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Your search keyword '"Baglama, J."' showing total 25 results
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25 results on '"Baglama, J."'

3. Algorithm 827: irbleigs: a MATLAB program for computing a few eigenpairs of a large sparse Hermitian matrix

Author

Baglama, J., Calvetti, D., and Reichel, L.

Subjects
Algorithm, Eigenvalues -- Research, Algorithms -- Research
Abstract

irbleigs is a MATLAB program for computing a few eigenvalues and associated eigenvectors of a sparse Hermitian matrix of large order n. The matrix is accessed only through the evaluation of matrix-vector products. Working space of only a few n-vectors is required. The program implements a restarted block-Lanczos method. Judicious choices of acceleration polynomials make it possible to compute approximations of a few of the largest eigenvalues, a few of the smallest eigenvalues, or a few eigenvalues in the vicinity of a user-specified point on the real axis. irbleigs also can be applied to certain large generalized eigenproblems as well as to the computation of a few nearby singular values and associated right and left singular vectors of a large general matrix. Categories and Subject Descriptors: G.1.3 [Numerical Analysis]: Numerical Linear Algebra; G.4 [Mathematical Software]: documentation General Terms: Algorithms, Documentation Additional Key Words and Phrases: Block Lanczos method, eigenvalue computation, generalized eigenproblem, singular values, polynomial acceleration

Published
2003

9. BIT Numerical Mathematics: Editorial

Author

Åhlander, K., Allen, E., Aptekarev, A. I., Arioli, M., Arnold, M., Asadzadeh, M., Baglama, J., Bailly, C., Baker, C., Bartels, S., Bendali, A., Benzi, M., Berntsson, F., Breda, D., Brunner, H., SERRA CAPIZZANO, Stefano, Cash, J., Chan, R., Chandrasekaran, S., Chang, X. W., Chern, I. L., Crouzeix, M., Van Daele, M., Damhaug, A. C., Davis, T., Davydov, O., Dieci, L., Eriksson, J., Eriksson, L. E., Espelid, T., Estep, D., Fontich, E., Ford, N., Fornberg, B., Foster, L., Frank, J., Gander, W., Garća Palomares, U. M., Giraud, L., Greenbaum, A., Gripenberg, G., Gulliksson, M., Gustafsson, B., Gustafsson, N., Hairer, E., Hanke, M., Heggernes, P., Van Emden Henson, N., Hesthaven, J., Sanz, I. H., Hochbruck, M., Hochstenbach, M., Huckle, T., Kamvar, S., Kaps, P., Karlsen, K. H., Klarbring, A., Knizhnerman, L., Kopotum, K., Korotov, S., Kuijlaars, A., Kværnø, A., Langtangen, H. P., Larsson, E., Lenarduzzi, L., Lewalle, J., R. C., Li, Lin, P., Malyshev, A., Marletta, M., Mazzia, F., Mehl, C., Moore, P., Müller, B., Mørken, K., Neytcheva, M., Niederman, L., Olver, S., Ostrouchov, G., Pareschi, L., Parlett, B. N., Pralet, S., Raghavan, P., Rannacher, R., Runborg, O., Ruuth, S., Sand, J., Saunders, M., Sauter, S., Savaré, G., Shen, W. Z., Sidi, A., Spiteri, R., Steihaug, T., Stenger, F., Stoer, J., Strakoš, Z., and Tang, T.

Subjects
Computational Mathematics, Applied Mathematics, Computer Graphics and Computer-Aided Design, Software
Published
2005

24. Continuous-time predator-prey models with parasites.

Author

Jang SR and Baglama J

Subjects
Animals, Markov Chains, Stochastic Processes, Time Factors, Models, Biological, Parasites physiology, Predatory Behavior physiology
Abstract

We study a deterministic continuous-time predator-prey model with parasites, where the prey population is the intermediate host for the parasites. It is assumed that the parasites can affect the behavior of the predator-prey interaction due to infection. The asymptotic dynamics of the system are investigated. A stochastic version of the model is also presented and numerically simulated. We then compare and contrast the two types of models.

Published
2009
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25. Plankton-toxin interaction with a variable input nutrient.

Author

Jang SR, Baglama J, and Rick J

Subjects
Animals, Models, Biological, Phytoplankton growth & development, Zooplankton growth & development, Phytoplankton drug effects, Toxins, Biological toxicity, Zooplankton drug effects
Abstract

A simple model of phytoplankton-zooplankton interaction with a periodic input nutrient is presented. The model is then used to study a nutrient-plankton interaction with a toxic substance that inhibits the growth rate of plankton populations. The effects of the toxin upon the existence, magnitude, and stability of the periodic solutions are discussed. Numerical simulations are also provided to illustrate analytical results and to compare more complicated dynamical behaviour.

Published
2008
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