Rosãngela de Fátima Sviercoski

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Orientou

Produções bibliográficas

• SVIERCOSKI, R. F. ; Efendiev, Y. ; MOHANTY, B. P. . Upscaling the Coupled Water and Heat Transport in the Shallow Subsurface. WATER RESOURCES RESEARCH , v. 54, p. 1-18, 2018.

• SVIERCOSKI, R. F. ; Travis, B.J. ; EGGERT, K. . Description of data reanalysis of daily discharge and gauge height over the Amazon River Basin. AIP CONFERENCE PROCEEDINGS , v. 1773, p. 110013-110024, 2016.

• SELLIER, J.M. ; SVIERCOSKI, R.F. ; DIMOV, I. . On the Wigner Monte Carlo method coupled to pseudopotential models. Journal of Computational and Applied Mathematics , v. 293, p. 217-222, 2015.

• SVIERCOSKI, R. F. ; Popov, P. ; MARGENOV, S. . An analytical coarse grid operator applied to a multiscale multigrid method. Journal of Computational and Applied Mathematics , v. 287, p. 207-219, 2015.

• SVIERCOSKI, R.F. ; Efendiev, Y. ; Mohanty, B. ; YUAN, Y. J. . Upscaling the coupled water flow and heat transfer in the subsurface - Comparison between numerical and field data. AIP CONFERENCE PROCEEDINGS , v. 1684, p. 030100-1-030100-12, 2015.

• SVIERCOSKI, R.F. ; MARGENOV, S. . Displacement Decomposition ACO Based Preconditioning of FEM elasticity systems. AIP CONFERENCE PROCEEDINGS , v. 1561, p. 112-121, 2013.

• SVIERCOSKI, R.F. . An analytical effective tensor and its approximation properties for upscaling flows through generalized composites. Advances in Water Resources , v. 33, p. 728-739, 2010.

• SVIERCOSKI, R.F. ; WARRICK, A. W. ; WINTER, C. L. . Two-scale analytical homogenization of Richards' equation for flows through block inclusions. Water Resources Research , v. 45, p. W05403, 2009.

• SVIERCOSKI, R.F. ; Popov, P. ; Travis, B.J. . Zeroth and first-order homogenized approximations to nonlinear diffusion through block inclusions by an analytical approach. Computer Methods in Applied Mechanics and Engineering , v. 198, p. 2260-2271, 2009.

• SVIERCOSKI, R.F. ; WINTER, C. L. ; WARRICK, A. W. . Analytical Approximation for the generalized Laplace's Equation with Step Function Coefficient. SIAM JOURNAL ON APPLIED MATHEMATICS , v. 68, p. 1268-1281, 2008.

• SVIERCOSKI, R.F. ; TRAVIS, B. J. . Analytical Effective Coefficient and First-Order Approximation to Linear Darcy's Law through Block Inclusions. Lecture Notes in Computer Science , v. 4818, p. 267-274, 2008.

• SVIERCOSKI, R.F. ; Travis, Bryan J. ; Hyman, James M. . Analytical effective coefficient and a first-order approximation for linear flow through block permeability inclusions. Computers & Mathematics with Applications (1987) , v. 55, p. 2118-2133, 2008.

• SVIERCOSKI, R.F. . Matemática Aplicada às Ciências Agrárias: Análise de Dados e Modelos. 1. ed. Viçosa: Editora UFV, 2008. v. 1. 334p .

• SVIERCOSKI, R. F. . Teaching Mathematics towards Precision Agriculture Through Data Analysis and Models. In: 15th International Conference on Precision Agriculture, 2022, Minneapolis. Proceedings of the 15th International Conference on Precision Agriculture, 2022. v. 1. p. 1-12.

• SVIERCOSKI, R.F. ; MARGENOV, S. . A Multiscale Multilevel Algorithm using Analytical Coarse Operator Applied to Bone Tissue Modeling. In: SIAM MEETING, 2014. Mathematics in the Industry - edited by A. Slavova, 2015. p. 90-102.

• SVIERCOSKI, R. F. . Review on Analytical Approximation for the Generalized Laplace?s Equation and Applications in Multiscale Modeling. In: 7th Annual Meeting of SIAMBG, 2012, Sofia. BGSIAM'12 Proceedings. Sofia, 2012. v. 1. p. 125-135.

• SVIERCOSKI, R.F. ; TRAVIS, B. J. . Analytical Effective Coefficient for Flow Equations. In: Third International Conference Multiscale Materials Modeling, 2006, Freiburg. Proceedings of the Third International Conference Multiscale Materials Modeling, 2006. p. 888-888.

• SVIERCOSKI, R.F. ; MARGENOV, S. . A Hybrid Multiscale Multigrid Approach by Incorporating Analytical Results. In: 4th anual SIAM meeting of Bulgarian section, 2009, Sofia. Proceedings of the 4th annual meeting of the Bulgarian section of the SIAM. Sofia: Demetra LTD, 2009. v. 1. p. 111-116.

