RESUMEN
Today's cars have dozens of sensors to monitor vehicle performance through different systems, most of which communicate via vehicular networks (CAN). Many of these sensors can be used for applications other than the original ones, such as improving the driver experience or creating new safety tools. An example is monitoring variables that describe the driver's behavior. Interactions with the pedals, speed, and steering wheel, among other signals, carry driving characteristics. However, not always all variables related to these interactions are available in all vehicles; for example, the excursion of the brake pedal. Using an acquisition module, data from the in-vehicle sensors were obtained from the CAN bus, the brake pedal (externally instrumented), and the driver's signals (instrumented with an inertial sensor and electromyography of their leg), to observe the driver and car information and evaluate the correlation hypothesis between these data, as well as the importance of the brake pedal signal not usually available in all car models. Different sets of sensors were evaluated to analyze the performance of three classifiers when analyzing the driver's driving mode. It was found that there are superior results in classifying identity or behavior when driver signals are included. When the vehicle and driver attributes were used, hits above 0.93 were obtained in the identification of behavior and 0.96 in the identification of the driver; without driver signals, accuracy was more significant than 0.80 in identifying behavior. The results show a good correlation between vehicle data and data obtained from the driver, suggesting that further studies may be promising to improve the accuracy of rates based exclusively on vehicle characteristics, both for behavior identification and driver identification, thus allowing practical applications in embedded systems for local signaling and/or storing information about the driving mode, which is important for logistics companies.
Asunto(s)
Conducción de Automóvil , Automóviles , Correlación de Datos , Accidentes de TránsitoRESUMEN
Sign Language recognition systems aid communication among deaf people, hearing impaired people, and speakers. One of the types of signals that has seen increased studies and that can be used as input for these systems is surface electromyography (sEMG). This work presents the recognition of a set of alphabet gestures from Brazilian Sign Language (Libras) using sEMG acquired from an armband. Only sEMG signals were used as input. Signals from 12 subjects were acquired using a MyoTM armband for the 26 signs of the Libras alphabet. Additionally, as the sEMG has several signal processing parameters, the influence of segmentation, feature extraction, and classification was considered at each step of the pattern recognition. In segmentation, window length and the presence of four levels of overlap rates were analyzed, as well as the contribution of each feature, the literature feature sets, and new feature sets proposed for different classifiers. We found that the overlap rate had a high influence on this task. Accuracies in the order of 99% were achieved for the following factors: segments of 1.75 s with a 12.5% overlap rate; the proposed set of four features; and random forest (RF) classifiers.
Asunto(s)
Reconocimiento de Normas Patrones Automatizadas , Lengua de Signos , Electromiografía , Gestos , Humanos , Procesamiento de Señales Asistido por ComputadorRESUMEN
The use of wearable equipment and sensing devices to monitor physical activities, whether for well-being, sports monitoring, or medical rehabilitation, has expanded rapidly due to the evolution of sensing techniques, cheaper integrated circuits, and the development of connectivity technologies. In this scenario, this paper presents a state-of-the-art review of sensors and systems for rehabilitation and health monitoring. Although we know the increasing importance of data processing techniques, our focus was on analyzing the implementation of sensors and biomedical applications. Although many themes overlap, we organized this review based on three groups: Sensors in Healthcare, Home Medical Assistance, and Continuous Health Monitoring; Systems and Sensors in Physical Rehabilitation; and Assistive Systems.
Asunto(s)
Monitoreo Fisiológico , Dispositivos Electrónicos Vestibles , Humanos , RehabilitaciónRESUMEN
Due to the emergence of new microbreweries in the Brazilian market, there is a need to construct equipment to quickly and accurately identify the alcohol content in beverages, together with a reduced marketing cost. Towards this purpose, the electronic noses prove to be the most suitable equipment for this situation. In this work, a prototype was developed to detect the concentration of ethanol in a high spectrum of beers presents in the market. It was used cheap and easy-to-acquire 13 gas sensors made with a metal oxide semiconductor (MOS). Samples with 15 predetermined alcohol contents were used for the training and construction of the models. For validation, seven different commercial beverages were used. The correlation (R2) of 0.888 for the MLR (RMSE = 0.45) and the error of 5.47% for the ELM (RMSE = 0.33) demonstrate that the equipment can be an effective tool for detecting the levels of alcohol contained in beverages.
