Cost effectiveness of wayside derailment detection
Schöbel, Andreas; Maly, Thomas
2010 - anglický
Wayside train monitoring systems are an important issue of modern railway operation due to the fact that more and more stations will become remote controlled by an operation centre. Therefore
the task of monitoring fault states on moving vehicles has to be overtaken by autonomous sensor systems. Based upon the background of liberalized railway market it cannot be guaranteed that every vehicle is equipped with necessary sensors for fault state monitoring when passing the network
of an infrastructure manager. Therefore each infrastructure manager has to install wayside equipment to check passing vehicles for fault states occurrences. The worst case scenario of not recognized fault states in time is a derailment. If preventing monitoring systems are not able to detect derailment indications in an early stage, the derailment itself must be identified by dedicated devices e.g. wayside derailment detectors. For safety related usage in a whole railway network the number of necessary wayside installations has to be identified in context to financial feasibility. To solve these questions
a methodology was developed at Vienna University of Technology to estimate the potential costs
and benefits under consideration of operational boundary conditions. Costs are directly related
to the number of implemented derailment detectors, whereas benefit can be argued by reduced length
of destroyed superstructure in case of a derailment. The braking behavior of different trains and the points on a line are the boundary conditions for practical implementation of this approach.
Klíčová slova:
wayside train monitoring; derailment detection
Plné texty jsou dostupné v digitálním repozitáři UPCE.
Cost effectiveness of wayside derailment detection
Wayside train monitoring systems are an important issue of modern railway operation due to the fact that more and more stations will become remote controlled by an operation centre. Therefore the ...
Methodology of critical transport infrastructure objects identification
Soušek, Radovan; Dvořák, Zdeněk; Kelemen, Miroslav
2010 - anglický
The article describes experiences from Czech Republic and Slovakia in case of critical transport infrastructure elements selection and identification. The attention is focused on objects, which have high importance for international transport corridors.
Klíčová slova:
critical transport infrastructure; new methodology of objects identification
Plné texty jsou dostupné v digitálním repozitáři UPCE.
Methodology of critical transport infrastructure objects identification
The article describes experiences from Czech Republic and Slovakia in case of critical transport infrastructure elements selection and identification. The attention is focused on objects, which have ...
Negative and positive effects of transport on environment
Švadlenka, Libor
2010 - anglický
The paper deals with negative and positive effects of transport on environment. The society,
as a bearer of costs on environment protection does not represents homogenous unit. In term of transport
costs allocation the society can be split on society sphere (environment protection costs especially bear public service organisations and civil service authorities) and on individual sphere (majority of costs on environment protection bear in essence individuals). Finally the paper deals with the trends of transport
in relation to environment including the problem of financing the external costs of transport.
The article is published within the solution of research proposal VZ-MSM 0021627505
„The transport systems theory“.
Klíčová slova:
environment; transport; costs; pollution; subsidies; internalization
Plné texty jsou dostupné v digitálním repozitáři UPCE.
Negative and positive effects of transport on environment
The paper deals with negative and positive effects of transport on environment. The society, as a bearer of costs on environment protection does not represents homogenous unit. In term of ...
Railway parts fatigue behaviour under influence of the inner imperfections
Švanda, Pavel; Schmidová, Eva
2010 - anglický
Contribution is devoted to the study of cracking of cast railway frog. In contribution are summarized of findings that were found during investigation of source of cracking. Material properties were investigated by mechanical properties of materials. Fracture area was study by macro and microstructure (fractography) and microstructure and structure defects of bulk material was study by optic and SEM microscopy. Initialization of crack was found in synergic incidence of initial heat cracks and stress concentration in sizable change of cross-section of cast. Main source of failure was found in technology of heat treatment of cast and/or not very proper design of cast.
Klíčová slova:
fractography; cast steel; high strength steels; microstructure
Plné texty jsou dostupné v digitálním repozitáři UPCE.
Railway parts fatigue behaviour under influence of the inner imperfections
Contribution is devoted to the study of cracking of cast railway frog. In contribution are summarized of findings that were found during investigation of source of cracking. Material properties were ...
