BUSCADOR RECOLECTA

Dataset 01: ZIP file containing the near field radiated by the horn antenna (more precisely, the S_21 parameter, which is proportional to the measured electric field). The ZIP file has 201 *.txt files, one *.txt file per frequency (the frequency value, in MHz, is indicated on the name of each *.txt file), Dataset 02: ZIP file containing the field scattered by the targets in the imaging domain (see the image “PictureSetup.png”). The ZIP file has 201 *.txt files, one *.txt file per frequency (the frequency value, in MHz, is indicated on the name of each *.txt file), This dataset corresponds to the measurements of a monostatic microwave imaging system, collected using the facility described in [1]. The first dataset, "Escatt_meas.mat", corresponds to the field scattered by the targets shown in the picture. Two targets were considered: a 18 cm long × 14 cm diameter metallic can, and a 18 cm diameter and 4 cm thick plastic disk, placed 22 cm above the metallic floor of the facility. The size of the scattered field acquisition domain was Lx × Ly = 65 cm × 40 cm, discretized every δx,y = 10 mm (λ/2 at the center frequency of 15 GHz), and placed 1 m above the floor of the measurement facility. The Tx and Rx antennas were two Standard Gain Horn (SGH) horn antennas [2]. The second dataset, "Erad_horn.mat" is the near field radiated by the Tx and Rx Standard Gain Horn (SGH) antennas in the 12-18 GHz frequency band. The field radiated by these antennas was measured in the same 12-18 GHz frequency band, in an acquisition domain discretized also every 10 mm, placed 50 cm above the SGH aperture. The field radiated by the SGH was processed using the backward transformation algorithm described in [3] to obtain the SGH aperture fields This dataset can be processed following the methodology described in [4],[5] (modified Delay-and-Sum algorithm) and in [6] (modified Fourier-based imaging algorithm). [1] A. Arboleya, Y. Alvarez, and F. Las-Heras, “Millimeter and submillimeter planar measurement setup,” in 2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2013, pp. 1–2. [2] (2022, 8) Specifications of the standard gain horn antenna SGH 639 from Narda. [Online]. Available: https://nscainc.com/wp-content/uploads/pdf/NARDA_640.pdf [3] J. Hanfling, G. Borgiotti, and L. Kaplan, “The backward transform of the near field for reconstruction of aperture fields,” in 1979 Antennas and Prop. Society Intl. Symposium, vol. 17, 1979, pp. 764–767. [4] Y. Alvarez Lopez and F. Las-Heras, “On the use of an equivalent currents-based technique to improve electromagnetic imaging,” IEEE Transactions on Instrumentation and Measurement, vol. 71, pp. 8004113, 2022. [5] Y. Alvarez Lopez, J. Laviada, A. Arboleya, and F. Las-Heras, "A backpropagation imaging technique for subsampled synthetic apertures," IEEE Transactions on Instrumentation and Measurement, vol. 72, pp. 4502316, 2023. [6] Y. Alvarez López and F. Las-Heras Andrés, "Improved Methods for Fourier-based Microwave Imaging," Sensors, Vol. 23, pp. 9250, 2023., Ministerio de Ciencia, Innovación y Universidades of Spain, Agencia Estatal de Investigación of Spain, and FEDER PID2021-122697OB-I00 (“METAIMAGER”)

La investigación explora las metodologías de las corporaciones educativas oficiales, como centros de formación profesional y escuelas de personas adultas; y por primera vez, la investigación aborda la formación realizada por las empresas. PALABRAS CLAVE: educación de adultos; formación en empresa; proyecto europeo; desarrollo profesional; metodología descriptiva., Comisión Europea Convocatoria de Propuestas 2019 (DOUE C384/4 de fecha 24.10.2018) EAC/A03/2018 (2018/C 384/04).

The hologram was measured in 18039 spatial points. A frequency sweep of 1601 points from 50 to 70 GHz has been made at each spatial point. Data are given in a .mat file in a struct with 4 fields: grid: 18039 x 3 matrix. Coordinates (x, y, z) correspond to columns 1, 2 and 3 respectively. Units are [meters]. frequencies: 1601 x 1 vector with the swept frequencies. Units are [Hz] Hologram: 18039 x 1601 matrix. Each row corresponds to the hologram in the frequency domain. Units are [V/m]. reference: 1601 x 1 vector. static reference branch for the swept frequencies. Units are [V/m]., Amplitude of the Field acquisition described in: A. Arboleya et al., "Freehand System for Probe-Fed Antenna Diagnostics by Means of Amplitude-Only Acquisitions," in IEEE Transactions on Instrumentation and Measurement, vol. 73, pp. 1-4, 2024, Art no. 8002004, doi: 10.1109/TIM.2024.3369150., 10.13039/501100011033-Ministerio de Ciencia e Innovación of Spain (MICIN), Agencia Estatal de Investigación of Spain (AEI), and the European Union NextGenerationEU/ Plan de Recuperación, Transformación y Resiliencia (Grant Number: TED2021-131975AI00/AEI/10.13039/501100011033 (ANTHEM5G)) 10.13039/501100008530-MICIN, AEI, and Fondo Europeo de Desarrollo Regional (FEDER) (Grant Number: PID2021-122697OB-I00/MCIN/AEI/10.13039/501100011033 (META-IMAGER)) 10.13039/100011941-Gobierno Principado de Asturias/FEDER (Grant Number: AYUD/2021/51706)

Esta investigación de carácter descriptivo analiza en qué medida una muestra aleatoria de 136 aplicaciones de software educativo orientado a niveles iniciales se corresponde con los planteamientos educativos y los rasgos clásicos de una unidad didáctica.

