全文获取类型
收费全文 | 183853篇 |
免费 | 2350篇 |
国内免费 | 2382篇 |
专业分类
教育 | 138763篇 |
科学研究 | 14847篇 |
各国文化 | 328篇 |
体育 | 10393篇 |
综合类 | 11280篇 |
文化理论 | 144篇 |
信息传播 | 12830篇 |
出版年
2024年 | 18篇 |
2023年 | 352篇 |
2022年 | 1242篇 |
2021年 | 2124篇 |
2020年 | 2756篇 |
2019年 | 2130篇 |
2018年 | 1555篇 |
2017年 | 1540篇 |
2016年 | 1849篇 |
2015年 | 3897篇 |
2014年 | 9996篇 |
2013年 | 10984篇 |
2012年 | 13396篇 |
2011年 | 14467篇 |
2010年 | 10852篇 |
2009年 | 10323篇 |
2008年 | 11949篇 |
2007年 | 15150篇 |
2006年 | 14777篇 |
2005年 | 13316篇 |
2004年 | 11584篇 |
2003年 | 10458篇 |
2002年 | 8389篇 |
2001年 | 6712篇 |
2000年 | 3774篇 |
1999年 | 1523篇 |
1998年 | 700篇 |
1997年 | 588篇 |
1996年 | 525篇 |
1995年 | 304篇 |
1994年 | 279篇 |
1993年 | 213篇 |
1992年 | 163篇 |
1991年 | 109篇 |
1990年 | 78篇 |
1989年 | 53篇 |
1988年 | 29篇 |
1987年 | 9篇 |
1986年 | 6篇 |
1985年 | 63篇 |
1984年 | 55篇 |
1983年 | 37篇 |
1982年 | 48篇 |
1981年 | 39篇 |
1980年 | 11篇 |
1979年 | 25篇 |
1978年 | 41篇 |
1977年 | 45篇 |
1976年 | 38篇 |
1957年 | 13篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
在计划行为理论(TPB)的基础上,引入身体活动习惯行为与执行意向,构建扩展TPB(METPB)模型,检验该模型对9~19岁青少年群体的中高强度身体活动(MVPA)的适用性,探讨该模型对小学、初中及高中阶段青少年MVPA影响的差异。结果显示:假设模型的拟合度可以接受,纳入习惯行为与执行意向后,METPB显著地提高了其对身体活动行为的解释力。态度和感知行为控制对MVPA行为意向有显著性影响,解释了31.4%的行为意向方差;行为意向和习惯行为对MVPA行为有显著性影响,解释了18.7%的行为方差;执行意向加强了行为意向朝实际行为的转换。METPB模型对于不同学习阶段青少年MVPA意向及行为的影响有显著性差异。其中:主观规范对小学生与初中生MVPA意向产生了显著性影响,而对高中生的MVPA意向并无显著性影响;感知行为控制对3个阶段学生的MVPA意向产生的影响随着学习阶段的上升不断增强。建议:在对于青少年身体活动的干预中,政府、家庭、学校应重视培养学生对于身体活动参与的正确态度,提高其参与身体活动的意愿,培养其参与身体活动的行为习惯,且在对青少年身体活动干预时考虑学习阶段的差异。 相似文献
82.
Julio Guerra Margarita Ortiz-Rojas Miguel Angel Zúñiga-Prieto Eliana Scheihing Alberto Jiménez Tom Broos Tinne De Laet Katrien Verbert 《British journal of educational technology : journal of the Council for Educational Technology》2020,51(4):973-1001
Despite the success of academic advising dashboards in several higher educational institutions (HEI), these dashboards are still under-explored in Latin American HEI's. To close this gap, three different Latin American universities adapted an existing advising dashboard, originally deployed at the KU Leuven to their own context. In all three cases, the context was the main ruling factor to these adaptations. In this paper, we describe these adaptions using a framework that focuses on four different elements of the context: Objectives, Stakeholders, Key moment and Interactions. Evaluation of the adapted dashboards in the three different Latin American universities is conducted through pilots. This evaluation shows the value of the dashboard approach in different contexts in terms of satisfaction, usefulness and impact in academic decision-making and advising tasks. The main contribution of this paper is the systematic reporting of the adaptations to an academic advising dashboard and showing the value of an academic advising dashboard on academic decision-making and advising tasks. 相似文献
83.
Mason Marshall 《Educational theory》2020,70(2):215-229
In this essay, Mason Marshall argues that Plato's views on Forms play a central role in his educational philosophy. In response to what certain commentators have recently written, Marshall contends that this interpretation not only is accurate but also is advantageous because of how it can help philosophy of education. He also addresses the view, proposed by one philosopher of education, that Plato believes that the most valuable sort of knowledge cannot be fully expressed in words and that the objects of this knowledge are something other than transcendent Forms. Preferable to that view, Marshall argues, is the idea that Plato wants knowledge of Forms which is nonrepresentational. 相似文献
84.
