Bayesian K-SVD for H and E blind color deconvolution. Applications to stain normalization, data augmentation and cancer classification

This work was supported by project PID2019-105142RB-C22 funded by MCIN / AEI / 10.13039 / 501100011033, Spain, and project P20_00286 funded by FEDER /Junta de Andalucía-Consejería de Transformación Económica, Industria, Conocimiento y Universidades, Spain. The work by Fernando Pérez-Bueno was sponsored by Ministerio de Economía, Industria y Competitividad , Spain, under FPI contract BES-2017-081584 . Funding for open access charge: Universidad de Granada / CBUA, Spain.Stain variation between images is a main issue in the analysis of histological images. These color variations, produced by different staining protocols and scanners in each laboratory, hamper the performance of computer-aided diagnosis (CAD) systems that are usually unable to generalize to unseen color distributions. Blind color deconvolution techniques separate multi-stained images into single stained bands that can then be used to reduce the generalization error of CAD systems through stain color normalization and/or stain color augmentation. In this work, we present a Bayesian modeling and inference blind color deconvolution framework based on the K-Singular Value Decomposition algorithm. Two possible inference procedures, variational and empirical Bayes are presented. Both provide the automatic estimation of the stain color matrix, stain concentrations and all model parameters. The proposed framework is tested on stain separation, image normalization, stain color augmentation, and classification problems.CBUAJunta de Andalucía-Consejería de Transformación Económica, Industria, Conocimiento y UniversidadesFamily Process Institute BES-2017-081584Universidad de GranadaEuropean Regional Development FundMinisterio de Economía, Industria y Competitividad, Gobierno de EspañaAgencia Estatal de Investigación P20_0028

Promoción y difusión por medios electrónicos 2.0 de las titulaciones (Grados y Postgrados) de la Facultad de Ciencias

Memoria ID-0229. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2014-2015

Herramientas de comunicación y divulgación musical orientadas a la transferencia: entornos digitales 2.0

Este proyecto tiene como objeto la formación sobre recursos y herramientas de comunicación y divulgación musical en espacios 2.0, con el fin de utilizarlas en el aula y fomentar la transferencia y el emprendimiento en el ámbito de la musicología

Crítica, periodismo y divulgación musical en espacios digitales

Mediante el presente proyecto se ha ofrecido formación en recursos y prácticas de crítica y periodismo musical, profundizando en la importancia de la divulgación en espacios digitales. Se trata de la continuación del anterior proyecto de innovación no 21 "Herramientas de comunicación y divulgación musical orientadas a la transferencia: entornos digitales 2.0". El nuevo proyecto se ha centrado en los ámbitos de la crítica y el periodismo, concretamente en la actualidad de la prensa escrita y la radio, así como ha tenido en cuenta el uso extendido de redes sociales y plataformas online en tareas de divulgación de contenidos. Dicha formación ha querido dar respuesta a la necesidad de que el profesorado y el alumnado en Musicología actualice y refuerce su conocimiento sobre los códigos, recursos, y entornos en los que se desarrollan estos campos, ya que se trata actualmente de uno de los ámbitos principales de proyección profesional de los egresados de Musicología, a través de la demanda de publicaciones digitales que requieren especialización en música, , radios - en las cuales la interacción con el usuario de internet es crucial-, e instituciones culturales y musicales que necesitan reseñas, crónicas, y breves escritos enfocados a sus espacios de difusión y promoción en internet. Se trata de un proyecto interfacultativo e interdepartamental ya que ha implicado a profesionales, docentes, investigadores y alumnado del Departamento de Musicología, el ICCMU (ambos de la Facultad de Geografía e Historia), y el Departamento de Periodismo y Nuevos medios (Facultad de Ciencias de la Información)

Measurement of the cross-section of high transverse momentum vector bosons reconstructed as single jets and studies of jet substructure in pp collisions at √s = 7 TeV with the ATLAS detector

This paper presents a measurement of the cross-section for high transverse momentum W and Z bosons produced in pp collisions and decaying to all-hadronic final states. The data used in the analysis were recorded by the ATLAS detector at the CERN Large Hadron Collider at a centre-of-mass energy of √s = 7 TeV;{\rm Te}{\rm V}$and correspond to an integrated luminosity of$4.6\;{\rm f}{{{\rm b}}^{-1}}$. The measurement is performed by reconstructing the boosted W or Z bosons in single jets. The reconstructed jet mass is used to identify the W and Z bosons, and a jet substructure method based on energy cluster information in the jet centre-of-mass frame is used to suppress the large multi-jet background. The cross-section for events with a hadronically decaying W or Z boson, with transverse momentum${{p}_{{\rm T}}}\gt 320\;{\rm Ge}{\rm V}$and pseudorapidity$|\eta |\lt 1.9$, is measured to be${{\sigma }_{W+Z}}=8.5\pm 1.7$ pb and is compared to next-to-leading-order calculations. The selected events are further used to study jet grooming techniques

Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector

The production of a W boson in association with a single charm quark is studied using 4.6 fb−1 of pp collision data at s√ = 7 TeV collected with the ATLAS detector at the Large Hadron Collider. In events in which a W boson decays to an electron or muon, the charm quark is tagged either by its semileptonic decay to a muon or by the presence of a charmed meson. The integrated and differential cross sections as a function of the pseudorapidity of the lepton from the W-boson decay are measured. Results are compared to the predictions of next-to-leading-order QCD calculations obtained from various parton distribution function parameterisations. The ratio of the strange-to-down sea-quark distributions is determined to be 0.96+0.26−0.30 at Q 2 = 1.9 GeV2, which supports the hypothesis of an SU(3)-symmetric composition of the light-quark sea. Additionally, the cross-section ratio σ(W + +c¯¯)/σ(W − + c) is compared to the predictions obtained using parton distribution function parameterisations with different assumptions about the s−s¯¯¯ quark asymmetry

Measurement of χ c1 and χ c2 production with s√ = 7 TeV pp collisions at ATLAS

The prompt and non-prompt production cross-sections for the χ c1 and χ c2 charmonium states are measured in pp collisions at s√ = 7 TeV with the ATLAS detector at the LHC using 4.5 fb−1 of integrated luminosity. The χ c states are reconstructed through the radiative decay χ c → J/ψγ (with J/ψ → μ + μ −) where photons are reconstructed from γ → e + e − conversions. The production rate of the χ c2 state relative to the χ c1 state is measured for prompt and non-prompt χ c as a function of J/ψ transverse momentum. The prompt χ c cross-sections are combined with existing measurements of prompt J/ψ production to derive the fraction of prompt J/ψ produced in feed-down from χ c decays. The fractions of χ c1 and χ c2 produced in b-hadron decays are also measured

Search for a CP-odd Higgs boson decaying to Zh in pp collisions at √s=8TeV with the ATLAS detector

A search for a heavy, CP-odd Higgs boson, A, decaying into a Zboson and a 125GeV Higgs boson, h, with the ATLAS detector at the LHC is presented. The search uses proton–proton collision data at a centre-of-mass energy of 8TeV corresponding to an integrated luminosity of 20.3fb−1. Decays of CP-even hbosons to ττor bbpairs with the Zboson decaying to electron or muon pairs are considered, as well as h →bbdecays with the Zboson decaying to neutrinos. No evidence for the production of an Aboson in these channels is found and the 95% confidence level upper limits derived for σ(gg→A) ×BR(A →Zh) ×BR(h →f¯f)are 0.098–0.013pb for f=τand 0.57–0.014pb for f=bin a range of mA=220–1000GeV. The results are combined and interpreted in the context of two-Higgs-doublet models. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons

Observation of top-quark pair production in association with a photon and measurement of the ttγ production cross section in pp collisions at √s = 7 TeV using the ATLAS detector

A search is performed for top-quark pairs (tt) produced together with a photon (γ) with transverse energy greater than 20 GeV using a sample of tt candidate events in final states with jets, missing transverse momentum, and one isolated electron or muon. The data set used corresponds to an integrated luminosity of 4.59 fb −1 of proton-proton collisions at a center-of-mass energy of 7 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. In total, 140 and 222 ttγ candidate events are observed in the electron and muon channels, to be compared to the expectation of 79 +/- 26 and 120 +/- 39 non-ttγ background events, respectively. The production of ttγ events is observed with a significance of 5.3 standard deviations away from the null hypothesis. The ttγ production cross section times the branching ratio (BR) of the single-lepton decay channel is measured in a fiducial kinematic region within the ATLAS acceptance. The measured value is σ (fid/tty) × BR = 63 +/- 8(stat) (+17/-13)(syst) +/- 1 lumi fb per lepton flavor, in good agreement with the leading-order theoretical calculation normalized to the next-to-leading-order theoretical prediction of 48 +/- 10 fb