创中国特色无线城市

目前全球已经建成或正在建设的无线城市超过600个,到2010年,全球无线城市预计将达1500个.2008年以来,随着国家新一代移动宽带通信重大科技专项的实施,国内各级政府高度重视并开始推进无线城市建设,但适合中国城市采用的无线城市建设与发展模式充满挑战.     

宽带卫星技术探究

本文首先介绍了宽带技术发展,深入地分析了无线宽带接入技术中的关键技术——宽带卫星通信技术,重点分析了宽带卫星通信的原理.展望了将来宽带技术研究方向与发展趋势.     

浅谈宽带无线接入技术

通常接入网传输系统按传输媒质分为有线接入和无线接入。无线接入技术有多种分类方式,按传输速率分,有窄带、中宽带和宽带。文章详细介绍了宽带无线接入技术。     

WLAN网络AP数据回传与广电网络融合技术研究

WLAN是运营商无线宽带网络的重要组成部分,是无线蜂窝网络承载移动数据业务的重要补充,是支撑无线宽带接入的有效手段,在运营商的发展战略中具有重要地位。当前WLAN建设面临着传输进场困难、现网施工困难的挑战,制约了WLAN的网络规模发展。本文提出的技术方案是基于广电网络回传WLAN AP数据至移动网内,替代当前一般建设方案中的自建传输回传,从而解决了传输难以进场、因业主装修无法走线两类影响WLAN建设的突出问题,从而实现了WLAN网络的快速建设。     

基于导频的OFDM信道估计方法

随着现代科技不断发展以及社会的进步，越来越多的研究人员开始更多地关注无线宽带数字通信系统的发展。制约这个系统的传输性能和信息速率的主要因素之一，则是无线信道时延扩展引起的符号间干扰。因此，消除符号间干扰，以及由无线信道时延扩展引起的频率选择性衰减，成为无线宽带通信系统中必须要解决的问题，在研究过程中正交频分复用（Orthogonal Frequency Division Multiplexing OFDM）技术显现出了其明显的优势。因此OFDM成为下一代宽带移动通信系统的候选方案。     

宽带数字集群在城市轨道交通中的应用探讨

针对城市轨道交通数字集群的现状与问题,从应用需求和技术发展两方面探讨宽带数字集群在城市轨道交通的应用,提出了城市轨道交通无线集群宽带化演进的可行性,并对下一步发展方向提出建议。     

厄瓜多尔东部油田无线宽带组网可行性分析

本文介绍厄瓜多尔东部油田的地理和通信概况、当今无线宽带组网的主流技术,最后结合厄瓜多尔的实际情况,对在分公司部门和机组之间进行无线宽带组网的各种方案进行了可行性分析。     

WLAN无线城域网组网可行性初探

随着电信业重组的深化,宽带接入业务的竞争将更加激烈。3G技术本身和网络现状还不足以完全支撑未来用户对移动互联网业务日益增长的带宽需要,发展WLAN业务,对于电信运营商发展宽带战略,在全业务运营环境下树立宽带竞争优势,实现固网和移动业务融合具有重要意义。WLAN天生具备的高带宽、IP化和移动性特点正好全面满足移动互联网的需求,3G与WLAN需统一规划、相互补充、同步建设,2009年各大电信运营商纷纷将3G＋WLAN的组合作为无线宽带的发展战略。     

无线宽带技术的未来

从分析现实电信市场竞争和接入网现状入手 ,论述未来无线宽带接入技术的特点、优势和业务功能 ,描述了未来接入技术的发展趋势是无线宽带。     

无线网络时代城市管理的系统结构与特征

从无线网络技术对城市管理的影响角度研究无线城市的规划及建设问题。首先,系统梳理了国内外相关研究文献,并对全球范围内无线城市建设实践进行了概括总结。其次,基于系统科学的逻辑思路,从城市管理主体、城市管理对象、城市管理介质,以及城市管理环境四个方面探讨了无线网络时代城市管理的系统结构,重点分析了作为介质的无线网络技术对城市管理主体和客体的影响。最后,通过与传统城市管理、电子政务和数字城市时代城市管理的对比,分析并总结了基于无线网络技术的城市管理特征。     

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。     

Supply Chain Strategies in the UK Fashion Industry—The Rhetoric of Partnership and Realities of Power

This paper focuses on the fashion industry, one characterised by issues such as dramatic shifts in the scale and power of major retail buyers in the market, the advent of retailer own brands, and the nature of sourcing and supply chain decisions, issues that are increasingly global in nature. The aim of this research is to explore the nature of relationships between UK high street multiple fashion retailers and their contracted suppliers, many of whom are entrepreneurial firms by most definitions of the term. Four core themes emerge from the literature and provide a framework for the research, namely, power, process, partnership, and people. The research approach was qualitative, and conducted over a period of twelve months. The paper ends with an agenda for future research.