* Electronic Data Systems of Plano, Tex., won a seven-year, $93.7 million contract from the Arkansas Department of Human Services to continue managing the state's Medicaid program. The contract will be administered out of the company's Herndon office. EDS has been managing the Medicaid program in Arkansas since 1985. Under the contract, EDS will provide help-desk support, training seminars, on-site visits and Web functions.

* Anteon International, a Fairfax government technology contractor, won a five-year contract worth up to $15.5 million from the U.S. Army Medical Command to support the National Vaccine Healthcare Center Network. Under the contract, Anteon will provide support in information technology services, program development and management, health education, and administrative services.

* Rivermine Software, a Fairfax telecommunications management software company, named Mark Logan chief executive. Before joining Rivermine, Logan served as vice president and general manager of PeopleSoft's CRM business unit. Logan replaces Bryant Dunetz, who has served as chief executive since the company's inception in 2001. Dunetz is one of four company co-founders and will remain chairman of the board.

* Avatech Solutions, a Baltimore design and engineering systems integration company, named Scott Harris president and chief operating officer. Before joining Avatech, Harris was responsible for all aspects of operations at Washington Cable Supply. Harris replaces Eric L. Pratt, who will remain at Avatech and focus on mergers and acquisitions.

Compiled from reports by Washington Post staff writers, PR Newswire and Business Wire.