To: Shamim Naqvi. Department Head, Network Computing Research From: Dave Warner MD Director, Institute for Interventional Informatics Re: Yuh-Jye Chang. This is a letter of recommendation for Yuh-Jye Chang It has been my great fortune to work with Yuh-Jye for the past 18mo's. I am a medical neuro-scientist working in the field of human-computer interfacing. My work required a universal interface rapid prototyping tool to test, evaluate and implement medically significant interface technology applications in the areas of quantitative human performance assessment, intra-operative monitoring, remote monitoring, telemedicine and expressional interface systems for persons with severe disabilities. Yuh-Jye 's depth of knowledge in computer science and programming skills have helped us revolutionize practice methods in those areas. My working relationship with Yuh-Jye was a very positive experience, I was his direct project supervisor, responsible for tactical decisions and strategic directives. Yuh-Jye maintained my level of awareness of the realistic options at optimal levels thus ensuring smooth and continuous progress throughout the project. Yuh-Jye demonstrates a strong grasp of the current best methods of developing software systems and also maintains a close relationship to "the problem" to be solved. Yuh-Jye is highly self motivated and very talented. He is thorough in accomplishing required tasks and maintains a diligent perspective of the "state of the system" he is developing. Yuh-Jye is someone who is not intimidated by a challenge. He is thoughtful in pursuing "the best" solution. Yuh-Jye is a compassionate caring human being. His choice of projects indicates a sense of strong social responsibility. He has a great personality and a good sense of humor. He works well with his peers as well as on his own. It is with great pleasure I give Yuh-Jye my HIGHEST recommendation David J. Warner M.D. Director of Medical Communications & CIO, Mindtel, Syracuse NY Director, Institute for Interventional Informatics, San Diego CA davew@npac.syr.edu www.pulsar.org