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

RADAR-BASED DETECTION AND RECOGNITION METHODOLOGY OF AUTONOMOUS SURFACE VEHICLES IN CHALLENGING MARINE ENVIRONMENT 在具有挑战性的海洋环境中基于雷达的自主水面飞行器探测和识别方法

Scientific Journal of Silesian University of Technology. Series Transport Pub Date : 2024-03-01 DOI: 10.20858/sjsutst.2024.122.7

Dmytro Korban, Oleksiy Melnyk, O.А. Onishchenko, Serhii Kurdiuk, Valerii Shevchenko, T. Obniavko

{"title":"RADAR-BASED DETECTION AND RECOGNITION METHODOLOGY OF AUTONOMOUS SURFACE VEHICLES IN CHALLENGING MARINE ENVIRONMENT","authors":"Dmytro Korban, Oleksiy Melnyk, O.А. Onishchenko, Serhii Kurdiuk, Valerii Shevchenko, T. Obniavko","doi":"10.20858/sjsutst.2024.122.7","DOIUrl":"https://doi.org/10.20858/sjsutst.2024.122.7","url":null,"abstract":"This paper presents a methodology that combines radar polarization selection and recognition techniques for navigating objects in atmospheric formations, with a special focus on unmanned surface vehicles (ASVs). The proposed technique utilizes the concept of an energy dissipation matrix to represent these objects as characteristic “shiny dots”. By strategically changing the polarization of the emitted and received electromagnetic waves, the resulting echo energy dissipation matrix is determined. This approach allows the formation of an intensity-based repository of atmospheric formations, which gives SRPC a complete set of tools to account for atmospheric conditions in radar identification of remote objects, including ASVs. The practical application of this technique extends to the improvement of a distinct class of shipborne radar systems optimized for ASVs and their specific navigation requirements. Ultimately, this technology bridges the gap between advanced radar technology and the emerging field of unmanned ground vehicles, providing safer and more proficient navigation in challenging weather conditions.","PeriodicalId":517903,"journal":{"name":"Scientific Journal of Silesian University of Technology. Series Transport","volume":"20 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140407872","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

ENHANCING TRAFFIC SAFETY: A COMPREHENSIVE APPROACH THROUGH REAL-TIME DATA AND INTELLIGENT TRANSPORTATION SYSTEMS 加强交通安全：通过实时数据和智能交通系统的综合方法

Scientific Journal of Silesian University of Technology. Series Transport Pub Date : 2024-03-01 DOI: 10.20858/sjsutst.2024.122.8

K. Le

引用次数: 0

PROBLEMS OF WEAR OF THE CHAINS USED IN MINE SCRAPER CONVEYORS, CAUSED BY FRICTION AND CORROSION 矿用刮板输送机链条因摩擦和腐蚀造成的磨损问题

Scientific Journal of Silesian University of Technology. Series Transport Pub Date : 2024-03-01 DOI: 10.20858/sjsutst.2024.122.16

Andrzej Norbert Wieczorek, Mateusz Wójcicki, Marek Kalita, Richard Kandzia

引用次数: 0

DESIGNING OF NOISE POLLUTION MEASURES FOR A MILITARY AIRFIELD 为军用机场设计噪声污染措施

Scientific Journal of Silesian University of Technology. Series Transport Pub Date : 2024-03-01 DOI: 10.20858/sjsutst.2024.122.5

Tomas Hoika, Z. Korecki

{"title":"DESIGNING OF NOISE POLLUTION MEASURES FOR A MILITARY AIRFIELD","authors":"Tomas Hoika, Z. Korecki","doi":"10.20858/sjsutst.2024.122.5","DOIUrl":"https://doi.org/10.20858/sjsutst.2024.122.5","url":null,"abstract":"This article discusses the possibilities of reducing noise pollution in the vicinity of a selected airport, with an emphasis on practical measures. The proposed procedures, which are routinely employed at commercial airports, would be ineffective or financially unsustainable under the circumstances of the military airports. The objective at military airports is not to maximise capacity, as at civil airports, where the desire to increase capacity is primarily related to profit. The primary objective for military airports is to perform defined tasks, which may include pilot training, search and rescue exercises and combat training. The main measures proposed to reduce noise pollution in the vicinity of the villages are changes in departure and arrival routes, the splitting of night operations into two parts and the introduction of a new article in the AIP and Airport Regulations prohibiting air operations over and in close proximity to the villages nearby. Finally, it is stressed that a significant reduction in noise will only be possible with the support of changes in legislation or above-standard financial investment by the airport operator.","PeriodicalId":517903,"journal":{"name":"Scientific Journal of Silesian University of Technology. Series Transport","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140398981","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

