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   791篇
  免费   91篇
  国内免费   86篇
  968篇
  2023年   26篇
  2022年   16篇
  2021年   14篇
  2020年   34篇
  2019年   37篇
  2018年   55篇
  2017年   43篇
  2016年   41篇
  2015年   21篇
  2014年   29篇
  2013年   132篇
  2012年   22篇
  2011年   24篇
  2010年   22篇
  2009年   28篇
  2008年   26篇
  2007年   49篇
  2006年   47篇
  2005年   56篇
  2004年   46篇
  2003年   34篇
  2002年   28篇
  2001年   20篇
  2000年   18篇
  1999年   11篇
  1998年   4篇
  1997年   10篇
  1996年   7篇
  1995年   4篇
  1994年   6篇
  1993年   4篇
  1992年   5篇
  1991年   2篇
  1990年   2篇
  1989年   2篇
  1988年   1篇
  1987年   4篇
  1985年   1篇
  1984年   1篇
  1983年   1篇
  1982年   2篇
  1981年   3篇
  1980年   3篇
  1979年   5篇
  1978年   6篇
  1977年   2篇
  1976年   5篇
  1975年   4篇
  1974年   1篇
  1973年   3篇
排序方式: 共有968条查询结果,搜索用时 15 毫秒
251.
The President’s Council on Bioethics has addressed the moral status of human preembryos in its reports on stem cell research and human therapeutic cloning. Although the Council has been criticized for being hand-picked to favor the right-to-life viewpoint concerning human preembryos, it has embraced the idea that the right-to-life position should be defended in secular terms. This is an important feature of the Council’s work, and it demonstrates a recognition of the need for genuine engagement between opposing sides in the debate over stem cell research. To promote this engagement, the Council has stated in secular terms several arguments for the personhood of human preembryos. This essay presents and critiques those arguments, and it concludes that they are unsuccessful. If the best arguments in support of the personhood of human preembryos have been presented by the Council, then there are no reasonable secular arguments in support of that view.  相似文献   
252.
What’s human rights got to do with it? That is, what’s human rights got to do with the June 2004 report of the Social Sciences and Humanities Research Ethics Special Working Committee to the Inter-Agency Advisory Panel on Research Ethics. The disturbing answer is “not enough.” Certain key recommendations of the working committee, it is suggested, would unacceptably weaken the researcher’s legal and moral accountability to research participants. Those particular recommendations rely on misguided references to academic freedom and the nature of the non-medical research context. In fact, universal human rights, and the legal instruments in which they are embodied ought to inform the research endeavor at every stage; from problem selection to analysis and conclusions. This will lead us closer to shared truths rather than simply to the academic elite’s vision of truth. Without sufficient regard for the human rights of research participants academic freedom itself is not possible.  相似文献   
253.
《易传》作者有意表明了对《易经》的研究与评价的立场 ,《易传》文本包含有关美学—文学思想的内容。在前人研究的基础上 ,本文拾遗补阙 ,论述《易传》之“美”有美在自然、自然美高于艺术美、美乃自然而然、无所为而为等方面的内容以及阴柔之为美及其含蓄的特征 ;又 ,关于“修辞立其诚”的意义及其影响 ,关于“衰世之意”、“忧患”著书的意义及其对司马迁“发愤著书”说的影响等等。论述结合了与古今中外美学—文学理论的比较 ,加强证明了《易传》实为《文心雕龙》之先导 ,是我国最早作专书批评的文章—文学理论著作。  相似文献   
254.
创造性思维对于中医基础研究非常重要.在中医基础研究中过分依赖高新技术,或者不敢直面问题、遇到困难退缩将阻碍创造性思维.中医基础研究的创造性思维需要研究者在传统知识、现代知识、高新技术与仪器等方面作好充分的准备.为使研究保持正确的方向,在研究中要处理好"已知"与"未知"的关系并以"和"的态度对待学术争论.  相似文献   
255.
