全文获取类型
收费全文 | 6453篇 |
免费 | 1746篇 |
国内免费 | 835篇 |
专业分类
9034篇 |
出版年
2024年 | 8篇 |
2023年 | 79篇 |
2022年 | 92篇 |
2021年 | 184篇 |
2020年 | 255篇 |
2019年 | 513篇 |
2018年 | 408篇 |
2017年 | 538篇 |
2016年 | 531篇 |
2015年 | 452篇 |
2014年 | 427篇 |
2013年 | 783篇 |
2012年 | 460篇 |
2011年 | 431篇 |
2010年 | 462篇 |
2009年 | 450篇 |
2008年 | 442篇 |
2007年 | 429篇 |
2006年 | 382篇 |
2005年 | 372篇 |
2004年 | 262篇 |
2003年 | 218篇 |
2002年 | 176篇 |
2001年 | 137篇 |
2000年 | 114篇 |
1999年 | 76篇 |
1998年 | 44篇 |
1997年 | 40篇 |
1996年 | 25篇 |
1995年 | 30篇 |
1994年 | 31篇 |
1993年 | 22篇 |
1992年 | 19篇 |
1991年 | 17篇 |
1990年 | 13篇 |
1989年 | 17篇 |
1988年 | 7篇 |
1987年 | 11篇 |
1986年 | 11篇 |
1985年 | 12篇 |
1984年 | 8篇 |
1983年 | 5篇 |
1982年 | 7篇 |
1981年 | 9篇 |
1980年 | 6篇 |
1979年 | 8篇 |
1977年 | 4篇 |
1976年 | 2篇 |
1973年 | 1篇 |
1972年 | 2篇 |
排序方式: 共有9034条查询结果,搜索用时 15 毫秒
61.
62.
实验设计通常被当作一种种设计模式.这种方法可称之为实验设计的模式方法。但本文认为,这种常用的方法事实上存在着不少缺点。于此.本文尝试提出了一种新的实验设计方法——实验设计的变量方法。实验设计的变量方法的基本思想是.从实验研究的问题出发,根据实验中变量的性质或特点确定实验设计的具体内容。本文最后讨论了实验设计变量方法的优越性。 相似文献
63.
管理胜任力特征分析:结构方程模型检验 总被引:171,自引:0,他引:171
管理胜任力特征分析是人事选拔与评价的重要内容之一。本研究在运用基于胜任力的职位分析并总结国内外有关文献的基础上,编制了管理综合素质评价量表,并运用此量表调查了220名中高层管理者,采用因素分析和结构方程模型检验企业高级管理者胜任力特征的结构。结果表明,管理胜任力特征结构由管理素质和管理技能等两个维度构成,但在维度要素及其关键度上,职位层次间存在显著差异。本研究为管理职位的测评选拔提供了新的理论依据。 相似文献
64.
语义启动模型以及启动范围 总被引:6,自引:0,他引:6
启动效应一般分为两种——知觉启动和语义启动(概念启动)。语义启动的范式逐渐成为研究语义知识在大脑中是如何存储的主要研究手段。该文针对语义启动发生的3种机制:激活扩散模型,复合线索模型和分布式记忆模型进行了简要的评述,并且重点介绍了分布式记忆模型。同时对启动效应可以激活语义知识的范围作了一个简要的概括。 相似文献
65.
66.
维果茨基心理学理论述评 总被引:1,自引:0,他引:1
维果茨基是苏联早期一位才华横溢的杰出心理学家,社会文化历史学派的创始人。近年来国际上出现的维果茨基研究热,充分显示了维果茨基心理学思想对现代心理科学的重要的现实意义。维果茨基的心理学理论异常丰富,主要包括活动理论、工具理论、思维和言语理论、教学和发展理论、心理学方法论等。维果茨基心理学理论是对意识的文化历史决定的研究的重要贡献,其理论不足之处主要带有抽象社会观点的色彩等。 相似文献
67.
Dorothy M. Fragaszy Amy T. Galloway Julie Johnson‐Pynn Karen Brakke 《Developmental science》2002,5(1):118-131
Is a concept of either reversibility or of hierarchical forms of combination necessary for skilled seriation? We examined this question by presenting seriating cups to adult capuchin monkeys and chimpanzees and to 11‐, 16‐ and 21‐month‐old children. Capuchins and chimpanzees consistently created seriated sets with five cups, and placed a sixth cup into a previously seriated set. Children of all three ages created seriated five‐cup sets less consistently than the capuchins and chimpanzees, and were rarely able to place a sixth cup into a seriated set. Twenty‐one‐month‐olds produced more structures containing three or more cups than did the younger age groups, and these children also achieved seriated sets more frequently. Within all participant groups, success at seriating five cups was associated with the frequency of combining three or more cups, regardless of form. The ability to integrate multiple elements in persistent combinatorial activity is sufficient for the emergence of seriation in young children, monkeys and apes. Reliance on particular methods of combination and a concept of reversibility are later refinements that can enhance skilled seriation. 相似文献
68.
MARIO G
MEZ‐TORRENTE 《Philosophy and phenomenological research》2002,64(1):107-125
Timothy Williamson's potentially most important contribution to epistemicism about vagueness lies in his arguments for the basic epistemicist claim that the alleged cut‐off points of vague predicates are not knowable. His arguments for this are based on so‐called ‘margin for error principles’. This paper argues that these principles fail to provide a good argument for the basic claim. Williamson has offered at least two kinds of margin for error principles applicable to vague predicates. A certain fallacy of equivocation (on the meaning of ‘knowable’) seems to underlie his justification for both kinds of principles. Besides, the margin for error principles of the first kind can be used in the derivation of unacceptable consequences, while the margin for error principles of the second kind can be shown to be compatible with the falsity of epistemicism, under a number of assumptions acceptable to the epistemicist. 相似文献
69.
In this study, the development of white matter was studied using an optimized diffusion tensor imaging (DTI) protocol in 20 normal subjects (10–40 years old). The normal development of white matter tracts was addressed by comparing the diffusion anisotropy results between two sub‐groups: eight adults (26–38 years old) and eight adolescents (13–15 years old). The difference in myelination extent between these two groups as indexed by the fractional anisotropy was identified by conducting a student t‐test of the measured diffusion anisotropy maps. Significant differences (p < 0.01) were detected in the gyrus frontalis medialis (GFM), gyrus temporalis medialis (GTM) and gyrus cinguli (GC), in addition to the developmental changes in corpus callosum. A brief overview of previous published DTI studies in developmental science and current progress in DTI techniques is also given at the end of this paper. It may be useful for readers interested in using DTI to study developmental problems but who are not familiar with the various technical aspects. 相似文献
70.
Sara‐Jayne Williams Daniel B. Wright Norman H. Freeman 《Applied cognitive psychology》2002,16(6):651-664
Children are generally more susceptible than adults to suggestive interview techniques. Children's memories of an event can be altered and added to by presenting post‐event information (PEI). What is not known is whether embedding silence about a particular scene within the PEI makes that scene less likely to be reported. Children aged 5–6 years made cakes with an agent ‘Mrs Flour’. The following day they received PEI in which a target scene from the original event was omitted, resulting in children reporting the target scene significantly less often than did controls (control= 57% and omit= 23% correct responses). There was direct evidence from the children's language that the omission led to a detriment in memory for the original scene itself. Allowing children to draw during the interview did not reduce the effect. Implications are discussed in terms of child victims and witnesses particularly regarding child sexual abuse. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献