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   559篇
  免费   11篇
教育   454篇
科学研究   24篇
各国文化   9篇
体育   25篇
文化理论   11篇
信息传播   47篇
  2023年   2篇
  2022年   4篇
  2021年   7篇
  2020年   11篇
  2019年   28篇
  2018年   37篇
  2017年   33篇
  2016年   32篇
  2015年   17篇
  2014年   21篇
  2013年   135篇
  2012年   18篇
  2011年   13篇
  2010年   15篇
  2009年   14篇
  2008年   12篇
  2007年   12篇
  2006年   7篇
  2005年   11篇
  2004年   5篇
  2003年   5篇
  2002年   10篇
  2001年   4篇
  2000年   3篇
  1999年   6篇
  1998年   9篇
  1997年   6篇
  1996年   8篇
  1995年   5篇
  1994年   3篇
  1993年   4篇
  1992年   3篇
  1991年   7篇
  1990年   2篇
  1989年   4篇
  1988年   4篇
  1985年   2篇
  1984年   4篇
  1979年   4篇
  1978年   4篇
  1977年   5篇
  1976年   8篇
  1975年   6篇
  1974年   6篇
  1973年   3篇
  1967年   1篇
  1966年   1篇
  1965年   1篇
  1956年   1篇
  1907年   1篇
排序方式: 共有570条查询结果,搜索用时 562 毫秒
61.
Mixture models capture heterogeneity in data by decomposing the population into latent subgroups, each of which is governed by its own subgroup-specific set of parameters. Despite the flexibility and widespread use of these models, most applications have focused solely on making inferences for whole or subpopulations, rather than individual cases. This article presents a general framework for computing marginal and conditional predicted values for individuals using mixture model results. These predicted values can be used to characterize covariate effects, examine the fit of the model for specific individuals, or forecast future observations from previous ones. Two empirical examples are provided to demonstrate the usefulness of individual predicted values in applications of mixture models. The first example examines the relative timing of initiation of substance use using a multiple event process survival mixture model, whereas the second example evaluates changes in depressive symptoms over adolescence using a growth mixture model.  相似文献   
62.
Mu  Lanlan  Cole  James 《Research in higher education》2019,60(8):1171-1194
Research in Higher Education - Several recent studies have successfully identified college student typologies based on individuals’ behaviors. One limitation of past studies has been their...  相似文献   
63.
For more than 20 years, the New Zealand early childhood (EC) sector has had guidance about how to deal with situations of ethical difficulty in daily practice through the ECE Code of Ethics. This paper reports on three surveys undertaken at 10-year intervals that sought to understand EC educators’ experiences of such situations, and how they addressed them within their EC settings. An analysis of educators’ stories of ethically troubling situations from the three data-sets traced shifts and similarities in the content reported, and in how educators responded to these challenges over the two-decade period. We situate this analysis alongside changes in the New Zealand ECE policy context during the same time frame. We argue that a connection exists between the reported situations and teachers’ responses to them, and changes within the policy and professional context of daily EC practice.  相似文献   
64.
65.
66.
In this paper we describe an ontological and semiotic model for mathematical knowledge, using elementary combinatorics as an example. We then apply this model to analyze the solving process of some combinatorial problems by students with high mathematical training, and show its utility in providing a semiotic explanation for the difficulty of combinatorial reasoning. We finally analyze the implications of the theoretical model and type of analysis presented for mathematics education research and practice.  相似文献   
67.
In this article the authors examine elaboration theory (ET), a model for sequencing and organizing courses which was developed by Charles Reigeluth and associates in the late 1970s. The purpose of the article is to offer a critique of ET based on recent cognitive research and to offer suggestions for updating the model to reflect new knowledge.Commentary by Charles Reigeluth follows this article.  相似文献   
68.
Abstract

The Umbrella Movement in Hong Kong is a 79 days political protest and occupy campaigns in major areas in the city. This chronology lists the key events prior to and during the movement.  相似文献   
69.
70.
Lick suppression experiments with rats revealed that the magnitude of both second-order conditioning (Experiment 1) and sensory preconditioning (Experiment 2) was superior when that conditioning was based on backward (US→CS) relative to forward (CS→US) first-order pairings of a CS and US. The superiority of backward relative to forward first-order conditioning on suppression to the higher order cues can be understood by assuming that the magnitude of higher order conditioning was determined by a memory representation of the higher order cues that provided information about the expected temporal location of the US. The results suggest that temporal information such as order between paired CSs and USs was encoded, preserved, and integrated with memory for the higher order stimuli. The relevance of these findings to memory integration in Pavlovian learning, the temporal coding hypothesis (Barnet, Arnold, & Miller, 1991; Matzel, Held, & Miller, 1988), backward excitatory conditioning, and the associative structure that underlies second-order Pavlovian fear conditioning are discussed.  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