Jerry Zimmermann

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Utilizing a database that became available due to the requirements of FIN 45, we examine the informational role of accounting disclosures on warranties. First, since firms use warranty policies as a business strategy to promote their products, a warranty reserve may serve two roles: an informational signal regarding product quality as well as a contingent(More)
Many aircraft safety professionals are concerned that evolving FCC rules may foster the introduction of new wireless products that may cause harmful electromagnetic interference (EMI) to aeronautical radio systems. To address these concerns, the NASA office of space communications and chief spectrum managers assembled a multidisciplinary team from NASA(More)
The performance of high-power inverters strongly depends on the characteristics of the underlying semiconductor device. The design of such devices is typically a compromise between on-state losses and switching losses. The idea analyzed in this paper is to combine two GCT devices into one single wafer, one switching-optimized GCT structure and one(More)
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