RESUMEN
O presente relato buscou analisar os índices de prenhez de acordo com o estagio de desenvolvimento embrionário. Todos os embriões tinham sete dias de desenvolvimento e eram provenientes de doadoras da raça Nelore (Bos taurus indicus). O lócus da análise ocorreu no município de Uberaba Minas Gerais no período de agosto a outubro de 2016. Os animais foram submetidos ao mesmo manejo sanitário, alimentar e também ao mesmo protocolo hormonal. Ao todo foram avaliados 443 animais de raças e idades diferentes, trabalhadas como barriga de aluguel na transferência de embrião em tempo fixo. Tendo a fase embrionária blastocisto inicial uma taxa de prenhez de 31,95%, blastocisto 42,27%, blastocisto expandido 48,16%, e blastocisto eclodido 56,66%. A taxa de prenhez média foi de 44,46%. Frente aos resultados obtidos, observou-se que uso de embriões em blastocisto expandido e blastocisto eclodido nas transferências de embrião em tempo fixo resultam em melhores índices de prenhez.
The present report aims to analyze pregnancy rate according to the stageof embryo development at the moment of embryo transfer. All embryos hadseven days of development in vitro and came from Nelore breed (Bostaurus indicus) oocyte donors. The study was performed in Uberaba,Minas Gerais, from August to October 2016. The recipient females wereunder the same sanitary, nutritional and hormonal protocol. In total, 443animals of different breeds and ages have been selected. These femaleswere used as receptors in fixed-time embryo transfer programs. Pregnancyrates of 31.95%, 42.27%, 48.16% and 56.66% were obtained for earlyblastocyst, blastocyst, expanded blastocyst and hatched blastocyst,respectively. The mean pregnancy rate was 44.46%. According to theobtained results, it has been possible to observe that expanded andhatched blastocysts result in better pregnancy rates in fixed-time embryotransfer.
Asunto(s)
Femenino , Animales , Embarazo , Bovinos , Blastocisto , Embrión de Mamíferos , Preñez , Índice de Embarazo , Transferencia de Embrión/veterinariaRESUMEN
O presente relato buscou analisar os índices de prenhez de acordo com o estagio de desenvolvimento embrionário. Todos os embriões tinham sete dias de desenvolvimento e eram provenientes de doadoras da raça Nelore (Bos taurus indicus). O lócus da análise ocorreu no município de Uberaba Minas Gerais no período de agosto a outubro de 2016. Os animais foram submetidos ao mesmo manejo sanitário, alimentar e também ao mesmo protocolo hormonal. Ao todo foram avaliados 443 animais de raças e idades diferentes, trabalhadas como barriga de aluguel na transferência de embrião em tempo fixo. Tendo a fase embrionária blastocisto inicial uma taxa de prenhez de 31,95%, blastocisto 42,27%, blastocisto expandido 48,16%, e blastocisto eclodido 56,66%. A taxa de prenhez média foi de 44,46%. Frente aos resultados obtidos, observou-se que uso de embriões em blastocisto expandido e blastocisto eclodido nas transferências de embrião em tempo fixo resultam em melhores índices de prenhez.(AU)
The present report aims to analyze pregnancy rate according to the stageof embryo development at the moment of embryo transfer. All embryos hadseven days of development in vitro and came from Nelore breed (Bostaurus indicus) oocyte donors. The study was performed in Uberaba,Minas Gerais, from August to October 2016. The recipient females wereunder the same sanitary, nutritional and hormonal protocol. In total, 443animals of different breeds and ages have been selected. These femaleswere used as receptors in fixed-time embryo transfer programs. Pregnancyrates of 31.95%, 42.27%, 48.16% and 56.66% were obtained for earlyblastocyst, blastocyst, expanded blastocyst and hatched blastocyst,respectively. The mean pregnancy rate was 44.46%. According to theobtained results, it has been possible to observe that expanded andhatched blastocysts result in better pregnancy rates in fixed-time embryotransfer.(AU)
Asunto(s)
Animales , Femenino , Embarazo , Bovinos , Preñez , Blastocisto , Índice de Embarazo , Embrión de Mamíferos , Transferencia de Embrión/veterinariaRESUMEN
The objective of this work was to evaluate the relationship between sperm head morphometry and chromatin packaging with the cleavage ratio and blastocyst formation during in vitro fertilization programs (IVF). Data of 38 IVFs using semen of zebu bulls with normal spermogram, carried out at two laboratories in Uberaba, Minas Gerais, Brazil, were used in this study. Sperm smears stained with toluidine blue and analyzed by computer image analysis were used to evaluate the morphometry and chromatin packaging. The packaging intensity and homogeneity of sperm chromatin were evaluated. The results made it possible to conclude that light variations in the head morphometry and chromatin packaging had little influence on the cleavage and number of morphologically normal blastocysts during IVF.