A completely chemo- and regioselective synthesis of pyrimidin-4(3H)-ones by reaction between 4,5-dihydro-1,2,4-oxadiazoles and chromium alkoxy alkynyl Fischer carbene complexes is reported. Overall, it is a formal (3+3)-cycloaddition where 4,5-dihydro-1,2,4-oxadiazoles partake for the first time in the intermolecular formation of 6-membered heterocycles. Three points of diversity have been explored, and usually, synthetically useful isolated yields are reached, including one example at gram-scale. A reasonable mechanism, supported by DFT calculations, is proposed., - Ministerio de Ciencia, Innovación y Universidades of Spain (Agencia Estatal de Investigación: PID2022-140635NB-I00, PID2019-107580GB-I00/AEI/10.13039/501100011033) - Agencia de Ciencia, Competitividad Empresarial e Innovacion Asturiana –SEKUENS – (SEK-25-GRU-GIC-24-030). - MCIU predoctoral FPI contract to S. S.-A.

Spanish Ministry of Economy and Competitiveness (MINECO), Spanish Ministry of Science and Innovation (MICINN) respectively and Asturias Regional Government.

Se presenta el primer protocolo inducido por luz visible para la preparación general de tiocianatos alquenilos a partir de bromuros alquenilos. La reacción es simple, se lleva a cabo bajo condiciones muy suaves y demuestra una amplia tolerancia a grupos funcionales. Además, se desarrolló un protocolo en flujo para permitir una ampliación eficiente de la síntesis de tiocianatos alquenilos, mejorando aún más la practicidad y el valor del método. Es importante destacar que estos tiocianatos alquenilos sirven como valiosos bloques de construcción para la construcción de diversas familias de moléculas que contienen azufre a través de trifluorometilaciones, cicloadiciones, oxidaciones y reacciones de formación de enlaces C–S o P–S., Se agradece sinceramente la beca predoctoral “Severo Ochoa” (BP21/050) concedida a H. F. P. por FICYT (Principado de Asturias) y la beca postdoctoral “Ramón y Cajal” concedida a M. P. (MCINN-24-RYC2022-035485-I) por el Ministerio de Ciencia e Innovación de España (Agencia Estatal de Investigación). También se agradece el apoyo financiero de este trabajo por parte del Ministerio de Ciencia e Innovación de España (Agencia Estatal de Investigación: MCINN-23-PID2022-140635NB-I00/MCIN/AEI/10.13039/501100011033/FEDER, UE) y la Universidad de Oviedo (PAPI-23-GR-COM-04).

Partiendo de la base de que el poder se construye, sobre todo, en la comunicación (Castells, 2009), se evidencia la importancia de la capacidad comunicativa. Dicho de otra manera: Comunicación es poder. No en vano, las grandes empresas y los gobiernos invierten muchos esfuerzos en su capacidad de comunicación. Al mismo tiempo, la competencia comunicativa a un nivel individual es un prerrequisito básico para la participación en los procesos de la sociedad, ya que permite a los individuos desarrollarse profesionalmente, integrarse socialmente y, por ende, lograr una realización personal más satisfactoria. Debido a la creciente globalización y digitalización tanto de la vida cotidiana como del mundo laboral, las fronteras entre países se desdibujan, las distancias se acortan y los procesos se internacionalizan. Por lo tanto, la comunicación debe ser también internacional, lo que implica la necesidad de aprender lenguas extranjeras y poder comunicarse en ellas. La competencia comunicativa en una o varias len-guas se convierte así en un requisito fundamental para la ciudadanía. Estos cambios socioeconómicas y las exigencias resultantes también se han registrado en el ámbito de la didáctica de las lenguas extranjeras y han contribuido a un cambio de paradigma, en el sentido de favorecer cada vez más el desarrollo de las diversas competencias, entre ellas la competencia comunicativa (Villa y Poblete, 2010). En este contexto, el principal objetivo del presente trabajo es investigar empíricamente el potencial que ofrece el aprendizaje mediante la comunicación en un entorno tándem para el desarrollo de competencias lingüísticas generales.

Data from the article "M. Garcia, F. Ortin, J. Quiroga. An Infrastructure to Deliver Synchronous Remote Programming Labs. Transactions on Learning Technologies, Volume 14(2), pp. 161-172, 2021. https://doi.org/10.1109/TLT.2021.3063298", With the abrupt nationwide lockdown caused by the COVID-19 pandemic, many universities suspended face-to-face activities. Some of them decided to continue their academic courses, adapting traditional approaches to online learning. An important challenge was to deliver programming labs over the Internet without important methodological changes, which might imply modifications of the learning outcomes. Most of the existing approaches to remote programming labs are based on asynchronous learning, where students work autonomously and contact the lecturers if they have any issues. The existing systems to provide synchronous programming labs are restricted to a single programming language or application type, and show significant interaction limitations. Therefore, we defined an infrastructure that allowed us to deliver synchronous programming labs over the Internet during the COVID-19 lockdown, as we used to do face-to-face. After using it for both programming labs and exams, students showed a high level of satisfaction. Compared to previous years, the use of our system produced no statistically significant difference in student's grades, pass and fail rates, or the number of students taking the lab exam. The network bandwidth, CPU, and memory resources consumed are sufficiently low to have allowed all the students to use it without any issues. Regardless of the pedagogical and methodological approach selected, our infrastructure provides the synchronous and remote delivery of programming labs, similar to the original face-to-face approach. Its features make it appropriate to deliver synchronous remote classes where strong lecturer-student interaction is required, and all the student work can be done with their computers., This work has been partially funded by the Spanish Department of Science, Innovation and Universities: project RTI2018-099235-B-I00. The authors have also received funds from the University of Oviedo through its support of official research groups (GR-2011-0040).