława Serugi]]> Thu, 17 Oct 2019 16:09:22 +0200 Jagiełło-Kowalczyk, Magdalena
rodzaj: opis bibliograficzny artykułu
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<![CDATA[Jubileusze, jubileusze]]> Thu, 17 Oct 2019 16:08:34 +0200 Jagiełło-Kowalczyk, Magdalena
rodzaj: opis bibliograficzny artykułu
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<![CDATA[Juliusz Żórawski]]> Thu, 17 Oct 2019 15:50:50 +0200 Lenartowicz, J. Krzysztof
rodzaj: opis bibliograficzny rozdziału w książce
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<![CDATA[Bohdan Stanisław Lisowski]]> Thu, 17 Oct 2019 15:50:06 +0200 Złowodzki, Maciej
rodzaj: opis bibliograficzny rozdziału w książce
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<![CDATA[Poczta Wolnego Miasta Krakowa]]> Thu, 17 Oct 2019 15:46:22 +0200 Namysłowski, Władysław
rodzaj: opis bibliograficzny książki
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<![CDATA[Analysis of lean angle influence on three wheeled vehicle steerability characteristics]]> Thu, 17 Oct 2019 14:20:45 +0200 Grzegożek, Witold; Zagól, Bartosz; Kot, Adam
rodzaj: materiały konferencyjne w książce
Abstrakt: Despite the many opportunities offered by large cities, they have also some disadvantages. One of the main problems is the enormous pollution of the environment which is caused, in large extent by the number of vehicles. From this point of view the vehicles should be very economical: using three wheels instead of four can significantly reduce the weight of the vehicle, im-proving its energy consumption. Moreover, a tricycle vehicle is a viable alternative to four-wheeled and two-wheeled vehicles, combining positive aspects of the car, such as comfort and safety, as well as the dynamics and dimensions of the motorcycle. To prevent the vehicle from rollover, it should lean like a motorcycle. Motorized tilting vehicles have been studied and developed since the beginning of 1950s. This article presents the possibilities offered by the angle of lean during cornering. The example results of the initial tests of the own prototype tilt vehicle are presented. The conducted tests show clearly that a vehicle body lean angle influences significantly on the steering characteristics.]]>
<![CDATA[Rolling stability control based on torque vectoring for narrow vehicles]]> Thu, 17 Oct 2019 14:16:07 +0200 Grzegożek, Witold; Weigel-Milleret, Krzysztof
rodzaj: materiały konferencyjne w książce
Abstrakt: Narrow vehicles have many possible qualities then the normal track width cars. However, the main disadvantage of the narrow vehicles is their tendency to roll over. That is why the active roll mitigation system seems to be necessary. Torque vectoring has huge impact on vehicles steering characteristics. The paper contains a description of simulation models. The three degree of freedom model (3DOF) of a vehicle as a development of former bicycle model is presented as an appropriate model for the test subject. The rolling stability is described. The basic roll detection system is presented and its usefulness is discussed. Another approach based on the roll angle and roll rate is presented. The paper contains the description of a tested narrow car, results of preliminary tests and simulations results compared with road tests results of narrow vehicle. The usefulness of a 3DOF vehicle model to describe the movement of the vehicle was tested. The usefulness of roll angle calculation using 3DOF model in roll mitigation system at narrow car is discussed.]]>
<![CDATA[Generalized model of hybrid three-module launcher allowing for different configurations – general simulation studies]]> Thu, 17 Oct 2019 13:49:43 +0200 Kluszczyński, Krzysztof; Makowski, Tomasz
rodzaj: materiały konferencyjne w książce
Abstrakt: The paper presents the generalized model and simulation program for a hybrid three-module launcher including a pneumatic module, a coilgun module and a railgun module. The analyzed modules constituting the hybrid launcher can be arranged in different order. The elaborated program enables us to analyze and to compare the different chosen configurations of the launcher. Results of simulations show that the final (output) missile velocity depends on sequence of modules.]]>
<![CDATA[Modelowanie grubych konstrukcji typu FGM poddanych obciążeniom termomechanicznym : praca doktorska]]> Thu, 17 Oct 2019 13:00:18 +0200 Szubartowski, Damian
rodzaj: rozprawa doktorska
Abstrakt: Rozprawa dotyczy problematyki modelowania grubych konstrukcji typu FGM poddanych obciążeniom termomechanicznym. Głównym rdzeniem rozprawy jest sześć rozdziałów, na które składają się kolejno: wstęp - obejmujący między innymi omówienie aktualnego stanu wiedzy i krytyczny przegląd literatury z zakresu materiałów FGM; omówienie koncepcji, metod wytwarzania oraz numerycznego modelowania materiałów FGM; ogólne sformułowanie termo-sprężystego problemu FGM; twierdzenia pozwalające na redukcję problemu; przykłady modelowania grubościennych elementów konstrukcyjnych; posumowanie uzyskanych wyników oraz wskazanie kierunków dalszych prac. Cała rozprawy została zamknięta bibliografią oraz pięcioma dodatkami, w których zamieszczone zostały szczegóły wyprowadzeń, dowodów matematycznych oraz wybrane kody numeryczne.]]>
<![CDATA[The estimation of the pressure pulsation damping coefficient of a nozzle]]> Thu, 17 Oct 2019 12:55:52 +0200 Młynarczyk, Przemysław; Cyklis, Piotr
rodzaj: artykuł w czasopiśmie
Abstrakt: The attenuation of pressure pulsation in volumetric compressor manifolds is a result of three factors: anti-resonance, viscosity and vorticity. Two main methods are considered as the standard approach for the estimation of the element influence on pressure pulsations: a one-dimensional real time-space domain solution and a distributed acoustic impedance model (Helmholtz) approach solved in a complex domain. In both cases, only two types of pressure attenuation may be estimated: resonance characteristics and linear viscosity damping. In this paper, the assessment of pulsation damping caused by 3D vorticity effects is analysed. This effect is especially important while analysing the attenuation of the pressure pulsations of different nozzle shapes. A theoretical analysis based on the impulse flow 3D simulation is shown and compared to the classical solutions where 3D effects are neglected. The comparison shows that one-dimensional viscous damping estimation methods are insufficient. Using an impulse induced flow 3D simulation, the estimation of a given nozzle's damping characteristics may be obtained more accurately. Experimental evaluation of the proposed method is also presented. This method may also be applied for other manifold elements.]]>
<![CDATA[VEEP—the system for motion tracking in virtual reality]]> Thu, 17 Oct 2019 12:33:00 +0200 Kowalski, Przemysław; Skabek, Krzysztof; Mrzygłód, Jan
rodzaj: materiały konferencyjne w książce
Abstrakt: The article presents basic assumptions of the VEEP (Virtual Entertainment Enhanced Platform) system which combines virtual reality goggles with motion tracking system based on several of RGB cameras. We present basic algorithms for the system calibration and maintenance. The initial performance results were also given.]]>
<![CDATA[Comparison of exact and metaheuristic approaches in polynomial algorithms for scheduling of processes]]> Thu, 17 Oct 2019 11:23:05 +0200 Drabowski, Mieczysław
rodzaj: materiały konferencyjne w książce
Abstrakt: The paper presents analysis of results obtained by implemented meta-heuristic algorithms for processes scheduling, which were discussed and detailed presented within series proceedings on 37th, 38th and 39th International Conferences on Information Systems Architecture and Technology ISAT, respectively. This analysis is based primarily of comparisons of the results obtained by these algorithms with the results obtained by with polynomial algorithms, known with subject literature.]]>
<![CDATA[Application of image analysis to the identification of mass inertia momentum in electromechanical system with changeable backlash zone]]> Thu, 17 Oct 2019 08:03:26 +0200 Tomczyk, Marcin; Plichta, Anna; Mikulski, Mariusz
rodzaj: artykuł w czasopiśmie
Abstrakt: This paper presents a new method of identification of inertia moment of reduced masses on a shaft of an induction motor drivebeing a part of an electromechanical system. The study shows the results of simulations performed on the tested model of a complex electromechanical system during some changes of a backlash zone width. An analysis of wavelet scalograms of the examined signals carried out using a clustering tech-nique was applied in the diagnostic algorithm. The correctness of the earliest fault detection has been verified during monitoring andidentification of mass inertia moment for state variables describing physical quantities of a tested complex of the electromechanical system.]]>
<![CDATA[Numerically simulated structural response of a bearing steel frame with joints of varying stiffness to fully developed fire conditions]]> Thu, 17 Oct 2019 07:59:10 +0200 Maślak, Mariusz; Woźniczka, Piotr
rodzaj: artykuł w czasopiśmie
Abstrakt: Aim: This paper examines the responses of load-bearing steel frames to direct fire exposure and the associated impact of the monotonically increasing temperature of its components. For comparative purposes, the authors analysed in detail specific frames with beam-to-column joints differing in rigidity. Depending on whether there are stiffening ribs present and, if so, on where they are located, the fire resistance of the considered structural component is determined by the actual damage patterns. These can be manifested as local instability in the column web or as damage to the column flange or beam flange. The design of the joint is also one of the factors determining the redistribution of internal forces generated in the frame components when subjected to fire conditions. Methods: The authors identified, discussed and compared the dependencies determining the relationships between the temperature of the frame com-ponents, and the bending moments and axial forces induced in these components during a fire. These relationships were identified through a detailed analysis of a numerical example, in which the fire behaviour of three similar steel frames, differing in terms of their beam-to-column joint rigidity, was examined. In the first analysed case, a joint without any ribbing was examined, in the second case, a joint with horizontal ribs, and in the third case, a joint with horizontal and diagonal ribs. The relationships listed above are accompanied by corresponding the relationships specifying the dependencies between steel temperature and frame beam deflection. In addition, the analysis considers flexible supports with different rigidity to model the resistance of the columns to horizontal joint displacement.Results: It has been shown that the analysed types of the examined frame exhibit substantial differences in their predicted structural responses if the joints used in them and exposed to fire differ in rigidity. The identification of these differences and their qualitative and quantitative description constitute the main objective of this work. Conclusions: Frame behaviour under fire conditions is determined not only by frame geometry and the size of its structural members, designed to be able to fully bear their respective loads, but also, to the same extent, by the susceptibility to deformation of the bearing structure itself and the joints connecting the component structural members.]]>
<![CDATA[What matters in housing architecture – a survey of dwellers’ opinions]]> Wed, 16 Oct 2019 18:36:32 +0200 Lasiewicz-Sych, Angelika
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: This paper presents results of a questionnaire survey designed to study the most valued features of the housing environment in dwellers' opinion. The subjects were inhabitants (aged 13 to 81, N = 470) of various housing environments in Poland (including blockhouses in the largest cities of the country, comfortable suburban villas, as well as small rural houses). Concluding the results, the most important physical elements of housing environment seem to be: location, plan and area of the flat, specific features of home spaces such as natural light, stylish arrangement and technical quality. Most valued elements of immediate surroundings depend primarily on type of the building; one-family house inhabitants value the most private area elements – such as garden, while city tenement house and multi-family block inhabitants value rather functional elements in public zone – such as shops and basic services. Location (understood primarily in relation to the city centre) is very important for residents of big cities and students. The apartment plan and its correspondence with functionality is especially valued by more educated people (specifically those professionally dealing with architecture); the size of the flat and the immediate surroundings are in turn more valued by less educated people employed in basic services. Impact of architectural features that are important in appraisal of the housing environment (also attractive views and appearance of the building) are balanced by social and psychological aspects of home space, such as home atmosphere, privacy and social relations inside the home (relations with other residents within the perceived home space) and in the immediate neighbourhood (good neighbours). Together with architectural and technical quality of the house, they constitute the home environment that may be source of satisfaction to their inhabitants.]]>
<![CDATA[Student design workshop with specialist communities proves inspirational]]> Wed, 16 Oct 2019 18:33:49 +0200 Kulig, Anna; Romaniak, Krystyna; Sikorski, Paweł
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Student workshops not only provide a meeting place for varied specialist communities, they also are a form of training. In this article, the benefits are outlined and discussed of holding workshop classes in an historical townhouse in the Main Market Square in Kraków, Poland. These classes were held in December 2018 at the Spiski Palace. The subject of these innovative classes was design of the arrangement of a number of the historic Spiski Palace interiors, intended for a printing and historical books micromuseum. Included with the workshop were numerous lectures, meetings and discussions, as well as sessions spent visiting other museum sections. This activity and form of contact with specialists from various disciplines enriched the knowledge of students and inspired interest in the heritage of Kraków city culture.]]>
<![CDATA[An integrated multi-layer decision-making framework in the Physical Internet concept for the City Logistics]]> Wed, 16 Oct 2019 18:31:11 +0200 Kubek, Daniel; Więcek, Paweł
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The goal of the paper is to contribute toward bridging this gap by developing the new idea of a framework for an integrated multi-layer decision-making and the Physical Internet methodology. Proposed framework explores the functional aspects of the operational problems of City Logistics system and relates to optimisation problems. These functionalities are realised by the hierarchical functional structure and are characterised by different tasks specifications. The proposed framework will be the basis for providing better integration and cooperation between city logistics entities and higher utilisation level of logistic infrastructure. A proposed approach based on four major premises: integration, intelligence environmental and economic, which is the combination of modern ideas for freight transportation in cities. Considerations are summarised by practical example which presents information and decisions flows within proposed framework.]]>
<![CDATA[Analysis of the spatial structure of green building in the aspect of selected environmental issues on the example of the city of Cracow (Poland)]]> Wed, 16 Oct 2019 18:28:24 +0200 Bak, Joanna; Radziszewska-Zielina, Elzbieta; Zielina, Michal
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: In the era of developing cities, it is extremely important to maintain an appropriate level of quality of the surrounding environment or to improve this level. Newly built buildings are not without impact on the city's environment. It is important to control and limit their negative impact. Multi-criteria investment assessment systems help with many problems related to urban development. They allow analysis and evaluation of various issues, including those related to the environment. The purpose of this study was to determine the spatial structure of buildings certified in the BREEAM system (Building Research Establishment Environmental Assessment Method) in Kraków by developing a map of their deployment, and then analysing the location of green buildings in terms of selected environmental issues. The selected certification system is one of the most commonly used multi-criteria assessment systems in Poland. The map was developed to assess the current spatial structure of green buildings. On the basis of the map, it is possible to indicate potential areas of the city where it would be advisable to locate a green building that meets specific environmental requirements. In Kraków, it can be noticed that objects with the In-Use certificate are mostly available individually. There are only two small clusters of such buildings. Upon analysing buildings with a final certificate, it can be observed that there are both single buildings as well as small and larger clusters (office parks). These facilities are located near or between the beltways. When analysing the distribution of buildings with the certificate obtained at the design stage, it can be observed that most of them are located near bypasses. Two clusters are located in the southern part of the city, but this is due to the expansion of existing office parks. Comparing the developed map with the location of the combined sewerage system in Kraków, it can be seen that the vast majority of certified facilities are within or in close proximity to the combined network. If in these facilities solutions related to the management of rainwater at the place of precipitation were used, each of them represents a significant relief for the sewage system in Kraków. Due to the fact that some of the green buildings in Kraków are present in clusters, their fulfilment of requirements related to the introduction of greenery to the plot (Land Use and Ecology, Surface water run - off and Flood risk categories) may affect the levelling of the urban island heat in the areas where they occur. Most green buildings in Kraków are located along the city's three bypasses. If these buildings have scored points in the category of Transport for specific activities, then in combination with their location this represents a positive value for the city's air quality. Among the requirements for green buildings in multi-criteria assessment systems are those whose fulfilment is a particular value for the city's environment only with a specific location of the building. For this reason, it matters to the city whether the newly constructed buildings are green. The most common positive effects can be expected in the central parts of cities, because that is where the combined sewerage system dominates, where there are problems associated with UHI (Urban Heat Island) or urban floods. The presence of several buildings near each other also generates a pro-ecological effect.]]>
<![CDATA[Dynamic influence of a swinging bell on a traditional wooden structure of the Lemko orthodox church belfry]]> Wed, 16 Oct 2019 18:25:22 +0200 Kochański, T.
