Freight Station Research Articles

PROBLEMS OF REGULATION TANKS GRIDIRON RAILWAY STATION

Purpose. In the context of reforming the railways of Ukraine topical question remain rational capacity gridiron freight stations in relation to the size of the processed traffic volumes on them, which should be considered in con© Журавель І. Л. 2014 51 junction with the main objectives of the operation of railway transport: meet the needs of customers in the transportation, introduction of modern technologies, and others. The purpose of work is to determine the factors that affect the capacity of gridiron freight stations, research share of private wagons in total loading and the definition of the relationship between the sizes of the existing car fleet and track the development of railways of Ukraine. Methodology. The methods of the theory of organization operating the railways and to techno-economic analysis. Findings. With a slight decrease in the operational length of railways gridiron significantly increased the size of recycled freight car fleet. Continues to increase the ratio of the size of the car fleet of freight cars and the operating length of railways in most of what is most characteristic of the railways with the largest size pickup. Investigated the size of shares of private cars in total for specific cargo loading stations Dnieper and Donetsk railways. The factors affecting the gridiron freight stations. Scientific novelty. Developed a detailed structure of the factors influencing the gridiron freight stations, and determined the ratio between the sizes of the rolling stock and track the development of the railway station. Practical value. Detailing the factors influencing the gridiron freight stations will allow allocating in the analysis of their most significant work and improve the adequacy of simulation work specific freight station.

Monitoring of Pollution Using Density, Biomass and Diversity Indices of Macrobenthos from Mangrove Ecosystem of Uran, Navi Mumbai, West Coast of India

In this study, density, biomass and diversity indices of selected macrobenthos were assessed from substations along Sheva creek and Dharamtar creek mangrove ecosystems of Uran [Raigad], Navi Mumbai, west coast of India from April 2009 to March 2011. A total of 86 species of macrobenthos representing 61 genera and 45 families were identified comprising of gastropods, pelecypods, cephalopods, polychaetes, sponges, crabs, prawns and shrimps. Higher values of density, biomass and diversity indices were recorded during pre-monsoon and post-monsoon than the monsoon. Diversity values in the study area ranged from 0.203 to 0.332 indicating heavy pollution and the macro benthic fauna is under stress due to discharge of domestic wastes and sewage, effluents from industries, oil tanking depots and also from maritime activities of Jawaharlal Nehru Port Trust [JNPT], hectic activities of Container Freight Stations [CFS], and other port wastes. This study reveals that macro benthic fauna from mangrove ecosystems of Uran is facing the threat due to anthropogenic stress.

Fuzzy random programming models for location-allocation problem with applications

Three types of fuzzy random programming models based on the mean chance for the capacitated location-allocation problem with fuzzy random demands are proposed according to different criteria, including the expected cost minimization model, the α-cost minimization model, and the chance maximization model. In order to solve the proposed models, some hybrid intelligent algorithms are designed by integrating the network simplex algorithm, fuzzy random simulation, and genetic algorithm. Finally, some numerical examples about a container freight station problem are given to illustrate the effectiveness of the devised algorithms.

Linaria pelisseriana (L.) Mill. – a new alien species in the Czech Republic

Abstract The paper reports on a find of the Mediterranean species Linaria pelisseriana at the cargo terminal of Kopřivnice freight station (NE Moravia, Czech Republic), which is the first record of this species in the Czech Republic.

BP Neural Network Based Optimization for China Railway Freight Transport Network

In order to optimize the railway freight transport network, integrate the limited transport resources and overcome the current problems existing in the traditional transport organization, in this study, we propose a three-layer railway freight transport network system, analyze its hierarchical structure and describe the respective function orientation of the railway freight stations in different layers. Then we design a BP neural network model with adaptive learning algorithm and momentum BP algorithm to classify the railway freight stations into three layers. Finally, an empirical case study is presented to test the feasibility of the BP neural network. The simulation result indicates that the BP neural network model can classify the railway freight stations into three layers under relatively high training accuracy.

