Semantic Search of Mobile Applications Using Word Embeddings

This paper proposes a set of approaches for the semantic search of mobile applications, based on their name and on the unstructured textual information contained in their description. The proposed approaches make use of word-level, character-level, and contextual word-embeddings that have been trained or fine-tuned using a dataset of about 500 thousand mobile apps, collected in the scope of this work. The proposed approaches have been evaluated using a public dataset that includes information about 43 thousand applications, and 56 manually annotated non-exact queries. Our results show that both character-level embeddings trained on our data, and fine-tuned RoBERTa models surpass the performance of the other existing retrieval strategies reported in the literature

Avaliação de um método de análise silvigênica em uma Floresta Estacional Semidecidual

Aiming to contribute to the biological interpretation of silvigenics mosaics obtained by line interception method for inventorying canopy trees, this was applied in an area of 5.12 ha of a semi deciduous forest at the Ecological Station of Caetetus (Gália, São Paulo state, Brazil). Statistical analyses (Qui-square and adjusted residues) were applied to verify whether the eco-unit categories are associated with floristic composition and / or successional species groups. The predominance of steady-state eco-units 2A (compound of present trees) combined with the low frequency of eco-units in reorganization (gaps) and development eco-units indicated that the studied forest is in mature phase and little disturbed. Some few coherent associations were found between pioneers and early secondary species with eco-units which defining tree architectures allow larger entrance of light. Considering the eco-physiological parameters used to distinguish the successional species groups, many incoherent associations were found between late secondary species with eco-unit categories that are presumed to represent the earlier phases of silvigenesis. This kind of result suggests that the studied method of silvigenic analysis is not adequate to describe phases of forest regeneration

EVALUATION OF A METHOD OF SILVIGENIC ANALYSIS IN CERRAD\uc3O

The method \u201cline-intercept sampling method of canopy trees\u201d was applied to map the silvigenic mosaic of a patch of 5.12 ha in a cerrad\ue3o at Esta\ue7\ue3o Ecol\uf3gica de Assis, in S\ue3o Paulo state, aiming to verify its applicability in estimating the conservation status and to show the regeneration processes in this type of forest with open canopy. We also analyzed the distribution of shade tolerant or intolerant species among the categories of eco-unities. The mosaic comprised five tree fall gaps (eco-unities in reorganization) and 1,296 individuals, 845 of which in eco-unities in equilibrium, 241 in development, and 210 degrading. The predominance of eco-units in equilibrium 2B (tall trees with low pole) is coherent with the open canopy. The shade intolerant species Vochysia tucanorum , Xylopia aromatica , and Plenckia populnea presented occurred preferably in starting eco-units of silvigenesis. But most of the species, especially the shade tolerant ones, did not present any correlation with eco-unit categories. The method revealed the maturity and the good architectural conservation status of the studied cerrad\ue3o. We noticed that there may be overlapping of ecounities in development and degrading when this latter one is delimited by dead standing trees that allow the growth of young individuals around themO m\ue9todo \u201cinvent\ue1rio de \ue1rvores de dossel por intercepta\ue7\ue3o de linhas\u201d foi aplicado para mapear o mosaico silvig\ueanico em uma \ue1rea de 5,12 ha de cerrad\ue3o na Esta\ue7\ue3o Ecol\uf3gica de Assis (SP), e avaliado quanto \ue0 sua aplicabilidade para estimar o grau de conserva\ue7\ue3o e para evidenciar os processos de regenera\ue7\ue3o neste tipo de floresta com dossel aberto. Tamb\ue9m foi avaliada a distribui\ue7\ue3o de esp\ue9cies tolerantes ou intolerantes \ue0 sombra entre as categorias de ecounidades. O mosaico compreendeu cinco clareiras (ecounidades em reorganiza\ue7\ue3o) e 1296 indiv\uedduos, sendo 845 em ecounidades em equil\uedbrio, 241 em desenvolvimento, e 210 em degrada\ue7\ue3o. Coerentemente com o dossel aberto induzindo reitera\ue7\ue3o precoce, predominaram as ecounidades em equil\uedbrio 2B (\ue1rvores altas com fuste baixo). Vochysia tucanorum Mart., Xylopia aromatica (Lam.) Mart. E Plenckia populnea Reissek, esp\ue9cies intolerantes \ue0 sombra, ocorreram preferencialmente em ecounidades iniciais da silvig\ueanese. Mas, a maioria das esp\ue9cies, principalmente as tolerantes \ue0 sombra, n\ue3o se associou com quaisquer categorias de ecounidades. O m\ue9todo evidenciou a maturidade e o bom estado de conserva\ue7\ue3o arquitetural do cerrad\ue3o estudado. O estudo mostrou que pode haver sobreposi\ue7\ue3o de ecounidades em desenvolvimento e em degrada\ue7\ue3o quando estas \ufaltimas s\ue3o delineadas por \ue1rvores mortas em p\ue9 que permitem o crescimento de indiv\uedduos jovens ao redor delas

