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   351篇
  免费   30篇
各国政治   9篇
工人农民   37篇
世界政治   70篇
外交国际关系   18篇
法律   183篇
中国政治   4篇
政治理论   58篇
综合类   2篇
  2023年   7篇
  2022年   3篇
  2021年   6篇
  2020年   12篇
  2019年   19篇
  2018年   21篇
  2017年   20篇
  2016年   26篇
  2015年   15篇
  2014年   16篇
  2013年   42篇
  2012年   18篇
  2011年   14篇
  2010年   9篇
  2009年   8篇
  2008年   15篇
  2007年   12篇
  2006年   11篇
  2005年   25篇
  2004年   17篇
  2003年   22篇
  2002年   16篇
  2001年   6篇
  2000年   1篇
  1998年   4篇
  1997年   1篇
  1993年   5篇
  1992年   3篇
  1991年   2篇
  1990年   1篇
  1989年   2篇
  1987年   1篇
  1984年   1篇
排序方式: 共有381条查询结果,搜索用时 15 毫秒
311.
Parents compare their children to one another; those comparisons may have implications for the way mothers and fathers treat their children, as well as their children’s behavior. Data were collected annually for three years with parents, firstborns, and secondborns from 385 families (Time 1 age: firstborns, 15.71, SD?=?1.07, 52% female; secondborns, 13.18, SD?=?1.29, 50% female). Parents’ beliefs that one child was better behaved predicted differences in siblings’ reports of parent-child conflict. Additionally, for siblings close in age, mothers’ comparisons at Time 1 predicted youth’s problem behavior at Time 3 through siblings’ differential conflict with mothers. The results support and extend tenets from Social Comparison and Expectancy Value theories in regards to social comparison within families.  相似文献   
312.
Due to the lack of family drug treatment courts, families are often torn apart when a parent has a substance abuse problem. Children of substance abusers are often abused and neglected. However, children in these tough living situations fear seeking help because they do not want to be the reason that their family is torn apart and they are placed in the foster care system. This Note proposes a federal statute that requires all states to implement family drug treatment courts. These courts allow families to stay intact while providing the parent with the help that he or she needs.  相似文献   
313.
Liverpool Law Review - This article examines the ethical thinking of Levinas, from which Derrida’s Law of Hospitality is derived, to see if it is sustainable in the face of Badiou’s...  相似文献   
314.
Political Behavior - Social media has increasingly enabled “fake news” to circulate widely, most notably during the 2016 U.S. presidential campaign. These intentionally false...  相似文献   
315.
Runaway and homeless youth often have a constellation of background behavioral, emotional, and familial problems that contribute to stress and maladaptive behaviors, which, in turn, can lead to self-harming and suicidal behaviors. The current study examined the roles of stress and maladaptive behaviors as mediators between demographic and psychosocial background characteristics and self-injurious outcomes through the lens of the stress process paradigm. The model was tested in a sample of runaway and homeless youth from Los Angeles County (N = 474, age 12–24, 41 % female, 17 % White, 32.5 % African American, 21.5 % Hispanic/Latino). Background variables (gender, age, sexual minority status, parental drug use history, and emotional distress) predicted hypothesized mediators of maladaptive behaviors and recent stress. In turn, it was hypothesized that the mediators would predict self-harming behaviors and suicide attempts in the last 3 months. Females and LGBT (lesbian, gay, bisexual, transgender) youth were more likely to have self-harmed and attempted suicide; younger participants reported more self-harming. The mediating constructs were associated more highly with self-harming than suicide attempts bivariately, although differences were modest. Maladaptive behaviors and recent stress were significant predictors of self-harm, whereas only recent stress was a significant predictor of suicide attempts. All background factors were significant predictors of recent stress. Older age, a history of parental drug use, and greater emotional distress predicted problem drug use. Males, younger participants, and participants with emotional distress reported more delinquent behaviors. Significant indirect effects on self-harming behaviors were mediated through stress and maladaptive behaviors. The hypothesized paradigm was useful in explaining the associations among background factors and self-injurious outcomes and the influence of mediating factors on these associations.  相似文献   
316.
