全文获取类型
收费全文 | 19787篇 |
免费 | 809篇 |
国内免费 | 4篇 |
出版年
2021年 | 157篇 |
2020年 | 259篇 |
2019年 | 276篇 |
2018年 | 408篇 |
2017年 | 423篇 |
2016年 | 457篇 |
2015年 | 353篇 |
2014年 | 453篇 |
2013年 | 2133篇 |
2012年 | 778篇 |
2011年 | 821篇 |
2010年 | 523篇 |
2009年 | 528篇 |
2008年 | 786篇 |
2007年 | 738篇 |
2006年 | 685篇 |
2005年 | 690篇 |
2004年 | 678篇 |
2003年 | 646篇 |
2002年 | 684篇 |
2001年 | 364篇 |
2000年 | 271篇 |
1999年 | 318篇 |
1998年 | 321篇 |
1997年 | 312篇 |
1996年 | 271篇 |
1995年 | 261篇 |
1994年 | 233篇 |
1993年 | 254篇 |
1992年 | 253篇 |
1991年 | 216篇 |
1990年 | 208篇 |
1989年 | 175篇 |
1988年 | 167篇 |
1987年 | 184篇 |
1986年 | 175篇 |
1985年 | 215篇 |
1984年 | 251篇 |
1983年 | 257篇 |
1982年 | 250篇 |
1981年 | 252篇 |
1980年 | 210篇 |
1979年 | 201篇 |
1978年 | 245篇 |
1977年 | 230篇 |
1976年 | 227篇 |
1975年 | 201篇 |
1974年 | 217篇 |
1973年 | 173篇 |
1968年 | 110篇 |
排序方式: 共有10000条查询结果,搜索用时 197 毫秒
981.
John L. Recchiuti 《Journal of the history of the behavioral sciences》1995,31(2):149-161
Boldly asserting the existence of an intellectual class, this article details the efforts of one stratum of that class to rise to political power through the creation and development of the Rand School of Social Science in New York. The author argues that the founders of the Rand School used the social sciences—disciplines which they were themselves shaping and popularizing—to promote their political agenda. The school's founders trained an intelligentsia from the working class in the outlook and methods of the social sciences as part of their efforts to redirect the nation's political agenda toward socialism. Finding the social sciences a politically contested terrain, the author offers a history of the founding and administration of the Rand School, describes the pedagogical role of men and women in it, and details the political repression which the school endured as its influence grew. A number of notable intellectuals were associated with the school, among them Franklin H. Giddings, Charlotte Perkins Gilman, Morris Hillquit, Algernon Lee, and Scott Nearing. Previously unpublished information regarding the renowned historians Charles and Mary Beard's involvement with the American Socialist Society and the Rand School is of particular interest. 相似文献
982.
An experiment was performed to study the effect of chronic ethanol administration on intermale aggression in rats using a 24-hour resident-intruder test. During the resident-intruder test residents displayed virtually all of the agonistic behaviors, and intruders displayed virtually all of the defensive behaviors. Intruders treated with ethanol displayed more defensive behavior and elicited more agonistic behavior than control intruders. Twenty minutes into the resident-intruder test intruders showed the greatest increase in corticosterone (338% vs. 129%), while residents showed the greatest increase in testosterone (103% vs. 18%). On the 2nd day of the resident-intruder test intruders lost more weight than residents (21.5 g vs. 10.2 g). Plasma corticosterone levels remained elevated for the intruders, and in particular for those intruders displaying defensive behaviors regardless of the resident's behavior. Plasma testosterone levels remained elevated for those residents that were paired with intruders that displayed defensive behaviors regardless of the resident's behavior. The frequency and severity of biting attacks by ethanol residents was significantly greater than that of control residents. In addition, the locus of biting attack shifted from the upper back of intruders paired with control residents to the flanks, tail, lower feet, and ventral surface on intruders paired with ethanol residents. 相似文献
983.
