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Sustainable supply chains modeling

Pupavac Drago

LogForum

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2022

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Vol. 18, no. 4

471--480

EN

Background: Although existing studies have highlighted the importance of modeling sustainable supply chains, there is a scarcity of research that integrates environmental, social, and economic dimensions simultaneously. Accordingly, this paper aims to explore the possibilities of creating and modeling sustainable supply chains in the trefoil of economic, environmental, and social sustainability. Methods: For creating and modeling optimal sustainable supply chains, we used the mathematical method of dynamic programming. The method of dynamic programming was chosen for the reason that dynamic programming represents a set of special mathematical methods that serve to optimize multi-stage or multi-phase processes. Results: Minimum costs of the supply chain in the given example are achieved when the problem is solved from an economic perspective or from the perspective of total costs. Solving the problem from an ecological or social perspective increases the costs of the supply chain compared to optimal solutions, by 16.05% if the problem is solved from an ecological perspective and by 14.31% if the problem is solved from a social perspective. Conclusions: Contemporary sustainable supply chains are forced to include in their logistics network only those participants who can satisfy the principles of integral sustainability, i.e. respecting the economic, ecological and social dimensions.

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Transport – an Instrument for Globalization

Witte Hermann

Logistics and Transport

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2019

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Vol. 43, No. 3

81--86

EN

Transport is generally an instrument for globalization. It is not possible to use transport as an instrument for de-globalization. For compensating the negative effects of globalization on regional and local markets, a world-wide sustainable development process is to be started. This is an idea propagated by United Nations since the publishing of the Brundtland-Report. Sustainability has three components: the social, the ecological and the economic sustainability. Economic sustainability is realized when the (transport) enterprises make no profits and setting the prices is following a price-wage-rule. This rule postulates that the price and wage have to be equal. However, transport can also set incentives for social and ecological sustainability. Transport is no instrument for de-globalization, but an important instrument for compensating the negative effects of globalization. The measures which transport policy has to realize sustainability are not new, but we need to a new world-wide concept for transport policy. We have to accept, that the world is one economic area and not more than two hundred areas. We need only one set of economic rules and not over hundred different sets of rules.

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Rola trwałych użytków zielonych w zapewnieniu stanu równowagi ekologicznej środowiska przyrodniczego

Burczyk P., Gamrat D., Gałczyńska M., Saran E.

Woda-Środowisko-Obszary Wiejskie

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2018

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T. 18, z. 3

21--37

EN

Maintaining permanent grassland contributes to the preservation of biodiversity. They also play an important role in the greenhouse gas balance. By storing soil organic matter and humus, they improve the structure of the soil, its ability to store water and resistance to erosion. Because of their functions, meadows are an important factor limiting hazards and contribute to maintaining the balance of the natural environment. This paper presents a query of the literature on the subject in order to present the results of studies on the functions performed by permanent grassland in the economy, environmental protection and the countryside landscape.

PL

Utrzymanie trwałych użytków zielonych (TUZ) przyczynia się do zachowania różnorodności biologicznej. Odgrywają one także istotną rolę w bilansie gazów cieplarnianych. Poprzez magazynowanie glebowej substancji organicznej i próchnicy poprawiają strukturę gleby, jej zdolność magazynowania wody i odporność na erozję. Ze względu na pełnione funkcje łąki są istotnym czynnikiem ograniczającym zagrożenia i przyczyniają się do zachowania równowagi środowiska przyrodniczego. W pracy przedstawiono kwerendę literatury przedmiotu w celu przedstawienia wyników opracowań z zakresu pełnionych funkcji przez trwałe użytki zielone w gospodarce, ochronie środowiska i krajobrazie terenów wiejskich.