全文获取类型
收费全文 | 15803篇 |
免费 | 196篇 |
专业分类
各国政治 | 673篇 |
工人农民 | 1423篇 |
世界政治 | 656篇 |
外交国际关系 | 576篇 |
法律 | 9261篇 |
中国政治 | 47篇 |
政治理论 | 3310篇 |
综合类 | 53篇 |
出版年
2020年 | 97篇 |
2019年 | 127篇 |
2018年 | 1387篇 |
2017年 | 1356篇 |
2016年 | 1175篇 |
2015年 | 183篇 |
2014年 | 177篇 |
2013年 | 909篇 |
2012年 | 356篇 |
2011年 | 1063篇 |
2010年 | 1145篇 |
2009年 | 721篇 |
2008年 | 917篇 |
2007年 | 885篇 |
2006年 | 205篇 |
2005年 | 231篇 |
2004年 | 320篇 |
2003年 | 316篇 |
2002年 | 185篇 |
2001年 | 286篇 |
2000年 | 244篇 |
1999年 | 230篇 |
1998年 | 109篇 |
1997年 | 92篇 |
1996年 | 97篇 |
1995年 | 98篇 |
1994年 | 97篇 |
1993年 | 75篇 |
1992年 | 127篇 |
1991年 | 160篇 |
1990年 | 158篇 |
1989年 | 143篇 |
1988年 | 152篇 |
1987年 | 167篇 |
1986年 | 163篇 |
1985年 | 150篇 |
1984年 | 140篇 |
1983年 | 128篇 |
1982年 | 87篇 |
1981年 | 92篇 |
1980年 | 68篇 |
1979年 | 131篇 |
1978年 | 94篇 |
1977年 | 81篇 |
1976年 | 56篇 |
1975年 | 81篇 |
1974年 | 86篇 |
1973年 | 82篇 |
1972年 | 56篇 |
1971年 | 57篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
This paper presents a longitudinal study of alcohol use among college students. Three hypothesized predictors of alcohol use are found to have an independent effect when the other predictors and prior drinking are held constant: the drinking context of the dormitory living group, informal social involvement in college, and lack of commitment to religious and academic values. These predictors are also related to the onset of drinking during the freshman year for those who entered college as abstainers. The pattern varies somewhat for males and females, with the dormitory contextual effect larger for females. Formal involvement in college activities and psychological stress have no independent effect on drinking. The results are discussed in relation to previous work on alcohol use.This research was supported in part by NIAAA Grant AA02863 and NIMH Grant MH28177 and Veterans Administration Research funds.Received Ph.D. in sociology from Stanford University in 1976. Current research interests include adolescent development, statistics, and environmental studies.Received Ph.D. in psychology from University of California, Berkeley, in 1960. Current research interests are personal and environmental influences on behavior. 相似文献
992.
993.
994.
H P Hougen S Rogde K Poulsen 《The American journal of forensic medicine and pathology》1999,20(3):293-299
In this study we investigated homicides in the two Scandinavian capitals, Copenhagen, Denmark and Oslo, Norway, for the 10-year period from 1985 to 1994. The total number of homicides was 431; 63.8% occurred in Copenhagen and 36.2% in Oslo. The average homicide rate was 1.6/100,000 in Copenhagen and 1.8/100,000 in Oslo. Blunt force, sharp force, and strangulation were the most common methods. Firearms were also used but did not account for >20% in either of the two cities. This is probably due to strict gun laws in both countries. There was no clear difference between the homicide victim populations in the two cities with regard to age, gender, or social and marital status. The proportion of alcoholics and unemployed persons was much higher than in the background population and to a similar extent in both cities, indicating that the homicide victim populations differ from the background populations. The perpetrator knew the victim in the majority of the cases. The most frequent motives or circumstances in both cities were fights, family rows, financial controversies, or jealousy. 相似文献
995.
996.
Most corporations probably do not consider their in-house counsel to be potential qui tam threats. That may be a naive assumption. Case law provides an illustrative view of the legal ramifications involved when an attorney brings a qui tam suit. In general, there is no prohibition on attorneys who wish to bring these actions. Nevertheless, a corporation can take preventive steps to eliminate the likelihood of attorney qui tam actions. In addition, the corporation can take advantage of state professional ethics laws to mount a defensive action against the attorney who files any such action. 相似文献
997.
998.
Laura A. Reese 《政策研究评论》1999,16(2):175-193
This research note examines two models of economic development policymaking. The literature on economic development and urban politics provides one image of reality regarding the factors associated with economic development policy in cities. When tested empirically, however, this model is found wanting. An alternative model is presented, identifying the complex set of factors associated with a single governmental policy, in this case, tax abatements. 相似文献
999.
1000.
Journal of Youth and Adolescence - 相似文献