首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   5605篇
  免费   57篇
  国内免费   30篇
教育   3931篇
科学研究   132篇
各国文化   44篇
体育   1077篇
综合类   350篇
文化理论   4篇
信息传播   154篇
  2024年   5篇
  2023年   2篇
  2022年   22篇
  2021年   78篇
  2020年   113篇
  2019年   194篇
  2018年   176篇
  2017年   180篇
  2016年   122篇
  2015年   150篇
  2014年   275篇
  2013年   1102篇
  2012年   389篇
  2011年   368篇
  2010年   342篇
  2009年   306篇
  2008年   314篇
  2007年   238篇
  2006年   234篇
  2005年   197篇
  2004年   155篇
  2003年   169篇
  2002年   174篇
  2001年   138篇
  2000年   112篇
  1999年   39篇
  1998年   30篇
  1997年   24篇
  1996年   18篇
  1995年   7篇
  1994年   13篇
  1993年   2篇
  1992年   1篇
  1991年   1篇
  1985年   2篇
排序方式: 共有5692条查询结果,搜索用时 0 毫秒
41.
】通过对大鼠跑台运动和负重游泳致力竭性疲劳时血乳酸的测定及对心肌、骨骼肌组织学损伤程度的观察,研究糖酵解供能条件下不同运动致力竭性疲劳时,心肌、骨骼肌组织学变化特征及致疲劳原因。结果表明,力竭性疲劳时,与游泳组相比,跑台组大鼠心肌和骨骼肌的组织学损伤相对较少,且血乳酸浓度也低于游泳组(P<0.01)。这提示,不同的运动方式对疲劳进程有不同的影响,并且在此运动模型中,血乳酸可能是引起疲劳性损伤的重要因素  相似文献   
42.
采用文献资料和病理推理等方法,从解剖学、运动生物力学以及髌骨软骨的营养获得等方面阐述了“髌骨软骨病”的损伤机制,对停训篮球运动员“髌骨软骨病”的病因及其机理进行了分析与总结,并提出一些康复对策.  相似文献   
43.
群殴事件中故意伤害罪的认定问题是司法实践中的难点,同时在理论界也存在不同观点。文章认为,应首先从双方人数对比上予以区分,然后根据具体情节、手段、后果等因素来确定案件的性质。  相似文献   
44.
    
Single‐best answers to multiple‐choice items are commonly dichotomized into correct and incorrect responses, and modeled using either a dichotomous item response theory (IRT) model or a polytomous one if differences among all response options are to be retained. The current study presents an alternative IRT‐based modeling approach to multiple‐choice items administered with the procedure of elimination testing, which asks test‐takers to eliminate all the response options they consider to be incorrect. The partial credit model is derived for the obtained responses. By extracting more information pertaining to test‐takers’ partial knowledge on the items, the proposed approach has the advantage of providing more accurate estimation of the latent ability. In addition, it may shed some light on the possible answering processes of test‐takers on the items. As an illustration, the proposed approach is applied to a classroom examination of an undergraduate course in engineering science.  相似文献   
45.
46.
    
This article follows an earlier publication highlighting the changing role of special educational needs co‐ordinators (SENCos) in England. SENCos are now required to manage change strategically and deliver inclusive school cultures. School‐based action research undertaken by a teacher studying for the postgraduate National Award for SEN Co‐ordination (NASENCO) is featured in the article; a strategic review of resource allocation increased the availability and quality of interventions for students with special educational needs and disabilities (SEND). The commentary which frames the study acknowledges that many SENCos are not yet members of a senior school management team (SMT) despite their mandated strategic whole‐school remit. Featuring the process through which one SENCo has strived to enhance SEND provision and develop context‐specific key performance indicators brings official guidance on the SENCo's role in strategic change management into sharp focus, raising questions that should concern both SMTs and non‐SMT SENCos.  相似文献   
47.
Abstract

This article discusses some recent attempts to develop an economic case that can justify proposals for curricular and institutional reform in education of a radical kind. It investigates the claim, which underpins current debates around a Labour Party alternative to Conservative education policy, that a new phase of development, often referred to as ‘post‐Fordism’, of the dominant economies of the western world provides the basis, and the necessity, for a new system of education which would realise a programme of egalitarian and democratic reform.  相似文献   
48.
Compared with the traditional focus on developmental problems, research on positive development is relatively new. Empirical research in children's well‐being has been scarce. The aim of this study was to develop a theoretically and empirically based instrument for practitioners to observe and assess preschool children's well‐being in early childhood settings. The analysis of preschool teachers' ratings yields six dimensions of social‐emotional well‐being: (1) making contact/social performance, (2) self control/thoughtfulness, (3) self‐assertiveness, (4) emotional stability/coping with stress, (5) task orientation, (6) pleasure in exploration. Composite scales were constructed. PERIK consists of six scales of six items each. The scales differentiate in both the upper and lower range and despite their brevity have good psychometric qualities. The instrument was published together with a booklet containing examples of how PERIK observations can be employed in practical work with children.  相似文献   
49.
一种新型的闭环真空硅微陀螺仪(英文)   总被引:1,自引:0,他引:1  
提出了一种新型的硅微陀螺仪闭环控制策略.所设计的硅微陀螺仪工作在10 Pa,采用金属壳CAN封装形式,驱动和检测两模态品质因素高达10000以上,且都采用了基于静电力反馈方法实现闭环.驱动模态采用单边驱动单边检测,尽量使线路简化;检测模态采用双重分解和重构闭环回路.测试结果表明:有用信号和正交信号实现很好的相位解耦,互不影响;在满量程4-300(°)/s、标度因素9.6 mV/((°)·S)的情况下,零偏稳定性已达到28(°)/h;非线性度达到400×10-6;仿真带宽大于100 Hz.这较以前设计的仅在空气下工作的硅微陀螺性能提高了近2个数量级.  相似文献   
50.
Even though peer tutors are often used in gross anatomy courses, research in the field is rather a subject of the last two decades. This is especially true about the didactical challenges these types of peer tutors experience during their tutorials and about how they are prepared for the task. The aim of the presented study was to learn about the training needs of the tutors, and to subsequently design, implement, and evaluate a didactical training concept. A qualitative design was chosen to examine how tutors can best be prepared for tutorials of gross anatomy. To do so, focus group interviews were conducted. The data were analyzed and grouped into various concepts, using semi‐structured interview questions as guidance. It was found that peer tutors are in need of training in the following aspects: Dealing with students who are experiencing difficulties during or as a result of dissection, dealing with group dynamics, that is, at the dissection table, keeping students motivated, time management, and staying confident as a tutor. In order to be regarded as useful and relevant in the eyes of tutors, a preparatory training course should include all these aspects in addition to general didactical training elements. Training needs of peer tutors of gross anatomy go beyond the content of standardized didactical curricula; therefore, tutors should be prepared with a curriculum that is specifically geared toward the many challenges associated with teaching gross anatomy to first year medical students which are already so well documented in the research literature. Anat Sci Educ 10: 495–502. © 2017 American Association of Anatomists.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号