Time Series Heterogeneous Co-execution on CPU+GPU

Time series motif (similarities) and discords discovery is one of the most important and challenging problems nowadays for time series analytics. We use an algorithm called “scrimp” that excels in collecting the relevant information of time series by reducing the computational complexity of the searching. Starting from the sequential algorithm we develop parallel alternatives based on a variety of scheduling policies that target different computing devices in a system that integrates a CPU multicore and an embedded GPU. These policies are named Dynamic -using Intel TBB- and Static -using C++11 threads- when targeting the CPU, and they are compared to a heterogeneous adaptive approach named LogFit -using Intel TBB and OpenCL- when targeting the co-execution on the CPU and GPU.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

A PCR-based method for discriminating between high molecular weight glutenin subunits Bx7 and Bx7* in Triticum aestivum L

The correct assignment of high molecular weight glutenin subunit variants is a key task in wheat breeding. However, the traditional analysis by protein electrophoresis is sometimes difficult and not very precise. This work describes a novel DNA marker for the accurate discrimination between the Glu-B1 locus subunits Bx7 and Bx7*. The analysis of one hundred and forty two bread wheat cultivars from different countries has highlighted a great number of misclassifications in the literature that could lead to wrong conclusions in studies of the relationship between glutenin composition and wheat quality

Desarrollo de nuevos marcadores de DNA para la identificación de gluteninas de alto peso molecular (HMW) en trigo

Las subunidades de gluteninas de alto peso molecular (HMW-GS) son las principales responsables de la calidad pandera del trigo (T. aestivum ssp vulgare L.). Su estudio se realiza por métodos electroforéticos en geles SDS-PAGE, habiéndose identificado así una gran cantidad de alelos distintos con diferente influencia en la calidad. Sin embargo, la correcta asignación de alelos puede ser a veces complicada usando sólo este método, por ello se están desarrollando marcadores basados en la secuencia de ADN que complementen el análisis electroforético y ayuden a la correcta discriminación alélica. En este trabajo se han desarrollado marcadores nuevos para diferenciar inequívocamente las subunidades 2¨ vs 2* del locus Glu-A1, y, la 7 vs 7* y la 7 vs 13 del locus Glu-B1

Explotando el nuevo módulo OpenCL de Intel TBB

Este artículo tiene como objetivo contribuir al desarrollo de la programación paralela trabajando en una de las herramientas desarrolladas por Intel: Intel Threading Building Blocks (Intel TBB). Hemos implementado una versión paralela de la aplicación ViVid, un algoritmo de detección de objetos, aprovechando la librería Flow Graph de TBB. En la última versión de esta librería se soporta un nuevo tipo de nodos que simplifica la ejecución de kernels OpenCL. Estos nodos OpenCL_node han simplificado la codificación de nuestro algoritmo para aprovechar al mismo tiempo tanto la CPU como la GPU. A la vista de los resultados obtenidos, podemos concluir que nuestra implementación heterogénea con Flow Graph y OpenCL_node mejora en gran medida a desarrollos anteriores, debido principalmente a explotar la técnica de zero-copy buffer entre GPU y CPU, en vez de lectura y escritura de buffers.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. Proyecto TIN2016-80920-R del Ministerio de Economía, Industria y Competitivida

CRISP Spectropolarimetric Imaging of Penumbral Fine Structure

We discuss penumbral fine structure in a small part of a pore, observed with the CRISP imaging spectropolarimeter at the Swedish 1-m Solar Telescope (SST), close to its diffraction limit of 0.16 arcsec. Milne-Eddington inversions applied to these Stokes data reveal large variations of field strength and inclination angle over dark-cored penumbral intrusions and a dark-cored light bridge. The mid-outer part of this penumbra structure shows 0.3 arcsec wide spines, separated by 1.6 arcsec (1200 km) and associated with 30 deg inclination variations. Between these spines, there are no small-scale magnetic structures that easily can be be identified with individual flux tubes. A structure with nearly 10 deg more vertical and weaker magnetic field is seen midways between two spines. This structure is co-spatial with the brightest penumbral filament, possibly indicating the location of a convective upflow from below.Comment: Accepted for publication in ApJL 17 Oct 2008. One Figure adde

The role of heart rate on the associations between body composition and heart rate variability in children with overweight/obesity : the ActiveBrains project

Background: Heart rate variability (HRV) is negatively associated with body mass index and adiposity in several populations. However, less information is available about this association in children with overweight and obesity, especially severe/morbid obesity, taking into consideration the dependence of HRV on heart rate (HR). Objectives: (1) to examine associations between body composition measures and HRV, (2) to study differences in HRV between children with overweight and severe/morbid obesity; and (3) to test whether relationships and differences tested in objectives 1 and 2, respectively are explained by the dependency of HRV on HR. Methods: A total of 107 children with overweight/obesity (58% boys, 10.03 +/- 1.13 years) participated in this study. Body composition measures were evaluated by Dual-energy X-ray absorptiometry (DXA). HRV parameters were measured with Polar RS800CXR (R). Results: Body composition measures were negatively associated with HRV indicators of parasympathetic activity (beta values ranging from -0.207 to -0.307, all p 0.05). Conclusion: All associations between adiposity/obesity and HRV could be explained by HR, suggesting a key confounding role of HR in HRV studies in children with weight disturbances

Antiviral compounds obtained from microalgae commonly used as carotenoid sources

The final publication is available at Springer via http://dx.doi.org/10.1007/s10811-011-9692-1Pressurized liquid extraction (PLE), an environmentally friendly technique, has been used to obtain antiviral compounds from microalgae commonly used as carotenoids sources: Haematococcus pluvialis and Dunaliella salina. The antiviral properties of PLE extracts (hexane, ethanol and water) were evaluated against herpes simplex virus type 1 (HSV-1) at different stages during viral infection. Pre-treatment of Vero cells with 75 µg mL-1 of H. pluvialis ethanol extract inhibited virus infection by approx. 85%, whereas the same concentration of water and hexane extracts reduced the virus infectivity 75% and 50% respectively. D. salina extracts were less effective than H. pluvialis extracts and presented a different behaviour, since water and ethanol extracts produced a similar virus inhibition (65%). Moreover, H. pluvialis ethanol extract was also the most effective against HSV-1 intracellular replication. The antiviral activity of water PLE extracts was found to correlate with polysaccharides, since the polysaccharide-rich fraction isolated from these extracts showed higher antiviral activity than the original water extracts. A GC-MS characterization of the H. pluvialis ethanol extract showed the antiviral activity of this extract could be partially related with the presence of short chain fatty acids, although other compounds could be involved in this activity; meanwhile, in the case of D. salina ethanol extract other compounds seemed to be implied, such as: β-ionone, neophytadiene, phytol, palmitic acid and α-linolenic acid. Results demonstrated the use of PLE allows obtaining antiviral compounds from microalgae used as carotenoids sources, which gives both microalgae biomass an added value.This work has been financed by the Spanish Ministry of Education and Science (AGL2005-06726-C04), the programme CONSOLIDER-INGENIO 2010 (CDS2007-00063) and the regional programme ALIBIRD-CM S-0505/AGR-0153 from the Comunidad de Madrid, Spain