全文获取类型
| 收费全文 | 988篇 |
| 免费 | 15篇 |
专业分类
| 教育 | 709篇 |
| 科学研究 | 38篇 |
| 各国文化 | 20篇 |
| 体育 | 101篇 |
| 综合类 | 1篇 |
| 文化理论 | 23篇 |
| 信息传播 | 111篇 |
出版年
| 2021年 | 6篇 |
| 2020年 | 14篇 |
| 2019年 | 16篇 |
| 2018年 | 19篇 |
| 2017年 | 21篇 |
| 2016年 | 24篇 |
| 2015年 | 19篇 |
| 2014年 | 31篇 |
| 2013年 | 264篇 |
| 2012年 | 27篇 |
| 2011年 | 28篇 |
| 2010年 | 22篇 |
| 2009年 | 17篇 |
| 2008年 | 22篇 |
| 2007年 | 27篇 |
| 2006年 | 21篇 |
| 2005年 | 26篇 |
| 2004年 | 19篇 |
| 2003年 | 24篇 |
| 2002年 | 21篇 |
| 2001年 | 8篇 |
| 2000年 | 20篇 |
| 1999年 | 5篇 |
| 1998年 | 9篇 |
| 1997年 | 10篇 |
| 1996年 | 12篇 |
| 1995年 | 12篇 |
| 1994年 | 13篇 |
| 1993年 | 20篇 |
| 1992年 | 14篇 |
| 1991年 | 21篇 |
| 1990年 | 13篇 |
| 1989年 | 11篇 |
| 1988年 | 11篇 |
| 1987年 | 8篇 |
| 1986年 | 13篇 |
| 1985年 | 9篇 |
| 1983年 | 10篇 |
| 1982年 | 10篇 |
| 1981年 | 10篇 |
| 1980年 | 6篇 |
| 1979年 | 14篇 |
| 1978年 | 6篇 |
| 1977年 | 4篇 |
| 1976年 | 9篇 |
| 1974年 | 4篇 |
| 1973年 | 9篇 |
| 1971年 | 4篇 |
| 1970年 | 7篇 |
| 1955年 | 3篇 |
排序方式： 共有1003条查询结果，搜索用时 0 毫秒
51.
52.
53.
54.
55.
Bruce D.Henderson 《科技创业月刊》2002,(4):33
任何一个复杂的问题都是近乎无数的事实和关系的组合。商业行为尤其受到方方面面的影响,包括过去的、非逻辑的和不可知的事物的影响。这种复杂性又因目标不同与服务于各种各样的顾客的需要而更加盘根错节,而顾客的许多目标不得不经过权衡后放弃。在这样复杂的条件下解决问题需要井井有条的、系统的方法以试图优化最后的决定。 相似文献
56.
This study examined parent-child emotion discourse, children's independent social information processing, and social skills outcomes in 146 families of 8-year-olds with and without developmental delays. Children's emergent social-cognitive understanding (internal state understanding, perspective taking, and causal reasoning and problem solving) was coded in the context of parent-child conversations about emotion, and children were interviewed separately to assess social problem solving. Mothers, fathers, and teachers reported on children's social skills. The proposed strengths-based model partially accounted for social skills differences between typically developing children and children with delays. A multigroup analysis of the model linking emotion discourse to social skills through children's prosocial problem solving suggested that processes operated similarly for the two groups. Implications for ecologically focused prevention and intervention are discussed. 相似文献
57.
The goal of this study was to explore the processes of group role formation in online class settings. Qualitative analysis was used to code chat logs and discussion threads in six undergraduate Family and Consumer Sciences online courses that required online group projects. Four themes related to the process of group role formation emerged: testing the waters, apologies as being nice, tag – you’re it, and struggling to find one’s role. Students created roles of leader, wannabe, spoiler, agreeable enabler, coat‐tails, and supportive worker as the group process evolved over the course of the semester. Results lend support for a balance between allowing students to create and experience roles on their own and faculty assignment of roles. Questions are raised related to faculty approaches toward directing and scaffolding the group process. 相似文献
58.
Use of dual-task methodology for skill assessment and development: examples from rugby league 总被引：2，自引：1，他引：1
We assessed the attentional demands of drawing and passing in rugby league players and investigated the effects of single-task and dual-task training on the acquisition, retention, and transfer of skill in these athletes. In Study 1, high-skilled and lesser-skilled rugby league players performed a standardized 2-on-1 drill under single-task (primary skill in isolation) and dual-task (primary skill while performing a secondary verbal tone recognition task) conditions. No differences were detected in primary task performance between groups, although the performance of the high-skilled players was more resistant to skill decrement under dual-task conditions. In Study 2, high-performance rugby league players were randomly allocated to either a single-task or dual-task training group. Each group underwent 8 weeks of training between the pre- and post-test sessions. While the mean improvement for draw and pass proficiency under dual-task conditions in the dual-task training group was greater than in the single-task training group (10.0% vs. 2.3%), the differences, while providing a moderate effect size (d = 0.57), were not statistically significant. These results suggest that the attentional demands of drawing and passing are reduced in high-skilled rugby league players compared with their lesser-skilled counterparts. In addition, compared with single-task training, dual-task training appears to improve the ability to perform dual-task draw and pass tasks (possibly through an improvement in time-sharing skills). Further studies are required to verify the efficacy of dual-task training as a training stimulus. 相似文献
59.
In this study, we used recently developed technology to determine the force-time profile of elite swimmers, which enabled coaches to make informed decisions on technique modifications. Eight elite male swimmers with a FINA (Federation Internationale de Natation) rank of 900+ completed five passive (streamline tow) and five net force (arms and leg swimming) trials. Three 50-Hz cameras were used to video each trial and were synchronized to the kinetic data output from a force-platform, upon which a motorized towing device was mounted. Passive and net force trials were completed at the participant's maximal front crawl swimming velocity. For the constant tow velocity, the net force profile was presented as a force-time graph, and the limitation of a constant velocity assumption was acknowledged. This allowed minimum and maximum net forces and arm symmetry to be identified. At a mean velocity of 1.92+0.06 m s?1, the mean passive drag for the swimmers was 80.3+4.0 N, and the mean net force was 262.4+33.4 N. The mean location in the stroke cycle for minimum and maximum net force production was at 45% (insweep phase) and 75% (upsweep phase) of the stroke, respectively. This force-time profile also identified any stroke asymmetry. 相似文献
60.