The challenge of ab initio calculations in small neon clusters

Weakly bound neon dimer, trimer and tetramers are studied at HF and CCSD(T) levels using Dunning, ANO and SIGMA-s basis sets. Their ground-state binding energies are studied along with some structural properties. SIGMA-s basis sets have been developed explicitly for this issue but in a manner that can be readily applied to other atoms for the study of larger weakly bound systems. The difficulties for attaining accurate results on these systems are assessed by the computation of total, atomization and correlation energies, as well as equilibrium distances, with several basis sets of increasing size, ranging from non-augmented to double-augmented versions. Extrapolations are proposed to predict stabilization energies and the results are compared with previously published dat

Free-edge delamination location and growth montoring with an embedded distributed fiber optic network

Delamination is the most characteristic damage found in composite materials. Low velocity impacts may lead to delamination onset, likely to occur during manufacturing processes or in operating service life.Furthermore, areas near the free-edge of the structures,as well as ply drop off and integrated reinforcements have demonstrate a high vulnerability to impacts. This paper focuses on the delamination detection based on an embedded or fixed fiber optic network in a composite laminate. The sensor network uses the Rayleigh scattering through an Optical Backscatter Reflectometer (OBR)that it obtains a continuous strain monitoring on a bare opical fiber. For this purpose, several optical fibers were attached on the structure surface close to the free edge of the specimens in order to identify the first-ply failure and the delamination growth. Experimental results were compared to an ultrasonic C-Scan inspection which present a good agreement with the data of sensor network

Properties of average score distributions of sequest: the probability ratio method

Comunicaciones a congreso

Strain monitoring on a composite aircraft cabin with fiber optic sensors

An integral composite aircraft cabin had been instrumented with two different technologies: distributed fiber optic sensors (DFOSs) and Fiber Bragg Gratings (FBGs). This structural test aims at strain field monitoring in any part of structure when cabin pressurization is applied in order to simulate flight conditions. The Distributed fiber optic network used is based on Rayleigh scatter ing using an Optical Backscatter Reflectometer (OBR). The OBR provides a large number of strain sensor s with high spatial and strain accuracy with a plain optical fiber. DFOSs prove to be the most suitable technology for this test due to their capability to cover large areas with an important amount of strain data. Moreover, the technology of Fiber Bragg Grating sensors has been also applied for the monitoring of the cabin structural integrity. This type of sensors enable a continuous monitoring during the pressurization tests. 24 FBG sensors in four fiber optic circuits were installed on cabin surface . This test allows to correlate distributed and discrete fiber optic sensors and evaluate their damage detection capabilities. Several static pressure tests were conducted in order to detec t structural damage and static loads at the cabin structure

Para avanzar en el conocimiento de la seguridad del paciente: a propósito de la biblioteca breve de seguridad del paciente.

Fundamentos: En el marco de la Estrategia de Seguridad del Paciente 2015-2020 la Consejería de Sanidad de la Comunidad de Madrid desarrolló dos líneas de actuación para consolidar la cultura de seguridad a través de la difusión del conocimiento científico en Seguridad del Paciente. El objetivo principal fue identificar, difundir y mejorar el acceso a la información relevante en seguridad del paciente a pacientes-ciudadanos, profesionales y a la propia organización mediante un catálogo de recursos accesible en internet e intranet. Métodos: Tras un análisis de las herramientas y canales de comunicación disponibles para difundir el conocimiento en seguridad del paciente, se seleccionaron las referencias de interés por un grupo de expertos, se desarrolló una herramienta de consulta en un formato navegable en internet y se realizaron distintas acciones de difusión para darla a conocer. Resultados: Se desarrolló la Biblioteca Breve de Seguridad del Paciente, accesible en la web de la Comunidad de Madrid para navegación y como documento para descargar, con 154 referencias, estructuradas en 4 áreas: Recursos generales (74 referencias), Recursos por Área temática (51 referencias), Videos y multimedia (12 referencias) y Organismos y sitios web de interés (17 referencias). Conclusiones: La Biblioteca Breve de Seguridad del Paciente puede contribuir a impulsar la cultura de seguridad en los centros sanitarios y a lograr mayor implicación de los ciudadanos en su seguridad, al poner a su disposición información fiable sobre esta dimensión transversal de la práctica clínica.post-print589 K

