全文获取类型
收费全文 | 825篇 |
免费 | 13篇 |
国内免费 | 11篇 |
专业分类
教育 | 579篇 |
科学研究 | 109篇 |
各国文化 | 9篇 |
体育 | 51篇 |
综合类 | 31篇 |
文化理论 | 5篇 |
信息传播 | 65篇 |
出版年
2024年 | 1篇 |
2023年 | 6篇 |
2022年 | 6篇 |
2021年 | 16篇 |
2020年 | 19篇 |
2019年 | 10篇 |
2018年 | 25篇 |
2017年 | 29篇 |
2016年 | 31篇 |
2015年 | 33篇 |
2014年 | 46篇 |
2013年 | 92篇 |
2012年 | 52篇 |
2011年 | 46篇 |
2010年 | 46篇 |
2009年 | 48篇 |
2008年 | 38篇 |
2007年 | 45篇 |
2006年 | 34篇 |
2005年 | 29篇 |
2004年 | 28篇 |
2003年 | 21篇 |
2002年 | 15篇 |
2001年 | 13篇 |
2000年 | 12篇 |
1999年 | 17篇 |
1998年 | 7篇 |
1997年 | 15篇 |
1996年 | 15篇 |
1995年 | 7篇 |
1994年 | 6篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1991年 | 3篇 |
1990年 | 5篇 |
1989年 | 1篇 |
1988年 | 3篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1985年 | 5篇 |
1984年 | 3篇 |
1983年 | 2篇 |
1980年 | 1篇 |
1978年 | 3篇 |
1977年 | 1篇 |
1975年 | 1篇 |
1973年 | 1篇 |
1968年 | 1篇 |
排序方式: 共有849条查询结果,搜索用时 15 毫秒
31.
重大研究计划“非常规突发事件应急管理研究”的科学背景、目标与组织管理 总被引:13,自引:0,他引:13
近年来,非常规突发事件的发生频率不断增加。为提高我国政府和社会对非常规突发事件的应急管理能力,推进我国应急管理科学的发展,国家自然科学基金委员会于2008年启动实施了“非常规突发事件应急管理研究”重大研究计划。本文介绍了该重大研究计划的现实需求、科学背景,及其研究目标和主要内容,提出了组织管理工作的一些思路和安排,以便有关政府组织、学者和公众更好地了解和参与重大研究计划,促使研究工作和成果为我国应急管理工作提供有效科学支撑。 相似文献
32.
[目的/意义]旨在为提升政策文本的自动化处理程度提供参考。[方法/过程]在梳理已有政策本体及其构建方式基础上,提出由词汇语义主导的自下而上的本体构建方法,运用本体构建工具Protégé5.5.0构建科技创新政策文本本体,对部分政策内容进行标注并可视化。[结果/结论]该本体适用于科技创新政策文本的结构化语义抽取,能够在一定程度上揭示科技创新政策的结构化语义特征。 相似文献
33.
Martončik Marcel Kačmárová Monika Hruščová Eva Magáčová Žilková Ivana Kravcová Michaela 《International Journal for Educational and Vocational Guidance》2020,20(3):543-565
The underlying calculus assumption of Holland’s theory was tested in two samples of primary school students (N1 = 400 and N2 = 250) with an average age of 13.86 and 14.14 years, respectively. Both exploratory and confirmatory multidimensional scaling and Hubert and Arabie’s randomization test of hypothesized order relations were calculated. The circular spatial arrangement of RIASEC types was not confirmed in either of the two samples. The study discusses possible causes of the inappropriateness of using Holland’s model in an adolescent sample.
相似文献34.