AVALIAÇÃO DE UM MÉTODO DE ANÁLISE SILVIGÊNICA EM UM CERRADÃO

http://dx.doi.org/10.5902/1980509816602The method “line-intercept sampling method of canopy trees” was applied to map the silvigenic mosaic of a patch of 5.12 ha in a cerradão at Estação Ecológica de Assis, in São Paulo state, aiming to verify its applicability in estimating the conservation status and to show the regeneration processes in this type of forest with open canopy. We also analyzed the distribution of shade tolerant or intolerant species among the categories of eco-unities. The mosaic comprised five tree fall gaps (eco-unities in reorganization) and 1,296 individuals, 845 of which in eco-unities in equilibrium, 241 in development, and 210 degrading. The predominance of eco-units in equilibrium 2B (tall trees with low pole) is coherent with the open canopy. The shade intolerant species Vochysiatucanorum, Xylopiaaromatica and Plenckiapopulneapresented occurred preferably in starting eco-units of silvigenesis. But most of the species, especially the shade tolerant ones, did not present any correlation with eco-unit categories. The method revealed the maturity and the good architectural conservation status of the studied cerradão. We noticed that there may be overlapping of eco-unities in development and degrading  when this latter one is delimited by dead standing trees that allow the growth of young individuals around them.http://dx.doi.org/10.5902/1980509816602O método “inventário de árvores de dossel por interceptação de linhas” foi aplicado para mapear o mosaico silvigênico em uma área de 5,12 ha de cerradão na Estação Ecológica de Assis (SP), e avaliado quanto à sua aplicabilidade para estimar o grau de conservação e para evidenciar os processos de regeneração neste tipo de floresta com dossel aberto. Também foi avaliada a distribuição de espécies tolerantes ou intolerantes à sombra entre as categorias de ecounidades. O mosaico compreendeu cinco clareiras (ecounidades em reorganização) e 1296 indivíduos, sendo 845 em ecounidades em equilíbrio, 241 em desenvolvimento, e 210 em degradação. Coerentemente com o dossel aberto induzindo reiteração precoce, predominaram as ecounidades em equilíbrio 2B (árvores altas com fuste baixo). Vochysia tucanorum Mart., Xylopia aromatica (Lam.) Mart. E Plenckia populnea Reissek, espécies intolerantes à sombra, ocorreram preferencialmente em ecounidades iniciais da silvigênese. Mas, a maioria das espécies, principalmente as tolerantes à sombra, não se associou com quaisquer categorias de ecounidades. O método evidenciou a maturidade e o bom estado de conservação arquitetural do cerradão estudado. O estudo mostrou que pode haver sobreposição de ecounidades em desenvolvimento e em degradação quando estas últimas são delineadas por árvores mortas em pé que permitem o crescimento de indivíduos jovens ao redor delas

Desenvolvimento prático de projetos de segurança da informação no Instituto Federal de Educação de Rondônia – Campus Ariquemes / Practical development of information security projects at the Federal Institute of Education of Rondônia – Campus Ariquemes

