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361.
Historically, the coverage bias from excluding the United Statescell-only population from survey samples has been minimal dueto the relatively small size of this group. However, the unrelentinggrowth of this segment has sparked growing concern that telephonesurveys of the general public in the United States will becomeincreasingly subject to coverage bias. While there is evidencethat demographic weighting can be used to eliminate this bias,the availability of the weights lag behind the rapidly changingcell-only population. To explain the extent of the problem,we propose a reliable model to forecast cell-only populationsize and demographics. This model posits that a stable behavioralprocess, the rate of habit retention, can be estimated fromprior wireless lifestyle adoption in the United States and mayalso describe adoption of the cell-only lifestyle. Using measuresof incentive and habituation, we test this assumption by predictingchanges in the cell-only population size and changes in agedemographics. The accuracy of predictions confirms the two adoptionbehaviors are similar. We then develop forecasts of age demographicsthrough 2009, and show how cell-only lifestyle adoption leadsto potential coverage bias that is better addressed throughthis type of modeling rather than weighting from historicaldata. 相似文献
362.
Don A. Dillman Virginia Lesser Robert Mason John Carlson Fern Willits Rob Robertson Bryan Burke 《Rural sociology》2007,72(4):632-646
Abstract The effect of personalization on mail survey response rates was examined in nine studies that included 17 comparisons under several research conditions. A study of this variable across multiple experiments in five agricultural experiment stations was undertaken because of conflicting results from previous research and from concern that the effectiveness of personalization might have decreased over time. Results show that, while response to general public surveys appeared to increase modestly across all treatment groups, there was no positive effect for populations in which a group identity (e.g., Dear Oregon Gardner or Dear ATV Owner) is employed to address respondents in cover letters. Personalization appears to remain useful for improving response in surveys of the general public. 相似文献
363.
John D. Skrentny Stephanie Chan Jon Fox Denis Kim 《The International migration review》2007,41(4):793-825
We argue that regional comparison of East Asian and European ethnic return migration policy offers important new perspectives on nationhood, nondiscrimination norms, and trans‐nationality. We find that despite international nondiscrimination norms, preferential ethnic return policy is common in both regions. These policies at least implicitly define the nation as existing across borders. However, there are significant regional differences. East Asian states use co‐ethnic preferences instrumentally for economic goals and also offer preferential treatment of co‐ethnic foreign investors. European states offer preferences to coethnics to protect these populations or express symbolic ties, sometimes at great expense. Thus, in Europe the state has an obligation to assist coethnics abroad, but in Asia, foreign coethnics assist the state. 相似文献
364.
365.
For discrete distributions, the standard method of producing a two‐sided confidence interval generates an interval that is exact but conservative. This paper proposes a new algorithm to produce a short exact geometric confidence interval with proven properties, and compares the new interval with the standard interval. 相似文献
366.
367.
John M. Bolland 《Social Networks》1985,7(2):153-172
A number of recent studies have addressed the informal social structure surrounding urban decision making, showing its implications for collective political action. This paper extends these analyses by asking a prior question: what factors affect the structure of political networks? Specifically, the paper develops a model suggesting how one such factor, perceptions of political leadership and the expectations of political conflict they may engender, affect the structure of urban agenda-setting networks. Data collected from six cities show perceptions of leadership stability to be strongly correlated with four structural characteristics of these networks. 相似文献
368.
In extending Durkheimian thought on the relationship between deviance and social order, Erikson (1966) advanced the constancy of crime hypothesis, maintaining that the volume of deviant behavior remains stable over time. Erikson's data for Essex County do show remarkable stability for the years 1651–1680 in the reported offender rate. However, Essex County represents a very limited test of the hypothesis. We present comparative historical data for the entirety of Plymouth Colony, 1633–1679, finding that change—not constancy—best characterizes the evidence. The lack of unequivocal support for the hypothesis suggests a need for its rethinking. Several such possibilities are briefly discussed.We wish to thank our colleagues David L. Smith, Charles J. Dudley, Michael Hughes, Richard Schuster, Alan C. Acock (Sociology), A. Roger Ekirch (Department of History) and the anonymous reviewers ofQualitative Sociology for their helpful suggestions on a prior version of this paper. The research was made possible by a small project grant from VPI & SU, and we gratefully acknowledge the assistance of Catherine L. Hammond in completing the investigation. 相似文献
369.
Governmental organizations play a major role in disaster relief operations. Supply chains set up to respond to disasters differ dramatically in many dimensions that affect the cost of relief efforts. One factor that has been described recently is self‐sustainment, which occurs when supplies consumed by intermediate stages of a supply chain must be provided via the chain itself because they are not locally available. This article applies the concept of self‐sustainment to response supply chains. A mathematical model of a self‐sustaining response supply chain is developed. Analysis of this model yields insights about the relationships and interactions among self‐sustainment, speed of disaster onset, dispersion of impact, and the cost of the relief efforts. 相似文献
370.
This paper estimates the impact of cohort size on wages using data on young males in European regions covering 2004–10. The effect of cohort size on wages is identified through an instrumental variables strategy which, in contrast to previous analyses of European data, addresses self‐selection into geographical areas as well as into educational groups. The results suggest that cohort size has a significant negative effect on male wages for individuals with secondary education — the largest group — but not for individuals with less than secondary education or tertiary education. This effect is underestimated if self‐selection into geographical areas is not addressed. 相似文献