The branch-and-bound method consists of the repeated application of a process for splitting a space of solutions into two or more subspaces and adopting a bounding mechanism to indicate if it is worthwhile to explore any or all of the newly created subproblems. For example, suppose we need to solve an integerprogramming (IP) model. A bounding mechanism is a computational technique for determini...

This paper presents a large-scale application of a new approach to simultaneously design and control chemical processes that does not require dynamic programming and a priori assumptions of the disturbance dynamics. The process closed-loop behavior is represented as a state space uncertain model. The robust models are then used to calculate infinite-time horizon bounds on the process stability,...

The Ektachem story starts in 1970 at the Eastman Kodak Co. in Rochester, NY. For some time, Eastman Organic Chemicals had supplied reagents to the clinical laboratory. Al Baitsholts, product manager for a thin-layer chromatographic system of impressive analyte sensitivity, became convinced that some kind of thin-layer format might form the basis for a new approach to routine clinical chemistry ...

A distributed hybrid strategy is outlined for the isolation of faults and disturbances in the Tennessee Eastman Process, which would build on existing structures for distributed control systems, so should be easy to implement, be cheap and be widely applicable. The main emphasis in the paper is on one component of the strategy, a steady state based approach. Results obtained by applying this ap...

En este artículo se propone desnaturalizar y problematizar el concepto de democratización la imagen en historia fotografía mediante análisis construcción hegemónica penetración cultural Eastman Kodak Company hacia fines del siglo xix comienzos xx. A partir aproximaciones teórico-metodológicas los estudios culturales, sociología cultura — atravesadas por reformulaciones teoría marxista clásica—,...

Affine Transformations: So far we have been stepping through the basic elements of geometric programming. We have discussed points, vectors, and their operations, and coordinate frames and how to change the representation of points and vectors from one frame to another. Our next topic involves how to map points from one place to another. Suppose you want to draw an animation of a spinning ball....

This paper presents a methodology for locating sensors in dynamic systems. It aims to maximize Kalman filtering performance by using accuracy as its main performance index. To accomplish this task, both the measurement noise and the observation matrices are manipulated. The method has been applied in two academic case studies and in the Tennessee Eastman Challenge Problem and has shown promisin...

Abstract— In this paper, subspace identification methods are compared regarding their capability to cope with process disturbances occurring in complex plants. The Tennessee Eastman process is considered to be a realistic simulation model of chemical processes. The MOESP, N4SID and ORT methods as well as some of their variants are applied to data gathered from the process while being subject to...