{"title":"Development of the Universal Working Equipment of the Excavator for Preparation of Materials Based on Waste during the Road Building","authors":"I. Georgiadi, A. Kadyrov, V. Kunaev","doi":"10.26552/com.c.2023.022","DOIUrl":"https://doi.org/10.26552/com.c.2023.022","url":null,"abstract":"","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47963543","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}
The highways that are used in the countries with a sharp continental and a hot climate operate in the conditions when the pavement temperature changes along its height. This fact can lead to a significant increase in stresses in the layers of the road structure. In this paper is suggested an approach to solution of the joint problem of the pavement deformation and the heat propagation in it by a finite element modelling technique. The ANSYS software package was applied to solve the described problem. It is shown that an increase in the road surface temperature leads to a significant increase in the von Mises-equivalent stresses in the asphalt concrete upper layer and that is the cause for the ruts formation. Computational results also showed that at low temperatures of the road surface, the significant tensile stresses arise in its upper layers and that leads to formation of cracks.
{"title":"FEM Modelling of the Temperature Influence on the Stress-Strain State of the Pavement","authors":"Alexandr Shimanovsky, Abdujabbor Karabayev, Iryna Krakava, Volha Tsyhanok, Ibragim Sodikov, Abduvokhid Yunusov","doi":"10.26552/com.c.2023.011","DOIUrl":"https://doi.org/10.26552/com.c.2023.011","url":null,"abstract":"The highways that are used in the countries with a sharp continental and a hot climate operate in the conditions when the pavement temperature changes along its height. This fact can lead to a significant increase in stresses in the layers of the road structure. In this paper is suggested an approach to solution of the joint problem of the pavement deformation and the heat propagation in it by a finite element modelling technique. The ANSYS software package was applied to solve the described problem. It is shown that an increase in the road surface temperature leads to a significant increase in the von Mises-equivalent stresses in the asphalt concrete upper layer and that is the cause for the ruts formation. Computational results also showed that at low temperatures of the road surface, the significant tensile stresses arise in its upper layers and that leads to formation of cracks.","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135998202","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}
Resume With an increasing number of electric vehicles, their impact on electrical power systems is starting to be substantial. High deployment of these vehicles can even bring issues such as overloading the power transformers and power lines or loss of stability in the power system. Therefore, a suitable model, able to represent large groups or fleets of electric vehicles
{"title":"Modeling of Electric Vehicles Fleet's Charging Using Partial Differential Equations","authors":"Martina Kajanová, P. Braciník, Michal Kralovič","doi":"10.26552/com.c.2023.005","DOIUrl":"https://doi.org/10.26552/com.c.2023.005","url":null,"abstract":"Resume With an increasing number of electric vehicles, their impact on electrical power systems is starting to be substantial. High deployment of these vehicles can even bring issues such as overloading the power transformers and power lines or loss of stability in the power system. Therefore, a suitable model, able to represent large groups or fleets of electric vehicles","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45033893","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}
Resume A vital mode of transportation for short term mobility is paratransit. There are several studies on paratransit safety in developed nations but the developing nations like Bangladesh pay less attention to the issue. Therefore, the primary objective of this study is to evaluate the safety of paratransit using the perceptions of riders and drivers. Negative binomial model (NBM) was used to calibrate the safety of paratransit using 451 responses in Chittagong city. The study's findings highlight the significance of perceptions of travel safety in enhancing accessibility during the routine travel. Vehicle speed limits (km/h), which reduce the chance of accidents and having an institutional driver's license are among the variables that have emerged for the betterment of safety. Therefore, identifying factors that can makes these transportation systems safer will allow service managers and controllers to optimize passenger and driver safety
{"title":"Paratransit Safety as a Key Resource for Sustainable Mobility in Developing Countries","authors":"Md Tawkir Ahmed, Md Sifat Bin Siraj, T. Campisi","doi":"10.26552/com.c.2023.018","DOIUrl":"https://doi.org/10.26552/com.c.2023.018","url":null,"abstract":"Resume A vital mode of transportation for short term mobility is paratransit. There are several studies on paratransit safety in developed nations but the developing nations like Bangladesh pay less attention to the issue. Therefore, the primary objective of this study is to evaluate the safety of paratransit using the perceptions of riders and drivers. Negative binomial model (NBM) was used to calibrate the safety of paratransit using 451 responses in Chittagong city. The study's findings highlight the significance of perceptions of travel safety in enhancing accessibility during the routine travel. Vehicle speed limits (km/h), which reduce the chance of accidents and having an institutional driver's license are among the variables that have emerged for the betterment of safety. Therefore, identifying factors that can makes these transportation systems safer will allow service managers and controllers to optimize passenger and driver safety","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46779423","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}
Traffic conditions are constantly changing when driving in urban areas. Depending on the hour the vehicle is moving, the drive is more or less smooth. The aim of this study is to determine how the traffic conditions affect the energy consumption of an electric vehicle. Simulations carried out in AVL Cruise software, based on real-world testing, were used to determine this issue. The methodology for conducting the research and performing the simulations is also described. The energy consumption of the vehicle, on each route and during the hours studied, was compared to each other based on the results from the simulation software. The results of the study showed that the influence of traffic conditions on the vehicle energy consumption is significant. Simulations have shown that the need for numerous stops and driving at low speeds requires increased energy consumption.
