An out-of-core method for GPU image mapping on large 3D scenarios of the real world

[Abstract] Image mapping on 3D huge scenarios of the real world is one of the most fundamental and computational expensive processes for the integration of multi-source sensing data. Recent studies focused on the observation and characterization of Earth have been enhanced by the proliferation of Unmanned Aerial Vehicle (UAV) and sensors able to capture massive datasets with a high spatial resolution. Despite the advances in manufacturing new cameras and versatile platforms, only a few methods have been developed to characterize the study area by fusing heterogeneous data such as thermal, multispectral or hyperspectral images with high-resolution 3D models. The main reason for this lack of solutions is the challenge to integrate multi-scale datasets and high computational efforts required for image mapping on dense and complex geometric models. In this paper, we propose an efficient pipeline for multi-source image mapping on huge 3D scenarios. Our GPU-based solution significantly reduces the run time and allows us to generate enriched 3D models on-site. The proposed method is out-of-core and it uses available resources of the GPU’s machine to perform two main tasks: (i) image mapping and (ii) occlusion testing. We deploy highly-optimized GPU-kernels for image mapping and detection of self-hidden geometry in the 3D model, as well as a GPU-based parallelization to manage the 3D model considering several spatial partitions according to the GPU capabilities. Our method has been tested on 3D scenarios with different point cloud densities (66M, 271M, 542M) and two sets of multispectral images collected by two drone flights. We focus on launching the proposed method on three platforms: (i) System on a Chip (SoC), (ii) a user-grade laptop and (iii) a PC. The results demonstrate the method’s capabilities in terms of performance and versatility to be computed by commodity hardware. Thus, taking advantage of GPUs, this method opens the door for embedded and edge computing devices for 3D image mapping on large-scale scenarios in near real-time.This work has been partially supported through the research projects TIN2017-84968-R, PID2019-104184RB-I00 funded by MCIN/AEI/10.13039/501100011033 and ERDF funds “A way of doing Europe”, as well as by ED431C 2021/30, ED431F 2021/11 funded by Xunta de Galicia and 1381202 by Junta de AndalucíaXunta de Galicia; ED431C 2021/30Xunta de Galicia; ED431F 2021/11Junta de Andalucía; 138120

Acanthamoeba castellanii: a new high-throughput method for drug screening in vitro

Despite significant public health impact, there is no specific antiprotozoal therapy for prevention and treatment of Acanthamoeba castellanii infection. There is a need for new and efficient anti-Acanthamoeba drugs that are less toxic and can reduce treatment duration and frequency of administration. In this context a new, rapid and sensitive assay is required for high-throughput activity testing and screening of new therapeutic compounds. A colorimetric assay based on sulforhodamine B (SRB) staining has been developed for anti-Acanthamoeba drug susceptibility testing and adapted to a 96-well microtiter plate format. Under these conditions chlorhexidine was tested to validate the assay using two clinical strains of A. castellanii (Neff strain, T4 genotype [IC50 4.68±0.6 _M] and T3 genotype [IC50 5.69±0.9 _M]). These results were in good agreement with those obtained by the conventional Alamar Blue assay, OCR cytotoxicity assay and manual cell counting method. Our new assay offers an inexpensive and reliable method, which complements current assays by enhancing high-throughput anti-Acanthamoeba drug screening capabilities

Reduction of a symplectic-like Lie algebroid with momentum map and its application to fiberwise linear Poisson structures

This article addresses the problem of developing an extension of the Marsden- Weinstein reduction process to symplectic Lie algebroids, and in particular to the case of the symplectic cover of a fiberwise linear Poisson structure, whose reduction process is the analogue to cotangent bundle reduction in the context of Lie algebroids.Comment: 36 page

Caracterización del crecimiento de bovinos cebú en pruebas de comportamiento en pastoreo/Characterization of growth of Cebu cattle in testing performance on grazing

