Resumo Introdução: O uso da ultrassonografia no local de atendimento (PoCUS) tem ganhado relevância na prática médica, melhorando a capacidade diagnóstica e a segurança do paciente. Contudo, no Uruguai, o treinamento PoCUS para internistas é limitado. O objetivo é concretizar a implementação da formação PoCUS para os cursos de pós-graduação em Medicina Interna. Metodologia: Foi criado um curso-oficina dividido em módulos por sistemas e protocolos clínicos. Bibliografia e material audiovisual foram fornecidos aos participantes. Foram utilizados aparelhos de ultrassom portáteis sem fio e modelos voluntários. Foram realizados testes diagnósticos de conhecimento, avaliações clínicas objetivas estruturadas e pesquisas de satisfação. Resultados: 30 dos 32 participantes concluíram e foram aprovados no curso. A pesquisa de satisfação mostrou alta avaliação dos objetivos do curso, logística e instrutores. Houve uma melhoria estatisticamente significativa no conhecimento do PoCUS entre o pré e o pós-teste (54,72% vs. 82,5%). A avaliação final teve média de aprovação de 92%, com uma única exceção que exigiu recuperação. Discussão: A formação PoCUS em Medicina Interna é considerada valiosa, mas o seu desenvolvimento é limitado no Uruguai. A implementação de um curso estruturado demonstrou melhorias no conhecimento e elevados níveis de satisfação. Foi comparado com outros cursos de habilidades clínicas com resultados semelhantes. A curva de aprendizado para diferentes órgãos varia, destacando a necessidade de monitoramento contínuo. Conclusões: Altos níveis de satisfação dos participantes foram obtidos com resultados positivos em conhecimentos e habilidades. Acreditamos que é importante continuar investigando a curva de aprendizagem pós-curso.

Resumen: Introducción: El uso de la ultrasonografía en el punto de atención (PoCUS) ha ganado relevancia en la práctica médica, mejorando la capacidad diagnóstica y la seguridad de los pacientes. Sin embargo, en Uruguay, la formación en PoCUS para médicos internistas es limitada. El objetivo es lograr la implementación de la formación de PoCUS en los posgrados de Medicina Interna. Metodología: Se creó un curso-taller dividido en módulos por sistemas y protocolos clínicos. Se proporcionó bibliografía y material audiovisual a los participantes. Se utilizaron ecógrafos portátiles inalámbricos y modelos voluntarios. Se realizaron pruebas de conocimiento diagnósticas, evaluaciones clínicas objetivas estructuradas y encuestas de satisfacción. Resultados: 30 de los 32 participantes completaron y aprobaron el curso. La encuesta de satisfacción mostró una alta evaluación de los objetivos del curso, la logística y los instructores. Hubo una mejora estadísticamente significativa en el conocimiento de PoCUS entre el pre y post test (54.72% vs. 82.5%). La evaluación final tuvo una media de aprobación del 92%, con una sola excepción que requirió recuperación. Discusión: La formación en PoCUS en Medicina Interna es percibida como valiosa, pero su desarrollo es limitado en Uruguay. La implementación de un curso estructurado demostró mejoras en conocimientos y altos niveles de satisfacción. Se comparó con otros cursos de habilidades clínicas con resultados similares. La curva de aprendizaje para diferentes órganos varía, lo que destaca la necesidad de un seguimiento continuo. Conclusiones: Se obtuvieron altos niveles de satisfacción de los participantes con resultados de conocimientos y destrezas positivos. Creemos que es de importancia seguir investigando la curva de aprendizaje posterior al curso.

Abstract Introduction: The use of point-of-care ultrasound (PoCUS) has gained relevance in medical practice, improving diagnostic capacity and patient safety. However, in Uruguay, PoCUS training for internal medicine physicians is limited. The objective is to achieve the implementation of PoCUS training in Internal Medicine postgraduate courses. Methodology: A course-workshop was created divided into modules by clinical systems and protocols. Bibliography and audiovisual material were provided to participants. Wireless portable ultrasound machines and voluntary models were used. Diagnostic knowledge tests, structured objective clinical evaluations, and satisfaction surveys were conducted. Results: 30 of the 32 participants completed and passed the course. The satisfaction survey showed a high evaluation of the course objectives, logistics, and instructors. There was a statistically significant improvement in PoCUS knowledge between the pre and post test (54.72% vs. 82.5%). The final assessment had an average passing rate of 92%, with only one exception requiring retake. Discussion: PoCUS training in Internal Medicine is perceived as valuable, but its development is limited in Uruguay. The implementation of a structured course demonstrated improvements in knowledge and high levels of satisfaction. It was compared with other clinical skills courses with similar results. The learning curve for different organs varies, highlighting the need for continued monitoring. Conclusions: High levels of satisfaction were obtained from participants with positive knowledge and skills results. We believe that it is important to continue investigating the learning curve after the course.

