Charles Welty

Professor of Computer Science
Computer Science Department
University of Southern Maine
96 Falmouth St.
P.O. Box 9300
Portland, ME 04104-9300

Tel: (207) 780-4240
home page:

Computer and Information Science Dept., University of Massachusetts, Amherst. M.S., 1977. Ph.D., 1979
Electrical Engineering and Computer Science Dept., University of California, Berkeley. B.S. 1967. M.S. 1968.
Positions Held

Professor/Associate Professor, Computer Science Dept., Univ. of Southern Maine, Port;land, ME. 9/79 - present.
Assistant Professor, Computer Science and Statistics Dept., Calif. Polytechnic State Univ., San Luis Obispo, CA. 9/71 - 8/74.
Instructor, Computer Science Dept., Morehouse College, Atlanta, GA. 9/68 - 6/70.

and Presentations
Welty, C.  Usage of and Satisfaction with Online Help vs. Search  Engines for Aid in Software Use. Submitted to ACM sigDOC 2011 Conference (special interest group on Design of  Documentation).   October 3-5, 2011, Tirrenia, Pisa, Italy  ( SIGDOC/fp027-welty updated by ACM.pdf) ( SIGDOC/Usage of and Satisfaction with Online Help vs-2.ppt)
Welty, C. Preference for and Efficacy of Using Online Help vs. Search Engines for Aid with Software Problems. Abstract virtually presented at the 7th International Conference on Technology, Knowledge, and Society, March 25 – 27, 2011, Bilbao, Spain.
Welty, C. (chair), Heines, J.M., Menzin, M. Teaching Computer Scientists to Play Well with Others (panel session), CCSCNE 2010 (Consortium for Computing Sciences in Colleges, Northeast section), Univ. of Hartford, April 16-19, 2010.  Attached and available at well with others Abstract and Positions.pdf
Welty, C.  W(h)ither Help? Presentation, TechMaine UUUG (Usability/User Experience User Group), Sept. 28, 2010, Portland, ME.
Welty, C.  "Undergraduate Graphical User Interface Course", NSF CCLI Showcase, SIGCSE 2000, Austin, TX.  March 9 - 11, 2000.
Welty, C.   "Resources for Undergraduate User Interface Implementation Courses" at CCSCNE '98 (Consortium for Computing in Small Colleges Northeastern Regional Conference, 1998) at Sacred Heart University (Fairfield, CT),  April 24, 1998.  Available at
Welty, C. "SQL as a Metric." Journal of Database Administration, Vol. 1, No. 1 (Summer 1990), pp. 2-10.
Mitchell, J. and Welty, C. "Experimentation in Computer Science: An Empirical View." International Journal of Man-Machine Studies, vol. 29, no. 6 (Dec., 1988),  pp. 613-624.
Welty, C. "Correcting user errors in SQL." International Journal of Man-Machine Studies, vol. 22, no. 4 (April 1985), pp.463-477.
Welty, C. and Stemple, D.W. "Human factors comparison of a procedural and a nonprocedural query language." ACM TODS 6,4 (Dec. 1981), 626-649.
Grants Received

Undergraduate Graphical User Interface Course.  NSF.  July 1999 - July 2001.  Equipment to support a GUI course.  NSF No. DUE - 9950236
Professional Societies

ACM (Association for Computer Machinery)
IEEE (Institute for Electrical and Electronics Engineers) Computer Society
Usability Professionals' Association