我国农村药品监督体系构建:监督网模式研究——基于全国868县级样本和3省案例调查的实证分析

回顾建国以来我国农村药品监督体系的建设过程,并利用2007年全国868份县级样本数据和山东、贵州、湖北三省案例访谈调查资料,对目前监督网建设的进展程度和主要模式进行归纳与分析.     

发展绿色经济 应对绿色壁垒

适应于日益强劲的绿色化浪潮 ,绿色壁垒的产生有它客观必然性 ;而绿色壁垒是根据WTO以及国际协议的相关规定而制定的 ,因此是合理合法的 ,它成了国际贸易中的真正的壁垒 ;应对绿色壁垒的根本措施是发展绿色经济     

ROBUSTNESS OF VARIOUS PRODUCTION CONTROL POLICIES IN SEMICONDUCTOR MANUFACTURING

This paper compares several different production control policies in terms of their robustness to random disturbances such as machine failures, demand fluctuations, and system parameter changes. Simulation models based on VLSI wafer fabrication facilities are utilized to test the performance of the policies. Three different criteria, namely, the average total WIP, the average backlog, and a cost function combining these measures, are used to evaluate performance. Among the policies tested, the Two‐Boundary Control policy outperforms the others.