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   9894篇
  免费   877篇
  国内免费   656篇
  2024年   27篇
  2023年   178篇
  2022年   129篇
  2021年   186篇
  2020年   403篇
  2019年   442篇
  2018年   407篇
  2017年   442篇
  2016年   377篇
  2015年   284篇
  2014年   352篇
  2013年   1149篇
  2012年   225篇
  2011年   357篇
  2010年   326篇
  2009年   396篇
  2008年   495篇
  2007年   554篇
  2006年   567篇
  2005年   476篇
  2004年   456篇
  2003年   339篇
  2002年   285篇
  2001年   183篇
  2000年   147篇
  1999年   144篇
  1998年   112篇
  1997年   91篇
  1996年   73篇
  1995年   65篇
  1994年   52篇
  1993年   53篇
  1992年   39篇
  1991年   24篇
  1990年   25篇
  1989年   29篇
  1987年   19篇
  1985年   162篇
  1984年   168篇
  1983年   137篇
  1982年   129篇
  1981年   108篇
  1980年   113篇
  1979年   106篇
  1978年   155篇
  1977年   103篇
  1976年   99篇
  1975年   79篇
  1974年   71篇
  1973年   69篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
This process evaluation study examined what variables moderate and mediate treatment effects on days in stable housing and client satisfaction for homeless mentally ill clients. In general, demographic characteristics did not moderate either outcome variable. Housing contacts, entitlement contacts, mental health contacts, and supportive services were significant mediators of the treatment effect on days in stable housing. Program contacts, mental health contacts, and supportive services were significant mediators of client satisfaction. The authors thank the National Institute of Mental Health for their financial support (MH43248, MH42357) for this project, Dorothy Gano for word processing and editorial assistance, and Gitry Heydebrand, Melissa Dannelet, Betty Tempelhoff, Ruth Smith, and Laeeq Ahmad for assisting in the interviews of clients. We are also appreciative of the cooperation given to us by the staffs of Malcolm Bliss Mental Health Center, St. Patrick's Center, the Community Advocacy and Support Alliance Program, and the St. Louisemergency shelters. Finally, we thank all of the participants in this study; we hope that their homelessness has now ended. (The conclusions presented in this paper are the sole responsibility of the authors and do not necessarily reflect official National Institute for Mental Health policy.)  相似文献   
142.
Information is sparse on the social context of illicit drug injection behaviors and their relationship to HIV infection. This study examined relationships between injection settings, injecting with others, and HIV risk behaviors of sharing needles and not cleaning contaminated needles in a sample of 630 inner-city injecting drug users in Baltimore, MD. Through open-ended interviews, five primary settings of injection behavior were identified. These settings included one's own, friends' and mother's residence, shooting galleries, and semipublic areas. Most participants reported injecting in their own residence (92%) and friends' residence (86%) in the prior 6 months. In a multiple regression analysis, injecting at friends' residence, in shooting galleries, and in semipublic areas and frequency of injecting with others were significantly associated with frequency of sharing uncleaned needles, “slipping” (i.e., failure to disinfect shared needles), and not always cleaning used needles before injecting. Results suggest that interventions may benefit from targeting settings as well as behaviors to reduce the spread of HIV. This research was supported by grants DA04334, DA05911, DA06313, and DA08985 from the National Institute on Drug Abuse.  相似文献   
143.
A questionnaire assessing various aspects of paid as well as unpaid forms of productive activity was mailed to stratified samples of male and female white collar workers, approximately matched for educational and occupational level. Data from 501 men and 679 women employed full time revealed traditional gender differences in terms of main responsibility for household duties, child care etc. In keeping with this, women reported higher levels of work overload, stress and conflict than men, which increased significantly with the number of children at home. The various stress indices reached a peak between the ages of 35 and 39. Men reported more autonomy in their paid work whereas women reported more control at home. Men and women at the upper managerial levels reported more control over their total work situation and less conflict between demands.  相似文献   
144.
Two studies were conducted, the first to establish a valid Spanish version of the Daily Stress Inventory (DSI). A second study was conducted using the bilingual version of the DSI to assess differences in the level of stress experienced by three selected Hispanic groups: (a) very Hispanic/Hispanic-oriented bicultural, (b) true bicultural, and (c) Anglo-oriented bicultural/very Anglicized as determined by the adapted version of the Acculturation Rating Scale for Mexican Americans (ARSMA). It was expected that stress levels would be highest for the least acculturated group. The results of the first study indicate that the Bilingual DSI scores are highly correlated with the scores of the original DSI when both instruments are responded to simultaneously by fully bilingual individuals. In Study 2, the initial data analyses showed no difference in the level of stress reported by Hispanics at different levels of acculturation as measured by the ARSMA. When a median-split method was employed, differences in the DSI I/E measures between the two groups were significant, suggesting that acculturation level may be related to stress level.  相似文献   
145.
