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   1748篇
  免费   21篇
  国内免费   1篇
教育   1257篇
科学研究   113篇
各国文化   26篇
体育   249篇
文化理论   28篇
信息传播   97篇
  2023年   17篇
  2022年   35篇
  2021年   42篇
  2020年   74篇
  2019年   106篇
  2018年   143篇
  2017年   136篇
  2016年   134篇
  2015年   92篇
  2014年   89篇
  2013年   396篇
  2012年   66篇
  2011年   54篇
  2010年   43篇
  2009年   41篇
  2008年   26篇
  2007年   29篇
  2006年   22篇
  2005年   23篇
  2004年   17篇
  2003年   25篇
  2002年   14篇
  2001年   15篇
  2000年   10篇
  1999年   6篇
  1998年   10篇
  1997年   4篇
  1996年   12篇
  1995年   13篇
  1994年   10篇
  1993年   3篇
  1992年   5篇
  1991年   4篇
  1990年   5篇
  1989年   8篇
  1986年   2篇
  1985年   5篇
  1984年   2篇
  1983年   2篇
  1977年   6篇
  1976年   5篇
  1975年   2篇
  1974年   3篇
  1972年   1篇
  1970年   2篇
  1967年   1篇
  1960年   1篇
  1959年   1篇
  1956年   1篇
  1948年   1篇
排序方式: 共有1770条查询结果,搜索用时 468 毫秒
151.
A double-blind randomized controlled trial of n-3 long-chain polyunsaturated fatty acid (n-3 LCPUFA) supplementation or matching placebo during third trimester of pregnancy was conducted within the COPSAC2010 mother-child cohort consisting of 736 women and their children. The objective was to determine if maternal n-3 LCPUFA pregnancy supplementation affects offspring neurodevelopment until 6 years. Neurodevelopment was evaluated in 654 children assessing age of motor milestone achievement, language development, cognitive development, general neurodevelopment, and emotional and behavioral problems. Maternal n-3 LCPUFA supplementation during pregnancy improved early language development and reduced the impact of emotional and behavioral problems. The n-3 LCPUFA supplementation was in boys associated with the earlier achievement of gross motor milestones, improved cognitive development, and a reduced impact of emotional and behavioral problems.  相似文献   
152.
Research in Higher Education - Research consistently shows that higher-education participation has positive impacts on individual outcomes. However, few studies explicitly consider differences in...  相似文献   
153.
Research in Science Education - This research draws on Legitimation Code Theory (LCT) to understand the epistemic dimension of the higher education classroom discourse of a professor who is well...  相似文献   
154.

Traditionally colleges have relied on standalone non-credit-bearing developmental education (DE) to support students academically and ensure readiness for college-level courses. As emerging evidence has raised concerns about the effectiveness of DE courses, colleges and states have been experimenting with approaches that place students into credit-bearing coursework more quickly. To better understand which types of students might be most likely to benefit from being placed into college-level math coursework, this study examines heterogeneity in the causal effects of placement into college-level courses using a regression discontinuity design and administrative data from the state of Texas. We focus on student characteristics that are related to academic preparation or might signal a student’s likelihood of success or need for additional support and might therefore be factors considered for placement into college-level courses under “holistic advising” or “multiple measures” initiatives. We find heterogeneity in outcomes for many of the measures we examined. Students who declared an academic major designation, had bachelor’s degree aspirations, tested below college readiness on multiple subjects, were designated as Limited English Proficiency (LEP), and/or were economically disadvantaged status were more likely to benefit from placement into college-level math. Part-time enrollment or being over the age of 21 were associated with reduced benefits from placement into college-level math. We do not find any heterogeneity in outcomes for our high school achievement measure, three or more years of math taken in high school.

  相似文献   
155.
López  Paula  Torrance  Mark  Rijlaarsdam  Gert  Fidalgo  Raquel 《Reading and writing》2021,34(7):1741-1767
Reading and Writing - This study aimed to establish (a) whether teaching students revision skills provides benefit over and above teaching strategies for setting explicit goals for the...  相似文献   
156.
157.
We propose the use of ISI-JCR categories as units of cocitation and measurement for the construction of heliocentric maps. The use of a spatial metaphor allows us to illustrate, analyze and compare domains in terms of the categories and their interconnections or links. We can also move around within the structure of these domains for further analysis, and access the documents associated to the categories and to the links that cocite or relate them.  相似文献   
158.
A computer-based foreign language lesson was developed to study the effects of text, context, and gender on listening comprehension and motivation. A total of 109 fifth grade students responded to spoken commands, with text and a story absent or present. Presenting spoken language with text appeared to assist the development of listening skills. When text was present, students made fewer errors on the subsequent comprehension test and gave higher relevance and confidence motivation ratings than when text was absent. Girls demonstrated higher achievement than did boys and rated the lesson higher, indicating that girls tend to like different kinds of software than do boys. An interaction between context and gender regarding achievement was significant: Girls, but not boys, made fewer errors after a story-embedded lesson.  相似文献   
159.
在过去的30年中,西班牙的高等教育经历了许多变化。在1983年,由于人们对私立大学的合法性的认可开始了高等教育的竞争状态。1998年以来,由于学生人数的减少以及人们对高等教育需求的下降,进一步推进了高等教育的改革。2001年,西班牙政府颁布了一项新制度以推动公立大学的市场化行为和私有化运行。尽管目前来评价这些变化的作用可能为时尚早,因为大学公共资金拨付制度仍保留不变,而这是今后需要调整的关键问题,这样才能为高等教育提供真正的竞争条件。虽然市场已经进入到西班牙高等教育领域中,但是公立大学源源不尽的公共资金将是阻止一个真正公平竞争的市场形成的一股巨大的力量。  相似文献   
160.
Studies of student re-enrolment patterns in higher education constitute, along with traditional studies of persistence and dropout, a key element for improving the quality of higher education institutions. However, these studies tend to be limited as they are centred on a single institution, due to the lack of national-scale data sets for monitoring students between different institutions. Using a longitudinal population-based data set provided by the Catalan University Assurance Agency (AQU), which includes information records on 21,473 undergraduate students, this paper aims to develop and test an exploratory model of student re-enrolment, specifically in the Catalan public university system. We are not only interested in student re-enrolment, but also in whether they do so during the first year after dropout or in the same area of knowledge. Results from logistic regression analysis revealed that although most students return to the university system in the first year after dropout, many of these change to a different area of knowledge, which is clear evidence of dysfunctional and inefficient guidance systems and university entrance. Findings provide a more accurate and complete picture of student re-enrolment behaviour and suggest the need to develop targeted policies to improve the efficiency and effectiveness of our university systems.  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