全文获取类型
收费全文 | 1962篇 |
免费 | 27篇 |
国内免费 | 2篇 |
专业分类
教育 | 1425篇 |
科学研究 | 195篇 |
各国文化 | 34篇 |
体育 | 113篇 |
综合类 | 1篇 |
文化理论 | 24篇 |
信息传播 | 199篇 |
出版年
2023年 | 15篇 |
2021年 | 26篇 |
2020年 | 40篇 |
2019年 | 54篇 |
2018年 | 49篇 |
2017年 | 77篇 |
2016年 | 68篇 |
2015年 | 40篇 |
2014年 | 40篇 |
2013年 | 430篇 |
2012年 | 31篇 |
2011年 | 36篇 |
2010年 | 39篇 |
2009年 | 46篇 |
2008年 | 57篇 |
2007年 | 23篇 |
2006年 | 38篇 |
2005年 | 35篇 |
2004年 | 32篇 |
2003年 | 27篇 |
2002年 | 27篇 |
2001年 | 33篇 |
2000年 | 26篇 |
1999年 | 20篇 |
1998年 | 18篇 |
1997年 | 13篇 |
1996年 | 19篇 |
1995年 | 22篇 |
1994年 | 24篇 |
1993年 | 13篇 |
1992年 | 21篇 |
1991年 | 18篇 |
1990年 | 30篇 |
1989年 | 18篇 |
1988年 | 15篇 |
1987年 | 16篇 |
1986年 | 22篇 |
1985年 | 31篇 |
1984年 | 14篇 |
1983年 | 14篇 |
1981年 | 25篇 |
1980年 | 13篇 |
1979年 | 14篇 |
1977年 | 19篇 |
1976年 | 14篇 |
1975年 | 13篇 |
1974年 | 15篇 |
1973年 | 12篇 |
1972年 | 13篇 |
1968年 | 13篇 |
排序方式: 共有1991条查询结果,搜索用时 9 毫秒
61.
62.
David D. Williams Joseph B. South Stephen C. Yanchar Brent G. Wilson Stephanie Allen 《Educational technology research and development : ETR & D》2011,59(6):885-907
This study employed a qualitative research design to investigate how instructional designers use evaluation in everyday design
practice. While past research has examined how designers spend their time, how they generally make decisions, and expert-novice
differences, little attention has been paid to use of context, input, process, or product evaluation, from the perspective
of practicing designers. Based on interviews of practitioners, our findings included ten themes regarding how designers use
evaluation to improve their products. While these results substantiate to some degree the claim that practitioners believe
clients will not pay for formal evaluations, they also suggest that practitioners use evaluation in important but less formal
ways. Other conclusions regarding the role of evaluation in design are provided and future directions for training and research
are discussed. 相似文献
63.
Since their founding, the Black churches have strived to implement and fulfill their missions. These institutions acknowledge the importance to become actively involved in the community as well as engaged in the lives of young people. Black churches are faced with unique challenges every day, however, they provide significant number of resources to the communities at large. In this study, we examine the role of partnerships through local churches and its impact on low performing schools using qualitative methodology. Research shows that low performing schools are influenced positively by partnerships with Black churches. 相似文献
64.
65.
The effects of method of reproduction, status of researcher, and personalization of signature on the initial rate of return of mail questionnaires were investigated, using a one-page combination cover letter and questionnaire mailed to 600 professors at the University of Maryland, College Park. The levels of each experimental variable were: Status — professor, graduate student; signature — hand signed in ink, mimeographed facsimile; reproduction — typed, photocopied, mimeographed.A response rate of 69% was obtained without using any follow-up procedures. Chi square analyses indicated no significant differences in the rate of returns for the levels of any of the experimental variables.It appears that initial return rate will not be significantly affected by using the most efficient, least expensive method available. 相似文献
66.
67.
R Abraham M Joseph John R Calton J Dhanoa 《Indian journal of clinical biochemistry : IJCB》2006,21(1):95-100
Homocysteine(Hcy) has been implicated as a novel risk factor of Coronary Artery Disease (CAD) among Asian Indians, but many
studies done in India failed to reveal any direct correlation. It has also been reported that Folic acid and Vitamin B12 levels
inversely affect serum levels of homocysteine. In this study, we looked at the levels of homocysteine among patients with
CAD. The effect of Vitamin B12, Folate and other risk factors on homocysteine levels were also evaluated. Mean homocysteine
levels in cases (22.81±13.9, n=70) were significantly higher (p=<0.001) than the controls (7.77±7.3, n=70). However no statistically
significant correlation could be deduced between homocysteine Vitamin B12, and Folate. Cumulative analysis have indicated
an increase in homocysteine levels among patients with CAD with every additional risk factor. 相似文献
68.
Joseph Trovato John Harris Colin W. Pryor S. Cynthia Wilkinson 《Psychology in the schools》1992,29(1):52-61
An operant-based program was established to study the effectiveness of regular classroom teachers as mediators for behavior change in regular classroom settings. Fifty-nine first and second graders were matched on several measures and randomly assigned to an experimental condition or a control condition. Experimental children were addressed through teacher-generatedlconsultant-supported behavior intervention strategies. Changes in behavior were examined by assessing differences from initial baseline and from first to second administration of the Child Behavior Checklist. In- class behavior change was significantly greater for the experimental condition than for the control condition, although behavior change from first to second administration of the Child Behavior Checklist was significant for all groups. A moderate to high rate of compliance to the intervention program was maintained by teachers, and moderate to high ratings of satisfaction were obtained for the program from all participants. The effectiveness, feasibility, and applicability of the program are discussed. 相似文献
69.
Harry F. Dorrell Joseph M. Moore Mark F. Smith Thomas I. Gee 《Journal of sports sciences》2019,37(1):67-73
This study investigated the validity and reliability of the GymAware PowerTool (GPT). Thirteen resistance trained participants completed three visits, consisting of three repetitions of free-weight back squat, bench press, deadlift (80% one repetition maximum), and countermovement jump. Bar displacement, peak and mean velocity, peak and mean force, and jump height were calculated using the GPT, a three-dimensional motion capture system (Motion Analysis Corporation; 150 Hz), and a force plate (Kistler; 1500 Hz). Least products regression were used to compare agreeability between devices. A within-trial one-way ANOVA, typical error (TE; %), and smallest worthwhile change (SWC) were used to assess reliability. Regression analysis resulted in R2 values of >0.85 for all variables excluding deadlift mean velocity (R2 = 0.54–0.69). Significant differences were observed between visits 3-2 for bench press bar displacement (0.395 ± 0.055 m; 0.383 ± 0.053 m), and deadlift bar displacement (0.557 ± 0.034 m; 0.568 ± 0.034 m). No other significant differences were found. Low to moderate TE (0.6–8.8%) were found for all variables, with SWC ranging 1.7–7.4%. The data provides evidence that the GPT can be used to measure kinetic and kinematic outputs, however, care should be taken when monitoring deadlift performance. 相似文献
70.
This study examined components of teacher judgements that an intervention is either acceptable or unacceptable. A total of 180 preservice and student teachers were asked to evaluate the acceptability of six different interventions. The evaluations of acceptability were assessed using a 20–item rating scale. A factor analysis of the rating scale yielded one major dimension, a general acceptability factor, and four secondary dimensions of intervention acceptability: risk to the target child, amount of teacher time required, effects of the intervention on other children, and amount of teacher skill required. Results are discussed in terms of designing interventions that are both effective and usable by classroom teachers. 相似文献