Approved Accepted

I want to thank the members of my committee, Dr. Randolph Reddick and Dr. Benjamin Bates. Much graditude goes to Dr. Benjamin Bate ~ who led me through the design, and statistical calculations and interpretations. Special acknowledgment goes to my thesis chainnan Dr. Roger Saathoff, who spent a great deal of time editing and guiding me through the final stages of the project And I owe special thanks to all the members of my family: Don, Wilma, and Mark LeNoir for their love and confidence in me. 11 TABLE OF CONTENT