Expanding traditional time geography, this study examines personal exposure to air pollution and personal pollutant intake, and defines personal health danger zones by accounting for individual level space-time behavior. A 3D personal air pollution and health risk map is constructed to visualize individual space-time path, personal Air Quality Indexes (AQIs), and personal health danger zones. P...

BackgroundDiaphragm paralysis (DP) complicates the postoperative course of neonates and infants undergoing cardiac surgery. Events causing DP remain poorly understood, preventive strategies elusive. This retrospective cohort analysis aims to test hypothesis that chest tubes in contact with phrenic nerve pleural apex may cause pressure palsy.MethodsIn late 2018, tube positioning strategy was cha...

Although combat-related posttraumatic stress disorder (PTSD) has been documented for military combatants, little is known about PTSD in noncombatants. Active-duty U.S. Air Force noncombatants (N = 5,367) completed a Post-Deployment Health Assessment upon return from combat zones in Iraq (n = 4,408) or a noncombat zone in Qatar (n = 959). Those deployed to Iraq were significantly more likely to ...

Falls on the outstretched hands are the cause of over 90% of wrist fractures, yet little is known about bone loading during this event. We tested how the magnitude and distribution of pressure over the palm region during a forward fall is affected by foam padding (simulating a glove) and arm configuration, and by the faller's body mass index (BMI) and thickness of soft tissues over the palm reg...

Effective evacuation is critical for safety of occupants. The exiting evacuation systems lack flexibility and don’t consider the distribution of occupants. It is possible to direct occupants to danger areas or cause congestion in certain areas. In this paper, a decentralized evacuation system is proposed to compute the safest path in real time. The system is composed of fire detection sensors, ...