软岩条件下新奥法施工工艺研究

软岩巷道支护技术是巷道支护过程中遇到的难题之一,巷道开挖引起应力重新分布、巷道变形,特别是在"三软"(顶板软、底板软、煤层软)条件下巷道变形尤为严重,仅靠锚网支护很难达到预期效果。通过对软岩条件下新奥法施工工艺研究,实践证明在清水营煤矿+965m水平车场使用新奥法施工技术,有效地降低了巷道维修成本,增加了巷道施工的安全性。     

深部松软煤层巷道支护技术研究

在煤矿开挖工程中,对于煤矿深部松软煤层巷道支护施工时,掘进过程会伴有大量的顶帮劈冒、相对位移量大,造成严重的围岩破坏。因此,必须针对煤层巷道采取加强支护措施。文章就深部松软煤层巷道支护技术进行研究,结合工程实际特点,制定合理的巷道支护方案,有效控制围岩变形,提高施工质量。     

软岩巷道支护新奥法的设计与施工程序探讨

正确合理地选择支护形式和参数是软岩巷道支护设计的最终目标。文章探讨软岩巷道设计方法中的新奥法的设计与施工。     

煤矿锚喷巷道修复工程中存在的问题与支护技术分析

巷道支护工作是煤矿施工工程中的安全保障,良好的巷道支护工作不仅能够保障巷道围岩岩体的稳定性,保证施工的顺利和促进施工进度的提高,同时也可以降低因为巷道围岩变形和位移造成的矿难事故发生机率。锚喷支护技术是巷道支护技术中较为使用和应用较为广泛的支护技术,是一种较为成熟的支护技术。本文主要阐述锚喷支护技术在煤矿巷道修复工程中存在的问题与分析。     

浅埋及软弱围岩隧道变形监测回归分析的应用

围岩及支护变形的监控量测是隧道新奥法施工的一个重要环节,通过对围岩及支护变形的监测,以了解各施工时期的困岩与支护结构的动态变化。进而评价围岩的稳定、初支及衬砌的合理可靠性。监控量测对于预测围岩最终稳定时间,确保隧道施工安全,确定二砌施做时间也是至关重要的。     

新奥法在隧道施工中的应用及发展

新奥法在隧道施工中应用广泛,具有动态的力学受力特性.介绍了新奥法施工的原理,将围岩视为承载结构的重要组成部分.分析了新奥法的应用过程,在实际工程的应用中不断得到发展和进步.突出新奥法在施工过程中监测的重要性,以及新奥法延伸发展的超前支护.同时新奥法也存在相关的问题,文中也指出了在技术和施工水平上可能存在的不足,以便在未来能够得到修正和提升,弥补在实际应用中的缺陷.最后论述了新奥法的发展趋势,与动态信息化的设计相协调,共同作用于实际的工程中.     

锚杆支护施工应注意的问题与施工工艺探讨

锚杆支护是在巷道掘出后,先向围岩打眼,在眼孔内锚入锚杆,将巷道围岩加固,利用围岩的强度,实现支护巷道的目的。本文主要阐述了锚杆的各种分类、各类支护要选择合理的参数、锚杆支护施工应注意的安全问题、锚杆施工工艺等技术问题。     

隧道Ⅴ级围岩喷射混凝土衬砌厚度数值分析

喷射混凝土作为新奥法施工的三大必须手段之一,对洞室围岩起到支护的作用,其中喷射混凝土衬砌的厚度对围岩支护效果影响较大。本文针对公路隧道Ⅴ级围岩进行UDEC数值模拟,分析不同喷层厚度对围岩稳定性的影响。结果表明,对于Ⅴ级隧道围岩,要采用钢拱架、钢筋网、锚杆和喷射混凝土联合支护,且喷射混凝土厚度为25cm时,支护效果最好。研究结果为隧道初期支护施工设计提供了科学依据和参考。     

松软破碎围岩地层掘进、支护方式

针对在建某煤矿井底车场地压大、围岩松软,极为破碎、巷道爆破成型差,支护后巷道变形严重问题,通过对巷道围岩破坏机理的分析,确定了一套采用钢管帷幕法前探支护掘进,36U型钢 壁后、巷底注浆的支护技术,实践表明,该技术有效解决了松软围岩巷道掘进支护难的难题。     

松软破碎围岩地层掘进、支护方式

针对在建某煤矿井底车场地压大、围岩松软,极为破碎、巷道爆破成型差,支护后巷道变形严重问题,通过对巷道围岩破坏机理的分析,确定了一套采用钢管帷幕法前探支护掘进,36U型钢 壁后、巷底注浆的支护技术,实践表明,该技术有效解决了松软围岩巷道掘进支护难的难题.     

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.     

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。