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   2483篇
  免费   174篇
  国内免费   2篇
  2023年   40篇
  2022年   47篇
  2021年   55篇
  2020年   87篇
  2019年   116篇
  2018年   126篇
  2017年   157篇
  2016年   158篇
  2015年   100篇
  2014年   103篇
  2013年   291篇
  2012年   140篇
  2011年   135篇
  2010年   94篇
  2009年   73篇
  2008年   124篇
  2007年   117篇
  2006年   121篇
  2005年   83篇
  2004年   78篇
  2003年   70篇
  2002年   48篇
  2001年   34篇
  2000年   17篇
  1999年   22篇
  1998年   11篇
  1997年   13篇
  1996年   15篇
  1995年   15篇
  1994年   15篇
  1993年   15篇
  1992年   15篇
  1991年   7篇
  1990年   12篇
  1989年   7篇
  1988年   6篇
  1987年   6篇
  1986年   11篇
  1985年   6篇
  1984年   5篇
  1983年   5篇
  1981年   8篇
  1980年   4篇
  1979年   4篇
  1978年   3篇
  1977年   4篇
  1976年   5篇
  1975年   4篇
  1970年   3篇
  1963年   3篇
排序方式: 共有2659条查询结果,搜索用时 15 毫秒
781.
This special section addresses a gap area of resilience and LGBT well‐being. Although comprehensive global diversity regarding LGBT resilience was challenging to find, the special section includes representation from outside the US (Israel and Hong Kong), ethnic/racially diverse domestic populations, immigration, and one population for which LGBT identities might be considered marginalized—Christians in the US. The full range of LGBT identities are represented in the issue along with persons identifying as queer or questioning, although transgendered people were less well represented than lesbian, gay or bisexual identities.  相似文献   
782.
783.
784.
785.
786.
787.
Long‐term deprivation of normal visual inputs can cause perceptual impairments at various levels of visual function, from basic visual acuity deficits, through mid‐level deficits such as contour integration and motion coherence, to high‐level face and object agnosia. Yet it is unclear whether training during adulthood, at a post‐developmental stage of the adult visual system, can overcome such developmental impairments. Here, we visually trained LG, a developmental object and face agnosic individual. Prior to training, at the age of 20, LG's basic and mid‐level visual functions such as visual acuity, crowding effects, and contour integration were underdeveloped relative to normal adult vision, corresponding to or poorer than those of 5–6 year olds (Gilaie‐Dotan, Perry, Bonneh, Malach & Bentin, 2009). Intensive visual training, based on lateral interactions, was applied for a period of 9 months. LG's directly trained but also untrained visual functions such as visual acuity, crowding, binocular stereopsis and also mid‐level contour integration improved significantly and reached near‐age‐level performance, with long‐term (over 4 years) persistence. Moreover, mid‐level functions that were tested post‐training were found to be normal in LG. Some possible subtle improvement was observed in LG's higher‐order visual functions such as object recognition and part integration, while LG's face perception skills have not improved thus far. These results suggest that corrective training at a post‐developmental stage, even in the adult visual system, can prove effective, and its enduring effects are the basis for a revival of a developmental cascade that can lead to reduced perceptual impairments.  相似文献   
788.
We discuss prior publication and redundancy in contemporary science in the context of changing perceptions of originality in the communication of research results. These perceptions have been changing in the publication realm, particularly in the last 15 years. Presenting a brief overview of the literature, we address some of the conflicts that are likely to arise between authors and editors. We illustrate our approach with conference presentations that are later published as journal articles and focus on a recent retraction of an article that had been previously published as a conference proceedings. Although we do not make definitive pronouncements on the matter—as many concepts are evolving—we do argue that conference papers that contain sufficient details for others to attempt a replication and are indexed in scientific databases such as PubMed, challenge some currently held assumptions of prior publication and originality in the sciences. Our view is that these important issues are in need of further clarification and harmonization within the science publishing community. This need is more evident when we consider current notions of research integrity when it comes to communication to peers. Revisiting long-standing views about what constitutes prior publication and developing a clearer set of guidelines for authors and editors to follow should reduce conflicts in the research environment, which already exerts considerable pressure, especially on newcomers in academia. However, while clearer guidelines are timely, developing them is only part of the challenge. The present times seem to call for deeper changes in the research and publication systems.  相似文献   
789.
The belief that happiness is fragile—that it is fleeting and may easily turn into less favourable states—is common across individuals and cultures. However, not much is known about this belief domain and its structure and correlates. In the present study, we use multigroup confirmatory factor analysis and multilevel modelling to investigate the measurement invariance, cross-level isomorphism, predictive validity, and nomological network of the fragility of happiness scale across 15 nations. The results show that this scale has good statistical properties at both individual and cultural levels, and is associated with relevant psycho-social concepts in expected directions. The importance of the results, limitations, and potential directions for future research are discussed.  相似文献   
790.
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