基于Internet的多通道用户界面

提出了网络多通道界面模型、语音和指点相结合的基于上下文的查询、基于主通道的整合策略,并将受限的自然语言(汉语)理解技术应用于多通道交互中。文章给出了两个实例:汉语语音驱动的多通道文件管理器和网上购物多通道界面的ActiveX控件。结果表明,以上技术有助于提高人机交互的自然性和效率。     

新型耐腐蚀水环真空泵防腐防爆性能突出

由酚醛玻璃纤维增强塑料热压成型生产的耐腐蚀水环式真空泵是一种新型的耐腐蚀真空设备,它比普通水环式真空泵耐腐蚀效果理想,并且不易造成泵轴扭断,维修量小,节电效果显著,是一种值得广泛推广的真空设备。     

土工实验中的液、塑限测定浅议

文章分析了当前土工实验中的液、塑限测定过程中应当注意的问题及其存在的问题,并论述了如何对其实验数据进行处理和分析的方法。     

钢板桩围堰在水位变动区和软弱地基中的应用

利用钢板桩作围堰,在水位变动区和软弱地基条件下,采取一定刚度的围护设施来满足深基坑的施工需要;成功地运用了一种既施工简便、节约材料又确保安全的围护结构。根据软土的特点和钢板桩的柔性特征,通过采用模拟基坑开挖过程,按照板桩墙围护结构的设计计算方法进行围堰设计,并通过实际施工中一定的控制措施和对围堰内力、变形监测,确保相邻建筑物和自身结构施工的安全。根据实际运用的效果监测表明,采用的钢板桩围堰,是可行而又较优的一种方案。     

Using a customer-Level marketing strategy to enhance firm performance: A review of theoretical and empirical evidence

It is becoming increasingly apparent from the literature that marketers need to consider customer-level information when they generate a marketing strategy for the firm. In this article, the authors develop a customer-focused framework that uses a marketing strategy with an overall objective of maximized financial performance. This strategy is driven by seven customer-level marketing tactics and shows how actual customer data can be used to generate an actionable marketing strategy leading to optimal levels of profitability, customer equity, and shareholder value. In addition, the authors discuss a successful implementation of this strategy for several business-to-business and business-to-consumer firms and offer insights as to how to customize an implementation strategy for any firm, along with presenting potential challenges a firm may encounter during the implementation process. Several suggestions for future research are offered to explore and harness this newly available evidence. V. Kumar (VK) (vk@business.uconn.edu) is the ING Chair Professor of Marketing and the executive director of the ING Center for Financial Services at the University of Connecticut. He spends his time by transferring his knowledge (however little it may be) to his two daughters about customer lifetime value, diffusion models, forecasting sales and market share, retailing, and marketing strategy. J. Andrew Petersen (apetersen@business.uconn.edu) is a doctoral candidate in marketing at the University of Connecticut. His research interests include customer lifetime value, word-of-mouth effects, and customer-level marketing strategy. His research has been published inMarketing Research Magazine and theJournal of the Academy of Marketing Science.     

氢化物发生-原子荧光光谱法测定痕量硒

研究了氢化物发生-原子荧光光谱法测定土壤和水样品中的痕量硒,系统地考察了HCl浓度、KBH4浓度的影响;确定了最佳测定条件;共存元素的影响及干扰的消除,硒的回收率为95%～102%,硒的检出限为0.18ng/mL,RSD小于4%。本法用于测定标准土壤和水样品中的硒,结果与标准值吻合。     

市政工程项目管理中界面管理理论的应用研究

市政工程项目是城市基础设施建设中的关键内容,随着当下城市发展速度在不断加快,市政建设中对施工效率与质量的要求也越来越高,所以加强各施工环节、施工部门等有效信息与资料对接更显重要。界面管理理论应用到市政工程项目管理工作中,能够有效提高施工内与施工外各环节、各部门、各组织之间的矛盾解除以及沟通加深,有助于施工高效进行。     

Robustness to the unavailability of data in block designs

We present general results for finding or boundingt _maxB , the maximum number of arbitrary whole blocks of observations which can be removed from a block design, and still leave all of the elementary treatment contrasts estimable. The block sizes may be larger than the number of treatments. The results are applied to BBDs, reinforced BIBDs and BBDs, BTIBDs, and a series of variance balanced incomplete block designs with two block sizes. Also given for most of these designs, are results fort _max, the maximum number of arbitrary, scattered observations that can become unavailable, and still leave all of the elementary treatment contrasts estimable.The work was undertaken while Dr. Whittinghill was visiting Ohio State University, and supported by a grant from the Natural Sciences Division, Colby College, Waterville, Maine.     

山东省水土流失经济损失与生态价值损失评估

介绍了山东省水土流失现状，分析其危害，重点探讨了水土流失经济损失和生态价值损失的计算方法，建立经济损失计算模型，提出水土流失生态一经济面积边际比的概念，计算山东省县域边际损失比，并对其进行区域分布规律分析。     

SAP系统的EAI技术分析研究

文章系统地分析了EAI模型和SAP系统中自带的各种EAI接口以及它们的适用对象,并着重介绍了在SAP与其它系统之间如何建立连接和数据通信的原理和方法。