Anthropometric measurements are essential in various fields, such as sports, the automotive industry, clothing, health care, biomechanics, ergonomics, and gait analysis. However, the data collection process for these measurements is costly and time-consuming, and the data collected are not always precise and accurate. In this paper, some of the most widely reported machine vision systems (MVSs) are evaluated to determine the anthropometric length of body segments (BSs) used in gait analysis. The aim is to evaluate the performance of the MVSs and identify the most appropriate vision approach, in terms of accuracy, cost, speed, and computing performance. For this purpose, five BSs of the lower limb were selected and measured using both the MVS and the conventional manual anthropometric measurement (MAM) techniques. The results show that the MVSs represent an excellent alternative to measure the anthropometric parameters corresponding to the BSs, with some advantages in terms of sampling process time, precision, and equipment requirements.

As global energy consumption continues to rise, it is essential to adopt measures that regulate electricity use while still meeting the demands of modern society. These efforts align with the United Nations Sustainable Development Goals and are supported by various organizations. This study applies a methodology that combines the implementation of a Level 2 Energy Audit with the evaluation of the Electricity Consumption Index (ECI) at the Department of English of the Multidisciplinary Academic Unit of the Altiplano Region, Universidad Autónoma de San Luis Potosí. The study identifies strategies to reduce electricity consumption related to lighting systems and equipment operation throughout the department. Additionally, it assesses the percentage of users who promote and practice energy-saving habits. Key recommendations include transitioning the lighting system to LED technology, expected to reduce electricity consumption by 15, and implementing power factor correction measures, projected to yield an additional 6.17% in energy and cost savings. Together, these strategies could result in an estimated annual electricity savings of 21.17%, making them attractive to institutional decision-makers. Furthermore, by comparing the department’s ECI with a reference index established for educational institutions in temperate climate regions of Mexico, the study determines whether the proposed strategies should be implemented immediately or planned for the medium to long term. This decision-making framework represents the main contribution of the case study.

El propósito de este trabajo es abordar a través una visión proactiva, moderna y con buena voluntad, una temática que preocupa a los profesores que enseñan en el ámbito de la ingeniería, quienes son los que se encuentran ante un escenario que está repleto de efectos substanciales provocados por cambios vertiginosos en la cultura, la ciencia, la sociedad, la comunicación, o la economía. Se trata de revisar con cierto cuidado la compleja realidad de la educación en la ingeniería en el siglo veintiuno, tratando de comprender e implementar nuevos procesos educativos orientados a lograr la excelencia educativa, entendiendo que se trata de un análisis dinámico que implica reconocer que el capital humano es responsable de generar los cambios, y que éstos se generan como parte del efecto que la educación produce en el conocimiento, el desarrollo y el bienestar. En este trabajo se lleva a cabo una reflexión relacionada con las experiencias generadas por un grupo de profesores comprometidos con la educación en ingeniería, se justifica que el empleo de nuevas tecnologías en los modelos de enseñanza producen buenos resultados y se analiza información que puede ser de utilidad para actualizar planes de estudio en los programas académicos de ingeniería y los planes que se elaboran por parte de los tomadores de decisiones en las universidades, para enfrentar los retos que se presentan al educar al ingeniero del nuevo milenio.

One of the main challenges in hydrogen production via electrolysis is the reliable measurement of the electrical work supplied. In this work, a robust electronic data acquisition system was developed to obtain precise and accurate data to evaluate the electrical work. The electrolytic concentration and electrical work were the main variables in this study. The supplied electrical energy was analyzed under both constant and pulsed voltage conditions. The results reveal that hydrogen production depends on voltage amplitude, PWM, and electrolyte concentration. The applied voltage shows a slight positive correlation with hydrogen production. PWM influences hydrogen production in the range of 0 to 1 Hz, while no significant effect is observed at higher frequencies. Electrolyte concentration has a stronger influence on hydrogen production in the range of 0.125 to 0.25 M. The optimal operating conditions were identified at 0.375 M, 1 Hz and 6 VDC, and under these conditions the hydrogen production is 0.145 mL/s and the specific energy is 165 kWh/kg.