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   1104篇
  免费   27篇
各国政治   48篇
工人农民   46篇
世界政治   60篇
外交国际关系   25篇
法律   817篇
中国政治   21篇
政治理论   107篇
综合类   7篇
  2023年   6篇
  2022年   6篇
  2021年   9篇
  2020年   18篇
  2019年   25篇
  2018年   24篇
  2017年   25篇
  2016年   33篇
  2015年   18篇
  2014年   17篇
  2013年   76篇
  2012年   32篇
  2011年   30篇
  2010年   24篇
  2009年   19篇
  2008年   32篇
  2007年   18篇
  2006年   20篇
  2005年   28篇
  2004年   42篇
  2003年   40篇
  2002年   26篇
  2001年   101篇
  2000年   67篇
  1999年   73篇
  1998年   35篇
  1997年   4篇
  1996年   3篇
  1995年   8篇
  1994年   4篇
  1993年   7篇
  1992年   21篇
  1991年   18篇
  1990年   39篇
  1989年   26篇
  1988年   29篇
  1987年   23篇
  1986年   14篇
  1985年   13篇
  1984年   8篇
  1983年   8篇
  1982年   11篇
  1981年   8篇
  1980年   4篇
  1979年   11篇
  1978年   7篇
  1973年   2篇
  1971年   4篇
  1970年   3篇
  1968年   2篇
排序方式: 共有1131条查询结果,搜索用时 15 毫秒
341.
Journal of Youth and Adolescence - Although Chinese parents are seen as employing guilt and shame induction to socialize children’s culturally appropriate behavior, research has focused...  相似文献   
342.

The contribution that parental educational expectations for youth and youth’s perceptions of academic competence can have on youth’s own educational expectations across early to late adolescence is not well-understood. In a sample of Mexican-origin families, the current study examined longitudinal (from early to late adolescence) associations among mothers, fathers, and youth’s educational expectations, how youth’s educational expectations were associated with perceived academic competence, and the potential mediating role of youth’s perceived academic competence. Data from two-parent families which included one focal child (7th grade: N=?469; youth: Mage?=?12.31, 50% female) at three waves (7th, 9th, and 11th grade) were utilized. Structural equation modeling and multi-group analysis were implemented to assess the study’s goals. Results revealed significant associations among parents’ 7th grade educational expectations and youth’s 9th and 11th grade educational expectations. The findings also revealed three significant associations among youth’s perceived academic competence and educational expectations between 7th and 11th grade. Specifically, youth’s 7th grade perceived academic competence predicted youth’s 9th grade educational expectations, youth’s 7th grade educational expectations predicted youth’s 9th grade perceived academic competence, and youth’s 9th grade perceived academic competence predicted youth’s 11th grade educational expectations. Multigroup analysis did not reveal gender differences for the associations tested. The findings highlight the long-term significance of parents’ educational expectations on youth’s educational expectations and underscore youth’s academic competence, an individual level factor, as critical to consider for understanding educational expectations across adolescence for Mexican-origin youth.

  相似文献   
343.
The U.S. incarceration rate rose dramatically over the past 45 years, increasing the number of marriages and cohabiting unions disrupted by a jail or prison stay. But as some have pointed out, not all unions dissolve as a result of incarceration, and there seems to be racial–ethnic variation in this tendency, with Blacks displaying higher rates of dissolution than Whites and Hispanics. Yet it is unclear what explains racial–ethnic differences in union dissolution among the incarcerated. Drawing on the National Longitudinal Survey of Youth 1997 (NLSY97), we examine why racial–ethnic differences in union dissolution exist among a sample of individuals who had a marital or a cohabiting union interrupted by an incarceration spell. In doing so, we draw on social exchange theory and structural and cultural theories to suggest that racial–ethnic disparities in union dissolution are explained by differential exposure to protective relationship characteristics. The results of Cox hazard models reveal that Blacks have significantly higher hazards of union dissolution than do Whites and Hispanics. These results also indicate that being married, having a child together, having full-time employment, a longer union duration, and a shorter incarceration spell may protect against dissolution and that these factors account, in part, for the greater risk of dissolution among Blacks relative to Whites and Hispanics.  相似文献   
344.
This paper engages with the theoretical perspective of policy entrepreneurship to examine the pattern and process of policy change in the context of China's urban redevelopment. Drawing upon a strategic-relational reinterpretation of policy entrepreneurship, this paper identifies a distinctive form of reluctant policy innovation in the “three old renewals” scheme initiated in Guangzhou where profit concession and informality tolerance were practiced to create a small window of opportunity for the project of urban redevelopment to break ground. The motivation of policy entrepreneurship in the successful urban renewal projects in Guangzhou was heavily contingent upon the geographically important location of the project site and the historically incidence of hosting the 2010 Asian Games, which forced municipal government to become entrepreneurial and innovative in decision making and income redistribution in order to get things done as quickly as possible. The distinct fashion of policy innovation identified in the case of Guangzhou points to the polymorphous and dynamic nature of policy entrepreneurship and advocates a relational treatment of the strategies and motives of policy entrepreneurs embedded in concrete geographical and historical context.  相似文献   
345.
