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。     

论数字集群移动通信网络体制分析

集群通信从最初的模拟发展到数字,数字集群行业正在朝着国产化的方向发展,这已经成为了数字集群行业探讨的热点问题,市场对无线集群通信的需求在不断增加。数字集群通信系统是以移动通信为主的通信系统,可以提供多种服务,本文主要对集群通信网络的概念和数字集群移动通信网络的运行进行了深入的讨论和研究,并为今后数字集群通信技术的发展方向提出了宝贵意见。     

浅谈数字集群专业技术

数字集群替代模拟集群是通信发展的必要趋势。本文从数字集群的概念、网络架构、接口描述、调度子系统的接口协议等等方面介绍了数字集群技术；采用前向业务共享技术及快速连接技术，解决了“一呼百应”和快速接入等技术难题，实现了数字集群模拟化及调度指挥数字化，从而推动数字集群的发展。     

浅谈数字集群专业技术

数字集群替代模拟集群是通信发展的必要趋势。本文从数字集群的概念、网络架构、接口描述、调度子系统的接口协议等等方面介绍了数字集群技术；采用前向业务共享技术及快速连接技术，解决了“一呼百应”和快速接入等技术难题，实现了数字集群模拟化及调度指挥数字化，从而推动数字集群的发展。     

对现代无线通信技术若干理论问题的研究

近几年来,全球通信技术的发展日新月异,尤其是近两三年来,无线通信技术的发展速度与应用领域已经超过了固定通信技术,呈现出如火如荼的发展态势。其中最具代表性的有蜂窝移动通信、宽带无线接入,也包括集群通信、卫星通信,以及手机视频业务与技术。结合这样一种趋势,在这里针对现代无线通信技术若干理论进行简要的阐述,以供同业借鉴。     

基于LTE技术的电力通信应用研究

随着智能电网的应用普及,LTE宽带无线技术以其卓越的优势成为国际电力界公认的电力无线通信技术发展趋势,本文通过阐述目前我国电力通信系统的现状,分析了LTE技术在电力通信中的应用。     

应急无线通信体系架构浅析

应急通信为各类紧急情况提供及时有效的通信保障。总结了应急通信的特点,分析了卫星通信、短波电台、集群系统等通信体制的技术优势和不足,针对应急通信及时、便捷、高效的实际需求,提出了突发紧急状态下应急无线通信的分层体系架构,能够有效利用现有无线通信技术建立适应大、中、小地域紧急情况下的应急指挥通信保障平台。     

中小企业集群网络融资新模式设计北大核心

本文基于现代网络通信技术的快速发展,提出一种新的中小企业集群网络融资模式,即"4A+1C"模式。该模式将网络技术有效融合到企业集群、政府、金融机构、民间群体中,通过强力的信息流,各个主体围绕信息网络中心平台形成反馈回路,不仅可以有效解决由于信息不对称引发的融资风险问题,而且有助于实现中小企业集群融资优势从理论研究转变为现实应用。     

中小企业集群网络融资新模式设计

本文基于现代网络通信技术的快速发展,提出一种新的中小企业集群网络融资模式,即"4A+1C"模式。该模式将网络技术有效融合到企业集群、政府、金融机构、民间群体中,通过强力的信息流,各个主体围绕信息网络中心平台形成反馈回路,不仅可以有效解决由于信息不对称引发的融资风险问题,而且有助于实现中小企业集群融资优势从理论研究转变为现实应用。     

天津市滨海新区警用350兆TETRA数字集群系统的研究与应用

天津市滨海新区公安局研究采用先进的TETRA数字集群技术,建成一套覆盖新区全境的350兆TETRA数字集群系统,满足语音通信调度、数据业务传输、地理信息系统应用、接处警系统应用、移动警务信息查询应用等公安业务需求。     

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.     

Ansätze und Ergebnisse anglo-amerikanischer M&A-Forschung

Based on a review of established U.S. management journals (1995–2003), six schools of thought are identified within the Anglo-American M&;A research: “Capital Market”, “Principal/Agent”, “Industrial Organization”, “Organizational Behavior”, “Human Resources” and “Strategic Management”. The literature review shows that the definition of M&;A success, the methods applied, and insights from empirical research differ according to the respective school of thought. Empirical studies focus on the resource combinations of merger partners, the specific circumstances of merger negotiations, and on integration management as antecedents of merger performance. Unfortunately, empirical findings have not yet provided reliable explanations for M&;A success. Based on the current state of Anglo-American M&;A research, the authors discuss implications for business practice, identify research gaps, and propose areas for future research.     

Introduction of New Technology with a Sound Transition of the Input-Output Structure

We examine the general equilibrium repercussions associated with the introduction of new technologies, using the generalized Leontief system that allows technological substitutions. We show that an untested introduction of cost-increasing technologies in any industry may result in creating a non-productive technological structure that does not satisfy the Hawkins-Simon condition, following the autonomous dynamic adjustment process with structural transitions in the economic system. Therefore, we propose a practicable control scheme of introducing cost-increasing technologies that strictly avoids the creation of non-productive structures in all periods of structural transition, using the available information on the ex ante technological structure.     

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。