Motion Sensors for Knee Angle Recognition in Muscle Rehabilitation Solutions.

The progressive loss of functional capacity due to aging is a serious problem that can compromise human locomotion capacity, requiring the help of an assistant and reducing independence. The NanoStim project aims to develop a system capable of performing treatment with electrostimulation at the patient's home, reducing the number of consultations. The knee angle is one of the essential attributes in this context, helping understand the patient's movement during the treatment session. This article presents a wearable system that recognizes the knee angle through IMU sensors. The hardware chosen for the wearables are low cost, including an ESP32 microcontroller and an MPU-6050 sensor. However, this hardware impairs signal accuracy in the multitasking environment expected in rehabilitation treatment. Three optimization filters with algorithmic complexity O(1) were tested to improve the signal's noise. The complementary filter obtained the best result, presenting an average error of 0.6 degrees and an improvement of 77% in MSE. Furthermore, an interface in the mobile app was developed to respond immediately to the recognized movement. The systems were tested with volunteers in a real environment and could successfully measure the movement performed. In the future, it is planned to use the recognized angle with the electromyography sensor.

Virtual Reality Rehabilitation's Impact on Negative Symptoms and Psychosocial Rehabilitation in Schizophrenia Spectrum Disorder: A Systematic Review.

BACKGROUND: Schizophrenia is a chronic psychiatric disorder with symptoms that can severely affect patients' quality of life. While drug administration inhibits most of the positive symptoms, it fails to effectively treat the negative symptoms and in turn relies on rehabilitation therapies. With technological progress, virtual reality (VR) has been the target of recent studies in terms of mental health rehabilitation and has been shown to be a tool with ecological validity in order to introduce the individual to situations similar to their daily life. METHODS: From July to August 2021, we conducted a systematic review with the purpose of understanding the impact of virtual reality rehabilitation on negative symptoms and psychosocial rehabilitation in the schizophrenia spectrum. The searches were performed in the databases Web of Science, Scopus, and PubMed. RESULTS: In our search, we identified 201 results, where 108 duplicates were excluded, resulting in a final balance of 93. After reading and assessing the titles and abstracts, 66 studies were excluded. Of the remaining 27 reports, 23 were excluded for not meeting the previously defined eligibility criteria, resulting in the inclusion of four studies in this systematic review. CONCLUSIONS: The available data on the specific topic was limited and could have been more complete. However, in our review, we were able to identify statistically relevant results demonstrating the effectiveness of intervention. We could find medium to large effects, allowing VR to be an ally for rehabilitation of symptoms related to schizophrenia.

ARENA-Augmented Reality to Enhanced Experimentation in Smart Warehouses.

The current industrial scenario demands advances that depend on expensive and sophisticated solutions. Augmented Reality (AR) can complement, with virtual elements, the real world. Faced with this features, an AR experience can meet the demand for prototype testing and new solutions, predicting problems and failures that may only exist in real situations. This work presents an environment for experimentation of advanced behaviors in smart factories, allowing experimentation with multi-robot systems (MRS), interconnected, cooperative, and interacting with virtual elements. The concept of ARENA introduces a novel approach to realistic and immersive experimentation in industrial environments, aiming to evaluate new technologies aligned with the Industry 4.0. The proposed method consists of a small-scale warehouse, inspired in a real scenario characterized in this paper, managing by a group of autonomous forklifts, fully interconnected, which are embodied by a swarm of tiny robots developed and prepared to operate in the small scale scenario. The AR is employed to enhance the capabilities of swarm robots, allowing box handling and virtual forklifts. Virtual laser range finders (LRF) are specially designed as segmentation of a global RGB-D camera, to improve robot perception, allowing obstacle avoidance and environment mapping. This infrastructure enables the evaluation of new strategies to improve manufacturing productivity, without compromising the production by automation faults.

