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981.
982.
Abstract Using data from the 1995 National Survey of Family Growth, we examine residential variation in cohabiting women's union outcomes. Prior work has shown that although there are no residential differences in cohabitation, nonmetro women are more likely than others to marry directly and hold more favorable attitudes toward marriage. Building on this work, we examined residential differences in cohabiting women's union outcomes (i.e., marriage, separation, or remaining intact) to test whether nonmetro cohabiting women's unions are more likely to “end” through marriage, and whether pregnancy has a larger positive effect on marriage entry among this group. We find that nonmetro women are less likely to remain in cohabiting unions and are more likely to either marry or separate during the first 24 months of the cohabiting union. Pregnancy during cohabitation encourages marriage and discourages separation, but these effects are not significantly larger for nonmetro women.  相似文献   
983.
This case study explores the metapragmatic awareness of a young, academically successful, African American, female speaker. It describes some of the identities and orientations that the speaker performs through language and the perceived role of linguistic style in such performances. This study suggests that these linguistic performances are a complex negotiation of ethnicity, gender and class that both draw from and resist the macrosocial indexing of social categories. Further, the understood role of language in the social negotiations of the speaker serves as an illustration of the relationship among metapragmatics, ideology and identity and also highlights the dynamism of identity management as individuals position themselves in allegiance with, or opposition to, various groups that populate their social landscape.  相似文献   
984.
This paper employs a cue synthesis experimental method to examine the effects of pitch and intonation on male vocal attractiveness to women. Voices were acoustically manipulated to yield nine combinations of three levels of average fundamental frequency and three levels of variance of fundamental frequency. Strong main effects were obtained for the average fundamental frequency manipulation, with high voices rated as significantly less attractive to women than either medium or low voices, which do not differ in attractiveness. The main effects of manipulations of variance of fundamental frequency on vocal attractiveness and benevolence did not reach significance, but there was a significant interaction on the benevolence factor, with high or low average fundamental frequency manipulations being rated particularly low for voices with low variance of fundamental frequency.  相似文献   
985.
At 13 and 20 months, infants' featural knowledge of self and parent was assessed separately with mother and father. Infants' featural knowledge was measured by a scale that included tasks reflecting infants' knowledge of facial features, spatial location, name, possession and gender. No significant relation between attachment status and featural knowledge was obtained at 13 months when tested with either parent. At 20 months, in contrast, more complex featural knowledge of self and parent was demonstrated by infants who were securely attached than by those who were insecurely attached. Independent of age, however, infants' featural knowledge of their mothers was more complex than that of their fathers, although no differences in self-knowledge were obtained as a function of parent gender. These data are understood in the context of cognitive development and the differences in interactional qualities assessed by attachment status and parent gender.  相似文献   
986.
The negative effects of sleep difficulties have been well documented. However, the prevalence of such problems among US college students has not been well studied. Design difficulties are common in the limited number of existing investigations, making it difficult to estimates the prevalence and types of disturbance studied. The authors describe the use of a quantitative-based assessment instrument to provide an initial indication of students' sleep problems and to serve as a means of addressing some of the deficiencies in the literature. In their sample of 191 undergraduates at a rural southern university, they found that most of the students exhibited some form of sleep disturbance and that women, in general, reported more sleep disturbances than men did. They suggest how colleges and university officials can alter procedures to minimize students' sleep disturbances and reduce the deleterious effects of sleep problems on academic performance.  相似文献   
987.
The Future Challenge for Direct Payments   总被引:5,自引:5,他引:0  
Since 1997, Local Authorities have had the discretionary power to pay cash directly to disabled adults up to the age of 65 and assessed as needing social service support. More recently, the scope of Direct Payments has been widened to include people aged over 65 years and will, under the Health and Social Care Act 2001, be extended to further groups including disabled people from 16 to 18 years of age and parent carers of young children with impairments. Direct Payments have the potential not only to impact radically upon an individual's quality of life but also to influence the 'community care' market economy and the way personal support services are purchased and delivered in the future. Recent figures from a survey undertaken by the Association of Directors of Social Services suggest that 80% of local authorities have already introduced a Direct Payments scheme and that over 3500 people are already in receipt of direct payments (Jones, 2000). This paper is based upon evidence from a user-controlled Best Value Review of Direct Payments (BVDP) in Wiltshire. It explores, from disabled people's perspective, the advantages and disadvantages of Direct Payments, and demonstrates the challenges still facing both service users and service providers.  相似文献   
988.
This paper describes the one‐day introduction to experimental design training course at GlaxoSmithKline. In particular, the use of paper helicopter experiments has been an effective and efficient method for teaching experimental design techniques to scientific and other staff. A good supporting strategy by which the statistics department provides back‐up following the course is essential. Copyright © 2002 John Wiley & Sons, Ltd.  相似文献   
989.
Motivated by examples in spectroscopy, we study variable selection for discrimination in problems with very many predictor variables. Assuming multivariate normal distributions with common variance for the predictor variables within groups, we develop a Bayesian decision theory approach that balances costs for variables against a loss due to classification errors. The approach is computationally intensive, requiring a simulation to approximate the intractable expected loss and a search, using simulated annealing, over a large space of possible subsets of variables. It is illustrated by application to a spectroscopic example with 3 groups, 100 variables, and 71 training cases, where the approach finds subsets of between 5 and 14 variables whose discriminatory power is comparable with that of linear discriminant analysis using principal components derived from the full 100 variables. We study both the evaluation of expected loss and the tuning of the simulated annealing for the example, and conclude that computational effort should be concentrated on the search.  相似文献   
990.
Rex V. Brown 《Risk analysis》2005,25(1):125-140
After two decades of massive investigation, federal approval of a nuclear waste site is drawing to a close. Large-scale research to assure that major hazards such as this one are socially acceptable is often highly inefficient, as here. A regulatory remedy would be to require not only that risk currently assessed be acceptable, but also that risk would remain acceptable given any new information. Research to test compliance with these rules has to be cost effective. Research activities should be managed according to an explicit discipline that can be imposed on powerful conflicting interests. They might be required to (1) set targets for the first- and second-order risk assessments, (2) allocate research resources to close any gap between current and target assessments cost effectively, and (3) reallocate resources, as evolving findings dictate. The interests of license applicant (Department of Energy, DOE) and society are distinguished: the former would want the application approved; the latter would want to reject an unacceptable facility.  相似文献   
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