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   464篇
  免费   15篇
管理学   52篇
民族学   5篇
人口学   50篇
丛书文集   3篇
理论方法论   59篇
综合类   5篇
社会学   288篇
统计学   17篇
  2023年   1篇
  2022年   2篇
  2021年   3篇
  2020年   8篇
  2019年   7篇
  2018年   12篇
  2017年   25篇
  2016年   18篇
  2015年   16篇
  2014年   7篇
  2013年   86篇
  2012年   15篇
  2011年   22篇
  2010年   18篇
  2009年   8篇
  2008年   15篇
  2007年   19篇
  2006年   15篇
  2005年   16篇
  2004年   12篇
  2003年   10篇
  2002年   17篇
  2001年   16篇
  2000年   9篇
  1999年   9篇
  1998年   12篇
  1997年   9篇
  1996年   6篇
  1995年   2篇
  1994年   6篇
  1993年   4篇
  1992年   5篇
  1991年   6篇
  1990年   1篇
  1988年   6篇
  1987年   5篇
  1986年   6篇
  1985年   6篇
  1984年   5篇
  1983年   4篇
  1980年   4篇
  1979年   2篇
  1978年   1篇
  1977年   2篇
  1971年   1篇
排序方式: 共有479条查询结果,搜索用时 15 毫秒
111.
Research has established that exposure to a combination of diagnostic (i.e., relevant) and nondiagnostic (i.e., irrelevant) information results in predictions that are more regressive than predictions based on diagnostic information (Hackenbrack, 1992; Hoffman and Patton, 1997). This phenomenon has been labeled the dilution effect (e.g., Tetlock and Boettger, 1989) and has been documented when individuals make predictions. This study tests for the dilution effect when small groups make predictions, and examines the effect of using a procedure designed to reduce the dilution effect. Results indicate that group predictions are influenced by nondiagnostic information in the same manner as are individual predictions, and allowing participants to rate the diagnosticity of information prior to making predictions does not reduce the dilution effect.  相似文献   
112.
Investigations of peer collaboration often vary task or social aspects of collaborative contexts and assume that these aspects of the context are experienced similarly by individuals. The present study examined how social aspects (group friendship and gender) of a peer collaborative context related to differences in adolescents' interpretations of task and social problems that occurred while collaborating with peers in a naturalistic classroom setting. Eighth-grade adolescents ( N = 82, 44 females) worked with peers on a six-week Spanish project at school. Adolescents chose to work primarily with same-gender peers and friends. Task and social interpretations of problems were assessed twice. The salience of task problems decreased over time; social problems became somewhat more salient. Social problems were less salient to females than to males. Greater group friendship was associated with the lesser salience of task problems early in the project. The salience of social problems, gender, and friendship were important for understanding performance on the project. The value of considering the context of peer collaborative problem solving from individuals' perspectives is discussed.  相似文献   
113.
The T25 single-point estimate method of evaluating the carcinogenic potency of a chemical, which is currently used by the European Union (EU) and is denoted the EU approach, is based on the selection of a single dose in a chronic bioassay with an incidence rate that is significantly higher than the background rate. The T25 is determined from that single point by a linear extrapolation or interpolation to the chronic dose (in mg/kg/day), at which a 25% increase in the incidence of the specified tumor type is expected, corrected for the background rate. Another method used to obtain a carcinogenic potency value based on a 25% increase in incidence above the background rate is the estimation of a T25 derived from a benchmark dose (BMD) response model fit to the chronic bioassay data for the specified tumor type. A comparison was made between these two methods using 276 chronic bioassays conducted by the National Toxicology Program. In each of the 2-year bioassays, a tumor type was selected based on statistical and biological significance, and both EU T25 and BMD T25 estimates were determined for that end point. In addition, simulations were done using underlying cumulative probability distributions to examine the effect of dose spacing, the number of animals per dose group, the possibility of a dose threshold, and variation in the background incidence rates on the EU T25 and BMD estimates. The simulations showed that in the majority of cases the EU T25 method underestimated the true T25 dose and overestimated the carcinogenic potency. The BMD estimate is generally less biased and has less variation about the true T25 value than the EU estimate.  相似文献   
114.
While the populations of the Central Asian successor states are extremely heterogeneous on many indicators, the issue of rural or urban residence is consistently important in terms of differentials in population growth, socio-economic status and public health. In this paper I focus on rural population trends in Kazakhstan, Kyrghyzstan, Turkmenistan, Uzbekistan and Tajikistan. I explore the relatively disadvantaged position of rural inhabitants as well as regional variations within the rural population. The differentials in fertility and mortality rates and the large projected population increases indicate that future policy interventions and data collection efforts should incorporate a specific focus on rural areas.  相似文献   
115.
Leaving school prematurely is often claimed to be among the most negative consequences of early marriage and pregnancy for girls in less developed countries. However, an analysis of the relative frequency with which these events actually occur or are named as reasons for leaving school reveals that, at least in the case of francophone Africa, they explain no more than 20 per cent of dropouts. To the extent that demographic events trump school or family factors as determinants of school-leaving, our data indicate that it is union formation--defined by the DHS as first marriage or cohabitation--rather than childbirth that is more likely to have this effect. 'Schoolgirl pregnancy' typically accounts for only between 5 and 10 per cent of girls' departures from school. Furthermore, the risks of leaving school because of pregnancy or marriage have declined over time with the decline in rates of early marriage and childbearing.  相似文献   
116.
117.
This paper presents the authors' use of solution-focused brief therpay in an adult inpatient psychiatric hospital setting. we suggest that a theoretical inteeegration of the medical model and the solution-focused approach provides a useful treatment modality. We discuss implementation of the model, emphasizing assessment, treatment milieu, the role of staff, therapy, and discharge issues. We also describe the model's usefulness for training and supervision and offer recommendations for future research.  相似文献   
118.
There are substantial numbers of high school dropouts among middle class, high achieving and majority youth. Yet, little research has been undertaken to identify the psychosocial and family characteristics, educational needs, and program requirements of middle class dropout youth. This paper reports the educational history, individual psychosocial characteristics and family backgrounds of 102 middle class dropout youth who participated in an educational treatment program within a university. Data from a questionnaire and a family assessment instrument indicate that middle class dropout youth have a variety of family, social, emotional and learning disorders. Implications for clinical interventions are presented along with a case history and treatment plan of one of the youth in the study.  相似文献   
119.
ABSTRACT

Empathy is identified as a protective factor that has been helpful for children considered at high risk for poor mental health and social functioning due to experiencing stressful circumstances such as family violence, substance abuse of a parent, or poverty. Yet, little is known about its relevance to a family's ability to overcome adversity. This study examined the narratives of 20 resilient families who maintained family functioning despite experiencing a multitude of risk factors including poverty, death of a child, significant health problems, or substance abuse problems. Narrative analysis was used to identify the ways families situated empathic actions within their stories of resilience. Findings suggest families developed increased compassion for others as a result of their own experiences with loss, trauma, or stress and discussed how helping others increased their ability to cope with the challenges they faced. Future research and practice implications are outlined and support the usefulness of strengths-based concepts and interventions.  相似文献   
120.
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