Design of online practical lessons in colorimetry

Applied colorimetry is an important module in the program of the elective subject "Colour Science: industrial applications”. This course is taught in the Optics and Optometry Degree and it has been used as a testing for the application of new teaching and assessment techniques consistent with the new European Higher Education Area. In particular, the main objective was to reduce the attendance to lessons and encourage the individual and collective work of students. The reason for this approach is based on the idea that students are able to work at their own learning pace. Within this dynamic work, we propose online lab practice based on Excel templates that our research group has developed ad-hoc for different aspects of colorimetry, such as conversion to different colour spaces, calculation of perceptual descriptors (hue, saturation, lightness), calculation of colour differences, colour matching dyes, etc. The practice presented in this paper is focused on the learning of colour differences. The session is based on a specific Excel template to compute the colour differences and to plot different graphs with these colour differences defined at different colour spaces: CIE ΔE, CIE ΔE94 and the CIELAB colour space. This template is implemented on a website what works by addressing the student work at a proper and organized way. The aim was to unify all the student work from a website, therefore the student is able to learn in an autonomous and sequential way and in his own pace. To achieve this purpose, all the tools, links and documents are collected for each different proposed activity to achieve guided specific objectives. In the context of educational innovation, this type of website is normally called WebQuest. The design of a WebQuest is established according to the criteria of usability and simplicity. There are great advantages of using WebQuests versus the toolbox “Campus Virtual” available in the University of Alicante. The Campus Virtual is an unfriendly environment for this specific purpose as the activities are organized in different sectors depending on whether the activity is a discussion, an activity, a self-assessment or the download of materials. With this separation, it is more difficult that the student follows an organized sequence. However, our WebQuest provides a more intuitive graphical environment, and besides, all the tasks and resources needed to complete them are grouped and organized according to a linear sequence. In this way, the student guided learning is optimized. Furthermore, with this simplification, the student focuses on learning and not to waste resources. Finally, this tool has a wide set of potential applications: online courses of colorimetry applied for postgraduate students, Open Course Ware, etc.

Contradicciones del significado de la actividad físico-deportiva en las identidades corporales de las chicas adolescentes

Dentro de la estructura de género que impone la construcción social del cuerpo femenino, el sentimiento de inadecuación del propio cuerpo parece caracterizar la configuración de las identidades corporales femeninas en la adolescencia, motivando que la relación que establecen muchas chicas jóvenes con la actividad físico-deportiva sea compleja y a menudo problemática. Siguiendo un enfoque feminista post-estructuralista, este trabajo se centra en tres conflictos: 1) La actividad física para perder peso, instrumentalizada dentro de los discursos para alcanzar el ideal de belleza o luchar contra la obesidad; 2) El límite socialmente construido para las chicas deportistas entre lo que se considera un tono muscular atractivo y un cuerpo excesivamente musculoso; 3) Los procesos de sexualización y ansiedad física social debido a la exposición del cuerpo a una mirada masculina no deseada en diferentes contextos de práctica físico-deportiva.

Mesoporous materials for clean energy technologies

Alternative energy technologies are greatly hindered by significant limitations in materials science. From low activity to poor stability, and from mineral scarcity to high cost, the current materials are not able to cope with the significant challenges of clean energy technologies. However, recent advances in the preparation of nanomaterials, porous solids, and nanostructured solids are providing hope in the race for a better, cleaner energy production. The present contribution critically reviews the development and role of mesoporosity in a wide range of technologies, as this provides for critical improvements in accessibility, the dispersion of the active phase and a higher surface area. Relevant examples of the development of mesoporosity by a wide range of techniques are provided, including the preparation of hierarchical structures with pore systems in different scale ranges. Mesoporosity plays a significant role in catalysis, especially in the most challenging processes where bulky molecules, like those obtained from biomass or highly unreactive species, such as CO2 should be transformed into most valuable products. Furthermore, mesoporous materials also play a significant role as electrodes in fuel and solar cells and in thermoelectric devices, technologies which are benefiting from improved accessibility and a better dispersion of materials with controlled porosity.

Spectroelectrochemical Study of the Photoinduced Catalytic Formation of 4,4′-Dimercaptoazobenzene from 4-Aminobenzenethiol Adsorbed on Nanostructured Copper

Surface-enhanced raman scattering (SERS) spectra of self-assembled monolayers of 4-aminobenzenethiol (4-ABT) on copper (Cu) and silver (Ag) surfaces decorated with Cu and Ag nanostructures, respectively, have been obtained with lasers at 532, 632.8, 785, and 1064 nm. Density functional theory (DFT) has been used to obtain calculated vibrational frequencies of the 4-ABT and 4,4′-dimercaptoazobenzene (4,4′-DMAB) molecules adsorbed on model Cu surfaces. The features of the SERS spectra depend on the electrode potential and the type and power density of the laser. SERS spectra showed the formation of the 4,4′-DMAB on the nanostructured Cu surface independently of the laser employed. For the sake of comparison SERS spectra of a self-assembled monolayer of the 4-ABT on Ag surfaces decorated with Ag nanostructures have been also obtained with the same four lasers. When using the 532 and 632.8 nm lasers, the 4,4′-DMAB is formed on Cu surface at electrode potentials as low as −1.0 V (AgCl/Ag) showing a different behavior with respect to Ag (and others metals such as Au and Pt). On the other hand, the surface-enhanced infrared reflection absorption (SEIRA) spectra showed that in the absence of the laser excitation the 4,4′-DMAB is not produced from the adsorbed 4-ABT on nanostructured Cu in the whole range of potentials studied. These results point out the prevalence of the role of electron–hole pairs through surface plasmon activity to explain the obtained SERS spectra.

Aprendiendo a mirar profesionalmente el pensamiento matemático de los estudiantes en el contexto de las prácticas de enseñanza. El papel de las narrativas

Este estudio examina el papel de las narrativas como una herramienta para ayudar a los estudiantes para maestro a desarrollar la competencia mirar profesionalmente el pensamiento matemático de los estudiantes. Durante las prácticas en los centros, se pidió a 41 estudiantes para maestro que escribieran una narrativa en la que se identificaran evidencias de lo que consideraban manifestaciones de la comprensión matemática de los estudiantes. Los resultados muestran que la tarea de escribir sucesos del aula centrados en la manera en la que los estudiantes resolvían los problemas en forma de narrativas, ayudó a los estudiantes para maestro a focalizar y estructurar su manera de mirar. Mostraremos a través de las narrativas escritas algunas características de cómo los estudiantes para maestro estaban “mirando” el desarrollo del pensamiento numérico en los estudiantes de educación primaria.

Nuevos medios y empresas innovadoras. El caso de las agencias de medios

Los medios digitales abren nuevos horizontes para la investigación y la planificación publicitaria. Las agencias de medios deben adaptar su actividad a esta nueva realidad con el propósito de seguir llegando a los públicos y aprovechar las oportunidades de negocio. Este artículo plantea que este proceso de asimilación de los nuevos medios en las campañas publicitarias amplía los servicios ofrecidos por las agencias, construyendo los pilares para que las mismas sean consideradas empresas innovadoras. Para ello, se observan las diez agencias de medios españolas que más inversión publicitaria gestionan, de acuerdo con el ranking de Infoadex. Estas empresas contribuyen a la iniciativa “Unión por la innovación” de la Estrategia Europea 2020.