Information gain feature selection for multi-label classification.

In many important application domains, such as text categorization, biomolecular analysis, scene or video classification and medical diagnosis, instances are naturally associated with more than one class label, giving rise to multi-label classification problems. This fact has led, in recent years, to a substantial amount of research in multi-label classification. And, more specifically, many feature selection methods have been developed to allow the identification of relevant and informative features for multi-label classification. However, most methods proposed for this task rely on the transformation of the multi-label data set into a single-label one. In this work we have chosen one of the most wellknown measures for feature selection ? Information Gain ? and we have evaluated it along with common transformation techniques for the multi-label classification. We have also adapted the information gain feature selection technique to handle multi-label data directly. Our goal is to perform a thorough investigation of the performance of multi-label feature selection techniques using the information gain concept and report how it varies when coupled with different multi-label classifiers and data sets from different domains

Application of the servqual tool for analysis of service quality and benchmarking: case study in retail companies

For companies to be able to succeed in sales, it is necessary to provide quality services, and to achieve that it is extremely important to meet the expectations of its consumers. The SERVQUAL tool allows for the analysis of what the customer expects of a certain type of service and what, in fact, the company is offering to him. In this regard, the objective of the present work is to perform a quality analysis in a retail company and compare it with the perceptions of clients from a benchmark company. For this, through a case study, 60 questionnaires were submitted to two companies operating in the same market segment. The results obtained were: i) the SERVQUAL tool is not widely used in the market segment in which the companies operate; ii) the strength of the Company 1 is the Empathy dimension and the strength of the Benchmark Company is its Responsiveness; iii) both companies present opportunities for improvement in the Tangible dimension (physical facilities); iv) despite the Benchmark Company getting, in general, better results, there are areas where Company 1 is more developed, such as, individualized attention

Intervenção psicomotora em crianças de nível socioeconômico baixo

This study aimed at outlining the psychomotor profile of socioeconomically disadvantaged children and at verifying the effect on them of an assessment-based psychomotor training program. Participants were six 10-to-12 year-old children (mean age 11.5±0.92), who were evaluated before and after the program by means of a psychomotor battery which assesses seven categories: tonus, equilibrium, lateralisation, body perception, time-space orientation, gross and fine praxis; scores range from 1 to 4, determining the following profiles: 1, apraxic; 2, dyspraxic; 3, eupraxic; 4, hyperpraxic. By drawing on children's difficulties, a psychomotor playing program was applied during 3 months, in 16 one-hour sessions, twice a week. The initial evaluation showed participants profile to be predominantly eupraxic in equilibrium, lateralisation, body perception, gross and fine praxis; profile was mostly dyspraxic as to tonus and time-space orientation. After the program, scores significantly improved in tonus, equilibration, time-space orientation, gross, and fine praxis (pVisou-se identificar o perfil psicomotor de crianças de baixo nível socioeconômico e verificar o efeito nelas de um programa de intervenção psicomotora. Participaram do estudo seis crianças do sexo masculino, na faixa de 10 a 12 anos (11,5±0,92). Os participantes foram avaliados utilizando-se uma bateria psicomotora que avalia sete fatores psicomotores: tonicidade, equilibração, lateralização, noção do corpo, estruturação espaço-temporal, praxia global e fina; de acordo com o desempenho da criança, os fatores são pontuados de 1 a 4; o escore 1 refere-se ao perfil apráxico, 2 ao dispráxico, 3 ao eupráxico e 4 ao hiperpráxico. Com base nas dificuldades detectadas foi elaborado um programa de intervenção psicomotora, aplicado durante três meses, em 16 sessões de uma hora de duração, duas vezes por semana. Ao término da intervenção os participantes foram reavaliados. Pela avaliação inicial, o perfil dos participantes foi predominantemente eupráxico nos fatores equilibração, lateralização, noção do corpo, praxia global e praxia fina; nos fatores tonicidade e estruturação espaço-temporal o perfil foi predominantemente dispráxico. Após o programa de intervenção houve aumento estatisticamente significativo (

Listening to the headphones, hearing the city: towards an audio-visual representation of the local musicking