Protective and risk factors associated with rates of early sexual debut and risky sexual behaviors for a sample of low-income adolescent boys were examined using bioecological theory framed by a resiliency perspective. Protective processes examined include a close mother–son and father–son relationship, parental monitoring and family routines, as well as the adolescent boy’s academic achievement, expectations, and school recognition. The risk factors assessed were delinquent behaviors, if the adolescent was born to a teenage mother, family structure, monthly family income, risky neighborhood environments, family of origin welfare receipt, and maternal education. Waves one (1999) and two (2001) of Welfare, Children, and Families: A Three-City Study were used (N = 528; Wave 1 ages 10–14 years). Associations between early sexual debut and risky sexual behaviors with individual, family, school, and neighborhood protective and risk factors were addressed through a series of d-probit and Ordinary Least Squares multiple regression techniques. When protective and risk factors were addressed independently, academic achievement and parental monitoring protected adolescent boys from early sexual debut and risky sexual behaviors while drug and alcohol use and school problems placed them at risk for these behaviors. However, when the model is assessed together, early parental monitoring and academic achievement were shown to protect boys’ early sexual debut and risky sexual behaviors by reducing their delinquent behaviors, specifically early drug and alcohol use and school problems.
Brenda J. LohmanEmail:
  相似文献   
317.
Using a sample of 7,881 African American (915 males and 1,073 females) and White (2,864 males and 3,029 females) adolescents from Waves 1 and 3 of the National Longitudinal Study of Adolescent Health, this study examined the psychosocial consequences that obese adolescents encounter as they reach young adulthood. Results indicate that obesity among adolescent females is associated with a lower status attainment in young adulthood than normal weight adolescent females. In addition, obese adolescent females have more depressive symptoms in young adulthood than normal weight females, even after controlling for prior depressive symptoms in adolescence. Obesity status among adolescent males is not associated with poorer psychosocial outcomes in young adulthood. We did not find evidence of an interaction between obesity status and race, indicating no significant differences in psychosocial outcomes for obese White compared to obese African American adolescents.
Michael J. MertenEmail:
  相似文献   
318.
This is the first report regarding the characterization of the new synthetic cannabinoid 4F‐MDMB‐BINACA. 4F‐MDMB‐BINACA was first analytically confirmed in seized drug material using gas chromatography–mass spectrometry (GC‐MS), liquid chromatography–quadrupole time‐of‐flight mass spectrometry (LC‐QTOF), and nuclear magnetic resonance (NMR) spectroscopy. Subsequent to this characterization, 4F‐MDMB‐BINACA was detected in biological specimens collected as part of forensically relevant casework, including medicolegal death investigations and drug impaired driving investigations, from a variety of regions in the United States. Further analysis of biological specimens resulted in the identification of the metabolites 4F‐MDMB‐BINACA 3,3‐dimethylbutanoic acid and 4‐OH‐MDMB‐BINACA. 4F‐MDMB‐BINACA is appearing with increasing frequency as a contributory factor in deaths, creating morbidity and mortality risks for drug users. Laboratories must be aware of its presence and impact, incorporating 4F‐MDMB‐BINACA into workflows for detection and confirmation.  相似文献   
319.
320.
When an executive departs, some organizations experience a vacancy while others do not. Recent research shows that the occurrence and length of vacancy instances within and across sectors varies widely. However, the causes of such variance in vacancies have yet to be carefully addressed by public management research. This study explores the determinants of executive vacancy, focusing specifically on organizational-level characteristics of size, performance, and sector as well as the role of anticipation of a departure. We use data from public and private US doctoral universities to identify 230 leadership transitions between 1993 and 2013. In this context, we find that anticipation of departure is an extremely strong predictor of vacancy. Moreover, private universities are significantly less likely than their public counterparts to experience executive vacancy while organizational performance and size do not appear to influence vacancy.  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