Stephen Oxnard

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This paper exposes, and analyzes the validity of, a novel hybrid acoustic modeling system created through complementary assimilation of 3D geometric and 2D numerical modeling techniques. It is demonstrated that multiple 2D Finite Difference Time Domain schemes may be employed to simulate low-frequency sound wave propagation throughout a simplistic 3D(More)
This research examines the validity of utilising a 2D multiplane FDTD acoustic model to simulate low frequency sound propagation as part of a hybrid room impulse response (RIR) synthesis system. Analytic results, pertaining to the comparison of simulated low frequency multiplane RIRs with both practical RIR measurements and 3D FDTD simulated RIRs,(More)
During a two-year period, 21 premature infants (weight at birth, 680 to 2,340 gm) had operative closure of patent ductus arteriosus (PDA). The first 6 infants had ligation performed in the operating room (OR); the subsequent 15 had ligation in the Newborn Intensive Care Unit. There were no immediate postoperative deaths. Two infants died from problems(More)
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