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1.
Summary:
The H–family of distributions or H–distributions, introduced by Tukey (1960; 1977), are
generated by a single transformation of the standard normal distribution and allow for leptokurtosis
represented by the parameter h. Alternatively, Haynes et al. (1997) generated leptokurtic distributions
by applying the K–transformation to the normal distribution. In this study we propose a third transformation,
the so–called J–transformation, and derive some properties of this transformation. Moreover,
so-called elongation generating functions (EGFs) are introduced. By means of EGFs we are able to
visualize the strength of tail elongation and to construct new transformations. Finally, we compare the
three transformations towards their goodness–of–fit in the context of financial return data. 相似文献
2.
Ricardo Maronna Matthias Fischer Jürgen Groß Andreas Karlsson 《Statistical Papers》2007,48(1):163-170
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Bo Hyun Lee Jiajia Zhu David Diaz Jeffrey Fischer Lisa Y. Flores Ching‐Lan Lin Jennah Beilgard Sarah May Melissa Munoz Mohamad Shahin Ruben Atilano 《The Career development quarterly》2017,65(4):288-301
This study extends Flores et al.'s ( 2006 ) 36‐year analysis of racial/ethnic minority (REM) career research to identify recent trends in choice of topics and leading individual and institutional contributors. The authors identified 166 articles on REM career research published from 2005 to 2015 in the Journal of Vocational Behavior, The Career Development Quarterly, the Journal of Career Assessment, and the Journal of Career Development. Of these studies, 92% were empirical, with more than three quarters of these using quantitative rather than qualitative methodology. Most frequently, the empirical studies (n = 153) were based on samples of high school (30.7%) or undergraduate (34.6%) students. The authors discuss the implications of their findings and suggest ways to expand REM career research in the future. 相似文献
5.
Gundula Fischer 《Gender, Work and Organization》2014,21(2):135-148
Although female labour force participation in Tanzania is growing, little is known about how hiring authorities fill job positions with respect to gender. Qualitative interviews with hospitality and manufacturing managers in Mwanza (Tanzania's second largest city) reveal that female deference, sexuality, domesticity and respectability constitute important recruitment and job placement criteria. This article examines the various notions behind these criteria and how they serve to include or exclude women in the workforce. It is shown that when the interaction of these criteria is conceptualized, deference and domesticity emerge as essential elements of female respectability, supporting each other in the control of women's sexuality. 相似文献
6.
Gravediggers have death as object of their work. Their activities are painful, physically and mental demanding, as well as unhealthy. Literature is scarce about this theme. The aim of this study is to evaluate gravediggers' work activities and health consequences. The methodological frame which guided this study was Dejours' psychic suffering and its association with the psychodynamic aspects of work. Data collection took place in April-May 2011 in one public and one private cemetery of S?o Paulo, Brazil. Four male workers, aged between 45 to 60 years old were interviewed. Their work activities were observed during a workday. Participants reported their life dreams, defense mechanisms and frustration. The discourse of gravediggers showed serious problems associated to physical and mental demands, public invisibility and/ or social devaluation of work. The most important physical symptom was body pain. In spite this is a preliminary study, it was possible to raise a number of work stressors and health outcomes of gravediggers, an "invisible" worker of our society. 相似文献
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The work of hospital food service is characterized by demands that can be associated with work ability--WA. The aim of this study was to evaluate factors associated with WA among hospital food service professionals and recommend intervention measures. This is a cross sectional study carried out in 2009, conducted in a hospital of S?o Paulo, Brazil. Participants were 76 (96.2%) of the eligible. They filled out a questionnaire including socio-demographic data, life styles, working conditions and WA. Multivariate linear regression analyses were performed. Factors associated with WA were age (p = 0.051), over commitment (p = 0.011), effort-reward ratio (p = 0.002) and work injuries (p < 0.001). In spite was a young population, age was associated with WA. Association with work injuries is consistent with the theoretical model that demonstrated that health status is the basis to maintain the WA. The association of effort-reward imbalance shows that issues related with work organization are relevant for these workers. The association of overcommittment suggests that workers recognize their responsibility with the therapeutic processes of patients. Results showed a number of features of different nature that should be taken into account when implementing measures to improve the WA, to be applied at different levels: individual, task and institutional. 相似文献
9.
Based on a system-theoretic discussion of sustainability, this paper aims to develop a conceptual model of a sustainable work system which is consistent with the definition of ergonomics by the IEA in 2000 (but also with earlier definitions) as well as with the triple bottom line understanding of sustainable development - comprising the management of human, social, ecological and economic capital in a balanced manner. 相似文献
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