Studies on Green and Low-carbon Development Path of China’s Commercial sector

随着资源耗竭和环境气候恶化，国际上对通过节能减排实现绿色可持续发展的关注度越来越高。长期以来，中国的能源和环境治理主要集中在高污染高能耗行业，对其他行业关注较少。但是，随着中国经济进一步发展转型，经济重心将从高污染高能耗行业向其他行业转移。这就要求我们在研究能源和环境问题时，要从全行业的角度展开研究。 商业部门代表消费为主导的经济模式，在中国逐步迈入中高等收入国家行列的进程中，将伴随人民生活水平的不断提高，持续加速发展，是中国经济未来的核心部门，发展潜力巨大。本文以商业部门为研究切入点，研究该行业在发展中的能源消费和二氧化碳排放，既填补了国内相关研究的空白，又对中国未来绿色发展战略提供参考。...The global energy and environmental governance has made a substantial breakthrough, and entered a new stage. However, in the traditional theoretical and policy research fields, the researches on energy and environmental problems are mainly focused on the high pollution and high energy intensity industries. With the advent of a new round of climate change convention, there are many things that we n...学位：经济学博士院系专业：能源学院_能源经济学学号：3242013015402

甲醇转化制氢工艺的比较

在甲醇转化制氢作质子交换膜燃料电池源的自供热体系中，基于过程中物料平衡、能量平衡和反应平衡，从热力学角度对甲醇转化制氢的两种工艺，即甲醇氧化转化工艺和外热式水蒸汽转化工艺进行了比较，研究了结果表明，甲醇氧化转化制氢工艺比外热式水蒸汽转化制氢工艺制氢能量效率高８％以上，ＣＯ排放量也低

Evaluation and use of DEMs derived from ASTER imagery

ASTER sensor acquires along track stereoscopic images in near-infrared, with a spatial resolution of 15 m. These images can be used for the automatic generation of Digital Elevation Models (DEMs) by well-established image-matching algorithms. These DEMs are useful for a variety of applications, providing very interesting and inexpensive products mainly for areas showing lack of mapping coverage. In the paper examples of DEM generation from ASTER imagery are illustrated, and the results obtained discussed in terms of accuracy assessment, in comparison with external reference data, and of generation of derived products