全文获取类型
收费全文 | 15407篇 |
免费 | 491篇 |
专业分类
各国政治 | 544篇 |
工人农民 | 1271篇 |
世界政治 | 654篇 |
外交国际关系 | 523篇 |
法律 | 9678篇 |
中国政治 | 39篇 |
政治理论 | 3149篇 |
综合类 | 40篇 |
出版年
2020年 | 162篇 |
2019年 | 176篇 |
2018年 | 1427篇 |
2017年 | 1381篇 |
2016年 | 1220篇 |
2015年 | 263篇 |
2014年 | 201篇 |
2013年 | 804篇 |
2012年 | 342篇 |
2011年 | 1070篇 |
2010年 | 1198篇 |
2009年 | 794篇 |
2008年 | 879篇 |
2007年 | 842篇 |
2006年 | 175篇 |
2005年 | 227篇 |
2004年 | 352篇 |
2003年 | 297篇 |
2002年 | 163篇 |
2001年 | 315篇 |
2000年 | 261篇 |
1999年 | 230篇 |
1998年 | 107篇 |
1997年 | 78篇 |
1996年 | 87篇 |
1995年 | 114篇 |
1994年 | 112篇 |
1993年 | 91篇 |
1992年 | 155篇 |
1991年 | 159篇 |
1990年 | 149篇 |
1989年 | 163篇 |
1988年 | 131篇 |
1987年 | 140篇 |
1986年 | 131篇 |
1985年 | 133篇 |
1984年 | 114篇 |
1983年 | 126篇 |
1982年 | 90篇 |
1981年 | 79篇 |
1980年 | 57篇 |
1979年 | 116篇 |
1978年 | 78篇 |
1977年 | 65篇 |
1976年 | 53篇 |
1975年 | 49篇 |
1974年 | 55篇 |
1973年 | 56篇 |
1972年 | 44篇 |
1968年 | 41篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
931.
Matthew B. Wright 《Public Choice》1993,76(1-2):103-123
Several empirical studies have suggested that legislators engage in a surprisingly large degree of on-the-job consumption, or ideological behavior. These findings cast doubt on the hypothesis that legislators can be modelled as though they seek to maximize political support. This paper attempts to determine whether commonly used proxies for ideology in fact represent behavior to which voters are averse. The results show that legislators who engage in more of this behavior lose general-election support without generally receiving compensating increases in partyprimary support. A corollary to this result is that voters punish shirking legislators significantly. 相似文献
932.
Discrimination Distress During Adolescence 总被引:1,自引:0,他引:1
Fisher Celia B. Wallace Scyatta A. Fenton Rose E. 《Journal of youth and adolescence》2000,29(6):679-695
Amidst changing patterns of accommodation and conflict among American ethnic groups, there remains a paucity of research on the nature and impact of racial and ethnic discrimination on development in multiethnic samples of youth. The Adolescent Discrimination Distress Index along with measures of caregiver racial bias preparation and self-esteem was administered to 177 adolescents drawn from 9th–12th graders self-identified as African American, Hispanic, East Asian, South Asian, and non-Hispanic white. Youth from all ethnic backgrounds reported distress associated with instances of perceived racial prejudice encountered in educational contexts. Instances of institutional discrimination in stores and by police were higher for older youth and particularly for African American and Hispanic teenagers. Encounters with peer discrimination were reported most frequently by Asian youth. Reports of racial bias preparation were associated with distress in response to institutional and educational discrimination and self-esteem scores were negatively correlated with distress caused by educational and peer discrimination. The importance of research on discrimination distress to understanding adolescent development in multiethnic ecologies is discussed here. 相似文献
933.
934.
935.
936.
937.
938.
939.
2016 coroner's crematorial inquests of the Bonn Institute of Legal Medicine over a 3 years' period were evaluated and the statements in the death certificates were compared to those ones of the Statistical Country Office of Northrhine-Westphalia. No significant differences were found with respect to age, gender and reason of death. However, the number of insufficiently classified deaths with respect to the reason of death were overrepresented especially in cases of older women, while the number of unnatural deaths was generally underrepresented. According to legal medical criteria 2 1/4 per cent of the deaths were falsely classified as natural. Only in 2 cases an autopsy was accomplished. Other author's statements on the validity of death certificates were confirmed. 相似文献
940.
After surgical treatment of an inguinal hernia, a 26-year-old male was discharged from hospital with a well healing surgical wound. Four weeks later he was admitted again with a major localized painful swelling of the soft tissues, whereas the clinical examination revealed no further local or systemic signs of inflammation. The immediate operation disclosed no abscess formation, but a large colliquation necrosis of the subcutaneous tissue with an outstanding petroleum-like odour. On toxicological examination of the necrotic tissue, a respective petroleum distillate was found. The patient was confronted with the suspicion of having injected the petroleum preparation himself to prolong the wound healing and finally admitted the self-mutilating behaviour. The pathophysiology, clinical history and morphological findings are discussed in comparison with case reports of chemically induced self-mutilation. 相似文献