城市轨道隧道盾构区间污水管改移顶管安全施工工程探讨

安全施工是城市轨道工程建设中的重点内容,在城市轨道隧道盾构施工中,由于盾构在穿越城市污水管时存在一定的风险,为保证施工安全顺利进行,需要对污水管进行迁改保护。文章以成都轨道交通17号线一期工程温泉大道站～明光站盾构段施工为例,对城市轨道隧道盾构区间污水管改移顶管安全施工方案与技术措施进行具体的探讨,以供参考。     

盾构隧道下穿高速公路高架桥施工安全风险评估

盾构隧道下穿既有构筑物时,不确定因素很多,在施工中极易发生事故,为降低和控制施工风险,有必要对下穿构筑物的施工风险进行评估。根据盾构隧道下穿东环高速公路概况分析和数值模拟计算,结合既有工程经验,采用工程经验评估法对盾构隧道下穿公路高架桥风险进行识别与分析,并提出相应的风险控制措施。     

斜井盾构组装始发方案比选研究

针对神华新街台格庙矿斜井盾构斜向始发问题,设计了掌子面组装始发及地面组装步进始发两种盾构组装始发方案,分析了两种方案的特点,并从施工的安全、施工难度及成本等方面对两种方案进行了对比分析,确定了该工程采用地面组装步进始发方案,为后续类似工程盾构施工组装始发方案选择提供了指导与借鉴.     

地铁区间隧道盾构钢套筒辅助接收技术分析

盾构接收施工是隧道施工中的关键点,也是盾构隧道施工中极易出现事故的阶段.在本次研究中,以黄土岭站～砂子塘站区间为研究对象,对区间左线盾构接收钢套筒辅助作业施工方案以及施工技术要点进行详细探究,以期为类似工程提供借鉴.     

盾构隧道下穿京广铁路沉降分析与保护措施

盾构隧道穿越铁路施工过程引起的地层沉降,可能给上方运营铁路带来安全风险,文章以武汉地铁小东门站-武昌火车站区间盾构隧道下穿京广铁路为例,通过数值计算分析了盾构隧道施工对既有京广铁路的沉降影响,结合当前盾构施工技术水平和铁路局关于铁路的保护要求,提出了盾构施工控制措施和铁路安全保护措施,京广铁路是我国的南北大动脉干线铁路,通行铁路多、安全要求高,不容有任何闪失,随着本项目的成功实施,可为今后类似工程提供参考。     

隧道盾构施工风险文献综述

盾构施工是当下隧道工程较常采用的施工工艺.由于盾构施工的特殊性,再加上隧道工程本身的复杂性,使得隧道盾构施工的风险也较为特殊.从盾构机进出洞风险、盾构掘进风险两个方面对隧道盾构施工风险进行综述,并针对盾构施工中盾构机选型这一难题,给出了相应的对策.     

南宁地铁盾构施工风险管理研究

南宁地铁盾构区间隧道主要经过富水的砂卵石地层,呈现出地下水位高、地层强度高、卵石含量高的工程和水文地质特点。文章针对南宁特殊工程和水文地质特点,从机械、施工操作、对周边环境影响三方面分析了地铁盾构施工存在的风险,提出了盾构施工风险防范的具体措施。     

城市地铁盾构隧道地表沉降研究

城市地铁盾构隧道近接施工会引起复杂的地层效应,盾构隧道近接施工时,中间土体的变化规律是地层效应的研究重点,对于地面沉降的控制具有重要意义。结合广州城市轨道交通5号线动物园站~杨箕站盾构隧道工程,本文基于有限元分析,对城市地铁盾构隧道近接施工常见的水平平行、斜45°平行和上下重叠三种形态进行了数值计算,分析了不同形态下的土层位移与地表沉降。经实践检验,所得结果对于工程的顺利开展具有指导意义,也可为同类工程所借鉴。     

盾构施工中的风险辨识和对策探讨

根据工程风险管理的理论以及施工实践经验,对隧道盾构施工的风险点进行辨识分析并提出对策和控制措施.     

小半径曲线盾构始发和到达施工技术

为解决盾构在小半径曲线内始发、到达的难点和风险,文章以广佛线地铁某盾构标段盾构在320 m小半径曲线内始发和到达的施工为研究背景,对盾构在小半径曲线内盾构始发和到达施工的风险进行了系统研究,并提出了相应的控制措施、取得了较好的效果,为今后类似工程的施工提供了借鉴。     

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。