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   12070篇
  免费   171篇
  国内免费   8篇
教育   8624篇
科学研究   1253篇
各国文化   100篇
体育   730篇
综合类   6篇
文化理论   84篇
信息传播   1452篇
  2022年   72篇
  2021年   149篇
  2020年   221篇
  2019年   296篇
  2018年   449篇
  2017年   442篇
  2016年   415篇
  2015年   257篇
  2014年   404篇
  2013年   2296篇
  2012年   309篇
  2011年   335篇
  2010年   294篇
  2009年   273篇
  2008年   317篇
  2007年   274篇
  2006年   261篇
  2005年   233篇
  2004年   256篇
  2003年   172篇
  2002年   188篇
  2001年   233篇
  2000年   242篇
  1999年   232篇
  1998年   133篇
  1997年   161篇
  1996年   160篇
  1995年   103篇
  1994年   135篇
  1993年   99篇
  1992年   190篇
  1991年   144篇
  1990年   142篇
  1989年   159篇
  1988年   146篇
  1987年   126篇
  1986年   126篇
  1985年   135篇
  1984年   95篇
  1983年   110篇
  1982年   83篇
  1981年   86篇
  1980年   77篇
  1979年   126篇
  1978年   81篇
  1977年   83篇
  1976年   67篇
  1975年   65篇
  1974年   64篇
  1973年   60篇
排序方式: 共有10000条查询结果,搜索用时 375 毫秒
81.
This research examines special needs education professional development needs among both general and special education schoolteachers in northern Malawi. A semi‐structured questionnaire with open and close‐ended questions was used for the research. Quantitative and thematic analyses were conducted to determine the extent to which teachers believe that students with disabilities should be educated together with students without disabilities, the importance of professional development for teaching students with disabilities, prioritised professional development needs regarding special education knowledge, and self‐identified needs for successful special education classrooms. Results indicate that teachers are generally in favour of inclusive practices and identify a high need for special education professional development. Participants identified training and resources to teach students with visual impairments or auditory impairments as a high priority. Participants noted a need for improved infrastructure, more educational materials, and recognition by the government for work in special education.  相似文献   
82.
To explore the university experiences of students with learning disabilities (LD), 63,802 responses to the 2014 Student Experience in the Research University Survey were analyzed. Compared to other students, those with self‐reported LD (5.96 percent) had difficulty with assignments and had more obstacles caused by nonacademic responsibilities and imposed by their skill levels. Students with self‐reported LD sensed more bias toward people with disabilities on campus, and they were less satisfied with their overall experience. Interactions between disability status and age suggested even more challenges for older students who self‐reported LD. Approximately one‐third of students who self‐reported LD received accommodations. The rate of accommodations was higher among individuals who were wealthy, who lived alone, and who were out‐of‐state students. Compared to students who self‐reported LD but reported no accommodations, those with accommodations had more contact with faculty and less difficulty with assignments.  相似文献   
83.
84.
Cell-cell interactions play a key role in regeneration, differentiation, and basic tissue function taking place under physiological shear forces. However, current solutions to mimic such interactions by micro-patterning cells within microfluidic devices have low resolution, high fabrication complexity, and are limited to one or two cell types. Here, we present a microfluidic platform capable of laminar patterning of any biotin-labeled peptide using streptavidin-based surface chemistry. The design permits the generation of arbitrary cell patterns from heterogeneous mixtures in microfluidic devices. We demonstrate the robust co-patterning of α-CD24, α-ASGPR-1, and α-Tie2 antibodies for rapid isolation and co-patterning of mixtures of hepatocytes and endothelial cells. In addition to one-step isolation and patterning, our design permits step-wise patterning of multiple cell types and empty spaces to create complex cellular geometries in vitro. In conclusion, we developed a microfluidic device that permits the generation of perfusable tissue-like patterns in microfluidic devices by directly injecting complex cell mixtures such as differentiated stem cells or tissue digests with minimal sample preparation.  相似文献   
85.
Within the school of thought known as Critical Thinking, identifying or finding missing assumptions is viewed as one of the principal thinking skills. Within the new subject in schools and colleges, usually called Critical Thinking, the skill of finding missing assumptions is similarly prominent, as it is in that subject's public examinations. In this article we examine how school‐ and college‐focused texts explain and teach ‘this very important skill’. The same texts also deal with the nature of assumptions, validity and the role of stated reasons in arguments, and the way these matters are tackled will also be examined in our inquiry. In addition we explore what respected contributors to the critical thinking movement have had to say about some of these issues.  相似文献   
86.
87.
In the article we solve path planning task for an agent being multirotor unmanned aerial vehicle (multicopter). We propose an approach of estimating path geometry constraints based on UAV flight dynamics model and control constraints. Than we introduce a new path finding method which takes into consideration those geometry constraints and study this method both theoretically and empirically.  相似文献   
88.
This article analyzes the situation surrounding the education of the disabled in Kyrgyzstan. We provide a detailed discussion of the national legal and regulatory framework that guarantees the rights of persons with disabilities to education. We describe the actual situation in the country concerning access to education for this section of the population as well as other factors that impact it.  相似文献   
89.
90.
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