首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   224篇
  免费   7篇
  2023年   3篇
  2022年   1篇
  2021年   7篇
  2020年   9篇
  2019年   10篇
  2018年   10篇
  2017年   17篇
  2016年   8篇
  2015年   11篇
  2014年   10篇
  2013年   41篇
  2012年   17篇
  2011年   14篇
  2010年   9篇
  2009年   5篇
  2008年   6篇
  2007年   14篇
  2006年   8篇
  2005年   3篇
  2004年   4篇
  2003年   7篇
  2002年   6篇
  2001年   4篇
  2000年   2篇
  1999年   2篇
  1997年   1篇
  1993年   1篇
  1991年   1篇
排序方式: 共有231条查询结果,搜索用时 15 毫秒
71.
This study aims to analyse the determinants of successful school-to-work transition of young adults in Greater Jakarta. The study argues that the most consistent and significant influences on successful transition among young adults are micro predictors rather than mezzo predictors. Education has a strong positive relationship to successful school to work transition particularly in attaining stable job category. This study also found that traditional culture is likely to have negative influences on the successful transition of young women, while a positive transition is experienced by young men. Education is a key strategy in reducing the negative impacts of traditional cultural values and promoting successful school-to-work transition particularly if both young men and women are to attain stable employment.  相似文献   
72.
Industrial land is under transition globally. Insights into this transition are important to plan a sustainable future. Since industrial land follows parcel shapes and the transition process requires multi-year data to observe the impacts of such changes, multi-year vector data should be used to analyse industrial land transition. This paper presents a framework to analyse path-dependent regional industrial land transition processes using vector data. A step by step instruction is presented. In the analysis, the changed percentages of land use in the surroundings of appeared or disappeared industrial land are visualized. The visualized surrounding land use compositions give planners an idea on what causes land use transitions, the most frequent transition forms and their impacts on the surroundings, purely from a land use point of view to reduce data collection efforts. The North Brabant region in the Netherlands is used as a case study. The region is split into urban and non-urban areas to show the generic applicability of this framework.  相似文献   
73.
王雪微  范大龙 《人文地理》2020,35(6):85-94,148
基于复合指标视角,全面认识和提高城市发展质量,是推进长三角城市群实现高质量一体化发展的有效途径。论文从经济、社会、科教、设施、环境等5个维度出发构建城市发展质量评价指标体系,定量测度城市发展质量,分析2008—2018年城市发展质量时空演变格局。结果显示:①长三角城市群城市发展质量加速提升,但仍然存在差距,且各项城市发展质量呈现非均衡性;②上海市发展质量平均得分最高,三省一市平均得分差距不断缩小,表明长三角城市群城市发展质量具有显著的绝对收敛趋势;③城市发展质量平均中心经历了分散→集聚→分散的动态演化过程,其中经济发展质量平均中心位移最大,科教发展质量平均中心位移最小。移动轨迹大多呈现“先西后东、整体向西,先北后南、整体向北”,说明城市发展质量提升速度西部高于东部,北部高于南部。  相似文献   
74.
Current knowledge about the Mesolithic–Neolithic transition in the Central and Western Mediterranean European regions is deeply limited by the paucity of Late Mesolithic human osteological data and the presence of chronological gaps covering several centuries between the last foragers and the first archaeological evidence of farming peoples. In this work, we present new data to fill these gaps. We provide direct AMS radiocarbon dating and carbon (δ13C) and nitrogen (δ15N) stable isotope analysis were carried out on bone collagen samples of two single burials from the recently discovered open-air Late Mesolithic site of Casa Corona (Villena, Spain). The results shed new light on the chronology and subsistence patterns of the last Mesolithic communities in the Central Mediterranean region of the Iberian Peninsula. Radiocarbon results date the human remains and funerary activity of the site to 6059–5849 cal BC, statistically different from other Late Mesolithic sites and the earliest Neolithic contexts, and bridging the 500 yrs chronological gap of the Mesolithic–Neolithic transition from the area. Isotopic evidence shows that diet was based on terrestrial resources despite the proximity to the site of lagoon and marine ecosystems. This and previous isotope studies from the region suggest a lower reliance upon marine resources than for Atlantic and Cantabrian sites, although intra-regional patterns of neighbouring Mesolithic populations exhibit both fully terrestrial diets and diets with significant amounts of aquatic resources in them. We hypothesize that in the Central Mediterranean region of Spain the Late Mesolithic dietary adaptations imposed structural limits on demographic growth of the last foragers and favoured rapid assimilation by the earliest Neolithic populations.  相似文献   
75.
