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   859篇
  免费   49篇
  908篇
  2023年   10篇
  2022年   14篇
  2021年   14篇
  2020年   38篇
  2019年   39篇
  2018年   56篇
  2017年   54篇
  2016年   52篇
  2015年   26篇
  2014年   35篇
  2013年   131篇
  2012年   34篇
  2011年   44篇
  2010年   33篇
  2009年   42篇
  2008年   36篇
  2007年   48篇
  2006年   26篇
  2005年   36篇
  2004年   24篇
  2003年   26篇
  2002年   18篇
  2001年   13篇
  2000年   14篇
  1999年   7篇
  1998年   9篇
  1997年   11篇
  1996年   3篇
  1995年   5篇
  1994年   2篇
  1993年   3篇
  1992年   2篇
  1991年   1篇
  1982年   1篇
  1980年   1篇
排序方式: 共有908条查询结果,搜索用时 0 毫秒
71.
Much practically orientated environmental research is marked by a polarity between functionalist abstraction and ahistorical normative discourse. This paper seeks to bridge the divide between theoretical and empirical research through a case study of New York City's water supply. Current processes of socio-economic restructuring are leading to negative environmental consequences obscured by a failure to extend analysis beyond limited temporal, spatial or sectoral scales. Insights from regulationist theory show that a combination of fiscal, political and other developments are bringing about a wide-ranging reformulation of existing patterns of environmental regulation and service provision in the city. The power of the state is being radically diminished in relation to the power of capital and a plethora of different interest groups. A relatively simple centralized model of environmental regulation is being transformed into a complex decentralized pattern involving the emergence of new approaches to urban governance. Further research is needed on the contradictions between capitalist accumulation and environmental regulation at different spatial scales in order to link New York's changing role within the global economy to the declining political legitimacy and fiscal capability of the state to play an extensive role in environmental management.  相似文献   
72.
熊伟  胡洋 《旅游科学》2012,26(2):67-76,94
旅游资源从根本上看具有公益性特点,与“非营利”理念高度契合,两者相互结合的研究具有现实的必然性和理论的可行性。本文采用扎根理论的研究范式分析了旅游者对旅游“非营利”理念的感知,主要结论有:(1)旅游者普遍认为旅游“非营利”理念目前在我国几乎不存在,但却是大势所趋;(2)旅游者对旅游“非营利”理念的期望发展方向在宏观上表现为政府法规监管等9大方面;(3)旅游者对旅游“非营利”理念的期望发展方向在微观上表现为21个小范畴,且在健全监督机制、税收优惠等方面的期望较为集中。(4)旅游者对于如何从自身做起践行“非营利”理念的认知程度很低,国人的旅游“非营利”理念亟待培养。  相似文献   
73.
The article looks at the role of Italy in the decision‐making arena of the EU Common Foreign and Security Policy (CFSP), analysing the initiatives it put in place to address and influence the construction of a common defence. The article aims to explain the ability or inability of Italy to build up a consensus around its proposals. By studying two initiatives in the field of European defence and security, it seeks to determine the factors which resulted in the differing outcomes of Italian actions at the European level.  相似文献   
74.
Heritage studies is yet to have a debate about its theorisation at the global level. Many of the core ideas that shape the field are rooted in the contexts of Europe and the USA and geographically rolled out in normative ways. This paper argues it is important we embark on pluralising how heritage is studied and theoretically framed, in ways that better address the heterogeneous nature of heritage, for both the West and the non-West. The themes of modernity, cities and international cultural policy provide evidence of why we need to better position the academic study of heritage in relation to the rapid geo-political and geo-cultural shifts now taking place.  相似文献   
75.
人地系统演化及人地关系理论进展初探——一个案例研究   总被引:1,自引:0,他引:1  
香宝 《人文地理》1999,14(Z1):68-71
文章通过对人地关系系统演化进行分析,总结出人口、资源、环境与发展是目前人地关系系统的核心内容,并得出可持续发展论是到目前为止人地关系论发展的最高形式的结论。最后以可持续发展理论为指导,对呼和浩特市人口与经济系统的持续发展进行了初步探讨。  相似文献   
76.
贾绍凤 《人文地理》1999,14(1):37-41
国际关系的发展趋势将以经济为主题、以和平合作为主调。相应的地缘关系理论也应作如下调整:从"争夺霸权"向"寻求合作"的目标转换、从地缘政治向地缘经济的主题转换、从地理位置向科技人才的解释因子转换、从欧洲中心论向全球一体化的空间转换。  相似文献   
77.
关于中共党史学理论的若干问题   总被引:7,自引:0,他引:7  
关于中共党史学理论和方法的研究一直比较薄弱,而且其中若干问题尚存有争议。关于中共党史学的理论方法论体系、学科性质与特点、学科的研究对象与研究内容、党史的体系与历史分期等问题,有进一步探讨、研究和厘清的必要。  相似文献   
78.
Nuts of limber pine (Pinus flexilis) from Early Holocene strata in Danger Cave, Utah, are distinguishable by seed-coat sculpturing from pine nuts of single-needled pinyon (Pinus monophylla), which occur in strata dating <7000 years . Owls and other taphonomic agents may deposit pine nuts in archaeological sites, but the morphology of the pine nuts in Danger Cave strongly indicate they were deposited by human foragers who brought small quantities with them for food for at least the last 7500 years. Large-scale transport of pine nuts to Danger Cave from distant hinterlands is unlikely, however. The seamless transition from limber pine to pinyon pine nuts in the Danger Cave record suggests that foragers who had utilized limber pine as a food resource easily switched to using pinyon pine nuts when pinyon pine migrated into the region at the close of the Early Holocene.  相似文献   
79.
Great Basin archaeologists spent the 1970s and most of the 1980s tearing down the Desert Culture hypothesis without presenting compelling means for dealing with the empirical variability that made it untenable. Recent research seeks to understand this variability by examining the effect of key variables in extreme environmental contexts, especially in wetlands and at high altitudes, and by developing and refining models of optimality that anticipate variability as the local expression of general evolutionary ecological principles. Research on intraregional and ethnic variability has lagged behind—the former because it is said to be costly, the latter because it is problematical in theory.  相似文献   
80.
Vera Schwarcz offers a penetrating examination of the concept and meaning of “truth” in China (antiquity to contemporary) and elsewhere (primarily in the Jewish tradition, from the Hebrew Bible to contemporary thinkers). Highly critical of the sharp turn toward cultural relativism which abandons the search for truth in the name of everyone having his or her own situated truths, she examines in particular how scholars, philosophers, and writers living in dark times have sought to cut through the enforced amnesia of oppressive regimes, especially that of post‐1949 China. This broad‐ranging search brings numerous great minds into a kind of transtemporal, transcultural conversation, voices rarely, if ever, discussed between the covers of the same book.  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