فهرس المقالات Integrated supply chain

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  1 - A Multi-Objective Fuzzy Approach to Closed-Loop Supply Chain Network Design with Regard to Dynamic Pricing
  Soroush Avakh Darestani Faranak Pourasadollah
  10.22094/joie.2018.476.0
  During the last decade, reverse logistics networks received a considerable attention due to economic importance and environmental regulations and customer awareness. Integration of leading and reverse logistics networks during logistical network design is one of the mos أکثر

  During the last decade, reverse logistics networks received a considerable attention due to economic importance and environmental regulations and customer awareness. Integration of leading and reverse logistics networks during logistical network design is one of the most important factors in supply chain. In this research, an Integer Linear Programming model is presented to design a multi-layer reverse-leading, multi-product, and multi-period integrated logistics network by considering multi-capacity level for facilities under uncertainty condition. This model included three objectives: maximizing profit, minimizing delay of goods delivering to customer, and minimizing returned raw material from suppliers. This research gives financial incentives to encourage customers in order to return their used product. Considering that the remaining value of used products is the main incentive of a company to buy second-handed goods, a dynamic pricing approach is determined to define purchase price for these types of products, and based on that, the percentage of returned products were collected by customers. In addition, in this study, parameters have uncertainty features and are vague; therefore, at first, they are converted into exact parameters and, then, because model is multi-objective, the fuzzy mathematical programming approach is used to convert multi-objective model into a single objective; finally, the model by version 8 of Lingo is run. In order to solve a large-sized model, a non-dominated sorting genetic algorithm II (NSGA-II) was applied. Computational results indicate the effect of the proposed purchase price on encourage customers to return the used products. تفاصيل المقالة
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  2 - Modelling Integrated Multi-item Supplier Selection with Shipping Frequencies
  Abolfazl Kazemi Danial Esmaeili Aliabadi
  There are many benefits for coordination of multiple suppliers when single supplier cannot satisfy buyer demands. In addition, buyer needs to purchase multiple items in a real supply chain. So, a model that satisfies these requests has many advantages. We extend the exi أکثر

  There are many benefits for coordination of multiple suppliers when single supplier cannot satisfy buyer demands. In addition, buyer needs to purchase multiple items in a real supply chain. So, a model that satisfies these requests has many advantages. We extend the existing approaches in the literature that assume all suppliers need to be put on a common replenishment cycle and each supplier delivers exactly once in a cycle. More specifically, inspired by approaches that perform well for the Economic Lot Scheduling Problem, we assume an integer number of times a supplier can ship available items in an overall replenishment cycle. Because of complexity issue, a new approach based on genetic algorithm is employed to solve the presented model. Results depict that new model is more beneficial and practical. تفاصيل المقالة
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  3 - Facility Location and Inventory Balancing in a Multi-period Multi-echelon Multi-objective Supply Chain: An MOEA Approach
  Seyed Habib A. Rahmati Abbas Ahmadi Behrooz Karimi
  A comprehensive and integrated study of any supply chain (SC) environment is a vital requirement that can create various advantages for the SC owners. This consideration causes productive managing of the SC through its whole wide components from upstream suppliers to do أکثر

  A comprehensive and integrated study of any supply chain (SC) environment is a vital requirement that can create various advantages for the SC owners. This consideration causes productive managing of the SC through its whole wide components from upstream suppliers to downstream retailers and customers. On this issue, despite many valuable studies reported in the current literature, considerable gaps still prevail. These gaps include integration and insertion of basic concepts, such as queuing theory, facility location, inventory management, or even fuzzy theory, as well as other new concepts such as strategic planning, data mining, business intelligence, and information technology. This study seeks to address some of these gaps. To do so, it proposes an integrated four-echelon multi-period multi-objective SC model. To make the model closer to the real world problems, it is also composed of inventory and facility location planning, simultaneously. The proposed model has a mixed integer linear programming (MILP) structure. The objectives of the model are reducing cost and minimizing the non-fill rate of customer zones demand. The cost reduction part includes cost values of raw material shipping from suppliers to plants, plant location, inventory holding costs in plants, distribution cost from plants to warehouses or distribution centers (DCs), and shipping costs from DCs to customer zones. Finally, since the literature of SC lacks efficient Pareto-based multi-objective evolutionary algorithms (MOEAs), a new multi-objective version of the biogeography-based optimization algorithm (MOBBO) is introduced to the literature of the SC. The efficiency of the algorithm is proved through its comparison with an existing algorithm called multi-objective harmony search (MOHS). تفاصيل المقالة
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  4 - تعیین میزان تأثیر ابعاد یکپارچگی زنجیره تأمین روی توانمندیهای رقابتی
  سید حسام وقفی علی فیاض محمد مهدی قمیان
  این مطالعه تأثیر ابعاد زنجیره تأمین یکپارچه را بر توانمندی های رقابتی بررسی میکند. زنجیره تأمین یکپارچه، درجه ای است که تولیدکننده به طوراستراتژیک با شرکای زنجیره تأمین خود تشریک مساعی کرده و فرآیندهای داخل و خارج سازمانی را به منظور دستیابی به جریانات مؤثر و کارا ازمحص أکثر

  این مطالعه تأثیر ابعاد زنجیره تأمین یکپارچه را بر توانمندی های رقابتی بررسی میکند. زنجیره تأمین یکپارچه، درجه ای است که تولیدکننده به طوراستراتژیک با شرکای زنجیره تأمین خود تشریک مساعی کرده و فرآیندهای داخل و خارج سازمانی را به منظور دستیابی به جریانات مؤثر و کارا ازمحصولات و خدمات، اطلاعات، پول و تصمیمات جهت فراهم کردن بیشترین ارزش برای مشتری، به صورت مشارکتی مدیریت می کنند. این مطالعهرابطه بین ابعاد زنجیره تأمین یکپارچه و توانمندی های رقابتی را بررسی می کند. برای دستیابی به این هدف، رابطه بین ابعاد زنجیره تأمین یکپارچه(یکپارچگی داخلی و یکپارچگی خارجی) و توانمندیهای رقابتی (هزینه، کیفیت، تحویل، نوآوری محصول) با استفاده از یک مدل مفهومیموردبررسی قرار گرفته است. ابزار جمعآوری این تحقیق شامل پرسشنامه محقق ساخته می باشد و نمونه آماری شامل 44 نفر از مدیران شرکتها و سازمان-های صنایع و معادن خراسان رضوی است که از بین پاسخگویان 44 نفر مرد ) 59 %( و 4 نفر زن ) 9%( بودهاند. نتایج حاصل از آزمون فرضیات نشان می دهدکه به طورکلی یکپارچگی داخلی و خارجی اثر غیرمستقیم و معناداری به ترتیب به میزان 0.17 و 0.75 بر توانمندی های رقابتی دارند. به عبارت دیگر، نتایجنشان می دهد که یکپارچگی داخلی پیش نیازی برای یکپارچگی خارجی می باشد. مطالعه همچنین نشان می دهد که یکپارچگی داخلی و یکپارچگی خارجیتأثیر مثبتی روی بهبود توانمندی های رقابتی شرکت دارند. قابلذکر است که یکپارچگی داخلی توانمندی های رقابتی را از طریق یکپارچگی خارجی نیز،بهبود می دهد. تفاصيل المقالة