全文获取类型
收费全文 | 1218篇 |
免费 | 33篇 |
国内免费 | 1篇 |
专业分类
教育 | 1005篇 |
科学研究 | 38篇 |
各国文化 | 17篇 |
体育 | 70篇 |
文化理论 | 4篇 |
信息传播 | 118篇 |
出版年
2024年 | 4篇 |
2023年 | 4篇 |
2022年 | 8篇 |
2021年 | 13篇 |
2020年 | 34篇 |
2019年 | 30篇 |
2018年 | 63篇 |
2017年 | 61篇 |
2016年 | 69篇 |
2015年 | 38篇 |
2014年 | 46篇 |
2013年 | 272篇 |
2012年 | 50篇 |
2011年 | 44篇 |
2010年 | 39篇 |
2009年 | 29篇 |
2008年 | 31篇 |
2007年 | 33篇 |
2006年 | 21篇 |
2005年 | 38篇 |
2004年 | 20篇 |
2003年 | 36篇 |
2002年 | 24篇 |
2001年 | 15篇 |
2000年 | 10篇 |
1999年 | 20篇 |
1998年 | 12篇 |
1997年 | 7篇 |
1996年 | 13篇 |
1995年 | 10篇 |
1994年 | 9篇 |
1993年 | 6篇 |
1992年 | 10篇 |
1991年 | 4篇 |
1990年 | 10篇 |
1989年 | 9篇 |
1988年 | 8篇 |
1987年 | 5篇 |
1986年 | 8篇 |
1985年 | 9篇 |
1983年 | 7篇 |
1981年 | 5篇 |
1980年 | 5篇 |
1979年 | 10篇 |
1977年 | 5篇 |
1976年 | 7篇 |
1973年 | 6篇 |
1971年 | 4篇 |
1968年 | 4篇 |
1923年 | 3篇 |
排序方式: 共有1252条查询结果,搜索用时 718 毫秒
21.
22.
The Consistency and Concomitants of Inhibition: Some of the Children, All of the Time 总被引:6,自引:1,他引:6
Kenneth H. Rubin Paul D. Hastings Shannon L. Stewart Heather A. Henderson Xinyin Chen 《Child development》1997,68(3):467-483
Toddlers displaying extremely inhibited behavior may be at risk for becoming socially withdrawn. However, behavioral inhibition may be a multifaceted characteristic, and its concurrent relation to toddler wariness with peers has not been examined. In this study, 108 toddlers (54 females) and their mothers were observed in novel situations involving unfamiliar settings, adults, and peers. Vagal tone, temperament, separation-reunion behavior, and maternal oversolicitousness also were assessed. There was little consistency of inhibited behavior across the 3 situations. Consistently inhibited toddlers had fearful temperaments, showed distress following maternal separation, and had mothers who were warm and controlling but unresponsive to children's cues during interaction. Toddlers with highly fearful temperaments and highly oversolicitous mothers were the most inhibited across contexts. 相似文献
23.
The purpose of this study was to determine if there is a relationship between learner personality types and perceived satisfaction when using Web-based instruction for mandatory and self-regulated continuing professional development. Two hundred and four real estate practitioners who participated in a Web-based professional development course completed the Millon Index of Personality Styles (MIPS) instrument and a survey to compare personality type and satisfaction. No relationship was found between personality types and satisfaction when using Web-based instruction. The majority (97%) of participants were satisfied with the course regardless of their personality characteristics. 相似文献
24.
Mechanisms of the relation between perinatal problems, early childhood illness, and psychopathology in late childhood and adolescence 总被引:6,自引:0,他引:6
Data on perinatal and early childhood somatic and psychological risk factors of a random sample of children were gathered in early to middle childhood and employed to examine the long-term risk of emotional and behavioral problems of late childhood and adolescence. 3 issues were addressed: First, can syndromic specificity of such effects be identified on scaled and diagnostic measures of syndromes? Second, are these effects attributable to excess risk of low-income children for both perinatal and later childhood problems? Third, are the intervening mechanisms identifiable as intellectual impairment, vulnerability to poor health, poor maternal caretaking, maternal rejection, or maternal stress associated with marital problems? Findings indicated that elevated risk was present for all syndromes, both at the scale level and at the diagnostic level. None of the examined intervening mechanisms fully accounted for the effects of early risks. 相似文献
25.
ABSTRACT Cities in the United States and across the world have experienced gentrification at the same time as school choice policies have become more popular. This research examines the relationship between gentrification and charter schooling, seeking to understand how together they affect demographic composition of schools across Washington, DC. This study uses geographic information systems (GIS) mapping and statistical techniques to show that gentrified neighborhoods are more likely to have charter schools. Additionally, the demographic compositions of charter schools and traditional public schools differ depending on the gentrification classification of the census tract in which the schools are located. While a handful of diverse charter schools exist in gentrified neighborhoods and some diverse public schools exist in traditionally affluent neighborhoods, schools in Washington, DC remain racially and economically isolated overall. 相似文献
26.
27.
Heather Trommer-Beardslee Ann Dasen Wiline Pangle Jay Batzner 《Teaching Artist Journal》2019,17(1-2):45-50
In 2016, professors representing Biology, Dance, Music, and Theatre and dance program students created Dunes, a performance piece that depicts the ecological succession of Michigan's sand dunes. The process used to make this work is a direct representation of the steps that Team Hyena Puppet, a collective of teaching artists and scientists, takes in their science-based art collaborations, which are used to reflect on and depict scientific research and simultaneously teach student participants and audience members science through the performing arts. 相似文献
28.
29.
Severe underrepresentation of African-Americansamong postsecondary faculty is often linked toeducational pipeline supply problems,while institutional variations in demandfor black faculty labor and barriers to theirrecruitment and retention receive less empiricalattention. Using a nationally representative sample ofcollege faculty from a wide array of institutions andscience disciplines, this study investigates linksbetween internal organizational conditions and blackfaculty representation. Hypotheses derive from competingexplanations of the role of race in academicorganizations: institutionalized discrimination to protectdominant group privileges; statistical discriminationbased on expectations of racial group differences inacademic preparation; labor supply and politicalconstraints on black faculty recruitment. A multivariateanalysis examines organizational conditions that promoteor curb these dynamics and their relationship to blackappointments at different tenure levels. Results indicate that although the discipline-specificblack doctoral labor supply is a powerful constraint onthe representation of black faculty, selectiveorganizational contexts are substantial influences as well. Although we find little evidence thatinsulation from competition or segmented faculty labormarkets influence the racial composition of faculties,black faculty are more often found whereinstitutionalized discrimination may be checked by greaterformalization and black constituencies on campus.Consistent with statistical discrimination, blackfaculty are poorly represented at research-orientedinstitutions, even controlling for the scholarly reputationof doctoral credentials. 相似文献
30.
Intelligent use of the many diverse forms of data available on the Internet requires new tools for managing and manipulating
heterogeneous forms of information. This paper uses WHIRL, an extension of relational databases that can manipulate textual
data using statistical similarity measures developed by the information retrieval community. We show that although WHIRL is
designed for more general similarity-based reasoning tasks, it is competitive with mature systems designed explicitly for
inductive classification. In particular, WHIRL is well suited for combining different sources of knowledge in the classification
process. We show on a diverse set of tasks that the use of appropriate sets of unlabeled background knowledge often decreases
error rates, particularly if the number of examples or the size of the strings in the training set is small. This is especially
useful when labeling text is a labor-intensive job and when there is a large amount of information available about a particular
problem on the World Wide Web.
相似文献
Haym HirshEmail: |