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   5678篇
  免费   52篇
  国内免费   47篇
教育   3124篇
科学研究   1019篇
各国文化   36篇
体育   809篇
综合类   102篇
文化理论   18篇
信息传播   669篇
  2024年   24篇
  2023年   70篇
  2022年   75篇
  2021年   60篇
  2020年   43篇
  2019年   59篇
  2018年   43篇
  2017年   30篇
  2016年   39篇
  2015年   59篇
  2014年   277篇
  2013年   140篇
  2012年   305篇
  2011年   425篇
  2010年   194篇
  2009年   135篇
  2008年   323篇
  2007年   382篇
  2006年   339篇
  2005年   329篇
  2004年   303篇
  2003年   244篇
  2002年   216篇
  2001年   155篇
  2000年   166篇
  1999年   98篇
  1998年   48篇
  1997年   55篇
  1996年   41篇
  1995年   59篇
  1994年   45篇
  1993年   46篇
  1992年   56篇
  1991年   43篇
  1990年   81篇
  1989年   95篇
  1988年   47篇
  1987年   64篇
  1986年   56篇
  1985年   61篇
  1984年   40篇
  1983年   45篇
  1982年   41篇
  1981年   28篇
  1980年   33篇
  1959年   20篇
  1957年   18篇
  1956年   19篇
  1955年   19篇
  1954年   19篇
排序方式: 共有5777条查询结果,搜索用时 8 毫秒
991.
Since fall 2009, reference librarians at The George Washington University's Himmelfarb Health Sciences Library have been embedded in online classes through Blackboard within the School of Nursing and School of Medicine and Health Sciences. The authors sought to determine the types of questions asked of the librarian, with the goal of informing future interactions with distance education classes to help develop a standard "protocol" for working with this population of students. Eighty-two questions were categorized and qualitatively analyzed. The findings have prompted librarians to explore tools such as Elluminate Live!, a tool that allows librarians to provide synchronous instruction within the Blackboard environment.  相似文献   
992.
Background: Open Access (OA) to scientific information is an important step forward in communication patterns, yet we still need to reinforce OA principles to promote a cultural change of traditional publishing practices. The advantages of free access to scientific information are even more evident in public health where knowledge is directly associated with human wellbeing. Objectives: An OA ‘consolidation’ initiative in public health is presented to show how the involvement of people and institutions is fundamental to create awareness on OA and promote a cultural change. This initiative is developed within the project NEtwork of COllaboration Between Europe and Latin American Caribbean countries (NECOBELAC), financed by the European Commission. Methods: Three actions are envisaged: Capacity building through a flexible and sustainable training programme on scientific writing and OA publishing; creation of training tools based on semantic web technologies; development of a network of supporting institutions. Results: In 2010–2011, 23 training initiatives were performed involving 856 participants from 15 countries; topic maps on scientific publication and OA were produced; 195 institutions are included in the network. Conclusions: Cultural change in scientific dissemination practices is a long process requiring a flexible approach and strong commitment by all stakeholders.  相似文献   
993.
994.
995.
民生,历来是媒体关注的焦点、热点。特别是在新形势下,以民本思想为基点,以平民化的报道方式关注和表现普通百姓生活生产状态的新闻,正越来越成为各级党报的重中之重。  相似文献   
996.
作为一个准备到国外高校学习的群体,留学申请者目前呈现出高度多样化的特点。留学申请者的学习水平和经济状况的差异影响其查找信息的内容和信息检索的途径。通过深入了解和分析留学申请者的个人情况及其申请学校过程中的行为差异.高校能够更为有效地进行资源配置和新生招录。鉴于此,文章通过分析有意赴美留学的学生的个人情况及其信息搜索内容和渠道的不同,对其进行分类.并对其择校行为进行深度分析。  相似文献   
997.
直译和意译是韩汉翻译中常用的方法。直译是既保持原文内容,又保持原文形式的翻译方法。意译,也称为自由翻译,它是只保持原文内容、不保持原文形式的翻译方法。直译与意译相互依存、密不可分,那么,在翻译的过程中怎样把两种翻译方法有机结合起来,把原作的思想、风格传达给读者是极其关键的。  相似文献   
998.
The study focused on social competence (SC) and perceived sense of loneliness of preschool children with hearing loss (HL) in group inclusion (GI, a small group of children with HL is integrated in a standard classroom) and individual inclusion (II, each child with HL is individually integrated into a standard classroom). The relations between these factors and the child's speech intelligibility were performed. Sixty-four children aged 4-7 years participated: 22 from an II and 42 from a GI. SC, perceived sense of loneliness, and speech intelligibility were evaluated through the use of questionnaires completed by the preschool teachers. The results showed that the SC of children in II was higher than the SC of the children in GI, while interacting with normal hearing (NH) children. In GI, the children's SC with other children with HL was higher compared with their SC with NH children. In both groups, there were relationships between speech intelligibility and SC with NH children. In addition, in the II setting, there were relationships between the speech intelligibility and the perceived sense of loneliness. These relationships were not found in the GI setting. The findings support the need for coenrollment of preschool children with HL and emphasize the crucial impact of speech intelligibility of children with HL on the success of their social enrollment with NH children, already at a young age.  相似文献   
999.
针对结构力学课程的学习特点,将结构力学授课方式由单一的纯课堂教学改为多元教学模式,其内容包括,结构力学知识主线提炼和精讲,学生自教与教师点评、专家案例讲座。多种教学方式相互穿插、灵活运用,使结构力学课程的学习变得生动有趣,进而引导学生养成良好的自主学习习惯。实践证明,多元教学模式不仅提高了学生学习的兴趣,锻炼了学生分析问题、解决问题的能力,而且能够满足现场工程师人才的培养要求。  相似文献   
1000.
本文以乙醚作溶剂,用索式提取法提取红瓜子油后,用氢氧化钾-甲醇溶液进行甲酯化处理,再用气相色谱-质谱联用仪(GC/MS)进行脂肪酸组成与含量分析测定。结果表明,在红瓜子油中脂肪酸成分有13种,主要为亚油酸(64.55%)、油酸(13.59%)、棕榈酸(12.19%)、硬脂酸(8.78%)等。本实验结果为开发利用红瓜子的资源和进一步的研究提供依据。  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