Eduardo Quevedo Gutiérrez

Universidad de Las Palmas de Gran Canaria | ULPGC · Instituto Universitario de Microelectrónica Aplicada (IUMA)

La incorporación de los números enteros en la enseñanza de las matemáticas supone una ruptura con la representación de número construida a partir de los números naturales e implica un cambio profundo en el pensamiento matemático de los alumnos. En esta investigación se estudia la incorporación de los números enteros en la enseñanza, analizando las...

The gender gap in STEM vocations among high school students still remains a troubling reality. Several studies indicate that students in general have less interest in science and technology subjects, and this disparity is even more distinguishable among female students. In fact, the aforementioned gender gap in STEM begins to manifest itself at an...

The challenges associated with the education in Science, Technology, Engineering, and Mathematics (STEM) disciplines can be mitigated using didactic videos, but there are other challenges when considering such potential resources. Amautas is a new platform created to facilitate the search and pedagogical integration of good-quality didactic videos,...

Cancer is currently one of the leading causes of death worldwide. Innovative methods that allow early and accurate detection of this disease need to be developed to increase the recovery rate of patients, as accurately distinguishing between diseased and healthy brain tissue for safe surgical resection is a challenge. Research has demonstrated that...

Didactic videos have proven to be particularly beneficial for Science, Technology, Engineering and Mathematics (STEM) education challenges. This is due to their contribution to the reduction of the intrinsic cognitive load, as well as fostering connections among subjects to promote generative processing. This fact, together with the wide presence o...

This study conducted in the academic year 2022/2023 evaluates the state of students’ computational thinking during the transition from Early Childhood Education to Primary Education. The research questions focus on variations in computational thinking between third-year Early Childhood Education and first-year Primary Education students, as well as...

Information and Communication Technologies (ICT) are crucial in contemporary society, with 3D printing being a notable application. While widely used, its implementation in schools faces challenges such as long printing times, material wastage, energy consumption, and limited accessibility. Addressing these challenges, remote laboratories offer a v...

The persistence of gender inequality in STEM careers among high school students represents a significant and ongoing concern. A decline in interest in science and technology, particularly among female students, is a notable finding in the research. From an early age, this disparity intensifies, prompting a comprehensive examination of the factors t...

El pensamiento computacional se considera una competencia universal, que debe agregarse a la capacidad analítica de cada niño como un ingrediente vital en su aprendizaje escolar. En este artículo se presenta una reflexión sobre qué es el pensamiento computacional, así como una revisión del enfoque mediante el cual plantear su enseñanza tanto desde...

El aprendizaje de disciplinas de Ciencia, Tecnología, Ingeniería y Matemáticas (STEM, por sus siglas en inglés) se asocia comúnmente a una dificultad específica debido a la alta presencia de conceptos abstractos. Este factor se ve enfatizado en el caso de las Matemáticas, lo que provoca la aparición de estrés y ansiedad frente al aprendizaje. En es...

El uso de metodologías activas en el aula, en combinación con la progresiva integración de tecnología educativa, contribuye al fomento de una aproximación competencial en la enseñanza, que al mismo tiempo es capaz de mejorar los niveles de motivación e implicación del alumnado. Mediante el uso de metodologías activas se puede desarrollar de manera...

La inclusión del Pensamiento Computacional en los currículos de la educación no universitaria hace necesaria su correspondiente implementación en la formación inicial del futuro docente. Con objetivo de integrarlo a través de metodologías activas para la adquisición de competencias matemáticas, se plantea el proyecto de innovación educativa Metodol...

Research has been conducted on computational thinking at different educational levels. However, there is a lack of information regarding the transition from one stage to another, especially from Early Childhood Education to Primary Education. This study was executed during the academic year 2022/2023 in two schools in Gran Canaria: CEIP La Zafra an...

En esta investigación se estudia la capacidad del alumnado para inventar situaciones aditivas con números enteros. Para ello se analizan las producciones de 266 estudiantes de 6º de Educación Primaria y 1º de Educación Secundaria al transferir la situación aditiva 2 - 3= -1 desde la dimensión abstracta a la dimensión contextual. Los resultados reve...

Engineering undergraduates face some specific challenges during their studies, such as an intense presence of abstract concepts in their subjects as well as the inability to connect different technical subjects into the big picture of the degree. This is also common to other STEM (Science, Technology, Engineering and Mathematics) disciplines. Multi...

This article demonstrates that didactic videos have the potential to enhance quality perception, performance and interest in engineering education. Emergency Remote Learning (ERL) imposed challenging conditions on education, and its impact was especially noticeable in the Science, Technology, Engineering and Mathematics (STEM) disciplines. This is...