SUMMARY: The rapid advancement of the Internet of Things (IoT) has transformed our lives by connecting objects and creating an intelligent environment that drives automation and massive data collection. IoT has overcome challenges through remote monitoring, robotics, and sensors, with powerful wireless technologies opening up possibilities in various fields, including anatomical techniques. The objective of this study is to demonstrate the feasibility and benefits of integrating IoT technology into the body maceration process by developing a low-cost, accessible, automated maceration control device compatible with theArduino IDE programming environment. Using an open-source NodeMCU system based on the ESP-12E chip, which employs the LUA programming language and is compatible with Arduino IDE, we incorporated a microSD card reader module for data storage, a digital temperature sensor (DS18B20), a clock module (DS3231), a magnetic stirrer, and an aquarium heater controlled by a digital thermostat with relay (W1209). To validate the device, we conducted maceration tests on C57BL mice, comparing two groups: Control (n=5; weight=17g) subjected to maceration in 4 liters of water at 10°C without agitation; Experimental (n=5; weight=17g) exposed to maceration in 4 liters of water at 35°C, with agitation at 1500 r/min and water flow renewal at a rate of 900 ml/h. Specimens were evaluated for their degree of maceration, cleaned, weighed, and photographed. The maceration time for the control and experi- mental groups was 730 hours and 60 hours, respectively. In the experimental group, no foul odors, damage, or bone demineralization were detected. The device cost was 60 USD, and programming through the Arduino IDE environment was straightforward. The focus on hardware contributed to accessibility and time savings. The system operated with a conventional power supply and required a water supply, making it adaptable to various configurations with greater capacity. Under this configuration, we effectively controlled the variables (temperature, agitation, and water flow). The NodeMCU-based bone maceration system improved the performance and adaptability of existing systems and increased accessibility by reducing costs, complexity, and foul odors.

RESUMEN: El rápido avance del Internet de las Cosas (IoT) ha transformado nuestras vidas al conectar objetos y crear un entorno inteligente que impulsa la automatización y la recolección masiva de datos. El IoT ha superado desafíos a través del monitoreo remoto, la robótica y los sensores, con tecnologías inalámbricas potentes que abren posibilidades en diversos campos, incluidas la anatomía y las técnicas anatómicas. El objetivo de este estudio fue demostrar la viabilidad y los beneficios de integrar la tecnología IoT en el proceso de maceración cadavérica mediante el desarrollo de un dispositivo de control de maceración automatizado, accesible y de bajo costo, compatible con el entorno de programación Arduino IDE. Usando un sistema NodeMCU de código abierto basado en el chip ESP-12E, que emplea el lenguaje de programación LUA y es compatible con Arduino IDE, incorporamos un módulo lector de tarjetas microSD para el almacenamiento de datos, un sensor de temperatura digital (DS18B20), un módulo de reloj (DS3231), un agitador magnético y un calentador de acuario controlado por un termostato digital con relé (W1209). Para validar el dispositivo, realizamos pruebas de maceración en ratones C57BL, comparando dos grupos: control (n=5; peso=17g) sometido a maceración en 4 litros de agua a 10°C sin agitación; experimental (n=5; peso=17g) expuesto a maceración en 4 litros de agua a 35°C, con agitación a 1500 r/min y renovación del flujo de agua a una velocidad de 900 ml/h. Los especímenes fueron evaluados según su grado de maceración, limpiados, pesados y fotografiados. El tiempo de maceración para los grupos control y experimental fue de 730 horas y 60 horas, respectivamente. En el grupo experimental no se detectaron malos olores, daños ni desmineralización de los huesos. El costo del dispositivo fue de 60 USD y la programación a través del entorno Arduino IDE fue sencilla. El enfoque en el hardware contribuyó a la accesibilidad y al ahorro de tiempo. El sistema operaba con una fuente de alimentación convencional y requería un suministro de agua, lo que lo hace adaptable a diversas configuraciones con mayor capacidad. Bajo esta configuración, controlamos eficazmente las variables (temperatura, agitación y flujo de agua). El sistema de maceración ósea basado en NodeMCU mejoró el rendimiento y la adaptabilidad de los sistemas existentes, y aumentó la accesibilidad al reducir los costos, la complejidad y los malos olores.

Abstract: This document reviews microstrip antennas used in wireless energy transfer and collection systems in microwave bands, based on their technical and structural parameters. The foregoing will allow the identification of outstanding aspects in the use of the different antenna configurations and suggest future lines of research that contribute to the development of this area. For this, a literature review of research articles, papers presented at conferences and symposiums, among others, is carried out which allows knowing the different existing proposals around the subject of study. As a result, it is found that there is a great variety of configurations and techniques for the design of these antennas, with which the radiation pattern can be modified, and the gain improved. It is concluded then that there is no defined construction pattern to obtain the ideal antenna. However, a research perspective is opened to establish and evaluate new structures and materials for the optimization of this type of antennas used in the collection of RF energy as another alternative for the charging of low power devices and the development of the internet of things (IoT) technology.

