TOTAL PRODUCTIVE MAINTENANCE IN THE RAILWAY SYSTEM

2015 ◽  
Vol 76 (6) ◽  
Author(s):  
Eliane da Silva Christo ◽  
Leandro Paixão Petruccelli ◽  
Kelly Alonso Costa
Keyword(s):  
Metropolitan Region ◽  
Rolling Stock ◽  
Total Productive Maintenance ◽  
Railway Systems ◽  
Production Improvement ◽  
History Of ◽  
Railway System

This study aims to evaluate the need for a change in the maintenance philosophy used for the permanent route of the railway concession that provides the service for rail passengers in a metropolitan region. It also examines the need for production improvement, due to the requirement for a change in the rolling stock. The technique of total productive maintenance and its indicators are applied to evaluate the procedure for replacement of sleepers in narrow gauge lines. The history of the railway in Brazil is also presented, together with citations on the components of railway systems, the permanent way and a case study showing the strategy chosen in order to reduce the time for improvements by more than 10%.

Software-Based Self-Test for Reliable Applications in Railway Systems

2012 ◽  
pp. 198-220 ◽  
Author(s):  
Alfredo Benso ◽  
Stefano Di Carlo ◽  
Alessandro Savino
Keyword(s):  
Test Solution ◽  
Test Coverage ◽  
High Quality ◽  
Basic Principles ◽  
Safety Standards ◽  
Railway Systems ◽  
Railway System ◽  
On Line ◽  
Self Test

The very strict safety standards, which must be guaranteed in a railway system, make the testing of all electronic components a unique and challenging case study. Software-based self-test represents a very attractive test solution to cope with the problem of on-line and off-line testing of microprocessor-based systems. It makes it possible to deeply test hardware components without introducing extra hardware and stressing the system in its operational condition. This chapter overviews the basic principles of software-based self-test techniques, focusing on a set of best practices to be applied in writing, verifying and computing the final test coverage of high-quality test programs for railway systems.

scholarly journals Pedestrian Patterns at Railway Platforms during Boarding: Evidence from a Case Study in Switzerland

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Giulia Dell’Asin ◽  
Johannes Hool
Keyword(s):  
Hot Spots ◽  
System Performance ◽  
Important Determinant ◽  
Methodological Approach ◽  
Growth Curves ◽  
Longitudinal Direction ◽  
Rolling Stock ◽  
Passenger Flow ◽  
Railway System

The boarding/alighting process at railway platforms is an important determinant of the railway system performance and depends on the characteristics of passengers, the layout of the platform, and the rolling stock. This research aims to increase the understanding of the process, providing a methodological approach to model the passengers’ behaviour when boarding at railway platforms. Adequate criteria were selected to define the so called “boarding cluster” and an easy mechanism was developed to select the boarding clusters. Passenger flow data collected at Bern railway station in Switzerland was used to test the proposed approach. The results show that (a) the clusters near the doors grow in the longitudinal direction with a rate of 6:1 between the length and width of clusters, and that (b) the growth curves rise quickly when clusters are still small, i.e., at the beginning of the boarding/alighting activity. Further research is needed to extend the validation of the model, considering other variables, such as critical pedestrian densities which occur at specific hot spots near obstacles at platforms.

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.

Press Propaganda and Subaltern Agents of Pan-Islamic Networks in the Muslim Mediterranean World prior to World War I

2018 ◽  
Author(s):  
Odile Moreau
Keyword(s):  
Middle East ◽  
World War I ◽  
North Africa ◽  
World War ◽  
Subaltern Studies ◽  
Resistance Movements ◽  
The Press ◽  
Mediterranean World ◽  
History Of

This chapter explores movement and circulation across the Mediterranean and seeks to contribute to a history of proto-nationalism in the Maghrib and the Middle East at a particular moment prior to World War I. The discussion is particularly concerned with the interface of two Mediterranean spaces: the Middle East (Egypt, Ottoman Empire) and North Africa (Morocco), where the latter is viewed as a case study where resistance movements sought external allies as a way of compensating for their internal weakness. Applying methods developed by Subaltern Studies, and linking macro-historical approaches, namely of a translocal movement in the Muslim Mediterranean, it explores how the Egypt-based society, al-Ittihad al-Maghribi, through its agent, Aref Taher, used the press as an instrument for political propaganda, promoting its Pan-Islamic programme and its goal of uniting North Africa.

Turning Aliens into Socialists

2010 ◽  
Vol 1 (1) ◽  
pp. 75-93
Author(s):  
Jessica Moberg
Keyword(s):  
Outer Space ◽  
The United States ◽  
Second World War ◽  
World War ◽  
History Of ◽  
Swedish History ◽  
Second World ◽  
The Universe ◽  
Highly Evolved

Immediately after the Second World War Sweden was struck by a wave of sightings of strange flying objects. In some cases these mass sightings resulted in panic, particularly after authorities failed to identify them. Decades later, these phenomena were interpreted by two members of the Swedish UFO movement, Erland Sandqvist and Gösta Rehn, as alien spaceships, or UFOs. Rehn argued that ‘[t]here is nothing so dramatic in the Swedish history of UFOs as this invasion of alien fly-things’ (Rehn 1969: 50). In this article the interpretation of such sightings proposed by these authors, namely that we are visited by extraterrestrials from outer space, is approached from the perspective of myth theory. According to this mythical theme, not only are we are not alone in the universe, but also the history of humankind has been shaped by encounters with more highly-evolved alien beings. In their modern day form, these kinds of ideas about aliens and UFOs originated in the United States. The reasoning of Sandqvist and Rehn exemplifies the localization process that took place as members of the Swedish UFO movement began to produce their own narratives about aliens and UFOs. The question I will address is: in what ways do these stories change in new contexts? Texts produced by the Swedish UFO movement are analyzed as a case study of this process.

Exploring Subbordia – the impact of suburbanisation in cross-border metropolitan regions. The case study of Szczecin and its German hinterland

2018 ◽  
Vol 60 (1) ◽  
pp. 5-13 ◽  
Author(s):  
Martin Barthel ◽  
Ewelina Barthel
Keyword(s):  
Border Region ◽  
Metropolitan Region ◽  
Metropolitan Regions ◽  
Grass Roots ◽  
Planning Support ◽  
Cross Border ◽  
Connected Area ◽  
The Impact ◽  
Local Narratives

Abstract This paper focuses on the largely unexamined phenomenon of the developing trans-national suburban area west of Szczecin. Sadly the local communities in this functionally connected area struggle with national planning policies that are unsuitable for the region. The paper examines the impact of those processes on the border region in general and on the localities in particular. The paper investigates the consequences for local narratives and the cohesive development of the Euroregion and what position Polish and German communities took to develop the region, even without the necessary planning support. The region has succeeded in establishing grass-roots planning mechanisms which have helped to create a metropolitan-region working from the bottom up.

A Case Study on the Process of Creating Interests in History of History-Deokhu

2019 ◽  
Vol 58 (1) ◽  
pp. 147-159
Author(s):  
Young-Seok Seo ◽  
Bong-Seok Kim
Keyword(s):  
History Of
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