全文获取类型
收费全文 | 2130篇 |
免费 | 22篇 |
国内免费 | 4篇 |
专业分类
教育 | 1560篇 |
科学研究 | 195篇 |
各国文化 | 21篇 |
体育 | 181篇 |
综合类 | 12篇 |
文化理论 | 38篇 |
信息传播 | 149篇 |
出版年
2023年 | 6篇 |
2022年 | 30篇 |
2021年 | 47篇 |
2020年 | 56篇 |
2019年 | 96篇 |
2018年 | 129篇 |
2017年 | 125篇 |
2016年 | 91篇 |
2015年 | 64篇 |
2014年 | 81篇 |
2013年 | 329篇 |
2012年 | 73篇 |
2011年 | 65篇 |
2010年 | 73篇 |
2009年 | 46篇 |
2008年 | 52篇 |
2007年 | 50篇 |
2006年 | 46篇 |
2005年 | 76篇 |
2004年 | 75篇 |
2003年 | 98篇 |
2002年 | 74篇 |
2001年 | 65篇 |
2000年 | 38篇 |
1999年 | 22篇 |
1998年 | 10篇 |
1997年 | 6篇 |
1996年 | 9篇 |
1995年 | 16篇 |
1994年 | 10篇 |
1993年 | 7篇 |
1992年 | 7篇 |
1991年 | 13篇 |
1990年 | 9篇 |
1989年 | 13篇 |
1986年 | 5篇 |
1985年 | 7篇 |
1984年 | 4篇 |
1983年 | 4篇 |
1982年 | 8篇 |
1981年 | 6篇 |
1980年 | 7篇 |
1978年 | 6篇 |
1977年 | 7篇 |
1975年 | 4篇 |
1974年 | 8篇 |
1973年 | 6篇 |
1967年 | 4篇 |
1966年 | 6篇 |
1963年 | 6篇 |
排序方式: 共有2156条查询结果,搜索用时 0 毫秒
141.
142.
143.
Isabela Cabral Félix de Sousa 《Cultural Studies of Science Education》2013,8(1):193-213
The aim of this research is to understand how former students view their professional and academic paths after taking part in a specific scientific nonformal educational initiative during high school. This program is called Vocational Scientific Program (Provoc) and is carried out in the Oswald Cruz Foundation (Fiocruz), Rio de Janeiro, Brazil. This institution has for over 100 years played a pioneer role in public health research in the country. This institution has many graduate programs and a high school dedicated to training students in health issues. Provoc was originated in this school and has been part of it for the last 25 years. Since its beginning, this program has been characterized by a significant predominance of women which relates to the female predominance of professionals in this institution working in the traditional areas of Fiocruz, which are Biology, Medicine, Public Health, Humanities and Social Sciences. This study was qualitative in nature and involved observations and 34 individual interviews, which followed a semi structured questionnaire, designed for this research. The results indicate that the majority of participants see their program participation experiences as an asset in their academic and professional careers. Many describe feeling empowered by presenting their work in seminars and a few by writing a research article. Many former students also testified to the establishment of social long lasting relationships in the research work environment. And finally, the interviews reveal a few moments and the factors involved in the selection of a profession by youth. 相似文献
144.
Management literature has identified high-skilled human capital as a crucial dimension of innovation processes at the firm level. In this study, we introduce an alternative view of human capital based on the tasks that firms’ workers perform. We propose a measure of cognitive analytical and interpersonal tasks: the degree of abstractism. We argue that the level of abstractism of a firm has an effect on a firm's propensity to innovate and on its product innovation performance. We hypothesize that while the degree of abstractism has a linear positive relationship with the propensity to innovate, the relationship between abstractism and product innovation performance follows an inverted u-shaped relationship. We find partial support to our hypotheses using data from more than six thousand Portuguese firms. We discuss how these results change our understanding of the relationship between human capital and innovation at the firm level. 相似文献
145.
146.
147.
148.
149.
150.