ARTIFICIAL INTELLIGENCE AS A BASIC PROBLEM WHEN IMPLEMENTING AUTONOMOUS VEHICLE TECHNOLOGY IN EVERYDAY LIFE 在日常生活中实施自动驾驶汽车技术时，人工智能是一个基本问题

Scientific Journal of Silesian University of Technology. Series Transport Pub Date : 2024-03-01 DOI: 10.20858/sjsutst.2024.122.3

Piotr Czech

引用次数: 0

THE PREFERENCES OF CHOOSING TAXI-HAILING MODE ATTRIBUTES THROUGH THE BWS-CASE 1 通过 BWS 选择打车模式属性的偏好--案例 1

Scientific Journal of Silesian University of Technology. Series Transport Pub Date : 2024-03-01 DOI: 10.20858/sjsutst.2024.122.11

Mohsen MAKAREMI-SHARIFI, A. Rassafi

{"title":"THE PREFERENCES OF CHOOSING TAXI-HAILING MODE ATTRIBUTES THROUGH THE BWS-CASE 1","authors":"Mohsen MAKAREMI-SHARIFI, A. Rassafi","doi":"10.20858/sjsutst.2024.122.11","DOIUrl":"https://doi.org/10.20858/sjsutst.2024.122.11","url":null,"abstract":"With the widespread use of the Internet in everyday life, new businesses have emerged, causing significant changes in the market, while some traditional businesses were marginalized. One of the emerging businesses is taxi-hailing, which has gained popularity among the public. This study examines ten attributes of taxi-hailing and asks individuals about their preferences for these attributes through a questionnaire. Unlike the traditional approach of dealing with discrete choice models, which focuses on choosing the best (most important) alternative only, the role of the worst (least important) alternative is also considered in this type of modelling. The present study utilizes case 1 (out of the three available cases) of this scaling method, called “best-worst”, which focuses on attributes. Each questionnaire includes 12 questions about taxi-hailing attributes, where respondents have to state their preference in selecting the best and the worst ones. The results indicate that security and reassurance are the most crucial attributes when deciding this transportation mode, followed by accessibility. Compliance with health issues and social distancing ranked as the least significant attribute.","PeriodicalId":517903,"journal":{"name":"Scientific Journal of Silesian University of Technology. Series Transport","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140401140","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

CARGO TRANSPORT ON THE EXAMPLE OF A SELECTED MODE OF TRANSPORT IN POLAND 波兰选定运输方式的货物运输范例

Scientific Journal of Silesian University of Technology. Series Transport Pub Date : 2024-03-01 DOI: 10.20858/sjsutst.2024.122.10

Elżbieta Macioszek

引用次数: 0

LOGISTICS PLANNING AS AN IMPORTANT ELEMENT OF STRATEGIC DECISIONS IN PRODUCTION MANAGEMENT IN THE COMPANY – CASE STUDY 物流规划是公司生产管理战略决策的重要组成部分 - 案例研究

Scientific Journal of Silesian University of Technology. Series Transport Pub Date : 2024-03-01 DOI: 10.20858/sjsutst.2024.122.9

Z. Łukasik, A. KUŚMIŃSKA-FIJAŁKOWSKA, J. Kozyra, S. Olszańska, Mateusz Roman

引用次数: 0

TRAFFIC CONTROL AT PEDESTRIAN PRIORITY CROSSINGS WITH GUARANTEED LANE THROUGHPUT CAPACITY AS EXEMPLIFIED BY THE LEGAL REGULATIONS APPLICABLE IN POLAND 以波兰适用的法律规定为例，在保证车道通行能力的行人优先过街通道上实行交通管制

