Jeffrey Humpherys, PhD

Languages spoken: English

Academic Information

Departments: Internal Medicine - Research Professor

Divisions: Epidemiology

Academic Office Information

jeff.humpherys@hsc.utah.edu

Education History

Research Fellow Intermountain Healthcare, Institute for Health Care Delivery Research
 Research Fellow
Doctoral Training Indiana University
Mathematics 		Ph.D.
Graduate Training Indiana University
Mathematics 		M.A.
Undergraduate Utah State University
Mathematics 		B.S.

Selected Publications

  1. Scott Anjewierden, Jeffrey Humpherys, Martin J LaPage, Yukiko Asaki, and Peter F Aziz (2021). Incidence of tachyarrhythmia in infants using direct-to-consumer heart rate and oxygen monitoring. J Pediatr, 232, 147-153.
  2. Jeffrey Humpherys and Tyler Jarvis (2021). Foundations of Applied Mathematics, Volume 2: Algorithms, Approximation, Optimization. Society for Industrial and Applied Mathematics (SIAM).
  3. Mary Jo Pugh, et al (2021). Phenotyping the Spectrum of Traumatic Brain Injury: A Review and Pathway to Standardization. Journal of Neurotrauma, 38(23), 3222-3234.
  4. Jeffrey Humpherys et al (2021). Topic-to-Topic Modeling for COVID-19 Mortality. Ninth IEEE International Conference on Healthcare Informatics (ICHI), IEEE.
  5. Barbara E Jones, et al (2021). Computerized mortality prediction for community-acquired pneumonia: a comparison of simple versus complex approaches at 117 VA Medical Centers. Ann Am Thorac Soc, 18(7), 1175-1184.
  6. Chunyang Li, et al (2021). Predicting survival in veterans with follicular lymphoma using structured electronic health record information and machine learning. Int J Environ Res Public Health, 18(5), 2679-2698.
  7. Jeffrey Humpherys, Tyler Jarvis, and Emily Evans (2017). Foundations of Applied Mathematics, Volume 1:  Mathematical Analysis. Society for Industrial and Applied Mathematics (SIAM).
  8. Jeffrey Humpherys, Gregory Lyng, and Kevin Zumrbun (2017). Multidimensional spectral stability of large-amplitude Navier-Stokes shocks. Arch Ration Mech Anal, 226(3), 923-973.
  9. David Kartchner, Tanner Christensen, Jeffrey Humpherys, and Sean Wade (2017). Code2Vec: Embedding and clustering medical diagnosis and procedure data. Fifth IEEE International Conference on Healthcare Informatics (ICHI), IEEE.
  10. Humpherys J, Lytle J (2015). Root following in Evans function computation. SIAM J Numer Anal, 53(5), 2329-46.
  11. Hendricks J, Humpherys J, Lyng G, Zumrbun K (2015). Stability of weak detonations in Majda’s model. J Dyn Differ Equ, 27(2), 237-60.
  12. Barker B, Humpherys J, Lyng G, Zumbrun K (2015). Viscous hyperstabilization of detonation waves in one space dimension. SIAM J Appl Math, 75(3), 885-906.
  13. Beard RW, Ferrin J, Humpherys J (2014). Following straight line and orbital paths with input constraints. IEEE Trans Control Syst Technol, 22(6), 2103-17.
  14. Humpherys J, Lyng G, Zumbrun K (2013). Stability of viscous detonations for Majda’s model. Physica D, 259, 63-80.
  15. Ghazaryan A, Humpherys J, Lytle J (2013). Spectral behavior of combustion fronts with high exothermicity. SIAM J Appl Math, 73(1), 422-37.
  16. Humpherys J, Redd P, West JM (2012). A fresh look at the Kalman filter. SIAM Rev Soc Ind Appl Math, 54(4), 801-23.
  17. Humpherys J, Zumbrun K (2012). Efficient numerical stability analysis of detonation waves in ZND. Q Appl Math, 70(4), 685-703.
  18. Beard RW, Humpherys J (2011). Following Straight Line and Orbital Paths with Input Constraints. San Francisco, CA: Proceedings of the American Controls Conference.
