共查询到18条相似文献,搜索用时 561 毫秒
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已有的确定性两货栈(其中一个是自己货栈(OW);另一个是租用货栈(RW))库存模型通常不考虑增加量价格折扣,然而在实际生活中,增加量价格折扣却是促使库存管理者加大订货量的一个重要原因.本文通过考虑增加量价格折扣而将两货栈系统作了进一步扩展,在采用间隔式运输模式运送RW的物品到OW的情形下,建立了一个带有增加量价格折扣并允许短缺的两货栈库存模型,提供了一种寻求最优库存策略的简单方法. 相似文献
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假设供应商向零售商提供信用支付期的同时,零售商也向顾客提供信用支付期,研究了两货栈的变质物品库存模型,并讨论了模型最优解的唯一性,最后给出了最优订购策略的算法步骤与数值例子. 相似文献
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《数学的实践与认识》2015,(18)
基于二层信用策略的EPQ模型中,绝大多数的模型是考虑单物品的情形,由于需求的多样性,多物品库存模型越来越受库存管理者的关注.在二层信用条件下,假设零售商仅提供给它的顾客部分货款延期支付,建立了部分延期支付的多物品EPQ模型,并证明了模型存在唯一的最优解,最后给出数值例子验证模型的有效性. 相似文献
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周熙登 《数学的实践与认识》2018,(1)
传统的经济订货批量模型通常假设产品质量完好无损,但由于自然灾害、运输破损等不确定因素,因而实际情况非常少见,另外考虑了两层次延期支付,其中供货商提供给批发商延期支付期策略,同样批发商提供给零售商延期支付策略,建立了在商业信用条件下具有随机缺陷率产品的库存决策模型,然后得出批发商在不同情况下的最优订货周期、订购数量的简单判定方法.最后,通过算例说明了所得结论,并分析了参数变化对模型最优解的影响. 相似文献
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《数学的实践与认识》2015,(22)
研究一类货架和仓库商品共同影响需求的库存问题,采用二层延期支付策略,即供应商向零售商提供延期支付期,同时零售商也向顾客提供延期支付期;建立了相应的库存模型,得到零售商最优订购策略存在的条件及算法,最后给出数值例子和灵敏度分析. 相似文献
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在供应商给予零售商延期支付和现金折扣的优惠政策下,进一步假设产品的年需求量依赖于零售商产品售价的基础上,建立了由一个零售商和一个供应商所构成的库存决策模型,扩展了经典的经济生产批量(EPQ)模型。通过模型的分析求解,可以得出零售商在上述情况下的最优订货周期、最优售价及最优付款时间的简单判定方法。最后,通过算例,验证了模型的可行性,得出了与实际相符的结论。 相似文献
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In the business transactions, the supplier usually offers a permissible delay in payment to his retailer to attract more sales. In addition, a permissible delay in payment may be applied as an alternative to price discount. Based on the above phenomena, we incorporate a permissible delay in payment into the model of Yang [1] and develop a two-warehouse partial backlogging inventory model for deteriorating items with permissible delay in payment under inflation. The objective of this study is to derive the retailer’s optimal replenishment policy that maximizes the net present value of the profit per unit time. The necessary and sufficient conditions for an optimal solution are characterized. An algorithm is developed to find the optimal solution. Finally, numerical examples are provided to illustrate the proposed model. Sensitivity analysis is made and some managerial implications are presented. 相似文献
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In the classical inventory economic order quantity (or EOQ) model, it was assumed that the supplier is paid for the items immediately after the items are received. However, in practices, the supplier may simultaneously offer the customer: (1) a permissible delay in payments to attract new customers and increase sales, and (2) a cash discount to motivate faster payment and reduce credit expenses. In this paper, we provide the optimal policy for the customer to obtain its minimum cost when the supplier offers not only a permissible delay but also a cash discount. We first establish a proper model, and then characterize the optimal solution and provide an easy-to-use algorithm to find the optimal order quantity and replenishment time. Furthermore, we also compare the optimal order quantity under supplier credits to the classical economic order quantity. Finally, several numerical examples are given to illustrate the theoretical results. 相似文献
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Chih-Te Yang 《TOP》2010,18(2):429-443
This study investigates a deteriorating inventory problem in which the supplier simultaneously offers the retailer either
a conditionally permissible delay in payments or a cash discount. In the case of a conditionally permissible delay, if the
retailer orders more than a predetermined quantity, then he/she has a grace period to make the full payment. Otherwise, he/she
must pay the payment for goods of certain proportion first while receiving the goods and has a grace period to pay off the
rest. As to a cash discount, if the retailer pays for the entire amount of the order within a certain short period, then he/she
will receive a cash discount from the supplier. In additions, from a financial standpoint, all cash outflows related to the
inventory control that occur at different points of time have different values. Hence, it is necessary to take account of
the factor of time value of monetary when drafting the replenishment policy. In a word, this paper uses an alternate approach-discount
cash flow (DCF) analysis to establish an inventory problem for deteriorating items in which the supplier provides the retailer