Resumen: En este documento, se realiza una revisión de las antenas de microcinta utilizadas en sistemas de transferencia y captación de energía electromagnética radiada en las bandas de microondas, en función de sus parámetros técnicos y estructurales. Lo anterior permitirá identificar aspectos destacados en el empleo de las distintas configuraciones de antenas y sugerir líneas de investigación futuras que contribuyan con el desarrollo de esta área. Para ello, se realiza una revisión de literatura de artículos de investigación, trabajos presentados en conferencias y simposios, entre otros, que permitan conocer las diferentes propuestas existentes en torno al tema de estudio. Como resultado, se encuentra que existe una gran variedad de configuraciones y técnicas para el diseño de estas antenas, con los cuales se puede modificar el patrón de radiación y mejorar la ganancia. Se concluye entonces, que no existe un patrón definido de construcción para obtener la antena ideal. Sin embargo, se abre una perspectiva a la investigación para establecer y evaluar nuevas estructuras y materiales para la optimización de este tipo de antenas utilizadas en la recolección de energía de RF como otra alternativa para la carga de dispositivos de baja potencia y el desarrollo de la tecnología de internet de las cosas (IoT).

ABSTRACT Industry 4.0 has revolutionised the way industries around the world operate, enabling greater efficiency and process optimisation. However, for many in developing countries, such as Cuba, the cost of implementing advanced technologies can be a significant challenge. In this context, the Velkys controller, developed by the company AlaSoluciones, is presented as a low-cost solution to boost the development of Industry 4.0 in the country. The aim of this article is to demonstrate the capabilities of the Velkys controller, presenting the hardware and software development of the device. The main element used is the ESP32 microcontroller, which provides wireless connection via Wifi and Bluetooth, as well as powerful processing capabilities. The controller firmware is based on the real-time operating system (FreeRTOS), ensuring efficient and reliable operation. This solution simplifies the transition to Industry 4.0 in contexts where the level of risk associated with the process is not extreme, such as in light manufacturing and agribusiness, among others, representing a viable and economical alternative to promote automation in Cuban industry.

RESUMEN La Industria 4.0 ha revolucionado la forma en que operan las industrias en todo el mundo, permitiendo una mayor eficiencia y optimización de los procesos. Sin embargo, para muchos países en desarrollo, como Cuba, el costo de implementar tecnologías avanzadas puede ser un desafío significativo. En este contexto, el controlador Velkys, desarrollado por la empresa AlaSoluciones, se presenta como una solución de bajo costo para impulsar el desarrollo de la Industria 4.0 en el país. El objetivo de este artículo es demostrar las capacidades del controlador Velkys, presentando el desarrollo hardware y software del dispositivo. Se utiliza como elemento principal el microcontrolador ESP32, el cual provee de conexión inalámbrica mediante Wifi y Bluetooth, así como una potente capacidad de procesamiento. El firmware del controlador se basa en el sistema operativo en tiempo real (FreeRTOS), asegurando una operación eficiente y confiable. Esta solución simplifica la transición hacia la Industria 4.0 en contextos donde el nivel de riesgo asociado con el proceso no sea extremo, como en la manufactura liviana y la agroindustria, entre otros, representando una alternativa viable y económica para promover la automatización en la industria cubana.

Abstract The objective of this research is to present a comparative analysis using various lengths of time windows (TW) during emotion recognition, employing machine learning techniques and the portable wireless sensing device EPOC+. In this study, entropy will be utilized as a feature to evaluate the performance of different classifier models across various TW lengths, based on a dataset of EEG signals extracted from individuals during emotional stimulation. Two types of analyses were conducted: between-subjects and within-subjects. Performance measures such as accuracy, area under the curve, and Cohen's Kappa coefficient were compared among five supervised classifier models: K-Nearest Neighbors (KNN), Support Vector Machine (SVM), Logistic Regression (LR), Random Forest (RF), and Decision Trees (DT). The results indicate that, in both analyses, all five models exhibit higher performance in TW ranging from 2 to 15 seconds, with the 10 seconds TW particularly standing out for between-subjects analysis and the 5-second TW for within-subjects; furthermore, TW exceeding 20 seconds are not recommended. These findings provide valuable guidance for selecting TW in EEG signal analysis when studying emotions.

Resumen El objetivo de esta investigación es presentar un análisis comparativo empleando diversas longitudes de ventanas de tiempo (VT) durante el reconocimiento de emociones, utilizando técnicas de aprendizaje automático y el dispositivo de sensado inalámbrico portátil EPOC+. En este estudio, se utilizará la entropía como característica para evaluar el rendimiento de diferentes modelos clasificadores en diferentes longitudes de VT, basándose en un conjunto de datos de señales EEG extraídas de individuos durante la estimulación de emociones. Se llevaron a cabo dos tipos de análisis: entre sujetos e intra-sujetos. Se compararon las medidas de rendimiento, tales como la exactitud, el área bajo la curva y el coeficiente de Cohen's Kappa, de cinco modelos clasificadores supervisados: K-Nearest Neighbors (KNN), Support Vector Machine (SVM), Logistic Regression (LR), Random Forest (RF) y Decision Trees (DT). Los resultados indican que, en ambos análisis, los cinco modelos presentan un mayor rendimiento en VT de 2 a 15 segundos, destacándose especialmente la VT de 10 segundos para el análisis entre los sujetos y 5 segundos intrasujetos; además, no se recomienda utilizar VT superiores a 20 segundos. Estos hallazgos ofrecen una orientación valiosa para la elección de las VT en el análisis de señales EEG al estudiar las emociones.

