全文获取类型
收费全文 | 2034篇 |
免费 | 31篇 |
国内免费 | 1篇 |
专业分类
教育 | 1509篇 |
科学研究 | 103篇 |
各国文化 | 32篇 |
体育 | 264篇 |
综合类 | 1篇 |
文化理论 | 48篇 |
信息传播 | 109篇 |
出版年
2023年 | 22篇 |
2022年 | 31篇 |
2021年 | 56篇 |
2020年 | 91篇 |
2019年 | 145篇 |
2018年 | 187篇 |
2017年 | 173篇 |
2016年 | 158篇 |
2015年 | 96篇 |
2014年 | 106篇 |
2013年 | 470篇 |
2012年 | 79篇 |
2011年 | 55篇 |
2010年 | 46篇 |
2009年 | 41篇 |
2008年 | 35篇 |
2007年 | 30篇 |
2006年 | 31篇 |
2005年 | 19篇 |
2004年 | 23篇 |
2003年 | 14篇 |
2002年 | 22篇 |
2001年 | 12篇 |
2000年 | 11篇 |
1999年 | 9篇 |
1998年 | 11篇 |
1997年 | 5篇 |
1996年 | 11篇 |
1995年 | 6篇 |
1994年 | 6篇 |
1993年 | 8篇 |
1992年 | 6篇 |
1991年 | 7篇 |
1990年 | 9篇 |
1989年 | 5篇 |
1988年 | 3篇 |
1985年 | 2篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1977年 | 2篇 |
1975年 | 2篇 |
1973年 | 1篇 |
1970年 | 1篇 |
1969年 | 1篇 |
1966年 | 1篇 |
1964年 | 1篇 |
1963年 | 2篇 |
1962年 | 1篇 |
1960年 | 2篇 |
1959年 | 1篇 |
排序方式: 共有2066条查询结果,搜索用时 15 毫秒
31.
Pedro Gutiérrez Bueno wrote two editions of a chemistry textbook between 1788 and 1802. The paper offers a comparative view
of both editions taking into account Gutiérrez Bueno’s biography, his intended audience and the changes related to the so-called
chemical revolution. Some conclusions are at odds with common images about scientific revolutions and the role of textbooks
in science. The analysis aims to shed some light on the multiple historical forces shaping textbooks and the way in which
scientific change is assimilated by their writers.
This research was partially supported by the program BHA2002-04611-CO3-02 相似文献
32.
Patrícia Antunes 《Journal of Food Science Education》2016,15(2):51-55
We proposed in the Basic Microbiology Subject for food science and nutrition students, a “hands‐on” activity consisting on sampling student's hands for bacterial presence and identification. This is a project to be implemented in multiple laboratory classes throughout the semester, allowing students to learn, and apply general microbiology techniques in mixed or isolated cultures obtained from their own samples in parallel with those from the laboratory collection proposed in the microbiology syllabus (as aseptic technique, hands sampling, streaking for single‐colony isolation, culture medium analysis, bacterial morphology, and biochemical study, employ of dichotomous keys) This activity will allow them to understand the association between humans and microorganisms, to recognize the importance of personal hygiene (for example, hand‐washing), and to know how hands can be an important vehicle for bacterial spreading in surrounding environments (for example, kitchen, health‐care setting). The fact that the isolates for practical work were not only from laboratory collections, but also from the personal student's hands, keeps them interested in discover and study their own bacteria to know their main characteristics and the potential importance to human health, through spread of hazardous isolates. This project also potentially contributed for student's development of other skills such as autonomy and teamwork, planning and write, communication, and debate. 相似文献
33.
Antonio Gómez Skarmeta Pedro García López Jesús Egea Payá José Meseguer Navarro Tomás Jiménez García 《Academic Questions》1994,8(1):91-92
Books and articles of academic interest 相似文献
34.
In this work, we presented an analysis of the representation of the special relativity theory (SRT) in the most used texts
in high school, Polimodal level and university level in the teaching in the Argentine Republic, from a historic, epistemological
and didactic perspective. The results show that none of the analyzed texts would allow a contextualized approach on such theory. 相似文献
35.
This paper gives background information on early childhood services in Ireland and presents the results of a survey of the preschool experiences of 1065 children. The results of the survey suggest that the majority of children experienced some form of early childhood service before starting school. The most common service was a playgroup although a significant proportion of the children had experienced home‐based care with a relative or family day care provider. The implications of the findings for the development of a policy on early childhood services are discussed. 相似文献
36.
