DESENVOLVIMENTO DE APLICAÇÃO IMERSIVA EDUCACIONAL: O SISTEMA SOLAR EM REALIDADE VIRTUAL

Com o avanço e, consequentemente, a popularização de determinadas tecnologias, é comum o uso de sistemas computacionais nas mais diversas áreas, tais como: jogos digitais, educação, publicidade e propaganda, construção civil, arquitetura, entre outras. Ademais, o uso da tecnologia junto às metodologias ativas de ensino, possibilita que as atividades sejam mais dinâmicas e se tornem diferenciais no processo de ensino e aprendizagem. No entanto, cabe-se o questionamento de como tornar essa aplicação interessante aos olhos dos alunos, sem se apoiar apenas no chamariz da tecnologia. Esse problema direcionou a pesquisa ao objetivo de desenvolver uma aplicação imersiva, utilizando de Realidade Virtual (RV), para uso no ambiente educacional. A temática escolhida para a aplicação foi “O sistema solar”, e essa se desenvolveu sob duas frente, a primeira teórica, fundamenta os dados exibidos durante a interação, estuda sua viabilidade, as ferramentas computacionais utilizadas e a usabilidade dentro da Experiência do Usuário (UX); a segunda observa o desenvolvimento prático: proposta de modelos 3D e implementação do ambiente virtual. Essa pesquisa demonstra a criação de uma aplicação mobile em Realidade Virtual, discute sua viabilidade em ambientes de ensino formais e/ou não formais sob a luz da Experiência do Usuário. &nbsp

Programas de conservación de agua en edificios públicos Recife-PE

Relata-se neste artigo o acompanhamento do monitoramento do consumo da água potável em alguns prédios públicos de caráter administrativo do estado de Pernambuco, evidenciando-se boas práticas e buscando-se evitar problemas relativos à conservação de água potável. O projeto de extensão foi iniciado em março de 2018 pelo grupo de pesquisa e extensão em recursos hídricos da Universidade de Pernambuco – AquaPOLI – em parceria com a Secretaria de Administração – tendo como principal finalidade a conservação de água potável nos prédios públicos administrativos. O projeto contou com a cooperação dos gestores de água capacitados de cada prédio. Em reuniões com esses gestores, o Grupo AquaPOLI debateu problemas e suas soluções, e os incentivou a utilizarem a Planilha de Monitoramento do Consumo de Água (PMCA) como ferramenta de controle do consumo de água potável.  Criteriosamente escolhidos, analisaram-se nove prédios públicos, aos quais foram feitas visitas a fim de identificar suas características físicas, a atuação de seu gestor de água e a verificação do consumo de água potável. Dessa forma, verificaram-se algumas dificuldades no monitoramento do consumo da água por parte dos gestores, mas, também, com o passar do tempo, uma melhor atuação dos gestores, que se capacitaram a tomar medidas necessárias diante de alguma anomalia no consumo de água, evitando-se, com a utilização eficiente da PMCA, o desperdício de pelo menos 50 m³/mês de água potável em um único prédio. Ao lado de tudo isso, houve também a realização de campanhas educativas a fim de minimizar o consumo de água no prédio.This article reports the monitoring of drinking water consumption in some public administration buildings in the state of Pernambuco, highlighting good practices that seek to avoid problems related to the conservation of drinking water. The extension project was started in March 2018 by the water resources research and extension group (AquaPOLI) at the University of Pernambuco, in partnership with the city Administration Department, with the main purpose of conserving drinking water in public administration buildings. The project was assisted by trained water managers in each building. In meetings with these managers, the AquaPOLI group discussed problems and their solutions, and encouraged them to use the Water Consumption Monitoring Worksheet (PMCA) as a tool to control drinking water consumption. Nine carefully selected public buildings were analyzed, to which visits were made in order to evaluate their physical characteristics, the performance of the water manager, and the consumption of drinking water. Some difficulties were identified in the monitoring of water consumption by the managers, whose performance improved over time, with the ability to implement the necessary measures when faced with any anomaly in water consumption. The effective use of the PMCA avoided wasting at least 50 m³/month of potable water in a single building. In addition to these activities, educational campaigns were also conducted in order to minimize water consumption in the buildings.Este artículo relata el monitoreo del consumo de agua potable en algunos edificios de la administración pública del estado de Pernambuco, destacando buenas prácticas y buscando evitar problemas relacionados con la conservación del agua potable. El proyecto de extensión fue iniciado en marzo de 2018 por el grupo de investigación y extensión en recursos hídricos de la Universidad de Pernambuco – AquaPOLI – en colaboración con el Departamento de Administración – con el objetivo principal de conservar agua potable en edificios públicos administrativos. El proyecto contó con la colaboración de gestores de agua capacitados en cada edificio. En reuniones con estos gerentes, el Grupo AquaPOLI discutió los problemas y sus soluciones, y los animó a utilizar la Hoja de Monitoreo del Consumo de Agua (PMCA) como una herramienta para controlar el consumo de agua potable. Seleccionados cuidadosamente, se analizaron nueve edificios públicos, a los cuales se realizaron visitas con el fin de identificar sus características físicas, el desempeño de su gestor de agua y la verificación del consumo de agua potable. De esta forma, hubo algunas dificultades en el seguimiento del consumo de agua por parte de los gestores, pero también, con el tiempo, un mejor desempeño de los gestores, que pudieron tomar las medidas necesarias ante cualquier anomalía en el consumo de agua, evitando el despilfarro de al menos 50 m³/mes de agua potable en un solo edificio como resultado del uso eficiente del PMCA. Además de todo esto, también se realizaron campañas educativas con el fin de minimizar el consumo de agua en el edificio

