天津市中心城区地下空间资源开发利用适宜性评价探讨

探讨了天津市中心城区的地下空间资源开发利用评价,提出了地下空间资源开发利用评价方法。分析了天津市中心城区的地质背景,论证选取了适宜的评价因子,结合目前中心城区地下空间的开发利用现状,对中心城区地下空间资源的开发利用进行了适宜性分区评价,为将来天津市中心城区地下空间资源的合理开发利用提出了建议。     

The social relations of catfish production in Vietnam

The growth of intensive export-oriented Pangasius catfish production in Vietnam’s Mekong Delta is unparalleled in terms of rapidity and scale by any other agricultural sector, with production climbing from a low base to more than 1 million tons in a single decade. This paper examines the effects of this remarkable change on the rural class structure in locations where catfish farming has boomed, and analyses the role of local state-society relations in mediating outcomes resulting from the integration of local actors into the global value chain. We conclude that private economic activity is deeply embedded in informal relations with the state bureaucracy in Vietnam, with the result that the expansion of catfish aquaculture has generally acted to reproduce and entrench existing class relations rather leading to a radical reconfiguration of the rural class structure.     

长江三峡工程库区生态环境遥感动态监测

长江三峡工程库区人类活动频繁,生态系统脆弱,三峡工程对库区生态环境的影响一直是人们关注的焦点。运用遥感、地理 信息系统、全球卫星定位系统、计算机网络技术,采用DEM 、影像正射校正、多源影像数据融合、多层次信息提取等技术方法,对整 个库区20世纪80年代中期、90年代末期生态环境、草地资源进行了全面的动态监测,并在此基础上利用ArcGIS软件开发完成了“长江 三峡工程库区生态环境遥感动态监测GIS系统”。     

Interviewing landed elites in post-war Guatemala

This essay explores the methodological challenges of conducting ethnographic research among economic and managerial elites in Guatemala’s landed sector during the country’s post-war transition. Guatemala’s 34-year civil war ended with peace accords in 1996. From the mid 1990s through 2001, I conducted interviews with leading representatives of the private sector in Guatemala, including the owners and top managers of the country’s sugar plantations. The Guatemalan sugar elite describes itself as the new face of the private sector in Central America, implementing “corporate social responsibility” programs linked to the World Bank and other international agencies. Questions of access and interview dynamics are often discussed in relation to qualitative research on “elites.” Yet, I found the interview process to be less complicated than I anticipated. Of greater concern were the problems of research dissemination and praxis. The experience discussed here raises questions about whether research on particular elite groups can be sustained over long periods of time.     

贵州省赫章县核桃农业园区富硒土地特征及开发建议

针对单一角度采集的图像检测样本存在的高误检率、错误率等问题,文章提出一种特殊的打光方案及相机安装方案,实现对胶囊360°全方位的缺陷检测,利用彩色相机填补了胶囊异色点、黑点,印字、小切口以及混批等缺陷不能检测的空白。在胶囊有序传送的前提下,提出“隔组间排”原理,以更多时间和空间使电磁铁伸缩杆完成踢废动作,平衡“传送效率”“检测效率”“踢废效率”三者之间的矛盾,提高设备的处理能力,实现胶囊的缺陷检测。     

Education for development, CD for Peace: Producing the “globally competitive” child

This paper is set against the backdrop of an increasingly pervasive discursive coupling of peace with development, and of extremism with underdevelopment. An evolving knowledge economy discourse casts education as both a key determinant of economic development, and as a crucial tool in the battle for “hearts and minds” in a global war against terrorism and extremism. Education for development, and education as anti-extremism are the twin goals of the Filipino CD for Peace - a contribution to the UN-backed International Power Users of ICT (Information Communication Technology) Symposium. In this paper, I examine the ways in which this youth Symposium feeds into and mobilizes powerful logics around the links between education and development/counterterrorism. My argument is that education for development, and one of its articulations, the CD for Peace, are undergirded by and reproduce neoliberal development logics in several overlapping respects. I illustrate the ways in which the language of connection and collaboration reproduces a distinct rationality related both to the transformative potential of (private investment in) ICT and to the production of particular kinds of subjectivities: youth as connected, informed, economically valuable global citizens beyond the reach of extremists. The Power Users project works to (re)construct teenagers as “gurus”; conflict (and poverty, and terrorism) becomes solvable through education and ICT. I show how knowledge economy discourse powerfully constructs youth as learning subjects who come to imagine their own roles and identities in specifically neoliberal ways: not only as learners, but also as advocates for this nexus of technology, education, development and peace.     