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Paper treats about dynamic influence of a swinging bell on a traditional wooden structure of the orthodox church belfry (example calculations made for a bell and belfry of the Lemko's orthodox church). On the basis of the conclusions of the analysed belfry, there were made modifications aimed to improve its dynamic parameters. The brief summary provides comparison between the effects of such modifications and existing wooden structure.]]>
<![CDATA[Freehand drawings and hybrid drawing techniques: skills for the 21st century architect]]> Wed, 16 Oct 2019 18:21:37 +0200 Makowska, Beata
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: This article is an attempt to respond to the issue of technological disruption in the traditional process of design and its impact on the architect’s way of thinking. The author elaborates on the potential that stems from the combination of freehand drawing, software and other tools offered by modern technology. The aim of this article is to present modifications to architectural education based on drawings by landscape architecture students in the Faculty of Architecture at Cracow University of Technology, Kraków, Poland. The author emphasises that both traditional and innovative digital tools have important roles in the education of future architects. The integration of traditional freehand drawing with hybrid drawing techniques expands the architect`s creativity and the design process, because they both play an important role in the development of skills for the 21st Century architect.]]>
<![CDATA[Innovative methods in teaching improve the creativity of landscape architecture students]]> Wed, 16 Oct 2019 18:18:41 +0200 Makowska, Beata
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Faculties of architecture nowadays are in the process of introducing innovative teaching methods, hoping to improve the quality of education. The aim of this article is to present modifications to teaching methodology in freehand drawing lessons, based on a case study, of landscape architecture students in the Faculty of Architecture at Cracow University of Technology (FA-CUT), Kraków, Poland. The selection of innovative topics at the FA-CUT has a significant impact on the development of students’ creativity. Independent formulation of original opinions teaches the students how to be constructively critical, fuelling the search for new, original solutions. The research results justify the conclusion that an experimental empirical study verified the hypothesis concerning the importance of methodology and topics for the development of students’ imagination. They are based on the latest research in education and psychology, encouraging a creative approach to issues and stimulating students’ cognitive motivation.]]>
<![CDATA[Energy efficiency in the residential market and implications for architecture education in Spain]]> Wed, 16 Oct 2019 18:15:56 +0200 Marmolejo-Duarte, Carlos; Moral, Consuelo del; Delgado, Luis; Spairani, Silvia; Botton, Joyce de; Pérez, Carlos; Chen, Ai; Gyurkovich, Mateusz
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: In this article, the authors have summarised the main findings of an empirical programme aimed at exploring the relevance of energy efficiency, as measured by the energy performance certificates (EPCs), in the Spanish housing market. The conclusions drawn from hedonic models, choice experiments, in depth interviews with housing experts and surveys of real estate agents were to provide the main implications for architecture education. The results suggest that despite directives to promote energy-efficient buildings, the impact on housing is far from effective. Furthermore, the way such directives have been implemented in Spain has led to the banalisation of the policy and even its incorrect comprehension. Architects can play a paramount role in the promotion of efficient homes, not only from the technical and design perspective, but also in acting as energy experts assessing both developers and final users on the benefits of energy efficiency on health, economy and comfort. This challenge requires a reconsideration of how architects are trained, both at undergraduate and postgraduate levels.]]>
<![CDATA[Teaching architectural design through competition, motivation and challenge]]> Wed, 16 Oct 2019 18:11:46 +0200 Haupt, Patrycja; Wijas, Małgorzata; Mochocka, Sylwia; Chyb, Angelika
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: In this article, the authors describe an experimental Interior Architecture Design course offered at Kielce University of Technology (KUT). The subject of the design was a mobile school project, according to requirements of the International FINSA Award (IFA) student competition, which addressed rapid climate change and the effects of atmospheric phenomena, such as droughts, floods and hurricanes. The Master’s degree in architecture students were motivated to design a temporary school pavilion that satisfied the needs of a small social group. The projects had to be adaptable to different climate conditions, environmentally friendly, and easy to assemble and disassemble. The research question was this: how introducing a design challenge, such as creating a temporary structure competition project along with the interior design, while working in groups, will affect the final course results? The result was extraordinary designs for the competition and the developing of an experimental didactic method on the basis of the authors’ concept.]]>
<![CDATA[Measurement and interpretation methodology for determining comfort in passive buildings and NZEB buildings]]> Wed, 16 Oct 2019 17:36:54 +0200 Kowalska-Koczwara, Alicja; Pachla, Filip; Tatara, Tadeusz; Fedorczak-Cisak, Malgorzata
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The article contains good practise recommendations related to the proper performance of measurements of comfort in passive buildings. Passive building is a high-quality building due to impeccable construction in terms of building physics. The passive building is so well insulated that it can only be heated by supplying fresh ventilation air. Such buildings have certain features such as: balanced temperatures, there is no overheating of the rooms in summer due to the high insulation of the partitions, high insolation due to the optimal positioning of the windows, acoustic comfort, reducing pollution in the interior, high quality of thermal comfort, no aeration, high indoor air quality, permanent protection against moisture and fungiculation of partitions, etc. In all the features listed above, there was no vibration comfort, which could be a problem especially in the city centers with extensive transport infrastructure. This kind of comfort is mostly neglected during the design process, not only in the passive buildings. In this article comfort in passive buildings for all its aspects is described. The main emphasis in the article was put on the guidelines relating to the measurement of thermal comfort and measurements of vibration comfort. The recommendations contain all stages of the measurement process from the preparation of measurements with the local vision and the measurement plan, through the in-situ measurement to pre-processing and analysis of measurement data. All measurement stages are shown on the real example of passive building located in Poland. The good practise guidelines for comfort measurements could be very useful in the diagnosis of passive buildings and NZEB buildings.]]>
<![CDATA[Building geometry and development form optimisation in terms of the energy efficiency]]> Wed, 16 Oct 2019 17:27:02 +0200 Fedorczak-Cisak, Małgorzata; Furtak, Marcin; Ciuła, Michał; Krupa, Michał
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The construction sector consumes around 40% energy for the purposes of heating. The policy of sustainable development that has been implemented for many years also transfers to actions in the construction sector. The European Union is introducing a standard of buildings with a near-zero energy demand. This standard can be achieved only by altering the manner of the design, construction and use of buildings. Such parameters like geometry or the placement of buildings relative to each other and the structure of their layout on the site, on the scale of groups of buildings, also have an impact on the energy consumption. The goal of this article is to assess the improvement of the effectiveness of actions taken in order to lower the energy demand for heating of designed buildings meant for permanent occupancy. The assessment takes into consideration the conditions of sustainable development. The analysis covers the impact of the geometry of a building and development structure on the energy balance.]]>
<![CDATA[Laboratory tests of external partition thermal insulation dedicated to buildings with a "nearly zero energy consumption"]]> Wed, 16 Oct 2019 17:20:29 +0200 Fedorczak-Cisak, Malgorzata; Furtak, Marcin; Krupa, Michal; Loziczonek, Henryk
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Thermal protection regulations for the buildings change. Currently, the construction sector aims to minimize the energy consumption. Energy Performance Directives have introduced the standard of "Nearly Zero Energy Building" (NZEB). After 2021, the design of NZEB buildings will be mandatory. The parameters of NZEB buildings in Poland are very difficult to meet and concern the thermal insulation of housing structures and the non-renewable ratio of the original PE. In the article, the Authors reviewed traditional and modern thermal insulation materials that will allow meeting the thermal insulation requirements for the external walls of NZEB buildings. Another problem raised by the authors is the insulation of historical buildings. The aim of the article is to compare the parameters and prices of the thermal insulation materials such as foamed polystyrene with innovative materials such as aerogels.]]>
<![CDATA[Aspects of teaching architecture in the context of educators’ professional experience]]> Wed, 16 Oct 2019 17:16:06 +0200 Białkiewicz, Andrzej
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The professional experience of educators has determined the teaching of architecture for centuries. Professional skills usually influence the way of teaching and approach to the subject. Over time, education has been undergoing changes resulting from the need to adapt teaching to evolving needs and possibilities, but this is also due to the development of architecture in the availability of new materials and changing fashion. In all forms of education of architects, including academic education, the teachers have been practising professionals. This is true nowadays for most of the architectural schools. Given the competencies expected of architectural graduates, it is the right principle. Therefore, all teachers of architecture should have professional experience: architects should have practice in design and implementation, while artists should have significant achievements in the field of art. In the process of educating architects, it is advisable not to employ teachers who are only theoreticians and do not practise their professions.]]>
<![CDATA[Humanisation of engineering studies]]> Wed, 16 Oct 2019 17:10:03 +0200 Żychowska, Maria J.
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Recent decades have brought about an increased specialisation of students’ professional skills. Progressively, narrower competencies are also conducive to deepening acquired knowledge and extending the scope of skills. On the one hand, this is a beneficial phenomenon, but on the other, it limits students’ knowledge and awareness of current developments in other areas, including art, such as painting, literature and music. At Cracow University of Technology, the first attempts to introduce into the engineering curriculum art classes presenting the achievements of contemporary artists were made in the 1970s. In general, their subject concerned trends in Kraków’s artistic circles, which reflected global artistic and cultural developments. Such efforts have continued and new ones introduced to supplement engineering education with humanities.]]>
<![CDATA[Costs analysis of the floors that can ensure the comfort in the buildings]]> Wed, 16 Oct 2019 17:03:57 +0200 Kowalska-Koczwara, Alicja; Pachla, Filip; Tatara, Tadeusz; Fedorczak-Cisak, Malgorzata; Stypula, Krzysztof; Bywalec, Andrzej; Karczmarska, Boguslawa
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The aim of this article is to check comfort in the passive buildings located in Libertow (close to Cracow). The two aspects of comfort are described: a thermal comfort with tightness and humidity and a vibrational comfort. The main results of measurements of the comfort aspects are described and shown. Passive buildings which were investigated are very tight and well insulated. It is good for the energy saving and for the budget of the owners but it could be a problem for the humidity requirements. In such buildings, there also could be a problem with solar energy excess which could provide that the rooms are overheated. The vibrational aspect is also often neglected on the design stage, but it also could be a problem when the residents live in their homes. The problem is that when a house is built, the costs of changes to adapt the rooms to the appropriate comfort level are much higher than in the design stage. The alternative may be a properly designed floor which shall meet all thermal and vibrational aspects of comfort. In order to improve the quality of multi-faceted comfort, three types of flooring have been proposed. All three are clearly described and their advantages and disadvantages are shown. The main goal of this article is a detailed cost analysis of these three types of floor. Cost analysis was made according to the Polish requirements so-called Catalogs of Material Inputs in the NormaPRO. Costs were estimated using detailed, simplified and mixed methods. The most effective and economically justified type of floor was also chosen.]]>
<![CDATA[The technology of vibro-acoustic floors]]> Wed, 16 Oct 2019 16:56:09 +0200 Kowalska-Koczwara, Alicja; Pachla, Filip; Tatara, Tadeusz; Fedorczak-Cisak, Malgorzata; Stypula, Krzysztof
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Transport vibrations are the subject of many research, mostly their influence on structural elements of the building is investigated. However, nowadays, especially in the centres of large cities were apartments, residential buildings are much closer to the transport vibration sources, an increasing attention is given to providing vibrational comfort to humans in buildings. People who buy apartments in the tourist attractively cities like Cracow expect to be very close to the downtown and at the same time to have quiet place to rest without any annoyance coming from transport vibration. Unfortunately, tourist attractively cities are mostly old cities with old buildings which were not designed for dynamic influences which are now in the neighbourhood. At the same time, old buildings are under the conservator care, who limits the possibility of using some solutions. There are three types of possible protection against vibrations: vibroinsulation in the source of vibration, vibroinsulation on the way of propagation and solutions in the building. The first solution depends on goodwill of infrastructure owner, the second could be complicated in the city centres and the third is the best for apartment owners but it could be expensive. The paper presents three different types of vibro-acoustic floor with different layers' configuration. Their advantages and disadvantages are also shown. In the article the main emphasis was put on the technology of making these three types of floors in terms of the possibility of their assembly in a historic building. Detailed technological parameters have been described. The paper also proposes vibroacoustic materials that can be used as a floor layer which could isolate from transport vibrations.]]>
<![CDATA[Bauhaus - didactic experiments and their legacy]]> Wed, 16 Oct 2019 16:32:33 +0200 Żychowska, Maria J.
