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DEVELOPMENT OF THE TRAVEL SATISFACTION SCALE (TSS) FOR THE ASSESSMENT OF COMMUTERS’ SATISFACTION IN PUBLIC TRANSPORT: EVIDENCE FROM DELHI METRO (INDIA) 用于评估通勤者对公共交通满意度的出行满意度量表的开发:来自印度德里地铁的证据
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2022-12-01 DOI: 10.20858/sjsutst.2022.117.16
Sachin V. Solanki, Sanu Meena, Umesh Kumar
The Travel Satisfaction Scale (TSS) was created to gauge public opinion on Delhi Metro travel. It has two affective dimensions and one cognitive dimension. This study leverages data from the Delhi Metro commuter trips to undertake new tests because there has been little research on its reliability and structure in the past. Differences in the TSS's reliability and structure – notably for the Delhi Metro and the demographics of the region – are also considered. Finally, the outcomes of this study imply that a single dimension of the affective dimension, rather than the two sub-dimensions, provides a better fit for the Delhi Metro, as well as other public transportation infrastructures in developing countries like India. Individual objects do not load on the two emotional dimensions as intended in a three-dimensional structure, which is more suited for public transportation. Two of the scale's elements – enthusiastic/bored and relaxed/hurried – were associated with the other items in a previous study differing from ours. Researchers should adapt the structure of the TSS in the future by adding or replacing some items with alternate options, which will make it easier to collect data and reduce the burden on the respondent, as well as increase the reliability of the data while maintaining the TSS's consistency and balance.
创建出行满意度量表(TSS)是为了衡量公众对德里地铁出行的看法。它有两个情感维度和一个认知维度。这项研究利用德里地铁通勤行程的数据进行了新的测试,因为过去很少对其可靠性和结构进行研究。TSS的可靠性和结构差异也被考虑在内,尤其是德里地铁和该地区的人口统计数据。最后,这项研究的结果表明,情感维度的单一维度,而不是两个子维度,更适合德里地铁以及印度等发展中国家的其他公共交通基础设施。在三维结构中,单个物体不会像预期的那样加载在两个情感维度上,这更适合公共交通。该量表的两个元素——热情/无聊和放松/匆忙——与之前一项与我们不同的研究中的其他项目有关。研究人员应在未来调整TSS的结构,增加或用替代选项替换一些项目,这将使数据收集更容易,减轻受访者的负担,并在保持TSS的一致性和平衡的同时提高数据的可靠性。
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引用次数: 0
MIG WELDING OF AUSTENITIC 316L STEEL USED IN MEANS OF TRANSPORT 运输工具用奥氏体316L钢的MIG焊接
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2022-09-01 DOI: 10.20858/sjsutst.2022.116.16
B. Szczucka-Lasota, T. Wȩgrzyn
The austenitic 316L steel (1.4401) is an important stainless material used to build various means of transport. Austenitic steel has high resistance to atmospheric corrosion. The austenitic steel is treated as a good weldable material, although cracks are possible. This paper analyses the influence of various MIG welding parameters on the creation of correct joints used in the stainless steel structures of mobile platforms elements, as an example of welding structures, in various means of transport. Various tests verifying the mechanical properties of MIG welds, including non-destructive tests, tensile strength and hardness tests, were carried out. This article aims to show how important and complex the task is to select the correct welding parameters for elements of means of transport made of austenitic steel on the example of elements of mobile platforms.
奥氏体316L钢(1.4401)是一种重要的不锈钢材料,用于建造各种运输工具。奥氏体钢具有很高的耐大气腐蚀性。奥氏体钢被视为一种良好的可焊接材料,尽管可能出现裂纹。本文以各种运输方式中的焊接结构为例,分析了各种MIG焊接参数对移动平台元件不锈钢结构中正确接头的影响。对MIG焊缝的机械性能进行了各种测试,包括无损检测、抗拉强度和硬度测试。本文旨在以移动平台元件为例,说明为奥氏体钢制成的运输工具元件选择正确的焊接参数是多么重要和复杂。
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引用次数: 0
TECHNICAL AND OPERATIONAL MEASURES TO REDUCE GREENHOUSE GAS EMISSIONS AND IMPROVE THE ENVIRONMENTAL AND ENERGY EFFICIENCY OF SHIPS 减少温室气体排放、提高船舶环境和能源效率的技术和操作措施
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2022-09-01 DOI: 10.20858/sjsutst.2022.116.14
O. Onishchenko, V. Golikov, O. Melnyk, S. Onyshchenko, Kostiantyn Obertiur
Every year, the dynamics of implementation of projects aimed at improving the efficiency of energy use is gradually increasing at different levels and in different industries. It has spread in the areas of design, modernization and reconstruction of energy-efficient buildings and structures, design and construction of elements of industrial infrastructure, and technological production processes. Introduction of such projects is a priority for enterprises and companies of various types of economic activity. Thus, the leading industries develop strategies to improve environmental safety and energy efficiency - shipping is no exception, where the process of improving energy efficiency is carried out through various mechanisms, ultimately leading to a reduction in emissions of pollutants, but having a negative impact on the performance of the commercial operation of the ship. Problems of ensuring energy efficiency along with increasing requirements for environmental safety of transport and strengthening the responsibility of shipowners become the focus of research of modern theory and practice of operation of means of maritime transport. The issues of improvement of universal principles of energy efficiency within individual shipping companies and development of tools for economic analysis of energy efficiency of own fleet, search for new ways of forming professional competencies of ship crew members in the field of energy efficiency continue to be topical as well.
