全文获取类型
收费全文 | 1545篇 |
免费 | 42篇 |
国内免费 | 3篇 |
专业分类
教育 | 1151篇 |
科学研究 | 116篇 |
各国文化 | 30篇 |
体育 | 138篇 |
文化理论 | 20篇 |
信息传播 | 135篇 |
出版年
2022年 | 11篇 |
2021年 | 13篇 |
2020年 | 28篇 |
2019年 | 42篇 |
2018年 | 54篇 |
2017年 | 69篇 |
2016年 | 48篇 |
2015年 | 41篇 |
2014年 | 35篇 |
2013年 | 364篇 |
2012年 | 43篇 |
2011年 | 43篇 |
2010年 | 28篇 |
2009年 | 42篇 |
2008年 | 39篇 |
2007年 | 39篇 |
2006年 | 30篇 |
2005年 | 31篇 |
2004年 | 30篇 |
2003年 | 38篇 |
2002年 | 32篇 |
2001年 | 14篇 |
2000年 | 21篇 |
1999年 | 27篇 |
1998年 | 21篇 |
1997年 | 17篇 |
1996年 | 19篇 |
1995年 | 12篇 |
1994年 | 9篇 |
1993年 | 18篇 |
1992年 | 19篇 |
1991年 | 15篇 |
1990年 | 20篇 |
1989年 | 22篇 |
1988年 | 14篇 |
1987年 | 14篇 |
1986年 | 11篇 |
1985年 | 11篇 |
1984年 | 14篇 |
1983年 | 17篇 |
1982年 | 19篇 |
1981年 | 11篇 |
1980年 | 8篇 |
1979年 | 13篇 |
1978年 | 16篇 |
1977年 | 8篇 |
1976年 | 12篇 |
1975年 | 10篇 |
1970年 | 8篇 |
1964年 | 6篇 |
排序方式: 共有1590条查询结果,搜索用时 15 毫秒
131.
132.
Widely varying recommended reading lists for psychiatry residents were obtained from 140 AMA-approved training programs. Approximately 4,000 articles, 2,800 books, and 200 serials were listed. The number of recommendations for each book was counted, and a rank-order determined. A second rank-order was determined from the lists of those eighty-seven programs which indicated that their material covered the "basic" literature; a third rank-order was determined from the number of residents using the lists. All rank-orders agreed on the "most recommended" book and the first eighteen books; there was a 92 percent correlation through the first 453 books. One-third of the "basic" recommendations were for the first 104 books; one-third for the next 349 books, and one-third for the remaining 1,994 books. The subject matter of the first 104 books indicated that the currently most popular subjects in psychiatry are psychoanalytic theories of personality, schizophrenia, psychotherapy, and child psychiatry. A list of the 104 most recommended books is appended. 相似文献
133.
134.
135.
136.
137.
Philip A. E. Brey 《Ethics and Information Technology》2012,14(4):305-317
In this essay, a new approach to the ethics of emerging information technology will be presented, called anticipatory technology ethics (ATE). The ethics of emerging technology is the study of ethical issues at the R&D and introduction stage of technology development through anticipation of possible future devices, applications, and social consequences. In the essay, I will first locate emerging technology in the technology development cycle, after which I will consider ethical approaches to emerging technologies, as well as obstacles in developing such approaches. I will argue that any sound approach must centrally include futures studies of technology. I then present ATE and some applications of it to emerging information technologies. In ATE, ethical analysis is performed at three levels, the technology, artifact and application levels, and at each levels distinct types of ethical questions are asked. ATE analyses result in the identification and evaluation of a broad range of ethical issues that can be anticipated in relation to an emerging information technology. This ethical analysis can then be used for ethical recommendations for design or governance. 相似文献
138.
CR Duffy D Stewart F Pecoraro PE Riches D Farina A Macaluso 《Journal of sports sciences》2012,30(12):1311-1321
Abstract To investigate the effects of ageing on the neural control strategies governing sprint cycling on a friction-loaded cycle-ergometer, 10 older (aged 70-83yr) and 8 young (aged 19-35yr) healthy women completed seven 6-s all-out cycling trials against varying loads. Root mean square (RMS), median frequency and muscle fibre conduction velocity were determined from the vastus lateralis of the dominant limb during each pedal stroke. Peak power was 43% lower in the older group compared to the younger (p?0.001) and was accompanied by a significantly lower RMS (p?0.05). No differences were observed in the other electromyography (EMG) parameters between the groups (p?>?0.05). ΔRMS from the first to the sixth second during each trial was found to increase significantly with the development of power output in both groups (p?0.05). For the first time during an all-out 6-s cycle trial, it has been demonstrated that older women's lower mechanical power output was accompanied by a significantly lower RMS, which indicates a decline in either the number of active of motor units or a reduced discharge rate. Hence, changes in motor units can be regarded as a contributory factor to the decline of muscle power with advancing age. Overall, though, similar neural strategies are adopted in both younger and older populations. 相似文献
139.
In this study, we examined National Board certified physical education teachers' (NBCPETs) perceptions of change as a result of certification. Randomly selected NBCPETs (65; women = 53, men = 12) were interviewed. Analysis was done through the lens of Lawson's (1989) Model of the interactive factors Influencing workplace conditions for the Physical Education Teacher Several themes connected to teachers' views of themselves as NBCPETs surfaced. In particular more teaching reflection and a greater focus on student learning and assessment, including an increased emphasis on individualizing teaching were described. An elevation in their perceived status and credibility and expanded opportunities within the educational community also emerged. Alternatively, several NBCPETs explained that the certification process had little or no effect on their teaching 相似文献
140.
Woods A 《Endeavour》2012,36(1):14-22
There is a long history of concern in Britain for how animals are treated. Until the 1960s, these concerns were expressed largely in terms of cruelty or suffering, which was prevented through various acts of Parliament. Over the period 1964-71, amidst public debates about intensive farming, a new discourse of animal welfare emerged. To understand what welfare meant and how it became established as a term, a concept and a target of government regulation, it is necessary to examine farming politics and practices, the existing tradition of animal protection and attempts to rethink the nature of animal suffering. 相似文献