Complex noise in diffusion-limited reactions of replicating and competing species

We derive exact Langevin-type equations governing quasispecies dynamics. The inherent multiplicative noise has both real and imaginary parts. The numerical simulation of the underlying complex stochastic partial differential equations is carried out employing the Cholesky decomposition for the noise covariance matrix. This noise produces unavoidable spatio-temporal density fluctuations about the mean field value. In two dimensions, the fluctuations are suppressed only when the diffusion time scale is much smaller than the amplification time scale for the master species.Comment: 10 pages, 2 composite figure

Ground Extraction from 3D Lidar Point Clouds

© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works Pomares, A., Martínez, J.L., Mandow, A., Martínez, M.A., Morán, M., Morales, J. Ground extraction from 3D lidar point clouds with the Classification Learner App (2018) 26th Mediterranean Conference on Control and Automation, Zadar, Croatia, June 2018, pp.400-405. DOI: PendingGround extraction from three-dimensional (3D) range data is a relevant problem for outdoor navigation of unmanned ground vehicles. Even if this problem has received attention with specific heuristics and segmentation approaches, identification of ground and non-ground points can benefit from state-of-the-art classification methods, such as those included in the Matlab Classification Learner App. This paper proposes a comparative study of the machine learning methods included in this tool in terms of training times as well as in their predictive performance. With this purpose, we have combined three suitable features for ground detection, which has been applied to an urban dataset with several labeled 3D point clouds. Most of the analyzed techniques achieve good classification results, but only a few offer low training and prediction times.This work was partially supported by the Spanish project DPI 2015- 65186-R. The publication has received support from Universidad de Málaga, Campus de Excelencia Andalucía Tech

Model for the analysis of the structural failure of the clay core in rockfill dams due to overtopping, A

Presented at the Protections 2016: 2nd international seminar on dam protection against overtopping: concrete dams, embankment dams, levees, tailings dams held on 7th-9th September, 2016, at Colorado State University in Fort Collins, Colorado, USA. The increasing demand for dam and levee safety and flood protection has motivated new research and advancements and a greater need for cost-effective measures in overtopping protection as a solution for overtopping concerns at levees and dams. This seminar will bring together leading experts from practice, research, development, and implementation for two days of knowledge exchange followed by a technical tour of the Colorado State University Hydraulic Laboratory with overtopping flume and wave simulator. This seminar will focus on: Critical issues related to levees and dams; New developments and advanced tools; Overtopping protection systems; System design and performance; Applications and innovative solutions; Case histories of overtopping events; Physical modeling techniques and recent studies; and Numerical modeling methods.Includes bibliographical references.In 2014 the Dam Safety Research Group (SERPA) of the Technical University of Madrid performed several tests to assess the behavior of rockfill dams in overtopping scenarios. A structural failure pattern of the clay core was observed, as expected. Hence, it was concluded that a model to simulate the observed failure mechanisms was needed. The model described herein provides the first results on assessment of the clay core stability following failure of the downstream shell. The failure process may result in one or more brittle and abrupt breakage phases of the core, herein classified as structural breakages, as opposed to the progressive failure caused by the erosion of the cohesive material. Thus, total or partial failure of the clay core occurs when the acting forces reach one of the instability conditions: overturning or sliding. The model was utilized to retroactively analyze two experiments carried out in the laboratory; the results obtained were consistent with the experimental measurements. The model is based on simple mechanical principles, but represents a paradigm shift in the interpretation and evaluation of the overtopping failure processes, especially since it results in a failure hydrograph different from those typically adopted, and therefore, has repercussions in the development of emergency plans

Relaciones interpersonales en niños y jóvenes con trastornos del espectro del autismo y discapacidad intelectual

Las personas con discapacidad severa y profunda han sido un colectivo poco estudiado en el ámbito de la investigación y, menos aún, en las etapas de la infancia y adolescencia. Este estudio evalúa las relaciones interpersonales de una muestra de 55 personas con Trastorno del Espectro Autismo (TEA) y discapacidad intelectual (DI) entre 4 y 20 años. Para ello se utilizó la subescala de relaciones interpersonales de la Escala KidsLife (Gómez et al., en prensa) que evalúa calidad de vida. Las puntuaciones más altas se obtuvieron en los ítems relacionados con la comunicación, mientras que las más bajas se observaron en los ítems relacionados con las interacciones sociales. Además, las personas con DI profunda obtuvieron puntuaciones significativamente más bajas que aquellos con mayores niveles de funcionamiento. Se discute acerca de las implicaciones del estudio y se realizan recomendaciones específicas para mejorar las prácticas profesionales y organizacionales dirigidas a la mejora de la calidad de vida

Presepsin: a new marker of catheter related blood stream infections in pediatric patients

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.Revisión por pare

Origem e diversidade clonal do lagarto partenogenético Aspidoscelis rodecki (Squamata: Teiidae): evidências cromossômicas.

