GPS/GIS车辆监控管理系统中的关键技术

简要论述了车辆监控管理系统的工作原理及通信链路的选择策略，针对一套实用的GPS／GIS车辆监控系统设计方案，详细阐述了系统设计中的关键技术．     

跨国公司技术转移研究评述

跨国公司是影响世界经济发展和技术进步的重要力量。本文通过对1960年代以来国内外学术界有关跨国公司技术转移影响东道国或地区经济增长和技术进步的理论和实证研究成果进行细致的分析和梳理发现:整体上看,跨国公司的直接投资对东道国或地区经济增长和技术进步的影响是不确定的。在很多情况下,跨国公司的技术控制会造成东道国或地区企业长期的技术依赖。更重要的是,学术界一直缺乏基于提高东道国或地区技术创新能力视角的研究,更缺乏精确度量技术转移程度的指标体系,而这正是我们全面、客观、科学评价跨国公司技术转移和技术扩散的出发点。     

趋势与前景:新世纪师范教育发展探寻

新世纪的中国师范教育将在以下方面出现新发展、新变化 :减少办学层次、开放培养体系、完善课程结构、促进一体化教育、提高专业化水平、掌握信息技术、加强高师教师队伍建设     

Have a Legal Question Without the Resources to Get an Answer?

This article explores the Western New York's Library Resources Council's Ask the Lawyer Program. The program provides a timely model for local cultural heritage communities, such as archives, to collectively retain a lawyer in a non-representational capacity to answer both specific and hypothetical questions that arise as a result of their work.     

建立学习型政府的障碍及对策

建立学习型政府,实质上就是要在政府机构中引入学习型组织的管理模式和理念,进行以愿景为基础的学习管理,以提高政府组织的适应性。然而,建设学习型政府不可避免地会遇到许多现实障碍。而且,在政府组织中,由于其自身的特殊性,还存在着不同于企业组织的特属于政府组织的学习障碍。为此必须采取相应的对策。     

A dynamic decision model for portfolio investment and assets management

This paper addresses a dynamic portfolio investment problem. It discusses how we can dynamically choose candidate assets, achieve the possible maximum revenue and reduce the risk to the minimum level. The paper generalizes Markowitz's portfolio selection theory and Sharpe's rule for investment decision. An analytical solution is presented to show how an institutional or individual investor can combine Markowitz's portfolio selection theory, generalized Sharpe's rule and Value-at-Risk(VaR) to find candidate assets and optimal level of position sizes for investment (dis-investment). The result shows that the generalized Markowitz's portfolio selection theory and generalized Sharpe's rule improve decision making for investment.     

线切割电参数的合理选择

分析了线切割参数对线切割加工工艺指标的影响,指明了怎样合理选择切割线参数。     

当代西方社会学信任研究的新趋势

20世纪70年代以来,当代西方社会学在继承古典与现代社会学信任研究的积极成果的基础上,将信任作为自己的一个专门研究课题,并在短短的20多年的时间里取得了丰硕的研究成果。这些研究成果呈现出当代西方社会学信任研究的三大新趋势,即信任研究的理论自觉性日益增强、范围日益集中以及主题日益具体而系统。这三大新趋势预示了信任社会学作为社会学的一门新的分支学科在当代西方即将形成。研究与分析当代西方社会学信任研究的新趋势,不仅将推进社会学信任理论的研究与建构,而且也将为构建作为我国社会主义市场经济强大内在支撑的社会信任提供直接的借鉴与启示。     

提高培训目标层次建构现代培训模式--论现代中小学教师培训的目标、课程与组织

现代中小学教师培训应以强化持续发展能力为重点，与此相适应，就必须建立“四结合”的课程模式和多种形式优化组合的组织模式。     

EBF网络特征映射和恢复及其在鲁棒话者识别中的应用

The performance of speaker verification systems is often compromised under real-world environments. For example, variations in handset characteristics could cause severe performance degradation. This paper presents a novel method to overcome this problem by using a non-linear handset mapper. Under this method, a mapper is constructed by training an elliptical basis function network using distorted speech features as inputs and the corresponding clean features as the desired outputs. During feature recuperation, clean features are recovered by feeding the distorted features to the feature mapper. The recovered features are then presented to a speaker model as if they were derived from clean speech. Experimental evaluations based on 258 speakers of the TIMIT and NTIMIT corpuses suggest that the feature mappers improve the verification performance remarkably.