{"title":"Reliability Analysis of Benchmark Water Distribution System","authors":"Suja S Nair, P. L. Meyyappan","doi":"10.26552/com.c.2024.005","DOIUrl":"https://doi.org/10.26552/com.c.2024.005","url":null,"abstract":"","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":"14 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138602871","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}
D. Ruban, O. Lanets, L. Kraynyk, Stepan Kovalyshyn, H. Ruban, R. Madleňák, M. Maciaszczyk
{"title":"Predictive Assessment of Bus Body Life in the Matlab Simulink Software Environment","authors":"D. Ruban, O. Lanets, L. Kraynyk, Stepan Kovalyshyn, H. Ruban, R. Madleňák, M. Maciaszczyk","doi":"10.26552/com.c.2024.003","DOIUrl":"https://doi.org/10.26552/com.c.2024.003","url":null,"abstract":"","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":" 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138615680","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}
Sergii Panchenko, J. Gerlici, Alyona Lovska, Glib Vatulia, Vasyl Ravlyuk, A. Rybin
{"title":"Method for Determining the Factor of Dual Wedge-Shaped Wear of Composite Brake Pads for Freight Wagons","authors":"Sergii Panchenko, J. Gerlici, Alyona Lovska, Glib Vatulia, Vasyl Ravlyuk, A. Rybin","doi":"10.26552/com.c.2024.006","DOIUrl":"https://doi.org/10.26552/com.c.2024.006","url":null,"abstract":"","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139199614","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":"Analysis of the Technical Condition of the Road Infrastructure of the Greater Poland Voivodship from the Aspect of Road Traffic Safety in 2010-2021","authors":"Piotr Gorzelańczyk, Sara Szoja","doi":"10.26552/com.c.2024.004","DOIUrl":"https://doi.org/10.26552/com.c.2024.004","url":null,"abstract":"","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139229626","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}
Unfortunately, nowadays, choosing the right child seat is a real problem, especially for new parents. When choosing a child seat, parents have to consider many factors. These include the method of mounting the seat, the mass of the seat, compatibility with a pram and information about crash tests and approvals. The main purpose of the article is to draw attention to the problem of choosing a safe child seat and the purchasing preferences of parents or legal guardians who decide to buy a child seat. For this purpose, a survey was conducted on a group of 950 people with children. The conducted research has shown that the main parameter influencing the choice of a child seat is the price for men and the social opinion and mass of the child seat for women. In addition, research has shown that most people decide to buy a child seat based on the installation system using a standard ISOFIX base.
{"title":"Impact of Consumer Value on the Selection of a Safe Child Seat","authors":"Damian Frej, Paweł Grabski","doi":"10.26552/com.c.2024.002","DOIUrl":"https://doi.org/10.26552/com.c.2024.002","url":null,"abstract":"Unfortunately, nowadays, choosing the right child seat is a real problem, especially for new parents. When choosing a child seat, parents have to consider many factors. These include the method of mounting the seat, the mass of the seat, compatibility with a pram and information about crash tests and approvals. The main purpose of the article is to draw attention to the problem of choosing a safe child seat and the purchasing preferences of parents or legal guardians who decide to buy a child seat. For this purpose, a survey was conducted on a group of 950 people with children. The conducted research has shown that the main parameter influencing the choice of a child seat is the price for men and the social opinion and mass of the child seat for women. In addition, research has shown that most people decide to buy a child seat based on the installation system using a standard ISOFIX base.","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":" 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135241704","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":"Increasing the Reliability of Water Transport via the Usage of Modified Epoxy Coatings","authors":"Andrii Buketov, Oleg Lyashuk, Oleksandr Sapronov, Sergii Smetankin, Mykhailo Babiy, Oleg Bezbach, Oleg Tson, Vitalii Levytsky, Raisa Chornii","doi":"10.26552/com.c.2024.001","DOIUrl":"https://doi.org/10.26552/com.c.2024.001","url":null,"abstract":"","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":"61 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136316590","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}
Currently, various systems and devices for on-board equipment of modern aircraft are undergoing extensive transformations, particularly in terms of powering electrified aircraft. The main goal of authors of this article was to conduct an analysis of the selected electrified aircraft architecture in the scope of the HVDC system, among architectures in the 540 V voltage range (± 270 VDC) and 350 V, creating a mathematical model and making the necessary tests and simulation studies on the developed model. In the above aspect, article presents selected test results of a proposed system consisting of aircraft generators with changing speeds, which power the bidirectional transistor converters operating in parallel. On the other hand, the energy, generated by generators equipped with a rectifier systems feeds a 0.4/15 kV booster transformer operating at idle. In the final part of the work, based on simulation studies (analysis, mathematical model, tests), important insights are presented and practical conclusions are formulated.
