全文获取类型
收费全文 | 24630篇 |
免费 | 304篇 |
国内免费 | 16篇 |
专业分类
教育 | 17534篇 |
科学研究 | 1956篇 |
各国文化 | 262篇 |
体育 | 2430篇 |
综合类 | 7篇 |
文化理论 | 221篇 |
信息传播 | 2540篇 |
出版年
2021年 | 249篇 |
2020年 | 376篇 |
2019年 | 584篇 |
2018年 | 791篇 |
2017年 | 716篇 |
2016年 | 706篇 |
2015年 | 444篇 |
2014年 | 570篇 |
2013年 | 4520篇 |
2012年 | 516篇 |
2011年 | 571篇 |
2010年 | 428篇 |
2009年 | 473篇 |
2008年 | 511篇 |
2007年 | 475篇 |
2006年 | 434篇 |
2005年 | 389篇 |
2004年 | 422篇 |
2003年 | 322篇 |
2002年 | 341篇 |
2001年 | 471篇 |
2000年 | 527篇 |
1999年 | 444篇 |
1998年 | 268篇 |
1997年 | 266篇 |
1996年 | 324篇 |
1995年 | 255篇 |
1994年 | 267篇 |
1993年 | 232篇 |
1992年 | 358篇 |
1991年 | 373篇 |
1990年 | 348篇 |
1989年 | 370篇 |
1988年 | 340篇 |
1987年 | 331篇 |
1986年 | 328篇 |
1985年 | 372篇 |
1984年 | 295篇 |
1983年 | 309篇 |
1982年 | 245篇 |
1981年 | 249篇 |
1980年 | 261篇 |
1979年 | 351篇 |
1978年 | 261篇 |
1977年 | 246篇 |
1976年 | 202篇 |
1975年 | 184篇 |
1974年 | 183篇 |
1973年 | 176篇 |
1971年 | 175篇 |
排序方式: 共有10000条查询结果,搜索用时 9 毫秒
141.
Meagan R. Talbott Gregory S. Young Jeff Munson Annette Estes Laurie A. Vismara Sally J. Rogers 《Child development》2020,91(3):743-753
In typical development, gestures precede and predict language development. This study examines the developmental sequence of expressive communication and relations between specific gestural and language milestones in toddlers with autism spectrum disorder (ASD), who demonstrate marked difficulty with gesture production and language. Communication skills across five stages (gestures, word approximations, first words, gesture-word combinations, and two-word combinations) were assessed monthly by blind raters for toddlers with ASD participating in an randomized control trial of parent-mediated treatment (N = 42, 12–30 months). Findings revealed that toddlers acquired skills following a reliable (vs. idiosyncratic) sequence and the majority of toddlers combined gestures with words before combining words in speech, but in contrast to the pattern observed in typical development, a significant subset acquired pointing after first words. 相似文献
142.
Georga J. Longhurst Danya M. Stone Kate Dulohery Deirdre Scully Thomas Campbell Claire F. Smith 《Anatomical sciences education》2020,13(3):301-311
The Covid-19 pandemic has driven the fastest changes to higher education across the globe, necessitated by social distancing measures preventing face-to-face teaching. This has led to an almost immediate switch to distance learning by higher education institutions. Anatomy faces some unique challenges. Intrinsically, anatomy is a three-dimensional subject that requires a sound understanding of the relationships between structures, often achieved by the study of human cadaveric material, models, and virtual resources. This study sought to identify the approaches taken in the United Kingdom and Republic of Ireland to deliver anatomical education through online means. Data were collected from 14 different universities in the United Kingdom and Republic of Ireland and compared adopting a thematic analysis approach. Once themes were generated, they were collectively brought together using a strength, weakness, opportunity, threat (SWOT) analysis. Key themes included the opportunity to develop new online resources and the chance to engage in new academic collaborations. Academics frequently mentioned the challenge that time constrains could place on the quality and effectiveness of these resources; especially as in many cases the aim of these resources was to compensate for a lack of exposure to cadaveric exposure. Comparisons of the actions taken by multiple higher education institutions reveal the ways that academics have tried to balance this demand. Discussions will facilitate decisions being made by higher education institutions regarding adapting the curriculum and assessment methods in anatomy. 相似文献
143.
Building from the concept ‘sponsors of literacy', the authors revisit three empirical studies to argue for mobilising notions of sponsorship beyond fixed conceptions of individual sponsors and literacy to lifewide perspectives that take into account sponsoring relations across the broader learning lives of youth. The authors take up the theoretical heuristic ‘sponsorscapes' as a lens for attending to the dynamically networked, reciprocal and human‐material dimensions of literacy practices. With cases drawn from across settings and research foci, including middle school students in a classroom setting, high school‐aged youth across contexts and a participant‐researcher's interactions with a college student, the authors argue that attending to sponsorscapes can contribute critical insight into the emergent, diverse and valued literacies and sponsorship thriving across lifewide learning pathways, while recognising learners' agentive roles in investing, resisting and sponsoring literacies. 相似文献
144.
145.