El objetivo fue caracterizar el crecimiento de bovinos Cebú en pruebas de comportamiento en pastoreo. Se utilizaron 15 990 datos de peso vivo, tomados entre 150 y 630 d de edad, de 3 198 machos con cinco pesadas cada uno: 1) peso al destete (PD), 2) peso inicio de prueba (PI), 3) primera pesada (P1), 4) segunda pesada (P2) y 5) peso nal de prueba (PF). Se contrastaron los modelos no lineales (MNL): Brody (BRO), Logístico (LOG), von Bertalany (BER) y Gompertz (GOM); en dos tipos de análisis (ANA1, ANA2) con NLMIXED de SAS. ANA1, con MNL mixtos (MNLM), al incluir el efecto aleatorio de un coeciente de regresión; y ANA2 con MNL, sin efectos aleatorios asociados a coecientes de regresión. La selección del modelo se realizó con los criterios error de predicción promedio; varianza del error de predicción; estadístico Durbin Watson; coeciente de determinación; criterio de información Akaike y criterio Bayesiano. Los pesos promedio (kg) ajustados al PD, PI, P1, P2 y PF fueron 175.9 ± 33.4, 182.5 ± 32.1, 225.8 ± 49.6, 266.8 ± 61.9 y 340.3 ± 68.1, respectivamente. Los análisis con MNLM (ANA1) presentaron mejores resultados, siendo el LOG el que presentó mejor ajuste, seguido de GOM, BER y BRO. Los resultados del ANA2 fueron sobre estimados y fuera de contexto para asociarse al crecimiento de bovinos; las curvas de crecimiento generadas con MNLM presentaron buena capacidad predictiva y estuvieron en función del proceso generador de los datos, que se reere al crecimiento del ganado Cebú

Prevalence and features of ICF-disability in Spain as captured by the 2008 National Disability Survey

<p>Abstract</p> <p>Background</p> <p>Since 1986, the study of disability in Spain has been mainly addressed by National Disability Surveys (NDSs). While international attempts to frame NDS designs within the International Classification of Functioning, Disability and Health (ICF) have progressed, in general, the ICF has hardly been used in either the NDS or epidemiological studies. This study sought to identify ICF Activity- and Participation-related content in the most recent Spanish NDS, the 2008 Survey on Disabilities, Independence and Dependency Situations (<it>Encuesta sobre discapacidades, autonomía personal y situaciones de Dependencia </it>- <it>EDAD 2008</it>), and estimate the prevalence of such ICF-framed disability.</p> <p>Methods</p> <p><it>EDAD 2008 </it>methods and questions were perused. Of the 51 EDAD items analysed, 29 were backcoded to specific d2-d7 domains of the ICF Checklist and, by rating the recorded difficulty to perform specific tasks with or without help, these were then taken as performance and capacity respectively. A global ICF score was also derived, albeit lacking data for d1, "Learning and applying knowledge", d8, "Major Life Areas" and d9, "Community, Social and Civic Life". Data were grouped by sex, age, residence and initial positive screening, and prevalence figures were calculated by disability level both for the general population, using the originally designed weights, and for the population that had screened positive to disability. Data for institutionalised persons were processed separately.</p> <p>Results</p> <p>Crude prevalence of ICF severe/complete and moderate disability among the community-dwelling population aged ≥6 years was 0.9%-2.2% respectively, and that of severe/complete disability among persons living in sheltered accommodation was 0.3%.</p> <p>Prevalence of severe/complete disability was: higher in women than in men, 0.8% vs. 0.4%; increased with age; and was particularly high in domains such as "Domestic Life", 3.4%, "Mobility", 1.8%, and "Self-care", 1.9%, in which prevalence decreased when measured by reference to performance. Moreover, global scores indicated that severe/complete disability in these same domains was frequent among the moderately disabled group.</p> <p>Conclusions</p> <p>The <it>EDAD 2008 </it>affords an insufficient data set to be ICF-framed when it comes to the Activity and Participation domains. Notwithstanding their unknown validity, ratings for available ICF domains may, however, be suitable for consideration under the ADL model of functional dependency, suggesting that there are approximately 500,000 persons suffering from severe/complete disability and 1,000,000 suffering from moderate disability, with half the latter being severely disabled in domains capable of benefiting from technical or personal aid. Application of EDAD data to the planning of services for regions and other subpopulations means that need for personal help must be assessed, unmet needs ascertained, and knowledge of social participation and support, particularly for the mentally ill, improved. International, WHO-supported co-operation in ICF planning and use of NDSs in Spain and other countries is needed.</p

