John R. Buhrman

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Data mining meta-optimization aims to find an optimal data mining model which has the best performance (e.g., highest prediction accuracy) for a specific dataset. The optimization process usually involves evaluating a series of configurations of parameter values for many algorithms, which can be very time-consuming. We propose an agent-based framework to(More)
A series of +Gz impact tests were performed on the Armstrong laboratory vertical decelerator with human and manikin subjects wearing various helmet-mounted systems. The resulting data were used to quantify the effects on human dynamic response of varying helmet mass and seat acceleration as well as to provide comparisons to previously established safe(More)
The objective of the test program was to study the effect of parametric changes in helmet inertial properties on the biodynamic response of human volunteers subjected to +Gz impact accelerations. Test data was used to drive a computer model (DYNAMAN) to estimate the loads and torques in the neck during impact. Currently, only seven of eleven test cells(More)
Helmet-mounted systems (HMS), such as night vision goggles and helmet-mounted displays, are designed to enhance pilot performance. Using HMS, however, may also affect pilot safety by increasing the potential for neck injury during ejection due to the increase in dynamic forces generated in the cervical spine as a result of the change in helmet inertial(More)
For more than thirty years the Armstrong Laboratory (AL) has studied the response of human volunteers and human surrogates to impact accelerations. Data from these studies form a national resource which should be made available to biodynamics model builders and safety researchers everywhere. Recently AL joined with the National Highway Transportation Safety(More)
I OMB No. 0704-0188 The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or(More)
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