Strategic management of transport cargo complex

Purpose. Making the qualitative administrative decisions defining strategy and tactics of transport cargo complexes development, and also its subsystems, is possible only in the presence of flexible optimization model. This model has to consider multiparametricity and multicriteriality of the given task, uncertainty and vagueness of input information, and also to provide process automation of searching the best parameters of the given production facility. The purpose of the research is to develop procedures for the strategic management of complex with view of the most important factors and their stochastic nature, which will execute the improvement of technical equipment of TCC. Methodology. The problem of strategic management is based on solving the complex of issues of the optimal number of shunting locomotives, optimal processing capability of handling the front and rational capacity of warehouses. The problem is solved on the basis of the proposed optimality criterion – the specific set of profit per unit of capital assets of freight industry. The listed problems are solved using simulation modeling of the freight industry. Findings. The use of developed procedure allows one to improve the technical equipment of the freight stations and complexes. Originality. For the first time it was developed the procedure of strategic management of development. This procedure allows taking into account the probabilistic nature of demand for services of transport freight complexes and technological processes of client services on the complex stations. The proposed procedure can be applied during when planning the investments in the creation of transport freight complexes. Practical value. Use as a basic tool of simulation models of complex cargo operation allows estimating the effectiveness of the capital investments, the level of operating costs, as well as the quality of meeting the demands of potential customers in transportations at the stage of transport cargo complex.

Development of indicators of freight stations for digital convergence

This study aimed to develop indicators and to establish a procedure that could be used in adjusting functions of a freight station based on many different characteristics of railway logistics. Even though previous studies had drawn optimal models using mathematical algorithms, there was a difficulty in applying those models. Those studies were limited in that they did not consider many different characteristics of railway logistics but were based only on the volume of freight transportation. This study established indicators and procedures by considering characteristics of railway logistics to increase the effectiveness in adjusting functions of the freight station and then analyzed changes in the freight transportation volume and efficiency according to function adjustment of the freight station. As a result, it was shown that the operating cost had decreased more than two-fold compared to the transport income via function adjustment of the freight station.

Ukraine's window to the West: The role of international railway connection in Transcarpathia (Zakarpattia)

In this paper the role of railway network of Transcarpathia (Zakarpattia) in the international transport connections of Ukraine is investigated. The geopolitical importance and favourable transit location of this region within Ukraine along the international boundaries with Hungary, Romania and Slovakia, is well-known. The paper first focuses on the role of natural, political and transport factors in the development of railway network in the region from a historical perspective. Then the importance of railway network in Transcarpathia for the development of international freight traffic in the USSR is highlighted. The role of geopolitical interests in the past and present is demonstrated. The analytical part of the paper focuses on the latest changes in international freight traffic in the region in the period of 2008-2011, and major obstacles in its development are also discussed. The peculiarities of international freight traffic passing through border freight stations of the given region and the contiguous countries are assessed.

IMPROVING TRANSPORTATION PROCESS IN THE TRANSPORT POLYGON MODEL BASED ON THE MODEL OF SUPERVISORY CONTROL SYSTEM

In the article we explored the transportation process on transport polygon based on the model ofcontrol system. Represented organization of the train traffic by the tight thread of schedule in combination with modern dispatching systems of control. We investigated transverse and longitudinal method of laying freight trains and considered modern technologies of operational work based on automated systems ofcomplex management of transportation process. So, the organization of the train traffic by the tight thread of schedule in combination with modern dispatching systems of train traffic control contributes: increasing of the delivery goods speed, reducing of downtime on industrial and freight stations, reducing of the time that wagons spend on freight operations.And it helps to improve efficiency of the transport process and attractiveness of railway to cargoowners.

Formalization of the process of freight car fleet management of operator company

The technology of freight car fleet management of operators company in the subsystems of UZ has been investigated and analyzed. It has been determined that the choice of the optimal plan of distribution of car operators according to the route of a freight car (schedule lines) mainly depends on the volume of cars being present at freight stations of railway network and their location in space and time. The topology variants of railway network has been analyzed using theory of graph taking into account all the above said. Relying on a systematic approach it has been proved, that the increase of railway transport competitiveness is possible at the expense of the provision of railway subsystem with invariance properties. The railway subsystem itself should be considered as a compromise between its stability and flexibility.Thus, optimization model which formalizes technological process of freight car fleet management of operator companies has been mode. The objective of the given model is presented in the form of total operating cost and relevant set of constraints that takes into account technological conditions of route formation. The mode optimization model adequately reflects the terms of transportation process, ensures the reduction of transportation costs under the condition of satisfaction of clients’ requirements and provides for the formation of automated technology of management of car fleet of different forms of ownership. Taking into account the theory of computational complexity, it is reasonable to choose heuristic method, based on mathematical apparatus of genetic algorithms, to obtain the optimal plan of car distribution according to the routes

