A steady-state computer simulation was developed for the
Chemico Urea Process which is owned and operated by Reichhold
Chemicals, Inc., St. Helens, Oregon. The DISCOSSA executive system
was used to process information input and output and to automatically
converge the complex recycle calculations in this process.
The models developed in...
The asymptotic convergence acceleration method used in steady
state process simulation is examined in detail, and a criterion is
developed to decide when it should be applied. The criterion is related
to the rate of convergence of each variable and does not require any
prejudgment of its tolerance level by...
Most flexible manufacturing systems (FMS) presently in use have generated only modest productivity increases in proportion to capital in vested in the process, or they have not been favorably reviewed when compared to the investment costs of other improved manufacturing systems. This thesis presents a simulator program which will assist...
Given k terminal pairs (s₁,t₁),(s₂,t₂),..., (s[subscript k],t[subscript k]) in an edge-weighted graph G, the k Shortest Vertex-Disjoint Paths problem is to find a collection P₁, P₂,..., P[subscript k] of vertex-disjoint paths with minimum total length, where P[subscript i] is an s[subscript i]-to-t[subscript i] path. As a special case of the...
The mapped area is part of the middle Deschutes Basin of central Oregon, which lies in the northwestern corner of the High Lava Plains physiographic province, between the Cascade and Ochoco Mountains. It is underlain by Cenozoic lavas, tuffs and sediments of continental origin. The oldest rocks in the sequence...
Full Text:
AN ABSTRACT OF THE THESIS OF
DONALD EUGENE STENSLAND