Visible light communication is a present technology which allows data to be transmitted by modulating information onto a light source. It has many advantages over traditional radio frequency communication and up to 10,000 times larger bandwidth. Many existing research in visible light communication assumes a synchronized channel, however, this is not always easily achieved. This paper proposes a novel synchronized VLC system with the potential to ensure reliable communication in both intra- and inter-vehicle communication. The protocol achieves synchronization at the symbol level using the transistor-transistor logic protocol and achieves frame synchronizations with markers. Consequently, the deployment of the system in both intra- and inter-vehicle communication may present numerous advantages over existing data transmission processes. A practical application where visible light communication is used for media streaming is also previewed. In addition, various regions of possible data transmission are determined to infer forward error correction schemes to ensure reliable communication.

Abstract This paper presents a study on Active Frenquency Selective Surface (AFSS) for applications in modern wireless communication systems. Initially, an FSS with an element inspired by convoluted metallic lines printed on a dielectric substrate of FR-4 is proposed. The unit cell size is equal to 10.2 % of the wavelength in free space for the frequency of 1.53 GHz. An equivalent circuit model is proposed to better understand the operating principle of the FSS. Four Schottky diodes have been inserted in a symmetrical manner for switching, and three operating states are analyzed (all diodes in off state, all diodes directly polarized and therefore conducting, and two diodes conducting and two diodes off). The reconfiguration allows the frequency response to vary between frequencies from 0.8 GHz to 2.5 GHz. The FSS proved to be stable with respect to the angle of incidence of the plane wave on the circuit surface. The simulated numerical results for the designed prototype was obtained by ANSYS HFSS software. The prototype was built and the experimental characterization of the transmission coefficients, bandwidth and resonance frequency was performed. The values obtained in the experiment were compared and discussed with the simulation results, which showed good agreement. AFSS (AFSS systems Initially FR4 FR 4 FR- 102 10 2 10. 153 1 53 1.5 switching state off. . off) 08 0 8 0. 25 5 2. surface software coefficients performed agreement 15 1.

ABSTRACT Objectives: This study primarily aimed to investigate the clinical determinants of the Modified Incremental Step Test (MIST) in adults with non-cystic fibrosis bronchiectasis (NCFB). A secondary objective was to compare the cardiopulmonary responses after the MIST and Incremental Shuttle Walk Test (ISWT), two commonly adopted symptom-limited maximum field tests in chronic respiratory diseases. Methods: Forty-six patients with clinically stable bronchiectasis participated in this cross-sectional study. MIST and ISWT were performed to determine exercise capacity, while disease severity, fatigue, and quality of life were assessed using the Bronchiectasis Severity Index (BSI), the Fatigue Severity Scale (FSS), and St. George’s Respiratory Questionnaire (SGRQ), respectively. Quadriceps muscle strength was evaluated using a hand-held dynamometer, walking speed with a wireless inertial sensing device, and the level of physical activity (steps/day) with a pedometer. Results: The BSI score, quadriceps muscle strength, daily step count, and the SGRQ total score explained 61.9% of the variance in the MIST (p < 0.001, R2 = 0.67, AR2 = 0.619). The BSI score (r = -0.412, p = 0.004), quadriceps muscle strength (r = 0.574, p = 0.001), daily step count (r = 0.523, p < 0.001), walking speed (r = 0.402, p = 0.006), FSS score (r = -0.551, p < 0.001), and SGRQ total score (r = -0.570, p < 0.001) correlated with the MIST. The patients achieved higher heart rates (HR), HR%, desaturation, dyspnea, and leg fatigue in the MIST compared to the ISWT (p < 0.05). Conclusions: Disease severity, quadriceps muscle strength, physical activity level, and quality of life were determinants of MIST. The advantages of the MIST, including higher cardiopulmonary response than ISWT and greater portability, which facilitates its use in various settings, make MIST the preferred choice for investigating symptom-limited exercise capacity in patients with NCFB. Objectives (MIST noncystic non cystic NCFB . (NCFB) ISWT, , (ISWT) symptomlimited symptom limited diseases Methods Fortysix Forty six crosssectional cross sectional severity BSI, (BSI) FSS, (FSS) St Georges George s SGRQ, (SGRQ) respectively handheld hand held dynamometer device steps/day stepsday steps day (steps/day pedometer Results 619 61 9 61.9 0001 0 001 0.001 R 067 67 0.67 AR 0.619. 0619 0.619 0.619) r 0.412, 0412 412 -0.412 0.004, 0004 0.004 004 0.004) 0574 574 0.574 0523 523 0.523 0402 402 0.402 0.006, 0006 0.006 006 0.006) 0.551, 0551 551 -0.551 0.570, 0570 570 -0.570 HR, HR (HR) HR% desaturation dyspnea 0.05. 005 0.05 05 0.05) Conclusions portability settings (NCFB (ISWT (BSI (FSS (SGRQ 6 61. 000 00 0.00 06 0.6 061 0.61 0.412 041 41 -0.41 057 57 0.57 052 52 0.52 040 40 0.40 0.551 055 55 -0.55 0.570 -0.57 (HR 0.0 0. 0.41 04 4 -0.4 5 0.5 0.4 0.55 -0.5 -0. -0 -