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The author’s objective here is to remind readers of theBauhaus,which hadahugeinfluence on modern aesthetics andarchitecturalthought.Thecentenaryoftheschool’sfoundation, whichfalls this year, is an opportunity to discuss thecurriculum that is regarded as a symbol ofmodern education in the field of art, including architecture. In this article, a synthetic description is presented of an educational experiment introduced and its practical application in teaching. Then, it is analysed in the context of contemporary teaching practice, particularly in the Faculty of Architecture atCracowUniversity of Technology (FA-CUT), Kraków, Poland, as it isworthrealisingwhichelements of thecurriculumhave been included, and how they are implemented. Reviewed in the conclusions are several educational achievements of the Bauhaus, which operated for only 14 years, butcontinuestoinspire - including architects - byits philosophy of educating students.]]>
<![CDATA[Propaedeutics of teaching drawing to architects]]> Wed, 16 Oct 2019 16:06:06 +0200 Białkiewicz, Andrzej
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Teaching freehand drawing is an important task in the education of architects. It is vital to formulate the goals and functions of freehand drawing. The main role of drawing is to develop spatial awareness based on the knowledge of the construction of forms and the ability to represent the m as a form of communication. The basic method of teaching drawing at the initial stage of architects’ education has been the nature study. It is also necessary for architects to be able to drawfrommemory, documentation and imagination. An important skill is sketching, which should be accurate and precise in exploring the elements of space that are in the sphere of interest of the person who draws. The initial period of teaching drawing is important, because it can influence future achievements of studentsof architecture. Inthis article, theauthor discusses contemporary issues related to the use offreehand drawings in the education process offuture architects, in the context of learning outcomes of the freehand drawing course given to first- year students, to instill required skills and competencies.]]>
<![CDATA[Square between two synagogues in Rzeszow (Poland) – a place with potential?]]> Wed, 16 Oct 2019 16:00:31 +0200 Zajac, Barbara
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The aim of the article is to examine selected aspects of the potential of the square between two synagogues in Rzeszów. The study covers historical, spatial, functional and location features. Rzeszów is a large city in south-eastern Poland. It is the capital of the Podkarpackie Voivodship. The city has a historic centre, that in part is refurbished and pedestrianised, and, in part, its potential still waits to be unleashed. Between the historic market squares of the Old Town and the New Town, there is a sequence of smaller squares. One of the squares in that sequence is the subject of the study, described in the following paper. Characteristic feature of that square is its location between the former synagogues. It is located within an area entered into the Polish Register of Historic Monuments. The square is well-defined, to a large extent. It is located between two synagogues, tenement development, and a park. Compared to the areas of the historic market squares of the Old Town and the New Town, that square is smaller. The study seems interesting, as Rzeszów is a developing city and a metro area under construction. Interesting and attractive city centre may contribute to further development of the city. The present paper may be helpful in assessing the potential of the square between two synagogues in Rzeszów as an attractive place in the urban network of public spaces. The square seems to be an interesting place, worth using for expanding the boundaries of the attractive city centre.]]>
<![CDATA[Multiplication analysis of the cause, form and extent of damage to buildings in areas with mining impact]]> Wed, 16 Oct 2019 15:51:44 +0200 Gwozdz-Lason, Monika
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: This publication is a summary of all tasks carried out in recent years of research, calculations, simulations and analyse related to the performed research on parameter analysis that affect the form, scope and cost of removing damage in buildings and structures in areas with mining impact. The analysed problem is interdisciplinary and contains legal, geotechnical, engineering-mining, construction, material and economic analysis. The ground reaction forces were analysed for buildings and structures in the mining area. Coordinating activities of the land model, foundations and construction of buildings and structures in the mining area were adopted and the distribution rights and changes in additional reaction forces of the structure in the mining area were analysed and various factors which affect the construction damage were indicated. Problems were also identified in the mining impact forecasts that affect the design scope of new engineering structures and the impact of existing buildings and structures. The influence of various factors was analysed and additional dependency formulas were proposed, which are needed for current calculations and analyses of the scope and costs of strengthening the structure or its modernization. Based on the output data and the analysis of the results of the empirical examination of selected buildings, the determination of all factors affecting the technical condition of the building erected in the areas with the impact of mining operations. Classification according to currently used guidelines and clarification of new attributes affecting the technical condition of buildings and structures (typical and modern geometry of the building's structure, type of foundation, type of construction protection, type and stiffness of the structure). Backward analysis of damages (their temporary changes) identified as factor affecting the current state of engineering objects.]]>
<![CDATA[A posteriori modelling of a fire spreading in selected types of industrial halls]]> Wed, 16 Oct 2019 15:46:48 +0200 Maslak, M.; Pazdanowski, M.; Suchodola, M.; Wozniczka, P.
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Two different scenarios of fire development identified for two industrial halls are considered and discussed in detail. In both cases an attempt is made, using the appropriate numerical models, to describe a posteriori the spread of a fire that has already occurred in the past. The numerical model is implemented in a Fire Dynamic Simulator (i.e. FDS) computer program and used for simulation. The first considered hall is an one-storey two-aisled steel structure with an incomplete covering of its side walls. Recyclable materials were stored inside, mainly the plastic waste. The fire observed in this hall developed slowly, being repeatedly partly suppressed and then subjected to flashover again. The other building described in this contribution is an one-bay steel hall located in a transhipment terminal, in which the crude oil was stored in railroad tank cars. In this case, a fire initiated by the ignition of oil leaking from the damaged tank car and quickly intensified by the collapse of a part of the hall roof proceeded rapidly until the fuel supply ran out. The basic parameters of both models developed by the authors were calibrated on the basis of available material data as well as of the reports received from meteorological stations located in the vicinity of the destroyed halls.]]>
<![CDATA[Simulation of fire development in a large-area shopping hall]]> Wed, 16 Oct 2019 15:41:30 +0200 Maslak, M.; Pazdanowski, M.; Wozniczka, P.
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The results obtained after numerical simulation of fire development in a large area shopping hall are presented and widely discussed. The analysis has been conducted for two types of halls differing in size and efficient ventilation capabilities. A fire development scenario has been forecast under the assumption that a sufficient number of smoke vents had been installed as required by the provisions of law. The obtained results have been related to the hypothetical case where there were no smoke vents whatsoever. The stacking height of the merchandise gathered in the hall has been differentiated during the analysis as well. The numerical simulations have been performed with application of the FDS computer program. It has been assumed, that the fire had been initiated by a single source uniquely defined and initially limited in spatial area of influence. The results obtained indicate that the spatial and temporal fire development is different for each of the considered scenarios. The key role of the possible limitations in the exchange of gases between the area affected by fire and the environment, influencing the way and speed with which the fire propagates, has been confirmed during analysis.]]>
<![CDATA[Between early-Christian architectural form and postminimalism]]> Wed, 16 Oct 2019 15:38:16 +0200 Podhalanski, Boguslaw
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: We are currently observing a growing interest in the early Christian writings of hermits, the great eulogists of Christ. In modern religious architecture the manifestation of this interest is a return to the simple forms of early Christian temples. The problem, however, is the quality of this architecture and how it is received by the public. New temples, minimalist in form, so eagerly promoted in architectural professional journals, which are mainly to the liking of critics and architects, are rejected by the faithful. Could the reason for this be the fact that emptiness is excessively exhibited in their interiors? Emptiness is a certain type of synonym for nothingness, and nothingness remains in contradiction with the main message of Christianity. Contrary to the almost unchanged canon of the orthodox temple, the architecture of Catholic churches sees strong protestant influence. In extreme cases this leads to a sort of elimination of decorative forms which have traditionally been present in Catholic churches. The postminimalism that appears in religious architecture refrains from completely contesting interior decoration. We are currently seeing a return to decorative forms, techniques like the fresco or the mosaic, which are treated architecturally, analogously to how they were treated in the beginnings of Christianity. Simplicity, however, should not be mistaken for simplemindedness, which is why the demand for good Christian architecture and religious art is ceaselessly rising. The art of religious architecture, however, is based on the appropriateness of the architectural form in relation to the content that it expresses. The form of a church that is mistaken with the form of a discotheque should raise an eyebrow, especially that of its author, even when said author is a star of architecture.]]>
<![CDATA[Water elements in the creation of public space]]> Wed, 16 Oct 2019 15:34:22 +0200 Nowacka-Rejzner, Urszula
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The need to create high-quality sustainable urban structures is widely emphasized. An important place among the elements shaping a sustainable urban space is occupied by natural elements, including water. The importance of water results from its multifaceted impact both on the physical conditions of the city and its beauty. The article draws attention to the role of water elements in shaping public spaces in the areas of European cities. The role of water in the creation of public spaces and the very diverse range of functions fulfilled by it was emphasized in a particular manner. Among the water elements found in urban spaces, the largest group consists of fountains and bells and whistles. Over the centuries, these water elements played a variety of functions: utility, cult, aesthetic and climatic, while being a significant element of the composition. Selected examples presented in the article concern both historical and contemporary use of water in shaping urban squares and green park and garden spaces. Analysing contemporary examples, particular attention was paid to the use of water elements for ecological remodelling, as well as reviving and increasing the attractiveness of revitalized areas in the urban tissue. This interest in water as a material with a wide variety of possibilities, which results from its physical properties, resulted in a variety of functional and spatial solutions. The research and studies conducted for many years by the author regarding the participation of natural elements, including in particular water and greenery, in the shaping of urban structures were the basis for the considerations. The public spaces with water elements analysed in the paper are places with high aesthetic values. They serve recreation, rest, education, promote social bonding, and are often places for organizing various cultural events or historic happenings. Water in these spaces is not only an element of the composition, but also a factor shaping a special microclimate. The potential of water for the creation of urban space is enormous and still not fully utilized, which is confirmed by subsequent realizations, encouraging with artistic and technical solutions, indicating the ever new possibilities of using water. ]]>
<![CDATA[Can metropolitan region not be innovative?]]> Wed, 16 Oct 2019 15:27:16 +0200 Podhalanski, Boguslaw
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: One of the qualities of metropolises is their innovativeness. However, when we ask about the qualities of an innovative metropolitan region, the matter becomes somewhat complicated. The tasks of a metropolitan region concentrate around matters of supporting the functioning of its main centre. However, we should not assume that this support is only meant to take place in the form of simple economic functions like workforce accessibility, the providing of food, drinking water or fuel. Technological and industrial subcentres play an important role in a metropolitan region, their operation being directed at goals that the main centre works towards, which shows that if this support is to be efficient, then it has to be adapted to specific needs in a greater manner, in addition to meeting the criteria of innovativeness. In turn, if the subcentres are directed towards competitiveness, then they must tend to the development of their own creativity, which must result in increasing the degree of innovativeness of the activity that takes place inside them in all four types of innovation: product, process, marketing and organisational. From among the most commonly cited indicators of innovativeness, the number of patents is brought up the most frequently. Among Polish research institutions, the highest number of patents are being filed by universities and pharmaceutical companies, while territorially the most innovative region is that of the Warsaw metropolis. Innovation in urban planning and architecture is most often based on striving towards sustainable development, the minimisation of labour associated with transport and improving the quality of life of society, in addition to the adaptation of the latest technological solutions in building construction and the promoting of energy efficiency and the generation of renewable energy.]]>
