Nowe zasoby w Repozytorium PK http://suw.biblos.pk.edu.pl/ Biblioteka Politechniki Krakowskiej lipinska@biblos.pk.edu.pl 60 <![CDATA[Architecture 2050]]> Thu, 21 Jan 2021 15:17:28 +0100 rodzaj: materiały konferencyjne - redakcja książki
Abstrakt: Chile, Lebanon and Poland are countries that are included in the EMMAT research project that focuses on e-mobility and sustainable materials and technologies in architecture. It is funded by the Polish National Agency for Academic Exchange (Narodowa Agencja Wymiany Akademickiej, NAWA). The programme does not strictly apply to architecture and has an interdisciplinary character, associating 37 universities from all over the world. The Cracow University of Technology coordinates the entire programme. In the field of architecture, the choice of project partners was the result of previously initiated cooperation and bilateral agreements between the Faculty of Architecture of the Cracow University of Technology and the Lebanese American University in Beirut, as well as between the Faculty of Architecture of the Cracow University of Technology and the University of Chile’s Faculty of Architecture and Urbanism. The programme was comprised of study tours of Chile, Lebanon and Poland, which included discussions, seminars and conferences. Thus, it was possible to confront the architectural ideas and experiences of scholars from three differen continents: Asia, South America and Europe. The texts included in this book were presented during a conference and a series of seminars that took place in Cracow in November 2019 and January 2020, as well as during a seminar in Lebanon that took place in March 2019.]]>
<![CDATA[Thermomodernization of a residential building to nZEB level]]> Thu, 21 Jan 2021 14:00:51 +0100 Kozak-Jagieła, Ewa; Kusak, Grzegorz; Klich, Agnieszka; Mojkowska-Gawełczyk, Małgorzata
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Directive (EU) 2018/844 of the European Parliament and of the Council of 30 May 2018 amending Directive 2010/31/EU on the energy performance of buildings and Directive 2012/27/EU on energy efficiency introduces a zero-energy building standard, for which the energy balance per year is zero, i.e. the amount of energy obtained from renewable sources is equal to the annual demand. Each Member State shall establish a long-term renovation strategy to support the renovation of the national stock of residential and non-residential buildings, both public and private, into a highly energy efficient and decarbonised building stock by 2050, facilitating the cost-effective transformation of existing buildings into nearly zero-energy buildings. To achieve energy consumption at an appropriately low level in an existing building, you must adjust the heat transfer coefficients of the building envelope and the demand for primary energy to the requirements of the Technical Conditions for year 2021. Renewable energy sources, primarily from the sun, will also play a key role. A computational example of a single-family building shows which partitions are best modernized, what thickness of thermal insulation materials should be used to properly reduce heat transfer coefficients, and which installation systems to use to reduce the potential energy index (EP). It is also depicted as to how much the demand for usable energy in the building will decrease. This article aims to show residents of single-family buildings what steps should be taken to reduce energy consumption and thus - operating costs in an existing building to a minimum.]]>
<![CDATA[The use of photovoltaic conversion in innovative solutions]]> Thu, 21 Jan 2021 13:52:40 +0100 Kozak-Jagieła, Ewa; Klich, Agnieszka; Mojkowska-Gawełczyk, Małgorzata
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The year 2021 is inevitably coming, in which all newly built buildings should meet the standard of almost zero-energy all newly build constructions (nZEB). This means that buildings should have almost zero or low energy consumption. The energy demand should be covered to a very high degree from renewable sources, including renewable energy produced on-site or nearby. One of the renewable that can be used is solar energy, which for the 9th time in a row has achieved the largest share (42.5%) of new investments utilising renewable energy sources. Currently, solar energy is most often used by photovoltaic cells, which converts it into electricity. Over the past 15 years, the accumulated annual growth rate of photovoltaic production has been over 40%, which means that the photovoltaic industry is the fastest growing in the world. The annual capacity of new solar installations installed has increased from 29.5 GWp in 2012 to 107 GWp in 2018. The development of solar technology is huge. Previously known technologies are improving and refined, which stands for that the efficiency of electricity conversion is increasing. New innovative technologies using photovoltaic cells are also emerging. These include cells dedicated to the building facade BIPV, used in louvres of curtain blinds, filling mullion-transom facades, roof skylights or balustrades. NanoPV windows are a new product appearing on the market. This is a product that uses innovative material - quantum dots, i.e. small semiconductors with the sizes of several or several dozens of nanometers, having the ability to absorb and emit electromagnetic radiation. In this work, the authors present the development of photovoltaic technology and the most interesting solutions according to the authors regarding the use of solar technologies.]]>
<![CDATA[The comparison of the current and industry 4.0 automation and protection standards]]> Thu, 21 Jan 2021 12:26:21 +0100 Sołtysek, Łukasz; Szczepanik, Jerzy
rodzaj: materiały konferencyjne w książce
Abstrakt: The article contains the analysis of the advantages or new “Industry 4.0” control and power supply protection system over classic de-centralized systems. Particular attention was paid to the development of communication systems and the integration of control and protection systems. The development of modern methods of communication and diagnostics of industrial facilities include unambiguous identification and location of failures in real time, collection of historical data and current operational states. This was not possible when the transmission of data took place over a wire-based communication. The reliability of the proposed solutions 4.0 include not only redundance (as it was in classic systems), but also the ability of the modification of system structure was also analyzed. Not only by reduction but also by changing the system structure, what makes the design, commissioning and development of intelligent factories and products much easier and flexible.]]>
<![CDATA[Application of the Bayesian networks in construction engineering]]> Thu, 21 Jan 2021 10:59:58 +0100 Leśniak, Agnieszka ; Janowiec, Filip
rodzaj: artykuł w czasopiśmie
Abstrakt: Currently, significant development of methods supporting decision making under uncertainty conditions is observed. One of such methods includes Bayesian networks used in many fields of economy and science. The paper presents the use of the Bayesian network method in civil engineering problems with particular emphasis on construction engineering projects. In addition to the existing examples of the use of the method cited, the authors’ method for the risk estimation of additional works is presented]]>
<![CDATA[Action planning logic in intelligent IT systems using the example of bots]]> Thu, 21 Jan 2021 10:12:09 +0100 Telenyk, Sergii; Nowakowski, Grzegorz; Zharikov, Eduard; Vovk, Yevhenii; Tokmenko, Olena P.
rodzaj: materiały konferencyjne w książce
Abstrakt: The logic of action planning adopted in the adaptive technology Smart Plus is considered. The key features of the approach adopted here include distinguishing between two formalisms (action planning and organization of interaction); a two-level action planning formalism; sensory data; the possibility of dynamic type generation; and the assumption of a negative result from the actions performed. The proposed formal action planning system allows the user to define the process of choosing a behaviour as an action planning process. In the framework of the formal action planning system proposed in this paper, the concept of goal attainability is formalized in terms of plans, and a foundation is created for effective inference procedures. A general approach to the automated creation of bots based on logical and linguistic models has been proposed. A general scheme of the web-based system using the chatbot was developed. One of the key features of this solution is the automation of the chain of activities, the implementation of which leads to the fulfilment of the user's query.]]>
<![CDATA[The application of CVP analysis in companies from the taxi industry based on simulation results : the empirical evidence from Poland]]> Thu, 21 Jan 2021 10:08:26 +0100 Bauer, Kinga; Bauer, Marek
rodzaj: materiały konferencyjne w książce
Abstrakt: The specificity of the work of taxi companies operating at airports has been presented in this paper. Attention was drawn to the importance of conducting the CVP analysis, which is aimed at increasing the efficiency of operations of this type of enterprises. In order to make this possible, it is necessary to precisely define in advance and under real conditions the scope of services provided, as well as various scenarios of the transport offer. It is, therefore, reasonable to use simulation methods that enable quick and reliable comparison of the potential effects of implementing individual solutions. The author's own simulation model is universal, it can be used to analyze the taxi service of any airport serving the city to which it belongs. The model makes it possible to determine the percentage of profitable trips (i.e. with a client) and to determine the duration of individual service processes, such as acquiring a client, the trip itself or operating activities when alighting and boarding. At the same time, the variability of duration of the above service processes has been taken into account, including the variability of the travel time resulting from changing traffic conditions. It is the stochastic nature of the model that enables a significant increase in the quality of CVP analyses. An example of using the model to determine the optimal division of the day into work shifts as one of many of its applications has been presented in this paper.]]>
<![CDATA[Green infrastructure—countering ecosystem fragmentation: case study of a municipality in the Carpathian Foothills]]> Thu, 21 Jan 2021 09:55:14 +0100 Blazy, Rafał ; Hrehorowicz-Gaber, Hanna; Hrehorowicz-Nowak, Alicja
rodzaj: artykuł w czasopiśmie
