PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)最新文献

{"title":"Energy performance of the building envelopes provided with interior plasters with moisture buffering effect","authors":"J. Kočí, J. Maděra, J. Fořt","doi":"10.1063/1.5137983","DOIUrl":"https://doi.org/10.1063/1.5137983","url":null,"abstract":"In this paper, three different plasters are investigated in order to study their effect on whole building envelope energy performance. As the studied plaster contain various amount of super absorbent polymers, they are primarily intended to control relative humidity levels in both building envelopes and interior environments. However, influencing moisture levels in the envelopes will have certain impact on energy performance as well. In order to investigate that effect, the material parameters of all studied plasters were determined and then, series of computational simulations was carried out. The results showed, that even a thin layer of interior plaster may have significant impact on overall building envelope performance. The studied plaster contributed to the reduction of energy consumption from 4 to 6 %.In this paper, three different plasters are investigated in order to study their effect on whole building envelope energy performance. As the studied plaster contain various amount of super absorbent polymers, they are primarily intended to control relative humidity levels in both building envelopes and interior environments. However, influencing moisture levels in the envelopes will have certain impact on energy performance as well. In order to investigate that effect, the material parameters of all studied plasters were determined and then, series of computational simulations was carried out. The results showed, that even a thin layer of interior plaster may have significant impact on overall building envelope performance. The studied plaster contributed to the reduction of energy consumption from 4 to 6 %.","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88891258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micromagnetic simulation of fast GHz gyromotion of magnetic vortex core in Permalloy disk with antidot","authors":"J. Shim, Y. Yu, D. Tartakovsky, H. Piao, Sang-Hyuk Lee, D. Kim, Seong-cho Yu, Dong-Hyun Kim","doi":"10.1063/1.5138097","DOIUrl":"https://doi.org/10.1063/1.5138097","url":null,"abstract":"We report our micromagnetic simulation investigation of the magnetic vortex core motion in a disk with an antidot. With variation of antidot geometry, faster core gyration is expected, where gyrotropic motion near antidots becomes quite sensitively depending on the antidot geometry, with frequency up to several GHz. Our finding opens a possibility to boost up the core motion of a ferromagnetic nanostructure with introducing geometrical modulation.We report our micromagnetic simulation investigation of the magnetic vortex core motion in a disk with an antidot. With variation of antidot geometry, faster core gyration is expected, where gyrotropic motion near antidots becomes quite sensitively depending on the antidot geometry, with frequency up to several GHz. Our finding opens a possibility to boost up the core motion of a ferromagnetic nanostructure with introducing geometrical modulation.","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"89 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77036364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Survival analysis of Portuguese SMEs: A preliminary approach","authors":"Ana Borges, M. Machado, F. Duarte","doi":"10.1063/1.5137998","DOIUrl":"https://doi.org/10.1063/1.5137998","url":null,"abstract":"A high rate of corporate bankruptcy can be devastating to economic and entrepreneurial ecosystem, especially among countries with a high concentration of Micro, Small and Medium Sized Enterprises (SMEs). Most bankruptcy studies focus on large companies, ignoring the fact that SMEs play a key role in achieving the objectives of job creation and economic growth, which are particularly relevant in the peripheral countries of the European Union. Considering the relevance of these companies to the Portuguese economy and the scarcity of empirical studies, in this paper we offer a preliminary study about the determinants of survival of SMEs operating in Portugal. Unlike to the traditional models (i.e., static models tending to ignore the longitudinal factor of time to predict corporate bankruptcy) this study applies the Cox proportional risk model in order to predict, based on historical data taken from SABI, the probability whether a SME will be in financial distress. Using data between 2008-18 and controlling for spatial effect (Region), Size and Activity Sector, we found evidences on the negative relation between ownership concentration and financial distress.","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75244414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic game model for finding the equilibrium level of migration flows","authors":"A. Tarasyev, G. Agarkov, T. V. Tarasyeva, J. B. Jabbar","doi":"10.1063/1.5137938","DOIUrl":"https://doi.org/10.1063/1.5137938","url":null,"abstract":"Effective regulation of labor migration implies the need to predict the volume, structure and direction of migration. Model description and forecasting of migration processes is necessary to optimize the flow of labor resources between labor markets that arise as a result of new trends in migration and reform of society. Weak regulation of labor migration in the absence of a complete information base necessary for migrants to decide on the optimal choice of the region of destination of migration, leads to an increase in the share of labor migrants employed in the informal sector of the economy, which as a result reduces the potential of human capital in the regions. The analysis of migration processes shows the need to simulate the dynamics of migration flows, which allows to describe the trends in the redistribution of labor in the current period and to make forecasts for the short-term long-term perspective. In this regard, a number of existing types of models of population migration were considered and dynamic models of population migration were based on them. We developed a model tool based on a dynamic game model of labor migration, which determines the value of migration flows in the conditions of uneven distribution of income levels of the population in the regional labor markets. In accordance with the proposed model, migration flows tend primarily to regions with more attractive working conditions, in our case – to regions with higher wages. Based