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   4876篇
  免费   17篇
  国内免费   1篇
  2020年   7篇
  2019年   11篇
  2018年   124篇
  2017年   108篇
  2016年   192篇
  2015年   110篇
  2014年   46篇
  2013年   85篇
  2012年   273篇
  2011年   272篇
  2010年   29篇
  2009年   37篇
  2008年   59篇
  2007年   52篇
  2006年   64篇
  2005年   1336篇
  2004年   677篇
  2003年   460篇
  2002年   158篇
  2001年   31篇
  2000年   13篇
  1999年   30篇
  1998年   11篇
  1996年   8篇
  1994年   13篇
  1992年   25篇
  1991年   41篇
  1990年   59篇
  1989年   45篇
  1988年   28篇
  1987年   41篇
  1986年   40篇
  1985年   29篇
  1984年   25篇
  1983年   19篇
  1979年   33篇
  1978年   11篇
  1977年   8篇
  1976年   11篇
  1975年   29篇
  1974年   32篇
  1973年   30篇
  1972年   25篇
  1971年   25篇
  1970年   17篇
  1969年   20篇
  1968年   16篇
  1967年   17篇
  1966年   16篇
  1965年   7篇
排序方式: 共有4894条查询结果,搜索用时 17 毫秒
861.
Facial expressions of anger and fear have been seen to elicit avoidance behavior in the perceiver due to their negative valence. However, recent research uncovered discrepancies regarding these immediate motivational implications of fear and anger, suggesting that not all negative emotions trigger avoidance to a comparable extent. To clarify those discrepancies, we considered recent theoretical and methodological advances, and investigated the role of social preferences and processing focus on approach-avoidance tendencies (AAT) to negative facial expressions. We exposed participants to dynamic facial expressions of anger, disgust, fear, or sadness, while they processed either the emotional expression or the gender of the faces. AATs were assessed by reaction times of lever movements, and by posture changes via head-tracking. We found that—relative to angry faces-, fearful and sad faces triggered more approach, with a larger difference between fear and anger in prosocial compared to individualistic participants. Interestingly, these findings are in line with a recently developed concern hypothesis, suggesting that—relative to other negative expressions—expressions of distress may facilitate approach, especially in participants with prosocial preferences.  相似文献   
862.
Unfavorable social determinants can impact mothering of young children who are homeless or poor housed and parent sense of competence. Social determinants influence on mothers’ parent sense of competence parent self-efficacy and satisfaction was investigated. Homeless mothers reported worse scores than poor housed mothers on 5 of 10 social determinants including: mother moves, abuse, un/underemployment, less stable partner relationships and student roles. Homeless mothers scored lower than poor housed mothers on parent sense of competence satisfaction and parent sense of competence total, but not on parent sense of competence efficacy. No one social determinant predicted parent sense of competence. Results underscore the need to address social determinants of health in occupational therapy community-based practice.  相似文献   
863.
When two target items (T1 and T2) are presented in rapid succession among fillers, processing T2 is often impaired. This phenomenon is known as the attentional blink (AB). Within the visual modality, this second-target deficit generally occurs only if T2 is masked by a trailing item. The current study was designed to examine whether masking of T2 also plays a critical role in the auditory AB. Results showed a reliable AB effect even when the item following T2 was replaced by silence. However, the AB deficit was abolished when T2 was the last presented stimulus. Our results suggest that, as in vision, T2 masking is necessary for the AB to take place in audition, but that masking is effective even when delayed, providing evidence that the phenomenon shares some functional mechanisms across sensory modalities.  相似文献   
864.
We compared men who have sex with other men on the Internet with the remainder of the sample of men who reported only sex with women on the Internet, in a sample of 1,846 Swedish men recruited from a major Swedish portal. We report on the self-identified heterosexual men in the sample who reported engaging in cybersex in the past year, and for whom there was complete data on sexual identity and the gender of cybersexual partners. Of the 244 cases with full data, 76% were heterosexual in both identity and behavior, 16% were gay or bisexual in identity and reported both male and female cybersexual contacts on the Internet, and 8% indicated their sexual preference was heterosexual but also reported at least one male sexual partner on the Internet. Thus, 11% of self-identified heterosexual men had sex with other men online. Comparing the two groups, the men who had sex with men (MSM) who did not identify (MSM-NI) spent significantly more time per week online, although a similar amount of time on sexual pursuits, as the heterosexual men. The MSM-NI were significantly more likely to agree that their online sexuality had affected their sexuality in a positive way, to have bought sex from prostitutes, to agree that they do things online that they would not do offline, have cybersex more often, use a web-camera and microphone more often, flirt and visit contact sites more often, and agree more often that sexual thoughts and behaviors are causing problems, desire to have sex creates problems, and sometimes fail to meet commitments due to their sexual behavior. These data taken together suggest that MSM-NI online are not uncommon and are characterized by the extent of their cybersexual involvement that sometimes extends to other men. Such men may rationalize this cybersex with other men as not, or minimally, sexual in much the same way as Humphreys characterized MSMs in public restrooms.  相似文献   
865.