上海博物馆藏战国楚竹书所载的“中氏”即今传本《诗·仲氏》。孔子时代的《仲氏》一诗 ,在流传的过程中 ,因错简而被误入它诗 ,它的原貌至少包括了《燕燕》诗的末章和《何人斯》的第七章。经复原后的《仲氏》一诗 ,体现了儒家孝悌精神。上博简《诗论》载孔子以“君子”评《仲氏》一诗 ,其主导思想即在于对“孝弟”原则的肯定。《仲氏》一诗透露的内容与共伯兄弟的情况十分吻合 ,且其简被编入《邶风》 ,此皆可以推测此诗为共伯余之作。《诗·仲氏》对于了解“共和行政”这一重大历史事件提供了相当可贵的资料  相似文献   
256.
The discriminant and predictive validity of the Dutch translation of the Golombok Rust Inventory of Sexual Satisfaction (GRISS; Rust and Golombok, 1985, Rust and Golombok, 1986a, Rust and Golombok, 1986b; Ter Kuile et al., (1993); Ter Kuile et al., accepted for publication) was examined in independent samples comprising sexological (357 males and 380 females) and gynaecological outpatients (156 males and 209 females). Prediction of the presence of sexual complaints with the GRISS differed in these samples. The best performance was found in the male sexology sample in which sensitivity and specificity, as well as the predictive values both positive and negative were satisfactory. The predictive characteristics in the other three samples were found to be less satisfactory and were confounded with sample characteristics concerning the presence or absence of individual sexual problems. The availability of the other partners' GRISS scores enhanced the GRISS' predictive capacities for males and females in these samples. In 320 female and 300 male sexology patients and their partners, the convergent and divergent construct validity of the GRISS scales was investigated using other instruments measuring psychological distress, marital, sexual and general life maladjustment, personality traits of psychoticism, extraversion and neuroticism and social desirability. No correlations of the GRISS with social desirability were found. GRISS subscales were found to represent relatively independent constructs. These findings were confirmed by higher-order factor analyses of subscale scores of males and females.  相似文献   
257.
James B. Miller 《Zygon》1998,33(1):147-153
James Gilbert has provided fascinating and valuable historical sketches of the interactions of science and religion in American culture in this century, especially those taking place between 1945 and 1962. Yet, taken together, it is unclear what conclusion is to be drawn from these interactions. Ambiguity about the variety of forms of the science-and-religion relationship and about the referent of the term religion make the task of apprehending a coherent pattern among these sketches very difficult.  相似文献   
258.
Seventy-one families from a low socio-economic background, each with a son at risk of developing psychosocial problems at the onset of the study, were observed three times over a six-year period while solving a combinatorial task presented on a microcomputer. The permutations task was used to gather information with regard to cognitive functioning and cognitive self-regulation of the families, which were observed as a developmental unit. Cognitive functioning was assessed according to three variables: cognitive strategies, performance, and completion of the task. Six self-regulatory activities were assessed: task definition, planning, supervision, evaluation, parental support, and sharing of responsibilities. Although inefficient strategies were mainly used across the six years, the cognitive level of functioning improved over the years. Cognitive self-regulatory activities most often used across time were supervision and parental support. Differences were observed in the three time periods for supervision, task definition, parental support, and individual involvement. Results indicated a link between cognitive strategies used by the families to solve the task and their self-regulatory activities. Results are interpreted within both the Piagetian and Vygotskian perspectives. Families' cognitive self-regulatory activities observed in this study are an example of parental disengagement and children's growing involvement in a joint activity.  相似文献   
259.
This study examined the factor structure, validity, and reliability of the Fear Questionnaire in Hong Kong. The sample consisted of 226 college students who were ethnic Chinese and they came from different parts of Hong Kong. Exploratory factor analysis produced three meaningful factors. Confirmatory factor analysis supported the three-factor model of Marks and Mathews (1979) in the present sample of subjects. Findings also showed that the Fear Questionnaire was both reliable and valid. Limitations of the study and implications for future research in this area were discussed. In particular, the need to assess the cross-cultural application of the Fear Questionnaire was stressed.This research project was supported by the Research and Conference Grants of the University of Hong Kong.  相似文献   
260.
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