准备迎接WiMax

关于WiMax技术潜力报告差不多一年前就出现了，那时IEEE(美国电气及电子工程师学会)认证了802．16—2004标准，或称802．16d标准。然而持怀疑态度的人厌倦了各种各样的Wi—Fi标准，并怀疑WiMax太超前。但是标准和标准制定者是变幻不定的，因此持观望态度还是明智的。而且．管理网络集团和贝尔史登公司（Bear，Stearns)当时给这一概念泼过冷水，     

IEEE着手无线局域网标准项目

美国电气和电子工程师学会(IEEE)已经开始对有关无线局域网(WLAN)的标准IEEE802．11(TM)制定两项修正案。一项修正案是为了帮助IEEE802．11设备与外部网络间的交互工作，另一项将加强网络站的管理。     

浅析IEEE802．1x及其客户端软件

针对无线局域网有多种认证方法可以应用，IEEE802．1x标准就是其中的一种，它是一种基于端1：2的访问控制协议。包括三部分：客户端、访问点和认证服务器。本文侧重于客户端，对现有的IEEE802．1x的客户端软件进行了描述、比较和分析。     

以太网通信标准取得重大进展

更快速的以太网通信标准的开发日前取得重大进展，IEEE 802．3工作组批准将一项草案提交工作组投票表决。该项目预计将按计划在2010年6月获得IEEE标准局的批准。     

"飞翔的比特" --无线局域网标准与应用

随着信息技术的飞速发展，人们对网络通信的需求不断提高，希望不论在何时、何地，与何人都能够进行包括数据、话音、图像等任何内容的通信，并希望能实现主机在网络中漫游。无线局域网是实现移动计算机网络的关键技术之一，它是实现移动计算机网络中移动站的物理层与链路层功能，为移动计算机网络提供必要的物理接口的网络。IEEE802.11无线局域网是指采用无线传输媒体的计算机局域网，采用的标准是IEEE802.11。1990年IEEE802标准化委员会成立IEEE802.11无线局域网标准工作组。IEEE802.11无线局域网标准工作组任务为研究1Mb/s和2Mb…     

简单无线局域网的组建

无线局域网以其灵活便利的接入方式博得了众多用户的喜爱，广泛地应用于家庭娱乐和移动办公等环境。由于其技术标准众多，分别对应不同的应用环境，其中以IEEE802．11标准为主流。围绕此标准，详细论述了无线局域网的设计，设备的选购和网络的连接。     

世界标准观察

欧盟修改转基因生物评估标准；食品中的转基因成分的测试方法新标准颁布；IEEE开始制定电力企业计算机安全标准；新标准将向偏远地区提供宽带服务；IEEE 802．19（TM）顾问专家组将制定无线网络并存评估方法标准；MESA项目获得生产商大力支持。     

西门子发布新款无线通信产品

4月初．西门子发布了一款符合WLAN（无线局域网）IEEE 802．11n标准且兼容多行业的无线通信产品,该系列产品的数据传输速率可高达450Mbps。新系列产品包括接入点SCALANCE W786和W788,     

德州仪器联手Azcom Technology推出多核认知无线电解决方案

10月8日，德州仪器（TI）宣布在其TMS320C66xDSP基础上推fIJ综合系列认知无线电解决方案。同期，无线通信领域服务与解决方案供应商Azcom Technology也宣布，将基于TI无线基础架构SoC设计LTE及IEEE802．2标准电路板，     

DENSO-BHT-200Q工业无线采集终端

北京休恩科技最新代理产品DENSO-BHT-200Q是支持Windows CENET、QVGA彩色液晶显示的新概念产品。采用Intel Xscale PXA250 CPU技术，拥有触摸功能的彩色液晶显示屏，使得表现力更为丰富，操作更为简单。240X320(QVGA)点阵，约16万色。采用激光定位CCD识读方式，实现70cm(码宽为0．5mm)的远距离识读，更可识读残次的条码。符合IEEE802．11b世界标准规格及IP54防水防尘标准，最大通信速度为11Mbps。     

WiMAX技术及其市场应用刍论

文章阐述了WiMAX技术的优势和组网方式,通过案例分析了WiMAX技术提供的多种应用方案和演进路线,认为WiMAX与3G等现有及其演进技术是相辅相成的,提出了要解决WIMAX在推广应用过程中存在的技术问题,抓住技术转化的市场机遇。     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

Accountability of NGOs in Bangladesh A critical overview

NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.     

The Creation of the Office for National Statistics

A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.     

What helps? Women engineers' accounts of staying on

We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.     

论现代物流企业的发展观

物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。     

浅谈大体积混凝土裂缝的控制

大体积混凝土的裂缝问题是实际工程中长期困扰工程技术人员的问题,其控制技术的研究是混凝土结构研究的热点问题,具有重大的学术价值和潜伏的工程背景。