مدل‌سازی دوهدفه مسئله مکان‌یابی تخصیص در یک زنجیره تأمین سبز با در‌نظر‌گرفتن سیستم حمل‌و‌نقل و انتشار گاز CO2

نویسندگان

1 دانشجوی دکتری، دانشگاه الزهرا.

2 دانشیار، دانشگاه الزهرا.

چکیده

در این پژوهش به مطالعه مسئله مکان­یابی تسهیلات در زنجیره تأمین سه‌سطحی، شامل کارخانه­ها، انبارها و خرده ­فروشان پرداخته شده است. انواع کالاها از طریق حالت­ های مختلف حمل ­و­نقل بین سطوح زنجیره منتقل می ­شوند. امروزه یکی از چالش ­های بسیار مهم در سازمان­ ها، کنترل انتشار گازهای گلخانه­ ای در سراسر شبکه است؛ بااین‌حال با توجه به پیچیدگی­ های مشکلات زنجیره تأمین سبز، ارائه مدل قابل­ حل دارای اهمیت زیادی است. در این پژوهش، به‌منظور ساده­ سازی مدل ریاضی، تنها CO2 منتشرشده در شبکه زنجیره تأمین در نظر گرفته شده است. هر تسهیل، مطابق با تقاضای ارسال­ شده، مقدار مشخصی از آلودگی را ایجاد می ­کند و آلودگی وسایل نقلیه به مسافت پیموده شده بستگی دارد. اهداف مدل پیشنهادی، کمینه ­کردن هزینه کل شبکه و کمینه­ کردن میزان انتشار گاز  CO2 است. روش حل پیشنهادی برای حل مدل ارائه‌شده، روش برنامه ­ریزی آرمانی چندگزینه ­ای است. به‌منظور بررسی کارایی روش­ پیشنهادی، یافته ­ها با نتایج به ­دست ­آمده از روش محدودیت اپسیلون مقایسه شده و تحلیل حساسیت پارامترهای ضروری صورت گرفته است.

کلیدواژه‌ها

عنوان مقاله [English]

Two-Objective Modeling of Location-Allocation Problem in a Green Supply Chain Considering Transportation System and CO2 Emission

نویسندگان [English]

  • Sindokht Mortazavi 1
  • Mehdi Seif Barghy 2
1 PhD Student, Alzahra University.
2 Associate Professor, Alzahra University.
چکیده [English]

In this paper, we study the facility location problem in three-echelon supply chain, including plants, warehouses and retailers. Different types of products are transported through different modes of transportation between facilities of the network. Today, one of the most important challenges in organizations is controlling greenhouse gas emissions across the grid; however, given the complexity of green supply chain problems, providing a solvable model is important. In this study, in order to simplify the mathematical model, only the CO2 released in the supply chain network is considered. Each facility, according to demand, creates a certain amount of pollution, and the pollution depends on the mileage. The proposed model aims to minimize the total network cost and CO2 emissions. The proposed solving method for solving the model is multi-choice goal programming method. In order to evaluate the efficiency of the proposed method, the results were compared with the results of the 14خµ"> -constraint method and sensitivity analysis of the necessary parameters was also performed.

کلیدواژه‌ها [English]

  • Green Supply Chain
  • Location-Allocation
  • CO2 Emission
  • -Constraint
  • Multi-Choice Goal Programming

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