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   4870篇
  免费   720篇
  国内免费   451篇
  2024年   7篇
  2023年   55篇
  2022年   59篇
  2021年   94篇
  2020年   176篇
  2019年   251篇
  2018年   235篇
  2017年   257篇
  2016年   234篇
  2015年   189篇
  2014年   206篇
  2013年   579篇
  2012年   195篇
  2011年   193篇
  2010年   182篇
  2009年   180篇
  2008年   232篇
  2007年   306篇
  2006年   307篇
  2005年   265篇
  2004年   255篇
  2003年   198篇
  2002年   168篇
  2001年   107篇
  2000年   91篇
  1999年   58篇
  1998年   43篇
  1997年   33篇
  1996年   27篇
  1995年   24篇
  1994年   12篇
  1993年   22篇
  1992年   7篇
  1991年   10篇
  1990年   10篇
  1989年   9篇
  1987年   4篇
  1985年   62篇
  1984年   68篇
  1983年   44篇
  1982年   49篇
  1981年   52篇
  1980年   52篇
  1979年   48篇
  1978年   81篇
  1977年   66篇
  1976年   72篇
  1975年   62篇
  1974年   53篇
  1973年   50篇
排序方式: 共有6041条查询结果,搜索用时 15 毫秒
991.
In Islam, the acquisition of knowledge is a form of worship. But human achievement must be exercised in conformity with God's will. Warnings against feelings of superiority often are coupled with the command to remain within the confines of God's laws and limits. Because of the fear of arrogance and disregard of the balance created by God, any new knowledge or discovery must be applied with careful consideration to maintaining balance in the creation. Knowledge must be applied to ascertain equity and justice for all of humanity. Research in Islam must be linked to the broad ethical base set forth in the Qur'an and the Sunnah. Whether embryonic stem cell research or cloning is ethically acceptable in Islam depends on the benefits derived from such applications. What is most important for the scholars is to adhere to the concepts of compassion, mercy, and benefit to everyone.  相似文献   
992.
We argue and demonstrate that setting high standards, an essential aspect of perfectionism, is not associated with maladaptive responses in and of itself. Rather, our findings suggest that people's responses to their perceptions that they consistently fail to meet their own standards are maladaptive. More importantly, in the present survey study (n = 293), we extend previous research by showing that low personal standards and the perception that others are imposing high standards on the self operate in concert to strengthen the link between perceived discrepancy and psychological distress. Furthermore, in support of our moderation‐mediation model, regression analyses provided evidence for the mediating role of generalised self‐efficacy beliefs. Copyright © 2008 John Wiley & Sons, Ltd.  相似文献   
993.
刘万伦  张奇 《应用心理学》2008,14(4):365-370
在多重系统理论研究基础上,运用即时反馈训练范式,以大学生为被试,考查相关维度数量对基于规则和信息整合两种结构的类别学习的影响.结果表明:(1)相关维度数量是影响类别学习的重要因素,基于规则单维度结构的学习显著优于信息整合结构和基于规则双维度结构的学习,基于规则双维度结构的学习与信息整合结构的学习没有显著差异.(2)反应策略受到规则复杂性的影响,当类别结构中隐含的规则比较简单时,学习者使用规则策略;当类别结构中隐含的规则比较复杂时,学习者难以掌握规则,就会使用相似性策略.研究结果支持"难度观",而不支持多重系统理论.  相似文献   
994.
995.
The discursive explosion that was provoked by the new genetics could support the impression that the ethical and social problems posed by the new genetics are somehow exceptional in their very nature. According to this view we are faced with special ethical and social problems that create a challenge so fundamental that the special label of genethics is needless to justify. The historical account regarding the evolution of the gene concepts could serve us to highlight the limits of what we know about genes and what we can do with genes. The widespread notion about the exceptionality of genetic knowledge and its applicative possibilities is hardly justifiable and leads to misunderstandings regarding the conceptualization of the ethical and social problems we might face. Following a more realistic interpretation of the role of genes in human life we might avoid a whole set of fictive dilemmas and counterproductive regulatory efforts in bioethics. Bioethical discourse should move from the gene-centered scientific discourse toward the more sophisticated and complex discourses where human development represented as a matter of complex interactions between genomes and environments, between genes, educational factors, nutritional regimes, and other different developmental resources. If a gene is seen as one among the different developmental resources that are shaping a given human trait then both genethics and genetic exceptionalism could hardly be represented as a justified approach in discussing the ethical and social problems of genetics.  相似文献   
996.
Derek Parfit has argued that, in contrast to prioritarianism, egalitarianism is exposed to the levelling down objection, i.e., the objection that it is absurd that a change which consists merely in the betteroff losing some of their well-being should be in one way for the better. In reply, this paper contends that (1) there is a plausible form of egalitarianism which is equivalent to another form of prioritarianism than the Parfitian one, a relational rather than an absolute form of prioritarianism, and that (2), although this relational or egalitarian form of prioritarianism is hit by the levelling down objection, the Parfitian form is also hit by it, or worse objections, if it is fully worked out.
Ingmar PerssonEmail:
  相似文献   
997.
齐鲁饮食文化深受儒学思想的影响,形成了一定文化形态的饮食观念,影响人们的日常生活,并在一定的时间和空间范围内起着促进或制约社会发展的作用。齐鲁饮食习俗中“上顺天道、适时进食”的自然生态观,“长幼有序、进食有礼”的礼俗观,“敬天爱人”和谐观,“孝敬父母、以和为贵”伦理观,“以大惟美”待客观,是齐鲁饮食文化形态的主要特征,是儒学思想实现社会统治方略和社会管理的具体体现。新的历史时期,齐鲁饮食文化不断与时俱进,加强自身发展与对外交流,去粗存精引领社会饮食文化健康和谐发展。  相似文献   
998.
This fascinating autobiography and multifaceted case history in neuroscience research is accessible to laymen and potentially instructive to working scientists. Kandel takes the reader through his thought processes as he describes experiments that led to some of the past decades'' major neuroscience discoveries (some highlights of which are summarized in the review''s Appendix), and eventually to his Nobel Prize. The review analyzes some of the terminological and conceptual issues that have often inhibited communication between behavior analysts and neuroscientists, with special attention to some of Bennett and Hacker''s admonitions viewed from the perspective of language evolution and linguistics. The review then discusses opportunities for behavior analysts to collaborate with neuroscientists by applying behavioral contingency analysis to help specify the independent variables of neuroscience experiments described by Kandel. Finally, it examines Kandel''s provocative heuristics for locating important research problems, and the lessons that can be gleaned from the book regarding the attributes of potentially great achievers.  相似文献   
999.
The Journal of the Experimental Analysis of Behavior at fifty   总被引:1,自引:0,他引:1  
The Journal of the Experimental Analysis of Behavior was founded in 1958 by a group of male psychologists, mainly from the northeastern USA and connected with either Harvard or Columbia. Fifty years later about 20% of both editors and authors reside outside this country and almost the same proportion is made up of women. Other changes in the journal include having its own website for more than a decade and now publishing online as well as on paper. A recent connection with PubMed Central of the National Library of Medicine has made possible the completely free electronic presentation of the entire archive of about 3,800 articles.  相似文献   
1000.
本文重点在于提出并阐释了一种证实性治法研究的设计理念——纳入标准的二重性原则:检验中成药治疗某种“西医病”是否安全有效,制定受试对象的纳入标准时既辨病又辨证,研究结论的可靠性与可重复性将更有保证;在辨病的同时应该计算四诊量化信息的离均差平方和,评价受试对象之间“对表现为某证构成标志的症状和体征”的不同程度以严格控制其证候表现上的差异。  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