Case study of differential-GPS safety integrity performance on Qinghai-Tibet railway line

2017 ◽  
Author(s):  
Debiao Lu ◽  
Baigen Cai
Keyword(s):  
Differential Gps ◽  
Railway Line

scholarly journals Demographic and functional potential of the Novosibirsk urban region in Russian Federation. A case study of transformations using the directional profile method

2016 ◽  
Vol 2 (320) ◽  
Author(s):  
Paulina Tobiasz-Lis ◽  
Marcin Wójcik
Keyword(s):  
Russian Federation ◽  
Research Programme ◽  
Economic Transformation ◽  
Urban Region ◽  
Railway Line ◽  
The Core ◽  
Functional Development ◽  
National Settlement ◽  
National Settlement System

The research presented in this article focuses on the urban region of Novosibirsk, which is one of the most industrialized part of Siberia and the Asian part of Russian Federation. To show relationships between the city as the core of the region and its peripheral area a case study analysing territorial units within the southern settlement belt along the Novosibirsk–Cherepanovo regional railway line over a distance of approx. 100 km. This belt was chosen because of the continuity of the settlement and due to the presence of different functional types of edge towns. The adopted system, from the core to the area of weakening direct links to Novosibirsk, helped to define the directional profile of the urban region as relating to the demographic and economic characteristics. The research was based on two methods of determining the functions of cities in the national settlement system: a research programme concerning the genesis of functional development and a research programme of specialised functions, the purpose of which is to determine the economic base (exogenous functions) of territorial units. The presented results have shown general tendencies in the transformations of the Novosibirsk urban region’s spatial structure, both in long-term perspective (the generic view of function development) and under contemporary circumstances related to the economic transformation of Russia.

Application of Particle Swarm Algorithm in Train-Set Circulation Problem of China

2012 ◽  
Vol 253-255 ◽  
pp. 1235-1240
Author(s):  
Hua Li ◽  
Bao Ming Han ◽  
Fang Lu ◽  
Xiao Juan Li
Keyword(s):  
High Speed ◽  
Particle Swarm Optimization Algorithm ◽  
Programming Model ◽  
Real Life ◽  
Particle Swarm ◽  
Particle Swarm Algorithm ◽  
High Speed Railway ◽  
Railway Line ◽  
Circulation Problem

Train-set circulation problem is an important issue in operations of high-speed passenger trains in the world. On the basis of characteristics of the train-set circulation problem in China, an integer programming model is presented without considering distinct train-set types. With redefinitions of some basic mathematical objects and operations, an improved particle swarm optimization algorithm is proposed to solve the model. The algorithm is applied in a real-life case study based on the timetable of the Wuhan-Guangzhou High-speed Railway Line. The results show that the proposed algorithm is effective to find the optimized train-set circulation plan.

scholarly journals Economics of a variable rate fertiliser strategy on a Whanganui hill country station

2017 ◽  
Vol 79 ◽  
pp. 125-129
Author(s):  
M.D. White ◽  
A.K. Metherell ◽  
A.H.C. Roberts ◽  
R.E. Meyer ◽  
T.A. Cushnahan
Keyword(s):  
Economic Benefit ◽  
Net Present Value ◽  
Hyperspectral Data ◽  
Variable Rate ◽  
Differential Gps ◽  
Hill Country ◽  
The Face ◽  
Gross Margins ◽  
Fertiliser Strategy

Abstract Automated flow control coupled to differential GPS guidance systems in aerial topdressing aircraft will allow variable rate (VR) fertiliser strategies to be applied on hill country farms. The effectiveness of these strategies will be enhanced with the use of remotely sensed hyperspectral data to categorise and quantify the farm landscape in greater detail. The economic benefit of a variable rate fertiliser strategy in comparison to a single rate (blanket) strategy was evaluated for a case study Whanganui hill country station. The analysis illustrates the robustness of a VR strategy in the face of volatile returns in that it produced a higher 10 year cumulative net present value (NPV) and remained at a positive advantage at three different stock gross margins, in comparison to a blanket approach. The effectiveness of hyperspectral imagery for defining effective pasture areas to assist development of more precise variable rate fertiliser applications, compared to the current visual classification from farm photography is discussed. Keywords: economic benefit, variable rate fertiliser, hyperspectral data

scholarly journals Railway Planning Double-Double Track (Case Study of Bekasi Station km 26 + 652 - Jatinegara Station km 12 + 050