O presente artigo relata como foram criados e executados projetos de extensão sobre temas relacionados à segurança da informação, no curso técnico em manutenção e suporte em informática, do Campus Ariquemes, do Instituto Federal de Educação, Ciência e Tecnologia de Rondônia. O objetivo foi verificar se os discentes do ensino médio técnico seriam capazes de, sobre orientação de um professor da área, elaborar e executar um projeto prático, sobre os temas, criptografia, engenharia social, SQL Injection WannaCry, dentre outros, apresentando-os e demonstrando a sua prática em uma palestra aberta à comunidade em geral. Os discentes foram alocados em grupos, onde receberam um tema específico, escreveram o projeto, aprenderam a utilizar as tecnologias pertinentes aos temas, criaram apresentações de slides e apresentaram o tema em evento do Campus, demonstrando de forma prática a sua execução, obtendo sucesso nas suas atividades

INFLUÊNCIAS DA VARIAÇÃO DA RESISTÊNCIA DO CONCRETO, DE 20 MPa A 50 MPa, NOS PARÂMETROS DE INSTABILIDADE

Resumo: Em virtude da escassez de espaços horizontais, do crescimento populacional e das novas tecnologias, as edificações estão cada vez mais altas e esbeltas, tornando essencial o estudo da instabilidade. Fazendo uso da ferramenta computacional CAD/TQS versão V17 Pleno para a análise estrutural, abordaram-se as variações do  em uma estrutura de concreto armado, verificando as influências destas variações nos efeitos de segunda ordem, que podem ter sua grandeza estimada pelo parâmetro de instabilidade . A partir da simulação computacional e da análise teórica deste parâmetro, percebeu-se pouca redução do mesmo, o que revela que aumentar o  ao longo dos pavimentos de uma edificação não influencia significativamente nos efeitos de segunda ordem. Palavras-chave: variação do . estruturas de concreto armado. coeficiente . parâmetros de instabilidade

IMPACTO DA NÃO-PRESERVAÇÃO AMBIENTAL NO RESULTADO DE UMA INDÚSTRIA TÊXTIL DA REGIAO METROPOLITANA DE NATAL

This goal of this work is to measure the impact of environmental non-protection in the textile industry in the metropolitan area of Natal/RN. The following aspects were investigated: the production process of this textile industry is directly linked to the environmental degradation; the potential costs of environment non-preservation provided in law and the comparison of these costs of non-preservation with the financial result presented by the Income Statements of the industry and the expenses of the investment for preservation. A field research was performed in order to establish the extension of the environmental costs of non-preservation and the preservation done by the industry under discussion. The results obtained disclosure through estimated scenarios that the potential impact on the company with the occurrence of offenses covered by environmental legislation could lead to fines from R$5,000.00 to R$ 50,000,000.00 and an impact corresponding to three quarters of the profit before income tax, which may cause the closure of the activities.O estudo objetiva mensurar o impacto da não-preservação ambiental em uma indústria têxtil na região metropolitana de Natal/RN. Investigaram-se os seguintes aspectos: o processo produtivo desta indústria têxtil que está diretamente ligado à degradação ambiental; os custos potenciais de não-preservação do meio ambiente previstos em textos legais e a confrontação dos custos de não-preservação com o resultado contábil apresentado na Demonstração do Resultado do Exercício da indústria, bem como os gastos do investimento realizado para a preservação. Pesquisa de campo foi realizada no intuito de constatar a amplitude dos custos ambientais de não-preservação e os de preservação realizados pela indústria em análise. Os resultados da pesquisa demonstraram através de cenários estimados que o potencial impacto na empresa com a ocorrência das infrações previstas na legislação ambiental, acarretaria multas que iriam de R$5.000,00 a R$ 50.000.000,00 e um impacto correspondente a ¾ do lucro antes do imposto de renda, podendo ocasionar o encerramento das suas atividades. &nbsp

Aging, neurocognitive impairment and adherence to antiretroviral therapy in human immunodeficiency virus-infected individuals

