دانلود مقاله ISI انگلیسی شماره 19234
ترجمه فارسی عنوان مقاله

# انتخاب تامین کننده و مشکل خرید با هزینه ثابت و مقادیر سفارشی محدود تحت تقاضا تصادفی

عنوان انگلیسی
Supplier selection and purchase problem with fixed cost and constrained order quantities under stochastic demand
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
19234 2011 7 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : International Journal of Production Economics, Volume 129, Issue 1, January 2011, Pages 1–7

ترجمه کلمات کلیدی
زنجیره تامین - تامین تجهیزات - انتخاب تامین کننده - الگوریتم شاخه محدود
کلمات کلیدی انگلیسی
Supply chain, Procurement, Supplier selection, Branch-bound algorithm,
پیش نمایش مقاله

#### چکیده انگلیسی

This paper addresses a supplier selection and purchase problem under stochastic demand. In particular, a buyer firm (manufacturer or retailer) wants to procure a product from a group of potential suppliers, which may quote different prices and have restriction on minimum and maximum order sizes, to satisfy the uncertain demand. In addition to holding and shortage costs, a fixed cost is incurred for the buyer when a potential supplier is selected. The objective is to select suppliers and to allocate the ordering quantity properly among the selected suppliers to minimize the total cost, including selection, purchase, holding and shortage costs. The problem is modeled as a Mixed Integer Programming (MIP). Properties of the problem are explored and a branch-bound algorithm is proposed for it. Also, a simple algorithm for the subproblem is proposed based on its special structure. Numerical experiments are conducted to evaluate the performance of the algorithm and some managerial insights are obtained.

#### نتیجه گیری انگلیسی

In this paper, we study a supplier selection and purchase problem under stochastic demand, in which the available suppliers may quote different prices and may have restrictions on minimum and maximum order sizes. In addition to holding and shortage costs, a fixed cost is incurred for the buyer when a potential supplier is selected as a real one. We model this problem as an MIP and prove that the problem is NP-complete. We also characterize the optimal policy and propose a branch and bound method, which can obtain the exact optimal solution, for this problem and a simple algorithm for the subproblem based on its special structure. Numerical experiments are conducted to show that the performance of the algorithm is very impressive. Some interesting management insights are also obtained based on the numerical experiments. Related to this research, there are some topics that need to be studied further. Discounted price: in this paper, we only consider the case that the suppliers’ prices are constants. However, suppliers usually award price discount to the buyer based on the ordering quantity. Generalizing the results in this paper to include price discounts is an interesting research topic. Supply risk: in this paper, we assume that the buyer can get exactly the quantity he orders from the suppliers. As Yang et al. (2007) pointed out, supply risk prevails in reality because of various factors, especially for electronics products. Then generalizing the model in this paper to include supply risk is another interesting topic needs to be researched further. Multiple products: in this paper, we consider only single product. In reality, firms often sell multi-product. Generalizing our model to include multi-product, in which the capacity (or budget) is limited or the products are substituted, is also an interesting topic need to be studied further. Promotion: in this paper, we assume that the demand is exogenous. In reality, firms can always adopt some promotion methods (advertisement, leaflet, etc.) to manage the demand. Developing supplier selection and purchase model incorporating the effect of promotion is a topic, which needs to be studied further.