现代汽车电子控制技术

随着时代的进步和现代高科技技术在现代汽车上的应用,电子控制技术在汽车上的地位日益重要,本文主要从现代汽车电子控制技术的发展历史、应用现状和未来展望三个方面进行介绍和分析,为我们更好地使用和享受现代汽车拓宽了视野。     

无线宽带网络技术:WiMAX技术综述研究

随着全球通讯领域宽带业务的蓬勃发展,出现了具有4G象征的WiMAX宽带技术。介绍了WiMAx的概念、技术特点及支持的业务类型,并对其未来发展方向及应用进行了展望。     

嵌入式网络教学终端技术及其应用

嵌入式网络教学终端是利用嵌入式系统技术,根据教学实际需要研制的新一代网络教学产品,在网络教学、多媒体教学和远程教育中具有广阔的应用前景。文章在概述嵌入式系统结构和技术的基础上,对嵌入式网络教学终端的结构、性能和接口规范及其技术应用进行了详细的论述。     

Age of Uncontrolled Information Flow

We are heading into an era of uncontrolled and uncontrollable information flow. In the past, the tools of information flow required large investments, and the persons controlling them were easily identifiable. Now, effective long-range communication with large numbers of people can be done using tools that are easily affordable to the average citizen. Moreover, it can be done in ways that make monitoring and control virtually impossible. This is not a worrisome future change that can be averted by prompt action; it is a fait accompli and there is no reversing it. However, this is not necessarily clear to those interested in monitoring and control. Unfortunately, the bulk of electronic communication is still relatively exposed to monitoring and control, and is likely to remain so for a while. The danger is that the authorities, trying to retain a grip on a situation that is irretrievably slipping away, will react to the extremes of the problem in ways that leave ordinary users' privacy unprotected. The best approach is to adapt traditional solutions rather than inventing new ones. The safeguards built into the traditional solutions may not be precisely appropriate, but they are far better than nothing.     

网络多媒体教学的现状及发展趋势

多媒体技术和网络技术的高速发展,使得传统的教学观念、教学模式发生了很大变化,教育教学改革迎来了大好时机。本文首先简述网络和多媒体的基本概念,然后较详细地论述了多媒体技术在学校教学中的特点,最后根据当前多媒体教学现状,指出了网络与多媒体技术有效地结合在一起,是网络多媒体教学发展的必然趋势。     

矿井内人员定位考勤系统的设计

在矿井下发生安全事故后,及时准确地获知井下作业人员的位置信息是至关重要的。本文提出将ZigBee技术运用于煤矿井内定位系统中,组成无线传感器网络,构建井下人员无线定位系统的设计方案。     

New, technology-based firms in small open economies—An analysis based on the Finnish experience

This paper analyses the roles and impacts of new, technology-based firms (NTBFs) in a small open economy, with empirical data from Finland. It is suggested that in small open economies, NTBFs may fall into a resource trap, which might result in their being relatively less growth oriented than NTBFs in countries where the domestic market is larger. Consequently, in small open economies, the systemic impact of NTBFs could be emphasised rather than their organic growth in terms of the employment that they create.     

社会网络视角下的企业知识网络研究

知识经济时代,知识成为企业核心资源;知识的更新速度不断加快,而企业所拥有的知识存量有限,为保持竞争优势,知识网络已成为组织实现知识管理的有效实践工具和实践知识管理的主要平台。文章从社会网络视角入手,探讨了企业知识网络概念及内涵,分析了社会网络三大核心理论——强弱联结、社会资本、结构洞,论述了该理论对企业知识网络的影响,提出了构建企业知识网络交流平台的方法。     

无线网络中最大最小公平算法的改进

传统的有线网络中的最大最小公平标准不再适合无线多跳环境。本文采用基于最大团的最大最小公平算法,此种算法既适合无线多跳网络也适合有线网络。在一定条件下,此算法可以相当于比例公平算法。改进算法可以提高系统的吞吐量,使得网络效率较之改进前有所增大。     

无线传感器网络及其应用

介绍了无线传感器网络的系统结构、节点结构和特点,阐述了无线传感器网络的应用前景.