Nowe zasoby w kolekcji Materiały konferencyjne http://suw.biblos.pk.edu.pl/ Biblioteka Politechniki Krakowskiej lipinska@biblos.pk.edu.pl 60 <![CDATA[Bot creating technology for wide use based on a logical approach]]> Fri, 22 Jan 2021 17:43:24 +0100 Telenyk, Sergii; Zharikov, Eduard; Vovk, Yevhenii; Nowakowski, Grzegorz; Tokmenko, Olena
rodzaj: materiały konferencyjne w książce
Abstrakt: The report proposes the information technology for computer-aided design and implementation of bots based on a logical approach. The general approach to creating bots with the use of a complex of logical and linguistic models has been described. The general scheme of work of the web-based system with the use of a chatbot has been developed. The model of logic of actions, and the inference method have been described, which can be used for the formal description of the bot creating process. An example of using a logical model to create a bot has been described.]]>
<![CDATA[FEM simulation of reinforcing plain bar pull-out test from concrete sample]]> Fri, 22 Jan 2021 13:58:21 +0100 Dyba, Marcin
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The paper presents results of 3D numerical modeling and calculations of a plain bar Ø16 mm concreted in the concrete cube during pull-out test. The prepared geometry reflected real sample dimensions. The mechanical parameters of the materials and assumptions for analysis were adopted based on the results obtained from the experimental tests previously carried out. Numerical calculations included non-linear finite element method (FEM) analysis. As a result of numerical calculations, it was possible to trace the deformation state, stresses and cracking as well as their development along with the change of the bar displacement in the sample. The increase of strains and stresses into the concrete sample occurred until the maximum value of the concrete-steel bond in accordance with the bond model was achieved. After exceeding the top, there was a constant decrease in strains and stresses in concrete with the increase in displacement of the bar (with extension). The first cracks appeared at a slip of approximately 0.1 mm. Cracking of concrete progresses with the increase of the bar displacement in relation to the concrete.]]>
<![CDATA[FEM analysis of bond behaviour between concrete and seven-wire prestressing strand]]> Fri, 22 Jan 2021 13:48:38 +0100 Dyba, Marcin
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: Detailed FEM analysis of the pull-out test of seven-wire prestressing strand form concrete sample is the purpose of the article. A 3D numerical model of a seven-wire prestressing strand concreted in the concrete cube was made. The assumption of the most trusted modeling of the strand geometry for numerical calculations was assumed. The mechanical parameters of the materials and interface elements for analysis were adopted based on the results obtained from the experimental tests previously carried out by the author. As a result of numerical calculations, it was possible to trace the deformation state, stresses and cracking as well as their development along with the change of the strand displacement in the sample. The images of deformations and stresses in the sample confirmed theoretical considerations and suppositions from experimental tests about its accumulation of the largest values in longitudinal concrete wedges in the closest cover of the strand. During the test, the concrete inside the cube cracked quickly. The first cracks appear in the zone of the nearest cover of the strand. Numerical analysis made it possible to observe both the failure mechanisms identified in the experimental tests. The first mechanism consisted in cutting the longitudinal concrete wedges between the individual wires. The second mechanism was based on the rotation of the strand and its slip along the route of the twist.]]>
<![CDATA[Bio-inspired optimization of thermomechanical structures]]> Fri, 22 Jan 2021 10:54:10 +0100 Szczepanik, Mirosław; Poteralski, Arkadiusz; Długosz, Adam; Kuś, Wacław; Burczyński, Tadeusz
rodzaj: materiały konferencyjne w książce
Abstrakt: The paper is devoted to an application of particle swarm optimizer and artificial immune system to optimization of elastic bodies under thermomechanical loading. The optimization problem is formulated as minimization of the volume, the maximal value of the equivalent stress, the maximal value of the temperature or maximization of the total dissipated heat flux with respect to specific dimensions of a structure. The direct problem is computed by means of the finite element method. Numerical examples for shape optimization are also included.]]>
<![CDATA[Intelligent optimal design of spatial structures]]> Fri, 22 Jan 2021 10:46:23 +0100 Burczyński, T.; Szczepanik, M.
rodzaj: materiały konferencyjne w czasopiśmie
Abstrakt: The paper deals with an application of the evolutionary algorithm (EA) and the particle swarm optimizer (PSO), to the optimization of shape, topology and material properties of spatial structures. Structures considered in this work are analyzed by the finite element method (FEM). Optimization criteria that are taken into account concern minimize mass and/or compliance. Numerical examples demonstrate that the method based on soft computing is a very effective technique for solving computer aided optimal design.]]>
<![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[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[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[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[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[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[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.]]>