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1.
Reconstruction of delivery positions in the city of Celje, Slovenia
Dejan Dragan, Klemen Prah, Tea Vizinger, Marko Intihar, Maja Fošner, Tomaž Kramberger, 2013, izvirni znanstveni članek

Opis: The paper addresses the problem of the reconstruction and allocation of delivery positions in the urban area. The aim is to achieve the optimal reorganization of urban freight transport in old town core in the municipality of Celje. Optimal allocation relies on optimization based on the Monte Carlo simulation and represents a first stage of a two-stage optimization approach to re-design the existing urban freight transport. The number of optimal delivery positions is required to be as minimal as possible, which can still assure a maximal service area within the prescribed radius, while keeping the minimal walking distances of delivery personnel between the nearest delivery position and the customerʼs physical location. The main issues of the used heuristic allocation algorithm and the presentation of calculated results are provided. In the near future, the calculated delivery positions are going to be used for the purpose of physical implementation in order to improve the existing delivery transport.
Ključne besede: urban transport problems, urban freight transport, delivery, optimization, maximum location covering problems, MLCP, Monte-Carlo simulation
Objavljeno: 10.07.2015; Ogledov: 922; Prenosov: 110
.pdf Celotno besedilo (999,26 KB)
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2.
GHG emissions reduction based on a heuristic optimization approach
Dejan Dragan, Klemen Prah, Tomaž Kramberger, Maja Fošner, 2013, objavljeni znanstveni prispevek na konferenci

Opis: Since the transport causes about 26% of global CO2 emissions, the need to reduce greenhouse gas emissions (GHG) is becoming increasingly necessary. To achieve this objective, several approaches were adopted, like for example the employment of alternative sustainable technologies, or the enforcement of changes in driving skills. In contrast with this kind of approaches, an interesting approach is to reduce the vehicle miles of travel (VMT). In this paper, the concept of VMT reduction based on a heuristic optimization approach is introduced. The suitability of this concept has been tested for the School Bus Routing Problem (SBRP). Working mechanisms of the adopted heuristic optimization algorithms are briefly explained. As can be seen from the results, the optimization of bus stops, bus routes and driving schedules can significantly reduce the amount of VMT and consequently the amount of CO2 emissions.
Ključne besede: transport planning, environment, heuristic optimization approach, school bus routing problem
Objavljeno: 10.07.2015; Ogledov: 1131; Prenosov: 35
URL Povezava na celotno besedilo

3.
Modelling operational, economic and environmental performance of an air transport network
Milan Janić, 2003, izvirni znanstveni članek

Opis: The paper models the operational, economic and environmental performance of an air transport network consisting of airports and air routes connecting them. The operational capacity represents the operational performance. Thresholds on the networkćs environmental burdens reflect the environmental performance. The economic performance comprises the networkćs profits. Modelling the network performance includes using integer programming techniques to maximise total network profits for given operational capacity and environmental constraints under conditions where environmental externalities are internalised.
Ključne besede: air transport network, performance, capacity, environment, profits, externalities, optimization
Objavljeno: 05.06.2012; Ogledov: 915; Prenosov: 80
URL Povezava na celotno besedilo

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