Zobrazeno 1 - 10
of 7 645
pro vyhledávání: '"Bandeira P"'
Autor:
Bandeira, N. S., Chaves, Andrey, de Castro, L. V., Filho, R. N. Costa, Mirzakhani, M., Peeters, F. M., da Costa, D. R.
We present a systematic study of the energy levels of twisted bilayer graphene (tBLG) quantum dots (QD) and rings (QR) under an external perpendicular magnetic field. The confinement structures are modeled by a circular dot-like- and ring-like-shaped
Externí odkaz:
http://arxiv.org/abs/2410.12014
We study the optimization landscape of a smooth nonconvex program arising from synchronization over the two-element group $\mathbf{Z}_2$, that is, recovering $z_1, \dots, z_n \in \{\pm 1\}$ from (noisy) relative measurements $R_{ij} \approx z_i z_j$.
Externí odkaz:
http://arxiv.org/abs/2407.13407
The first paper in this series introduced a new family of nonasymptotic matrix concentration inequalities that sharply capture the spectral properties of very general Gaussian (as well as non-Gaussian) random matrices in terms of an associated noncom
Externí odkaz:
http://arxiv.org/abs/2406.11453
We consider a group synchronization problem with multiple frequencies which involves observing pairwise relative measurements of group elements on multiple frequency channels, corrupted by Gaussian noise. We study the computational phase transition i
Externí odkaz:
http://arxiv.org/abs/2406.03424
The cross-section for the production of an electroweak gauge boson ($G = W^{\pm}, Z^0, \gamma$) at forward rapidities in $pp$ collisions is derived within the color - dipole $S$ - matrix framework. We present the full expressions for the differential
Externí odkaz:
http://arxiv.org/abs/2405.10265
We prove the existence of a positive semidefinite matrix $A \in \mathbb{R}^{n \times n}$ such that any decomposition into rank-1 matrices has to have factors with a large $\ell^1-$norm, more precisely $$ \sum_{k} x_k x_k^*=A \quad \implies \quad \sum
Externí odkaz:
http://arxiv.org/abs/2405.06154
In this study, we delve into the dynamic landscape of machine learning research evolution. Initially, through the utilization of Latent Dirichlet Allocation, we discern pivotal themes and fundamental concepts that have emerged within the realm of mac
Externí odkaz:
http://arxiv.org/abs/2311.03633
Autor:
Maillard, Antoine, Bandeira, Afonso S.
We consider the problem $(\rm P)$ of exactly fitting an ellipsoid (centered at $0$) to $n$ standard Gaussian random vectors in $\mathbb{R}^d$, as $n, d \to \infty$ with $n / d^2 \to \alpha > 0$. This problem is conjectured to undergo a sharp transiti
Externí odkaz:
http://arxiv.org/abs/2310.05787
Autor:
Nadyne Rubin, Eduarda Blanco-Rambo, Marcelo Bandeira Guimarães, Caroline Rosa Muraro, Rose Löbell, Nadja Schröder, Elke Bromberg, Irani Argimon, Eduardo Lusa Cadore, Caroline Pietta-Dias
Publikováno v:
Geriatrics, Gerontology and Aging, Vol 18, Pp 1-8 (2024)
Objectives: To verify the effect of strength, aerobic, and concurrent training on the memory of cognitively preserved older adults. Methods: A randomized controlled clinical trial will be conducted. Sedentary older adults (aged 60 to 75 years) of bot
Externí odkaz:
https://doaj.org/article/e5849793c09c4468bf94aab6b515cdf1
Autor:
Andressa Priebe, Mariana Farias de Souza, Lukas dos Santos Boeira, Letícia de Magalhães Bandeira
Publikováno v:
Revista Thema, Vol 23, Iss 3, Pp 752-761 (2024)
Os medicamentos são fundamentais para a sociedade, proporcionando melhor qualidade de vida para os seres humanos, bem como para os animais. O que se debate atualmente é o descarte desses medicamentos quando eles se tornam resíduos, seja por estare
Externí odkaz:
https://doaj.org/article/64fb448114644354b853f1791104c6c3