Sürdürülebilir tedarik zinciri sistemlerinin modellenmesi ve analizi

Sustainability is an important requirement in the design and operation of supply chain systems. All of the decisions involved in a sustainable system must incorporate three pillars ? namely the economic, environmental and social pillars. Moreover, considering these three pillars simultaneously is termed as triple bottom line accounting. Classical research in the field of supply chain and operations management has focused on pure-economical objectives. Therefore, in order to achieve sustainability in supply chain management, a sustainable decision-making methodology must be adopted. This methodology requires incorporation of environmental and social dimensions in addition to conventional economics in the decision-making process.In this study, a methodological approach to address sustainable supply chain management problem is proposed that conforms to the above triple bottom line accounting. The proposed approach is based on the revision of standard mathematical programming (optimization) models of classical supply chain and operations management problems with environmental and social factors and the analysis of these revised models. The method is applied to three main decision-making problems and four corresponding standard models from the literature: (i) economic order quantity and newsvendor models for the inventory control problem (ii) aggregate planning model for the production planning problem (iii) uncapacitated facility location model for the network design problem.The proposed approach illustrates how environmental and social factors can be integrated with the traditional cost accounting in order to achieve sustainability in supply chain management. Furthermore, the analysis of the revised models shows that the optimal policy and the resulting performance measures proposed by pure-economical models change substantially under triple bottom line accounting.