全文获取类型
收费全文 | 312篇 |
免费 | 26篇 |
专业分类
管理学 | 25篇 |
民族学 | 4篇 |
人口学 | 55篇 |
丛书文集 | 7篇 |
理论方法论 | 48篇 |
综合类 | 2篇 |
社会学 | 178篇 |
统计学 | 19篇 |
出版年
2020年 | 3篇 |
2019年 | 9篇 |
2018年 | 8篇 |
2017年 | 16篇 |
2016年 | 15篇 |
2015年 | 9篇 |
2014年 | 12篇 |
2013年 | 34篇 |
2012年 | 10篇 |
2011年 | 10篇 |
2010年 | 6篇 |
2009年 | 7篇 |
2008年 | 4篇 |
2007年 | 10篇 |
2006年 | 4篇 |
2005年 | 12篇 |
2004年 | 13篇 |
2003年 | 13篇 |
2002年 | 3篇 |
2001年 | 13篇 |
2000年 | 8篇 |
1999年 | 6篇 |
1998年 | 3篇 |
1997年 | 4篇 |
1996年 | 7篇 |
1995年 | 2篇 |
1994年 | 4篇 |
1993年 | 6篇 |
1992年 | 11篇 |
1991年 | 5篇 |
1990年 | 4篇 |
1989年 | 3篇 |
1988年 | 8篇 |
1987年 | 3篇 |
1986年 | 2篇 |
1985年 | 6篇 |
1983年 | 2篇 |
1981年 | 3篇 |
1980年 | 5篇 |
1979年 | 8篇 |
1978年 | 3篇 |
1975年 | 2篇 |
1972年 | 3篇 |
1969年 | 2篇 |
1968年 | 2篇 |
1967年 | 1篇 |
1966年 | 1篇 |
1965年 | 2篇 |
1964年 | 2篇 |
1961年 | 2篇 |
排序方式: 共有338条查询结果,搜索用时 15 毫秒
61.
62.
Jane M. Ussher Janette Perz Duncan Rose Andrew Kellett Gary Dowsett 《Journal of sex research》2013,50(7):854-869
The use of assistive aids in sexual rehabilitation after prostate cancer (PCa) was examined in 124 gay, bisexual, and other men who have sex with men (GBM) and 225 heterosexual men. GBM were significantly more likely to use assistive aids (79% versus 56%), to try multiple assistive aids (M = 1.65 versus M = 0.83) including medication, penile injection, penile implant, vacuum pump, and nonmedical sex aids, and to seek information about sexual rehabilitation on the Internet, through counseling, or in a support group. There were no differences between the groups in satisfaction with the use of assistive aids. However, use of aids was a significant negative predictor of sexual functioning for GBM and a significant positive predictor for heterosexual men. Interview accounts described satisfaction with assistive aids in terms of maintaining erectile functioning and relationships. The majority of men in the study also described hindrances, both physical and social, resulting in discontinuation of assistive aids, including perceived artificiality, loss of sexual spontaneity, side effects, failure to achieve erectile response, cost, and lack of access to information and support. It is concluded that the specific needs and concerns of GBM and heterosexual men regarding sexual rehabilitation after PCa need to be addressed by clinicians. 相似文献
63.
We use nationally representative data to calculate correlations in achievement and delinquency between genetically differentiated siblings within a family, between peers as defined by adolescents' "best friend" nominations, between schoolmates living in the same neighborhood, and between grademates within a school. We find the largest correlations between siblings, especially identical twins. Grademate and neighbor correlations are small. Peer-based correlations are considerably larger than grademate and neighbor correlations but not larger than most sibling correlations. The data suggest that family-based factors are several times more powerful than neighborhood and school contexts in affecting adolescents' achievement and behavior. 相似文献
64.
This paper uses longitudinal data to estimate cohort changes in the earnings trajectories of young adult males. Levels of earnings are uniformly lower for male workers turning 21 between 1980 and 1991 than in 1970-1979, although rates of earnings growth are roughly comparable. Among males turning 21 before 1980, six in 10 (60%) of all men and seven in 10 (71%) college-educated men attained earnings levels by age 30 that were at least twice the poverty level. Corresponding fractions for workers turning 21 between 1980 and 1991 were considerably lower (42% and 56%). Recent cohorts from all demographic subgroups appeared to have more difficulty than older cohorts in attaining middle-class earnings. 相似文献
65.
