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   5133篇
  免费   179篇
  国内免费   2篇
  5314篇
  2020年   64篇
  2019年   83篇
  2018年   102篇
  2017年   121篇
  2016年   132篇
  2015年   93篇
  2014年   129篇
  2013年   627篇
  2012年   198篇
  2011年   214篇
  2010年   107篇
  2009年   139篇
  2008年   187篇
  2007年   200篇
  2006年   207篇
  2005年   174篇
  2004年   157篇
  2003年   143篇
  2002年   167篇
  2001年   79篇
  2000年   70篇
  1999年   73篇
  1998年   84篇
  1997年   78篇
  1996年   66篇
  1995年   57篇
  1994年   56篇
  1993年   58篇
  1992年   60篇
  1991年   52篇
  1990年   55篇
  1989年   66篇
  1988年   48篇
  1987年   42篇
  1986年   50篇
  1985年   44篇
  1984年   53篇
  1983年   51篇
  1982年   62篇
  1981年   54篇
  1980年   52篇
  1979年   49篇
  1978年   58篇
  1977年   48篇
  1976年   50篇
  1975年   46篇
  1974年   54篇
  1973年   50篇
  1971年   36篇
  1969年   36篇
排序方式: 共有5314条查询结果,搜索用时 7 毫秒
161.
Although the FACES has become a widely used instrument for assessing children's family relations, the possible linearity vs. curvilinearity of its cohesion and adaptability scales has been treated inconsistently by investigators. This study evaluated whether samples of adolescent repeat offenders, young adult prisoners, and adolescent nonoffenders were discriminated better by a linear or curvilinear treatment of the FACES scores. Between-groups comparisons showed that significant effects were observed for each of the three curvilinear measures (cohesion-curvilinear, adaptability-curvilinear, distance-from-center) and only one of the two linear measures (cohesionlinear). These findings support the superiority of a curvilinear treatment of the FACES. In light of these findings, it is suggested that investigators who use FACES evaluate the linearity of the scales and determine whether a linear or curvilinear treatment of the data produces more meaningful results.  相似文献   
162.
The history of selecting office employees and autonomous work group employees is discussed. This study demonstrates the implementation of autonomous work group procedures with office/clerical employees. A selection model is developed advocating the use of skill, personality, and cognitive-based tests.  相似文献   
163.
164.
165.
166.
This paper presents a strategy for pairwise assessment which may be used to evaluate the nature of both prerequisite and transference relations existing among a set of traits. This strategy is appropriate for use both within a confirmatory context, in which an attempt is made to establish the validity of some specified set of relations among traits, as well as within an exploratory context, in which a search is made for unconjectured prerequisite and transference relations existing between pairs of traits. Both uses of this strategy are based on a variety of latent class models which are representative of various possible relational states existing between pairs of traits. Thus, the nature of trait relations may be investigated through the use of statistical assessments of both absolute and relative fit attained by these models. An application is presented to exemplify how this strategy may be used within the exploratory context.The author is obliged to Clifford Clogg, C. Mitchell, Dayton, and William Schafer for helpful comments made regarding a previous draft of this paper as well as to Mary Papageorgiou who provided access to the data which was considered in this study.  相似文献   
167.
168.
169.
Data from a clinic sample of pregnant adolescents are analyzed for differences in fertility related variables between Mexican American and non Mexican. The independent variables are birthplace, ethnicity, and exposure to United States culture of Mexican and non Mexican adolescents. The dependent variables are talking about sex, pregnancy, birth control, hearing about birth control, and use of birth control. The data support the hypothesis that in the process of acculturation the fertility related behavior of immigrant Mexican adolescent females is affected by the indigenous United States Mexican culture rather than by United States Anglo culture. Implications for delivery of services are discussed. The delivery of fertility related services should take into account the cultural preferences of Mexican women, and should not involve coercion from legal or medical authorities. While liberation of Mexican American women, and accompanying changes in childbearing patterns may be desirable, these efforts should originate within the Mexican American community. Data is presented in tables on selected sample and subsample characteristics and compares fertility behaviors across ethnic groups, including Anglo, Black, US non-Mexican, and US Mexican.  相似文献   
170.
Past research has suggested that proportionally more superordinate than sub-ordinate propositions are recalled from expository texts, following a hierarchical analysis of the text structure. Since free recall has typically followed this hierarchical pattern, several researchers have assumed that the related memory structures are isomorphic to the text structure. However, few of these studies have examined how individual differences and text structure interact to affect free recall. In two experiments, the assumption of hierarchical patterns of children's recall of expository text was tested. In Experiment 1, high- and average-ability fourth graders (9 years old) were asked to read and recall a passage. Experiment 2 was a replication and extension of Experiment 1. In this experiment, fourth and sixth graders (9 and 11 years old) read and recalled a different passage. The combined results of both experiments support the notion that there is probably no one optimal hierarchical structure for storage and retrieval of expository text.  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