Hyperspectral Imaging (HSI) is increasingly adopted in medical applications for the usefulness of understanding the spectral signature of specific organic and non-organic elements. The acquisition of such images is a complex task, and the commercial sensors that can measure such images is scarce down to the point that some of them have limited spat...

Digital competence of academics has been progressively gaining relevance during the last decade in the context of an exponential growth of digital devices, tools and applications that are available for education enhancement. Frameworks such as DigCompEdu intend to establish a common ground for institutions to evaluate and foster their academics' di...

El auge de las Tecnologías de la Información y la Comunicación dentro del campo de la educación ha convertido estas herramientas en elementos imprescindibles para desarrollar el proceso de enseñanza y aprendizaje. Gracias a estos recursos, los docentes agilizan procesos y dotan al alumnado de unas competencias digitales actualizadas a la demanda de...

This dataset includes the experience integrating Didactic Videos within "Electrical Machines I" subject (BSc in Electrical Engineering from the School of Industrial, Aerospace and Audiovisual Engineering of Terrassa (ESEIAAT), Universitat Politècnica de Catalunya (UPC)). Instructions: This dataset includes the following documents: PDF including...

The increasing prevalence of chronic non-communicable diseases makes it a priority to develop tools for enhancing their management. On this matter, Artificial Intelligence algorithms have proven to be successful in early diagnosis, prediction and analysis in the medical field. Nonetheless, two main issues arise when dealing with medical data: lack...

Readers of the journal Education Sciences probably agree that playing games comes naturally—we all know how to play some game—however, because of the complexity of gaming, it is almost exclusively limited to mammals with regard to all animals: almost 80% of mammals use some sort of game for learning [...]

Full comprehension of abstract concepts present in engineering education has been usually considered challenging. Engaging multimedia resources have proven to be useful pedagogical aids to increase students’ motivation. In fact, already existing dissemination videos might be suitable to fulfill this objective. This research aims to contribute asses...

The objective of this research is to study the Scratch programming language as a didactic tool to teach functions. The introduction of didactic tools allowing comprehension in simple and attractive ways is required. Given the traditional teaching/learning system, it is necessary to organize participatory and collaborative dynamic classrooms, which...

Early algebra proposes to incorporate algebra in primary school from the first years of schooling. The success of this incorporation depends, to a large extent, on the training of teachers, so the objective of this article is to study whether the degree of algebraic knowledge of student teachers at the beginning of their training. To conduct this,...

EDUROV is an educational underwater robot proposal from the researchers of the Oceanic Platform of Canary Islands (PLOCAN) and the Computer Vision and Robotics research group of the University of Girona (VICOROB), launched in January 2012 with the support of the Spanish Foundation for Science and Technology (FECyT). This program has evolved in the...

New technologies have offered great alternatives for education. In this context, we place robotics and programming as innovative and versatile tools that adapt to active methodologies. With the arrival of COVID-19 and lockdowns, physical resources were kept out of use, and the virtual lectures did not propose to incorporate these elements in a mean...

Background The use of novel didactic approaches in Science, Technology, Engineering, Arts and Mathematics (STEAM) academic programs is a relevant topic in current educational research. In this context, Project‐Based learning is shown as a promising didactic tool for improving the motivation of engineering students. Objective To propose an adapted...

This paper shows new contributions in the detection of skin cancer, where we present the use of a customized hyperspectral system that captures images in the spectral range from 450 to 950 nm. By choosing a 7 × 7 sub-image of each channel in the hyperspectral image (HSI) and then taking the mean and standard deviation of these sub-images, we were a...

En un modelo educativo donde se apuesta cada vez más por las competencias STEM (Science, Technology, Engineering and Mathematics), basadas en la ciencia, la tecnología, la ingeniería y las matemáticas, resulta fundamental introducir los aspectos relativos a la creatividad a través de las artes, pasando entonces el modelo STEAM (Science, Technology,...

Hyperspectral imaging (HSI) is a technology able to measure information about the spectral reflectance or transmission of light from the surface. The spectral data, usually within the ultraviolet and infrared regions of the electromagnetic spectrum, provide information about the interaction between light and different materials within the image. Th...

The implementation of robotics in schools is inevitable in the years to come. Currently, this integration is not feasible for all schools (especially public ones) due to the high economic cost, which in most cases offer a closed system (both hardware and software) which limits the robot to a single educational level. The educational innovation proj...

