PhD. ,in Numerical Analysis. The University of Iowa,  mentor: Kendall E. Atkinson. My current research interest is in mathematical  models for ecological problems: dynamics of predator-prey type models and ecological networks algorithms.


  • Professor of Mathematics, Department of Mathematical Sciences at The University of South Dakota. 1989-> Present
  • Chair, Department of Computer Science at the University of South Dakota. 2017-2020.
  • Chair, Department of Mathematics at the University of South Dakota, 1997-2000.
  • International Collaborator Rodrigo-Ramos research Lab at Center for Genomics, Ecology & Environment (GEMA). Universidad Mayor, Santiago, Chile. 2018-Present.
  • Editorial Board Member (Associate editor) Mathematical Biosciences and Engineering (MBE), 2018->Present
  • Editorial Board member of Mathematics (MDPI), 2018->Present
  • Editorial Board member of  Mathematics: Mathematical Biology section (MMB), 2018->Present
  • Adjunct Professor, Mathematical, Computational & Modeling Sciences Center (SAL-MCMSC) at Arizona State University. 2009-> 2020.
  • faculty Summer Mathematical and Theoretical Biology Institute (MTBI) at the Center for Mathematical, Computational, and Modeling Sciences Center. Arizona State University.  2009-2020. MTBI-ASU
  • International Collaborator at Rodrigo-Ramos research Lab at Biodiversirty Laboratories of the National Center for the Environment (CENMA). 2009-2018.
  • Environmental pollution goes theoretical ecology OIKOS-Blog
  • Member of the Editorial board of BIOMAT Institute for Advanced Studies in Biosystems, 2012-2016.
  • Member of the Empowering Leadership Alliance
  • Member of the Math Alliance

Honors and Awards

  • 2012-2014 External collaborator in the grants PUCV Nº 124.730/2012, Fondecyt Nº 1120218.  "Multistability and periodicity on predator-prey models due to ecological phenomena affecting some populations" Director of the grant: Eduardo González-Olivares.
  • 2011 Presidential award for excellence in sciences, mathematics, and engineering mentoring to MTBI.
  • 2008  Harrington Lecturer "Research in Mathematical Ecology and the Struggle for Existence"
  • 2008 Fulbright Scholar at the Institute of Mathematics of the Catholic University of Valparaiso, Valparaiso, Chile.
  • 2006 Richard & Sharon Cutler Faculty Award in Liberal Arts
  • 2004 Governor's Faculty Award for Teaching with Technology
  • 2002 Governor's Faculty Award for Teaching with Technology
  • 1998 Governor's Faculty Award for Teaching with Technology
  • 1997 NSF-ILI Project  
  • 1996 USD Professor of the year, Student Association.