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51.
Railway traffic management as a function of the new infrastructure manager
Damjan Mlakar, Drago Sever, 2007, pregledni znanstveni članek

Opis: This article offers a survey of the current decentralised form of railway traffic management within the public railway infrastructure in the The Republic of Slovenia, which is the result of out-of-date and worn-out safety installations of railway stations and railway lines. The article presents a new model of railway traffic management as the basis for efficient activity and harmonization of railway traffic management in the The Republic of Slovenia to the systems of railway traffic management within EU. This article presents the advantages of a centralised system of railway traffic management and demonstrates that the application of this system can solve the problem of decentralized traffic management as a function of the new infrastructure manager.
Ključne besede: traffic management, centralization of railway traffic, traffic management centre, railway traffic management model
Objavljeno v DKUM: 05.06.2017; Ogledov: 1200; Prenosov: 134
.pdf Celotno besedilo (3,23 MB)
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52.
New approach to determining visibility length on passive protected level railroad crossings
Drago Sever, 2012, kratki znanstveni prispevek

Opis: The paper is based on the question whether the existing (legislation determined) method for determining the visibility length on passive protected level railroad crossings insures the relevant level of traffic safety. It has been recognised that using of such method does not provide stopping of road driver vehicles in front of railroad crossing in all conditions. Based on such conclusion a new approach to determining visibility length on passive protected level railroad crossing is proposed. The new approach is based on the assumption that it is necessary, primarily on level railroad crossings with local roads to recognize the worst possible and expected road and weather conditions. The testing of the proposed method in the real environment has shown that at lower speeds of road vehicles there is almost no difference, and that important benefits are recognised for the speeds of 30 and 50km/h where longer stopping distances of road vehicles have been detected (road vehicle can stop safely in front of a rail crossing) with almost the same visibility lengths. The use of the proposed method could have important impact on the increase of traffic safety on passive protected level railroad crossings.
Ključne besede: traffic safety, visibility field, level railroad crossings
Objavljeno v DKUM: 05.06.2017; Ogledov: 1256; Prenosov: 397
.pdf Celotno besedilo (892,41 KB)
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53.
Model of sustainable growth and development of the cableway transport system in Slovenia
Sergej Težak, Ratko Zelenika, Drago Sever, 2011, izvirni znanstveni članek

Opis: The cableway transport system is very important for the Slovenian tourist economy. Within the Slovene transport system, the cableway transport subsystem has a specific role because it allows and ensures access to regions which are difficult to access or completely inaccessible by other transport subsystems owing to the configuration of the area. The quality and development of transport services are directly linked to the introduction of new cableways. New technical achievements, which are nowadays used in cableways, all provide greater capacity and higher speed of cableways, which, however, results in their higher maintenance and exploitation costs. The cableway transport system is being developed in Slovenia, but not on principles of sustainable development. This paper presents a model of sustainable growth and development of the cableway transport system in Slovenia based on which it is possible to determine assumptions for future growth so that the Slovene cableway transport system would approach standards of such highly developed systems. The new model includes ten essential elements of this system for which growth rates were calculated.
Ključne besede: cableway transport system, cableways, econometrics, growth matrix, sustainbale growth, winter tourism, mountain tourist centre
Objavljeno v DKUM: 05.06.2017; Ogledov: 1344; Prenosov: 395
.pdf Celotno besedilo (513,45 KB)
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54.
Model approach to quality provision of public passenger transport
Roman Krajnc, Drago Sever, 2010, pregledni znanstveni članek

Opis: Modern approach to transportation system research is based on the system theory. System analysis is relevant. Constant transportation technique and technology development caused by the need of conformation to the new market conditions is the basis for such an approach. The model approach for resolving the problems of public passenger transport is provided in a scientific report. The model of quality of passenger transport comprises the submodels which define relevant measures for the provision of passenger transport quality. The synthesis of sub-model for adoption of quality standards, submodel of passenger demands, submodel of operation safety and security and economic submodel construct the model of quality of public passenger transport (PPT). Its evaluation has been carried out using SWOT analysis.
Ključne besede: public passenger transport, traffic, lines, network quality, mobility
Objavljeno v DKUM: 05.06.2017; Ogledov: 1277; Prenosov: 430
.pdf Celotno besedilo (212,87 KB)
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55.
Logistic operator - fundamental factor in rational production of services in multimodal transport
Ratko Zelenika, Drago Sever, Sabina Kamnik Zebec, Bojan Pirš, 2005, pregledni znanstveni članek

Opis: From its theoretical and practical point of view, traffic is one of the fundamental factors of the economy in a state. In the developed European countries, a rational production of transport services is presented by multimodal transport and the correct selection of a logistic operator. The aim of multimodal transport is to link together different forms of traffic in the most effective way, as well as all operations considering transport. The logistic operator is the only professional to perform complete services in multimodal transport, therefore it was necesarry to enable its further development and, in accordance with that, to suggest suitable solutions. An increase of the existing and the creation of new traffic currents can only be achieved with the development of multimodal transport, the correct selection of logistic operator and better organisation of the traffic system. In the future, the Republic of Slovenia should continue developing multimodal transport in order to decrease the differences in forms of transport in the developed European countries in the shortest time possible.The main task of the Republic of Slovenia is to integrate into the European flows as soon as possible, engage in a reciprocal cooperation by liberalization of flows of commodities and services, and create conditions for the inflow of foreign capital where all advantages of multimodal transport come into consideration. The result of the research is a model of multimodal transport logistic operator connecting the basic elements of that transport.
Ključne besede: logistical operator, rationalization, multimodal infrastructure, multimodal suprastructure, multimodal technologies, multimodal movement of goods, logistical information systems
Objavljeno v DKUM: 02.06.2017; Ogledov: 1268; Prenosov: 106
.pdf Celotno besedilo (5,25 MB)
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56.
Intellectual capital - developmental resource of logistic companies for the 21st century
Ratko Zelenika, Drago Pupovac, 2003, pregledni znanstveni članek

