智能预应力张拉压浆设备在预应力 张拉压浆中的应用

预应力张拉压浆在预应力混凝土施工中属关键工序,其施工质量的好坏直接影响到预应力混凝土构件的成品质量。采用智能预应力张拉压浆设备进行预应力张拉压浆,可最大限度的减少人为操作对预应力张拉压浆施工质量的影响,从而确保预应力张拉压浆质量,进而保证预应力混凝土构件施工质量,具有广泛的应用前景。     

挂篮悬浇预应力张拉工艺的应用

通过工程实例，简述了挂篮悬浇预应力张拉的工艺、控制和应用，预应力张拉就是在构件中提前加拉力，使得被施加预应力张拉构件承受拉应力，进而使得其产生～定的形变，来应对结构本身所受到的荷载。预应力采用两端对称同时张拉，张拉力和伸长量双控法，两端千斤顶升降压、画线、测伸长、插垫等工作一起进行。     

小半径曲线箱梁预应力钢束张拉施工技术

以阿拉乡互通立交桥A匝道桥曲线梁的预应力张拉施工为例,介绍了小半径曲线箱梁预应力钢束张拉施工阶段的技术控制要点,通过该项工程施工的成功验证,对同类型曲线梁桥预应力张拉施工有一定的参考价值。     

不对称预应力管道中钢绞线张拉伸长值计算

本文介绍了预应力管道中钢绞线在对称张拉、不对称张拉、单端张拉情况下伸长量计算过程,着重介绍不对称预应力管道张拉过程中0位移点的确定方法,并分别计算出0位移点两边钢绞线的不同伸长量。     

基于桥梁预应力张拉施工工艺的质量控制研究

随着我国预应力桥梁建设的迅速发展,施工质量控制显得尤为重要,而其中预应力张拉质量则是所有工序中的重中之重,直接影响到桥梁的安全性能和使用寿命。本文从预应力张拉过程中可能造成桥梁不安全的因素分析,继而针对这些因素提出相应的解决措施,为同类桥梁减少或消除预应力张拉施工质量隐患提供一定的借鉴。     

大跨度连续刚构桥悬臂施工期预应力损失研究

文章以在建麻昭高速公路牛家沟特大桥实际工程为背景,采用有限元法模拟桥梁悬臂施工期纵向预应力筋束的张拉过程,以预应力损失最小为原则确定最优的预应力钢束张拉次序,提出针对连续刚构桥预应力张拉施工的"先张拉顶板钢束,再张拉腹板钢束"的张拉次序原则,研究成果对有效预估连续刚构桥悬臂施工期预应力损失有一定参考价值。     

浅谈预应力箱梁超长曲线张拉质量控制

通过对张拉伸长量的控制,达到预应力张拉质量的保证,以及预应力箱梁质量的保证。     

预应力在施工中的应用

本文分析了施工中分阶段预应力筋张拉的基本思想,并以大梁施工为背景,详细分析了施工中分阶段预应力张拉的步骤,并对过程中的预应力损失进行了考虑.本文分析符合实际受力情况,分析结果可供工程设计参考.     

陈淌坪渡槽预应力筋张拉顺序的仿真分析及优化

文章以陈淌坪渡槽为例,结合大型分析软件ANSYS模拟方法,主要对预应力渡槽在完建期的预应力筋张拉顺序进行分析与研究。文章在陈淌坪渡槽设计者提出的预应力张拉方案的基础上,提出了对应的七种张拉方案,并对各种方案进行应力和挠度的分析和对比,得出优于设计者提出的张拉顺序张拉方案,以期能为预应力的施工提供指导,同时希望能为同类型工程提供参考。     

浅析桥梁张拉与注浆施工技术

结合后张法预应力混凝土连续梁张拉与波纹管真空辅助压浆的施工，对后张法预应力混凝土连续梁张拉与波纹管真空辅助压浆施工工艺、施工方法等进行了归纳总结。     

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。