The AGIRE project, under the Edulab concept, aims to promote the adoption of innovative teaching practices. This paper reports the support strategies used to evaluate the teacher practices at the end of a teacher training course (TTC) and analyse its impact on teacher technology integration, using a design-based methodology. Teachers’ initial perception was gathered using an online questionnaire comprising ICT personal and professional competencies. The questionnaire results and the classroom observations showed that the majority of teachers were at the level of ICT adoption, before attending the TTC, reaching the adaptation level of integration of ICT, after the TTC. A variety of teaching strategies (flipped classroom, collaborative work, …) and technologies (interactive white boards, tablets, videos, …) were explored. The results sustain the thesis that, with proper support, ICT can be integrated in educational contexts in an innovative way and contribute to the development of teachers’ digital literacy. 相似文献
37.
Joaquín Martínez-Torregrosa Rafael López-Gay Albert Gras-Martí 《Science & Education》2006,15(5):447-462
Despite its frequent use, there is little understanding of the concept of differential among upper high school and undergraduate
students of physics. As a first step to identify the origin of this situation and to revert it, we have done a historic and
epistemological study aimed at clarifying the role and the meaning of the differential in physics and at improving curricular
and teaching models in the sense of Gilbert et al. (Gilbert J.K., Boulter C., & Rutherford, M.: 1998a, International Journal of Science Education 20(1), 83–97, Gilbert J.K., Boulter C., & Rutherford, M.: 1998b, International Journal of Science Education 20(2), 187–203). We describe the contributions of Leibniz and Cauchy and stress their shortcomings, which are overcome by the
alternative definition proposed by the French mathematician Fréchet, dating from early 20th century. As a result of this study,
we answer to some fundamental questions related to a proper understanding of the differential in physics education (for 17–19 years
old students). 相似文献
38.
This article examines how 31 triads of 6- to 10-year-old children from 3 cultural backgrounds organized their interactions while folding Origami figures. Triads of children whose families had immigrated to the United States from indigenous heritage regions of México (and whose mothers averaged only 7 grades of schooling) coordinated more often as an ensemble, whereas triads of European heritage U.S. children whose mothers had extensive schooling more often engaged dyadically or individually. When the European heritage children did engage as an ensemble, this often involved chatting rather than nonverbal conversation regarding folding, which was more common among the Mexican heritage children. Mexican heritage U.S. triads whose mothers had extensive schooling showed an intermediate pattern or resembled the European heritage children. 相似文献
39.
Ortiz R Jiménez JE García Miranda E Guzmán Rosquete R Hernández-Valle I Rodrigo M Estévez A Díaz A Hernández Expósito S 《Journal of learning disabilities》2007,40(1):80-92
The aims of this study were (a) to determine whether Spanish children with reading disabilities (RD) show a speech perception deficit and (b) to explore the locus and nature of this perceptive deficit. A group of 29 children with RD, 41 chronological age-matched controls, and 27 reading ability-matched younger controls were tested on tasks of speech perception. The effect of linguistic unit (word vs. syllable) and type of phonetic contrast (voicing, place and manner of articulation) were analyzed in terms of the number of errors and the response time. The results revealed a speech perception deficit in Spanish children with RD that was independent of the type of phonetic contrast and of linguistic unit. 相似文献
40.
Jon Zabala Borja González-Albo Ana García-García Aurora Garrido-Domínguez José Ignacio Vidal-Liy Luis R. Álvarez-Díez Soledad Hernando-Tundidor Yara Mostazo-Fernández Teresa Abejón 《Learned Publishing》2023,36(2):205-216
This article analyses the review, acceptance and publication dates of a sample of 21,890 articles from 326 Ibero-American scientific journals from all subject areas and countries included in the Latindex Catalogue 2.0 and published between 2018 and 2020 (freely available as an open access dataset). The aim is to discover evaluation and publication times. The evaluation process takes a median of 110 days, the publication process, a median of 82 days, and the whole process, a median of 224 days. Statistical differences are found according to periodicity, subject areas, countries, existence of a printed version and article type (Call for Papers or General articles). From the data we find that the delay in publication is longer than publishers themselves report to the DOAJ. STEM areas present the most similarity in publication patterns, having a higher number of evaluation days (Ed) than publication days (Pd); Arts and Humanities present the opposite pattern, with a higher Pd than Ed. In the case of Social Sciences, the times are similar. General articles and Call for Papers articles differ in terms of Ed, but not Pd, indicating that Call for Papers revisions are faster. 相似文献