Matemàtiques i Informàtica: Recent submissions
Now showing items 281-300 of 1007
Preferred Spatial Frequencies for Human Face Processing Are Associated with Optimal Class Discrimination in the Machine
Psychophysical studies suggest that humans preferentially use a narrow band of low spatial frequencies for face recognition. Here we asked whether artificial face recognition systems have an improved recognition performance ...
On the classification of Togliatti systems
In [MeMR], Mezzetti and Mir\'{o}-Roig proved that the minimal number of generators μ(I) of a minimal (smooth) monomial Togliatti system I⊂k[x0,¿,xn] satisfies 2n+1≤μ(I)≤(n+d−1n−1) and they classify all smooth minimal ...
El llegat de Galton, Pearson Fréchet i d'altres: com mesurar i interpretar l'associació estadística
Presentem en tres parts els conceptes de correlació i d'associació estadística, començant per la noció de correlació de Galton, millorada per Pearson. Utilitzem com a il. lustració les dades clàssiques de Galton i Pearson ...
Parametrization of abelian K-surfaces with quaternionic multiplication
We prove that the Abelian $K$-surfaces whose endomorphism algebra is a rational quaternion algebra are parametrized, up to isogeny, by the $K$-rational points of the quotient of certain Shimura curves by the group of their ...
Artificial Intelligence for a Fair, Just, and Equitable World
From the 1970s onward, we started to dream of the leisure society in which, thanks to technological progress and consequent increase in productivity, working hours would be minimized and we would all live in abundance. We ...
Agricultural Harvester Sound Classification Using Convolutional Neural Networks And Spectrograms
The use of deep learning in agricultural tasks has recently become popular. Deep learning networks have been used for analyzing images of crops, identifying paddy areas, distinguishing sick plants from healthy ones, to ...
Privacy-Constrained Biometric System for Non-cooperative Users
With the consolidation of the new data protection regulation paradigm for each individual within the European Union (EU), major biometric technologies are now confronted with many concerns related to user privacy in biometric ...
Progressions aritmètiques de tots colors
Aquest article explica, a un nivell divulgatiu, diversos resultats sobre progressions aritmètiques formades per nombres naturals. En la primera part parlem sobre el teorema de Van der Waerden per a progressions aritmètiques, ...
On the computation of reducible invariant tori on a parallel computer
We present an algorithm for the computation of reducible invariant tori of discrete dynamical systems that is suitable for tori of dimensions larger than 1. It is based on a quadratically convergent scheme that approximates, ...
Minimal set of binomial generators for certain Veronese 3-fold projections
The goal of this paper is to explicitly describe a minimal binomial generating set of a class of lattice ideals, namely the ideal of certain Veronese 3 -fold projections. More precisely, for any integer $d \geq 4$ and any ...
Zeros of random functions generated with de Branges kernels
We study the point process given by the set of real zeros of random series generated with orthonormal bases of reproducing kernels of de Branges spaces. We find an explicit formula for the intensity function in terms of ...
Non-rigid alignment pipeline applied to human gait signals acquired with optical motion capture systems and inertial sensors
An accurate gait characterization is fundamental for diagnosis and treatment in both clinical and sportive fields. Although several devices allow such measurements, the performance comparison between the acquired signals ...
Any three eigenvalues do not determine a triangle
Despite the moduli space of triangles being three dimensional, we prove the existence of two triangles which are not isometric to each other for which the first, second and fourth Dirichlet eigenvalues coincide, establishing ...
Identifying causative mechanisms linking early-life stress to psycho-cardio-metabolic multi-morbidity: The EarlyCause project
Introduction: Depression, cardiovascular diseases and diabetes are among the major non-communicable diseases, leading to significant disability and mortality worldwide. These diseases may share environmental and genetic ...
Anàlisi de missió d'un satèl·lit artificial
Cap a mitjans de l'any 1995 l'Agència Espacial Europea (ESA), dins el seu programa científic, té previst el llançament de satèl·lit SOHO (Solar and Heliopheric Observatory) en un projecte conjunt amb l'Agència Espacial ...
‘t Hooft bundles on the complete flag threefold and moduli spaces of instantons
In this work we study the moduli spaces of instanton bundles on the flag twistor space $F:=F(0,1,2)$. We stratify them in terms of the minimal twist supporting global sections and we introduce the notion of (special) 't ...
Mitigating annotation shift in cancer classification using single image generative models
Artificial Intelligence (AI) has emerged as a valuable tool for assisting radiologists in breast cancer detection and diagnosis. However, the success of AI applications in this domain is restricted by the quantity and ...
Dynamic changes in microvascular flow conductivity and perfusion after myocardial infarction shown by image-based modeling
Background Microcirculation is a decisive factor in tissue reperfusion inadequacy following myocardial infarction (MI). Nonetheless, experimental assessment of blood flow in microcirculation remains a bottleneck. We sought ...
Chern degree functions
We introduce Chern degree functions for complexes of coherent sheaves on a polarized surface, which encode information given by stability conditions on the boundary of the $(\alpha, \beta)$-plane. We prove that these ...
When we talk about older people in HCI, who are we talking about? Towards a 'turn to community' in the design of technologies for a growing ageing population
This paper addresses a number of challenges HCI designers and researchers deal with when designing digital technologies for older people. We conducted a 5-year research-through-design study, which combined ethnography, ...
