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   12894篇
  免费   146篇
  国内免费   9篇
教育   8808篇
科学研究   1487篇
各国文化   384篇
体育   880篇
综合类   6篇
文化理论   111篇
信息传播   1373篇
  2021年   108篇
  2020年   154篇
  2019年   215篇
  2018年   285篇
  2017年   303篇
  2016年   296篇
  2015年   186篇
  2014年   238篇
  2013年   2569篇
  2012年   235篇
  2011年   239篇
  2010年   215篇
  2009年   235篇
  2008年   282篇
  2007年   258篇
  2006年   241篇
  2005年   205篇
  2004年   229篇
  2003年   162篇
  2002年   157篇
  2001年   205篇
  2000年   235篇
  1999年   197篇
  1998年   138篇
  1997年   130篇
  1996年   123篇
  1995年   120篇
  1994年   123篇
  1993年   135篇
  1992年   203篇
  1991年   202篇
  1990年   194篇
  1989年   201篇
  1988年   167篇
  1987年   165篇
  1986年   164篇
  1985年   209篇
  1984年   167篇
  1983年   156篇
  1982年   156篇
  1981年   114篇
  1980年   136篇
  1979年   185篇
  1978年   121篇
  1977年   117篇
  1976年   112篇
  1975年   113篇
  1974年   115篇
  1973年   103篇
  1971年   92篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
962.
B. V. Rao 《Resonance》2011,16(11):1029-1038
In this two-part article, we are trying to discover patterns in the decimal digits of numbers between zero and one. In Part I we started showing that each digit occurs with frequency 1/10. We reduced the problem with the help of Borel-Cantelli Lemma and Markov inequality to show certain sums of integrals are finite. In this concluding part we bring in an essentially new ingredient and conclude the proof.  相似文献   
963.
To examine the development of religious identity during the teenage years, adolescents (N = 477) from Latin American, Asian, and European backgrounds completed questionnaires in the 10th, 11th, and 12th grades (10th grade age: M = 15.81, SD = 0.36). Results indicated that religious identity remained stable across high school whereas religious participation declined. Even after controlling for ethnic differences in religious affiliation, socioeconomic background, and generational status, adolescents from Latin American and Asian backgrounds reported higher levels of religious identity and adolescents from Latin American backgrounds reported higher rates of religious participation. Within individual adolescents, changes in religious identity were associated with changes in ethnic and family identities, suggesting important linkages in the development of these social identities during adolescence.  相似文献   
964.
The genetic and environmental overlap between static and dynamic measures of preschool phonological awareness (PA) and their relation to preschool letter knowledge (LK) and kindergarten reading were examined using monozygotic and dizygotic twin children (maximum N = 1,988). The static tests were those typically used to assess a child's current level of PA such as blending and elision, and the dynamic test included instruction in phoneme identity to assess the child's ability to respond to this instruction. Both forms were influenced by genes and by shared and nonshared environment. The static and dynamic versions were influenced by the same genes, and part of the total genetic influence was shared with LK. They were subject to both overlapping and independent shared environment influences, with the component in common also affecting LK. Nonshared environment influences were mostly independent. Scores from dynamic assessment added only minimally to variance explained in kindergarten reading after LK and static assessment had been factored in. Although one of the genetic factors that influenced both forms of PA also affected kindergarten reading, it was only the one shared with LK. The authors conclude that dynamic assessment of PA in preschool offers little advantage over the more commonly used static forms, especially if LK scores are available, although they acknowledge its potential in cases of preschool educational disadvantage.  相似文献   
965.
Children with learning problems require early intervention. If it is evidence based and implemented with integrity and intensity, it will accelerate the academic progress of many students. This is the hope and expectation of the many supporters of responsiveness-to-intervention (RTI). A minority of children, however, will not respond sufficiently to such intervention because of learning disorders like specific learning disabilities (SLD). Some RTI models do not include research-backed methods to identify these children, nor do RTI practitioners often produce the data necessary to develop individualized instruction for them. The authors suggest practitioners go beyond typical RTI assessment data documenting responsiveness/ unresponsiveness to conduct comprehensive evaluations of these most difficult-to-teach students and to include in their evaluations carefully chosen cognitive measures. This special issue presents the work of teams of researchers, which suggests that cognitive and neuropsychological assessments can provide information to further understand SLD, which in turn can guide development of promising interventions.  相似文献   
966.
This chapter reviews sensitive periods in human brain development based on the literature on children raised in institutions. Sensitive experiences occur when experiences are uniquely influential for the development of neural circuitry. Because in humans, we make inferences about sensitive periods from evaluations of complex behaviors, we underestimate the occurrence of sensitive periods at the level of neural circuitry. Although we are most interested in complex behaviors, such as IQ or attachment or externalizing problems, many different sensitive periods at the level of circuits probably underlie these complex behaviors. Results from a number of studies suggest that across most, but not all, domains of development, institutional rearing limited to the first 4–6 months of life is associated with no significant increase risk for long‐term adverse effects relative to noninstitutionalized children. Beyond that, evidence for sensitive periods is less compelling, meaning that “the earlier the better” rule for enhanced caregiving is a reasonable conclusion at the current state of the science.  相似文献   
967.
The development of interest in reading and its relationship to reading ability was examined longitudinally in 117 children in Grades 1–3. Interest in reading was measured by eight items from the Elementary Reading Attitude Survey. Less able readers had lower interest in reading, but their development was parallel to that of more able readers. Interest in reading in Grade 1 was weakly correlated with Grade 3 reading ability, but correlations were lower for interest measured in Grades 2 and 3. Hierarchical regression analyses indicated weak and inconsistent effects of reading interest on reading ability after controlling general cognitive ability, SES, phonological awareness and naming speed. It is concluded that interest in reading has only a weak relationship to reading ability in the early elementary years, and that much of that relationship overlaps with the effects of other more powerful predictors.  相似文献   
968.
This paper develops the concept of graduate identity as a way of deepening the understanding of graduate employability. It does this through presenting research in which over 100 employers in East Anglia were asked to record their perceptions of graduates in respect of their employability. The findings suggest a composite and complex graduate identity, depending on employer size and sector. There is no one fixed identity for graduates. Nevertheless, certain themes emerged that seriously put into question the traditional model of graduate employability comprising skills, competencies and attributes. What emerges is a four‐stranded concept of identity that comprises value, intellect, social engagement and performance. Thus, when assessing the potential of graduates, performance is not the only criteria that employers take into account. Moreover, the four elements of identity are by no means independent of each other but are expected to interpenetrate producing a composite identity, with different employers emphasising different facets of this identity.
    相似文献   
969.
970.
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