1. Sustainable developement in logistic : a strategy for management in terms of green transportDorota Klimecka-Tatar, Manuela Ingaldi, Matevž Obrecht, 2021, original scientific article Abstract: Supply chain management is one of the most important elements of sustainable development. And due to the fact that the world market is driven by supply and demand, and the determinant of access to products is regional and international logistics, this paper focuses on the possibilities of implementing a green transport strategy in the context of sustainable development in logistic enterprises. This paper presents the results of the SWOT anal-ysis pointing out the strengths, weaknesses, opportunities, threats of green vehicles market for the transport enterprises. It was noticed that the situation on the green vehicles market for the transport enterprises is charac-terized by the advantage of strengths and these strengths should be used to maximize the use of green vehicles. It emphasized that subsidies for green vehicles would allow to invest in a modern fleet, new solutions (e.g. own charging stations) can have an impact on the greater energy efficiency (self-sufficiency), increase of social aware-ness would force enterprises to take appropriate actions in the field of environmental protection and develop-ment of publictransport based on green vehicles.
Keywords: logistic enterprises, green transport strategy, green vehicles, SWOT analysis, environmental protection, sustainable development, green logistics, sustainability
Published in DKUM: 27.08.2024; Views: 66; Downloads: 6
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2. A multi-objective solution of green vehicle routing problemÖzgür Kabadurmuş, Mehmet Serdar Erdoğan, Yiğitcan Özkan, Mertcan Köseoğlu, 2019, original scientific article Abstract: Distribution is one of the major sources of carbon emissions and this issue has been addressed by Green Vehicle Routing Problem (GVRP). This problem aims to fulfill the demand of a set of customers using a homogeneous fleet of Alternative Fuel Vehicles (AFV) originating from a single depot. The problem also includes a set of Alternative Fuel Stations (AFS) that can serve the AFVs. Since AFVs started to operate very recently, Alternative Fuel Stations servicing them are very few. Therefore, the driving span of the AFVs is very limited. This makes the routing decisions of AFVs more difficult. In this study, we formulated a multi-objective optimization model of Green Vehicle Routing Problem with two conflicting objective functions. While the first objective of our GVRP formulation aims to minimize total CO2 emission, which is proportional to the distance, the second aims to minimize the maximum traveling time of all routes. To solve this multi-objective problem, we used �-constraint method, a multi-objective optimization technique, and found the Pareto optimal solutions. The problem is formulated as a Mixed-Integer Linear Programming (MILP) model in IBM OPL CPLEX. To test our proposed method, we generated two hypothetical but realistic distribution cases in Izmir, Turkey. The first case study focuses on an inner-city distribution in Izmir, and the second case study involves a regional distribution in the Aegean Region of Turkey. We presented the Pareto optimal solutions and showed that there is a tradeoff between the maximum distribution time and carbon emissions. The results showed that routes become shorter, the number of generated routes (and therefore, vehicles) increases and vehicles visit a lower number of fuel stations as the maximum traveling time decreases. We also showed that as maximum traveling time decreases, the solution time significantly decreases.
Keywords: green vehicle routing problem, alternative fuel vehicles, epsilon-constraint, multi-objective optimization, Pareto optimality
Published in DKUM: 22.08.2024; Views: 44; Downloads: 9
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3. Policies for promotion of electric vehicles and factors influencing consumers' purchasing decisions of low emission vehiclesMatjaž Knez, Matevž Obrecht, 2017, original scientific article Abstract: Recently different studies of green transport have become interesting for policy makers, car manufacturers, customers and energy suppliers. Many stakeholders from the public and private sectors are investing a lot of effort to identify consumer behaviour for future improvements in development of green products and effective strategies, which could accelerate the transition to sustainable future. This paper presents the effects of electric vehicle promotional policies and customer preferences about alternative fuel vehicles. This study has shown that the electric vehicle promotional policies adopted in Slovenia have been unsuccessful, as the share of first-time registered electric vehicles in 2013 was below 1%. For different segments of people whose opinions about low emission vehicles differ, different measures must be adopted. When designing promotional policies focus must be on the most relevant factors such as the total vehicle price and fuel economy.
Keywords: policies, low emission vehicles, electric vehicles, purchasing, consumers, green logistics, green transport, Slovenia
Published in DKUM: 04.08.2017; Views: 1509; Downloads: 527
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