AbstractBackground/objectiveThere is an increasing number of older patients with human immunodeficiency virus infection due to the success of antiretroviral therapy, the improved prognosis and life expectancy of patients, and the higher number of new infections among older individuals. The main objective of the present study was to compare the characteristics of older human immunodeficiency virus patients with those of younger patients.Materials and methodsWe conducted a cross-sectional study with human immunodeficiency virus-infected patients who were treated at the Specialized Care Service (Serviço de Assistência Especializada) for human immunodeficiency virus/AIDS in the city of Pelotas, South Brazil. Sociodemographic information as well as data on human immunodeficiency virus infection and treatment were collected. All participants underwent psychiatric and neurocognitive assessments, and their adherence to antiretroviral therapy was evaluated.ResultsA total of 392 patients participated in the study, with 114 patients aged 50 years and older. The characteristics showing significant differences between older and younger human immunodeficiency virus-infected patients included race/ethnicity, comorbidities, duration and adherence to antiretroviral therapy, currently undetectable viral load, and cognitive impairment. Compared to younger patients, older patients were at higher risk of exhibiting cognitive impairment [OR 2.28 (95% CI: 1.35–3.82, p=0.002)] and of having increased adherence to antiretroviral therapy [OR 3.11 (95% CI: 1.67–5.79, p<0.001)].ConclusionsThe prevalence of neurocognitive impairment remained high in human immunodeficiency virus-infected patients despite antiretroviral therapy. In the present study, the prevalence of this type of impairment was significantly higher in patients aged ≥50 years, most likely due to aging, human immunodeficiency virus infection, and a possible synergistic effect between these factors. Despite this higher prevalence, older patients exhibited higher rates of adherence to antiretroviral therapy and of undetectable human immunodeficiency virus viral load

Inspiratory Muscle Training Improves Blood Flow to Resting and Exercising Limbs in Patients With Chronic Heart Failure

ObjectivesWe tested the hypothesis that inspiratory muscle loading could result in exaggerated peripheral vasoconstriction in resting and exercising limbs and that inspiratory muscle training (IMT) could attenuate this effect in patients with chronic heart failure (CHF) and inspiratory muscle weakness.BackgroundInspiratory muscle training improves functional capacity of patients with CHF, but the mechanisms of this effect are unknown.MethodsEighteen patients with CHF and inspiratory muscle weakness (maximal inspiratory pressure <70% of predicted) and 10 healthy volunteers participated in the study. Inspiratory muscle loading was induced by the addition of inspiratory resistance of 60% of maximal inspiratory pressure, while blood flow to the resting calf (CBF) and exercising forearm (FBF) were measured by venous occlusion plethysmography. For the patients with CHF, blood flow measurements as well as ultrasound determination of diaphragm thickness were made before and after a 4-week program of IMT.ResultsWith inspiratory muscle loading, CHF patients demonstrated a more marked reduction in resting CBF and showed an attenuated rise in exercising FBF when compared with control subjects. After 4 weeks of IMT, CHF patients presented hypertrophy of the diaphragm and improved resting CBF and exercise FBF with inspiratory muscle loading.ConclusionsIn patients with CHF and inspiratory muscle weakness, inspiratory muscle loading results in marked reduction of blood flow to resting and exercising limbs. Inspiratory muscle training improves limb blood flow under inspiratory loading in these patients

The psychological distress suffered by medical students at a brazilian public university from the viewpoint of their teachers.

