ارائه مدل ریاضی دوهدفه جهت برنامه‌ریزی منابع در زنجیره تأمین پروژه با در نظر گرفتن کیفیت مواد اولیه و تخفیفات

نویسندگان

1 کارشناس ارشد مهندسی صنایع، دانشگاه علم و صنعت ایران

2 دانشیار دانشکده مهندسی صنایع، دانشگاه علم و صنعت ایران

چکیده

امروزه با توجه به رشد پروژه‌های بزرگ عمرانی و صنعتی و اهمیت تأمین به‌موقع مواد و ایجاد هماهنگی با تأمین‌کنندگان، موضوع زنجیره تأمین و لجستیک پروژه مورد توجه قرار گرفته است. یکی از راه‌های ایجاد این هماهنگی، برنامه‌ریزی موجودی یکپارچه است که به‌همین ‌منظور در این مقاله مدلی دو هدفه با در نظر گرفتن ویژگی‌های پروژه ارائه شد که هدف آن حداقل کردن هزینه‌‌های پروژه‌ می‌باشد. این مدل ترکیبی از مساله برنامه‌ریزی با منابع محدود1[1] و برنامه‌ریزی موجودی است. از این‌رو، در این تحقیق تلاش شده ضمن معرفی مدل برنامه‌ریزی موجودی در زنجیره تأمین پروژه، به بررسی کیفیت اقتصادی پروژه با توجه به استانداردهای نظام مهندسی نیز پرداخته شود و همچنین تأثیر تخفیف (افزایشی) بر روی هزینه‌های پروژه و نزدیک نمودن مدل به شرایط دنیای واقعی بررسی شود. برای حل مدل پیشنهادی، از روش محدودیت اپسیلون[2]استفاده شده و نتایج عددی به‌دست آمده از اجرای مدل به کمک این روش گزارش شده است.



 

کلیدواژه‌ها


عنوان مقاله [English]

A Bi-objective Mathematical Model for Resource Planning in the Project Supply Chain Considering the Quality and Discount of Raw Materials

نویسندگان [English]

  • Masoumeh Maleki 1
  • saeed yaghoubi 2
1 School of Industrial Engineering, Iran University of Science and Technology
2 Iran University of Science and Technology
چکیده [English]

Nowaday, rdue to the growth of large developmental and industrial projects and the importance of on time supply of materials and coordinating with suppliers, the issue of project supply chain has been considered. One of the ways to create this coordination is integrating inventory planning. For this purpose, in this paper, a bi-objective model is developed taking into account the features of the project, which aims to minimize the cost of the project. This model is a combination of resource constraint project scheduling and inventory planning. Therefore in this research, in addition to introducing inventory planning model for the project supply chain, the project's economic quality in accordance with the standards of the engineering system is considered, and also, the effect of discounts (incremental) on project costs to close the model to the real-world conditions is analyzed. To solve the proposed model, the ƹ-constraint method is used and the numerical results obtained from the implementation of the model are reported using this method

کلیدواژه‌ها [English]

  • Project Supply Chain / Inventory Panning / Bi
  • objective Mathematical Model / ƹ
  • Constraint method
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