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Article | 25-November-2017

MODEL TO CALCULATE THE OPTIMAL MODE OF TRAIN LOCOMOTIVES TURNOVER

Summary. A model to calculate the optimal work modes of train locomotives while serving train flows is proposed. The model is a further development of the dynamic transportation problem. Parameters of train movement and locomotive utilization are published. Both locomotive turnover and train schedules are produced. Useful utilization of locomotives increases from 70% to 90–95%. This allows the reduction of several thousands of train locomotives.

Petr KOZLOV, Sergey VAKULENKO, Nikolay TUSHIN, Elena TIMUKHINA

Transport Problems, Volume 12 , ISSUE 3, 125–133

Research Article | 27-February-2017

IMPROVING THE METHODS OF ESTIMATION OF THE UNIT TRAIN EFFECTIVENESS

Summary. The article presents the results of studies of freight transportation by unit trains. The article is aimed at developing the methods of the efficiency evaluation of unit train dispatch on the basis of full-scale experiments. Duration of the car turnover is a random variable when dispatching the single cars and group cars, as well as when dispatching them as a part of a unit train. The existing methodologies for evaluating the efficiency of unit trains’ make-up are based on the use of

Dmytro KOZACHENKO, Roman VERNIGORA, Volodymyr BALANOV, Nazar SANNYTSKYY, Nikolay BEREZOVY, Tetiana BOLVANOVSKA

Transport Problems, Volume 11 , ISSUE 3, 91–101

Article | 18-June-2020

APPLICATION OF THE CHOSEN MULTI-CRITERIA DECISION-MAKING METHODS TO IDENTIFY THE AUTONOMOUS TRAIN SYSTEM SUPPLIER

This paper addresses an application of the specific methods of multi-criteria decision analysis to specify the appropriate supplier of an autonomous train in a certain production–distribution company. This company identifies three potential suppliers dealing with the development and purchase of autonomous train systems. In terms of the multi-criteria decision analysis, the WSA method, the Scoring method and the TOPSIS method were used to define a suitable compromise solution. To apply

Ondrej STOPKA, Mária STOPKOVÁ, Vladimír ĽUPTÁK, Srećko KRILE

Transport Problems, Volume 15 , ISSUE 2, 45–57

Article | 31-July-2018

PREDICTION AND VALIDATION FOR THE AERODYNAMIC NOISE OF HIGH-SPEED TRAIN POWER CAR

The aerodynamic noise of high-speed train power car was investigated in this article. The full-scale power car was first modeled, and the external steady flow field was computed by a realizable k-ε turbulence model. The aerodynamic noise sources of the power car surface and the external transient flow field were then calculated by broadband noise source model and large eddy simulation (LES) model, respectively. The static pressures on the train surface were obtained from the results of

Shi-jie Jiang, Song Yang, Dan Wu, Bang-Chun Wen

Transport Problems, Volume 13 , ISSUE 2, 91–102

Research Article | 10-April-2013

Electronic Track Map Building for Satellite-based High Integrity Railway Train Positioning

The concept of electronic track map has been introduced and researched in many satellite-based railway train positioning and location-based railway systems. It should characterize the railway tracks and their key objects and facilities with a satisfied accuracy and completeness. Based on the application requirements, design and building of the electronic track maps should be in accordance with the map matching approach, and moreover, considering the integrity effect that is decisive to safety

Liu Jiang, Cai Baigen, Wang Jian

International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 2, 610–629

Article | 30-July-2018

GENERATING AND MODELING OF BRAKING CURVE AND THE ASSESSMENT OF THE QUALITY OF AUTOMATIC STOPPING OF THE TRAIN

This paper presents the theory about generating the braking curve and the analysis of the influence of the braking controller parameters on the generation of the braking curve of the train. In this paper, computed examples of braking quality developed using generic quality factor are shown, and on the basis of the calculations, weight components of the factor and an additional criterion for assessing the quality of braking were proposed. It has been demonstrated that the developed algorithms

Jan Anuszczyk, Andrzej Gocek, Krzysztof Pacholski, Bartosz Dominikowski

Transport Problems, Volume 13 , ISSUE 2, 13–25

Research Article | 21-April-2017

A framework for categorizing risks in High Speed Train (HST) projects: the example of the first HST in Brazil

High Speed Train projects are exposed to risks of different natures, such as: low participation of private companies in the new railways construction, lack of skilled labor, high technology not available in the internal market, high costs with land acquisition, among others. Such risks if not managed properly can become real problems and compromise the achievement of the project objectives. The risk identification is the process of collection and description of events that can have negative

