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This paper presents an asymptotic equivalence result with a sharp rate of convergence forthe sample median and the Harrell-Davis median estimator. The consequences of this result are discussed. 相似文献
64.
Terry McNulty Andrew Pettigrew Greg Jobome Clare Morris 《Journal of Management and Governance》2011,15(1):91-121
This paper develops an analytical framework to depict the heterogeneity that characterises the role of board chair and demonstrate
the potential variability in how chairs operate boards and exercise power and influence on strategy, control and resource
related tasks at board level. Theories of power and influence, as applied to top management teams and boards of directors,
are explicated within the context of contemporary governance practices that are establishing the role of the board chair as
distinct to that of the chief executive officer. Specifically, the paper maps sources of power and varying contemporary chair
practices, including chair nomenclature (i.e. executive vs. non-executive chairs), chair origin (insider vs. outsider) and
chair time (full-time vs. part-time). A number of theoretical chair-power models emerge from this analysis and are subject
to empirical analysis using data collected from 160 chairs of 500 FTSE-listed companies. Theoretically and empirically, the
paper complements structural approaches to studying boards with attention to behaviour on boards. By linking board structure,
board process and the exercise of influence, the study reveals both differences amongst chairs in how they run the board,
but also that chairs’ differ in the influence they exert on board-related tasks. Full-time executive chairs exert their greatest
influence in strategy and resource dependence tasks whereas part-time, non-executive chairs seem to exert more influence over
monitoring and control tasks. 相似文献
65.
Dissemination of risk information is ubiquitous in contemporary society. We explore how individuals react in everyday life to health-risk information, based on what they report in personal interviews. Health-risk information was without exception recognized as unstable and inconsistent. This conformity, however, did not extend to the narratives regarding how health-risk information should be handled. Two opposite positions (ideal-typical strategies) are presented. Either you tend to process and evaluate new information or you tend to ignore it as a whole. Our attempt to reveal the underlying rationality in these two very different approaches involved the exploration of three different avenues of interpretation and brings together two scientific paradigms--economics and sociology--that provide the framework for our analysis. First, we suggest that a greater long-term experience of explicit choice implies that this kind of action becomes more natural and less resource consuming, whereas a reliance on habits in daily life--a natural adjustment to a lack of resources--makes it is more costly to bother about new information. Second, with fewer resources in the short run, fewer opportunities to mitigate bad outcomes, and greater exposure to social and material risks, one is less likely to devote resources to deal with health-risk information. Third, there are several possible links between a low propensity to take account of risk information and a high relative importance of genuine uncertainty in one's life. These theoretical perspectives provide a viable set of hypotheses regarding mechanisms that may contribute to social differences in the response to health-risk information. 相似文献
66.
Ray Morris 《Revue canadienne de sociologie》1991,28(2):225-254
Les caricatures éditoriales forment un métalangage pour parler de l'ordre social. Elles créent des mondes imaginaires qui permettent une nouvelle perspective sur le monde actuel en renversant certains de ses traits. Les dessins de Len Norris sur le bilinguisme montrent un monde carnavalesque. Dans les légendes ses personnages offrent des commentaires sur notre monde et captent le parcoureur, qui doit avouer que ces bouffons ont remarqué ce qui nous avait échappé. Les optiques sémiologiques de Greimas et d'Angenot permettent d'éclairer et de situer le modèle linguistique de Norris, et son avertissement qu'une nouvelle lingua franca fédérate est en train de remplacer symboliquement et le français et l'anglais. Editorial cartoons are a metalanguage for discourse about the social order. They create imaginary worlds which allow a fresh perspective on the present world by inverting certain of its features. Len Norris' cartoons on bilingualism portray a zany imaginary world, whose characters comment in the captions on our world and trap the skimmer into admitting that these fools have noticed something which we have missed. Greimas' and Angenot's semiotic approaches serve to elicit and situate Norris' elaborate model of language skills, and his message about the symbolic replacement of both French and English by federal bilingualese. 相似文献
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This study integrated risk‐benefit analysis with prospect theory with the overall objective of identifying the type of management behavior represented by farmers’ choices of mastitis control options (MCOs). Two exploratory factor analyses, based on 163 and 175 Swedish farmers, respectively, highlighted attitudes to MCOs related to: (1) grouping cows and applying milking order to prevent spread of existing infection and (2) working in a precautionary way to prevent mastitis occurring. This was interpreted as being based on (1) reactive management behavior on detection of udder‐health problems in individual cows and (2) proactive management behavior to prevent mastitis developing. Farmers’ assessments of these MCOs were found to be based on asymmetrical evaluations of risks and benefits, suggesting that farmers’ management behavior depends on their individual reference point. In particular, attitudes to MCOs related to grouping cows and applying milking order to prevent the spread of mastitis once infected cows were detected were stronger in the risk domain than in the benefit domain, in accordance with loss aversion. In contrast, attitudes to MCOs related to working in a precautionary way to prevent cows from becoming infected in the first place were stronger in the benefit domain than in the risk domain, in accordance with reverse loss aversion. These findings are of practical importance for farmers and agribusiness and in public health protection work to reduce the current extensive use of antibiotics in dairy herds. 相似文献
69.
Maternal and Child Anxiety: Do Attachment Beliefs or Children's Perceptions of Maternal Control Mediate Their Association? 总被引:1,自引:0,他引:1
This study tested a model of the association between maternal and child anxiety that views mother and child attachment beliefs and children's perceptions of maternal control as mediators of the association. The study was conducted with mothers and their children aged 6 to 17 (N = 88). Maternal anxiety was significantly associated with child anxiety and maternal anxious attachment beliefs, whereas child anxiety was associated with maternal anxious attachment beliefs, child insecure attachment beliefs, and children's perceptions of maternal control. Maternal anxious attachment beliefs mediated the association between maternal and child anxiety; however, child attachment beliefs and children's perceptions of maternal control did not. The influence of age and gender is also addressed. The findings are discussed in terms of elucidating the role of attachment beliefs and children's perceptions of maternal control on the association between maternal and child anxiety. 相似文献
70.