Focus groups were conducted with 39 Caucasian women (ages 30-55 years) to gain insight regarding their thoughts and feelings toward dairy foods. Women resided in Virginia; all had at least a high school education. Themes characterizing the group discussions were identified. Women knew that dairy foods were a good source of calcium and discussed it in relation to osteoporosis. Although many knew the risk factors related to osteoporosis, most were confused about measures to prevent it. Many used calcium supplements or vitamin/mineral supplements to help meet calcium requirements. Most thought dairy foods were high in fat. Women also discussed the sensory attributes of dairy foods as well as convenience and cost of dairy foods in relation to their dairy food choices. 相似文献
66.
Clampet-Lundquist S Kling JR Edin K Duncan GJ 《AJS; American journal of sociology》2011,116(4):1154-1189
Moving to Opportunity (MTO) offered public housing residents the opportunity to move to low-poverty neighborhoods. Several years later, boys in the experimental group fared no better on measures of risk behavior than their control group counterparts, whereas girls in the experimental group engaged in lower-risk behavior than control group girls. The authors explore these differences by analyzing data from in-depth interviews conducted with 86 teens in Baltimore and Chicago. They find that daily routines, fitting in with neighborhood norms, neighborhood navigation strategies, interactions with peers, friendship making, and distance from father figures may contribute to how girls who moved via MTO benefited more than boys. 相似文献
67.
This study examined alcohol use development from ages 13-20 years. The sample comprised 256 youth (50.4% female; 51.2% White, 48.8% African American) assessed annually for 6 years. A cohort-sequential latent growth model was used to model categorical alcohol use (non-use vs. use). Covariates included gender, race, income, parent marital status, risk taking, spiritual beliefs, parent alcohol use, family alcohol problems, family cohesion, friends' alcohol use, and normative peer use. The alcohol use trajectory increased steadily with age. Risk taking, friends' alcohol use, and normative peer use were positively associated with higher initial rates of alcohol use. Initial parent alcohol use and positive change in parents' and friends' alcohol use over time were related to an increase in alcohol use from ages 13-20 years. 相似文献
68.
This paper examines the consequences of parental migratory strategies for children in three types of Mexican families: those living with their migrant parents in the United States, those living with parents who migrated and returned to Mexico, and those living in Mexico with parents who have never migrated. Using data on 804 children from the Health and Migration Survey (HMS), we found significant differences in children's health across the three types of families. Results also revealed robust effects on child health of the size of immediate and extended social networks and migration experience after controlling for potential mediators such as mother's general health, receipt of social support, and child's age and sex. Findings suggest that social networks and migration affect children in complex ways, offering health benefits to those with migrant parents in U.S. households but not to those living with parents who migrated in the past and returned to Mexico. 相似文献
69.
Thomas DC 《Lifetime data analysis》2007,13(4):565-581
I consider the design of multistage sampling schemes for epidemiologic studies involving latent variable models, with surrogate
measurements of the latent variables on a subset of subjects. Such models arise in various situations: when detailed exposure
measurements are combined with variables that can be used to assign exposures to unmeasured subjects; when biomarkers are
obtained to assess an unobserved pathophysiologic process; or when additional information is to be obtained on confounding
or modifying variables. In such situations, it may be possible to stratify the subsample on data available for all subjects
in the main study, such as outcomes, exposure predictors, or geographic locations. Three circumstances where analytic calculations
of the optimal design are possible are considered: (i) when all variables are binary; (ii) when all are normally distributed;
and (iii) when the latent variable and its measurement are normally distributed, but the outcome is binary. In each of these
cases, it is often possible to considerably improve the cost efficiency of the design by appropriate selection of the sampling
fractions. More complex situations arise when the data are spatially distributed: the spatial correlation can be exploited
to improve exposure assignment for unmeasured locations using available measurements on neighboring locations; some approaches
for informative selection of the measurement sample using location and/or exposure predictor data are considered. 相似文献
70.
Government expansion of child care services is based on the assumption that both parents are employed (the adult worker model) and make cost‐benefit calculations in choosing child care (the rational economic choice model). This paper addresses this assumption, based on research examining mothers' assessments of appropriate child care. These assessments involve complex moral and emotional decisions around their own and their children's needs, and differ between social groups. On this basis, we conclude that the assumptions underlying current child care expansion policy are inadequate, and that the mere expansion of services is not enough. 相似文献