Robert A. Humphrey

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OBJECTIVE We conducted a retrospective cohort study to determine whether laparoscopic adrenalectomy (LA) is a safe and effective therapy for the management of pheochromocytoma, as compared with open adrenalectomy (OA). METHODS We collected pertinent data on 47 pheochromocytoma resections from 44 patient charts. Perioperative outcomes of 30 LAs were(More)
The design for the Next Linear Collider (NLC) at SLAC is based on two 11.4 GHz linacs operating at an unloaded acceleration gradient of 50 MV/m increasing to 85 MV/m as the energy is increased from 1/2 TeV to 1 TeV in the center of mass[1]. During the past several years there has been tremendous progress on the development of 11.4 GHz (X-band) RF systems.(More)
The design for the Next Linear Collider (NLC) at SLAC is based on two 11.4 GHz linacs operating at an unloaded acceleration gradient of 50 MV/m increasing to 85 MV/m as the energy is increased from 1/2 TeV to 1 TeV in the center of mass[1]. During the past several years there has been tremendous progress on the development of 11.4 GHz (X-band) RF systems.(More)
The acoustic microscopy information presented in this paper was gathered during assessments of COTS, ICs, AND TRANSISTORS for research and new system development programs involving both commercial and military applications. Non-destructive acoustic microscopy inspection is more cost-effective than most sectioning and is effective in detecting some anomalies(More)
To allow easier configuration of Ambisonic surround sound systems different methods of automatically locating loudspeakers have been considered: first, separation measurements using a single microphone and propagation delays; second, angle measurement using a SoundField microphone and amplitude differences; and third, angle measurement using multiple(More)
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