Search results for "Standard"
showing 9 items of 3299 documents
Excess electronic recoil events in XENON1T
2020
We report results from searches for new physics with low-energy electronic recoil data recorded with the XENON1T detector. With an exposure of 0.65 t-y and an unprecedentedly low background rate of $76\pm2$ events/(t y keV) between 1 and 30 keV, the data enables sensitive searches for solar axions, an enhanced neutrino magnetic moment, and bosonic dark matter. An excess over known backgrounds is observed at low energies and most prominent between 2 and 3 keV. The solar axion model has a 3.4$\sigma$ significance, and a 3D 90% confidence surface is reported for axion couplings to electrons, photons, and nucleons. This surface is inscribed in the cuboid defined by $g_{ae}<3.8 \times 10^{-12}$,…
The application of the SMETA audit protocol on the management of the CSR of Peruvian companies : a case study of standardization via SMETA in manufac…
2016
Standardization in Corporate Social Responsibility has become more popular since re-cent years. A wide range of standards that seek to implement and evaluate the Corpo-rate Social Responsibility in companies, has become increasingly popular worldwide nowadays especially when companies producing goods and services are required by their international customers worldwide to obtain these standards. Most studies of this phenomenon have been done from the point of view of big companies and international brands and does not take into account the point of view of manufacturers located in the developing countries, were most goods are manufactured. This thesis investigates the influence of the Corpor…
Impact of using different levels of threshold-based artefact correction on the quantification of heart rate variability in three independent human co…
2020
Heart rate variability (HRV) is a non-invasive indicator of autonomic nervous system function. HRV recordings show artefacts due to technical and/or biological issues. The Kubios software is one of the most used software to process HRV recordings, offering different levels of threshold-based artefact correction (i.e., Kubios filters). The aim of the study was to analyze the impact of different Kubios filters on the quantification of HRV derived parameters from short-term recordings in three independent human cohorts. A total of 312 participants were included: 107 children with overweight/obesity (10.0 ±
Are the Growth Standards of the World Health Organization Valid for Spanish Children? The SONEV Study
2021
Background: The use of different growth tables to assess the population's nutritional status has given rise to a series of limitations arising from the lack of consensus and uniform methodological criteria. This leads to a disparity of results that prevent an accurate and reliable diagnosis of whether a child is overweight or obese.Objective: The purpose of this study was to develop growth references for weight, height, and body mass index for Eastern-Spanish children from 6 to 16 years of age.Methods: The final sample used to fit the growth curves was made up of 1,102 observations. The 2007 WHO curves are currently used for Child Health Service Cards. Therefore, to make the comparison of t…
Zagadnienie inwentarzy w muzeach i inwentaryzacji kolekcji w świetle dorobku normatywnego UNESCO
2022
W artykule przedstawiono zagadnienia inwentarzy w muzeach i inwentaryzacji kolekcji w świetle dorobku normatywnego UNESCO jako podmiotu wyznaczającego standardy zawarte w dokumentach wiążących i o charakterze soft law (zalecenia). Zaprezentowano kwestie związane z implementacją Konwencji UNESCO z 1970 r. dotyczącej środków zmierzających do zakazu i zapobiegania nielegalnemu przywozowi, wywozowi i przenoszeniu własności dóbr kultury, z rekomendacjami UNESCO dotyczącymi muzeów oraz ze znaczeniem ewidencjonowania dóbr kultury w walce z nielegalnym obrotem ruchomymi składnikami dziedzictwa kultury. Wobec nowych wyzwań, w tym ostatnich konfliktów zbrojnych, ewidencjonowanie dóbr kultury jest sz…
Etude en champ proche et champ lointain de surfaces métalliques : apport des microscopies à sonde locale à l'étude des étalons de masse
2005
Among the international system of units (SI) the kilogram is the only one which is still defined by a material artefact, the international prototype of the platinum iridium kilogram. The instability of mass standards is one of the major concerns of national metrology institutes and the subject of numerous studies. Interest in microscopic studies of surface quality of a mass has grown, as it is well known that surface roughness is a factor in determining the long-term stability of mass standards. This thesis is devoted to the study in near field and far field for determining the topography and roughness of metallic surfaces, in related with different institute, national and international met…
Vers un environnement informatisé d'évaluation de la qualité ergonomique d'interfaces multimédia : Étude exploratoire
2000
Our objective is to encourage the human-computer interface designers to be more interested in the uses made of their product by taking into account to a higher degree the human-factor in the testing phase which often is too focused on technical aspects. We want to facilitate the integration of the user as a source of evaluation during the testing phase. Our aim is to offer the designer a software environment of practical tests that allow them to have their own products evaluated by their users. We undertook an experiment to explore the feasibility of this project.
Vers un environnement informatisé d'évaluation de la qualité ergonomique d'interfaces multimédia : Étude exploratoire
2000
Our objective is to encourage the human-computer interface designers to be more interested in the uses made of their product by taking into account to a higher degree the human-factor in the testing phase which often is too focused on technical aspects. We want to facilitate the integration of the user as a source of evaluation during the testing phase. Our aim is to offer the designer a software environment of practical tests that allow them to have their own products evaluated by their users. We undertook an experiment to explore the feasibility of this project.
Search for the Decay of the Higgs Boson to Charm Quarks with the ATLAS Experiment
2018
A direct search for the standard model Higgs boson decaying to a pair of charm quarks is presented. Associated production of the Higgs and Z bosons, in the decay mode ZH→ℓ+ℓ−c¯c is studied. A data set with an integrated luminosity of 36.1 fb−1 of pp collisions at √s=13TeV recorded by the ATLAS experiment at the LHC is used. The H→c¯c signature is identified using charm-tagging algorithms. The observed (expected) upper limit on σ(pp→ZH)×B(H→c¯c) is 2.7 (3.9+2.1−1.1) pb at the 95% confidence level for a Higgs boson mass of 125 GeV, while the standard model value is 26 fb.