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75,611 results on '"Torres A"'

19. Real-Time Emergency Vehicle Detection using Mel Spectrograms and Regular Expressions

Author

Pacheco-Gonzalez, Alberto, Torres, Raymundo, Chacon, Raul, and Robledo, Isidro

Subjects
Computer Science - Sound, Computer Science - Formal Languages and Automata Theory, Computer Science - Symbolic Computation, Electrical Engineering and Systems Science - Audio and Speech Processing, I.5.5
Abstract

In emergency situations, the high-speed movement of an ambulance through the city streets can be hindered by vehicular traffic. This work presents a method for detecting emergency vehicle sirens in real time. To obtain the audio fingerprint of a Hi-Lo siren, DSP and signal symbolization techniques were applied, which were contrasted against an audio classifier based on a deep neural network, using the same 280 audios of ambient sounds and 52 Hi-Lo siren audios dataset. In both methods, some classification accuracy metrics were evaluated based on its confusion matrix, resulting in the DSP algorithm having a slightly lower accuracy than the DNN model, however, it offers a self-explanatory, adjustable, portable, high performance and lower energy and consumption that makes it a more viable lower cost ADAS implementation to identify Hi-Lo sirens in real time., Comment: in Spanish language

Published
2023

26. Volcanic ash delimitation using Artificial Intelligence based on Pix2Pix

Author

Carrillo, Christian, Torres, Gissela, and Mejia-Escobar, Christian

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

Volcanic eruptions emit ash that can be harmful to human health and cause damage to infrastructure, economic activities and the environment. The delimitation of ash clouds allows to know their behavior and dispersion, which helps in the prevention and mitigation of this phenomenon. Traditional methods take advantage of specialized software programs to process the bands or channels that compose the satellite images. However, their use is limited to experts and demands a lot of time and significant computational resources. In recent years, Artificial Intelligence has been a milestone in the computational treatment of complex problems in different areas. In particular, Deep Learning techniques allow automatic, fast and accurate processing of digital images. The present work proposes the use of the Pix2Pix model, a type of generative adversarial network that, once trained, learns the mapping of input images to output images. The architecture of such a network consisting of a generator and a discriminator provides the versatility needed to produce black and white ash cloud images from multispectral satellite images. The evaluation of the model, based on loss and accuracy plots, a confusion matrix, and visual inspection, indicates a satisfactory solution for accurate ash cloud delineation, applicable in any area of the world and becomes a useful tool in risk management., Comment: 18 pages, in Spanish language, 15 figures

Published
2023

41. Velocidad de procesamiento, memoria de trabajo, morfología y sintaxis del lenguaje oral en estudiantes de cinco y seis años de educación inicial de Lima

Author

Dioses Chocano, Alejandro Segundo, Chávez Zamora, José Moisés, Velásquez Centeno, Carlos Moisés, Aliaga Guanilo, Connie Daniela, Brito Torres, Claudia Jimena, Vasquez Florentino, Betsabe Sarai, Espinoza, Liliana Arana, Morales Caceda, Johanna, Torres Chamorro, Astry Sharon, and Millones Choquicondo, Caroline Gianella

Published
2024
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44. Un sistema automatizado para el adiestramiento y evaluacion de estudiantes de fisica ante examenes cerrados

Author

Jimenez-Torres, Juan Jose.

Subjects
Physics - Physics Education
Abstract

In this work, I present an automatic system for the evaluation of closed-type exercises in physics at the high school level or in the first year of a degree where physics is a mandatory course. It is expected that this will allow students or teachers with access to a computer or mobile device to get into a repository of exercises for different areas of physics and practice them using true or false or multiple choice options. This system is expected to solve the problem that many students do not have enough skills to face this type of evaluation, since they have not had the opportunity to work with closed-type exams that are graded by computers and are used by educational institutions such as evaluation tools. This material can also benefit teachers by providing them with an alternative form of evaluation to the traditional form. To use this system, computer programming skills are not required, since it consists of a program where the answers are selected and the program provides a numerical score, a brief interpretation, and the solutions to every exercise, which will allow students to compare their answers with the solutions., Comment: in Spanish language

Published
2023

45. Resumen ejecutivo del documento de consenso sobre la realización de la ecografía clínica: recomendaciones desde los Grupos de Trabajo de Ecografía Clínica de la SEMI, SEDAR, SEGG, SEMERGEN, SEMES, SEMFYC y SEMG

