Matemàtiques i Informàtica: Envíos recientes
Mostrando ítems 321-340 de 1007
Data synthesis and adversarial networks: A review and meta-analysis in cancer imaging
Despite technological and medical advances, the detection, interpretation, and treatment of cancer based on imaging data continue to pose significant challenges. These include inter-observer variability, class imbalance, ...
In-vivo Measurement of Wrist Movements During the Dart-Throwing Motion Using Inertial Measurement Units
Background: This study investigates the dart-throwing motion (DTM) by comparing an inertial measurement unit-based system previously validated for basic motion tasks with an optoelectronic motion capture system. The DTM ...
The Weak Vopênka Principle for definable classes of structures
We give a level-by-level analysis of the Weak Vopěnka Principle for definable classes of relational structures ( WVP ), in accordance with the complexity of their definition, and we determine the large-cardinal strength ...
Arithmetically Cohen-Macaulay bundles on cubic threefolds
We study arithmetically Cohen-Macaulay bundles on cubic threefolds by using derived category techniques. We prove that the moduli space of stable Ulrich bundles of any rank is always non-empty by showing that it is birational ...
Accurate computations up to break-down of quasi-periodic attractors in the dissipative spin-orbit problem
We consider a Celestial Mechanics model: the spin–orbit problem with a dissipative tidal torque, which is a singular perturbation of a conservative system. The goal of this paper is to show that it is possible to maintain ...
Composition operators acting on weighted Dirichlet spaces
We study composition operators acting on weighted Dirichlet spaces. We obtain estimates for the essential norm, describe the membership in Schatten-Von Neumann ideals and characterize the composition operators with closed range.
Cohomological localizations and set-theoretical reflection
Homological localizations of spaces and spectra have been a fundamental tool in algebraic topology since the decade of 1970, especially in the setting of chromatic homotopy. However, it is unknown whether the existence of ...
Mathematics in Catalonia: 1996-2002
The aim of this article is to present the main conclusions of the Report on research in Catalonia for the area of mathematics**. The report was prepared by Joaquim Bruna, Marta Sanz, Joan de Solà-Morales and the author of ...
Un critère d'extension des foncteurs définis sur les schémas lisses
Soeint $k$ un corp sde caractéristique zéro et $X$ une variété algébrique sur $k$. On sait, d'après le théorème de résolution des singularités d'Hironaka ([Hi1]), que l'on peut résoudre les singularités de $X$ , c'est-à-dire ...
Anillos conmutativos cuyas extensiones enteras verifican la propiedad de 'going-between'
Let A and B denote commutative rings. We say that ACB satisfies going-between if iliven prime ideals...
Lessons learned from supplementing archaeological museum exhibitions with virtual reality
Archaeological excavations provide us with important clues about the past. Excavated artefacts represent an important connection to civilisations that no longer exist and help us understand some of their customs, traditions ...
Mujeres que estudian informática y matemáticas: quiénes son y por qué son tan pocas
Cuesta encontrar estudiantes de informática que sean mujeres. En la Universidad de Barcelona, apenas son un 15 %. En el Día Internacional de las Niñas en las Tecnologías de la Información y la Comunicación, las autoras les ...
Energy and discrepancy of rotationally invariant determinantal point processes in high dimensional spheres
We study expected Riesz s-energies and linear statistics of some determinantal processes on the sphere $\mathbb{S}^{d}$. In particular, we compute the expected Riesz and logarithmic energies of the determinantal processes ...
Time-consistent investment and consumption strategies under a general discount function
In the present paper, we investigate the Merton portfolio management problem in the context of non-exponential discounting, a context that gives rise to time-inconsistency of the decision-maker. We consider equilibrium ...
On the Design of an ECOC-Compliant Genetic Algorithm
Genetic Algorithms (GA) have been previously applied to Error-Correcting Output Codes (ECOC) in state-of-the-art works in order to find a suitable coding matrix. Nevertheless, none of the presented techniques directly take ...
On Morita weak equivalences of simplicial algebraic theories and operads
Generalizing a classical result of Dwyer and Kan for simplicial categories, we characterize the morphisms of multi-sorted simplicial algebraic theories and simplicial coloured operads which induce a Quillen equivalence ...
Localizations of abelian Eilenberg-Mac Lane spaces of finite type
We prove that every homotopical localization of the circle $S^{1}$ is an aspherical space whose fundamental group $A$ is abelian and admits a ring structure with unit such that the evaluation map End $(A) \rightarrow A$ ...
Differential Replication for Credit Scoring in Regulated Environments
Differential replication is a method to adapt existing machine learning solutions to the demands of highly regulated environments by reusing knowledge from one generation to the next. Copying is a technique that allows ...
Building uncertainty models on top of black-box predictive APIs
With the commoditization of machine learning, more and more off-the-shelf models are available as part of code libraries or cloud services. Typically, data scientists and other users apply these models as ''black boxes'' ...
Cage Active Contours for image warping and morphing
Cage Active Contours (CACs) have shown to be a framework for segmenting connected objects using a new class of parametric region-based active contours. The CAC approach deforms the contour locally by moving cage's points ...
