全文获取类型
收费全文 | 56615篇 |
免费 | 1088篇 |
国内免费 | 748篇 |
专业分类
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 |
出版年
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.
Megan K. Schraedley Hamilton Bean Sarah E. Dempsey Mohan J. Dutta Kathleen P. Hunt Sonia R. Ivancic 《Journal of Applied Communication Research》2020,48(2):166-185
ABSTRACTThis 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.
AbstractIn 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.
Javier Horcajo David Santos Joshua J. Guyer Rafael Mateos 《Journal of sports sciences》2020,38(19):2242-2252
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.
J. Ron Nelson Gregory J. Benner Jorge Gonzalez 《Learning disabilities research & practice》2003,18(4):255-267
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.
刘克礼 《六盘水师范高等专科学校学报》2003,15(3):22-25
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
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