Max R. Sproles has been named vice president and regional office manager of the Washington office of Harland Batholomew and Associates Inc., a planning, engineering and landscape architectural firm.

Dewey C. King has been promoted to executive vice president and general manager of Arinc Research Corp., an Annapolis-based consulting and research firm specializing in systems engineering. In addition, M. C. Duncan was named vice president-aircraft and vehicles division, B. L. Retterer was appointed assistant vice president and director of engineering, and Arnold Pazornik was named assistant vice president and director of contracts.

Michael A. Sicilian has been named assistant vice president of the Smith-Sternau Organization Inc., a merchandising subsidiary of William M. Mercer Inc., an employe benefit consulting firm.

The board of directors of NUSAC Inc., a McLean-based technical service and consulting firm serving the nuclear industry, promoted the following people: David G. Schofield, senior vice president; Wilkins R. Smith, vice president for quality programs and environmental assessments; and Jack E. Pevenstein, vice president for marketing.

Gregory J. Limandt has been named chairman and president of General Electric Information Services Co. The Rockville-headquartered firm provides worldwide remote computing services.

Ira W. Cotton has joined the management and technology consulting firm of Booz, Allen & Hamilton.