浅析软启动器在煤矿企业的应用

软起动器是一种集电机软起动、软停车、轻载节能和多种保护功能于一体的新颖电机控制装置,目前在煤矿电气控制系统中已经得到广泛的应用,并且具有广阔的发展前景。本文简单介绍了软启动器的工作原理,重点分析软启动器在煤矿中的应用。     

简述变频器和软启动器在供水系统中的比较应用

文章通过对变频器和软启动器在供水系统中的应用进行比较,对软启动器控制原理进行介绍,具体以采用变频器控制的供水系统为例进行计算,总结出变频器控制系统在节能降耗方面比软启动器更具有优势。     

高压固态软启动装置应用中的若干问题

随着电力传输距离的增长,电压损失也逐渐增加,高压电动机启动方式的选择就尤为重要。文章结合实际工程阐述了高压固态软启动器的应用,高压固态软启动器接线方式及注意事项,以及中高压固态软起动装置的二次控制部分问题,旨在为相关人员提供参考。     

软启动器在排水泵站自动化系统中的运用探讨

排水泵站自动化系统中软启动器有着非常深入的应用，本文在对软启动器进行了概述的基础上，对ABB软启动器的配置进行了分析，并探讨了整个应用过程中需要注意的要点，希望能够对我们的工作起到一定的指导作用。     

高压固态软启动装置应用中的若干问题

随着电力传输距离的增长,电压损失也逐渐增加,高压电动机启动方式的选择就尤为重要.文章结合实际工程阐述了高压固态软启动器的应用,高压固态软启动器接线方式及注意事项,以及中高压固态软起动装置的二次控制部分问题,旨在为相关人员提供参考.     

低压软启动器在九钢轧钢水处理水泵上的应用

低电压软启动器以体积小,转矩可以调节、启动平稳、冲击小并具有软停机功能等优点得到了越来越多的应用。简要介绍了目前常用的软启动器的类型和在九钢轧钢工程的应用实例。     

低压电机软启动器在煤矿中的应用

分析低压电机软启动器在井下应用在输送机中所具备的优点,并且论述了低压电机软启动器的工作原理、结构组成、及所具备的各项保护功能.及其在生产中的高可靠性,有利于提高生产效率,降低维护成本.     

调频调压软启动器在煤矿综采刮板输送机上的应用

主要讨论了调频软启动器在刮板机上的应用，论述了刮板输送机的启动对软启动装置的技术要求，提出了解决问题的方法。     

潮州供水枢纽电站渗漏排水系统自动控制设计

文章介绍了潮州供水枢纽工程及渗漏排水系统组成,对现地控制单元、软启动器、测量元件、控制方式、控制流程等自动控制设计进行了阐述,最后简要介绍了渗漏排水系统运行情况。     

基于单片机的交流异步电机软启动器节能运行研究

介绍以at89s52为核心的交流异步电动机软启动器的工作原理，并设计了人机界面，从而可对电机运行的各参数进行设定和修改。借助功率因数测量电路和软启动器的晶闸管调压电路组成的闭环反馈系统，单片机可以根据负载变化相应地调整电机输出电压，使电机始终工作在设定功率因数下，从而实现交流异步电机的恒功率因数控制，达到节能运行的目的。     

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.