Viviane GRUBISIC, Elisete ZAGHENI, Yesid ASAFF, Acires DIAS

Transport Problems, Volume 10 , ISSUE SE, 37–46

Research Article | 14-February-2019

APPLICATION OF ARTIFICIAL NEURAL NETWORKS FOR SHORTTERM PREDICTION OF CONTAINER TRAIN FLOWS IN DIRECTION OF CHINA – EUROPE VIA KAZAKHSTAN

of customs operations, setting attractive and competitive tariffs, ensuring a high degree of cargo safety, development of transport infrastructure, assessment of the transit potential of railway network of the country, and predicting future cargo flows. This article shows the use of artificial neural networks (ANN) for predicting container train flows in the direction of China – Europe. For this purpose, a three-layer perceptron with a learning algorithm, based on the back-propagation of the

Zhomart ABDIRASSILOV, Aleksander SŁADKOWSKI

Transport Problems, Volume 13 , ISSUE 4, 103–113

Research Article | 02-February-2017

NEW POSSIBILITIES OF RAILWAY TRAFFIC CONTROL SYSTEMS

Summary. This article analyses the train traffic control systems in 1435 mm and 1520 mm gauge railways. The article analyses the aspects of train traffic control and locomotive energy saving by using the coordinates of track profile change that have been received from GPS. In the article, achievements of Lithuanian railways (LG) in the area of train traffic control optimisation are presented.

Lionginas LIUDVINAVIČIUS, Aleksander SŁADKOWSKI

Transport Problems, Volume 11 , ISSUE 2, 133–142

Article | 23-March-2018

ASSESSMENT OF RAILWAY LINES: AN EFFICIENCY RATING ANALYSIS FOR BALTIC COUNTRIES

The article investigates a possibility of using the traditional multi-criteria assessment methods to evaluate how significance of a railway line is distributed for the countries it crosses. The article analyses two examples of railway lines: the railway line Rail Baltica (Poland, Lithuania, Latvia and Estonia) and the container train Viking route (Lithuania, Belarus and Ukraine). When investigating for which countries the Rail Baltica project will have bigger significance, and for which smaller

Gediminas VAIČIŪNAS

Transport Problems, Volume 13 , ISSUE 1, 49–58

Article | 24-June-2021

EFFECT OF TRAIN POSITION REPORTING ON RAILWAY LINE CAPACITY

Over the recent years, an increase in the demand for passenger and freight rail transport services has been observed. This is mainly owing to the policy objectives related to the use eco-friendly means of transport and the investment causing the quality of rail services to grow. Along with the growing demand for rail transport, a problem of railway capacity utilisation has emerged. Although the implementation of the new Automatic Train Protection (ATP) system increases the safety level, but

Piotr FOLĘGA, Maciej IRLIK

Transport Problems, Volume 16 , ISSUE 2, 59–72

Research Article | 02-February-2017

Evaluation of the Transition to the Organization of Freight Trains Traffic By the Schedule

The paper considers the issues of bulk conveyance organization between industrial enterprises on schedule. Currently the movement of the main part of freight trains is performed on preparedness and occupation processes of separate schedule train paths by some terminals are not fixed. And, due to the lack of statistical material on the punctuality of the schedule for the movement of freight trains, research of the passenger trains movement with subsequent dissemination of results on freight

Dmitriy KOZACHENKO, Roman VERNIGORA, Vladimir BALANOV, Nikolay BEREZOVY, Lidiia YELNIKOVA, Yulia GERMANYUK

Transport Problems, Volume 11 , ISSUE 1, 41–48

Research Article | 02-February-2017

PROSPECTS FOR RAISING PASSENGER TRAIN SPEED ON THE RECONSTRUCTED SECTION OF THE UZBEKISTAN RAILWAYS

Annotation. Analysis of the state of technical equipment and railway infrastructure in the example section of the Tashkent-Andijan shows the possibility of increasing the speed of passenger trains. The results can be used in the reconstruction of railways operating under similar conditions, in order to increase train speed.

