3,860 research outputs found

    The Conway-Maxwell-Poisson distribution: distributional theory and approximation

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    The Conway-Maxwell-Poisson (CMP) distribution is a natural two-parameter generalisation of the Poisson distribution which has received some attention in the statistics literature in recent years by offering flexible generalisations of some well-known models. In this work, we begin by establishing some properties of both the CMP distribution and an analogous generalisation of the binomial distribution, which we refer to as the CMB distribution. We also consider some convergence results and approximations, including a bound on the total variation distance between a CMB distribution and the corresponding CMP limit.Comment: 26 page

    Working Effectively with Employees who Have Epilepsy

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    This brochure on employees who have epilepsy and the Americans with Disabilities Act (ADA) is one of a series on human resources practices and workplace accommodations for persons with disabilities edited by Susanne M. Bruyùre, Ph.D., CRC, SPHR, Director, Program on Employment and Disability, School of Industrial and Labor Relations – Extension Division, Cornell University. Cornell University was funded in the early 1990’s by the U.S. Department of Education National Institute on Disability and Rehabilitation Research as a National Materials Development Project on the employment provisions (Title I) of the ADA (Grant #H133D10155). These updates, and the development of new brochures, have been funded by Cornell’s Program on Employment and Disability, the Pacific Disability and Business Technical Assistance Center, and other supporters

    Indigenous belief in a just world: New Zealand Māori and other ethnicities compared

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    Striking differences in economic outcomes exist within New Zealand for Māori relative to the non-Māori population. This paper analyses whether certain beliefs and values differ systematically between Māori and non-Māori, while recognising that there is not a uniform culture for either group. Many of the beliefs and values we examine have been linked to the adoption of particular individual actions that may affect economic outcomes. For example, prior research indicates a person who believes that the world is not ‘just’, in the sense of believing that success is due to luck and connections rather than individual effort, may not be motivated to seek educational achievements, nor see the point of working hard at a job

    Stable isotope analysis of human hair and nail samples: the effects of storage on samples

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    When submitting samples for analysis, maintaining sample integrity is essential. Appropriate packaging must be used to prevent damage, contamination or loss of sample. This is particularly important for stable isotope analysis by isotope ratio mass spectrometry as this technique is capable of detecting subtle differences in isotopic composition with great precision. In a novel study, scalp hair and fingernail samples were placed in five different types of packaging, routinely used in forensic laboratories and stored for 6 weeks and 6 months. Samples were subsequently cleaned and submitted for 13C/12C, 15N/14N, 2H/1H and 18O/16O analysis. Results from 13C analysis indicate that type of packaging can cause slight changes in 13C abundance over time. Differences were noted in the 15N isotope signatures of both hair and nail samples after 6-week storage, but not after 6 months. This apparent discrepancy could be a result of the packaging not being properly sealed in the 6 weeks study. Fewer differences were noted when analyzing samples for 2H and 18O abundance

    Psychological Adjustment and Caregive Attributes in Children Referred to Contact House

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    Child abuse and neglect (CAN) encompasses a heterogenous group of adverse practices with devastating personal, social, educational, health, legal and welfare consequences. The term child abuse and neglect covers four types maltreatment: physical abuse, emotional abuse, sexual abuse, and neglect, with many children experiencing a combination of these types. Australian child protection notifications have more than doubled in the 5-year period to 2004. Of most concern is that, of all the Australian States and Territories, Queensland has the highest rate of substantiated cases with 14.1 per 1,000 children (AIHW, 2006). Childhood abuse and neglect can have profound short- and long-term effects. Children with a history of abuse and neglect have been shown to experience insecure attachment, developmental delays, diminished social skills, violent behaviour and learning problems. Previous studies have also found that abused and neglected children frequently experience a higher incidence of a diverse range of adverse mental health outcomes including helplessness and sadness, lowered self-esteem and post traumatic stress disorder. However, relatively few studies have examined the psychological adjustment of children in more immediate terms especially within an Australian context. Furthermore, adults experiencing CAN during childhood frequently exhibit diverse psychopathologies. The variability in adverse consequences suggests the existence of mediating and moderating factors influencing the level of distress experienced by children. While associations have been made between factors surrounding the type of abuse, the child’s age and gender and negative outcomes, little is known about the role of the child’s non-offending caregiver and the relationship between caregiver attributes and the level of distress experienced by the child. A primary aim of this study was to investigate caregiver attributes and the psychological adjustment of children referred to a non-government treatment centre. This specific aims were: (i) to describe the psychological adjustment of children who have experienced abuse and/or neglect (ii) to compare the psychological functioning of children presenting for treatment with a community sample of children (iii) to describe the level of psychosocial functioning of the caregivers in the clinical group across a range of psychosocial and parenting practice variables and (iv) to explore the relationship between demographic variables, factors relating to the abuse and neglect, and caregiver variables, which may predict, mediate, or moderate the child’s psychological adjustment. In addition the study aimed to establish a database for future research into treatment outcomes. Through the inclusion of a comparison community sample, this study provided evidence to complement existing research and develop a more complete picture of families living with and without CAN. The findings also offer preliminary evidence regarding the effectiveness of treatment and underscore the need for ongoing evaluation of service outcomes to optimise the quality of life for children and families affected by CAN
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