Browsing by Author "Nuñez, Felipe"

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    An Industrial Internet Application for Real-Time Fault Diagnosis in Industrial Motors
    (IEEE, 2020) Langarica Chavira, Saúl Alberto; Ruffelmacher, Christian; Nuñez, Felipe
    Being able to detect, identify, and diagnose a fault is a key feature of industrial supervision systems, which enables advance asset management, in particular, predictive maintenance, which greatly increases efficiency and productivity. In this paper, an Industrial Internet app for real-time fault detection and diagnosis is implemented and tested in a pilot scale industrial motor. Real-time fault detection and identification is based on dynamic incremental principal component analysis (DIPCA) and reconstruction-based contribution (RBC). When the analysis indicates that one of the vibration measurements is responsible for the fault, a convolutional neural network (CNN) is used to identify the unbalance or bearing fault type. The application was evaluated in its three functionalities: fault detection, fault identification, and fault identification of vibration-related faults, yielding a fault detection rate over 99%, a false alarm rate below 5%, and an identification accuracy over 90%.
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    Expectativas de estudiantes de medicina de pregrado en relación al perfil de médico esperado
    (2006) García-Huidobro Munita, Diego Nicolás; Nuñez, Felipe; Vargas Innocenti, Paula Andrea; Astudillo Mihovilovic, Smiljan Osvaldo; Hitschfeld Arriagada, Mario Javier; Gennero Riganti, Rubén Carlo; Salvatierra López, Loreto Olivia; Benavente Carrasco, Angela María
    Background: During the last few years, multiple new medical schools have emerged in Chile, associated to the constant preoccupation to provide a good quality medical care. This created the need to evaluate medical training programs and to open a discussion about the attributes that a good physician should have. Aim: To evaluate the medical student's perception of the ideal medical doctor profile. Material and methods: An analytical, descriptive and cross sectional study was designed. Eleven second year, 11 third year, nine fourth year, 13 fifth year, 6 sixth year and 8 seventh year students were studied. Data collection was gathered by focus groups. Codes and triangulation were used for data analysis. Results: As attitudes and moral-ethical values, students valued the absence of discrimination a listening attitude and empathy. Among job related issues, they valued responsibility and punctuality. Emotional and legal self-care were valued as self related attitudes. Among skills, competences and capacities, a value was given to communicational skills, team work and professional easiness. Knowledge about medical and non medical topics was appraised. The valued attributes among duties and activities were patient diagnosis, treatment and education, team leadership and continuous medical training. Conclusions: These findings should help to design new curricula for medical schools.