553 research outputs found

    ANÁLISIS DE LA SERIE HISTÓRICA DEL VOLUMEN DE AGUA EN LA REPRESA ENGENHEIRO ÁVIDOS EN PARAÍBA

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    A região Nordeste do Brasil possui um clima diferenciado das demais regiões do país, sendo influenciada por diversos fatores climáticos que contribuem diretamente para longos períodos de estiagem na região. Além disso, devido à escassez de recursos hídricos, costuma-se construir barragens para garantir o abastecimento de água aos mais diversos setores em períodos críticos. Nesse sentido, o presente trabalho analisou a série temporal da barragem Engenheiro Ávidos, localizada no sertão da Paraíba, entre janeiro de 2000 e dezembro de 2022 com dados disponíveis no portal AESA. Foi utilizado o software R 4.1.2 através do pacote “forecast” utilizando a função “auto.arima” para tratamento dos dados. O modelo que apresentou maior precisão foi o ARIMA (1,1,0), onde foi possível encontrar possíveis estimativas para os valores das séries futuras até junho de 2023.The Northeast region of Brazil has a climate that is different from other regions of the country, being influenced by several climatic factors that directly contribute to long periods of drought in the region. Furthermore, due to the scarcity of water resources, it is customary to build dams to guarantee water supply to the most varied sectors during critical periods. In this sense, the present work analyzed the time series of the Engenheiro Ávidos dam, located in the hinterland of Paraíba, between January 2000 and December 2022 with data available on the AESA portal. The R 4.1.2 software was used through the "forecast" package using the "auto. arima" function for data processing. The model that showed the highest accuracy was ARIMA (1,1,0), where it was possible to find possible estimates for future series values until June 2023. La región del Nordeste de Brasil tiene un clima que es diferente de otras regiones del país, siendo influenciado por varios factores climáticos que contribuyen directamente a los largos períodos de sequía en la región. Además, debido a la escasez de recursos hídricos, es costumbre construir represas para garantizar el abastecimiento de agua a los más variados sectores en períodos críticos. En ese sentido, el presente trabajo analizó la serie temporal de la represa Engenheiro Ávidos, ubicada en el interior de Paraíba, entre enero de 2000 y diciembre de 2022 con datos disponibles en el portal AESA. Se utilizó el software R 4.1.2 a través del paquete “forecast” utilizando la función “auto. arima” para el procesamiento de datos. El modelo que mostró mayor precisión fue ARIMA (1,1,0), donde fue posible encontrar posibles estimaciones para valores de series futuras hasta junio de 2023.A região Nordeste do Brasil possui um clima diferenciado das demais regiões do país, sendo influenciada por diversos fatores climáticos que contribuem diretamente para longos períodos de estiagem na região. Além disso, devido à escassez de recursos hídricos, costuma-se construir barragens para garantir o abastecimento de água aos mais diversos setores em períodos críticos. Nesse sentido, o presente trabalho analisou a série temporal da barragem Engenheiro Ávidos, localizada no sertão da Paraíba, entre janeiro de 2000 e dezembro de 2022 com dados disponíveis no portal AESA. Foi utilizado o software R 4.1.2 através do pacote “forecast” utilizando a função “auto.arima” para tratamento dos dados. O modelo que apresentou maior precisão foi o ARIMA (1,1,0), onde foi possível encontrar possíveis estimativas para os valores das séries futuras até junho de 2023

    NEOTROPICAL CARNIVORES: a data set on carnivore distribution in the Neotropics

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    Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropical region: Canidae; Felidae; Mephitidae; Mustelidae; Otariidae; Phocidae; Procyonidae; and Ursidae. Herein, we include published and unpublished data on native terrestrial Neotropical carnivores (Canidae; Felidae; Mephitidae; Mustelidae; Procyonidae; and Ursidae). NEOTROPICAL CARNIVORES is a publicly available data set that includes 99,605 data entries from 35,511 unique georeferenced coordinates. Detection/non-detection and quantitative data were obtained from 1818 to 2018 by researchers, governmental agencies, non-governmental organizations, and private consultants. Data were collected using several methods including camera trapping, museum collections, roadkill, line transect, and opportunistic records. Literature (peer-reviewed and grey literature) from Portuguese, Spanish and English were incorporated in this compilation. Most of the data set consists of detection data entries (n = 79,343; 79.7%) but also includes non-detection data (n = 20,262; 20.3%). Of those, 43.3% also include count data (n = 43,151). The information available in NEOTROPICAL CARNIVORES will contribute to macroecological, ecological, and conservation questions in multiple spatio-temporal perspectives. As carnivores play key roles in trophic interactions, a better understanding of their distribution and habitat requirements are essential to establish conservation management plans and safeguard the future ecological health of Neotropical ecosystems. Our data paper, combined with other large-scale data sets, has great potential to clarify species distribution and related ecological processes within the Neotropics. There are no copyright restrictions and no restriction for using data from this data paper, as long as the data paper is cited as the source of the information used. We also request that users inform us of how they intend to use the data

