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for the U.S. Army Tank and Automotive Center in Warren, Michigan, involved the design of vehicle suspensions that could respond to vibrations caused by variations in ground height. Louis J. Cote, a colleague at Purdue, was a major collaborator on the project. MASC undertook many more projects until 1968. In 1962, Professors Bogdanoff and Kozin founded (and were co-directors) of the Center for Applied Stochastics, which was partially supported by a grant from the National Science Foundation (NSF). Principal investigators associated with the center were Wilbert M. Gersch, Anshel J. Schiff, and Arnold L. Sweet, all professors in the School of Aeronautics, Astronautics, and Engineering Sciences at Purdue. During this time, undergraduate and graduate courses were developed to introduce students to the concepts of probability and statistics. Research topics included stochastic differential equations, stochastic stability, metal fatigue, soil subsidence, system identification, column buckling, heat transfer, and fluid turbulence.

Jack was associate head of what was then called the School of Aeronautics, Astronautics, and Engineering Sciences from 1967 to 1971 and was head of the school from 1971 to 1972. Subsequently, he was a professor in the school, which was renamed the School of Aeronautics and Astronautics, until his retirement in 1986. In his 36 years at Purdue, Jack was instrumental in building the engineering and science program into one of the strongest programs in the world. He also made extraordinary contributions to the program in aeronautics and astronautics, which is now also one of the very best in the world.

Jack’s research led to significant contributions to computer modeling of fatigue and cumulative damage. He identified critical energy-related engineering problems of national significance and developed several pioneering theoretical studies of earthquake response for the world’s largest fossil fuel power plant. The work was supported by a multi-million-dollar grant from NSF and the Tennessee Valley Authority. Jack was the principal investigator (PI), with Hsu Lo as co-PI, on the first phase of the project; he was PI, with Henry Yang as co-PI, on the second phase. He also introduced the use of stochastic methods of analysis for solving large-scale, complex engineering problems. As was stated

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