<![CDATA[Shopping centre vs. railway station. Selected examples in Poland]]> Wed, 16 Oct 2019 15:12:32 +0200 Labuz, Rita
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: A modern shopping centre is often built as a multi-functional facility. It constitutes a place that generates the customer traffic, and consequently a demand for a relatively big number of parking spaces. A characteristic group of shopping centres are facilities erected in the vicinity of transport hubs, combining different means of transport. This study focuses on the shopping centres located near the railway stations. The railway station and the shopping centre are examples of buildings which fulfil different functions, and yet Poland has seen more and more projects combining these two types of facilities. This paper attempts to determine the influence of the shopping centre integrated with the railway station onto the functions and significance of the railway station building. It also touches upon the aspect of accessibility of the individual structures, particularly to pedestrians. Two shopping centres are considered herein within the scheme of the comparative analysis: "Galeria Krakowska" in Cracow and "Avenida" in Poznan. Both facilities came into being as parts of the construction of the new transport centres located near the main passenger railway stations in both cities. These areas are located in inner cities or nearby, which makes them the potential representational venues. In the result of the study, a tendency to the design shopping centres directly combined with a railway station, e.g. via passages with service outlets, has been observed. It seems that the railway station ceases to be a fully independent structure. In Cracow, it is located underneath the railway platforms, constituting a connector between the shopping centre and the coach station. In Poznan, the railway station is located above some of the railway stations and is linked with the "Avenida" shopping centre via a shopping passage. It has been observed that in both cases it is difficult to separate, both spatially and visually, the new railway station building from the building of the shopping centre, which seems to make the shopping centre take over the function of the edifice of the railway station, welcoming and bidding farewell to passengers. The building of the shopping centre in a way becomes the railway station building. The function of the transport hub, combining different means of transport, does not always entail comfortable pedestrian accessibility. For example in Poznan, some of the railway platforms are not accessible directly from the buildings of the railway station or the shopping centre. Furthermore, this paper points to the impact of such investments on the intended use of former railway station buildings. It has been observed that the adaptation of all the railway station buildings to the new functions in the examples referred to above took place several years after they had been closed down. The Author emphasises the need to determine the future use of old and often historic railway station buildings already at the stage of the investment planning.]]>
<![CDATA[Investigation of forced convective heat transfer from a block located staggered cavity with parallel and anti-parallel wall motion]]> Wed, 16 Oct 2019 15:05:33 +0200 Kannan, Meenakshi Sundar; Gurunathan, Manikandan; Kannap, Rajesh; Taler, Jan; Taler, Dawid; Oclon, Pawel
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The investigation reported in this paper is dealt about the steady-state laminar flow and heat transfer of a lid driven staggered cavity with the heated block. Based on the aspect ratio (AR = H/L = 0.5, H/L = 1, H/L = 2) three different block shapes are introduced for numerical experiments. The solid block with no slip and stationary wall condition is considered and it is located at the geometric center of the cavity. The simulations are carried out for Reynolds numbers 50, 100, 200, 300, 500, and 1000 and temperature of the block is 300 K. A clock-wise momentum is converged to the fluid, by the two driving lids on the top and bottom side of the cavity, lids are set into an anti-parallel wall motion. The upper lid moves to the right, while the lower one to the left, both are consider as same velocities. The results are found to be in good agreement with existing published results. It was found that the dynamics and the structure of the primary vortex and the corner vortices were strongly affected by the Reynolds number. The investigation clearly describes that increasing the Reynolds number values the overall drag coefficient decreases, similarly the value of average Nusselt number also increases with an increasing Reynolds number for all the values of different blocks under studied. The study reveals the important flow physics such as flow separation, boundary-layer and recirculation. The results will be beneficial for similar situation occur in many industrial problems.]]>
<![CDATA[Uwarunkowania przestrzenne planowania głównych ciągów transportowych na przykładzie ulicy Zakopiańskiej w Krakowie]]> Wed, 16 Oct 2019 14:13:53 +0200 Banet, Krystian
rodzaj: rozdział/fragment książki
Abstrakt: Dokumenty planistyczne zawierają w sobie różnego rodzaju określenia, które są charakterystyczne dla danych miast. Zwraca się z nich uwagę na różne aspekty przestrzenne, funkcjonalne czy kompozycyjne. W Studium Uwarunkowań i Kierunków Zagospodarowania Przestrzennego Miasta Krakowa pojawiają się zapisy na temat rozróżnienia ciągów miejskich oraz wyróżnienia głównych handlowych ulic. Wśród głównych ciągów miejskich znajduje się ulica Zakopiańska tworząca oś kompozycyjną na południu Krakowa. Obecny wygląd ulicy nie wpisuje się w postawione w dokumencie założenia kształtowania głównych ciągów miejskich. W wielu fragmentach widać chaos przestrzenny, który spowodowany jest między innymi brakiem pokrycia tego terenu miejscowymi planami zagospodarowania przestrzennego. Dodatkowo arteria jest przykładem planowania z myślą o użytkownikach samochodów i na próżno szukać na niej rozwiązań ułatwiających poruszanie się pieszym, przez co ulica ta stanowi istotną barierę przestrzenną. W artykule przedstawiono dogłębną analizę omawianego ciągu oraz podjęto próbę wskazania kierunków zmian celem realizacji zapisów Studium.]]>
<![CDATA[Deactivation of damage effects]]> Wed, 16 Oct 2019 14:09:35 +0200 Ganczarski, Artur; Egner, Halina; Cegielski, Marcin
rodzaj: rozdział/fragment książki
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<![CDATA[Międzynarodowe umowy celne]]> Wed, 16 Oct 2019 13:02:05 +0200 Bryniarska, Zofia
rodzaj: rozdział/fragment książki
Abstrakt: Rozdział zawiera przegląd zagadnień dotyczących międzynarodowych umów i procedur celnych oraz przewozów tranzytowych (konwencje TIR i WPT). Omówiono również procedury odprawy warunkowej ATA i CPD. ]]>
<![CDATA[Międzynarodowe uwarunkowania prawne przewozów rzeczy]]> Wed, 16 Oct 2019 12:58:18 +0200 Bryniarska, Zofia
rodzaj: rozdział/fragment książki
Abstrakt: W rozdziale przedstawiono uwarunkowania wynikające z umowy o międzynarodowym przewozie drogowym towarów, umów, konwencji i dyrektyw dotyczących wybranych grup towarów, także towarów wrażliwych, czyli towarów niebezpiecznych według umowy ADR, odpadów niebezpiecznych według konwencji bazylejskiej oraz szybko psujących się artykułów żywnościowych według umowy ATP. Przybliżono też międzynarodowe formuły wykładni terminów handlowych Incoterms.]]>
<![CDATA[Czas pracy załóg wykonujących transport drogowy]]> Wed, 16 Oct 2019 12:56:10 +0200 Chyba, Andrzej
rodzaj: rozdział/fragment książki
Abstrakt: W rozdziale przeprowadzono szczegółową analizę czasu pracy kierowców oraz wymagań wobec kierowców. Treści przedstawione w rozdziale są eksponowane w kontekście obowiązującego w tym zakresie prawa europejskiego i prawa polskiego. Szczegółowo przeanalizowano normy czasu prowadzenia pojazdów przez kierowców oraz odpowiedzialność przedsiębiorstw transportowych za przestrzeganie przepisów dotyczących czasu pracy kierowców oraz prowadzenie ewidencji ich czasu pracy.]]>
<![CDATA[Heat transfer coefficient in elliptical tube at the constant heat flux]]> Wed, 16 Oct 2019 12:43:25 +0200 Lopata, Stanislaw; Ocloń, Pawel; Stelmach, Tomasz; Markowski, Pawel
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Cross-flow heat exchangers with elliptical tubes are often used in industrial ap-plication. In comparison with round tubes, the elliptical tubes have a better aero-dynamic shape, which results in a lower pressure drop of working fluid flowing through the inter-tubular space of heat exchanger. Also, a higher heat flux is transferred from gas to the wall of such a tube due to the more intense heat ex-change process. To prove this thesis, the values of the heat transfer coefficient from the wall of the elliptical pipe to the water flowing inside were determined, using the data from the conducted measurements. This study presents also re-search stand with a vertically positioned tube. In order to obtain a constant heat flux through the wall of elliptical tube, a resistance wire is used, evenly wound on the external surface of tube measuring section. The use of thermal insulation min-imized heat loss to the environment to a negligible value. Installed K-type ther-mocouples allowed one to obtain, for various measurement conditions, the tem-perature distribution within the elliptical tube wall (for a given cross-section) and the water flowing inside it (in a given cross-section, at different depths, for both axes of the ellipse). The design of the stand allows such measurements in several locations along the length of the measurement section. The measurement results were used to verify numerical calculations. The relative error of the heat transfer coefficient value determined on the basis of CFD calculations using the SST-TR turbulence model in relation to the one determined on the basis of the measurement data is about 11%.]]>
<![CDATA[Verification of applicability of the two-equation turbulence models for temperature distribution in transitional flow in an elliptical tube]]> Wed, 16 Oct 2019 12:39:49 +0200 Lopata, Stanislaw; Oclon, Pawel
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: To increase the efficiency, elliptical tubes are often used in cross-flow heat ex-changers. For these kinds of heat exchangers the flow field in the tubes exhibits irregularities. Therefore, various flow regimes can be observed: the turbulent, the transitional, and even the laminar one. Therefore, applying typical turbulence models for numerical calculations may cause significant errors, when flow in the heat exchanger tubes is in the transitional or laminar regime. Hence, the average values of flow velocities and temperature in heat exchanger tubes can be calcu-lated incorrectly. The paper presents empirical verification of applying the basic two-equation turbulence models for a transitional flow of water in an elliptical pipe of a heat exchanger.]]>
<![CDATA[Zarządzanie przedsiębiorstwem transportowym]]> Wed, 16 Oct 2019 12:17:18 +0200 Starowicz, Wiesław; Szałkowski, Mariusz
rodzaj: rozdział/fragment książki
Abstrakt: Rozdział zawiera encyklopedyczną wiedzę dotyczącą problemów organizacji i zarządzania przedsiębiorstwem transportowym. Zwrócono uwagę na problemy określania strategii rozwoju przedsiębiorstwa poprzez analizę SWOT. Uwzględniono też problemy zarządzania jakością przedsiębiorstwa i zarządzania jakością przewozów w transporcie zbiorowym eksponując europejską i polską normę jakości. Materiał zawarty w rozdziale jest szczególnie adresowany do kadry zarządzającej przedsiębiorstwem, chcącej poszerzać swoją wiedzę.]]>
<![CDATA[Organizacja i technologia przewozu osób oraz rzeczy]]> Wed, 16 Oct 2019 12:13:45 +0200 Bryniarska, Zofia; Chyba, Andrzej; Starowicz, Wiesław
rodzaj: rozdział/fragment książki
Abstrakt: W rozdziale przedstawiono podstawowe zagadnienia związane z wykonywaniem przewozów. Szczególną uwagę zwrócono na publiczny transport zbiorowy. Omówiono problemy przewozów okazjonalnych regulowanych umową INTERBUS. W przewozie zwierząt uwzględniono specyfikę transportu żywności, zwierząt, materiałów niebezpiecznych i odpadów. Uwzględniono zasady organizacji transportu intermodalnego.]]>
<![CDATA[Podstawy funkcjonowania podmiotów gospodarczych na rynku transportu drogowego oraz publicznego transportu zbiorowego]]> Wed, 16 Oct 2019 12:07:32 +0200 Starowicz, Wiesław
rodzaj: rozdział/fragment książki
Abstrakt: Rozdział zawiera wiedzę na temat podejmowania i wykonywania krajowego transportu drogowego w tym, uzyskiwania licencji i zezwoleń, certyfikacji przewoźników, opłat oraz kontroli przewozów i przedsiębiorstw. Tłem do rozważań są regulacje Unii Europejskiej, a podstawą rozważań regulacje polskie.]]>
<![CDATA[Problemy komunikacyjne północnych dzielnic Krakowa]]> Wed, 16 Oct 2019 12:03:42 +0200 Szabłowska, Paulina; Rochel, Maciej
rodzaj: rozdział/fragment książki
Abstrakt: W artykule opracowano syntezę układu urbanistycznego i komunikacyjnego północnej części Krakowa na przykładzie dzielnicy Prądnik Biały, przedstawiono negatywne efekty i przyczyny chaotycznego rozwoju tej części miasta – zjawisko eksurbanizacji, urbanistyki łanowej, niedostosowania istniejącej infrastruktury komunikacyjnej do istniejących potoków ruchu, a także niską dostępność transportu publicznego. Dodatkowo poruszono kwestię pokrycia terenu miejscowymi planami zagospodarowania przestrzennego oraz odniesiono się do studium uwarunkowań i kierunków zagospodarowania przestrzennego. Następnie opisano jakie plany rozwoju tej części miasta, szczególnie pod względem transportowym, mają władze Krakowa oraz przygotowano alternatywną koncepcję rozwiązania problemów komunikacyjnych, opartą o założenia zrównoważonego transportu. Ponadto przedstawiono jak w Wiedniu zaplanowano budowę od podstaw nowej dzielnicy Aspern Seestadt.]]>
<![CDATA[Skałka]]> Wed, 16 Oct 2019 11:11:39 +0200 Muczkowski, Józef
rodzaj: opis bibliograficzny książki
