全文获取类型
收费全文 | 79028篇 |
免费 | 3162篇 |
国内免费 | 40篇 |
出版年
2020年 | 843篇 |
2019年 | 1077篇 |
2018年 | 1504篇 |
2017年 | 1553篇 |
2016年 | 1592篇 |
2015年 | 1100篇 |
2014年 | 1358篇 |
2013年 | 6533篇 |
2012年 | 2424篇 |
2011年 | 2648篇 |
2010年 | 1539篇 |
2009年 | 1575篇 |
2008年 | 2366篇 |
2007年 | 2332篇 |
2006年 | 2104篇 |
2005年 | 1894篇 |
2004年 | 1860篇 |
2003年 | 1685篇 |
2002年 | 1743篇 |
2001年 | 2501篇 |
2000年 | 2314篇 |
1999年 | 1804篇 |
1998年 | 979篇 |
1997年 | 809篇 |
1996年 | 768篇 |
1995年 | 758篇 |
1992年 | 1447篇 |
1991年 | 1387篇 |
1990年 | 1363篇 |
1989年 | 1272篇 |
1988年 | 1238篇 |
1987年 | 1188篇 |
1986年 | 1219篇 |
1985年 | 1321篇 |
1984年 | 1045篇 |
1983年 | 949篇 |
1982年 | 756篇 |
1979年 | 1091篇 |
1978年 | 808篇 |
1976年 | 759篇 |
1975年 | 948篇 |
1974年 | 1034篇 |
1973年 | 1043篇 |
1972年 | 880篇 |
1971年 | 796篇 |
1970年 | 746篇 |
1969年 | 779篇 |
1968年 | 964篇 |
1967年 | 896篇 |
1966年 | 833篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
Although a great deal of research has been conducted on the relationship between social support and physical health, the contribution of personality characteristics to this relationship has rarely been assessed. Structural equation modeling was employed to derive and test a model of the direct and indirect relationships between personality characteristics, social network size, the perceived availability of support, socially supportive behaviors, and perceived physical health with a sample of Pennsylvania adults. Significant paths indicate that individuals who perceive themselves as affiliative and as help seekers and help givers report larger social networks, receive more socially supportive behaviors, and perceive that more support is available to them. The perception that support is available shared a direct relationship with perceived physical health. The utility of including multiple measures of social support and personality characteristics related to receiving support in investigations of the relationship between social support and physical health is discussed. 相似文献
93.
Suicides among older adults in the United States and Canada in the last decade have accounted for an increasing share of all suicides. In both countries the use of firearms among older adults has steadily increased. Despite these trends, little is known about the extent to which crisis centers are prepared to prevent elder suicide. A survey of AAS-listed crisis prevention centers examined the training, knowledge, and current practices relevant to elder suicide among personnel in 321 crisis prevention centers in both countries. Results revealed insufficient training, a lack of familiarity with recent suicide trends, and limited outreach to older adults. 相似文献
94.
The country‐of‐origin effect is a topic central to the field of international marketing. Country of origin has been found to exert a particularly potent effect on consumer evaluation in situations where there is a strong link between a country and a particular product category. The present study provides further insight into how this particular effect can be understood. Drawing on a novel conceptualization of how country image and product categories interact, this study tested the relative evaluative relevance of product category with respect to estimates of brand equity across a variety of product categories. The findings suggest that facets of a country's image that are more closely related to the evaluation situation exert a greater influence on the evaluation of brands. This result encourages scholars as well as practitioners to re‐evaluate which situations might cause the country of origin effect to hold managerial relevance and paves the way for new paths toward a more comprehensive understanding of the effect. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
95.
96.
97.
Informed by theory and research on attributions and narrative persuasion, we compared the effectiveness of narrative and nonnarrative messages in changing attributions of responsibility for causes and solutions related to obesity in the United States. We randomly assigned 500 adults to view one of three messages (narrative, evidence, and a hybrid of the two) emphasizing environmental causes of obesity, or a no‐exposure control condition. The narrative condition increased the belief that societal actors (government, employers) are responsible for addressing obesity, but only among liberals. This pattern of results was partially explained by the success of the narrative condition in reducing reactive counterarguing, relative to the evidence condition, among liberals. We conclude with theoretical and practical implications. 相似文献
98.
99.
100.