• SVIERCOSKI, R.F. ; WINTER, C. L. ; WARRICK, A. W. . Multiscale Analytical Solutions and Homogenization of n-dimensional Generalized Elliptic Equations. In: Workshop in Multiscale Analysis - MFO, 2005, Oberwolfach. Numerical Upscaling:Theory and Applications. Oberwolfach: Oberwolfach Reports-OWR, 2005. p. 37-40.

• SVIERCOSKI, R. F. . The Mathematics Applied to Problems of Multiple Scales in Geosciences. 2024. (Apresentação de Trabalho/Seminário).

• SVIERCOSKI, R. F. . The Mathematics Applied to Problems of Multiple Scales in Geosciences. 2024. (Apresentação de Trabalho/Seminário).

• SVIERCOSKI, R. F. . Teaching Mathematics towards Precision Agriculture Through Data Analysis and Models. 2022. (Apresentação de Trabalho/Conferência ou palestra).

• SVIERCOSKI, R. F. . Upscaling the Coupled System of Water Flux and Heat Exchanges near the Soil Subsurface ? towards Coupling with Atmospheric Processes. 2022. (Apresentação de Trabalho/Seminário).

• SVIERCOSKI, R. F. . The Analysis of the Problem of Multiple Scale Applied to the Coupled System of Water Flux and Heat Exchanges near the Soil Subsurface. 2021. (Apresentação de Trabalho/Seminário).

• SVIERCOSKI, R.F. . O Problema de Múltipla Escala Aplicado ao Sistema de Fluxos de Água e Calor na Subsuperfície do Solo. 2019. (Apresentação de Trabalho/Seminário).

• SVIERCOSKI, R.F. . A Multiscale Multilevel Algorithm using Analytical Operator Applied to Bone Tissue Modeling. 2013. (Apresentação de Trabalho/Congresso).

• SVIERCOSKI, R.F. . New Results on Upscaling Block Permeability for Two-Phase Flows through Generalized Composites by Analytical Means. 2008. (Apresentação de Trabalho/Simpósio).

• SVIERCOSKI, R.F. . Zeroth and First-order Homogenized Approximations to Two-Phase Flows by an Analytical Approach. 2008. (Apresentação de Trabalho/Simpósio).

• SVIERCOSKI, R.F. . Upscaling Flow through Block Permeability Inclusions by an Analytical Approach. 2008. (Apresentação de Trabalho/Conferência ou palestra).

• MILLER, S. ; SVIERCOSKI, R.F. ; TRAVIS, B. J. ; EGGERT, K. . Reanalysis of Data from River Discharge and Gauge Heght from the Amazon Basin. 2007. (Apresentação de Trabalho/Conferência ou palestra).

• SVIERCOSKI, R.F. . New Results in Upscaling Linear and Nonlinear Darcy's Law for Block Permeability Inclusions by an Analytical Approach.. 2007. (Apresentação de Trabalho/Seminário).

• SVIERCOSKI, R.F. . New Results in Upscaling Linear and Nonlinear Generalized Diffusion Systems by an Analytical Approach.. 2007. (Apresentação de Trabalho/Seminário).

• SVIERCOSKI, R.F. ; WINTER, C. L. ; WARRICK, A. W. . An Explicit form for a n-Dimensional Homogenized Tensor. 2004. (Apresentação de Trabalho/Congresso).

Outras produções

Projetos de pesquisa

• 2009 - 2014

  Fast Semi-Analytic Multiscale Methods for Elliptic Problems - FastMM, Descrição: The goal of this research is to merge state of the art developments in homogenization theory with multilevel discretization and solution techniques for elliptic equations. Complex multiscale problems are integral part of modeling and numerical simulations in a number of engineering, environmental and biomedical sciences. These problems have physical phenomena in hierarchical structures with multiple, poorly separated length scales. This can result in very large discretizations, which often require advanced supercomputing equipment. Today?s supercomputers, however, allow a limited number of high fidelity simulations. We propose to develop fast semi-analytic methods for multiscale simulations of elliptic systems, when the media has poor scale separation. The key idea is to incorporate analytical approximation of fine-scale local solutions into multilevel methods. These solutions, currently developed for scalar elliptic equation, have been used to approximate both the cell solution of classical homogenization as well as to compute upscaled tensor coefficients. By incorporating those in multilevel iterations on can achieve considerable computational savings compared to state of the art numerical multiscale techniques. The approximations to the fine-scale cell solution will allow to implement both efficient and accurate prolongation operators from coarse to fine levels, as well as coarsening strategies involving the analytical effective tensor coefficient. The procedure will then be extended to the elasticity operator, targeting biomedical applications, such as simulations of bone tissue, relevant to osteoporosis disease. Similar procedure can be also applied for field scale environmental problems, such as carbon sequestration. The expected transfer of knowledge in the area of multiscale methods will add to the host?s current efforts in biomedical modeling and simulations. The proposed research also coincides with long-term goals of the host institution, I. , Situação: Concluído; Natureza: Pesquisa. , Integrantes: Rosangela de Fátima Sviercoski - Coordenador., Financiador(es): União Europeia - Remuneração.

