Education History

  • B S Biological Resources Engineering, University of Maryland
  • M S Biological Resources Engineering, University of Maryland
  • M S Technical Management, Johns Hopkins University

Work Experience

Senior Professional Staff, JHU Applied Physics Laboratory

Publications

“The correlation between personality type and performance time while wearing a respirator.” Koh, F.C., Johnson, A.T., Scott, W.H., Phelps, S.J., Francis, E.B., Cattungal, S. 2006. Journal of Occupational and Environmental Hygiene. 3 (6): 317-322.

“How far can one walk wearing a self-contained self-rescuer?” Johnson, A.T., Scott, W.H. Jr., Koh, F.C., Phelps, S.J., Francis, E.B., and Lopresti, E. 2006. Journal of Occupational and Environmental Hygiene. 4 (1): 49-53.

“Using self-contained self-rescuers at high work rates.” Johnson, A.T., Phelps, S.J., Scott, W.H., and Koh, F.C. 2005. Journal of the International Society for Respiratory Protection. 22: 106-111.

Exercise performance while wearing a tight-fitting powered air purifying respirator with limited flow.” Johnson, A.T., Mackey, K.R., Scott, W.H., Koh, F.C., Chiou, K.Y.H., and Phelps, S.J. 2005. Journal of Occupational and Environmental Hygiene. 2: 368-373.

“How is respirator comfort affected by respiratory resistance?” Johnson, AT., Scott, W.H., Phelps, S.J., Caretti, D.M., and Koh, F.C. 2005. Journal of the International Society for Respiratory Protection. 22 (38): 38-46.

Honors and Awards

  • Nominee – APL Achievement Award: Outstanding Mission Accomplishment (2015)
  • DHS DNDO Director’s Team Award (2007)