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POTENTIALS OF FRANJO TUDMAN AIRPORT IN THE DEVELOPMENT OF INTERMODAL TRANSPORT 弗朗霍图特曼机场在多式联运发展中的潜力
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2023-06-01 DOI: 10.20858/sjsutst.2023.119.16
J. Šarić, A. Vidović, I. Štimac, B. Abramović
In the territory of the Republic of Croatia, not a single airport is connected to the railway infrastructure, which is a limiting factor for the further development of air cargo transport. The traffic network within the catchment area of Franjo Tudman Airport in Zagreb is not sufficiently interconnected, and therefore the implementation of the rules of the single market within the transport sectors is uneven. This paper aims to investigate the factors of intermodality of air transport and other modes of transport, focusing on cases of infrastructure integration in order to improve transport connectivity. The research analysed several airports where increase in cargo traffic was influenced by the expanding capacities and connectivity at the airport. By calculating the coefficient of utilisation of the intermodal surfaces of the reference airports, it was determined that the increase of these capacities does not necessarily lead to a significant increase in air cargo transport. However, due to estimates of the global growth of air cargo transport, an adequate and modernised infrastructure gives an advantage of better positioning in the transport market compared to those airports that do not have such resources. Based on the obtained results and increased investment to improve rail speeds and intermodal accessibility, the modular approach of expanding the infrastructure, through monitoring of cargo transport utilisation coefficient, is considered sustainable.
在克罗地亚共和国境内,没有一个机场与铁路基础设施相连,这是进一步发展航空货物运输的一个限制因素。萨格勒布弗朗霍·图德曼机场集水区内的交通网没有充分相互联系,因此在运输部门内执行单一市场规则的情况是不平衡的。本文旨在研究航空运输和其他运输方式多式联运的影响因素,重点研究基础设施整合的案例,以提高运输连通性。该研究分析了几个机场,这些机场的货运量增长受到机场容量扩大和连通性的影响。通过计算参考机场多式联运表面的利用系数,确定这些能力的增加不一定导致航空货物运输的显著增加。然而,由于对全球航空货运增长的估计,与那些没有这些资源的机场相比,充足和现代化的基础设施在运输市场上具有更好的定位优势。根据获得的结果和增加的投资来提高铁路速度和多式联运可达性,通过监测货物运输利用系数来扩大基础设施的模块化方法被认为是可持续的。
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引用次数: 0
EDGE DETECTION TECHNIQUE BASED ON BILATERAL FILTERING AND ITERATIVE THRESHOLD SELECTION ALGORITHM AND TRANSFER LEARNING FOR TRAFFIC SIGN RECOGNITION 基于双边滤波、迭代阈值选择算法和迁移学习的交通标志识别边缘检测技术
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2023-06-01 DOI: 10.20858/sjsutst.2023.119.12
Milind Parse, Dhanya Pramod
The traffic sign identification and recognition system (TSIRS) is an essential component for autonomous vehicles to succeed. The TSIRS helps to collect and provide helpful information for autonomous driving systems. The information may include limits on speed, directions for driving, signs to stop or lower the speed, and many more essential things for safe driving. Recently, incidents have been reported regarding autonomous vehicle crashes due to traffic sign identification and recognition system failures. The TSIRS fails to recognize the traffic signs in challenging conditions such as skewed signboards, scratches on traffic symbols, discontinuous or damaged traffic symbols, etc. These challenging conditions are presented for various reasons, such as accidents, storms, artificial damage, etc. Such traffic signs contain an ample amount of noise, because of which traffic sign identification and recognition become a challenging task for automated TSIRS systems. The proposed method in this paper addresses these challenges. The sign edge is a helpful feature for the recognition of traffic signs. A novel traffic sign edge detection algorithm is introduced based on bilateral filtering with adaptive thresholding and varying aperture size that effectively detects the edges from such noisy images. The proposed edge detection algorithm and transfer learning is used to train the Convolutional Neural Network (CNN) models and recognize the traffic signs. The performance of the proposed method is evaluated and compared with existing edge detection methods. The results show that the proposed algorithm achieves optimal Mean Square Error (MSE) and Root Mean Square Error (RMSE) error rates and has a better Signal to Noise Ratio (SNR) and Peak Signal to Noise Ratio (PSNR) ratio than the traditional edge detection algorithms. Furthermore, the precision rate, recall rate, and F1 scores are evaluated for the CNN models. With the German Traffic Sign Benchmark database (GTSRB), the proposed algorithm and Inception V3 CNN model gives promising results when it receives the edge-detected images for training and testing.