每年,旨在提高能源使用效率的项目在不同级别和不同行业的实施力度都在逐渐增加。它已扩展到节能建筑和结构的设计、现代化和重建、工业基础设施要素的设计和施工以及技术生产过程等领域。引进此类项目是各类经济活动的企业和公司的优先事项。因此,主导产业制定了提高环境安全和能源效率的战略——航运也不例外,通过各种机制来提高能源效率,最终减少污染物排放,但对船舶的商业运营产生负面影响。随着对运输环境安全要求的提高和船东责任的强化,确保能源效率成为现代海上运输工具运营理论和实践研究的焦点。在各个航运公司内部改进能源效率的普遍原则,开发自己船队能源效率的经济分析工具,寻找船员在能源效率领域形成专业能力的新方法,这些问题仍然是热门话题。
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引用次数: 2
ANALYSIS OF THE DEVELOPMENT OF E-COMMERCE IN POLAND FROM 2010-2020 AND ITS IMPACT ON THE TRANSPORT SECTOR 2010-2020年波兰电子商务发展及其对运输业的影响分析
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2022-09-01 DOI: 10.20858/sjsutst.2022.116.12
E. Macioszek, I. Jurdana
Trade with the use of internet technology (e-commerce) provides new opportunities for expansion on a larger scale for already existing business entities and offers prospects for rapid development for new companies. This is possible due to the low entry barriers that encourage the sale of products. Online retail trade is gaining increased popularity in Poland. This article aims to analyze e-commerce development in Poland from 2010-2020. This analysis is based on data from the Central Statistical Office. The results of the analysis clearly show that the share of purchases made via the internet has been systematically growing from year to year. This growth contributes to the faster development of transport logistics, as well as the transport of the goods itself.
利用互联网技术进行贸易(电子商务)为现有的商业实体提供了扩大规模的新机会,并为新公司提供了快速发展的前景。这是可能的,因为较低的进入壁垒鼓励了产品的销售。网上零售贸易在波兰越来越受欢迎。本文旨在分析2010-2020年波兰电子商务的发展。这一分析基于中央统计局的数据。分析结果清楚地表明,通过互联网进行的购物份额逐年系统地增长。这种增长有助于运输物流的更快发展,以及货物本身的运输。
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引用次数: 0
THE EFFECT OF TRANSPORTATION FACILITIES ON MATERNAL MORTALITY: THE GUEST MOTHERHOOD PROJECT (GMP) IN TURKEY 交通设施对产妇死亡率的影响:土耳其的客母项目
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2022-09-01 DOI: 10.20858/sjsutst.2022.116.3
M. Aydın
In undeveloped and developing countries, maternal mortality is an important problem in public health. High maternal deaths observed in some regions of Turkey are related to inequities in reaching health services (low transport facilities). To prevent maternal mortality, pregnant women should have access to health services for professional care before, during, and after childbirth. In Turkey, most maternal deaths are related to socio-economic factors, equity issues, health services and transportation facilities. Especially, transportation facilities to health centers play an important role in preventing maternal deaths. Thus, to prevent the negative effect of the winter season and adverse transportation facilities on maternal mortality, the Turkey Ministry of Health (MoH), aiming to reduce the maternal mortality ratio (MMR) in rural areas, initiated the “Guest Motherhood Project (GMP)” to cover all of its urban and rural areas. In this project, health services for pregnant women in risky regions were restructured. In the scope of the project, access problems to health centers were eliminated and rapid access to rural areas and challenging territories of Turkey were provided. Current maternal mortality statistics show that GMP is yielding good results and high quality delivery services at all health centers in every region of the country despite the regional disparities.
