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   975篇
  免费   15篇
教育   686篇
科学研究   111篇
各国文化   8篇
体育   59篇
综合类   2篇
文化理论   6篇
信息传播   118篇
  2024年   3篇
  2023年   5篇
  2022年   14篇
  2021年   20篇
  2020年   30篇
  2019年   48篇
  2018年   63篇
  2017年   48篇
  2016年   51篇
  2015年   27篇
  2014年   50篇
  2013年   214篇
  2012年   35篇
  2011年   43篇
  2010年   20篇
  2009年   24篇
  2008年   27篇
  2007年   16篇
  2006年   29篇
  2005年   10篇
  2004年   13篇
  2003年   12篇
  2002年   12篇
  2001年   10篇
  2000年   13篇
  1998年   9篇
  1997年   8篇
  1996年   8篇
  1995年   4篇
  1994年   6篇
  1993年   7篇
  1992年   9篇
  1991年   5篇
  1990年   4篇
  1989年   8篇
  1988年   5篇
  1987年   7篇
  1985年   4篇
  1984年   4篇
  1981年   4篇
  1979年   3篇
  1977年   4篇
  1974年   5篇
  1973年   6篇
  1972年   3篇
  1971年   3篇
  1970年   2篇
  1968年   3篇
  1857年   3篇
  1855年   2篇
排序方式: 共有990条查询结果,搜索用时 14 毫秒
31.
Abstract

The Muslim community in Sri Lanka has a pre-Islamic origin. Ethnically they are a mixed group, but changing political fortunes throughout the course of Sri Lankan history have made them realize that their identity lies in holding fast to the religion of Islam and not to any ethnic category. The current Sinhala-Tamil ethnic war has once again reinforced the need to hold on to the religious identity even more tightly. However, recent economic and political changes in the country and changes taking place in the Muslim world have injected new concerns for the community to worry about. The community is well and truly trapped in a political quagmire. This article highlights some aspects of this predicament.  相似文献   
32.
Aging and its effects on a person's quality of life are a growing health concern and burden for many Americans. Recently, studies have shown that adopting certain healthy behaviors may help maintain and or prevent age-related health issues such as cognitive decline. However, many people are unaware of these newfound facts. Furthermore, there is insufficient research evidence to understand how older adults view brain health and the differences between diverse groups of older adults. This study examines brain health knowledge and behaviors among Caucasian and African-American community-dwelling older adults in North Carolina. Findings were significant for level of education and total brain health knowledge scores, though there were no significant differences between races. In addition, there was a significant association between total number of health conditions and total brain health knowledge scores that warrants further study.  相似文献   
33.
In this paper, Alan Rogers draws on his experience in several countries, especially Namibia, to outline ways in which understandings of both training for extension and for adult education are drawing closer together, particularly in a move from a directive approach of trainer and learner through a responsive approach (meeting the learner's needs) to the more recent acknowledgement on both sides of the need for an interactive approach (what the author calls ‘third generation activity'). He suggests that both adult education and extension need new approaches to the training of their field workers.

  相似文献   
34.
35.
36.
This paper examines the recent increase in the concern of adult literacy for citizenship, especially aimed at women in developing societies. It looks at what is happening in this field and why; it examines some of the critiques of this range of activity; and it suggests some alternatives which in the end may be more effective in promoting both literacy learning and the practices of citizenship among women.  相似文献   
37.
Keith Park, a teacher of children with visual impairment and learning disabilities with the Greenwich Visual Impairment Service, describes a series of multisensory interactive drama games re-telling the story of A Christmas Carol by Charles Dickens, following a discussion of the potential uses of literature with people with severe and profound learning disabilities.  相似文献   
38.
39.
In this study, a multiple sample dispenser for precisely metered fixed volumes was successfully designed, fabricated, and fully characterized on a plastic centrifugal lab-on-a-disk (LOD) for parallel biochemical single-end-point assays. The dispenser, namely, a centrifugal multiplexing fixed-volume dispenser (C-MUFID) was designed with microfluidic structures based on the theoretical modeling about a centrifugal circumferential filling flow. The designed LODs were fabricated with a polystyrene substrate through micromachining and they were thermally bonded with a flat substrate. Furthermore, six parallel metering and dispensing assays were conducted at the same fixed-volume (1.27 μl) with a relative variation of ±0.02 μl. Moreover, the samples were metered and dispensed at different sub-volumes. To visualize the metering and dispensing performances, the C-MUFID was integrated with a serpentine micromixer during parallel centrifugal mixing tests. Parallel biochemical single-end-point assays were successfully conducted on the developed LOD using a standard serum with albumin, glucose, and total protein reagents. The developed LOD could be widely applied to various biochemical single-end-point assays which require different volume ratios of the sample and reagent by controlling the design of the C-MUFID. The proposed LOD is feasible for point-of-care diagnostics because of its mass-producible structures, reliable metering/dispensing performance, and parallel biochemical single-end-point assays, which can identify numerous biochemical.  相似文献   
40.
Using two experiments, this study aims to investigate how politically liberal or conservative message recipients respond to anti-tobacco appeals. The results show that in Study 1, respondents were exposed to a message about price policy. In Study 2, they were exposed to a message about a warning policy. In both studies, liberal participants more favorably evaluated anti-tobacco messages emphasizing feasibility rather than desirability, whereas conservative participants more positively evaluated messages emphasizing desirability rather than feasibility. Implications for policymakers and marketers are discussed.  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