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Browsing by Author "Castro Palacio, Juan Carlos"

Now showing items 1-20 of 24

A Probabilistic Classification Procedure Based on Response Time Analysis Towards a Quick Pre-Diagnosis of Student's Attention Deficit

Hernaiz-Guijarro, M.; Castro-Palacio, J. C.; Navarro Pardo, E.; Isidro, J.M.; Fernández de Córdoba, Pedro (MDPI AG, 2019-05)

[EN] A classification methodology based on an experimental study is proposed towards a fast pre-diagnosis of attention deficit. Our sample consisted of school-aged children between 8 and 12 years from Valencia, Spain. The ...
A quantitative analysis of coupled oscillations using mobile accelerometer sensors

Castro Palacio, Juan Carlos; Velazquez Abad, Luisberis; Gimenez Palomares, Fernando; Monsoriu Serra, Juan Antonio (European Physical Society, 2013-05)

In this paper, smartphone acceleration sensors were used to perform a quantitative analysis of mechanical coupled oscillations. Symmetric and asymmetric normal modes were studied separately in the first two experiments. ...
Aplicaciones de los sensores de los smartphones a la didáctica de la física experimental

Giménez Valentín, Marcos Herminio (Universitat Politècnica de València, 2017-06-19)

Traditionally, Physics laboratory practices have two objectives. On the one hand, students reinforce the concepts that they have acquired in theory lessons. On the other hand, they get used to the experimental techniques. ...
Aprendizaje basado en proyectos en asignaturas de física: aplicación en el Grado en Ingeniería Eléctrica de la UPV

Salinas Marín, Isabel; Gimenez Valentin, Marcos Herminio; Cuenca-Gotor, Vanesa Paula; Sans-Tresserras, Juan Ángel; Ferrando, Vicente; Moll López, Santiago Emmanuel; Moraño Fernández, José Antonio; Castro-Palacio, Juan Carlos; Monsoriu Serra, Juan Antonio (EscuelaTécnica Superior de Ingeniería del Diseño. Universitat Politècnica de València, 2022-07-22)

[ES] En este trabajo se muestra la aplicación de la metodología de Aprendizaje Basado en Proyectos en la asignatura de Física del Grado en Ingeniería Eléctrica, mediante el estudio de la geometría de masas de elementos ...
Caracterización acústica del frenado magnético con un smartphone

Marín-Sepúlveda, Camila F.; Torriente-García, Ives; Castro-Palacio, Juan Carlos; Salinas Marín, Isabel; Monsoriu Serra, Juan Antonio (EscuelaTécnica Superior de Ingeniería del Diseño. Universitat Politècnica de València, 2022-07-22)

[ES] Utilizaremos la resonancia de las ondas sonoras en una columna de aire para estudiar la velocidad terminal de un imán que cae en el interior de un tubo de aluminio (no ferromagnético). Se utiliza un smartphone para ...
Correlations between Background Radiation Inside a Multilayer Interleaving Structure, Geomagnetic Activity, and Cosmic Radiation: A Fourth-Order Cumulant-Based Correlation Analysis

Iglesias-Martínez, Miguel E.; Castro-Palacio, Juan Carlos; Scholkmann, Felix; Milián-Sánchez, Victor; Fernández de Córdoba, Pedro; Mocholí Salcedo, Antonio; Mocholí-Belenguer, Ferran; Kolombet, Valeriy A.; Panchelyuga, Victor A.; Verdú Martín, Gumersindo Jesús (MDPI AG, 2020-03)

[EN] Time-series of background radiation (measured inside a multilayer structure), geomagnetic activity, and cosmic-ray activity has been analyzed using linear correlation analysis and a new correlation measure based on ...
Direct measurement of the speed of sound using a microphone and a speaker

Gómez-Tejedor, José Antonio; Castro Palacio, Juan Carlos; Monsoriu Serra, Juan Antonio (IOP Publishing: Hybrid Open Access, 2014-05)

[EN] We present a simple and accurate experiment to obtain the speed of sound in air using a conventional speaker and a microphone connected to a computer. A free open source digital audio editor and recording computer ...
El smartphone como barómetro en experimentos de Física

Salinas, Isabel; Giménez, Marcos H.; Monsoriu Serra, Juan Antonio; Castro Palacio, Juan Carlos (Universitat Politècnica de València, 2018-02-05)

[EN] This paper presents two experiments that take advantage of smartphones pressure sensor, using it to determine the value of the pressure within in equilibrium water in a test tube. In a first experiment, aimed at ...
Fluctuations in measured radioactive decay rates inside a modified Faraday cage: Correlations with space weather

Milián-Sánchez, V.; Scholkmann, F.; Fernández de Córdoba, Pedro; Mocholí Salcedo, Antonio; Mocholí-Belenguer, Ferran; Iglesias-Martínez, M. E.; Castro-Palacio, Juan Carlos; Kolombet, V. A.; Panchelyuga, V. A.; Verdú Martín, Gumersindo Jesús (Nature Publishing Group, 2020-05-22)

[EN] For several years, reports have been published about fluctuations in measured radioactive decay time-series and in some instances linked to astrophysical as well as classical environmental influences. Anomalous behaviors ...
Hollow Gold Nanoparticles Produced by Femtosecond Laser Irradiation

