全文获取类型
收费全文 | 801篇 |
免费 | 28篇 |
出版年
2022年 | 6篇 |
2021年 | 6篇 |
2019年 | 13篇 |
2018年 | 19篇 |
2017年 | 22篇 |
2016年 | 25篇 |
2015年 | 9篇 |
2014年 | 18篇 |
2013年 | 86篇 |
2012年 | 25篇 |
2011年 | 26篇 |
2010年 | 20篇 |
2009年 | 25篇 |
2008年 | 29篇 |
2007年 | 25篇 |
2006年 | 24篇 |
2005年 | 22篇 |
2004年 | 26篇 |
2003年 | 27篇 |
2002年 | 27篇 |
2001年 | 9篇 |
2000年 | 17篇 |
1999年 | 12篇 |
1998年 | 19篇 |
1997年 | 12篇 |
1996年 | 13篇 |
1995年 | 8篇 |
1994年 | 12篇 |
1993年 | 7篇 |
1992年 | 11篇 |
1991年 | 14篇 |
1990年 | 8篇 |
1989年 | 11篇 |
1988年 | 6篇 |
1987年 | 16篇 |
1986年 | 7篇 |
1985年 | 7篇 |
1984年 | 9篇 |
1983年 | 12篇 |
1981年 | 10篇 |
1980年 | 8篇 |
1979年 | 9篇 |
1977年 | 8篇 |
1976年 | 8篇 |
1975年 | 10篇 |
1974年 | 7篇 |
1973年 | 10篇 |
1972年 | 7篇 |
1968年 | 8篇 |
1966年 | 9篇 |
排序方式: 共有829条查询结果,搜索用时 312 毫秒
1.
2.
3.
The acquired immune deficiency syndrome (AIDS) has rapidly become the most serious medical consequence of injecting illicit drugs. Its potential impact on intravenous (IV) drug use is enormous. Human immunodeficiency virus (HIV, also known as HTLV-III and LAV), the virus that causes AIDS, appears, usually, to lead to lifelong infection. At present there is no effective treatment, and the treatments under development may require lifelong antiviral therapy. Since most of the antibody produced in response to HIV infection does not neutralize the virus, and since there is substantial genetic variation in the virus, it will be difficult to develop a vaccine. Even after vaccines are developed, testing their safety and efficacy will be formidable problems. Until either effective treatment or vaccines are developed, control of the epidemic among IV drug users must be attempted through behavior change/prevention efforts. In this paper we will review the epidemiology of AIDS among IV drug users and characteristics of the IV drug-use subculture relevant to prevention efforts. We will then identify different target groups for these prevention efforts, present available evidence about behavior change in these groups, and then briefly discuss how to prevent transmission of HIV to heterosexual partners who are not themselves IV drug users and to the children of IV drug users. 相似文献
4.
Joseph M. Byrne Daphne J. Smith Joan E. Backman 《Journal of abnormal child psychology》1987,15(2):239-246
This study evaluated the clinical validity of the Intellectual Screening, Development, and Achievement scales of the Personality Inventory for Children-Revised (PIC-R), as well as the newly derived PIC-R Factor IV scale, in identifying cognitive impairment in a clinic-referred sample of preschoolers. The clinical validity of these PIC-R subscales was also compared to that of the Minnesota Child Development Inventory (MCDI). The results showed that the PIC-R scales and Factor IV were reasonably successful in identifying cognitively impaired preschoolers, but much less successful in identifying cognitively normal preschoolers. Overall, the MCDI was the most successful in correctly identifying the preschoolers' cognitive status. 相似文献
5.
Higher levels of affiliation motivation after exposure to affiliative films are significantly related to higher dopamine concentrations in saliva in one study of 61 college students of both sexes, and in plasma in another study of 47 adults of both sexes. Individuals high in dispositionaln Affiliation, if they also reported high life stress, showed high gains in dopamine concentration in plasma after exposure to an affiliative film significantly more often than other individuals. Since aroused affiliation motivation was not associated with higher concentrations of norepinephrine, epinephrine, or cortisol in either study, it appears likely that dopamine is especially associated with arousal of affiliation motivation, just as norepinephrine has been found to be associated with arousal of power motivation. Thus, different motives may be subserved by different hormones, making it unlikely that all motives lead to the same state of physiological arousal.This research was carried out when all the authors were connected with the Department of Psychology and Social Relations at Harvard University. We acknowledge with thanks the support of the John D. and Catherine T. MacArthur Foundation through a grant to the senior author. 相似文献
6.
7.
Don Ihde 《The Southern journal of philosophy》1970,8(4):399-408
8.
9.
10.
Attraction and similarity of personality characteristics 总被引:2,自引:0,他引:2