Abstrakt: This paper discusses green infrastructure, which can be considered a useful tool in the process of ensuring the sustainable development of rural structures in the polish Carpathian region. It allows for achieving a better quality of the environment of human life and healthy wildlife linkages. The element that supports defining information about the existing state of green infrastructure and its resources is the green infrastructure fragmentation coefficient based on edge effect calculations, which is the relation between the edge of the patch (circumference) to its surface area. With the use of model analysis of green infrastructure, it is possible to implement the provisions of the Carpathian Convention and coordinate planning documents that facilitate the sustainable development of spatial structures. Our study on the state of green infrastructure in rural areas of the Polish Carpathian Mountains is a source of knowledge about the quality of this area, its natural environment and fragmentation. Determining the territory’s green infrastructure fragmentation coefficient provides an opportunity for higher-precision studies and the detection of threats and integration of GI fragments and addressing proper solutions in conflict areas.]]>
<![CDATA[Investigation of the effective use of photovoltaic modules in architecture]]> Wed, 20 Jan 2021 18:47:29 +0100 Celadyn, Wacław; Filipek, Paweł
rodzaj: rozdział/fragment książki
Abstrakt: The application of photovoltaic systems is becoming a dominant feature in contemporary buildings. They allow for the achievement of zero-energy constructions. However, the principles of this strategy are not yet sufficiently known among architects. The purpose of this study is to enhance their expertise, which cannot be widened due to the shortage of targeted publications. The issue presentation was structured in a way that follows the typical design stages, beginning with large-scale urban problems up to the scale of building forms and components. Different types of photovoltaic (PV) systems are considered, based on their efficiency, relations with building fabrics, potential for thermally protecting buildings and their impact on esthetic values. The focus was mainly on the most popular PV modules. The application of these systems requires in-depth analyses which should be carried out by designers at the initial stage and through the next stages of the design. A method to analyze zoning plan regulations and site planning in view of PV modules’ efficiency is novel. This paper also contains considerations with regard to some other untypical applications of these systems. There is need for changing attitudes in architects and investors regarding the issue of promoting the systems through further elucidations.]]>
<![CDATA[Suitability of eye tracking in assessing the visual perception of architecture – a case study concerning selected projects located in Cologne]]> Wed, 20 Jan 2021 18:22:16 +0100 Lisińska-Kuśnierz, Małgorzata; Krupa, Michał
rodzaj: rozdział/fragment książki
Abstrakt: This article discusses the visual perception of selected buildings located in the historic centre of Cologne, Germany, that have been designed by outstanding architects. It presents eye-tracking research, both from a theoretical perspective and that of its application potential in, among other fields, psychology, management, architecture and urban planning. It also presents an experiment which was performed to evaluate the suitability of eye tracking in the assessment of the visual perception of architecture and its surroundings, utilising the case study method and members of Generation Z as the subject population. Analysis of the experiment’s results enabled the authors to formulate commentary on findings concerning typically observed attractors and distractors in the perception of architecture and its surroundings depending on context-specific conditions. The study provided evidence of the suitability of eye tracking in the assessment of the visual perception of works of architecture and indicated the possibility of continuing research concerning the assessment and shaping of the state of awareness and knowledge of architecture and urban planning, which can significantly affect public participation in urban governance.]]>
<![CDATA[On the search of models for early cost estimates of bridges: an SVM-based approach]]> Wed, 20 Jan 2021 12:55:17 +0100 Juszczyk, Michał
rodzaj: rozdział/fragment książki
Abstrakt: The completion of a bridge construction project within budget is one of the project’s key factors of success. This prerequisite is more likely to be achieved if the cost estimates, especially those provided in the early stage of a project, are realistic and close to the actual costs. The paper presents the research results on the development of a cost prediction model based on machine learning, namely the support vector machines (SVM) method, for which the input represents basic information and parameters of bridges, available in the early stage of projects. Several SVM-based regression models were investigated with the use of data collected for a number of bridge construction projects completed in Poland. Having finished the machine learning and testing processes, five of the models, of satisfying knowledge generalization ability and comparable performance, were preselected. The final selection of the best model was based on the comparison and analysis ability to predict bridge construction costs with accuracy appropriate for the early stage of projects. The general testing metrics of the finally selected model, named BCCPMSVR2, were as follows: root mean square error: 1.111; correlation coefficient of real-life bridge construction costs and costs predicted by the model: 0.980; and mean absolute percentage error: 10.94%. The research resulted in the development and introduction of an original model capable of providing early estimates of bridge construction costs with satisfactory accuracy.]]>
<![CDATA[A SWOT analysis of the use of BIM technology in the Polish construction industry]]> Wed, 20 Jan 2021 12:08:52 +0100 Zima, Krzysztof; Plebankiewicz, Edyta; Wieczorek, Damian
rodzaj: rozdział/fragment książki
Abstrakt: The present paper presents a SWOT analysis, the aim of which is to evaluate the strategic implementation of BIM technology in the construction industry in Poland. The authors created a SWOT matrix presenting strengths, weaknesses, opportunities, and risks associated with the use of BIM. Using literature analyses, own experience, and market reports, all elements of the SWOT matrix are described in detail. Basic indicators characterizing the strategic position of BIM on the Polish construction market are calculated. Finally, the matrix of strategic tasks and actions that should be applied in order to promote and develop BIM in Poland are defined.]]>
<![CDATA[Selected examples of historical cartography]]> Wed, 20 Jan 2021 10:26:45 +0100 Żaba, Tadeusz ; Piech, Izabela
rodzaj: artykuł w czasopiśmie
Abstrakt: In World War II, the Battle of Monte Cassino (also called the Battle of Rome) was a breakthrough moment of the Italian campaign. The Battle of Monte Cassino, which was remarkably vicious and ruthless, lasted nearly five months. During the entire Italian campaign, which ran from 3 September 1943 to 2 May 1945, the Allies lost nearly 312,000 soldiers and Germans suffered about 435,000 killed and injured, i.e. an average of 1,233 people per day for both sides. The most fierce fights took place on the Gustav Line: Germans, Italians, Americans, French, British, Indians, New Zealanders, Poles, Canadians and South Africans lost about 200,000 soldiers within 129 days. The 2nd Polish Corps alone had 924 dead, 2930 injured and 345 missing. During the recognition of the site and the preparation of the assaults, soldiers of the 12th Geographical Company of the 2nd Polish Corps drew, alongside maps, many perspective sketches of hills and structures from several observation posts. The authors attempted to analyse selected sketches, in terms of their geometric parameters and compatibility with a map made in 1944, based on aerial photographs. Some of these sketches are not perspective drawings but panoramic (mapped on cylindrical or spherical surface), with specified angular graduation and distances. Probably, they were to be used for artillery fire – which is proven by their precision. The art of the terrain’s details is also noteworthy. On the other hand, photogrammetric observations, unlike geodesic ones, are not made directly on the measured object, but indirectly on properly taken photographs. They are called measuring photos or photograms. The basic requirement for measuring photos is their fidelity with a central projection (which, in view of the imperfections of image extraction techniques, is only its closest mathematical model). After taking pictures, the actual dimensions and shape of the area or object recorded in the pictures are determined by awareness of the conditions under which these photos were taken (shooting distance and camera type). For these reasons, photogrammetric methods have been used in archaeology, architecture and preservation of monuments, astronomy, ballistics, construction, geology, mining, hydrology, forensics, forestry, medicine, automotive and shipbuilding industries, and especially in surveying and cartography.]]>
<![CDATA[Data classification based on photogrammetry]]> Wed, 20 Jan 2021 09:00:50 +0100 Piech, Izabela ; Żaba, Tadeusz ; Jankowska, Aleksandra
rodzaj: artykuł w czasopiśmie
Abstrakt: The aim of the paper was to classify data from aerial laser scanning and CIR digital images, which were orientated, connected and aligned by the Agisoft Photoscan software. Then, in order to distinguish the ground a point cloud was generated. This was to create a correct terrain mesh and, in consequence, an orthophotomap. The next stage is to develop a new point cloud using ArcGIS. The land cover from the images was combined with the ground mapped by LiDAR. New heights were calculated relative to the ground surface height 0. The point cloud was converted into a raster form, providing a normalized Digital Surface Model (nDSM). It was the first element of the output composition, which also consisted of the NIR and RED channels, acquired from the cloud point generated in Agisoft. The colour composition obtained in such way was subjected to four object-oriented and pixel-oriented classification methods: I – ISO Cluster, II – Maximum Likelihood, III – Random Trees, IV – Support Vector Machine. Object grouping is possible due to information stored in the display content. This technique is prompted by human ability of image interpretation. It draws attention to more variables, so effects similar to human perception of reality are possible to achieve. The unsupervised method is based on a process of automatic search for image fragments, which allows assigning them to individual categories by a statistical analysis algorithm. In turn, supervised method uses “training datasets”, which are used to “teach” the program assigning individual or grouped pixels to classes [Benz UC et al., 2004]. The area studied for land development was the Lutowiska municipality, in the Podkarpackie Voivodeship, Bieszczady County. As a result of the classification, 11 classes of terrain features were distinguished: class 0 – road infrastructure, class 1 – roads, class 2 – buildings, class 3 – waters, class 4 – meadows, class 5 – arable lands, class 6 – pastures, class 7 – high vegetation, class 8 – medium vegetation, class 9 – low vegetation, class 10 – quarry. The area of research covers an area of about 28 km2 . Aerial images were made in 2015. Field vision and photopoint measurement was carried out in May 2018.]]>