on the data obtained in the simulation, we can talk about a significant decrease in the average wage level in the sectors of the labor market occupied by migrants in the regions of attraction.Effective regulation of labor migration implies the need to predict the volume, structure and direction of migration. Model description and forecasting of migration processes is necessary to optimize the flow of labor resources between labor markets that arise as a result of new trends in migration and reform of society. Weak regulation of labor migration in the absence of a complete information base necessary for migrants to decide on the optimal choice of the region of destination of migration, leads to an increase in the share of labor migrants employed in the informal sector of the economy, which as a result reduces the potential of human capital in the regions. The analysis of migration processes shows the need to simulate the dynamics of migration flows, which allows to describe the trends in the redistribution of labor in the current period and to make forecasts for the short-term long-term perspective. In this regard, a number of existing types of models of population migration were considered and...","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74308226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smart building with Loxone system","authors":"M. Žáček","doi":"10.1063/1.5137964","DOIUrl":"https://doi.org/10.1063/1.5137964","url":null,"abstract":"The article focuses on Smart Building and its realization. The Smart Building uses Loxone for home control. The article aims to describe the house, describe the Loxone system and its components (hardware). Next show distribution point - the intelligence of the Smart Building. In conclusion, the article deals with other possibilities of expanding the intelligent house and its vision.The article focuses on Smart Building and its realization. The Smart Building uses Loxone for home control. The article aims to describe the house, describe the Loxone system and its components (hardware). Next show distribution point - the intelligence of the Smart Building. In conclusion, the article deals with other possibilities of expanding the intelligent house and its vision.","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75716158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of the sensitivity of trajectory log files gamma analysis - A method based on python scripts","authors":"Stanislav Bozhikov, Karina Mitarova, Filippa Vassileva, Bilyana Tacheva, B. Paarvanova, M. Karabaliev","doi":"10.1063/1.5138023","DOIUrl":"https://doi.org/10.1063/1.5138023","url":null,"abstract":"The aim of the study is to investigate and compare gamma index (γ) results obtained from the Trajectory log (TL) file of linear accelerator (Linac) to γ results obtained by Portal Dosimetry (PD) measurements. The Treatment planning system Eclipse was used to change the Dosimetric Leaf Gap (DLG) in order to study its influence on γ. In this paper, we used the python script API Pylinac (v.2.2.6) to analyze the TL file which stores the performance parameter data of the Linac for radiotherapy, in our case Varian True Beam STX. The results for the gamma passing rate (%GP) obtained from TL tend to be higher from those obtained by PD. We found that the values of %GP obtained by the two methods become comparable when the dose difference criterion used for TL data is 8 to 10 times smaller than the same criterion used with PD data. The methodology described here would allow a verification of the gamma analysis results by using the python script API Pylinac. This could make the verication of the plan before the treatment process more precise and reliable.The aim of the study is to investigate and compare gamma index (γ) results obtained from the Trajectory log (TL) file of linear accelerator (Linac) to γ results obtained by Portal Dosimetry (PD) measurements. The Treatment planning system Eclipse was used to change the Dosimetric Leaf Gap (DLG) in order to study its influence on γ. In this paper, we used the python script API Pylinac (v.2.2.6) to analyze the TL file which stores the performance parameter data of the Linac for radiotherapy, in our case Varian True Beam STX. The results for the gamma passing rate (%GP) obtained from TL tend to be higher from those obtained by PD. We found that the values of %GP obtained by the two methods become comparable when the dose difference criterion used for TL data is 8 to 10 times smaller than the same criterion used with PD data. The methodology described here would allow a verification of the gamma analysis results by using the python script API Pylinac. This could make the verication of the plan before the trea...","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74645186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Symbolic-numeric research of leaky modes in planar dielectric electromagnetic waveguide as inhomogeneous waves","authors":"D. Divakov, A. Egorov, K. Lovetskiy, L. Sevastianov","doi":"10.1063/1.5138102","DOIUrl":"https://doi.org/10.1063/1.5138102","url":null,"abstract":"In the case of guided and radiation modes of open waveguides, the Sturm-Liouville problem is formulated for self-adjoint second-order operators on the axis and the corresponding eigenvalues are real quantities for dielectric media. The search for eigenvalues and eigenfunctions corresponding to the leaky modes involves a number of difficulties: the boundary conditions for the leaky modes are not self-adjoint, so that the eigenvalues can turn out to be complex quantities. The problem of finding eigenvalues and eigenfunctions is associated with finding the complex roots of the nonlinear dispersion equation.The presence of complex eigenvalues corresponding to the leaky modes leads to an infinite increase of eigenfunctions corresponding to the leaky modes. In the present work, the leaky modes are considered as solutions of the problem for the wave equation and are analyzed as a wave process. Complex eigenvalues define the leaky modes as inhomogeneous waves. The proposed approach allows to obtain a mathematically sound representation of the leaky modes, within which one can see the region of existence of each particular leaky mode. The calculations of model structure, demonstrating the application of the described approach, are presented in the paper.In the case of guided and radiation modes of open waveguides, the Sturm-Liouville problem is formulated for self-adjoint second-order operators on the axis and the corresponding eigenvalues are real quantities for dielectric media. The search