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<![CDATA[Weryfikacja powykonawcza izolacyjności akustycznej lekkich ścian działowych z płyt gipsowo-kartonowych w budynku biurowym w Warszawie]]> Wed, 16 Oct 2019 09:46:28 +0200 Nering, Krzysztof
rodzaj: artykuł w czasopiśmie
Abstrakt: Przeanalizowano 17 ścian działowych typu 125A75 znajdujących się pomiędzy pokojami w budynku biurowym. Pomiary izolacyjności akustycznej wykonano bez i z pasem z wełny mineralnej znajdującym się z obu stron przy ścianie działowej na suficie podwieszanym. W przestrzeni nadsufitowej były kanały wentylacyjne łączące bezpośrednio pomieszczenia rozdzielone ścianą.Wyniki pomiarów in situ wskazują na dużą różnicę między wartościami deklarowanymi przez producentów rozwiązań suchej zabudowy i wynikami obliczeń izolacyjności ustrojów rezonansowych, co jest spowodowane brakiem uwzględnienia w podawanych wartościach i w obliczeniach przenoszenia bocznego i pośredniego. W artykule pokazano również wpływ zastosowania pasa z wełny mineralnej w przestrzeni podsufitowej na izolacyjność akustyczną badanych ścian.]]>
<![CDATA[Projektowanie dachów stromych]]> Wed, 16 Oct 2019 09:17:02 +0200 Kochański, Tomasz; Kram, Dorota; Śliwa-Wieczorek, Klaudia
rodzaj: artykuł w czasopiśmie
Abstrakt: Dach jako część obiektu budowlanego musi spełniać szereg wymagań stawianych w przepisach, m.in. w warunkach technicznych [N2] oraz musi być wznoszony zgodnie z zasadami wiedzy technicznej.]]>
<![CDATA[Earthen forms in landscape architecture – from geoglyphs to contemporary urban parks]]> Wed, 16 Oct 2019 08:55:34 +0200 Porada, Karolina
rodzaj: artykuł w czasopiśmie
Abstrakt: Kształtowanie form ziemnych wnosi do architektury krajobrazu istotne wartości kulturowe i od wieków motywuje do niestandardowych rozwiązań oraz innowacji – chociażby pod względem technologii budowy oraz ich zabezpieczenia i utrzymywania. Modelowane przez człowieka skarpy, tarasy, nasypy, kopce, wały czy doły są rozpoznawalnymi artefaktami, z których część stanowi jednocześnie swoiste archetypy. Artykuł ma na celu zaprezentowanie krótkiego przeglądu stosowania form ziemnych w projektowaniu krajobrazu, a także określenie, w jaki sposób geneza ich powstawania ulegała przemianom na przestrzeni wieków, począwszy od wartości symbolicznych aż po takie motywacje jak ekologia, recykling czy rekultywacja terenów postindustrialnych.]]>
<![CDATA[Kleparz do 1528 roku]]> Wed, 16 Oct 2019 08:38:17 +0200 Dzikówna, Janina
rodzaj: opis bibliograficzny książki
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<![CDATA[Framework for onboard bus comfort level predictions using the markov chain concept]]> Wed, 16 Oct 2019 08:30:04 +0200 Więcek, Paweł; Kubek, Daniel; Aleksandrowicz, Jan Hipolit; Stróżek, Aleksandra
rodzaj: artykuł w czasopiśmie
Abstrakt: Efficiently functioning public transport has a significant positive impact on the entire transportation system performance through numerous aspects, such as the reduction of congestion, energy consumption, and emissions. In most cases, the basic elements of public transport are the bus transport subsystem. Currently, in addition to criteria such as punctuality, the frequency of departures, and the number of transfers, a travelling comfort level is an important element for passengers. An overcrowded bus may discourage travelers from choosing this mode of transport and induce them to use a private car despite the existence of many other facilities offered by a given public transport system. Therefore, the forecasting of bus passenger demand, as well as bus occupancy at individual bus stops, is currently an important research direction. The main goal of the article is to present the conceptual framework for the Advanced Travel Information System with the prediction module. The proposed approach assumes that the prediction module is based on the use of the Markov Chain concept. The efficiency and accuracy of the obtained prediction were presented based on a real-life example, where the measurements of passengers boarding and alighting at bus stops were made in a selected Cracow bus line. The methodology presented in the paper and the obtained results can significantly contribute to the development of solutions and systems for a better management as well as a cost and energy consumption optimisation in the public transport system. Current and forecasted information related to bus occupancy, when properly used in the travel information system, may have a positive impact on the development of urban mobility patterns by encouraging the use of public transport. This article addresses the current and practical research problem using an adequate theoretical mathematical tool to describe it, reflecting the characteristics and nature of the phenomenon being studied. To the best of the authors’ knowledge, the article deals for the first time with the problem of prediction of onboard bus comfort levels based on in-vehicle occupancy.]]>
<![CDATA[Nowe rozwiązania stropów prefabrykowanych]]> Wed, 16 Oct 2019 08:20:05 +0200 Derkowski, Wit
rodzaj: artykuł w czasopiśmie
Abstrakt: Concrete floors constitute the vast majority of all types of floors erected worldwide. They do not require additional fire protection measures or periodical maintenance work that is necessary in the case of steel components, thus reducing the cost of their exploitation. Special concretes and prestressing technology are increasingly common in the production of concrete floors. The desire to de-load the structure is the driving force behind looking for ways of applying light-aggregate concretes in floor production. The application of fine-grain high performance concretes with textile carbon fibres reinforcement in concrete prefabrication processes seems an interesting solution, allowing for incomparably smaller cross-sections of the used elements than the components currently used in the traditional reinforced concrete technology. Although innovations in the area of on-site RC construction are not uncommon, prefabrication still constitutes a technology that is the most open to creating and implementing new and unconventional solutions in the construction industry.]]>
<![CDATA[Dziedzictwo kulturowe: spuścizna ludzkiej kreatywności i ekspresji: unikatowe zbiory Biblioteki Politechniki Krakowskiej zdigitalizowane w ramach projektu EDT]]> Wed, 16 Oct 2019 08:14:59 +0200 Radzicka, Joanna; Gałek, Helena
rodzaj: artykuł w czasopiśmie
Abstrakt: Celem artykułu jest przedstawienie rzadkich i cennych dokumentów zgromadzonych w Bibliotece Politechniki Krakowskiej i zdigitalizowanych w ramach projektu „Europejskie Dziedzictwo Techniczne”. Kolekcja, składająca się z książek i czasopism pochodzących z XVIII-XX wieku, bogata jest w proweniencje (ekslibrisy, znaczki, podpisy odręczne, notatki lub dedykacje autora). Materiały te stanowią ciekawy zasób badawczy dla naukowców, studentów i entuzjastów europejskiej historii i dziedzictwa. Z jednej strony kolekcja odzwierciedla historię uniwersytetów i osób z nimi związanych, a z drugiej strony dostarcza wiedzy na temat dziedzictwa historycznego, kulturowego i naukowego Polski i Europy. Przy współpracy z pracownikami Akademii Górniczo-Hutniczej (AGH) stworzono platformę internetową, na której umieszczono zbiory nigdy wcześniej nie opublikowane w wersji cyfrowej.]]>
<![CDATA[Elementy wnętrz domowych we współczesnych przestrzeniach biurowych – rozwiązania i tendencje]]> Wed, 16 Oct 2019 07:47:45 +0200 Taczalska-Ryniak, Anna
rodzaj: artykuł w czasopiśmie
Abstrakt: Głównym tematem artykułu jest zjawisko udomawiania przestrzeni biurowej, a mianowicie nowej tendencji projektowej polegającej na wprowadzaniu do współczesnych biur form charakterystycznych dla wnętrz mieszkalnych. Na potrzeby publikacji, pod kątem wykorzystywanych układów funkcjonalnych i ich modyfikacji, oraz zastosowanych elementów i materiałów wykończeniowych zostaną przeanalizowane wybrane wnętrza biurowe w ośrodkach polskich, oraz w krajach Europy Zachodniej, powstałe w ostatnich latach.]]>
<![CDATA[Ulice i place Krakowa w ciągu dziejów : ich nazwy i zmiany postaci]]> Tue, 15 Oct 2019 15:10:20 +0200 Tomkowicz, Stanisław
rodzaj: opis bibliograficzny książki
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<![CDATA[Dziedzictwo Europy tematem konferencji Biblioteki PK]]> Tue, 15 Oct 2019 14:30:34 +0200 Wiatr, Krystyna
rodzaj: artykuł w czasopiśmie
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<![CDATA[Digitalizacja przybliża dorobek pokoleń. Konferencja „Europejskie dziedzictwo w otwartych kolekcjach cyfrowych"]]> Tue, 15 Oct 2019 14:10:41 +0200 Wiatr, Krystyna
rodzaj: artykuł w czasopiśmie
Abstrakt: Omówienie zagadnień związanych z zachowaniem europejskiego dziedzictwa kulturowego oraz podkreślenie działań, które pozwalają zwiększyć powszechny i otwarty dostęp do publikacji naukowych, stanowiących część owego dziedzictwa, było celem konferencji naukowej „Europejskie dziedzictwo w otwartych kolekcjach cyfrowych”. Spotkanie, zorganizowane przez Bibliotekę Politechniki Krakowskiej, odbyło się 26 marca 2019 r. w sali konferencyjnej pawilonu „Kotłownia”.]]>
<![CDATA[Świętowano pod hasłem: #biblioteka]]> Tue, 15 Oct 2019 14:06:24 +0200 Wiatr, Krystyna
rodzaj: artykuł w czasopiśmie
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<![CDATA[Zachęta (DO)WOLNOŚCI CZYTANIA]]> Tue, 15 Oct 2019 14:04:08 +0200 Wiatr, Krystyna
rodzaj: artykuł w czasopiśmie
Abstrakt: Tydzień Biblioteki PK będziemy świętować od 14 do 19 maja pod hasłem (DO)WOLNOŚĆ CZYTANIA. Dla studentów, pracowników oraz przyjaciół bibliotekarze przygotowali wiele atrakcji. Całotygodniowej imprezie towarzyszyć będzie obniżka opłat za przetrzymywanie książek, konkursy na facebookowym profilu Biblioteki oraz konkurs „Biblioteka PK w moim obiektywie” na nowym bibliotecznym profilu Instagram.]]>
<![CDATA[Biblioteka. Oczywiście! Ogólnopolski Tydzień Bibliotek po raz XIV]]> Tue, 15 Oct 2019 14:00:01 +0200 Wiatr, Krystyna
rodzaj: artykuł w czasopiśmie
Abstrakt: Co roku w maju Biblioteka PK przygotowuje wiele atrakcji dla pracowników i studentów uczelni, by uczcić swoje święto. Zresztą nie tylko swoje, bo w akcji Stowarzyszenia Bibliotekarzy Polskich — Ogólnopolskim Tygodniu Bibliotek — udział biorą prawie wszystkie polskie instytucje, które zajmują się gromadzeniem i udostępnianiem księgozbioru. W tym roku obchody, pod ogólnopolskim hasłem: „Biblioteka. Oczywiście!”, wyznaczono od 8 do 15 maja.]]>
<![CDATA[Study on thermal insulation of liquefied natural gas cryogenic road tanker]]> Tue, 15 Oct 2019 13:56:40 +0200 Lisowski, Edward; Lisowski, Filip
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The tanks designed for liquefied natural gas transport must be thermally insulated from the environment due to the low condensing temperature of the gas. The effectiveness of thermal insulation significantly affects the tank's operating parameters and its operating costs. As there is no perfect insulation, there is a need for analyses that would determine its suitability in specific applications. In this paper the issue of heat transfer through double-walled cryogenic tanks with evacuated insulation system was discussed. Afterwards the study of insulation variants of liquefied natural gas cryogenic road tanker was presented. The use of several layers of insulation made of modern and efficient materials such as aerogel and fiberglass or the use of multi-layer isolation has been considered and compared to the use of perlite powder. The heat flux through insulation systems was tested for different variants of evacuated insulation under residual gas pressure of 10–1 Pa, 10–3 Pa, and 100 kPa. Finally, for selected insulation variants, the heat leakage was tested for 50 m 3 liquefied natural gas road tanker. The investigation of heat-flow for the transient thermal analysis was performed by applying finite element method. The aim of the study was to determine the variant of insulation system with the relatively low heat leakage to the tank and low cost of materials and vacuum production]]>
<![CDATA[Numerical investigation of heat transfer from flow over square cylinder placed in a confined channel using Cu-water nanofluid]]> Tue, 15 Oct 2019 13:30:36 +0200 Athinarayanan, Arun Senthil Kumar; Gurunathan, Manikandan; Parthasarathy, Rajesh Kanna; Taler, Jan; Oclon, Pawel; Taler, Dawid
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Laminar forced convection heat transfer from 2-D flow over a square cylinder placed in a confined adiabatic channel is studied numerically. The governing equations are solved using unsteady stream function-vorticity method. The effect of volume fraction of the nanoparticles are tested for different Reynolds number in laminar range. Fluid dynamics and heat transfer results were reported for steady-state condition. Local Nusselt number and average Nusselt number are reported in connection with volume fraction and Reynolds number for blockage ratio of 0.25. Square cylinder’s front wall results maximum Nusselt number whereas rear wall shows smaller Nusselt number. Wall attached pair of vortices appeared rear side of cylinder for Reynolds number varying from 10 to 40 and volume fraction varies from 0.0 to 0.1. The size of symmetry vortices linearly increases when Reynolds number or volume fraction is increased. The drag coefficient is more pronounced to the variation in Reynolds number and volume fraction rather lift coefficient.]]>
<![CDATA[On-line monitoring of the fouling of the boiler heating surfaces]]> Tue, 15 Oct 2019 13:28:22 +0200 Trojan, Marcin; Taler, Dawid; Wielgus, Szymon
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The designed system for the monitoring of the fouling of the furnace and superheaters/reheaters, presented in the paper, will make it possible to operate the boiler with high efficiency. Measurements of temperatures, pressures, flows, and gas analysis data are used to perform heat transfer analysis in the boiler furnace and evaporator. Power boiler efficiency is calculated by an indirect method. The local and average degree of the combustion chamber slagging is determined in an "on-line" mode. In the case of superheaters, the fouling coefficient is determined for each superheater stage, due to big differences in ash-related fouling of individual stages. Fouling processes deteriorate the boiler capacity and efficiency and increase the rate of corrosion of the boiler heating surfaces. The energy consumption of flue gas fans rises as well because the accumulation of slag and ash involves higher pressure losses at individual superheater stages. In addition, examples of ash fouling of individual boiler heating surfaces are presented and discussed in the paper.]]>
<![CDATA[Približennoe opredelenie èksergii topliv]]> Tue, 15 Oct 2019 13:27:16 +0200 Šargut, Â.; Stirilʹskaâ, T.
