Document Type



Master of Science (MS)


Please see currently inactive department below.


Industrial Engineering

First Advisor's Name

Martha A. Centeno

First Advisor's Committee Title

Committee Chair

Second Advisor's Name

Ronald Giachetti

Third Advisor's Name

Shih-Ming Lee

Date of Defense



The purpose of this research was to characterize a response surface with respect to the changes made to the input variables of an emergency room system. Response Surface Methodology (RSM) was used to identify the behavior of the response variable with respect to the changes made to the input variable. Several factors were examined for relevancy and significance for the purpose of experimentation. The findings of this research revealed that one factor (nurses) was very significant to the performance measures (time in the system). However, the interaction between the other factors also played an important role. It was determined that a linear regression is not useful in predicting the assessed value of time in the system in emergency rooms. Non-linear models need to be explored. A series of production rales were derived. These production rales can be used in a variety of situations where a decision on how to modify model inputs needs to be made.




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