Zobrazeno 1 - 10
of 1 198
pro vyhledávání: '"AFONSO S"'
Publikováno v:
Sustainable Futures, Vol 7, Iss , Pp 100193- (2024)
Environmental concerns drive corporate and consumer focus on sustainable packaging. Research explores key factors influencing consumer intent, emphasizing the importance of strategic integration for enhanced purchase intentions and environmental goal
Externí odkaz:
https://doaj.org/article/5e8fecf36f364707aba2d96700412e16
Autor:
Mónica P. S. Ferreira, Afonso S. Gonçalves, Joana C. Antunes, João Bessa, Fernando Cunha, Raúl Fangueiro
Publikováno v:
Polymers, Vol 16, Iss 10, p 1345 (2024)
In recent decades, the interest in responsive fibrous structures has surged, propelling them into diverse applications: from wearable textiles that adapt to their surroundings, to filtration membranes dynamically altering selectivity, these structure
Externí odkaz:
https://doaj.org/article/5e9dccbee26b4eea9fee7d57e17ea392
Publikováno v:
AI, Vol 3, Iss 3, Pp 601-622 (2022)
Technological problems related to everyday work elements are real, and IT professionals can solve them. However, when they encounter a problem, they must go to a platform where they can detail the category and textual description of the incident so t
Externí odkaz:
https://doaj.org/article/7cd7ba889d4c4877864c7f1666352d06
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
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
Publikováno v:
Brazilian Journal of Political Economy, Vol 22, Iss 4, Pp 651-669 (2020)
ABSTRACT This paper examines the recent evolution of the Brazilian public domestic debt and interprets it in light of the confidence crisis literature. The analysis of the recent developments in the Brazilian public domestic debt market shows that th
Externí odkaz:
https://doaj.org/article/6c48aa1ffe2c4401b3cc74d30970b573
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
We consider the problem $(\mathrm{P})$ of fitting $n$ standard Gaussian random vectors in $\mathbb{R}^d$ to the boundary of a centered ellipsoid, as $n, d \to \infty$. This problem is conjectured to have a sharp feasibility transition: for any $\vare
Externí odkaz:
http://arxiv.org/abs/2307.01181