RESUMO Objetivos: Este estudo teve como objetivo principal investigar os determinantes clínicos do Teste do Degrau Incremental Modificado (TDIM) em adultos com bronquiectasia não fibrocística (BNFC). Um objetivo secundário foi comparar as respostas cardiopulmonares após o TDIM e o Teste Graduado de Caminhada (TGC), dois testes de campo máximos amplamente adotados e limitados por sintomas em doenças respiratórias crônicas. Métodos: Quarenta e seis pacientes com bronquiectasia clinicamente estável participaram deste estudo transversal. O TDIM e TGC foram realizados para determinar a capacidade de exercício, enquanto a gravidade da doença, fadiga e qualidade de vida foram avaliadas usando o Índice de Gravidade da Bronquiectasia (BSI), a Escala de Gravidade da Fadiga (FSS) e o Questionário Respiratório de Saint George (SGRQ), respectivamente. A força muscular do quadríceps foi avaliada usando um dinamômetro manual, a velocidade de caminhada com um dispositivo de sensor inercial sem fio e o nível de atividade física (passos/dia) com um pedômetro. Resultados: O escore BSI, a força muscular do quadríceps, a contagem diária de passos e o escore total do SGRQ explicaram 61,9% da variação no TDIM (p < 0,001, R2 = 0,67, AR2 = 0,619). O escore BSI (r = -0,412, p = 0,004), a força muscular do quadríceps (r = 0,574, p = 0,001), a contagem diária de passos (r = 0,523, p < 0,001), a velocidade de caminhada (r = 0,402, p = 0,006), o escore FSS (r = -0,551, p < 0,001) e o escore total do SGRQ (r = -0,570, p < 0,001) correlacionaram-se com o TDIM. Os pacientes atingiram maiores frequências cardíacas (FC), FC%, dessaturação, dispneia e fadiga nas pernas no TDIM em comparação com o TGC (p < 0,05). Conclusões: A gravidade da doença, a força muscular do quadríceps, o nível de atividade física e a qualidade de vida foram determinantes do TDIM. As vantagens do TDIM, incluindo uma resposta cardiopulmonar mais elevada que no TGC e maior portabilidade, que facilita sua utilização em diversos ambientes, fazem do TDIM a escolha preferencial para investigar a capacidade de exercício limitada por sintomas em pacientes com BNFC. Objetivos (TDIM BNFC . (BNFC) TGC, , (TGC) crônicas Métodos transversal doença (BSI) (FSS SGRQ, (SGRQ) respectivamente manual passos/dia passosdia dia (passos/dia pedômetro Resultados 619 61 9 61,9 0001 0 001 0,001 R 067 67 0,67 AR 0,619. 0619 0,619 0,619) r 0,412, 0412 412 -0,412 0,004, 0004 0,004 004 0,004) 0574 574 0,574 0523 523 0,523 0402 402 0,402 0,006, 0006 0,006 006 0,006) 0,551, 0551 551 -0,551 0,570, 0570 570 -0,570 correlacionaramse correlacionaram se FC, FC (FC) FC% dessaturação 0,05. 005 0,05 05 0,05) Conclusões portabilidade ambientes (BNFC (TGC (BSI (SGRQ 6 61, 000 00 0,00 06 0,6 061 0,61 0,412 041 41 -0,41 057 57 0,57 052 52 0,52 040 40 0,40 0,551 055 55 -0,55 0,570 -0,57 (FC 0,0 0, 0,41 04 4 -0,4 5 0,5 0,4 0,55 -0,5 -0, -0 -

