Diem's Final Failure
Diem's Final Failure

Author: Philip E. Catton

Publisher:

Published: 2002

Total Pages: 320

ISBN-13:

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"Catton treats the Diem government on its own terms rather than as an appendage of American policy. Focusing on the decade from Dien Bien Phu to Diem's assassination in 1963, he examines the Vietnamese leader's nation-building and reform efforts - particularly his Strategic Hamlet Program, which sought to separate guerrilla insurgents from the peasantry and build grassroots support for his regime. Catton's evaluation of the collapse of that program offers fresh insights into both Diem's limitations as a leader and the ideological and organizational weaknesses of his government, while his assessment of the evolution of Washington's relations with Saigon provides new insight into America's growing involvement in the Vietnamese civil war.".

Human Pilot Dynamics with Various Manipulators
Human Pilot Dynamics with Various Manipulators

Author: Duane T. McRuer

Publisher:

Published: 1966

Total Pages: 60

ISBN-13:

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The purpose of the experimental efforts is to explore on a preliminary basis the limiting characteristics of the human operator's 'actuator' or neuromuscular system dynamics as affected by the manipulator. The effects of three manipulators (pressure, free-moving, and spring-restrained) on system performance and the human operator's describing function are presented for three controlled elements and two high bandwidth forcing functions. Describing function differences are primarily in the phase, i.e., the effective time delay at high-frequency and an effective phase lag at very low frequencies. Generally the mean square error and describing function results for the spring-restrained manipulator were intermediate to those for the free-moving (no spring) and the pressure (infinite spring) manipulators. The pressure controller gave lower mean square error and less effective time delay than the free-moving controller. In addition, the effective phase lag at very low frequencies was either the same as or larger than that for the free-moving control.