全文获取类型
收费全文 | 639篇 |
免费 | 8篇 |
专业分类
教育 | 497篇 |
科学研究 | 17篇 |
各国文化 | 13篇 |
体育 | 42篇 |
文化理论 | 7篇 |
信息传播 | 71篇 |
出版年
2023年 | 2篇 |
2022年 | 6篇 |
2021年 | 9篇 |
2020年 | 8篇 |
2019年 | 21篇 |
2018年 | 30篇 |
2017年 | 37篇 |
2016年 | 36篇 |
2015年 | 14篇 |
2014年 | 27篇 |
2013年 | 141篇 |
2012年 | 23篇 |
2011年 | 16篇 |
2010年 | 19篇 |
2009年 | 17篇 |
2008年 | 11篇 |
2007年 | 16篇 |
2006年 | 11篇 |
2005年 | 11篇 |
2004年 | 11篇 |
2003年 | 9篇 |
2002年 | 8篇 |
2001年 | 4篇 |
2000年 | 12篇 |
1999年 | 15篇 |
1998年 | 18篇 |
1997年 | 8篇 |
1996年 | 5篇 |
1995年 | 5篇 |
1994年 | 10篇 |
1993年 | 8篇 |
1992年 | 3篇 |
1991年 | 7篇 |
1990年 | 4篇 |
1989年 | 5篇 |
1987年 | 2篇 |
1986年 | 5篇 |
1985年 | 3篇 |
1984年 | 2篇 |
1982年 | 2篇 |
1981年 | 3篇 |
1980年 | 3篇 |
1979年 | 6篇 |
1976年 | 5篇 |
1973年 | 3篇 |
1972年 | 2篇 |
1971年 | 4篇 |
1970年 | 2篇 |
1964年 | 2篇 |
1907年 | 2篇 |
排序方式: 共有647条查询结果,搜索用时 31 毫秒
51.
ABSTRACTThis article examines the role that business librarians can play in conveying the importance of thorough patent research in the start-up life cycle. It provides a summary of the components of the start-up life cycle and due diligence research as it pertains to entrepreneurs and venture capitalists. An overview of patent research resources and locations is provided, with particular focus on PatentsView, a web-based patent data visualization and analysis tool. 相似文献
52.
ABSTRACTThis article describes a program session about licensing electronic resources. The speakers discussed a range of licenses in the current electronic resources landscape and described current trends in the negotiation and management of licenses. They also explored the impact of workflow design on the accessibility of electronic resources at any institution. 相似文献
53.
In two experiments, saccharin (CS) and lithium chloride (US) were paired in a context consisting of specific visual, auditory, tactual, and olfactory cues. The saccharin aversion was then extinguished in a context free from conditioning-context cues. Later, saccharin preference tests were given in the presence and absence of these cues. The results indicated that the background cues of the conditioning trial controlled the amount of saccharin drunk on extinction trials, and, furthermore, that extinction of the taste aversion was context specific; i.e., groups given extinction trials in a different (from conditioning) context retained their saccharin aversion in the conditioning context only. The results indicate an important role played by the exteroceptive context in taste-aversion conditioning. 相似文献
54.
Teachers are more likely to be found in rural communities and low-wage metropolitan areas than are college-educated workers in other occupations. This analysis explores the extent to which the geographic distribution of teachers explains the relatively low average wage found in other studies. The analysis suggests that excluding geographic indicators from the analysis downwardly biases estimates of relative teacher wages. One important implication of these findings is that researchers should pay attention to geographic wage variations when making earnings comparisons between teaching and other occupations. 相似文献
55.
Despite extensive research supporting educational acceleration for students with high academic ability, some psychologists, counselors, and educators express concerns about accelerative interventions. Such concerns often hinge on uncertainty about social acceptance, even in inclusive education settings. Research on acceleration has consistently shown benefits for students with high ability; however, there is a lack of research about grade‐based acceleration in inclusive schools. This study engaged two groups of students in group concept mapping processes to examine how they conceptualized beliefs about grade‐based acceleration in inclusive schools. First, 26 students in inclusive classes generated beliefs about grade‐based acceleration. Then they, and a group of 14 students with high ability, structured the data by sorting and rating a synthesized list of the generated beliefs. We analyzed the sorted data using multidimensional scaling and hierarchical cluster analysis. The resultant cluster maps revealed some differences and some similarities in the ways that the two groups of students conceptualized beliefs about educational acceleration. Practical implications are discussed. 相似文献
56.
Innovative Higher Education - College students with foster care backgrounds have demonstrably lower graduation rates than peers, and resources obtained through their social networks are vital to... 相似文献
57.
Oshana D Harding K Friedman L Holton JK 《Child abuse & neglect》2005,29(3):219-28; author reply 241-9
58.
The emphasis on competitiveness and the knowledge-based economy in European policymaking has resulted in a heightened focus on monitoring and steering the science system, particularly through metric-based instruments. Policymakers’ general aims of fostering excellent research and breakthroughs are shared by researchers as well; however, below the surface is a paradox that is rarely discussed. The political system and the science system understand and pursue these concepts and objectives differently. Through two case studies on high-performing university-based research environments in Denmark and Sweden, this article uncovers the ways in which highly successful researchers often behave in ways that run counter to policy steering attempts. They do this by shielding themselves and their research group from steering pressures originating in the political system. Using Luhmann’s systems theory, the cases demonstrate why the relationship between the science system and the political system needs to be understood as a horizontal rather than a vertical relationship, and using concepts from organizational theory, provides a model and terminology for identifying and analyzing the types of mechanisms and strategic responses that the science system uses to shield itself from political steering pressures. 相似文献
59.
Sheila Slaughter Charler Carter Donald Bligh Arthur Levine D. Selby 《Higher Education》1981,10(4):491-495
60.