Marcin Kiciński

Selection of the most adequate trip-modelling tool for integrated transport planning system

This paper deals with the problem of selection the most suitable trip-modelling tool (TMT), which is a part of the more complex integrated transport planning system (ITPS) at the regional scale. Since an application of TMT is not autonomous and several different users exist the selection problem is not a trivial. In this paper, an original five-phase selection procedure is presented. The first phase consists in specification of both, detailed expectations of all identified users and technical requirements of ITPS. Second phase deals with research on available TMT while a third one is concentrated on defining a comprehensive set of criteria. In this phase critical criteria as well as selection criteria are defined. First one is utilised to eliminate unacceptable TMTs in phase four and second one to evaluate and select most adequate TMT in phase five. In the paper an exemplary application of this procedure is presented. The authors have defined 2 critical criteria and a set of 19 selection criteria. The last one is divided into 3 main subsets, i.e. functional, technical and financial contexts of selection process. All the selection criteria are characterised by 43 sub-criteria and some of them are more detailed extended. Using this procedure 3 out of 6 alternative TMTs including Emme, Aimsun and Visum have been initially accepted and next evaluated. Finally, Visum has been selected and recommended for application into ITPS.

Multiple Criteria Optimization for Supply Chains – Analysis of Case Study

Completing of a production process in any enterprise requires designing of a proper supply chain. Its non-compliance with the ever-changing client needs may result in a variety of problems that are perceived in different ways by different stakeholders when attempting to resolve a decision problem. The paper presents an example solution of a problem related to planning of supplies of components of a final product. The proposed non-linear, deterministic mathematical model of a decision problem includes a set of 5 criteria: costs of warehousing, transport, stock in transit and the criterion of time of transport and warehouse efficiency. Such an approach allowed including various aspects of the enterprise operation and the operation of its individual departments such as supplies department, warehouse department, marketing/sales department and management.

Location of airports - selected quantitative methods

Background: The role of air transport in the economic develop ment of a country and its regions cannot be overestimated. The decision concerning an airpor ts location must be in line with the expectations of all the stakeholders involved. This article deals with the issues related to the choice of sites where airpor ts should be located. Methods: Two main quantitative approaches related to the is sue of airport location are presented in this artic le, i.e. the question of optimizing such a choice and the issue of selecting the location from a predefined set. Th e former involves mathematical programming and formulating the proble m as an optimization task, the latter, however, inv olves ranking the possible variations. Due to various methodologi cal backgrounds, the authors present the advantages nd disadvantages of both approaches and point to the o ne which currently has its own practical applicatio n. Results: Based on real-life examples, the authors present a multi-stage procedure, which renders it possible to solve the problem of airport location. Conclusions: Based on the overview of literature of the subject, the authors point to three types of approach to th e issue of airport location which could enable further deve lopment of currently applied methods.