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   3973篇
  免费   122篇
  国内免费   44篇
教育   2887篇
科学研究   413篇
各国文化   58篇
体育   219篇
综合类   91篇
文化理论   13篇
信息传播   458篇
  2023年   18篇
  2022年   57篇
  2021年   104篇
  2020年   111篇
  2019年   148篇
  2018年   169篇
  2017年   206篇
  2016年   167篇
  2015年   158篇
  2014年   217篇
  2013年   669篇
  2012年   220篇
  2011年   231篇
  2010年   204篇
  2009年   197篇
  2008年   149篇
  2007年   172篇
  2006年   159篇
  2005年   136篇
  2004年   92篇
  2003年   89篇
  2002年   87篇
  2001年   69篇
  2000年   66篇
  1999年   40篇
  1998年   35篇
  1997年   32篇
  1996年   23篇
  1995年   16篇
  1994年   19篇
  1993年   14篇
  1992年   9篇
  1991年   8篇
  1990年   3篇
  1989年   5篇
  1988年   3篇
  1987年   4篇
  1986年   3篇
  1985年   5篇
  1984年   5篇
  1982年   2篇
  1981年   4篇
  1980年   3篇
  1978年   2篇
  1976年   1篇
  1974年   1篇
  1973年   1篇
  1972年   1篇
  1966年   1篇
  1957年   1篇
排序方式: 共有4139条查询结果,搜索用时 15 毫秒
61.
62.
63.
Predoctoral interns' responses to an internship supervision training questionnaire indicated that counseling center interns supervised more trainees, received more supervision in their supervisory roles, reported more supervision training activities, and yielded higher supervisor development scores than did non‐counseling‐center interns. A qualitative analysis of participants' responses showed that non‐counseling‐center interns desired more supervision training and opportunities to provide supervision during their internship year than did counseling center interns.  相似文献   
64.
Murals are particularly visually captivating forms of public art due to their size and accessibility. Mural images also capture public attention and provoke viewers to explore layers of meaning and find hidden stories. They are often in places that people come to visit, study, play, congregate and discuss matters that may relate to the content of the mural. To this end, murals can be effective tools for helping communities think about their environmental issues. This article discusses the Mystic River mural project in Somerville, Massachusetts, USA. It addresses how the local art councils, mural artists, local students, community members and non‐profit organisations collaborated to carry out this ongoing mural project. The purpose of this research is to examine how Mystic River eco‐murals were created, what challenges and benefits the eco‐murals provided, how local social concerns were represented through the eco‐murals, how eco‐murals can continue to promote environmental awareness and inspire youth about their community and the local environment, and how the mural can continue to reflect or affect the meaning of the place. This process can serve as an example for other communities that seek to address their environmental concerns through public art.  相似文献   
65.
A number of authors have presented data that challenge the validity of self-report of strategy use or choice of strategy. We created a multiple-choice measure of students’ strategy use based on the work of Kozminsky, E., and Kozminsky, L. (2001), and tested it with three samples as part of a series of studies testing the fit of the DIME model of reading comprehension. One study was conducted at the high school level (N = 175) and two at the undergraduate level (N = 185 and 737). Over the three studies with three different samples, we found good evidence for the internal consistency reliability and concurrent validity of this type of measure. Commonality analysis suggested that strategy use mainly makes a shared contribution to comprehension with other predictors, especially inference, and to some extent vocabulary, background knowledge, and word reading. The measure was relatively easy to construct and easy to administer to large numbers of students, and showed much higher evidence of concurrent validity than self-ratings of frequency of use of strategies.  相似文献   
66.
就业、创业教育模式新探——以赛扶教育为例   总被引:2,自引:1,他引:1  
赛扶又称"全球大学生企业家联盟",是一个全球性的大学生公益创业实践组织,对大学生的创业、就业素质培养和实践教育具有重要作用。探求赛扶组织成功的奥秘,用心理学、教育学的方法配合调查问卷结果分析其利用社会资源,构建就业、创业教育实践平台模式;体验式就业、创业教育的模式;创业精英意识培养的模式,并对现在的就业、创业教育中的瓶颈问题提出可行性方案,可以帮助学生更好地进行创业、就业。  相似文献   
67.
《电力电子学》多媒体交互式虚拟实验的实现技术   总被引:8,自引:0,他引:8  
该文介绍了针对大学本科基础专业课程《电力电子学》教学课件中虚拟实验的实现技术。Flash软件的ActionScript是一种面向对象的编程方法,通过Flash深入编程,该研究实现了由JAVA编程达到的虚拟试验效果,同时探索了严格意义上的交互式虚拟课件的技术实现方法。  相似文献   
68.
This study examined fidelity of implementation in a randomized trial of Banking Time, a classroom-based intervention intended to improve children's behavior, specifically for those at risk for developing externalizing behavior problems, through improving the quality of teacher–child interactions. The study sample comes from a randomized controlled trial that took place over three years and included 183 teachers and 470 preschool children recruited across three sites. Results exploring fidelity of implementation indicated that Banking Time practices were present across treatment and nontreatment groups. In addition, the presence of more Positive Banking Time Practices accounted for improvements in teacher–child interactions while Restricted Banking Time Practices showed inconsistent patterns, relating both to positive and negative teacher–child interactions. Further, random assignment to Banking Time resulted in the presence of more Positive Banking Time Practices and fewer Restricted Banking Time Practices, which accounted for the improved teacher–child interactions. Thus, findings point to the critical need to better account for intervention fidelity across conditions in randomized trials, allowing for better understanding of the mechanism through which interventions lead to intended outcomes.  相似文献   
69.
非税收入规范化管理研究   总被引:10,自引:0,他引:10  
非税收入是政府收入体系的一个有机组成部分。我国非税收入管理的突出问题是数额大,征收主体多元化,管理规范性差,带来严重负面效应。本文在分析上述问题形成原因的基础上,提出改革和规范我国非税收入管理的思路,即对非税收入的不同种类区别对待,分流归位,依法立项,建立和完善规范化征管体系,并以治本为目的实施财政、行政、法制、投融资等方面的配套改革,文中还就此提出了一系列具体措施建议。  相似文献   
70.
This study provides a detailed report on the synthesis of spherical activated carbon with mesoporous structure using a soluble low molecular weight phenolic resol precursor through an ammonium alginate assisted sol–gel method. The effects of calcinating temperature and the addition of CaCO_3 as a pore-enlarging agent on texture structure and catalytic performance in isobutane dehydrogenation to isobutene were investigated. Characterization of N_2 sorption,mechanical strength tests,and optical photographs confirmed that the obtained carbon materials had high mechanical strength,a good degree of sphericity,and a large surface area. Introducing CaCO_3 as a pore-enlarging agent during the preparation process promoted the formation of a mesoporous structure of carbon spheres and evidently increased the surface area and oxygen content,which can improve isobutane conversion and isobutene selectivity of these carbon spheres. The conversion of isobutane reached up to 28% for this spherical activated carbon,and the selectivity of isobutene reached up to 96%. Isobutane conversion increased with an increase in calcination temperature due to an increase in the oxygen content,whereas the selectivity of isobutene decreased due to the slight decrease in the specific surface area.  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