SYSTEMS ENGINEERING; TECHNICAL ASSISTANCE WITH COMPUTER-BASED COMMUNICATION, SENSOR, SIGNAL PROCESSING AND CONTROL SYSTEMS; COMPUTER SYSTEMS INTEGRATION, NAMELY, INTEGRATION OF COMPUTER-BASED COMMUNICATION, SENSOR, SIGNAL PROCESSING AND CONTROL SYSTEMS; AND PROVIDING TECHNICAL SUPPORT SERVICES TO OTHERS FOR ACQUIRING COMPUTER-BASED COMMUNICATION, SENSOR, SIGNAL PROCESSING AND CONTROL SYSTEMS