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Conference papers

Data-Driven Diffusion-Based Super-Resolution for Improvement of Reduced-Order Model Predictions in Fluid Dynamics 2025 28th International Conference on Information Fusion (FUSION) · 2025

R. F. S. Sousa, R. M. Velho, N. L. de Matos, A. M. A. Cortês, G. F. Barros, A. L. G. A. Coutinho.

Lead-author work: a diffusion-based generative model trained to super-resolve reduced-order fluid-dynamics predictions, recovering fine structure that the cheap solver smears away. Derived from research at NACAD/UFRJ.

IEEE Xplore · DOI ↗
Improving accuracy of parametric surrogate model for turbidity currents using diffusion-based super-resolution CILAMCE 2024 — XLV Iberian-Latin-American Congress on Computational Methods in Engineering · 2024

A. Cortês, R. F. da Silva e Sousa, R. M. Velho, G. F. Barros, F. A. Rochinha, A. L. G. A. Coutinho.

A diffusion-based super-resolution model applied to a parametric surrogate for turbidity-current simulation, recovering fine structure the cheap solver loses.

DOI ↗
Boundary Conditions for Hydrothermal Operation Planning Problems: The Infinite-Horizon Approach CNMAC 2024 — Brazilian National Congress on Computational and Applied Mathematics · 2024

B. F. P. da Costa, A. O. Calixto, R. F. S. Sousa, R. T. Figueiredo, D. D. J. Penna, L. S. Khenayfis, A. M. R. Oliveira.

Boundary conditions that close the planning horizon honestly for the Brazilian hydrothermal dispatch problem, using an infinite-horizon formulation to avoid the artefacts of an arbitrarily-cut finite window.

DOI ↗

Technical reports

Energy planning and environmental constraints: impact of multiple water uses on the electric-energy business Technical report · 2023

Research group, 9th Workshop on Mathematical Solutions for Industrial Problems (CeMEAI — USP).

A study of the São Francisco River Basin operation under competing water uses, modelled in Julia with SDDP.jl plus environmental constraints, quantifying their impact on the electric-energy business.

Cambridge MIIR ↗
Periodic-Horizon Stochastic Optimization Technical report · 2022

B. F. P. da Costa, A. Calixto, R. T. Figueiredo, D. D. Penna, R. F. da Silva e Sousa, et al.

A periodic-horizon formulation of multistage stochastic dispatch. Treating the operational year as a cycle rather than a finite, arbitrarily-terminated window, allows the end-of-horizon distortions to disappear.