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   3488篇
  免费   37篇
  国内免费   6篇
教育   2170篇
科学研究   483篇
各国文化   17篇
体育   275篇
综合类   8篇
文化理论   43篇
信息传播   535篇
  2022年   17篇
  2021年   22篇
  2020年   44篇
  2019年   57篇
  2018年   115篇
  2017年   155篇
  2016年   138篇
  2015年   88篇
  2014年   106篇
  2013年   535篇
  2012年   120篇
  2011年   144篇
  2010年   116篇
  2009年   85篇
  2008年   78篇
  2007年   112篇
  2006年   61篇
  2005年   77篇
  2004年   65篇
  2003年   60篇
  2002年   53篇
  2001年   86篇
  2000年   70篇
  1999年   61篇
  1998年   54篇
  1997年   42篇
  1996年   51篇
  1995年   23篇
  1994年   33篇
  1993年   20篇
  1992年   45篇
  1991年   43篇
  1990年   27篇
  1989年   38篇
  1988年   33篇
  1987年   29篇
  1986年   35篇
  1985年   39篇
  1984年   37篇
  1983年   22篇
  1982年   33篇
  1981年   22篇
  1980年   16篇
  1979年   33篇
  1978年   28篇
  1977年   21篇
  1975年   15篇
  1974年   21篇
  1972年   24篇
  1971年   18篇
排序方式: 共有3531条查询结果,搜索用时 109 毫秒
51.
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   
52.
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   
53.
Given that physical activity (PA) tends to decrease with age during adolescence, addressing factors that affect change is important. This study examined the similarity and interdependence of PA as influenced by psychosocial factors among adolescent best friend dyads. A total of 660 adolescents, representing 330 best friend dyads, completed questionnaires with regard to PA, sitting time, perceived exercise benefits and barriers, physical self-perception and social support for PA. Dyads were also identified as reciprocal and non-reciprocal best friends; reciprocal means that both considered each other best friends and non-reciprocal were those in which only one considered the other a best friend. Data were analysed using a hierarchical linear model framework. Results indicated significant similarities between reciprocal best friend dyads for PA and sitting time, and for sitting time in non-reciprocal best friends (P values <.01). Psychosocial variables were associated with PA in reciprocal best friend dyads and with sitting time in reciprocal and non-reciprocal best friend dyads. Best friend gender, regular sports practice of the person, perceived exercise barriers of the best friend and best friend social support were the best predictors for PA.  相似文献   
54.
The main purpose of this article is to advance an alternative perspective on the relationship between intrinsic and extrinsic motivation, and in particular to examine critically the assertion that these processes are antagonistic such that the will to learn for its own sake is inhibited by the presence of extrinsic, tangible rewards and incentives such as school grades. The presumption of an antagonistic relationship largely depends on the theoretical perspective adopted. An alternative interpretation based on need achievement theory leads to distinctly different conclusions. Exploring this new perspective allows one to identify both the conditions under which intrinsic motives may coexist with extrinsic motives as well as to consider some of the means by which intrinsic motives and caring about learning can be stimulated in their own right in school settings.  相似文献   
55.
56.
This study examines a pre‐school screening survey battery with an aim to validate it in terms of predicting school performance. Subjects participating in the screening were tested at the end of their first year at school. Analysis of the data, using a canonical correlation procedure, suggested elimination of a number of test items ‐‐ age, sex, age of walking, socio‐economic rating, Draw‐a‐Man Test, balance and posture, body image, perceptual motor match, height and weight. Measures of general ability, visual discrimination, visual reception, general development, receptive language, language concepts and positional concepts were the best predictors of school performance.  相似文献   
57.
58.
59.
Russian higher engineering education is undergoing radical reform caused by the new political and economic situation in Russia. The aim of the reform is to develop a flexible system of engineering education under market economy conditions, considering customer interests and international tendencies in engineering education. The major concepts and principles of a complex system for assessing and monitoring the quality of engineering education are outlined.  相似文献   
60.
This study analyses a corpus of argumentative compositions in order to isolate the features of organization pertinent to this genre of writing. A further aim is to compare compositions written by “A” level students and English teachers in order to highlight specific shortcomings of the former. Despite using more cohesive devices and an overabundance of lexical repetition, student writing is less coherent. This is largely because of a lack of global links (between paragraphs), and an inability to properly utilize given information in structuring non-narrative writing. Finally, student writing suffers from presentation of content at the expense of discussion of issue and weighing of views.  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