Education

  • Ph.D. Mathematics, City University of New York, Graduate Center, October 2003.
    Advisor: Alexei Miasnikov
    Thesis: Algorithmic problems on automorphic conjugacy in the free group of rank 2.
  • M.Sc. Computer Science, Johns Hopkins University, December, 1997.
    Advisor: Baruch Awerbuch
    Thesis: Algorithms for topology aggregation and competitive on-line routing.
  • B. Sc. Math and Computer Science, Massachusetts Institute of Technology, May 1993.


    Employment

  • Sept. 2022-Present, Professor of Data Science
    Departments of Population Health and Computer Science, Lehigh University.
  • Sept. 2022-Present, Director of the Health Data Science
  • Sept. 2016-2021, Happold Professor of Sociology and Computer Science
    Departments of Sociology and Computer Science, University of Nebraska-Lincoln.
  • Co-Director, Longitudinal Networks Core, Rural Drug Addiction Center (COBRE) Sept 2019-2021.
  • Sept. 2009-2016, Professor of Mathematics and Computer Science
    Department of Mathematics & Computer Science, City University of New York, John Jay College.
    Doctoral Faculty CUNY Graduate Center, in Computer Science, 2005-2016;
    Doctoral Faculty CUNY Graduate Center, in Criminal Justice, 2008-2016.
    Graduate Faculty of Digital Forensics and Cybersecurity at John Jay College
  • Sept. 2004-Aug. 2009, Associate Professor
    Department of Mathematics & Computer Science, City University of New York, John Jay College.
  • Oct. 2000-Sept. 2004. Principal Research Scientist
    January 1996-Sept. 2000. Research Scientist
    Center for Computational Sciences,
    U.S. Naval Research Laboratory (NRL), Washington, DC.
  • Co-Director, Social Networks Research Group (www.snrg-nyc.org). Jan 2009-2016.
  • Research Affiliate. Center for Drug Use & HIV Research (NIH sponsored Center for Excellence) New York University & National Development Research Institute (August 2011-2018).
  • Organizer for New York City Forensics and Security Group (NYC4SEC), a group of area professionals addressing industry needs in computer security and forensics 2009-2016.
  • Director of John Jay College Laboratory for Digital Forensics and Cybersecurity (2004-2016).
  • Research Affiliate at several public policy research institutes, including the Center for Court Innovation (NYC) and the Urban Institute (Washington DC).
    Member of IEEE, ACM, AMS, SIAM