<![CDATA[FEM simulations of bond behaviour between concrete and seven-wire prestressing strand]]> Wed, 20 Jan 2021 08:56:29 +0100 Dyba, Marcin
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The article deals with the subject related to numerical tests of the concrete bond to seven-wire strands. Nonlinear contact concrete-steel calculations with using Finite Element Method (FEM) is applicable for concrete bond to reinforcing steel analyses. At the moment, the analyzes are the subject of independent research projects. The research using several scientific and commercial computing systems allows us to look deeper into the sample and obtain information about cracks development, stresses, and internal deformations. Such analyzes are impossible when tests only experimentally. The concrete-steel behaviour of materials can be modeled with a bond-slip mechanism where the relative slip of reinforcement and concrete is phenomenologically described. The behaviour of the slip zone is then mapped with a zero thickness interface (contact) element. The constitutive laws of bond-slip adhesion are based mainly on the theory of total deformation, which expresses the pulling force as a function of total relative displacement. The correct construction of the bond model requires consideration of physical phenomena occurring not only at the interface of the materials but also inside within each of them. When designing numerical research, it is necessary to keep in mind the limits in computing memory of computers. Performing static calculations for complex numerical models containing a number of geometric, material and contact nonlinearities may prove to be too time-consuming on a PC. For this reason, it is now reasonable to construct approximate, simplified models. FEM models with a strand modeled as a solid bar (with a sidewall accurate to the real one) made it possible to observe and research, destructive mechanisms identified in experimental pull-out tests.]]>
<![CDATA[Primary prevention of new pandemic and biomimetic-based adaptation to situation connected with COVID-19 pandemic]]> Wed, 20 Jan 2021 07:40:08 +0100 Dobrowolski, Jan W.; Wolkowski, Zbigniew W.; Zaba, Tadeusz
rodzaj: artykuł w czasopiśmie
Abstrakt: Acceleration of worldwide infection with mutant of coronavirus SARS CoV-19 require new paradigmatic of human activity based on negative feed-back system following basic mechanism of Homeostasis of all living organisms and ecosystems. Condition of effi cient primary prevention is better integration of cooperation of interdisciplinary teams of experts, knowledge-based society and decision-makers on local scale with working global network focused on common action for effi cient protection against contamination of the Human environment with mutagens for reduction risk of incidence new mutants [Ex: Coronaviruses and new pandemics]. Key factor for primary prevention is reduction at the sources emission of immune suppressors, carcinogens and teratogens. Effi cient prevention is depended on without delay worldwide introduction of complementary good practice in innovative environmental biotechnology integrated with ecological engineering and circular bioeconomy-driven sustainable development adopted to different kind of regions. Let us recommend heuristic approach, better fi nancial support of transdisciplinary innovative basic and researchdeveloping studies, improvement application of new IT tools for speed dissemination of scientifi c and technical progress, elimination of bureaucratic barriers and progress in distance problemsolving training and lifelong learning focused on sustainable, knowledge-based society selecting decision-makers with proper imagination and responsibility. Introduction on wider scale innovative biotechnologies [Ex: Recommended by our team modern environmental ecological engineering integrated with renewable sources of energy, laser biotechnology for better adaptation to climate change, aquaculture, apiculture etc.] focused on better prevention against contamination of the air, water and food; would be benefi cial for environmental health. It would be also useful for creation in the near future many green jobs all over the world and for reduction risk of unemployment and hunger. International action for greening cities adopted to climate change could be supported by introduction of proposed new generation of eco-buildings and green habitats. The most important eco-innovation would be designing and construction underground centres integrating innovative biotechnologies for waster, wastes management to biogas; useful for also underground greenhouses for wide scale hydroponic production pollutants-free vegetables, mushrooms, supported by laser biotechnology, apiculture and aquaculture. Such life-supporting system would be following ecosystems structure and function as new contribution to circular bioeconomy, especially useful for big cities. In the case of new epidemic, self-supporting in water and food green-habitats; could be more effi cient in protection inhabitants against infectors. Taking into consideration synergistic effects of chemical, physical, biological pollutants of the human environment as well as impact of immune suppressors decreasing resistance of humans to infections and carcinogenic effects; is necessary for proper evaluation of existing health hazard as well as for prognostic study and effi cient primary prevention against risk of new pandemics.]]>
<![CDATA[Descriptive geometry in the time of COVID-19: preliminary assessment of distance education during pandemic social isolation]]> Wed, 20 Jan 2021 07:36:41 +0100 Wojtowicz, Agnieszka; Wojtowicz, Barbara; Kopeć, Krzysztof
rodzaj: artykuł w czasopiśmie
Abstrakt: The pandemic forced a change in the teaching of descriptive geometry, a basic subject of many engineering fields. To conduct classes during COVID-19, the following resources were used: the ELF platform, MS Teams, SketchUp, AutoCAD, email. It was decided to prepare the electronic textbook along with geometric problems to be solved, supplemented by on-line consultations with students. Despite difficulties (technological, psychological), the results obtained by students during the pandemic were very good. Although the average grade during distance learning was higher than in the case of traditional education, students reported a clear need for direct contact with the teacher.]]>
<![CDATA[Nowe technologie w badaniach zabytków architektury. Analiza parametryczno-algorytmiczna gotyckiego sklepienia w Szydłowcu]]> Tue, 19 Jan 2021 12:58:23 +0100 Kulig, Anna; Filipowski, Szymon; Wójtowicz, Maciej
rodzaj: artykuł w czasopiśmie
Abstrakt: Przedmiotem opracowania jest gotyckie sklepienie w prezbiterium kościoła w Szydłowcu. Powiązany z nim jest oryginalny dużych rozmiarów ryt, zachowany na ścianie nawy głównej, pełniący podczas realizacji świątyni funkcję swoistego "projektu wykonawczego". To unikat w skali europejskiej i jedyny taki zespół śladów dawnego rzemiosła budowlanego. Ryt, odkryty po pięciu wiekach, wzbudził duże zainteresowanie badaczy wskazujących nieliczne przypadki podobnych rysunków, zachowanych jednak fragmentarycznie na posadzkach, tarasach, ścianach czy sklepieniach. Na przestrzeni lat powstały hipotezy rekonstrukcyjne dotyczące faz rysunkowych i realizacyjnych tego dzieła w Szydłowcu. Autorów artykułu zainteresowały zależności między projektem a zrealizowanym kształtem sklepienia, czyli zagadnienie, w jakim stopniu odwzorowano w naturalnej skali koncepcje zapisane na płaskim rysunku. Dokonano analizy porównawczej przebiegu żeber ze stanem istniejącym wymurowanych segmentów kamiennych łuków żebrowych. Podczas prac zastosowano nowoczesny sprzęt pomiarowy i zaawansowane oprogramowanie. Celem badań było określenie i sklasyfikowanie wzajemnych podobieństw i różnic.]]>
<![CDATA[Dwa oblicza Matery. Problematyka ochrony dziedzictwa kulturowego Matery w procesie rewitalizacji antycznego miasta]]> Tue, 19 Jan 2021 12:57:47 +0100 Stachurska, Marta
rodzaj: artykuł w czasopiśmie
Abstrakt: Artykuł porusza problematykę związaną z ochroną dziedzictwa kulturowego w postępującym procesie silnej rewitalizacji miasta. Rozważania przeprowadzono na przykładzie Matery, włoskiej miejscowości, Europejskiej Stolicy Kultury roku 2019, wpisanej na Listę Światowego Dziedzictwa UNESCO. Fenomen urbanistyczno-architektoniczny Matery stanowi przykład idealnie zachowanej antycznej struktury miasta, zarówno w kontekście wartości architektonicznych i urbanistycznych, jak i kulturowych. W artykule wskazano najistotniejsze czynniki wpływające na obrany kierunek działań rewitalizacyjnych, takie jak: historia miasta, położenie geograficzne wraz z analizą podłoża geologicznego miejscowości, a także relacje społeczne zachodzące między materańczykami i ich stosunek do miejsca, które zamieszkują. W analizie procesu odbudowy zwrócono uwagę na dwa główne nurty wyznaczające jego kształt, tj. zasadę zrównoważonego projektowania oraz silną partycypację lokalnej społeczności.]]>
<![CDATA[Zadania i wyzwania stojące przed samorządem doktorantów w świetle przepisów Ustawy Prawo o szkolnictwie wyższym i nauce]]> Tue, 19 Jan 2021 11:44:29 +0100 Żyra, Agnieszka; Wójcik, Ziemowit
rodzaj: rozdział/fragment książki
]]>
<![CDATA[Public buildings of north Chile's desert architecture]]> Tue, 19 Jan 2021 11:24:16 +0100 Butelski, Kazimierz
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: This article discusses public buildings located in northern Chile. The Atacama Desert provides many examples of relationships between architecture and the natural and cultural landscape. From Antofagasta to San Pedro di Atacama, we can encounter many examples of such buildings, such as museums, astronomical observatories and hotels, as well as buildings housing tourist-oriented services. We can also experience large-scale changes to the landscape associated with open-cast copper mining. One example of such a landscape is that of the Sierra Gorda mine jointly owned by Polish and Japanese companies. This paper explores the emergence of new architectural forms built in the desert and using desert materials.]]>
<![CDATA[Modern wooden construction system comparison]]> Tue, 19 Jan 2021 11:15:12 +0100 Klich, Agnieszka; Kram, Dorota
