The ATLAS experiment has produced hundreds of petabytes of data and expects to have one order of magnitude more in the future. This data are spread among hundreds of computing Grid sites around the ...world. The EventIndex is the complete catalogue of all ATLAS events, real and simulated, keeping the references to all permanent files that contain a given event in any processing stage. It provides the means to select and access event data in the ATLAS distributed storage system, and provides support for completeness and consistency checks and trigger and offline selection overlap studies. The EventIndex employs various data handling technologies like Hadoop and Oracle databases, and it is integrated with other parts of the ATLAS distributed computing infrastructure, including systems for data, metadata, and production management. The project has been in operation since the start of LHC Run 2 in 2015, and it is in permanent development in order to satisfy the production and analysis demands and follow technology evolution. The main data store in Hadoop, based on MapFiles and HBase, has worked well during Run 2 but new solutions are being explored for the future. This paper reports on the current system performance and on the studies of a new data storage prototype that can carry the EventIndex through Run 3.
The computing model of the ATLAS experiment at the LHC (Large Hadron Collider) is based on a tiered hierarchy that ranges from Tier0 (CERN) down to end-user's own resources (Tier3). According to the ...same computing model, the role of the Tier2s is to provide computing resources for event simulation processing and distributed data analysis. Tier3 centers, on the other hand, are the responsibility of individual institutions to define, fund, deploy and support. In this contribution we report on the operations of the ATLAS Iberian Cloud centers facing data taking and we describe some of the Tier3 facilities currently deployed at the Cloud.
The EventIndex is the complete catalogue of all ATLAS real and simulated events, keeping the references to all permanent files that contain a given event in any processing stage; its implementation ...has been substantially revised in advance of LHC Run 3 to be able to scale to the higher production rates. The Event Picking Server automates the procedure of finding the locations of large numbers of events, extracting and collecting them into separate files. It supports different formats of events and has an elastic workflow for different input data. The convenient graphical interface of the Event Picking Server is integrated with ATLAS SSO. The monitoring system controls the performance of all parts of the service.
In 2012, 14 Italian institutions participating in LHC Experiments won a grant from the Italian Ministry of Research (MIUR), with the aim of optimising analysis activities, and in general the Tier2 ...Tier3 infrastructure. We report on the activities being researched upon, on the considerable improvement in the ease of access to resources by physicists, also those with no specific computing interests. We focused on items like distributed storage federations, access to batch-like facilities, provisioning of user interfaces on demand and cloud systems. R&D on next-generation databases, distributed analysis interfaces, and new computing architectures was also carried on. The project, ending in the first months of 2016, will produce a white paper with recommendations on best practices for data-analysis support by computing centers.
The aim of this study was to evaluate consumers' acceptance of a peach palm snack and to determine its potential as a functional food by chemical characterization. An assessment was conducted with ...100 consumers to determine the acceptance of different snack formulations and the results were subjected to cluster analysis. This analysis revealed two groups. Group 2 included people that consume snacks and peach palm frequently and showed the highest grades for the snack evaluated characteristics. All the consumers in group 2 and approximately 85% of the consumers in group 1 indicated that they would buy the product suggesting that there is a niche market for the developed peach palm snack. Also, a qualitative evaluation, using mini focus groups, of the two most widely accepted formulas of the snack (chosen according to previously described study) was performed. The sessions considered the opinion of middle class professionals and housewives. It was determined that the combination of tara gum and carboxymethylcellulose (CMC) allows a positive synergistic effect on the sensory characteristics of the snack, highlighting natural peach flavor and improving crunchiness. In a dry basis, the snack contains per 100 g: 9 ± 4 g of fat, 14.0 ± 0.3 g of dietary fiber, 15500 ± 32 µg of carotenoids and has an antioxidant capacity of 4700 ± 8 µmol TE, which demonstrates its potential as a functional food.
The aim of this study was to evaluate consumers’ acceptance of a peach palm snack and to determine its potential as a functional food by chemical characterization. An assessment was conducted with ...100 consumers to determine the acceptance of different snack formulations and the results were subjected to cluster analysis. This analysis revealed two groups. Group 2 included people that consume snacks and peach palm frequently and showed the highest grades for the snack evaluated characteristics. All the consumers in group 2 and approximately 85% of the consumers in group 1 indicated that they would buy the product suggesting that there is a niche market for the developed peach palm snack. Also, a qualitative evaluation, using mini focus groups, of the two most widely accepted formulas of the snack (chosen according to previously described study) was performed. The sessions considered the opinion of middle class professionals and housewives. It was determined that the combination of tara gum and carboxymethylcellulose (CMC) allows a positive synergistic effect on the sensory characteristics of the snack, highlighting natural peach flavor and improving crunchiness. In a dry basis, the snack contains per 100 g: 9 ± 4 g of fat, 14.0 ± 0.3 g of dietary fiber, 15500 ± 32 μg of carotenoids and has an antioxidant capacity of 4700 ± 8 μmol TE, which demonstrates its potential as a functional food.
The differential cross section for the process $Z/\gamma^*\rightarrow ll$ ($l=e,\mu$) as a function of dilepton invariant mass is measured in pp collisions at $\sqrt{s}=$7 TeV at the LHC using the ...ATLAS detector. The measurement is performed in the $e$ and $\mu$ channels for invariant masses between 26 GeV and 66 GeV using an integrated luminosity of 1.6 fb$^{-1}$ collected in 2011 and these measurements are combined. The analysis is extended to invariant masses as low as 12 GeV in the muon channel using 35 pb$^{-1}$ of data collected in 2010. The cross sections are determined within fiducial acceptance regions and corrections to extrapolate the measurements to the full kinematic range are provided. Next-to-next-to-leading-order QCD predictions provide a significantly better description of the results than next-to-leading-order QCD calculations, unless the latter are matched to a parton shower calculation.
A total of 32% of children whose parents have some mental health problems are estimated to be diagnosed with some mental disorder later in life. As a consequence, a need arises to offer preventive ...psychological interventions aimed at these children. The aims were to investigate whether there are significant changes before and after the KidsTime program. In total, 101 people participated in the program, and pre‐intervention and post‐intervention data on self‐stigma, self‐esteem, resilience, parenting practices and strength and difficulties of thirty‐three parents with mental illness were obtained. Significant pre‐post differences were found in the ‘expression of affection’ subscale of the parenting practices and in self‐stigma. In the group of parents with a mental illness, the KidsTime program showed improvement of parents' emotional support for their children and a reduction in their self‐stigma as well. Multi‐family interventions are key to improving self‐stigma and parenting skills, and this can lead to prevention of future mental health problems in their children.
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