在不发达国家和发展中国家,产妇死亡率是公共卫生中的一个重要问题。土耳其一些地区产妇死亡率高,与获得保健服务方面的不平等(交通设施落后)有关。为防止孕产妇死亡,孕妇应在分娩前、分娩中和分娩后获得专业保健服务。在土耳其,大多数产妇死亡与社会经济因素、公平问题、保健服务和交通设施有关。特别是,前往保健中心的交通设施在预防产妇死亡方面发挥着重要作用。因此,为了防止冬季和不利的交通设施对孕产妇死亡率的负面影响,土耳其卫生部(MoH)旨在降低农村地区的孕产妇死亡率,启动了覆盖所有城市和农村地区的"客母项目" (GMP)。在这个项目中,调整了对危险地区孕妇的保健服务。在项目范围内,消除了进入保健中心的问题,并提供了快速进入土耳其农村地区和困难地区的服务。目前的孕产妇死亡率统计数据表明,尽管存在地区差异,但全国每个地区的所有保健中心都取得了良好的效果和高质量的分娩服务。
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引用次数: 0
APPLICATION OF THE BIOMASS AS A CONSTRUCTION MATERIAL OF THE OIL FILTER AND ITS INFLUENCE ON THE PERFORMANCE AND EMISSION CHARACTERISTICS 生物质作为机油滤清器结构材料的应用及其对性能和排放特性的影响
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2022-09-01 DOI: 10.20858/sjsutst.2022.116.15
M. Puškár, P. Tarbajovský, M. Šoltésová
Engine emissions can be reduced by performing suitable modifications to the oil filter. Biomass medium served as the replacement for the standard paper fibres, which are used in common oil filters. The experimental analysis of 4 emission elements showed a moderate increase in the case of 2 emission characteristics, whereby a 10% increase in monoxide was present, and also, an increase of 2.5% of nitrogen oxides was observed. Further, there was a significant reduction of 2 other emission elements, namely the unburned hydrocarbons decreased by 61%, and the amount of particulate matter was reduced by 18%. Measured engine power increased by 1.2% using the modified oil filter, which proves the success of this filter. There was a decrease in oil pressure as well, the value dropped by 0.5 bar during the whole period of the measuring process.
可以通过对机油滤清器进行适当的改装来减少发动机排放。生物质介质取代了普通滤油器中使用的标准纸纤维。4种排放元素的实验分析显示,在2种排放特性的情况下,一氧化碳增加了10%,氮氧化物也增加了2.5%。此外,其他2种排放元素显著减少,即未燃烧的碳氢化合物减少了61%,颗粒物的量减少了18%。使用改进的机油滤清器测量发动机功率增加了1.2%,这证明了该滤清器的成功。油压也有所下降,在整个测量过程中,该值下降了0.5巴。
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引用次数: 0
DIAGNOSING FAULTS IN THE TIMING SYSTEM OF A PASSENGER CAR SPARK IGNITION ENGINE USING THE BAYES CLASSIFIER AND ENTROPY OF VIBRATION SIGNALS 基于贝叶斯分类器和振动信号熵的乘用车火花点火发动机正时故障诊断
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2022-09-01 DOI: 10.20858/sjsutst.2022.116.5
P. Czech
Today's systems for diagnosing the technical condition of machines, including vehicles, use very advanced methods of acquiring and processing input data. Presently, work is being conducted globally to solve related problems. At the moment, it is not yet possible to create a single procedure that would enable the construction of a properly functioning diagnostic system, regardless of the selected object to be diagnosed. Hence, there is a need to conduct further research into the possibility of using already developed methods, as well as their modification to other diagnostic cases. This article presents the results of research related to the use of the Bayes classifier for diagnosing the technical condition of passenger car engine components. Damage to the exhaust valve of a spark ignition engine was diagnosed. The source of information on the technical condition was vibration signals recorded at various measuring points and under different operating conditions of the car. To describe the nature of changes in the vibration signals, the entropy measures were determined for the decomposed signal using the discrete wavelet transform is proposed.