Ferrari, S.M., September 2012. The genera Cryptaulax and Procerithium (Procerithiidae, Caenogastropoda) in the Early Jurassic of Patagonia, Argentina. Alcheringa 36, 325–339. ISSN 0311-5518.

New species of Cryptaulax and Procerithium (Procerithiidae, Caenogastropoda) are reported from the Lower Jurassic (Pliensbachian–Toarcian) marine deposits of west-central Chubut province, Argentinean Patagonia. Three new species are described: Cryptaulax redelii, Procerithium (Rhabdocolpus) patagoniensis and Procerithium (Infacerithum) nodosum; and the diagnoses of Cryptaulax damboreneae Ferrari and Procerithium nulloi (Ferrari) are emended. The new fossils derive from the Mulanguiñeu and Osta Arena formations and expand the known diversity of the Procerithiidae, extending its palaeobioeographical distribution into the South American Jurassic.  相似文献   
76.
This paper incorporates an experimental approach to the study of violence patterns in Northeastern Patagonia (Argentina) during the late Holocene. The underlying hypothesis considers a close association between socio-ecologic alterations during the Medieval Climatic Anomaly (MCA) (ca. 1150-600 years BP; Stine, 1994, 2000) and a probable increase in conflict levels. In order to test this hypothesis, human skulls (n = 986) were analyzed for bone lesions, discriminating late bone lesions, such as those produced by metal tools. The experimental approach used swine (Sus scrofa domestica) skulls, as proxies for human skulls, and incorporated original sabers. From this discriminating analysis, it can be inferred that no significant increase in violence signs were recorded until the first stages of Hispanic-indigenous contact (first half of 17th century). These findings emphasize the need for a revision of the implications of the dynamics of human populations in Northeastern Patagonia during the late Holocene.  相似文献   
77.
If the overall expansion of the farming system was determined by the Neolithic Demographic Transition (NDT), i.e. by demographic pressure, what determined the rate of expansion? What is the link between the rate of expansion, the farming system and demographic density? In a first approach, the issue of the different rates of expansion of the farming system on the map is addressed in terms of 21 geo-ecological, climatic and cultural factors and forager populations, via an ordinary least square regression technique (OLS). In a second approach, the variability of the rate of expansion is analyzed in terms of specific patterns identified for the ceramic culture areas, via a cluster analysis. The expansion rate is negatively correlated with the intensification of the agricultural system, as well as with demographic density. Expansion is slow in ecosystems with an intensive farming system with relatively high demographic density, and vice-versa.  相似文献   
78.
Successful North Americans, Douglas and Kristine Tompkins, have used their personal wealth and business know‐how to become among the most powerful expatriate land owners in Chile and Argentina. In Chilean Patagonia's Aysén region, Kristine Tompkins' conservation foundation purchased the historical Chacabuco Valley Station, seeking to reverse the impacts of pastoralism and create a national park. Whilst in the United States and Europe the Tompkins' efforts have been applauded, many residents of the Chacabuco Valley area are concerned by the idea of outsiders holding decision making power on land use. The situation in Aysén speaks to a complex of broader anthropological debate regarding the neoliberalisation of conservation and, in particular, the role of ecophilanthropy in promoting capitalism. By examining the ways in which the Chacabuco Valley is undergoing transformation, this paper explores the relationship between ecophilanthropy, capitalism, and conservation. Of particular interest is how images are produced and then transformed into commodities as the strategies of business are incorporated into conservation policy and practice.  相似文献   
79.
Two economic geographers examine the impacts of economic transition on the efficiency of energy use in China, the second-largest energy consumer in the world. Following a brief review of reform and deregulation in China's energy sector, they proceed to systematically test the relationship between economic transition (conceptualized as a triple process of marketization, decentralization, and globalization) and energy intensity using a panel data set. The statistical units of analysis are China's 30 provincial-level administrative regions, facilitating the investigation of spatial variations in energy intensity. Journal of Economic Literature, Classification Numbers: O53, P20, Q40, Q43. 9 figures, 5 tables, 62 references.  相似文献   
80.
An American geographer evaluates the process of water resources planning and management in the city of St. Petersburg, Russia, based on regional government documents, interviews with local water management officials, and follow-up field observations in 2007. St. Petersburg is a microcosm for challenges to assessing and managing water resources in urban environments in transition economies more broadly, and thus the present study yields insights into obstacles confronting water planners in many large cities in the post-Soviet realm, and augments the body of empirical data on the impacts of economic transition on environmental management. 3 figures, 46 references.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号