O sofrimento ps?quico do estudante de Medicina ? conhecido e j? estudado. O papel do professor em detectar dificuldades geradoras de sofrimento ps?quico em seus alunos e saber como lidar com elas ? fundamental para a preven??o desse sofrimento. Entretanto, nem sempre os professores est?o preparados para esses desafios. Objetivo: Estudar a percep??o dos docentes do curso de Medicina da Universidade Federal de Minas Gerais (UFMG) em rela??o ao sofrimento ps?quico de seus alunos. M?todo: Estudo transversal quantitativo realizado com os docentes do ciclo profissional do curso de Medicina da UFMG. A amostra de 102 docentes foi obtida por sorteio aleat?rio e dividida em quatro estratos: masculino at? dez anos de doc?ncia, masculino com mais de dez anos, feminino com at? dez anos de doc?ncia e feminino com mais de dez anos. Foi elaborado um question?rio autoaplicativo de 28 itens com cinco op??es da escala de Likert. Para an?lise dos dados foram constru?dos quatro indicadores: indicador de percep??o de sofrimento ps?quico (IPSP), indicador de compromisso do professor com as dificuldades emocionais do estudante (ICDE), indicador de atua??o frente ao sofrimento ps?quico (IAPS) e indicador geral (IG). Realizou-se an?lise dos quartis e calculou- se a diferen?a entre os grupos utilizando testes n?o param?tricos. Cinco quest?es n?o inclu?das nos indicadores foram analisadas separadamente. Resultados: Dos 102 sorteados, 79 docentes responderam e sete se negaram a participar da pesquisa. Foi constatada preocupa??o com o sofrimento ps?quico dos estudantes, vari?vel entre os estratos. Para o IG, as professoras com mais tempo de doc?ncia obtiveram a mediana mais elevada em rela??o aos homens com menos tempo (p<0,05). Para os demais indicadores, apesar da diferen?a entre os quartis, a compara??o das medianas n?o mostrou diferen?as estatisticamente significativas. Para as perguntas n?o inclu?das nos indicadores, do total de professores, 85% j? tiveram alunos com dificuldades emocionais. Os homens, com maior frequ?ncia, afirmaram desconhecer a exist?ncia de problemas emocionais entre os estudantes. Houve desconhecimento das inst?ncias de acolhimento psic?logico aos estudantes por 16,5% dos professores. A ocorr?ncia de bullying na FMUFMG n?o foi percebida por mais de 50% dos professores. Apenas 28% admitiram que seus atos ou atitudes teriam desencadeado sofrimento ps?quico no estudante. Ao se perguntar sobre apoio ao professor, 75,9% desejavam uma inst?ncia de apoio emocional ao professor. Conclus?o: Este estudo, apesar das limita??es, ? in?dito ao avaliar a percep??o do docente do curso de Medicina em rela??o ao sofrimento ps?quico dos estudantes. Tempo de doc?ncia e sexo feminino parecem exercer um papel importante na percep??o do docente sobre o sofrimento ps?quico do estudante. Parcela significativa de professores desconhece a exist?ncia das inst?ncias de apoio psicol?gico aos estudantes. Situa??es de ass?dio e bullying na escola m?dica permanecem negadas por muitos docentes.The psychological distress suffered by medical students is well-known. The role of the teaching staff in detecting difficulties causing students psychological distress and their knowledge of how to handle them is fundamental for preventing such problems. However, medical teachers are not always prepared to deal with these challenges. Objective: To study the perception of the teaching staff of the medical school at the Universidade Federal de Minas Gerais (FMUFMG) concerning the psychological distress of the students.Method: A cross-sectional quantitative study carried out with the faculty of the UFMG medical school. The sample of 102 teachers was obtained by random draw and divided into four groups: males with up to ten (10) years of teaching, males with more than ten (10) years, females with up to ten (10) years of teaching, and females with more than ten (10)years. A self-applied 28-item questionnaire with a 5-point Likert scale from strongly agree to strongly disagree was prepared. For the data analysis four indicators were elaborated: psychological distress perception indicator (IPSP), commitment of the teacher to the student emotional difficulties indicator (ICDE), performance in the face of psychological distress indicator (IAPS) and a general indicator (IG). Quartile analysis was carried out and the difference among the groups was calculated using nonparametric tests. Five questions that were not included in the indicators were independently analyzed. Results: Seven teachers refused to participate and 79 answers were collected.The results showed varying degrees of concern among the groups in relation to the psychological distress of students. For the IG, the female teachers with longer teaching experience obtained a higher median in relation to the men with less teaching experience (p<0.05). For the other indicators, despite the difference between the quartiles, the comparison of the medians showed no statistically significant differences. For questions not included in the indicators, it was shown that 85% of the sample had perceived psychological distress among their students. Male teachers more frequently deny psychological distress among students. 16.5% of the teachers did not know of any instances of institutional psychological care. The occurrence of bullying failed to be noted by more than 50% of the teachers. Only 28% of the teachers admitted that their actions or attitudes could precipitate a student?s psychological distress. When questioned about emotional support for teachers, 75.9% would appreciate some institutional support. Conclusion: The present study, despite its limitations, is unique in assessing the perception of the medical teaching staff in relation to the psychological distress of the students. Teaching experience and being female seem to play an important role in the teacher?s perception of psychological distress among students. A significant portion of the teaching staff ignores the existence of psychological support programs for students