Tamsin K. Saxton Kristofor McCarty Jasmine Caizley Dane McCarrick Thomas V. Pollet 《British journal of psychology (London, England : 1953)》2020,111(3):492-507
Several lab-based studies have indicated that when people are hungry, they judge larger women's bodies as more attractive, compared to when they are satiated. These satiety-dependent judgements are assumed to provide explanatory power when it comes to the noted cross-cultural differences in attitudes towards women's adiposity, whereby people who live in regions that are under greater nutritional stress tend to have more favourable attitudes towards bigger bodies. However, it is premature to assume that women's bodies are the proper or actual domain of the satiety-dependent judgement shifts found within research study testing contexts until stimuli other than female bodies have also been tested: The research programme falls into the trap of confirmation bias unless we also seek out disconfirmatory evidence and test the boundaries of the effects of hunger. Accordingly, we collected attractiveness judgements of female and male bodies manipulated to vary in size by varying level of adiposity, and objects manipulated to vary in size, from 186 participants who also reported their current hunger level. We found that larger sizes of stimuli in general, and women's bodies in particular, especially when judged by women, were judged as more attractive by the hungrier participants. We discuss these patterns in the context of the Insurance Hypothesis, the Environmental Security Hypothesis, and the impact of hunger on acquisition. 相似文献
984.
John B. King Jr. 《Dialog》2020,59(3):225-232
Lutheran antipathy toward the law is harmful to Christian ethics. This antipathy arises from the false notion that law and gospel are opposed. However, the Lutheran Confessions show that law–gospel distinction does not necessarily imply law–gospel opposition. When law and gospel are properly defined, they interrelate harmoniously within a multiperspectival model of Christian ethics. Moreover, the third use of the law then emerges as the basic and primary use. 相似文献
985.
John S. Rolland 《Family process》2020,59(3):922-936
The COVID-19 pandemic has a pervasive effect on all aspects of family life. We can distinguish the collective societal and community effects of the global pandemic and the risk and disease impact for individuals and families. This paper draws on Rolland’s Family Systems-Illness (FSI) model to describe some of the unique challenges through a multisystemic lens. Highlighting the pattern of psychosocial issues of COVID-19 over time, discussion emphasizes the evolving interplay of larger systems public health pandemic challenges and mitigation strategies with individual and family processes. The paper addresses issues of coping with myriad Covid-19 uncertainties in the initial crisis wave and evolving phases of the pandemic in the context of individual and family development, pre-existing illness or disability, and racial and socio-economic disparities. The discussion offers recommendations for timely family oriented consultation and psychoeducation, and for healthcare clinician self-care. 相似文献
986.
987.
Julia L. Ferguson Maddison J. Majeski John McEachin Ronald Leaf Joseph H. Cihon Justin B. Leaf 《Journal of applied behavior analysis》2020,53(4):1876-1888
Telehealth research in the field of applied behavior analysis (ABA) has focused on the training and supervision of others to implement various behavior analytic procedures. Current guidelines for practicing telehealth suggest that direct telehealth services may be appropriate for some individuals diagnosed with autism spectrum disorder, but more research is needed. This study evaluated the effects of discrete trial teaching with instructive feedback in a dyad arrangement delivered directly via telehealth to teach tact relations to 6 children diagnosed with autism spectrum disorder. All participants and the experimenter were located in different physical locations. All participants learned their primary and secondary targets, and 5 of the participants acquired the observational primary and secondary targets without direct teaching. Areas of future research and clinical implications are discussed in the context of telehealth service delivery. 相似文献
988.
Synthese - Some arguments are good; others are not. How can we tell the difference? This article advances three proposals as a partial answer to this question. The proposals are keyed to arguments... 相似文献
989.
Synthese - Shortly after the publication of this paper, I had the opportunity to discuss related issues with Thomas Grundmann, who convinced me that the final section contains a demonstrable mistake. 相似文献
990.