Description of the project: "RESEARCH THEMES: ROBUST CONTROL; DEVELOPMENT OF ALGORITHMS FOR ANALYSIS/SYNTHESIS OF CONTROL SYSTEMS; SOFTWARE TOOLBOXES. RESULTS: EXTENSION OF POSITIVITY THEORY; STABILITY RADIUS FOR POLYNOMIAL SYSTEMS; FACTORIZATION OF RATIONAL MATRICES; ROBUSTNESS OF HAMILTONIAN SYSTEMS; STABILITY OF PERIODIC SYSTEMS; TIME/FREQUENCY DOMAIN METHODS FOR DELAY SYSTEMS. RESULTS CONTAINED IN 4 MONOGRAPHIES (JOHN WILEY, GORDON AND BREACH, BIRKHAUSER, KLUWER) AND 40 PAPERS IN ICI JOURNALS. "