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692 results on '"Martone, Raffaele"'

1. Error Field and Correction Coils in DTT: a preliminary analysis

Author

Albanese, Raffaele, Bolzonella, Tommaso, Chiariello, Andrea G., Cucchiaro, Antonio, Iaiunese, Antonio, Lampasi, Alessandro, Martone, Raffaele, Piron, Lidia, Pizzuto, Aldo, and Zumbolo, Pasquale

Subjects
Physics - Plasma Physics
Abstract

The Divertor Tokamak Test (DTT) facility, construction starting at Frascati, Italy, is designed to test different solutions for divertor in view of DEMO. A preliminary analysis of the error fields (EFs) assumed a simplified model of rigid and independent displacements and rotations. A methodology based on the first order truncated Taylor expansion has been applied, linking the displacement parameters and the EFs within the required accuracies. A system of in-vessel copper coils has been designed to counteract EFs and the ampere-turns necessary to force them back within the request limits has been calculated. Here, the details of the analysis have been provided.

Published
2023
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3. Clinical Importance of Left Atrial Infiltration in Cardiac Transthyretin Amyloidosis

Author

Bandera, Francesco, Martone, Raffaele, Chacko, Liza, Ganesananthan, Sharmananthan, Gilbertson, Janet A., Ponticos, Markella, Lane, Thirusha, Martinez-Naharro, Ana, Whelan, Carol, Quarta, Cristina, Rowczenio, Dorota, Patel, Rishi, Razvi, Yousuf, Lachmann, Helen, Wechelakar, Ashutosh, Brown, James, Knight, Daniel, Moon, James, Petrie, Aviva, Cappelli, Francesco, Guazzi, Marco, Potena, Luciano, Rapezzi, Claudio, Leone, Ornella, Hawkins, Philip N., Gillmore, Julian D., and Fontana, Marianna

Published
2022
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14. Effective Evaluation of the Impact of the Magnetic Ripple on the Field Line Topology in DTT: Preliminary Results

Author

Iaiunese, Antonio, Albanese, Raffaele, Chiariello, Andrea G., Zumbolo, Pasquale, and Martone, Raffaele

Abstract

The tracking of magnetic field lines (FLs) in a Tokamak is a rather challenging issue because of the high computational burden required for field calculation and the high number of field points, especially in fully 3-D configurations. An effective scheme, based on a high-precision Chebyshev polynomials approximation of the field has been proposed to reduce the computational burden while guaranteeing the accuracy within suitable margins. In this article, the approach has been applied to evaluate the effect of the magnetic toroidal ripple on the scrape-off layer (SOL) of the reference configuration of the Divertor Tokamak Test (DTT) facility. The results demonstrate a significant impact on the last closed plasma magnetic surface but a limited effect on the magnetic load on the divertor surface. In addition, the article demonstrates that both effects depend on the specific plasma scenario analyzed and provides an interpretation key based on the analysis of the magnetic topology.

Published
2024
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18. Abstract 13148: Clinical Importance of Left Atrial Infiltration in Cardiac Transthyretin Amyloidosis

Author

Bandera, Francesco, Martone, Raffaele, Chacko, Liza, Ganesananthan, Sharmananthan, Lane, Thirusha, Martinez-Naharro, Ana, Wheland, Carol, Quarta, Cristina, Rowczenio, Dorota, Ponticos, Markella, Gilbertson, Janet A, Lachmann, Helen, Wechelakar, Ashutosh, Brown, James, Knight, Daniel, James, Moon, Petrie, Aviva, Cappelli, Francesco, Guazzi, Marco, Potena, Luciano, Leone, Ornella, Hawkins, Philip N, Gillmore, Julian D, and Fontana, Marianna

Published
2020
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21. Error field and correction coils in DTT: A preliminary analysis

Author

Albanese, Raffaele, primary, Bolzonella, Tommaso, additional, Chiariello, Andrea G., additional, Cucchiaro, Antonio, additional, Iaiunese, Antonio, additional, Lampasi, Alessandro, additional, Martone, Raffaele, additional, Piron, Lidia, additional, Pizzuto, Aldo, additional, and Zumbolo, Pasquale, additional

Published
2023
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31. A Multilabel Active Learning Framework for Microcontroller Performance Screening

