Making company information accessible: how to develop an onlineinformation system

A method for developing an online information system that provides employees with access to company information is presented. The method integrates knowledge from many areas of expertise: systems analysis (software development), instructional design, human factors, information science, visual design, user interface design, and technical communication. A case example illustrating the operation of a developed information system is presented     

无需使用焊料、引线和高温处理的端接工艺

元件制造商Methode Electronics(位于美国伊利诺斯州芝加哥)公司开发的业界首创的Sonicrimp技术实现了密封和防潮的电气连接—即便在不同材料之间也不例外—而无需使用焊料、引线或高温工艺。这种采用声焊技术的工艺有望消除焊接不透、冷钎焊接缝,并避免医疗、电器或汽车应用中的热敏感元件受损。被回避的问题还包括在使用标准的拨动式(poke-through)和ZIF连接器的电路中采用银聚合物厚膜时所常见的银迁移现象。该工艺采用了一种聚合物技术前沿顶盖与衬垫(cap-and-cradle)系统,在此系统中,高压被施加在接线上并由声能来完成端接。加至每…     

中国铁通:立足铁路专网,开展特色业务

中国铁通集团有限公司的前身是铁道通信信息有限责任公司,成立于2000年12月26日,共有省级分公司31个,系国有大型基础电信运营企业。2004年1月20日,经国务院批准,由铁道部移交国资委管理,更名为“中国铁通集团有限公司”(以下简称“中国铁通”)。2004年6月,中国铁通被国资委列为董事会试点企业。     

电力企业如何运用科技信息加强员工培训工作

就目前社会发展趋势来看,企业与企业之间的竞争已经从产品技术发展成为人才之间的竞争。在知识经济时代下,电力企业要想能够在激烈的市场竞争中获得生存的空间,那就一定要能够拥有一支素质过硬,能力较强人才队伍,所以,对于电力企业来说,一定要能够加强对于员工的培训工作,尤其是要能够利用现代化科学信息技术,打造一支现代化企业团队。目前,电力企业员工培训方面还存在着许多的问题,本文主要是在阐述电力企业员工培训重要性的基础之上,根据目前培训所存在的一些问题来提出一些相应的对策和建议,力求能够改善电力企业员工培训的现状,提高员工的素质,为企业的健康持续发展奠定良好的基础。     

A constitutive model for a high lead solder

High lead solders have been widely used in chip scale packaging. This paper presents a comprehensive study of the various properties, such as Young's moduli, creep, plasticity, cyclic hardening and softening, fatigue, of a typical high lead solder, 96.5Pb-3.5Sn. Based on these studies, a unified creep and plasticity approach, incorporating damage, is adopted to construct a three-dimensional constitutive model for this solder. The model is then used to simulate cyclic hardening and softening behavior, isothermal and nonisothermal loading, and damage during the fatigue process. Experimental results from uniaxial tension tests are used to verify the model and good agreement has been achieved     

The impersonal company: a paradox

While technology is great and offers many remarkable ways to streamline a business, one must not let it overtake the human factor. Productivity takes many forms not the least of which is company-consumer interface. Factors like caring and concern about employees; employee morale which is so vital to productivity and responds to the communication the company sends in so many subtle and not so subtle ways; coming down on the human side of the equation rather than the technology side. First impressions are lasting ones and the role of receptionists and telephone operators are very important as their impression can determine business transactions of a company's culture     

立足本地实情 做好特色文章——对新余市电信市场二次开发的思考

结合本地电信市场的实际情况以及新余市电信分公司的一些具体措施，对如何进行新余电信市场的二次开发作了探讨。     

加大力度自主研发我国高等级安全操作系统

引 言操作系统的安全性在计算机系统的整体安全性中具有至关重要的作用,没有操作系统提供的安全性,计算机系统的安全性是没有基础的。AT&T实验室的S.Bellovin博士曾经对美国CERT(Computer EmergencyResponse Term)提供的安全报告进行过分析,结果表明,很多安全问题都源于操作系统的安全脆弱性。     

Linux下Oracle应用技术及实现

OCI是一个功能十分强大的数据库操作模块,Libsqlora8 for *nix是GNU/Linux组织针对OCI的易用性开发的C语言封装,文章详细阐述了如何在Linux平台上利用Libsqlora8函数库开发Oracle数据库的过程.     

