Matemàtiques i Informàtica: Recent submissions
Now showing items 201-220 of 1007
Sequential Models for Endoluminal Image Classification
Wireless Capsule Endoscopy (WCE) is a procedure to examine the human digestive system for potential mucosal polyps, tumours, or bleedings using an encapsulated camera. This work focuses on polyp detection within WCE videos ...
Integration operators between Hardy spaces on the unit ball of $\mathbb{C}^n$
We completely describe the boundedness of the Volterra type operator $J_g$ between Hardy spaces in the unit ball of $\mathbb{C}^n$. The proof of the one dimensional case used tools, such as the strong factorization for ...
Invariant manifolds near $L_{1}$ and $L_{2}$ in the Quasi-bicircular Problem
The quasi-bicircular problem (QBCP) is a periodic time-dependent perturbation of the Earth– Moon restricted three-body problem (RTBP) that accounts for the effect of the Sun. It is based on using a periodic solution of ...
A Conversational Agent that Learns to be Aligned with the Moral Value of Respect"
Videogame developers typically conduct user experience surveys to gather feedback from users once they have played. Nevertheless, as users may not recall all the details once finished, we propose an ethical conversational ...
Triangles rectangles de costats racionals
En un manuscrit anònim grec, datat entre Euclides i Diofant, hom posa de manifest que l'àrea del triangle rectangle de costat 9, 40, 41 val 5·36 i, per tant, que l'àrea del rectangle és igual a 5 El problema de caracteritzar ...
Progressive Attenuation of the Longitudinal Kinetics in the Common Carotid Artery: Preliminary in Vivo Assessment
Longitudinal kinetics (LOKI) of the arterial wall consists of the shearing motion of the intima-media complex over the adventitia layer in the direction parallel to the blood flow during the cardiac cycle. The aim of this ...
Taylor expansion of the density in a stochastic heat equation
We prove a general result on asymptotic expansions of densities for families of perturbed Wiener functionals. As an application, we consider a stochastic heat equation driven by a space-time white noise εW˙ t,x, ε ∈ (0, ...
Dels fissurers de lleves als falcons peregrins
A finals dels anys 70 i començament dels 80 va haver-hi una revolució tècnica en el mon de l'escalada. La introducció dels fissurers de lleves que va disparar el nivell de dificultat assolible en escalada lliure en roca i ...
Uncertainty-Based Human-in-the-Loop Deep Learning for Land Cover Segmentation
In recent years, different deep learning techniques were applied to segment aerial and satellite images. Nevertheless, state of the art techniques for land cover segmentation does not provide accurate results to be used ...
Sheaves of E-infinity algebras and applications to algebraic varieties and singular spaces
ABSTRACT. We describe the $E$-infinity algebra structure on the complex of singular cochains of a topological space, in the context of sheaf theory. As a first application, for any algebraic variety we define a weight ...
A Cartan-Eilenberg approach to Homotopical Algebra
In this paper we propose an approach to homotopical algebra where the basic ingredient is a category with two classes of distinguished morphisms: strong and weak equivalences. These data determine the cofibrant objects by ...
Stratifications parfaites et théorie des poids
In this paper, we emphasize Deligne's theory of weights, in order to prove that some stratifications of algebraic varieties are perfect. In particular, we study in some detail the Bialynicki-Birula's stratifications and ...
$2S_4 * Q_8$-extensions in characteristic 3
We present an explicit construction of the complete family of Galois extensions of a field $K$ of characteristic 3 with Galois group the central product $2S_4 * Q_8$ of a double cover $2S_4$ of the symmetric group $S_4$ ...
Lorentz-Shimogaki and Boyd theorems for weighted Lorentz spaces
We prove the Lorentz-Shimogaki and Boyd theorems for the spaces $\Lambda^{p}_{u}(w)$. As a consequence, we give the complete characterization of the strong boundedness of $H$ on these spaces in terms of some geometric ...
Planar Radial Weakly-Dissipative Diffeomorphisms
We study the effect of a small dissipative radial perturbation acting on a one parameter family of area preserving diffeomorphisms. This is a specific type of dissipative perturbation. The interest is on the global effect ...
A converse to the Schwarz lemma for planar harmonic maps
A sharp version of a recent inequality of Kovalev and Yang on the ratio of the $(H^1)^\ast$ and $H^4$ norms for certain polynomials is obtained. The inequality is applied to establish a sharp and tractable sufficient ...
Entorn de comunicació d’unitats d’informació social
Requeriments tècnics: PHP 5.3, MySQL amb motor d’emmagatzematge InnoDB, HTML5. Un dels autors ha sol·licitat romandre anònim
Integration with respect to local time and Ito's formula for smooth nondegenerate martingales
We show an It o's formula for nondegenerate Brownian martingales Xt = R t 0 us dWs and functions F(x, t) with locally integrable derivatives in t and x. We prove that one can express the additional term in It o's s formula ...
Uncertainty-based Rejection Wrappers for Black-box Classifiers
Machine Learning as a Service platform is a very sensible choice for practitioners that wantto incorporate machine learning to their products while reducing times and costs. However, to benefit theiradvantages, a method ...
On sensitivity in bipartite Cayley graphs
Huang proved that every set of more than half the vertices of the $d$-dimensional hypercube $Q_d$ induces a subgraph of maximum degree at least $\sqrt{d}$, which is tight by a result of Chung, Füredi, Graham, and Seymour. ...