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Wood-based construction is a rapidly growing branch of construction in the world, it is slightly worse on the Polish field. In the era of care for the environment, it is important that newly constructed building objects, including buildings, not only use as little energy as possible, but are also made of materials received as ecological. Wood-based construction combines both of these aspects. There are, however, two other market aspects: price and availability of materials and technological solutions. Wooden buildings are more environmentally and human friendly than other material solutions, and with proper insulation, finishing and well-chosen installation systems, they can also be tempted to become a zero-energy building, i.e. one whose energy balance is zero per year. Among the architectural design offers today you can find a large number of residential or public building designs (low or large volume) with a wood-based structure, both in terms of bar solutions (generally seen through the prism of skeletal objects), as well as massive structures (today mainly seen through the prism plate objects). Each of them has different design assumptions, but in principle the goal is common. The right kind of construction, insulation and finishing materials should be chosen for each. For structural elements, various types of protection should be taken, e.g. in the field of fire safety or against technical wood pests, etc. In the field of insulation, analyses of thermal issues, waterproofing and wind protection are undertaken. The choice of finishing materials should also take into account solutions that are the least burdening the environment and minimize energy losses, among others by avoiding possible thermal bridges. This article attempts to present the topic in a synthetic way, outlining global trends and possibilities of the Polish wood-based construction market. The calculation example illustrates the heat balance and environmental loads of a single-family wooden building with thermal insulation selected so that the building envelope meets the current requirements given in the Technical Conditions.]]>
<![CDATA[Obłędne Ogrody : idea krajobrazu terapeutycznego w kompozycji zespołów szpitali psychiatrycznych XIX i początku XX wieku]]> Tue, 19 Jan 2021 09:49:15 +0100 Staniewska, Anna
rodzaj: książka
Abstrakt: Historyczne szpitale psychiatryczne to instytucje, których powstanie wynikało z przemian społecznych i kulturalnych, które doprowadziły do narodzin psychiatrii jako odrębnej specjalizacji medycyny. Proces ten podlegający ewolucji, ale ustabilizowany u schyłku XIX wieku, zakładał model opieki i leczenia osób z zaburzeniami psychicznymi w zamkniętym środowisku specjalnych zakładów. Ówcześni psychiatrzy byli zwolennikami tezy, że forma i kształt obiektów, w których prowadzi się leczenie ma wpływ na zdrowienie pacjentów i powinna być przedmiotem szczególnej troski. Szpital ten zatem wiązał się ze specyficznym typem otaczającego go krajobrazu kulturowego. Dopiero rozpoczęte w latach 70tych reformy doprowadziły w niektórych krajach do ich likwidacji, włącznie z niekiedy całkowitą destrukcją ich substancji architektonicznej i krajobrazowej. Jednak w niektórych krajach, mimo zmian w systemie leczenia psychiatrycznego, liczne zespoły dawnych szpitali psychiatrycznych zachowały się do naszych czasów i nadal pełnią funkcje lecznicze. Zespoły te o niejednokrotnie dobrze zachowanym krajobrazie i architekturze stały się inspiracją do podjęcia problematyki będącej przedmiotem niniejszej pracy. Koncentruje się ona na genezie i ewolucji oraz interdyscyplinarnych korzeniach kształtowania krajobrazu jako jednego ze środków wspomagających leczenie chorych psychicznie w zakładach od początku XIX do początku XX stulecia. Mimo bogatej literatury w zakresie historii psychiatrii oraz licznych publikacji na temat historii szpitali psychiatrycznych w różnych krajach, na gruncie polskim jak dotąd nie powstało żadne zwarte przekrojowe opracowanie dotyczące problematyki krajobrazowej tych założeń. Niniejsza praca wypełnia tę lukę. Pracę otwiera przegląd stanu badań na temat związków historii psychiatrii i kształtowania krajobrazu i przestrzeni historycznych szpitali psychiatrycznych. Przytoczono w nim najważniejsze polskie publikacje i odniesiono się do bogatej literatury w języku angielskim, niemieckim i francuskim. Następnie skupiono się na obrazie szpitala idealnego, jaki wyłania się z pism programowych lekarzy psychiatrów od początku XIX wieku. Szczególną uwagę poświęcono zagadnieniom kształtowania krajobrazu i uwagom na temat formy i użytkowania ogrodów i wszelkich terenów zieleni towarzyszących szpitalom. Wspomniano także o nielicznych wskazówkach ogrodników i architektów epoki w tym zakresie. Na podstawie tych publikacji, analiz historycznych planów i badań terenowych wyodrębniono główne elementy składające się na komponowany krajobraz szpitala psychiatrycznego przełomu XIX i XX wieku. Opierał się on na zasadach zbliżonych do kompozycji krajobrazu parkowego towarzyszącego wiejskim rezydencjom z pewnymi elementami parku publicznego. W jego skład wchodziły: ogrody przypawilonowe i przyoddziałowe (airing court), otaczające tereny o charakterze parkowym, obszary recepcyjne i reprezentacyjne (podjazd), aleje, obiekty i obszary sacrum, dalekie widoki zapożyczone oraz gospodarstwa i ogrody użytkowe. Każdy z tych elementów został opisany i zilustrowany stosownymi przykładami. Ze względu na liczne podobieństwa i częste porównania planów wielu szpitali do osiedli w typie miast ogrodów dokonano także bilansu podobieństw i różnic do projektu miasta głoszonego przez Ebenezera Howarda. Ponadto, założenie, że miejsce leczenia ma mieć znaczący wpływ na proces zdrowienia narzucało także odniesienia utopii urbanistycznych i projektów miast idealnych epoki, które przypisywały planowaniu moc wdrażania głębokich przemian społecznych. Współcześnie w dziedzinie psychologii środowiskowej i neuropsychologii prowadzi się liczne badania nad terapeutycznym oddziaływaniem przyrody. Część z nich stanowią także analizy wpływu korzystania z parków i ogrodów na zdrowie psychiczne i samopoczucie. Dlatego zdecydowano się skonfrontować dobór oraz opisane użytkowanie elementów krajobrazu historycznych szpitali psychiatrycznych z najnowszymi doniesieniami w tym zakresie. Z przeprowadzonego przeglądu wynika, że w przeszłości intuicyjnie stosowano rozwiązania projektowe w zakresie zieleni, które mogły mieć pozytywny wpływ na samopoczucie pacjentów, jednak nie zawsze korzystano z nich w sposób, który pozwalałby osiągnąć spodziewane korzyści terapeutyczne, bądź wspomagające. Tym niemniej, obecnie krajobraz i zielone zasoby historycznych szpitali psychiatrycznych mogą mieć znaczny potencjał do zastosowania ekoterapii w różnych jej odmianach jako aktywności wspierającej leczenie i profilaktykę zaburzeń psychicznych. Niezależnie od możliwości i prób wprowadzania terapii wspomagających wykorzystujących walory historycznego krajobrazu współcześnie działające w starych murach placówki borykają się w licznymi problemami związanymi z zarządzaniem swoimi terenami. Dogłębna analiza kierunków przemian, ich przyczyn i skutków oraz relacji nowego użytkowania z historycznym krajobrazem i obiektami szpitali psychiatrycznych zasługuje na osobne opracowanie i zostanie podjęta w przyszłości. Zasygnalizowano jedynie trzy główne zaobserwowane tendencje w tym zakresie. Pierwszym z nich jest całkowita zmiana funkcji - zwykle na mieszkaniową - zakładająca fundamentalną zmianę tożsamości obszaru i wyrugowanie śladów pierwotnego użytkowania. Drugą, wygaszenie funkcji leczniczych i wprowadzenia użytkowania publicznego, instytucjonalnego (naukowego bądź związanego z kulturą) z zachowaniem odniesień do przeszłości miejsca. Trzecim wariantem jest zwykle wprowadzanie współczesnych uzupełnień służących aktualnym funkcjom leczniczym przy założeniu modernizacji historycznych obiektów z poszanowaniem ich wartości i poszerzeniem oferty placówki leczniczej - np. dzięki organizacji oddziałów dziennej opieki, czy centrów rehabilitacji i aktywności seniorów. Podsumowując, idea krajobrazu terapeutycznego w kompozycji zespołów szpitali psychiatrycznych powstałych w XIX i na początku XX wieku może nadal być aktualna i potencjalnie przynieść także i dziś korzyści wspomagające terapię. Współcześnie budowane szpitale psychiatryczne są obiektami o mniejszych rozmiarach i nawet jeśli dysponują ogrodami, to o znacznie skromniejszej powierzchni. W wielu historycznych instytucjach ogrody nie muszą być urządzane całkowicie od nowa, lecz jedynie przywrócone do użytkowania. Wątpliwości można byłoby mieć jedynie co do tego, czy ogród historyczny - a takimi w większości są ogrody dawnych szpitali psychiatrycznych - może być dobrym miejscem do działań terapeutycznych. Istnieją jednak przykłady, które potwierdzają, że działania ze spektrum ekoterapii można z powodzeniem realizować w otoczeniu krajobrazu zabytkowego. ]]>
<![CDATA[Qualitative analysis of the influence of the non-linear material characteristics of flexible adhesive on the performance of lap joints]]> Tue, 19 Jan 2021 09:42:12 +0100 Szeptyński, Paweł; Nowak, Marcin
rodzaj: artykuł w czasopiśmie
Abstrakt: This paper discusses the issue of a lap joint in the form of a thin film attached to a rigid base with the use of a layer of flexible adhesive exhibiting a non-linear constitutive relation between shear stress and distortional strain, which is approximated by the second-order power law. Similarity theory is used to perform a qualitative analysis of the influence of magnitude of non-linearity on the performance of the system. The introduced similarity numbers are proposed to be used in formulation of simple design tools. The analysis is performed by solving the derived governing equations for characteristic cases in a numerical way combining the fourth-order Runge-Kutta algorithm and iterative shooting ruled by a steepest descent method. The results are compared with the results of the plane stress finite element analysis. It can be observed that within considered models the influence of the material non-linearity is of minor importance and in some cases it may be almost entirely surpassed by local effects resulting from boundary conditions. For relatively small load intensity it becomes negligibly small.]]>
<![CDATA[Flame retardancy of biobased composites - research development]]> Tue, 19 Jan 2021 08:56:01 +0100 Sienkiewicz, Anna ; Czub, Piotr
rodzaj: artykuł w czasopiśmie
Abstrakt: Due to the thermal and fire sensitivity of polymer bio-composite materials, especially in the case of plant-based fillers applied for them, next to intensive research on the better mechanical performance of composites, it is extremely important to improve their reaction to fire. This is necessary due to the current widespread practical use of bio-based composites. The first part of this work relates to an overview of the most commonly used techniques and different approaches towards the increasing the fire resistance of petrochemical-based polymeric materials. The next few sections present commonly used methods of reducing the flammability of polymers and characterize the most frequently used compounds. It is highlighted that despite adverse health effects in animals and humans, some of mentioned fire retardants (such as halogenated organic derivatives e.g., hexabromocyclododecane, polybrominated diphenyl ether) are unfortunately also still in use, even for bio-composite materials. The most recent studies related to the development of the flame retardation of polymeric materials are then summarized. Particular attention is paid to the issue of flame retardation of bio-based polymer composites and the specifics of reducing the flammability of these materials. Strategies for retarding composites are discussed on examples of particular bio-polymers (such as: polylactide, polyhydroxyalkanoates or polyamide-11), as well as polymers obtained on the basis of natural raw materials (e.g., bio-based polyurethanes or bio-based epoxies). The advantages and disadvantages of these strategies, as well as the flame retardants used in them, are highlighted. ]]>
