Closed iterative calculus

An Illustrated Situation Calculus Abstraction for Iterative Explanatory Diagnosis

The H∞−calculus and sums of closed operators

We develop a very general operator-valued functional calculus for operators with an H∞−calculus.We then apply this to the joint functional calculus of two sectorial operators when one has an H∞calculus. Using this we prove theorem of Dore-Venni type on sums of sectorial operators and apply our results to the problem of Lp−maximal regularity. Our main assumption is the R-boundedness of certain s...

A Closed Contour of Integration in Regge Calculus

The analytic structure of the Regge action on a cone in d dimensions over a boundary of arbitrary topology is determined in simplicial minisuperspace. The minisuperspace is defined by the assignment of a single internal edge length to all 1-simplices emanating from the cone vertex, and a single boundary edge length to all 1-simplices lying on the boundary. The Regge action is analyzed in the sp...

Iterative algorithms for performance evaluation of closed network models

A number of nonlinear programming algorithms are proposed to obtain the approximate solutions for nonproduct form multiclass queueing network models, as well as priority queueing networks. Using sensitivity analysis, we develop an efficient iterative technique for closed queueing networks. We compare the approximate solutions obtained from our approach with the global balance solution. Examples...

Closed-loop Identification of Restricted Complexity Models Using Iterative Refinement

A novel technique for closed-loop sytem identification of reduced-order models is presented. The method arrives at a process model and its corresponding compensator in an iterative fashion by introducing a series of step changes at the manipulated variable/setpoint. The bias introduced into the identification data set by the closed-loop system, coupled with a control-relevant prefilter, yields ...