{"title":"Influence of Traffic Conditions on the Energy Consumption of an Electric Vehicle","authors":"Adriana Skuza, Rafał Jurecki, Emilia Szumska","doi":"10.26552/com.c.2023.004","DOIUrl":"https://doi.org/10.26552/com.c.2023.004","url":null,"abstract":"Traffic conditions are constantly changing when driving in urban areas. Depending on the hour the vehicle is moving, the drive is more or less smooth. The aim of this study is to determine how the traffic conditions affect the energy consumption of an electric vehicle. Simulations carried out in AVL Cruise software, based on real-world testing, were used to determine this issue. The methodology for conducting the research and performing the simulations is also described. The energy consumption of the vehicle, on each route and during the hours studied, was compared to each other based on the results from the simulation software. The results of the study showed that the influence of traffic conditions on the vehicle energy consumption is significant. Simulations have shown that the need for numerous stops and driving at low speeds requires increased energy consumption.","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135997689","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}
M. Khabiri, Saeed Nemati Pour Ghasem Abadi, Zohreh Ghafoori Fard
{"title":"THE ROLE OF TRANSPORTATION COSTS ON AFFORDABLE HOUSING FOR LOW-INCOME CLASS","authors":"M. Khabiri, Saeed Nemati Pour Ghasem Abadi, Zohreh Ghafoori Fard","doi":"10.26552/com.c.2023.020","DOIUrl":"https://doi.org/10.26552/com.c.2023.020","url":null,"abstract":"","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41683640","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}
V. Sakhno, V. Polyakov, I. Murovanyi, Oleksii Timkov, Liudmyla Mialkovska, Pavlo Popovych(ORCID: 0000-0001-5516-852Х), Liubomyr Poberezhnyi
{"title":"Influence of the Technical Condition of the Running System of Articulated Buses on Stability of Their Straight-Line Motion","authors":"V. Sakhno, V. Polyakov, I. Murovanyi, Oleksii Timkov, Liudmyla Mialkovska, Pavlo Popovych(ORCID: 0000-0001-5516-852Х), Liubomyr Poberezhnyi","doi":"10.26552/com.c.2023.019","DOIUrl":"https://doi.org/10.26552/com.c.2023.019","url":null,"abstract":"","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46070451","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":"Comparison of Operational Costs for Fixed-Route Bus Service and Demand Responsive Transport Systems. The Case of Kosice Region - Slovakia","authors":"Tomáš Štofa, P. Džupka, R. Dráb","doi":"10.26552/com.c.2023.015","DOIUrl":"https://doi.org/10.26552/com.c.2023.015","url":null,"abstract":"","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48651355","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}
Resume The present article portrays the bibliometric analysis of research conducted on E-mobility worldwide. The study aimed to understand research characteristics, evolution, challenges and potential research trends. Research articles published on E-mobility have been compiled from the Scopus database, resulting in 1737 articles published between 2001 and 2021. The software R Studio has been used for subsequent bibliometric analysis. The analysis examines the research trend in the field of E-mobility. In addition, it identifies the most productive contributors in terms of author, country and sources. Thematic analysis has been performed, as well, to reveal E-mobility research trends, including the most influential articles and authors. The study concludes that very few studies have been conducted on E-mobility and that there is much potential in E-mobility. The present paper can help the researcher pave the research path in E-mobility.
{"title":"Review of Global Research on E-Mobility: A Bibliometric Analysis","authors":"Apurvkumar Desai, C. Patel","doi":"10.26552/com.c.2023.016","DOIUrl":"https://doi.org/10.26552/com.c.2023.016","url":null,"abstract":"Resume The present article portrays the bibliometric analysis of research conducted on E-mobility worldwide. The study aimed to understand research characteristics, evolution, challenges and potential research trends. Research articles published on E-mobility have been compiled from the Scopus database, resulting in 1737 articles published between 2001 and 2021. The software R Studio has been used for subsequent bibliometric analysis. The analysis examines the research trend in the field of E-mobility. In addition, it identifies the most productive contributors in terms of author, country and sources. Thematic analysis has been performed, as well, to reveal E-mobility research trends, including the most influential articles and authors. The study concludes that very few studies have been conducted on E-mobility and that there is much potential in E-mobility. The present paper can help the researcher pave the research path in E-mobility.","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49449039","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}
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