<![CDATA[Living environment quality determinants, including PM2.5 and PM10 dust pollution in the context of spatial issues – the case of Radzionków]]> Mon, 18 Jan 2021 11:56:41 +0100 Blazy, Rafał
rodzaj: rozdział/fragment książki
Abstrakt: This chapter discusses living environment determinants in Central and Eastern Europe. It is based on a case study of the city of Radzionków, which has 16 thousand inhabitants and is located in the Silesian agglomeration in southern Poland. Hard coal has been mined in this area for almost two hundred years, and it is the main fuel used for central heating. A total of 360 buildings, divided into groups of 60 buildings each, were investigated in the selected city. Three distinct areas were distinguished in terms of living environment quality, depending on building technical condition, heating method and location. These qualities were found to be largely determined by site-specific spatial and geophysical conditions. A significant portion of the literature was found to ignore the spatial factors mentioned in this paper, instead focusing primarily on statistical data concerning pollution. This study examines site-specific variables and presents differences in air pollution levels as examined in relation to the morphological structure of development, the degree of building modernisation and heating system types.]]>
<![CDATA[A boosting extreme learning machine for nearinfrared spectral quantitative analysis of diesel fuel and edible blend oil samples]]> Mon, 18 Jan 2021 11:39:18 +0100 Bian, Xihui ; Zhang, Caixia ; Tan, Xiaoyao ; Dymek, Michal; Guo, Yugao ; Lin, Ligang ; Cheng, Bowen ; Hu, Xiaoyu
rodzaj: artykuł w czasopiśmie
Abstrakt: Extreme learning machines (ELMs) have drawn increasing attention due to their characteristics of simple structure, high learning speed and excellent performance. However, a single ELM tends to low predictive accuracy and instability in dealing with quantitative analysis of complex samples. To further improve the predictive accuracy and stability of ELMs, a new quantitative model, called the boosting ELM is proposed. In this approach, a large number of ELM sub-models are sequentially built by selecting a certain number of samples from the original training set according to the distribution of the sampling weights, and then their predictions are aggregated using the weighted median. The activation function and the number of hidden nodes of ELM sub-models are determined simultaneously by the ratio of mean value and standard deviation of correlation coefficients (MSR). The performance of the proposed method is tested with diesel fuel and blended edible oil samples. Compared with partial least squares (PLS) and ELMs, our results demonstrate that the boosting ELM is an efficient ensemble model and has obvious superiorities in predictive accuracy and stability. Therefore, the proposed method may be an alternative for near-infrared (NIR) spectral quantitative analysis of complex samples.]]>
<![CDATA[The role of remote teaching platforms in architectural education]]> Mon, 18 Jan 2021 10:31:49 +0100 Schnotale, Grzegorz
rodzaj: artykuł w czasopiśmie
Abstrakt: In traditional education the class time available for workshops and lectures is limited. Students always should have opportunities to expand their knowledge in their chosen field and there are students who want to invest more time in gaining new skills. For these reasons, at Cracow University of Technology, Kraków, Poland, course material and exercises for students can be made available through an on-line education platform. The Internet is changing the ways of learning and on-line platforms make up-to-date knowledge always available to students. Various learning environments are available through the on-line platform. Educators can upload training materials; for example, a movie, a presentation or various exercises. Contemporary education has to be dynamic and interesting to gain students’ attention. The e-learning framework (ELF) is based on a Moodle learning platform and is in use in the Faculty of Architecture at Cracow University of Technology (FA-CUT). ]]>
<![CDATA[Fly-ash-based geopolymers reinforced by melamine fibers]]> Mon, 18 Jan 2021 09:57:28 +0100 Kozub, Barbara; Bazan, Patrycja; Mierzwiński, Dariusz; Korniejenko, Kinga
rodzaj: artykuł w czasopiśmie
Abstrakt: This paper presents the results of research on geopolymer composites based on fly ash with the addition of melamine fibers in amounts of 0.5%, 1% and 2% by weight and, for comparison, without the addition of fibers. The melamine fibers used in the tests retain their melamine resin properties by 100% and are characterized by excellent acoustic and thermal insulation as well as excellent filtration. In addition, these fibers are nonflammable, resistant to chemicals, resistant to UV radiation, characterized by high temperature resistance and, most importantly, do not show thermalrelated shrinking, melting and dripping. This paper presents the results of density measurements, compressive and flexural strength as well as the results of the measurement of thermal radiation changes in samples subjected to a temperature of 600 C. The results indicate that melamine fibers can be used as geopolymer reinforcement. The best result was achieved for 0.5% by weight amount of reinforcement, approximately 53 MPa, compared to 41 MPa for a pure matrix. In the case of flexural strength, the best results were obtained for the samples made of unreinforced geopolymer and samples with the addition of 0.5% by weight of melamine fibers, which were characterized by bending strength values above 9 MPa, amounting to 10.7 MPa and 9.3 MPa, respectively. The thermal radiation measurements and fire-jet test did not confirm the increasing thermal and fire resistance of the composites reinforced by melamine fiber.]]>
<![CDATA[Investigation and optimization of the SLM and WEDM processes’ parameters for the AlSi10Mg-sintered part]]> Mon, 18 Jan 2021 09:03:32 +0100 Franczyk, Emilia; Machno, Magdalena; Zębala, Wojciech
rodzaj: artykuł w czasopiśmie
Abstrakt: Presented study concerns the issue of processing the AlSi10Mg aluminum alloy with a use of WEDM technology. Two types of samples tested during the experiment were previously produced in SLM and in casting processes. The aim of the research was to determine the dependence of the input parameters of SLM (laser scanning speed) and WEDM (current amplitude) processes on the performance of the WEDM process as well as on the roughness of the cut surfaces. The experiment was carried out on a specially prepared test stand, and the results’ analysis was carried out using the ANOVA (analysis of variance). A strong influence of the WEDM current on the process speed and on the Ra and Rz roughness parameters of the produced samples was found. The effect of SLM laser scanning speed was not so strong, but it tended to be uniform. On the other hand, the influence of the tested parameters on the WEDM process energy turned out to be insignificant and irregular. It was also found that for the WEDM process a sample made in SLM technology with relatively high laser scanning speed may be a better choice than the cast one. A case study was carried out to optimize the parameters of the tested processes.]]>
<![CDATA[Modelowanie serii czasowych przepływów w krótkoterminowej prognozie hydrologicznej]]> Fri, 15 Jan 2021 12:22:43 +0100 Siuta, Tomasz
rodzaj: artykuł w czasopiśmie
Abstrakt: Cel pracy W niniejszym artykule przedstawiono przykład opracowania skutecznej prognozy krótkoterminowej w cza-sie rzeczywistym przepływów wezbraniowych w przekroju wodowskazowym wybranej zlewni różnicowej rzeki Wisły. Prognoza ta oparta jest na przepływach obserwowanych w przekrojach wejściowych i wyjścio-wym systemu rzecznego z dobowym opóźnieniem bez uwzględnienia jakichkolwiek danych opadowych. Materiał i metody W celu oceny jakości prognozy opracowano cztery typy modeli serii czasowych chwilowego natężenia prze-pływu dla przekroju wyjściowego Smolice na rzece Wiśle. Pierwszy typ modelu to konwencjonalna liniowa zależność autoregresyjna (AR), drugi-trójwarstwowa sieć neuronowa typu feedforward (SSN), trzeci -dwu-warstwowa rekurencyjna sieć neuronowa i czwarty- trójwarstwowa rekurencyjna sieć neuronowa (RNN). Wszystkie modele były kalibrowane i testowane w oparciu o dane historyczne w formie hydrogramów na-tężenia przepływu. Wyniki i wnioski Spośród wszystkich testowanych typów modeli najdokładniejszą prognozę wartości chwilowej natężenia przepływu w przekroju zamykającym zlewnię uzyskano za pomocą modelu RNN. Ten typ modelu miał również największą zdolność do generalizowania wyników wykazując podobną jakość prognozy w trzech niezależnych testach.]]>
<![CDATA[PEG-POSS star molecules blended in polyurethane with flexible hard segments: morphology and dynamics]]> Fri, 15 Jan 2021 10:32:53 +0100 Raftopoulos, Konstantinos N. ; Hebda, Edyta ; Grzybowska, Anna ; Klonos, Panagiotis A.; Kyritsis, Apostolos ; Pielichowski, Krzysztof
rodzaj: artykuł w czasopiśmie
Abstrakt: A star polymer with a polyhedral oligomeric silsesquioxanne (POSS) core and poly(ethylene glycol) (PEG) vertex groups is incorporated in a polyurethane with flexible hard segments in-situ during the polymerization process. The blends are studied in terms of morphology, molecular dynamics, and charge mobility. The methods utilized for this purpose are scanning electron and atomic force microscopies (SEM, AFM), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and to a larger extent dielectric relaxation spectroscopy (DRS). It is found that POSS reduces the degree of crystallinity of the hard segments. Contrary to what was observed in a similar system with POSS pendent along the main chain, soft phase calorimetric glass transition temperature drops as a result of plasticization, and homogenization of the soft phase by the star molecules. The dynamic glass transition though, remains practically unaffected, and a hypothesis is formed to resolve the discrepancy, based on the assumption of different thermal and dielectric responses of slow and fast modes of the system. A relaxation α′, slower than the bulky segmental α and common in polyurethanes, appears here too. A detailed analysis of dielectric spectra provides some evidence that this relaxation has cooperative character. An additional relaxation g, which is not commonly observed, accompanies the Maxwell Wagner Sillars interfacial polarization process, and has dynamics similar to it. POSS is found to introduce conductivity and possibly alter its mechanism. The study points out that different architectures of incorporation of POSS in polyurethane affect its physical properties by different mechanisms.]]>
<![CDATA[Modified maximum power point tracking algorithm under time-varying solar irradiation]]> Fri, 15 Jan 2021 09:29:19 +0100 Yildirim, Mehmet Ali; Nowak-Ocłoń, Marzena
rodzaj: artykuł w czasopiśmie
