全文获取类型
收费全文 | 4629篇 |
免费 | 49篇 |
专业分类
教育 | 3352篇 |
科学研究 | 609篇 |
各国文化 | 24篇 |
体育 | 191篇 |
综合类 | 7篇 |
文化理论 | 87篇 |
信息传播 | 408篇 |
出版年
2023年 | 20篇 |
2022年 | 35篇 |
2021年 | 45篇 |
2020年 | 63篇 |
2019年 | 108篇 |
2018年 | 185篇 |
2017年 | 212篇 |
2016年 | 265篇 |
2015年 | 189篇 |
2014年 | 149篇 |
2013年 | 387篇 |
2012年 | 231篇 |
2011年 | 224篇 |
2010年 | 159篇 |
2009年 | 67篇 |
2008年 | 122篇 |
2007年 | 104篇 |
2006年 | 69篇 |
2005年 | 708篇 |
2004年 | 504篇 |
2003年 | 323篇 |
2002年 | 166篇 |
2001年 | 78篇 |
2000年 | 55篇 |
1999年 | 38篇 |
1998年 | 20篇 |
1997年 | 12篇 |
1996年 | 19篇 |
1995年 | 10篇 |
1994年 | 11篇 |
1993年 | 10篇 |
1992年 | 8篇 |
1991年 | 13篇 |
1990年 | 11篇 |
1989年 | 10篇 |
1988年 | 10篇 |
1987年 | 7篇 |
1986年 | 6篇 |
1985年 | 2篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1980年 | 5篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1976年 | 4篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1973年 | 2篇 |
1972年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有4678条查询结果,搜索用时 15 毫秒
991.
João Elias Dias Nunes Heitor Santos Cunha Zulmária Rezende Freitas Ana Maria Caixeta Nogueira Ana Raimunda Dâmaso Foued Salmen Espindola 《Journal of sports sciences》2016,34(10):945-950
The objective of this study is to evaluate the effect of interdisciplinary therapy in the parameters of the oxidative stress and the anti-inflammatory responses of obese adolescents. We selected 57 participants, who were randomly divided into 2 groups: interdisciplinary therapy group and a control group. After 6 months of intervention, 17 participants of the interdisciplinary therapy group and 8 of the control group returned for re-evaluation. The interdisciplinary therapy group participated in a treatment with 4 weekly sessions of exercise, a weekly group therapy session and a weekly nutritional education session. Blood parameters of oxidative stress and anti-inflammatory response were evaluated. The results demonstrated that there were significant increases in the interdisciplinary therapy group for superoxide dismutase activity (6.56 ± 3.22 to 11.40 ± 7.49) and ferric-reducing antioxidant potential concentration (532.91 ± 106.48 to 573.25 ± 112.57), although adiponectin levels did not reduce (40.9 ± 29.34 to 49.05 ± 41.22). A significant decrease in nitrite levels was also found (14.23 ± 8.48 to 11.45 ± 6.05). In the control group, significant reduction was found in adiponectin (31.56 ± 18.88 to 18.01 ± 11.66). This study suggests that interdisciplinary therapy for 6 months was effective in improving the anti-inflammatory responses and the antioxidant defences in obese adolescents. 相似文献
992.
993.
A Review of the Research on Internet Addiction 总被引:9,自引:0,他引:9
Chien?ChouEmail author Linda?Condron John?C.?Belland 《Educational Psychology Review》2005,17(4):363-388
Research indicates that maladaptive patterns of Internet use constitute behavioral addiction. This article explores the research
on the social effects of Internet addiction. There are four major sections. The Introduction section overviews the field and
introduces definitions, terminology, and assessments. The second section reviews research findings and focuses on several
key factors related to Internet addiction, including Internet use and time, identifiable problems, gender differences, psychosocial
variables, and computer attitudes. The third section considers the addictive potential of the Internet in terms of the Internet,
its users, and the interaction of the two. The fourth section addresses current and projected treatments of Internet addiction,
suggests future research agendas, and provides implications for educational psychologists. 相似文献
994.
Solvejg?JobstEmail author 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2005,51(5-6):385-402
EUROPEAN CONSCIOUSNESS: TOWARDS DEFINING A COMPLEX CONCEPT AND ITS EDUCATIONAL SIGNIFICANCE – The present study aims at a definition of ‘European consciousness’. In particular, it draws on Henri Tajfel’s theory of social identity as well as Roland Wakenhut’s and Jutta Gallenmüller’s moral determination of national consciousness. European consciousness is then defined as a sense of belonging which, depending on certain identification structures and social perspectives, can take such distinct forms of moral consciousness as ‘Eurocentrism’, ‘European patriotism’, or ‘reflective European consciousness’. Making reference to Wolfgang Klafki’s notion of general education, it is finally argued that the emancipatory contribution of schooling to greater European integration consists in mediating precisely this last way of thinking. 相似文献
995.
