Parallel waveform extraction algorithms for the Cherenkov Telescope Array Real-Time Analysis

The Cherenkov Telescope Array (CTA) is the next generation observatory for the study of very high-energy gamma rays from about 20 GeV up to 300 TeV. Thanks to the large effective area and field of view, the CTA observatory will be characterized by an unprecedented sensitivity to transient flaring gamma-ray phenomena compared to both current ground (e.g. MAGIC, VERITAS, H.E.S.S.) and space (e.g. Fermi) gamma-ray telescopes. In order to trigger the astrophysics community for follow-up observations, or being able to quickly respond to external science alerts, a fast analysis pipeline is crucial. This will be accomplished by means of a Real-Time Analysis (RTA) pipeline, a fast and automated science alert trigger system, becoming a key system of the CTA observatory. Among the CTA design key requirements to the RTA system, the most challenging is the generation of alerts within 30 seconds from the last acquired event, while obtaining a flux sensitivity not worse than the one of the final analysis by more than a factor of 3. A dedicated software and hardware architecture for the RTA pipeline must be designed and tested. We present comparison of OpenCL solutions using different kind of devices like CPUs, Graphical Processing Unit (GPU) and Field Programmable Array (FPGA) cards for the Real-Time data reduction of the Cherenkov Telescope Array (CTA) triggered data.Comment: In Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands. All CTA contributions at arXiv:1508.0589

Recent progress on color confinement

The status is reviewed of the dual superconductivity of QCD vacuum as a mechanism of color confinement.Comment: 8 pages. Invited talk at the conference QCD@Work 2007, Martina Franca (Italy) June 16-20 200

A comparison of CMB Angular Power Spectrum Estimators at Large Scales: the TT case

In the context of cosmic microwave background (CMB) data analysis, we compare the efficiency at large scale of two angular power spectrum algorithms, implementing, respectively, the quadratic maximum likelihood (QML) estimator and the pseudo spectrum (pseudo-Cl) estimator. By exploiting 1000 realistic Monte Carlo (MC) simulations, we find that the QML approach is markedly superior in the range l=[2-100]. At the largest angular scales, e.g. l < 10, the variance of the QML is almost 1/3 (1/2) that of the pseudo-Cl, when we consider the WMAP kq85 (kq85 enlarged by 8 degrees) mask, making the pseudo spectrum estimator a very poor option. Even at multipoles l=[20-60], where pseudo-Cl methods are traditionally used to feed the CMB likelihood algorithms, we find an efficiency loss of about 20%, when we considered the WMAP kq85 mask, and of about 15% for the kq85 mask enlarged by 8 degrees. This should be taken into account when claiming accurate results based on pseudo-Cl methods. Some examples concerning typical large scale estimators are provided.Comment: 9 pages, 7 figures. Accepted for publication in MNRA

ALS mutant FUS proteins are recruited into stress granules in induced pluripotent stem cells- derived motoneurons

Patient-derived induced Pluripotent Stem Cells (iPSCs) provide an opportunity to study human diseases mainly in those cases where no suitable model systems are available. Here we have taken advantage of in vitro iPSCs derived from patients affected by Amyotrophic Lateral Sclerosis and carrying mutations in the RNA-binding proteins FUS to study the cellular behavior of the mutant proteins in the appropriate genetic background. Moreover, the ability to differentiate iPSCs into spinal cord neural cells provides an in vitro model mimicking the physiological conditions. iPSCs were derived from FUS(R514S) and FUS(R521C) patients' fibroblasts, while in the case of the severe FUS(P525L) mutation, where fibroblasts were not available, a heterozygous and a homozygous iPSC lines were raised by TALEN-directed mutagenesis. We show that aberrant localization and recruitment of FUS into stress granules (SGs) is a prerogative of the FUS mutant proteins and occurs only upon induction of stress in both undifferentiated iPSCs and spinal cord neural cells. Moreover, we show that the incorporation into SGs is proportional to the amount of cytoplasmic FUS, nicely correlating with the cytoplasmic delocalization phenotype of the different mutants. Therefore, the available iPSCs represent a very powerful system for understanding the correlation between FUS mutations, the molecular mechanisms of SG formation and ALS ethiopathogenesis

