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Lorien Jasny Defends Dissertation, Moves on to Post-Doc at UC Davis

Published on March 24, 2012 by

We have another lab alumnus in Lorien Jasny, who successfully defended her dissertation “Propositional Structures in Political Culture.” Having now received her PhD, Lorien will join the Center for Environmental Policy and Behavior at UC Davis.  At Davis, she will be in charge of a project comparing belief networks with conversation dynamics. Jasny is also involved in many other projects with different types of network data. We congratulate Dr. Jasny for her great achievement and wish her the best of luck in the future.

 
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HEROIC Project Members Spiro and Johnson Present Research

Published on March 20, 2012 by

HEROIC Project members Emma Spiro and Britta Johnson presented research at the INSNA Sunbelt XXXII Conference on March 14-16th in Redondo Beach, CA. Spiro’s presentation, “A Microstructure Typology for Hyperedge Communication Events” detailed preliminary methods by HEROIC Project members to classify content on the popular micro-blogging site Twitter according to message elements. Johnson’s presentation, “Connected Communication: Network Structures of Official Communication in Disaster” detailed findings from an exploration of the posting behaviors of official emergency management-related organizations on Twitter. Spiro and Johnson also presented work on the adoption of micro-blogging technology among official government entities in the presentation “Disruptive Diffusion: Adoption of Microblog Technologies Among Government Organization.”

 
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Lab Members Present at XXXII Sunbelt Conference

Published on March 18, 2012 by

Lab members Carter Butts, Zack Almquist, Emma Spiro, Sean Fitzhugh, Adam Boessen, Ragupathyraj Valluvan, and Nicole Beckage presented research at the INSNA Sunbelt XXXII Conference in Redondo Beach, California. Lab alumni Ryan Acton, Chris Marcum, Lorien Jasny and Miruna Petrescu-Prahova also presented at the conference.

Zack Almquist presented on Sunday, March 18th work, coauthored with Carter Butts, titled “Network Diffusion and the
Effects of Geographic Heterogeneity within Human Populations.”

Emma Spiro presented work from the HEROIC Project entitled “A Microstructure Topology for Hyperedge Communication Events.”  She also co-presented with collaborator Britta Johnson from UCCS work titled “Disruptive Diffusion: Adoption of Microblog Technologies Among Urban Organizations.”

Sean Fitzhugh presented ‘Link Trace Methods for Enumeration Vertex Sets,’ which focuses on methods for efficiently locating all members of a subpopulation within a network. He demonstrated methods which are more efficient than traditional link trace methods (e.g. random walk or BFS) and which also simultaneously allow us to estimate the size of the entire network and the size of our subpopulation of interest.

Adam Boessen presented “If there’s a crime in your neighborhood, who you gonna call?” a project co-authored with John Hipp, Carter Butts, Nicholas Nagle, Ryan Acton, Christopher Marcum, and Zack Almquist. Using the Twin Communities Network Study from the American Social Fabric Project, they examined how the spatial distribution of ties affect whom people seek when concerned about the safety of their neighborhood.  Rather than relying on the immediate area surrounding their home, the results suggest that residents more frequently reach out to alters that are flung far beyond the local area.
Ragupathyraj Valluvan presented on Friday, March 16th work coauthored with Zack Almquist, Carter Butts and Animashree Anandkumar,
titled “Semi-Parametric vertex set prediction for dynamic networks using latent tree models.”
 
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HEROIC Research Accepted to ISCRAM 2012

Published on March 11, 2012 by

HEROIC PI Jeannette Sutton to present the paper “Connected Communications: Network Structures of Official Communications in a Technological Disaster.” This work investigates online information exchange behaviors of a set of state and federal organizations during the Deepwater Horizon 2010 oil spill disaster. The 9th International Conference of Information Systems for Crisis Response and Management will be held on April 22-25th in Vancouver, Canada.

 
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HEROIC PI Sutton presents to White House subcommittee

Published on February 2, 2012 by

Jeannette Sutton, PI for the HEROIC project, travelled to the White House to give a presentation to the Subcommittee on Disaster Reduction on Feb. 2.

See full article here: http://communique.uccs.edu/?p=6414

 
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Chris Marcum and Carter Butts published in Policy Studies Journal

Published on January 26, 2012 by

An article by NCASD lab Alumnus Chris Marcum along with longtime lab-collaborator Christine Bevc (UNC) and lab director Carter Butts will be featured in an upcoming special edition of the Policy Studies Journal on network statistics. “Mechanisms of Control in Emergent Interorganizational Networks” uses comparative historical network data and Butts’s network inference model to learn about how authority relations are delegated across organizational networks during disaster responses. The results show that organizations exercise control through direct channels mediated by brokerage roles, or through indirect interaction. These findings contest the long-held belief that direct interaction alone is sufficient to delegate authority relations in these types of networks.

 
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Center for Networks and Relational Analysis Launched at UCI

Published on January 10, 2012 by

NCASD PI Carter Butts will head the new Center for Networks and Relational Analysis at UCI. The Center supports interdisciplinary research and training relating to the study of network structure and the analysis of relational systems. Housed within the California Institute for Telecommunications and Information Technology, the Center provides a common institutionalized locus for students and researchers, including support for the development of shared infrastructure and co-located activities.

 
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Chris Marcum Defends Dissertation, Moves on to Post-Doc at RAND

Published on November 2, 2011 by

We have our newest lab alumnus in Chris Marcum, who successfully defended his dissertation “Social Time: Variations in Social Interaction Across the Life Course.” Having now received his PhD, Chris has begun to work as a post-doc for RAND. We congratulate Dr. Marcum for his great achievement and wish him the best of luck in the future.

 
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Sean Fitzhugh Presents at UCI’s Population, Society, and Inequality Series

Published on October 11, 2011 by

Lab member Sean Fitzhugh was invited to present his joint work with Lab PI Carter Butts and Joy Pixley to the Sociology Department’s weekly PSI Series. Using the life history graph method, he demonstrated cross-national, comparative results to examine how spell co-participation affects differences between people’s life histories.

 
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PI Sutton on Social Media in Disasters Panel

Published on October 8, 2011 by

HEROIC principal investigator Jeanette Sutton participated in a Social Media Panel for San Francisco Fleet Week 2011 Senior Leaders Seminar on October 7th, 2011.

 
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