巷道振波超前探测技术在煤矿巷道掘进中的应用

本文主要介绍了巷道振波超前探测技术在煤矿巷道掘进的实践应用,主要是利用矿井震波超前探测法控制巷道前方的构造发育情况,减少巷道的报废,为巷道的设计修改和安全掘进提供地质资料。     

综采工作面跨采巷道围岩支护及矿压规律研究

随着矿井开采强度的不断增大和煤矿开采深度的不断加深,动压对巷道的影响加剧,巷道围岩变形严重,使巷道围岩难以控制,进而影响矿山生产安全。本文通过监测研究跨采巷道围岩控制技术问题,解决跨采条件下受跨采影响巷道支护难题,为底板巷道围岩支护提供理论依据。     

灰岩巷道地质前探技术改进

通过改进灰岩巷道地质前探技术,为判别煤层顶底板提供了依据.本文通过分析过去的灰岩巷道前探技术,并对该技术进行改进,为灰岩巷道施工提供安全的地质保障,进而有利于矿井的安全、高效发展.     

煤矿软岩巷道支护技术的研究及发展

本文主要对软岩的概念进行了简单的介绍,并指出了如今煤矿软岩巷道支护中存在的问题,然后针对问题提出了一些改进的建议。具体包括软岩巷道支护的最佳时间、软岩巷道支护的关键技术分析和针对软岩巷道支护问题的对策等,为巷道工作人员提供参考。     

深井复杂条件下巷道围岩治理模式

为探讨复杂条件下巷道支护困难的难题,结合某矿运输上山复杂的地质条件,在现有支护方案的基础上,通过对巷道支护效果的现场监测,得出巷道变形的特征,在此基础上,分析了巷道围岩破坏失稳原因,并针对性地提出了巷道围岩治理模式,为矿井后续巷道的支护决策提供参考依据。     

锚网支护巷道围岩监测综合技术研究——以平煤股份八矿为例

该项目通过对已施工的锚网支护巷道实行跟踪监测,掌握锚网支护巷道的帮顶位移特性,以此来判断巷道锚网支护的支护效果,进而总结出巷道帮顶岩性、支护形式、巷道跨度、断面形状与围岩变化之间的规律,为锚网支护设计提供技术依据。     

煤矿深部巷道锚杆支护优化设计研究

针对深部巷道复杂的应力环境和多变的围岩性质,对深部巷道围岩的稳定特征进行了数值模拟和数据分析,为深部巷道锚杆支护提供了理论依据,并对锚杆支护参数进行了优化设计,确保了深部巷道支护的最优化和长期稳定。     

五阳煤矿西翼扩区中央轨道大巷支护技术研究

西翼扩区中央轨道大巷为五阳煤矿西翼扩区的开拓巷道,为扩区布置的第一条巷道,由于没有临近相似条件的巷道支护方案进行参考,所以必须对于西翼扩区首条开拓巷道的支护方案进行FLAC计算机模拟,确定较优方案。今后为扩区其它巷道提供可参考的依据。     

浅谈岩巷掘进机常见故障及维护

掘进机作为巷道综掘机械化的关键设备,它性能的好坏影响巷道掘进的速度和质量。近两年,我们淮南矿业集团尝试使用岩巷掘进机施工硬岩巷道,本文对岩巷掘进机常见故障进行分析,并提供其维护处理方法。     

矿井巷道变形破坏原因分析及设计施工研究

矿井巷道分为直立巷道、水平巷道和倾斜巷道三种,它是矿井生产中提供运输、通风、排水等基本功能的通道,是实现地下采矿作业的关键。由于地下作业环境极为复杂,矿井巷道也经常会受到各种因素的影响而发生变形和破坏,不仅会影响正常的生产秩序,更重要的是还会直接威胁到井下人员、设备的安全。因此,我们必须对这些破坏因素进行充分的考虑和分析,对巷道进行科学的设计,才能减少巷道的变形和破坏,确保巷道的正常使用和井下人员、设备的安全。本文从巷道设计角度出发,分析了造成巷道变形破坏的原因,对巷道设计中需要注意的几方面问题进行了研究和探讨。     

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。