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   2142篇
  免费   36篇
  国内免费   1篇
教育   1569篇
科学研究   121篇
各国文化   19篇
体育   271篇
文化理论   51篇
信息传播   148篇
  2023年   20篇
  2022年   41篇
  2021年   62篇
  2020年   97篇
  2019年   178篇
  2018年   198篇
  2017年   189篇
  2016年   152篇
  2015年   102篇
  2014年   82篇
  2013年   487篇
  2012年   67篇
  2011年   60篇
  2010年   48篇
  2009年   33篇
  2008年   24篇
  2007年   30篇
  2006年   31篇
  2005年   21篇
  2004年   17篇
  2003年   22篇
  2002年   14篇
  2001年   15篇
  2000年   11篇
  1999年   13篇
  1998年   9篇
  1997年   8篇
  1996年   10篇
  1995年   10篇
  1994年   8篇
  1993年   10篇
  1992年   7篇
  1991年   9篇
  1990年   13篇
  1989年   4篇
  1988年   3篇
  1987年   7篇
  1986年   8篇
  1985年   6篇
  1984年   3篇
  1981年   4篇
  1980年   3篇
  1979年   4篇
  1978年   7篇
  1977年   5篇
  1976年   4篇
  1974年   2篇
  1973年   3篇
  1970年   3篇
  1963年   3篇
排序方式: 共有2179条查询结果,搜索用时 15 毫秒
991.
This article presents a bibliometric analysis of the financing of innovation during the period 2001–2016. Among the most prominent journals in the field are Research Policy, Technovation and Small Business Economics; among the most influential authors are Petersen, Hall, Himmelberg, Lerner and Brown; and the most connected documents are those by Hall (2002) and Brown, Fazzari, and Petersen (2009). The field is fragmented and uses a variety of financial theoretical models. Salient topics in the field are financial constraints, funding sources (internal and external), capital structure, venture capital and financing of technology companies.  相似文献   
992.
993.
In this study, a reading-level-match design was used to test the hypothesis that children with reading disability (RD) are characterized by poor phonological skills, and that a developmental lag, as opposed to a specific deficit, will be found in transparent orthographies. Spanish has a transparent orthography and thus children with RD should not show severe difficulties in the use of the phonological route, as in the English language. A sample of 118 participants was selected and organized into three different groups: 40 with RD, 38 normal readers matched in age with the former, and 40 younger normal readers at the same reading level as those with RD. Two experiments were conducted to investigate the effects of lexicality, word frequency, word length, and positional frequency of syllables on lexical decision making and word-naming performance. While the participants were performing the naming task, we recorded what they read to subsequently analyze the form as well as the frequency of naming errors. The present study provides evidence for a deficit in phonological processing in a transparent orthography, particularly in nonword reading, because there were differences between the reading-level-matched groups.  相似文献   
994.
This project reflects on the way in which students in a situation of social risk construct their identity. Based on the reflections and theories originating from research conducted on individuals and collective groups in a situation of social exclusion due to disability, social class or ethnicity, this paper will analyse the conflicts these students have to deal with when constructing their identity. It also examines the challenge that education has to face to turn those conflicts into opportunities that will help to build life projects with which they can freely identify. For this reason, from a critical perspective, the school’s role in constructing identity will be analysed, as will the way in which it affects children and adolescents from minority groups. In the same way, we will study and put forward some different channels aimed at providing more equal educational attention to those identities that are depreciated in neoliberal society.  相似文献   
995.
Middle school students are learning about climate change in large part through textbooks used in their classes. Therefore, it is crucial to understand how the language employed in these materials frames this topic. To this end, we used systemic functional analysis to study the language of the chapters related to climate change in four sixth grade science textbooks adopted in the state of California. The linguistic variables investigated were: types of nominal groups; processes; circumstances; and the modality system. Our findings showed that these textbooks framed climate change as uncertain in the scientific community – both about whether it is occurring as well as about its human-causation. The implications for science education are discussed in relation to how the current political and public discourses of climate change, rather than the scientific discourse, is influencing how textbooks discuss this topic.  相似文献   
996.
In this paper we will show some of the results of research which took place in the Principality of Asturias (Spain). Its purpose was finding out the gender discourses used by nursery teachers. Although we will not provide an exhaustive list of all the conclusions reached so far, we will put forward one of the aspects which has been developed throughout the investigation; that is, we will discuss some of our observations and hypotheses on the differences observed by the teachers in boys and girls' caring and supporting behaviours. In order to do so, we focus on the type of discourse related to the ethic of care. We consider it a tool which allows teachers to build a type of narrative in which boys and girls are presented as opposites, relational and different from one another.  相似文献   
997.
Different visualization techniques have been used for teaching chemistry concepts. Previous studies have shown that when molecular animations and video demonstrations are used, students seem to better correlate all three levels of representation: macroscopic, submicroscopic, and symbolic. This thinking process allows the students to improve their conceptual understanding and ability to create dynamic mental models. In this study, general chemistry students viewed three experiments involving dynamic fluid equilibrium in a graphic design, a video demonstration, and a molecular animation. The study investigated whether video demonstrations or particulate animations helped the students' conceptual understanding, and if the order of visualizations (video or animation first) produced any differences. Students showed improvement after each visualization. Surprisingly, there was significant improvement in responses between the first and second visualization. This work shows the importance of combining both types of visualizations, but it does not indicate a preference toward a specific order.  相似文献   
998.
A project in the 7th and 8th grades aimed at providing the best possible school conditions to promote development of the abilities of children aged 13–14. The children's activity was founded on two main psychological and pedagogical principles: adequate motivation, and individual differentiation. The children's development was monitored by means of intelligence and personality tests. The main results were as follows: there was a pronounced improvement in the performance tasks, but no significant development in verbal tasks; the role of inner motives had greatly increased but the pupils had become more tense and impatient by the end of the school year. Necessary alterations in the project are outlined.  相似文献   
999.

The present study aimed to investigate the double-deficit hypothesis (DDH) in an orthography of intermediate depth. Eighty-five European Portuguese-speaking children with developmental dyslexia, aged 7 to 12, were tested on measures of phonological awareness (PA), naming speed (NS), reading, and spelling. The results indicated that PA and NS were not significantly correlated, and that NS predicts reading fluency (but not reading accuracy and spelling) beyond what is accounted for by PA. Although the majority of the children with developmental dyslexia have double deficit (62.4%), some children have a single phonological deficit (24.7%) or a single NS deficit (8.2%). Children with a double deficit were not more impaired in reading fluency, reading accuracy, and spelling than both single-deficit subtypes. In conclusion, the findings of the present study are partially consistent with the DDH and provide evidence for the multifactorial model of developmental dyslexia. Implications of the DDH for an orthography of intermediate depth are emphasized.

  相似文献   
1000.
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