张掖黑河湿地发展碳汇的优势与对策

根据国内碳汇发展现状,分析了张掖黑河湿地发展碳汇的优势与劣势,提出了发展湿地碳汇的对策。     

Accounting methods for carbon credits: impacts on the minimum area of forestry projects under the Clean Development Mechanism

Abstract

The Ninth Conference of the Parties (COP-9) decided to adopt an accounting system based on expiring carbon credits to address the problem of non-permanent carbon storage in forests established under the Clean Development Mechanism (CDM). This article reviews and discusses carbon accounting methods that were under consideration before COP-9 and presents a model which calculates the minimum area that forest plantation projects should reach to be able to compensate CDM transaction costs with the revenues from carbon credits. The model compares different accounting methods under various sets of parameters on project management, transaction costs, and carbon prices. Model results show that under current carbon price and average transaction costs, projects with an area of less than 500 ha are excluded from the CDM, whatever accounting method is used. Temporary crediting appears to be the most favorable approach to account for non-permanent carbon removal in forests and also for the feasibility of smaller projects. However, lower prices for credits with finite lifetimes may prevent the establishment of CDM forestry projects. Also, plantation projects with low risk of unexpected carbon loss and sufficient capacity for insuring or buffering the risk of carbon re-emission would benefit from equivalence-adjusted average carbon storage accounting rather than from temporary crediting.     

滇中引水工程昆明段岩溶水发育规律及对隧洞工程的影响

可溶岩区地下岩溶水对隧洞造成很大的威胁,如引起隧洞涌水、突水、突泥等。本文通过地质调查、勘探、抽水试验,分析滇中引水工程昆明段地下岩溶水发育规律及分布特征,为滇中引水工程以及今后地下隧洞工程设计和施工提供依据。调查分析显示,滇中引水工程昆明段岩溶在二叠系、石炭系、泥盆系可溶岩中均有分布,主要呈带状分布于地下水排泄基准面附近及断陷盆地、断裂沟谷内,其次在新构造运动控制的断裂地段及岩性变化造成的不同微水文地质单元交界处;在二叠系灰岩中,地下水分层排泄,石炭系、泥盆系中发育有落水洞,形成地下岩溶通道;在1900～2150m高程段岩溶发育密集,该高程区为岩溶地下水的主要径流区,对隧洞影响最大,存在涌水、突水、突泥、岩溶塌陷、遭遇岩溶空腔的隐患。     

县市级政府决策信息系统的开发应用:专业GIS软件SK set V4.0功能介绍——以贵州沿河土家族自治县资源遥感信息系统为例

SK set V4.0是中国地质科学院岩溶地质研究所GIS中心2001年4月开发成功的、具有自主版权的专业GIS平台软件.它集成了现今较为先进的组件、控件重用,面向对象编程等技术,并以美国Inprise公司的Borland C Builder编译软件为开发平台,提供了全中文菜单环境,不仅具有基本信息和多图层查询、相关分析动态监测、多因子分析、图斑编辑、自动演示、系统维护等功能,而且还具有快速响应的工具条、友好的对话框和较强的纠错机制,很适合于缺乏专业GIS人才的县市级政府管理部门使用.文中还以贵州省沿河县资源遥感信息系统为例,对SK set V4.0的功能和使用方法进行了具体的介绍.