Periodica Polytechnica Transportation Engineering最新文献_第2页

Assessing Job Accessibility and Sustainable Mobility among Low-income Groups in Penang, Malaysia 评估马来西亚槟城低收入群体的工作可达性和可持续流动性

Periodica Polytechnica Transportation Engineering Pub Date : 2024-03-07 DOI: 10.3311/pptr.22849

H. Rosli, N. Samat, Mohd Azmeer Abu Bakar

{"title":"Assessing Job Accessibility and Sustainable Mobility among Low-income Groups in Penang, Malaysia","authors":"H. Rosli, N. Samat, Mohd Azmeer Abu Bakar","doi":"10.3311/pptr.22849","DOIUrl":"https://doi.org/10.3311/pptr.22849","url":null,"abstract":"Sustainable mobility emerges as a more viable approach for addressing urban mobility challenges and enhancing overall quality of life. The primary cause of urban mobility issues may be attributed to the urban built environment, wherein various physical features such as buildings, public infrastructure, and transit systems have significantly contributed to the reliance on private vehicles. Hence, this study examines job accessibility and the background of mobility among the low-income groups who are the urban workers in Penang Island, Malaysia to determine the factor of this target group's dominant transport mode choice. Using the quantitative method, this study was conducted using a questionnaire with 306 respondents selected by stratified random sampling based upon a ratio to represent the low-income households in the northeast and southwest districts of Penang. The study revealed that individuals from low-income backgrounds exhibit a significant reliance on privately owned vehicles. Furthermore, individuals in question exhibit a preference for owning and utilising economically viable, temporally expedient modes of transportation that optimise spatial efficiency, such as motorbikes, for their daily commute to their place of employment. Policymakers may take into account the factors of affordability and punctuality when formulating a transport system that is characterised by both cost-effectiveness and efficiency, thereby addressing the mobility requirements of low-income groups.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":"56 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140258660","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

Analysis of Constraints against Efficiency of Seaport-hinterland Logistics in Nigeria 尼日利亚海港-腹地物流效率制约因素分析

Periodica Polytechnica Transportation Engineering Pub Date : 2024-03-05 DOI: 10.3311/pptr.23287

O. O. Adepoju

{"title":"Analysis of Constraints against Efficiency of Seaport-hinterland Logistics in Nigeria","authors":"O. O. Adepoju","doi":"10.3311/pptr.23287","DOIUrl":"https://doi.org/10.3311/pptr.23287","url":null,"abstract":"Having realized that most Nigerian seaports are congested and the problem of moving goods have been difficult, the Federal Government through Bureau of Public Enterprises and Nigerian Shippers’ Council were mandated to identify Inland Container Depots (ICDs) and Container Freight Stations (CFSs) across the country with connectivity to rail transport. Since 2004 to date, these have mostly not been functioning. This paper therefore examined the constraints and possible factors responsible. The Nigerian Ports Authority, Road Haulage Association, Terminal Operators, selected Shipping companies were used as respondents. 34.1% (253) from the population of 743 respondents were sampled with the use of Cochran formula and stratified random sampling technique. Shaphiro Test and multiple regression were used to analyze the constraints against the use of ICDs and CFSs. Principal Component Analysis was used to extract the major factors hindering port-hinterland logistics in Nigeria. It was observed that 50% of general logistics constraints emanated from lack of efficient rail system, enforcement and finance combined. Extracted causative factors against port-hinterland movements of goods are: inadequate terminal capacity, parking and inadequacy of cargo handling facilities. The research concluded that both general constraints and causative factors are to be looked into with stringent policy enforcement.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":"26 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140263821","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

Small Robot Vehicle Developed for Multi-purpose Industrial Use 为多用途工业开发的小型机器人车

Periodica Polytechnica Transportation Engineering Pub Date : 2024-03-05 DOI: 10.3311/pptr.23728

