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Nowadays, the use of renewable, green/eco-friendly technologies is attracting the attention of researchers, with a view to overcoming recent challenges that must be faced to guarantee the availability of Electric Vehicles (EVs). Therefore, this work proposes a methodology based on Genetic Algorithms (GA) and multivariate regression for estimating and modeling the State of Charge (SOC) in Electric Vehicles. Indeed, the proposal considers the continuous monitoring of six load-related variables that have an influence on the SOC (State of Charge), specifically, the vehicle acceleration, vehicle speed, battery bank temperature, motor RPM, motor current, and motor temperature. Thus, these measurements are evaluated in a structure comprised of a Genetic Algorithm and a multivariate regression model in order to find those relevant signals that better model the State of Charge, as well as the Root Mean Square Error (RMSE). The proposed approach is validated under a real set of data acquired from a self-assembly Electric Vehicle, and the obtained results show a maximum accuracy of approximately 95.5%; thus, this proposed method can be applied as a reliable diagnostic tool in the automotive industry.

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We report an isolated outbreak of Rickettsia rickettsii in the Ngäbe-Buglé indigenous region, located 750 m (tropical wet) above sea level, in a jungle and mountainous area of Western Panama. Seven members of a family were infected simultaneously, resulting in four deaths. Family outbreaks have been previously described and are responsible for 4-8% of the cases described [1-4]. The simultaneous onset of symptoms in the affected population group is extremely unusual [1,5], but it should not dissuade the clinician from considering the possibility of Rickettsia rickettsii infection.

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Micro cantilever beams have been intensively used in sensing applications including to scanning profiles and surfaces where there resolution and imaging speed are critical. Force resolution is related to the Q-factor. When the micro-cantilever operates in air with small separation gaps, the Q-factor is even more reduced due to the squeeze-film damping effect. Thus, the optimization of the configuration of an AFM micro-cantilever is presented in this work with the objective of improving its Q-factor. To accomplish this task, we propose the inclusion of holes as breathing chimneys in the initial design to reduce the squeeze-film damping effect. The evaluation of the Q-factor was carried out using finite element model, which is implemented to work together with the squeeze-film damping model. The methodology applied in the optimization process was genetic algorithms, which considers as constraints the maximum allowable stress, fundamental frequency and spring constant with respect to the initial design. The results show that the optimum design, which includes holes with an optimal location, increases the Q-factor almost five times compared to the initial design.

RESUMO

Computer numerically controlled (CNC) machines have evolved to adapt to increasing technological and industrial requirements. To cover these needs, new generation machines have to perform monitoring strategies by incorporating multiple sensors. Since in most of applications the online Processing of the variables is essential, the use of smart sensors is necessary. The contribution of this work is the development of a wireless network platform of reconfigurable smart sensors for CNC machine applications complying with the measurement requirements of new generation CNC machines. Four different smart sensors are put under test in the network and their corresponding signal processing techniques are implemented in a Field Programmable Gate Array (FPGA)-based sensor node.

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Manufacturing processes are of great relevance nowadays, when there is a constant claim for better productivity with high quality at low cost. The contribution of this work is the development of a fused smart-sensor, based on FPGA to improve the online quantitative estimation of flank-wear area in CNC machine inserts from the information provided by two primary sensors: the monitoring current output of a servoamplifier, and a 3-axis accelerometer. Results from experimentation show that the fusion of both parameters makes it possible to obtain three times better accuracy when compared with the accuracy obtained from current and vibration signals, individually used.

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Se realizó un estudio prospectivo clínico-terapéutico a 76 pacientes, los cuales fueron tratados con laserpuntura, y con el diagnóstico de dedo en resorte, remitidos de la Consulta Externa del Hospital Militar Central ôDr. Carlos J. Finlayö. Sesenta y tres pacientes correspondieron al sexo femenino, el grupo de edades más afectado fue entre 40 y 60 años, y en el 75 por ciento del total, se obtuvieron resultados satisfactorios. Se exponen los criterios de diagnóstico, los fundamentos para determinar el realizar un proceder quirúrgico o conservador, la acción terapéutica de la acupuntura y de la irradiación con rayos láser y se hace énfasis en nuestra hipótesis de trabajo respecto a la acción sumatoria de ambos procederes, al estimular puntos específicos de acupuntura con rayos láser de baja potencia

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Se realizó galactografía y citología en 30 pacientes con secreción espontánea por el pezón. La secreción hemática fue la mas frecuente (43,3 por ciento). Los cambios fibroquísticos fueron la causa mas común de telorrea diagnosticada por los dos métodos (60 por ciento por galactografía y 56,7 por ciento por citología), los cuales coinciden para el diagnóstico de papiloma en el 50 por ciento de los casos y en el 70,6 por ciento para el diagnóstico de patología benigna no tumoral. La galactografía sigue siendo el método de elección para la evaluación de las pacientes con secreción hemática, reservandose la citología como un exámen complementario

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Se realiza una revisión retrospectiva de 2.812 pacientes con síntomas abdominales, encontrando una prevalencia global de 29,3 por ciento de colelitiasis, con una relación de 6,6 mujeres por 1 hombre. Se resalta el elevado número de pacientes menores de 30 años con colelitiasis (tasa porcentual de 21,78 por ciento) a la vez que se encontró una alta prevalencia en hombres (19,2 por ciento). Una submuestra de 827 pacientes sirvió para el análisis de los tipos de colelitiasis, con 68,8 por ciento para el grado 1, 29 por ciento el grado 2 y 1,2 por ciento del grado 3. Se comparan los resultados con los resportes de otras series de la literatura y se discute el valor del ultrasonido en relación al tratamiento no quirúrgico de la colelitiasis

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Se describen tres casos severos de paracoccidiodomicosis e histoplasmosis en pacientes jovenes (7 a 21 anos) quienes recibieron como tratamiento unico compuestos imidazolicos (ketoconazol 200 mg. itraconazol 100 mg/dia); estos fueron administrados por via oral por periodos variables (14-24 meses). Los pacientes empezaron a mejorar desde los tres primeros meses de terapia, aumentando dicha mejoria con el transcurso del tiempo. Durante la terapia no se detectaron alteraciones en las pruebas hepaticas o hematologicas, como tampoco efectos secundarios significativos. Los controles post-tratamiento han sido llevados a cabo por mas de dos anos sin que se hayan encontrado signos de reactivacion de la micosis. Los resultados clinicos, serologicos y radiologicos obtenidos en los pacientes bajo estudio, permiten aceptar que estos compuestos imidazolicos son una alternativa valiosa para el manejo de casos graves de histoplasmosis y de paracocciodiodomicosis.

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