全文获取类型
收费全文 | 19654篇 |
免费 | 591篇 |
专业分类
各国政治 | 673篇 |
工人农民 | 816篇 |
世界政治 | 1264篇 |
外交国际关系 | 588篇 |
法律 | 12435篇 |
中国共产党 | 34篇 |
中国政治 | 185篇 |
政治理论 | 4031篇 |
综合类 | 219篇 |
出版年
2020年 | 238篇 |
2019年 | 273篇 |
2018年 | 372篇 |
2017年 | 452篇 |
2016年 | 464篇 |
2015年 | 379篇 |
2014年 | 388篇 |
2013年 | 1718篇 |
2012年 | 437篇 |
2011年 | 511篇 |
2010年 | 407篇 |
2009年 | 519篇 |
2008年 | 564篇 |
2007年 | 593篇 |
2006年 | 565篇 |
2005年 | 520篇 |
2004年 | 504篇 |
2003年 | 455篇 |
2002年 | 451篇 |
2001年 | 714篇 |
2000年 | 644篇 |
1999年 | 515篇 |
1998年 | 298篇 |
1997年 | 224篇 |
1996年 | 259篇 |
1995年 | 237篇 |
1994年 | 248篇 |
1993年 | 249篇 |
1992年 | 398篇 |
1991年 | 462篇 |
1990年 | 416篇 |
1989年 | 410篇 |
1988年 | 418篇 |
1987年 | 391篇 |
1986年 | 448篇 |
1985年 | 422篇 |
1984年 | 373篇 |
1983年 | 346篇 |
1982年 | 245篇 |
1981年 | 227篇 |
1980年 | 204篇 |
1979年 | 242篇 |
1978年 | 171篇 |
1977年 | 176篇 |
1976年 | 151篇 |
1975年 | 132篇 |
1974年 | 146篇 |
1973年 | 154篇 |
1972年 | 118篇 |
1971年 | 118篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
901.
902.
Susan J. Paxton Eleanor H. Wertheim Kay Gibbons George I. Szmukler Lynne Hillier Janice L. Petrovich 《Journal of youth and adolescence》1991,20(3):361-379
Body image and weight loss beliefs and behaviors were assessed in 341 female and 221 male high school students. Estimates of body dissatisfaction varied depending on the measurement strategy used. Despite having similar weight distributions around the expected norm, girls were significantly more dissatisfied with their bodies than boys. Body Mass Index was positively related to body dissatisfaction in girls and boys, while higher exercise levels were related to higher body satisfaction in boys. Nearly two-thirds of girls and boys believed being thinner would have an impact on their lives, but the majority of girls believed this would be positive while the majority of boys believed this would be negative. Thirteen percent of female subjects reported using one or more extreme weight loss behavior at least weekly. Beliefs regarding the effectiveness of different weight loss measures were assessed. Weight loss behaviors in this Australian sample appear similar to comparable U.S. samples.Received Ph.D. from University of Tasmania. Main research interest in body image, weight loss behaviors, and eating disorders.Received Ph.D. from University of Connecticut. Main research interest in body image, eating disorders and weight loss behaviors.Dietitian degree from Melbourne University, Melbourne. Main research interest in eating practices and clinical outcome.M.D. from University of Melbourne, D.P.M. from U.K. FRC Psych. Main research interests in eating disorders.B.B.Sc.(Hons.) received from La Trobe University, Melbourne, B.A. received from University of Minnesota, Duluth. Main research interest in attitudes and attributions.B.A. Received from University of Minnesota, Duluth. Main research interest in adolescence and eating disorders. 相似文献
903.
He is primary author of Ties That Bind: The Interdependence of Generations,a study that examines the framing of the generational equity debate. He is currently doing research for a book concerning
the planning of retirement of the baby boom generation. 相似文献
904.
905.
906.
Past research suggests that beliefs and emotions operate as partially distinct determinants of political attitudes. In addition, while positive and negative beliefs about a political object are bipolar in structure, positive and negative emotions have been demonstrated to be relatively independent. In this past research, beliefs and emotions have been assessed with different measures. Yet current models of survey responding suggest that responses to survey items are often influenced by the manner in which the researcher poses the questions. As such, it is not clear whether the uniqueness of these belief and emotion measures reflects a bona fide difference between two underlying constructs, or merely an artifactual difference induced by differing methods of measurement. In this study, beliefs and emotions are shown to operate as partially unique predictors of candidate evaluation even when employing corresponding methods of measurement. The independence of positive and negative emotion, however, only arises when employing a dichotomous measure. When employing ordinal measures, positive and negative emotions contain a substantial component of bipolarity. The theoretical implications of these findings are discussed. 相似文献
907.
908.
909.
910.