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Alexandra Nielsen
Alexandra Nielsen

Alex is currently pursuing a PhD in systems science from Portland State University.  In her dissertation research she uses an agent based model to explore policies to expand treatment capacity for opioid use disorder in the US.  As a part of that research she is developing a metric of access inequality combining the Lorenz curve and Gini coefficient and the gravity model of spatial potential accessibility. Alex also currently works on Calibrated Agent Simulations for Combined Analysis of Drinking Etiologies (CASCADE), a major new alcohol policy modelling project funded by the US National Institute on Alcohol Abuse and Alcoholism (NIAAA). This project is an international collaboration between researchers at four world-leading centers in alcohol studies and policy modelling – the Sheffield Alcohol Research Group at the University of Sheffield, UK, the Alcohol Research Group at the Public Health Institute in California, the Centre for Addiction and Mental Health in Toronto, and Johns Hopkins University in Baltimore. CASCADE will develop new computer models of alcohol use which will draw on existing theories for why people drink and seek novel combinations of these theories in order to better explain the changes in alcohol use and related health harms we observe in society.