. . . EXHIBIT 21.1 SUBSIDIARIES <Table> MPSI Systems Limited.........................................................................U.K. Corporation MPSI Systems K.K.........................................................................Japanese Corporation Shanghai MPSI Software Inc................................................................Chinese Corporation Management Planning Systems, Inc.........................................................Oklahoma Corporation INACTIVE CORPORATIONS MPSI do Brasil.............................................................................Brazil Corporation MPSI Australia Pty. Ltd.................................................................Australia Corporation MPSI China Inc...........................................................................Delaware Corporation MPSI Systems Pte. Ltd...................................................................Singapore Corporation MPSI Surveys Inc.........................................................................Oklahoma Corporation MPSI Systems Canada Inc..................................................................Canadian Corporation MPSI Systems GmbH..........................................................................German Corporation Quest Systems International Inc..........................................................Delaware Corporation BRANCH OFFICES Seoul, South Korea........................................................Branch of MPSI Systems Pte. Ltd. Johannesburg, South Africa......................................Branch of Management Planning Systems Inc. (d/b/a MPSI Africa Inc.) </Table>