A note on comonotonicity and positivity of the control components of decoupled quadratic FBSDE

In this small note we are concerned with the solution of Forward-Backward Stochastic Differential Equations (FBSDE) with drivers that grow quadratically in the control component (quadratic growth FBSDE or qgFBSDE). The main theorem is a comparison result that allows comparing componentwise the signs of the control processes of two different qgFBSDE. As a byproduct one obtains conditions that allow establishing the positivity of the control process.Comment: accepted for publicatio

Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC

This paper presents the method and performance of primary vertex reconstruction in proton–proton collision data recorded by the ATLAS experiment during Run 1 of the LHC. The studies presented focus on data taken during 2012 at a centre-of-mass energy of √s=8 TeV. The performance has been measured as a function of the number of interactions per bunch crossing over a wide range, from one to seventy. The measurement of the position and size of the luminous region and its use as a constraint to improve the primary vertex resolution are discussed. A longitudinal vertex position resolution of about 30μm is achieved for events with high multiplicity of reconstructed tracks. The transverse position resolution is better than 20μm and is dominated by the precision on the size of the luminous region. An analytical model is proposed to describe the primary vertex reconstruction efficiency as a function of the number of interactions per bunch crossing and of the longitudinal size of the luminous region. Agreement between the data and the predictions of this model is better than 3% up to seventy interactions per bunch crossing

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

The impact of surgical delay on resectability of colorectal cancer: An international prospective cohort study

AIM: The SARS-CoV-2 pandemic has provided a unique opportunity to explore the impact of surgical delays on cancer resectability. This study aimed to compare resectability for colorectal cancer patients undergoing delayed versus non-delayed surgery. METHODS: This was an international prospective cohort study of consecutive colorectal cancer patients with a decision for curative surgery (January-April 2020). Surgical delay was defined as an operation taking place more than 4 weeks after treatment decision, in a patient who did not receive neoadjuvant therapy. A subgroup analysis explored the effects of delay in elective patients only. The impact of longer delays was explored in a sensitivity analysis. The primary outcome was complete resection, defined as curative resection with an R0 margin. RESULTS: Overall, 5453 patients from 304 hospitals in 47 countries were included, of whom 6.6% (358/5453) did not receive their planned operation. Of the 4304 operated patients without neoadjuvant therapy, 40.5% (1744/4304) were delayed beyond 4 weeks. Delayed patients were more likely to be older, men, more comorbid, have higher body mass index and have rectal cancer and early stage disease. Delayed patients had higher unadjusted rates of complete resection (93.7% vs. 91.9%, P = 0.032) and lower rates of emergency surgery (4.5% vs. 22.5%, P < 0.001). After adjustment, delay was not associated with a lower rate of complete resection (OR 1.18, 95% CI 0.90-1.55, P = 0.224), which was consistent in elective patients only (OR 0.94, 95% CI 0.69-1.27, P = 0.672). Longer delays were not associated with poorer outcomes. CONCLUSION: One in 15 colorectal cancer patients did not receive their planned operation during the first wave of COVID-19. Surgical delay did not appear to compromise resectability, raising the hypothesis that any reduction in long-term survival attributable to delays is likely to be due to micro-metastatic disease

Event-shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at root(NN)-N-S=2.76 TeV

Peer reviewe

Diretriz da Sociedade Brasileira de Cardiologia sobre Diagnóstico e Tratamento de Pacientes com Cardiomiopatia da Doença de Chagas

