基于报童模型的混合渠道供应链库存决策研究

针对混合渠道供应链,运用报童问题的分析框架,以需求转移为条件,研究了不同控制策略下制造商和零售商的库存决策问题,提出了以回购契约协调短生命周期产品混合渠道供应链。通过数值实验分析了需求转移对制造商和零售商最优库存量的影响,并与回购契约下及不存在需求转移情况下相应的最优库存决策量进行了对比。最后,根据数值实验的计算结果,提出管理启示。     

风险规避型供应商主导的双渠道定价与协调研究

针对供应商和零售商组成的供应链,研究单零售渠道下的定价以及供应链协调的批发价策略。进一步通过均值-方差分析,考虑供应商是风险规避者时,建立直销渠道的条件,直销渠道下的定价和协调供应链的批发价契约。结果表明,供应商在单渠道和双渠道情况下,需采用不同的批发价契约实现供应链的协调。数值仿真说明,风险规避的供应商只有在期望效用增加时才会选择建立直销渠道,否则即使期望收益增加也不能激励供应商建立双渠道。     

两类信息结构下决策权安排与组织效率

不同的信息结构对组织的效率会产生影响,信息共享的组织决策的效率要高于信息非共享的组织。在一个给定的信息结构下,决策权在委托人和代理人的不同安排,也会造成组织效率的不同。在组织决策系统内,在满足委托人或代理人的参与条件下,双方各自获得项目投资的相应的支付,在不满足委托人或代理人的参与条件下,双方获得纳什谈判结果。     

区域工业经济发展质量趋势的多目标模糊决策模型评价

本文运用多目标模糊决策模型对区域工业经济质量趋势进行评价,结合实例条析了这种方法客观性和直观性,并结合对该市经济指标的预测,进而预测其工业经济发展的科学性。     

基于提前支付强度过程的抵押贷款定价与均衡

基于提前支付强度过程考察了固定利率抵押贷款合同的定价和市场均衡问题.将均衡问题描述成代表性抵押人与市场之间的博弈.均衡由市场决定的内生抵押贷款利率和抵押人的最优再融资策略描述.在时齐Markov链利率及正线性比例再融资成本假设下,抵押人的规划问题可以简化成一个仅包含三个离散状态变量的Markov决策链,且一定存在唯一解.从而,均衡可由一个抵押利率决定函数和抵押人的最优再融资策略组成.一个简单的数值例子说明了计算均衡的迭代算法.结果表明,抵押人选择再融资往往是不明智的短视行为.     

关于电子政务信息的计量分析与网络环境下的政务决策

The activities of the government can be described as reporting the feelings of the people (receiving infor-mation), making policies (processing information) and issuing government orders (sending out information). This is a typical course of information processing. If we can successively trail and scientifically measure this information course, we will be able to appraise the performance of the government in a scientific way. The development of government informatiza-tion and e-government is providing such a kind of appraisement for the government. The paper mainly discusses the possi-bilities of informetric analysis of the e-government. Methods for such analysis are also described.     

元朝医学教育的兴办背景与主要特点

元朝的医学教育,是元朝整个教育体系中最具特色的部分之一.元朝政府在开展医学教育方面采取了诸多措施,确保了生源、提高了质量、促进了医药卫生事业的开展.但在后期,也出现了管理混乱、经费紧张等问题.对其进行分析梳理,可为今世提供参考和借鉴.     

一种智能协同的英语多媒体教学决策模型

提出了一种教师参与的智能协同的英语多媒体教学控制模型，解决了长期以来在CAI系统中无法使用主观题的弊端，并在教学内容库知识点和试题的设计上保证了这种智能协同决策方法实现的可能。     

Technical and tactical skills related to performance levels in tennis: A systematic review

The aim of this systematic review is to provide an overview of outcome measures and instruments identified in the literature for examining technical and tactical skills in tennis related to performance levels. Such instruments can be used to identify talent or the specific skill development training needs of particular players. Searches for this review were conducted using the PubMed, Web of Science, and PsycInfo databases. Out of 733 publications identified through these searches, 40 articles were considered relevant and included in this study. They were divided into three categories: (1) technical skills, (2) tactical skills and (3) integrated technical and tactical skills. There was strong evidence that technical skills (ball velocity and to a lesser extent ball accuracy) and tactical skills (decision making, anticipation, tactical knowledge and visual search strategies) differed among players according to their performance levels. However, integrated measurement of these skills is required, because winning a point largely hinges on a tactical decision to perform a particular stroke (i.e., technical execution). Therefore, future research should focus on examining the relationship between these skills and tennis performance and on the development of integrated methods for measuring these skills.