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Long-crested wave generation and absorption for SPH-based DualSPHysics model
Full text linkThe present work presents a fully comprehensive implementation of wave generation and active wave absorption for second-order long-crested monochromatic and random waves in a WCSPH-based (Weakly Compressible Smoothed Particle Hydrodynamics) model. The open-source code DualSPHysics is used for the scope. The numerical flume resembles a physical wave facility, so that, the moving boundaries mimic the action of a piston-type wavemaker. The second-order wave generation system, capable of generating both monochromatic (regular) and random (irregular) waves, is implemented jointly with passive and active wave absorption. A damping system is defined as solution for passive absorption and is used to prevent wave reflection from fixed boundaries in the numerical flume. The use of active wave absorption allows avoiding spurious reflection from the wavemaker. These implementations are validated with theoretical solutions and experimental results, in terms of water surface elevation, wave orbital velocities, wave forces and capacity for damping the re-reflection inside the fluid domain.Xunta de Galicia | Ref. ED431F 2016/004Agencia Estatal de Investigación | Ref. ENE2016-75074-C2-1-RMinisterio de Economía y Competitividad | Ref. RYC-2013-1261
Approche sociopragmatique et pragmalinguistique de la formulation de bons vœux et des félicitations en espagnol
Full text linkLa cultura comunicativa española ha sido caracterizada como una cultura que tiende al uso de estrategias de cortesía positiva (Haverkate, 1994; Hickey, 2005). Esta tendencia, sin embargo, no es universal, ya que el fenómeno de la cortesía varía en cada grupo cultural. Esta variación tiene una repercusión directa en el ámbito de la enseñanza de segundas lenguas, pues los alumnos tenderán a transferir las normas sociopragmáticas y pragmalingüísticas de su L1 y esto acarrea consecuencias no deseadas a nivel social e interpersonal. El estudio de los actos de habla felicitar y formular buenos deseos desde la perspectiva sociopragmática y la pragmalingüística ofrece un conocimiento amplio de los procesos que se activan en la producción e interpretación de estos dos actos que, por ser ejemplos de actos de habla corteses, tienen un papel fundamental en la cultura española. La investigación también enriquece el proceso de enseñanza de la L2, pues ofrece información que facilitará el proceso de aprendizaje de las cuestiones pragmáticas del español a los alumnos .La culture communicative espagnole a été caractérisée comme une culture qui a tendance à utiliser des stratégies de politesse positive (Haverkate, 1994, Hickey, 2005). Cependant, cette tendance n’est pas universelle, puisque le phénomène de la politesse varie dans chaque groupe culturel. Cette variation a un impact direct sur l'enseignement des L2. En effet, les élèves ont tendance à transférer les normes sociopragmatiques et pragmalinguistiques de leur L1, ce qui peut avoir des conséquences indésirables au niveau social et interpersonnel. L'étude des actes de langage féliciter et formuler de bons vœux dans une perspective sociopragmatique et pragmalinguistique offre une connaissance approfondie des processus qui se déclenchent dans la production et l'interprétation de ces deux actes qui, comme exemples d'actes de langage polis, jouent un rôle essentiel dans la culture espagnole. La recherche enrichit également l'enseignement de la L2, du fait qu’elle offre des informations qui faciliteront le processus d'apprentissage des questions pragmatiques espagnoles aux élèves.The Spanish communicative culture has been described as a culture that tends towards the use of strategies of positive politeness (Haverkate, 1994; Hickey, 2005). This tendency, however, is not universal, since the politeness phenomenon varies with each cultural group. This variation has a direct impact on the L2 teaching process, as students will tend to transfer their L1 sociopragmatic and pragmalinguistic norms, which has undesirable consequences on the social and interpersonal level. The sociopragmatic and a pragmalinguistic study of congratulatory and wellwishing acts provides considerable insight into the processes activated when producing and interpreting these two acts, which, as examples of polite speech acts, have a key role in the Spanish culture. The research also enriches the L2 teaching process, since it offers information that will undoubtedly help students learn the pragmatics of Spanish
L’homme et le bestiaire dans le monde terrestre de la crypte de la cathédrale de Saint-Jacques-de-Compostelle
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Fugas e interferencias: VII International Performance Art Conference: 2022
No full textEstas actas de Fugas e Interferencias VII International Performance Art Conference 2022 presentan la recopilación de artículos procedentes de los ponentes invitados y de las comunicaciones seleccionadas por el Comité Científico. El conjunto de las ponencias ha sido presentado durante la séptima edición del congreso, que tuvo lugar los días 16, 17 y 18 de septiembre en la Casa de Campás de Pontevedra y el Centro Galego de Arte Contemporánea (CGAC) de Santiago de Compostela. El objetivo de la convocatoria de este congreso de ámbito internacional es centrar el punto de atención en el análisis de los nuevos comportamientos del arte de acción, tanto desde la práctica como desde la reflexión teórica, así como dentro del ámbito del comisariado. De este modo, los artículos seleccionados indagan sobre cuatro de los ejes temáticos que propone el encuentro
Automatic detection of podotactile pavements in urban environments through a deep learning-based approach on MLS/HMLS point clouds
