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I am a mathematician who uses models to study how communities work, in both ecological and social settings.

Several of the projects I've worked on have involved transitions between competitive and cooperative dynamics or long-term changes in structure and process in complex communities. The thread that connects my research is my underlying interest in distributed governance: how to coexist to mutual benefit when control is not centralized but immanent throughout the community.

I completed a Ph.D. in applied mathematics in 2003, focusing on evolution and ecology.

From 2003 through 2005 I worked with Alan Hastings and Louis Botsford at UC Davis, on the population biology of age-structured Pacific salmon species. From 2005 through 2007, I was a Ciriacy-Wantrup postdoctoral fellow at UC Berkeley, working on research related to self-organization and sustainability.

I'm currently a postdoc with Jonathan Dushoff's team at McMaster University, working on dynamics of HIV transmission in Africa.

I'm also the author of WorkingWiki, an extension to the widely-used MediaWiki software package that makes it into a platform for managing research data together with the software scripts that process the data, simulation software, the figures made from the software's output, and the papers that include the figures.

When I get a chance I'm pursuing research on dynamics of consensus formation as well (see proposal), and continuing work on older projects.

I'm posting updates in two different sections of this site:
News and Research: occasional updates for general consumption (visible in the right column of this page);
Open Lab Notebook: frequent updates on ongoing projects.

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