BACKGROUND: Abuse and neglect have been shown to influence the mental and physical health of children; however, few studies have examined whether childhood victimization leads to an increased risk of early death. PURPOSE: This paper compares mortality data and examines cause of death for a sample of 908 abused and/or neglected individuals and 667 matched controls who were followed up into young adulthood. METHODS: Using data from a prospective cohort design study, a large group of children with substantiated cases of abuse (physical and sexual) and/or neglect approximately 25 years ago were matched with a control group of children and both groups were followed up into adulthood. The National Death Index was searched twice and official death certificates were collected for most individuals who had died. RESULTS: Surprisingly, there were no significant differences in rates of mortality for the two groups (abuse and neglect = 3.5%, controls = 3.0%). Furthermore, victims of child abuse and neglect were not more likely to experience a violent death. CONCLUSIONS: Our results do not provide support for a heightened rate of early death in abused and neglected children followed up into young adulthood. Limitations of the study are discussed as well as potential reasons for these unexpected findings. 相似文献
35.
36.
Cathy A. Toll 《Clearing house (Menasha, Wis.)》2018,91(1):14-20
Literacy coaches are most successful when they: develop strong, trusting relationships; provide clarity about their roles; communicate well; spend much of their time in coaching conversations; and monitor their perspectives about their work and those with whom they work. However, challenges still persist for literacy coaches, particularly in relation to administrators' understanding of literacy coaching, training for literacy coaches, and the amount of time allocated for literacy coaching. This article describes each of these successful practices and each of these challenges, based upon the author's experience over more than 12 years as an international consultant on literacy coaching and supported by research from the literature on coaching, with the goals of summarizing current knowledge, providing practical suggestions for improvement, and encouraging forward movement in the field of coaching. 相似文献
37.
学位论文CNMARC格式著录探讨 总被引:6,自引:0,他引:6
本文对学位论文的著录原则及学位论文的CNMARC著录进行了探讨,提出了学位论文CNMARC字段的具体著录方法。 相似文献
38.
Cathy Devine 《Sport, Education and Society》2016,21(8):1193-1212
Universalist claims are often made about sport which is, as a consequence, increasingly written into national and international policy as an entitlement of citizenship or even human right. Further, in most countries physical education (PE) is a compulsory component of children's education, and sport is seen as central to this. Consequently, in the interests of justice sport must aspire to be egalitarian, that is, relevant to and meaningful for boys and men, and girls and women. In this context three fundamental questions are asked in relation to sport: (1) Do all citizens want to participate? (2) Who counts as a citizen? and (3) What are justice and equality? Feminist political and citizenship theory particularly the work of Pateman, Lister and Fraser is used to explore these questions and interrogate the ‘who’ of citizenship and the ‘what’ of justice in relation to framing sport policy in Europe and the UK. It is argued that notwithstanding the extensive use of the Council of Europe definition of sport,1 and despite or even because of the widespread adoption of the language of gender equality and gender mainstreaming, although formal sport citizenship rights might be accorded to all individuals and regarded as gender neutral, this masks a discourse of androcentric sport citizenship. This has captured European and UK sport policy and provision and is hindering further progress towards gender justice in sport and therefore PE. Given the universal and compulsory aspirations of sport particularly within PE, gender justice should be conceptualised not only as cultural recognition, political representation and economic redistribution within the normalised frame of competitive performance sport or ‘sport for sports sake’; but also as a critical meta-political remapping and reframing of sport as sport and physical recreation or ‘sport for all’. 相似文献
39.
本文报道了东亚植物区系中双子叶植物9个种的体细胞染色体新计数,其中6个是属的新计数,并对这些资料与有关的科或属在系统学和进化上的意义作了讨论。 相似文献
40.
提出一种人脸识别方法用于解决姿态变化对识别准确率的影响。首先检测人脸图像的SIFT特征,然后根据SIFT特征计算人脸图像间的多示例距离;基于此多示例距离,用保局投影将人脸图像映射至流形空间,最后在流形空间中采用K近邻方法进行人脸识别。该方法有三个特点:(1)采用SIFT特征减小了未知姿态对识别准确率的影响;(2)通过保局投影将特征变换到流形空间一个点,避免了复杂的SIFT特征匹配策略;(3)借助流形方法滤除高维特征中的噪声。实验结果表明与已有方法相比,在人脸姿态不确定的情况下,该方法能提供较为理想的识别准确率。 相似文献