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   545篇
  免费   145篇
  2024年   3篇
  2023年   27篇
  2022年   8篇
  2021年   39篇
  2020年   86篇
  2019年   90篇
  2018年   66篇
  2017年   57篇
  2016年   31篇
  2015年   34篇
  2014年   16篇
  2013年   136篇
  2012年   6篇
  2011年   7篇
  2010年   4篇
  2009年   4篇
  2008年   3篇
  2007年   8篇
  2006年   6篇
  2005年   6篇
  2004年   6篇
  2002年   1篇
  2001年   3篇
  2000年   4篇
  1999年   4篇
  1998年   3篇
  1997年   3篇
  1996年   2篇
  1995年   2篇
  1984年   6篇
  1983年   3篇
  1982年   8篇
  1981年   2篇
  1980年   1篇
  1979年   2篇
  1978年   2篇
  1977年   1篇
排序方式: 共有690条查询结果,搜索用时 15 毫秒
161.
The h-index originates from the assumption that the number of citations received by a scientist is a better indicator of the relevance of his or her work than the number of papers he or she publishes or the journals where they are published. It takes into account the number of papers published and the citations to those papers in a balanced way, and thus is useful to make comparisons between scientists. The present paper addresses the most frequent questions about the h-index. Specifically, it explains its origin, its advantages compared to other indices, the factors that can influence it (e.g. age, field of knowledge, topic of research and language of publication), its variants, and the injustices it may lead to. In short, this paper provides a clear exposition of the hoped-for role of the h-index in the evaluation of scientists: that it serves as a useful complement to other indicators that are more subjective, and that it contributes to the progress of science by aiding decision-making on allocation of research resources in a more effective way, and on rewarding researchers who contribute to scientific progress in a more fair way.  相似文献   
162.
163.
164.
IntroductionThe present study aimed to examine the effect of blue and red uniform colors on competitive anxiety and self-confidence in virtual sports competitions.ObjectiveWe hypothesized that blue is related to higher levels of self-confidence (a feeling related to the approach motivational system), whereas red is related to higher levels of anxiety (a feeling related to the avoidance motivational system).MethodParticipants were confronted with an opponent dressed in either blue or in red.ResultsResults revealed that participants who were exposed to an opponent in blue reported a higher level of self-confidence, while those who were exposed to an opponent in red reported a higher level of cognitive anxiety, supporting the view that blue (red) is related to the approach (avoidance) motivational system.ConclusionOur findings incite a pursuit of the examination of the relationship between blue, red, competitive anxiety, and self-confidence in sport competitions.  相似文献   
165.
One of the problems facing psychoanalysts of all schools is that theory has evolved at a much faster pace than practice. Whereas there has been an explosion of theory, practice has remained, at least officially, static and unchanging. It is in this sense that Murray Jackson's 1961 paper is still relevant today. Despite the rise of the new relational and intersubjective paradigms, most psychoanalysts, and not a few Jungian analysts, still seem to feel that the couch is an essential component of the analytical setting and process. If the use of the couch is usually justified by the argument that it favours regression, facilitates analytical reverie and protects the patient from the influence of the analyst, over time many important psychoanalysts have come to challenge this position. Increasingly these analysts suggest that the use of the couch may actually be incompatible with the newer theoretical models. This contention is strengthened by some of the findings coming from the neurosciences and infant research. This underlines the necessity of empirical research to verify the clinical effectiveness of these different positions, couch or face‐to‐face, but it is exactly this type of research that is lacking.  相似文献   
166.
Nuanced, multifaceted, and content valid diagnostic criteria for intimate partner violence (IPV) have been created and can be used reliably in the field even by those with little‐to‐no clinical training/background. The use of such criteria such as these would likely lead to more reliable decision making in the field and more consistency across studies. Further, interrater agreement was higher than that usually reported for individual mental disorders. This paper will provide an overview of (a) IPV's scope and impact; (b) the reliable and valid diagnostic criteria that have been used and the adaptation of these criteria inserted in the latest Diagnostic and Statistical Manual of Mental Disorders (DSM) and another adaptation proposed for the forthcoming International Statistical Classification of Diseases and Related Health Problems (ICD); (c) suggestions for screening of IPV in primary care settings; (d) interventions for IPV; and (e) suggested steps toward globally accepted programs.  相似文献   
167.
This paper examines the application of the guidelines for evidence‐based treatments in family therapy developed by Sexton and collaborators to a set of treatment models. These guidelines classify the models using criteria that take into account the distinctive features of couple and family treatments. A two‐step approach was taken: (1) The quality of each of the studies supporting the treatment models was assessed according to a list of ad hoc core criteria; (2) the level of evidence of each treatment model was determined using the guidelines. To reflect the stages of empirical validation present in the literature, nine models were selected: three models each with high, moderate, and low levels of empirical validation, determined by the number of randomized clinical trials (RCTs). The quality ratings highlighted the strengths and limitations of each of the studies that provided evidence backing the treatment models. The classification by level of evidence indicated that four of the models were level III, “evidence‐based” treatments; one was a level II, “evidence‐informed treatment with promising preliminary evidence‐based results”; and four were level I, “evidence‐informed” treatments. Using the guidelines helped identify treatments that are solid in terms of not only the number of RCTs but also the quality of the evidence supporting the efficacy of a given treatment. From a research perspective, this analysis highlighted areas to be addressed before some models can move up to a higher level of evidence. From a clinical perspective, the guidelines can help identify the models whose studies have produced clinically relevant results.  相似文献   
168.
Synthesis of family research presents unique challenges to investigators who must delimit what will be included as a family study in the proposed review. In this paper, the authors discuss the conceptual and pragmatic challenges of conducting systematic reviews of the literature on the intersection between family life and childhood chronic conditions. A proposed framework for delimiting the family domain of interest is presented. The framework addresses both topical salience and level of relevance and provides direction to future researchers, with the goal of supporting the overall quality of family research synthesis efforts. For users of synthesis studies, knowledge of how investigators conceptualize the boundaries of family research is important contextual information for understanding the limits and applicability of the results.  相似文献   
169.
170.
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