rodzaj: rozdział/fragment książki
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<![CDATA[Simulation of the operation of the car radiator with a laminar, transitional, and turbulent regime of liquid flow in the tubes]]> Tue, 15 Oct 2019 13:25:48 +0200 Taler, Dawid
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The results of the simulation of car radiator operation with a large range of changes in the volume flow rate of liquid inside the tubes were presented. The change of the flow regime from laminar through transitional to turbulent flow was taken into account. Semi-empirical and empirical relationships for the Nusselt number on the liquid-side in the laminar, transitional, and turbulent range were used. The Nusselt number on the air side was determined using empirical power-type correlation. The friction factor in the transition flow range was calculated by linear interpolation between the values of the friction factor for the Reynolds number equal to 2100 and 3000. The water and air temperature at the outlet of the heat exchanger were calculated using effectiveness-number of transfer units method. The heat-flow rate from water to air was calculated as a function of the water-flow rate to compare it with the experimental results. The calculation results agreed very well with the results of the measurements.]]>
<![CDATA[The combustion of polyolefins in inert and catalytic fluidised beds]]> Tue, 15 Oct 2019 13:23:33 +0200 Żukowski, Witold; Berkowicz, Gabriela
rodzaj: artykuł w czasopiśmie
Abstrakt: The thermal degradation of polyethylene and polypropylene were performed in three types of fluidised bed consisting of sand, inert hollow microspheres (cenospheres) with a density of <1 g/cm3, or the same cenospheres covered with Fe2O3. For the first time, the cenospheres were proposed as material of fluidised bed that allowed the immersion of polymeric material. With regard to combustion, this is organised inside a fluidised bed reactor consisting of sand as the bed material; the combustion of polyolefins occurs in the freeboard with considerable soot formation. Based on acoustic and video analyses, it was proven that the combustion of polyolefins in the cenospheric fluidised bed reactor occurs inside the fluidised bed. It takes the form of explosions in the bubbles or takes place in the emulsion phase. In the cenospheric fluidised bed, a 97–99% yield of polyolefin conversion can be achieved at 800 °C. Catalytic combustion in the fluidised bed reactor was also proposed, for this, catalytic bed material was prepared by chemical Fe2O3 deposition on the cenospheres. As precursor Fe(CO)5 was used.]]>
<![CDATA[Problematyka współczesnych złączy w konstrukcjach drewnianych]]> Tue, 15 Oct 2019 13:18:44 +0200 Kochański, Tomasz; Kram, Dorota; Śliwa-Wieczorek, Klaudia
rodzaj: artykuł w czasopiśmie
Abstrakt: Intensywne zmiany zachodzące w technice połączeń konstrukcji drewnianych oraz ujednolicanie europejskiego rynku w zakresie wyrobów wymagają od inżyniera uważnego śledzenia zmian. Sama znajomość zaleceń Eurokodu 5 nie zawsze jest wystarczająca, na rynku pokazują się nowe łączniki i nowe ich zastosowania, za którymi norma czasem nie nadąża. W artykule podjęto próbę przedstawienia tych zagadnień przede wszystkim dla łączników trzpieniowych (najczęściej występujących na polskim rynku) oraz źródeł pobierania danych przy ich zastosowaniu.]]>
<![CDATA[Rozwiązania materiałowe stropodachów nad halami basenowymi]]> Tue, 15 Oct 2019 13:15:56 +0200 Byrdy, Aleksander
rodzaj: artykuł w czasopiśmie
Abstrakt: Przedmiotem artykułu jest szczelność dachów wielkopowierzchniowych nad krytymi basenami kąpielowymi. Autor na początek omawia warunki klimatu wewnętrznego pomieszczeń hal basenowych. Następnie przytacza typowe rozwiązania stropodachów nad basenami krytymi, po czym dokonuje analizy przepływu pary wodnej przez stropodachy. Na koniec prezentuje zalecane rozwiązania będące alternatywą dla stropodachów wentylowanych.]]>
<![CDATA[Wpływ pojazdów zautomatyzowanych na ruch oraz projektowanie infrastruktury drogowej – próba oceny]]> Tue, 15 Oct 2019 13:11:43 +0200 Kozaczka, Nina; Gaca, Stanisław
rodzaj: artykuł w czasopiśmie
Abstrakt: W artykule podjęto próbę oceny potencjalnego wpływu pojazdów autonomicznych na projektowanie infrastruktury drogowej oraz na warunki i bezpieczeństwo ruchu. Przedstawiono charakterystykę poszczególnych poziomów automatyzacji oraz wyposażenie pojazdów samosterujących. Zwrócono uwagę na korzyści płynące z rozwoju systemów komunikacji pomiędzy pojazdami a otoczeniem. Zauważono możliwy negatywny wpływ pojazdów częściowo zautomatyzowanych na przepustowość dróg w przypadku występowania ruchu mieszanego, tj. pojazdów zautomatyzowanych i konwencjonalnych. Przedstawiono także potencjalne potrzeby w dostosowaniu infrastruktury drogowej do ruchu pojazdów zautomatyzowanych. Bliżej przedstawiono rozwiązanie zakładające wydzielenie pasa ruchu dla pojazdów zautomatyzowanych, jako elementu poprawiającego płynność i bezpieczeństwo ruchu, przy wysokim udziale tych pojazdów. ]]>
<![CDATA[Zamówienia na roboty dodatkowe w drogowych inwestycjach publicznych]]> Tue, 15 Oct 2019 12:37:48 +0200 Juszczyk, Michał; Leśniak, Agnieszka; Zima, Krzysztof
rodzaj: artykuł w czasopiśmie
Abstrakt: Roboty dodatkowe pojawiające się na etapie wykonawstwa robót są często występującym elementem w realizacji inwestycji budowlanych. Można je zdefiniować jako te roboty, których nie przewidziano na etapie sporządzania dokumentacji projektowej. Przyczyną ich wystąpienia mogą być: konieczność ich wykonania, gdy stają się niezbędne do realizacji zamówienia podstawowego, lub życzenie inwestora, który zdecydował się na wprowadzenie pewnych dodaktowych prac (np. rozszerzenie zakresu robót).]]>
<![CDATA[A simulation model for regenerated objects with multiparameter evaluation of technical condition reliability estimation]]> Tue, 15 Oct 2019 12:33:02 +0200 Młynarski, Stanisław; Pilch, Robert; Smolnik, Maksymilian; Szybka, Jan; Wiązania, Grzegorz
rodzaj: artykuł w czasopiśmie
Abstrakt: The paper presents the developed simulation model allowing one to estimate the reliability of objects whose technical condition is described by a set of geometrical features. Their values change during operation because of the wearing processes of the part under consideration. The operational availability (or unavailability) of a technical object is determined by the evaluation conducted using a set of criteria referring to its analysed features. In addition, the proposed model enables one to take into account the regeneration of such objects.]]>
<![CDATA[A housing market analysis for the city of Krakow]]> Tue, 15 Oct 2019 12:30:39 +0200 Adamkiewicz, Dagmara; Radziszewska-Zielina, Elżbieta
rodzaj: artykuł w czasopiśmie
Abstrakt: This article presents the results of a housing market analysis for the city of Krakow. The market study was performed in May 2019 using the online survey method on a group of 104 persons who were currently searching for an apartment. Based on initial studies, the authors analysed the opinions of potential customers, identified the apartments enjoying the highest demand, described the preferences of potential buyers and the criteria that encourage buying real estate to the greatest extent. Based on the results of the study, it can be concluded that the perceived need for persons to have their own apartment is the most common reason for purchasing a property. The most desirable housing has between 40 and 60 square metres of usable floor area, is composed of three rooms, in addition to a kitchen and a bathroom, and has its own dedicated parking space.]]>
<![CDATA[Experimental determination of the heat transfer coefficient in internally rifled tubes]]> Tue, 15 Oct 2019 12:28:26 +0200 Gradziel, Slawomir; Majewski, Karol; Majdak, Marek
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Development of the heat transfer surfaces on the tube inside makes it very difficult or even impossible to determine the heat transfer coefficient analytically. This paper presents the experimental determination of the coefficient in an internally rifled tube with spiral ribs. The tests are carried out on a laboratory stand constructed at the Institute of Thermal Power Engineering of the Cracow University of Technology. The tube under analysis has found application in a supercritical circulating fluidized bed boiler. The heat transfer coefficient local values are determined for the Reynolds numbers included in the range of ~6000 to ~50000 and for three ranges of the heating elements power. As the medium flows through internally rifled tubes with spiral ribs, the heat transfer process gets intensified compared to similar processes taking place in smooth tubes. Based on the obtained experimental data, a correlation is developed enabling determination of the dimensionless Chilton-Colburn j factor. The equation form is selected so that a comparison with existing results of tests performed on rifled tubes can be made. Comparing the Nusselt number values calculated based on the developed correlation with those obtained using other correlations described in the literature, it can be observed that the criterial number is about twice higher. The research results confirm the thesis that the element internal geometry has a sub-stantial impact on the heat transfer process. ]]>
<![CDATA[Houses and skyscrapers of Manhattan – a horizontal or vertical city?]]> Tue, 15 Oct 2019 12:23:54 +0200 Twardowski, Mariusz; Żabicka, Agnieszka; Ros Campos, Andrés
rodzaj: artykuł w czasopiśmie
Abstrakt: Residential towers undeniably changed the reality that surrounds us. Vertical structures have influenced the landscape of cities by shaping new, previously unknown panoramas. Infinite peripheries were split and reassembled again in the vertical form. Is it possible to create a comfortable living space in a small area? Can residential towers fit into a fully fledged and well-functioning urban structure? Problematic aspects of this scenario are discussed on the basis of the most representative example in the world, which is Manhattan, located in New York City. Analysis of the urban structure of specific districts and examples of residential towers enables the presentation of the differences, advantages and disadvantages resulting from a specific given forms of architecture and urban planning.]]>
<![CDATA[Lipnica Murowana – historic heritage and its conservation protection]]> Tue, 15 Oct 2019 12:20:09 +0200 Krupa, Michał; Budziakowski, Mateusz
rodzaj: artykuł w czasopiśmie
Abstrakt: The article presents the cultural heritage of the mediaeval town of Lipnica Murowana, located in Lesser Poland in Bochnia County. This historic town can boast valuable architectonic and urban design buildings. These are the church of St. Leonard; the church of St. Andrew the Apostle; the church of St. Simon; the Starost’s House; the Ledóchowski Manor; the school building, relics of town housing and, primarily, the mediaeval urban layout with a market square. The article presents the history of the abovementioned historic buildings and spaces, and analyses their current protection and conservation guidelines.]]>
<![CDATA[Difficulties with existing fish passes and their renovation. The pool fish pass on Dłubnia River in Krakow]]> Tue, 15 Oct 2019 12:17:05 +0200 Radecki-Pawlik, Artur; Voicu, Răzvan; Plesiński, Karol; Gajda, Grzegorz; Radecki-Pawlik, Bartosz; Voicu, Liliana; Książek, Leszek
rodzaj: artykuł w czasopiśmie
Abstrakt: The aim of study The aim of study was to determine, how the pool fish pass located on the Dłubnia River operates and to formulate recommendations, due to which it will work effectively and will not be an obstacle for migrating fish. Materials and methods Field work. Identification of elements of fish pass that may restrict fish migration on the grounds of standard geometrical dimensions. An attempt to design its repair. Results and conclusions The fish pass does not operate effectively. The paper presents recommendations for its improvement.]]>
<![CDATA[Numerical investigations of stress concentration in reinforcement steel structure by composite overlays]]> Tue, 15 Oct 2019 12:04:46 +0200 Szybiński, Bogdan; Wygoda, Mateusz
rodzaj: artykuł w czasopiśmie
Abstrakt: The stress concentration observed in the vicinity of cut-outs and holes in structural elements significantly influences the fatigue endurance of machines subjected to cyclic loads. Numerous studies have been made so far to improve this situation and increase the structure life-time. Several design recommendations have also been worked out to avoid the problem of premature failure. The proposed paper illustrates the influence of the composite overlays applied around the cut-outs made in flat steel constructional elements subjected to axial tension. The detailed study concerns the reinforcement made from the FRP (fiber reinforcement polymer) composite applied around the notches. Two types of composite materials were used, namely: TVR 380 M12/R-glass (glass fibers embedded in epoxy resin matrix) and AS4D/9310 (carbon fibers embedded in epoxy resin matrix). In the first step, the detailed numerical studies (finite element analysis) were performed for the steel samples (with no overlays added) with cut-outs made in the form of circle, square and triangle hole (the last two with rounded corners). The results of these studies were compared with the existing analytical solutions with respect to the stress concentration factors (SCF) estimation. The relatively good conformity was observed when using dense meshes of finite elements placed around the void vicinity. In the next step, the composite overlays were applied around cut-outs and their influence on the stress concentration was investigated. The influence of the fiber orientation, numbers of layers, sizes of the composite overlay used were considered. It was proved that the application of composite overlays evidently decreases the stress concentration around the notches.]]>