Author

Tung-Chen, Yale, Beltrán Romero, Luis, Torres Macho, Juan, de Casasola Sánchez, Gonzalo García, Manuel, Ignacio, Short Apellaniz, Jorge, Alonso Roca, Rafael, Calvo Cebrián, Antonio, Villén Villegas, Tomás, Ramón Alonso Viladot, José, Campo Linares, Ricardo, García Suárez, Iván, Marchese Ratti, Martin F., Sánchez Sánchez, José Carlos, Arnanz González, Irene, Albert Foo Gil, Keith, Romero Galán, Alberto, Vives, Marc, González Delgado, Ariel Duilio, Hernández Martínez, Alberto, Mercadal Mercadal, Jordi, Montes Belloso, María Esther, Martínez Villén, Olga, Minguela Puras, Esther, Rodríguez Urteaga, Ecatherine, Segura Grau, Ana, Sánchez Rodríguez, José Luis, Reinoso Párraga, Paola Pastora, Tung-Chen, Y., Short Apellaniz, J., Alonso Roca, R., Alonso Viladot, J.R., Arnanz González, I., Beltrán Romero, L., Calvo Cebrián, A., Campo Linares, R., Foo Gil, K.A., García Suárez, I., González Delgado, A.D., Hernández Martínez, A., Marchese Ratti, M.F., Martínez Villén, O., Mercadal Mercadal, J., Minguela Puras, E., Montes Belloso, Maria Ester, Reinoso Párraga, P.P., Rodríguez Urteaga, E., Romero Galán, A., Sánchez Barrancos, I.M., Sánchez Rodríguez, J.L., Sánchez Sánchez, J.C., Segura Grau, A., Torres Macho, J., Villén Villegas, T., Vives, M., and de Casasola Sánchez, G.G.

Published
2024
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46. Impacto clínico del tratamiento a distancia de la insuficiencia cardiaca con la alerta multiparamétrica del DAI HeartLogic

Author

de Juan Bagudá, Javier, Cózar León, Rocío, Gavira Gómez, Juan J., Pachón, Marta, Goirigolzarri Artaza, Josebe, Martínez Mateo, Virgilio, Escolar Pérez, Vanessa, Iniesta Manjavacas, Ángel Manuel, Rivas Gándara, Nuria, Álvarez-García, Jesús, Sánchez Ramos, Jesús Gabriel, Aguilera Agudo, Cristina, Rubín López, José Manuel, Macías Gallego, Alfonso, López Fernández, Silvia, González Torres, Luis, Martínez, Juan Gabriel, Marrero Negrín, Natalia, Ramos Maqueda, Javier, Cabrera Ramos, Mercedes, Medina Gil, José María, De Diego Rus, Carlos, Bermúdez Jiménez, Francisco José, Madrazo, Inés, Díaz Molina, Beatriz, Cobo Marcos, Marta, Ruiz Duthil, Ana Delia, Cordero, David, Méndez Fernández, Ana Belén, Peña Conde, Laura, Arcocha Torres, María F., Pérez Castellano, Nicasio, Arias, Miguel Á., García Bolao, Ignacio, Díaz Infante, Ernesto, Campari, Monica, Arribas Ynsaurriaga, Fernando, Delgado Jiménez, Juan F., Valsecchi, Sergio, and Salguero Bodes, Rafael

Published
2024
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50. Búsqueda y evaluación de objetos de aprendizaje para la enseñanza del modelado de bases de datos

Author

Torres Auad, Lía Fabiana and Willging, Pedro

Subjects
Ciencias Informáticas, Educación, Education, Special aspects of education, LC8-6691
Abstract

La expansión de propuestas educativas mediadas por tecnologías ha dado origen a estrategias y recursos innovadores como es el caso de los objetos de aprendizaje (OA) y la posterior diseminación mundial de repositorios de OAs. Este trabajo fue motivado por la necesidad de localizar OAs que permitan complementar la enseñanza presencial de las metodologías de diseño de bases de datos, contenidos clásicos de toda carrera de informática y/o computación. EL trabajo parte de la búsqueda en los Repositorios de Objetos de Aprendizaje (ROAs) examinados. Una vez localizados los OAs comenzó la etapa de evaluación de los mismos, previo estudio de las propuestas de medición de calidad de objetos de aprendizaje, de modo de obtener información que constituya una referencia a los posibles reutilizadores. Para la selección de los instrumentos de evaluación a ser utilizados, se tuvo en cuenta aquellos que brindan la posibilidad de un resultado cuantificable, donde las dimensiones observables se encuentran claramente definidas.

Published
2015

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