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31.
Several variance estimators using auxiliary information were compared for estimating the variance of the total or ratio under a one unit per stratum sample design. The auxiliary information used consisted of data from the 1977 and 1982 Economic Census. One thousand probability proportional to size one primary sampling unit per stratum samples were selected for the Monte Carlo study of characteristics of interest in a content evaluation survey as part of the 1982 Economic Census program. Six variance estimators were applied to each sample and their bias and mean square errors were evaluated. The results are strikingly different between the variance estimators of the estimated total and ratio. 相似文献
32.
Luke Fowler 《The Social Science Journal》2017,54(3):287-294
Trends in state-level public opinion on the environment within the U.S. are examined, using data from the General Social Survey (GSS) from 1976 to 2008. Multilevel Regression and Post-Stratification (MRP) approach estimates public support for environmental spending at the U.S. state-level over three decades. This allows for an analysis of inter-state homogeneity of environmental public opinion, over the latter half of the twenty century. The findings indicate state-level trends mirror those at the national-level, but state-level public opinion is becoming more analogous over time. 相似文献
33.
Abstract Although a great deal of research has been carried out in the occupational stress field, little work has focused on the link between corporate financial performance and corporate culture on individual stress. The sample comprised senior marketing managers working in 14 electronics companies selected on the basis of their recent profit/loss performance. It was found that corporate financial performance and culture variables were more strongly associated with many of the felt stresses than were the individual and role-related predictors. 相似文献
34.
Fowler Alan 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》1998,9(3):201-211
Nonprofit research and resulting theory have evolved in a limited context of North American and West European historical experience, culture, and political economy. Recognizing this fact, Estelle James proposes, among other things, a widening of the research arena. This response to her proposals argues that existing studies of nonprofits involved in international development already provide significant comparative evidence that can enrich existing theory. This body of work suggests complementary and alternative research priorities. 相似文献
35.
The connection between leadership or management style, on the one hand, and perceptions of bullying, on the other, has received little attention within bullying research. Hence, the aim of this study is to examine the relationship between subordinates' ratings of their immediate superiors' behaviours, and both perceived exposure and claims of observations of bullying at work. Based on a sampling process which emphasized randomness and representativeness, the responses from 5288 respondents in Great Britain taking part in a nationwide study on psychosocial issues at work were included in the analysis. Bullying correlated with all four leadership styles measured. Yet, ‘non‐contingent punishment’ emerged as the strongest predictor of self‐perceived exposure to bullying, while autocratic leadership was the strongest predictor of observed bullying. Hence, while observers particularly associate bullying with autocratic or tyrannical leader behaviour, targets relate bullying more to non‐contingent punishment, i.e. an unpredictable style of leadership, where punishment is meted out or delivered on leaders' own terms, independent of the behaviour of subordinates. In addition, laissez‐faire leadership emerged as a predictor of self‐reported as well as observed bullying. Thus, leadership styles seem to play an important but complex role in the bullying process. 相似文献
36.
Serhat Gul Brian T. Denton John W. Fowler Todd Huschka 《Production and Operations Management》2011,20(3):406-417
Uncertainty in the duration of surgical procedures can cause long patient wait times, poor utilization of resources, and high overtime costs. We compare several heuristics for scheduling an Outpatient Procedure Center. First, a discrete event simulation model is used to evaluate how 12 different sequencing and patient appointment time‐setting heuristics perform with respect to the competing criteria of expected patient waiting time and expected surgical suite overtime for a single day compared with current practice. Second, a bi‐criteria genetic algorithm (GA) is used to determine if better solutions can be obtained for this single day scheduling problem. Third, we investigate the efficacy of the bi‐criteria GA when surgeries are allowed to be moved to other days. We present numerical experiments based on real data from a large health care provider. Our analysis provides insight into the best scheduling heuristics, and the trade‐off between patient and health care provider‐based criteria. Finally, we summarize several important managerial insights based on our findings. 相似文献
37.
Products that do not meet the specification criteria of an intended buyer represent a challenge to the producer in maximizing profits. To understand the value of the optimal process target (OPT) set at a profit-maximizing level, a model was developed by Shao et al. (1999) involving multiple markets and finished products having holding costs independent from their quality. Investigation in cases considered previously has involved holding costs as a fixed amount or as a normal random variable independent of the quality characteristic (QC) of the product. Less specific in nature, this study considers more general cases in which the HC can be a truncated normal random variable, which is dependent on the QC of the product. 相似文献
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Karen D. Rudolph Megan M. Davis Haina H. Modi Carina Fowler Yuji Kim Eva H. Telzer 《Journal of research on adolescence》2020,30(Z1):177-191
This research examined whether heightened neural activation to social cues confers adjustment advantages in supportive social contexts but adjustment disadvantages in stressful social contexts. Forty‐five adolescent girls were exposed to social exclusion during an fMRI scan and reported on parent–child relationship quality and depressive symptoms. Stressful parent–child relationships predicted subsequent depressive symptoms in girls with high and moderate but not low dorsal anterior cingulate cortex, subgenual anterior cingulate cortex, and anterior insula activation during exclusion. In the context of supportive parent–child relationships, however, neural activation to exclusion predicted particularly low levels of depressive symptoms. This support for a biological sensitivity to context model suggests the possibility of redirecting adolescent girls’ neural sensitivity to social cues toward more positive adaptation. 相似文献