Flexible Workflow Management in Agile Supply Chain System

With the vehement development of global competition , Agile Supply Chain (ASC) becomes an effective approach that supports dynamic ent erprise alliance and realizes agile manufacturing, as for the enterprises to cap ture market opportunities rapidly and strengthen their anti-risk ability. As Ag ile Supply Chain System (ASCS) is dynamic and distributed, the realization of it ‘s processes needs to be much flexible. Often in Agile Supply Chain System (ASCS ), there are many dynamic tasks, many changes of the ...     

A threshold stochastic volatility model

This article introduces a new model to capture simultaneously the mean and variance asymmetries in time series. Threshold non‐linearity is incorporated into the mean and variance specifications of a stochastic volatility model. Bayesian methods are adopted for parameter estimation. Forecasts of volatility and Value‐at‐Risk can also be obtained by sampling from suitable predictive distributions. Simulations demonstrate that the apparent variance asymmetry documented in the literature can be due to the neglect of mean asymmetry. Strong evidence of the mean and variance asymmetries was detected in US and Hong Kong data. Asymmetry in the variance persistence was also discovered in the Hong Kong stock market. Copyright © 2002 John Wiley & Sons, Ltd.     

超对策理论的改进及应用

超对策技术主要处理军事或经济贸易冲突中出现的信息失真, 态势误判情形下双方的决策分析选择, 这也是一种定量研究欺骗与反欺骗战术的方法。决策目标(目的)与决策分析选择实施过程有机结合是赵对策技术的一个尚不完善之处。本文提出“制约垒”概念来反映基于决策目标之下决策分析、选择、控制的动态过程, 最后以“海湾危机”全过程为实际背景, 用改进的超对策方法进行了分析。     

链斗式提升机U形螺栓的受力分析

建立了U形螺栓的力学模型 ,推导出了载荷、应力的分布情况以及计算公式。     

COMPARATIVE ANALYSIS ON TRADITIONAL PROCUREMENT AND E-PROCUREMENT STRATEGY OF SUPPLY CHAIN

1 Introduction For most of the industrial enterprises, the procurement of materials, components and parts is the first step of manufacturing Therefore, procurement management is very important for reducing total cost of supply chain, improving products quality, and shortening operation cycle Procurement management has been the most valuable part in supply chain management It is forecasted that the typical decision-makingissues of supply chain in future will focus on the field of procurement ma…     

基于Markov链的两心理账户BPT研究

针对投资者的有限理性特征，利用Markov链构造了投资者两心理账户之间的动态转换模型。描述了随机数量转换对投资者证券投资决策的影响机理，数据模拟与实证分析表明：基于Markov链的两心理账户BPT(行为证券组合理论)模型能够有效反应决策者的实际情景。     

提前期牛鞭效应的产生与基于TOC的生产计划控制

分析敏捷供应链下存货型生产类型生产计划和控制的特点和要求，从新的角度——“通过时间综合症”的存在分析了生产提前期牛鞭效应产生的原因及对敏捷供应链生产计划和控制的影响，阐述了常规控制牛鞭效应措施的局限，探讨了在敏捷供应链条件下，基于约束理论（TOC）的存货生产牛鞭效应的控制方法。     

STUDIES ON HORIZONTAL COMPETITION AMONG HOMOGENOUS RETAILERS THROUGH AGENT-BASED SIMULATION

1. Introduction A supply chain is a network composed osuppliers, manufacturers, retailers, etc., whichcooperate to offer a kind of goods or servicesThese supply chain members cooperate andcompete with each other to maximize theiown profits. For example,…     

供应链中二级分销网络优化设计的随机规划模型

给出供应链中二级分销网络优化设计的机会约束规划模型。模型中将各个分销中心的需求量和各工厂的生产能力设为随机参数，并进一步讨论如何将模型中的机会约束转化为确定性等价类问题。     

一种简单供应链中信息共享的价值

通过模型分析的方法，研究一种简单供应链即一个供应商和n个零售商的两级供应链之间的需求信息共享所产生的价值。研究结果表明：信息共享可以减少供应商的存储水平，降低供应商的期望费用。