排序方式: 共有85条查询结果,搜索用时 15 毫秒
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基于遥感数据的中亚五国城市时空扩展变化研究 总被引:1,自引:0,他引:1
借助遥感与GIS技术,以1990年LandsatTM和2000年Landsat ETM+遥感影像为数据来源,提取中亚5国首都城市建设用地信息。计算1990年和2000年中亚5国首都城市的城市扩展强度、城市年扩展速率及城市形状紧凑度,对中亚地区五国城市扩展的时空变化进行定量分析。结果表明:1990年和2000年,中亚5国首都城市扩展强度指数和城市扩展速度差距较大,其中阿什哈巴德的扩展强度指数和城市扩展速度最大,分别为0.93、4.6,而最小的是杜尚别,分别只有0.001、2.6,二者相差悬殊。而紧凑度变化幅度不大,2000年,杜尚别、塔什干的紧凑度较大,分别为0.6、0.46,其城市结构更为紧凑,用地集约程度增大,而阿斯塔纳、比什凯克和阿什哈巴德城市结构相对较为松散。同时,中亚五国首都城市空间向外扩张、向内填充的强度、方向各不相同,从而呈现出各自的扩展特点。 相似文献
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《Journal of Geography in Higher Education》2012,36(4):561-580
This article discusses the results when integrating digital versatile disc (DVD) technology in full-time second-year geography for BEd degree students at a university in South Africa, a developing country. It proposes a framework for the integration of the DVD in geography teaching and learning, steered by students’ needs, feedback and observations by the lecturer. The proposed framework recommends clear guidelines on how to integrate the DVD, as well as the interactions between the role players/resources. It also explains how the DVD was compiled, what was included and how it was effectively applied in conjunction with seminars, as an alternative to traditional lectures. An action research design was utilized and both qualitative and quantitative data were collected. 相似文献
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缓解发达地区省内区域经济差距的区域政策研究——以广东省为例 总被引:1,自引:1,他引:1
本文首先报告了作者对1990!2004年广东省区域经济差距的变动趋势和影响因素的前期研究,发现广东省内总体区域差距基本呈明显上升趋势,其中,三大地带间差距和珠江三角洲内部差距、第二产业差距和第三产业差距对全省总体差距的影响最大。文章继而详细论述了在市场经济条件下缓解广东省内日益扩大的区域差距的基本思路。在此基础上,本文给出了缩小广东省区域经济差距的区域政策建议。 相似文献
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中德经济发达地区城乡一体化模式比较——以长江三角洲与莱茵河下游地区为例 总被引:8,自引:0,他引:8
城乡一体化是伴随着工业社会、城市化时代的一种特有的社会经济现象,是人类社会生产力高度发达的一个重要标志,尤其在经济发达地区这种现象更加明显。中德两国有着不同的城市化发展过程和不同的时代背景,在工业化与经济发达区域内,城市化道路及其带来的城乡一体化类型、特征、模式与前景是有一定差异的。本文着重探索中国的长江三角洲与德国的莱茵-鲁尔地区的城乡一体化模式,从不同的视角、层面进行比较研究,试图从两国不同的地区比较得到有益的启示。 相似文献
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近百年来西方港口地理学研究回顾与展望 总被引:3,自引:0,他引:3
查询13种外文数据库和76种外文期刊,依据文献的引用次数和可得性,遴选了1914至2010年间的521篇国外港口地理文献,通过梳理近百年的相关文献发现,效率评估、空间竞争、体系演化、港城互动、组织管理等构成了港口地理学研究的主要内容。在此基础上文章采用文献分析法,重点剖析了国外港口地理研究在研究成果、学者合作、研究区域和研究主题等方面的特点和新倾向。文章最后指出,随着全球化的不断深入和港口环境的深度变化,海向腹地、港口价值链、物流资源整合等新的领域将成为国外港口地理研究的新近趋向和前沿领域。 相似文献
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Merja Heikkinen 《International Journal of Cultural Policy》2013,19(3):325-340
This article considers the role of public arts policy in producing societal definitions for “art” and “artists”. It examines administrative definitions generated and used by the Nordic system of state support for artists and reflected in its administrative categories and structures of decision‐making. Using the concepts of “artistic field” and “artistic classification system” as starting points, the article focuses on the regulated and institutionalized interaction of the state and artistic fields in decision making, and on the administrative categories emerging from this interaction. Through this interaction, professional and administrative definitions of “art” and “artist” are closely intertwined in the four countries discussed. The administrative categories examined show considerable variation between the countries related to differences in the nature of this interaction. The definition power involved in state support for artists is related to the nature of this interaction, as well as to such factors as the legitimating arguments, objectives and criteria for the support. 相似文献
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Nils Edling 《European Review of History》2008,15(1):23-40
Statistical knowledge, insurance and labour exchanges constituted the principal elements in the policies developed to handle the new social problem of unemployment in the decades before 1914. Political transfer, the exchange of ideas, problems and policies between reformers all over the modern world, contributed heavily to the making of unemployment. This article analyses the introduction of labour exchanges, a German innovation, in the Nordic countries. Special attention is given to the different settings, both extra- and intra-Nordic, for transfer and cross-learning. The aspiration that the municipal labour exchange, providing a free and impartial service to both employers and workers, would reduce unemployment and social tensions explains its swift introduction. 相似文献
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