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This paper addresses the processes underlying the dramatic shift in beliefs about women's work and family roles in the United States over the past two decades. Following Mason and Lu (1988) , we posited this shift to be a function of actual change in individual opinions, as well as changes in population membership that result from births and deaths. Using pooled cross‐sections from the General Social Surveys (1977 to 1996), we found that although demographic processes and microlevel attitude change are both important in understanding attitude trends, the contribution of cohort succession is substantially greater now than in the period that Mason and Lu examined. Multivariate analyses show that (a) the sex difference in attitudes is greater among recent cohorts, and (b) the strong association between education and attitudes that characterized earlier cohorts is significantly weaker among cohorts born after 1945.  相似文献   
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Using a sample of middle and high school students who had been identified by school personnel as at risk of school failure, this investigation examines two competing models about the effects of students' perceptions of danger at school and teacher support on their sense of school coherence. From the compensatory model, it is assumed that risk and protective factors combine additively to influence outcomes. From the immunity model, it is assumed that protective factors buffer or moderate the negative effects of risk factors on outcomes. Support is found for the compensatory or additive model, with perceptions of school danger negatively influencing students' sense of school coherence and teacher support positively influencing variation in the criterion variable. Implications for theory, practice, and further research are discussed.  相似文献   
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Scant empirical research has been conducted on the relationship between threats and violence. The purpose of this analysis is to assess the link between verbal threats of violence and actual physical violence against former intimate victims of stalking. The researcher interviewed 187 female former intimate stalking victims, asking respondents about various characteristics of their experiences. Responses to questions pertaining to threats; history of violence; stalkers' drug and alcohol use; frequency of phone calls, "following," and letters during stalking; and victims' age and education were analyzed as possible predictors of three violence-related dependent variables: (a) whether or not violence occurred, (b) the number of violent incidents during stalking, and (c) physical injury during stalking. The results of linear and logistic regression models reveal that, regardless of the measure of violence, there is an independent, moderate, and statistically significant correlation between verbal threats and subsequent violence. Regression coefficients for drug abuse and alcohol abuse were also statistically significant, but only in predicting physical injury during stalking.  相似文献   
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One of the most effective ways to describe the successional gradient of an environment is by using measures of biodiversity. We investigated the biodiversity of ant communities (known tramp/structure invaders) in an environment undergoing urban succession to characterize how ant communities changed along a disturbance gradient. Ant community dynamics were examined within three Puerto Rican housing developments of different ages. Within each development, we assessed the ant community using biodiversity measures of richness, abundance, diversity and evenness. We also studied changes in biodiversity within each development over time as well as how biodiversity related to food preferences within the ant communities. In general, the biodiversity measures increased as the age of the housing development increased. Monthly changes in biodiversity indicated that month was a better predictor of biodiversity in the most recently disturbed development, while the biodiversity in the older developments was less predictable from month to month. The biodiversity measures also suggested that the ant community in the youngest development was comprised mostly of generalist feeders. However, the older sites’ ant species appeared to have more specific feeding preferences. Based on the biodiversity measures of these ant communities, our findings suggest that the housing developments of different ages represented advancing stages of secondary succession. Furthermore, this study indicated that the succession of ant species occurs rapidly (<10 years) in urban environments, resulting in a relatively diverse ant community.  相似文献   
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This paper examines a case study of a severely physically disabled man, Ralph, in terms of his interaction with his carers. He communicates using various systems of augmentative and alternative communication (AAC, such as symbol boards and high-tech devices), the vocabulary for which has mostly been selected for him by others. The starting point of the paper is the assumption that disabled people have traditionally held a disempowered position in society (relative to non-disabled people), and the question asked is to what extent is Ralph further disempowered by the limited vocabulary available to him in his AAC systems, and in the way others interact with him. The paper draws on the work of Bourdieu, according to whom ‘Language is not only an instrument of communication or even of knowledge, but also an instrument of power’ (1977, 648). I consider the tensions between the drive towards the empowerment of disabled individuals, as exemplified by the provision of AAC, and opposition to allowing access to certain types of vocabulary (especially expletives such as ‘the F word’), unless it is expressed in ‘the nicest possible way’.  相似文献   
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This paper provides an in-depth examination of the joint effects of race/ethnicity and immigrant status on adolescents’ intercourse risk. We employ a sample of 4,535 females and 3,759 males from the National Education Longitudinal Study (NELS 88/94) who were followed for 6 years beginning in the eighth grade. We use discrete-time logistic regression models to estimate the associations of race/ethnicity and immigrant generational status with first intercourse hazard, and to evaluate the statistical interactions between race/ethnicity and immigrant status. Overall, Asian and Hispanic girls had lower and non-Hispanic Black girls had higher estimated risks relative to non-Hispanic White girls. Hispanic boys and White non-Hispanic boys had similar intercourse risks, but Black boys had higher and Asian boys lower relative risks. However, these patterns are contingent on immigrant status. Among girls, the protective effects of Asian or Hispanic identity are found only among second generation youth. Risk profiles for boys are more complex: being a third-plus generation Hispanic is associated with a higher risk while an Asian identity is associated with a lower risk only among first- and second-generation youth. These findings confirm the importance of accounting for the overlap between race/ethnicity and immigrant status in models of adolescent behavior. As the demographic diversity of the US population grows, researchers must include both race/ethnicity and immigrant status in their models of adolescent behavior.  相似文献   
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In this article we advance scholarship on consumer racial profiling (CRP), in general, and the practice as it occurs in restaurant establishments, in particular, by presenting findings from a survey of restaurant consumers that was designed to ascertain the degree to which discriminate service is evident in black and white customers' perceptions and evaluations of their servers' behaviors. We found no evidence of interracial differences in subjects' perceptions of being the recipients of subtle server behaviors that are discretionally conveyed (e.g., recommend entrée, compliment food choice, joke with, etc.) or those that constitute standard markers of service quality (e.g., eye contact, smiling, expressing appreciation, etc.). We did, however, find some evidence of CRP in customers' perceptions of their servers' attentiveness/promptness. Additionally, we found that African Americans tend to subjectively appraise their servers' performance less favorably than their white counterparts and this is the case even when other indicators of service discrimination are held constant. Findings taken as a whole suggest that servers' extend similar cues of hospitality but do so in qualitatively different ways (e.g., less sincere) across racial groups. We discuss the implications of these findings and conclude by encouraging additional scholarship on the subtle nature of racial discrimination in consumer settings.  相似文献   
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