Scientific Journal of Silesian University of Technology-Series Transport最新文献

SOME DYNAMIC PROCESSES AT LONGITUDINALLY-TRANSVERSE SHIFT OF THE CARGO 货物纵、横移时的一些动态过程

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2023-09-01 DOI: 10.20858/sjsutst.2023.120.12

L. Muradian, Anzhelika Shvets, A. Shvets

{"title":"SOME DYNAMIC PROCESSES AT LONGITUDINALLY-TRANSVERSE SHIFT OF THE CARGO","authors":"L. Muradian, Anzhelika Shvets, A. Shvets","doi":"10.20858/sjsutst.2023.120.12","DOIUrl":"https://doi.org/10.20858/sjsutst.2023.120.12","url":null,"abstract":"The purpose of the work is to study the influence of the longitudinally-transverse shift of the cargo’s center of mass on the dynamic loading of the wagon in order to solve the problem of predicting the dynamics and stability of an asymmetrically loaded railroad vehicle. During the analytical simulation, a multibody model of the spatial oscillations of the wagon was used. The differential equations of wagon oscillations are compiled using the d'Alembert principle, while the wagon is considered as a system with 42 degrees of freedom. The work presents the results of analytical simulation of some dynamic processes of interaction of railroad vehicles with the rails on the example of flat wagons. The results of the analytical simulation are presented, taking into account the speed of movement along the curved sections of the railway track. The proposed multibody model \"heavy cargo – wagon\" makes it possible to analytically determine the dynamic characteristics of the system and ensure the development of such methods of transportation of heavy cargo that meet the requirements of train traffic safety. The application of the obtained results will help improve the running safety of freight wagons and enhance the technical and economic performance of railways.","PeriodicalId":43740,"journal":{"name":"Scientific Journal of Silesian University of Technology-Series Transport","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43775513","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}

引用次数: 0

STATISTICAL ANALYSIS OF JAYWALKING CONFLICTS BY A LIDAR SENSOR 激光雷达传感器对乱穿马路冲突的统计分析

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2023-09-01 DOI: 10.20858/sjsutst.2023.120.2

Alireza Ansariyar, M. Jeihani

{"title":"STATISTICAL ANALYSIS OF JAYWALKING CONFLICTS BY A LIDAR SENSOR","authors":"Alireza Ansariyar, M. Jeihani","doi":"10.20858/sjsutst.2023.120.2","DOIUrl":"https://doi.org/10.20858/sjsutst.2023.120.2","url":null,"abstract":"The light detection and ranging (Lidar) sensor is a remote sensing technology that can be used to monitor pedestrians who cross an intersection outside of a designated crosswalk or crossing area, which is a key safety application of lidar sensors at signalized intersections. Hereupon, the Lidar sensor was installed at the Hillen Rd - E 33rd St. intersection in Baltimore city to collect real-time jaywalkers’ traffic data. In order to propose safety improvement considerations for the pedestrians as one of the most vulnerable road users, the paper aims to investigate the reasons for jaywalking and its potential risks for increasing the frequency and severity of vehicle-pedestrian conflicts. In a three-month time, interval from December 2022 to February 2023, a total of 585 jaywalkers were detected. By developing a generalized linear regression model and using K-means clustering, the highly correlated independent variables to the frequency of jaywalking were recognized, including the speed of jaywalkers, the average PET of vehicle-pedestrians, the frequency of vehicle-pedestrian conflicts, and the weather condition. The volume of vehicles and pedestrians and road infrastructure characteristics such as medians, building entrances, vegetation on medians, and bus/taxi stops were investigated, and the results showed that as the frequency of jaywalking increases, vehicle-pedestrian conflicts will occur more frequently and with greater severity. In addition, jaywalking speed increases the likelihood of severe vehicle-pedestrian conflicts. Also, during cloudy and rainy days, 397 pedestrians were motivated to jaywalk (or 68% of total jaywalkers), making weather a significant factor in the increase in jaywalking.","PeriodicalId":43740,"journal":{"name":"Scientific Journal of Silesian University of Technology-Series Transport","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47705053","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}

