Výsledky vyhledávání - "Diogo R Ferreira"

Akademický článek

Learning the dynamics of a one-dimensional plasma model with graph neural networks

Autor: Diogo D Carvalho, Diogo R Ferreira, Luís O Silva

Publikováno v: Machine Learning: Science and Technology, Vol 5, Iss 2, p 025048 (2024)

We explore the possibility of fully replacing a plasma physics kinetic simulator with a graph neural network-based simulator. We focus on this class of surrogate models given the similarity between their message-passing update mechanism and the tradi

Externí odkaz: https://doaj.org/article/9971926299a647329025699421e80646

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Deep Learning for the Analysis of Disruption Precursors Based on Plasma Tomography

Autor: Pedro J. Carvalho, Carlo Sozzi, Peter J. Lomas, Jet Contributors, Diogo R. Ferreira

Publikováno v: Fusion science and technology 76 (2020): 901–911. doi:10.1080/15361055.2020.1820749
info:cnr-pdr/source/autori:Ferreira, Diogo R.; Carvalho, Pedro J.; Sozzi, Carlo; Lomas, Peter J./titolo:Deep Learning for the Analysis of Disruption Precursors Based on Plasma Tomography/doi:10.1080%2F15361055.2020.1820749/rivista:Fusion science and technology/anno:2020/pagina_da:901/pagina_a:911/intervallo_pagine:901–911/volume:76
Fusion Science and Technology

The JET baseline scenario is being developed to achieve high fusion performance and sustained fusion power. However, with higher plasma current and higher input power, an increase in pulse disruptivity is being observed. Although there is a wide rang

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e21015aab9be0cf04a67f8655eaaf9d4
https://doi.org/10.1080/15361055.2020.1820749

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Aripiprazole-Induced Skin Reaction

Autor: Diogo R. Ferreira, Elsa Reis, João Miguel Pereira, Lígia Castanheira, Magda Lemos, Elsa Fernandes, Rodrigo Santos

Publikováno v: The Primary Care Companion For CNS Disorders. 23

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6c07c8aeb75363d5ef464663b5fe556
https://doi.org/10.4088/pcc.20l02772

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Quantification of the uncertainty of the visual detection of the end-point of a titration: Determination of total hardness in water

Autor: Cristina M. R. R. Oliveira, Ricardo J.N. Bettencourt da Silva, Miguel Barros, Diogo R. Ferreira

Publikováno v: Microchemical Journal. 146:856-863

For most titrations based on the visual detection of the end-point this operation is an important uncertainty component. Well-known models are available to estimate the uncertainty of gravimetric and volumetric steps involved in these titrations, but

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa0afce7be9920ba2d3f446ee383bc05
https://doi.org/10.1016/j.microc.2019.01.069

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Using HPC infrastructures for deep learning applications in fusion research

Autor: Diogo R. Ferreira

In the fusion community, the use of high performance computing (HPC) has been mostly dominated by heavy-duty plasma simulations, such as those based on particle-in-cell and gyrokinetic codes. However, there has been a growing interest in applying mac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cadf601c9904b42b0958a665d9fec98e
http://arxiv.org/abs/2106.06101

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Economic Analysis of Portuguese Public Hospitals Through the Construction of Quality, Efficiency, Access, and Financial Related Composite Indicators

Autor: Diogo R. Ferreira, Maria Isabel Pedro, Rita Ventura Matos

Publikováno v: Social Indicators Research

Hospitals consume most of the health systems' financial resources. In Portugal, for instance, public hospitals represent more than half of the National Health Service debt and are decisive in their financial insufficiency. Although profit is not the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bac2fa16081906fe607b2ed3151b4ef7
https://pubmed.ncbi.nlm.nih.gov/33723472

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How Much Does Stock Prediction Improve with Sentiment Analysis?

Autor: Frederico G. Monteiro, Diogo R. Ferreira

Publikováno v: Mining Data for Financial Applications ISBN: 9783030669805
MIDAS@PKDD/ECML

Financial markets, such as the stock exchange, are known to be extremely volatile and sensitive to news published in the media. Using sentiment analysis, as opposed to using time series alone, should provide a better indication for the prospects of a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5dfd6bdd63a9710b1463ddeee47b2904
https://doi.org/10.1007/978-3-030-66981-2_2

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Onset of tearing modes in plasma termination on JET: the role of temperature hollowing and edge cooling

Autor: S. Nowak, Jet Contributors, F.G. Rimini, E. Alessi, D. Van Eester, L. Garzotti, Carlo Sozzi, M. Baruzzo, E. Lerche, D. Frigione, Fulvio Auriemma, D. Brunetti, E. Giovannozzi, P. Buratti, G. Pucella, E. Joffrin, L. Piron, Diogo R. Ferreira, P. J. Lomas

Publikováno v: Nuclear Fusion
Nuclear fusion (Online) 61 (2021): 046020-1–046020-12. doi:10.1088/1741-4326/abe3c7
info:cnr-pdr/source/autori:Pucella G.; Buratti P.; Giovannozzi E.; Alessi E.; Auriemma F.; Brunetti D.; Ferreira D.R.; Baruzzo M.; Frigione D.; Garzotti L.; Joffrin E.; Lerche E.; Lomas P.J.; Nowak S.; Piron L.; Rimini F.; Sozzi C.; Van Eester D./titolo:Onset of tearing modes in plasma termination on JET: The role of temperature hollowing and edge cooling/doi:10.1088%2F1741-4326%2Fabe3c7/rivista:Nuclear fusion (Online)/anno:2021/pagina_da:046020-1/pagina_a:046020-12/intervallo_pagine:046020-1–046020-12/volume:61

In this work the onset of tearing modes in the termination phase of plasma pulses on JET is investigated. It is shown that the broadening or the shrinking of the current density profile, as a consequence of a core hollowing or an edge cooling of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2104564f2ed6f20225d1adb01a065303

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