Saidburhan DJABBAROV

Transport Problems, Volume 11 , ISSUE 4, 103–110

Article | 23-March-2018

COORDINATION OF LOCOMOTIVES TURNOVER AND SERVICING MODES

servicing constraints. Service program SP-1 determines stations where forced stops will take place according to the necessity of servicing and forms the basic location of locomotives for further movement to servicing stations. The second step is the calculation of the optimal arrival of locomotives at servicing stations. Service program SP-2 provides location and release time of each locomotive after servicing. The third step is the calculation of a train schedule with the consideration for the location

Petr KOZLOV, Elena TIMUKHINA, Nikolay TUSHIN

Transport Problems, Volume 13 , ISSUE 1, 19–26

Article | 08-December-2019

THE INFLUENCE OF THE «TRAIN-TRACK» SYSTEM PARAMETERS ON THE MAXIMUM LONGITUDINAL FORCES' LEVEL

obtained for the first time. Comparison of those forces with the permitted values, from the point of view of the railway stock strength and eventual vehicle derailment, has been performed. As a result of numerical integration of the system of non-linear differential equations of train motion for the considered driving modes, the values of the greatest longitudinal shock and quasi-static forces, as well as the dependence of the latter on the train length, initial braking velocity, on the algebraic

Oleksandr PSHINKO, Liudmyla URSULYAK, Serhii KOSTRYTSIA, Yevhen FEDOROV, Anzhela SHVETS

Transport Problems, Volume 14 , ISSUE 4, 161–172

Article | 23-March-2018

AN APPLICATION OF AHP METHOD FOR EXAMINING THE TRANSPORT PLAN OF PASSENGER TRAINS IN BULGARIAN RAILWAY NETWORK

In this study, a methodology was developed for transport plan selection of intercity trains in railway network using the method of Analytic Hierarchy Process (AHP). For studying the transport plan, the following indicators have been chosen: the transport satisfaction, average number of train stops, average distance travelled, average speed, reliability, availability of service with direct transport and transport capacity. The methodology includes determination of variant schemes of

Svetla STOILOVA, Radina NIKOLOVA

Transport Problems, Volume 13 , ISSUE 1, 37–48

Research Article | 21-April-2017

Investigation on features and tendencies of axle-box heating

Breakdown of rolling stock axle-boxes if not detected in due time may cause a rail accident or disaster. At present, a lot of advanced technologies, modern equipment and devices, which “recognizes” faulty axle-boxes when the train is in motion, have been implemented. However, the timely identification of breakdown of rolling stock axle-boxes still is an acute problem, the initial stage of damage emergence being especially problematic. Presently, rolling stock axle-box breakdown is determined

Olegas LUNYS, Stasys DAILYDKA, Gintautas BUREIKA

Transport Problems, Volume 10 , ISSUE 1, 105–114

Article | 01-March-2015

A STUDY OF X-RAY MACHINE IMAGE LOCAL SEMANTIC FEATURES EXTRACTION MODEL BASED ON BAG-OFWORDS FOR AIRPORT SECURITY

The aviation security at the airport has been faced with increasingly severe situations since the 9-11 event. It’s of utmost importance to train airport X-ray machine screener’s image recognition competency. So they can prevent terrorists from bringing dangerous articles in their carry-on or checked bags. However, usually the luggages are placed in different positions and the density & volume of articles differ greatly. As a result, dangerous articles show a variety of X-ray image features

Ning Zhang, Jinfu Zhu

International Journal on Smart Sensing and Intelligent Systems, Volume 8 , ISSUE 1, 45–64

Article | 04-November-2019

PARALLEL COMPUTATIONS AND CO-SIMULATION IN UNIVERSAL MECHANISM SOFTWARE. PART I: ALGORITHMS AND IMPLEMENTATION

Parallel computations speed up simulation of multibody system dynamics, in particular, dynamics of railway vehicles and trains. It is important for reduction of required time at the stage of new railway vehicle design, for increase of complexity of studied problems and for real-time applications. We consider realization of parallel computations in Universal Mechanism software in three different areas: simulation of rail vehicle and train dynamics, evaluation of wheel profile wear and multi

Dmitry POGORELOV, Alexander RODIKOV, Roman KOVALEV

Transport Problems, Volume 14 , ISSUE 3, 163–175

Article | 04-November-2019

CONTROLLING OF TRAIN’S INTERIOR HEATING SYSTEM FOR MAXIMUM ENERGY EFFICIENCY

Dāvis BUŠS, Jānis EIDUKS

Transport Problems, Volume 14 , ISSUE 3, 121–134

Research Article | 14-February-2019

THE DISTRIBUTION OF MARSHALLING WORK OF INDUSTRIAL AND MAINLINE RAIL TRANSPORT

The article discusses the issue of effective distribution of work on formation of train network between the stations of industrial and mainline rail transport. The analysis is worked out of difficulties in the interaction of technological systems of railway transport of common and uncommon use and risks of the transport stream delays. The strategy for sorting of wagons and a complex of interconnected mathematical models is developed. The proposed solution method is based on step-by-step