O presente artigo discute a utilização do audiovisual para representar as características e as possibilidades de um musicar local. Ao observar o processo de criação do documentário Um ouvido no fone e o outro na cidade, os(as) autores(as) refletem sobre os usos e as funções da música, bem como sobre o engajamento musical e a relação de escuta dos(as) riders – entregadores(as) de comida por aplicativo. Esses(as) profissionais são brasileiras e brasileiros que moram em Dublin e que têm a música como parte essencial da sua rotina de trabalho. Nesse sentido, nossa questão é: como representar as diversidades e as contradições desse musicar local? Argumentamos que, por meio das etapas coletivas de desenvolvimento e criação desse documentário, os(as) realizadores(as) expressam não apenas o engajamento dos(as) riders com a música, mas também constroem uma representação sensorial do musicar que perpassa as relações de trabalho, de afeto e de localidade.This essay discusses the use of audio-visual to represent the characteristics and possibilities of local musicking. When observing the process of creating the documentary Um ouvido no fone e o outro na cidade, the authors reflect on the uses and functions of music, as well as on the musical engagement and listening relationship of the riders – food deliverers by apps. These professionals are Brazilians who live in Dublin and who have music as an essential part of their work routine. In this sense, our question is: how to represent the diversity and contradictions of this local musicking? We argue that, through the collective stages of development and creation of this documentary, the directors express not only the engagement of the riders with the music, but also build a sensory representation of the music that runs through the relationships of work, affection and locality

Artificial intelligence to growth stresses predicting in Eucalyptus clones using dendrometric variables and wood density

Eucalyptus planted forests contribute to maximizing lumber production but problems such as longitudinal growth strain can negatively influence the quality of the products. Knowing dendrometric variables and wood properties can help in the prediction of longitudinal growth strain, mainly with the help of artificial intelligence. Thus, the aim of this research was to evaluate the use of artificial neural networks to predict longitudinal growth strain in Eucalyptus trees based on dendrometric variables, spacing between trees and wood density. The longitudinal growth strain was measured in trees of four Eucalyptus clones planted in three spacings. The diameter and height of each tree were measured. The basic wood density was determined. Artificial neural networks were used to estimate longitudinal growth strain as a function of dendrometric variables, tree spacing and wood density. The results showed that the artificial neural networks presented good results for training and validation, with most of them resulting in high correlation coefficient values. The trained artificial neural networks showed a correlation coefficient above 0,56. Artificial neural networks showed that the variables clone and basic wood density were the ones that most contributed to the prediction of longitudinal growth strain. On the other hand, the spacing between trees, the height of the tree and the diameter at breast height were not relevant to predict growth stresses

Estratégias para o controle de capim-amargoso (Digitaria insularis) resistente ao glyphosate na cultura milho safrinha

The sourgrass (Digitaria insularis) characteristics of aggressiveness and the existence of glyphosate resistant biotypes puts this weed in evidence in the Brazilian agricultural scenario In this regard, the present study aimed at the development and evaluation of strategies for the management of sourgrass (Digitaria insularis) resistant to glyphosate in out-of-season corn crop. The use of paraquat in pre-harvest burn-down of soybean followed by the application of clethodim two days after harvesting soybeans provided flexibility to choose the herbicide used as post-emergent in corn.As características de agressividade do capim-amargoso (Digitaria insularis) e a existência de biótipos resistentes ao glyphosate colocam esta planta daninha em evidência no cenário agrícola brasileiro. Neste sentido, o trabalho teve como objetivo a avaliação de estratégias para o manejo de capim-amargoso (Digitaria insularis) resistente ao glyphosate na cultura do milho safrinha. A utilização paraquat na dessecação pré-colheita da soja seguida da aplicação de clethodim dois dias após a colheita da proporcionou a maior flexibilidade para a escolha dos herbicidas utilizados em pós-emergência do milho

