全文获取类型
收费全文 | 14989篇 |
免费 | 1271篇 |
专业分类
各国政治 | 534篇 |
工人农民 | 483篇 |
世界政治 | 1055篇 |
外交国际关系 | 401篇 |
法律 | 11221篇 |
中国共产党 | 1篇 |
中国政治 | 116篇 |
政治理论 | 2363篇 |
综合类 | 86篇 |
出版年
2020年 | 378篇 |
2019年 | 385篇 |
2018年 | 453篇 |
2017年 | 520篇 |
2016年 | 526篇 |
2015年 | 478篇 |
2014年 | 478篇 |
2013年 | 1420篇 |
2012年 | 335篇 |
2011年 | 456篇 |
2010年 | 593篇 |
2009年 | 557篇 |
2008年 | 375篇 |
2007年 | 325篇 |
2006年 | 440篇 |
2005年 | 315篇 |
2004年 | 315篇 |
2003年 | 305篇 |
2002年 | 285篇 |
2001年 | 586篇 |
2000年 | 460篇 |
1999年 | 385篇 |
1998年 | 178篇 |
1997年 | 174篇 |
1996年 | 138篇 |
1995年 | 175篇 |
1994年 | 185篇 |
1993年 | 167篇 |
1992年 | 293篇 |
1991年 | 309篇 |
1990年 | 284篇 |
1989年 | 281篇 |
1988年 | 281篇 |
1987年 | 254篇 |
1986年 | 294篇 |
1985年 | 322篇 |
1984年 | 292篇 |
1983年 | 256篇 |
1982年 | 173篇 |
1981年 | 159篇 |
1980年 | 147篇 |
1979年 | 178篇 |
1978年 | 120篇 |
1977年 | 101篇 |
1976年 | 83篇 |
1975年 | 101篇 |
1974年 | 116篇 |
1973年 | 88篇 |
1972年 | 82篇 |
1971年 | 85篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
992.
993.
994.
995.
Jeffrey A. Goldman Charles M. Rosenzweig Ann D. Lutter 《Journal of youth and adolescence》1980,9(2):153-162
Similarity of ego identity status, assessed by Marcia's four-category classification system, was related to interpersonal attraction. Using male and female college students as subjects, this study found that (1) while all judges preferred targets who had or who are undergoing a crisis to those who have not had a crisis, (2) diffuse judges preferred targets with no commitments to those with commitments, and (3) judges with commitments preferred a foreclosure target more than judges without commitments. Differential evaluations of the targets' intelligence, knowledge of current events, adjustment, and morality were also found. Results are discussed both in terms of previous research positively relating personality similarity to attraction and Erikson's theory of the relationship between ego identity development and intimacy in interpersonal relations. 相似文献
996.
Robert D. Enright Daniel K. Lapsley Ann E. Drivas Lawrence A. Fehr 《Journal of youth and adolescence》1980,9(6):529-545
Two studies were undertaken to examine parental influences on autonomy and identity development. In Study 1, 262 adolescents in seventh and eleventh grades were given Kurtines's autonomy measure, Simmons's identity measure, and Elder's questions regarding the adolescents' perceptions of their parents' autocratic, democratic, or permissive parenting styles. Study 2 was a replication with 168 subjects. Across both studies it was found that sex-role socialization is more influential for automony development than is either level of parental power or age. Both age and father's use of democracy were the most influential variables on identity development.Received Ph.D. from the University of Minnesota. Major interests are adolescent social cognition and social development.Major interests are adolescent social cognition and social development.Major interests are adolescent social cognition and social development.Received Ph.D. from the University of Cincinnati. Major interests are cognitive development and theories of personality. 相似文献
997.
998.
Morgan D 《Journal of health law》1999,32(2):269-306
Alzheimer's Disease presents extreme challenges not only to the individuals afflicted with it and their families, but also to both our legal and healthcare systems. The nature of the disease is such that current legal standards and requirements simply fail to function in an appropriate manner. So too, the health system currently is not in a position to handle the anticipated influx of Alzheimer's patients over the next several decades. This Article examines some of the challenges presented by this disease, and suggests several possible methods to improve our response to it. 相似文献
999.
Starr NJ 《Journal of health law》1999,32(1):115-137
As more Blue Cross/Blue Shield Organizations employ various means to convert to for-profit status, myriad issues arise concerning the proper treatment of assets that were accumulated during the not-for-profit years of such organizations. Moreover, state officials face pressure from all sides to assure that the conversion process is "fair." In the following Article, the author examines the conversion of Blue Cross and Blue Shield of Georgia to demonstrate the various conversion issues that arise under traditional legal principles--as well as the means by which that Blue employed newly enacted legislation to avoid many of the requirements that otherwise would have attended its conversion. 相似文献
1000.
The occurrence of pallidal lesions with or without other hypoxic/ischaemic brain injuries was evaluated in 100 intravenous (i.v.) heroin addicts. The brains were collected consecutively from forensic autopsies during the period from January 1995 to June 1996. The autopsies were required by the police and performed at The Institute of Forensic Medicine, The National Hospital, Oslo. There were 21 women and 79 men, median age 32 (range 21-47) and 34 (19-60) years, respectively. Of 38 brains with abnormalities, twenty-five cases showed isolated or combined lesions of hypoxic/ischaemic origin. Pallidal lesions were found in nine brains; six lesions were old, one was subacute (a couple of weeks), and two were part of recent, generalized hypoxia/ischaemia. Six persons had old infarcts in the hippocampal formation, and one of them in combination with old pallidal infarcts. In seven brains small and old infarcts were found in watershed areas in the cerebellum. Between five and ten percent of i.v. heroin addicts might have pallidal infarcts, either as the sole lesion, or combined with other manifestations of hypoxic/ischaemic brain injury. This might give severe mental disturbances in the affected persons. 相似文献