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   1724篇
  免费   36篇
  国内免费   2篇
教育   1212篇
科学研究   97篇
各国文化   38篇
体育   196篇
综合类   2篇
文化理论   25篇
信息传播   192篇
  2024年   3篇
  2023年   11篇
  2022年   20篇
  2021年   23篇
  2020年   50篇
  2019年   88篇
  2018年   98篇
  2017年   95篇
  2016年   81篇
  2015年   59篇
  2014年   71篇
  2013年   403篇
  2012年   61篇
  2011年   58篇
  2010年   54篇
  2009年   48篇
  2008年   52篇
  2007年   59篇
  2006年   42篇
  2005年   34篇
  2004年   41篇
  2003年   22篇
  2002年   30篇
  2001年   15篇
  2000年   16篇
  1999年   13篇
  1998年   14篇
  1997年   19篇
  1996年   11篇
  1995年   15篇
  1994年   12篇
  1993年   4篇
  1992年   16篇
  1991年   12篇
  1990年   8篇
  1989年   9篇
  1988年   10篇
  1987年   8篇
  1986年   4篇
  1985年   7篇
  1984年   14篇
  1983年   8篇
  1982年   8篇
  1980年   6篇
  1979年   4篇
  1978年   6篇
  1977年   3篇
  1972年   3篇
  1971年   4篇
  1967年   3篇
排序方式: 共有1762条查询结果,搜索用时 31 毫秒
91.
The purpose of this study was to examine whether an innovative, inclusive and integrated 12-week exercise, behaviour change and nutrition advice-based weight management programme could significantly improve the cardiovascular risk factors of overweight and obese men and women over the age of 35. One hundred and ninety-four men and 98 women (mean age?=?52.28?±?9.74 and 51.19?±?9.04) attending a community-based intervention delivered by Notts County Football in the Community over one year, took part in the study. Height (m), weight (kg), fitness (meters covered during a 6?min walk) and waist circumference (cm) were measured at weeks 1 and 12 as part of the intervention. Changes in body weight, waist circumference and fitness for men and women were measured by a 2-way repeated measures ANOVA, with significance set to p?<?0.05.Weight, waist circumference and fitness significantly improved over time in both men (4.96?kg, 6.29?cm, 70.22?m; p?<?0.05) and women (4.26?kg, 5.90?cm, 35.29?m; p?<?0.05). The results demonstrated that the FITC lead weight loss intervention was successful in significantly improving cardiovascular risk factors in both men and women. In particular, the weight loss reductions achieved were comparable to those seen in similar, more costly men-only programmes. This is the first study to demonstrate the efficacy of such an intervention in an inclusive, mixed gender programme and more specifically, in women.  相似文献   
92.
93.
94.
This article will consider the claim that the possession of concepts is innate rather than learned. Innatism about concept learning is explained through consideration of the work of Fodor and Chomsky. First, an account of concept formation is developed. Second the argument against the claim that concepts are learned through the construction of a learning paradox developed by Fodor is considered. It is argued that, despite initial plausibility, the learning paradox is not, in fact, a paradox at all as it rests on eliding the distinction between recognising something and recognising it as a something. The plausibility of eliding this distinction rests, in turn, on begging the question as to whether concept possession is a necessary condition for recognition of objects, events, properties etc. Fodor's positive arguments for innatism, as set out in LOT2 are considered and parallels with his account of stereotype formation and associationist accounts of concept formation are considered. The explanatory persuasiveness of this revised account of concept activation through the generation of stereotypes is weak. The article then examines the distinction between concept possession and concept mastery in greater detail, arguing that innatists have difficulty in accounting for the phenomenon of concept mastery, including within the contexts of formal and professional education.  相似文献   
95.
96.
97.
98.
Book reviews     

There are signs that teams are becoming more popular in ethnographic research. New technology and, in the UK, the Research Assessment Exercise have facilitated the establishment and continuance of teams. In this paper, the authors discuss their experiences in one particular research team in recent years. Securing adequate funding has been the essential structural prerequisite. The authors distinguish among project, federated, and whole teams, depending on function and level of analysis. They consider team structure, approach, business, and processes, and the relationship between individual and team. Teamwork has enabled a wider and deeper coverage of work, a broader comparative base, and multiple researcher triangulation. The team provides a forum for the discussion of ethical issues, an immediate supportive reference group. It has opened up horizons, and promoted individual change and development. It has aided analysis and writing, and promoted clearer and more robust arguments. The article concludes with some caveats.  相似文献   
99.
Biodeterioration of Incralac used for the protection of bronze monuments   总被引:2,自引:0,他引:2  
Outdoor bronze sculptures are highly susceptible to corrosion in many environments and organic coatings are widely used for their protection. The purpose of this study was to determine the susceptibility of the commonly used coating Incralac to biodeterioration by microorganisms. A yeast was isolated from a bronze statue treated with Incralac and its ability to degrade Incralac was determined using growth curves, scanning electron microscopy (SEM), and electrochemical impedance spectroscopy (EIS). The organism grew slowly on Incralac in liquid culture, but SEM images demonstrated its ability to adhere to Incralac coated metal. Additionally, the yeast caused a rapid drop in the low frequency impedance of Incralac coated metal that was not observed under sterile conditions, indicating that the organism accelerated deterioration of the coating. The potential for microbial growth to accelerate deterioration of Incralac should be considered when developing a maintenance strategy for the protection of outdoor metal monuments.  相似文献   
100.
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