Eric Richard Christensen

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iii ABSTRACT The Discrete Event System Specification (DEVS) formalism excels at modeling complex discrete event systems. A framework capable of simulating a DEVS model is presented via Unified Modeling Language (UML) state machines. A set of rules is enumerated for the creation of UML models. Adherence to these rules results in models that are both DEVS and(More)
A multiple toxicity model for the quantal response of organisms is constructed based on an existing bivariate theory. The main assumption is that the tolerances follow a multivariate normal distribution function. However, any monotone tolerance distribution can be applied by mapping the integration region in the n-dimensional space of transforms on the(More)
In a study of the management of obesity 43 patients were randomly assigned to behavior therapy, will power, and no-treatment control groups. The behavioral treatment involved contingency contracting, stimulus control, self-monitoring, energy expenditure, and group reinforcement procedures over an 18-week period. The will power patients were told to do the(More)
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