Maria Balarin 《Globalisation, Societies & Education》2008,6(2):163-178
The present article explores the making of education policies in weak states, particularly in the context of developing nations and in view of the increasing influence of international organisations, such as the World Bank, in definition of education reform agendas. The discussion seeks to contribute to the theory of weak states by highlighting the importance of political processes of interest articulation and mobilisation, and by suggesting that state weakness can vary internally from one policy to another. It does so with reference to education and to a study of radical discontinuity in Peruvian education policies. 相似文献
996.
Recent research on metacognition points out the crucial role of on-line methods when endeavouring to conduct valid assessments
of metacognitive skills. Presently, different on-line methods are used, however, it is still a question of research whether
and how they affect students’ learning behaviour and learning outcome. Thus, the aim of this study is to quasi-experimentally
analyse the effects of two on-line verbalisation methods on learning performance. By means of the thinking-aloud method, students
in one experimental group (n = 24) were instructed to read and think aloud during learning. With the reflection when prompted method, students of another
experimental group (n = 24) were prompted at each navigational step to reflect on the reasons why they chose specific information. Students in
the control group (n = 22) learned without being instructed to verbalise. All three groups were treated identically except for the different use
of verbalisation assessment methods. The students’ task was to learn the concepts and principles of operant conditioning presented
in a hypermedium within 30 min. The students’ learning sessions were videotaped and learning performance was obtained immediately
afterwards. Based on Ericsson and Simon’s (Protocol analysis: Verbal reports as data, MIT, Cambridge, 1993) model, no performance differences between the thinking aloud and the control group were hypothesised.
However, prompting students for metacognitive reflection should affect learning performance positively, which is confirmed
by the results only in tendency for transfer performance. Implications for on-line assessment methods of metacognitive skill
will be discussed. 相似文献
997.
When software is written and then utilized in complex computer systems, problems often occur. Sometimes these problems cause a system to malfunction, and in some instances such malfunctions cause harm. Should any of the persons involved in creating the software be blamed and punished when a computer system failure leads to persons being harmed? In order to decide whether such blame and punishment are appropriate, we need to first consider if the people are “morally responsible”. Should any of the people involved in creating the software be held morally responsible, as individuals, for the harm caused by a computer system failure?This article provides one view of moral responsibility and then discusses some barriers to holding people morally responsible. Next, it provides information about the Therac-25, a computer-controlled medical linear accelerator, and its computer systems failures that led to deaths and injuries. Finally it investigates whether two key people involved in the Therac-25 case could reasonably be considered to have some degree of moral responsibility for the deaths and injuries. The conclusions about whether or not these people were morally responsible necessarily rest upon a certain amount of speculation about what they knew and what they did. These limitations, however, should not cause us to conclude that discussions of moral responsibility are fruitless. In some cases, determinations of moral responsibility may be made and in others the investigation is still worthwhile, as the article demonstrates. 相似文献
998.
The objective was to examine the impact of different types of accommodations on performance in content tests such as mathematics. The meta‐analysis included 14 U.S. studies that randomly assigned school‐aged English language learners (ELLs) to test accommodation versus control conditions or used repeated measures in counter‐balanced order. Individual effect sizes (Glass's d) were calculated for 50 groups of ELLs and 32 groups of non‐ELLs. Individual effect sizes for English language and native language accommodations were classified into groups according to type of accommodation and timing conditions. Means and standard errors were calculated for each category. The findings suggest that accommodations that require extra printed materials need generous time limits for both the accommodated and unaccommodated groups to ensure that they are effective, equivalent in scale to the original test, and therefore more valid owing to reduced construct‐irrelevant variance. Computer‐administered glossaries were effective even when time limits were restricted. Although the Plain English accommodation had very small average effect sizes, inspection of individual effect sizes suggests that it may be much more effective for ELLs at intermediate levels of English language proficiency. For Spanish‐speaking students with low proficiency in English, the Spanish test version had the highest individual effect size (+1.45). 相似文献
999.
En este trabajo se parte del supuesto de que el uso de recursos gráficos, además de ser positivo, está creciendo continuamente en la enseñanza. Con el fin de facilitar la utilización de recursos gráficos en la realización de transparencias, mapas mentales, mapas conceptuales, resúmenes, etc., se proponen unas reglas básicas que constituyen en sí mismas un lenguaje gráfico 相似文献
1000.