全文获取类型
收费全文 | 910篇 |
免费 | 53篇 |
出版年
2020年 | 17篇 |
2019年 | 24篇 |
2018年 | 20篇 |
2017年 | 34篇 |
2016年 | 31篇 |
2015年 | 19篇 |
2014年 | 26篇 |
2013年 | 97篇 |
2012年 | 43篇 |
2011年 | 39篇 |
2010年 | 22篇 |
2009年 | 26篇 |
2008年 | 29篇 |
2007年 | 37篇 |
2006年 | 29篇 |
2005年 | 20篇 |
2004年 | 29篇 |
2003年 | 22篇 |
2002年 | 19篇 |
2001年 | 21篇 |
2000年 | 17篇 |
1999年 | 15篇 |
1998年 | 8篇 |
1997年 | 8篇 |
1996年 | 10篇 |
1995年 | 14篇 |
1994年 | 10篇 |
1993年 | 12篇 |
1992年 | 13篇 |
1991年 | 13篇 |
1990年 | 12篇 |
1989年 | 10篇 |
1988年 | 9篇 |
1987年 | 6篇 |
1986年 | 10篇 |
1985年 | 11篇 |
1984年 | 14篇 |
1983年 | 11篇 |
1982年 | 6篇 |
1981年 | 8篇 |
1980年 | 9篇 |
1979年 | 13篇 |
1978年 | 14篇 |
1975年 | 14篇 |
1973年 | 14篇 |
1972年 | 8篇 |
1971年 | 8篇 |
1969年 | 7篇 |
1968年 | 11篇 |
1966年 | 7篇 |
排序方式: 共有963条查询结果,搜索用时 15 毫秒
161.
Until the advent of plastinated cadavers, few outside the medical professions have had firsthand experience with human corpses. Such opportunities are now available at the Body Worlds exhibits of Gunther von Hagens. After an overview of these exhibits, we explore visitor responses as revealed in comment books available upon exiting the exhibit. Cultural, philosophical, and religious issues raised in the comments serve as a microcosm of society at large. The conclusion considers the challenge of such exhibits in introducing the public to science education, notes the image of the body as machine-so prevalent in the West-reflected in visitor comments, and finds hope that the exhibits promote, for many visitors, a sense of community among all humankind. 相似文献
162.
Dominguez FJ Lawrence C Halpern EF Drohan B Grinstein G Black DM Smith BL Gadd MA Specht M Kopans DB Moore RH Hughes SS Roche CA Hughes KS 《Journal of genetic counseling》2007,16(3):341-345
The self-reporting of cancer history is becoming increasingly important, as it frequently guides medical decision-making.
We studied the accuracy of personal cancer history using a self-administered questionnaire, comparing the results with the
Tumor Registry at our institution. Among 39,662 records, we identified 3614 women with a single cancer in the Tumor Registry
who reported none or one cancer on their questionnaire. The sensitivity in self-reporting cancers was 85.7%, ranging from
92.1% for breast cancer to 42.9% for leukemia. The accuracy for breast cancer and Hodgkin's Lymphoma was significantly better
than other cancers (p=0.00027, CI: 1.4–3.88). Analysis of patient's characteristics showed that Caucasians reported breast cancer more accurately
than Asian/Pacific Islanders (p=0.008), and those with Jewish ancestry more accurately than non-Jewish (p=0.0435). These results will help us to improve data collection and thus improve medical decision-making. 相似文献
163.
164.
This study investigated the link between meditation, self-reported mindfulness and cognitive flexibility as well as other attentional functions. It compared a group of meditators experienced in mindfulness meditation with a meditation-naïve control group on measures of Stroop interference and the “d2-concentration and endurance test”. Overall the results suggest that attentional performance and cognitive flexibility are positively related to meditation practice and levels of mindfulness. Meditators performed significantly better than non-meditators on all measures of attention. Furthermore, self-reported mindfulness was higher in meditators than non-meditators and correlations with all attention measures were of moderate to high strength. This pattern of results suggests that mindfulness is intimately linked to improvements of attentional functions and cognitive flexibility. The relevance of these findings for mental balance and well-being are discussed. 相似文献
165.
We investigate the processes underlying the feeling of control over one’s actions (“sense of agency”). Sense of agency may depend on internal motoric signals, and general inferences about external events. We used priming to modulate the sense of agency for voluntary and involuntary movements, by modifying the content of conscious thought prior to moving. Trials began with the presentation of one of two supraliminal primes, which corresponded to the effect of a voluntary action participants subsequently made. The perceived interval between movement and effect was used as an implicit measure of sense of agency. Primes modulated perceived intervals for both voluntary and involuntary movements, but the modulation was greatest for involuntary movements. A second experiment showed that this modulation depended on prime–movement (temporal) contiguity. We propose that sense of agency is based on a combination of internal motoric signals and external sensory evidence about the source of actions and effects. 相似文献
166.