• 2009 - 2012

  Predictive Modeling of Thermally Driven Hydrologic Fluxes for Land and Atmosphere Interactions Across Space and Time Scales/NSF, Descrição: This project concerns the development and validation of a multiscale modeling framework for the coupled system describing soil moisture and heat interactions in a shallow soil profile, capable of predicting upscaled soil-hydrologic fluxes under different hydro-climatic conditions. The targeted problem is of practical interest as accurate assessments of spatial (point, field, fetch, region) and temporal (minute, hour, day, month, year) variations of soil moisture and infiltration/evaporation fluxes are critical for many environmental, agricultural, hydrologic, weather and climate prediction applications and global climate change in a broader sense. Fine-scale numerical simulations are prohibitively expensive for large-scale applications. The demand for mathematical models that take into account spatial and temporal scales for the shallow soil are now-a-days more imperative given that: (a) the critical role that such processes play in the global water and energy balance; (b) the fact that the interplay between spatial and temporal scales in the near surface region is not well understood, (c) more data from air- and space-borne sensors are becoming available at certain times of the day for parameterizations and interpretation of modeling efforts. Thus, multiscale approaches leading to a better understanding of near surface complex processes will have a direct impact on accurate predictions of soil moisture and heat exchanges at different scales, and into global water cycle. Moisture near the soil surface is primarily influenced by precipitation and evaporation that are strongly coupled in a nonlinear fashion. Currently, existing models are limited to solving the fine-scale version of this highly nonlinear and coupled water and vapor phase system, without addressing the various spatial and temporal scales involved. A decisive scientific contribution is a predictive multiscale model development for an accurate assimilation of a key boundary layer applicable to land and. , Situação: Concluído; Natureza: Pesquisa. , Alunos envolvidos: Doutorado: (3) . , Integrantes: Rosangela de Fátima Sviercoski - Integrante / Binayak Mohanty - Coordenador / Yalchin Efendiev - Integrante., Financiador(es): The National Science Foundation - Remuneração.

• 2002 - 2005

  Mathematical Models for Prediction of Soil Moisture from Local to Global Scales, using Radar Images, Descrição: Projeto de Doutorado. , Situação: Concluído; Natureza: Pesquisa. , Integrantes: Rosangela de Fátima Sviercoski - Coordenador.

• 1996 - 1998

  Melhoria na Qualidade de Ensino do Curso de Agronomia, Descrição: Objetivo de implantar novas metodologias de ensino para um conjunto de disciplinas eleitas, incluindo Matemática. , Situação: Concluído; Natureza: Pesquisa. , Integrantes: Rosangela de Fátima Sviercoski - Integrante / Edward Madureira Brasil - Coordenador., Número de produções C, T & A: 1

• 1996 - 1998

  Uma Abordagem Matemática para Problemas Agronômicos dos Cerrados, Descrição: Objetivo de difundir o uso de modelos matemáticos na pesquisa e prática agronômicas; a Matemática é trazida e explicada dentro do contexto das Ciências Agrárias, trabalhando com dados e modelos pertinentes à área, a fim de despertar no aluno o interesse pela disciplina, ao mesmo tempo que coloca à sua disposição instrumentos adequados e imprescindíveis tanto ao seu aprendizado quanto a aplicações futuras.. , Situação: Concluído; Natureza: Pesquisa. , Integrantes: Rosangela de Fátima Sviercoski - Coordenador., Número de produções C, T & A: 1

Projetos de desenvolvimento

• 2017 - Atual

  Mechatronic Telescopic system for the integration of nano and micro satellites, Descrição: Mathematical modeling and development by means of parameterization of material and design for a mechanical embedding system into nano and micro satellites. , Situação: Em andamento; Natureza: Desenvolvimento. , Integrantes: Rosangela de Fátima Sviercoski - Coordenador / Georgi Yankov - Integrante.

• 2017 - Atual

  Mechatronic Telescopic system for the integration of nano and micro satellites, Descrição: Mathematical modeling and development by means of parameterization of material and design for a mechanical embedding system into nano and micro satellites. , Situação: Em andamento; Natureza: Desenvolvimento. , Integrantes: Rosangela de Fátima Sviercoski - Coordenador / Georgi Yankov - Integrante.

• 2017 - 2018

  Mechatronic Telescopic system for the integration of nano and micro satellites, Descrição: Mathematical modeling and development by means of parameterization of material and design for a mechanical embedding system into nano and micro satellites. Innovation for Start-Up Company - BG16RFOP002-1.002-0068-C01-. , Situação: Concluído; Natureza: Desenvolvimento. , Integrantes: Rosangela de Fátima Sviercoski - Coordenador / Georgi Yankov - Integrante.

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