全文获取类型
收费全文 | 5992篇 |
免费 | 57篇 |
国内免费 | 5篇 |
专业分类
教育 | 4435篇 |
科学研究 | 363篇 |
各国文化 | 115篇 |
体育 | 376篇 |
综合类 | 4篇 |
文化理论 | 63篇 |
信息传播 | 698篇 |
出版年
2021年 | 39篇 |
2020年 | 56篇 |
2019年 | 101篇 |
2018年 | 106篇 |
2017年 | 163篇 |
2016年 | 141篇 |
2015年 | 104篇 |
2014年 | 113篇 |
2013年 | 1483篇 |
2012年 | 121篇 |
2011年 | 111篇 |
2010年 | 104篇 |
2009年 | 123篇 |
2008年 | 143篇 |
2007年 | 130篇 |
2006年 | 118篇 |
2005年 | 115篇 |
2004年 | 116篇 |
2003年 | 109篇 |
2002年 | 100篇 |
2001年 | 67篇 |
2000年 | 83篇 |
1999年 | 63篇 |
1998年 | 69篇 |
1997年 | 70篇 |
1996年 | 76篇 |
1995年 | 71篇 |
1994年 | 77篇 |
1993年 | 74篇 |
1992年 | 70篇 |
1991年 | 79篇 |
1990年 | 82篇 |
1989年 | 77篇 |
1988年 | 70篇 |
1987年 | 61篇 |
1986年 | 72篇 |
1985年 | 58篇 |
1984年 | 62篇 |
1983年 | 89篇 |
1982年 | 61篇 |
1981年 | 60篇 |
1980年 | 69篇 |
1979年 | 59篇 |
1978年 | 80篇 |
1977年 | 64篇 |
1976年 | 49篇 |
1975年 | 51篇 |
1973年 | 46篇 |
1970年 | 51篇 |
1966年 | 41篇 |
排序方式: 共有6054条查询结果,搜索用时 15 毫秒
81.
Schley S Walter GG Weathers RR Hemmeter J Hennessey JC Burkhauser RV 《Journal of deaf studies and deaf education》2011,16(4):524-536
This article examines the effect that postsecondary education has on earnings and the duration of time spent in the Social Security disability programs for young persons who are deaf or hard of hearing. Our hypothesis is that investments in postsecondary training increase the likelihood of employment for persons who are deaf or hard of hearing and thus reduce dependency on disability-related income support programs. A longitudinal data set based upon records from the National Technical Institute for the Deaf and Social Security administrative records is used for this analysis. We find that those who graduate, even those who graduate with vocational degrees, experience significant earnings benefits and reductions in the duration of time spent on federal disability programs when compared with those who do not graduate with a degree. This finding suggests that reductions in the duration of time spent on Social Security programs are not limited to those with the highest level of scholastic aptitude and that investments in post-secondary education can benefit a broad group of deaf and hard-of-hearing persons. In addition, the data show that individuals who attend college, but withdraw before graduation, fair no better economically than individuals who never attended college. 相似文献
82.
OBJECTIVE: This study examined specific aspects of child sexual abuse in relation to symptom severity among hospitalized patients diagnosed with bulimia nervosa. METHOD: Participants were 45 hospitalized bulimic women who reported a history of child sexual abuse. Structured interviews were conducted in order to obtain detailed information regarding specific features of the abusive event(s). Participants also completed instruments that measured depression and eating pathology. RESULTS: There were no significant differences in severity of depression or eating disturbance among women reporting differing abusive experiences including intrafamilial versus extrafamilial abuse, abuse with or without the use of physical force, one versus multiple incidents, early abuse versus abuse occurring after age 14, contact versus noncontact abuse, disclosed versus undisclosed, and combined physical/sexual abuse versus sexual abuse alone. CONCLUSION: The specific characteristics of child sexual abuse are not related to the level of symptomatology for hospitalized bulimic patients. This study suggests that differences in the nature of the abuse may not be as important as the fact that the abuse occurred in the first place. 相似文献
83.