Author

Bellarmino, Nicolo, Cantoro, Riccardo, Huch, Martin, Kilian, Tobias, Martone, Raffaele, Schlichtmann, Ulf, and Squillero, Giovanni

Abstract

In safety-critical applications, microcontrollers have to be tested to satisfy strict quality and performance constraints. It has been demonstrated that on-chip ring oscillators can be used as speed monitors to reliably predict the performances. However, any machine-learning (ML) model is likely to be inaccurate if trained on an inadequate dataset, and labeling data for training is quite a costly process. In this article, we present a methodology based on active learning to select the best samples to be included in the training set, significantly reducing the time and cost required. Moreover, since different speed measurements are available, we designed a multilabel technique to take advantage of their correlations. Experimental results demonstrate that the approach halves the training-set size, with respect to a random-labeling, while it increases the predictive accuracy, with respect to standard single-label ML models.

Published
2023
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34. Electromechanical analysis of end windings in turbo generators

Author

Albanese, Raffaele, Calvano, Flavio, DalMut, Giorgio, Ferraioli, Fabrizio, Formisano, Alessandro, Marignetti, Fabrizio, Martone, Raffaele, Rubinacci, Guglielmo, Tamburrino, Antonelle, Ventre, Salvatore, Professor. Bíró, Oszkár, Professor. Lowther, David A., and Professor. Alotto, Piergiorgio

Published
2011
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39. The Authors’ Reply

Author

Bandera, Francesco, primary, Martone, Raffaele, additional, Chacko, Liza, additional, Ganesananthan, Sharmananthan, additional, Gilbertson, Janet A., additional, Ponticos, Markella, additional, Lane, Thirusha, additional, Martinez-Naharro, Ana, additional, Whelan, Carol, additional, Quarta, Cristina, additional, Rowczenio, Dorota, additional, Patel, Rishi, additional, Razvi, Yousuf, additional, Lachmann, Helen, additional, Wechelakar, Ashutosh, additional, Brown, James, additional, Knight, Daniel, additional, Moon, James, additional, Petrie, Aviva, additional, Cappelli, Francesco, additional, Guazzi, Marco, additional, Potena, Luciano, additional, Rapezzi, Claudio, additional, Leone, Ornella, additional, Hawkins, Philip N., additional, Gillmore, Julian D., additional, and Fontana, Marianna, additional

Published
2021
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40. Effective exploitation of prior information in electrical impedance tomography for thermal monitoring of hyperthermia treatments

Author

Ferraioli, Fabrizio, Formisano, Alessandro, and Martone, Raffaele

Subjects
Medical equipment -- Usage, Physiological apparatus -- Usage, Tomography -- Analysis, Business, Electronics, Electronics and electrical industries
Abstract

Real-time monitoring of hyperthermia treatments for liver cancers by noninvasive techniques was investigated in the last two decades. Among the proposed techniques, Electrical Impedance Tomography (EIT) arises particular interest for its low cost and sensitivity to tissues parameter changes to be detected. In this paper, an approach based on the intensive but critical exploitation of prior information is proposed and a preconditioning method of the impedance measurements based on a sensitivity analysis is assessed. Index Terms--Biomedical imaging, biomedical monitoring, impedance tomography, radio frequency hyperthermia.

Published
2009

42. Cardiac Magnetic Resonance–Derived Extracellular Volume Mapping for the Quantification of Hepatic and Splenic Amyloid

Author

Chacko, Liza, primary, Boldrini, Michele, additional, Martone, Raffaele, additional, Law, Steven, additional, Martinez-Naharrro, Ana, additional, Hutt, David F., additional, Kotecha, Tushar, additional, Patel, Rishi K., additional, Razvi, Yousuf, additional, Rezk, Tamer, additional, Cohen, Oliver C., additional, Brown, James T., additional, Srikantharajah, Mukunthan, additional, Ganesananthan, Sharmananthan, additional, Lane, Thirusha, additional, Lachmann, Helen J., additional, Wechalekar, Ashutosh D., additional, Sachchithanantham, Sajitha, additional, Mahmood, Shameem, additional, Whelan, Carol J., additional, Knight, Daniel S., additional, Moon, James C., additional, Kellman, Peter, additional, Gillmore, Julian D., additional, Hawkins, Philip N., additional, and Fontana, Marianna, additional

