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A software package has been developed to solve efficiently the Sylvester-type matrix equation <italic>AXB<supscrpt>T</supscrpt></italic> + <italic>CXD<supscrpt>T</supscrpt></italic> = <italic>E</italic>. A transformation method is used which employs the QZ algorithm to structure the equation in such a way that it can be solved columnwise by a back… (More)

This paper documents a software package for solving the Sylvester matrix equation (1) <italic>AXB<supscrpt>T</supscrpt></italic> + <italic>CXD<supscrpt>T</supscrpt></italic> = <italic>e</italic>
All quantities are real matrices; <italic>A</italic> and <italic>C</italic> are <italic>m</italic> x <italic>n</italic>; <italic>B</italic> and… (More)

- K van Dijk, S Lewallen, M Chirambo, J Gardiner, B Hoar, J Lindley +2 others
- The British journal of ophthalmology
- 1999

AIM
To develop and test a practical visual function assessment for use in developing countries.
METHODS
Using focus group discussions and interviews with eyecare workers and low vision specialists in Malawi, 13 questions related to visual characteristics of activities of daily living were designed. Patients presenting to an eye clinic were recruited and… (More)

A parallel algorithm for solving the algebraic Riccati equation is described and its performance on an Intel iPSC/d5 is reported. Three variations of the matrix sign function algorithm are compared. The best one showed efficiencies of about 60 percent on large problems.

- Jason Stamp, Jennifer Stinebaugh, Richard Jensen, Karina Munoz-Ramos, Vince Urias, Bryan Richardson +9 others
- 2013

• Energy surety and microgrids o Lead Design Engineer for the DOE/DoD SPIDERS microgrid project (2010-present) o Microgrid design for military facilities (2008-present) • Cyber security of automation and control systems in electric power o Threat analysis for infrastructure systems (2004-present) o Cyber security modeling and design for automation and… (More)

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