交通标志识别系统(TSIRS)是自动驾驶汽车成功的重要组成部分。TSIRS有助于收集并为自动驾驶系统提供有用的信息。这些信息可能包括速度限制、驾驶方向、停车或减速的标志,以及许多安全驾驶的基本内容。最近,由于交通标志识别和识别系统的故障,自动驾驶汽车发生了事故。在恶劣的环境下,如交通标志歪斜、交通标志划伤、交通标志断续或损坏等,TSIRS无法识别交通标志。这些具有挑战性的条件是由于各种原因而出现的,例如事故、风暴、人为破坏等。此类交通标志含有大量的噪声,因此交通标志的识别和识别成为自动化TSIRS系统的一项具有挑战性的任务。本文提出的方法解决了这些挑战。标志边缘是交通标志识别的一个重要特征。提出了一种基于自适应阈值和变孔径双边滤波的交通标志边缘检测算法,能有效地从噪声图像中检测出交通标志的边缘。将所提出的边缘检测算法与迁移学习相结合,用于训练卷积神经网络(CNN)模型并进行交通标志识别。对该方法的性能进行了评价,并与现有边缘检测方法进行了比较。结果表明,与传统边缘检测算法相比,该算法实现了最优的均方误差(MSE)和均方根误差(RMSE)错误率,具有更好的信噪比(SNR)和峰值信噪比(PSNR)。此外,对CNN模型的准确率、召回率和F1分数进行了评估。利用德国交通标志基准数据库(GTSRB),本文提出的算法和Inception V3 CNN模型在接收边缘检测图像进行训练和测试时,得到了令人满意的结果。
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引用次数: 0
ANALYSIS OF THE RAIL CARGO TRANSPORT VOLUME IN POLAND IN 2010-2021 波兰2010-2021年铁路货物运输量分析
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2023-06-01 DOI: 10.20858/sjsutst.2023.119.7
E. Macioszek
Rail transport is one of the branches of transport included in the group of land transport, and its operation is related to the transport of people and cargo by means of rail transport on a specially designated railroad built for this purpose. The article presents the classification of transported cargo in rail transport, the characteristics of the rail transport market in Europe, as well as the results of the analysis of the rail transport volume in Poland in 2010-2021. This analysis included an assessment of the following features: mass of transported cargo, performed transport and operational work, the average distance of cargo transport for a group of cargo transported by rail and the volume of intermodal transport. The obtained results allowed to conclude that the transport of goods by rail is systematically increasing. Moreover, intermodal transport is developing well.
铁路运输是陆地运输中的一个运输分支,其运营与为此目的修建的专门铁路上的铁路运输人员和货物有关。本文介绍了铁路运输中运输货物的分类、欧洲铁路运输市场的特点,以及2010-2021年波兰铁路运输量的分析结果。该分析包括对以下特征的评估:运输货物的质量、已完成的运输和运营工作、铁路运输的一组货物的平均货物运输距离以及多式联运量。所获得的结果表明,铁路货物运输正在系统地增加。此外,多式联运发展良好。
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引用次数: 0
APPLICATION OF CAUSAL ANALYSIS OF DISRUPTIONS AND THE FUNCTIONAL RESONANCE ANALYSIS METHOD (FRAM) IN ANALYZING THE RISK OF THE BAGGAGE PROCESS 中断原因分析和功能共振分析方法在行李过程风险分析中的应用
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2023-06-01 DOI: 10.20858/sjsutst.2023.119.4
A. Kwasiborska, Krzysztof Kądzioła
Following the events related to the pandemic and the war in Ukraine, increasing air traffic also increases turnaround agents' activity at airports. Turnaround operations are among the critical activities performed at airports, which must be characterized by punctuality and accuracy of the elementary handling operations. Lack of punctuality in ground handling causes delays in air traffic. On the other hand, a lack of accuracy can also cause disruptions that can turn into aviation incidents. Achieving punctuality and accuracy in aircraft handling is possible by minimizing the resulting disruptions during such handling. The safety management system (SMS) assumes activities to reduce the causes of potential incidents. In the turnaround process, the human factor, the technical aspect, and compliance with existing procedures are significant. The authors have extensively analyzed the disruptions arising during ground handling, learning its causes and effects, which will help avoid adverse events. Occurring disruptions can cause delays in the execution of flight operations but can also cause aviation incidents. Therefore, the authors focused on ground-handling disruptions that can cause adverse aviation incidents. The article presents the interference analysis results as an Ishikawa diagram. Using the FRAM method, an analysis of possible disruptions during the baggage handling process was carried out.
