全文获取类型
收费全文 | 1154篇 |
免费 | 74篇 |
国内免费 | 2篇 |
出版年
2023年 | 7篇 |
2022年 | 9篇 |
2021年 | 16篇 |
2020年 | 27篇 |
2019年 | 53篇 |
2018年 | 36篇 |
2017年 | 48篇 |
2016年 | 30篇 |
2015年 | 41篇 |
2014年 | 33篇 |
2013年 | 143篇 |
2012年 | 44篇 |
2011年 | 50篇 |
2010年 | 31篇 |
2009年 | 34篇 |
2008年 | 49篇 |
2007年 | 48篇 |
2006年 | 57篇 |
2005年 | 35篇 |
2004年 | 39篇 |
2003年 | 40篇 |
2002年 | 39篇 |
2001年 | 25篇 |
2000年 | 29篇 |
1999年 | 23篇 |
1998年 | 13篇 |
1997年 | 7篇 |
1996年 | 13篇 |
1995年 | 8篇 |
1994年 | 9篇 |
1993年 | 9篇 |
1992年 | 15篇 |
1991年 | 7篇 |
1990年 | 6篇 |
1989年 | 6篇 |
1988年 | 9篇 |
1987年 | 7篇 |
1986年 | 8篇 |
1985年 | 10篇 |
1984年 | 7篇 |
1983年 | 7篇 |
1978年 | 12篇 |
1975年 | 5篇 |
1974年 | 9篇 |
1973年 | 9篇 |
1971年 | 5篇 |
1969年 | 9篇 |
1968年 | 7篇 |
1967年 | 5篇 |
1966年 | 6篇 |
排序方式: 共有1230条查询结果,搜索用时 31 毫秒
1.
2.
3.
Knut Erik Tranøy 《Theoretical medicine and bioethics》1988,9(3):337-350
In Norway, by tradition a Lutheran country, the puritan ethics of a “moral minority” has a strong influence on the development and manifestations of medical ethics. Those who exert this influence are found primarily among politicians, the clergy, and, last but certainly not least, among nurses and doctors. The focus of interest is not so much on problems of bioethical moral theory or the teaching of bioethics to students, but very much on attitudes and policies with regard to substantive issues traditionally regarded in Norway as burning bioethical issues, such as: medical research ethics, abortion, prenatal diagnosis, euthanasia, definitions of death, and reproductive technologies. 相似文献
4.
The present study examined the relationship between adolescents' attitudes toward suicide and their psychosocial background. It also evaluated the association between attitudes toward suicide and the subjects' own suicidal tendencies. A questionnaire assessing these issues was administered to 525 Israeli adolescents. Results indicated that significantly more females, nonreligious adolescents, those exposed to suicidal behavior, and those with increased suicidal risk held more accepting attitudes. Ethnic origin, socioeconomic status, and living in intact/nonintact families were not associated with adolescents' attitudes toward suicide. 相似文献
5.
Humans and monkeys show intermittent arm movements while tracking moving targets. This intermittency has been explained by postulating either a psychological refractory period after each movement and/or an error deadzone, an area surrounding the target within which movements are not initiated. We present a technique to detect and quantify the size of this deadzone, using a compensatory tracking paradigm that distinguishes it from a psychological refractory period. An artificial deadzone of variable size was added around a visual target displayed on a computer screen. While the subject was within this area, he received visual feedback that showed him to be directly on target. The presence of this artificial deadzone could affect tracking performance only if it exceeded the size of his intrinsic deadzone. Therefore, the size of artificial deadzone at which performance began to be affected revealed the size of the intrinsic deadzone. Measured at the subjects' eye, the deadzone was found to vary between 0.06 and 0.38 degrees, depending on the tracking task and viewing conditions; on the screen, this range was 1.3 mm to 3.3 mm. It increased with increasing speed of the target, with increasing viewing distance, and when the amplitude of the movement required was reduced. However, the deadzone size was not significantly correlated with the subjects' level of performance. We conclude that an intrinsic deadzone exists during compensatory tracking, and we suggest that its size is set by a cognitive process not simply related to the difficulty of the tracking task. 相似文献
6.
7.
8.
A combined multi-attribute utility and expectancy-value model has repeatedly been found to yield a worse fit to choices than to preference ratings. The present study investigated two possible explanations for this finding. First, people's belief-value structures may change in the choice task as they try to find the best alternative. Second, a difficult choice task may cause the decision maker to use simplifying heuristics. In the first of two experiments, subjective belief-value structures were measured on two occasions separated by about one week. Immediately before the second measurement, different groups of subjects performed a choice task, gave preference ratings, or performed a control task. The results did not support an interpretation of the greater difficulty of predicting choices in terms of changes in belief-value structures. However, the notion of simplifying heuristics received support by the finding that adopting simpler versions of the original model improved the predictions of the choices. In the second experiment, beliefs were measured immediately before or after each of a series of choices or preference ratings. The results indicated that although temporary changes in beliefs may occur, they can hardly provide a full account of the differential predictability of preferences and choices. 相似文献
9.
M H Stein 《Journal of the American Psychoanalytic Association》1989,37(1):65-88
Secondary revision is a highly provocative concept arising out of Freud's attempts to explain the construction of dreams, but it remains relatively ill-defined. It includes three related, yet by no means identical aspects of the process by which the dream acquires its more or less final form during the experiencing, the remembering, and the telling. It represents one of the most interesting hypotheses dealing with the fluid world between sleeping and waking, a field which still presents us with a host of unanswered questions. Secondary revision not only reflects the higher levels of the dreamer's mental functioning superimposed on his biological substructure, but it also operates as a sensitive indicator of the cultural factors which have helped mold his personality. These factors include both the subculture of the analytic situation and the impact of society in the larger sense. I make reference to individual dreamers in analysis and to the world of dreams recorded in the past from our own and other cultures. 相似文献
10.
The empirical research pertaining to the effectiveness of telephone counseling and referral systems personnel was critically reviewed. The assessment was organized according to several evaluation strategies that researchers have utilized to evaluate effectiveness. These strategies included, for example, client self-reports, client "shows" versus "no-shows" following referral, data pertaining to suicide rates, counselor ratings of personal effectiveness, and phone workers' ability to offer empathy to clients. It was concluded that discussions of effectiveness should be constrained by a careful consideration of the specific index of efficacy chosen by investigators as well as methodological issues associated with current research in this area. There is reason to believe that the availability of telephone crisis services may be related to reduced suicide rates among young white females. Also, there is a significant need to empirically associate counseling technique and indices of effectiveness with substantive measures of client outcome in future research. Additional topics reviewed include the probable differential effectiveness of lay workers with various presenting problems of clients, and the role that training and maturity seem to play in successful interventions. Guidelines for the use of evaluation techniques which coincide with service goals are also offered. 相似文献