Zobrazeno 1 - 10
of 49 853
pro vyhledávání: '"Gouveia, A"'
Measurements from astroparticle experiments, such as the 2017 flare associated with the source TXS 0506+056, indicate that blazars act as multi-messenger (MM; radiation and neutrinos) factories. Theoretically, the particle acceleration mechanisms res
Externí odkaz:
http://arxiv.org/abs/2411.10210
Autor:
Morão, Pedro, Santinha, Joao, Forghani, Yasna, Loução, Nuno, Gouveia, Pedro, Figueiredo, Mario A. T.
Deep learning (DL) models in medical imaging face challenges in generalizability and robustness due to variations in image acquisition parameters (IAP). In this work, we introduce a novel method using conditional denoising diffusion generative models
Externí odkaz:
http://arxiv.org/abs/2410.23835
Publikováno v:
12th International Conference on Urban History (2014)
Project Lx Conventos aims to study, in a systematic and integrated manner, the impact of the dissolution of religious orders in the dynamics of urban transformation in nineteenth century Lisbon. After the liberal revolution and the civil war, in the
Externí odkaz:
http://arxiv.org/abs/2410.19455
This paper studies the number of centers and limit cycles of the family of planar quartic polynomial vector fields that has the invariant algebraic curve $(4x^2-1)(4y^2-1)=0.$ The main interest for this type of vector fields comes from their appearan
Externí odkaz:
http://arxiv.org/abs/2410.15354
We numerically investigate a crucial parameter for understanding particle acceleration theory via turbulence-induced magnetic reconnection: the particle acceleration time. We examine particles accelerated either during the jet's dynamic evolution or
Externí odkaz:
http://arxiv.org/abs/2410.13071
In this paper, we study the number of isolated crossing periodic orbits, so-called crossing limit cycles, for a class of piecewise smooth Kolmogorov systems defined in two zones separated by a straight line. In particular, we study the number of cros
Externí odkaz:
http://arxiv.org/abs/2410.09281
Knowledge refactoring compresses a logic program by introducing new rules. Current approaches struggle to scale to large programs. To overcome this limitation, we introduce a constrained optimisation refactoring approach. Our first key idea is to enc
Externí odkaz:
http://arxiv.org/abs/2408.11530
Autor:
Gouveia, João, Wiebe, Amy
Yannakakis' theorem relating the extension complexity of a polytope to the size of a nonnegative factorization of its slack matrix is a seminal result in the study of lifts of convex sets. Inspired by this result and the importance of lifts in the se
Externí odkaz:
http://arxiv.org/abs/2407.14764
We consider Mabuchi rays of toric K\"ahler structures on symplectic toric manifolds which are associated to toric test configurations and that are generated by convex functions on themoment polytope, $P$, whose second derivative has support given by
Externí odkaz:
http://arxiv.org/abs/2407.05860
Autor:
Gouveia, Inês Pinto, Sheikh, Ahmad T., Shoker, Ali, Fahmy, Suhaib A., Esteves-Verissimo, Paulo
Computational offload to hardware accelerators is gaining traction due to increasing computational demands and efficiency challenges. Programmable hardware, like FPGAs, offers a promising platform in rapidly evolving application areas, with the benef
Externí odkaz:
http://arxiv.org/abs/2406.18117