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11.
12.
Randomized response techniques are widely employed in surveys dealing with sensitive questions to ensure interviewee anonymity
and reduce nonrespondents rates and biased responses. Since Warner’s (J Am Stat Assoc 60:63–69, 1965) pioneering work, many
ingenious devices have been suggested to increase respondent’s privacy protection and to better estimate the proportion of
people, π
A
, bearing a sensitive attribute. In spite of the massive use of auxiliary information in the estimation of non-sensitive parameters,
very few attempts have been made to improve randomization strategy performance when auxiliary variables are available. Moving
from Zaizai’s (Model Assist Stat Appl 1:125–130, 2006) recent work, in this paper we provide a class of estimators for π
A
, for a generic randomization scheme, when the mean of a supplementary non-sensitive variable is known. The minimum attainable
variance bound of the class is obtained and the best estimator is also identified. We prove that the best estimator acts as
a regression-type estimator which is at least as efficient as the corresponding estimator evaluated without allowing for the
auxiliary variable. The general results are then applied to Warner and Simmons’ model. 相似文献
13.
In this case study, we detail and analyze how the Tobacco Control Evaluation Center (TCEC), an evaluation technical assistance center that serves approximately 100 local tobacco control organizations in California, endeavors to build capacity among the state-funded local providers it serves by using evaluation capacity building activities with an utilization-focused evaluation framework. We call this a "blended approach" and describe these methods. Satisfaction and demand for TCEC services are documented to provide measurements for evaluation capacity building. Final evaluation report scores from two intervention cycles (2004-2007 and 2007-2010) submitted to the California Health Department, Tobacco Control Division are also assessed and compared. These measures demonstrate an increase in evaluation capacity by local projects under TCEC's purview. 相似文献
14.
In this paper we introduce a new family of robust estimators for ARMA models. These estimators are defined by replacing the residual sample autocovariances in the least squares equations by autocovariances based on ranks. The asymptotic normality of the proposed estimators is provided. The efficiency and robustness properties of these estimators are studied. An adequate choice of the score functions gives estimators which have high efficiency under normality and robustness in the presence of outliers. The score functions can also be chosen so that the resulting estimators are asymptotically as efficient as the maximum likelihood estimators for a given distribution. 相似文献
15.
Diana Hunt 《Development policy review : the journal of the Overseas Development Institute》2005,23(2):199-231
Since the early 1990s, the dominant consensus in the debate on land rights reform in sub‐Saharan Africa has been that external interventions to privatise land rights are usually inappropriate and likely to remain so. This article suggests that two elements in the debate – the scope for varying adjudication criteria, procedures and support systems in order to enhance equity, and the influence of a region's agro‐ecological and socioeconomic characteristics on the impacts of tenure change – merit further attention. The article urges a shift towards a more pragmatic approach, sensitive to the diversity of both physical and socio‐economic conditions within which tenure systems operate. Illustrative evidence is drawn from a relatively low‐potential farming region in eastern Kenya. 相似文献
16.
Factor screening designs for searching two and three effective factors using the search linear model are discussed. The construction of such factor screening designs involved finding a fraction with small number of treatments of a 2m factorial experiment having the property P2t (no 2t columns are linearly dependent) for t=2 and 3. A ‘Packing Problem’ is introduced in this connection. A complete solution of the problem in one case and partial solutions for the other cases are presented. Many practically useful new designs are listed. 相似文献
17.
Diana Bilimoria 《Human Relations》1997,50(7):829-858
This study examines the influence on CEO paypractices of four corporate control perspectives:managerial control, class hegemony, external control,and efficient market. The results indicate the influence of both market and extra-market controls on thedetermination of CEO pay levels and criteria.Implications for the governance of firms and the studyof corporate control are drawn. 相似文献
18.
19.
Emma Hamilton Diana R. Samek Margaret Keyes Matthew K. McGue William G. Iacono 《Adoption quarterly》2015,18(3):217-233
It has been argued that transracially adopted children have increased risk of problems related to self-esteem and ethnic identity development. We evaluated this hypothesis across four groups of transracial adoptees: Asian (n = 427), Latino (n = 28), Black (n = 6), mixed/other (n = 20), and same-race White adoptees (n = 126) from 357 adoptive families. No mean differences were found in adoptees’ ratings of affect about adoption or of curiosity about birth parents. Some differences were found in general identity development and adjustment. There were notable differences in communication about race/ethnicity across groups and between parent and child report. 相似文献
20.
Considerable public health literature focuses on relationships between problematic human characteristics (e.g., psychopathology) and unhealthy behaviors. A recent movement termed positive psychology emphasizes the advantages of assessing relationships between human strengths (e.g., altruism) and beneficial health behaviors. The present study assessed social responsibility, an orientation to help or protect others even when there is nothing to be gained as an individual, and its relationship to HIV-relevant behaviors. In our sample of 350 men who have sex with men (MSM), social responsibility was negatively correlated with substance use and HIV risk behaviors. Men who had been tested for HIV and knew their HIV status—a behavior that helps men protect their partners but does not protect themselves from the virus—also scored higher in social responsibility. Interventions designed to reduce HIV risk behavior in MSM may benefit from efforts to promote human strengths. 相似文献