A Case Study Evaluating the Risk of Infection from Middle Eastern Respiratory Syndrome Coronavirus (MERS‐CoV) in a Hospital Setting Through Bioaerosols

Middle Eastern respiratory syndrome, an emerging viral infection with a global case fatality rate of 35.5%, caused major outbreaks first in 2012 and 2015, though new cases are continuously reported around the world. Transmission is believed to mainly occur in healthcare settings through aerosolized particles. This study uses Quantitative Microbial Risk Assessment to develop a generalizable model that can assist with interpreting reported outbreak data or predict risk of infection with or without the recommended strategies. The exposure scenario includes a single index patient emitting virus‐containing aerosols into the air by coughing, leading to short‐ and long‐range airborne exposures for other patients in the same room, nurses, healthcare workers, and family visitors. Aerosol transport modeling was coupled with Monte Carlo simulation to evaluate the risk of MERS illness for the exposed population. Results from a typical scenario show the daily mean risk of infection to be the highest for the nurses and healthcare workers (8.49 × 10^?4 and 7.91 × 10^?4, respectively), and the lowest for family visitors and patients staying in the same room (3.12 × 10^?4 and 1.29 × 10^?4, respectively). Sensitivity analysis indicates that more than 90% of the uncertainty in the risk characterization is due to the viral concentration in saliva. Assessment of risk interventions showed that respiratory masks were found to have a greater effect in reducing the risks for all the groups evaluated (>90% risk reduction), while increasing the air exchange was effective for the other patients in the same room only (up to 58% risk reduction).     

Elder Abuse in Portugal: Findings From the First National Prevalence Study

In this study, we present findings of the Portuguese national prevalence study, “Aging and Violence,” the purpose of which was to estimate the prevalence of abuse and neglect of older people in family settings over a 12-month period and examine the relationship between abuse and sociodemographic and health characteristics. Through a telephone survey of a representative probability sample (N = 1,123), we evaluated 12 abusive behaviors and demographic data. Overall, 12.3% of older adults experienced elder abuse in family settings. The prevalence rates of specific types were as follows: psychological, 6.3%; financial, 6.3%; physical, 2.3%; neglect, 0.4%; and sexual, 0.2%. Logistic regression was employed to determine the relationship between abuse and covariates. The study suggests that education level, age, and functional status are significantly associated with abuse. Accurate estimates of the prevalence of elder abuse and understanding of victim and perpetrator characteristics are fundamental to designing effective strategies for prevention and intervention.     

Dimensions of ethical business cultures: comparing data from 13 countries of Europe,Asia, and the Americas

This paper reports the results of a survey-based study of perceptions of ethical business practices in 13 countries of Europe, Asia, and the Americas. Responses from more than 23,000 managers and employees were analyzed using multivariate analysis of variance and post-hoc comparisons, aimed at identifying homogenous sets of countries. Anglo countries (US, UK, Australia, and Canada) clustered together, and were joined by India in most cases. Japan and Italy formed a homogenous subset significantly different from all other countries. Countries of continental Europe, China, Mexico, and Brazil formed various mid-range groupings. The paper discusses some salient differences between groups of countries and presents implications for human resource management (HRD) practice and research.     

Human capital practices of Russian enterprises

Abstract

The goal of this study was to explore current human capital (HC) management practices (including training and development, recruitment and selection, compensation, empowerment, diversity, and work/family balance) of Russian enterprises. The data were collected at 270 large, medium and small enterprises in Moscow and four representative regional centers. The study results suggest that Russian firms tended to emphasize current HC needs, not long-term HC development strategies. The firm size had an effect on differences in training, selection and compensation practices, with large firms being more long-term oriented. Correlation between elements of the HC management model provided some preliminary evidence that Russian firms tried to coordinate selection, compensation and training procedures. In addition, firms that empowered their employees were also putting more emphasis on long-term oriented training, selection and compensation practices. Finally, there were signs that diversity was gradually becoming an important issue for Russian enterprises of all sizes. However, compared to diversity, companies' emphasis on helping their employees to deal with the work/family balance issues was much stronger.     