    Development of the CMS detector for the CERN LHC Run 3

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    International audienceSince the initial data taking of the CERN LHC, the CMS experiment has undergone substantial upgrades and improvements. This paper discusses the CMS detector as it is configured for the third data-taking period of the CERN LHC, Run 3, which started in 2022. The entire silicon pixel tracking detector was replaced. A new powering system for the superconducting solenoid was installed. The electronics of the hadron calorimeter was upgraded. All the muon electronic systems were upgraded, and new muon detector stations were added, including a gas electron multiplier detector. The precision proton spectrometer was upgraded. The dedicated luminosity detectors and the beam loss monitor were refurbished. Substantial improvements to the trigger, data acquisition, software, and computing systems were also implemented, including a new hybrid CPU/GPU farm for the high-level trigger

    Development of the CMS detector for the CERN LHC Run 3

    No full text
    International audienceSince the initial data taking of the CERN LHC, the CMS experiment has undergone substantial upgrades and improvements. This paper discusses the CMS detector as it is configured for the third data-taking period of the CERN LHC, Run 3, which started in 2022. The entire silicon pixel tracking detector was replaced. A new powering system for the superconducting solenoid was installed. The electronics of the hadron calorimeter was upgraded. All the muon electronic systems were upgraded, and new muon detector stations were added, including a gas electron multiplier detector. The precision proton spectrometer was upgraded. The dedicated luminosity detectors and the beam loss monitor were refurbished. Substantial improvements to the trigger, data acquisition, software, and computing systems were also implemented, including a new hybrid CPU/GPU farm for the high-level trigger

    Development of the CMS detector for the CERN LHC Run 3

    No full text
    International audienceSince the initial data taking of the CERN LHC, the CMS experiment has undergone substantial upgrades and improvements. This paper discusses the CMS detector as it is configured for the third data-taking period of the CERN LHC, Run 3, which started in 2022. The entire silicon pixel tracking detector was replaced. A new powering system for the superconducting solenoid was installed. The electronics of the hadron calorimeter was upgraded. All the muon electronic systems were upgraded, and new muon detector stations were added, including a gas electron multiplier detector. The precision proton spectrometer was upgraded. The dedicated luminosity detectors and the beam loss monitor were refurbished. Substantial improvements to the trigger, data acquisition, software, and computing systems were also implemented, including a new hybrid CPU/GPU farm for the high-level trigger

    Development of the CMS detector for the CERN LHC Run 3

    No full text
    Since the initial data taking of the CERN LHC, the CMS experiment has undergone substantial upgrades and improvements. This paper discusses the CMS detector as it is configured for the third data-taking period of the CERN LHC, Run 3, which started in 2022. The entire silicon pixel tracking detector was replaced. A new powering system for the superconducting solenoid was installed. The electronics of the hadron calorimeter was upgraded. All the muon electronic systems were upgraded, and new muon detector stations were added, including a gas electron multiplier detector. The precision proton spectrometer was upgraded. The dedicated luminosity detectors and the beam loss monitor were refurbished. Substantial improvements to the trigger, data acquisition, software, and computing systems were also implemented, including a new hybrid CPU/GPU farm for the high-level trigger.Since the initial data taking of the CERN LHC, the CMS experiment has undergone substantial upgrades and improvements. This paper discusses the CMS detector as it is configured for the third data-taking period of the CERN LHC, Run 3, which started in 2022. The entire silicon pixel tracking detector was replaced. A new powering system for the superconducting solenoid was installed. The electronics of the hadron calorimeter was upgraded. All the muon electronic systems were upgraded, and new muon detector stations were added, including a gas electron multiplier detector. The precision proton spectrometer was upgraded. The dedicated luminosity detectors and the beam loss monitor were refurbished. Substantial improvements to the trigger, data acquisition, software, and computing systems were also implemented, including a new hybrid CPU/GPU farm for the high-level trigger

