全文获取类型
收费全文 | 1004篇 |
免费 | 19篇 |
专业分类
教育 | 598篇 |
科学研究 | 96篇 |
各国文化 | 15篇 |
体育 | 114篇 |
文化理论 | 18篇 |
信息传播 | 182篇 |
出版年
2022年 | 5篇 |
2021年 | 5篇 |
2020年 | 16篇 |
2019年 | 35篇 |
2018年 | 37篇 |
2017年 | 31篇 |
2016年 | 27篇 |
2015年 | 12篇 |
2014年 | 28篇 |
2013年 | 236篇 |
2012年 | 26篇 |
2011年 | 38篇 |
2010年 | 20篇 |
2009年 | 29篇 |
2008年 | 15篇 |
2007年 | 24篇 |
2006年 | 14篇 |
2005年 | 26篇 |
2004年 | 9篇 |
2003年 | 22篇 |
2002年 | 17篇 |
2001年 | 13篇 |
2000年 | 19篇 |
1999年 | 15篇 |
1998年 | 11篇 |
1997年 | 13篇 |
1996年 | 10篇 |
1995年 | 6篇 |
1994年 | 14篇 |
1993年 | 9篇 |
1992年 | 13篇 |
1991年 | 8篇 |
1990年 | 14篇 |
1989年 | 12篇 |
1988年 | 6篇 |
1987年 | 11篇 |
1986年 | 12篇 |
1985年 | 11篇 |
1983年 | 13篇 |
1982年 | 6篇 |
1980年 | 9篇 |
1977年 | 7篇 |
1976年 | 8篇 |
1975年 | 7篇 |
1970年 | 4篇 |
1969年 | 4篇 |
1967年 | 4篇 |
1870年 | 6篇 |
1868年 | 6篇 |
1867年 | 5篇 |
排序方式: 共有1023条查询结果,搜索用时 15 毫秒
91.
Recent handbooks of giftedness or expertise propose a plethora of conceptions on the development of excellent performance but, to our knowledge, there are no comparative studies that provide empirical evidence of their validity to guide researchers and practitioners in their adoption of a particular conception. This study sought to close that gap by conducting an empirical comparison of the major approaches to giftedness and expertise currently in use: the IQ model, the performance model, the moderator model, and the systemic model. The four models were tested in a longitudinal study with a sample of N = 350 German students attending university preparatory schools; 25% of the sample had been assigned to special classes for the gifted. The construct and predictive validity of the four models were tested by means of structural equation modeling. Theoretical considerations along with our results indicated a differentiation among the models whereby some could only predict while others could also explain the emergence of excellent performance and thereby yield valuable information for the design of interventions. The empirical comparison of the approaches showed that they were unequally suited for the two challenges. For prediction purposes, the performance approach proved best while, for explanations, the moderator and systemic approaches were the most promising candidates. Even so, the latter did demonstrate conceptual and/or methodological problems. The IQ approach was superseded by the other approaches on both prediction and explanation. Implications and limitations of the findings are discussed. 相似文献
92.
93.
94.
95.
96.
97.
98.
This article examines the relationship between public opinionand the transformation of the Soviet Union. Results of an August1990 survey showed that the majority of adults supported democraticreform, but lacked confidence in the Soviet regime. Young andmiddle-aged people, urban residents, and those with higher educationtended to be more supportive of democratic reform and more alienatedfrom the regime. The nationalities differed widely in supportfor democratic reform and confidence in the regime. In the partlydemocratized political system, Boris Yeltsin acquired a broadfollowing by appealing to the electorate and advocating radicalchange. A February 1991 poll showed that his support was greatestamong Russians who backed the Russian parliament and stronglyendorsed democratic reform and private enterprise. With suchbacking, Yeltsin won the June 1991 Russian presidential electionand then mobilized popular opposition to the August coup attempt.The coup's failure dealt a fatal blow to Communist rule, Gorbachev'sleadership, and the Soviet Union itself. 相似文献
99.
Albert Meijer 《Archival Science》1987,1(4):361-372
Electronic records of government organizations are becoming increasingly important for accountability. Managing electronic records, however, proves to be difficult since information and communication technologies confront organizations with various opportunities and risks. In this paper the findings of an international expert survey on electronic records management are presented. These findings identify opportunities and risks for e-mail systems, database management systems, office systems, web technology systems and smart systems. They also point to five crucial questions that must be addressed in order to guarantee the availability of electronic records for accountability.This revised version was published online in October 2005 with corrections to the Cover Date. 相似文献
100.