Organizational Dynamics of the U.S. Logistics Industry: An Economic Geography Perspective*     

Yuko Aoyama  Samuel Ratick  Guido Schwarz 《The Professional geographer》2006,58(3):327-340

Although the logistics industry provides critical services to all sectors of the economy, few studies exist in economic geography that examine and explain the organizational dynamics of this industry. This article highlights the significance of the logistics industry in contemporary industrialization and argues that an enriched understanding of the interaction between technology and space can be achieved by examining the evolution of an industry that plays a central role in the contemporary economy. We focus on dimensions that are identified as particularly important: organizational, geographic, and risk and security.  相似文献   

遥感技术在煤炭地质中的应用现状及前景   总被引：6，自引：0，他引：6  

张文若  康高峰王永 《中国煤田地质》2006,18(2):5-8,59

介绍了遥感技术在煤炭资源调查和评价、煤矿区地质灾害调查和评估、生态环境及污染调查评价和监测以及煤矿三维可视化仿真规划系统建设方面的应用研究现状及所取得的主要成果，并结合遥感技术的发展方向，展望了其在煤炭地质中的应用前景。  相似文献   

基于GIS的供电台区经营综合评价     

王玲  边馥苓 《测绘信息与工程》2005,30(6):32-33

探讨了运用GIS技术对供电台区经营综合评价的实现方法,选取了业务属性和空间属性两个方面评价因子,介绍了从系统软硬件、评价实现过程及显示结果等方面评价过程的具体技术实现。  相似文献   

VLBI资料处理软件系统OCCAM V6.0简介     

张捍卫  胡晓民  王爱生 《测绘与空间地理信息》2005,28(3):47-50

OCCAM V6．0是在PC机上开发的一套VLBI大地测量数据处理软件。该软件用标准FORTRAN77(90)语言编写，可在Windows95以上版本和LINUX环境下的PC机上运行，其主要特点是操作简便、兼容性好、处理容量大、速度快和结果输出多样化等。随着该软件的不断改进和发展，利用OCCAM进行VLBI数据分析的学者逐渐增多，OCCAM软件的使用也日益广泛。本文简要介绍了OCCAM软件的安装、各个模块的主要功能和在运行中的注意事项，供今后OCCAM用户在使用过程中参考。  相似文献   

测井资料在碳酸盐岩储层评价中的应用   总被引：4，自引：0，他引：4  

魏历灵  农社卿  胡国山 《新疆地质》2005,23(1):73-78

以塔河油田碳酸盐岩储集层基本特征为依据，利用常规和能谱测井资料信息比值法和重叠法等技术．致力于储集层缝、孔、洞测井响应特征敏感性评价研究，从中提取8项储层敏感性参数，并对其进行综合评判，确定出划分储层类别的标准，经过50口井的测试资料验证，采用多参数综合评判来划分储层类别是可行的，对储层的评价效果较好，使常规测井资料得到了更深入、广泛的应用。  相似文献   

生物膜处理技术的研究进展   总被引：3，自引：0，他引：3  

吴会中  单欣  赵琛琛 《中国勘察设计》2005,(11):52-54

本文综述了生物膜技术的发展概况及其传质理论,并且对各种类型生物膜反应器的应用和发展作了简要论述,最后提出了生物膜技术的发展方向。  相似文献   

沁水盆地煤层气钻井工艺方法   总被引：1，自引：1，他引：1  

李云峰 《中国煤田地质》2005,17(6):52-53,70

针对沁水盆地煤层气概况,地层情况及开采条件,介绍了参数井、生产井、多分支地面煤层气水平开发井、丛式井等钻井工艺、钻具组合、井身结构及井身质量要求.  相似文献   

黄土坡面侵蚀产沙时空演变的REE示踪技术研究   总被引：2，自引：0，他引：2       下载免费PDF全文

薛亚洲  刘普灵  杨明义  琚彤军 《水科学进展》2005,16(2):174-180

室内交叉布设不同的稀土氧化物,通过人工模拟次降雨,在同一试验条件下,对坡面侵蚀沿顺坡方向和深度方向的演变过程同时展开研究。结果表明:REE示踪技术对定量研究土壤侵蚀具有较高的精度;降雨前期,片蚀与细沟侵蚀发育程度基本相当;后期细沟侵蚀占据坡面侵蚀的主导地位,其侵蚀平均加速度和平均侵蚀率分别是片蚀的15倍、9倍;试验结束,细沟侵蚀占据坡面总侵蚀的90%;本试验条件下,坡面下1/3区域为侵蚀活跃带。  相似文献   

公路边坡工程监测技术评价与分析   总被引：1，自引：0，他引：1  

梁世华 《安徽地质》2002,12(4):245-247,251

结合公路工程、建筑工程等土木工程建设中经常涉及到的边坡工程,评价与分析边坡工程监测的作用、内容和方法,提出了边坡工程应该在工程项目开展的开始阶段就应进行和边坡工程监测的项目,选择原则,测点布置原则、监测周期等,对边坡工程建设具有重要的意义.  相似文献   

Analyzing CO2 emissions mitigation by technology improvement in Central and Eastern Europe     

Diana Ürge-Vorsatz  Adam Szeszler 《GeoJournal》2002,57(3):211-226

As a legacy of the centrally planned economy, the economies in transition of Central and Eastern Europe (CEE) have a unique potential to reduce their greenhouse gas emissions through the improvement in their high energy intensities. Since much of this `low-hanging fruit' in energy-efficiency improvements can be highly cost-effective, many developed countries facing difficulties in meeting their greenhouse gas (GHG) emission targets domestically are eager to find such opportunities in the CEE region. Therefore, studies analysing the potentials and costs of carbon dioxide reduction through technology improvement in the region have come into the limelight. While there are a few excellent studies in the region aimed at analysing climate change abatement potentials, they all embark on different assumptions, methodologies and boundary conditions. It is hence difficult, if not impossible, to compare and analyse the results of these studies across different authors, countries or time horizons. Consequently, the purpose of this paper is to place four leading studies on GHG mitigation through technology improvement from the CEE region into an internationally comparable framework. Four studies were selected from three countries, Poland, Hungary and Estonia, which are all the results of major national and international efforts to assess costs and potentials of GHG reduction. The paper places their assumptions, methods and final results into a framework which enables policy-makers and project designers to compare these across geographical and technological boundaries. Since other studies from around the globe have been analysed in this framework in the literature, this paper provides a vehicle for the findings of these four studies to be compared to others worldwide. In addition, the paper highlights a few areas where similar studies to be completed in the future in the region may be enhanced by incorporating features used in GHG mitigation research in other parts of the world. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献