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Assessing Relevance Of Tweets For Risk Communication, Xiaohui Liu, Bandana Kar, Chaoyang Zhang, David M. Cochran Jun 2018

Assessing Relevance Of Tweets For Risk Communication, Xiaohui Liu, Bandana Kar, Chaoyang Zhang, David M. Cochran

Faculty Publications

Although Twitter is used for emergency management activities, the relevance of tweets during a hazard event is still open to debate. In this study, six different computational (i.e. Natural Language Processing) and spatiotemporal analytical approaches were implemented to assess the relevance of risk information extracted from tweets obtained during the 2013 Colorado flood event. Primarily, tweets containing information about the flooding events and its impacts were analysed. Examination of the relationships between tweet volume and its content with precipitation amount, damage extent, and official reports revealed that relevant tweets provided information about the event and its impacts rather than any …


Organizing Under Austerity: How Residents’ Concerns Became The Flint Water Crisis, Amy Krings, Dana Kornberg, Erin Lane Mar 2018

Organizing Under Austerity: How Residents’ Concerns Became The Flint Water Crisis, Amy Krings, Dana Kornberg, Erin Lane

Social Work: School of Social Work Faculty Publications and Other Works

What might it take for politically marginalized residents to challenge cuts in public spending that threaten to harm their health and wellbeing? Specifically, how did residents of Flint, Michigan contribute to the decision of an austerity regime, which was not accountable to them, to spend millions to switch to a safe water source? Relying on evidence from key interviews and newspaper accounts, we examine the influence and limitations of residents and grassroots groups during the 18-month period between April 2014 and October 2015 when the city drew its water from the Flint River. We find that citizen complaints alone were …


Defining Extreme Events: A Cross-Disciplinary Review, Lauren E. Mcphillips, Heejun Chang, Mikhail Chester, Yaella Dipletri, Erin Friedman, Nancy B. Grimm, John S. Kominoski, Timon Mcphearson, Pablo Méndez-Lázaro, Emma J. Rosi, Javad Shafiei Shiva Mar 2018

Defining Extreme Events: A Cross-Disciplinary Review, Lauren E. Mcphillips, Heejun Chang, Mikhail Chester, Yaella Dipletri, Erin Friedman, Nancy B. Grimm, John S. Kominoski, Timon Mcphearson, Pablo Méndez-Lázaro, Emma J. Rosi, Javad Shafiei Shiva

Geography Faculty Publications and Presentations

Extreme events are of interest worldwide given their potential for substantial impacts on social, ecological, and technical systems. Many climate-related extreme events are increasing in frequency and/or magnitude due to anthropogenic climate change, and there is increased potential for impacts due to the location of urbanization and the expansion of urban centers and infrastructures. Many disciplines are engaged in research and management of these events. However, a lack of coherence exists in what constitutes and defines an extreme event across these fields, which impedes our ability to holistically understand and manage these events. Here, we review 10 years of academic …