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   17717篇
  免费   711篇
  国内免费   4篇
  2019年   248篇
  2018年   320篇
  2017年   277篇
  2016年   329篇
  2015年   236篇
  2014年   307篇
  2013年   1473篇
  2012年   525篇
  2011年   590篇
  2010年   351篇
  2009年   377篇
  2008年   489篇
  2007年   511篇
  2006年   477篇
  2005年   403篇
  2004年   432篇
  2003年   392篇
  2002年   394篇
  2001年   479篇
  2000年   529篇
  1999年   360篇
  1998年   223篇
  1997年   168篇
  1996年   184篇
  1995年   180篇
  1994年   163篇
  1992年   289篇
  1991年   291篇
  1990年   303篇
  1989年   288篇
  1988年   274篇
  1987年   238篇
  1986年   254篇
  1985年   268篇
  1984年   199篇
  1983年   218篇
  1982年   168篇
  1980年   162篇
  1979年   254篇
  1978年   226篇
  1975年   218篇
  1974年   245篇
  1973年   269篇
  1972年   225篇
  1971年   210篇
  1970年   162篇
  1969年   195篇
  1968年   249篇
  1967年   239篇
  1966年   209篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
ABSTRACT In this essay the argument set forth by Michael Levin regarding the abnormality of homosexual behaviour is reviewed and criticized. Against his argument which holds that homosexual behaviour is abnormal because it constitutes an evolutionary aberration, I argue that Levin's and all similarly constructed arguments fail to show that evolutionary origins of sexual behaviour have any significant normative force. I contend that his notion of homosexuality is confused and that he fails to consider alternative methods of how homosexuality might have indeed served evolutionary adaptive purposes or been the result of surplus adaptations. I argue, too, that Levin's linking of unhappiness with homosexual behaviour is spurious and ill-supported. Consequently, I reject Levin's claims that public policy ought to do what it can to minimize the incidence of such behaviour. I argue by contrast that if happiness is the end of public policy decisions, then society ought to take what measures it can to protect persons in respect of their homosexual behaviour and identities.  相似文献   
12.
Convergent and divergent stereo mechanisms were compared in their ability to recover structure from motion. Contrary to a recent result reported by Richards and Lieberman, no difference in their performance was found; both mechanisms appeared equally capable of supporting the perception of good structure from motion. Possible reasons for the disparate results are discussed.  相似文献   
13.
14.
15.
16.
17.
This article examines the category of "liturgy" in its relation to aesthetics, ethics and politics. It is argued that liturgy occupies a unique mediating position between art and politics, for, on the one hand, it ensures that the political points perpetually beyond itself, and, on the other hand, the artistic is prevented from lapsing into a "magic circle" of compensatory reality or merely "fine" art. Alternative aesthetic formulations, for example, that of Adorno, are examined and shown to be problematic and ultimately nihilistic and unrealizable. By contrast, a liturgical aesthetic is shown to have a genuine ethical practicability. Modernity is then examined. It is argued that late capitalist structures—including (contra Paul Piccone) is apparently opposed structures, such a post-Fordist organicism—can be seen as a kind of anti-liturgy liturgy, or, one might say here, "ritual" (for all the latter term's more dubious post-nineteenth century assumptions can here be assumed), which has produced an entirely self-perpetuating minimal automated subjectivity. Finally, it is concluded that the manifold problems faced by non-liturgical aesthetics and politics can be reduced to this separation of the ideal from the real. This separation is further examined. The lineaments of a specific liturgical tradition—in this case, the Christian—and especially its eucharistic focus—are analyzed, and it is suggested that here one might find suggestions as to a fusion of the ideal and the real, and hence indications of how one might begin to outwit several of the problems in aesthetic and political theory already shown to involve difficulties.  相似文献   
18.
The authors used recursive partitioning methods to identify combinations of baseline characteristics that predict 2-year physical activity success in each of 3 physical activity interventions delivered in the multisite Activity Counseling Trial. The sample consisted of 874 initially sedentary primary care patients, ages 35-75 years, who were at risk for cardiovascular disease. Predictors of 2-year success were specific to each intervention and represented a range of domains, including physiological, demographic, psychosocial, health-related, and environmental variables. The results indicate how specific patient subgroups (e.g., obese, unfit individuals; high-income individuals in stable health) may respond differently to varying levels and amounts of professional assistance and support. The methods used provide a practical first step toward identifying clinically meaningful patient subgroups for further systematic investigation.  相似文献   
19.
Human communication is thoroughly context bound. We present two experiments investigating the importance of the shared context, that is, the amount of knowledge two interlocutors have in common, for the successful emergence and use of novel conventions. Using a referential communication task where black‐and‐white pictorial symbols are used to convey colors, pairs of participants build shared conventions peculiar to their dyad without experimenter feedback, relying purely on ostensive‐inferential communication. Both experiments demonstrate that access to the visual context promotes more successful communication. Importantly, success improves cumulatively, supporting the view that pairs establish conventional ways of using the symbols to communicate. Furthermore, Experiment 2 suggests that dyads with access to the visual context successfully adapt the conventions built for one color space to another color space, unlike dyads lacking it. In linking experimental pragmatics with language evolution, the study illustrates the benefits of exploring the emergence of linguistic conventions using an ostensive‐inferential model of communication.  相似文献   
20.
By roughly 6 years of age, children acquire the stereotype that men are more competent than women in science, technology, engineering, and mathematics (STEM), potentially leading to greater trust in scientific information provided by men. This study tested whether 3- to 8-year-old children differentially endorsed conflicting information about science and toys presented by male and female informants depicted as a ‘man’ and ‘woman’ (Exp1) or ‘scientists’ (Exp2). Children were expected to endorse toy testimony from gender-matched informants; thus, the key question concerned endorsement of science testimony. In Exp1 (N = 149), boys and girls showed a same-gender informant preference for toy testimony; however, girls endorsed the male informant's testimony more for science than for toys – but only when tested by a male experimenter. In Exp2 (N = 264), boys and girls showed a same-gender preference, irrespective of content. Findings suggest that STEM-related gender stereotypes might lead girls to trust scientific information presented by men over women in certain contexts.  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