Andrey BORODIN, Vitaly PANIN

Transport Problems, Volume 13 , ISSUE 4, 37–46

Research Article | 01-September-2014

RESEARCH ON THE CLASSIFICATION FOR FAULTS OF ROLLING BEARING BASED ON MULTI-WEIGHTS NEURAL NETWORK

A methodology based on multi-weights neural network (MWNN) is presented to identify faults of rolling bearing. With considerations of difficulties in analyzing rolling bearing vibration data, we analyzed how to extract time domain feature parameters of faults. Further, the time domain feature parameters extracted from fault signals are utilized to train multi-weights neural network for achieving an optimal coverage of fault feature space. Thus, faults of rolling bearing can

Yujian Qiang, Ling Chen, Liang Hua, Juping Gu, Lijun Ding, Yuqing Liu

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 3, 1004–1023

Original Research | 20-December-2018

SIMULATOR SICKNESS IN AIRFOX® DISORIENTATION SIMULATOR

adverse impact on post-simulator training activities. AirFox® DISO, is widely used in Indian Air Force (IAF) to train aircrew on spatial disorientation. The paper presents a study carried out in IAF on the aircrew reporting to IAM, IAF Bangalore for training. The results are presented based on the Simulator Sickness Questionnaire (SSQ) administered to the aircrew.

Piush Renjhen

Journal of the Australasian Society of Aerospace Medicine, Volume 10 , 1–5

Article | 07-May-2018

Fast Aerial UAV Detection Based on Image Segmentation and HOG-FLD Feature Fusion

In order to detect non-cooperative target UAV quickly and accurately, a novel method of UAV detection method based on graph theory and HOG-FLD feature fusion is presented in this paper. In order to avoid the time-consuming full search, the candidate areas of the UAV are obtained through the selective search of the image segmentation and the similarity, and the features are extracted through the method of gradient orientation histogram fusion FLD linear to train the SVM classifier with

Li Xiaoping, Lei Songze, Wang Yanhong, Xiao Feng, Penghui Tian

International Journal of Advanced Network, Monitoring and Controls, Volume 3 , ISSUE 1, 106–114

Article | 01-September-2014

EMPIRICAL MODE DECOMPOSITION AND ROUGH SET ATTRIBUTE REDUCTION FOR ULTRASONIC FLAW SIGNAL CLASSIFICATION

attribute reduction (RSAR) can be applied to implement feature selection. Finally, the selected features are taken as input of artificial neural networks (ANNs) to train the decision classifier for flaw identification. Experimental results show that compared to conventional wavelet transform based schemes and principal components analysis, EMD combined with RSAR can improve the performance of feature extraction and selection. Using such hybrid scheme can effectively classify different ultrasonic flaw

Yu Wang

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 3, 1401–1420

Call to Arms | 10-September-2020

The art of train driving: Flexing the boundaries to manage risk within an inflexible system

Anjum Naweed, Valerie O’Keeffe, Michelle R Tuckey

Eat, Sleep, Work, Volume 1 , ISSUE 1, 78–83

Article | 01-June-2016

PREDICTION OF SEWAGE QUALITY BASED ON FUSION OF BPNETWORKS

kinds, and train the corresponding BP networks with the two kinds of data. Before using SVM to classify the input data, PCA (principle component analysis) is used to analyze the correlation between sewage quality parameters. Then we predict the value of sewage quality parameters with the fusion results of the two BP networks. Test results of the case study show that fusion of BP networks not only can improve the stability of BP networks but also can improve the prediction accuracy.

Lijuan Wang

International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 2, 909–926

research-article | 25-August-2020

1/10th scale autonomous vehicle based on convolutional neural network

-channel 12-Bit PWM Servo driver has been used. The PWM frequency and duty cycle can be tuned to regulate the servo accurately by coding the circuit controller. Miscellaneous: the additional components required to meet the hardware system requirements are as follows. A SanDisk Extreme 128 GB microSD Card is connected to Rpi-4 for memory storage. Further, a PS4 Joystick is implemented to control the vehicle commands in user/train mode. Figure 1 shows all the individual major components used to

Avishkar Seth, Alice James*, Subhas C. Mukhopadhyay

International Journal on Smart Sensing and Intelligent Systems, Volume 13 , ISSUE 1, 1–17