<![CDATA[Assessment of ground vibrations induced by gas and oil well drilling using numerical simulations]]> Tue, 15 Oct 2019 11:57:14 +0200 Truty, Andrzej; Pilecki, Zenon; Stypuła, Krzysztof; Wiśniowski, Rafał; Kozioł, Krzysztof; Stryczek, Stanisław
rodzaj: artykuł w czasopiśmie
Abstrakt: This work presents the methodology for analyzing the impact of ground vibrations induced during the drilling of gas/oil exploration wells on the surrounding constructions, as well as on humans and the natural environment. In the primary stage, this methodology is based on measurements of ground vibrations induced by a specific type of drilling system in the so-called reference site. In the next stage, ground vibrations are estimated in similar conditions to another design site, these conditions are assumed for a given drilling system, treated as a vibration source. In both sites, special seismic and geotechnical data are collected to construct numerical models for dynamic analyses. Finally, if it is required, a protection system is proposed with respect to the drilling technology and local conditions. The methodology presented has been tested on the terrain of an active natural gas mine used as the design site, and located in the southeastern part of Poland. The reference site was placed in the terrain of a working drilling system in similar conditions in the central part of Poland. Based on the results of numerical simulations, one may verify the different locations of the drilling rig in the design site with respect to the existing industrial structure. Due to the hazard from destructive ground vibrations, a certain vibroisolation system was proposed at the design site. Based on the results of numerical simulations one could rearrange the components of the drilling system in order to provide maximum security for the surrounding structures.]]>
<![CDATA[Analysis of thermal flow in waterwall tubes of the combustion chamber depending on the fluid parameters]]> Tue, 15 Oct 2019 11:56:14 +0200 Majdak, Marek; Grądziel, Sławomir
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The article presents the method of determining the temperature distribution in waterwall tubes of the combustion chamber. To simulate the operating conditions of waterwall tubes have been selected the model with distributed parameters, which is based on the solution of equations of the energy, mass and momentum conservation laws. The purpose of the calculations is determining the enthalpy, mass-flow and pressure of the working fluid flowing inside the tubes. The balance equations have been transformed into a form in which spatial derivatives are on the left, and the right side contains time derivatives. Then the time derivatives were replaced with backward difference quotients, and the obtained system of differential equations was solved by the Runge-Kutta method. The analysis takes into account the variability of fluid parameters depending on the mass-flow at the inlet of the tube and heat flux on the surface of the tube. The analysis of fluid parameters was carried out based on operating parameters occurring in one of the Polish supercritical power plants. Then it was compared with characteristics for systems operating at increased or reduced thermal flux on the walls of the furnace or systems operating at increased or reduced mass-flow of the working fluid at the inlet to the waterwall tube. ]]>
<![CDATA[Erratum: “Monomer density profiles for polymer chains in confined geometries: Massive field theory approach” [J. Chem. Phys. 134, 024119 (2011)]]]> Tue, 15 Oct 2019 11:51:48 +0200 Usatenko, Z.
rodzaj: artykuł w czasopiśmie
Abstrakt: In the original paper, [1] there are two typographical errors. Equation (2.28) should be in the form Δf/(n_{B} k_{B}T) = 2 π R R_{x} \Theta(a/R_{x}). In accordance with this, Eq. (2.29) should be in the form ⟨ρ λ (z̃)⟩_{wp} = B z̃^{1/\nu}(1 + 2π R R_{x}\Theta(a/R_{x}). These typographical errors are absent in the final results presented in Figs. 2(a) and 2(b).]]>
<![CDATA[Kurdwanów – rozwój czy degradacja wsi w wyniku przyłączenia do Krakowa]]> Tue, 15 Oct 2019 11:45:44 +0200 Woźniczka, Magdalena
rodzaj: artykuł w czasopiśmie
Abstrakt: Artykuł ukazuje przebieg zmian, które zaszły w obrębie Kurdwanowa po jego włączeniu do Krakowa. Omówione zostały przekształcenia form architektonicznych oraz układu przestrzennego i funkcjonalnego znajdującego się w historycznych granicach Kurdwanowa, obowiązujących do zmiany granic dzielnic Krakowa w 2008 roku. Uzyskane wyniki są efektem analizy archiwalnej dokumentacji, obserwacji terenowych oraz informacji uzyskanych od mieszkańców Kurdwanowa. Wieś Kurdwanów została włączona w granice miasta w 1941 roku. Budowa osiedla na niezagospodarowanym wzgórzu powyżej ul. Cechowej została rozpoczęta na przełomie lat 70. i 80. Kolejnym przełomowym momentem było wybudowanie odcinka południowej obwodnicy Krakowa w 2003 roku. Inwestycja rozdzieliła historyczną wieś na dwie części, niszcząc walory krajobrazowe i więzi społeczne. Badania przeprowadzono, aby określić przyczyny degradacji dawnej wsi oraz dominacji terenów dotąd pustych. Wynik analizy wskazuje, że głównym czynnikiem były błędy w polityce przestrzennej miasta Krakowa. Poznanie niekorzystnych procesów zachodzących w obrębie Kurdwanowa, daje szansę na wdrożenie działań zapobiegających dalszej degradacji omawianego obszaru.]]>
<![CDATA[Radial basis functions intended to determine the upper bound of absolute dynamic error at the output of voltage-mode accelerometers]]> Tue, 15 Oct 2019 11:33:36 +0200 Tomczyk, Krzysztof; Piekarczyk, Marcin; Sokal, Grzegorz
rodzaj: artykuł w czasopiśmie
Abstrakt: In this paper, we propose using the radial basis functions (RBF) to determine the upper bound of absolute dynamic error (UAE) at the output of a voltage-mode accelerometer. Such functions can be obtained as a result of approximating the error values determined for the assumed-in-advance parameter variability associated with the mathematical model of an accelerometer. This approximation was carried out using the radial basis function neural network (RBF-NN) procedure for a given number of the radial neurons. The Monte Carlo (MC) method was also applied to determine the related error when considering the uncertainties associated with the parameters of an accelerometer mathematical model. The upper bound of absolute dynamic error can be a quality ratio for comparing the errors produced by different types of voltage-mode accelerometers that have the same operational frequency bandwidth. Determination of the RBFs was performed by applying the Python-related scientific packages, while the calculations related both to the UAE and the MC method were carried out using the MathCad program. Application of the RBFs represent a new approach for determining the UAE. These functions allow for the easy and quick determination of the value of such errors.]]>
<![CDATA[Architektura mieszkaniowa Aldo Rossiego – pomiędzy racjonalizmem a poetyką]]> Tue, 15 Oct 2019 11:29:37 +0200 Mielnik, Anna
rodzaj: artykuł w czasopiśmie
Abstrakt: Artykuł jest częścią badań autorki nad tendencjami racjonalistycznymi we współczesnej architekturze mieszkaniowej. Przedmiotem analizy są teorie urbanistyczno-architektoniczne Aldo Rossiego i ich wpływ na projektowaną przez niego architekturę mieszkaniową wielorodzinną różnych typów (kwartał zabudowy, budynek narożny, miejska willa, blok) w Berlinie i Mediolanie. Aldo Rossi, teoretyk i twórca, badał, a następnie stosował w projektowaniu metodologię, która czerpała informacje o mieście i jego architekturze z przeszłości, z historii i „zbiorowej pamięci”. Tam próbował określić uniwersalne, niezmienne formy i elementy architektoniczne. W swoich badaniach typologicznych szukał następnie połączenia abstrakcyjnego języka geometrii z funkcją (również zgłębianą historycznie), analizował teren, lokalne struktury, materiały, unikalne cechy miejsca. Autorkę interesuje, dlaczego dzieła Rossiego, charakteryzujące się niezwykłym formalizmem i bezkompromisowością, stanowiły w czasie swego powstania i nadal stanowią ważne przykłady, a nawet ikony miejskiej architektury mieszkaniowej. Tekst ma również pokazać, że „dziedzictwo teoretyczne i architektoniczne” Aldo Rossiego może być nadal źródłem inspiracji w rozwiązywaniu problemów stojących przed architekturą. Również dzisiaj twórcy, sięgając po ustalone w przeszłości formy, struktury, typy oraz materiały, mogą kontynuować poszukiwania wartości uniwersalnych w architekturze, biorąc pod uwagę współczesne warunki i potrzeby. Podjęcie tematu ma zwrócić uwagę na kwestię racjonalizmu jako ogólnej postawy w kształtowaniu miejskiej architektury mieszkaniowej, która może stanowić kompromis pomiędzy przeszłością a teraźniejszością, tradycją a nowością.]]>
<![CDATA[SCORE: Simulator for cloud optimization of resources and energy consumption]]> Tue, 15 Oct 2019 11:25:54 +0200 Fernández-Cerero, Damián; Fernández-Montes, Alejandro; Jakóbik, Agnieszka; Kołodziej, Joanna; Toro, Miguel
rodzaj: artykuł w czasopiśmie
Abstrakt: Achieving efficiency both in terms of resource utilisation and energy consumption is a complex challenge, especially in large-scale wide-purpose data centers that serve cloud-computing services. Simulation presents an appropriate solution for the development and testing of strategies that aim to improve efficiency problems before their applications in production environments. Various cloud simulators have been proposed to cover different aspects of the operation environment of cloud-computing systems. In this paper, we define the SCORE tool, which is dedicated to the simulation of energy-efficient monolithic and parallel-scheduling models and for the execution of heterogeneous, realistic and synthetic workloads. The simulator has been evaluated through empirical tests. The results of the experiments confirm that SCORE is a performant and reliable tool for testing energy-efficiency, security, and scheduling strategies in cloud-computing environments.]]>
<![CDATA[W labiryncie struktury]]> Tue, 15 Oct 2019 11:25:24 +0200 Początko, Marek
rodzaj: artykuł w czasopiśmie
Abstrakt: Logika przestrzeni mieszkaniowej zmienia się. Podobnie struktura domu, którego rola we współczesnym mieście komplikuje się. Artykuł zawiera analizę wybranych najnowszych realizacji architektonicznych będącą podstawą do rozważań na temat struktury architektury mieszkaniowej i jej zmianom. Swą skalą obejmuje budynki w gęstej zabudowie miejskiej. Zestawienie odmiennych przykładów pod względem logiki struktury i jej czytelności pozwala postawić pytania: czy zmiana formy i wewnętrznej logiki domu ma wpływ na miasta? Jaka jest rola nietypowych struktur w ich przestrzeni?]]>
<![CDATA[GAME-SCORE: Game-based energy-aware cloud scheduler and simulator for computational clouds]]> Tue, 15 Oct 2019 11:14:05 +0200 Fernández-Cerero, Damian; Jakóbik, Agnieszka; Fernández-Montes, Alejandro; Kołodziej, Joanna
rodzaj: artykuł w czasopiśmie
Abstrakt: Energy-awareness remains one of the main concerns for today's cloud computing (CC) operators. The optimisation of energy consumption in both cloud computational clusters and computing servers is usually related to scheduling problems. The definition of an optimal scheduling policy which does not negatively impact to system performance and task completion time is still challenging. In this work, we present a new simulation tool for cloud computing, GAME-SCORE, which implements a scheduling model based on the Stackelberg game. This game presents two main players: a) the scheduler and b) the energy-efficiency agent. We used the GAME-SCORE simulator to analyse the efficiency of the proposed game-based scheduling model. The obtained results show that the Stackelberg cloud scheduler performs better than static energy-optimisation strategies and can achieve a fair balance between low energy consumption and short makespan in a very short time.]]>
<![CDATA[An improved Neural Kalman Filtering Algorithm in the analysis of cyclic behaviour of concrete specimens]]> Tue, 15 Oct 2019 11:04:59 +0200 Krok, Agnieszka
rodzaj: artykuł w czasopiśmie
Abstrakt: The article is related to the results of research on Node Decoupled Extended Kalman Filtering (NDEKF) as a learning method for the training of Multilayer Perceptron (MPL). Developments of this method made by the author are presented. The application of NDEKF and MPL and other methods (pruning of MLP, Gauss Process model calibrated by Genetic Algorithm and Bayesian learning methods) are discussed on the problem of hysteresis loop simulations for tests of compressed concrete specimens subjected to cyclic loading.]]>
<![CDATA[Modelowanie a realizacja węzłów]]> Tue, 15 Oct 2019 10:57:44 +0200 Kochański, Tomasz; Kram, Dorota; Śliwa-Wieczorek, Klaudia
rodzaj: artykuł w czasopiśmie
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<![CDATA[Exploiting CloudSim in a multiformalism modeling approach for cloud based systems]]> Tue, 15 Oct 2019 10:56:19 +0200 Barbierato, Enrico; Gribaudo, Marco; Iacono, Mauro; Jakóbik, Agnieszka
rodzaj: artykuł w czasopiśmie
