6,797 research outputs found

    Measurement of properties of the Higgs boson in bosonic decay channels using the ATLAS detector

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    The properties of the Higgs boson measured in bosonic decay channels (HγγH \rightarrow \gamma\gamma, HZZ4H \rightarrow ZZ^* \rightarrow 4\ell, HWWννH \rightarrow WW^{*} \rightarrow \ell\nu\ell\nu, HZγH \rightarrow Z\gamma) with 25 fb1^{-1} of pp collision data from the Large Hadron Collider run-1 collected by the ATLAS experiment are presented. The results include an improved measurement of the mass of the Higgs boson from a combined fit to the invariant mass spectra of the decay channels HγγH \rightarrow \gamma\gamma and HZZ4H \rightarrow ZZ^* \rightarrow 4\ell, which yields mH=125.36±0.37m_H = 125.36 \pm 0.37 (stat) ±0.18\pm 0.18 (syst) GeV = 125.36±0.41125.36 \pm 0.41 GeV and supersedes the previous result from ATLAS.Comment: 6 pages, 8 figures, Large Hadron Collider Physics (LHCP) Conference 201

    Application of IoT and Machine Learning techniques for the assessment of thermal comfort perception.

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    Abstract Thermal comfort is traditionally assessed by using the PMV index defined according to the EN ISO 7730:2005 where the user passively interacts with the surrounding environment considering a physic-based model built on a steady-state thermal energy balance equation. The thermal comfort satisfaction is a holistic concept comprising behavioral, physiological and psychological aspects. This article describes a workflow for the assessment of the thermal conditions of users through the analysis of their specific psychophysical conditions overcoming the limitation of the physic-based model in order to investigate and consider other possible relations between the subjective and objective variables

    Expression of calcium-binding proteins and selected neuropeptides in the human, chimpanzee, and crab-eating macaque claustrum

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    The claustrum is present in all mammalian species examined so far and its morphology, chemoarchitecture, physiology, phylogenesis and ontogenesis are still a matter of debate. Several morphologically distinct types of immunostained cells were described in different mammalian species. To date, a comparative study on the neurochemical organization of the human and non-human primates claustrum has not been fully described yet, partially due to technical reasons linked to the postmortem sampling interval. The present study analyze the localization and morphology of neurons expressing parvalbumin (PV), calretinin (CR), NPY, and somatostatin (SOM) in the claustrum of man (# 5), chimpanzee (# 1) and crab-eating monkey (# 3). Immunoreactivity for the used markers was observed in neuronal cell bodies and processes distributed throughout the anterior-posterior extent of human, chimpanzee and macaque claustrum. Both CR- and PV-immunoreactive (ir) neurons were mostly localized in the central and ventral region of the claustrum of the three species while SOM- and NPY-ir neurons seemed to be equally distributed throughout the ventral-dorsal extent. In the chimpanzee claustrum SOM-ir elements were not observed. No co-localization of PV with CR was found, thus suggesting the existence of two non-overlapping populations of PV and CR-ir interneurons. The expression of most proteins (CR, PV, NPY), was similar in all species. The only exception was the absence of SOM-ir elements in the claustrum of the chimpanzee, likely due to species specific variability. Our data suggest a possible common structural organization shared with the adjacent insular region, a further element that emphasizes a possible common ontogeny of the claustrum and the neocortex

    Machine learning partners in criminal networks

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    Recent research has shown that criminal networks have complex organizational structures, but whether this can be used to predict static and dynamic properties of criminal networks remains little explored. Here, by combining graph representation learning and machine learning methods, we show that structural properties of political corruption, police intelligence, and money laundering networks can be used to recover missing criminal partnerships, distinguish among diferent types of criminal and legal associations, as well as predict the total amount of money exchanged among criminal agents, all with outstanding accuracy. We also show that our approach can anticipate future criminal associations during the dynamic growth of corruption networks with signifcant accuracy. Thus, similar to evidence found at crime scenes, we conclude that structural patterns of criminal networks carry crucial information about illegal activities, which allows machine learning methods to predict missing information and even anticipate future criminal behavior

    Deep Learning Criminal Networks

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    Recent advances in deep learning methods have enabled researchers to develop and apply algorithms for the analysis and modeling of complex networks. These advances have sparked a surge of interest at the interface between network science and machine learning. Despite this, the use of machine learning methods to investigate criminal networks remains surprisingly scarce. Here, we explore the potential of graph convolutional networks to learn patterns among networked criminals and to predict various properties of criminal networks. Using empirical data from political corruption, criminal police intelligence, and criminal financial networks, we develop a series of deep learning models based on the GraphSAGE framework that are capable to recover missing criminal partnerships, distinguish among types of associations, predict the amount of money exchanged among criminal agents, and even anticipate partnerships and recidivism of criminals during the growth dynamics of corruption networks, all with impressive accuracy. Our deep learning models significantly outperform previous shallow learning approaches and produce high-quality embeddings for node and edge properties. Moreover, these models inherit all the advantages of the GraphSAGE framework, including the generalization to unseen nodes and scaling up to large graph structures.Comment: 14 two-column pages, 5 figure

    Rizo tomia e discectomia endoscópica no tratamento da dor lombar crônica e radiculopatia aguda na síndrome da pessoa rígida- relato de caso

