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您的检索式：作者名="Matthew Boswell"
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| 1 | Roots of Tomorrow's Digital Divide:Documenting Computer Use and Internet Access in China's Elementary Schools Today显示文摘This paper explores China's digital divide,with a focus on differences in access to computers,learning software,and the Internet at school and at home among different groups of elementary school children in China.The digital divide is examined in four different dimensions:(i) between students in urban public schools and students in rural public schools;(ii) between students in rural public schools and students in private migrant schools;(iii) between migrant students in urban public schools and migrant students in private migrant schools;and(iv) between students in Han-dominated rural areas and students in areas inhabited by ethnic minorities.Using data from a set of large-scale surveys in schools in different parts of the country,we find a wide gap between computer and Internet access of students in rural areas and those in urban public schools.The gap widens further when comparing urban students to students from minority areas.The divide is also large between urban and rural schools when examining the quality of computer instruction and access to learning software.Migration does not appear to eliminate the digital divide,unless migrant families are able to enroll their children in urban public schools.The digital divide in elementary schools may have implications for future employment,education and income inequality in China. | Yihua Yang Xiao Hu Qinghe Qu Fang Lai Yaojiang Shi Matthew Boswell Scott Rozelle | 2013 | China & World Economy2013，21，3： | 2 |
| 2 | 墨西哥湾北部海底之下的天然气水合物显示文摘墨西哥湾北部长期以来都是水合物研究的重点区域。20世纪80至90年代,主要的研究集中在近海底与烃类渗漏有关的块状水合物上。然而,随着全球科技进步以及对天然气水合物钻探灾害与资源评估的工业诉求加快,研究的重点已经转移到海底之下埋藏的水合物的性质及丰度上。到2005年,墨西哥湾北部尽管已经有1200口工业油气井穿过了水合物稳定带,但是仍然缺乏海底之下水合物存在的证据。“墨西哥湾水合物联合工业计划”(JIP)在2005年的钻探首次证实了墨西哥湾海底之下存在水合物。另外,墨西哥湾Alaminos峡谷818地区2003年钻探的工业井数据在2006年得以公开发表,首次记录了存在于砂岩储层中的高饱和度水合物。2006-2008年,“联合工业计划”在综合利用地球物理及地质数据寻找含水合物砂层方面取得了很好的成绩,并在不同的深海环境中找到了四个站位、多个钻探目标。与此同时,由于“联合工业计划”的推进,美国海洋能源管理局(BOEM)对墨西哥湾的水合物油气系统进行了初步的评估,预计天然气地质储量达到607×10^12m^3,其中有三分之一的储量是以高饱和度的形式赋存在砂岩储层当中。2009年,“联合工业计划”在3个站位实施了7个钻孔的钻探,在其中的4个钻孔中发现了含高饱和度水合物的砂层,其它2个钻孔也发现低至中等饱和度的水合物。这个结果首次证实了墨西哥湾含水合物砂层的特征及性质是非常复杂的,同时证明了地球物理与地质学的综合应用在寻找钻探目标方面是非常有效的方法,也在一定程度上证实了美国海洋能源管理局在2008年的评估。 | Ray Boswell Timothy S. Collett Matthew Frye 匡增桂 | 2014 | 海洋地质2014，0，4： | 0 |
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