Educational robotics has come to the classrooms and is here to stay. STEAM (Science, Technology, Engineering, Arts and Mathematics) learning has put the use of robots in classrooms in vogue, though these are mostly closed products and at a high price. The educational innovation project “Design, implementation and tests of a modular low-cost educati...

El uso del humor puede suponer una herramienta beneficiosa a la hora de captar la atención de los estudiantes y la retención de los conceptos en las aulas, especialmente cuando se trata de las disciplinas STEAM (Ciencia, Tec-nología, Arte y Matemáticas, por sus iniciales en inglés) u otro tipo de áreas del conocimiento abstractas y complejas. Sus s...

Skin cancer is one of the most common forms of cancer worldwide and its early detection its key to achieve an effective treatment of the lesion. Commonly, skin cancer diagnosis is based on dermatologist expertise and pathological assessment of biopsies. Although there are diagnosis aid systems based on morphological processing algorithms using conv...

El uso de herramientas didácticas de apoyo a la docencia puede ser un recurso útil a la hora de mejorar la actitud hacia el aprendizaje de las disciplinas STEAM (Science, Technology, Engineering, Arts and Mathematics). En este artículo se presenta un caso de aplicación de la creación de materiales didácticos de bajo coste, exponiendo la metodología...

El concepto de función es un elemento fundamental del currículo de matemáticas de la Educación Secundaria Obligatoria, que está presente en otras muchas asignaturas y se utiliza en situaciones de la vida cotidiana en la que se relacionan dos magnitudes, como en estudios de crecimiento poblacional, estudios económicos o fenómenos naturales. Por otra...

Super-resolution (SR) covers a set of techniques whose objective is to improve the spatial resolution of a video sequence or a single frame. In this scope, fusion SR techniques obtain high-resolution (HR) frames taking as a reference several low-resolution (LR) frames contained in a video sequence. This paper is based on a selective filter to decid...

Image super-resolution (SR) is a process that enhances the resolution of an image or a set of images beyond the resolution of the imaging sensor. Although there are several super-resolution methods, fusion super-resolution techniques are well suited for real-time imple-mentations. In fusion super-resolution, the high-resolution images are reconstru...

Rich interactive multimedia enables primary school students to enhance the learning process wherever they are. Teachers and parents can use specific videos produced in order to reinforce concepts with children, by showing real life scenarios. At the same time, it is interesting to check how adults would like to review simple concepts with these vid...

The use of humor could be a useful tool in order to increase students' attention and their concept retention in classrooms, particularly regarding to STEAM (Science, Technology, Engineering, Arts and Mathematics) learning or other abstract and complex knowledge. This paper presents the advantages of humor introduction in teaching activity at differ...

This work presents the computational acceleration of a proprietary Super-Resolution (SR) algorithm (patented) for image and video enhancement. The considered algorithm is based on fusion SR techniques. The version proposed in this paper consists on the comparison of frames divided into Macro Blocks (MB) of fixed dimensions and on acquisition from a...

Image spatial resolution is critical in several fields such as medicine, communications or satellite, and underwater applications. While a large variety of techniques for image restoration and enhancement has been proposed in the literature, this paper focuses on a novel Super-Resolution fusion algorithm based on a Multi-Camera environment that per...

Trying to reach diffraction-limited astronomical observations from ground-based telescopes is very challenging due to the atmospheric effects contributing to a general blurring of the images. However, astronomy is not the only science facing turbulence problems; obtaining quality images of the undersea world is as ambitious as it is on the sky. One...

Underwater Wireless Sensor Networks (UWSNs) using electromagnetic (EM) technology in marine shallow waters are examined, not just for environmental monitoring but for further interesting applications. Particularly, the use of EM waves is reconsidered in shallow waters due to the benefits offered in this context, where acoustic and optical technolog...

In the ELTs era, where the need for versatile and innovative solutions to produce very high spatial resolution images has become a major issue, the search of synergies with other science fields seems a logic step. One of the considered alternatives to reach high-resolution images is the use of several frames of the same target, this approach is kno...

In the first part of the paper, we modeled and characterized the underwater radio channel in shallowwaters. In the second part,we analyze the application requirements for an underwaterwireless sensor network (U-WSN) operating in the same environment and perform detailed simulations. We consider two localization applications, namely self-localizatio...

PERSEUS (Protection of European Borders and Seas Through the Intelligent Use of Surveillance) was selected as a demonstration project in the FP7 Security call FP7-SEC-2010-1. Its goals were to define and demonstrate a European concept for maritime surveillance systems and to deploy it across the Mediterranean and Atlantic Ocean. The systems were se...