Abstrakt: Cloud based architectures present many challenges, ranging from poorly dimensioned hardware to lengthy wait times and resource balancing issues. Most of these problems can be mitigated by using proper performance evaluation techniques, depending on the accuracy of the model abstracting the real system. The adoption of a formalism over another to describe the considered infrastructure plays a crucial role in achieving this goal. In this sense, multiformalism proves itself to be a powerful modeling approach describing each system component according to the most suitable representation. This paper presents a novel modeling method oriented to the prediction of cloud architectures performance, suitable for joining the advantages of high level modeling abstractions and of the detail of a specialized simulator. Generalized Stochastic Petri Nets are used to describe the workload and the behavior of users and applications, while Cloudsim, a well known cloud infrastructure simulator, is adopted for the cloud part. A case study of a simplified Edge Computing application is presented to demonstrate the effectiveness of the proposed approach.]]>
<![CDATA[Advantages of suspension structures under seismic effects on the example of the water tank]]> Tue, 15 Oct 2019 10:34:40 +0200 Azizov, Taliat; Jurkowska, Nadzieja; Melnik, Oleksiy
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The paper presents the advantages of suspension buildings and structures in comparison with the traditional buildings. It has been demonstrated, that during an earthquake the strains in the support structures of such buildings and structures are significantly reduced compared to the strains in traditional cantilever buildings. The advantage of the suspension structures is shown by the example of a water tower with a tank of a capacity of 50 m3. Various schemes of the considered construction are given: the construction freely suspended on the bearing frame, the construction with the suspended foundation (prototype). These schemes are compared with the scheme of the cantilever structure. It is proved that the dynamic forces arising from the ground oscillation in the suspended structure are less than the forces in the cantilever structure. The strains depend on the frequency and amplitude of the ground vibrations. The scheme of the forces’ adjustment by means of springs (dampers) is given. It is illustrated that by changing the flexural stiffness of the bearing frame, changing the stiffness of the damper, it is possible to adjust the frequency of oscillations and forces in the suspension building or structure.]]>
<![CDATA[Mechanical and absorption properties of commercial hydrogel dressings]]> Mon, 14 Oct 2019 13:46:56 +0200 Łagan, Sylwia; Liber-Kneć, Aneta
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The aim of this work was comparison of three different structures (foam, fibrous and solid) of hydrogels through the mechanical tensile test, wettability test and the fluid absorption ability in the context of durability.]]>
<![CDATA[Polymerization shrinkage and compressive strength of microhybrid dental composite]]> Mon, 14 Oct 2019 13:42:56 +0200 Liber-Kneć, Aneta; Łagan, Sylwia
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The aim of the work was an investigation of the influence of direction of UV light irradiation on the polymerization shrinkage and compressive strength of micro hybrid dental composite. Cylinder-shaped samples were made from UV lightactivated microybrid composite Zmack comp (colour A2) produced by Zhermack. Samples were made in glass tubes with the internal diameter of 2 mm and the height of 6 mm. Three variants of irradiation directions were used: (1) from the bottom and top, (2) form the right and left side, (3) combination of variants 1 and 2.]]>
<![CDATA[Teka Grona Konserwatorów Galicyi Zachodniej. T. 6 ]]> Mon, 14 Oct 2019 12:54:17 +0200 rodzaj: opis bibliograficzny książki
Abstrakt: Tekę VI Grono c. k. Konserwatorów Galicyi Zachodniej przeznaczyło na wydawnictwo katalogów archiwów kościelnych i świeckich, zwłaszcza miejskich. Redakcyę objął prof. dr. Stanisław Kutrzeba. Ze względu na trudności, wojną wywołane w ostatecznem przygotowaniu materyału, który miał wejść do tego tomu, Grono uchwaliło na razie wydać pierwszą część Teki, już gotową od pewnego czasu, a obejmującą Katalog archiwum kościoła N. P. Maryi w Krakowie. [...]]]>
<![CDATA[Standardy techniczne pojazdów przeznaczonych do transportu osób i rzeczy]]> Mon, 14 Oct 2019 12:49:10 +0200 Ciastoń-Ciulkin, Aleksandra
rodzaj: rozdział/fragment książki
Abstrakt: Rozdział zawiera omówienie standardów technicznych pojazdów przeznaczonych do przewozu osób i rzeczy oraz warunków dopuszczenia pojazdów do ruchu. Przedstawiono również charakterystyki urządzeń rejestrujących pracę pojazdu i kierowcy. Omówiono zasady ruchu drogowego oraz regulacje dotyczące znaków drogowych zawarte w Konwencjach Wiedeńskich.]]>
<![CDATA[Automatic environmental monitoring]]> Mon, 14 Oct 2019 12:37:00 +0200 Rodziewicz, Rafał; Generowicz, Agnieszka; Laskowski, Sebastian
rodzaj: materiały konferencyjne w książce
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<![CDATA[Light pollution at Botanical Garden of the Jagiellonian University - preliminary analysis]]> Mon, 14 Oct 2019 12:34:10 +0200 Ściężor, Tomasz
rodzaj: materiały konferencyjne w książce
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<![CDATA[Protection of the night sky in historic cities]]> Mon, 14 Oct 2019 12:32:00 +0200 Siedlecki, Bogdan; Czaplicka, Anna
rodzaj: materiały konferencyjne w książce
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<![CDATA[EALPO 2019 : 1st International Conference on Environmental and Astronomical Light Pollution, 20-21 September 2019, Cracow, Poland : [book of abstracts]]]> Mon, 14 Oct 2019 12:22:35 +0200 rodzaj: materiały konferencyjne - redakcja książki
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<![CDATA[Cyclic properties of P91 steel at variable temperatures]]> Mon, 14 Oct 2019 12:20:15 +0200 Egner, W.; Sulich, P.; Egner, H.; Mroziński, S.
rodzaj: materiały konferencyjne w książce
Abstrakt: The study presents the results of low-cycle fatigue tests on P91 steel specimens, carried out under constant strain and constant stress conditions, at three temperatures and several strain and stress amplitude levels. The experimental tests are performed to recognize different aspects of a material behavior. The analysis of the experimental data reveals the influence of fatigue testing conditions on the fatigue life predictions. The constitutive description of thermomechanical low cycle fatigue behavior of P91 steel is then developed within the framework of thermodynamics of irreversible processes with internal state variables. The model is implemented into a numerical subroutine, and identified on the basis of the available experimental data.]]>
<![CDATA[MR multi disc clutches - construction, parameters and field model]]> Mon, 14 Oct 2019 11:03:28 +0200 Kluszczyński, Krzysztof; Pilch, Zbigniew
rodzaj: materiały konferencyjne w książce
Abstrakt: The paper describes construction and presents the finite element model of a multi-disc clutch employing MR fluid. The computer program is elaborated in Agros2D and scripts are written in PythonLAB language. Attention is focused on spatial distribution of magnetic flux density in the magnetic circuit. The authors proposed the concept of “average magnetic path”. This enabled us to determine: the most saturated point of the ferromagnetic core and to analyze the distribution of the magnetic field in the movement region, cover yoke, and cylinder yoke.]]>
<![CDATA[Galactic magnetic fields in the context of dark matter. Influence on the rotation curves of spiral galaxies]]> Mon, 14 Oct 2019 09:48:41 +0200 Jałocha, Joanna; Bratek, Łukasz
rodzaj: materiały konferencyjne w książce
Abstrakt: The large-scale magnetic fields are of paramount importance for the cosmic ray astrophysics. Patterns in the motion of interstellar medium may provide some constraints on the structure of galactic magnetic fields, especially in our Galaxy. It seems that magnetic fields cannot be ignored in attempts to fully address the problem of the rotation of spiral galaxies. The interstellar gas is ionized to a degree sufficient for the magnetic field to freeze-in the gas, so that the resulting magnetic tension influences its motion, modifying the predictions of purely gravitational models of galactic rotation. The inclusion of magnetic fields has implications for the predicted local mass-to-light ratio and so might help to reduce the missing mass problem.]]>
<![CDATA[The approach to applications integration for World Data Center interdisciplinary scientific investigations]]> Mon, 14 Oct 2019 09:40:05 +0200 Nowakowski, Grzegorz; Telenyk, Sergii; Yefremov, Kostiantyn; Khmeliuk, Volodymyr
rodzaj: materiały konferencyjne w książce
Abstrakt: The approach to applications integration for World Data Center (WDC) interdisciplinary scientific investigations is developed in the article. The integration is based on mathematical logic and artificial intelligence. Key elements of the approach - a multilevel system architecture, formal logical system, implementation - are based on intelligent agents interaction. The formal logical system is proposed. The inference method and mechanism of solution tree recovery are elaborated. The implementation of application integration for interdisciplinary scientific research is based on a stack of modern protocols, enabling communication of business processes over the transport layer of the OSI model. Application integration is also based on coordinated models of business processes, for which an integrated set of business applications are designed and realized.]]>
<![CDATA[Comparison of propagative instabilities in shear and tension for viscoplastic and gradient-enhanced model]]> Mon, 14 Oct 2019 09:33:12 +0200 Mucha, Marzena; Wcisło, Balbina; Pamin, Jerzy
rodzaj: materiały konferencyjne w książce
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<![CDATA[Badanie efektów solwatochromowych dla wybranych sensorów fluorescencyjnych]]> Mon, 14 Oct 2019 07:55:20 +0200 Topa, Monika; Galek, Mariusz; Petko, Filip; Machowski, Kamil; Ortyl, Joanna
rodzaj: materiały konferencyjne w książce
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<![CDATA[Spektroskopowe badania nowych kompleksów samaru(III)]]> Mon, 14 Oct 2019 07:50:53 +0200 Topa, Monika; Chachaj-Brekiesz, Anna; Ortyl, Joanna
rodzaj: materiały konferencyjne w książce
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<![CDATA[Monitorowanie kinetyki szybkich procesów fotopolimeryzacji rodnikowej dla materiałów powłokowych przy zastosowaniu spektroskopii fluorescencyjnej]]> Mon, 14 Oct 2019 07:45:06 +0200 Pilch, Maciej; Galek, Mariusz; Petko, Filip; Machowski, Kamil; Ortyl, Joanna
rodzaj: materiały konferencyjne w książce
Abstrakt: Obecnie techniki fotochemiczne wykorzystujące zjawisko fluorescencji nabierają coraz większego znaczenia w różnych dziedzinach nauki, począwszy od biologii molekularnej a skończywszy na chemii polimerów. Współczesne zastosowanie fluorescencji w chemii polimerów dotyczy zarówno procesów fotopolimeryzacji, czyli polimeryzacji inicjowanej światłem, jak również metod kontroli procesów polimeryzacji oraz charakteryzacji otrzymywanych tworzyw sztucznych. Spośród różnych technik fluorescencyjnych w zakresie chemii polimerów na szczególną uwagę zasługuje metoda Fluorescent Probe Technology. Jest to nowa i mająca duży potencjał technika pozwalająca na monitorowanie kinetyki procesów polimeryzacji w trybie on-line. Podczas badania grupy związków o potencjalnym zastosowaniu do roli luminescencyjnych sensorów molekularnych posługiwano się standardowymi technikami spektroskopowymi oraz elektrochemicznymi takimi jak pomiary widm absorpcyjnych, pomiary widm fluorescencji oraz woltamperometria cykliczna. Dodatkowo w celu sprawdzenia przydatności tych sensorów do monitorowania kinetyki procesów polimeryzacji w trybie on-line zastosowano wspomnianą już wcześniej technologię FPT.]]>
<![CDATA[Control of thermal comfort of rooms in an office building in October 2018]]> Mon, 14 Oct 2019 07:36:12 +0200 Sikora, Konrad; Furtak, Marcin
rodzaj: materiały konferencyjne w książce
Abstrakt: The ecological aspect of an office building can be observed mainly in the microclimate of its rooms. In the recent years, there is a growing interest in sustainable construction, especially in terms of the amount of fuel needed to heat buildings. This predominantly concerns commercial office buildings in which the achievement of an adequate standard and inner climate of rooms is often the most important criterion for the customer renting the premises. The costs borne by potential tenants, the owners of the buildings and the society as a whole, caused by adverse inner environment conditions in office buildings are often much higher than the costs of the use of energy in the building. A good quality of inner environment (including stable temperature and humidity) has a significant impact on the efficiency of work and decreases the number of sick leaves of employees. The above aspects are very important and should be considered already at the stage of design and construction of office buildings and later - during the execution of the investment-construction process. The paper shall present the results of research conducted in the innovative MLBE (Malopolskie Laboratorium Budownictwa Energooszczednego) building - the so called smart building, regarding the inner microclimate of office and laboratory rooms, in view of the external environment conditions in October 2018, measured by an automatic weather station located at the northern side of the building.]]>