全文获取类型
收费全文 | 812篇 |
免费 | 23篇 |
专业分类
教育 | 644篇 |
科学研究 | 40篇 |
各国文化 | 22篇 |
体育 | 39篇 |
综合类 | 1篇 |
文化理论 | 9篇 |
信息传播 | 80篇 |
出版年
2022年 | 4篇 |
2021年 | 8篇 |
2020年 | 19篇 |
2019年 | 22篇 |
2018年 | 20篇 |
2017年 | 26篇 |
2016年 | 22篇 |
2015年 | 21篇 |
2014年 | 29篇 |
2013年 | 195篇 |
2012年 | 22篇 |
2011年 | 20篇 |
2010年 | 15篇 |
2009年 | 19篇 |
2008年 | 20篇 |
2007年 | 16篇 |
2006年 | 20篇 |
2005年 | 23篇 |
2004年 | 17篇 |
2003年 | 14篇 |
2002年 | 20篇 |
2001年 | 6篇 |
2000年 | 3篇 |
1999年 | 9篇 |
1998年 | 6篇 |
1997年 | 7篇 |
1996年 | 9篇 |
1995年 | 13篇 |
1994年 | 4篇 |
1993年 | 10篇 |
1992年 | 8篇 |
1991年 | 10篇 |
1990年 | 10篇 |
1989年 | 17篇 |
1988年 | 17篇 |
1987年 | 7篇 |
1986年 | 7篇 |
1985年 | 9篇 |
1984年 | 11篇 |
1983年 | 5篇 |
1982年 | 10篇 |
1981年 | 8篇 |
1980年 | 11篇 |
1979年 | 6篇 |
1978年 | 12篇 |
1977年 | 7篇 |
1976年 | 9篇 |
1975年 | 6篇 |
1974年 | 7篇 |
1973年 | 3篇 |
排序方式: 共有835条查询结果,搜索用时 15 毫秒
761.
762.
763.
The literature concerning information flow and organizational design for technological innovation is summarized and a conceptual framework of the process of organized technological innovation within the firm is developed. The framework incorporates Rosenbloom's premise that corporate strategy can serve to cut across both internal and external boundaries of the firm and is shown to be consistent with the relevant organizational and planning literatures. The potential for using mathematical models to represent a firm's corporate strategy, budgeting and resource allocation activities is discussed. We argue that such models are needed to provide for policy analysis and could lead to a simulation capability that serves as a surrogate for real-life experimentation. 相似文献
764.
765.
766.
767.
The relationship between hyperactive behavior and children's perceptions of teachers' behavior was investigated. Particular attention was paid to two aspects of teacher behavior—acceptance and demand. An extensive literature review supported the position of viewing hyperactive behavior from a situational and an interactional perspective. The literature also indicated that children's behavior is affected by their perceptions of adult behavior. The subjects were 92 boys enrolled in 8 regular elementary school classrooms. Children's perceptions of acceptance and demand in their teacher's behavior were measured by administering a partial form of the Teacher Behavior Questionnaire to classroom groups. Observed levels of hyperactive behavior were measured by having the subjects' teachers complete the Conners Abbreviated Questionnaire for each boy. Using correlational analyses, hyperactive behavior was found to be significantly related to both variables in the directions of less perceived acceptance and greater perceived demand. The combination of these two measures accounted for 16% of the variance between hyperactivity and student perception of teacher behavior. On group comparison measures, hyperactive boys perceived significantly less acceptance and greater demand than did their nonhyperactive peers. 相似文献
768.
769.
The change in IQ scores over an extended period of time (approximately 17 years) of subjects who had been placed in classes for the Educable Mentally Handicapped was investigated. Analysis indicated that a significant difference existed between WISC scores administered at the time of initial placement (mean age, 11–9) and WAIS scores administered at a later date (mean age, 17–6). In addition, although a difference was revealed with respect to WAIS scores when the students were divided into two groups based upon initial WISC scores (⩽70 vs. >70), it was determined that the change was in a uniform fashion over time; i.e., neither regression nor interaction effects were detected. A final analysis revealed that those students who were located for a follow-up testing approximately 10 years later (mean age 28–8) continued to show a significant increase in IQ scores. The importance placed upon IQ scores for initial placement of students in EMH programs appears to remain suspect. 相似文献
770.
The present study evaluated a school district's psychoeducational screening program to determine the best predictors of two difference score variables: (a) WISC-R FSIQ – PIAT reading recognition score and (b) WISC-R FSIQ – PIAT math score. The study also investigated the merit of using scores from a group-administered achievement test (CAT) as predictors. Subjects were 61 first through fifth graders initially referred for testing from 1982–1984. Multiple regression analyses indicated: (a) for reading, the SIQ score and the PPVT-R – CAT reading difference score were significant predictors, together accounting for 27% of the variance, and (b) for math, the PPVT-R score accounted for 28% of the variance, with additional variables producing nonsignificant increments. Results suggest that CAT scores may prove useful predictors when combined with screening IQ tests to form difference scores. 相似文献