O objetivo deste trabalho foi avaliar a relação entre a morfometria da cabeça do espermatozoide e a compactação da cromatina com as taxas de clivagem e formação de blastocisto em programas de produção de embriões in vitro (PIV). Neste estudo foram utilizados dados de 38 rotinas de PIVs com sêmen de touros zebuínos com espermograma de rotina normal, realizadas em dois diferentes laboratórios de Uberaba, Minas Gerais, Brasil. Para avaliar a morfometria e compactação da cromatina, foram usados esfregaços de sêmen corados com azul de toluidina e avaliados por análise de imagem computacional. A cromatina foi avaliada quanto à intensidade de compactação e homogeneidade. Os resultados permitem concluir que pequenas variações na morfometria da cabeça e na compactação da cromatina espermática pouco influenciam a clivagem e o número de blastocistos morfologicamente normais na PIV.
RESUMEN
The objective of this work was to evaluate the relationship between sperm head morphometry and chromatin packaging with the cleavage ratio and blastocyst formation during in vitro fertilization programs (IVF). Data of 38 IVFs using semen of zebu bulls with normal spermogram, carried out at two laboratories in Uberaba, Minas Gerais, Brazil, were used in this study. Sperm smears stained with toluidine blue and analyzed by computer image analysis were used to evaluate the morphometry and chromatin packaging. The packaging intensity and homogeneity of sperm chromatin were evaluated. The results made it possible to conclude that light variations in the head morphometry and chromatin packaging had little influence on the cleavage and number of morphologically normal blastocysts during IVF.
O objetivo deste trabalho foi avaliar a relação entre a morfometria da cabeça do espermatozoide e a compactação da cromatina com as taxas de clivagem e formação de blastocisto em programas de produção de embriões in vitro (PIV). Neste estudo foram utilizados dados de 38 rotinas de PIVs com sêmen de touros zebuínos com espermograma de rotina normal, realizadas em dois diferentes laboratórios de Uberaba, Minas Gerais, Brasil. Para avaliar a morfometria e compactação da cromatina, foram usados esfregaços de sêmen corados com azul de toluidina e avaliados por análise de imagem computacional. A cromatina foi avaliada quanto à intensidade de compactação e homogeneidade. Os resultados permitem concluir que pequenas variações na morfometria da cabeça e na compactação da cromatina espermática pouco influenciam a clivagem e o número de blastocistos morfologicamente normais na PIV.
RESUMEN
Pielonefrite enfisematosa é uma rara complicação após o transplante renal. Este é um relato de caso de uma paciente diabética de 42 anos de idade, do sexo feminino, que se apresentou após uma semana de tratamento de infecção do trato urinário causada por Escherichia coli, referindo uma massa palpável sobre o enxerto. A tomografia computadorizada de abdome mostrou coleção perirrenal contendo ar. Tratada com antibióticos e drenagem percutânea. Após 20 dias de drenagem, recebeu alta hospitalar com função renal estável.
Emphysematous pyelonephritis is a rare post renal transplant complication. This is a case report of a 42 year-old diabetic female, who presented a urinary tract infection caused by Escherichia coli and a palpable mass above the graft approximately 1 week after treatmtent, A computer tomography scan of the abdomen showed peri-renal collection containing air. The patient was treated with antibiotics and a percutaneous nephrostomy was performed. After 20 days of drainage, renal function was considered stable and she was discharged from the hospital.
Asunto(s)
Humanos , Femenino , Adulto , Diabetes Mellitus/patología , Pielonefritis/diagnóstico , Pielonefritis/etiología , Pielonefritis/terapia , Pielonefritis , Sistema Urinario/patología , Trasplante de Riñón/efectos adversos , Trasplante de RiñónRESUMEN
Os autores apresentam dois casos de fístula congênita do lábio inferior. Estudam a hereditariedade, associaçäo com a fissura labiopalatina, aspectos histológicos e tratamento