  19. Taylor CN, Beard RW, Humpherys J (2011). Dynamic input consensus using integrators. San Francisco, CA: Proceedings of the American Controls Conference.
  20. Humpherys J, West J (2010). Kalman filtering with Newton’s method. 30(6), 101-6.
  21. Barker B, Humpherys J, Zumbrun K (2010). One-dimensional stability of parallel shock layers in isentropic magnetohydrodynamics. J Differ Equ, 249(9), 2175-213.
  22. Humpherys J, Lafitte O, Zumrbun K (2010). Stability of isentropic viscous shock profiles in the high Mach number limit. Commun Math Phys, 293(1), 1-36.
  23. Ewald BD, Humpherys J, West J (2010). Computing expected transition events in reducible Markov chains. SIAM J Matrix Anal Appl, 31(3), 1040-54.
  24. Burton C, Heasley M, Humpherys J, Li J (2010). Pricing of American retail options. Baltimore, MD: Proceedings of the American Controls Conference.
  25. Humpherys J, Lyng G, Zumrbun K (2009). Spectral stability of ideal-gas shock layers. Arch Ration Mech Anal, 194(3), 1029-79.
  26. Costanzino N, Humpherys J, Nguyen T, Zumbrun K (2009). Spectral stability of large-amplitude noncharacteristic boundary layers. Arch Ration Mech Anal, 192(3), 537-87.
  27. Humpherys J (2009). On the shock wave spectrum for isentropic gas dynamics with capillarity. J Differ Equ, 246(7), 2938-57.
  28. Angelos B, Heasley M, Humpherys J (2009). Option pricing for inventory management and control. Proceedings of the American Controls Conference, St. Louis, MO.
  29. Humpherys J, West J (2009). Discrete event counting in multiagent Markov processes. Proceedings of the American Controls Conference, St. Louis, MO.
  30. Barker B, Humpherys J, Rudd K, Zumbrun K (2008). Stability of viscous shocks in isentropic gas dynamics. Commun Math Phys, 281(1), 231-49.
  31. Karpowitz DJ, Cox JJ, Humpherys JC, Warnick SC (2008). A dynamic workflow framework for mass customization using web service and autonomous agent techniques. J Intell Manuf, 19(5), 537-52.
  32. Barker B, Humpherys J, Rudd K, Lafitte O, Zumbrun K (2008). Stability of isentropic Navier–Stokes shocks. Appl Math (Irvine), 21(7), 742-7.
  33. Dougal C, Merriman D, Humpherys J, Warnick S (2007). Market share dynamics in a virtual fund management system. Proceedings of the American Controls Conference, New York, NY.
  34. Humpherys J, Zumbrun K (2006). An efficient shooting algorithm for Evans function calculations in large systems. Physica D, 220(2), 116-26.
  35. Humpherys J, Sandstede B, Zumbrun K (2006). Efficient computation of analytic bases in Evans function analysis of large systems. Numer Math (Heidelb), 103(4), 631-42.
  36. Humpherys J (2005). Admissibility of viscous-dispersive systems. 2(4), 1-13.
  37. Humpherys J (2004). On the stability of viscousdispersive fronts. Hyperbolic Problems: Theory, Numerics and Applications. Proceedings of the 10th International Conference, Yokohama Publishers, Vol II.
  38. Humpherys J (2003). Stability of Jin-Xin relaxation shocks. Q Appl Math, 61(2), 251-63.
  39. Humpherys J, Zumbrun K (2002). Spectral stability of small-amplitude shock profiles for dissipative symmetric hyperbolic-parabolic systems. Z Angew Math Phys, 53(1), 20-34.
  40. Farrelly D, Humpherys J (1995). Comment on "Signature of classical chaos on quantum tunneling". Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics, 51(6), 6313-6315.
  41. Howard JE, Humpherys J (1995). Nonmonotonic twist maps. Physica D, 80(3), 256-76.
  42. Farrelly D, Humpherys J, Uzer T (1993). Normalization of resonant Hamiltonians. Hamiltonian mechanics. NATO Advanced Science Institutes Series B: Physics. NATO Advanced Science Institutes Series B: Physics, 331, 237-44.