引用次数: 4

STUDY OF DRIVERS’ BEHAVIOR IN URBAN ROAD TRAFFIC 城市道路交通中驾驶员行为研究

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2023-09-01 DOI: 10.20858/sjsutst.2023.120.11

Kamil Matras, G. Sierpiński

引用次数: 0

PERSPECTIVES OF MULTIFUNCTIONAL INTEGRATED SUBURBAN-URBAN RAIL TRANSPORT DEVELOPMENT 城郊轨道交通多功能一体化发展展望

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2023-09-01 DOI: 10.20858/sjsutst.2023.120.7.

A. Kagramanian, D. Aulin, Karyna Trubchaninova, J. Caban, A. Voronin, A. Basov

{"title":"PERSPECTIVES OF MULTIFUNCTIONAL INTEGRATED SUBURBAN-URBAN RAIL TRANSPORT DEVELOPMENT","authors":"A. Kagramanian, D. Aulin, Karyna Trubchaninova, J. Caban, A. Voronin, A. Basov","doi":"10.20858/sjsutst.2023.120.7.","DOIUrl":"https://doi.org/10.20858/sjsutst.2023.120.7.","url":null,"abstract":"Main requirements for rolling stock design and organization of the operating system are determined by membership in a certain transportation category for which such a transportation facility is designated. Thus, a specific feature of rolling stock operation is considered to the maximum extent, and functional correspondence with stated tasks is ensured. The significant disadvantage of the existing structure of rolling stock traffic is the necessity of time-space agreements of passenger traffic due to the necessity of shifting different transport types with the minimum time consumption. The solution to such an issue can be found in the development and use of a universal (multifunctional) integrated transport system. The list of issues arising during the creation of a multifunctional transport system can be funnelled into two groups: social and economic and organizational and technical. The first group is social and economic and shall conceptually solve issues of the multifunctional system feasibility for certain urban settlement conditions (conglomerate of urban settlements). The second group consists of organizational and technical issues. This study proposes to eliminate certain material issues in the sphere of suburban and urban traffic by the infrastructure improvement with the significant traffic increase and fluctuations.","PeriodicalId":43740,"journal":{"name":"Scientific Journal of Silesian University of Technology-Series Transport","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42008285","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}

引用次数: 0

EFFICIENCY OF TRAMP FLEET OPERATING UNDER THE CONTRACTS OF AFFREIGHTMENT 根据运输合同运作的不定期船船队的效率

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2023-09-01 DOI: 10.20858/sjsutst.2023.120.9

Y. Koskina, S. Onyshenko, O. Drozhzhyn, Oleksii Melnyk

引用次数: 0

EVALUATION OF THE TECHNOLOGICAL PROCESS OF WAGON PROCESSING AT SHUNTING STATIONS USING THE SIMULATION MODEL 利用仿真模型对调车站货车加工工艺流程进行评价

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2023-09-01 DOI: 10.20858/sjsutst.2023.120.16

E. Szczepański, Piotr Gołębiowski, B. Kondracka

引用次数: 0

PASSENGERS’ SATISFACTION WITH THE LAGOS SHUTTLE TRAIN SERVICES, LAGOS, NIGERIA 尼日利亚拉各斯，乘客对拉各斯穿梭列车服务的满意度

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2023-09-01 DOI: 10.20858/sjsutst.2023.120.14

O. Olojede, Sikiru Akintunde Folorunso, Adewale Sheyi Popoola, Peter Oladeji, Olamide Akintifonbo, Damilare Jeremiah Odeyemi

引用次数: 0

OPTIMAL DOCKING PROBLEM OF UAV AT DETECTED MOVING OBJECT 无人机在检测到运动目标时的最优对接问题

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2023-09-01 DOI: 10.20858/sjsutst.2023.120.13