在与大流行病和乌克兰战争有关的事件发生后,空中交通的增加也增加了转机代理在机场的活动。返航作业是机场进行的关键活动之一,其特征必须是基本处理操作的准时性和准确性。地面服务不准时造成空中交通延误。另一方面,缺乏准确性也会造成干扰,进而演变成航空事故。通过尽量减少飞机装卸过程中产生的干扰,可以实现飞机装卸的准时性和准确性。安全管理系统(SMS)承担减少潜在事故原因的活动。在周转过程中,人的因素、技术方面和对现有程序的遵从是重要的。作者广泛分析了地面服务过程中出现的干扰,了解其原因和影响,这将有助于避免不良事件的发生。发生的中断可能会导致飞行操作的延误,但也可能导致航空事故。因此,作者将重点放在可能导致不利航空事故的地面处理中断上。本文以石川图的形式给出了干涉分析结果。使用FRAM方法,对行李处理过程中可能出现的中断进行了分析。
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引用次数: 2
ASSESSMENT OF THE RELATIONSHIP BETWEEN CORPORATE SOCIAL RESPONSIBILITY ENVIRONMENTAL GOALS IMPLEMENTATION AND FINANCIAL AND OPERATIONAL INDICATORS OF AIRLINES 企业社会责任环境目标实施与航空公司财务经营指标关系的评价
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2023-06-01 DOI: 10.20858/sjsutst.2023.119.14
L. Savchenko, Oksana Ovdiienko, M. Boichenko, T. Mostenska
The main idea of the article is assessing the feasibility of introducing Corporate Social Responsibility (CSR) for airlines. Moreover, the authors think that the environmental aspect in CSR is the most important, which predetermined the focus on this CSR component in the article. The article provides several examples of airlines that actively use CSR to improve their image, attract new, and increase the loyalty of existing customers. Environment indicators of the flight operations group on the performance indicators were established.
本文的主要思想是评估航空公司引入企业社会责任(CSR)的可行性。此外,作者认为企业社会责任中的环境因素是最重要的,这就决定了本文对企业社会责任这一组成部分的关注。本文提供了几个航空公司积极利用企业社会责任来改善形象、吸引新客户和提高现有客户忠诚度的例子。飞行运行组的环境指标对性能指标进行了制定。
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引用次数: 0
THE ANALYSIS OF WORK SHIFT PATTERNS AND RISK OF FATIGUE IN AIRCRAFT MAINTENANCE PERSONNEL: A CASE STUDY 飞机维修人员轮班模式与疲劳风险分析
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2023-03-01 DOI: 10.20858/sjsutst.2023.118.
Fransisca Tiur Basaria
In response to the COVID-19 pandemic in 2020, PT. XYZ, the biggest aircraft maintenance, repair, and overhaul (MRO) company in Indonesia, implemented a new shift pattern for line-maintenance personnel. The new shift pattern allows maintenance personnel to have fewer working hours per day (7-hour shifts) in more shift varieties for 5 consecutive days. Maintenance personnel will have 2-morning shifts, 1-noon shift, and 2-night shifts followed by 3 rest days. This study aims to explore the risk of fatigue caused by the newly implemented shift pattern. Data were collected through electronic questionnaires from a total of 303 respondents. This study found that at the time of the survey, many respondents (78 of 303, 26%) felt tired and had difficulty concentrating, regardless of the shift they were in. Based on the duty time, the highest scores of level 6 (tired, difficult to concentrate) were discovered on night shift day 5. This result shows that although the organization had provided the maintenance personnel with the opportunity to obtain sleep during rest days, tiredness and fatigue were still experienced by the aircraft maintenance personnel. This study recommends necessary actions to be taken to prevent fatigue, especially from the noon shift afterwards, where fatigue level is increasing, and alertness level is decreasing.