Attila István Lakatos

{"title":"Small Robot Vehicle Developed for Multi-purpose Industrial Use","authors":"Attila István Lakatos","doi":"10.3311/pptr.23728","DOIUrl":"https://doi.org/10.3311/pptr.23728","url":null,"abstract":"The small robotic vehicle presented in this article is a special, multifunctional vehicle that can perform diagnostic tasks in several different areas. Examination of heat release and heat losses, which characterizes the efficiency of processes in many technical areas. A device that penetrates into small spaces may be needed. In this area, an important task is to navigate the device to the right place under trucks and cars to perform thermal camera diagnostics. The examination of excessive heat emission is extremely important to filter out faulty transmission systems, faulty engines, and to detect excessively hot brake drums, which are unfortunately also responsible for causing many serious accidents and fires.The remote-controlled navigation robot with a camera presented in the article is perfectly suited for the above task, as it can also transmit the image of the thermal camera to a remote display. In addition to automotive applications, the device can also be used for other industrial purposes and machine diagnostic tasks. I According to the current European Union building energy regulations, new buildings must have almost zero energy requirements. The so-called thermal bridges must be calculated for both old and new buildings under construction.A useful solution to this problem can be the quick and cost-effective energetic measurement and classification of thermal bridges, factors, and structural elements that cause heat loss. The Heat Spotter robotic vehicle presented and built in the article is suitable for the above tasks, ready to be manufactured and quickly paying for itself.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":"126 41","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140078794","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

Measurement of Accident Risk and a Case Study from Hungary 事故风险测量和匈牙利案例研究

Periodica Polytechnica Transportation Engineering Pub Date : 2024-03-04 DOI: 10.3311/pptr.22731

Viktoria Ötvös, Ádám Török

引用次数: 0

Choosing Routes in Urban Areas that are Robust Against Minor Nonrecurring Traffic Incidents 在城市地区选择可抵御非经常性轻微交通事故的路线

Periodica Polytechnica Transportation Engineering Pub Date : 2024-02-26 DOI: 10.3311/pptr.23792

Z. Fazekas, Mohammed Obaid, Péter Gáspár

{"title":"Choosing Routes in Urban Areas that are Robust Against Minor Nonrecurring Traffic Incidents","authors":"Z. Fazekas, Mohammed Obaid, Péter Gáspár","doi":"10.3311/pptr.23792","DOIUrl":"https://doi.org/10.3311/pptr.23792","url":null,"abstract":"The paper looks at certain vehicle-level re-routing issues within urban road networks, and related network-level traffic management issues. These arise mostly when the traffic along a route of significance is hindered, slowed down, or even blocked because of some – possibly minor – unexpected, nonrecurring traffic incident at a sensitive road location, or road section. Considerations for planning routes in urban areas – routes that are in some sense robust against such incidents – are presented herein. Also, the on–the–spot detection of traffic queues by an ego-vehicle – relying on data streams from on-board visual line-of-sight (LoS) exteroceptive sensors watching, scanning and monitoring the ego-vehicle's road environment, and by some on-board dedicated real-time detection systems processing and analyzing the incoming data streams – is touched upon. However, this traffic congestion avoidance and mitigating approach – effectuated either by individual autonomous vehicles, or by human drivers – presumes availability of alternative routes, which is not the case for a good portion of the route considered. A route planning approach that could be used for routes with such critical sections is proposed and motivated through an example of an urban route of significance.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":"43 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140431120","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

Lead-Free Conductors with a Surface Treatment Ensuring a Low Melting Temperature 表面处理可确保低熔化温度的无铅导体

Periodica Polytechnica Transportation Engineering Pub Date : 2024-02-20 DOI: 10.3311/pptr.22876

A. Mareška, T. Kordová, Martin Havlík Míka

引用次数: 0

Development of High-Speed Railway Network in Europe: A Case Study of Ukraine 欧洲高速铁路网的发展：乌克兰案例研究

Periodica Polytechnica Transportation Engineering Pub Date : 2024-02-20 DOI: 10.3311/pptr.23464