Castro-Palacio, Juan Carlos; Ladutenko, Konstantin; Prada, Alejandro; Gonzalez-Rubio, Guillermo; Diaz-Nunez, Pablo; Guerrero-Martinez, Andres; Fernández de Córdoba, Pedro; Kohanoff, Jorge; Perlado, José Manuel; Pena-Rodriguez, Ovidio; Rivera, Antonio (American Chemical Society, 2020-07-02)

[EN] Metallic hollow nanoparticles exhibit interesting optical properties that can be controlled by geometrical parameters. Irradiation with femtosecond laser pulses has emerged recently as a valuable tool for reshaping ...
Machinery Failure Approach and Spectral Analysis to Study the Reaction Time Dynamics over Consecutive Visual Stimuli: An Entropy-Based Model

Iglesias-Martinez, Miguel E.; Hernaiz-Guijarro, Moises; Castro-Palacio, Juan Carlos; Fernández de Córdoba, Pedro; Isidro, J.M.; Navarro-Pardo, Esperanza (MDPI AG, 2020-11)

[EN] The reaction times of individuals over consecutive visual stimuli have been studied using an entropy-based model and a failure machinery approach. The used tools include the fast Fourier transform and a spectral entropy ...
Modelación físico-matemática y simulaciones computacionales para guiar el diseño y fabricación de nanoestructuras plasmónicas optimizadas para aplicaciones energéticas

Castro Palacio, Juan Carlos (Universitat Politècnica de València, 2021-10-25)

[ES] La irradiación de nanopartículas de oro (AuNPs) esféricas en una suspensión coloidal con pulsos láser de nanosegundos puede inducir su metamorfosis, dando lugar a la aparición de esferas con cavidades internas. La ...
Monte Carlo Simulation of a Modified Chi Distribution Considering Asymmetry in the Generating Functions: Application to the Study of Health-Related Variables

Ortigosa, Nuria; Orellana-Panchame, Marcos; Castro-Palacio, Juan Carlos; Fernández de Córdoba, Pedro; Isidro, J.M. (MDPI AG, 2021-06)

[EN] Random variables in biology, social and health sciences commonly follow skewed distributions. Many of these variables can be represented by exGaussian functions; however, in practice, they are sometimes considered as ...
Passive Strategies to Improve the Comfort Conditions in a Geodesic Dome

Florez, Frank; Fernández de Córdoba, Pedro; Taborda, John; Castro-Palacio, Juan Carlos; Higón Calvet, José Luís; Pérez Quiles, María Jezabel (MDPI AG, 2021-03)

[EN] Non-conventional thermal zones are low-cost and ecology friendly alternatives to the housing needs of populations in various situations, such as surviving natural disasters or addressing homelessness. However, it is ...
Percentile Study of Chi Distribution. Application to Response Time Data

Castro-Palacio, Juan Carlos; Fernández de Córdoba, Pedro; Isidro, J.M.; Navarro-Pardo, Esperanza; Selvas Aguilar, Romeo (MDPI AG, 2020-04)

[EN] As a continuation of our previous work, where a Maxwell-Boltzmann distribution was found to model a collective's reaction times, in this work we will carry out a percentile study of the Chi distribution for some freedom ...
Propuesta de un índice para evaluar el desempeño físico basado en modelos termodinámicos

Puig Castro, Diego (Universitat Politècnica de València, 2021-10-21)

[ES] Desde el principio de los tiempos, el ser humano ha intentado clasificar a su población por su desempeño físico; es de aquí de donde surge la necesidad de realizar competiciones deportivas para saber quién es el ser ...
Sliding modes control for heat transfer in geodesic domes

Florez, Frank; Fernández de Córdoba, Pedro; Taborda, John; Polo, Miguel; Castro-Palacio, Juan Carlos; Pérez Quiles, María Jezabel (MDPI AG, 2020-06)

[EN] The analysis and modeling of unconventional thermal zones is a first step for the inclusion of low-cost spaces and for the assessment of the environmental impact among areas of human use in warm climates. In this ...
Study on band gap structure of Fibonacci quantum superlattices by using the transfer matrix method

Ferrando Martín, Vicente; Castro Palacio, Juan Carlos; Marí Soucase, Bernabé; Monsoriu Serra, Juan Antonio (World Scientific Publishing, 2014-03)

The scattering properties of particles in a one-dimensional Fibonacci sequence based potential have been analyzed by means of the Transfer Matrix Method. The electronic band gaps are examined comparatively with those ...
The acoustic Doppler effect applied to the study of linear motions

Gómez-Tejedor, José Antonio; Castro Palacio, Juan Carlos; Monsoriu Serra, Juan Antonio (European Physical Society, 2014-03)

In this work, the change of frequency of a sound wave due to the Doppler effect has been measured using a smartphone. For this purpose, a speaker at rest and a smartphone placed on a cart on an air track were used. The ...
The cosmological constant of emergent spacetime in the Newtonian approximation

Castro-Palacio, J. C.; Fernández de Córdoba, Pedro; Isidro, J.M. (World Scientific, 2020-10)

[EN] We present a simple quantum-mechanical estimate of the cosmological constant of a Newtonian Universe. We first mimic the dynamics of a Newtonian spacetime by means of a nonrelativistic quantum mechanics for the matter ...