No full textPedestrian accessibility is a critical dimension of sustainable and inclusive transportation systems, yet many cities lack reliable data on infrastructure features that support visually impaired users. Among these, podotactile paving plays a vital role in guiding movement and ensuring safety at intersections and transit nodes. However, tactile paving networks remain largely absent from digital transport inventories and automated mapping pipelines, limiting the ability of cities to systematically assess accessibility conditions. This paper presents a scalable approach for identifying and mapping podotactile areas from mobile and handheld laser scanning data, broadening the scope of data-driven urban modelling to include infrastructure elements critical for visually impaired pedestrians. The framework is evaluated across multiple sensing modalities and geographic contexts, demonstrating robust generalization to diverse transport environments. Across four dataset configurations from Madrid and Mantova, the proposed DeepLabV3+ model achieved podotactile F1-scores ranging from 0.83 to 0.91, with corresponding IoUs between 0.71 and 0.83. The combined Madrid–Mantova dataset reached an F1-score of 0.86 and an IoU of 0.75, highlighting strong cross-city generalization. By addressing a long-standing gap in transportation accessibility research, this study demonstrates that podotactile paving can be systematically extracted and integrated into transport datasets. The proposed approach supports scalable accessibility auditing, enhances digital transport models, and provides planners with actionable data to advance inclusive and equitable mobility.Ministerio de Ciencia e Innovación | Ref. RYC2020-029193-IMinisterio de Ciencia, Innovación y Universidades | Ref. PID2024-157803OB-I00Agencia Estatal de Investigación | Ref. CNS2022-135730Xunta de Galicia | Ref. ED431F 2022/0
Problems raised by DAC 6 concerning taxpayer’s rights and fundamental freedoms. Particular reference to DAC 6 implementation in the Spanish legal order
Full text linkThis work aims to identify some of the problems that the Directive 2018/822 of 25 May 2018 amending Directive 2011/16/EU as regards mandatory automatic exchange of information in the field of taxation in relation to reportable cross-border arrangements (DAC 6) and its implementation into the Spanish legal order, raise as regards taxpayers’ rights and fundamental freedoms. By describing the basic content of this reporting obligation, the author emphasizes the vagueness in which that content is defined both in the Directive and in the domestic legislation implementing the Directive, which raises issues as regards the principles of legality, characterization, and legal certainty. Furthermore, the author stressed that the mandatory disclosure regime laid down in the Directive, and in the domestic legislation, shows problems of incompatibility with the EU legal order. The work ends with some general comments on the problem that the Directive raises for taxpayers’ rights from a broader perspective: the one related to the Directive’s legal bases. This perspective helps to understand why, in the author’s opinion, DAC 6 raises also issues concerning fundamental freedoms
Leaflet thrombosis automatic identification in transcatheter aortic valves using 4DCT
No full textLeaflet thrombosis (LT) is a significant complication of transcatheter aortic valve implantation (TAVI) that impacts patient outcomes and transcatheter heart valves (THVs) long-term durability. Subclinical LT (SLT), manifested as hypo-attenuated leaflet thickening (HALT) and potential reduced leaflet motion (RELM), is challenging to diagnose due to its reliance on manual evaluation and observer variability. Although computed tomography (CT) is the preferred imaging modality for LT detection, manual assessment remains labor-intensive and prone to inconsistencies. Additionally, as TAVI procedures are increasingly performed in younger patients, concerns about THVs long-term durability —and particularly regarding LT— are growing. This study aims to develop automated segmentation models using the nnU-Net architecture to detect and characterize thrombi in 4DCT scans of TAVI patients. The methodology includes three main steps: manual annotation of the dataset, thrombus segmentation using eight distinct nnU-Net models, and evaluation based on segmentation metrics and clinical thrombus information. Several models achieved precision values exceeding 0.8 for LT patients, demonstrating the potential of automated segmentation to enhance LT detection. Furthermore, the observed variations in thrombus volume across the cardiac cycle highlight the importance of selecting the optimal phase for LT assessment, suggesting that dynamic evaluation could improve diagnostic accuracy. This work lays the groundwork for early LT detection and the development of predictive biomarkers, offering automated LT detection and characterization that reduces manual effort and observer variability. The proposed dynamic 4DCT analyses could improve LT diagnostics and inform personalized anticoagulation strategies, potentially leading to better long-term outcomes.Axencia Galega de Innovación | Ref. IN607B-2024/07Agencia Estatal de Investigación | Ref. PID2022-138936OB-C32Ministerio para la Transformación Digital y de la Función Pública | Ref. TSI-100121-2024-3
Voice privacy in biometrics: speaker de-identification
No full textSpeech is becoming an important way of interaction with technologies such as intelligent cars, banking, and mobile phones. Some of these applications imply privacy and security issues: in e-health applications, privacy is important for the users; transmitting speech via the Internet can allow undesired users to impersonate us using voice conversion, speech synthesis technologies, etc. This creates the need to remove the identity of the speaker from the speech recordings. De-identification is a process by which a data custodian alters or removes an individual’s identifying information from a dataset, making it harder for users of the data to determine the identity of the data subjects while allowing for data reuse. In the case of speech, it consists of removing the information about an individual’s identity from the speech signal, but preserving other features of interest that are present in the signal such as the message and speaker state. This chapter presents the main research challenges for speaker de-identification. In addition, a comparison of state-of-the-art techniques is performed in a common experimental framework.Agencia Estatal de Investigación | Ref. RTI2018-101372-B-100Xunta de Galicia | Ref. ED431B 2018/60Fondo Europeo de Desarrollo RegionalatlanTTic - research center for Telecommunication Technologie