Abstrakt: Solar photovoltaic (PV) energy is one of the most viable renewable energy sources, considered less polluting than fossil energy. However, the average power conversion efficiency of PV systems is between 15% and 20%, and they must operate with high efficiency. Photovoltaic cells have non-linear voltage–current characteristics that are dependent on environmental factors such as solar irradiation and temperature, and have low efficiency. Therefore, it becomes crucial to harvest the maximum power from PV panels. This paper aims to study and analyze the most common and well-known maximum power point tracking (MPPT) algorithms, perturb and observe (P&O) and incremental conductance (IncCond). These algorithms were found to be easy to implement, low-cost techniques suitable for large- and medium-sized photovoltaic applications. The algorithms were tested and compared dynamically using MATLAB/Simulink software. In order to overcome the low performance of the P&O and IncCond methods under time-varying and fast-changing solar irradiation, several modifications are proposed. Results show an improvement in the tracking and overall system efficiencies and a shortened response time compared with original techniques. In addition, the proposed algorithms minimize the oscillations around the maximum power point (MPP), and the power converges faster.]]>
<![CDATA[Quality assessment of compressed and resized medical images based on pattern recognition using a convolutional neural network]]> Fri, 15 Jan 2021 08:46:18 +0100 Urbaniak, Ilona; Wolter, Marcin
rodzaj: artykuł w czasopiśmie
Abstrakt: Given the explosive growth of the amount of medical image data being produced and transferred over networks every day, employing lossy compression and other irreversible image operations is inevitable. As expected, irreversible image coding may decrease image fidelity by introducing undesired artifacts, which may lead to an invalid diagnosis. The purpose of this study is to propose a no-reference model of assessing the quality of a degraded medical image resulting from irreversible coding, based on pattern recognition with the use of a convolutional neural network (CNN). This deep neural network consists of six convolutional layers followed by two fully connected ones for the final image classification. Such network geometry is a common choice for image classification problems nowadays. We aim to construct a model that is specialized for medical images and could serve as a predictor of image quality for algorithm performance analysis. This technique uses a CNN to classify shapes of randomly chosen grayscale intensities. The shapes and grayscale shadings were chosen with the intention to mimic structures and edges appearing in a medical image. Using the accuracy of a classifier, we attempt to quantitatively measure how the information content in an image deteriorates after applying irreversible operations and how this loss of information affects the ability/inability of the neural network to recognize the shapes. The technique may be used to study the performance of irreversible image coding techniques. Two irreversible operations are employed for image degradation: compression and interpolation. We show the difference of image quality resulting from JPEG and JPEG2000 compression algorithms followed by scaling using several interpolation techniques. The main result of this work is the development of a model to quantitatively measure image quality based on pattern recognition using a deep neural network. The presented model of quantitative assessment of medical image quality may be helpful in determining the thresholds for irreversible image post-processing algorithms parameters (i.e. quality factor in JPEG) in order to avoid misdiagnosis. Further investigation of this problem will involve a connection of the introduced method with specific pathologies and various medical image modalities.]]>
<![CDATA[Pretekst : zeszyty Zakładu Architektury Mieszkaniowej i Kompozycji Architektonicznej]]> Thu, 14 Jan 2021 14:40:15 +0100 rodzaj: redakcja numeru czasopisma
]]>
<![CDATA[Forma architektoniczna, funkcja oraz potencjał zespołów budynków wielorodzinnych zbudowanych w XXI wieku w Krakowie na przykładzie osiedli Kurdwanów Nowy i Piaski Nowe]]> Thu, 14 Jan 2021 13:23:51 +0100 Woźniczka, Magdalena
rodzaj: artykuł w czasopiśmie
Abstrakt: Piaski Wielkie oraz Kurdwanów to dawne przedmieścia Krakowa, których przestrzeń uległa silnym zmianom w ostatnim półwieczu. Pierwsza fala przemian nastąpiła w latach 70. i 80. kiedy to wzniesiono osiedla Piaski Nowe i Kurdwanów Nowy. Dalszy wzrost liczby mieszkańców Krakowa w XXI wieku, przyczynił się do ponownego skierowania uwagi inwestorów na te obszary. Obecnie tereny te są intensywnie zabudowywane. W niektórych rejonach tempo rozwoju infrastruktury drogowej i usługowej jest wolniejsze niż budowa obiektów mieszkaniowych. Tendencję tę widać w Piaskach Nowych, których funkcjonowanie opiera się głównie na ubiegłowiecznej infrastrukturze. Istotne stało się zbadanie form występujących w osiedlach, ich funkcji i potencjału, co pozwoli prowadzić skuteczną politykę przestrzenną w ich obrębie. Artykuł charakteryzuje formy architektoniczne, układy oraz podstawowe funkcje zespołów mieszkaniowych powstałych w latach 1999–2019 w Piaskach Nowych i Kurdwanowie Nowym. Wykonane badania wykazały, że oba osiedla mają predyspozycję do bycia atrakcyjnymi miejscami zamieszkania. Przyczyniają się do tego istniejące zaplecze usług publicznych oraz rozwijające się usługi prywatne. Ważnym czynnikiem jest też położenie miedzy III i IV obwodnicą Krakowa. Analiza form architektonicznych uwidoczniła zmiany w sposobie kształtowania zabudowy – zauważalna jest tendencja do upraszczania brył. Przedstawione realizacje pokazują, że uproszczenie nie jest jednak równoznaczne z końcem możliwości w kreowaniu form. Jest jedynie drogą do nowych rozwiązań.]]>
<![CDATA[Optymalne projektowanie konstrukcji w przypadku utraty stateczności dynamicznej – zjawisko flatteru dla nadkrytycznych prędkości płynu : rozprawa doktorska]]> Thu, 14 Jan 2021 12:48:01 +0100 Flis, Justyna Anna
rodzaj: rozprawa doktorska
Abstrakt: W pracy analizowano zagadnienie optymalizacji w projektowaniu konstrukcji kompozytowych narażonych na utratę stateczności dynamicznej – zjawisko flatteru dla nadkrytycznych prędkości płynu. Analiza obejmuje dwa rodzaje konstrukcji: płyty prostokątne (wykonane z laminowanych wielowarstwowych materiałów kompozytowych oraz z porowatych funkcjonalnych materiałów gradientowych) i panele cylindryczne (laminowane wielowarstwowe materiały kompozytowe). Szczegółowo omówiono metody rozwiązywania zagadnień utraty stateczności dynamicznej (analityczne i numeryczne). Przedyskutowano także zjawiska częstotliwości drgań swobodnych oraz maksymalizacji wartości ciśnienia aerodynamicznego w celu rozwiązania zadań optymalizacji. Przeprowadzona w pracy analiza dotyczy struktur z różnymi parametrami geometrycznymi, warunkami brzegowymi, orientacją laminatu oraz konfiguracją rozkładu porowatości w funkcjonalnych materiałach gradientowych. Zaproponowano i zastosowano z powodzeniem nową formę zmiennych decyzyjnych w przypadku laminatów o dyskretnej orientacji włókien. Zadania optymalizacji rozwiązano zarówno analitycznie stosując pakiet symboliczny Mathematica (konstrukcja ze specyficznymi warunkami brzegowymi), jak i numerycznie przy użyciu metody elementów skończonych – pakiet NISA II (konstrukcja z dowolnymi warunkami brzegowymi).]]>
<![CDATA[Climate change impacts on contaminant loads delivered with sediment yields from different land use types in a Carpathian basin]]> Thu, 14 Jan 2021 11:40:13 +0100 Szalińska, Ewa; Zemełka, Gabriela; Kryłów, Małgorzata; Orlińska-Woźniak, Paulina; Jakusik, Ewa; Wilk, Paweł
rodzaj: artykuł w czasopiśmie
Abstrakt: Soil runoff and sediment transport are considered as an important vector for particle-bound contaminant transfer from source to receiving waters. Under changing climate conditions and rapid basin development, identification of sediment origins is critical for planning further action to reduce erosion effects, and further pollution to surface waters. The goal of this study was to distinguish sediment sources in a Carpathian basin (Wolnica River, southern Poland) and to perform source-oriented contaminant load estimations. Sediment yields (SYLD) and land use specific sediment yields (LUSY) were modeled with the use of the Macromodel DNS/SWAT (Discharge-Nutrients-Sea/Soil and Water Assessment Tool). Sorting of sediment sources was performed by the fingerprinting method using variability of the geochemical composition of soils (Pb, Zn, Cd, Cu, Mn, Ni, Fe, Hg, total N and P, Σ16 PAHs, and 137Cs) of four land use (LU) types: arable lands (A), grasslands (G), residential areas (R), and forests (F). Statistical analysis revealed six metals (Pb, Zn, Cd, Cu, Ni, and Hg) as fingerprint properties providing the best source discrimination in this basin. The contribution of particular land use origin assessed with the use of the mixing model varied in the range of 20–30%. Finally, estimation of land use specific contaminant loads in suspended sediments was performed as a result of a modeling and sediment fingerprinting combination. The final estimates revealed yearly LUSY values varying between 716 t/y for A, 12 t/y for F, and metal loads from 31 kg/y for Zn to values below 100 g/y for Cd and Hg. Long-term predictions (2046–2055) of the metal loads revealed an increase by 75% under the combined RCP 8.5 climate change and land use scenarios. These findings are of great value for land management in the Carpathian basins, especially with regards to the predicted increase of forest cover which significantly alters contaminant signals conveyed through the system.]]>
<![CDATA[Usuwanie przecieków w żelbetowych zbiornikach na wodę]]> Thu, 14 Jan 2021 10:45:29 +0100 Dąbrowski, Wojciech; Żaba, Tadeusz; Zielina, Michał
rodzaj: artykuł w czasopiśmie
]]>
<![CDATA[Digital monument reconstruction in architectural studies: synthesis of research on the previously unknown form of the palace in Łobzów (Cracow) from the period of the rule of John III Sobieski]]> Thu, 14 Jan 2021 09:48:18 +0100 Pikulski, Piotr
rodzaj: artykuł w czasopiśmie
Abstrakt: The former palace in Łobzów, which currently houses the Faculty of Architecture of the Cracow University of Technology, has an exceedingly rich architectural history. Since the Middle Ages, it has gone through a series of changes that have significantly altered its form each time. Thanks to modern digital reconstruction technology, it was possible to recreate all of its architectural phases in the form of 3D models on the basis of archaeological studies and the analysis of historical materials. The models were then used to reconstruct the most probable appearance of the building during the period when the Polish king John III Sobieski lived there. Determining the most probable state of the palace’s preservation during King Sobieski’s rule, which had not been investigated thus far, was possible only because of the combining of traditional research methods with modern technology.]]>
<![CDATA[DOE application for analysis of tribological properties of the Al2O3/IF-WS2 surface layers]]> Thu, 14 Jan 2021 09:19:11 +0100 Korzekwa, Joanna; Fal, Michał; Gądek-Moszczak, Aneta
rodzaj: artykuł w czasopiśmie
