2009, VOLUME 10 #2. "TRANSPORT AND TELECOMMUNICATION". ЖУРНАЛ ИЗДАТЕЛЬСТВА TSI, ISSN 1407-6160, ISSN 1407-6179 | TSI

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2009, VOLUME 10 #2. "TRANSPORT AND TELECOMMUNICATION". ЖУРНАЛ ИЗДАТЕЛЬСТВА TSI, ISSN 1407-6160, ISSN 1407-6179

ESTIMATION OF LOGISTICS SITUATION CHANGES 2007-2009 IN LITHUANIA 

Darius Bazaras1, Ramūnas Palšaitis2

Vilnius Gediminas Technical University
Plytines Str. 27, Vilnius, LT-10105, Lithuania
E-mails: 1dbazaras@vv.vgtu.lt; 2trvadyba@ti.vgtu.lt

Surveys of logistics situation in Lithuania have been performed in Vilnius Gediminas Technical University in 2007. This survey discovered mostly relevant problems in logistics: costs policy, logistics competences, and personnel competence development requirements. During this investigation the positive trends of logistics IT systems development have been identified. The product customisation, inventory management, warehousing, invoicing, order processing and reverse logistics outsourcing are relevant. The majority of Logistics companies supposed that their operating environment in Lithuania is good enough. Surveys results indicate that Lithuanian logistics companies have positive tendencies in the self assessment from the different point of view. In this article the main results of this survey are presented. In light of economical crisis of the end of 2008 the main survey results are revised and new surveys’ directions for future investigations are formed.

Keywords: logistics, transport policy, survey

 

COMMON VIRTUAL ENVIRONMENT IN THE EUROPEAN TRANSPORT TRAINING 

Igor Kabashkin1, Hans-Jörg Lotter2

1President of Transport and Telecommunication Institute
Lomonosova Str.1, Riga, LV-1019, Latvia
Ph.: +371 67100594.
Fax: +371 67100535.
E-mail: kiv@tsi.lv

2President of Infowerk Multimedia
Martinsbühel 6, A-6170 Zirl, Austria
Ph.: +43(0)5238/52099-0,
Fax: +43(0)5238/52099-4.
E-mail: hansjoerg.lotter@infowerk.at

The creation of a united European transport market without restrictions or barriers to access, based on harmonised conditions of competition, is becoming one of the principal objectives of common transport policy in Europe.
In the same way as transport systems, processes and services operate in an increasingly more European framework, transport education and training need to change their contents taking international aspects and globalisation into consideration and move from conventional to networked environments. Even initial transport education processes at vocational and higher educational levels must be a part of these dynamic changes to enable their graduates to meet employers’ needs and perform at the market.
The establishment of Innovative Virtual European Transport Training Agency (IVETTA) is one of the steps toward this direction.
The IVETTA is an educational network of persons and institutions involved in transport education and training and interested in supporting it by use of multimedia and information technologies. It focuses on enabling transport educators and trainers to introduce any kinds of educational multimedia, new technologies and common standards to their educational processes as knowledgeable consumers or well acquainted supervisors or even to become enthusiastic multimedia developers. For this, there is required not only an appropriate technological infrastructure but also an organizational basis and culture encouraging collaboration and exchange to the benefit of all of the network’s members.
The mission of IVETTA is creation of standards for the development and adoption of technologies that enable high-quality, accessible, and affordable transport education and training experiences. IVETTA will be enabling the next generation of Digital Learning Services, combining new forms of digital content, assessment, applications, and administrative services. Strategic goal of IVETTA is increasing quality and safety of all mode of transport on the base of high quality standards in the life-long education and training and common network of training, industry and maintenance organizations. Paper describes main objectives, innovation strategy focuses, main activities of future network co-operation and results, expected to be worked out by the IVETTA.

Keywords: transport, training, education

RELIABILITY OF FATIGUE-PRONE AIRFRAME. INSPECTION PROGRAM CONTROL 

Yury Paramonov, Andrey Kuznetsov

Aviation Institute,
Riga Technical University
Lomonosova Str. 1, Riga, LV-1019, Latvia
Ph.: +371 67255394.
Fax: +371 67089990
E-mail: yuri.paramonov@gmail.com, andreyk@hotbox.ru

Algorithm of inspection program development and control using theory of Markov chains and p-set function definition on the base of processing of approval lifetime test result is discussed.We make assumption that some Structural Significant Item (SSI), the failure of which is the failure of the whole system, is characterized by a random vector (r.v.) (,dcTT), where cTis critical lifetime (up to failure), dTis service time, when some damage (fatigue crack) can be detected. We suppose also that a required operational life of the system is limited by the so-called Specified Life (SL), t SL, when system is discarded from service. Some examples are given.

Keywords: inspection program, Markov chains, reliability

STATISTICAL ANALYSIS OF THE RELATIONSHIP BETWEEN PUBLIC TRANSPORT ACCESSIBILITY AND FLAT PRICES IN RIGA 

Dmitry Pavlyuk

Transport and Telecommunication Institute
Lomonosova Str. 1, Riga, LV-1019, Latvia
Ph.: +371 29958338.
E-mail: Dmitry.Pavlyuk@tsi.lv

The relationship between public transport accessibility and residential land value is a point of interest of many recent researches. A hedonic price regression model, widely used in this research area, has one very important shortcoming – it calculates an “average” influence of factors on land value in the analysing area. Usually spatial effects present in data, and the influence of public transport accessibility can be distributed over the area non-uniformly. In this study we apply a comparatively new modification of the regression model – geographically weighted regression – to examine the relationship between public transport accessibility and residential land value (in a form of rent and sell prices) in Riga. The proposed method allows taking into account spatial effects present in the relationship. We use information about geographical locations of urban public transport stops and routes to calculate a level of transport accessibility. Together with the transport accessibility level and a common set of property-specific parameters (floor area, number of rooms, etc.) we consider additional hedonic properties of a flat location such as distances to supermarkets, higher schools and natural attractors like large parks, the river, and the seaside.

Keywords: geographically weighted regression, hedonic price model, public transport accessibility

 

RELIABILITY AND FUNCTIONAL ANALYSIS OF DISCRETE TRANSPORT SYSTEMS BY MODELLING AND SIMULATION 

Tomasz Walkowiak, Jacek Mazurkiewicz

Institute of Computer Engineering,
Control and Robotics Wroclaw University of Technology
ul. Janiszewskiego 11/17, 50-372 Wroclaw, Poland
E-mails: Tomasz.Walkowiak@pwr.wroc.pl, Jacek.Mazurkiewicz@pwr.wroc.pl

The paper describes a novel approach to the analysis of discrete transport systems (DTS). The proposed method is based on modelling and simulating of the system behaviour. Monte Carlo simulation is a tool for DTS performance metric calculation. No restriction on the system structure and on a kind of distribution is the main advantage of the method. The system is described by the formal model, which includes reliability and functional parameters of DTS. The paper presents a description of developed simulator with its performance analysis. Moreover a case study based on real transport system with exemplar results is given.

Keywords: reliability, discrete transport system, Monte-Carlo simulation

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