John C. Young

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Gauss mixtures have gained popularity in statistics and statistical signal processing applications for a variety of reasons , including their ability to well approximate a large class of interesting densities and the availability of algorithms such as EM for constructing the models based on observed data. We here consider a different motivation and(More)
In 1996, investigation of a hantavirus pulmonary syndrome (HPS) outbreak in southern Argentina found evidence of person-to-person transmission of a hantavirus. The infection control ramifications of this finding led to this review of hantavirus epidemiology in the United States; the review suggests that Sin Nombre virus infection is rarely, if ever,(More)
Hantavirus pulmonary syndrome (HPS) occurs in most infections with Sin Nombre virus and other North American hantaviruses. We report five cases of acute hantavirus infection that did not fit the HPS case definition. The patients had characteristic prodromal symptoms without severe pulmonary involvement. These cases suggest that surveillance for HPS may need(More)
Previous studies indicate that rifle shooting performance while standing is compromised when fatigued. Apprehension of suspects by police officers may involve foot pursuit and firing a weapon from a standing position. The purpose of the current study was to investigate pistol shooting performance in police officers under similar conditions of physical(More)
Introduction The sampling distribution of a T 2 statistic is well established when the statistic is based on observations taken from a multivariate normal population (MVN). With known parameters, the sampling distribution is always a chi-square distribution. In a Phase I operation with unknown parameters, where outliers need to be detected, the distribution(More)
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