for eigenvalues and eigenfunctions corresponding to the leaky modes involves a number of difficulties: the boundary conditions for the leaky modes are not self-adjoint, so that the eigenvalues can turn out to be complex quantities. The problem of finding eigenvalues and eigenfunctions is associated with finding the complex roots of the nonlinear dispersion equation.The presence of complex eigenvalues corresponding to the leaky modes leads to an infinite increase of eigenfunctions corresponding to the leaky modes. In the present work, the leaky modes are considered as solutions of the problem for the wave equation and are analyzed as a wave process. Complex eigenvalues define the leaky modes as inhomogeneous waves. The proposed approach allows to obtain a mathematical...","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73020491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical simulation of fatigue crack growth in steel-aluminium transition joint","authors":"M. Kowalski, D. Rozumek","doi":"10.1063/1.5138099","DOIUrl":"https://doi.org/10.1063/1.5138099","url":null,"abstract":"The paper presents the results of fatigue crack growth simulation of the transition joint for S235JR steel and A5083 aluminum with the Grade 1 titanium interlayer coat and A1050 aluminum. Calculations were performed using ANSYS software. The publication presents the crack growth phenomena observed during fatigue testing. Additionally, calculations of residual stresses distributions induced by the process of joining materials during welding were carried out. Results of crack length calculations were comparable with experimantal data.The paper presents the results of fatigue crack growth simulation of the transition joint for S235JR steel and A5083 aluminum with the Grade 1 titanium interlayer coat and A1050 aluminum. Calculations were performed using ANSYS software. The publication presents the crack growth phenomena observed during fatigue testing. Additionally, calculations of residual stresses distributions induced by the process of joining materials during welding were carried out. Results of crack length calculations were comparable with experimantal data.","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88160777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The management of pedestrian emergency through dynamic assignment: Some consideration about the “Refugee Hellenism” Square of Kalamaria (Greece)","authors":"G. Tesoriere, A. Canale, A. Severino, I. Mrak, T. Campisi","doi":"10.1063/1.5138072","DOIUrl":"https://doi.org/10.1063/1.5138072","url":null,"abstract":"Generally the safety of public areas plays a fundamental role in the liveability of a city. Different evacuation simulations are carried out over the years in order to mitigate the problems connected to a chaotic movement of pedestrians. The panicgenerated by a possible risky event, often involves variations in the trajectories assumed in the same spaces in safe conditions. This is due to the variations in speed, pedestrian density in the sub-areas and if not properly evaluated, the evacuation process could generate crowds and therefore congestion, reducing the distance from the area object of an event. The present study focuses on the evaluation of different scenarios applied to the named square of Kalamaria (Greece) which is located near the two biggest pedestrian areas of the city. The study approach, based on pedestrian micro-simulation, is focused on the dynamic assignment,implemented in order to shape the path pedestrian choice behaviour by omitting the creation of static routes and using the OD matrix as flow input instead. Different steps are established in order to enquire input data, to calibrate the tool and obtain the results. These are based on the definition of areas and sub-areas in accordance with the pedestrian social force model.Through dynamic pedestrian assignment, different parameters were compared including speeds, density pedestrian and the LOS (Level Of Service), crossing the main square which may lead to benefits or criticalities as the risk level increases.Generally the safety of public areas plays a fundamental role in the liveability of a city. Different evacuation simulations are carried out over the years in order to mitigate the problems connected to a chaotic movement of pedestrians. The panicgenerated by a possible risky event, often involves variations in the trajectories assumed in the same spaces in safe conditions. This is due to the variations in speed, pedestrian density in the sub-areas and if not properly evaluated, the evacuation process could generate crowds and therefore congestion, reducing the distance from the area object of an event. The present study focuses on the evaluation of different scenarios applied to the named square of Kalamaria (Greece) which is located near the two biggest pedestrian areas of the city. The study approach, based on pedestrian micro-simulation, is focused on the dynamic assignment,implemented in order to shape the path pedestrian choice behaviour by omitting the creation of static routes and using the OD mat...","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78625474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eye-tracker technology in didactic research","authors":"Zuzana Václavíková","doi":"10.1063/1.5137973","DOIUrl":"https://doi.org/10.1063/1.5137973","url":null,"abstract":"Eye-tracking, i.e. the measurement of eye activity as a technology is used in many different areas. The most useful is for example using an eye-tracker as a tool for controlling a computer, as a diagnostic tool, as well as a tool for scientific research in many different subjects (marketing, education, medicine, and so on). Our experiences with using eye-tracker technology for research into the effectiveness of learning materials and learning outcomes will be described in the paper.Eye-tracking, i.e. the measurement of eye activity as a technology is used in many different areas. The most useful is for example using an eye-tracker as a tool for controlling a computer, as a diagnostic tool, as well as a tool for scientific research in many different subjects (marketing, education, medicine, and so on). Our experiences with using eye-tracker technology for research into the effectiveness of learning materials and learning outcomes will be described in the paper.","PeriodicalId":20565,"journal":{"name":"PROCEEDINGS OF THE INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2019 (ICCMSE-2019)","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79747657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}