双路直流供电系统的电源叠加风险及排解

双路直流系统可以提高供电的可靠性,不接地系统中双路直流电源经二极管隔离的供电方式可能潜在电源叠加的风险,组建电源系统应慎重考虑、妥善排解。双路直流供电也有其支路差流的不确定性,对支路接地监测、母线接地监测提出了新的要求。文章分析了双供电系统的特点并提出了解决方案。     

接地系统设计探讨

以武汉卷烟厂动力中心为例,叙述接地系统的设计:采用TN-S接地系统,在锅炉房做防静电接地,在电源进出线处设置总等电位联结MEB,在弱电机房、能源管理中心等处设置局部等电位联结LEB,采用综合接地系统,利用建筑物基础做接地网.     

计算机网络系统接地的技术及应用

接地系统是提高计算机网络系统可靠性、抑制噪音、保证机房设备安全的重要手段,本文分析了计算机网络设备的接地、计算机网络机房屏蔽接地、防雷保护接地、计算机场地防静电接地等几种接地的特点和它们之间的相互关系以及在计算机网络系统中的应用,最后通过分析给出了计算机网络系统的接地策略。     

变电站接地网及接地电阻的研究

介绍了变电站接地系统中接地电阻和接地网的设计原则，根据工程实际分析了降低接地电阻的具体措施，以及接地网的配置要求，提出了正确评判电站接地系统的原则．     

对小电流接地系统的接地选线问题的探讨

概述 电力系统的接地方式有三种．一种是电源中性点不接地。一种是电源中性点经消弧线圈接地．一种是电源中性点直接接地。我国3-63KV系统．大多采用电源中性点不接地的运行方式。只有当接地电流大于某不定期数值时（3-10KV电网中接地电流大于30A、20KV及以上电网中接地电流大于10A时）才按规定采用电源中性点经消弧线圈接地的运行方式。110KV及以上的系统及220／380V的低压配电系统．则一般采取电源中性点直接接地的运行方式。     

变电站中接地系统应用探讨

变电站接地系统是电力系统中的一个重要组成部份,其安全性、可靠性、经济性向来都是接地系统研究工作中的侧重方向。文章对变电站新型接地系统中运用的材料及接地方式的选择进行了初步的探讨。     

电气设备接地保护技术探讨

在电气设备接地保护系统的设计和安装中,土壤的复杂结构特性对接地系统有很大影响。文章介绍了现今使用的三种接地系统并结合弱电机房的接地保护安装的实例,对电气设备接地保护技术进行研究和分析。     

高速铁路综合接地施工工艺

综合接地系统是将铁路沿线的牵引供电回流系统、电力供电系统、信号系统、通信及其他电子信息系统、建筑物、道床、站台、桥梁、隧道、声屏障等需接地的装置通过贯通地线连成一体的接地系统。现就高速铁路综合接地的施工工艺进行简要分析。     

雷电防护中的接地技术探讨

文章从接地的种类划分、接地的作用、接地系统制作需要注意的问题以及采用共用接地系统达到最好的接地效果等几方面阐述了接地的重要意义。     

建筑物电源SPD在线监测系统的接地状态研究

本文针对加油(气)站等易燃易爆危化品场所安装的电源SPD在线监测系统的接地状态进行研究,首先阐述了建筑物电源SPD接地状态监测的意义,然后针对建筑物电源SPD的几种接地方式进行具体的分析说明。再对建筑物电源SPD的接地引线断开或接地引线过长造成的影响进行分析,最后对建筑物电源SPD的接地状态的监测方法进行说明,以综合系统的分析来确保电源SPD接地状态的监测质量,保障电源SPD在线监测系统的安全运行,确保易燃易爆场所的设备安全。     

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。