Concepts of Simultaneous Use in Mobile and Wireless Communications

Wireless communication research is evolving towards integration, inter-working and convergence of wireless systems, which will lead to several concepts of simultaneous use. In the present paper, a coherent set of 10 concepts of simultaneous use is identified, and structured into a space of simultaneous use, where services, systems and operators act as building components. A high level analysis is performed, where the pros and cons of the different concepts are identified. Illustrative examples are also provided for some concepts. Several parameters are listed for the evaluation and comparison of simultaneous use concepts (e.g., cost, throughput and complexity), depending on taking either a users or an operators perspective. One of the largest benefits of this systematic identification of simultaneous use concepts is the identification, from the perspective of users and operators, of essential R&D issues on inter-working and integration, which will lead to a promising pervasive wireless communications future.     

基于高斯积分的平面波谱法分析天线罩电性能

将平面波谱表面积分法与高斯积分相结合分析天线罩的电特性。在计算了口径天线的差波谱以求解带罩天线差方向图的基础上,将高斯积分应用到由罩外表面切向场求远场方向图中,提高了平面波谱法的计算精度。最后通过具体算例表明了本文方法的有效性。     

基于虚拟实现的矿井智能消防系统设计

考虑到矿井安全事故频发,煤矿企业提出可靠的装备、实用的技术和称职的人员等要求来保障生产安全.主要讨论采用系统集成和虚拟实现技术,设计具有智能虚拟交互控制和近似实战条件下的场景模拟培训功能的消防集成系统.该系统满足企业的实际需求,具有设计的必要性和应用的可行性,能有效地帮助企业提升安全水平.     

IT infrastructure Construction： Based on Competitive Advantage

Information technology （IT） infrastructure is the foundation of information sharing, storage, and processing upon which the entire business depends and it changes not only inner organizational structures but also outer competitive conditions. An IT infrastructure that possesses elements unique to a particular organization and difficult to duplicate can produce competitive advantage. To achieve this advantage, not only the inner integration of technology, personnel and business process in a firm is needed, but also a platform for electronic commerce is required. The purpose of this study is to establish the whole concept framework for IT infrastructure, based on competitive advantage, and to propose ideas about the construction of IT infrastructure system.     

PTN技术概览及作为综合业务传送网应用价值的探讨

简要介绍了PTN技术的技术特征和最新标准化进展,分析了其作为综合业务传送网的技术优势,并结合国内实际应用案例总结了网络演进策略。     

甘肃省网络整合后的技术探讨

省级广电网络的整合,标志着广电结束了各地分居的历史,开始由小网向大网的转变,给广电网络的发展带来了新的活力。从甘肃省有线网络整合后的角度出发,从前端、线路建设及终端接入方式等方面进行了探讨,提出了合理性建议。     

“互联网+”背景下我国冷链物流与互联网产业融合及实施路径研究

针对人们对冷链物流需求不断增强现状,为解决冷链物流存在的各项问题,要做好冷链物流与互联网产业融及实施路径研究,希望文中内容对于提高冷链物流市场化能够有所帮助。     

A complete resistance extraction methodology and circuit models for typical TSV structures

Through-silicon via (TSV) is one of the key technologies on three-dimensional integration packaging. In this article, an experimental methodology with circuit models was proposed for electrical characteristic tests on typical TSV structures. To this end, self-developed test patterns such as the via chains, the snake interconnections and the Kelvin structures with different dimensions were designed and manufactured. Suitable electrical measurement methodologies were next employed to characterise the element behaviours of the patterns. Based on the experimental data, electrical circuit models for the TSV structures were introduced and the parameters of the model were exacted. The validity and accuracy of the electrical model were finally verified and the TSV characteristic measurements can be performed through a simpler process.     

电子技术在绿色照明电路中的应用

近几年,随着科技的发展与进步,电子技术的发展逐渐的加快,各行各业对电子技术的应用也逐渐的趋于广泛。由于社会经济发展的加快,对能源的消耗逐渐的加剧,这也就促进了绿色照明技术的发展,其主要是对传统照明技术的创新,并在一定的程度上加剧了能源的节约。在绿色照明中加入信息技术也就是加速低碳社会的发展与进步。本文主要对电子技术在绿色照明电路中的应用进行分析,并对其发展的前景进行探索。     

基于校园门户平台图书馆管理系统的集成研究

图书馆管理系统的集成工作是当前数字化校园建设工作中的重点,基于门户平台的图书馆管理系统的集成包括统一身份认证集成、共享数据集成及信息门户集成。这里详细介绍此三大领域的集成目标与集成方式,并为校内远程数字资源访问功能的实现提供了切实可行的技术解决方案,使居住在校外的教职工通过统一身份认证方式成功访问校内远程数字资源,为其他院校从事该领域研究工作提供一定的借鉴。