IJE TRANSACTIONS B: Applications Vol. 27, No. 8 (August 2014) 1233-1242   

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A. Hafezalkotob, M. S. Babaei, A. Rasulibaghban and M. Noori-daryan
( Received: June 02, 2013 – Accepted: December 12, 2013 )

Abstract    We consider competition between two decentralized supply chains network under demand uncertainty. Each chain consists of one risk-averse manufacturer and a group of risk-averse retailers. These two chains present substitutable products to the geographical dispensed markets. The markets’ demands are contingent upon prices, service levels, and advertising efforts of two supply chains. We formulate the distribution design problem of two rival chains as a two-person nonzero sum game. Since strategic decisions of distribution designs often have priority over tactical ones, we first calculate the equilibrium of tactical decisions for each pair of distribution design scenarios. Then, according to the presented methodology, we find Nash equilibrium solutions of distribution network scenarios for two rival chains. Eventually, the research has concluded with a numerical example in order to illustrate the real applications of the methodology.


Keywords    Supply chain network, Distribution network design, Tactical and strategic decisions, Nash equilibrium, Non-zero sum game


چکیده    در اين تحقيق ما رقابت بين دو شبکه زنجيره تأمين غيرمتمرکز را تحت شرايط عدم قطعيت تقاضا در نظر گرفته‌ايم. هر يک از اين زنجيره‌ها از يک توليدکننده ريسک‌گريز و همچنين مجموعه‌اي از خرده‌فروشان ريسک‌گريز تشکيل شده است. اين دو زنجيره، کالاهاي قابل جايگزين را به بازارهايي ارائه مي‌کنند که در جغرافياي مشخصي استقرار يافته‌اند. تقاضاي بازارها به قيمت‌، سطح خدمت و ميزان تبليغات دو زنجيره وابسته است. ما مسأله طراحي شبکه توزيع دو زنجيره تأمين را در قالب يک بازي غيرمجموع صفر دو نفره مدلسازي کرده‌ايم. از آنجا که تصميمات استراتژيک طراحي شبکه توزيع نسبت به تصميمات تاکتيکي اغلب داراي اولويت است، ما تعادل تصميمات تاکتيکي را به ازاي هر جفت سناريو‌های توزيع محاسبه مي‌نماييم. آنگاه مطابق با متدولوژي ارائه شده، جواب تعادل نش را براي سناريو‌هاي شبکه توزيع دو زنجيره جستجو مي‌نماييم. در پايان، اين تحقيق با ارائه يک مثال عددي جهت تشريح کاربرد‌هاي عملي اين متدولوژي خاتمه مي‌يابد.


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