为应对2020年新冠肺炎疫情,印度尼西亚最大的飞机维护、维修和大修(MRO)公司PT.XYZ为线路维护人员实施了新的轮班模式。新的轮班模式允许维护人员连续5天在更多的轮班品种中减少每天的工作时间(7小时轮班)。维护人员将有2个早班、1个中班和2个夜班,然后是3个休息日。本研究旨在探讨新实施的轮班模式导致疲劳的风险。数据是通过电子问卷从总共303名受访者中收集的。这项研究发现,在调查时,许多受访者(303人中的78人,26%)感到疲惫,难以集中注意力,无论他们在哪个班。根据值班时间,6级(疲劳,难以集中精力)的最高得分出现在夜班的第5天。这一结果表明,尽管该组织为维修人员提供了在休息日睡觉的机会,但飞机维修人员仍然感到疲劳和疲劳。这项研究建议采取必要的措施来预防疲劳,尤其是从中班开始,疲劳程度正在增加,警觉性水平正在下降。
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引用次数: 0
STABILITY ANALYSIS OF THE SLOPE SUBJECTED TO THE DYNAMIC LOADING 动荷载作用下边坡稳定性分析
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2023-03-01 DOI: 10.20858/sjsutst.2023.118.17
L. Zabuski
This paper presents the results of a stability analysis of a slope located in the immediate vicinity of a railway line. The plans for the extension of this railway track include the construction of another line, which would run parallel to the existing one, within a few metres distance. It is expected that intensive goods train traffic will generate both static and dynamic forces in the underlying subsoil. Consequently, seismic vibrations will be generated in the subsoil, propagating mainly not only in the horizontal direction but also in the vertical direction. The method of seismic coefficient of the earthquake intensity determined by a pseudo-static method and horizontal component of acceleration is appropriate and recommended because it is simple, and the safety factor of the slope is calculated in the same way as in conventional stability calculations.
本文介绍了铁路附近某边坡的稳定性分析结果。延长这条铁路的计划包括建造另一条与现有铁路线平行的铁路线,在几米的距离内。预计密集的货物列车运输将在下层土壤中产生静力和动力。因此,将在地下产生地震振动,不仅在水平方向上传播,而且在垂直方向上传播。采用拟静力法确定地震烈度的地震系数和水平加速度分量的方法计算边坡安全系数的方法与常规稳定性计算方法相同,是一种简便的方法,值得推荐。
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引用次数: 0
THE STUDY OF STRESS-STRAIN STATE ELEMENTS OF THE TRUCK SEMI-TRAILER BODY BOTTOM 半挂车车体底部应力-应变状态元研究
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2023-03-01 DOI: 10.20858/sjsutst.2023.118.11
O. Lyashuk, Mykhailo Levkovych, Y. Vovk, Ivan Gevko, M. Stashkiv, Liubomyr Slobodian, Y. Pyndus
Research on the influence of geometric parameters of body bottom elements on the stress-strain state (SSS) of the truck with the general application of computer simulation methods was conducted. The nature of the change in static stress and displacement depending on the change in the proportions of the cross-section of the channel at fixed geometric dimensions of the workpiece and the thickness of the workpiece and the bottom material of the body has been studied. Analytical, numerical and experimental methods were used in the study of the stress-strain state of the metal structure of car bodies. Its weight minimization is an important aspect of a truck body design. Because an excess weight leads to increased production costs, reduced payload and reduced fuel efficiency. According to the concept of weight reduction with the provision of a given strength, the body model with variable parameters of the bottom elements is modelled and analyzed. CAD - body models and analysis of the stress-strain state of the channels of the bottom of the bodies have been performed using the software package SolidWorks.