ABSTRACT Purpose This study aimed to evaluate the contribution of assistive listening technology with wireless connectivity in cochlear implant (CI) users in reverberating and noise situations. Methods Prospective cross-sectional study approved by the Institutional Ethics Committee (CAAE 8 3031418.4.0000.0068). Adolescents and adults CI users with pre- or post-lingual deafness were selected. For bilateral users, each ear was assessed separately. Speech recognition was assessed using recorded lists of disyllabic words presented at 65 dBA at 0° azimuth with and without the Wireless Mini Microphone 2 (Cochlear™) connected to the Nucleus®6 speech processor. Room reverberation was measured as 550 ms. To assess the contribution of the assistive listening device (ALD) in a reverberating environment, speech recognition was assessed in quiet. To assess the contribution of the ALD in reverberation and noise, speech recognition was presented at 0° azimuth along with the noise coming from 8 loudspeakers symmetrically arranged 2 meters away from the center with multi-talker babble noise using signal to noise ratio of +10dB. To avoid learning bias or fatigue, the order of the tests was randomized. Comparison of means was analyzed by t test for paired samples, adopting significance level of p <0.005. Results Seventeen patients with a mean age of 40 years were invited and agreed to participate, with 2 bilateral participants, totaling 19 ears assessed. There was a significant positive contribution from the Mini Mic2 in reverberation, and noise+reverberation (p <0.001). Conclusion ALD was able to improve speech recognition of CI users in both reverberation and noisy situations. (CI situations crosssectional cross sectional CAAE 3031418.4.0000.0068. 3031418400000068 3031418.4.0000.0068 . 3031418 4 0000 0068 3031418.4.0000.0068) pre postlingual post lingual selected separately 6 0 Cochlear™ Cochlear (Cochlear™ Nucleus6 Nucleus Nucleus® processor 55 ms (ALD environment quiet multitalker multi talker 10dB dB +10dB fatigue randomized samples 0005 005 <0.005 participate participants 1 Mic noisereverberation <0.001. 0001 <0.001 001 <0.001) 303141840000006 3031418.4.0000.006 303141 000 006 (Cochlear 5 00 <0.00 30314184000000 3031418.4.0000.00 30314 <0.0 3031418400000 3031418.4.0000.0 3031 <0. 303141840000 3031418.4.0000. 303 <0 30314184000 3031418.4.0000 30 < 3031418400 3031418.4.000 3 303141840 3031418.4.00 30314184 3031418.4.0 3031418.4. 3031418.4 3031418.

RESUMO Objetivo Avaliar a contribuição da tecnologia de escuta assistida em usuários de implante coclear (IC) em situações de reverberação e ruído. Métodos Estudo transversal prospectivo aprovado pelo Comitê de Ética Institucional (CAAE 8 3031418.4.0000.0068). Foram selecionados adolescentes e adultos usuários de IC com surdez pré ou pós-lingual. Para usuários bilaterais, cada orelha foi avaliada separadamente. O reconhecimento de fala foi avaliado por meio de listas gravadas de palavras dissílabas apresentadas a 65 dBA a 0° azimute com e sem o Mini Microfone2 (Cochlear™) conectado ao processador de fala Nucleus®6. A reverberação da sala foi medida como 550 ms. Para avaliar a contribuição do dispositivo de escuta assistida (DEA) em ambiente reverberante, o reconhecimento de fala foi avaliado no silêncio. Para avaliar a contribuição do DEA em reverberação e ruído, o reconhecimento de fala foi apresentado a 0° azimute com o ruído proveniente de 8 alto-falantes dispostos simetricamente a 2 metros de distância do centro com ruído de múltiplos falantes usando relação sinal-ruído de +10dB. Para evitar viés de aprendizado ou fadiga, a ordem dos testes foi randomizada. A comparação das médias foi analisada pelo teste t para amostras pareadas, adotando-se nível de significância de p<0,005. Resultados Dezessete pacientes com idade média de 40 anos foram convidados e concordaram em participar, sendo 2 participantes bilaterais, totalizando 19 orelhas. Houve contribuição positiva significante do Mini Mic2 na reverberação e ruído+reverberação (p<0,001). Conclusão DEA foi capaz de melhorar o reconhecimento de fala de usuários de IC tanto em situações de reverberação quanto ruidosas. (IC CAAE 3031418.4.0000.0068. 3031418400000068 3031418.4.0000.0068 . 3031418 4 0000 0068 3031418.4.0000.0068) póslingual. póslingual pós lingual. lingual pós-lingual bilaterais separadamente 6 0 Microfone Cochlear™ Cochlear (Cochlear™ Nucleus6 Nucleus Nucleus®6 55 ms (DEA reverberante silêncio altofalantes alto sinalruído sinal 10dB dB +10dB fadiga randomizada pareadas adotandose adotando se p0005 p 005 p<0,005 participar 1 orelhas Mic ruídoreverberação p<0,001. p0001 p<0,001 001 (p<0,001) ruidosas 303141840000006 3031418.4.0000.006 303141 000 006 (Cochlear Nucleus® 5 p000 00 p<0,00 (p<0,001 30314184000000 3031418.4.0000.00 30314 p00 p<0,0 (p<0,00 3031418400000 3031418.4.0000.0 3031 p0 p<0, (p<0,0 303141840000 3031418.4.0000. 303 p<0 (p<0, 30314184000 3031418.4.0000 30 p< (p<0 3031418400 3031418.4.000 3 (p< 303141840 3031418.4.00 (p 30314184 3031418.4.0 3031418.4. 3031418.4 3031418.