Sevilla y la carrera de Indias: las compraventas de naos (1560-1622)

The shipping business remains one of the less known aspects of the Indies run. This article attempts to answer the question of how acquired in Seville the boats that make the transatlantic route. To this end, exhaustively describe the terms of some notarial contracts and purchases of ships between 1560 and 1622.El negocio naviero sigue siendo uno de los aspectos menos conocidos de la carrera de Indias. En este artículo se intenta responder a la pregunta de cómo se adquieren en Sevilla los barcos que hacen la ruta trasatlántica. Para ello, se describen exhaustivamente las cláusulas de algunos contratos notariales de compraventas de naos comprendidos entre 1560 y 1622

La conectividad: Dogmatismo o nuevo referente paradigmático para el docente de vanguardia

To nine years of initiated the so called new millennium of christens age, it was witnessed and actor of the continuity of learning processes developed in instructional environments based on well-known paradigmatic approaches; Conductism, Cognitivism and Constructivism. It is evident, in the Venezuelan subsystem of top education and specifically in the debate of the complex epistemology, the rooting to the fragmentation of the knowledge and action, the judgment, probably few sharpen of who defend the thesis of the knowledge society and the technology as mechanisms of universal systematically communication from support to new modalities of learning and of information diffusion and scientific advance. It is an intention of the authors of this article, to generate some reflections on the epistemology of the connectivity in learning environments. Critical considerations of the authors, the analysis and evaluation of classical theories of learning against connectivism theory, reflect the documentary character of the article.A nueve años del llamado nuevo milenio de la era cristiana, se fue testigo y actor de la continuidad de procesos de aprendizaje desarrollados en ambientes instruccionales basados en conocidos enfoques paradigmáticos: Conductismo, Cognitivismo y Constructivismo. Es evidente, en el subsistema de educación superior venezolano y específicamente en el debate de la epistemología compleja, el arraigo a la fragmentación de los saberes y haceres, el juicio, quizás poco acertivo de quienes defienden la tesis de la sociedad del conocimiento y la tecnología como mecanismos de comunicación sistemático universal de apoyo a nuevas modalidades de aprendizaje y de difusión de información y avance científico. Es propósito es generar algunas reflexiones sobre la epistemología de la conectividad en los ambientes de aprendizaje. Las consideraciones críticas de los autores, el análisis y evaluación de las teorías clásicas de aprendizaje frente a la teoría conectivista, reflejan el carácter documental del artícul

Tamadaba : revista digital de los CEP de Gran Canaria y Fuerteventura

Se presenta un proyecto que comienza como una pequeña idea entre una maestra de infantil y una tutora de un aula Enclave del CEIP Barrio Costa. Se plantean una serie de tareas relacionadas con la experiencia de un cuento sobre la carrera de Maratón de Sables (carrera por etapas de autosuficiencia alimentaria realizada en Marruecos). Con estas tareas se favorece la inclusión del alumnado, el deporte, la actividad física, la empatía y el compañerismo.ES

Producción de carne en pastoreo y suplementación en el sur de Tamaulipas. I utilización del forraje henificado de la misma . Pradera mas melaza urea

EI estudio se realizó en el Campo Experimental de Aldama, Tamaulipas, México, con clima cálido seco BS1. EI objetivo fue evaluar el potencial de producción de carne de los zacates Transvala (Digitaria decumbens), Angleton (Dichanthium aristatum) y Santo