Circular definitions,circular explanations,and infinite regresses   总被引:2,自引:0,他引:2  
This paper discusses some of the ways in which circular definitions and circular explanations entail or fail to entail infinite regresses. And since not all infinite regresses are vicious, a few criteria of viciousness are examined in order to determine when the entailment of a regress refutes a circular definition or a circular explanation.I would like to thank Professors Robert Tully, Howard Sobel, and Derek Allen for their constructive comments.  相似文献   
146.
Demystification, eschewing roles that disempower others and enhancing accessibility to the tools of knowledge, are consistent with the aims of community and applied social psychology. Although a focus on psychological empowerment can be a distraction from the need for actual power, it can also enhance it. Psychologists who avoid victim blaming and individual causal attribution biases can contribute to the discourse about social change. This requires both a reinterpretation of the known facts, and a reframing of social analysis. Social scientists and professionals are today's theologians and priests. Our power lies in our legitimation as interpreters of social reality. Teaching the psychology of empowerment, participative decision making and informed consent can influence the powerful as well as the powerless.  相似文献   
147.
《尚书》、《左传》、《国语》的心理学思想研究   总被引:3,自引:0,他引:3  
《尚书》、《左传》、《国语》是我国最古老的三部文献。我国古代的心理学思想有不少都可以在其中找到源头。本文主要讨论:《尚书》的五行观念、人贵论和人性论思想、认知心理思想、个性心理思想、心理测验思想;《左传》的情感心理思想、病理心理思想、文艺心理思想;《国语》的缺陷心理思想。  相似文献   
148.
The efficacy of three different schedules of reinforcement for promoting and sustaining drug abstinence was compared in this study. Cigarette smoking was studied as an exemplar of stimulant drug self-administration. Sixty cigarette smokers were assigned to one of three groups (progressive rate of reinforcement, fixed rate of reinforcement, and yoked control). Participants in all three groups were asked to refrain from smoking for 1 week. Participants in the progressive and fixed groups achieved greater mean levels of abstinence than those in the control group. Participants in the progressive group were significantly less likely to resume smoking when they became abstinent than participants in the other groups.  相似文献   
149.
Let S be a deductive system such that S-derivability (s) is arithmetic and sound with respect to structures of class K. From simple conditions on K and s, it follows constructively that the K-completeness of s implies MP(S), a form of Markov's Principle. If s is undecidable then MP(S) is independent of first-order Heyting arithmetic. Also, if s is undecidable and the S proof relation is decidable, then MP(S) is independent of second-order Heyting arithmetic, HAS. Lastly, when s is many-one complete, MP(S) implies the usual Markov's Principle MP.An immediate corollary is that the Tarski, Beth and Kripke weak completeness theorems for the negative fragment of intuitionistic predicate logic are unobtainable in HAS. Second, each of these: weak completeness for classical predicate logic, weak completeness for the negative fragment of intuitionistic predicate logic and strong completeness for sentential logic implics MP. Beth and Kripke completeness for intuitionistic predicate or sentential logic also entail MP.These results give extensions of the theorem of Gödel and Kreisel (in [4]) that completeness for pure intuitionistic predicate logic requires MP. The assumptions of Gödel and Kreisel's original proof included the Axiom of Dependent Choice and Herbrand's Theorem, no use of which is explicit in the present article.  相似文献   
150.
Described the Physical and Architectural Characteristics Inventory (PACI), which assesses the physical characteristics of hospital- and community-based psychiatric and substance abuse residential treatment programs for adults. Developed using data from 94 representative programs, the PACI has 7 dimensions that assess community accessibility, physical features that add convenience, aid recreation, and provide support for patients, and space for patient and staff functions. In comparison to community-based programs (n=63), hospital programs (n=31) had more social-recreational and prosthetic aids, safety features, staff facilities, and space. The PACI dimensions were also related to other organizational features, such as facility ownership and program size and staffing level. Programs with more physical amenities had patients who were more involved in self-initiated and community activities and were more likely to successfully complete the program and be discharged to independent living situations and paid jobs. Programs with more social-recreational and prosthetic aids, space, and access to community resources also had better patient outcomes. In addition, PACI dimensions were related to observers' ratings of facility attractiveness. Potential applications of the PACI and the full inventory of which it is a part are discussed.  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