Abstract Mobile radio channel and its effects on the radio link path place fundamental limitations on the performance of wireless communication systems. This paper sets out a new approach for wideband modeling of mobile radio channels to classify distinct environments. It applies the hidden Markov model technique to different data sets of the main temporal dispersion parameters of the mobile radio channel: average delay and delay spread. The applied technique has proven to design properly the transitions among those temporal dispersion parameters, mapping statistically the transitions from one point in space to another, and it has revealed to be a feasible option to classify and describe statistically the wideband radio channel in each propagation medium. systems environments spread another medium

Abstract The development of radio frequency circuits is currently guided mainly through two objectives, which are size reduction and performance improvement of devices. Within a reception or transmission channel, the division and/or combination of power are the most delicate stages due to their large dimensions and high insertion losses, particularly in the case of dividers/combiners based on planar technologies. In this context, this study proposes an analysis and design of a new broadband power divider and combiner using stepped impedance. The power divider/combiner developed is designed to cover a broad frequency spectrum ranging from 1 GHz to 4 GHz, including wireless applications such as Global Mobile Communications Systems (GSM), Industrial, Scientific and Medical (ISM), and Sub-6 GHz 5th Generation (5G) applications. The proposed circuit was analyzed using the stepped transmission line impedance method and designed by Advanced Design System (ADS) on an Epoxy-FR4 substrate with a dielectric constant of 4.4 and a thickness of 1.58 mm. The achieved results showed excellent characteristics in terms of transmission across the input and output terminals, mismatches at all three terminals, and isolation among output terminals. A prototype was built and the measured results showed good agreement with those obtained by simulation. objectives devices channel andor losses dividerscombiners dividers combiners technologies context dividercombiner GSM, GSM , (GSM) Industrial ISM, ISM (ISM) Sub6 Sub 6 Sub- th 5G G (5G ADS (ADS EpoxyFR4 EpoxyFR Epoxy FR4 FR Epoxy-FR 44 4. 158 58 1.5 mm terminals simulation (GSM (ISM 15 5 1.

Abstract In this paper, the application of AI and machine learning (ML) to the study of wireless propagation channels is investigated in two parts: first, an artificial neural network model is used to improve path loss prediction, and then, a pattern recognition model using multilayer perceptron (MLP) networks is used to identify and remove impulsive noise in power delay profiles (PDP). These studies were conducted based on field measurements in the 2400 MHz band in a public square with vegetation. The results are analyzed and compared with ordinary least squares (OLS) nonlinear regression results and results from similar studies. The Root Mean Square Error (RMSE) values between the experimental results of mean path loss and those provided by each propagation model are presented. The adjustment performed by OLS nonlinear regression and ANN significantly reduced the RMSE. The best results are those presented by artificial neural networks, with RMSE of 0.39 when using four neurons in the hidden layer of the ANN. The ANN used to identify and remove impulsive noise in power delay profiles (PDP) through pattern recognition proved to be more efficient than the CFAR technique. ANN technique found a larger number of valid multipaths compared to the CFAR technique. paper ML (ML parts first prediction then MLP (MLP PDP. PDP . 240 vegetation (OLS (RMSE 039 0 39 0.3 (PDP 24 03 3 0. 2

ABSTRACT The concept of a swarm of drones assumes the presence of a wireless ad hoc network, in which drones are network nodes and exchanging information with each other. This article is devoted to studying the behavior of an ad hoc network in a transient mode and assessing the characteristics of updating local adjacency matrices (LAM), which allow network nodes to autonomously form packet transmission routes. Using a simulation model, a comparison was made of two multiple access methods to a common data transmission channel in the process of updating matrices: cyclic and random (slotted ALOHA). The simulation results made it possible to determine areas of their effective application: slotted ALOHA is advisable to use with relatively high probabilities of packet distortion (of the order of 0.1 and higher), a numerous nodes (more than 40), and low network connectivity, and cyclic access (CA) is effective at a low level of distortion. It is shown that the completion of the process of updating adjacency matrices (AM) can be judged by such indicators of the exchange of routing information as the achievement of a certain threshold of the number of transmissions and a decrease in the level of network traffic. other LAM, LAM , (LAM) routes model ALOHA. . ALOHA) application 01 0 1 0. higher, higher higher) more 40, 40 40) connectivity CA (CA AM (AM traffic (LAM 4