J-PAS: Forecasts for dark matter - dark energy elastic couplings

We consider a cosmological model where dark matter and dark energy feature a coupling that only affects their momentum transfer in the corresponding Euler equations. We perform a fit to cosmological observables and confirm previous findings within these scenarios that favour the presence of a coupling at more than $3\sigma$. This improvement is driven by the Sunyaev-Zeldovich data. We subsequently perform a forecast for future J-PAS data and find that clustering measurements will permit to clearly discern the presence of an interaction within a few percent level with the uncoupled case at more than $10\sigma$ when the complete survey, covering $8500$ sq. deg., is considered. We found that the inclusion of weak lensing measurements will not help to further constrain the coupling parameter. For completeness, we compare to forecasts for DESI and Euclid, which provide similar discriminating power.Comment: 34 pages, 17 figures, added some clarifications and discussions, matches published versio

Sistema de accionamiento de una cadena de arrastre

Sistema de accionamiento de una cadena de arrastre, que comprende: una cadena (8) que incluye eslabones (A, B, C, D) unidos por articulaciones (1, 2, 3, 4, 5); una rueda (6) que incluye medios de engranaje con las articulaciones (1, 2, 3, 4, 5), distribuidos de forma uniforme en la periferia de la rueda (6) y medios de guía aptos para forzar la trayectoria de las articulaciones (1, 2, 3, 4, 5) a lo largo de una curva de tal manera que cuando la rueda (6) gira a velocidad angular constante la cadena (8) avanza con velocidad lineal constante en al menos una de las dos zonas lineales de ida o de vuelta en las que no está engranada con la rueda (6)

Informe Taller Pesquerias Artesanales y Recreativas

En el taller se han realizado más de 20 presentaciones acerca de los estudios sobre las pesquerías artesanales y recreativas en aguas de la ZEE de España. En base a ello y al conocimiento de los expertos reunidos se han definido dos planes de seguimiento para obtener la huella pesquera de las pesquerías profesionales sin VMS, uno con sistemas de seguimientos de localización en tres fases y otro con observadores a bordo y encuestas en puntos de primera venta en dos fases. En el caso de las actividades pesqueras no profesionales (recreativas) se ha propuesto un plan de seguimiento basado en encuestas telefónicas y presenciales en tres fases. Además se decidió incluir las actividades pelágicas y/o de superficie dentro de los programas de seguimiento

Comprensión conceptual de estadística y métodos de decisión utilizando herramientas de gamificación para la adquisición de competencias en los grados de ciencias económicas y empresariales

El objetivo general del proyecto es mejorar la motivación y la actitud de los alumnos de los grados de ciencias sociales hacia las materias cuantitativas, así como su participación activa en el proceso de enseñanza-aprendizaje, individual y en grupo, con la finalidad última de incrementar su nivel de competencias y rendimiento

Incidence, Clinical Characteristics and Management of Inflammatory Bowel Disease in Spain : Large-Scale Epidemiological Study

(1) Aims: To assess the incidence of inflammatory bowel disease (IBD) in Spain, to describe the main epidemiological and clinical characteristics at diagnosis and the evolution of the disease, and to explore the use of drug treatments. (2) Methods: Prospective, population-based nationwide registry. Adult patients diagnosed with IBD-Crohn's disease (CD), ulcerative colitis (UC) or IBD unclassified (IBD-U)-during 2017 in Spain were included and were followed-up for 1 year. (3) Results: We identified 3611 incident cases of IBD diagnosed during 2017 in 108 hospitals covering over 22 million inhabitants. The overall incidence (cases/100,000 person-years) was 16 for IBD, 7.5 for CD, 8 for UC, and 0.5 for IBD-U; 53% of patients were male and median age was 43 years (interquartile range = 31-56 years). During a median 12-month follow-up, 34% of patients were treated with systemic steroids, 25% with immunomodulators, 15% with biologics and 5.6% underwent surgery. The percentage of patients under these treatments was significantly higher in CD than UC and IBD-U. Use of systemic steroids and biologics was significantly higher in hospitals with high resources. In total, 28% of patients were hospitalized (35% CD and 22% UC patients, p < 0.01). (4) Conclusion: The incidence of IBD in Spain is rather high and similar to that reported in Northern Europe. IBD patients require substantial therapeutic resources, which are greater in CD and in hospitals with high resources, and much higher than previously reported. One third of patients are hospitalized in the first year after diagnosis and a relevant proportion undergo surgery