Matthew A. Levy

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BACKGROUND Physicians have long provided care free of charge or at a reduced rate as a professional courtesy to other physicians and their families. We conducted a stratified national mail survey to assess the extent to which this practice has changed in recent years. METHODS Using the American Medical Association's 1991 master list of physicians, we(More)
Yes, the lucky 13th column is here, and it is a guest column written by J. Goldsmith, M. Levy, and M. Mundhenk on the topic of limited nondeterminism---classes and hierarchies derived when nondeterminism itself is viewed as a quantifiable resource (as it indeed is!).Coming up in the Complexity Theory Column in the very special 100th issue of <i>SIGACT(More)
OF THESIS A SURVEY OF LIMITED NONDETERMINISM IN COMPUTATIONAL COMPLEXITY THEORY Nondeterminism is typically used as an inherent part of the computational models used in computational complexity. However, much work has been done looking at nondeterminism as a separate resource added to deterministic machines. This survey examines several different approaches(More)
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