机载临时支架装置的应用分析

《煤矿安全规程》规定:"掘进工作面到永久支护之间,必须使用临时支架或金属前探支架,严禁空顶作业",多年以来,困扰煤矿生产的一项技术难题就是巷道掘进临时支护的安全问题。目前我国主要采用窜管前探梁和支柱加横梁两种临时支护形式。但是这两种方式不但降低了掘进效率,并且造成了着空顶区的锚固作业的安全隐患。针对这种情况,凤凰山矿引进一种掘进机机载临时支护装置,替代原有的临时支护方式。该装置实现了临时支护的机械化,使锚护工人的安全得到了有效的保障。但也存在一些问题,通过分析这些问题,指明超前支护设备的改进方向,以发展快速掘进中的临时支护技术。     

浅谈响水矿回风斜巷掘进工作面临时支护方式及应用

煤矿巷道掘进过程中,工作面临时支护安全问题是困扰煤炭生产多年的一项技术难题。应该本着科学规范、先进、实用的理念设计巷道掘进工作面的临时支护结构,保证岩体稳固,减少顶板冒落事故。煤矿掘进树锚支护中采用打设点锚进行临时支护,是对破碎围岩进行有效控制,保证掘进工作面安全施工的关键。     

煤矿掘进工作面临时支护问题研究

掘进工作面临时支护中,由于各方面因素的影响,经常会发生事故,造成严重的危害。文章以某矿为例,探讨了在掘进工作面中的许多支护措施,然后进行对比,希望对做好掘进工作面临时支护工作提供帮助。     

综掘工作面机械化临时支护研究

在分析临时支护机的设计原则的基础上,通过对ZJC2×800/19/28型巷道机械化临时支护的分析,阐述了支架操作安全注意事项,为综掘工作面临时支护提供了一种新型的方法,提高了临时支护的效率,解决了临时支护制约掘进速度的瓶颈。     

试析复杂地质条件下巷道快速综掘临时支护技术

在复杂地质条件之下进行快速掘进,支护技术起着至关重要的作用。支护技术不仅影响着掘进的速度和效率,而且也担负着安全生产的重大责任。目前我国在这方面的支护技术还存在速度较慢、支护面积太小、支护效果不佳等问题。针对这些问题以下主要讨论了复杂地质条件下,巷道快速综掘临时支护技术的关键、方式等。     

试析复杂地质条件下巷道快速综掘临时支护技术

在复杂地质条件之下进行快速掘进,支护技术起着至关重要的作用。支护技术不仅影响着掘进的速度和效率,而且也担负着安全生产的重大责任。目前我国在这方面的支护技术还存在速度较慢、支护面积太小、支护效果不佳等问题。针对这些问题以下主要讨论了复杂地质条件下,巷道快速综掘临时支护技术的关键、方式等。     

探析复杂地质条件下巷道快速综掘临时支护技术

本文在研究复杂地质条件下巷道快速综掘临时支护技术的过程中,首先是分析了在复杂地质条件下掘进支护技术的关键点,在明确支护重点后,描述了当前使用普遍的几种临时支护技术。接着对综合机械化掘进临时支护技术体系进行详细分析,该体系的应用缩短了作业时间,是适应目前煤矿的实用临时支护技术。最后对临时支护技术的未来发展作出展望。     

综掘巷道支护技术及装备的发展与应用

分析了国内外综掘工作面巷道支护技术及装备的发展概况,介绍了我国目前综掘工作面常用的快速掘进和支护的几种形式,分别指出了制约快速支护的问题所在,为我国煤巷快速支护技术及装备的发展指明方向。     

机载临时支护技术在寺河矿的应用实践研究

本文以寺河矿岩巷锚喷支护巷道单巷掘进工作面为背景,结合前探梁和气腿两种临时支护存在支护强度低、支护面积小、操作不便及安全系数低等缺点。通过对比分析在掘进机悬臂的中上部设计开发出一种机载临时支护装置,该装置具有选位合理、结构简便、对掘进机的改造量小、不干扰掘进机的正常截割作业功能。进而优化了单巷掘进、支护工艺,降低了劳动作业强度,提高了掘进效率和安全系数。     

综掘工作面快速掘进技术研究与实践

主要介绍新集二矿为了提高煤巷综掘掘进速度,在现有综掘机的基础上对临时支护工艺进行了改革,并且合理优化了工序,实现了多工序平行作业,有效的提高了掘进速度和工效,保证了工作面的正常接替,创造了丰富的经济和社会效益.     

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。