Abstract Intrusion detection in Fog-Assisted Wireless Sensor Networks (Fog-WSNs) is a critical security measure designed to protect the functionality and integrity of these networks. Fog computing extends the abilities of traditional WSNs by introducing edge devices or fog nodes that can process data and provide computational resources. Intrusion detection in Fog-WSNs is vital to maintain the privacy and security of data generated and transmitted by sensors and processed at the fog node. Machine learning (ML) algorithms are widely employed to detect intrusion. These models can be trained on historical data to detect known attack patterns and can adapt to emerging threats. By implementing effective intrusion detection mechanisms, these networks can alleviate risks and ensure the reliable operation of critical applications in different fields namely IoT, smart cities, and industrial automation. This study designs an Intrusion Detection using Binary Arithmetic Optimization with Sparse Auto encoder (BAOA-SAE) technique for Fog Assisted WSN. The major aim of BAOA-SAE method is to recognize and classify the presence of the intrusions in the network. Primarily, the BAOA-SAE method focuses on the election of prominent features in the network data. Next, the SAE model is implemented to categorize the presence of intrusions. To improve the intrusion rate, the BAOA-SAE technique employs bacterial foraging optimization algorithm (BFOA). A broad range of simulated outcomes were performed on benchmark IDS dataset. The extensive outcomes highlighted the high efficiency of the BAOA-SAE method over other existing techniques. FogAssisted FogWSNs (Fog-WSNs resources node ML (ML threats mechanisms IoT cities automation BAOASAE BAOA (BAOA-SAE WSN Primarily Next rate BFOA. BFOA . (BFOA) dataset techniques (BFOA

Abstract Objective To describe the process of developing and evaluating a mobile application prototype to enable people with complex communication needs to call pre-hospital emergency services. Methods This methodological study was conducted in three stages: determining the target population’s functional requirements; developing and making available a prototype application for touchscreen mobile phones to request pre-hospital services; experts assessed the usability heuristics using a checklist, while the target population (people with complex communication needs) used the System Usability Scale. Descriptive statistics were performed, and the scores assigned to the application were analyzed. Results The application obtained high usability scores (mean=58.75) and 21 individuals from the target population reported an excellent user satisfaction index (mean=89.5), which allowed registering and applying for the prototype’s patent. Conclusion The prototype showed the ability to enable individuals with complex communication needs to access and request pre-hospital emergency services. prehospital pre hospital services stages populations s requirements checklist Scale performed analyzed mean=58.75 mean5875 mean 58 75 (mean=58.75 2 mean=89.5, mean895 mean=89.5 , 89 5 (mean=89.5) prototypes patent mean=58.7 mean587 7 (mean=58.7 mean89 mean=89. 8 (mean=89.5 mean=58. mean58 (mean=58. mean8 mean=89 (mean=89. mean=58 mean5 (mean=58 mean=8 (mean=89 mean=5 (mean=5 mean= (mean=8 (mean= (mean

Resumen Objetivo Describir el proceso de elaboración y evaluación de un modelo de aplicación de telefonía móvil que promueva la accesibilidad en llamadas de asistencia prehospitalaria para personas con necesidades comunicativas especiales. Métodos Estudio metodológico realizado en tres etapas: definir los requisitos funcionales del público destinatario; elaborar y poner a disposición el modelo de la aplicación para celulares touchscreen para la solicitación de asistencia prehospitalaria, y evaluar las heurísticas de usabilidad por peritos, mediante checklist, y por el público destinatario, personas con necesidades comunicativas especiales, utilizando la System Usability Scale. Se realizó el análisis estadístico descriptivo y se calcularon los puntajes de evaluación de la aplicación. Resultados La aplicación presentó una alta usabilidad (promedio de 58,75 puntos) y 21 personas del público destinatario indicaron un excelente índice de satisfacción del usuario (promedio de 89,5 puntos), lo que permite el registro y patente del modelo. Conclusión El modelo elaborado demostró tener capacidad para promover la accesibilidad comunicativa de pedido de asistencia prehospitalaria para personas con necesidades comunicativas especiales. especiales etapas peritos checklist Scale promedio 5875 58 75 58,7 puntos 2 895 89 5 89, puntos, , 587 7 58, 8

Resumo Objetivo Descrever o processo de construção e avaliação de um protótipo de aplicativo de telefonia móvel que promova acessibilidade em chamada de socorro pré-hospitalar por pessoas com necessidades comunicativas especiais. Métodos Estudo metodológico, realizado em três etapas: definição de requisitos funcionais da população alvo; construção e disponibilização do protótipo de aplicativo para celulares touchscreen para solicitação de atendimento pré-hospitalar; avaliação das heurísticas de usabilidade por peritos, por meio de checklist, e pela população-alvo, pessoas com necessidades comunicativas especiais, utilizando a System Usability Scale. Foi realizada análise estatística descritiva e calculadas as pontuações e escores de avaliação do aplicativo. Resultados O aplicativo apresentou alta usabilidade (média de 58,75 pontos) e 21 sujeitos da população-alvo indicaram um excelente índice de satisfação do usuário (média de 89,5 pontos), oportunizando o registro e patente do protótipo. Conclusão O protótipo construído, demonstrou capacidade para promover acessibilidade comunicativa de convocação de socorro pré-hospitalar para pessoas com necessidades comunicativas especiais. préhospitalar pré hospitalar especiais metodológico etapas alvo peritos checklist populaçãoalvo, populaçãoalvo alvo, Scale média 5875 58 75 58,7 pontos 2 895 89 5 89, pontos, , construído 587 7 58, 8