Ph.D. Industrial and Operations Engineering, University of Michigan (2015)M.S.E. Industrial and Operations Engineering, University of Michigan (2011)B.S.I.E. Industrial and Manufacturing Engineering, Management Minor, Kettering University (2008)

My research interest include integer programming and combinatorial optimization, healthcare systems engineering, Six Sigma and process improvement, applying lean enterprise to healthcare and manufacturing applications, optimization of disassembly and remanufacturing systems.


  • Outstanding Undergraduate Teaching Award, Selected by students in Systems Engineering 2021
  • Professor of the Year in Industrial Engineering, Clemson University 2019
  • Byars Prize for Teaching Excellence, Clemson University 2016
  • National Science Foundation Graduate Research Fellow 2010

Research Interests

  • Optimization and Operations Research
  • Lean and Six Sigma
  • Healthcare Systems Engineering
  • Game Theory

Selected Publications

  • Social Choice Rules, Fallback Bargaining, and Related Games in Common Resource Conflicts ABS Bahrini, A., Riggs, R.J., and Esmaeli, M., Journal of Hydrology, 602(10), 2021
  • Profit-oriented partial disassembly line design: dealing with hazardous parts and task processing times uncertainty ABS Bentah, M.L., Dolgui, A., Battaia, O., Riggs, R.J., and Hu, S.J., International Journal of Production Research, 56(24), 2018
  • Two-stage sequence generation for partial disassembly of products with sequence dependent task times ABS Riggs, R.J., Jin, X., and Hu, S.J., Procedia CIRP, 29, 2015
  • Disassembly line balancing under high variety of end of life states using a joint precedence graph approach ABS Riggs, R.J., Batta├»a, O., and Hu, S.J., Journal of Manufacturing Systems, 37(3), 2015
  • Disassembly liaison graphs inspired by word clouds ABS Riggs, R.J., and Hu, S.J, Procedia CIRP, 7, 521-526, 2013

Courses Taught

  • SYS 3021: Deterministic Decision Models Fall 2019, 2020, 2021
  • SYS 3060: Stochastic Decision Models Spring 2020, 2021, and Summer 2020, 2021
  • SYS 6003: Optimization Models and Methods 1 Fall 2019, 2020, 2021
  • SYS 3055: Systems Engineering Design Colloquium 1 Fall 2019, 2020, 2021
  • SYS 4055: Systems Engineering Design Colloquium 2 Fall 2020, 2021
  • SYS 4852: Introduction to Lean Enterprise and Six Sigma Spring 2020, Summer 2020, 2021, and J-Term 2021
  • SYS 4053/4054: Systems Design 1/2 2020/2021, 2021/2022