Biography

Dr. Rupsys Petras is currently working as Professor at Aleksandras Stulginskis University, Lithuania. He has completed his Ph.D. in Mathematical Sciences from same University. His main area of interest focuses on Physical Science Engineering, Environmental Sciences, and Biomathematics. His area of expertise includes Dynamical Models of Population Growth, Stochastic Models in Ecology, Modeling of Plant Growth, Mathematical Models in Forestry, and Analytical solution of Theoretical Models. He has published 16 research articles in journals as author/co-author.

Area of Interest:

Mathematics

100%

Applied Mathematics

62%

Probability

90%

Biomathematics

75%

Numerical Analysis

55%

Research Publications in Numbers

Books
0

Chapters
0

Articles
0

Abstracts
0

Selected Publications

Rupsys, P., 2012. On the Use of q-exponential Functions for Developing Stem Profile and Volume Models. Int. J. Biol. Eng., 2: 48-55.
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Rupsys, P., E. Bartkevicius and E. Petrauskas, 2011. A univariate stochastic gompertz model for tree diameter modeling. Trends Applied Sci. Res., 6: 134-153.
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Rupsys, P. and E. Petrauskas, 2011. Analysis of height curves by stochastic differential equations. Int. J. Biomathem., 10.1142/S1793524511001878.
CrossRef |
Petrauskas, E., P. Rupsys and R. Memgaudas, 2011. q-exponential variable-form of a stem taper and volume model for scots pine (Pinus sylvestris L.) in Lithuania. Baltic For., 17: 118-127.
Rupsys, P. and E. Petrauskas, 2010. The bivariate Gompertz diffusion model for tree diameter and height distribution. For. Sci., 56: 271-280.
Direct Link |
Petrauskas, E. and R. Petras, 2010. Investigation of tree diameter and volume increments using stochastic differential equations. Proceeding of the Latest Rends on Systems: 14th WSEAS International Conference on Systems, July 22-24, 2010, Corfu Island, Greece, pp: 561-566.
Petrauskas, E. and R. Petras, 2010. General q-exponential model for tree height, volume and stem profile. Proceeding of the Latest Rends on Systems: 14th WSEAS International Conference on Systems, July 22-24, 2010, Corfu Island, Greece, pp: 555-560.
Petrauskas, E. and R. Petras, 2010. Age-varying bivariate distribution models for growth prediction. Proceeding of the Mathematical Models for Engineering Science: International conference on mathematical models for engineering science (MMES’10), November 30, December 2, 2010, Puerto De La Cruz, Tenerife, pp: 250-255.
Petras, R. and E. Petrauskas, 2010. Quantifying tree diameter distributions with one-dimensional diffusion processes. J. Biol. Syst., 18: 205-221.
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Petras, R. and E. Petrauskas, 2010. Development of q-exponential models for tree height, volume and stem profile. Int. J. Phys. Sci., 5: 2369-2378.
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Rupsys, P. and E. Petrauskas, 2009. Forest harvesting problem in the light of the information measures. Trends Applied Sci. Res., 4: 25-35.
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Rupsys, P., J. Kaminskiene, E. Petrauskas and D. Raskiniene, 2008. On goodness-of-fit tests for tree diameter probality models. Vagos, 81: 122-128.
Rupsys, P., 2008. Time delay stochastic growth laws in single-species population modeling. Advanced topics on mathematical biology and ecology. Proceedings of the 4th WSEAS International Conference on Mathematical Biology and Ecology (MABE’08), January 25-27, 2008, Acapulco, Mexico, pp: 29-34.
Rupsys, P., 2008. Stationary densities and parameter estimation for delayed stochastic logistic growth laws with application in biomedical studies. WSEAS Trans. Biol. Biomed., 5: 117-132.
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Rupsys, P., E. Petrauskas, J. Mazeika and R. Deltuvas, 2007. The gompertz type stochastic growth law and a tree diameter distribution. Baltic Forestry, 13: 197-206.
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Rupsys, P., 2007. The relationships between the diameter growth and distribution laws. WSEAS Trans. Biol. Biomed., 4: 142-161.