绿色供应商选择研究

绿色供应商的选择应符合循环经济和绿色供应链的发展要求,运用直觉模糊多属性决策的方法,选择绿色供应链管理中绿色供应商可以使评选出的结果更加符合实际。     

双差数列的几个性质

讨论了双差数列与周期双差数列的通项公式以及求和公式。     

基于B2C的中国互联网用户团购行为的实证研究

基于互联网的团购成为了中国电子商务新的增长点。传统的团购研究多关注成交机制的差异,而新的互联网团购限定了成交价格、谈判区间和边际效应,形成了具有广告效益、利润收益和客户信任为一体的中介平台。通过搜集20家中国主要的团购网站在一年中的销售数据,研究发现品牌因素、折扣大小、累积效应都对参与团购人数产生显著影响。     

Entry and the Number of Firms in the Swedish Pharmaceuticals Market

This paper analyses the factors that determineentry into the Swedish pharmaceuticals market. The analysis is based onpanel data for 22 different substances covering the years 1972 to 1996. Theresults show that profit opportunities in a particular market have apositive impact on entry. In addition, there is some evidence suggestingthat the length of the patent protection period has a negative impact onentry.     

区间时变时滞线性系统稳定性准则的改进

研究了区间时变时滞线性系统的稳定性问题,基于Lyapunov泛函方法,使用新的处理技术估计Lyapunov泛函导数的上界,以线性矩阵不等式形式给出了系统稳定性准则的改进结果。所给稳定性准则比已有结果具有更低的保守性,数值实例表明了结果的有效性。     

运用列克西斯图分布编制生命表-双死亡数线性方法

利用按年龄和死亡时间收集的死亡数据 ,本研究提供了一种新的生命表计算方法。该方法的优点是利用了原有的死亡分布模式     

兼容网卡配置服务器对网卡的作用

针对建立 Windows NT无盘工作站中存在的一些问题 ,重点介绍了利用兼容网卡配置服务器对网卡的支持 ,并以实例说明其应用。     

Efficiency Considerations in the Additive Hazards Model with Current Status Data

For current status data, L IN , O AKES and Y ing (1998) proposed a procedure for estimation of the regression parameters in the additive hazards model that makes clever use of martingale theory. However, one of the outstanding problems posed in the paper was the issue of efficient estimation, as their estimators do not attain the semiparametric information bound. In this paper, we explore this issue and provide a characterization of the NPMLE. We conduct efficiency comparisons between the NPMLE and the procedure of L IN et al . (1998) analytically and numerically through analysis of a dataset from a tumorigenicity experiment.     

基于单元星形光纤网的最大总光程及其求解方法

研究了单元星形光纤网中,最多光路数目与最大允许光链路损耗间的关系,推出了在给定最大允许光链路损耗、不同光路数目时各路总光程的求解方法,进而得到最佳光路数目与最大总光程,最终得出六条结论。     

Grey Critical Chain project scheduling technique and its application

Based on the idea of Grey System and interval number coefficient notation, a Grey Critical Chain scheduling approach is studied. According to Grey system Theory, the time of project or task completion can be considered as the object that extension is definite but intension is uncertain, which is coincident with the character of the project management. The Grey Critical Chain Scheduling Technique mainly aims at the single project time management, but the management idea can also be applied to the other knowledge areas of the project management. In this technique, we improve the selection method of the buffer time in the Critical Chain, in order to obtain reasonable Feeding Buffer time and Project Buffer time. In this paper, we will use an example to discuss the Grey Critical Chain Scheduling Technique, compare Grey Critical Chain with Program Evaluation and Review Technique, Critical Chain and Fuzzy Critical Chain, and analyze the advantages, disadvantages and applicable scope of their own.