从感觉训练、概念发展、行动技能、定向系统、求助技能、安全议题、小区资源与大众运输系统七个方面选取50项能力指标,对海峡两岸64名担任定向行走课程的教师进行问卷调查。调查结果显示:大多数被调查者认可这50项能力指标;定向行走教师对自己的课程与教学专业能力认可度多为中等,需要进一步作培训。同时发现,在定向行走课程与专业能力各向度的重要程度上,海峡两岸定向行走教师的认知有显著差异,各向度胜任程度的差异更加明显;而定向行走教师的年龄对定向行走课程与教学专业能力在重要程度和胜任程度上并没有显著差异;海峡两岸担任定向行走课程的教师,多数认为有培训的必要。建议将重要性在3.5以上的题目编制为《定向行走专业能力检核表》;将定向行走专业能力胜任程度在3.5以下的向度作为定向行走师资培训的参考。 相似文献
85.
《黄帝内经》是中医重要典籍,它将五行与人体形态、体质、人格特征等属性进行联系,提出“五形人”并推演出“阴阳二十五人”学说。“阴阳二十五人”包含了理论驱动式、演绎式的人格理论,不同于西方数据驱动式、归纳式的人格理论,因此具有重要的理论价值。与此同时,该学说也存在一些明显的瑕疵,需要加以完善和修正。 相似文献
86.
We analyse the effect of violent crime on students' results in Costa Rica. The combination of PISA data and highly disaggregated information on crime at the district level is a main contribution of this article. Our methodological approach provides also some novelties in the field, the most important being the use of a simultaneous equations model solved with instrumental variables. This allows us to obtain unbiased and efficient estimators in the presence of simultaneity between education and crime. We conclude that exposure to crime, measured by the homicide rate, has a negative and significant impact on academic achievement. This effect is particularly important in the case of students attending schools situated in districts with a lower social development. 相似文献
87.
2019年是中国体育划时代的一年,以《体育强国建设纲要》的颁布为起点开启了体育事业的全新征程。幼儿家庭体育是学前教育的薄弱环节,父母的体育引导是家庭体育的重中之重。采用现象学方法,以幼儿父母访谈为抓手诠释幼儿家庭体育现象。结果认为:父母观念下幼儿家庭体育的掣肘包括主观因素的理念束缚、安全焦虑、指导孱弱、精力局限,客观因素的经济无力、规划无序、保障无依。针对存在障碍提出化解路径:通过革新理念调解传统意识的偏颇,通过制定指南消解育教于体的困惑,通过家园共育缓解精力、经济的压力,通过社会支持纾解供需之间的失衡。 相似文献
88.
This paper addresses current issues in deaf education including poor academic progress and employment outcomes of individuals who are deaf and hard of hearing (D/HH) as well as provides suggestions for improving overall academic achievement of this population. Specifically, three instructional strategies are recommended for teachers: choral responding, response cards, and peer tutoring. These three strategies have been shown to increase active student responding in classrooms for children who are typically developing and children who have disabilities. For international deaf students in countries that may rely on volunteers who lack basic requisite skills these general education teaching strategies are easy to use even by novice teachers. Recommendations are tendered for how teachers can include these simple teaching strategies in classrooms serving students who are D/HH. 相似文献
89.
Qianqian Zhou Tze Ping Loh Tony Badrick Chun Yee Lim 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2021,31(2)
IntroductionIt is unclear what is the best strategy for applying patient-based real-time quality control (PBRTQC) algorithm in the presence of multiple instruments. This simulation study compared the error detection capability of applying PBRTQC algorithms for instruments individually and in combination using serum sodium as an example.Materials and methodsFour sets of random serum sodium measurements were generated with differing means and standard deviations to represent four simulated instruments. Moving median with winsorization was selected as the PBRTQC algorithm. The PBRTQC parameters (block size and control limits) were optimized and applied to the four simulated laboratory data sets individually and in combination.ResultsWhen the PBRTQC algorithm were individually optimized and applied to the data of the individual simulated instruments, it was able to detect bias several folds faster than when they were combined. Similarly, the individually applied algorithms had perfect error detection rates across different magnitudes of bias, whereas the error detection rates of the algorithm applied on the combined data missed smaller biases. The performance of the individually applied PBRTQC algorithm performed more consistently among the simulated instruments compared to when the data were combined.DiscussionWhile combining data from different instruments can increase the data stream and hence, increase the speed of error detection, it may widen the control limits and compromising the probability of error detection. The presence of multiple instruments in the data stream may dilute the effect of the error when it only affects a selected instrument. 相似文献
90.
Mario Mali
ki Joseph Costello Juan Pablo Alperin Lauren A. Maggio 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2021,31(2)
IntroductionWhile early commenting on studies is seen as one of the advantages of preprints, the type of such comments, and the people who post them, have not been systematically explored.Materials and methodsWe analysed comments posted between 21 May 2015 and 9 September 2019 for 1983 bioRxiv preprints that received only one comment on the bioRxiv website. The comment types were classified by three coders independently, with all differences resolved by consensus.ResultsOur analysis showed that 69% of comments were posted by non-authors (N = 1366), and 31% by the preprints’ authors themselves (N = 617). Twelve percent of non-author comments (N = 168) were full review reports traditionally found during journal review, while the rest most commonly contained praises (N = 577, 42%), suggestions (N = 399, 29%), or criticisms (N = 226, 17%). Authors’ comments most commonly contained publication status updates (N = 354, 57%), additional study information (N = 158, 26%), or solicited feedback for the preprints (N = 65, 11%).ConclusionsOur results indicate that comments posted for bioRxiv preprints may have potential benefits for both the public and the scholarly community. Further research is needed to measure the direct impact of these comments on comments made by journal peer reviewers, subsequent preprint versions or journal publications. 相似文献