全文获取类型
收费全文 | 9708篇 |
免费 | 98篇 |
国内免费 | 9篇 |
专业分类
教育 | 7158篇 |
科学研究 | 619篇 |
各国文化 | 183篇 |
体育 | 720篇 |
综合类 | 5篇 |
文化理论 | 95篇 |
信息传播 | 1035篇 |
出版年
2021年 | 78篇 |
2020年 | 121篇 |
2019年 | 212篇 |
2018年 | 237篇 |
2017年 | 309篇 |
2016年 | 264篇 |
2015年 | 189篇 |
2014年 | 236篇 |
2013年 | 2345篇 |
2012年 | 235篇 |
2011年 | 204篇 |
2010年 | 187篇 |
2009年 | 220篇 |
2008年 | 259篇 |
2007年 | 236篇 |
2006年 | 215篇 |
2005年 | 208篇 |
2004年 | 199篇 |
2003年 | 181篇 |
2002年 | 170篇 |
2001年 | 111篇 |
2000年 | 135篇 |
1999年 | 117篇 |
1998年 | 109篇 |
1997年 | 114篇 |
1996年 | 133篇 |
1995年 | 116篇 |
1994年 | 126篇 |
1993年 | 102篇 |
1992年 | 119篇 |
1991年 | 112篇 |
1990年 | 119篇 |
1989年 | 112篇 |
1988年 | 94篇 |
1987年 | 84篇 |
1986年 | 96篇 |
1985年 | 78篇 |
1984年 | 82篇 |
1983年 | 99篇 |
1982年 | 84篇 |
1981年 | 89篇 |
1980年 | 90篇 |
1979年 | 75篇 |
1978年 | 99篇 |
1977年 | 75篇 |
1976年 | 68篇 |
1975年 | 65篇 |
1974年 | 53篇 |
1973年 | 58篇 |
1970年 | 53篇 |
排序方式: 共有9815条查询结果,搜索用时 15 毫秒
91.
92.
Principal Recruitment: An Empirical Evaluation of a School District’s Internal Pool of Principal Certified Personnel 总被引:1,自引:0,他引:1
Paul A. Winter James S. Rinehart Marco A. Muñoz 《Journal of Personnel Evaluation in Education》2002,16(2):129-141
Applicant pools for principal vacancies are shrinking nationwide. This shortage of job applicants requires school districts to evaluate their internal pools of principal certified personnel. In this study, 194 certified individuals from a large school district responded to a survey measuring attraction to the job of principal, current job satisfaction versus expected satisfaction in the job of principal, barriers to pursuing the job, and recommended changes in the job. Few participants intended to apply for principal vacancies due to age (median=51), lack of self-reported capability to do the job, and satisfaction with the current job. Participants perceived their job satisfaction would decrease on assuming the job of principal relative to factors such as time with family and job security, and increase relative to factors such as salary and opportunity to experience varied activities. Implications for principal recruitment and recommendations for restructuring the job are discussed. 相似文献
93.
94.
The rationale was to apply Piaget’s theory and methods to the study of the phylogenetic development of cognitive abilities. It was asked whether squirrel monkeys have the prerequisite skills for conservation of quantity, and, specifically, whether they might respond differentially to equivalent and unequivalent volumetric cues. All monkeys responded significantly and differentially to pairs of identical objects or pairs of objects similar only in volume vs. pairs of objects which differed in volume. It was concluded that squirrel monkeys have the prerequisite skills for the conservation of quantity. Discussion included methodological problems associated with demonstrating conservation in nonhumans as well as the potential usefulness of Piaget’s theory for phylogenetic studies of intelligence. 相似文献
95.
96.
97.
Rats were trained to leverpress for food and subsequently exposed to either arithmetic series or random variable-interval reinforcement schedules. Adjunctive drinking developed in all subjects exposed to arithmetic variable-interval reinforcement, but did not develop in six of the eight animals trained on the random schedule. The results suggest that adjunctive drinking is the result of an interaction between the tendency of rats to drink after eating and the ability of locally low probabilities of reinforcement within schedules to induce conditioned behavioral states. 相似文献
98.
In order to emphasize the development of skills in helping the culturally disadvantaged, graduate students were given practicum placement in a Department of Labor-financed agency which gave counseling and employment training to disadvantaged youth. Students attended staff meetings, interviewed staff members concerning the work they performed, and discussed client contacts with caseworkers, in addition to interviewing agency clients. Increased awareness of problems, broadened conceptualizations, and expansion of interpersonal skills were seen as advantages of the practicum. Limitations included some lack of goal clarity and inefficiency of time use in dealing with this clientele. 相似文献
99.
100.