Asymptotic properties of MLE for partially observed fractional diffusion system with dependent noises

The paper studies long time asymptotic properties of the maximum likelihood estimator (MLE) for the signal drift parameter in a partially observed fractional diffusion system with dependent noise. Using the method of weak convergence of likelihoods due to Ibragimov and Khasminskii [1981. Statistics of Random Processes. Springer, New-York], consistency, asymptotic normality and convergence of the moments are established for MLE. The proof is based on Laplace transform computations which was introduced in Brouste and Kleptsyna [2008. Asymptotic properties of MLE for partially observed fractional diffusion system, preprint].     

Skewness of maximum likelihood estimators in dispersion models

We introduce the dispersion models with a regression structure to extend the generalized linear models, the exponential family nonlinear models (Cordeiro and Paula, 1989) and the proper dispersion models (Jørgensen, 1997a). We provide a matrix expression for the skewness of the maximum likelihood estimators of the regression parameters in dispersion models. The formula is suitable for computer implementation and can be applied for several important submodels discussed in the literature. Expressions for the skewness of the maximum likelihood estimators of the precision and dispersion parameters are also derived. In particular, our results extend previous formulas obtained by Cordeiro and Cordeiro (2001) and Cavalcanti et al. (2009). A simulation study is performed to show the practice importance of our results.     

On scale-mixture Birnbaum–Saunders distributions

We present for the first time a justification on the basis of central limit theorems for the family of life distributions generated from scale-mixture of normals. This family was proposed by Balakrishnan et al. (2009) and can be used to accommodate unexpected observations for the usual Birnbaum–Saunders distribution generated from the normal one. The class of scale-mixture of normals includes normal, slash, Student-t, logistic, double-exponential, exponential power and many other distributions. We present a model for the crack extensions where the limiting distribution of total crack extensions is in the class of scale-mixture of normals.     

Family size,father's education,and children's educational attainment in intact white families

One body of previous research has documented a negative relationship between family size and educational attainment (Blau and Duncan 1967; Sewell et al. 1980; Coleman 1988). Another body of research has argued that because parents are likely to act as potential equalizers of attainment gaps among their children, this relationship is likely to vary depending on the level of parental education (Johnson 1972; Zajonc 1976; Griliches 1979). In an attempt to integrate these two bodies of research, this study examines recent GSS data on white men and women from intact families and aged 25 and over. This research finds support for both arguments. The findings suggest that although there is a direct negative relationship between family size and educational attainment, it varies across levels of father's education. The effect of family size on educational attainment turns positive for men when the father's education is at least high school. For women, it is positive only when the father's education is at least a B.A. Additionally, this relationship holds for men born after 1950 and for women born before 1950. This study rationalizes that changing labor market conditions and cultural pressures to be educated have contributed to such differential impacts of father's education on children's educational attainment across cohorts.     

Things Temporal Exposé, Passages from Benjamin

Nineteenth-century Paris was for Walter Benjamin the site of a singular historical event, the ur-form of bourgeois modernity. It was a “hellish” time disastrously bent on repeating itself and yet a threshold of great promise and possibility. By focusing on Benjamin's 1935 and 1939 Exposés for The Arcades Project, my paper develops the keywords of the Exposés (Arcades, Fashion, etc.), and elaborates ways in which these objects articulate such different temporal possibilities. For example, “fashion” enacts an eternally recurrent and capital time, whereas “arcades” represent wish images of the past that might be actualized into utopian promises of the future. My argument develops Benjamin's “objective” framing of temporality. In the Exposés specific and phenomenal things communicate temporalities specific to modernity. Objects not only communicate time but also enable the temporal experience of the modern subject. This reading challenges idealist interpretations of temporality grounded within an interiorizing subject. I do not argue that Benjamin privileges an objective temporal horizon “over” the subject but rather that he resituates dialectical possibilities of temporality in the engagement between subjects and commonplace objects.