LTE宽带集群通信技术发展及应用

LTE技术在宽带数字集群通信中的应用,已经成为通信领域的研究热点。本文结合集群通信系统发展需求和现状,分析了LTE宽带集群技术面临的挑战,阐述了解决关键技术的方法。     

宽带载波在用电采集系统中的应用与调试

随着载波通信技术的发展,宽带载波通信技术日臻成熟,由于具有速度快、路由性能强、抗噪声能力出色等优势,因此具有广泛的应用前景。文章针对目前用电信息采集系统的主流本地通信技术进行分析,对宽带电力线载波通信技术的应用前景结合用电信息采集系统进行了研究。     

光通信技术在宽带通信中的应用

随着光通信技术的发展,其优越性越来越明显,应用也越来越广泛.本文分析了光通信系统的原理、宽带通信技术.重点讲述了网络的宽带化和光纤通信,以及在新领域中的光通信技术.     

基于电力线宽带通信技术的视频共享系统研究

本文通过研究电力线宽带通信技术以及视频共享中H.264编码、HDMI技术、音视频同步和遥控信号的传输多种关键技术,理论分析得出电力线宽带通信技术在实现视频共享中的可行性。进而提出该系统的系统架构以及具体实现方法,并通过实验平台的搭建与实验数据的实际测试,验证了理论分析结果以及实现方法的正确性。     

浅谈电力线载波通信技术

电力线载波通信作为一门古老而年轻的通信技术,广泛地应用在各种通信领域中。中低压电力线载波通信技术因其具有建设成本低、无须另外布线等天然的优势,在配网自动化系统、大用户抄表系统、低压抄表系统以及农村地区宽带网络接入等方面被业内人士看好,其发展潜力巨大。     

XDSL技术在铁路通信网中的应用

近年来，“信息高速公路”的浪潮席卷整个世界。建设信息高速公路首先要解决的是信息网络的宽带化。综合通信业务的发展，极大地促进了传输、交换技术的研究和发展，同时要求提供高速、宽带的数字用户电路，以解决综合通信业务的用户接入问题。目前，一种建立在现有铜双绞线基础上的数字化用户环路技术（XDSL），     

宽带PLC和窄带PLC通信技术对比研究

随着时代的发展和社会的进步,我国的通信行业获得了快速发展。通信行业的发展离不开通信技术的支持,文章以宽带PLC和窄带PLC通信技术为研究对象,对宽带PLC和窄带PLC通信技术进行了介绍,对两者的应用情况进行了对比。     

宽带载波通信在中压配电网的应用

针对中压配电网的特点,提出一种以配电网自身作为高速数据传输介质的宽带载波通信技术,将中压配电网转变为一个高性能的数据传输骨干网。利用该技术无需对通信线路进行投资或对电网进行改造,只要在中压电网的节点处（一般在开闭所、环网柜、配电室等处）安装设备,即可低成本地实现配变用电需求侧各类信息与控制系统的远程宽带通信,同时可以实现网络数据、控制和语音信号的传输。文章首先简要介绍了目前我国配电网中的主要通信方式,并列举了其主要优缺点,将其分别和宽带载波通信比较后,发现在目前的技术条件下,宽带载波通信具有很大的优越性。在此基础上,介绍了宽带载波技术的发展历程及其在中压配电网中的具体应用与其性能测试。     

软交换技术在电信运营商中的应用

随着通信网络技术市场的飞速发展,宽带业务的要求也在迅速增加。为了满足市场的需求,下一代的网络的概念很快被各大电信运营商接受,软交换技术成为了下一带通信网络解决方案的重要途径。我国的863计划也将有关软交换系统在多媒体和移动通信系统方面的研究课题立项研究。     

视频通信系统的应用实现

宽带通信技术和数字视频处理技术的迅速发展,为视讯通信业务面向公众广泛运营已经准备好技术条件。结合当前通信领域和计算机领域的出现的技术,对如何实现远程视频通信进行研究。     

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。