全文获取类型
收费全文 | 990篇 |
免费 | 37篇 |
专业分类
1027篇 |
出版年
2022年 | 6篇 |
2020年 | 13篇 |
2019年 | 14篇 |
2018年 | 23篇 |
2017年 | 28篇 |
2016年 | 43篇 |
2015年 | 21篇 |
2014年 | 26篇 |
2013年 | 73篇 |
2012年 | 49篇 |
2011年 | 68篇 |
2010年 | 32篇 |
2009年 | 42篇 |
2008年 | 55篇 |
2007年 | 48篇 |
2006年 | 52篇 |
2005年 | 26篇 |
2004年 | 39篇 |
2003年 | 34篇 |
2002年 | 17篇 |
2001年 | 18篇 |
2000年 | 14篇 |
1999年 | 17篇 |
1998年 | 15篇 |
1997年 | 11篇 |
1996年 | 12篇 |
1995年 | 15篇 |
1994年 | 14篇 |
1993年 | 6篇 |
1992年 | 13篇 |
1991年 | 11篇 |
1990年 | 5篇 |
1989年 | 6篇 |
1988年 | 10篇 |
1987年 | 6篇 |
1986年 | 10篇 |
1985年 | 9篇 |
1984年 | 9篇 |
1983年 | 15篇 |
1982年 | 6篇 |
1981年 | 9篇 |
1980年 | 6篇 |
1979年 | 13篇 |
1978年 | 9篇 |
1977年 | 15篇 |
1976年 | 4篇 |
1975年 | 4篇 |
1972年 | 7篇 |
1971年 | 8篇 |
1970年 | 4篇 |
排序方式: 共有1027条查询结果,搜索用时 0 毫秒
41.
42.
43.
Gould MS Greenberg T Munfakh JL Kleinman M Lubell K 《Suicide & life-threatening behavior》2006,36(6):601-613
The purpose of this study was to examine the attitudes toward the use of telephone crisis services (hotlines) among 519 adolescents in 9th through 12th grade mandatory health courses in six high schools in New York State. Few adolescents (2.1%) used hotlines and negative attitudes were stronger toward hotlines than they were toward other formal sources of help. The most common reasons for hotline nonuse related to feelings of self-reliance and shame. Objections to hotlines were strongest among students most in need of help by virtue of impaired functioning or feelings of hopelessness. The results underscore needed outreach efforts to youth. 相似文献
44.
45.
46.
Hemophilia A and B are X-linked recessive inherited bleeding disorders that have a profound impact on the family of affected individuals. Education is vital to enable women to appreciate the implications of being a carrier and the implications for a prospective child. Prior research has shown that cultural, socio-economic and linguistic issues in South Africa are major barriers to communication for first-language Xhosa-speakers. This exploratory study aimed to investigate the basic knowledge of genetic inheritance among this cultural group in order to promote culturally-sensitive, effective genetic counseling. Ten in-depth interviews were conducted with Xhosa-speaking mothers or caregivers of boys with hemophilia. Results suggest that the participants had a very limited understanding of the clinical management, genetic consequences and cause of hemophilia. While treatment and care by health care service providers was fully accepted, several participants believed that traditional methods would provide them with more satisfactory explanations. These findings suggest that there is a critical need for socio-culturally tailored, language-specific education for families with hemophilia. 相似文献
47.
The primary objective of this study was to investigate the utility of the two-component theory of planned behaviour (TPB) in understanding physical activity intentions and behaviour in rural and small town breast cancer survivors. The secondary objective was to elicit the most common behavioural, normative and control beliefs of rural and small town survivors regarding physical activity. Using a cross-sectional survey design, 524 rural and small town breast cancer survivors completed a mailed survey that assessed physical activity and TPB variables. Physical activity intention explained 12% of the variance in physical activity behaviour (p?0.01) while the TPB constructs together explained 43% of the variance in physical activity intention (p?0.01). Unique behavioural, normative and control beliefs were elicited from the sample. The two-component TPB framework appears to be a suitable model to initiate an understanding of physical activity determinants among rural and small town breast cancer survivors. These data can be used in the development and establishment of physical activity behaviour interventions and health promotion materials designed to facilitate physical activity behaviour among rural and small town breast cancer survivors. 相似文献
48.
Lancioni GE Singh NN O'Reilly MF Sigafoos J Olivetti Belardinelli M 《Cognitive processing》2012,13(Z1):S219-S222
Persons with a diagnosis of minimally conscious state and pervasive motor disabilities tend to be passive and isolated. A way to help them improve their adaptive behavior (relate to their environment) involves the use of intervention packages combining assistive technology with motivational strategies. The types of assistive technology included in those packages may consist of (a) microswitches allowing direct access to environmental stimuli, (b) combinations of microswitches and voice output communication devices (VOCAs) allowing stimulus access and calls for caregivers' attention, respectively, and (c) computer presentations of stimulus options and microswitches allowing choice among those options and access to them. 相似文献
49.
50.
Christina L Fragale Mark F O'Reilly Jeannie Aguilar Nigel Pierce Russell Lang Jeff Sigafoos Giulio Lancioni 《Journal of applied behavior analysis》2012,45(3):565-577
We investigated the influence of motivating operations on the generalization of newly taught mands across settings and communication partners for 3 children with autism. Two conditions were implemented prior to generalization probes. In the first condition, participants were given access to a preferred item until they rejected the item (i.e., abolishing operation). In the second condition, the item was not available to participants prior to generalization probes (i.e., establishing operation). The effects of these conditions on the generalization of newly taught mands were evaluated in a multielement design. Results indicated differentiated responding during generalization probes in which more manding with the target mand was observed following the presession no‐access condition than in the presession access condition. These results support the consideration of motivating operations when assessing generalization of target mands to various untrained contexts. 相似文献