深井巷道围岩控制及支护研究

煤矿深部巷道围岩压力大,超过其围岩的抗压强度,现通过对深部巷道矿压特点、巷道破坏机理及支护技术进行研究,提出了深井巷道矿压的控制应该着重考虑巷道的优化布置和改善巷道的支护形式,充分发挥以锚杆为主体的新型支护以及锚喷、锚索、锚网等联合支护形式。     

深部高应力条件下岩巷锚杆支护参数研究

文章针对深部高应力区域的岩石巷道的支护结构作了专门的研究,基于锚杆支护设计理论和对已施工巷道支护效果的监测,确定了在深部高应力条件下的岩石巷道的锚网喷联合支护的主要支护参数,为相关支护设计提供了可靠的理论依据,对于类似地质条件下巷道围岩控制有一定的借鉴意义。     

深部高应力条件下岩巷锚杆支护参数研究

文章针对深部高应力区域的岩石巷道的支护结构作了专门的研究,基于锚杆支护设计理论和对已施工巷道支护效果的监测,确定了在深部高应力条件下的岩石巷道的锚网喷联合支护的主要支护参数,为相关支护设计提供了可靠的理论依据,对于类似地质条件下巷道围岩控制有一定的借鉴意义.     

新型注浆锚索支护成套工艺研究与应用

在煤矿井巷工程锚喷巷道施工中,为了提高软岩巷道支护强度,在锚杆支护基础上,根据巷道断面和巷道围岩的稳定情况增加了锚索补强支护,但由于软岩岩层松散,岩层裂隙发育,不得不进行锚索注浆,对岩层裂隙充填水泥浆液,可以将破碎或软弱的岩体胶结在一起,提高了岩体整体强度,充分实现了利用围岩自稳的能力,同时为锚杆、锚索提供可靠的着力基础,使锚杆、锚索对松碎围岩的锚固作用得以充分发挥.     

矿井深部开拓巷道围岩变形原因分析及防治研究

本文对于现阶段矿井深部开拓巷道围岩变形原因进行了分析，并且提出了相应支护技术的发展趋势，通过采用预拉力钢绞线来作为施工的锚杆，有效的对锚杆的承载力与约束力进行了保障，并且达到了控制变形，减少受爆破振动，提高强度，降低成本等目标。本文对于矿井深部开拓巷道围岩变形原因分析及防治的相关问题进行了分析与探讨。     

基于FLAC3D的深部巷道岩爆防治措施研究

深部开采中的岩爆灾害成为矿山发展必须要解决的关键问题之一.基于FLAC3D建立大红山铜矿深部巷道模型,对临时锚杆支护、喷浆支护及锚网喷支护三种方案进行数值模拟,分析顶板和拱脚处最大主应力和最小主应力,旨在防治深部巷道岩爆灾害.研究结果表明:三种支护方案对巷道顶板围岩应力状态影响较小;喷浆和锚网喷支护可有效改变拱脚处应力状态,岩爆剧烈程度从中等岩爆降低至弱岩爆,是深部巷道发生岩爆的有效防治措施.     

基于FLAC3D的深部巷道岩爆防治措施研究

深部开采中的岩爆灾害成为矿山发展必须要解决的关键问题之一.基于FLAC3D建立大红山铜矿深部巷道模型,对临时锚杆支护、喷浆支护及锚网喷支护三种方案进行数值模拟,分析顶板和拱脚处最大主应力和最小主应力,旨在防治深部巷道岩爆灾害.研究结果表明:三种支护方案对巷道顶板围岩应力状态影响较小;喷浆和锚网喷支护可有效改变拱脚处应力状态,岩爆剧烈程度从中等岩爆降低至弱岩爆,是深部巷道发生岩爆的有效防治措施.     

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。     

新安矿区深部极软岩巷道锚网喷+网壳联合支护技术应用与实践

针对新安矿区深部极软岩巷经常发生严重底臌、两帮收缩且折帮、顶板非对称下沉、巷道全断面内缩、锚杆(索)拉断、反复修护的现象,分析巷道破坏特征及原因。设计出了锚杆+金属网+喷浆+反底拱+网壳联合支护方式,即采用锚网喷初次支护,再采用网壳二次支护,主动支护与被动支护相结合,保证岩体强度,控制巷道变形。在该矿+535轨道石门应用后,工程实践表明,从根本上控制了轨道石门的非线性大变形,该支护技术有效地控制了深部极软岩巷道围岩的大幅度破坏,保证了巷道全断面的稳定,取得了良好的技术经济效果。     

矿井巷道支护中的支架支护技术

在煤矿生产中巷道支护可以稳定围岩状况、控制围岩运动的发展速度,维护工作空间安全。巷道支护分为分临时支护和巷道永久支护。巷道永久支护可分为锚杆(索)网喷支护、混凝土(料石)砌碹支护和支架支护。本文主要阐述了矿井巷道支护中,刚性支架支护工程验收标准、可缩性支架支护工程验收标准等问题。     

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.     

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.     

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.     

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.     

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.     

Sixty years of discrimination and diversity research in human resource management: A review with suggestions for future research directions

This article reviews discrimination and diversity research published in Human Resource Management (HRM) over the past 60 years. While discrimination and diversity are very different constructs, it is often informative to study them together, because when people recognize each other's diversity, this can result in bias, stereotyping, and discrimination. We conducted bibliographic searches for terms related to discrimination and diversity as well as a manual search through every title and abstract published in HRM over the last 60 years to assess article relevance. The search resulted in 135 research articles with 136 unique studies (i.e., samples) which are reviewed in this article. Sex and race are the demographics that have been examined the most in HRM, while religion has been examined the least. Moreover, the number of studies examining lesbian, gay, bisexual, transgender, and queer (LGBTQ) employees in the workplace in HRM has grown quickly within the past 10 years, culminating in a recent meta‐analysis. Our review looks at some of the earliest research published, the most recent research published, and the overall trends we identified in the research over the years for both discrimination and diversity articles. We then make future research suggestions and recommendations to advance the study of discrimination and diversity in the coming years.     

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.     

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.