基于复杂供应链库存管理策略的系统动力学研究

在分析了具有不同提前期和加工时间的复杂供应链特点基础上，研究了混合CONWIP／Kanban库存管理思想与同步CONWIP库存管理思想在复杂供应链上的应用。同时借助Vensim建模平台。针对这两种管理思想建立了基于复杂供应链系统的动态仿真模型，并对模拟结果进行了分析。     

随机型连续盘点订货模型中供应链周期服务水平的波动和优化

对存在数量折扣和运费折扣的随机型连续盘点库存策略,进行了建模和分析,设计了供需双方合作的库存策略和订货策略,给出了理想的经济订货量和订货价格的甄选方法流程,模型确定了供应链理想的周期服务水平,证明了在该策略下,理想周期服务水平对于订货批量具有相对稳定性,并分析了此稳定性对供应链整体的重要意义,以及模型近似的合理性。在这个服务水平上,确定了再订货点和安全库存,并分析了该策略对供应链各方在管理措施方面的启示。利用该模型进行库存和订货决策,设计供应链合同,可以在不伤害服务水平的基础上,降低供应链总成本。     

基于提前期和价格折扣的延迟交货和库存策略研究

研究了基于提前期和价格折扣的延迟交货和库存策略,其中的价格折扣是基于提前期的价格折扣,即当出现缺货而不能在既定的提前期内交货时,企业就会提供一个价格折扣,这时会有一部分顾客愿意等待,直到订单被满足,即延迟交货。其中,愿意等待延迟交货的比例跟提前期成反比关系,提前期的各部分都可以通过增加成本来实现压缩。     

CHC水泥集团库存优化管理解决方案

库存管理作为生产管理的重要内容,是企业降低成本,增强市场竞争优势,提高经济效益的重要手段。论文在对CHC（嘉新京阳）水泥集团库存控制现状进行分析的基础上,揭示了该集团库存管理所存在的问题,提出了CHC水泥集团库存控制策略和控制模型;同时,为保证库存控制策略的实施,结合实际情况,对CHC水泥集团库存业务流程和组织进行了调整,并将信息管理系统升级到ERP系统以配合库存管理新策略实施。     

供应链环境下库存管理绩效评价研究

针对目前供应链库存管理绩效评价不足的现状,根据供应链库存管理的特点与特殊性,提出了供应链库存管理绩效评价原则,建立了相应的绩效评价指标体系,运用AHP法确定各项指标相应权重,建立了供应链环境下的库存控制绩效模糊综合评判模型,并进行了算例应用。     

改进我国个人工资薪金所得税的思考

个人工资薪金所得税是我国个人所得税的主体。我国现行个人工资薪金所得税的税制设计,在一定程度上制约着其功能的发挥。建议在完善我国个人工资薪金所得税功能定位的基础上,结合我国城乡居民的实际收入状况,对个人工资薪金所得税做进一步改进。     

将数学建模引入高等数学教学中的典型案例

首先阐述了将数学建模思想融入高等数学教学内容中的意义,接着从高等数学中的基本概念和基本定理出发,通过具体案例说明如何将数学建模案例融入在高等数学教学中。最后给出了根据高等数学内容选编的典型建模案例。     

The impact of vertical integration on inventory turnover and operating performance

This paper investigates how vertical integration may influence inventory turnover and firm operating performance. A causal model is developed to investigate the effects of vertical integration on three types of inventory, namely raw materials inventory (RMI), work in progress inventory (WIPI) and finished goods inventory (FGI). The model tests the interactions between inventory types and the consequences of inventory turnover performance on various aspects of firm performance including costs and profitability. In particular, path analysis supports systematic differences with respect to how vertical integration affects RMI, WIPI and FGI. Vertical integration has a positive effect on RMI and FGI turnover but no significant effect on WIPI turnover. FGI contributes to a reduction in supporting processes costs which causes an improvement in return on sales (ROSs). Vertical integration impacts ROS directly.     

Capital Controls,Global Liquidity Traps,and the International Policy Trilemma*

The zero bound on interest rates introduces a new dimension to the trilemma in international policy. The openness of the international financial market might render monetary policy ineffective, even within a system of fully flexible exchange rates, because shocks that lead to a liquidity trap in one country are propagated through financial markets to other countries. However, the effectiveness of monetary policy can be restored by the imposition of capital controls. We derive the optimal response of monetary policy to a global liquidity trap in the presence of capital controls. We show that, even though capital controls might facilitate effective monetary policy, capital controls are not generally desirable in terms of welfare.     

Design and planning for green global supply chains under periodic review replenishment policies

We quantify the impact of jointly optimizing strategic network design and tactical inventory planning on the cost and CO₂ emissions of multi-echelon logistics networks. The obtained insights indicate that longer optimized replenishment cycles reduce a node’s transportation cost and CO₂ emissions but increase its inventory costs. Moreover, under a fixed replenishment cycle, a node’s service level increases when supplied by a satellite warehouse. Finally: (i) the costs of implementing optimal green network design decisions could be misleading if inventory planning is neglected, (ii) greening of supply chains could become expensive, (iii) current legislative CO₂ ton prices hardly influence logistics networks.