The authors present full wave simulations and experimental results of propagation of electromagnetic waves in shallow seawaters. Transmitter and receiver antennas are ten-turns loops placed on the seabed. Some propagation frameworks are presented and simulated. Finally, simulation results are compared with experimental ones.

We analyze the problem of localization algorithms for underwater sensor networks. We first characterize the underwater channel for radio communications and adjust a linear model with measurements of real transmissions. We propose an algorithm where the sensor nodes collaboratively estimate their unknown positions in the network. In this setting, we...

The FP7 funded TROPOS project approach is to develop a modular multi-use platform for use in deep waters, coupling several activities, amongst which aquaculture production and renewable energy conversion, with a focus on the Mediterranean, tropical and sub-tropical regions. In this paper, the environmental monitoring, afety and security aspects of...

Super-Resolution (SR) consists in processing an image or a set of images in order to enhance the resolution of a video sequence or a single frame. In this paper, fusion SR techniques are considered, where High-Resolution (HR) images are constructed from several observed Low-Resolution (LR) images, thereby increasing the high-frequency components an...

Variable Size Block-Matching Super-Resolution covers a set of techniques which objective is to improve the resolution of a video sequence or a single frame considering variable sized Macro-Blocks. In this paper, this approach is combined with a Multi-Camera system to take advantage from the spatial and temporal correlations between frames.

In this work, the factors of reduction of memory requirements and increase in memory traffic associated with the change from reference frame level (baseline algorithm) to macroblock-level for the Super-Resolution (SR) image restoration non-uniform grid projection algorithm are compared over combinations of algorithm parameter values. Then, based on...

The objective of the FP7 funded TROPOS project is to design a modular multi-use platform for use in deep waters, with a focus on the Mediterranean, tropical and sub-tropical regions. In this paper, the related environmental aspects are considered, where both legal and technical issues are addressed. The multiple purpose platforms can enlarge the be...

The Word fish utilization during the last decades, shows a rapid increase, as a result of the increase of population and an increase in the per capita consumption. Several projections have been made to predict this growth and currently the global food fish demands for 2030 is expected to be 183 million tones, of which Aquaculture has to contribute...

The Longest-Edge (LE) trisection of a triangle is obtained by joining the two points which divide the longest edge in three with the opposite vertex. If LE-trisection is iteratively applied to an initial triangle, then the maximum diameter of the resulting triangles is between two sharpened decreasing functions. This paper mathematically answers th...

Super-Resolution (SR) covers a set of techniques whose objective is to improve the resolution of a video sequence or a single frame. In this scope, a fusion SR algorithm has been used, where High-Resolution (HR) images are constructed from several observed Low-Resolution (LR) images. In this paper, this approach is combined with a Multi-Camera (MC)...

The key objective of the on-going TROPOS project is the development of a floating modular multi-use platform system for use in deep waters with an initial geographic focus on locations of Crete (Greece), Gran Canaria and Taiwan. The TROPOS multi-use platform system will be able to integrate a range of functions from the Transport, Energy, Aquacultu...

Georeferencing consists in establishing a relationship between information and geographic locations, usually through geospatial referencing (i.e., longitude and latitude coordinates). Super-Resolution is a technique that enhances the spatial resolution of an imaging system. In this paper, the integration of both Georeferencing and Super-Resolution...

PERSEUS has included technological innovations in the areas of detection and analysis applied to maritime security, trying to become the first European-scale maritime surveillance system able to detect small ships and low-high flights. The overall technical and operational approach will pool multiple sensors, monitoring platforms and information so...

Super-Resolution (SR) covers a set of techniques which objective is to improve the resolution of a video sequence or a single frame. In this scope, a fusion SR algorithm has been used, where High-Resolution (HR) images are constructed from several observed Low-Resolution (LR) images. In this paper, this approach is combined with a Multi-Camera (MC)...

In order to play georeferenced videos, The Oceanic Platform of the Canary Islands (PLOCAN) is currently using a desktop-based software. In this paper, a port to a web-based video player is reviewed. In addition to its main advantages, new features are also discussed, such as the download of superresolved frames.

The FP7 funded TROPOS project approach is to develop a modular multi-use platform for use in deep waters, with a focus on the Mediterranean, tropical and sub-tropical regions. In this paper, three different platforms configurations, - which have been designed to show the synergies and compatibilities among the platform uses of Transport, Energy, Aq...

Super-Resolution (SR) is a set of techniques which objective is to increase and improve the