Michael L. Harrison

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Mean dynamics describe the convergence to self-confirming equilibria of selfreferential systems under discounted least squares learning. Escape dynamics recurrently propel away from a self-confirming equilibrium. In a model with a unique self-confirming equilibrium, the escape dynamics make the government discover too strong a version of the natural rate(More)
Silicon carbide (SiC) JFET devices exhibiting normally-off characteristics have become commercially available, enabling their adoption into power supply products. In this paper, the synchronous rectification characteristics of SiC JFETs are investigated and their overall performance in single phase power factor correction (PFC) circuits is measured.(More)
INTRODUCTION While experimental natural orifice transluminal endoscopic surgery (NOTES) sigmoid colectomies have been reported, pure NOTES anastomoses are restricted by the limited reach of commercially available circular staplers. MAGNAMOSIS is a set of self-orienting magnetic rings that can be delivered endoluminally throughout the colon to generate a(More)
BACKGROUND It has been five years since the Institute of Medicine (IOM) report, Crossing the Quality Chasm, proposed systemwide changes to transform our health care system. What progress has been made? What lessons have been learned? How should we move forward? METHODS Semistructured telephone interviews were conducted with 16 health care providers and(More)
The use of trans-oral laser techniques for the resection of head and neck carcinomas has increased exponentially over the last four decades. Inadvertent laser damage to the patient or operating theatre staff is an acknowledged risk. However, no data exist to verify the safety margin of commonly employed precautions. The aims of this study was to assess the(More)
Esophageal reconstruction presents a significant clinical challenge in patients ranging from neonates with long-gap esophageal atresia to adults after esophageal resection. Both gastric and colonic replacement conduits carry significant morbidity. As emerging organ-sparring techniques become established for early stage esophageal tumors, less morbid(More)
Background The Alberta Stroke Program Early Computed Tomography Score (ASPECTS) is an established 10-point quantitative topographic computed tomography scan score to assess early ischemic changes. We performed a non-inferiority trial between the e-ASPECTS software and neuroradiologists in scoring ASPECTS on non-contrast enhanced computed tomography images(More)
For many applications it is not enough for a system to perform correctly under ideal circumstances. Systems benefit from robust and survivable designs that can withstand faults and degrade gracefully as faults occur. System topologies that resist component failures are certainly attractive in many applications. We demonstrate the effectiveness of a(More)