Article | 01-September-2015

COMPENSATION OF CAPACITIVE DIFFERENTIAL PRESSURE SENSOR USING MULTI LAYER PERCEPTRON NEURAL NETWORK

, a test bench for a sample popular CPS is designed and implemented for data acquisition in a real environment. Then, the gathered data are used to train different MLPs as CPS compensation system which inputs are the output current of CPS and temperature value, and the output is compensated current or computed pressure. The experimental results for an ATP3100 smart capacitive pressure transmitter show the trained three layers MLP with Levenberg-Marquardt learning algorithm could effectively

Payman Moallem, Mohammad Ali Abdollahi, S. Mehdi Hashemi

International Journal on Smart Sensing and Intelligent Systems, Volume 8 , ISSUE 3, 1443–1463

Article | 08-December-2019

ASSESSING THE TRANSIT CAPACITY OF PORT SHUNTING YARDS THROUGH DISCRETE SIMULATION

The port shunting yards are developed inside the area of the ports. The main activities are to receive the freight trains from the hinterland, to shunt the freight wagons according to their final destinations from the area of the port, to receive the wagons from maritime terminals, to accumulate wagons according to their destination, and to depart the freight train to the hinterland. So, it is important for port administration to have good methods to evaluate the transit capacity of port

Florin RUSCA, Mihaela POPA, Eugen ROSCA, Aura RUSCA, Mircea ROSCA, Oana DINU

Transport Problems, Volume 14 , ISSUE 4, 101–112

Article | 18-June-2020

SIMULATION OF DYNAMIC PROCESSES OF INTERACTION OF CAR AND RAILWAY TRACK DURING TRAIN PASSAGE OF CURVED SECTIONS OF THE TRACK

Gabit BAKYT, Seidulla ABDULLAYEV, Nurgul SULEYEVA, Amandyk YELSHIBEKOV, Zhanerke SEIDEMETOVA, Zhadyra SADVAKASSOVA

Transport Problems, Volume 15 , ISSUE 2, 59–70

research-article | 23-April-2019

SUPPORTING FACTORS AND FACTORY EMPLOYEE’S BEHAVIOUR IN THE USE OF PUBLIC TRANSPORTATION MODE IN JAKARTA

public transport users in Jakarta has been declining year by year [18]. Variation in the number of Transjakarta bus and train passengers in Jakarta from 2011 to 2015 can be seen in Fig. 1. In contrast to the decreasing number of public transport passengers in Jakarta, the number of private transportation modes in Jakarta has increased. Variation in the number of motorcycles and private cars in Jakarta from 2011 to 2015 can be seen in Fig. 2. Fig. 1. Number of Transjakarta and train passenger in

Herdis HERDIANSYAH, Hudy Prabowo EDYSON, Sessario Bayu MANGKARA, Zulfahmi Ilman HINDAMI

Transport Problems, Volume 14 , ISSUE 1, 127–139

Article | 18-June-2020

STEEL RELIEVING CONSTRUCTIONS IN MINING AREAS AS TEMPORARY OR PERMANENT RAILWAY BRIDGES

This article describes three examples of bridge-type relieving constructions located on railway lines in the areas of active mining exploitation. It discusses how to take into account mining influences and how to support a temporary relieving construction on the railway embankment. This article discusses the incorrect solutions and their consequences. The first example involves the protection of train traffic continuity during the replacement of bridge span under an intensively used railway

Piotr BĘTKOWSKI

Transport Problems, Volume 15 , ISSUE 2, 107–118

Article | 31-December-2020

OVERVIEW OF SAFETY AT RAIL-ROAD CROSSINGS IN POLAND IN 2008-2018

they are approaching an intersection with a railway line. The rail-road crossing, depending on the category, is equipped with signaling devices warning of an oncoming train and barriers closing the entire width of the road or part of it, operated or operating automatically. In Poland, the category of rail-road crossing, the associated method and type of security used at the crossing, is determined on the basis of relevant acts and internal regulations of the railway line manager. The paper presents

Elżbieta MACIOSZEK, Agata KUREK, Bartłomiej KOWALSKI

Transport Problems, Volume 15 , ISSUE 4, Part 1, 57–68

Research Article | 21-April-2017

Assessing steam locomotive dynamics and running safety by computer simulation

given by design data, and the safety of the ride is impaired. Large unbalanced vibrations were found, affecting not only the fatigue resistance of the locomotive, but also influencing the crew and passengers in the train consist. Developed model and simulations were used to check several possible parameter variations of the locomotive, but the problems were found to be in the original design such that no serious improvements can be done in the space available for the running gear and therefore the

Dāvis BUŠS

Transport Problems, Volume 10 , ISSUE SE, 15–27

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