M. Kurhan, S. Fischer, Oleksii Tiutkin, D. Kurhan, N. Hmelevska

{"title":"Development of High-Speed Railway Network in Europe: A Case Study of Ukraine","authors":"M. Kurhan, S. Fischer, Oleksii Tiutkin, D. Kurhan, N. Hmelevska","doi":"10.3311/pptr.23464","DOIUrl":"https://doi.org/10.3311/pptr.23464","url":null,"abstract":"The current task today is the development of theoretical and methodological approaches, as well as practical recommendations for determining the technical feasibility of creating high-speed railway (HSR) lines in the European context. The development of railways in individual countries, followed by the creation of a pan-European high-speed railway network, has raised questions about the compatibility of the technical systems of individual national HSRs. This paper addresses these issues using the example of Ukraine. The research is based on an analysis of scientific developments related to the design of HSR lines and the synthesis of European experience in identifying priority route directions in Ukraine. For comparing various scenarios for the development of railway connections, the authors have developed a forecasting and efficiency assessment model based on the Net Present Value (NPV) indicator. It has been demonstrated that considering the population attracted to HSR and the volume of transit passenger transportation alone is insufficient to achieve the normative investment payback. This situation can only be rectified by implementing mixed traffic involving high-speed passenger trains and accelerated freight trains. However, mixed traffic of passenger and freight trains on high-speed rail lines may face numerous issues and constraints that require careful planning and coordination.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":"218 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140448389","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

Active Displacement Control of Pantograph-catenary System for a Half-body Railway Model 半体铁路模型受电弓-全轮系统的主动位移控制

Periodica Polytechnica Transportation Engineering Pub Date : 2024-02-20 DOI: 10.3311/pptr.23285

Munaliza Ibrahim, Mohd Azman Abdullah, Mohd Hanif Harun, Fathiah Mohamed Jamil, Fauzi Ahmad

{"title":"Active Displacement Control of Pantograph-catenary System for a Half-body Railway Model","authors":"Munaliza Ibrahim, Mohd Azman Abdullah, Mohd Hanif Harun, Fathiah Mohamed Jamil, Fauzi Ahmad","doi":"10.3311/pptr.23285","DOIUrl":"https://doi.org/10.3311/pptr.23285","url":null,"abstract":"The pantograph is an essential component that provides electrical contact between the overhead wires and the electric train. The quality of the current collection in high-speed trains is directly influenced by the mechanical interaction between the pantograph collector head and the overhead contact line. To overcome these challenges and improve pantograph performance, researchers and engineers have explored innovative solutions, including the introduction of active control mechanisms. Excitation by the vehicle is one of the normal disturbances in the dynamic interaction of the pantograph and the overhead line. The vertical effects of vehicle-track vibrations on the interaction between the pantograph and the overhead contact line have not yet been adequately researched. To fill this research gap, this study establishes models for both the pantograph-catenary interaction and the vehicle-track system. In this study, the performance of the modified Skyhook-Proportional-Integral-Derivative (PID) controller was investigated for a half-body of a railway pantograph-catenary system. Track irregularities such as step, sine, and random were applied to perturb the suspension system. The performance of both passive and active systems was investigated by considering the track irregularities as a basis. The root mean square analysis (RMS) found that active displacement control of pantograph-catenary systems for a half-body railway model equipped with modified Skyhook-PID controllers performed better than the passive systems. In summary, the future experimental approach for active half-body railway model could incorporate this simple modification of the Skyhook-PID controller.","PeriodicalId":39536,"journal":{"name":"Periodica Polytechnica Transportation Engineering","volume":"151 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140448437","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

Investigating the Impact of Productivity on Surface Roughness and Dimensional Accuracy in FDM 3D Printing 研究生产率对 FDM 3D 打印表面粗糙度和尺寸精度的影响

Periodica Polytechnica Transportation Engineering Pub Date : 2024-02-12 DOI: 10.3311/pptr.22952

Gábor Kónya

引用次数: 0

Investigating the Impact of Productivity on Surface Roughness and Dimensional Accuracy in FDM 3D Printing 研究生产率对 FDM 3D 打印表面粗糙度和尺寸精度的影响

Periodica Polytechnica Transportation Engineering Pub Date : 2024-02-12 DOI: 10.3311/pptr.22952

Gábor Kónya

引用次数: 0