Throughout the last decade, there has been an increased demand for intricate flapping-wing drones with different capabilities than larger drones. The design of flapping-wing drones is focused on endurance and stability, as these are two of the main challenges of these systems. Researchers have recently been turning towards bioinspiration as a way to enhance aerodynamic performance. In this work, the propulsion system of a flapping-wing micro air vehicle is investigated to identify the limitations and drawbacks of specific designs. Each system has a tandem wing configuration inspired by a dragonfly, with wing shapes inspired by a bumblebee. For the design of this flapping-wing, a sizing process is carried out. A number of actuation mechanisms are considered, and two different mechanisms are designed and integrated into a flapping-wing system and compared to one another. The second system is tested using a thrust stand to investigate the impact of wing configurations on aerodynamic force production and the trend of force production from varying flapping frequency. Results present the optimal wing configuration of those tested and that an angle of attack of two degrees yields the greatest force production. A tethered flight test is conducted to examine the stability and aerodynamic capabilities of the drone, and challenges of flapping-wing systems and solutions that can lead to successful flight are presented. Key challenges to the successful design of these systems are weight management, force production, and stability and control.
The concept of Learning Analytics, as we understand it today, is relatively new but the practice of evaluating user behavior is not innovative. For years, technological development, along with other educational aspects, have encouraged, developed and facilitated this practice as a way of providing a personalized quality experience to students. The main goal of this study, carried out in the Primary Education Degree of the University of Murcia, was to research, from the perspective of Social Learning Analytics, how students learn and collaborate in online environments, specifically through their use of social media. With the idea of improving and optimizing future teaching experiences, a pilot study was conducted using weblog, Twitter and Facebook to work with different topics on the subject. The method used in this research was a participant observation and the analysis performed was both quantitative, based mainly on the data gathered from the learning analytics, and qualitative (analyzing students' content from comments). Results show that there was greater interaction on Facebook than weblogs, where students interacted to deal with aspects related to the learning process and the topic of the subject. This exchange of information grew during the development of the experience. In addition, learning analytics shows that there is a relationship between group members and their interaction and behavior in networks.
<p>Tanto en el contexto internacional como<br />nacional, se observa que cada vez es más<br />importante la concreción de las compe-<br />tencias digitales en el contexto educativo,<br />referidas tanto a los docentes como a los<br />discentes. Si nos fijamos de modo más es-<br />pecífico en los estudiantes, la competen-<br />cia digital es un amplio constructo teórico<br />que entre sus dimensiones sustenta la ne-<br />cesidad de analizar y potenciar el Entorno<br />Personal de Aprendizaje (PLE), constructo</p><p>que sustenta el Proyecto CAPPLE y que<br />nos permite comprender de modo global<br />cómo los estudiantes utilizan su compe-<br />tencia digital en sus procesos académicos<br />de aprendizaje. En este artículo mostra-<br />mos los principales resultados del Proyec-<br />to CAPPLE, un estudio exploratorio en el<br />que se ha utilizado un cuestionario ad<br />hoc para determinar las estrategias y he-<br />rramientas tecnológicas que los estudian-<br />tes universitarios de último curso (n=2054)<br />utilizan en los procesos de aprendizaje y<br />comunicación. El cuestionario ha sido va-<br />lidado con un triple procedimiento y un<br />alpha de Cronbach de 0.944. Las eviden-<br />cias obtenidas nos permiten desmitificar el<br />concepto de nativo digital, puesto que los<br />estudiantes de último curso de grado han<br />integrado las tecnologías para comunicar-<br />se en sus espacios personales y de ocio,<br />pero no tanto para su trabajo académico<br />en la universidad.</p>
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