Catherine C. Chase Laura J. Malkiewich Alison Lee Stefan Slater Ahram Choi Chenmu Xing 《British journal of educational technology : journal of the Council for Educational Technology》2021,52(1):57-74
It is difficult to motivate learners to seek out and persist at challenging learning tasks where failure is likely. However, in game environments, people seem highly motivated to engage with challenges and respond productively to failure. Many typical game features purportedly enhance intrinsic motivation and self-efficacy, which should improve students’ reactions to challenge and failure, which should in turn enhance learning. An experimental study with early middle school students tested these assumptions by comparing a “Full” version of a typical, commercial programming game to a “Minimal” version of the same game where common game features such as narrative, performance metrics, high-quality graphics, and sound were removed. In contrast to our hypotheses, players of the Full Game were less likely to choose coding challenges, were less tolerant of coding failures and gained less coding knowledge. Intrinsic motivation and self-efficacy did not differ between conditions. Correlational analyses showed that failure tolerance and challenge seeking may critically affect learning from educational games. The current study offers an existence proof that some common game features can hinder players' failure tolerance, challenge-seeking and learning, in certain game contexts. Future research should isolate the effects of individual game features, test generalizability and explore which contextual variables influence the findings. 相似文献
146.
Emerging fathers experience a variety of stressors, including identity and role transitions, changes in their relationships, and challenges in developing caregiving skills. Increasing expectations for father involvement in childcare are emphasizing the importance of the father role, but social supports for new fathers remain scarce. Nineteen expectant and new fathers participated in a pilot 5-week group intervention aimed at improving stress coping and involvement attitudes using a combination of mindfulness practices and skill-building for parenting and partner communication. We administered surveys pre- and postintervention to assess efficacy in the areas of stress, depressive symptoms, father involvement attitudes, and mindfulness. Within-participant differences were compared across participants as well as examining individual reliable change. Results indicated initial reductions in stress and depressive symptoms and increases in the mindfulness constructs of nonjudgment and nonreactivity. No significant changes were found in father involvement attitudes. Perinatal intervention specific to fathers holds promise as an underexplored avenue for supporting families across the transition to parenthood. 相似文献
147.
Self- and peer-assessment are being used increasingly in higher education, to help assign grades to students' work and to help students to learn more effectively. However, in spite of this trend there is little in the published literature on how students view these methods. In this paper we present an analysis of the views of a large number of students (N = 233) who had just experienced self- and peer-feedback as part of one of their subjects. It is a rarely questioned commonplace in the literature that in order to gain benefit from peer and self-assessment schemes students first need training in the specific scheme being used; ideally they will play a role in devising the scheme. The intervention reported here, which involved a large (N = 233) group of students, included no such measures. The results show that students felt, nonetheless, that they benefited from the intervention. The results also present prima facie evidence that training or other measures to further involve the students in the peer and self-assessment scheme might be beneficial. Our analysis of students' views revealed eight general dimensions under which are grouped twenty higher order themes. The results both support and extend previous research and give a more detailed picture than previously available. The general dimensions found were: Difficult; Gained Better Understanding of Marking; Discomfort; Productive (including learning benefits and improved work); Problems with Implementation; Read Others' Work; Develop Empathy (with assessing staff); and, Motivation (especially motivation to impress peers). The practical implications of these findings are discussed. 相似文献
148.
Robert J. Sternberg 《High Ability Studies》2001,12(2):159-179
This article describes how giftedness can be viewed as developing expertise. The general conception of giftedness as developing expertise is outlined. Then research examples are given that, in conjunction, seem odd under traditional interpretations of abilities but that make sense as a whole in the context of the developing expertise model. It is concluded that this new model offers potential for better understanding the nature of giftedness. 相似文献
149.
150.
Elvira L. Arellano Tessie L. Barcenal Purita P. Bilbao Merilin A. Castellano Sharon Nichols Deborah J. Tippins 《科学教学研究杂志》2001,38(5):502-528
The purpose of this study was to investigate the potential for using case‐based pedagogy as a context for collaborative inquiry into the teaching and learning of elementary science. The context for this study was the elementary science teacher preparation program at West Visayas State University on the the island of Panay in Iloilo City, the Philippines. In this context, triple linguistic conventions involving the interactions of the local Ilonggo dialect, the national language of Philipino (predominantly Tagalog) and English create unique challenges for science teachers. Participants in the study included six elementary student teachers, their respective critic teachers and a research team composed of four Filipino and two U.S. science teacher educators. Two teacher‐generated case narratives serve as the centerpiece for deliberation, around which we highlight key tensions that reflect both the struggles and positive aspects of teacher learning that took place. Theoretical perspectives drawn from assumptions underlying the use of case‐based pedagogy and scholarship surrounding the community metaphor as a referent for science education curriculum inquiry influenced our understanding of tensions at the intersection of re‐presentation of science, authority of knowledge, and professional practice, at the intersection of not shared language, explicit moral codes, and indigenization, and at the intersection of identity and dilemmas in science teaching. Implications of this study are discussed with respect to the building of science teacher learning communities in both local and global contexts of reform. © 2001 John Wiley & Sons, Inc. J Res Sci Teach 38: 502–528, 2001 相似文献