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Brad Greening Rutgers University Duration of Infectivity and Disease in Dynamic Networks Bobby Zandstra Florida Gulf Coast University Long- vs. Short-term Friendships and the Spread of Disease Mentor: Prof. Nina Fefferman Presentation Date: June 17, 2008. Overview.
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Brad GreeningRutgers University Duration of Infectivity and Disease in Dynamic Networks Bobby ZandstraFlorida Gulf Coast University Long- vs. Short-term Friendships and the Spread of Disease Mentor: Prof. Nina Fefferman Presentation Date: June 17, 2008
Overview • Previous Research Performed • Goals of Projects • Questions and Pathways to Successful Projects • Conclusion
Key Terms Social Network SEIS Model http://s3.amazonaws.com/readers/webupon/2008/04/09/140565_100.jpg
Previous Research Performed • Model disease spread within dynamic networks where associations shiftbased on three different measures ofnetwork centrality. • Metrics • Betweenness • Closeness • Degree • Results • New Directions to Take? • Fefferman, N.H. and K.L Ng. 2007. The role of individual choice in the evolution of social complexity. Annales Zoologici Fennici, 44:58-69. • Fefferman, N.H. and K.L Ng. 2007. How disease models in static networks can fail to approximate disease in dynamic networks. Phys. Rev. E 76, 031919
Questions to Address Duration of infectivity and disease in dynamic networks Long- vs. Short-term friendships and the spread of disease • What happens if we make the following adjustments to the dynamic workings of the network: • If we include a fixed structure such as a “family”? • If individuals make “smart” decisions concerning what friends they pick up? • If individuals aren’t “social” once they become sick? • By keeping long term friendships and minimizing short-term contacts, are you less prone to getting a disease? • Varying the percentages of long- vs. short-term social contacts on patterns of disease spread in a population over time. • Varying the percentage of each duration of friendship among social contacts over time will affect disease dynamics.
Pathways to Successful Projects Duration of infectivity and disease in dynamic networks Long- vs. Short-term friendships and the spread of disease • Assign a family structure to certain nodes in the network • Implement “smart” decision making to the friend “pick-up” stage. • Implement a fixed structure once an individual becomes sick • Determine the length of a long and short term friendship • Vary duration of long and short term friendships. • Vary percentage of long and short term friendships. • Randomly place disease in network.
Goals of Project Duration of infectivity and disease in dynamic networks Long- vs. Short-term friendships and the spread of disease • Determine how relative durations of social and disease processes interact to shape epidemics; search for variations in disease incidence (or rate of occurrence), duration, and spread caused by these different dynamics in the social network. • By keeping long term friendships and varying the percentage of short and long term contacts, we will show close knit networks of individuals contribute to the evolution of the role of a family structure in society.