Scientific Journal of Silesian University of Technology. Series Transport Pub Date : 2024-03-01 DOI: 10.20858/sjsutst.2024.122.6

Damian Iwanowicz

{"title":"TRAFFIC CONTROL AT PEDESTRIAN PRIORITY CROSSINGS WITH GUARANTEED LANE THROUGHPUT CAPACITY AS EXEMPLIFIED BY THE LEGAL REGULATIONS APPLICABLE IN POLAND","authors":"Damian Iwanowicz","doi":"10.20858/sjsutst.2024.122.6","DOIUrl":"https://doi.org/10.20858/sjsutst.2024.122.6","url":null,"abstract":"The article describes the problem of excessive traffic concentration at signalized pedestrian crossings. The main drawback of such crossings is the inappropriate duration of green signals for vehicles. Too long green times for vehicular traffic significantly increase time lost by pedestrians, while too short ones cause short-term congestion, resulting in long queues of vehicles and a deteriorated level of service. The negative effects of both of these situations also include dangerous behavior of road users, such as red light running or crossing. Recent (June 2021) changes in the road traffic law in Poland have privileged unprotected road users at pedestrian crossings. New models and technical and design standards proposed in this country (March 2021) recommend the installation of pedestrian priority crossings at particularly dangerous spots and in urban areas with a high proportion of pedestrian traffic. All this is done mainly for traffic-calming purposes. However, previously these measures were not a common practice in Poland. Therefore, the objective of this article was to develop a simple method of green signal timing, ensuring, firstly, priority to pedestrian traffic at such places, and, secondly, sustained capacity of vehicular traffic lanes. The developed models are practical, universal and easy to adapt in other countries. They ensure a very good or good quality of vehicle traffic service, with average lost time not exceeding 25 s in a vast majority of analyzed traffic level cases. The article also describes a traffic control algorithm dependent on traffic detection.","PeriodicalId":517903,"journal":{"name":"Scientific Journal of Silesian University of Technology. Series Transport","volume":"91 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140405792","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

STRESSES IN COMPOSITE PLATES WITH RIVETED BARS USED FOR AIRCRAFT CONSTRUCTION 飞机制造中铆接杆复合板的应力

Scientific Journal of Silesian University of Technology. Series Transport Pub Date : 2024-03-01 DOI: 10.20858/sjsutst.2024.122.12

Marta Maksymovych, Maczej Dutkievicz, Olesia Maksymovych

{"title":"STRESSES IN COMPOSITE PLATES WITH RIVETED BARS USED FOR AIRCRAFT CONSTRUCTION","authors":"Marta Maksymovych, Maczej Dutkievicz, Olesia Maksymovych","doi":"10.20858/sjsutst.2024.122.12","DOIUrl":"https://doi.org/10.20858/sjsutst.2024.122.12","url":null,"abstract":"Reinforcement of plates with rod systems is widely used in engineering, especially in aircraft construction. For example, An-178 aircraft. Removable panels on the lower surface of the wing half, located between the rear spar and the flaps. The method of calculating stresses and deformations in composite plates reinforced with rods is developed in the work. It is assumed that the rod is elastic, attached with rivets. Rivets were considered as rigid inclusions to which unknown forces were applied. These forces were determined from the condition of compatibility of plate and rod deformations. The singular integral equations' method was used to determine stresses and strains in the plate. Integral equations were solved numerically and reduced to a system of algebraic equations. To obtain the forces and moments acting on the rivets, the equations of equilibrium of the rivets and the conditions that ensure the same displacements between the rivets in the plate and in the rods are added to these equations. Examples of calculating stresses near circular and elliptical rivets, magnitudes of forces acting on rivets depending on the rigidity of the rods are given. The reduction of the stress concentration near the elliptical hole, which is placed between two rods, was studied.","PeriodicalId":517903,"journal":{"name":"Scientific Journal of Silesian University of Technology. Series Transport","volume":"17 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140406556","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