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Optimization Criteria in End-of-Life Products Reverse Logistics Network Organisation

100%
Merkisz-Guranowska A., Maciejewski M.
Logistics and Transport
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2013
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vol. 17
25-32
EN
The paper discusses the problem of selection of objective function in modelling of the reverse logistics network entity location. A growing ecological awareness of societies as well as implementing concepts of manufacturer responsibility for their products result in a creation of systems of collecting and treatment of end-of-life products. Rather than being a random process a reverse logistics network should be designed as an effect of informed decisions taking into account all aspects and points of view of the stakeholders. A key issue in network design related to the use of decision support tools based on mathematical optimization is the appropriate selection of the objective function for evaluation of the potential solutions.
2
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Creating a Sustainable Urban Transport – the Ecological Aspect

100%
Merkisz-Guranowska A., Stańko K.
Logistics and Transport
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2015
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vol. 26
83-92
EN
Many European cities have initiated actions in the matter of creating sustainable transport systems that is useful for the society, economical and ecological, through utilization of modes of transport of better environmental performance. Many solutions promoting sustainable transport are being implemented such as electric vehicle rentals, separate infrastructure for collective transport, joint ticket systems, low emission zones or park&ride systems. The paper presents legal regulations and guidelines related to the principles and methods of creation of sustainable urban transport. In second part of paper, actions and measures facilitating the reduction of the impact of transport on the environment carried out by selected European cities are discussed.
3
Content available remote

Location of airports - selected quantitative methods

81%
Merkisz-Guranowska A., Bieńczak M., Kiciński M., Zmuda-Trzebiatowski P.
LogForum
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2016
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vol. 12
|
issue 3
283-295
EN
Background: The role of air transport in the economic development of a country and its regions cannot be overestimated. The decision concerning an airport's 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 airports should be located. Methods: Two main quantitative approaches related to the issue of airport location are presented in this article, i.e. the question of optimizing such a choice and the issue of selecting the location from a predefined set. The former involves mathematical programming and formulating the problem as an optimization task, the latter, however, involves ranking the possible variations. Due to various methodological backgrounds, the authors present the advantages and disadvantages of both approaches and point to the one which currently has its own practical application. 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 the issue of airport location which could enable further development of currently applied methods.
PL
Wstęp: Transport lotniczy obecnie odgrywa ważną rolę, jeśli chodzi o rozwój gospodarczy zarówno kraju, jak i danego regionu. Ewentualna decyzja o jego lokalizacji powinna w maksymalnym stopniu spełniać oczekiwania interesariuszy. Niniejszy artykuł podejmuje tematykę związaną z wyborem lokalizacji portów lotniczych. Metody: W artykule przedstawiono dwa główne ilościowe nurty (podejścia) związane z problematyką lokalizacyjną portów lotniczych (PL), tj. problem optymalizacji wyboru lokalizacji PL oraz problem wyboru lokalizacji spośród z góry zdefiniowanego zbioru. Pierwszy z nich związany jest z programowaniem matematycznym i sformułowaniem problemu jako zadania optymalizacyjnego drugi natomiast zszeregowaniem wariantów Z uwagi na różne podłoże metodyczne autorzy przedstawili wady i zalety obu podejść oraz wskazali tą, która ma obecnie swoje praktyczne zastosowanie. Rezultaty: W artykule, opierając się na rzeczywistych przykładach, zaprezentowano procedurę wieloetapową pozwalającą na rozwiązywanie problemu lokalizacji portów lotniczych. Wnioski: W artykule, wskazano na bazie przeglądu literaturowego trzy koncepcje podejścia do problematyki lokalizacji PL, dzięki którym możliwe byłoby rozwinięcie obecnie stosowanych metod.
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