Azmy S. Ackleh
Professor and Department Chair
Dr. Ray P. Authement Eminent Scholar Endowed Chair in Computational Mathematics

Contact:
Office: 215 Maxim Doucet
Phone: 337-482-5172
E-mail: ackleh@louisiana.edu
Home page: http://www.ucs.louisiana.edu/~asa5773/

Degrees:
Ph.D. 1993 University of Tennessee at Knoxville
M.S. 1990 University of Tennessee at Knoxville
B.S. 1988 Cumberland College

Statement:
My main research interests are modeling in population and community ecology, long time behavior of solutions to such models, numerical methods, and inverse problems for partial differential equations.

Selected research publications:

• Heavy Episodic Drinking on College Campuses: Does Changing the Legal Drinking Age Make a Difference? (with J. Rasul, R. Rommel, G.M. Jacquez, B. Fitzpatrick, N. Simonson, and R. Scribner), Journal of Studies on Alcohol and Drugs, accepted for publication.
• A Case Study of Green Tree Frog Population Size Estimation by Repeated Capture-Mark-Recapture Method with Individual Tagging (with X. Yang, N. Pal, and J. Carter), Journal of Statistical Computation and Simulation, accepted for publication.
• Stability of a Delay Equation Arising From a Juvenile-Adult Model (with K. Deng), Mathematical Biosciences and Engineering, accepted for publication.
• Stochastic Juvenile-Adult Models with Application to a Green Tree Frog Population (with K. Deng and Q. Huang), Journal of Biological Dynamics, accepted for publication.
• Competitive Exclusion in a Discrete Juvenile-Adult Model with Continuous and Seasonal Reproduction (with R. A. Chiquet), Journal of Difference Equations and Applications, accepted for publication.
• The Use of Surrogate Species in Risk Assessment: Using Life History Data to Safeguard Against False Negatives (with J.E. Banks and J. Stark), Risk Analysis, 30 (2010), 175-182.
• Measuring and Modeling the Seasonal Changes of an Urban Green Treefrog (Hyla cinerea) Population (with J. Carter , L. Cole , T. Nguyen, J. Monte, and C. Pettit), Ecological Modeling, 221 (2010), 281-289.
• Competitive Exclusion in a Discrete Stage-Structured Two Species Model (with P. Zhang), Mathematical Modelling of Natural Phenomenon, 4 (2009), 156-175.
• Ecosystem Modeling of College Drinking: Development of a Deterministic Model for Testing Alcohol Control Policies (with R. Scribner, B.G. Fitzpatrick, G. Jacquez, J. Thibodeaux, R. Rommel, and N. Simonsen), Journal of Studies on Alcohol and Drugs, 70 (2009), 805-821.
• Ecosystem Modeling of College Drinking: Parameter Estimation and Comparing Models to Data (with B.G. Fitzpatrick, S. Scribner, N. Simonsen, and J. Thibodeaux), Mathematical and Computer Modelling, 50 (2009), 481-497.
• A Nonautonomous Juvenile-Adult Model: Well-Posedness and Long-Time Behavior via a Comparison Principle (with K. Deng), SIAM Journal on Applied Mathematics, 69 (2009), 1644-1661.
• Invasion, Disturbance, and Competition: Modeling the Fate of Coastal Plant Populations (with S. Pathikonda, K. H. Hasenstein, and S. Mopper), Conservation Biology, 23 (2009), 164-173.
• The Global Dynamics of a Discrete Juvenile-Adult Model with Continuous and Seasonal Reproduction (with R. Chiquet), Journal of Biological Dynamics, 3 (2009), 101-115.
• Discrete Three-Stage Population Model: Persistence and Global Stability Results (with P. DeLeenheer), Journal of Biological Dynamics, 2 (2008), 415-427.
• Parameter Estimation in a Structured Erythropoiesis Model (with J.J. Thibodeaux), Mathematical Biosciences and Engineering, 5 (2008), 601-616.
• A Monotone Approximation for a Size-Structured Population Model with a Generalized Environment (with K. Deng and J. Thibodeaux), Journal of Biological Dynamics, 1 (2007), 291-304.
• A Three-Stage Discrete-Time Population Model: Seasonal Versus Continuous Reproduction (with Y. Dib and S. Jang), Journal of Biological Dynamics, 1 (2007), 305-319.
• Population estimates of Hyla cinerea (Schneider) (Green Treefrog) in an urban environment (with L. Pham, S. Boudreaux, S. Karhbet, B. Price, J. Carter, and N. Pal), Southeastern Naturalist, 6 (2007), 203-216
• On a Nonlinear Size-Structured Phytoplankton-Zooplankton Aggregation Model (with K. Deng, S. Hu), Dynamics of Continuous, Discrete and Impulsive Systems, Series A, 14 (2007), 265-285.
• Establishing a beachhead: A Stochastic Population Model with an Allee Effect Applied to Species Invasion (with L.J.S. Allen and J. Carter), Theoretical Population Biology, 71 (2007), 290-300.