Examinando por Autor "Márquez Camarena, Javier Francisco"
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- ÍtemCharacterization of Metallic Gold Nanoparticles in a Colloidal State by Artificial Vision(Polskie Towarzystwo Inżynierii Ekologicznej, 2024-01-26) Márquez Camarena, Javier Francisco; Carbajal Morán, Hipólito; Galván Maldonado, Carlos AbelGold nanoparticles in their colloidal state have different colors, and the equipment for their characterization, such as UV-Vis spectrophotometers, scanning electron microscopy (SEM), and transmission electron microscopy (TEM), has high costs. The research aimed to characterize metallic gold nanoparticles by artificial vision based on the color of the samples in the colloidal state. The sensor used for the sampling was a 50 MP triple-lens camera with the optical image stabilization (OIS) of a smartphone. The Vision Acquisition and Vision Assistant blocks in the NI LabVIEW platform were used to implement an artificial vision device. The camera interface was used to identify the color of each of the 10 samples of colloidal gold nanoparticles produced by the YAG laser and chemical reduction in 15 ml of deionized water. The characterization consisted of the determination of the size and concentration of the gold nanoparticles based on their color, which ranged from pink to red wine. As a result, the artificial vision device adequately identified the color of the metallic gold nanoparticles in a colloidal state with a certainty of more than 95%, allowing the nanoparticles to be adequately characterized. Therefore, it is concluded that artificial vision adequately characterized gold nanoparticles' wavelength, absorbance, diameter, and concentration.
- ÍtemEvaluation of Normalized Difference Vegetation Index by Remote Sensing with Landsat Satelites in the Tayacaja Valley in the Central Andes of Peru(Polskie Towarzystwo Inżynierii Ekologicznej, 2023-08-15) Carbajal Morán, Hipólito; Márquez Camarena, Javier Francisco; Galván-Maldonado, Carlos Abel; Zárate Quiñones, Rosa H.; Galván Maldonado, Alberto C.; Muñoz de la Torre, Rossibel JuanaThe research sought to evaluate the normalized difference vegetation index (NDVI) of the study area located in the province of Tayacaja, which includes the districts of Acraquia, Ahuaycha, Pampas and Daniel Hernández, which is part of the central Andes of Peru. The data were collected in low water seasons with a longitudinal cut of 30 years with one sample per year, starting in 1993 until 2022; these samples corresponded to the month of August of each year. The images were extracted from maps from Landsat satellite databases, which were filtered for low cloud cover to avoid interference with the images. Maps from 1993 to 2012 were obtained from Landsat 5 satellite, while from 2013 to 2022 data were obtained from Landsat 8 satellite. The normalized difference vegetation index was determined using Quantum GIS based on the red and near infrared maps; being the minimum NDVI value obtained -0.18, which corresponds to the aquatic body of the Upamayu River that crosses from west to east the study area; while the highest NDVI obtained was 0.79 indicating a greater vegetation cover constituted by mainly eucalyptus plants. The mean NDVI of the 30 years is close to 0.21; this is an indicator that the vegetation is scarce and that it is decreasing mainly due to population growth.
- ÍtemIncidencia de gestión de las TICS en aprendizaje significativo en Instituto de Educación Superior Tecnológico Público Manuel Scorza Torre - Acobamba, 2022(Universidad Nacional de Huancavelica, 2023-08-23) Llacuachaqui Socualaya, José Miguel; Márquez Camarena, Javier FranciscoLa gestión de las TICs en el aprendizaje significativo es de suma importancia, ya que con su aplicación se maximiza la parte académica y la fácil comprensión por los estudiantes. En el presente trabajo se formula el problema ¿Cómo incide la gestión de las TICs en el aprendizaje significativo en el Instituto de Educación Superior Tecnológico Público Manuel Scorza Torre – Acobamba, 2022? Donde se considera como objetivo general; determinar la incidencia de la gestión de las TICs en el aprendizaje significativo. En el desarrollo del trabajo de investigación se consideró las dimensiones que determinan el aprendizaje como son; la información en entornos digitales, la comunicación y colaboración, la vivencia digital y la tecnología, todo ello se concatena en las TICs. Como resultado tenemos que la gestión de las TICs incide de forma positiva en el aprendizaje significativo, así también la comunicación y colaboración, donde es de suma importancia saber comunicarse y para ello se cuenta con las herramientas de la tecnología, desde luego la vivencia digital obliga al usuario estar actualizado con los últimos avances de la ciencia y por último la misma tecnología que obliga a tener presente los últimos alcances de la ciencia, se afirma debido a que cuando se realizó la prueba de hipótesis, el valor crítico hallado para las dimensiones y la hipótesis general fue menor a 0,05 donde de acuerdo al principio estadístico se menciona lo afirmado
- ÍtemTunable PID Controller from the WinCC Unified Interface via OPC UA(Engineering and Technology Publishing, 2024-09-01) Carbajal Morán, Hipólito; Galván Maldonado, Carlos Abel; Ramos Lapa, Everth Manuel; Márquez Camarena, Javier FranciscoAbstract—In this study, it was sought to implement a Proportional-Integral-Derivative (PID) controller in SIMATIC S7-1500 Programmer Logic Controller (PLC) with Open Platform Communications United Architecture (OPC UA) communication and tunable control from WinCC unified, in order to reduce the settling time of the temperature variable in the plant SO 3536-8T. Using the Ziegler-Nichols PID rule, adjustments were made to the Kp,Ti and Td coefficients of the PID controller. Initially set with values of Kp = 1.0, Ti = 20.00 s, Td = 0.1 s, and ess ≤ 2%. Without tuning, a maximum settling time of 193 s was achieved for a setpoint of 50 °C. After tuning from the WinCC unified interface, improved parameters (Kp = 6.05, Ti= 0.75 s, Td = 0.15 s) were obtained for ess ≤ 2%, presenting an underdamped response and a maximum settling time of 54 s. The tests present a reduction of the settling time of the variable higher than 60.25%, evidencing the effectiveness of the tunable PID controller in improving the system performance. Overall, the successful implementation of this tunable PID controller not only optimized the efficiency of the control system, but also provided a considerable reduction in the settling time of the temperature variable in the plant, representing a significant advance for the operation and overall efficiency of the process.