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高产高效工作面顶板走向钻孔瓦斯抽采技术 被引量:80
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作者 王海锋 程远平 +1 位作者 沈永铜 刘海波 《采矿与安全工程学报》 EI 北大核心 2008年第2期168-171,共4页
以祁南煤矿349工作面为工程背景,结合采场围岩控制理论,分析了高产高效工作面采空区上覆岩层移动及裂隙发育特征;得出工作面推进速度与顶板走向抽采钻孔在垂向上的布置高度成反比关系.349工作面项板走向钻孔参数优化和抽放效果实践... 以祁南煤矿349工作面为工程背景,结合采场围岩控制理论,分析了高产高效工作面采空区上覆岩层移动及裂隙发育特征;得出工作面推进速度与顶板走向抽采钻孔在垂向上的布置高度成反比关系.349工作面项板走向钻孔参数优化和抽放效果实践表明,当工作面推进速度为5~6m/d时,顶板走向钻孔应布置在冒落带范围的岩层中,即钻孔终孔与煤层顶板垂距为10~15m,前后钻场钻孔压茬为50m,可以确保顶板走向钻孔较高的利用率,并得到很好的抽采效果,满足采煤工作面的安全生产要求. 展开更多
关键词 高产高效工作面 裂隙发育 顶板走向钻孔 瓦斯抽采
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Is the Long-term Economic Decline of the Philippines Unstoppable? Trends, Reasons, Outlook
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作者 Peter Richter 《Journal of Sustainable Business and Economics》 2023年第4期1-19,共19页
The Philippines was in the 1960s a model of development in Asia and second to Japan,but occupies presently only the 11th position under South-East and East Asian countries in terms of GDP-per capita.The article explor... The Philippines was in the 1960s a model of development in Asia and second to Japan,but occupies presently only the 11th position under South-East and East Asian countries in terms of GDP-per capita.The article explores why this important Asian country with a long colonial past and enormous economic potential still ranks under lower-income countries and has in the last decades let pass by many other Asian countries.In answering this question,the approach of external triggers for accelerated development is being applied.In stark contrast to the success stories of the strongly outward-looking Asian countries like the four Tigers,later of Thailand and Vietnam the Philippines never developed a vision of an open economy connecting pro-actively to the world markets.Trade is hampered by a non-competitive and highly protected national economy.The existing FDI is more oriented to the profitable local markets.Foreign debts were never effectively used and international tourism was never well promoted.Linking these failures to the existing power structures in the country,it seems very much that the backward forces like the big landowners,the local producers and industrialists never wanted and continue not to want to open up the economy to international competition and governments are complacent with these groups.Various indicators demonstrate the long-term decline of the Philippines:Among them the slow growth of the GDP and the continuously high poverty rates.As the alliance of big business and policy holds firm no change in the failing nationalistic economic model can be detected leaving the bleak outlook that the economic decline will continue. 展开更多
关键词 External triggers of accelerated development strategies Promotion of exports Protection of local industries Foreign direct investments Foreign indebting International tourism Concentration of the national economy failures of the development model
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Good Governance and Growth in Emerging Countries:A Critical Review
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作者 Rachid Mira 《International Relations and Diplomacy》 2018年第4期231-238,共8页
Numbers of economists of development consider that good governance, defined as the quality management and orientation of development policies has a positive influence on economic performance. The question is what con... Numbers of economists of development consider that good governance, defined as the quality management and orientation of development policies has a positive influence on economic performance. The question is what content the literature gives to the concept of governance. According to the World Bank, good governance is evaluated by the implementation capacity of governance principles of a country, providing a framework for market development and economic growth. Empirical studies tested the relationship between good governance in the sense of “market-enhancing governance” (stimulus institutions market) and showed a positive relationship between good governance and economic growth. However, a good governance policy needs for developing countries to achieve minimum economic growth and political reforms in order to reach a level of development similar to that of industrialized countries. We focus on good governance definition made by the World Bank and criticism formulated by Mushtaq Khan, who reconstructed the notion of Governance Capabilities, taking into account the capacity of states to drive structural change in institutional, political, economic, and social fields, in order to ensure long-term economic growth. Our goal is to use a new concept of governance in order to build a new political economy approach more suitable for emerging countries. 展开更多
关键词 states failures good governance economic growth development policy
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战略环境评价中的战略缺陷分析
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作者 包存宽 尚金城 陆雍森 《安全与环境学报》 CAS CSCD 2001年第4期5-9,共5页
战略环境评价的目的是消除或降低因战略缺陷造成的环境影响 ,从战略决策源头控制环境问题的产生。战略缺陷将通过市场结构、企业行为的改变而产生环境影响 ,是导致环境问题的根源。战略缺陷分析是战略环境评价的重点内容 ,是制定战略环... 战略环境评价的目的是消除或降低因战略缺陷造成的环境影响 ,从战略决策源头控制环境问题的产生。战略缺陷将通过市场结构、企业行为的改变而产生环境影响 ,是导致环境问题的根源。战略缺陷分析是战略环境评价的重点内容 ,是制定战略环境影响控制、减缓措施或战略替代方案的主要依据。分析了战略缺陷的两种类型 :社会经济发展战略未充分考虑其环境影响以及环境与资源战略不符合社会经济实际。重点研究了导致战略缺陷产生的原因 ,即内部性、决策失误、低效率、权力分配不均及政府寻租行为。提出从战略内容失误、战略执行失真和战略组织失效 3个维度进行战略缺陷分析的方法。最后结合长春经济技术开发区战略进行实例研究 ,发现该战略缺陷表现在环境与社会经济发展战略不对称、投资导向政策考虑当地资源及国家有关政策不充分、产业布局规划与开发建设行动不一致以及土地利用优惠政策导致的效率偏低 4个方面 。 展开更多
关键词 战略环境评价 战略缺陷分析 长春经济技术开发区 SEA 战略缺陷 环境影响评价 EIA
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企业新产品开发失败原因分析 被引量:1
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作者 王娟 《中国科技财富》 2010年第10期270-271,共2页
新产品开发活动对企业发展存亡有着至关重要的作用,然而国内外新产品开发失败率居高不下。本文从理论上分析了影响企业新产品开发活动失败的原因。分析结果表明,导致企业新产品开发活动失败的原因主要包括企业家导向不足、资源分配不... 新产品开发活动对企业发展存亡有着至关重要的作用,然而国内外新产品开发失败率居高不下。本文从理论上分析了影响企业新产品开发活动失败的原因。分析结果表明,导致企业新产品开发活动失败的原因主要包括企业家导向不足、资源分配不合理、无效率的知识管理、不恰当的内部控制系统、对环境动荡的不适应性五个方面。 展开更多
关键词 新产品开发失败原因 企业家导向 知识管理 内部控制 环境动荡
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