全文获取类型
收费全文 | 80篇 |
免费 | 0篇 |
国内免费 | 2篇 |
专业分类
教育 | 50篇 |
科学研究 | 19篇 |
体育 | 6篇 |
综合类 | 6篇 |
信息传播 | 1篇 |
出版年
2022年 | 2篇 |
2021年 | 10篇 |
2020年 | 5篇 |
2019年 | 4篇 |
2018年 | 2篇 |
2016年 | 1篇 |
2015年 | 4篇 |
2014年 | 7篇 |
2013年 | 4篇 |
2012年 | 5篇 |
2011年 | 1篇 |
2010年 | 5篇 |
2009年 | 3篇 |
2008年 | 5篇 |
2007年 | 4篇 |
2006年 | 5篇 |
2005年 | 4篇 |
2004年 | 3篇 |
2002年 | 2篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1998年 | 1篇 |
1993年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
排序方式: 共有82条查询结果,搜索用时 15 毫秒
1.
研究目的:建立人体在运动前后基因的表达量随时间的变化数据库,利用基因表达数据库进行相关数据挖掘。研究方法:利用高通量芯片测序数据库(GEO)中的公开测序数据开发了一个基于网络检索的数据库Exercise SAGE,可以帮助科研工作者检索人体运动前后在不同时间点基因的表达量。通过对人体在运动前后基因的表达量随时间的变化进行探究,可以更好的探究运动科学背后的分子机制。结论:以人体运动前后高通量芯片测序数据为基础,通过Web数据库技术,建立了人体运动前和运动后不同时间点的数据库,相关科研人员可以对数据库进行数据挖掘或共享数据。Exercise SAGE数据库在线访问地址是www. tsrna. org。 相似文献
2.
《了不起的盖茨比》是美国杰出小说家司各特·菲茨杰拉德的重要代表作。本文主要依据语言学与文体学相关理论,从描写角度,叙述顺序和描写焦点等三方面对这部小说的语言进行分析,旨在发掘小说优美凄婉文体效果的形成原因。 相似文献
3.
4.
基于DEA算法的科研评审排序方法与应用 总被引:9,自引:0,他引:9
排序问题是管理科学中常见的问题,科研评审排序也是科研管理中一个常见的需要解决的问题,本在DEA方法的C2R模型基础上,建立一种科研项目立项评审的排序数学模型,并将其应用于科研项目立项评审的排序工作中,取得了较好效果。 相似文献
5.
6.
This article presents the developmental continuum of children’s storytelling skills and provides examples at each of five
levels: labeling, listing, connecting, sequencing and narrating. The authors connect these developing narrative skills to
communication, literacy and cognition. Strategies to facilitate development from one level to another are described. 相似文献
7.
王竞 《安徽教育学院学报》2007,25(3):130-132
几年来的中学生物教学实践中,我在培养学生的记忆能力方面做了一点探索,即尝试用“四化”学习法优化组织课堂教学,通过对生物课堂知识进行加工、处理并逐级提高知识的加工手段,最终使课堂教学知识易于被学生理解、贮存,转化成学生自己的知识,让学生在学习过程中不断提高知识层次。 相似文献
8.
黄小萍 《华侨大学学报(哲学社会科学版)》2009,(2):118-125
比较英语音节首音和尾音构成的分析模式。SSP简明实用,符合英语的语音配列倾向,其限制性比GP的多元素性程度条件、CVCV模式和“合音”分析模式强。GP准许原则的框架下,英语的音节结构为CCVX,sC和sCC中s与后面辅音不属于同一音节的分析解决了英语语音配列允许的sC、sCC组合和词尾辅音丛违背SSP的问题。语言倾向采用两辅音之间响度距离更大的首音丛、OCP、MSD等原则和发音、构词方面的因素能解释符合SSP的辅音丛为何未成为英语的语音配列允许的组合。 相似文献
9.
Aaron J. Beach René E. D. Ferdinands Peter J. Sinclair 《Journal of sports sciences》2018,36(10):1127-1134
The techniques of spin bowling in cricket have been largely formulated from the collective intuitions of past players. A standard model of bowling technique has been generally prescribed for both off-spin and leg-spin bowlers, but there has been no biomechanics research to validate this approach. This study measured 20 Type-2 off-spin and 15 Type-2 leg-spin bowlers using a 3D Cortex motion analysis system. Correlation coefficients between segmental kinematic variables and spin rate in the off-spin and leg-spin bowlers revealed that off-spin bowling was associated with an earlier movement time of the thorax, whereas leg-spin bowling was associated with a greater magnitude and earlier movement time of pelvis rotation, as well as a greater magnitude of pelvis-shoulder separation movement. The maximum velocity of rear hip flexion differentiated between both groups of bowlers. The GLM suggested that for off-spinners, rear hip flexion velocity significantly explained the variance in spin rate (subject to sequential timing constraints), while for leg-spinners, the time of maximum rear hip flexion and maximum arm circumduction velocity significantly explained variance in spin rate. This study supports the notion that off-spinners and leg-spinners have significant differences in their joint kinematics, and should not be coached under a one-size-fits-all technical model. 相似文献
10.
Fredrik Tinmark John Hellström Kjartan Halvorsen Alf Thorstensson 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(4):236-244
The aim of this study was to investigate whether kinematic proximal-to-distal sequencing (PDS) and speed-summation are common characteristics of both partial and full-swing shots in golf players of different skill levels and genders. A total of 45 golfers participated, 11 male tournament professionals, 21 male and 13 female elite amateurs. They performed partial shots with a wedge to targets at three submaximal distances, 40, 55 and 70 m, and full-swing shots with a 5 iron and a driver for maximal distance. Pelvis, upper torso and hand movements were recorded in 3D with an electromagnetic tracking system (Polhemus Liberty) at 240 Hz and the magnitude of the resultant angular velocity vector of each segment was computed. The results showed a significant proximal-to-distal temporal relationship and a concomitant successive increase in maximum (peak) segment angular speed in every shot condition for both genders and levels of expertise. A proximal-to-distal utilization of interaction torques is indicated. Using a common PDS movement strategy in partial and full-swing golf shots appears beneficial from mechanical and control points of view and could serve the purpose of providing both high speed and accuracy. 相似文献