首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   74169篇
  免费   3384篇
各国政治   4768篇
工人农民   3034篇
世界政治   6672篇
外交国际关系   4143篇
法律   35365篇
中国共产党   11篇
中国政治   786篇
政治理论   21799篇
综合类   975篇
  2021年   437篇
  2020年   1210篇
  2019年   1569篇
  2018年   1797篇
  2017年   2118篇
  2016年   2328篇
  2015年   1891篇
  2014年   2176篇
  2013年   11094篇
  2012年   1782篇
  2011年   1908篇
  2010年   1944篇
  2009年   2164篇
  2008年   1966篇
  2007年   1972篇
  2006年   2070篇
  2005年   1943篇
  2004年   1856篇
  2003年   1668篇
  2002年   1674篇
  2001年   1865篇
  2000年   1611篇
  1999年   1422篇
  1998年   1205篇
  1997年   1081篇
  1996年   1029篇
  1995年   981篇
  1994年   1020篇
  1993年   1024篇
  1992年   1075篇
  1991年   1112篇
  1990年   1027篇
  1989年   1089篇
  1988年   1068篇
  1987年   1077篇
  1986年   1070篇
  1985年   1108篇
  1984年   998篇
  1983年   1057篇
  1982年   951篇
  1981年   904篇
  1980年   703篇
  1979年   753篇
  1978年   622篇
  1977年   566篇
  1976年   527篇
  1975年   448篇
  1974年   445篇
  1973年   439篇
  1972年   391篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
This study investigated the impact of the abolition of the tender years doctrine on custody decisions in divorce cases. This doctrine supported the presumption that the mother is the more suitable parent for young children. In March of 1981, the Supreme Court of the State of Alabama found this doctrine to be unconstitutional. To assess the hypothesis that this ruling had a significant effect on custodyrelated decisions, a sample of court records for divorce cases in an Alabama county was examined as representative of the state on a number of key variables. Overall, no significant differences were found on indicator variables for the comparisons before and after the ruling. There was neither an increase in custody grants to fathers nor an increase in custody requests by fathers.  相似文献   
992.
The American health care system appears to suffer from higher costs and less access than the health care systems of other industrialized nations. This perception has set social scientists searching for "lessons from abroad." This paper places the dialogue about health system lessons within the context of American political culture. It sketches out some of the distinctive dynamics in the American policymaking process. Those dynamics help explain the problems we face, the programs we have pursued, and the alternatives we have foregone. The same political process which shaped past policies is likely to frame any lessons we try to import from abroad.  相似文献   
993.
The case of the death by arsenic poisoning of a 62-year-old white man is presented. One year prior to death, he developed intermittent bouts of severe gastroenteritis with vomiting and diarrhea, hyperpigmentation and keratosis of the skin, neutropenia, and Guillain-Barré-like neuropathy for which he was hospitalized several times. Urine test results 6 months prior to death indicating 36 mg/L arsenic were believed to be in error. At the patient's last admission, he appeared in the emergency room with severe gastroenteritis, hypotension, and dehydration. He died 3 days later. Antemortem as well as autopsy specimens revealed elevated arsenic concentrations. Arsenic micrograms/g analysis by neutron activation of hair pulled from the man's head revealed by centimeter segmental analysis proximal to distal: 226, 104, 28, 56, 41, 40, and 74. The wife of the decedent was charged with murder by arsenic poisoning of this, her fifth, husband. The defense alleged that the decedent had committed suicide. The judge awarded a directed verdict of "not guilty." Particulars of the medical, toxicological, and investigative findings are presented.  相似文献   
994.
995.
996.
In the summer of 1984, police in Pinellas County, Florida, confiscated six identically colored imported Asian skulls (in a shipping case) from a private citizen. In May 1988, in nearby Hillsborough County, police confiscated a very similar skull from another private citizen, who allegedly had found it in an abandoned house. Aside from slight color differences between the six found in Pinellas County and the one found in Hillsborough County, the skulls are virtually identical in their osteological characteristics and condition and in the vital statistics derived from each. Each skull is as clean and dry as those typically sold by commercial scientific supply outlets in the United States. Each is edentulous (primarily premortem), between approximately 20 and 60 years of age at death, and morphologically Asian. Five of the seven are morphologically male, one is morphologically female, and one is a mosaic with respect to gender-related features. Police, medical examiners, coroners, and forensic anthropologists should be aware of such "souvenir" specimens, in the event that they encounter similar skulls. Discriminant function analyses for race and sex yield considerably conflicting results, which underscores the need for using extreme caution when interpreting forensic science estimates based on such techniques.  相似文献   
997.
998.
999.
Certain Biblical passages if interpreted literally can be understood as advocating the use of corporal punishment in disciplining children. The purpose of this research was to determine if persons affiliated with religious denominations which emphasized a literal belief in the Bible would demonstrate less appropriate attitudes with regard to discipline than their counterparts who were affiliated with religious denominations which do not subscribe to a literal interpretation of the Bible. The sample consisted of 881 persons who were members of denominations classified as literal or nonliteral believers. Statistically significant differences were noted on the Physical Punishment Scale of the Adult Adolescent Parenting Inventory with persons, regardless of gender or their level of education, who were members of churches subscribing to a literal belief in the Bible preferring the use of corporal punishment over alternate methods of discipline as compared to their nonliteral counterparts.  相似文献   
1000.
A risk marker analysis of assaulted wives   总被引:1,自引:0,他引:1  
In the wife assault literature, a number of risk markers have been identified. Using the data of the female respondents to the National Family Violence Survey (n = 699), a multivariate analysis was performed to examine which risk factors best differentiated between women involved in nonviolent relationships, verbally aggressive relationships, relationships exhibiting minor physical aggression and severely violent relationships. High levels of marital conflict and lower socioeconomic status emerged as the primary predictors of an increased likelihood of wife assault. Research implications are discussed.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号