超超临界二次再热机组热力系统优化分析

对于大型超超临界二次再热系统回热抽汽温度高、过热度大等情况,通过采用优化后具备回热式小汽轮机的超超临界二次再热热力系统,利用EBSILON软件对常规二次再热系统和优化后的热力系统进行仿真计算,最终优化后系统的抽油过热度大幅度下降。为对优化后系统的经济性做出进一步验证分析,运用拥分析理论,对常规二次再热热力系统和经过优化的系统的抽汽回热系统的指标进行了全面的计算和对比分析。     

330MW汽轮机组回热系统改造可行性分析

文章针对原型机组的设计及结构特点,从机组热力系统、汽轮机本体结构两个方面进行技术改造方案分析论证,在保证机组安全运行的前提下提高了机组运行的经济性,证明回热系统改造方案是可行的。通过对汽轮机回热系统的改造,机组设计给水温度可由256.1℃提高至274.3℃,可有效地提高机组运行循环效率,并降低发电煤耗。     

300WM汽轮机EH油系统常见故障分析

300WM以上大功率汽轮机的控制方式普遍采用DEH（数字电液控制）系统。EH油系统所起作用是完成DEH指令信号到汽轮机阀门动作的转换,EH油系统故障严重威胁汽轮机的安全、经济运行。文章分析了汽轮机调速系统EH油系统的四种常见故障,为汽轮机正常运行和故障处理提供参考。     

火电厂汽轮机辅机常见故障及检修方法

从油系统故障、异常震动、凝汽器真空偏低、调速系统摆动等方面阐述火电厂汽轮机辅机常见的故障及检修方法。     

浅谈EH油系统常见故障及分析

在汽轮机数字电液控制系统中,EH油系统作为重要组成部分,如果EH油系统出现故障,将会影响汽轮机数字电液控制系统的正常运行。为了确保EH油系统工作的稳定性,本文通过阐述EH油泵的工作原理,对EH油系统存在的故障进行分析,同时提出相应的政策建议,进而为处理EH油系统故障提供参考依据。     

600MW机组汽轮机轴封系统运行和调节中常见故障分析

针对600MW机组汽轮机轴封系统,从结构和运行方式结合汽轮机轴封系统的设备和主要特点,逐渐深入分析在运行中经常会存在的问题,针对这些问题和故障展开讨论,并指出进一步的改进意见。当设备反复发生故障时,我们有必要引起足够的重视。在处理轴封系统故障时,不但要从现象出发,更应该从轴封系统故障所引起的机组的不安全运行方式来正确判断,这样才能正确和迅速的处理事故,保证机组的长期稳定持续安全运行。     

试论电厂汽轮机运行中的故障及其处理对策

汽轮机是电厂运行主体设备之一,汽轮机在使用中操作不当等因素均会导致不同程度的故障。文章将电厂汽轮机运行中的常见故障类型进行了阐述,其中包括汽轮机异常振动、凝汽器真空偏低以及油系统故障等。针对不同的故障要能分析其特点,并采取必要的解决对策,确保电厂的稳定运行。     

汽轮机调速系统故障原因分析及处理

汽轮机调速系统关系到安全生产,所以对于其调速系统的故障要有所了解以达到对症下药。对汽轮机调速系统的机械构造进行了简单介绍,同时提出了汽轮机调速系统常见的故障,并就如何解决该故障提出了方案。期望能为相关生产单位提供参考。     

汽轮机调节系统的故障诊断与排除

针对汽轮机调节系统工作不稳定的情况,对汽轮机调节系统出现的故障进行了分析和诊断,总结归纳了影响汽轮机调节系统工作的几种主要故障及其排除方法。     

对继电保护故障的探讨

随着电力系统的发展,微机型保护和故障录波装置在系统中所占的比例日益加大,录取系统故障信息的能力也日益加强。充分发挥微机型装置的优良性能。通过介绍电网继电保护故障信息分析处理系统的开发使用情况,详述了保护故障信息景统应实现的功能及技术特点,客观分析了建立该系统时应注意的几个问题。     

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.