浅谈GW1型拱形支架滚压成型机的安装与调试

矿用U型钢压模成型的GW1型拱形支架滚压成型机,该机器是目前国内比较先进的矿用U型钢滚压设备。在此将研究GW1型拱形支架滚压成型机的主传动系统和控制系统,其中重点在于GW1型拱形支架滚压成型机的安装与调试。     

U型钢架棚支护技术的研究与实践

随着经济的发展，U型钢在煤矿生产领域得到广泛的使用，为了确保煤炭生产的安全性，需要提高U型钢架棚支护巷道的抗压强度。为此，本文通过创新U型钢棚子顶撑子的连接方式，提高抗压强度，进而丰富了U型钢架棚支护技术。     

H型钢与U型钢组合式基坑支护施工技术

用H型钢作为主受力构件,U型钢作为连接支护体,H型钢与U型钢之间采用槽型插口式活动连接,形成一种铰接的锁口形式,并在两个型钢的插口之间留有15mm左右的间隙,用以校正型钢的垂直度偏差和型钢之间的间距偏差,通过两种型钢之间的锁口互连,形成灵活的组合式钢板桩从而达到对基坑进行支护的目的。     

分析U型钢支架结构稳定性及其控制技术

针对围岩的强力变形情况，不仅需要提高支护的强度，同时必须保障支护的稳定性。目前在我国的煤矿巷道当中，尤其是在软岩之上的支护问题较为严峻，在整个支护过程当中，U型钢支架遭受破坏的情况十分严重。导致此种情况的发生主要有两个方面的因素，即内在因素和外在因素。具体说来就是岩层的压力以及U型钢支架结构存在的问题。以下主要针对不稳定的因素和对策进行了分析。     

U型钢支护技术在煤矿巷道中的应用

煤炭资源关系到国家经济社会的健康有序发展,矿井的安全与否对国民经济的发展和社会发展都具有中大的作用,随着浅层煤炭资源开采日益枯竭,煤矿逐步向更深的方向发掘、矿井越深承受的来自各个方向的压力也就越大,煤矿巷道的变形与否直接与煤矿安全开采有重大的关联。U型钢技术在煤矿巷道中的应用主要是为了抗击来自煤矿巷道中各个方向的压力,确保煤矿巷道不变形,不变质,能够抵住各种压力,从而确保煤矿巷道的安全。本文主要对U型钢支护技术在煤矿巷道中应用的优点、存在的缺点以及实际的应用进行了探讨。     

U型钢异形梁在煤巷交岔点的支护技术研究

巷道交岔点对矿井巷道安全起着至关重要的作用,文章针对目前煤巷交岔点支护形式存在的弊端,提出了U型钢暗抬门支护技术方案,增加交岔点的有效断面,控制了围岩的强烈变形。     

陆地资料层间多次波压制技术优化研究

在陆地资料中,层间多次波在地震勘探过程中是一种顽强的干扰波,它的存在严重影响了成像的真实性与可靠性。由于陆地资料本身的复杂性,使得层间多次波在成因和类型上更加复杂。在实际陆地资料层间多次波的压制处理中,用单一的方法很难同时兼顾到近偏数据和远偏数据的压制效果,从而影响最终的成像效果。通过对逆散射级数法及Radon变换法原理及效果的分析比较,并根据实际资料处理结果,提出了联合逆散射级数法与Radon变换法压制层间多次波的最优化处理流程,使层间多次波得到最佳的压制效果,提高了地震资料的分辨率和成像精度。     

矿用气扳机的应用

气扳机具有安全防爆、扭矩大、重量轻、体积小、效率高,结构简单,维修方便等特点,能够满足煤矿井下气压波动大条件下的使用要求。可用于U型钢支架和锚杆支护螺母的旋紧与拆卸,树脂锚杆的搅拌,保证了U型钢支架和锚杆支架的使用性能提高支护质量。     

复合支护维修井底车场实践

三李矿在维修井底车场过程中,根据现场的围岩情况,灵活地采用了锚网喷+锚索、U型钢底梁、U型钢异型梁对巷道进行了维修,起到良好的支护效果,实现了安全生产,具有一定的借鉴价值.     

压制与释放——以女权主义批评析凯特·肖邦的《惊心动魄的一小时》

女权主义的界定及分类加以梳理与回顾,提出压制与释放的概念,并指出了妇女受压制的根源与释放压制的途径。通过分析凯特·肖邦的《惊心动魄的一小时》中女主角对丈夫死讯的反映。     

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.     

Incumplimiento del salario mínimo en Europa central y oriental

En este estudio se analiza el incumplimiento del salario mínimo durante el periodo 2003–2012 en diez países de Europa central y oriental con salario mínimo obligatorio nacional. A partir de los datos de EU‐SILC y la metodología propuesta por Bhorat, Kanbur y Mayet (2013), se cuantifica la incidencia y magnitud del incumplimiento. Se realizan análisis de regresión sobre determinantes individuales, laborales y macroeconómicos. Aunque la incidencia permanece relativamente baja, los trabajadores a los que se dirigen las políticas de salario mínimo parecen los más expuestos a su incumplimiento. Con el tiempo, una mayor incidencia se asocia a una razón más alta entre salario mínimo y salario medio.     

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.     

Cultural Economy Planning in Creative Cities: Discourse and Practice

While a growing body of research analyses the functional mechanisms of the cultural or creative economy, there has been little attention devoted to understanding how local governments translate this work into policy. Moreover, research in this vein focuses predominately on Richard Florida's creative class thesis rather than considering the wider body of work that may influence policy. This article seeks to develop a deeper understanding of how municipalities conceptualize and plan for the cultural economy through the lens of two cities held up as model ‘creative cities’ — Austin, Texas and Toronto, Ontario. The work pays particular attention to how the cities adopt and adapt leading theories, strategies and discourses of the cultural economy. While policy documents indicate that the cities embrace the creative city model, in practice agencies tend to adapt conventional economic development strategies for cultural economy activity and appropriate the language of the creative city for multiple purposes.     

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.     

Input/output ranges and performance: an examination of US machine tool producers

Despite the establishment of high-tech multinational enterprises (MNEs) in Ireland since the late 1950s, the country did not succeed in closing the technological gap with most of its EU counterparts. The weak National System of Innovation (NSI), and in particular low business and government R&D levels, combined with a lack of research and technology linkages between MNEs and indigenous firms, explain these poor results. However, the Shannon region in the West of the country presents some specific institutional characteristics that could theoretically make the region a strong technological enclave. The various actors in the region - i.e. the administrative, financial, political and research institutions, as well as the business organizations - have indeed infused a new type of economic development. After a brief review of the available concepts and models articulated around these actors and their interrelationships, the paper analyses whether the Shannon region, taken as an illustrative example, mirrors a specific economic and technological localized setting. The study is based on a survey of indigenous and foreign firms.