Nitrogen thermal cycles of 4K RL samples procedure

This document contains the procedures for the thermal shock tests of the QM-like 4 K Reference Load targets bonded on Aluminum without envelo

Nitrogen thermal cycles of 4K RL samples report

The purpose of this document is to report results of the thermal shock tests in a controlled environment for the sample

EROSIVIDADE DA CHUVA: DISTRIBUIÇÃO E CORRELAÇÃO COM A PRECIPITAÇÃO EM ÓBIDOS-PA (BRASIL) / RAINFALL EROSIVITY: DISTRUBUITION AND CORRELATION WITH PRECIPITATION IN ÓBIDOS-PA (BRAZIL)

Este trabalho buscou determinar o valor do índice erosividade da chuva para Óbidos/PA, além de avaliar o seu período de retorno e probabilidade de ocorrência, analisar a distribuição anual deste índice e correlacioná-lo com a precipitação local. Para isto, utilizaram-se dados de precipitação, de 1986 a 2015, de uma estação meteorológica do INMET localizada no município. A partir destes, calculou-se o índice de erosividade para todos os anos de análise, gerando um índice final. Calculou-se a frequência dos valores dos índices e os períodos de retorno correspondentes, que foram plotados em curvas de probabilidade de ocorrência para análise. Realizaram-se análises de regressão para analisar a relação entre a erosividade e a precipitação. No período de análise, a erosividade da chuva para Óbidos foi 13.361 MJ mm ha-1 h-1 ano-1, com probabilidade de 52% de ser equiparado ou excedido pelo menos uma vez a cada 2 anos. Este valor do índice de erosividade classificou a região em área de Muito Alta Erosividade. Nos meses de fevereiro, março e abril são esperados os maiores riscos de erosão, com 60,88% do valor total da erosividade anual. Na análise de regressão, o modelo matemático que apresentou melhor correlação foi o linear (r² = 0,9991).

Cinema experimental e informação: desafios para o entendimento

O cinema experimental traça um movimento inaugural de campos e formas, e, por seu estatuto desbravador e de choque, constitui um dado importante sua condição de confronto com as normas e os protocolos, com as convenções e as instituições, e, enfim, com o repertório do espectador. A partir de métodos extraídos da metahistória de Hollis Frampton, da nova história do cinema das origens, do cinema de reapropriação de arquivo -- found footage -- e das fontes e ciência da informação, este artigo busca abordar o cinema experimental e seus desafios de comunicação.

Effect of the Carbon Concentration, Blend Concentration, and Renewal Rate in the Growth Kinetic of Chlorella

The microalgae cultivation can be used as alternative sources of food, in agriculture, residual water treatment, and biofuels production. Semicontinuous cultivation is little studied but is more cost-effective than the discontinuous (batch) cultivation. In the semicontinuous cultivation, the microalga is maintained in better concentration of nutrients and the photoinhibition by excessive cell is reduced. Thus, biomass productivity and biocompounds of interest, such as lipid productivity, may be higher than in batch cultivation. The objective of this study was to examine the influence of blend concentration, medium renewal rate, and concentration of sodium bicarbonate on the growth of Chlorella sp. during semicontinuous cultivation. The cultivation was carried out in Raceway type bioreactors of 6 L, for 40 d at 30°C, 41.6 µmol m−2 s−1, and a 12 h light/dark photoperiod. Maximum specific growth rate (0.149 d−1) and generating biomass (2.89 g L−1) were obtained when the blend concentration was 0.80 g L−1, the medium renewal rate was 40%, and NaHCO3 was 1.60 g L−1. The average productivity (0.091 g L−1 d−1) was achieved with 0.8 g L−1 of blend concentration and NaHCO3 concentration of 1.6 g L−1, independent of the medium renewal rate