مسئله طراحی شبکه امداد: رویکرد بهینه‌سازی استوار توزیعی

نوع مقاله : مقاله پژوهشی

نویسنده

دانشیار، دانشگاه صنعتی شاهرود.

چکیده

در این پژوهش یک مدل برنامه‌ریزی استوار دومرحله‌ای ریسک‌گریز برای طراحی شبکه امداد چندمحصولی ارائه شده است. مجموعه تصمیمات مکان‌یابی تسهیلات خدمت‌­دهنده و مدیریت موجودی اقلام امدادی به‌صورت یکپارچه اتخاذ شده است. ظرفیت تسهیلات خدمت­دهنده، تقاضای دریافت اقلام امدادی و ظرفیت مسیرهای ارتباطی تحت تأثیر بروز اختلال همراه با عدم‌­قطعیت خواهد بود. میانگین وزنی زیان مورد­انتظار در توسعه مدل برنامه‌ریزی استوار لحاظ شده است. کارایی مدل پیشنهادی با بررسی مسائل عددی متعدد ارزیابی شده است. نتایج کلیدی مطالعه حاکی از کارایی مدل استوار توزیعی ریسک‌گریز نسبت به مدل تصادفی دومرحله‌ای مرسوم است؛ همچنین نوع مجموعه مبهم و سطوح پارامترهای سطح اطمینان، ریسک‌گریزی و تنظیم‌کننده بر عملکرد شبکه امداد تأثیرگذار خواهد بود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Relief Network Design Problem: A Distributionally Robust Optimization Approach

نویسنده [English]

  • Aliakbar Hasani
Associate Professor, Shahrood University of Technology.
چکیده [English]

In this study, a robust two-stage risk-aversion optimization model is proposed for the multi-product relief network design problem. The comprehensive set of decisions for locating and reinforcing relief facilities, inventory planning, and distributing healthcare items has been considered in an integrated manner. Uncertainties of relief facility capacity, relief demand, and the node linkage capacity are considered. Moreover, the weighted average expected loss is considered in the proposed robust planning model. The efficiency of the proposed model has been evaluated by examining numerical instances. The obtained results indicate the efficiency of the distributionally robust model compared to the traditional two-stage stochastic model. In addition, the type of ambiguous set and levels of confidence, risk aversion, and adjustment parameters will affect network performance.

کلیدواژه‌ها [English]

  • Disaster Management
  • Relief Network Design
  • Uncertainty
  • Robust Distributed Optimization
  • Risk Aversion
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  • تاریخ دریافت: 19 اسفند 1399
  • تاریخ بازنگری: 09 مرداد 1400
  • تاریخ پذیرش: 22 مرداد 1400
  • تاریخ اولین انتشار: 25 مرداد 1400
  • تاریخ انتشار: 01 دی 1400