The goal of the study was to examine whether social motives (social mimicry, mutual attraction, and unreciprocated attraction) predict changes in antisocial behavior across middle school grades. The 2,003 initial participants (55% girls) were drawn from a larger longitudinal study of urban public school students: 44% Latino, 26% African-American, 10% Asian, 9% Caucasian, and 11% multiracial. Analyses of peer nominations and teacher-rated behavior included five waves of data between the fall of sixth grade and the spring of eighth grade (n = 1,260–1,347 for longitudinal analyses). Supporting the social mimicry hypothesis, students who associated peer-directed aggression with high social status in the beginning of middle school engaged in elevated levels of antisocial conduct during the second year in the new school. Additionally, unreciprocated attraction toward peers who bully others in the beginning of middle school was related to increased antisocial behavior in the last year of middle school. No support was obtained for the mutual attraction hypothesis. The findings provide insights about possible social motives underlying susceptibility to negative peer influence.
Alice Y. HoEmail:
  相似文献   
346.
中国的崛起对美国和东盟均产生重大影响,导致中、美和东盟在经贸、政治和认知方面形成了互动关系。由于经济领域的区域经济一体化、贸易转移效应和政治领域东亚一体化的排斥效应等因素,中美在东亚的权力关系发生了转移,东亚秩序经历了结构性调整。三方在经贸、政治和认知的互动相互影响并呈正相关关系,使得东亚的权力转移在和平中实现。互动中仍存在一些问题需要三方调适和合作加以解决。  相似文献   
347.
The goal of the study was to examine psychopathology and stressors suffered by suicide victims, and to describe the characteristics of the suicides in the Texas Department of Criminal Justice between June of 1996 to June of 1997. Data on 25 completed suicides were collected from the records department. Results: The authors identified 60% of the suicide victims with a history of psychiatric disorders. Seventy-six percent had been diagnosed with psychiatric disorders while incarcerated. The most frequent psychiatric disorders were mood disorders (64%), psychotic disorders (44%), personality disorders (56%), and comorbidity with a history of presentencing alcohol and drug abuse was common. Most of the victims experienced chronic and/or acute stressors of acute trauma, disrupted relationship, sentence hearing, and/or medical condition. We concluded that important factors associated with increased risk of prison suicide include psychiatric disorders, comorbid substance abuse, a history of suicide attempt, and chronic and/or acute stressors.  相似文献   
348.
Time-and cost-saving methods for paternity testing are described. Seventeen genetic systems were divided into six groups: (1) transferrin (Tf), factor B (Bf), and phosphoglucomutase 1 (PGM1); (2) group-specific component (Gc) or alpha 1-antitrypsin (PI) and alpha 2HS-glycoprotein (HSGA); (3) complement components C6 and C7, factor 13B (F13B), and plasminogen (PLG); (4) haptoglobin (Hp), C8 alpha-gamma chain (C81), and factor I (IF); (5) red cell acid phosphatase (ACP), esterase D (ESD), and glutamic-pyruvic transaminase (GPT); and (6) 6-phosphogluconate dehydrogenase (PGD) and glyoxalase I (GLO). Each group of systems was typed simultaneously by electrophoresis or isoelectric focusing (IEF) followed by staining or immunoblotting. These methods are very practical because they afford a considerable saving of time, work and expense, and facilitate semipermanent preservation of electrophoretic patterns.  相似文献   
349.
The present study was made on an experimental animal model of a death from anaphylaxis, in which postmortem changes in levels of histamine and 1-methylhistamine, in whole blood were measured. Instead of the usual immunological method administering compound 48/80, a degranulating agent of mast cell and the effect closely resembling the immuno-reaction, resulted in reliable death in a short time. The animals that died rapidly after the injection of compound 48/80, were found to have large increases in levels of histamine and 1-methylhistamine soon after the administration. These results were similar to the results of injecting histamine exogenously. On the other hand, the animals that died after a longer time showed no increases in levels of those amines within about 24 h, but 24 hours after death histamine levels were only increased tremendously without rise in 1-MHA levels. These phenomena closely resembled those in the control animals that were treated with overdoses of Nembutal.  相似文献   
350.
A simple method for purification of anti-A and anti-B antibodies using glutaraldehyde-fixed human erythrocytes is described. Specific antibodies were first absorbed with the corresponding cells, then eluted by heating at 53 degrees-55 degrees C for 15 min. The method is simple and highly efficient with a fair recovery of 15.6%-34.4%.  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