This research proposes to evaluate the difference in essential mathematical competencies of middl... more This research proposes to evaluate the difference in essential mathematical competencies of middle school students transitioning to high school level under pandemic conditions (COVID-19) using the PreparaTec platform and Programme for International Student Assessment (PISA) released items as an evaluation instrument. The study was conducted with 84 students from first semester high school at Prepa Tec (Tecnologico de Monterrey, Campus Cuernavaca) aged 14 and 15. The students were divided into three experimental groups and a control group. Three levels of mathematical competencies: reproduction, definitions, and calculations (level 1), connections and integration to solve problems (level 2), and reflection (level 3) were evaluated. We applied a pre-test at the beginning of the semester and a post-test at the end after using the PreparaTec platform. Both tests were written and applied in a face-to-face format. The study presents the findings regarding the impact of using the PreparaTe...
2017 International Conference on Mechatronics, Electronics and Automotive Engineering (ICMEAE), 2017
Positioning mechanisms are required in order to improve antenna reception through a better orient... more Positioning mechanisms are required in order to improve antenna reception through a better orientation, reducing the physical interference produced by coupling of impedance, when orientation is made by hand. In this work, a positioning support for patch antennas was designed in order to know its effect over the patch antenna's performance. It is well-known that fabrication process of the antenna produces a shift in its frequency response, but there was not found information about the effect of the structural support. Simulations to known this effect were performed considering two types of material for the structural support. A patch antenna, designed for Wi-Fi (2.4 GHz), was used to analyze this effect.
This research proposes to evaluate the difference in essential mathematical competencies of middl... more This research proposes to evaluate the difference in essential mathematical competencies of middle school students transitioning to high school level under pandemic conditions (COVID-19) using the PreparaTec platform and Programme for International Student Assessment (PISA) released items as an evaluation instrument. The study was conducted with 84 students from first semester high school at Prepa Tec (Tecnologico de Monterrey, Campus Cuernavaca) aged 14 and 15. The students were divided into three experimental groups and a control group. Three levels of mathematical competencies: reproduction, definitions, and calculations (level 1), connections and integration to solve problems (level 2), and reflection (level 3) were evaluated. We applied a pre-test at the beginning of the semester and a post-test at the end after using the PreparaTec platform. Both tests were written and applied in a face-to-face format. The study presents the findings regarding the impact of using the PreparaTe...
2017 International Conference on Mechatronics, Electronics and Automotive Engineering (ICMEAE), 2017
Positioning mechanisms are required in order to improve antenna reception through a better orient... more Positioning mechanisms are required in order to improve antenna reception through a better orientation, reducing the physical interference produced by coupling of impedance, when orientation is made by hand. In this work, a positioning support for patch antennas was designed in order to know its effect over the patch antenna's performance. It is well-known that fabrication process of the antenna produces a shift in its frequency response, but there was not found information about the effect of the structural support. Simulations to known this effect were performed considering two types of material for the structural support. A patch antenna, designed for Wi-Fi (2.4 GHz), was used to analyze this effect.
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Papers by Alejandra Ocampo Díaz