Anthony A. Wright Robert G. Cook Jacquelyne J. Rivera Stephen F. Sands Juan D. Delius 《Learning & behavior》1988,16(4):436-444
Pigeons were trained to match-to-sample with several new methodologies: a large number of stimuli, computer-drawn color picture stimuli, responses monitored by a computer touch screen, stimuli presented horizontally from the floor, and grain reinforcement delivered onto the picture stimuli. Following acquisition, matching-to-sample concept learning was assessed by transfer to novel stimuli on the first exposure to pairs of novel stimuli. One group (trial-unique), trained with 152 different pictures presented once daily, showed excellent transfer (80% correct). Transfer and baseline performances were equivalent, indicating that the matching-to-sample concept had been learned. A second group (2-stimulus), trained with only two different pictures, showed no evidence of transfer. These results are discussed in terms of the effect of numbers of exemplars on previous failures to find concept learning in pigeons, and the implications of the positive finding from this experiment on abstract concept learning and evolutionary cognitive development. 相似文献
84.
Technology is a dominant mediating factor impacting on current human behaviour and social change, which both acts on and is acted upon by other phenomena. This changing social landscape, along with new expectations and requirements, drives our educational priorities and curriculum agenda. There is no denying the prevalence of technology found in the statements and guidelines of the national Australian Curriculum. Further, the National Review of School Music Education identified the importance of technology in school music education in 2005. The curriculum guidelines illustrate an understanding of technology in Music and the Arts that is both vague and limiting. In 2015 we are at a point of curriculum stasis, an equilibrium that highlights a disconnect between music, technology and Australian music education. This article investigates current secondary school Years 7–10 (ages 11–15 years) Music and Arts curriculum statements concerning the use of technology and compares this to the general capability information and computer technology (ICT) curricula. There is wide recognition that digital technology is essential in teaching and learning, but this is not reflected in contemporary Australian Arts and Music curricula. 相似文献
85.
The present experiment determined whether associative strength based upon 15 CS-US pairings at various interstimulus intervals (ISIs) could survive shifts of the ISI to influence the subsequent acquisition of the nictitating membrane (NM) CR. The choice of 15 preshift pairings was based upon previous work, which had shown that this training level produced substantial associative strength without NM CR acquisition. Consequently, this experiment, by shifting the ISI before the beginning of CR acquisition, served as an extension to traditional ISI-shift studies that have imposed the manipulation after CR acquisition. The findings of the experiment indicated that 15 preshift pairings in Stage 1 at ISIs from 250 to 4,000 msec were as effective as 15 pairings at a 500-msec ISI in determining the number of trials to the first NM CR in Stage 2 in which the training ISI was 500 msec. Moreover, 15 pairings in Stage 1 at ISIs from 250 to 2,000 msec were equivalent to 15 pairings at 500 msec in controlling the number of trials to 10 successive NM CRs in Stage 2. These outcomes demonstrate that, within a large ISI range, the associative strength based upon relatively few pairings is preserved despite various shifts of the ISI. Therefore, these results suggest that the reductions in CR performance, which have been consistently observed in traditional studies following ISI shifts, are not due to the loss of associative strength. 相似文献
86.
87.
88.
Claire E. Crawford 《教育政策杂志》2019,34(3):423-444
ABSTRACTThis paper challenges the notion that quantitative data – as a numeric truth – exist independent of a nation’s political and racial landscape. Utilising large-scale national attainment data, the analysis challenges the belief that ‘White working class’ children in England, especially boys, are ‘the new oppressed’ – as a former equality adviser has publicly claimed. The analysis applies Quantitative Critical Race Theory, or ‘QuantCrit’, an emerging quantitative sub-field of Critical Race Theory in education. The paper argues that far from being ‘oppressed’, White boys continue to enjoy achievement advantages over numerous minoritised groups; especially their peers of Black Caribbean ethnic origin. Additionally, the analysis uniquely exposes racialised trends of ‘equivalency’ in core subject qualifications, whereby minority ethnic children are over-represented in certain lower-status qualifications that are counted as equivalent in education statistics but not in the real world labour market. The analysis concludes that knowing misrepresentations of quantitative data are at the heart of an institutional process through which race and racism are produced, legitimised and perpetuated in education. 相似文献
89.
The genetic and environmental etiologies of diverse aspects of language ability and disability, including articulation, phonology, grammar, vocabulary, and verbal memory, were investigated in a U.K. sample of 787 pairs of 4.5-year-old same-sex and opposite-sex twins. Moderate genetic influence was found for all aspects of language in the normal range. A similar pattern was found at the low end of the distribution with the exception of two receptive measures. Environmental influence was mainly due to nonshared factors, unique to the individual, with little influence from shared environment for most measures. Genetic and environmental influences on language ability and disability are quantitatively and qualitatively similar for males and females. 相似文献
90.