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   8513篇
  免费   92篇
  国内免费   6篇
教育   5889篇
科学研究   1108篇
各国文化   42篇
体育   471篇
综合类   15篇
文化理论   132篇
信息传播   954篇
  2023年   37篇
  2022年   61篇
  2021年   79篇
  2020年   129篇
  2019年   184篇
  2018年   323篇
  2017年   393篇
  2016年   426篇
  2015年   292篇
  2014年   273篇
  2013年   1002篇
  2012年   369篇
  2011年   379篇
  2010年   280篇
  2009年   168篇
  2008年   206篇
  2007年   226篇
  2006年   135篇
  2005年   779篇
  2004年   573篇
  2003年   384篇
  2002年   223篇
  2001年   163篇
  2000年   129篇
  1999年   102篇
  1998年   76篇
  1997年   58篇
  1996年   72篇
  1995年   39篇
  1994年   47篇
  1993年   31篇
  1992年   56篇
  1991年   58篇
  1990年   42篇
  1989年   49篇
  1988年   45篇
  1987年   38篇
  1986年   43篇
  1985年   42篇
  1984年   39篇
  1983年   22篇
  1982年   36篇
  1981年   26篇
  1980年   24篇
  1979年   38篇
  1978年   31篇
  1977年   22篇
  1974年   23篇
  1972年   26篇
  1971年   19篇
排序方式: 共有8611条查询结果,搜索用时 15 毫秒
61.
This article is the third in a series reporting on the changes in attitudes and interests‐‐mainly with respect to physics‐of several hundred students as they proceed through the Danish upper secondary school (Gymnasium). It concentrates on the results of the final investigation which took place shortly before the students leave the school.  相似文献   
62.
This article deals with differentiation of teaching methods and extra time in class for pupils with dyslexia by English as a Foreign Language (EFL) teachers in two Greek state secondary schools. Activity theory is applied to analyse the contradictions that emerge around the issue of differentiation for pupils with dyslexia from data compiled from interviews with teachers, pupils and parents and field notes from lesson observations across two schools. The analysis shows that contradictions are created when participants try to achieve their goals for differentiation by lack of teachers’ knowledge, inadequate diagnosis, unclear school and Ministry policy, short duration of lessons and the number of pupils in class. The findings suggest the necessity of teacher training in dyslexia and the improvement of school and Ministry policy.  相似文献   
63.
Polarography     
J Heyrovsky’s invention of polarography in which a dropping mercury electrode is used in the electrochemical cell revolutionised electroanalysis, study of electrode kinetics and adsorption studies on mercury electrodes. Polarography has also directly contributed to the development of new and innovative ideas in electrochemical techniques, instrumentation and applications  相似文献   
64.
65.
This paper considers the history of the emergence and development of cooperative cataloging in Russia and abroad and presents the first projects and programs in the field of cooperative cataloging: CONSER, NACO, BIBCO, and PCC. It elucidates the activity of the OCLC Center and Consortium of European Scientific Libraries, which are the first-rate international cooperative associations, as well as the ARBIKON Association and LIBNET centers which are Russian centers of cooperative cataloging.  相似文献   
66.
This paper analyzes modern information technologies as applied in the political environment and considers the content and peculiarities of using IT programs in strategic political modeling.  相似文献   
67.
The problem of the construction of the optimal model of the automated control system of a Russian higher-education institution (the ACS of an RHEI) is studied. This term appeared in the 1970s–1980s and served as the beginning of a project that covered more than 50 of the largest higher-education institutions of the country and is also relevant today. Two main approaches to construction of an automated control system of Russian higher-education institutions are specified, viz., the development of a system using its own resources and the use of the product from a third-party developer. Examples of the application of these approaches are given and the structure of the elements (modules) of the systems is described. The necessity to search for the optimal structure of the elements included in the ACS of an RHEI is specified for most educational organizations taking their dimensions into account and their specific sectoral character, as well as the total expenditures for the acquisition (development) and support of the systems. An example of the structure of the optimal model and a third (combined) approach to its construction is given.  相似文献   
68.
The main aspects of the creation of a monitoring system for the research activities of the members of a higher-education institution are considered. The scientific activities of the lecturers and members of Turgenev Orel State University is used as the basis. It is expected that this system will be an efficient tool for optimal managerial decisions at all levels.  相似文献   
69.
V. K. Wadhawan 《Resonance》2005,10(11):27-41
A structure is an assembly that serves an engineering function. It is reasonable to expect that all engineering design should be smart, and not dumb. But one can still make a distinction between smartly designed structures and smart structures. The latter term has acquired a specific technical meaning over the last few decades. A smart structure is that which has the ability to respond adaptively in a pre-designed useful and efficient manner to changes in environmental conditions, including any changes in its own condition; the response is adaptive in the sense that two or more stimuli or inputs may be received as anticipated and yet there is a single response function as per design. Smartness ensures that the structure gives optimum performance under a variety of environmental conditions. While structures with some degree of smartness have been designed from times immemorial, the current activity and excitement in this field derives its impetus from the level of sophistication achieved in materials science, information technology, measurement science, sensors, actuators, signal processing, nanotechnology, cybernetics, artificial intelligence, and biomimetics.  相似文献   
70.
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