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411.
412.
Keith Knight 《Revue canadienne de statistique》1999,27(3):497-507
We consider the asymptotic behaviour of L1 -estimators in a linear regression under a very general form of heteroscedasticity. The limiting distributions of the estimators are derived under standard conditions on the design. We also consider the asymptotic behaviour of the bootstrap in the heteroscedastic model and show that it is consistent to first order only if the limiting distribution is normal. 相似文献
413.
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415.
The 'underclass' is widely held by commentators of the Right to be responsible for a host of social problems, including violent crime. This paper shows how in the reporting of sexually motivated murder in a sample of nine British newspapers for one complete year (1992), the image constructed is one where unemployed and other marginalised men are portrayed as the main perpetrators of sexual violence. This, the authors argue, hampers our understanding of sexual violence, for it suggests that it is only men of a 'low' socio-economic background who are a potential threat to women and children. It is also suggested that the 'symbolic environment' of the press reporting of sexual murder provides a context in which a more authoritarian benefit regime and greater control of poor communities can be spuriously justified. 相似文献
416.
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This paper tests the theory of cumulative advantage and disadvantage as it applies to the productivity and prestige of academic
departments within sociology. The theory suggests that past perceptions of departmental prestige and cumulative records of
faculty productivity are of greater significance than more recent levels of productivity in determining their perceived level
of eminence within the discipline; a phenomenon due to the accumulation of past performance and recognition over time. The
paper employs two widely disseminated measures of departmental eminence: the 1966 Cartter Report rankings and the 1982 Conference
Boards assessments. Measures of departmental productivity are derived from cumulative publication histories of departments
between 1936 and 1989 in three preeminent sociological journals; namely, theAmerican Sociological Review, American Journal of Sociology, andSocial Forces. The paper finds that while past accomplishments do not bear importantly on current perceptions of departmental prestige
after controlling for the level of productivity maintained during the preceding decade, prior perceptions of prestige are
strongly associated with current rankings. In addition, past perceptions of academic prestige are found to be highly stable,
thereby creating the potential for a stratification hierarchy that allows for little mobility over time. 相似文献
418.
419.
The economic model of the household has been used extensively to examine questions relating to work within the household.
This essay takes a critical look at this model and these household work applications. It concludes that the model provides
several useful insights regarding factors that have influenced the decline in women's household work time during this century
and the changes in the overall economic value of household work. In other areas (e.g., parental child care), the model has
rarely been used although it has the potential to provide useful insights. Finally, in certain applications, such as investigations
of the gender-related specialization of function within the household, the model relies on unrealistic assumptions that need
to be modified if it is to prove useful.
His research interests include the consumption, investiment, and time-use behavior of families and family members.
Her research interests include family time allocation, household structure and economic well-being, and consumer policy. 相似文献
420.