either a conditionally permissible delay or a cash discount. We then study the necessary and sufficient conditions for finding
the optimal solution. Furthermore, we establish several theoretical results to obtain the solution that provides the smallest
present value of all future cash flows. Finally, several numerical examples are given to illustrate the results and obtain
some managerial insights. 相似文献
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Puspita Mahata 《Mathematical and Computer Modelling of Dynamical Systems: Methods, Tools and Applications in Engineering and Related Sciences》2020,26(4):374-408
ABSTRACT This paper considers an imperfect manufacturing system with credit policies in fuzzy random environments. The supplier simultaneously offers the retailer either a permissible delay in payments or a cash discount and retailer in turn provides its customer a permissible delay period. We used an alternate approach – discount cash flow analysis to establish an inventory problem. It is assumed that the elapsed time until the machine shifts from ‘in-control’ state to ‘out-of-control’ state is characterized as a fuzzy random variable. As a function of this parameter, the profit function is also a random fuzzy variable. Based on the credibility measure of fuzzy event, the model with fuzzy random elapsed time can be transformed into a crisp model . We establish several theoretical results to obtain the solution that provides the largest present value of all future cash flows. Finally, numerical example is given to illustrate the results and obtain some managerial insights. 相似文献
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Within the economic order quantity (EOQ) framework, the main purpose of this paper is to investigate the retailer’s optimal replenishment policy under permissible delay in payments. All previously published articles dealing with optimal order quantity with permissible delay in payments assumed that the supplier only offers the retailer fully permissible delay in payments if the retailer ordered a sufficient quantity. Otherwise, permissible delay in payments would not be permitted. However, in this paper, we want to extend this extreme case by assuming that the supplier would offer the retailer partially permissible delay in payments when the order quantity is smaller than a predetermined quantity. Under this condition, we model the retailer’s inventory system as a cost minimization problem to determine the retailer’s optimal inventory cycle time and optimal order quantity. Three theorems are established to describe the optimal replenishment policy for the retailer. Some previously published results of other researchers can be deduced as special cases. Finally, numerical examples are given to illustrate all these theorems and to draw managerial insights. 相似文献
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Chao-Kuei Huang Deng-Maw Tsai Ji-Cheng Wu Kun-Jen Chung 《European Journal of Operational Research》2010
Trade credit plays an important role in financing for many businesses and industries. For the buyers, purchased inventory can be considered to be financed in whole or in part with permissible delay in payments during the purchasing process. On the other hand, both the vendor and buyer take part in order-processing cost reduction by applying information technologies, such as EDI (electronic data interchange). The order-processing cost can also be reduced by adding certain capital investments, and this will affect the lot size decisions. This article develops an integrated inventory model to determine the optimal inventory policy under conditions of order-processing cost reduction and permissible delay in payments, and shows that the total annual variable cost function possesses some kinds of convexities. A solution procedure is provided to determine the optimal order policy. Finally, a numerical example is presented to illustrate the solution procedure. 相似文献
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It is common business practice to purchase inventory on an open account. Purchased inventory can be considered to be financed in whole or in part with permissible delay in payments. This paper develops a model to determine an optimal ordering policy under conditions of allowable shortage and permissible delay in payment and shows that the total annual variable cost function possesses some kinds of convexities. With those convexities, a theorem is presented to determine the optimal order quantity. Numerical examples are given to illustrate the theorem. 相似文献