Dr. Ahlgren received the B.S. in Engineering from Trinity College, the M.S. in Electrical Engineering from Tulane University, and the Ph.D. in Electrical Engineering from The University of Michigan, Ann Arbor.   He began teaching at Trinity College in 1973 and served as department chairperson from 1990-1999.  He also served as the Director and Host of the Trinity College Fire-Fighting Home Robot Contest.  His scholarly interests lie in robotics, modeling and simulation, engineering design, and broadband communications amplifiers.  He retired from teaching in 2014.

• Cronvich, J.A., Ahlgren, D.J., and Burch, G.E. "Amplitude Probability Densities of Electrocardiograms." American Heart Journal 75, no.4 (April, 1968):510-17.
• Ahlgren, D.J. "Rayleigh Scattering." Computer Program Descriptions, IEEE Transactions on Antennas and Propagation (January 1973).
• Ahlgren, D.J. "Performance Limitations and Synthesis of Matched Broadband Unilateral Amplifiers with Field-Effect Transistor Active Elements." International Journal of Electronics 48, no.6 (1980): 497-506.
• Ahlgren, D.J. "Performance Limitations of Matched Shunt Compensated Broadband Cascode Amplifiers." IEEE Trans. on Circuits and Systems CAS-29, no.2 (February 1982): 119-23.
• Ahlgren, D.J. and Ku, W.H. "Gain-Bandwidth Properties of a Class of Matched Feedback Amplifiers,." IEEE Trans. Microwave Theory and Techniques MTT-35, no.4 (April 1987): 361-69.
• Ahlgren, D.J., Lewis, B.F., Stein, A. "A Model of Human Immunodeficiency Virus Transmission." Aids and Public Policy Vol.4, no.2 (July 1989): 83-91.
• Ahlgren, D.J., Stein, A. "Dynamic Models of the AIDS Epidemic," Simulation Vol. 54, no. 1 (January 1990): 7-20.
• Ahlgren, D. J., Gorny, M. K., Stein, A. "Model-Based Optimization of Infectivity Parameters: A Study of the Early Epidemic in San Francisco," Journal of Acquired Immune Deficiency Syndromes Vol. 3, no. 6 (June 1990): 631-643.
• M. Bovard, M. Gillette, T. de Lanerolle, B. Marinkovic, K. Nepal, A. Tamrakar, N. Trinh, P. Votto, D. Ahlgren, “Design Evolution of the Trinity College IGVC Robot ALVIN,” J. Robotic Systems, Special Issue on the Intelligent Ground Vehicle Competition, 21, 9, 2004, pp. 461-470.
• I. M. Verner and D. J. Ahlgren, “Robot Contest as a Laboratory for Experiential Engineering Education.” J. Educational Resources in Computing (JERIC) special issue on robotics in undergraduate education, ACM Press, New York, 4, 2, July, 200554.
• I. M. Verner, and D. J. Ahlgren. “Robot Projects and Competitions as Education Design Experiments.” Intelligent Automation and Soft Computing Journal, Special Issue on Educational Robotics, 13, 1, 2007, pp. 57-68.
• I. M. Verner, D. J. Ahlgren, D. Miller, “Robotics Olympiads: A New Means to Facilitate Conceptualization of Knowledge Acquired in Robot Projects.” Presented at American Association for Artificial Intelligence Spring Symposium on educational robotics, Stanford University, March, 2007.
• D. J. Ahlgren and I. M. Verner. “Building Self-Efficacy in Robotics Education.” Presented at ASEE Annual Conference, Honolulu, June 2007. (Paper in conference proceedings).
• J. T. Heaton, J. M. Kowaleski, R. Bermejo, H. P. Zeigler, D. J. Ahlgren, T. A. Hadlock. “A System for Studying Facial Nerve Function in Rats through Simultaneous Monitoring of Eye Lid Closure and Whisker Movements.” To be presented at 2007 Society for Neuroscience Annual Meeting, San Diego, November 2007.

• Fellow, KISS Institute of Practical Robotics, 2005
• National Collegiate Inventors and Innovators Alliance Grant, $15,000, 2000
• IEEE Region I Award for contributions to Electrical Engineering Education, 1993
• Campus Visitor, Alfred P. Sloan Foundation New Liberal Arts Program, 1990-91
• Sabbatical Leave grant, Alfred P. Sloan Foundation, 1988-89
• Session chair at:  International Conference on Engineering Education, Gliwice, Poland 2005,  Valencia, Spain 2003, University of Manchester (UMIST), England 2002, and Ostrava, Czech Republic 1999; World Automation Congress, Budapest, 2006 and Mini-Symposium on Learning and Robotics, Seville 2004; American Society of Engineering Education Annual Conferences, CoEd Division session on educational robotics, 2007 (Honolulu), 2000 (St. Louis) and 1999 (Charlotte).
• Guest editor (with I. M. Verner), of special issue on Educational Robotics, Intelligent Automation and Soft Computing Journal, 2007.
• Co-Moderator (with I. Verner, S. Richards, D. Pack), of professional development workshop “Effective Practices in Robotics Education”, 2005 American Society of Engineering Education Annual Conference, Portland, Oregon, June, 2005 and 2004 American Society of Engineering Education Annual Conference, Salt Lake City.
• International Program Committee: 4th International Symposium on Autonomous Mini-robots for Research and Edutainment, Buenos Aires, October 2007; World Automation Congress, Budapest 2006; Microelectronic Systems Education Conference, San Jose 1990.
• Organizer and leader of professional workshops at ASEE Annual Conferences:   (with I. Verner, D. Miller, J. Peipmeier) “Robot Projects:  Building Robots and Promoting Understanding”,  2007 (Honolulu);  (with I. Verner, S. Richards, D. Pack) “Effective Practices in Robotics Education”, 2005 (Portland) and 2004 (Salt Lake City).