Forecasting the future of information technology: how to make research investment more cost-effective?

This article presents the results of a forecasting project funded by the European Community on the evolution of the technologies and its impact on society in the coming decade. The project requires the development of a methodology to assess the potential impact of technology evolution and provides a tool for decision makers to prioritize the allocation of research investments. A brief outline of some of the technology trajectories identified and possible technology disruptions are given.     

Removing shortcomings of linear molecules to develop high efficiencies deep-blue organic electroluminescent materials

By using molecular twisting and bulky side group substitution, we successfully develop two deep-blue emitters, BiPI-1 and BiPI-2. These two twisted linear molecules retain the excellent photophysical and electrical properties of planar analogue and remarkably supress redshifts in solid state emission. Especially, BiPI-1 showed deep-blue emission in both solution and solid phase, and high carrier mobilities with μ_h > 10⁻³ cm² V⁻¹ s⁻¹ and μ_e > 10⁻⁵ cm² V⁻¹ s⁻¹. Standard blue electroluminescence (color purity: (0.15, 0.08)) and high device efficiency (CE: 4.62 cd A⁻¹, EQE: 6.18%) were observed in a non-doped OLED of BiPI-1.     

Designing a very high output resistance current source for medical applications

A new technique is proposed for the design of a current source, in bipolar technology, with a very high output resistance and low output capacitance. Such a technique is useful in electrical impedance tomography applications. The DC relationships of the basic topology are established. Then, based on the analysis of a simplified equivalent circuit, an expression is formulated for the output resistance and tested against simulation results for both ideal and practical biasing circuits. The effect of circuit capacitances, and in particular, the role of the collector-base capacitance of the output transistor, in determining the output impedance as a function of frequency is considered. Finally, a new circuit is shown to have an incremental output resistance exceeding 200?GΩ.     

Delphi通过ADO技术访问数据库方法研究

Delphi是一种功能强大的编程语言,可以编写任何类型的程序。在众多的软件中,在数据库方面,Delphi表现出色,可以开发多种数据库结构的客户服务器模式数据库应用程序。文中研究了数据库程序开发中的最基本的一步,即如何用ADO连接数据库的方法。通过实例演示,展示了这种方法的细节,具有可操作性和可重复性,可供其他程序员借鉴,提高开发效率。     

MIMO技术变革下一代移动通信系统设计

随着无线通信技术的快速发展，频谱资源的严重不足已经日益成为遏制无线通信事业的瓶颈。如何充分开发利用有限的频谱资源，提高频谱利用率，是当前通信界研究的热点课题之一。     

International high technology cooperation: lessons learned

In February 1986, in response to the Nunn Amendment in the United States, a special Conference of National Armaments Directors (CNAD) examined possible ways to foster cooperative high technology research and development programs within the NATO Alliance. As a result, they established the Special Working Group on Ada Programming Support Environments (SWG APSE) to oversee the development of a multinational software development environment for developing real-time weapon systems in the Ada programming language. The Working Group also developed a requirements specification for a software development environment interface standard. The author describes the benefits and pitfalls of this joint software development. He also describes the lessons learned from such joint multinational development efforts. Further, the author describes the management issues that are unique to such an international collaborative effort and gives a frank assessment of the techniques that had helped and hindered the program's progress     

“无铅化”多层板间的结合力如何提高和改善的有益探索和建议

用核磁共振分析法对电子玻纤布化学后处理用硅烷（含和不含氟碳表面活性剂）水溶液,其化学组成随pH值变化规律中推理描绘出低浓度下硅烷水溶液,其化学组成随PH值变化之规律。由于AF168S（含氟碳表面活性剂）就可以在pH≈5.6条件下获得稳定、高效、可靠应用,并经有益实践探索见证了推理正确,为多层板间的结合力提高和改善找到了一种途径。由此笔者建议可以再引入氟碳偶联剂,为多层板间的结合力再提高进行积极探索。     

2kJ高能量钕玻璃激光器的热管理技术分析

为了进一步提高激光器输出功率,针对脉冲串工作的2kJ高能量钕玻璃固体激光器,采用有限差分法,对比研究了传统恒温水冷方式和采用传统水冷与加热控制相结合的新型热管理技术下的激光棒温度分布情况.结果表明,采用新型热管理技术可以降低激光棒内的温度梯度,确保高能量激光输出.