This guideline aimed to update the concepts and formulate the standards of conduct and scientific evidence that support them, regarding the diagnosis and treatment of the Cardiomyopathy of Chagas disease, with special emphasis on the rationality base that supported it.&nbsp; Chagas disease in the 21st century maintains an epidemiological pattern of endemicity in 21 Latin American countries. Researchers and managers from endemic and non-endemic countries point to the need to adopt comprehensive public health policies to effectively control the interhuman transmission of T. cruzi infection, and to obtain an optimized level of care for already infected individuals, focusing on diagnostic and therapeutic opportunistic opportunities. &nbsp; Pathogenic and pathophysiological mechanisms of the Cardiomyopathy of Chagas disease were revisited after in-depth updating and the notion that necrosis and fibrosis are stimulated by tissue parasitic persistence and adverse immune reaction, as fundamental mechanisms, assisted by autonomic and microvascular disorders, was well established. Some of them have recently formed potential targets of therapies.&nbsp; The natural history of the acute and chronic phases was reviewed, with enhancement for oral transmission, indeterminate form and chronic syndromes. Recent meta-analyses of observational studies have estimated the risk of evolution from acute and indeterminate forms and mortality after chronic cardiomyopathy. Therapeutic approaches applicable to individuals with Indeterminate form of Chagas disease were specifically addressed. All methods to detect structural and/or functional alterations with various cardiac imaging techniques were also reviewed, with recommendations for use in various clinical scenarios. Mortality risk stratification based on the Rassi score, with recent studies of its application, was complemented by methods that detect myocardial fibrosis.&nbsp; The current methodology for etiological diagnosis and the consequent implications of trypanonomic treatment deserved a comprehensive and in-depth approach. Also the treatment of patients at risk or with heart failure, arrhythmias and thromboembolic events, based on pharmacological and complementary resources, received special attention. Additional chapters supported the conducts applicable to several special contexts, including t. cruzi/HIV co-infection, risk during surgeries, in pregnant women, in the reactivation of infection after heart transplantation, and others.&nbsp; &nbsp;&nbsp; Finally, two chapters of great social significance, addressing the structuring of specialized services to care for individuals with the Cardiomyopathy of Chagas disease, and reviewing the concepts of severe heart disease and its medical-labor implications completed this guideline.Esta diretriz teve como objetivo principal atualizar os conceitos e formular as normas de conduta e evidências científicas que as suportam, quanto ao diagnóstico e tratamento da CDC, com especial ênfase na base de racionalidade que a embasou. A DC no século XXI mantém padrão epidemiológico de endemicidade em 21 países da América Latina. Investigadores e gestores de países endêmicos e não endêmicos indigitam a necessidade de se adotarem políticas abrangentes, de saúde pública, para controle eficaz da transmissão inter-humanos da infecção pelo T. cruzi, e obter-se nível otimizado de atendimento aos indivíduos já infectados, com foco em oportunização diagnóstica e terapêutica. Mecanismos patogênicos e fisiopatológicos da CDC foram revisitados após atualização aprofundada e ficou bem consolidada a noção de que necrose e fibrose sejam estimuladas pela persistência parasitária tissular e reação imune adversa, como mecanismos fundamentais, coadjuvados por distúrbios autonômicos e microvasculares. Alguns deles recentemente constituíram alvos potenciais de terapêuticas. A história natural das fases aguda e crônica foi revista, com realce para a transmissão oral, a forma indeterminada e as síndromes crônicas. Metanálises recentes de estudos observacionais estimaram o risco de evolução a partir das formas aguda e indeterminada e de mortalidade após instalação da cardiomiopatia crônica. Condutas terapêuticas aplicáveis aos indivíduos com a FIDC foram abordadas especificamente. Todos os métodos para detectar alterações estruturais e/ou funcionais com variadas técnicas de imageamento cardíaco também foram revisados, com recomendações de uso nos vários cenários clínicos. Estratificação de risco de mortalidade fundamentada no escore de Rassi, com estudos recentes de sua aplicação, foi complementada por métodos que detectam fibrose miocárdica. A metodologia atual para diagnóstico etiológico e as consequentes implicações do tratamento tripanossomicida mereceram enfoque abrangente e aprofundado. Também o tratamento de pacientes em risco ou com insuficiência cardíaca, arritmias e eventos tromboembólicos, baseado em recursos farmacológicos e complementares, recebeu especial atenção. Capítulos suplementares subsidiaram as condutas aplicáveis a diversos contextos especiais, entre eles o da co-infecção por T. cruzi/HIV, risco durante cirurgias, em grávidas, na reativação da infecção após transplante cardíacos, e outros.&nbsp;&nbsp;&nbsp; Por fim, dois capítulos de grande significado social, abordando a estruturação de serviços especializados para atendimento aos indivíduos com a CDC, e revisando os conceitos de cardiopatia grave e suas implicações médico-trabalhistas completaram esta diretriz.&nbsp