Abstrakt: The article presents the effect of the processing parameters on tribological properties of aluminum oxide coatings Al2O3 doped with fullerene-like tungsten disulfide (IF-WS2) by design of experiment (DOE). Anodic oxidation of aluminum alloy was carried out in a ternary solution of SAS (sulfuric, adipic and oxalic acids) with IF-WS2. The thickness, geometric structure of the surface (SGP) and the tribological properties such as friction coefficient of tribological pair: Al2O3/IF-WS2 with polieteroeteroketon filled with graphite, carbon fiber and PTFE (named PEEK/BG) were investigated. The influence of electrolysis time and temperature on the tribological properties of coatings was studied using 2k factorial design. The stabilization of the friction coefficient indicates generation of steady anti-wear and anti-seizure Al2O3/IF-WS2 oxide coatings. DOE suggest i.e. high positive correlation between oxide thickness and time and temperature of the anodizing process]]>
<![CDATA[Technologies of essential oils]]> Thu, 14 Jan 2021 08:57:43 +0100 Rachwalik, Rafał; Kurowski, Grzegorz; Vogt, Elżbieta; Vogt, Otmar
rodzaj: książka
Abstrakt: The monograph presents methods for preparation, properties and applications of essential oils. It should be mentioned that at present, almost 3.000 plants containing essential oils are known, but the oils are obtained only from 300 of them. Laboratory and industrial methods of collection of essential oils are discussed in the monograph, as well as methods of investigation of their properties.Thus, it is focused on the most popular commercial essential oils used in food industry, cosmetic industry, pharmaceutical industry, as well as aromatherapy. Moreover, it gives examples of less known oils, but also important considering their properties. As a criterion for division into individual groups, the most popular of classification was adopted, taking into account the plant part, from which the essential oil may be extracted. Therefore, essential oils obtained from: blossoms and flower buds, fruits, seeds, leaves, stalks and twigs, from bark and directly from wood, from resins, roots and rhizomes, are distinguished.Additionally, exemplary chromatograms for commercial essential oils described in the monograph are presented.]]>
<![CDATA[Biologiczne oczyszczanie ścieków zawierających formaldehyd. Cz. II**. Oczyszczanie w warunkach niedotlenionych i beztlenowych. Wspomaganie fizyczno-chemiczne]]> Wed, 13 Jan 2021 14:25:12 +0100 Baczyński, Tomasz
rodzaj: artykuł w czasopiśmie
Abstrakt: Dokonano przeglądu literatury dotyczącej badań nad biologicznym oczyszczaniem ścieków zawierających formaldehyd w warunkach niedotlenionych i beztlenowych. Omówiono ścieżki degradacji formaldehydu oraz oddziaływanie inhibicyjne. Przedstawiono także wyniki badań nad wspomaganiem oczyszczania biologicznego metodami fizyczno-chemicznymi.]]>
<![CDATA[Biologiczne oczyszczanie ścieków zawierających formaldehyd. Cz. I. Charakterystyka ścieków i oczyszczanie w warunkach tlenowych]]> Wed, 13 Jan 2021 13:28:27 +0100 Baczyński, Tomasz
rodzaj: artykuł w czasopiśmie
Abstrakt: Przedstawiono przegląd literatury dotyczącej badań nad biologicznym oczyszczaniem ścieków zawierających formaldehyd. Podano ogólną charakterystykę tego związku oraz rodzajów ścieków, w których on występuje. Zestawiono oraz omówiono wyniki prac doświadczalnych nad biologicznym oczyszczaniem ścieków formaldehydowych przeprowadzonych w warunkach tlenowych, zarówno z nitryfikacją, jak i bez niej. Ponadto przedstawiono w zarysie ścieżki biodegradacji oraz oddziaływanie inhibicyjne formaldehydu w takich warunkach.]]>
<![CDATA[Comparison of CFD and multizone modeling from contaminant migration from a household gas furnace]]> Wed, 13 Jan 2021 11:52:18 +0100 Szczepanik-Scislo, Nina; Scislo, Lukasz
rodzaj: artykuł w czasopiśmie
Abstrakt: In Central and Eastern Europe, a growing popularity of gas heaters as the main source of heat and domestic hot water can be observed. This is the result of new laws and strategies for funding that have been put in place to encourage households to stop using coal and replace it with cleaner energy sources. However, there is a growing concern that gas furnaces are prone to malfunction and can be a threat to occupants through CO (carbon monoxide) generation. To see how a faulty gas furnace with a clogged exhaust may affect a household, a series of multizone and computational fluid dynamics (CFD) simulations were carried out using the CONTAM software and CFD0 editor created by the National Institute of Standards and Technology (NIST). The simulations presented different placements of the furnace and ventilation outlet in an attached garage. The results showed how the placement influenced contaminant migration and occupant exposure to CO. It changed the amount of CO that infiltrated to the attached house and influenced occupant exposure. The results may be used by future users to minimize the risk of CO poisoning by using the proper natural ventilation methods together with optimal placement of the header in the household. ]]>
<![CDATA[Assessment of the influence of preventive maintenance on the reliability and availability indexes of diesel locomotives]]> Wed, 13 Jan 2021 11:37:34 +0100 Szkoda, Maciej; Kaczor, Grzegorz; Pilch, Robert; Smolnik, Maksymilian
rodzaj: materiały konferencyjne w książce
Abstrakt: The article investigates the influence of the preventive maintenance on the reliability and availability indexes of the railway means of transport. The research was done using the method based on fault tree analysis (FTA) and the Monte Carlo simulation. The authors performed a cause and effect analysis of the occurrence of undesirable events during the operation of selected vehicles. They identified the weakest components of the rail vehicle that affect the downtime and mean availability most significantly. Specialised software including Weibull++, BlockSim and MiniTab aided calculations were used to illustrate the application the results of a modernisation project involving a 6Dg diesel locomotive, carried out in cooperation with the biggest Polish rail carrier. The evaluation of reliability and availability was based on real operation data of a selected sample of 75 locomotives. The obtained results indicate that the proposed solution has a wide applicability potential.]]>
<![CDATA[Hybrid bilayer PLA/chitosan nanofibrous scaffolds doped with ZnO, Fe3O4, and Au nanoparticles with bioactive properties for skin tissue engineering]]> Wed, 13 Jan 2021 11:12:27 +0100 Radwan-Pragłowska, Julia; Janus, Łukasz; Piątkowski, Marek; Bogdał, Dariusz; Matýsek, Dalibor
rodzaj: artykuł w czasopiśmie
Abstrakt: Burns affect almost half a million of Americans annually. In the case of full-thickness skin injuries, treatment requires a transplant. The development of bioactive materials that promote damaged tissue regeneration constitutes a great alternative to autografts. For this reason, special attention is focused on three-dimensional scaffolds that are non-toxic to skin cells and can mimic the extracellular matrix, which is mainly composed of nanofibrous proteins. Electrospinning, which enables the preparation of nanofibers, is a powerful tool in the field of biomaterials. In this work, novel hybrid poly (lactic acid)/chitosan biomaterials functionalized with three types of nanoparticles (NPs) were successfully developed. ZnO, Fe3O4, and Au NPs were investigated over their morphology by TEM method. The top layer was obtained from PLA nanofibers, while the bottom layer was prepared from acylated chitosan. The layers were studied over their morphology by the SEM method and their chemical structure by FT-IR. To verify their potential in burn wound treatment, the scaffolds’ susceptibility to biodegradation as well as moisture permeability were calculated. Also, biomaterials conductivity was determined in terms of electrostimulation. Finally, cytotoxicity tests were carried out by XTT assay and morphology analysis using both fibroblasts cell line and primary cells. The hybrid nanofibrous scaffolds displayed a great potential in tissue engineering.]]>
<![CDATA[New housing complexes in post-industrial areas in city centres in Poland versus cultural and natural heritage protection-with a particular focus on Cracow]]> Wed, 13 Jan 2021 10:10:30 +0100 Gyurkovich, Mateusz ; Gyurkovich, Jacek
rodzaj: artykuł w czasopiśmie
Abstrakt: The cityscape changes constantly, reflecting the socio-economic conditions of a given urbanised area—both globally and in any given country. Post-industrial buildings and complexes have been its important elements since the nineteenth century. At present, many of them are undergoing adaptive reuse. The oldest, which are parts of post-industrial heritage and define the local identity, are now located in city centres. Some are revitalised and often adapted into multi-family housing. This paper fills a gap in the research on revitalised areas in Polish city centres, especially the ones converted into housing. It notes the links between these projects with elements of urban green-blue infrastructure, as well as the methods of protection of the reused postindustrial heritage. Studies from 2000–2020 on Polish multi-family housing architecture prove that the quality of buildings and semi-public green spaces is becoming increasingly important to developers and buyers. Properly used and exposed post-industrial heritage can contribute to raising the attractiveness of such spaces. In combination with city greenery systems, they can form attractive townscape sequences, as proven by Cracow cases. The paper’s conclusions indicate that the preservation and exposition of post-industrial heritage in newly built housing complexes is affected by numerous factors. The most important of these are legal determinants based on both state-level and local law. Economic factors also play a major role, as they directly affect projects. The skills and talent of designers who can create unique proposals that expose surviving relicts and a given place’s genius loci even in the most restrictive of economic and legal conditions, are also not without significance.]]>
<![CDATA[Smart, tunable CQDs with antioxidant properties for biomedical applications-ecofriendly synthesis and characterization]]> Wed, 13 Jan 2021 09:10:52 +0100 Janus, Łukasz; Radwan-Pragłowska, Julia; Piątkowski, Marek; Bogdał, Dariusz
rodzaj: artykuł w czasopiśmie
Abstrakt: Carbon quantum dots (CQDs) are nanoobjects of a size below 10 nm. Due to their favorable features, such as tunable luminescence, unique optical properties, water solubility, and lack of cytotoxicity, they are willingly applied in biomedicine. They can be obtained via bottom-up and top-down methods. However, to increase their quantum yield they must undergo post-processing. The aim of the following research was to obtain a new type of CQDs modified with a rhodamine b derivative to enhance their fluorescence performance without biocompability deterioration. For their preparation glucose was used as a precursor and four different carbonizing agents which affected semi- and final products luminescence properties. The ready nanomaterials were investigated over their chemical structure by FTIR and NMR, whereas morphology was investigated by the TEM method. Their optical properties were determined by UV–VIS spectroscopy. Fluorescence behavior, photo- and pH-stability, as well as solvatochromism showed their applicability in various biomedical applications due to the controlled properties. The samples exhibited excellent antioxidant activity and lack of cytotoxicity on L929 mouse fibroblasts. The results showed that proposed strategy enables preparation of the superior nanomaterials with outstanding luminescence properties such as quantum yield up to 17% which can be successfully applied in cell labelling, bioimaging, and theranostics.]]>