Risk factors of transplant renal artery stenosis in kidney transplant recipients

Background: Transplant Renal Artery Stenosis (TRAS) is a recognized vascular complication after kidney transplantation. The overall risk predictors of TRAS are poorly understood. Methods: Retrospective analysis of patients with suspected TRAS (Doppler ultrasound PSV > 200 cm/s) who underwent angiographic study in a single center between 2007 and 2014. All patients with stenosis > 50% were considered with TRAS. Stenosis restricted in the body of the artery was also analyzed in a subgroup. Results: 274 patients were submitted to a renal angiography and 166 confirmed TRAS. TRAS group featured an older population (46.3 ± 11.0 vs. 40.9 ±14.2 years; p = 0.001), more frequent hypertensive nephropathy (30.1% vs. 15.7%; p = 0.01), higher incidence of Delayed Graft Function (DGF) (52.0% vs. 25.6%; p < 0.001) and longer Cold Ischemia Time (CIT) (21.5 ± 10.6 vs. 15.7 ± 12.9h; p < 0.001). In multivariable analyses, DGF (OR = 3.31; 95% CI 1.78‒6.30; p < 0.0001) was independent risk factors for TRAS. DM and CIT showed a tendency towards TRAS. The compound discriminatory capacity of the multivariable model (AUC = 0.775; 95% CI 0.718‒0.831) is significantly higher than systolic blood pressure and creatinine alone (AUC = 0.62; 95% CI 0.558–0.661). In body artery stenosis subgroup, DGF (OR = 1.86; 95% CI 1.04‒3.36; p = 0.03) and Diabetes Mellitus (DM) (OR = 2.44; 95% CI 1.31‒4.60; p = 0.005) were independent risk factors for TRAS. Conclusion: In our transplant population, DGF increased more than 3-fold the risk of TRAS. In the subgroup analysis, both DGF and DM increases the risk of body artery stenosis. The addition of other factors to hypertension and renal dysfunction may increase diagnostic accuracy. TRAS Trial registred: clinicaltrials.gov (n° NCT04225338)

Síndrome de Berardinelli-Seip com acometimento familiar em Patos de Minas - MG: um relato de caso : Berardinelli-Seip syndrome with Family involvement in Patos de Minas - MG: a case report

A síndrome de Berardinelli-Seip (SBS) é uma desordem genética rara, de herança autossômica recessiva, que possui relação direta com consanguinidade paterna. Caracteriza-se por uma lipodistrofia total congênita, que acarreta atrofia completa do tecido adiposo subcutâneo e extrema resistência à insulina. Diabetes melito tipo II não cetótico e insulino resistente, hepatomegalia secundária a esteatose hepática, dislipidemia com significativa hipertrigliceridemia e hipertrofia do músculo esquelético compõe clinicamente sua apresentação. O diagnóstico de tal enfermidade é normalmente firmado até a adolescência a partir de critérios específicos, distribuídos entre critérios maiores e menores. O manejo clínico é essencialmente centrado na modulação e enfrentamento das complicações metabólicas relacionadas à síndrome, sendo o gerenciamento dietético o aspecto de maior relevância. Este estudo busca relatar o caso de uma paciente portadora de Síndrome de Berardinelli, com acometimento familiar, acompanhada no serviço de Atenção Primária no município de Patos de Minas – Minas Gerais. Trata-se de um relato de caso com revisão de literatura realizada em janeiro de 2021

Fractional Distillation of Bio-Oil Produced by Pyrolysis of Açaí (Euterpe oleracea) Seeds

In this work, the seeds of açaí (Euterpe oleracea, Mart), a rich lignin-cellulose residue, has been submitted to pyrolysis to produce a bio-oil-like fossil fuels. The pyrolysis carried out in a reactor of 143 L, 450°C, and 1.0 atm. The morphology of Açaí seeds in nature and after pyrolysis is characterized by SEM, EDX, and XRD. The experiments show that bio-oil, gas, and coke yields were 4.38, 30.56, and 35.67% (wt.), respectively. The bio-oil characterized by AOCS, ASTM, and ABNT/NBR methods for density, kinematic viscosity, and acid value. The bio-oil density, viscosity, and acid value were 1.0468 g/cm3, 68.34 mm2/s, and 70.26 KOH/g, respectively. The chemical composition and chemical functions of bio-oil are determined by GC-MS and FT-IR. The GC-MS identified in bio-oil 21.52% (wt.) hydrocarbons and 78.48% (wt.) oxygenates (4.06% esters, 8.52% carboxylic acids, 3.53% ketones, 35.16% phenols, 20.52% cresols, 5.75% furans, and 0.91% (wt.) aldehydes), making it possible to apply fractional distillation to obtain fossil fuel-like fractions rich in hydrocarbons. The distillation of bio-oil is carried out in a laboratory-scale column, according to the boiling temperature of fossil fuels. The distillation of bio-oil yielded fossil fuel-like fractions (gasoline, kerosene, and light diesel) of 4.70, 28.21, and 22.35% (wt.), respectively