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   455篇
  免费   56篇
  国内免费   97篇
  2024年   1篇
  2023年   14篇
  2022年   14篇
  2021年   18篇
  2020年   20篇
  2019年   16篇
  2018年   22篇
  2017年   22篇
  2016年   26篇
  2015年   11篇
  2014年   17篇
  2013年   42篇
  2012年   26篇
  2011年   34篇
  2010年   32篇
  2009年   24篇
  2008年   35篇
  2007年   46篇
  2006年   34篇
  2005年   32篇
  2004年   19篇
  2003年   22篇
  2002年   13篇
  2001年   5篇
  2000年   11篇
  1999年   4篇
  1998年   7篇
  1997年   4篇
  1996年   1篇
  1995年   8篇
  1994年   7篇
  1993年   2篇
  1992年   3篇
  1991年   1篇
  1990年   2篇
  1989年   3篇
  1988年   2篇
  1987年   4篇
  1986年   1篇
  1984年   1篇
  1983年   1篇
  1979年   1篇
排序方式: 共有608条查询结果,搜索用时 15 毫秒
491.
In a meta-analysis of intervention or group comparison studies, researchers often encounter the circumstance in which the standardized mean differences (d-effect sizes) are computed at multiple levels (e.g., individual vs. cluster). Cluster-level d-effect sizes may be inflated and, thus, may need to be corrected using the intraclass correlation (ICC) before being combined with individual-level d-effect sizes. The ICC value, however, is seldom reported in primary studies and, thus, may need to be computed from other sources. This article proposes a method for estimating the ICC value from the reported standard deviations within a particular meta-analysis (i.e., estimated ICC) when an appropriate default ICC value (Hedges, 2009b) is unavailable. A series of simulations provided evidence that the proposed method yields an accurate and precise estimated ICC value, which can then be used for correct estimation of a d-effect size. The effects of other pertinent factors (e.g., number of studies) were also examined, followed by discussion of related limitations and future research in this area.  相似文献   
492.
从外科医师和麻醉科医师传统临床思维方法特点分析,认为传统术后镇痛具有明显的片面性、专一性等临床诊疗的局限性。而从实践思维和循证医学理论角度分析,认为术后镇痛在围手术期“人性化”诊疗、防治全身炎症反应综合征或围手术期癌转移等方面具有的重要性与广阔前景。  相似文献   
493.
关于建立健全治理医药购销领域商业贿赂长效机制的思考   总被引:1,自引:0,他引:1  
医药购销领域的商业贿赂,形式多样,对我国政治、经济、社会等方面均带来很大的负面影响。它的出现,既有物质条件、心理条件,更有制度条件。治理医药购销领域的商业贿赂,要从思想道德建设、制度建设、体制改革、管理监督等从多方面着手,建立健全长效机制。  相似文献   
494.
权变管理理论与《易经》哲学思考   总被引:1,自引:0,他引:1  
随着全球经济一体化的日益深入,组织所面临的内外环境更加复杂.权变管理理论对组织的决策、计划、领导等方面的作用越来越受到人们的重视,本文将结合《易经》哲学的一些观点从变化观、系统观、过程观等方面对权变管理理论进行探讨.  相似文献   
495.
云龙是云南省历史悠久的重要产盐地。云龙山地白族的盐井文化其内涵十分丰富,与该地的历史、政治、经济、文化的开拓发展息息相关,也在当地白族宗教文化的建构中打下了烙印。探讨云龙山地白族的盐井宗教民俗及其文化内涵,不仅可以映证云龙盐井生产的历史,而且可以映证云龙山地白族宗教文化的特性。白族的盐井宗教民俗文化是云龙宝贵的民族文化遗产,也是云龙山地白族原生态文化的重要组成部分。  相似文献   
496.
While there is growing consensus that conventional notions of the scientific method do not exhaust the methodological needs of policy analysis (at least applied analysis), there is less agreement as to what an improved method would entail. As a result, policy analysts must choose among often competing notions of what constitutes valid policy inquiry. Data from a content analysis of six policy journal articles together with responses from a survey of authors are used to determine what choices are made and whether these matter. Two sets of research norms are discovered within the policy studies community’one which mirrors traditional social science values and another which reflects recent attempts to adjust that methodology to meet the information needs of policy actors. Equally important, values tend, albeit slightly, to condition the character (e.g., degree of rigor or focus) of policy research. David M. Hedge is an associate professor of political science and director of the graduate program in public policy at West Virginia University. His research interests include regulatory politics, intergovernmental relations, and state politics/policy. Jin W. Mok is an assistant professor of political science at the University of Northern Iowa. His area of interests are public policy and methodology.  相似文献   
497.
Brain potentials related to seeing one''s own name   总被引:1,自引:0,他引:1  
Subjects were assigned an assumed name and then shown a series of statements of the form, "My name / is / X", where X was the assumed name, their own first name, or one of a set of other false names. Their task was to respond positively to the "assumed" name and reject as false all other names, including their own. An N380 feature of the averaged task-related brain potentials, considered to be inversely related to the degree of contextual priming, was greatly enhanced for the false names compared to the assumed name. The N380 to one's own name was more similar to that of the false than the assumed name, indicating that the sentence context's priming of various names was under the subjects' attentional control, and that the late negativity could be modulated by this attention. In contrast, a large P510 feature distinguished one's own name from the false name, and this difference was unaffected by practice. Even in cases, then, where the context allows anticipation of one verbal event (here, the assumed name), a highly overlearned and salient stimulus such as one's own name continues to produce a distinctive neural response.  相似文献   
498.
本工作的目的是希望了解立体感形成时双眼图象空间频谱的融合规律。我们利用不同质地的两套随机点立体图对,经过不同空间频带(低通、高通、带通)的光学滤波处理,然后将滤波后的图象作各种左右眼搭配观察。得到: 1.同样滤波的立体图对均能形成立体感; 2.不同质地的立体图对,空间频带搭配相同,但观察结果并不完全相同。 3.目前我们尚不能用立体图对的两个图像的空间频带是否重叠来了解两眼融合的规律。  相似文献   
499.
In-group Bias and Culture of Collectivism   总被引:3,自引:0,他引:3  
In this paper I present an argument that culture of collectivism which characterizes Japanese society is to be conceived in terms of an equilibrium between socio-relational and cognitive traits in which people have acquired expectations for generalized reciprocity within, not across, group boundaries. Maintenance of harmony among group members and voluntary cooperation toward group goals – the characteristics of collectivist culture – are often considered to be fundamentally psychological in nature. It is usually considered that members of a collectivist culture like to maintain harmony and cooperate toward group goals, or that "culture" sneaks into the minds of people and drives them to behave in such a manner. According to this view, culture is a fundamentally psychological or subjective matter. This is the view that I want to challenge in this paper.  相似文献   
500.
张苏范  王援朝 《心理科学》1993,16(2):95-98,94
本文报告了30名健康人在进行心算、反应时、握力、冷压试验时以及其前后的生理与心理变化。发现主观感受相似的背景下,心算同样可引起明显的血压与皮电反应变化与较慢的指温变化,验证了心身相关理论的正确性。另测查结果显示个体间生理反应不同,但同一个体重复测查结果则明显正相关,验证了行为(生理反应)模式相对稳定的论点。  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