IJE TRANSACTIONS A: Basics Vol. 31, No. 7 (July 2018) 1057-1065    Article in Press

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F. Nikkhoo and A. Bozorgi-Amiri
( Received: December 15, 2017 – Accepted in Revised Form: February 15, 2018 )

Abstract    The coordination problem of relief items’ distribution operations is essential in humanitarian relief chains. If the coordination is proper, it will improve the response phase to the crisis. In order to improve the coordination in humanitarian relief chains, distribution and warehousing operations of relief items were outsourced to the third-party logistics. In this paper, the procurement-distribution coordination problem in a humanitarian relief chain was studied by the information-sharing mechanism. For this purpose, three decision-making modes, including decentralized, centralized, and coordinated, were formulated to minimize the total cost of the relief chain in the form of mathematical modeling under uncertainty. In a decentralized model, humanitarian relief chains are independent of one another and pursue their own goals. In a centralized model, a central agent manages all activities, and in a coordinated model, independent members are communicated using the information-sharing mechanism. To illustrate the validity of the proposed model, the problem was implemented in the form of a numerical example. The results showed that the chain cost is high in the decentralized mode, total chain costs were reduced in the coordinated mode, and relief items were sent to affected areas without any shortage.


Keywords    Coordination, Humanitarian Relief Chain, Information Sharing Mechanism, Possibilistic Chance-Constrained; Possibilistic Chance-constrained Programming


چکیده    مسأله هماهنگی عملیات توزیع کالا­های امدادی در زنجیره امداد بشر­دوستانه بسیار ضروری بوده و در صورت هماهنگی مناسب، سبب بهبود فاز پاسخ به بحران می­شود. در زنجیره امداد بشر­دوستانه، به­منظور بهبود هماهنگی، عملیات توزیع و انبارداری اقلام امدادی به لجستیک بخش سوم برون­سپاری می­شود و در چنین شرایطی لازم است میان بخش تأمین­کننده و 3PL ارتباط برقرار شود. در این مقاله، مسأله هماهنگی تأمین – توزیع در زنجیره امداد بشردوستانه به­وسیله مکانیسم اشتراک اطلاعات مورد مطالعه قرار گرفته است. بدین­منظور، سه حالت تصمیم­گیری؛ غیرمتمرکز، متمرکز و هماهنگ با هدف کمینه کردن هزینه­های کلی زنجیره امداد در قالب مدل­سازی ریاضی تحت عدم­قطعیت فرموله شده است. در مدل غیرمتمرکز، زنجیره امداد بشر­دوستانه شامل واحد های مستقل از یکدیگر است که هر یک به­دنبال اهداف خود هستند. در مدل متمرکز، یک واحد مرکزی تمامی فعالیت­ها را مدیریت می­کند و در حالت هماهنگ نیز، میان اعضای مستقل، با استفاده از مکانیسم اشتراک اطلاعات ارتباط برقرار شده است. برای نشان دادن کارایی مدل پیشنهادی، مسأله در قالب یک مثال عددی اجرا شده است. نتایج نشان می­دهد که در حالت غیرمتمرکز هزینه­های زنجیره بالا بوده و در حالت هماهنگ نیز هزینه­های کل زنجیره کاهش یافته و اقلام امدادی بدون هیچ­گونه کمبودی به نقاط آسیب­دیده ارسال شده است.


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