How complexity leadership and cohesion influence team effectiveness / Como a liderança de complexidade e a coesão influenciam a eficácia das equipes / Como el liderazgo de complexidad y la cohesión influyen en la eficacia de los equipos

This research tested the hypothesis that enabling leadership behaviors are positively related to the objective and subjective dimensions of teamwork effectiveness. Hypotheses testing was done during a laboratory task in which 40 teams of 5 people each (N = 200) engaged in a simulation task using the pc game SimCity4. The results suggest that enabling leadership and task cohesion are not related to team performance, R2 = .08, MSE = 1.02, F(4, 35) = .79, p = .54; and that enabling leadership is positively related to team viability, mediated by task cohesion, R2 = .71, MSE = 0.31, F(4, 35) = 21.87, p < .001. These findings also suggest that engaging in enabling leadership behaviors promotes team member commitment to a shared goal, which in turn enhances the shared perception that the team has the necessary conditions to keep working together on future assignments.

Esta investigação testou a hipótese de que os comportamentos de facilitação estão positivamente relacionados com as dimensões objetiva e subjetiva da eficácia das equipas de trabalho. Participaram neste estudo 40 equipas de 5 elementos (N = 200), onde se utilizou o jogo de computador SimCity4. A análise dos efeitos diretos e indiretos sugere que os comportamentos de facilitação e a coesão de tarefa não se relacionam com o desempenho, R2 = .08, M.S.E = 1.02, F(4, 35) = .79, p = .54; e que a coesão de tarefa medeia a relação entre comportamentos de facilitação e a viabilidade, R2 = .71, MSE = 0.31, F(4, 35) = 21.87, p < .001. Estes resultados sugerem que a prática de comportamentos de facilitação promove a união dos membros da equipa, o que por sua vez é importante para a crença partilhada de que a equipa tem condições para continuar unida no futuro.

La presente investigación probó la hipótesis de que los comportamientos de facilitación están positivamente relacionados con las dimensiones objetiva y subjetiva de la eficacia de los equipos de trabajo. En este estudio participaron 40 equipos de 5 elementos (N = 200), donde se utilizó el juego de ordenador SimCity4. El análisis de los efectos directos e indirectos sugiere que el comportamiento de facilitación y la cohesión de tareas no están relacionados con el rendimiento, R2 = .08, MSE = 1.02, F(4, 35) = .79, p = .54; y que la cohesión de tarea media la relación entre comportamientos de facilitación y la viabilidad, R2 = .71, MSE = 0.31, F(4, 35) = 21.87, p < .001. Estos resultados sugieren que la práctica de comportamiento de facilitación promueve la unión de los miembros del equipo, así como la creencia compartida de que el equipo tiene condiciones para continuar unido en el futuro.

Leptospirose em doentes com anticorpos anti-HIV: relato de dois casos / Leptospirosis in patients with anti-HIV antibodies: report of 2 cases

Relata-se a concomitância de leptospirose e síndrome da imunodeficiência adquirida (SIDA) em humanos. Nestes casos näo foram observados aspectos clínicos diferentes que possam ser atribuidos à simultaneidade dessas patologias

Emprego da exsangüineotransfusäo em acidente loxoscélico humano, grave / Utilization of exchange transfusion procedure in severe human loxoscelism

Foi utilizada a exsangüineotransfusäo, associada à soroterapia heteróloga específica e alcalinizaçäo urinária, em um caso de acidente loxoscélico humano na cidade de Säo Paulo. A indicaçäo da exsangüíneotransfusäo foi a intensa hemólise associada à gravidade e o iminente risco de morte

Desaparecimento radiológico de metástases pulmonares num paciente com carcinoma da próstata depois do tratamento com um LH-RH agonista / Radiological regression of lung metastasis in patient with carcinoma of the prostate after the treatment with LH-RH antaganist

Paciente com carcinoma de próstata, retençäo urinária, metástase pulmonar e metástase ósseas foi tratado com D-Trp-6-LH-RH (decapeptyl) por 11 meses. Após 4 meses, houve regressäo das metástases ósseas e pulmonares e alívio da obstruçäo urinária. Apesar desse tratamento ter sido interrompido há mais de 18 meses, o paciente continua assintomático e sem recorrência das metástases ósseas e pulmonares