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Operations Research and Decisions

Identifiers

ISSN 2081-8858
e-ISSN 2391-6060

Publisher

Oficyna Wydawnicza Politechniki Wrocławskiej

Editorial office

Wydział Informatyki i Zarządzania Politechniki Wrocławskiej

Additional information

Data set: BazTech

Title history

Articles

article

The domination over time and its discretisation

Nazanin Abbasnezhad, Javad Mehri-Takmeh, Javad Vakili

Operations Research and Decisions > 2020 > Vol. 30, No. 1 > 5--24

Domination in graphs is well known and has been an extensively researched branch of graph theory. Since the variation over time is one of the important properties of real-world networks, we study the influence of time on the domination problem. In this paper, we introduce the domination over time problem, including time delay on arcs. Then, an optimal solution to its discretisation is obtained, which...
article

A fuzzy approach to multi-objective mixed integer linear programming model for multi-echelon closed-loop supply chain with multi-product multi-time-period

Sema Akin Bas, Beyza Ahlatcioglu Ozkok

Operations Research and Decisions > 2020 > Vol. 30, No. 1 > 25--46

By the green point of view, supply chain management (SCM), which contains supplier and location selection, production, distribution, and inventory decisions, is an important subject being examined in recent years by both practitioners and academicians. In this paper, the closed-loop supply chain (CLSC) network that can be mutually agreed by meeting at the level of common satisfaction of conflicting...
article

Risk estimation and decision making in management (in selected areas of science)

Tadeusz Galanc, Wiktor Kołwzan, Jerzy Pieronek, Agnieszka Skowronek-Grądziel

Operations Research and Decisions > 2020 > Vol. 30, No. 1 > 47--66

Risk is a category that is inseparably connected with uncertainty and probability, which means that the nature of risk as a category of science is complex, and the concept of risk is very difficult to define by one conceptual system of modern science. Due to the above, the main research hypothesis of the work is oriented to the assumption that the complexity of the risk category is determined by the...
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