William B. Day
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An agent-oriented multiagent planning system Open
this paper describes a multiagent planning system, MuPAC, that formulates cooperative plans efficiently. It contains three features: meta-level planning, breakable and unbreakable action representations, and an integrated agent screening a…
The process allocation in parallel interpretation of logic programs (abstract only) Open
One of the most appealing characteristics of logic programs is the natural and abundant non-determinism of execution. This non-determinism allows a non-conventional computer to pursue highly parallel computation. Considerable effort has be…
Asymptotic expansions in nonlinear rotordynamics Open
This paper is an examination of special nonlinearities of the Jeffcott equations in rotordynamics. The immediate application of this analysis is directed toward understanding the excessive vibrations recorded in the LOX pump of the SSME du…
Nonlinear rotordynamics analysis Open
The special nonlinearities of the Jeffcott equations in rotordynamics are examined. The immediate application of this analysis is directed toward understanding the excessive vibrations recorded in the LOX pump of the SSME during hot firing…
Singular asymptotic expansions in nonlinear rotordynamics Open
During hot firing ground testing of the Space Shuttle's Main Engine, vibrations of the liquid oxygen pump occur at frequencies which cannot be explained by the linear Jeffcott model of the rotor. The model becomes nonlinear after accountin…
Asymptotic expansions of eigenvalues and eigenfunctions of random boundary value problems Open
An asymptotic procedure is developed for calculating the eigenvalues and eigenfunctions of linear boundary-value problems which may contain random coefficients in the operator. The corresponding asymptotic series for the solution of a seco…