Economic means of the support cycle transport and possibilities of financing for the cycling
Vohnická, Pavla
2010 - anglický
Motor transport brings in the community the succession of the adverse effects as the externalities consequently it is undesirable to ignore the contemporary trend of uncontrolled motor transport increase but it is demanded to give support to all possibilities which bring on the contrary sustainable growth of the motor transport, also belonging to the cycle transport support. In present time there is the modern trend in this domain the build-up and extend the quality safety and functional cycle paths and routes which should contribute to support at the progressive cycle transport intensity increase. The evident key question of the next cycle transport development is sufficient financial means
for the build-up of cycle paths and cycle routes.
Classical home sources are public and regional budgets though limited and mostly are not
managing financing all costs. But they are acceptable as one of several financial services.
The most notable home source is the State Fund for Transport Infrastructure which provides a year
considerable finance means for the build-up of cycle paths and cycle routes. In 2009 SFTI budget
proposition is set 180 million crowns aside for these purposes the contribution can be provided for project up to 65% of relevant costs. The rules make it possible to co financing the projects which have received grants from EU Structural Funds. The foreign source is first of all EU Structural Funds. In actual period 2007 – 2013 are Regional Operational Programs acceptable. They are based on the statistical units NUTS II which are situated in the Czech Republic with the exception of the capital city Praha. They are Moravskoslezsko, Střední morava, Střední Čechy, Jihovýchod, Severovýchod Severozápad and Jihozápad. An applicant gives request for a grant in terms of the competent ROP who is belonging
to the respective one. Every ROP offers another level of financial means University of Pardubice, Jan Perner Transport Fakulty which are classified into Priority Axes. Alike as in last period there are set similar conditions of the grant namely that of these ROP there can be financing maximum
85% of relevant costs. Except for the financial scope the cycle support can be even a layout cycle paths and cycle routes at railway bodies after cancelled railway´s tracks whose parameters are similar as cycle paths or (if you like) routes parameters and then the reconstruction of railway body is not so financially demanding. Next
possibility is to build-up cycle paths and cycle routes along water streams, but the build-up can
be made as roads for more categories of transport because the roads are used even for the River-Basins vehicles. The legislative possibility for cycle support is so–called Landed Estate Modifications which solve even strained legal relations of the landholders over which a layout cycle paths and cycle routes is planned.
The aim of the article is to demonstrate the support means for build-up of cycle paths and cycle routes.
Klíčová slova:
Regional Operational Programme; EU Structural Funds; the State Fund for Transport Infrastructure; cycle path; cycle route; railway body
Plné texty jsou dostupné v digitálním repozitáři UPCE.
Economic means of the support cycle transport and possibilities of financing for the cycling
Motor transport brings in the community the succession of the adverse effects as the externalities consequently it is undesirable to ignore the contemporary trend of uncontrolled motor transport ...
Usage simulation methods for education
Černý, Ondřej; Doleček, Radovan
2010 - anglický
The paper deals with usage of computer simulation methods for education at Department of Electrical and Electronic Engineering and Signaling in Transport, Jan Perner Transport Faculty,
University of Pardubice. Current situation of railway technics is very complicated and sophisticated both from viewpoint of railway infrastructure and from viewpoint of transport means. The particular parts of system are necessary to be analyzed from viewpoint of their behaviour and from viewpoint of influence
to surrounding parts of the whole system. Therefore students as future railway experts must be trained for ability of problem identification and suitable design of problem solution. This readiness of experts for real operation of these devices is one of the main goals of lecturers from the mentioned department.
Klíčová slova:
simulation; harmonic; locomotive; catenary; interference; EMI
Plné texty jsou dostupné v digitálním repozitáři UPCE.
Usage simulation methods for education
The paper deals with usage of computer simulation methods for education at Department of Electrical and Electronic Engineering and Signaling in Transport, Jan Perner Transport Faculty, University of ...
Utilizing historical and current travel times based on floating car data for management of an express truck fleet
Ebendt, Rüdiger; Sohr, Alexander; Touko Tcheumadjeu, Louis Calvin; Wagner, Peter
2010 - anglický
During the last nine years, a couple of prototype ITS applications based on Floating Car Data (FCD) of taxi fleets have been developed at German Aerospace Center (DLR). A core application is a route guidance and monitoring system based on current and historical road segment travel times.
Recently, it has been extended for use in the German funded project SmartTruck, run by a consortium consisting of the logistics key player DHL, DLR and the German Research Center for Artificial Intelligence (DFKI). An important aim of the project was the use of historical and current traffic information for energy-efficient, optimized offline planning and dynamic re-planning of the tours of DHL express trucks in Berlin, Germany. This paper discusses the architecture of the SmartTruck system and the methodology used
to generate historic and current road segment travel times from positional data.
