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Insbesondere in Zeiten knapper ?ffentlicher Finanzen haben Politik, Wirtschaft und Privathaushalte ein Interesse daran zu erfahren, ob die in zahlreichen F?rderprogrammen gebundenen Steuermittel effektiv, zielgenau und erfolgreich eingesetzt werden. über die Erfolgskontrolle von staatlichen Interventionsprogrammen hinaus werden zunehmend auch Institutionen, Instrumente und Beurteilungskriterien auf ihre Wirkung hin untersucht. Daher hat in jüngster Zeit nicht nur in den technischen Disziplinen, sondern auch in den planungsbezogenen und sozialwissenschaftlichen Fachrichtungen verst?rkt die Diskussion um Evaluierungen, ihre wissenschaftliche Genauigkeit, gesellschaftliche Akzeptanz sowie politische Brisanz eingesetzt. Verb?nde und Einrichtungen versuchen, die wissenschaftlichen und ethischen Standards für die Evaluation zu verbessern und neue angepa?te Evaluationsrichtlinien zu entwickeln. Um so erstaunlicher ist es, da? bis heute kaum ein wirklicher Durchbruch einer ausgepr?gten Evaluationskultur in Deutschland zu erkennen ist. So gilt es zu fragen, welche Erfahrungen es in Deutschland diesbezüglich gibt, welche St?rken und Schw?chen sich in der Vergangenheit erkennen lie?en und welche Methoden angesichts ver?nderter Rahmenbedingungen bei welchen Problemstellungen geeignet sind. Schlie?lich empfiehlt es sich, auf die Erfahrungen anderer L?nder zu blicken, um zu lernen, wie wir eine neue Evaluationskultur entwickeln k?nnen. Die Begriffe Evaluation und Evaluierung werden in diesem Text synonym verwendet, wie es auch sonst üblich ist.  相似文献   
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Over the last decade, a long-running archaeological project in the Guadalquivir Basin (Spain) has identified the emergence (c. 3000 BC) and collapse (between c. 2500 and c. 2300 BC) of a regional inter-settlement hierarchical system centred on the south-western Pyrite Belt and the Lower Guadalquivir Basin.  相似文献   
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Land fragmentation can be an important drawback for the development of rural areas. Due to the small size of the units, land management and planning are difficult from both the private and the public point of view. In some regions of Europe, land fragmentation can lead to the collapse of land-based activities such as agriculture and forestry. This process triggers land abandonment, which causes social, economic and environmental problems. Traditional interventions such as land consolidation have not worked because of the scale of land fragmentation, which leads to huge transaction costs. New planning instruments and governance structures for land management that balance the relations between property rights, management and labour force can be developed, in order to avoid the problems of land fragmentation. In this paper, we present two innovative examples of land management and governance structures for dealing with land fragmentation in rural areas of Galicia northwestern Spain. They were able to combine the use of individual and common property rights to make land use more sustainable, instead of trying to change land ownership. The new governance structures helped to increase efficiency and sustainability of the land use by, for example, increasing labour productivity, clarifying property rights and diminishing land abandonment.  相似文献   
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The comparative study of sedimentary fabrics in relation to archaeological fabrics in various levels of the sites of Cova Gran de Santa Linya (Middle and Early Upper Palaeolithic) and the Roca dels Bous (Middle Palaeolithic) has made it possible to analyse the formation dynamics of the deposits and determine the extent of disturbance of the archaeological levels by natural processes. To achieve this, diagrams and two- and three-dimensional indices were calculated from the azimuth and dip angle of natural clasts and artefacts. The results indicate that the sedimentary levels were formed mainly by planar fabric shape gravitational processes (low depositional angles), which differ notably from the archaeological fabrics they contain, characterised by a greater degree of isotropy. This difference in the fabrics would reflect human activity and indicates that the archaeological levels both in Cova Gran and Roca dels Bous have not been subject to significant natural modifications, and are preserved in situ.  相似文献   
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This study introduces a new measure of urban centrality. The proposed urban centrality index (UCI) constitutes an extension to the spatial separation index. Urban structure should be more accurately analyzed when considering a centrality scale (varying from extreme monocentricity to extreme polycentricity) than when considering a binary variable (monocentric or polycentric). The proposed index controls for differences in size and shape of the geographic areas for which data are available, and can be calculated using different variables such as employment and population densities, or trip generation rates. The properties of the index are illustrated with simulated artificial data sets and are compared with other similar measures proposed in the existing literature. The index is then applied to the urban structure of four metropolitan areas: Pittsburgh and Los Angeles in the United States; São Paulo, Brazil; and Paris, France. The index is compared with other traditional spatial agglomeration measures, such as global and local Moran's I, and density gradient estimations. El presente estudio introduce una nueva medida de centralidad. El índice de centralidad urbana propuesto (UCI, por sus siglas en inglés) es una extensión al índice de separación espacial (spatial separation index)(Midelfart‐Knarvik et al. 2000). El análisis de la estructura urbana resulta más preciso al usar el índice cuando se toma en cuenta una escala de continua de centralidad (que puede variar de un monocentrismo extremo a un policentrismo extremo) que cuando se considera una variable binaria (monocéntrica o policéntrica). El índex propuesto controla las diferencias de tamaño y forma de las áreas geográficas de las que se tienen datos, y puede ser calculada utilizando diferentes variables, como empleo y densidad poblacional, o tasas de generación de viajes. Las propiedades del índice se ilustran con conjuntos de datos artificiales simulados, y se comparan con otras mediciones similares en la literatura ya existente. Posteriormente, el índice es aplicado a la estructura urbana de cuatro áreas metropolitanas: Pittsburgh y Los Ángeles, en EEUU; San Pablo, en Brasil; y París, Francia. Finalmente, se compara el índice con otras mediciones tradicionales de aglomeración espacial, como el índice de Moran local y global, y estimaciones de gradiente de densidad. 本文介绍了一种度量城市中心性的新方法,提出的城市中心性指数(UCI)是对空间分离指数的扩展。当涉及到中心性规模(从极单中心到极多中心),不仅仅是二元变量(单中心或多中心),城市结构则需更加精确的测度。本文构建的指数可以通过数据可获取的不同大小和形状的地理单元控制,并通过不同变量(如就业与人口密度或者旅次产生率)测算得到。该指数的属性可以通过人工数据集的模拟示例说明,或者通过对比已有文献对相似指数的阐述加以说明。然后,通过将该指数应用于全球四个大都市区(美国匹兹堡和洛杉矶、巴西圣保罗和法国巴黎)的城市结构中进行检验。最后,将该指数与其他测度传统空间集聚指数如全局和局部Moran指数及密度梯度估计进行对比.  相似文献   
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In the 16th and 17th centuries, medical knowledge was anthropological in so much as it produced a discourse on man whose ambition and legitimacy needed no justification. Underwritten by the belief that the body was an object of science, the epistemic horizons of a doctrina de homine emerged from the interaction of medical practice, particularly anatomy, with philosophy and theology in a specific framework - the reorganization of knowledge in Europe over the “long 16th century”.  相似文献   
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