Com a finalidade de investigar a origem e a diversidadecromossômica de Aspidoscelis rodecki, analisamos os cariótipos de indivíduos de duas populações diferentes desse lagarto unissexual. O cariótipo de A. rodecki possui um número diplóide de 50 cromossomos e exibe um heteromorfismo estrutural marcante. O arranjo cromossômico parece ter sido originado pela fissão de Todd após o surgimento da partenogênese (hibridização entre A. angusticeps e A. deppii). Esse padrão foi observado em duas populações da espécie, que é endêmica da Península de Yucatán.We analyzed the karyotypes of individuals of two different populations of Aspidoscelis rodecki to investigate the origin andchromosomal diversity of this unisexual lizard. The karyotype of A. rodecki has a diploid number of 50 chromosomes, and exhibits a marked structural heteromorphism. The unique arrangement seems to have originated by Todd´s fission after the origin of parthenogenesis (hybridization between A. angusticeps and A. deppii). This pattern was observed in two populations of the species, which is endemic to the Yucatan Peninsula.Con el fin de conocer el origen y la diversidad cromosómica deAspidoscelis rodecki, analizamos el cariotipo de individuos de dos poblaciones de esta lagartija unisexual. El cariotipo de A. rodecki presenta un número diploide de 50 cromosomas y muestra unmarcado heteromorfismo estructural. El arreglo cromosómico parece haberse originado a través de fisiones de Todd, posteriores al origen de la partenogénesis (hibridación entre A. angusticeps y A. deppii). Este patrón fue observado en dos poblaciones de la especie, que es endémica de la Península de Yucatán

Evaluación del cambio conceptual mediante una entrevista "en profundidad"

En este artículo se analizan algunas concepciones espontáneas que los estudiantes puedan mostrar sobre al aplicar el Principio de Acción y Reacción a diversas situaciones físicas, tratando de complementar métodos cuantitativos y cualitativos. En relación a estos últimos, se presenta el estudio de un caso mediante una "entrevista en profundidad", que fue aplicada a 18 estudiantes con edades comprendidas entra 12 y 18 años, con objeto de analizar su pensamiento implícito a lo largo del proceso de cambio conceptual

Health care for people with intellectual disability in Spain

We describe the healthcare system for people with intellectual disability (ID) in Spain. First, we provide general population statistics before focusing on the most recent prevalence data related to people with disability in general, and with ID in particular. We also discuss how health care is organized. Most of the Spanish population is covered by the public healthcare system, which is structured into primary care (first-level health services; easily accessible and capable of tackling the most common ailments) and specialized care (second-level health services; comprising the most complex and costly diagnostic and therapeutic resources). We then explain Spain's primary legislation that promotes the rights of people with disabilities, highlighting the importance of the United Nations Convention on the Rights of Persons with Disabilities (CRPD), which is enshrined in the Spanish General Law on the Rights of People with Disabilities and their Social Inclusion (Royal Legislative Decree 1/2013). Second, we describe the organization of Spanish disability support and health services, whose regulation is highly complex given that the autonomous regions set their own rules about coverage, services, and financing. Third, we present some recent studies that allow a better understanding of health care for people with ID in Spain, including a summary of the ongoing #Rights4MeToo project. We report specific data on the right to habilitation/rehabilitation. People with ID and professionals providing them with supports agreed that the most problematic aspects of health care for people with ID were the lack of: coordination across services, user-friendly information to maintain or improve their health, psychological treatments, preventive medical check-ups, and knowledge about disability among health professionals. There is a need to give people with ID priority access to services, reduce waiting times, increase the length of medical appointments, and create protocols and prevention campaigns targeting them