今天用于诊断机器技术状况的系统,包括车辆,使用非常先进的方法来获取和处理输入数据。目前,有关问题正在全球范围内得到解决。目前,还不可能创建一个单一的程序来构建一个功能正常的诊断系统,而不管所选择的诊断对象是什么。因此,有必要进一步研究使用已经开发的方法的可能性,以及对其他诊断病例进行修改的可能性。本文介绍了利用贝叶斯分类器诊断乘用车发动机部件技术状况的相关研究成果。对火花点火发动机排气阀的损坏进行了诊断。技术状况的信息来源是在汽车不同运行条件下的各个测点记录的振动信号。为了描述振动信号变化的性质,提出了用离散小波变换确定分解后信号的熵测度。
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引用次数: 1
ACCURACY ANALYSIS OF AIRCRAFT POSITIONING USING REAL RADAR AND GPS DATA 基于真实雷达和GPS数据的飞机定位精度分析
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2022-09-01 DOI: 10.20858/sjsutst.2022.116.4
A. Ciećko, Artur Goś, K. Krasuski, Kacper Krześniak
This paper presents an analysis of the accuracy of aircraft positioning using radar and GPS satellite data. In particular, this study shows the results of research on determining the position of an aircraft, as well as the range and azimuth parameters for the GCA-2000 radar to the GPS solution. The research used measurement data from the GCA-2000 radar and the Thales MobileMapper Pro receiver placed onboard a Diamond DA-40NG aircraft. The flight experiment was carried out at the EPDE military airport in Dęblin. It was found that the average error in determining the position of the aircraft for the GCA-2000 radar was 295.57 m. Moreover, the average error in determining the range for the GCA-2000 radar is 138.12 m. Additionally, the average error in determining the azimuth for the GCA-2000 radar is equal to 0.408°.
本文利用雷达和GPS卫星数据对飞机定位的精度进行了分析。特别是,本研究显示了确定飞机位置的研究结果,以及GCA-2000雷达到GPS解决方案的距离和方位参数。这项研究使用了GCA-2000雷达和放置在Diamond DA-40NG飞机上的泰雷兹MobileMapper Pro接收器的测量数据。飞行实验是在德布林的EPDE军用机场进行的。研究发现,GCA-2000雷达在确定飞机位置时的平均误差为295.57 m。此外,GCA-200雷达在确定距离时的平均错误为138.12 m。此外在确定方位角时,GCA-2000雷达的平均误差等于0.408°。
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引用次数: 0
USE OF UNMANNED AERIAL VEHICLES FOR WATER SAMPLING IN HARD-TO-REACH WATER RESERVOIRS 无人驾驶飞行器在难采水库取水中的应用
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2022-09-01 DOI: 10.20858/sjsutst.2022.116.13
M. Marcisz, R. Morga, E. Remiorz, Tomasz Krason, Bartłomiej Michalik, Paweł Nalepka, Szymon Potempa, Kacper Saks, Gabriel Szecówka
Collecting water samples for laboratory analysis from hard-to-reach surface areas such as post-industrial reservoirs (for example, tailings depositories) or overgrown lakes and ponds poses several difficulties, and it is potentially dangerous for the persons carrying out such activity. This can be improved by the use of unmanned aerial vehicles (UAVs) while ensuring an adequate level of safety and full compliance with the requirements of PN-ISO standards. This article presents the possibility of using the BSP in the option of autonomous (automatic) operation, allowing for the collection of water samples intended for physico-chemical tests, from hard-to-reach surface reservoirs, following the provisions of the relevant PN-ISO standards.
从工业后的水库(例如尾矿库)或杂草丛生的湖泊和池塘等难以到达的地表地区收集水样供实验室分析,造成了若干困难,而且对从事这种活动的人来说可能是危险的。这可以通过使用无人驾驶飞行器(uav)来改进,同时确保足够的安全水平并完全符合PN-ISO标准的要求。本文介绍了在自主(自动)操作选项中使用BSP的可能性,允许根据相关PN-ISO标准的规定,从难以到达的地表水库收集用于物理化学测试的水样。
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引用次数: 0
ANTI-ROLL BAR DESIGN FOR A FORMULA SAE VEHICLE SUSPENSION 方程式汽车悬架的防倾杆设计
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2022-09-01 DOI: 10.20858/sjsutst.2022.116.17
G. Wheatley, Mohammad Zaeimi
This work outlines the development and analysis of an anti-roll bar system vehicle carried out by James Cook University. A detailed design phase was completed, clearly showing all stages of the design approach from the initial proposed design to the final design. Several analysis strategies are used throughout the report including weld calculations and FEA modelling. These calculations led to design changes impacting the final recommended system. This report demonstrates compliance with all Formula SAE rules regarding anti-roll bar systems.
本工作概述了詹姆斯库克大学进行的防侧倾杆系统车辆的开发和分析。详细设计阶段已经完成,清晰地展示了从最初的建议设计到最终设计的所有阶段的设计方法。在整个报告中使用了几种分析策略,包括焊接计算和有限元建模。这些计算导致了影响最终推荐系统的设计更改。该报告证明符合所有关于防滚杆系统的SAE公式规则。
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引用次数: 0
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Scientific Journal of Silesian University of Technology-Series Transport
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