Sparse Multi-modal probabilistic Latent Semantic Analysis for Single-Image Super-Resolution

This paper presents a novel single-image super-resolution (SR) approach based on latent topics in order to take advantage of the semantics pervading the topic space when super-resolving images. Image semantics has shown to be useful to relieve the ill-posed nature of the SR problem, however the most accepted clustering-based approach used to define semantic concepts limits the capability of representing complex visual relationships. The proposed approach provides a new probabilistic perspective where the SR process is performed according to the semantics encapsulated by a new topic model, the Sparse Multimodal probabilistic Latent Semantic Analysis (sMpLSA). Firstly, the sMpLSA model is formulated. Subsequently, a new SR framework based on sMpLSA is defined. Finally, an experimental comparison is conducted using seven learningbased SR methods over three different image datasets. Experiments reveal the potential of latent topics in SR by reporting that the proposed approach is able to provide a competitive performance

Extensional orogenic collapse captured by strike-slip tectonics:

The late Paleozoic collision between Gondwana and Laurussia resulted in the polyphase deformation and magmatism that characterizes the Iberian Massif of the Variscan orogen. In the Central Iberian Zone, initial con- tinental thickening (D1; folding and thrusting) was followed by extensional orogenic collapse (D2) responsible for the exhumation of high-grade rocks coeval to the emplacement of granitoids. This study presents a tectonometamorphic analysis of the Trancoso-Pinhel region (Central Iberian Zone) to ex- plain the processes in place during the transition froman extension-dominated state (D2) to a compression-dom- inated one (D3).Wereveal the existence of low-dipping D2 extensional structures later affected by several pulses of subhorizontal shortening, each of them typified by upright folds and strike-slip shearing (D3, D4 and D5, as identified by superimposition of structures). The D2 Pinhel extensional shear zone separates a low-grade domain from an underlying high-grade domain, and it contributed to the thermal reequilibration of the orogen by facil- itating heat advection from lower parts of the crust, crustal thinning, decompression melting, and magma intru- sion. Progressive lessening of the gravitational disequilibrium carried out by this D2 shear zone led to a switch from subhorizontal extension to compression and the eventual cessation and capture of the Pinhel shear zone by strike-slip tectonics during renewed crustal shortening. High-grade domains of the Pinhel shear zone were folded together with low-grade domains to define the current upright folded structure of the Trancoso-Pinhel re- gion, the D3 Tamames-Marofa-Sátão synform. Newdating of syn-orogenic granitoids (SHRIMP U\\Pb zircon dat- ing) intruding the Pinhel shear zone, together with the already published ages of early extensional fabrics constrain the functioning of this shear zone to ca. 331–311 Ma, with maximum tectonomagmatic activity at ca. 321–317 Ma. The capture and apparent cessation of movement of the Pinhel shear zone occurred at ca. 317– 311 Ma

Diseño de filtros planares para radiometría

Diseño de tres prototipos de filtros para apliaciones de radiometría (LICEF) -Filtro microstrip de orden 6, con dos ceros de transmisión. Síntesis de filtros sin pérdidas. -Filtro microstrip asíncrono de orden 6, con un cero de transmisión. Síntesis de filtros sin pérdidas -Filtro microstrip de orden 6 , con dos ceros de transmisión. Síntesis por técnicas avanzadas de filtros con pérdidas. Procedimiento: -Anális de resonadores sobre diferentes dieléctricos -Síntesis a partir de matriz de acoplamientos -Simulación con ADS -Simulación con Momentum -Comparación de prototipo

Strike-slip shear zones of the Iberian Massif: Are they coeval?

Strike-slip shear zones of the Variscan orogen are used to derive the evolution of paleostrain and discuss the kinematics of the waning stages of the Gondwana-Laurussia collision during the amalgamation of Pangea. In the Iberian Massif, the recognition of three late Carboniferous deformation events related to strike-slip tectonics (D3, D4, D5) in the Trancoso-Pinhel region (Portugal) reveals that late orogenic transcurrent deformation was episodic and occurred in a short period of time (<15 m.y.). Early stages of strike-slip deformation included dextral and sinistral shear zones and orogen-parallel upright folds (D3; ca. 311 Ma). These structures followed the development of extensional shear zones (D2) during the tectonothermal reequilibration of the orogen. D3 structures were deflected and folded by the sinistral D4 Juzbado-Penalva do Castelo shear zone, dated as ca. 309–305 Ma by SHRIMP (sensitive high-resolution ion microprobe) U-Pb zircon dating of synkinematic granitoids. D3 and D4 structures were folded under east-west compression (D5) influenced by the strike-slip movement of the dextral Porto-Tomar shear zone. Variscan movement along the Porto-Tomar shear zone started ca. 304 Ma (onset of the Buçaco basin and syn-D5 granites), but ceased before ca. 295 Ma (age of the final closure of the Ibero-Armorican arc and crosscutting granites). The contrasting geometry, kinematics, and timing of these strike-slip shear zones are explained by deformation partitioning upon a rheologically inhomogeneous crust with structural and tectonothermal anisotropies generated during previous deformation. The convergence vector between Gondwana and Laurussia during D3–D5 remained the same, and was equivalent to the vector that explains the previous tectonic record (D2) in central and northwestern Iberia