S. Ratneshwar Lawrence W. Barsalou Cornelia Pechmann Melissa Moore 《Journal of Consumer Psychology》2001,10(3):147-157
Prior research often emphasized a stimulus‐based or bottom‐up view of product category representations. In contrast, we emphasize a more purposeful, top‐down perspective and examine categories that consumers might construct in the service of salient (i.e., highly accessible) goals. Specifically, we investigate how the point of view imposed by salient consumer goals might affect category representations assessed by participants’ similarity judgments of food products. A key factor in our study is that we examine both individual and situational sources of variability in goal salience. In addition, we also vary the surface‐level, visual resemblance of the stimulus pairs of foods used in the study. The results suggest that personal goals (e.g., health) and situational goals (e.g., convenience) act in conjunction and exert a systematic impact on category representations. Both types of goals, when salient, enhanced the perceived similarity of goal‐appropriate products and reduced the similarity of product pairs when only one product was ideal for the particular goal. The similarity‐enhancing effect was most pronounced when the surface resemblance between the products was low, and the similarity‐diminishing effect was more apparent when surface resemblance was high. Implications are discussed for current theoretical assumptions regarding categorization in consumer research. 相似文献
167.
Quyen Q. Tiet Hector R. Bird Christina W. Hoven Ping Wu Robert Moore Mark Davies 《Journal of child and family studies》2001,10(3):347-365
Maternal psychopathology has long been recognized as a risk factor for psychopathology in offspring; however, some resilient youth achieve a favorable outcome in the presence of maternal psychopathology. We identified factors that predicted resilience among youth who were exposed to adverse life events, and also examined whether the same factors protected youth against maternal psychopathology and adverse life events. Main and interaction effects of child and family factors were examined employing cross-sectional data from a household probability sample of 1285 youth aged 9 through 17 collected at four sites. On average, children exhibited a greater degree of resilience when they had higher IQ, closer parental monitoring, better family functioning, higher educational aspiration, and were female. Interaction between maternal psychopathology and IQ was significant, and there was a trend between maternal psychopathology and gender. A higher IQ is a protective factor against both maternal psychopathology and adverse life events; whereas being a girl seems to be a protective factor against maternal psychopathology, but not adverse life events. 相似文献
168.
In this study, the romantic beliefs, styles of relating, sex-role traits, and social self-efficacy of 433 young people from three cultural groups were assessed and their links with relationship status and loneliness explored. A majority cultural group (Anglo-Australians) was compared with two minority groups (Chinese- and Southern European-background young people) within the same society. Chinese-background youth were less likely to be in a romantic relationship and more likely to be lonely than Anglo-Australian or Southern European-Australians. Greater loneliness was associated with non-secure relationship styles, lower social self-efficacy, and lower scores on psychosocial femininity and masculinity. Predictors of relationship status included romantic attitudes and relationship styles. Some evidence pointed to stronger social efficacy and more secure relationship styles being associated with greater acculturation but it was rather weak and inconsistent. 相似文献
169.
From the rapidly growing literature on bullying, it is increasingly recognised that peer relationship problems as manifested in being bullied are associated with low self‐esteem. However, the literature on self‐esteem in relation to children who bully others is controversial. The objective of this paper is to elucidate further our understanding of the relationship between self‐concept and bullying behaviour. Data from a nationwide study of bullying behaviour carried out in Ireland during 1993‐1994 have been reviewed. The relevant results from 8,249 school children aged 8 to 18 years are presented. The paper examines the global and dimensional nature of self‐esteem and how it relates to children and adolescents who either have been victimised or bullied others. A distinction is made between “pure victims,” “pure bullies,” and children and adolescents who were both bullied and who bullied others. In other words, pure victims were those who had not bullied others, and pure bullies had not themselves been bullied. Those who were both bullied and bullied others were subdivided further into victims who bully occasionally, sometimes, and frequently and bullies who are victimised, occasionally, sometimes, and frequently. The results show that children of both primary and post‐primary age who were involved in bullying as victims, bullies, or both had significantly lower global self‐esteem than did children who had neither bullied nor been bullied. However, the pure bullies, in contrast to the pure victims, placed the same value on their physical attractiveness and attributes and on their popularity as did their peers who had not bullied others or been bullied. The bully‐victims of all ages had the lowest self‐esteem of the subgroups in the study. Also, the more frequently children were victimised or bullied others, the lower was their global self‐esteem. The typology and frequency of bullying and the age of the children when they were involved in bullying influenced the status of the specific domains of self‐esteem. There were, e.g., significant differences in anxiety between the pure bullies of post‐primary age and their peers who had not bullied others or been bullied. The post‐primary children who bullied most frequently were the least anxious. The results indicate that high self‐esteem protects children and adolescents from involvement in bullying. Thus, in view of the strong relationship between self‐esteem and bullying that has been found in the present paper, it is recommended that top priority be given by parents and teachers to preventing and reducing feelings of poor self‐worth among children and adolescents. Aggr. Behav. 27:269–283, 2001. © 2001 Wiley‐Liss, Inc. 相似文献
170.