Uskali M?ki 《Erkenntnis》2005,63(2):231-251
In order to examine the fit between realism and science, one needs to address two issues: the unit of science question (realism about which parts of science?) and the contents of realism question (which realism about science?). Answering these questions is a matter of conceptual and empirical inquiry by way local case studies. Instead of the more ordinary abstract and global scientific realism, what we get is a doubly local scientific realism based on a bottom-up strategy. Representative formulations of the former kind are in terms of the truth and reality of the posits of current science, in terms of warranted belief, in terms of mind-independent unobservable entities. Using illustrations mainly from the social sciences, doubly local scientific realism denies the global applicability of such formulations and seeks to make adjustments in their elements in response to information about local units of science: It is sufficient for a realist to give the existence of an entity (and the truth of a theory) a chance, while in some areas we may be in s position to make justified claims about actual existence (and truth). Logical inquiry-independent existence is sufficient for the social and human sciences, while mind-independence will be fine for many other domains. It should not be insisted that the theoretical posits of realist science be strict unobservables in all areas: most theoretical posits of the social sciences are idealized commonsensibles, such as elements in folk psychology. Unsurprisingly, this sort of local strategy will create space for realism that is able to accommodate larger areas of science without sacrificing traditional realist intuitions.  相似文献   
866.
A model of contemporary butch identity has been constructed from the analysis of a series of semistructured interviews with butch-identified women who described their gender in relation to their own experiences and beliefs. The analytic process entailed a grounded theory approach (Glaser & Strauss, 1967). The results of the study describe how butch-identified women conceptualize their gender identity and how it affects their social relations within lesbian and heterosexual communities. The core category in this model (i.e., A Quest for Authenticity) frames butch identity as entailing an ongoing process of negotiation between an essential sense of lesbian gender and gender presentation demands that are understood in relation to the signification and meaning of genders across social contexts.  相似文献   
867.
We compare astronomers' removal of Pluto from the listing of planets and psychiatrists' removal of homosexuality from the listing of mental disorders. Although the political maneuverings that emerged in both controversies are less than scientifically ideal, we argue that competition for "scientific authority" among competing groups is a normal part of scientific progress. In both cases, a complicated relationship between abstract constructs and evidence made the classification problem thorny.  相似文献   
868.
ABSTRACT: This commentary examines the incursion on the neutrality of medical personnel now taking place as part of the human rights crises in Bahrain and Syria, and the ethical dilemmas which these incursions place not only in front of physicians practicing in those nations, but in front of the international community as a whole.In Bahrain, physicians have recently received harsh prison terms, apparently for treating demonstrators who clashed with government forces. In Syria, physicians are under the same political pressure to avoid treating political demonstrators or to act as informants against their own patients, turning them in to government authorities. This pressure has been severe, to the point that some physicians have become complicit in the abuse of patients who were also political demonstrators.This paper posits that physicians in certain countries in the Middle East during the "Arab Spring," specifically Syria and Bahrain, are being used as both political pawns and political weapons in clear violation of Geneva Convention and World Medical Association guidelines, and that this puts them into the most extreme sort of "dual loyalty" dilemma. They are being forced to choose between their own safety and well-being and that of their patients -- a negative sum scenario wherein there is no optimal choice. As such, an international call for a United Nations inquiry must be made in order to protect the neutrality of medical care and personnel during times of armed conflict.  相似文献   
869.
The death penalty by lethal injection is a legal punishment in the United States. Sodium Thiopental, once used in the death penalty cocktail, is no longer available for use in the United States as a consequence of this association. Anesthesiologists possess knowledge of Sodium Thiopental and possible chemical alternatives. Further, lethal injection has the look and feel of a medical act thereby encouraging physician participation and comment. Concern has been raised that the death penalty by lethal injection, is cruel. Physicians are ethically directed to prevent cruelty within the doctor-patient relationship and ethically prohibited from participation in any component of the death penalty. The US Supreme Court ruled that the death penalty is not cruel per se and is not in conflict with the 8th amendment of the US constitution. If the death penalty is not cruel, it requires no further refinement. If, on the other hand, the death penalty is in fact cruel, physicians have no mandate outside of the doctor patient relationship to reduce cruelty. Any intervention in the name of cruelty reduction, in the setting of lethal injection, does not lead to a more humane form of punishment. If physicians contend that the death penalty can be botched, they wrongly direct that it can be improved. The death penalty cocktail, as a method to reduce suffering during execution, is an unverifiable claim. At best, anesthetics produce an outward appearance of calmness only and do not address suffering as a consequence of the anticipation of death on the part of the condemned.  相似文献   
870.
The concept of the management of sexual offenders at risk for recidivism in Northrhine-Wesfalia (Konzeption zumUmgang mitrückfallgef?hrdetenSexualstraft?tern in Nordrhein-Westfalen, KURS NRW) came into effect on February 1, 2010 with a joint circular of the Ministries of Justice, Health and the Interior. Thereby Northrhine-Westfalia has created a systematic for monitoring sexual offenders at risk for recidivism, comparable to those already or in the meantime developed in other federal states in Germany. This article initially describes the procedural nature underlying the KURS concept, regarding mutual information routing and collaboration between the parties involved, i.e. justice, hospital order treatment, police and if necessary others as well. In addition, the framework in which KURS is ingrained, will be shown. Based on case reports this article will finally explain how actions and reactions will be specified in case conferences. Within the systematic KURS it is important that all participants reach all relevant information expeditiously, thus being able to react within their own jurisdiction. When planning actions it is essential to carefully consider the individual case parameters. Within the case conferences it remains a strength of the KURS concept that different perspectives of the case and the offender are bundled together. Ideally this and the case-specific actions will help to avoid similar offences to those committed previously.  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