{"title":"The Architecture of the on-Board Power System of a More Electric Aircraft","authors":"Lucjan Setlak, Rafał Kowalik","doi":"10.26552/com.c.2023.073","DOIUrl":"https://doi.org/10.26552/com.c.2023.073","url":null,"abstract":"Currently, various systems and devices for on-board equipment of modern aircraft are undergoing extensive transformations, particularly in terms of powering electrified aircraft. The main goal of authors of this article was to conduct an analysis of the selected electrified aircraft architecture in the scope of the HVDC system, among architectures in the 540 V voltage range (± 270 VDC) and 350 V, creating a mathematical model and making the necessary tests and simulation studies on the developed model. In the above aspect, article presents selected test results of a proposed system consisting of aircraft generators with changing speeds, which power the bidirectional transistor converters operating in parallel. On the other hand, the energy, generated by generators equipped with a rectifier systems feeds a 0.4/15 kV booster transformer operating at idle. In the final part of the work, based on simulation studies (analysis, mathematical model, tests), important insights are presented and practical conclusions are formulated.","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135368311","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}
Satya Ranjan Samal, Malaya Mohanty, Piotr Gorzelańczyk
Traffic congestion is a pervasive issue that affects urban areas worldwide. This study investigates congestion on urban roads in an Indian smart city. Video graphic technique was employed to collect data across various traffic volumes. Travel time for different vehicle categories was estimated, and the travel time reliability congestion index was assessed. Multiple linear regression modelling was utilized to assess the attributes influencing congestion. Traffic signal synchronization and enforcement of traffic regulations, decentralization of important offices, and regulating roadside activities received strong recommendations from the majority of inhabitants. For improving the functionality and accessibility, related to the urban road network, these attributes should be enforced. The research intended to assess the functional effectiveness of urban roads using travel time reliability measures.
{"title":"Exploring the Traffic Congestion and Improving Travel Time Reliability Measures in Heterogeneous Traffic Environments: A Focus on Developing Countries","authors":"Satya Ranjan Samal, Malaya Mohanty, Piotr Gorzelańczyk","doi":"10.26552/com.c.2023.074","DOIUrl":"https://doi.org/10.26552/com.c.2023.074","url":null,"abstract":"Traffic congestion is a pervasive issue that affects urban areas worldwide. This study investigates congestion on urban roads in an Indian smart city. Video graphic technique was employed to collect data across various traffic volumes. Travel time for different vehicle categories was estimated, and the travel time reliability congestion index was assessed. Multiple linear regression modelling was utilized to assess the attributes influencing congestion. Traffic signal synchronization and enforcement of traffic regulations, decentralization of important offices, and regulating roadside activities received strong recommendations from the majority of inhabitants. For improving the functionality and accessibility, related to the urban road network, these attributes should be enforced. The research intended to assess the functional effectiveness of urban roads using travel time reliability measures.","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135996132","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}
Ladislav Jánošík, Izabela Šudrychová, Ivana Jánošíková, Marek Cochlar, Martin Tomášek
The Fire Rescue Service of the Czech Republic is a security force whose primary task is to protect the lives and health of the population from fire and other emergency and critical situations. Members of the Fire Rescue Service of the Czech Republic need special firefighting appliances for performing these public services. The first-response firefighting vehicles are professionally denominated as firefighting vehicles. These vehicles are used to transport units of firefighters, fire extinguishers and a technical equipment to a scene of an intervention. Traffic accidents occur occasionally while an emergency drive. Traffic accidents always have a negative economic impact on a fire protection unit and can endanger its operational capacity in the short term. This paper summarizes results of a traffic accidents analysis of a major group of emergency firefighting vehicles - water tenders.
{"title":"Trends in Traffic Accidents of Firefighting Vehicles and Their Evaluation","authors":"Ladislav Jánošík, Izabela Šudrychová, Ivana Jánošíková, Marek Cochlar, Martin Tomášek","doi":"10.26552/com.c.2023.075","DOIUrl":"https://doi.org/10.26552/com.c.2023.075","url":null,"abstract":"The Fire Rescue Service of the Czech Republic is a security force whose primary task is to protect the lives and health of the population from fire and other emergency and critical situations. Members of the Fire Rescue Service of the Czech Republic need special firefighting appliances for performing these public services. The first-response firefighting vehicles are professionally denominated as firefighting vehicles. These vehicles are used to transport units of firefighters, fire extinguishers and a technical equipment to a scene of an intervention. Traffic accidents occur occasionally while an emergency drive. Traffic accidents always have a negative economic impact on a fire protection unit and can endanger its operational capacity in the short term. This paper summarizes results of a traffic accidents analysis of a major group of emergency firefighting vehicles - water tenders.","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135996140","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}
Jan Chocholáč, Tomáš Kučera, Dana Sommerauerová, Roman Hruška, Stanislav Machalík, Jiří Křupka, Jaroslava Hyršlová
The paper presents a systematic quantitative and qualitative literature review and classification of the last decades resources for a comprehensive and coherent view of smart city and urban logistics research trends and challenges. The review fully respects a six-step systematic literature review guideline and covers ninety-nine peer-reviewed articles from Web of Science Core Collection database.
本文对过去几十年的资源进行了系统的定量和定性文献回顾和分类，以全面连贯地了解智慧城市和城市物流研究的趋势和挑战。这篇综述完全遵循六步系统文献综述指南，涵盖了Web of Science Core Collection数据库中99篇同行评议的文章。
{"title":"Smart City and Urban Logistics - Research Trends and Challenges: Systematic Literature Review","authors":"Jan Chocholáč, Tomáš Kučera, Dana Sommerauerová, Roman Hruška, Stanislav Machalík, Jiří Křupka, Jaroslava Hyršlová","doi":"10.26552/com.c.2023.076","DOIUrl":"https://doi.org/10.26552/com.c.2023.076","url":null,"abstract":"The paper presents a systematic quantitative and qualitative literature review and classification of the last decades resources for a comprehensive and coherent view of smart city and urban logistics research trends and challenges. The review fully respects a six-step systematic literature review guideline and covers ninety-nine peer-reviewed articles from Web of Science Core Collection database.","PeriodicalId":10588,"journal":{"name":"Communications - Scientific letters of the University of Zilina","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135993845","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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