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    Introduction: Stiff Person Syndrome (SPS) is a rare neurological disorder, first described in 1956 by Moersch and Woltman. The clinical picture has an insidious onset of classic findings of episodic painful spasms, hyperreflexia, axial muscle stiffness, progressing slowly to the proximal limb muscles. Painful hyperlordosis due to lumbar spine stiffness is a diagnostic characteristic of SPS. CASE REPORT: Male, 69 years old, with SPS for 40 years, referred by the neurologist to the spine surgeon because of failure to conservative management of chronic low back pain, progressively acute leg and gait impairment.  Physical examination is difficult to perform in SPS because it triggers spasms. MRI presented zygoapophyseal joint, intervertebral discs and muscle degeneration, including a L4L5 cranial migrated herniated disc. Once there were no other effective ways to manage his axial and radicular pain, it was decided to perform percutaneous transforaminal endoscopic discectomy for L4L5 decompression, L3 to S1 dorsal ganglion root medial branch ablative radiofrequency rhizotomy to relieve facet pain and L2 dorsal sensory ganglion pulsed radiofrequency rhizotomy for modulation of chronic low back pain. One year postoperative follow up, the patient has showed improvement in the VAS and SF-36. CONCLUSION: Chronic pain reported by a patient must be addressed in the biological, psychological and social dimensions. Understanding the multidimensionality of the factors involved with pain allows planning less aggressive and highly efficient strategies in uncommon and off label patients, as in the case of SPS.Introdução: A síndrome da pessoa rígida (SPR) é um distúrbio neurológico raro, descrito pela primeira vez em 1956 por Moersch e Woltman. O quadro clínico apresenta início insidioso de achados clássicos de espasmos dolorosos episódicos, hiperreflexia, rigidez muscular axial, progredindo lentamente para os músculos proximais dos membros. A hiperlordose dolorosa devido à rigidez da coluna lombar é uma característica diagnóstica do SPS. RELATO DO CASO: Homem, 69 anos, com SPS há 40 anos, encaminhado pelo neurologista ao cirurgião de coluna por falha no manejo conservador da lombalgia crônica, dor radicular progressivo na perna e alteração da marcha. O exame físico é difícil de realizar na SPR porque desencadeia espasmos. A ressonância magnética apresentou degeneração nas articulações zigapofisárias, nos discos intervertebrais e muscular, incluindo hérnia discal L4L5 com migração cranial. Uma vez que não havia outras maneiras eficazes de gerenciar sua dor axial e radicular, foi decidido realizar discectomia endoscópica transforaminal percutânea para descompressão de L4L5, rizotomia de radiofrequência ablativa do ramo medial do gânglio dorsal de L3 a S1 para aliviar a dor facetaria e rizotomia de radiofrequência pulsada do gânglio sensitivo dorsal L2 para modulação da dor lombar crônica. Após um ano de pós-operatório, o paciente apresentou melhora na EVA e no SF-36. CONCLUSÃO: A dor crônica relatada pelo paciente deve ser tratada nas dimensões biológica, psicológica e social. Compreender a multidimensionalidade dos fatores envolvidos com a dor permite planejar estratégias menos agressivas e altamente eficientes em pacientes incomuns e off label, como no caso do SPS

    PRINCIPAIS ALTERAÇÕES DE NORMALIDADE DA MUCOSA BUCAL NA UNIVERSIDADE DO OESTE DE SANTA CATARINA (UNOESC)

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    As alterações de normalidade da mucosa bucal são aquelas que não apresentam obrigatoriamente caráter de doença, tratando-se tão somente de um “desvio de normalidade”, mesmo assim, essa condição não exime o profissional de efetuar um exame clínico detalhado e completo referente à alteração diagnosticada. Representadas por Grânulos de Fordyce, Varicosidades, Tórus Mandibular e Palatino, Língua fissurada, Glossite Romboidal Mediana, Leucoedema, Língua Pilosa, Glossite Migratória Benigna, entre outras, as alterações de normalidade são relativamente comuns, apresentando componentes genéticos e tendo sua frequência aumentada conforme a idade. O seguinte estudo teve o objetivo de verificar as mais frequentes alterações de normalidade, abordando suas características clínicas e histológicas, observadas em pacientes adultos atendidos no componente curricular de Diagnóstico VI e Clínica Integrada I, da Universidade do Oeste de Santa Catarina, entre os anos de 2012 e primeiro semestre de 2013. Foram analisados sessenta e sete prontuários (67), observando-se que 11,9% dos pacientes atendidos apresentaram algum tipo de alteração de normalidade, prevalecendo as varicosidades, que representaram 4,4% das alterações encontradas, seguida de Glossite Migratória Benigna, em 2,9% dos pacientes atendidos pela clínica. Foi encontrado também Língua Pilosa (1,4%), Lábio Duplo (1,4%) e Glossite Romboidal Mediana (1,4%). O estudo das alterações de mucosa que ocorrem na cavidade bucal é de grande relevância para a prática clínica odontológica, nesse contexto, o cirurgião-dentista deve estar apto a reconhecer e diferenciar as estruturas bucais normais e as variações de normalidade além das alterações patológicas que podem estar presentes da cavidade bucal, verificando-se os possíveis fatores associados com a sua ocorrência.Palavras-chave: Alterações de normalidade. Diagnóstico. Cavidade bucal
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