Synthetic Optimization Model and Algorithm for Railway Freight Center Station Location and Wagon Flow Organization Problem

The railway freight center stations location and wagon flow organization in railway transport are interconnected, and each of them is complicated in a large-scale rail network. In this paper, a two-stage method is proposed to optimize railway freight center stations location and wagon flow organization together. The location model is present with the objective to minimize the operation cost and fixed construction cost. Then, the second model of wagon flow organization is proposed to decide the optimal train service between different freight center stations. The location of the stations is the output of the first model. A heuristic algorithm that combined tabu search (TS) with adaptive clonal selection algorithm (ACSA) is proposed to solve those two models. The numerical results show the proposed solution method is effective.

基于DEA模型的广深铁路货运站整合优化

针对广深铁路货运资源整合问题，应用DEA模型进行分析并提出解决方案。首先分析了广深铁路货运站的现状，指出其存在布局不合理、运输效率低等问题。然后以效率提升为切入点，采用DEA分析技术对广深铁路货运站进行整合优化的实证研究，提出各货运站整合优化的解决建议，从而提高广深铁路的市场竞争力。As to Guangzhou-Shenzhen Railway freight resource integration, Data Envelopment Analysis (DEA) model is applied to analyze and propose solutions. The paper analyzes the status of the Guang-zhou-Shenzhen railway freight stations, and points out the existing problems such as unreasonable layout and low transportation efficiency. It also empirically researches the integration and op-timization of Guangshen railway freight station using DEA, taking the efficiency improvement as the breakthrough point. In the end, it puts forward the solutions for Guangshen railway freight station integration and optimization to improve its market competitiveness.

Improving processing technology of international container traffic volumes

This article presents questions of improving the existing processing technology wagons with containers international destinations coming to marshalling yards. It was analyzed the time spent by these cars on a marshalling yards and identified a number of operations that result in the recycling of wagons. There were proposed the method for priority processing of international traffic volumes with containers The improving technology of interaction between the marshalling yards and adjoining station port freight station, which specializes in processing container traffic volumes was proposed. Time spent reviewed elementwise on time for wagons with containers are sorting on marshalling yards and freight station in accordance with the proposed interaction technology. It was spotted the economy of processing time and reducing load technical facilities at stations.

Highway Freight Terminal Facilities Allocation based on Flexsim

For different technical levels of highway freight terminal, you need to allocate the appropriate facilities (such as parking lots, warehouses, loading and unloading areas, roads) to complete the various operations of vehicle and goods in the stations. According to the demand of the facilities’ ratio in the current revision of “classification and construction requirement of highway freight terminal”, the paper uses the flexsim computer simulation technology combined with AutoCAD and 3dsMax design software to simulate the highway freight terminal. A simulation result is given of the area ratio of the different technical levels of highway freight terminal.Flexsim software is a typical integration between virtual reality technology and discrete object-oriented simulation. In order to make the software more suitable for the simulation model of highway freight terminal, this paper comprehensively analysis the mapping relationship of the road freight station facilities and various objects in the flexsim software. By using external drawing software to create 3D models imported into flexsim simulation software, and create highway freight terminal user object libraries in flexsim, such as: truck. This will enable more realistic simulation models of highway freight terminals. In this paper, on the basis of a comprehensive analysis of the simulation characteristics of the highway freight terminal and flexsim simulation methods, a typical road freight station is used for an example to establish the simulation models and give a simulation result of the area ratio of the different technical levels of highway freight terminal. Effective technical means to scientific decision-making for the road freight station planning and construction program are provided.