    Development of the CMS detector for the CERN LHC Run 3

    No full text
    International audienceSince the initial data taking of the CERN LHC, the CMS experiment has undergone substantial upgrades and improvements. This paper discusses the CMS detector as it is configured for the third data-taking period of the CERN LHC, Run 3, which started in 2022. The entire silicon pixel tracking detector was replaced. A new powering system for the superconducting solenoid was installed. The electronics of the hadron calorimeter was upgraded. All the muon electronic systems were upgraded, and new muon detector stations were added, including a gas electron multiplier detector. The precision proton spectrometer was upgraded. The dedicated luminosity detectors and the beam loss monitor were refurbished. Substantial improvements to the trigger, data acquisition, software, and computing systems were also implemented, including a new hybrid CPU/GPU farm for the high-level trigger

    Development of the CMS detector for the CERN LHC Run 3

    No full text
    Since the initial data taking of the CERN LHC, the CMS experiment has undergone substantial upgrades and improvements. This paper discusses the CMS detector as it is configured for the third data-taking period of the CERN LHC, Run 3, which started in 2022. The entire silicon pixel tracking detector was replaced. A new powering system for the superconducting solenoid was installed. The electronics of the hadron calorimeter was upgraded. All the muon electronic systems were upgraded, and new muon detector stations were added, including a gas electron multiplier detector. The precision proton spectrometer was upgraded. The dedicated luminosity detectors and the beam loss monitor were refurbished. Substantial improvements to the trigger, data acquisition, software, and computing systems were also implemented, including a new hybrid CPU/GPU farm for the high-level trigger

    Search for high-mass exclusive diphoton production with tagged protons in proton-proton collisions at s= \sqrt{s} = 13 TeV

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    A search is presented for high-mass exclusive diphoton production via photon-photon fusion in proton-proton collisions at s= \sqrt{s} = 13 TeV in events where both protons survive the interaction. The analysis utilizes data corresponding to an integrated luminosity of 103 fb1 ^{-1} collected in 2016--2018 with the central CMS detector and the CMS and TOTEM precision proton spectrometer (PPS). Events that have two photons with high transverse momenta (pTγ> p_{\mathrm{T}}^{\gamma} > 100 GeV), back-to-back in azimuth, and with a large diphoton invariant mass (mγγ> m_{\gamma\gamma} > 350 GeV) are selected. To remove the dominant inclusive diphoton backgrounds, the kinematic properties of the protons detected in PPS are required to match those of the central diphoton system. Only events having opposite-side forward protons detected with a fractional momentum loss between 0.035 and 0.15 (0.18) for the detectors on the negative (positive) side of CMS are considered. One exclusive diphoton candidate is observed for an expected background of 1.1 events. Limits at 95% confidence level are derived for the four-photon anomalous coupling parameters ζ1 |\zeta_1| 100 GeV), back-to-back in azimuth, and with a large diphoton invariant mass (mγγ>m_{\gamma\gamma} \gt 350 GeV) are selected. To remove the dominant inclusive diphoton backgrounds, the kinematic properties of the protons detected in PPS are required to match those of the central diphoton system. Only events having opposite-side forward protons detected with a fractional momentum loss between 0.035 and 0.15 (0.18) for the detectors on the negative (positive) side of CMS are considered. One exclusive diphoton candidate is observed for an expected background of 1.1 events. Limits at 95% confidence level are derived for the four-photon anomalous coupling parameters ζ1<\lvert\zeta_1\rvert \lt 0.073 TeV4^{-4} and ζ2<\lvert\zeta_2\rvert \lt 0.15 TeV4^{-4}, using an effective field theory. Additionally, upper limits are placed on the production of axion-like particles with coupling strength to photons f1f^{-1} that varies from 0.03 TeV1^{-1} to 1 TeV1^{-1} over the mass range from 500 to 2000 GeV

    Proton reconstruction with the CMS-TOTEM Precision Proton Spectrometer

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    International audienceThe Precision Proton Spectrometer (PPS) of the CMS and TOTEM experiments collected 107.7 fb1^{-1} in proton-proton (pp) collisions at the LHC at 13 TeV (Run 2). This paper describes the key features of the PPS alignment and optics calibrations, the proton reconstruction procedure, as well as the detector efficiency and the performance of the PPS simulation. The reconstruction and simulation are validated using a sample of (semi)exclusive dilepton events. The performance of PPS has proven the feasibility of continuously operating a near-beam proton spectrometer at a high luminosity hadron collider
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