Persona:
Sancristóbal Ruiz, Elio

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ORCID
0000-0003-2102-977X
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Sancristóbal Ruiz
Nombre de pila
Elio
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2020 - 20234
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Autor: Martín Gutiérrez, Sergio × Fecha de inicio: 2017 ×

Resultados de la búsqueda

Mostrando 1 - 4 de 4
  • Miniatura
    Publicación
    Exploring IoT Vulnerabilities in a Comprehensive Remote Cybersecurity Laboratory
    (MDPI, 2023) Delgado, Ismael; Sancristóbal Ruiz, Elio; Martín Gutiérrez, Sergio; Robles Gómez, Antonio
    With the rapid proliferation of Internet of things (IoT) devices across various sectors, ensuring robust cybersecurity practices has become paramount. The complexity and diversity of IoT ecosystems pose unique security challenges that traditional educational approaches often fail to address comprehensively. Current curricula may provide theoretical knowledge but typically lack the practical components necessary for students to engage with real-world cybersecurity scenarios. This gap hinders the development of proficient cybersecurity professionals capable of securing complex IoT infrastructures. To bridge this educational divide, a remote online laboratory was developed, allowing students to gain hands-on experience in identifying and mitigating cybersecurity threats in an IoT context. This virtual environment simulates real IoT ecosystems, enabling students to interact with actual devices and protocols while practicing various security techniques. The laboratory is designed to be accessible, scalable, and versatile, offering a range of modules from basic protocol analysis to advanced threat management. The implementation of this remote laboratory demonstrated significant benefits, equipping students with the necessary skills to confront and resolve IoT security issues effectively. Our results show an improvement in practical cybersecurity abilities among students, highlighting the laboratory’s efficacy in enhancing IoT security education.
  • Miniatura
    Publicación
    Cost-Effective Arduino-Based SPWM Control of an Inverter for Training Menacho
    (IEEE Xplore, 2021-12) Menacho, Antonio; Blázquez Merino, Manuel; Plaza,Pedro; Sancristóbal Ruiz, Elio; Martín Gutiérrez, Sergio; Clara Pérez; Manuel Castro; Ramón Carrasco Borrego
    In this work, a cost-effective sine pulse-width modulation (SPWM) control of an inverter has been implemented using Arduino UNO microcontroller, which can be used with various power stages. The proposed model is focused on power electronics training or learning. It allows users to practice the control of an inverter without the need to be in a face-to-face laboratory. The proposed model facilitates remote experimentation to acquire the required knowledge or competencies.
  • Miniatura
    Publicación
    Reviewing and analyzing peer review Inter-Rater Reliability in a MOOC platform
    (Elsevier, 2020-09) García Loro, Félix; Martín Gutiérrez, Sergio; Ruipérez Valiente, José A.; Castro Gil, Manuel Alonso; Sancristóbal Ruiz, Elio
    Peer assessment activities might be one of the few personalized assessment alternatives to the implementation of auto-graded activities at scale in Massive Open Online Course (MOOC) environments. However, teacher's motivation to implement peer assessment activities in their courses might go beyond the most straightforward goal (i.e., assessment), as peer assessment activities also have other side benefits, such as showing evidence and enhancing the critical thinking, comprehension or writing capabilities of students. However, one of the main drawbacks of implementing peer review activities, especially when the scoring is meant to be used as part of the summative assessment, is that it adds a high degree of uncertainty to the grades. Motivated by this issue, this paper analyses the reliability of all the peer assessment activities performed as part of the MOOC platform of the Spanish University for Distance Education (UNED) UNED-COMA. The following study has analyzed 63 peer assessment activities from the different courses in the platform, and includes a total of 27,745 validated tasks and 93,334 peer reviews. Based on the Krippendorff's alpha statistic, which measures the agreement reached between the reviewers, the results obtained clearly point out the low reliability, and therefore, the low validity of this dataset of peer reviews. We did not find that factors such as the topic of the course, number of raters or number of criteria to be evaluated had a significant effect on reliability. We compare our results with other studies, discuss about the potential implications of this low reliability for summative assessment, and provide some recommendations to maximize the benefit of implementing peer activities in online courses.
  • Miniatura
    Publicación
    Overview of embedded systems to build reliable and safe ADAS and AD systems
    (IEEE (Institute of Electrical and Electronic Engineers), 2020-02) Belmonte, Francisco J; Martín Gutiérrez, Sergio; Ruipérez Valiente, José A.; Castro Gil, Manuel Alonso; Sancristóbal Ruiz, Elio
    Automotive industry is a key sector in developed countries, taking advantage from Electronic and Semiconductor industries, for which this work is focused on, including an overview of embedded systems and related technologies for Advanced Driver Assistance Systems (ADAS) development, end user applications and their implementation (SoCs, Application Processors-APs, MCUs, software and boards), manufacturers solutions, architectures, trends and other aspects (like methodologies) to improve functional safety, reliability and performances. The current status to permit the transition from ADAS to Autonomous Driving (AD) systems and Self-Driving Cars (SDC) is also explored.