全文获取类型
收费全文 | 521篇 |
免费 | 20篇 |
国内免费 | 2篇 |
出版年
2021年 | 8篇 |
2020年 | 5篇 |
2019年 | 8篇 |
2018年 | 22篇 |
2017年 | 18篇 |
2016年 | 13篇 |
2015年 | 12篇 |
2014年 | 14篇 |
2013年 | 58篇 |
2012年 | 16篇 |
2011年 | 29篇 |
2010年 | 18篇 |
2009年 | 19篇 |
2008年 | 26篇 |
2007年 | 14篇 |
2006年 | 14篇 |
2005年 | 19篇 |
2004年 | 13篇 |
2003年 | 14篇 |
2002年 | 12篇 |
2001年 | 6篇 |
2000年 | 11篇 |
1999年 | 7篇 |
1998年 | 9篇 |
1997年 | 5篇 |
1996年 | 8篇 |
1994年 | 8篇 |
1993年 | 11篇 |
1992年 | 6篇 |
1991年 | 6篇 |
1990年 | 5篇 |
1989年 | 12篇 |
1988年 | 6篇 |
1987年 | 6篇 |
1986年 | 4篇 |
1985年 | 3篇 |
1984年 | 6篇 |
1983年 | 4篇 |
1982年 | 6篇 |
1981年 | 8篇 |
1980年 | 4篇 |
1979年 | 6篇 |
1977年 | 3篇 |
1975年 | 3篇 |
1973年 | 3篇 |
1971年 | 4篇 |
1970年 | 8篇 |
1966年 | 2篇 |
1964年 | 3篇 |
1963年 | 2篇 |
排序方式: 共有543条查询结果,搜索用时 15 毫秒
51.
52.
Abstract With a smoking rate of 30% of the population Switzerland has one of the highest rates of all industrialised countries. Changes in smoking status over eight years are examined by analysing the course of non-smokers, former smokers and current smokers between 1987 and 1995. Stages of change and addiction variables, as well as their interaction, are analysed for 1987 as predictors of smoking status in 1995.A sample of 953 non-smokers and former and current smokers was interviewed in 1987 and followed up in 1995. Between 1987 and 1995 every fifth non-smoker (20.9%) began smoking. The higher one is in the stage hierarchy the higher the probability of forward than of backward movement. Within the stages of change the likelihood of cessation is moderated by addiction variables. Thus, in the case of contemplating smokers in 1987, the more cigarettes they smoked daily at that time the less likely they were to be former smokers by 1995, but for preparating smokers who had already made an attempt to quit the converse holds - the more they smoked in 1987, the more likely they were to be non-smokers eight years later. The same holds for former smokers in 1987: former moderate smokers then were more likely to relapse than former heavy smokers. The implications for prevention and intervention are discussed. 相似文献
53.
James Dilley Willi McFarland William Woods James Sabatino Tania Lihatsh Barbara Adler 《Psychology & health》2013,28(2):235-246
Men who had high-risk sex with men in the previous year ( N = 124) were asked to recall their thought processes at the time they last had unprotected anal sex with a man who was HIV-positive or of unknown serostatus. Self-justifications for non-condom use were examined individually and in internally validated scales. The most common single self-justification was I want to have unprotected sex because it feels good , endorsed by 76%. Other common thoughts included the notion that it is only human to slip up occasionally (59%) and the resolution to withdraw before ejaculation (59%). For scaled items, the most strongly endorsed themes were: (1) that condoms reduce sexual pleasure (any of 6 items endorsed at least slightly by 90%); (2) fatalism or leaving it to chance (11 items, 81%); and (3) loss of control (9 items, 77%). The thoughts and themes identified may be useful in planning individual and community prevention messages. 相似文献
54.
This study investigated the relationship between psychological birth order position and different types and levels of prosocial tendencies. An ex postfacto, between-family research design was used. Data on prosocial tendencies were obtained from 888 college students (females = 80.4%, mean age = 20.94 yrs, SD = 2.83; males = 19.6%, mean age = 21.62 yrs, SD = 2.44). Participants completed a biographical questionnaire as well as the Prosocial Tendencies Measure (Carlo & Randall, 2002). Data were analysed to compare and contrast prosocial tendencies between demographics using parametric ANOVAs, t tests and the Mann-Whitney Test. Significant differences in prosocial tendency scores were only found between middle-borns and last-borns on altruism, with middle-borns scoring significantly higher in prosocial tendencies than last-borns. There is no evidence to suggest that a definitive link between prosocial tendencies and birth order exists in this study. 相似文献
55.
Is the Generality Problem too General? 总被引:1,自引:0,他引:1
Reliabilism holds that knowledge is true belief reliably caused. Reliabilists should say something about individuating processes; critics deny that the right degree of generality can be specified without arbitrariness. It is argued that this criticism applies as well to processes mentioned in scientific explanations. The gratuitous puzzles created thereby show that the "generality problem" is illusory. 相似文献
56.
57.
Gerhard Andersson Christina Hägnebo 《Journal of clinical psychology in medical settings》2003,10(1):35-39
The aim was to study coping strategies among hearing-impaired individuals by using a validated coping instrument—The Ways of Coping Questionnaire (WOCQ; S. Folkman & R. Lazarus, 1988)—and to relate the use of coping with anxiety sensitivity and experience of hearing impairment. A questionnaire booklet was sent out to the members of the local branch of the Swedish Hard of Hearing Association. Ninety-four members responded to the questionnaire, yielding a 53% response rate. Primary outcome measures were the WOCQ, the Anxiety Sensitivity Index, and visual analogue scale rating of discomfort from hearing impairment. Repeated measures analysis of WOCQ subscales showed that the participants used planful problem solving and self-controlling coping strategies whereas escape/avoidance responses were less frequently used than the other coping strategies. Anxiety sensitivity was associated with escape/avoidance coping (r = .63, p < .0001). In conclusion, hearing-impaired individuals do not use escape/avoidance coping more than other coping strategies. However, escape/avoidance coping is associated with anxiety sensitivity, suggesting that sensitivity to anxiety sensations is an important associated factor. Coping strategies were not associated with discomfort from hearing impairment in any meaningful way. 相似文献
58.
59.
Gerhard Weber 《Cognitive Science》1996,20(2):195-236
Modeling the learner is a central aspect of intelligent tutoring systems and knowledge-based help systems that support learners in complex problem-solving domains. In this article, the episodic learner model ELM is introduced as a hybrid system that analyses novices' solutions to programming tasks based on both rule-based and case-based reasoning. ELM behaves like to a human tutor. Initially, ELM is able to analyze problem solutions based only on its domain knowledge. With increasing knowledge about a particular learner captured in a dynamic episodic case base, it adapts to the learner's individual problem-solving behavior. Two simulation studies were performed to validate the system. The first study shows that the system can learn which rules are applied successfully to diagnose code produced by programmers and that using this information reduces the computational effort of diagnoses. Using information from the episodic learner model additionally speeds up the diagnostic process. The second study shows that ELM is able to predict individual solutions. Finally, correspondences and differences to related systems are discussed. 相似文献
60.