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   16472篇
  免费   549篇
  国内免费   5篇
各国政治   663篇
工人农民   731篇
世界政治   1083篇
外交国际关系   546篇
法律   10637篇
中国共产党   6篇
中国政治   154篇
政治理论   3036篇
综合类   170篇
  2020年   224篇
  2019年   273篇
  2018年   335篇
  2017年   389篇
  2016年   396篇
  2015年   292篇
  2014年   307篇
  2013年   1482篇
  2012年   451篇
  2011年   482篇
  2010年   401篇
  2009年   416篇
  2008年   496篇
  2007年   542篇
  2006年   525篇
  2005年   474篇
  2004年   461篇
  2003年   496篇
  2002年   425篇
  2001年   673篇
  2000年   542篇
  1999年   479篇
  1998年   246篇
  1997年   168篇
  1996年   200篇
  1995年   172篇
  1994年   199篇
  1993年   194篇
  1992年   325篇
  1991年   357篇
  1990年   345篇
  1989年   285篇
  1988年   323篇
  1987年   274篇
  1986年   323篇
  1985年   286篇
  1984年   231篇
  1983年   218篇
  1982年   177篇
  1981年   190篇
  1980年   128篇
  1979年   174篇
  1978年   123篇
  1977年   108篇
  1976年   96篇
  1975年   124篇
  1974年   133篇
  1973年   106篇
  1972年   101篇
  1969年   99篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
181.
Recent theory views adolescent behavior as nested in an ongoing system of family relationships. In keeping with this focus, differences in family functioning of high vs. low identity achievement youth were examined and variables to account for differing identity levels were explored. However, the hypothesized relationship (Circumplex Model) between family type and communication was also examined. Subjects were 411 male students, 18–24 years of age, belonging to intact nuclear middle-class homes, who resided with parents in urban areas. Measures used were the Identity Achievement Scale, Family Adaptability and Cohesion Evaluation Scale, and the Parent-Adolescent Communication Scale. Results supported an association between balanced family type and effective communication (p.001). Significant differences in the family types were found (p.001), with high identity subjects belonging to balanced families, experiencing more openness (p.01) and less problems (p.01) in communicating with parents. Openness with father, mother, and problems with father emerged as significant discriminants. There are important implications for counselling and therapy with youth, placing family at the center of the psychosocial milieu influencing their development.Received Ph.D. from H.P. University. Research interests: adolescent psychosocial development, youth, identity, and family influences.Received M.A.; Ph.D. from Boston University; Panjab University. Research interests: family interiors, women studies, life stress, self image (DAP), sexuality, myths, holistic healing, and tribal women.  相似文献   
182.
183.
184.
In this article we examine how increasing the reimbursement of physicians and expanding Medicaid eligibility affect access to care for children in Cook County, Illinois, which overlies Chicago. Using Medicaid claims and other data at the zip-code level, we compare the places where Medicaid children live with the places where all the physicians who treat children and those who accept Medicaid patients have their practices. Our findings suggest that the recent changes in legislation are unlikely to benefit extremely poor children, who are more likely to live in depressed inner-city areas, where there are few physicians. "Near-poor" children whose homes are dispersed throughout the county, who are now eligible for Medicaid as a result of the recent changes, are likely to see improvements in their access to care. Further changes in policy, aimed at enhancing the capacity of institutions providing care, could improve access for the children of the inner city.  相似文献   
185.
186.
The Iran-Contra affair is an example of the type of event that is expected to give rise to a rally of public opinion behind the president. However, the public's response to this event, uncharacteristically, was a sharp decrease in support for President Reagan. This case study constitutes an attempt to explore the sources of the public opinion response to foreign policy events. Statements of political elites, news coverage and commentary, and public opinion assessments are examined to test the patriotism, priming, and opinion leadership explanations of the rally phenomenon. The actions of opinion leaders appears to provide the best explanation of the differential public response to the Iran-Contra affair.  相似文献   
187.
A study of 82 suicides during 1982-1986 that were committed by jumping from buildings was performed using the case files of the Office of the Medical Examiner of Metropolitan Dade County in Miami, Florida, U.S.A. The analysis involved the age, race, and sex of the victim along with the results of toxicologic studies and the cause of death. Additionally, the decedent's place of residence, location of the suicide, height of the building, and the reason for the suicide were investigated. Whether or not a note was left by the decedent was also ascertained. The suicidal "jumper" most commonly was a white man who was greater than 60 years of age who died from the resultant multiple injuries. The victim commonly was sober and drug free at the time of the incident. In approximately two-thirds of the cases, the location of the suicide was the victim's residence, which frequently was an apartment or condominium-type dwelling that was seven floors or higher from the ground. The victim often had experienced depression prior to the incident and did not usually leave a suicide note. This article compares the Dade County cases with others that have been studied and discusses the reasons why jumping from a building may have been chosen as the suicidal mechanism.  相似文献   
188.
During preliminary examination of the body of a homicide victim, a peculiar red "fiber" was noticed and recovered. Initially believing this to be a carpet fiber, the item was subjected to fiber analysis. It was found to be a short coiled particle not like any known natural or synthetic fabric fiber. Subsequent examinations determined this "fiber" to be the larva of a common freshwater midge (Diptera; Chironomidae). Chironomid larvae have been observed on other bodies recovered from freshwater environments. Entomological studies of this organism have led to the conclusion that the presence of chironomid larvae indicates submersion of the body.  相似文献   
189.
Programme based on mathematical model of the process of dead body temperature changing was developed for estimation of postmortem interval. Automatic retrieval of problem solution was performed on programmable microcalculators of "Electronica MK-61" type using adaptive approach. Diagnostical accuracy in case of dead body being preserved in permanent cooling conditions is +/- 3%.  相似文献   
190.
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