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   27770篇
  免费   239篇
  国内免费   4篇
  2019年   94篇
  2018年   3634篇
  2017年   2938篇
  2016年   2363篇
  2015年   277篇
  2014年   169篇
  2013年   656篇
  2012年   776篇
  2011年   2611篇
  2010年   2647篇
  2009年   1615篇
  2008年   1903篇
  2007年   2397篇
  2006年   192篇
  2005年   379篇
  2004年   340篇
  2003年   259篇
  2002年   217篇
  2001年   256篇
  2000年   285篇
  1999年   184篇
  1998年   92篇
  1997年   87篇
  1996年   87篇
  1992年   136篇
  1991年   133篇
  1990年   134篇
  1989年   108篇
  1988年   102篇
  1987年   114篇
  1986年   119篇
  1985年   129篇
  1984年   109篇
  1983年   94篇
  1981年   66篇
  1980年   66篇
  1979年   113篇
  1978年   87篇
  1977年   77篇
  1976年   73篇
  1975年   87篇
  1974年   113篇
  1973年   120篇
  1972年   86篇
  1971年   75篇
  1970年   91篇
  1969年   83篇
  1968年   119篇
  1967年   91篇
  1966年   106篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
911.
The conflict monitoring model of cognitive control posits that response conflict triggers a top-down enhancement of a task’s representation in working memory. In the present study, we conducted a novel test of the conflict monitoring model using a voluntary task switching paradigm. We predicted that a task’s representation would be enhanced following events associated with high response conflict (i.e., incongruent trials and incorrect responses), leading participants to voluntarily choose to repeat that task more often after these events than after events associated with low response conflict (i.e., congruent trials and correct responses). In two experiments, performance following incongruent trials was consistent with the conflict monitoring model. However, performance following incorrect trials did not fit with the model’s predictions. These findings provide novel support for the conflict monitoring model while revealing new effects of incorrect trials that the model cannot explain.  相似文献   
912.
The study explored the achromatic-color determinants of grouping of uniform surfaces. The stimuli were a set of separate uniform achromatic disks on either a uniform or a bipartite achromatic background. The participants rated the salience of grouping of these disks for different combinations of stimulus luminances. The results show that achromatic color similarity alone could not sufficiently explain the pattern of obtained factorial curves but this factor coupled with the factor of surface segregation could. Luminance contrast similarity per se was found to be unimportant for grouping.  相似文献   
913.
This paper surveys the field of Judaism and health. The authors trace the history of discourse on health and healing within Judaism, from the biblical and rabbinic eras to contemporary research and writing on Jewish bioethics, pastoral care, communal services, and aging, including congregational and community programming related to health and illness and the emergence of the Jewish healing movement. The work of the Kalsman Institute on Judaism and Health is described, focusing on efforts to unite these various threads into a scholarly field emphasizing basic and applied research on the instrumental functions of Jewish religious life for health and well-being.  相似文献   
914.
A new bill regulating ovum donation in Israel is set to pass its second and third readings in the Israel Parliament in the upcoming months. The new law will expand the number of locally donated ova available, as previously Israeli women were prohibited from donating eggs unless they were undergoing fertility treatment. Parallel to this legislative initiative, there has been a change in rabbinical thinking over who is considered the mother in a case of surrogacy. Previously, the consensus has been that the birth mother is to be considered the mother, but over the last few years there has been a change in thinking and the genetic mother is now considered the mother. The purpose of this paper is to present the ethical and legal issues from a Jewish perspective in determining maternal identity. The dilemma also demonstrates some of the difficulties in applying Talmudic law to modern problems and the various methodologies used to overcome these issues.  相似文献   
915.
Deciding who should receive maximal technological treatment options and who should not represents an ethical, moral, psychological and medico-legal challenge for health care providers. Especially in patients with chronic heart failure, the ethical and medico-legal issues associated with providing maximal possible care or withholding the same are coming to the forefront. Procedures, such as cardiac transplantation, have strict criteria for adequate candidacy. These criteria for subsequent listing are based on clinical outcome data but also reflect the reality of organ shortage. Lack of compliance and non-adherence to lifestyle changes represent relative contraindications to heart transplant candidacy. Mechanical circulatory support therapy using ventricular assist devices is becoming a more prominent therapeutic option for patients with end-stage heart failure who are not candidates for transplantation, which also requires strict criteria to enable beneficial outcome for the patient. Physicians need to critically reflect that in many cases, the patient’s best interest might not always mean pursuing maximal technological options available. This article reflects on the multitude of critical issues that health care providers have to face while caring for patients with end-stage heart failure.  相似文献   
916.
The number of HIV-positive Latinas of child-bearing age living on the US–Mexico border is a growing concern. Little is known about how religious beliefs influence the reproductive health decisions of these women in light of disease demands and cultural and religious norms that support high fertility rates and childbearing. Such decisions may be further complicated by the stigma of HIV/AIDS and structural issues related to immigration status and trans-border lives. This paper analyzes extant literature and supports the need for further research so that policy makers and heath and social service providers can develop meaningful and comprehensive reproductive-health related interventions.  相似文献   
917.
This study was a follow up investigation of Brawer et al.’s (Prof Psychol Res Pr 33(2):203–206, 2002) survey of education and training of clinical psychologists in religion/spirituality. Directors of clinical training were surveyed to determine whether changes had occurred in the coverage of religion and spirituality through course work, research, supervision, and in the systematic coverage of the content area. Results indicated an increased coverage in the areas of supervision, dedicated courses, inclusion as part of another course, and research. There was no increase in systematic coverage, but significantly more programs provided at least some coverage. The current study also assesses other areas of incorporation as well as directors’ opinions regarding the importance of religion/spirituality in the field of psychology.  相似文献   
918.
Whether culture-based modesty may be a barrier to women’s health care has been a longstanding question. Numerous studies have noted that, in certain cultures, modesty is considered a barrier to mammography screening and breast feeding. Though modesty has been noted as an inherent aspect of the lived experience of many cultures, no extant measures or clear definitions were found. Jewish women, some having strict rules regarding modesty, were sampled to understand their definition of modesty. These perspectives were objectively analyzed using Q methodology. We found that although some perspectives on modesty may be accounted for by culture, there are others that are not.  相似文献   
919.
920.
Reviewing the publications of prominent American rabbis who have (extensively) published on Jewish biomedical ethics, this article highlights Orthodox, Conservative and Reform opinions on a most pressing contemporary bioethical issue: euthanasia. Reviewing their opinions against the background of the halachic character of Jewish (biomedical) ethics, this article shows how from one traditional Jewish textual source diverse, even contradictory, opinions emerge through different interpretations. In this way, in the Jewish debate on euthanasia the specific methodology of Jewish (bio)ethical reasoning comes forward as well as a diversity of opinion within Judaism and its branches.  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