Klíčová slova:
Floating Car Data (FCD); Global Positioning System (GPS); traffic monitoring; map-matching; traffic guidance; traffic planning
Plné texty jsou dostupné v digitálním repozitáři UPCE.
Utilizing historical and current travel times based on floating car data for management of an express truck fleet
During the last nine years, a couple of prototype ITS applications based on Floating Car Data (FCD) of taxi fleets have been developed at German Aerospace Center (DLR). A core application is a route ...
Transport user as an instrument of economic growth, efficiency and effectiveness
Kudláčková, Nina; Čáp, Jiří
2010 - anglický
This article focuses on the transport user. It assume, that the transport user is an instrument of economic growth, the efficiency and effectiveness. An efficient and effective transport system can significantly support the economic growth. Industry expects an effective and efficient transport system to support sustainable economic growth and enable it to compete in state, national and global markets. It expects an interconnected system of roads, rail, pipelines, ports and airports to ensure products reach markets quickly, efficiently and in good condition. Transport users are important economic agents from this point of view. Because people are
creators of markets, are inputs to production and consumers of goods and services. The transport task in relation to people is therefore complex. Transport user is so very important part of the transportation planning process. This article will try to resume basic aspects and important areas influenced by the force of transport user.
Klíčová slova:
transport user; economic growth; efficiency; effectiveness
Plné texty jsou dostupné v digitálním repozitáři UPCE.
Transport user as an instrument of economic growth, efficiency and effectiveness
This article focuses on the transport user. It assume, that the transport user is an instrument of economic growth, the efficiency and effectiveness. An efficient and effective transport system can ...
Electro acoustic analogies in MatLab environment
Kulička, Jiří
2010 - anglický
Analogy is a cognitive process of transferring information from a specific object (source)
to another specific object (goal), in this case means a mathematical similarity between different physical
systems and processes. This article deals with the method of calculating the resonant frequency acoustic system on the basis of electro acoustic analogy, based on isomorphism various physical systems - electrical, mechanical, hydraulic and electro acoustic. Acoustic systems can be created by combining their individual components, like electrical circuits or mechanical and hydraulic systems. The acoustic resonance in the system always takes place when it has alternating power and its impact coincides with the natural frequency of vibration. The article created electro acoustic model of flute, which is studied using a computer model in an environment of Matlab and Simulink. The model works by calculating the acoustic impedance, which is determined by the resonant frequencies. Resonance occurs always in zero point graph of a function, the impedance changes its value from negative to positive.
This model leads to very decent results when we compared the theoretical values of resonant
frequencies with calculated. The possibility of experimental investigation of acoustic systems,
the equivalent electrical circuit is in economic terms, time and according to the results and accuracy of better solutions than the investigation of their own systems. The model can be used to design dimensions of the flutes and other acoustic systems, or to improve their debugging.
Klíčová slova:
auditory system; resonant frequency; electro acoustic analogy; electro acoustic model; flute; Matlab; acoustic impedance
Plné texty jsou dostupné v digitálním repozitáři UPCE.
Electro acoustic analogies in MatLab environment
Analogy is a cognitive process of transferring information from a specific object (source) to another specific object (goal), in this case means a mathematical similarity between different ...
Use cases as a semi-formal way of description of the ETCS functional behaviour
Kunhart, Michal; Marek, Jakub; Ouředníček, Jan
2010 - anglický
The contribution presents methodology of functional requirements specification of the system ERTMS/ETCS. This methodology is based on Use Cases of Unified Modelling Language. In the first part there is a brief introduction to Use Cases - their description, aim and structure.
Next there is a description of particular parts of Use Cases, their aim, qualities and their mutual
relationships with respecting solved problem.
The following part is dedicated to relationships between particular Use Cases and their hierarchical arrangement. There are also mentioned the relationships to the following steps of the functional requirements specification and to verification and validation activities in the contribution. Also Use Cases management problem is presented.
Klíčová slova:
use case; unified modelling language; methodology of functional requirements specification; ERTMS/ETCS
Plné texty jsou dostupné v digitálním repozitáři UPCE.
Use cases as a semi-formal way of description of the ETCS functional behaviour
The contribution presents methodology of functional requirements specification of the system ERTMS/ETCS. This methodology is based on Use Cases of Unified Modelling Language. In the first part there ...
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