Does a CDO enhance Company Inventiveness? An Empirical Study on new Managerial Positions and Innovation

Digital technology has advanced rapidly in the last few years. Consequently, companies need to transform their business and operations models to keep up with these advances, placing digital transformation (DT) as a top priority. Beyond the possible effects of using more digital technologies, is more innovation. One way in which companies can stimulate DT is by creating a new top-management position, the Chief Digital Officer (CDO). Although evidence has been found about the relationship between digital technologies and innovation, the role of the CDO as an enabler has been less studied. We use difference-in-difference estimators to measure this effect, using a unique dataset with 39 companies that appointed a CDO and 39 comparable companies that did not as a control group. We find a significant increase in patent filings as early as the first year CDO’s appointment. We find evidence that a managerial role can have an effect on innovation

W-NetPan: Double-U network for inter-sensor self-supervised pan-sharpening

The increasing availability of remote sensing data allows dealing with spatial-spectral limitations by means of pan-sharpening methods. However, fusing inter-sensor data poses important challenges, in terms of resolution differences, sensor-dependent deformations and ground-truth data availability, that demand more accurate pan-sharpening solutions. In response, this paper proposes a novel deep learning-based pan-sharpening model which is termed as the double-U network for self-supervised pan-sharpening (W-NetPan). In more details, the proposed architecture adopts an innovative W-shape that integrates two U-Net segments which sequentially work for spatially matching and fusing inter-sensor multi-modal data. In this way, a synergic effect is produced where the first segment resolves inter-sensor deviations while stimulating the second one to achieve a more accurate data fusion. Additionally, a joint loss formulation is proposed for effectively training the proposed model without external data supervision. The experimental comparison, conducted over four coupled Sentinel-2 and Sentinel-3 datasets, reveals the advantages of W-NetPan with respect to several of the most important state-of-the-art pan-sharpening methods available in the literature. The codes related to this paper will be available at https://github.com/rufernan/WNetPan

Adquisición y visualización de vídeo 3D

La visualización de imágenes en 3D es posible gracias a los sistemas estereoscópicos, que nos permiten capturar diferentes vistas de una misma escena y mediante el procesado de estas se consigue extraer información de profundidad que nos permite realizar el efecto. El sistema estereoscópico está formado por dos cámaras convencionales situadas a una distancia de unos 65mm con el fin de simular la vista humana. El objetivo de este proyecto es realizar un sistema estereoscópico y procesar las imágenes obtenidas por este sistema, para finalmente lograr el efecto 3D. Esto lo logramos por medio de un proceso de calibración mediante los parámetros intrínsecos (internos de la cámara) y extrínsecos (informan de la rotación y traslación de los ejes de referencia de las cámaras respecto a los de la escena), conseguidos a través de imágenes controladas. Este proceso es conocido como rectificación del par estéreo y consiste en alinear los puntos de las dos vistas de modo que consigamos tener una correspondencia entre las dos vistas y la escena. Una vez calibrado el sistema estereoscópico se procesan las imágenes para visualizarlas en diferentes modos: anaglífico (método de visualización directa) y Side by Side (método que requiere de procesado y dispositivos necesarios para visualizar mediante la técnica de secuencia de frames alternados). Por tanto, se obtienen diferentes modos de visualización para su posterior transmisión, objetivo de otros TFC. El sistema estereoscópico es la fase inicial de un sistema completo de transmisión de imágenes, el cual dará el flujo de entrada con las posibilidades anteriormente expuestas. El sistema completo está compuesto por las siguientes fases: adquisición, codificación, transmisión, decodificación y visualización de imágenes en tres dimensiones