Opis: On the basis of relevant scientific research this paper systematically and concisely elaborates the interaction between intellectual capital and logistic services production. Full attention is given to intellectual capital as a factor in effective creation of the logistic processes or in other words, to prove the statement that the first place for achieving competitive advantages in the global and/or regional market of logistic services belongs to knowledge used to produce or improve the existent logistic systems and to create new ones.Further, the paper deals with the tasks of creative logistic managers as open, dynamic and stochastic systems based on knowledge or the creation of universal logistic model determined by the fact that intellectual capital and technological paradigm create the way to new logistic paradigm.Special attention is paid to building and presenting a mathematical model for measuring the intellectual capital as well as the success of its use in different logistic companies.
Ključne besede: traffic, transport, logistics, developement, intellectual resources, logistic model, mathematical model
Objavljeno v DKUM: 02.06.2017; Ogledov: 946; Prenosov: 198
.pdf Celotno besedilo (2,38 MB)
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57.
Incorporation of duffing oscillator and Wigner-Ville distribution in traffic flow prediction
Anamarija L. Mrgole, Drago Sever, 2017, izvirni znanstveni članek

Opis: The main purpose of this study was to investigate the use of various chaotic pattern recognition methods for traffic flow prediction. Traffic flow is a variable, dynamic and complex system, which is non-linear and unpredictable. The emergence of traffic flow congestion in road traffic is estimated when the traffic load on a specific section of the road in a specific time period is close to exceeding the capacity of the road infrastructure. Under certain conditions, it can be seen in concentrating chaotic traffic flow patterns. The literature review of traffic flow theory and its connection with chaotic features implies that this kind of method has great theoretical and practical value. Researched methods of identifying chaos in traffic flow have shown certain restrictions in their techniques but have suggested guidelines for improving the identification of chaotic parameters in traffic flow. The proposed new method of forecasting congestion in traffic flow uses Wigner-Ville frequency distribution. This method enables the display of a chaotic attractor without the use of reconstruction phase space.
Ključne besede: road traffic, congestion prediction, dynamic system, Wigner-Ville distribution, chaotic identification pattern
Objavljeno v DKUM: 02.06.2017; Ogledov: 1201; Prenosov: 368
.pdf Celotno besedilo (2,57 MB)
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58.
Development harmonisation of mountain resorts ropeway and tourist infrastructures in the Republic of Slovenia
Drago Sever, 200, kratki znanstveni prispevek

Opis: Operation efficiency of mountain resort systems depends largely on harmonious operation of the most important and therefore most influential elements of ropeway transportation and tourist subsystems. Within the framework of a tourist subsystem, the extent and quality of tourist offer for long-staying guests plays an essential role. Harmonised development of the above-mentioned elements ensures major utilisation and better economic management of the entire system so that it may offer quality services. First of all, the system enables permanent and environmentally friendly development of the systems that are as a rule in an absolutely sensitive alpine region. The article deals with some results of in-depth research on the ropeway transportation system and the results of know-how transfer into the actual environment of the Slovenian mountain resorts.
Ključne besede: traffic, transportation, ropeways, infrastructure, mountain tourism, mountain resorts, development, Slovenia
Objavljeno v DKUM: 02.06.2017; Ogledov: 1087; Prenosov: 131
.pdf Celotno besedilo (2,37 MB)
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59.
Human potentials management in transport
Drago Pupavac, Ratko Zelenika, Marinko Jurčević, 2004, kratki znanstveni prispevek

Opis: The paper explores the significance of human potentials management in micro and macro transport systems and investigates to what extent do the human potentials represent the factor of growth and development of transport systems. The facts gathered in this paper should represent the quantitative starting points for viewing the specifics of transport service productions and future movements on the transport labour market, and the possibilities of information technologies implementation in transport human potentials management optimizations, all with the aim of producing new and of improving the inherited comparative advantages of the Croatian transport systems.
Ključne besede: traffic, transport systems, human potential, labour market, information technology
Objavljeno v DKUM: 02.06.2017; Ogledov: 1215; Prenosov: 138
.pdf Celotno besedilo (4,00 MB)
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60.
Dynamic optimization in supply chains
Drago Pupavac, Jasmina Pašagić Škrinjar, Ratko Zelenika, 2007, izvirni znanstveni članek

Opis: Production and stock optimization in supply chains is a complex problem because it determines the optimum quantity production in time. Due to their multileveld nature, those problems are mostly solved by different methods and models of dynamic programming. The problem discussed in this paper refers to the determination of optimum quantity of production and stocks within the supply chain in a certain period of time, as well as in each sub-interval of a period, but with the condition that the production and stock expenditure remains minimal and that the predetermined demand in every sub-interval and throughout the entire observation period remains satisfied.
Ključne besede: transportation, logistics, transportation networks, supply chains, optimization, dynamic programming, traffic
Objavljeno v DKUM: 02.06.2017; Ogledov: 1287; Prenosov: 168
.pdf Celotno besedilo (1,78 MB)
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