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Modeling and Solving a Multi-product Economic Order Quantity Problem with Imperfect Items and Emergency Buy or Repair Options | ||
| Advances in Industrial Engineering | ||
| مقاله 4، دوره 51، شماره 4، فروردین 2018، صفحه 405-416 اصل مقاله (906.05 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jieng.2017.221136.1261 | ||
| نویسندگان | ||
| Khashayar Amirhosseini؛ Mohammad Mohammadi* ؛ Seyed Hamidreza Pasandideh | ||
| Department of Industrial Engineering, Kharazmi University, Tehran, Iran | ||
| چکیده | ||
| In this paper, it has been proposed a multi-product economic order quantity (EOQ) model, assuming the presence of some imperfect items. They are inspected 100 percent as they are delivered, and defective items are withdrawn. We do not access to supplier to replace the imperfect items with perfect one. So for meeting the demand, there are two options for imperfect items: buy or repair. In buy option, we sell the imperfect items in second market with lower price, and then buy the imperfect items from local supplier with higher price; but in repair option, we will send the imperfect items to repairing workshop, and after they are delivered from repair facility, they are sold as perfect items. There are also some limitations in available budget and warehouse space, and thus we should determine the economic order quantity for each item by considering these limitations. Additional in repairing option, we have some constraints for repairing rate. In the proposed model, the shortage is not allowed, and we have considered this issue in employing alternatives. This paper extends the supposed assumes by Jaber et al. (سال؟؟؟). The Proposed problem is a Mixed Integer Non-Linear problem (MINLP). This field of problems are NP-Hard, and they are solved by Meta heuristic algorithms, but they can be solved by exact methods in small scale. So, the proposed problem in this paper is solved by exact method. We also solved numerical examples, and applied the sensitivity analysis for important parameters. | ||
| کلیدواژه‌ها | ||
| Economic order quantity؛ Emergency buy؛ Exact method؛ Repair | ||
| عنوان مقاله [English] | ||
| مدل‌سازی و حل یک مسئلۀ موجودی چند محصولی با درنظرگرفتن وجود اقلام معیوب در محموله‌های سفارشی و گزینه‌های خرید یا تعمیر | ||
| نویسندگان [English] | ||
| خشایار امیرحسینی؛ محمد محمدی؛ سیدحمیدرضا پسندیده | ||
| دانشجوی کارشناسی ارشد گروه مهندسی صنایع دانشکدة فنی، مهندسی دانشگاه خوارزمی تهران | ||
| چکیده [English] | ||
| در این پژوهش، یک مسئلة موجودی چند محصولی با فرض وجود اقلام معیوب ارائه شده است که دو رویکرد خرید یا تعمیر برای مواجهه با اقلام معیوب و تأمین تقاضا وجود دارد. در مدل‌سازی این مسئله از پژوهش جابر و همکاران ایده گرفته شده است. مدل ریاضی پیشنهادی، هزینة موجودی برای هر نوع محصول را در حالت خرید یا تعمیر اقلام معیوب محاسبه می‌کند و با توجه به هزینه‌های موجودی و شرایط عملیاتی، درمورد خرید یا تعمیر اقلام معیوب تصمیم‌گیری می‌کند. برای توسعة بیشتر و همچنین نزدیک‌کردن مدل مسئله به شرایط واقعی، محدودیت‌هایی مانند محدودیت بودجة در دسترس و ظرفیت انبار به مدل مسئله اضافه شده است. برای حل این مسئله از روش دقیق استفاده شده است و مثال‌های عددی برای آن حل شده است. همچنین، برای درک اهمیت برخی از پارامترهای مسئله، تحلیل حساسیت انجام گرفته است. | ||
| کلیدواژه‌ها [English] | ||
| اقلام معیوب, تعمیر, خرید, روش‌های دقیق, مدل مقدار سفارش اقتصادی | ||
| مراجع | ||
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