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   56615篇
  免费   1088篇
  国内免费   748篇
教育   34499篇
科学研究   8768篇
各国文化   400篇
体育   4568篇
综合类   1925篇
文化理论   289篇
信息传播   8002篇
  2022年   440篇
  2021年   1203篇
  2020年   1076篇
  2019年   879篇
  2018年   1102篇
  2017年   1191篇
  2016年   1085篇
  2015年   1565篇
  2014年   2327篇
  2013年   6550篇
  2012年   3115篇
  2011年   3334篇
  2010年   2927篇
  2009年   2667篇
  2008年   2708篇
  2007年   2969篇
  2006年   2868篇
  2005年   2400篇
  2004年   1440篇
  2003年   1255篇
  2002年   1251篇
  2001年   1291篇
  2000年   1026篇
  1999年   1012篇
  1998年   630篇
  1997年   554篇
  1996年   538篇
  1995年   429篇
  1994年   406篇
  1993年   316篇
  1992年   429篇
  1991年   414篇
  1990年   379篇
  1989年   398篇
  1988年   352篇
  1987年   328篇
  1986年   335篇
  1985年   378篇
  1984年   307篇
  1983年   310篇
  1982年   241篇
  1981年   237篇
  1980年   231篇
  1979年   334篇
  1978年   232篇
  1977年   211篇
  1976年   186篇
  1975年   167篇
  1974年   170篇
  1973年   164篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
Abstract

This paper provides a methodology to study the characteristics of the research output from a university department. The faculty publications and their cited references over a 10-year period were used as the basis for this study to identify their publishing patterns and the types of material they are publishing; a core set of journals and other resources they are publishing in and citing over this period; the characteristics of the journals in which they publish and cite; the degree of openness of their publications and their citation advantage; and the age of resources that are referenced.  相似文献   
12.
ABSTRACT

This forum brings together food, (in)security, and communication. The authors participating in this forum center communication as both process and tool for understanding, mitigating, and making meaning of food (in)security. The nine authors together discuss the role of communication in food (in)security, the central challenges for scholars and practitioners working on food (in)security, and the creative possibilities and impacts influencing the future of food (in)security. The forum produces a call for applied scholars to re-imagine communication frameworks in order to make meaningful differences in their communities.  相似文献   
13.
Abstract

In an economic climate when colleges can no longer presume that legislators see institutions of higher learning as tacit public goods, institutions around the country are facing budget cuts. This article presents a case study of the experience of a mid-sized public state university and its Library in a budget crisis undergoing a university-wide program prioritization process. The authors review the process of writing three reports on the Library’s value, along with the approach to engaging staff in the process including a retreat. This article raises questions about what every library should consider assessing and provide tools for libraries navigating similar terrain.  相似文献   
14.
ABSTRACT

To better understand doping-related attitude change, it is important to consider not only the amount of thinking (i.e., elaboration) done by message recipients, but also the favourability of their thoughts in response to the proposal, as well as the perceived validity in their thoughts. The main goal of the present study was to analyse the effects of a meta-cognitive process (i.e., thought validation) on attitudes related to doping. Thus, we randomly assigned participants to read a message either against or in favour of legalising several doping behaviours. Participants listed their thoughts regarding the proposal and indicated the perceived validity in their thoughts, then reported their attitudes. As hypothesised, the message against legalisation elicited more unfavourable thoughts and attitudes than the message in favour of legalisation. Most relevantly, the effects of the message direction on attitudes were greater for participants with higher (vs. lower) levels of thought validity. Furthermore, consistent with the thought validation process, results revealed that thought favourability was a better predictor of attitudes for participants with higher (vs. lower) perceived thought validity, indicating that perceiving one’s thoughts as valid plays an important role in persuasion. These findings provide novel insights for research and interventions regarding doping in sports.  相似文献   
15.
The purpose of this article was to systematically review the available research on learner characteristics that influence the treatment effectiveness of early literacy interventions. Meta‐analytic procedures were applied to a total of 30 studies that met the inclusionary and exclusionary criteria. Mean average effect sizes were computed for seven primary learner characteristic categories: (1) rapid naming, (2) alphabetic principle, (3) phonological awareness, (4) problem behavior, (5) memory, (6) IQ, and (7) demographic. The primary learner characteristics that influenced the treatment responsiveness of early literacy interventions were, in order of magnitude, rapid naming, problem behavior, phonological awareness, alphabetic principle, memory, IQ, and demographics. With the exception of the demographic category, the obtained effect sizes for the primary learner characteristics were moderately large. The demographic primary learner characteristic (i.e., disability, ethnicity, grade‐level status) of children was not statistically (p < 0.05) distinct from zero. The findings, limitations, and future research needs are discussed.  相似文献   
16.
游泳运动员专项始训年龄段运动素质的生理特点分析   总被引:3,自引:0,他引:3  
本文通过文献资料法、常规数理统计法及调查访问法 ,对我国部分优秀游泳运动员各训练阶段的年龄参数进行调查研究 ,并从运动生理学角度对专项始训年龄段的运动员运动素质的生理特点进行分析 ,发现 12 - 14岁是年龄组运动员开始专项训练的适宜年龄段 ,运动员的运动素质在此年龄段已有一定的发展 ,有的还处在发展敏感期 ,能达到专项训练的要求。  相似文献   
17.
对二十世纪中国诗歌中写“树”诗以及一些“树”的意象进行了归纳、整理,分析不同时期“树”诗的思想内涵和艺术特征,指出了它们与古典诗歌不同的新的特质,呼吁建构一套能解决中国现代诗歌实际的诗歌理论。  相似文献   
18.
谭嗣同特殊的家庭生活、丰富的社会阅历、良好的学识修养以及深刻的思想言行,展示了谭氏的恢弘气度、过人胆 略、顽强意志、强烈使命感、深厚同情心以及旺盛求知俗等主要人格特质。  相似文献   
19.
中文译著中外国个人责任者标目的选取   总被引:4,自引:1,他引:3  
规范工作是图书馆编目工作中非常重要的一部分。清华大学图书馆现已建立了名称规范文档,实现了规范控制,使得责任者标目的选取日趋规范,进一步增强了书目的检索功能和集中功能。在各种标目的选取中,中文译著中外国个人责任者的标目选取最为复杂,本文将从多方面对此进行探讨,并针对当前工作中存在的具体问题提出建议。  相似文献   
20.
科技期刊编排标准化的影响因素与对策   总被引:6,自引:2,他引:4  
刘国炳 《编辑学报》2003,15(6):409-410
科技期刊编排标准化规范化工作中还存在不少问题,主要来自6个方面因素的影响。应进一步采取相应的推进对策。  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