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   1098篇
  免费   63篇
  国内免费   189篇
  2023年   18篇
  2021年   11篇
  2020年   27篇
  2019年   32篇
  2018年   35篇
  2017年   40篇
  2016年   42篇
  2015年   32篇
  2014年   40篇
  2013年   97篇
  2012年   40篇
  2011年   67篇
  2010年   32篇
  2009年   27篇
  2008年   177篇
  2007年   31篇
  2006年   31篇
  2005年   110篇
  2004年   99篇
  2003年   23篇
  2002年   16篇
  2001年   24篇
  2000年   8篇
  1999年   19篇
  1998年   12篇
  1997年   5篇
  1996年   4篇
  1995年   5篇
  1994年   5篇
  1993年   28篇
  1992年   23篇
  1991年   22篇
  1990年   19篇
  1989年   27篇
  1988年   20篇
  1987年   21篇
  1986年   15篇
  1985年   3篇
  1984年   23篇
  1983年   7篇
  1982年   14篇
  1981年   2篇
  1980年   4篇
  1979年   6篇
  1977年   2篇
  1976年   1篇
  1975年   1篇
  1974年   1篇
  1963年   1篇
  1951年   1篇
排序方式: 共有1350条查询结果,搜索用时 761 毫秒
251.
生命权利平等的伦理诠释   总被引:1,自引:0,他引:1  
人的生命是十分珍贵的,生命权利应该优先于一切权利。没有先进的医学技术和较高的社会发展水平,生命权利就很难得到保障和实现。在发展医学技术的同时,应认真思考卫生经济政策的核心价值,保证卫生经济政策在任何时候都不背离公民的健康利益,从而保障人的生命权利得以实现。  相似文献   
252.
水本思想对《黄帝内经》理论构建之影响   总被引:1,自引:0,他引:1  
从水崇拜与太一生水入手,探讨了水生万物与肾藏精、主生殖的关系,太一藏于水、行于时与《内经》八风九针的关系,盖天说与《内经》之海的关系,水为道与精气学说理论的关系,阐述了水本思想对《黄帝内经》理论构建的重大影响,以及对中医继承发展的意义。  相似文献   
253.
对医学科学领域内存在的和某些一度充斥的唯心科学观的社会表现进行分析,从过程管理和科学方法论的重要性入手,提出防范学术腐败和发展医学科学的方法和措施,从教育和民生的角度探讨医务工作者和社会学家必须关注的医学领域内的唯心科学观,并举例说明医学工作者的科学道德自律和社会责任感的重要性。  相似文献   
254.
New Caledonian crows are the most proficient non-hominin tool manufacturers but the cognition behind their remarkable skills remains largely unknown. Here we investigate if they attend to the functional properties of the tools that they routinely use in the wild. Pandanus tools have natural barbs along one edge that enable them to function as hooking implements when the barbs face backwards from the working tip. In experiment 1 we presented eight crows with either a non-functional (‘upside-down’) or a functional pandanus tool in a baited hole. Four of the crows never flipped the tools. The behaviour of the four flipping birds suggested that they had a strategy of flipping a tool when it was not working. Observations of two of the eight crows picking up pandanus tools at feeding tables in the wild supported the lack of attention to barb direction. In experiment 2 we gave six of the eight crows a choice of either a barbed or a barbless pandanus tool. Five of the crows chose tools at random, which further supported the findings in experiment 1 that the crows paid little or no attention to the barbs. In contrast, a third experiment found that seven out of eight crows flipped non-functional stick tools significantly more than functional ones. Our findings indicate that the crows do not consistently attend to the presence or orientation of barbs on pandanus tools. Successful pandanus tool use in the wild seems to rely on behavioural strategies formed through associative learning, including procedural knowledge about the sequence of operations required to make a successful pandanus tool. Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users.  相似文献   
255.
The present work analyzes the relationships between the dimensions of temperament and the exteriorized emotions of aggression and anger. Temperament was assessed by mothers using the Dimensions of Temperament Survey‐Revised, while aggression and anger were self‐reported by the children using the Scale of physical and Verbal Aggression and the State–Trait Anger Expression Inventory for Children. The sample studied was made up of 293 children (49.83% boys; 50.17% girls) with a mean age of 11.13 years. The results showed that temperamental difficulties give rise to exteriorized emotions, especially anger. Predictive values of temperament on aggression and anger ranged from 1% to 7% of explained variance. Aggr. Behav. 32:207–215, 2006. © 2006 Wiley‐Liss, Inc.  相似文献   
256.
257.
生命伦理学具有广泛性和综合性,着眼于群体健康是当前生命伦理学发展的趋势。在群体水平的生命伦理学的研究中,有关“正义”的概念是核心的问题。涛慕思·W·博格提出了正义的“关系概念”,借以考察范围广泛的社会制度与健康结果的产生具有什么样的因果关系,进而强调社会制度的制定者和支持者对其产生的健康结果负有责任。通过对此“关系概念”进行分析,以期对中国国内健康领域问题的解决有所启示。  相似文献   
258.
Diamondv.Chakrabarty案是美国专利法上里程碑式的案件,该案中美国最高法院所做出的判决打开了基因技术可被授予专利权的大门。通过介绍和分析该案件,对基因专利问题的发端进行了深入的剖析,并对基因专利问题带来的正负影响做了全面的分析。  相似文献   
259.
Dimensionality of the widely used Rosenberg’s Self-Esteem Scale (RSES) was investigated in a sample of 153 seventh-grade Asian students from Singapore. Confirmatory factor analyses performed on the scores of the RSES revealed two factors (positive and negative self-esteem) as hypothesized. Both factors were empirically related to different external variables. Results from multiple regression analyses indicated that positive self-esteem significantly predicted students’ mastery goal orientation and academic self-efficacy scores while negative self-esteem significantly predicted students’ disruptive behavior. These findings provide some preliminary support that the two factors could possibly be measuring substantively distinct dimensions, thus calling into question the unidimensionalty of the RSES in an Asian school-based sample. This study was supported by a grant from Center for Research in Pedagogy and Practice, National Institute of Education (CRP 26/04 RA) to Rebecca P. Ang.  相似文献   
260.
Three studies explored the hypothesis that implicit measures of prejudice can tap negative, yet egalitarian associations. In Study 1, automatically associating African Americans with oppression predicted greater automatic prejudice. In Studies 2 and 3, classically conditioning associations between the novel group Noffians and words like oppressed, maltreated, and victimized led to greater automatic prejudice against Noffians. Results suggest that White Americans’ negative automatic associations with African Americans may partly result from associating members of low status groups with unfair circumstances. Because automatic associations predict prejudiced behaviors, the burden of proof is on those wishing to argue that egalitarian negative associations complicate the assessment of automatic attitudes rather than contribute to prejudiced responses. Discussion focuses on the implications of egalitarian negative associations for the theory and measurement of automatic prejudice.  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