نوع مقاله : مقاله پژوهشی
نویسندگان
1 کارشناسیارشد مهندسی صنایع، گروه مهندسی صنایع، دانشکدۀ مهندسی، دانشگاه کردستان، سنندج، ایران
2 استاد گروه مهندسی صنایع، دانشکدۀ مهندسی، دانشگاه کردستان، سنندج، ایران
3 دانشیار گروه مهندسی صنایع، دانشکدۀ فنیومهندسی، دانشگاه اراک، اراک، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Spoilage is a common phenomenon affecting many real-world products over time, if ignored, it imposes additional costs on inventory systems and can disrupt the decision-making process. Therefore, improving the supply chain system can significantly reduce costs and increase efficiency. This study develops a multi-product, three-echelon mixed-integer linear programming model under uncertainty, involving suppliers, cross-docks, and customers. A bi-objective model is considered: the first objective minimizes transportation, location, and routing costs, while the second aims to minimize total delivery time. Given the growing importance of the Internet of Things in logistics systems, both products and vehicles are assumed to be equipped with RFID technology. This allows the monitoring of temperature and shelf-life of perishable items at each stage of the supply chain, ensuring safe storage and delivery conditions for producers and consumers. To solve the model, the Torabi- Hassini method is employed to convert the bi-objective model into a single-objective one, and the Molaei robust optimization approach is applied to handle uncertainty. A sensitivity analysis is conducted, and the results of the deterministic and robust models are compared. Findings reveal that while RFID reduces delivery time in the deterministic model, it leads to increased cost and time in the robust model. However, the robust model with RFID offers greater flexibility under uncertainty and is recommended for time-sensitive supply chains despite its higher cost. Moreover, the robust model avoids feasibility and optimality issues commonly encountered in non-robust models, making it a practical tool for real-world applications.
کلیدواژهها [English]