能防穿甲弹的新型挡风玻璃

美国空军正在测试一种强度足以抵抗穿甲弹的透明材料．这种材料是氮氧化铝，可替代目前在军用车辆上使用的沉重且不够坚固的防弹玻璃。     

内蒙古栎属的分类校正及其区系分析

《内蒙古植物志》中辽东栎的拉丁学名应为Quercus wutaishanica Mayr..内蒙古的2种栎属植物均属东亚植物区系成分，蒙古栎为东亚北部布种，五台栎为华北－东北南部分布种，二呈地理替代分布格局。     

国内

三因素使美元未来贬值 首先，美国经济仍在非常快地增长——实际增长率在4％左右。这意味着美国的进口增速仍将高于出口．也就是说．美国目前的经常账户赤字会继续以很快的速度增加．这将迫使美元贬值．其次，由于高估的住房价格、负债累累的居民以及上述不断恶化的经常账户赤字，美国经济绝无平衡可言．市场将再次拉低美元。     

出口企业如何应对RoHS指令

一、欧盟RoHS指令及其巨大影响欧盟RoHS指令是在世界环境与发展委员会“可持续发展”的定义背景下产生的。近几十年来全球电子电气工业一方面给人类社会带来了越来越多的方便和益处，另一方面也给人类社会带来了堆积如山的电子垃圾和严重的环境污染．给全球的生态环境造成了十分严重的影响,全球已经面临着严峻的“可持续发展”问题!有鉴于此。欧盟通过制定WEEE及RoHS环保两指令来控制欧盟生态环境的污染或破坏．同时客观上亦起到保护欧盟市场的贸易技术壁垒作用。     

Y2（Fe1—xGax）17化合物的Mossbauer效应研究

用穆斯堡尔效应研究了Ｙ２Ｆｅ１７化合筘，用Ｇａdisplay structuredisplay structure     

试论"两虫"的可替代检测

从生物学和物理学两方面对新颁布的《城市供水水质标准》中非常重要的微生物指标隐孢子虫和贾第鞭毛虫的可替代检测指标进行了论述和比较,指出虽然还不能找到明确的定论,但研究表明,颗粒计数法仍是目前比较合适的可替代的“两虫”检测方法。     

出口卖方信贷与福费庭相结合的融资策略探讨

出口卖方信贷与福费庭相结合的融资形式，可以避免其在单独运作中产生的某些不利因素，既有利于银行把握交易风险，也有利于出口商顺利完成交易。     

Technical Note ：SINGLE-PERIOD TWO-PRODUCT INVENTORY MODEL WITH SUBSTITUTION： SOLUTION AND PROPERTIES

In this paper, we study a single-period two-product inventory model with stochastic demands and downward substitution. The optimal order quantities are presented and some properties are provided. Comparing with newsboy model, we prove that both the profit and the fill rate can be improved by using the substitution policy. This work was supported partly by NSFC/RGC Joint Research Program under grant 79910161987 and the National Science Foundation of China (79825102, 70231010, 70321001). Lianqiao CAI is lecturer of School of International Business, Beijing Foreign Studies University. He received his B.S. and M.S. from School of Economics and Management, Tsinghua University, in 1995 and 1998, and Ph.D of Management Science from Tsinghua University in 2002. His research areas include supply chain management, optimization techniques. Jian Chen is Professor and Chairman of the Management Science Department and co-director of the Research Center for Contemporary Management, Tsinghua University. He has over 80 papers published in some leading international journals and first class Chinese journals, and has been a principal investigator for over 20 grants or research contracts with National Science Foundation of China, governmental organizations, and companies. His main research interests include supply chain management, E-commerce, modeling and control for complex systems, decision support systems and information systems, and forecast and optimization techniques. He serves as associate editor of the “IEEE Transactions on Systems, Man and Cybernetics: Part A” and “IEEE Transactions on Systems, Man and Cybernetics: Part C”, and on the Editorial Board of “The International Journal of Electronic Business” and “System Research and Behavioral Science”. He is the recipient of the Outstanding Contribution Award of IEEE Systems, Man, and Cybernetics Society in 1996, and the Young Scientist Award of China in 1992. He was Secretary General of the 1996 IEEE International Conference on Systems, Man, and Cybernetics in Beijing, Co-chair of the IPC of 1998 International Conference on Systems Science and Systems Engineering, Chair of the First Asian eBiz Workshop in 2001, Co-chair of the Asian eBiz Workshop in 2002 and 2003, and Co-chair of the international conference on Global Supply Chain Management in 2002. Houmin Yan received his B.S. and M.S. from the Department of Automation, Tsinghua University, in 1982 and 1985, respectively, and his Ph.D. from the Faculty of Management, University of Toronto in 1993. From Jan. 1994, he is with the Department of Systems Engineering and Engineering Management, the Chinese University of Hong Kong as an Assistance, Associate and Full Professor. He was a tenured Associate Professor at School of Management, the Univ. of Texas at Dallas. His main research areas are operations management, stochastic models, simulations, and supply chain management. He has published in journals such as Operations Research, Manufacturing and Service Operations Management, Production and Operations Management, Journal of Optimization: Theory and Applications, IIE Transactions and IEEE Transactions. He consults several high-tech companies, such as Motorola, C&K Systems, and Oriental Power, on issues spanning from production planning and scheduling, supply chain management to business process re-engineering. He is a member of INFORMS.     

厦门承接台湾软件业(IC设计)转移的可行性与对策研究

近年来．厦门软件业快速成长．2005年软件业总产值已突破45亿元．软件出口额达800多万美元。然而。与国内先进城市相比，厦门软件业发展并不乐观，仍处于弱势．2004年行业产值仅为全国的1．35％，出口额仅为0．14％，并且，在国家确定的11个软件产业基地和6个软件出口基地中没有厦门。这与厦门产业结构调整方向有矛盾，与拥有全国最大的软件园区不相称。如何借助软件园二期招商，引入关键企业。促进厦门软件业扩大规模、提升质量？