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。     

超临界660MW燃煤机组二次再热

<正>随着经济社会发展,用电量日益增大,电厂经济性指标对电厂节能减排的影响日益凸显。因此,采取先进技术手段来提高电厂能量转换效率已成为研究开发的方向。超超临界二次再热技术是一种高效、环保的先进燃煤发电技术,处在最先进的技术范畴之内。二次再热设计技术被列为《国家能源技术“十二五”规划》重点攻关技术项目,是国家《2014—2020年煤电节能减排升级及改造行动计划》推进示范技术,     

热电联产机组对外供热系统抽汽方式优化

文章针对某热电联产工程的对外供热系统抽汽方式的选择问题,通过对三个抽汽方案的综合经济比较,提出该工程最优化的对外供热抽汽方式:引风机背压式汽轮机排汽供对外工业用汽,少量不足部分由二次再热冷段抽汽减温减压后提供。     

地铁盾构区间二次注浆施工技术

二次注浆技术在穿越江河等地质中应用极少,文章通过对二次注浆技术浆液材料性质、注浆压力、注浆量等进行分析探讨,并结合工程实践的运用,提出了关于二次注浆的一些实践经验,作为类似工程的参考和借鉴。     

沥青混合料双层摊铺工艺

针对高速公路日益增多的大修工程。双层摊铺技术由传统的两次摊铺改为一次摊铺,而且两层是热接缝的前级,有效的防止了水损害,并且缩短了工期,提高了效率。     

高强皮带机快速安装施工技术的研究与应用

矿山原有井下高强皮带机安装施工技术,是在皮带机头设备、机尾设备、中间架施工完毕后,再进行皮带的硫化;在皮带安装完毕后就进行运转,但是机头、机尾设备基础螺栓二次灌浆的混凝土未达到凝固期,混凝土的强度不够而无法正常运转。采用原有的施工技术,使皮带的安装工期延长,影响了矿井的煤炭产量。通过多个工程实践,总结形成了矿山井下高强皮带机快速安装施工技术,解决了"机头、机尾设备基础螺栓二次灌浆的混凝土未达到凝固期而无法运转"及"皮带机只有在机头设备、机尾设备、中间架施工完毕后,才能进行皮带的硫化"的难题。     

二次设备状态监测评估及动态重构示范工程设计

为达到在110kV智能站内校验二次设备功能在线评估技术及二次设备功能失效判断机理,笔者与相关保护厂家联合,结合具体工程制定设计方案,利用某新建智能站的主变间隔验证预设功能,对基于信息共享的二次设备功能软件化,组件化实现方法等技术问题进行预期目标考核。     

网友爆料:店员私拆"泡泡玛特"

近几年,紧张刺激又暗藏惊喜的"盲盒"在年轻群体中非常火爆.而就在近日,知名盲盒品牌"泡泡玛特"将拆过的盲盒进行二次销售一事,引发广泛关注和热议. 网友爆料 有网友爆料称,其在济南东部某商场的泡泡玛特门店购买了三个盲盒,回家后发现上面封盒处均有黄色胶水,感觉是把拆过的盲盒再粘上进行二次销售.     

大型火电机组热控专业施工管理

随着大型火电机组的自动化水平的迅速提高,热控专业在机组安装、试运过程中的重要性越来越突出,根据近期300MW、600MW机组安装的工程管理特点,针对工期管理、质量管理、安全管理、劳动力资源管理、工程协调管理等方面,总结出热控专业施工管理要点,突出表现为:超前施工、紧跟试运、及时调整、重视工艺、二次设计、成品保护等特点.     

液压箱梁模板制作技术创新

本文主要论述河南黄河工程局在"合武高速铁路"安徽境内新建铁路桥时,所采用的钢模板制造过程中四个创新技术点:①以"液压操作"替代"人工操作"。②以"一胎通模"制作替代模板"分块"制作。③弧形面板下料以"砂轮机冷切割"技术替代"火焰热割"技术。④面板二次切割,避免偏差保证质量。全液压箱梁钢模板制作使用的创新技术可在各种工程施工中推广运用。     

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。