运用计算机模拟方法,研究了车身底部单元几何参数对卡车应力-应变状态的影响。研究了静态应力和位移变化的性质,该变化取决于在工件的固定几何尺寸下通道横截面的比例变化以及工件和主体底部材料的厚度。采用解析法、数值法和实验法对车身金属结构的应力-应变状态进行了研究。其重量最小化是卡车车身设计的一个重要方面。因为超重会导致生产成本增加、有效载荷减少和燃料效率降低。根据在给定强度下减轻重量的概念,对具有可变底部元件参数的车身模型进行了建模和分析。利用SolidWorks软件包建立了车身CAD模型,并对车身底部通道的应力-应变状态进行了分析。
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引用次数: 0
THE USE OF NEURAL NETWORKS TO FORECAST THE NUMBER OF ROAD ACCIDENTS IN POLAND 使用神经网络来预测波兰道路交通事故的数量
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2023-03-01 DOI: 10.20858/sjsutst.2023.118.4
Piotr Gorzelańczyk
Every year, a large number of traffic accidents occur on Polish roads. However, the pandemic of recent years has reduced the number of these accidents, although the number is still very high. For this reason, all measures should be taken to reduce this number. This article aims to forecast the number of road accidents in Poland. Thus, using Statistica software, the annual data on the number of road accidents in Poland were analyzed. Based on actual past data, a forecast was made for the future, for the period 2022-2040. Forecasting the number of accidents in Poland was conducted using selected neural network models. The results show that a reduction in the number of traffic accidents is likely. The choice of the number of random samples (learning, testing and validation) affects the results obtained.
每年,波兰的道路上都会发生大量的交通事故。然而,近年来的流行病减少了这些事故的数量,尽管数量仍然很高。出于这个原因,应该采取一切措施来减少这个数字。这篇文章旨在预测波兰道路交通事故的数量。因此,使用Statistica软件,分析了波兰道路交通事故数量的年度数据。根据过去的实际数据,对2022-2040年的未来进行了预测。预测波兰的事故数量是使用选定的神经网络模型进行的。结果表明,交通事故的数量有可能减少。随机样本数量的选择(学习、测试和验证)会影响得到的结果。
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引用次数: 0
ANALYSIS OF TAXI SERVICE ORGANIZING AND REGULATION FOR BAKU CITY 巴库市出租汽车服务组织与管理分析
IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY Pub Date : 2023-03-01 DOI: 10.20858/sjsutst.2023.118.16
Vilayat Vailiyev, F. Dashdamirov, A. Gurbanov, Aynura Ismayilova
With the expansion of the use of digital technologies, the nature of almost all service industries has changed. Taxi services are no exception. The use of mobile applications, and the creation of call centres, have simplified the access of passengers to taxis and created a new situation. Despite this, with the emergence of a new situation, new problems appeared. This article aims to study taxi services organization and regulation. Thus, surveys were conducted to study attitudes towards offered services for passengers and drivers, the main participants in the taxi market. The questionnaires are aimed at studying the satisfaction of passengers and the attitude of drivers to working conditions. The total weight of using a taxi in comparison with other types of urban transport is determined. The frequency and main reasons for requests for taxi services were identified. This paper also studied the degree of use of mobile applications for calling a taxi and the distribution of orders between taxi companies. Surveys among drivers were mainly aimed at studying the mode of their work and their attitude to the conditions offered by taxi companies. To solve the identified problems, an appropriate regulation method through a single digital platform was proposed.
随着数字技术使用的扩大,几乎所有服务业的性质都发生了变化。出租车服务也不例外。移动应用程序的使用和呼叫中心的建立简化了乘客乘坐出租车的途径,创造了一种新的局面。尽管如此,随着新形势的出现,新问题也出现了。本文旨在研究出租车服务的组织与管理。因此,进行了调查,以研究对出租车市场的主要参与者乘客和司机提供的服务的态度。调查问卷旨在研究乘客的满意度和司机对工作条件的态度。与其他类型的城市交通相比,使用出租车的总重量是确定的。查明了要求提供出租车服务的频率和主要原因。本文还研究了移动应用程序呼叫出租车的使用程度以及出租车公司之间的订单分配。对司机进行的调查主要是研究他们的工作模式以及他们对出租车公司提供的条件的态度。为了解决已发现的问题,提出了一种通过单一数字平台进行适当监管的方法。
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引用次数: 0
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