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- Anantha M Prasad, Judith D Gardiner, Louis R Iverson, Stephen N Matthews, Matthew Peters
- Global change biology
- 2013

Climate change impacts tree species differentially by exerting unique pressures and altering their suitable habitats. We previously predicted these changes in suitable habitat for current and future climates using a species habitat model (DISTRIB) in the eastern United States. Based on the accuracy of the model, the species assemblages should eventually… (More)

- Judith D. Gardiner, Alan J. Laub, James J. Amato, Cleve B. Moler
- ACM Trans. Math. Softw.
- 1992

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)

- Judith D. Gardiner, Matthew R. Wette, Alan J. Laub, James J. Amato, Cleve B. Moler
- ACM Trans. Math. Softw.
- 1992

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)

- Judith D. Gardiner
- SIAM J. Scientific Computing
- 1997

- J. D. Gardiner, A. J. Laub
- C3P
- 1989

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.

- Judith D. Gardiner
- 2009 DoD High Performance Computing Modernization…
- 2009

This project explores a new mechanism for early detection of Internet disturbances, including both natural and malicious events. We used multiple hidden Markov models to analyze a type of global routing data called Border Gateway Protocol (BGP). Reasonably good discrimination was achieved between quiet periods and disturbances, and some discrimination was… (More)

- Francois Vandenberghe, Mike Barlage, Scott Swerdlin, Judith Gardiner, Ashok Krishnamurthy, Alan Chalker
- 2009 DoD High Performance Computing Modernization…
- 2009

Because tests at Army Test and Evaluation Command (ATEC) ranges can often only be conducted under specific atmospheric conditions, climatologies of each range could be a very useful tool for long-range test planning. Such datasets can provide the probability density function of near-surface wind speed, percent cloud cover, temperature, precipitation,… (More)

- Judith D. Gardiner
- SIAM Review
- 1993

We propose a set of educational competencies for a graduate minor in computational science. Our goal is to reach a consensus on topics that students must understand to successfully use petascale computing.

- Steven I. Gordon, Judith D. Gardiner, Brian Guilfoos
- XSEDE '12
- 2012

One of the keys to the future competitiveness of U. S. industry is the integration of modeling and simulation into the development, design, and manufacturing process. A related challenge is to retrain the current workforce in the use of computational modeling to enable its effective use in the workplace. We review our implementation of a new, computational… (More)