2020 ◽  
Vol 4 (1) ◽  
pp. 12-21
Author(s):  
Ido Prasetio ◽  
Andri Irfan Rifai
Keyword(s):  
Human Error ◽  
Urban Land Use ◽  
Single Track ◽  
Train Track ◽  
Railway Line ◽  
Railway Planning ◽  
Physical Changes ◽  
Double Track ◽  
The Impact

Increasing the number of population and the development of activities will cause a growing need for space every day, this will result in physical changes and urban land use and can cause increased intensity of population movement from Megapolitan cities such as Bekasi, Bogor and Tangerang to the Metropolitan city (DKI Jakarta). Some people have now started to move from private vehicles to use public (mass) transportation such as buses, transjakarta, and electric rail trains or commonly known as KRL Commuter Line that serve Jabodetabek routes. The impact of crossing also causes buildup at each station. Train track with a single track (single track) is considered ineffective and inefficient and vulnerable to train accidents due to human error. It is necessary to develop or develop a double track to become a double-double track Bekasi Station km 26 + 652 - Jatinegara Station km 12 + 050. The research location is on the railway line from Bekasi Station to Jatinegara Station. The length of the train track is around 16 km and has 7 stations that are traversed, 5 of which are active (stop) and 2 passive stations.

scholarly journals Application of the methodology related to the emission standard to specific railway line in comparison with parallel road transport: a case study

2018 ◽  
Vol 244 ◽  
pp. 03002 ◽  
Author(s):  
Iwona Rybicka ◽  
Ondrej Stopka ◽  
Vladimír Ľupták ◽  
Mária Chovancová ◽  
Paweł Droździel
Keyword(s):  
Global Warming ◽  
Czech Republic ◽  
Energy Consumption ◽  
Greenhouse Gases ◽  
Road Transport ◽  
Emission Standard ◽  
The Czech Republic ◽  
Railway Line ◽  
The Impact

At present, the impact of transport on the environment constitutes a serious problem. This mainly concerns energy consumption and production of greenhouse gases (GHG) that via their participation in greenhouse effect intensification contribute to global warming. In this paper, the calculations provided by the EN 16258: 2012 methodology will be applied to two modes of transport: railway and road transport. Subsequently, the methodology will be applied to a case study of a selected nonelectrified railway line in comparison with parallel road transport. In particular, energy consumption and production of greenhouse gases will be monitored depending on traveling the distance between selected cities in the Czech Republic.

scholarly journals The Problem of Train Scheduling in the Context of the Load on the Power Supply Infrastructure. A Case Study

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4781
Author(s):  
Szymon Haładyn
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Load Capacity ◽  
Supply System ◽  
Rolling Stock ◽  
Supply Network ◽  
Railway Line ◽  
System Use ◽  
Railway System

This article deals with the new challenges facing modernising railways in Poland. We look at the problem of the efficiency of the power supply system (3 kV DC) used in the context of the increasing use of electric vehicles, which have a higher demand for electricity than the old type. We present and characterise the power supply system in use, pointing out its weaknesses. We consider a case study. The load of the power supply network generated by the rolling stock used in Poland was examined using a microsimulation. A real train timetable was taken into account on a fragment of one of the most important railway line sections in one of the urban agglomerations. Then the results were compared with the results of a microsimulation in which old units were replaced by new trains. These tests were carried out in several variants. We found critical points in the scheduling of railway system use. Our results indicate that it is becoming increasingly necessary to take into account the permissible load capacity of the supply network in certain traffic situations in the process of timetable construction.

scholarly journals Socio-Environmental Perspective in Project Stakeholder Management: The Railway Line 13 Case Study

2021 ◽  
Vol 181 ◽  
pp. 775-783
Author(s):  
Lívia Macêdo de Alencar ◽  
Rosária de F. Segger Macri Russo ◽  
Cláudia Terezinha Kniess
Keyword(s):  
Stakeholder Management ◽  
Railway Line
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