Design of forest energy supply networks using multi-objective optimization

The replacement of fossil fuels with forest biomass should help mitigate Green House Gas (GHG) emissions. However the supply of energy wood is challenging because of high supply costs and rapidly increasing demand. Given, the heterogeneous structure of landownership, contractors and energy producers in Mid-Europe, supply network optimization is of major importance.A multi-criteria optimization problem (MOP) has been formulated, whereby the profit must be maximized and the CO2 emissions have to be minimized. The objective function includes decisions about chipping location, transport mode and volume and terminals used. To solve the MOP, the weighted sum scalarization approach was used to derive Pareto optimal points by stepwise changing weights from maximum profit to minimal CO2 emissions. The MOP was applied to a large-scale network of approximately 10,000 sources, 356 storage locations, 119 freight stations and 228 sinks with a demand of 982,000 t a−1.In an effort to minimize CO2 emissions, 30% of the woody biomass should be delivered chipped from the terminals and more than 50% chipped directly from forest. This results in CO2 emissions of 24.3 kg t−1 and a profit of 3.0 € t−1. The rest has to be transported in solid form directly from forest to plant. By changing the weight to maximize the profit, CO2 emissions will only increase by 4.5%, whereas the profit more than doubles from 3.0 to 7.4 € t−1. The average transport distance increases from 45.7 to 48.1 km and 73% of all terminals are used.

Research on the Freight Station Layout

At present, there are many problems existing in railway stations, such as excessive numbers and over-crowded layout, which seriously affect the scale benefit generation and rapid expansion of rail freight capacity. Aimed at these problems, a Mixed Integer programming model is proposed. Taking Lanzhou train operation depot for example, applying lingo software, the layout of freight station is obtained.

Monitoring of impact of anthropogenic inputs on water quality of mangrove ecosystem of Uran, Navi Mumbai, west coast of India

Surface water samples were collected from substations along Sheva creek and Dharamtar creek mangrove ecosystems of Uran (Raigad), Navi Mumbai, west coast of India. Water samples were collected fortnightly from April 2009 to March 2011 during spring low and high tides and were analyzed for pH, Temperature, Turbidity, Total solids (TS), Total dissolved solids (TDS), Total suspended solids (TSS), Dissolved oxygen (DO), Biochemical oxygen demand (BOD), Carbon dioxide (CO2), Chemical oxygen demand (COD), Salinity, Orthophosphate (O-PO4), Nitrite–nitrogen (NO2–N), Nitrate–nitrogen (NO3–N), and Silicates. Variables like pH, turbidity, TDS, salinity, DO, and BOD show seasonal variations. Higher content of O-PO4, NO3–N, and silicates is recorded due to discharge of domestic wastes and sewage, effluents from industries, oil tanking depots and also from maritime activities of Jawaharlal Nehru Port Trust (JNPT), hectic activities of Container Freight Stations (CFS), and other port wastes. This study reveals that water quality from mangrove ecosystems of Uran is deteriorating due to industrial pollution and that mangrove from Uran is facing the threat due to anthropogenic stress.

Location Selection of Chinese Modern Railway Logistics Center Based on DEA-Bi-level Programming Model

Properly planning the modern railway logistics center is a necessary step for the railway logistics operation, which can effectively improve the railway freight service for a seamless connection between the internal and external logistic nodes. The study, from the medium level and depending on the existing railway freight stations with the railway logistics node city, focuses on the site-selection of modern railway logistics center to realize organic combination between newly built railway logistics center and existing resources. Considering the special features of modern railway logistics center, the study makes pre-selection of the existing freight stations with the DEA assessment model to get the alternative plan. And further builds a Bi-level plan model with the gross construction costs and total client expenses minimized. Finally, the example shows that the hybrid optimization algorithm combined with GA, TA, SA can solve the Bi-level programming which is a NP-hard problem and get the railway logistics center number and distribution. The result proves that our method has profound realistic significance to the development of China railway logistics.

Optimization Research on Rail Freight Station Layout According to Situation Development

Optimization Research on Rail Freight Station Layout According to Situation Development

Determination model of rational variant of local operation of control station

The operation of railway stations is based on rational organization of local railway stations. The study is devoted to the improvement of local management of rail transportation by developing a technology of rational distribution of an engine yard in operational conditions with elements of artificial intelligence and its further implementation at automated workplace. The solution of the problem should be based on the development of a mathematical model of station service, included to the plan of formation of freight trains. According to this, we proposed an objective function of the mathematical model of the plan of local operation at a control station in the form of an integral indicator. The formed mathematical model is the basis for the automated technology of determination of rational variant of operation of locomotives that serve local rail stations provided the minimization of wagon-hours downtime at intermediate and freight stations. The proposed model is characterized by a fundamentally new approach to solution of optimization problems not only in the sphere of railway transport but also in other sectors of the industrial complex of Ukraine