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Promet - Traffic&Transportation journal

Accelerating Discoveries in Traffic Science

Accelerating Discoveries in Traffic Science

Articles

Vol. 20 No. 2 (2008)
Published on 25.03.2008

Danijela Tuljak-Suban, Elen Twrdy
2008 (Vol 20), Issue 2
The transport of empty containers represents a seriousproblem in the fast growing sphere of maritime container transport.The most widespread type of container transport organizationin maritime transport is the hub and spoke mode, whichenables the transport of a great number of containers via largevessels between hub ports, from where feeder ships transport tosmaller ports that thus gravitate to the central hub port. The articlecontains a detailed analysis of the northern Adriatic portsand the feeder connections with the hub ports of the Mediterranean.A two-level VRPPD (Vehicle Routing Problem withPickup and Delivery) problem is modelled on a graph, wherethe transport of full containers is privileged over the transport ofempty containers. This enables the simulation of the feeder systemin the n01them Adriatic, meaning that it shows the ship'soperator the movement programme with minimal transportcosts for the superfluous empty containers in the complex of theregular transports of full containers in the feeder system.

Andrej Lisec, Bojan Rosi, Zvonko Kavran
2008 (Vol 20), Issue 2
Modern complexity of management is associated with importantdecision making, confronting a great number of uselessinformation. Selection of information- the choice of only qualityones, i. e. essential ones, is a big problem in management decision-making. Implementation of systemic approach i. e. dialectical-network thinking (DNT) can help to deal with it. Thepaper presents a holistic thinking approach in a case study forthe Slovenian parcel postal problem. The volume of parcelflows at the Post of Slovenia between Posts is increasing rapidlyand it requires a new design of the postal network. This paperpresents a reorganization of parcel services between Postal LogisticsCenters and Posts by adding Regional Parcel Centersand Parcel Posts to the network. A case for the area covered byLjubljana Postal Logistics Center is given, which takes intoconsideration the sorting out and the retaining of parcels in thePosts, Parcel Posts and Regional Parcel Centers within their individualareas.

Tomislav Crnković, Ernest Bazijanac, Danko Basch
2008 (Vol 20), Issue 2
A simulation model of the radar network operation of fivemilitary radar stations has been developed. Simulation waspeiformed in GPSS language and contains the time of operationof five radars through a period of one year, time of plannedpreventive maintenance, irregularities, time of corrective maintenanceand maintenance team(s). The simulation shows theinfluence of the number of maintenance teams on the availabilityof each radar and presents a good orienteering point fordefining the optimal model of preventive and corrective maintenanceof the radar network.

Islam El-Nakib, Charles Roberts
2008 (Vol 20), Issue 2
The role of supply chains has been significant in strengtheningthe competitiveness of interna tiona[ trade among countries.Regional Distribution Centres (RDCs) are among the remarkabledrivers of any international trade supply chains. The Egyptianexports face severe competition in the international marketwhich has led the Egyptian government to join regional tradeblocks such as the Common Market for Eastern and SouthernAfrica (COMESA) for the aim of establishing export channelsto new markets. Therefore, applying the concept of RDCs wasexamined to enhance the performance of Egyptian exportswhich are facing high competition in the EU, US, and Asianmarkets. Thus, the purpose of this research is to study the associatedaspects to this area of interest based on a survey whichhas targeted the Egyptian exporters who are directly dealingwith the CO MESA to cover several issues regarding the tradebetween Egypt and CO MESA. Moreover, this survey has alsoincluded the analysis of the reasons that make the CO MESAprefer other international products rather than the Egyptianproducts, and the attitudes towards the proposed selection ofEgypt's RDCs in COMESA. In addition, this survey is alsoidentifying the main features of the Egyptian exports comparedwith the foreign exports in COMESA and the recommendedaction to be taken towards the establishment of the EgyptianRDCs in CO MESA.

Kristijan Rogić, Branislav Šutić, Goran Kolarić
2008 (Vol 20), Issue 2
Fleet management systems are increasingly changing invarious transport companies. Although according to claims ofdifferent producers, the usage of such systems can achieve greatsavings in the business operation, the studies show that for optimalfunctioning of such systems it is necessary to carry out theevaluation of the company and the very systems according toseveral criteria. The methodology that allows the FM implementationwithin the transport companies starts from the analysisof the characteristics of carriers, characteristics ofprogramme packages, which is followed by the evaluation accordingto several criteria which influence the final choice. Theobjective of such approach is the adaptation to the users' requirementswhich eventually results in the improvement andsavings in the operation.

Dejan Paliska, Jurij Kolenc
2008 (Vol 20), Issue 2
This article uses a statistical approach to examine the bussystem reliability in the city of Koper. Four statistical modelswere developed using OLS to explain the effect of different variableson system reliability. The results indicate that the operatorhas no serious problems with maintaining system reliability,and that the most important factors affecting reliability are delayvariation at previous time point and cumulative distancefrom route origin. Although the available data were not complete,the results presented appear to be accurate. The resultsobtained from the developed models could be used to estimatebus delays under various conditions.

Gregor Veselko, Igor Jakomin
2008 (Vol 20), Issue 2
The background of the paper is the substantial developmentin international business with special regard to globalizationand business internationalization going on over the pastfew years. The latest has put many companies facing big challengesand devised methods for their sustainable incorporationin global supply chains. The purpose of the paper is to help outthe reader and explain the major effects the globalization andbusiness internationalization have on business strategy formationand its implementation. Coordinating business strategyhas become one of the key elements for international competitiveattractiveness. The final goal of the paper is to make a logicalconnection between supply chain management strategy andcorporate strategy. The results of the paper confirm the basicimplication that the supply chain management strategy andc01porate strategy must be coordinated and implemented accordingto certain requirements, considering that the sustainablecorporate strategy is the logical consequence of a thoroughlyexamined and properly understood supply chain managementstrategy.

Jasmina Pašagić Škrinjar, Čedomir Ivaković, Ljupko Šimunović
2008 (Vol 20), Issue 2
Logistic approach to traffic means new business policy,economy and ownership, new internal organization, externaland internal communication, different corporate cultures, humanresources management using scientific methods, trainingand education, changed management type and awarding system,knowledge of information technology, communicationskills, electronic commerce, etc. Education is part of all theseelements. The introduction of logistics in all the business activitieshas been imposed due to the following reasons: because ofthe life-cycle shortening of the product and its delivery, becauseof sudden technological development, because of productionand market globalization, because of the increase in competitiveness.This paper describes first various logistic activities with theindication of practical and scientific approaches. The logisticsapproach in the traffic activities requires upgrading of the professionaland scientific level to a higher one which means additionaltraining and acquiring of new skills as well as new technologiesfor the employees.The basic aim of research was to specifY the basic logisticsactivities and problems in order to indicate the need of differentforms of education. Fast technological and social changes requireconstant improvement and modification of professionalknowledge and acqui1ing of new scientific methods and skills.


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