Lamiya Nabadova

引用次数: 0

PERSPECTIVES OF MULTIFUNCTIONAL INTEGRATED SUBURBAN-URBAN RAIL TRANSPORT DEVELOPMENT 城郊轨道交通多功能一体化发展展望

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2023-09-01 DOI: 10.20858/sjsutst.2023.120.7

Artur KAGRAMANIAN, Dmitriy AULIN, Karyna TRUBCHANINOVA, Jacek CABAN, Anatoly VORONIN, Alexsandr BASOV

{"title":"PERSPECTIVES OF MULTIFUNCTIONAL INTEGRATED SUBURBAN-URBAN RAIL TRANSPORT DEVELOPMENT","authors":"Artur KAGRAMANIAN, Dmitriy AULIN, Karyna TRUBCHANINOVA, Jacek CABAN, Anatoly VORONIN, Alexsandr BASOV","doi":"10.20858/sjsutst.2023.120.7","DOIUrl":"https://doi.org/10.20858/sjsutst.2023.120.7","url":null,"abstract":"Main requirements for rolling stock design and organization of the operating system are determined by membership in a certain transportation category for which such a transportation facility is designated. Thus, a specific feature of rolling stock operation is considered to the maximum extent, and functional correspondence with stated tasks is ensured. The significant disadvantage of the existing structure of rolling stock traffic is the necessity of time-space agreements of passenger traffic due to the necessity of shifting different transport types with the minimum time consumption. The solution to such an issue can be found in the development and use of a universal (multifunctional) integrated transport system. The list of issues arising during the creation of a multifunctional transport system can be funnelled into two groups: social and economic and organizational and technical. The first group is social and economic and shall conceptually solve issues of the multifunctional system feasibility for certain urban settlement conditions (conglomerate of urban settlements). The second group consists of organizational and technical issues. This study proposes to eliminate certain material issues in the sphere of suburban and urban traffic by the infrastructure improvement with the significant traffic increase and fluctuations.","PeriodicalId":43740,"journal":{"name":"Scientific Journal of Silesian University of Technology-Series Transport","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136161375","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}

引用次数: 0

ROAD INFRASTRUCTURE MANAGEMENT - THE PERSPECTIVE OF THE LOCAL ROADS AUTHORITY 道路基础设施管理——地方道路管理部门的视角

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2023-09-01 DOI: 10.20858/sjsutst.2023.120.17

Marcin Świtała

{"title":"ROAD INFRASTRUCTURE MANAGEMENT - THE PERSPECTIVE OF THE LOCAL ROADS AUTHORITY","authors":"Marcin Świtała","doi":"10.20858/sjsutst.2023.120.17","DOIUrl":"https://doi.org/10.20858/sjsutst.2023.120.17","url":null,"abstract":"This paper presents the results of research conducted among 100 local government units performing the duties of road network administrators, i.e., administrators of municipal roads (AMR), county roads (ACR) and those operating within the boundaries of cities with county rights (ACCR). The aim of the research was to identify and assess management problems related to the implementation of statutory measures related to the protection and development of respective road networks. A hypothesis was formulated about the existence of statistically significant differences between the AMR, ACR and ACCR groups, which was verified by quantitative analysis of the data obtained from the online survey. They were analysed and interpreted using the SPSS package and using measures of descriptive statistics, the correlation coefficient and the Kruskal–Wallis test by ranks. The results of the study indicate that the difficulties of providing and maintaining an efficient road network pavement, as well as the challenges of developing draft financing plans for the construction, reconstruction, and rehabilitation of the road network, are currently the main points of focus for all road administrators. The lack of statistical significance of intergroup differences was observed in the vast majority of measurements. The exceptions to this were the differences that occurred in the total number of difficulties reported, which were greater among the members of AMR and ACR than ACCR, as well as the differences related to the implementation of measures undertaken for the maintenance of roadside greenery, which were more onerous for ACR.","PeriodicalId":43740,"journal":{"name":"Scientific Journal of Silesian University of Technology-Series Transport","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45405790","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}

引用次数: 1