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   9892篇
  免费   319篇
  2020年   116篇
  2019年   161篇
  2018年   449篇
  2017年   396篇
  2016年   502篇
  2015年   189篇
  2014年   169篇
  2013年   2199篇
  2012年   239篇
  2011年   405篇
  2010年   397篇
  2009年   244篇
  2008年   268篇
  2007年   293篇
  2006年   162篇
  2005年   142篇
  2004年   121篇
  2003年   106篇
  2002年   115篇
  2001年   126篇
  2000年   136篇
  1999年   172篇
  1998年   114篇
  1997年   75篇
  1996年   87篇
  1995年   94篇
  1994年   92篇
  1993年   93篇
  1992年   96篇
  1991年   75篇
  1990年   75篇
  1989年   78篇
  1988年   85篇
  1987年   92篇
  1986年   86篇
  1985年   122篇
  1984年   121篇
  1983年   129篇
  1982年   99篇
  1981年   104篇
  1980年   107篇
  1979年   103篇
  1978年   94篇
  1977年   108篇
  1976年   86篇
  1975年   95篇
  1974年   83篇
  1973年   79篇
  1972年   62篇
  1971年   65篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
As part of emerging disciplinary interests in well‐being and emotions, geographers have recently begun to pay attention to common but often neglected psychological conditions that have the potential to impact considerably upon individuals and their daily lives. Specifically extending the scope of geographical inquiry on phobias, this paper considers acrophobia (known as being scared of heights). Through interviews with ten sufferers, the spatial character and intensity of the condition is articulated. The findings tell us that underpinning acrophobia is mathematical height: the vertical elevation from the lowest possible resting point of the body to the point at which the symptoms of acrophobia occur. This point is however ‐ even for each individual ‐ highly variable, context dependant and, in terms of explanatory potential, does not convey personal experiences. Instead, the idea of ‘encounter spaces’ provides far greater elaboration. Created by sufferers ‘dysfunctional’ spatial perceptions, these are the occupied spaces of mixed emotional and physical responses (such as fear and rapid breathing) and reactionary practices that are tactical yet somewhat involuntary in nature (such as gripping tighter or getting lower). Depending on the particular circumstances, sufferers might choose to, feel forced to, or might inadvertently enter encounter spaces. Their impacts also extend beyond immediate effects to sufferers’ longer term lives and well‐being. This might be negatively impacted, for example, through cumulative encounters, worrying about potential encounters or missing out on life events. At this level, reactionary practices ‐ again which are tactical yet somewhat involuntary ‐ are often employed in order to avoid height. Ultimately, the overall impact of acrophobia on an individual depends on a number of factors including the severity of their condition, the attitudes of the people they associate with, their job, lifestyle and the environments which they have to, or would like to, frequent. Consequently, while some sufferers cope with ease, others constantly navigate the altitude of their lives.  相似文献   
995.
One purpose of the Advocacy Coalition Framework (ACF) is to explain policy change. Previous holistic reviews of the ACF by Weible, Sabatier, and McQueen (2009) and Pierce, Peterson, Jones, Garrard, and Vu (2017) of the framework have not explicitly analyzed all the concepts and their interactions in a systematic manner. To address this gap and inform scholars and practitioners about past findings, strengths, weaknesses, and opportunities for future research, this article analyzes how the ACF's theory of policy change is applied to 148 policy processes among 67 journal articles from 2007 to 2014. Similar to Weible et al. (2009), this research finds the frequent use of multiple primary pathways to policy change, infrequent use of many of the ACF's concepts, a plurality of applications in the environment and energy domain, comparison of subsystems, and a need for greater clarity and transparency among applications. Unlike Weible et al. (2009), this article explores associations between primary pathways and policy domains, the frequency of associations between primary pathways and secondary components, policy change and stasis, and identifies threats to internal validity of key ACF concepts.  相似文献   
996.
997.
998.
999.
Summary. The earliest farming communities in Southern England were for a long time represented solely by the structural remains left behind in the form of burial monuments, henges and causewayed enclosures; only recently, through problem-oriented surface collection, has any attempt been made to locate their settlements. This paper suggests that such attempts have been limited by the very desire to locate 'sites' which made the technique attractive in the first place. Instead it is suggested that we should be attempting to 'think Mesolithic', and by using our knowledge of Neolithic settlement and land-use strategies, attempt to locate zones of continuity which undoubtedly occurred in certain 'favourable locations'within the landscape. Case studies from East and West Hampshire are discussed and two types of adaptive behaviour are identified.  相似文献   
1000.
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