21. The " exchange rate " ratio of output to input was a characteristic feature of operational research . 22. He also enjoyed an international reputation throughout the operational research establishments of the armies of US allies. 23. These projects tend to fall within three categories : Health Systems'Readiness, Measurement of Transmission, and Operational research . 24. In 1961 and 1962 he was also visiting professor of operational research at the University of Birmingham. 25. During World War II he served with the Royal Canadian Navy, in the Directorate of Operational Research . 26. In 2006, Cooper was inducted into the hall of fame of the International Federation of Operational Research Societies. 27. Operational research by Peyton-Ward improved weaponry.28. He worked and taught as an actuary and as a mathematician in operational research from 1925 to 1995. 29. He also made a major contribution in World War II advising on military strategy and developing operational research . 30. Venus Initial Station for Operational Research , the human research facility built to study possible methods of terraforming the world.
