مدل ریاضی چند هدفه انتخاب تأمین‌کننده سبز (مورد مطالعه : زنجیره تأمین ایران خودرو)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد مدیریت صنعتی، دانشکده مدیریت و حسابداری، دانشگاه شهید بهشتی، تهران، ایران

2 استادیار، گروه مدیریت صنایع، دانشکده مدیریت و حسابداری، دانشگاه شهید بهشتی، تهران، ایران

3 استادیار، گروه مهندسی سیستم‌های اقتصادی-اجتماعی، دانشکده مهندسی صنایع و سیستم‌ها، دانشگاه تربیت مدرس، تهران، ایران

4 کارشناسی ارشد مدیریت اجرایی، دانشکده مدیریت، دانشگاه تهران، تهران، ایران

چکیده

در چند دهه گذشته، به علت بروز آثار مخرب زیست‌محیطی سازمان‌ها بر جوامع، فشارهای زیادی از جانب دولت‌ها و گروه‌های مردم‌نهاد بر سازمان‌ها برای رعایت جوانب زیست‌محیطی در فعالیت‌های آنان و به‌ویژه زنجیره‌های تأمین آنها وارد شده است. برای دستیابی به زنجیره‌تأمین محیط‌زیست دوست یا سبز، نقش تأمین‌کنندگان- به عنوان نقطه شروع زنجیره تأمین- بسیار مهم است. بنابراین برای ارزیابی و انتخاب تأمین‌کنندگان، علاوه بر معیارهای سنتی مانند قیمت، تحویل، کیفیت و... استفاده از شاخص‌هایی جدید که علاوه در برگیری مسائل زیست‌محیطی، متناسب با صنعت مورد نظر باشند، ضرورت دارد. در این پژوهش با در نظر گرفتن مجموعه‌ای از معیارهای اقتصادی و زیست‌محیطی، یک مدل برنامه‌ریزی ریاضی عدد صحیح چند هدفه برای مسئله انتخاب تأمین‌کننده سبز و تخصیص سفارش در شرایط چند محصولی، منبع‌یابی چندگانه و تک دوره‌ای ارائه می‌شود. مورد مطالعه این تحقیق بخشی از زنجیره تأمین ایران‌خودرو است که در آن فرایندهای انتخاب تأمین‌کننده و تخصیص سفارش مربوط به تعداد 31 قطعه از چهار نوع محصول نهایی که به‌وسیله 45 تأمین‌کننده عرضه می‌شوند، بررسی می‌شود. مدل ریاضی پیشنهادی برای زنجیره تأمین مورد مطالعه 507 محدودیت و 449 متغیر تصمیم دارد. مدل ریاضی پیشنهادی با استفاده از روش محدودیت اپسیلون حل شده و ارزش کل خرید سبز محاسبه می‌شود. نتایج حل و تحلیل حساسیت مدل پیشنهادی بر مورد مطالعه نشان می‌دهد که با افزایش اهمیت مسائل زیست‌محیطی در زنجیره تأمین مورد مطالعه، ارزش کل خرید سبز افزایش پیدا می‌کند.

کلیدواژه‌ها

عنوان مقاله [English]

Multi- Objective Mathematical Model for Green Supplier Selection (Case Study: Supply Chain of IRAN KHODRO Company)

نویسندگان [English]

  • Leila Babaee 1
  • Masood Rabieh 2
  • Ehsan Nikbakhsh 3
  • Mahdi Esmaeili 4
1 M.A, Industrial Management, Faculty of Management and Accounting, Shahid Beheshti University, Tehran, Iran
2 Assistant Professor, Department of Industrial Management, Faculty of Management and Accounting, Shahid Beheshti University, Tehran, Iran.
3 Assistant Professor, Department of Socio-Economic Systems Engineering, Faculty of Industrial and Systems Engineering, Tarbiat Modares University, Tehran, Iran.
4 M.A, Executive Master of Business Administration (EMBA), Faculty of Management, Tehran University, Tehran, Iran.
چکیده [English]

In the past few decades, due to negative environmental and social impacts of companies, there has been more pressure from the government and non-governmental organizations on companies to observe these issues in their operations, including their supply chain operations. To achieve an environment-friendly supply chain, the role of suppliers as the initial point of the supply chain is very crucial. So in addition to traditional criteria for evaluating and selecting suppliers such as price, delivery, and quality, it is essential to use new criteria, that while encompassing environmental issues, are fit to the characteristics of the industry under study. In this study, taking into account a set of economic and environmental criteria, a multi-objective integer mathematical programming model is proposed for solving the green supplier selection and order allocation problem under the multi-product, multi-sourcing, and single period assumptions. The case of this study is part of the IRAN KHODRO supply chain and focuses on the supplier selection and order allocation processes for 31 components of four types of the final products provided by 45 suppliers. The proposed mathematical model for the supply chain under study has 507 constraints and 449 decision variables. Then proposed model is solved via the ε–constraint method and Total Value of Green Purchasing (TVGP) is calculated. Results of the solution and sensitive analysis of the proposed model demonstrate that with increasing the importance of environmental issues in the supply chain, TVGP will increases.

کلیدواژه‌ها [English]

  • Green Supplier Selection
  • Order Allocation
  • Multi-Objective Integer Mathematical Model
  • ε–constraint Method

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