In Memory of Professor Igor Ushakov: In Memory of Our Colleague and Friend

This paper is a tribute of deep respect and memory of a wonderful person, friend, scientist Igor Ushakov. Given his brief biography, described his research and creative interests, bibliography of selected works in the field of reliability theory, optimal redundancy, risk analysis. Name of professor Igor Ushakov is established to all specialists in reliability. During many years he was one of key and well-known persons in reliability theory. The aim of this paper-short information about Ushakov: as scientist-initiator of new directions in reliability theory, as professor in famous universities in USSR and USA, as author of technical and not only technical books, poems, as friend for many participants of this Symposium. Big attention in the paper pays to Igor activity during lasts years -- interaction of specialists from different countries by "Gnedenko e-Forum"- an informal International Association of professionals in the field of reliability, where Igor was founfounderder and president.