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51.
Lot‐sizing policies for deterioration items under two‐level trade credit with partial trade credit to credit‐risk retailer and limited storage capacity
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Jui‐Jung Liao Kuo‐Nan Huang Kun‐Jen Chung Pin‐Shou Ting Shy‐Der Lin H. M. Srivastava 《Mathematical Methods in the Applied Sciences》2017,40(6):2122-2139
The main purpose of this article is to investigate the optimal wholesaler's replenishment decisions for deterioration items under two levels of the trade credit policy and two storage facilities in order to reflect the supply chain management situation within the economic order quantity framework. In this study, each of the following assumptions have been made: (1) The own warehouse with limited capacity always is not sufficient to store the order quantity, so that a rented warehouse is needed to store the excess units over the capacity of the own warehouse; (2) The wholesaler always obtains the partial trade credit, which is independent of the order quantity offered by the supplier, but the wholesaler offers the full trade credit to the retailer; (3) The wholesaler must take a loan to pay his or her supplier the partial payment immediately when the order is received and then pay off the loan with the entire revenue. Under these three conditions, the wholesaler can obtain the least costs. Furthermore, this study models the wholesaler's optimal replenishment decisions under the aforementioned conditions in the supply chain management. Two theorems are developed to efficiently determine the optimal replenishment decisions for the wholesaler. Finally, numerical examples are given to illustrate the theorems that are proven in this study, and the sensitivity analysis with respect to the major parameters in this study is performed. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
52.
突发事件会增加供应链成本,如何进行成本分担是决定供应链能否协调应对突发事件的重要因素.用参数分别描述市场需求剧增时增加的生产成本和市场需求剧减时发生的多余产品处理成本,在数量折扣契约基础上,研究突发事件发生后制造商的最优批发价格和零售商的最优订货量,分析其影响因素比较突发事件发生前后包括市场剧增与市场剧减两种情况下的差异,并给出了数值算例.结果表明,成本分担系数和市场需求分布及其变化都会影响最优批发价格和最优订货量,只要根据市场需求变化相应调整契约参数并合理分担由突发事件增加的成本,通过数量折扣契约供应链就能够协调应对突发事件. 相似文献
53.
本文从热传导离散物理模型上论证了集中质量热容矩阵模型可以在离散点上满足热量守恒定律,采用它就可以避免许多热传导时间积分中的不合理现象。几个算例表明了该模型具有良好的精度。 相似文献
54.
Shib Sankar Sana 《Applied mathematics and computation》2011,218(7):3277-3288
The paper deals with an inventory model to determine the retailer’s optimal order quantity for similar products. It is assumed that the amount of display space is limited and the demand of the products depends on the display stock level where more stock of one product makes a negative impression of the another product. Besides it, the demand rate is also dependent on selling price and salesmen’s initiatives. Also, the replenishment rate depends on the level of stock of the items. The objective of the model is to maximize the profit function, including the effect of inflation and time value of money by Pontryagin’s Maximal Principles. The stability analysis of the concerned dynamical system has been done analytically. 相似文献
55.
The EOQ model will have a century of its discovery in two years, and recently still, many researchers have been using alternative approaches to model and solve inventory systems. The EOQ/EPQ models have been developed using different optimization methods. However, in many of the works that deal with the EOQ/EPQ with backorders only linear backorders cost is considered. This paper proposes another easy method which uses basic concepts of analytic geometric and algebra. The proposed method finds the optimal lot size and backorders level considering both linear and fixed backorders costs. Additionally, this paper presents a review of the different optimization methods utilized in inventory theory. 相似文献
56.
Shanshan Wang Luming Zhang Ran Fan 《Journal of Computational and Applied Mathematics》2011,235(8):1993-2005
In this paper, discrete-time orthogonal spline collocation schemes are proposed for the nonlinear Schrödinger equation with wave operator. These schemes are constructed by using orthogonal spline collocation approaches combined with finite difference methods. The conservative property, the convergence, and the stability of these methods are theoretically analyzed and also verified by extensive numerical experiments. In addition, some interesting phenomena which require further theoretical analysis are discussed numerically. 相似文献
57.
58.
本文从汇票承诺费率的角度探索银行承兑汇票承诺费的减免对银行利润的影响。通过建立零售商、制造商和银行的利润模型并依次分析零售商订货量、制造商对融资模式的选择和银行汇票承诺费率,结果发现,保兑仓模式下订货量低于赊销模式,但制造商提前贴现汇票能冲抵订货量的劣势,对银行而言,将汇票承诺费率降低至临界值以下才能使保兑仓模式优于赊销而成为制造商的选择,最优汇票承诺费率是银行利润函数求解基础上考虑赊销与保兑仓模式竞争关系的结果。银行为执行“减税降费”政策而减免汇票承诺费有利于增加保兑仓业务量,同时也有利于提高供应链效率。 相似文献
59.
本文给出三体在—般情形下的伴随李群系与守恒量,并在特殊的力势函数下求出了三体扩展的伴随李群系,进一步利用这个扩展的伴随李群系求出除10个经典守恒外的更多守恒量. 相似文献
60.
研究利用Lie对称的生成元τ(t,q,q·)和ξs(t,q,q·)来构造广义H ojman守恒 量,并讨论三种特殊情况,研究表明:Hojman守恒量是该广义守恒量的特例,且在Lie对称 的生成元的形式为τ(t,q)和ξs(t,q)时,该广义Hojman守恒量可以导出Lu tzky守恒 量,此外,还给出一个排除平凡守恒量的条件.最后,给出两个简单例子,作为所获得结果 的说明.
关键词:
动力学系统
广义Hojman定理
Lie对称
守恒量 相似文献