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1.
Simulation model of multi-shuttle automated storage and retrieval systems
Iztok Potrč, Tone Lerher, Janez Kramberger, Matjaž Šraml, 2004, izvirni znanstveni članek

Opis: Automated storage and retrieval systems (AS/RS) brought to industry the advantages of faster storages and retrieval of products, efficient utilizationof storage space, high reliability and better control inventory, improved safety and decrease in damages of products. Therefore AS/RS which areused in manufacturing, warehousing and distribution centers have to be designed to provide quick response for storages and retrievals of products in order to keep the system operating efficiently. Heuristics travel time models for AS/RS with equal-sized cells in height and randomized storage under single- and multi-shuttle system are presented in this paper. The main contribution of proposed model is the implementation of the "Strategy x" and determination of relationship between average travel times and throughput capacity for different types of high storage racks and velocity profiles of storage retrieval machine.
Ključne besede: transport systems, high storage rack, automated warehousing, discrete event simulation, storage location assignment policies
Objavljeno: 01.06.2012; Ogledov: 1286; Prenosov: 61
URL Povezava na celotno besedilo

2.
Multicriteria evaluation of high-speed rail, transrapid Maglev and Air passenger transport in Europe
Milan Janić, 2003, izvirni znanstveni članek

Opis: This article deals with a multicriteria evaluation of High-Speed Rail, Transrapid Maglev and Air Passenger Transport in Europe. Operational, socio-economic and environmental performance indicators of the specific high-speed transport systems are adopted as the evaluation criteria. By using the entropy method, weights are assigned to particular criteria in order to indicate their relative importance in decision-making. The TOPSIS method is applied to carry out the multicriteria evaluation and selection of the preferable alternative (high-speed system) under given circumstances.
Ključne besede: high-speed transport systems, Europe, multicriteria analysis, entropy method, interest groups
Objavljeno: 05.06.2012; Ogledov: 1447; Prenosov: 73
URL Povezava na celotno besedilo

3.
Načrtovanje avtomatiziranih regalnih skladiščnih sistemov z uporabo simulacijskega postopka
Iztok Potrč, Tone Lerher, Janez Kramberger, Matjaž Šraml, 2004, izvirni znanstveni članek

Opis: V prispevku je predstavljen simulacijski model avtomatiziranega regalnega skladiščnega sistema z enojno pomično in večpomičnimi mizami. Glavni namen predstavljene raziskave je določitev zmogljivosti sistema z večpomičnimi mizami, glede na sistem z enojno pomično mizo. Slednje pomeni glavni delež in pomoč pri postopku načrtovanja avtomatiziranega regalnega skladiščnega sistema. Povečanje pretočne zmogljivosti transportno-skladiščnih enot je mogoče z uporabo sistema z večpomičnimi mizami, glede na sistem z enojno-pomično mizo. V inženirski praksi se največkrat uporablja sistem z enojno pomično mizo, ki temelji na dvojnem delovnem krogu, medtem ko sistem z večpomičnimi mizami temelji na štirikratnem in šestkratnem delovnem krogu. Problem se pojavi pri uporabi ustrezne upravljalne strategije, za zagotovitev pogoja o najmanjših vožnjah regalnega dvigala. V ta namen smo uporabili posebno domiselno metodo, poimenovano "Strategija x", ki razvrsča zaporedje skladiščnih in odpremnih zahtev, z namenom po minimizaciji povprečnega časa vožnje regalnega dvigala. Za ovrednotenje domiselne metode s sistemom večpomičnih miz smo uporabili tehniko diskretnih numeričnih simulacij. Rezultati simulacijske analize so pokazali očitno povečanje pretočnih zmogljivosti sistema z večpomičnimi mizami v primerjavi s sistemom enojne pomične mize.
Ključne besede: transport systems, high storage racks, automated warehousing, discrete event simulation, storage operation, performance analysis
Objavljeno: 10.07.2015; Ogledov: 694; Prenosov: 21
URL Povezava na celotno besedilo

4.
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: 02.06.2017; Ogledov: 392; Prenosov: 40
.pdf Celotno besedilo (4,00 MB)
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5.
Multimodal transport operator liability insurance model
Ratko Zelenika, Tomaž Lotrič, Ervin Bužan, 2011, kratki znanstveni prispevek

Opis: Multimodal transportation means transporting goods from a pickup point, where the operator receives the goods, all the way to the delivery location, using at least two different means of transportation, covered under the same multimodal transport contract and by only one document, regardless of the number or type of transportation vehicles used. The key factor to the optimal operation of multimodal transportation is the multimodal transport operator. It is up to this individual to compensate for various unpredictable circumstances, the complexity of the business processes, nature’s whims and carelessness. He must also organize and execute multimodal transport in all stages. Due to the above mentioned dangers and the fact that the area of liability insurance for multimodal transport operators is still being neglected, this article raises some valid points in favour of a proposal that would cover all of the transportation means as well as all the accompanying activities with a single insurance policy. The model includes 17 elements of liability insurance for a multimodal transport operator and all values which quantify the insurance elements in 2009 as well as the projected values for 2015, when progress is expected in the areas pertaining to the implementation of economical processes concerning transit development, as well as values for 2025, representing a period of innovation, reconstruction, optimization and modernization. With this supposed model for liability insurance of a multimodal transport operator, the foundation is laid for a liability insurance which would be used by a multimodal transport operator.
Ključne besede: transport insurance, multimodal transport, multimodal transport operator, multimodal transport operator liability systems
Objavljeno: 05.06.2017; Ogledov: 379; Prenosov: 205
.pdf Celotno besedilo (430,14 KB)
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6.
Transport
Borut Jereb, Matjaž Knez, Darja Kukovič, Tina Cvahte, Matevž Obrecht, Anna Kasantseva, 2016, samostojni znanstveni sestavek ali poglavje v monografski publikaciji

Opis: Traffic growth is strongly fuelled by economic growth, because without an efficient transport system the internal market and the globalization of trade cannot fully be exploited. The growth of traffic is affected primarily by two factors, namely in the passenger traffic by the increased use of cars, whereas in freight transport the traffic growth was affected by changes in the economy. The economic growth will lead to increased need for mobility; it is estimated that demand will increase by 38% for freight transport services and by 24% for passenger transport (European Commission, 2001).
Ključne besede: transportation, transport systems, logistics, modelling, environmental protection
Objavljeno: 10.05.2018; Ogledov: 211; Prenosov: 25
.pdf Celotno besedilo (963,63 KB)
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