<![CDATA[Equalizing opportunities of first year students of engineering faculties by improving their knowledge in mathematics]]> Tue, 12 Jan 2021 15:34:46 +0100 Bednarz, Adam; Bistroń, Anna; Radoń, Małgorzata; Strycharz-Szemberg, Beata; Zajęcka, Małgorzata
rodzaj: materiały konferencyjne w książce
Abstrakt: In the paper we a study of three approaches to improving mathematical knowledge of first year students of engineering faculties implemented at Cracow University of Technology: inclusion of necessary topics in the course of higher mathematics, self-learning with the help of e-learning platform, and a complementary course.]]>
<![CDATA[Simulation as a tool to analyze changes in transition to smart mobility]]> Tue, 12 Jan 2021 14:49:59 +0100 Makarova, Irina; Pashkevich, Anton; Shubenkova, Ksenia
rodzaj: materiały konferencyjne w książce
Abstrakt: Sustainable transport is one of the basic systems of Smart City. Smart mobility implies three ways: efficient urban and transport infrastructure planning, transition to sustainable modes of transport (public, non-motorized modes of transport, electric transport) and minimizing the number of residents' trips. These ways were considered in the case study of Naberezhnye Chelny. To increase the attractiveness and efficiency of public transport, macromodel based simulation of city transport system was conducted. Our developed transport macromodel also allows predicting the influence of Internet of Everything integration into usual life. Simulation shows how public transport routes' optimization together with application of E-learning methods into educational system of Smart City can help to reduce traffic loads. To improve bottlenecks of the city transport system we have built the set of transport micromodels of problematic areas and suggested some managerial decisions. To solve the Last Mile Problem, the intelligent system to evaluate the bicycle routes is suggested. The idea is to integrate bicycle lane with public transport routes to inspire residents to use sustainable multimodal schemes of transportation despite private cars.]]>
<![CDATA[Metoda sztucznych sieci neuronowych w prognozowaniu bieżącym zapotrzebowania na wodę w Krakowie : rozprawa doktorska]]> Tue, 12 Jan 2021 14:21:50 +0100 Muszyński, Krzysztof
rodzaj: rozprawa doktorska
Abstrakt: Autor przedstawia budowę oraz możliwości sztucznych sieci neuronowych jako nowoczesnego narzędzia predykcyjnego. Uwzględniono podstawowe ich zalety, w porównaniu z tradycyjnymi metodami ARIMA. Opisano próby stosowania sztucznych sieci neuronowych jako modeli predykcyjnych oraz charakterystykę etapów budowy takiego modelu. Dysertacja jest próbą odpowiedzi na postawioną tezę, że sztuczne sieci neuronowe są alternatywnym (w stosunku do metod statystycznych), łatwym i szybkim w konstrukcji oraz prostym w użyciu narzędziem rekursywnym do prognozowania godzinowego zapotrzebowania na wodę i nadającym się do praktycznego wykorzystania w pracy przedsiębiorstwa wodociągowo-kanalizacyjnego w oparciu o podstawowe dane. Praca ta porusza zagadnienia budowy i przygotowania modelu predykcyjnego opartego na obliczeniach neuronowych oraz opisuje wyniki jego zastosowania oraz rozwiązuje następujące cele cząstkowe: • określenie optymalnych zbiorów danych opisujących proces rozbioru wody w Krakowie, • określenie optymalnej struktury sieci neuronowej służącej do prognozy zużycia wody w Krakowie, • określenie najodpowiedniejszego algorytmu uczenia sieci neuronowej służącej do prognozy zużycia wody w Krakowie, • zbadanie możliwości sztucznych sieci neuronowych do predykcji godzinowego zapotrzebowania na wodę w Krakowie, • zweryfikowanie pracy sieci, alternatywnym, dostępnym i znanym modelem prognostycznym ARIMA. Wyniki obliczeń zrealizowano wykorzystując własny algorytm opracowany w środowisku MATLAB. Uwzględniono szereg czasowy danych godzinowego zapotrzebowania na wodę oraz dane egzogeniczne: meteorologiczne i kalendarzowe do predykcji rozbioru godzinowego. Zastosowano metodę SSN do prognozy na podstawie niepełnego cyklu zużycia wody, z 3 kolejnych miesięcy.]]>
<![CDATA[3D hierarchical, nanostructured chitosan/PLA/HA scaffolds doped with TiO2/Au/Pt NPs with tunable properties for guided bone tissue engineering]]> Tue, 12 Jan 2021 13:43:32 +0100 Radwan-Pragłowska, Julia; Janus, Łukasz; Piątkowski, Marek; Bogdał, Dariusz; Matysek, Dalibor
rodzaj: artykuł w czasopiśmie
Abstrakt: Bone tissue is the second tissue to be replaced. Annually, over four million surgical treatments are performed. Tissue engineering constitutes an alternative to autologous grafts. Its application requires three-dimensional scaffolds, which mimic human body environment. Bone tissue has a highly organized structure and contains mostly inorganic components. The scaffolds of the latest generation should not only be biocompatible but also promote osteoconduction. Poly (lactic acid) nanofibers are commonly used for this purpose; however, they lack bioactivity and do not provide good cell adhesion. Chitosan is a commonly used biopolymer which positively affects osteoblasts' behavior. The aim of this article was to prepare novel hybrid 3D scaffolds containing nanohydroxyapatite capable of cell-response stimulation. The matrixes were successfully obtained by PLA electrospinning and microwave-assisted chitosan crosslinking, followed by doping with three types of metallic nanoparticles (Au, Pt, and TiO2). The products and semi-components were characterized over their physicochemical properties, such as chemical structure, crystallinity, and swelling degree. Nanoparticles' and ready biomaterials' morphologies were investigated by SEM and TEM methods. Finally, the scaffolds were studied over bioactivity on MG-63 and effect on current-stimulated biomineralization. Obtained results confirmed preparation of tunable biomimicking matrixes which may be used as a promising tool for bone-tissue engineering.]]>
<![CDATA[The short-circuit protections in hybrid systems with low-power synchronous generators]]> Tue, 12 Jan 2021 12:08:13 +0100 Rozegnał, Bartosz ; Albrechtowicz, Paweł ; Mamcarz, Dominik ; Radwan-Pragłowska, Natalia ; Cebula, Artur
rodzaj: artykuł w czasopiśmie
Abstrakt: Single-phase short-circuits are most often faults in electrical systems. The analysis of this damage type is taken for backup power supply systems, from small power synchronous generators. For these hybrid installations, there is a need for standard protection devices, such as fuses or miniature circuit breaker (MCB) analysis. Experimental research mentioned that a typical protective apparatus in low-voltage installations, working correctly during supplying from the grid, does not guarantee fast off-switching, while short-circuits occur during supplication from the backup generator set. The analysis of single-phase short-circuits is executed both for current waveform character (including sub-transient and transient states) and the carried energy, to show the problems with the fuses and MCB usage, to protect circuits in installations fed in a hybrid way (from the grid and synchronous generator set).]]>
<![CDATA[Facile synthesis of surface-modified carbon quantum dots (CQDs) for biosensing and bioimaging]]> Tue, 12 Jan 2021 11:02:20 +0100 Janus, Łukasz; Radwan-Pragłowska, Julia; Piątkowski, Marek; Bogdał, Dariusz
rodzaj: artykuł w czasopiśmie
Abstrakt: Recently, fluorescent probes became one of the most efficient tools for biosensing and bioimaging. Special attention is focused on carbon quantum dots (CQDs), which are characterized by the water solubility and lack of cytotoxicity. Moreover, they exhibit higher photostability comparing to traditional organic dyes. Currently, there is a great need for the novel, luminescent nanomaterials with tunable properties enabling fast and effective analysis of the biological samples. In this article, we propose a new, ecofriendly bottom-up synthesis approach for intelligent, surface-modified nanodots preparation using bioproducts as a raw material. Obtained nanomaterials were characterized over their morphology, chemical structure and switchable luminescence. Their possible use as a nanodevice for medicine was investigated. Finally, the products were confirmed to be non-toxic to fibroblasts and capable of cell imaging. ]]>
<![CDATA[Innovative environment-friendly interior finishing technologies resistant to mold growth]]> Tue, 12 Jan 2021 10:33:24 +0100 Czerski, Piotr; Radziszewska-Zielina, Elżbieta; Grześkowiak, Wojciech Ł.; Kwaśniewska-Sip, Patrycja; Krzyściak, Paweł
rodzaj: materiały konferencyjne w książce
Abstrakt: Excessive mold development in interior spaces can be the cause of health problems in their users, as well as of a decrease in the comfort of use of internal spaces. The aim of our study was the development of a service that can ensure the long-term elimination of the cause and effects of mold in buildings by using new compositions of materials and finish application techniques. For this purpose, the most mold-resistant variants of construction material compositions and the technology of their application were selected. The study features an analysis of 18 variants of samples taken from climatic boards with various building finishes, which were tested for resistance to three species of mold: A. versicolor, Ch. globosum and P. funiculosum, under different climate and humidity combinations. The results of the study pointed to the most effective anti-mold technology. One comprehensive solution that can improve the conditions of the use of interior spaces is an external wall interior thermal insulation application system that employs silicate and lime sheets.]]>
<![CDATA[Realization of PLM application integration with AR technology]]> Tue, 12 Jan 2021 10:32:53 +0100 Duda, J.; Oleszek, S.
rodzaj: artykuł w czasopiśmie
Abstrakt: The Augmented Reality (AR) can be used to simulate and improve production processes in a virtual manufacturing system before their physical implementation. These techniques make it possible to connect the real world with the virtual one in real time and in a threedimensional environment. Their effective application to the implementation of the product development phases would significantly limit its subsequent reworking and modifications. The difficulty, however, is to design and integrate AR with virtual production systems. The paper presents a proposal for a technical procedure for the implementation of the integration of a commercial PLM and a proprietary AR system.]]>
<![CDATA[Studium wykonalności dla inwestycji współfinansowanych ze środków UE]]> Tue, 12 Jan 2021 08:51:09 +0100 Dalman, Jolanta; Jędrzejewski, Zbigniew; Kalinowska, Ewa; Muszyński, Krzysztof; Piwowarczyk, Marcin
rodzaj: książka
]]>