Departament de Matemàtiques
Collections in this community
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Altres [28]
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Articles de revista [2.895]
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Capítols de llibre [186]
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Llibres [27]
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Presentacions [13]
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Reports de recerca [389]
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Working papers [13]
Recent Submissions
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The geometry of Hermitian self-orthogonal codes
(Elsevier, 2021-12-20)
Article
Restricted access - publisher's policyWe prove that if n>k2 then a k-dimensional linear code of length n over Fq2 has a truncation which is linearly equivalent to a Hermitian self-orthogonal linear code. In the contrary case we prove that truncations of linear ... -
Graph polynomials and group coloring of graphs
(2022-05-01)
Article
Open AccessLet A be an Abelian group and let G be a simple graph. We say that G is A-colorable if, for some fixed orientation of G and every edge labeling l:E(G)¿A, there exists a vertex coloring c by the elements of A such that ... -
Early fault detection in the main bearing of wind turbines based on Gated Recurrent Unit (GRU) neural networks and SCADA data
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Article
Open AccessFailures in the main bearings of wind turbines are critical in terms of downtime and replacement cost. Early diagnosis of their faults would lower the levelized cost of wind energy. Thus, this work discusses a gated recurrent ... -
Legibilidad y letras
(2022)
Conference report
Open AccessIn the present, there are different indices that measure the difficulty level of reading a text, i.e. the readability of a text. Different studies have been made on the frequency of occurrence of letters in several languages, ... -
Optimal control of variable-speed wind turbines modeled as Markov jump systems
(2022-07)
Article
Restricted access - publisher's policyThis paper shows the solution for the control problem of operating wind turbines through Markov jump nonlinear systems. The idea is to represent wind speed acting on the turbine blades into modes of Markov chain. The main ... -
Bohr-Sommerfeld quantization of b-symplectic toric manifolds
(2022-03-07)
Research report
Open AccessWe define the Bohr-Sommerfeld quantization via T-modules for a b-symplectic toric manifold and show that it coincides with the formal geometric quantization of [GMW18b]. In particular, we prove that its dimension is given ... -
SARS-CoV2 hospital surveillance and control system with contact tracing for patients and health care workers at a large reference hospital in Spain during the first wave: An observational descriptive study
(John Wiley & sons, 2022-03)
Article
Open AccessBackground and Aims During the first peak of the COVID-19 pandemic, the Preventive Medicine Department and the Occupational Health Department at Hospital Clinic de Barcelona (HCB), a large Spanish referral hospital, developed ... -
b-Structures on Lie groups and Poisson reduction
(2022-02-11)
Article
Restricted access - publisher's policyMotivated by the group of Galilean transformations and the subgroup of Galilean transformations which fix time zero, we introduce the notion of a b-Lie group as a pair where G is a Lie group and H is a codimension-one Lie ... -
Rank axioms and supersimplicity
(2022-02-13)
Research report
Open AccessJust as Lascar’s notion of abstract rank axiomatizes the U rank, we propose axioms for the ranks SUd and SUf , the foundation ranks of dividing and forking. We study the relationships between these axioms. As with superstable, ... -
Universal singular exponents in catalytic variable equations
(2021-08-19)
Article
Restricted access - publisher's policyCatalytic equations appear in several combinatorial applications, most notably in the enumeration of lattice paths and in the enumeration of planar maps. The main purpose of this paper is to show that the asymptotic estimate ... -
Early fault diagnosis strategy for WT main bearings based on SCADA data and one-class SVM
(2022-06-16)
Article
Open AccessTo reduce the levelized cost of wind energy, through the reduction in operation and maintenance costs, it is imperative that the wind turbine downtime is reduced through maintenance strategies based on condition monitoring. ... -
A deep learning pproach for the morphological recognition of reactive lymphocytes in patients with COVID-19 infection
(2022-05-23)
Article
Open AccessLaboratory medicine plays a fundamental role in the detection, diagnosis and management of COVID-19 infection. Recent observations of the morphology of cells circulating in blood found the presence of particular reactive ...
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