Published
2021
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44. Criteria for the optimal design of magneto-encephalography measurement system

Author

Ferraioli, Fabrizio, Formisano, Alessandro, Martone, Raffaele, and Romagnuolo, Nicola

Subjects
Measuring instruments -- Usage, Brain -- Analysis, Magnetoencephalography -- Usage, Business, Electronics, Electronics and electrical industries
Abstract

Magneto-encephalography is a promising technique for the in vivo monitoring of brain activity. The information about neural activity is reconstructed from the electrical current map of the brain, which is in turn deduced, via an inverse problem resolution, from the magnetic field map measured by superconductive quantum interference devices placed around the head. In this paper, a possible strategy to improve the detection ability of the procedure by optimally designing the representation system is proposed and discussed. Index Terms--Electromagnetic modeling of biological systems, inverse problems, source identification.

Published
2006

45. A fast method for statistical robust optimization

Author

Cioffi, Marco, Formisano, Alessandro, Martone, Raffaele, Steiner, Gerald, and Watzenig, Daniel

Subjects
Magnetic resonance imaging -- Analysis, Mathematical optimization -- Analysis, Mathematical statistics -- Analysis, Robust statistics, Business, Electronics, Electronics and electrical industries
Abstract

In electromagnetic design, to counteract the effect of mechanical tolerances and/or assembly inaccuracies on the performance of 'optimized' devices, robust design techniques must be adopted. One of the most effective approaches takes advantage from statistical analysis to improve average performance rather than nominal one during the optimization process. Anyway, suitable measures must be taken to reduce the computational burden required by these strategies. In this paper a novel method for statistical design of electromagnetic power devices is presented, combining the strengths of existing methods while offering superior efficiency. It is inspired by Taguchi's approach and makes use of the unscented transformation. The computational requirements are considerably reduced compared to conventional statistical optimization methods. The proposed approach is implemented for the robust design of a magnetic resonance imaging superconducting device. Index Terms--Magnetic resonance imaging (MRI), optimization methods, robust design, unscented transformation.

Published
2006

46. Three-dimensional quench propagation in HTS coils

Author

Cavaliere, Vincenzo, Cioffi, Marco, Formisano, Alessandro, Martone, Raffaele, and Masullo, Giovanni

Subjects
High temperature superconductors -- Magnetic properties, High temperature superconductors -- Electric properties, Electromagnetism -- Research, Anisotropy -- Analysis, Business, Electronics, Electronics and electrical industries
Abstract

The behavior of high temperature superconductor (HTS) coils is ruled by thermal and electromagnetic interacting phenomena. In this paper, a three-dimensional modeling of the quench propagation in HTS coils is discussed and numerically modeled. As a matter of fact, in spite of the axially symmetric design, a simple two-dimensional modelization may reveal too rough, particularly from the thermal point of view. In addition, the possibility of representing the complex structure of the coil composite material by means of a simplified homogeneous and anisotropic model is discussed and the advantages in terms of computational burden are evaluated. Index Terms--Coupled problems, electromagnetic analysis, high temperature superconductor (HTS).

Published
2006

47. Improvement of MRI magnet design through sensitivity analysis

Author

Cavaliere, Vincenzo, Cioffi, Marco, Formisano, Alessandro, and Martone, Raffaele

Subjects
Monte Carlo method -- Research, Magnetic resonance imaging -- Research, Superconducting magnets -- Research, Electrical equipment and supplies industry -- Research, Electrical engineering, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Conferences, meetings and seminars
Abstract

A statistical approach is proposed for assessing the effects of manufacturing tolerances on the field homogeneity of Magnetic Resonance Imaging (MRI) magnets.

Published
2002

48. Optimal magnetic probes location for current reconstruction in multistrands superconducting cables

Author

Bruzzone, Pierluigi, Formisano, Alessandro, and Martone, Raffaele

Subjects
Electrical engineering -- Research, Magnetism -- Research, Superconductive devices -- Research, Electric currents -- Models, Business, Electronics, Electronics and electrical industries
Abstract

The critical current in multistrands superconducting (SC) cables is usually lower than expected due to current unbalance among strands and early current sharing. It is then crucial to be able to detect the current distribution in SC cables to assess their stability properties. Due to the ill-conditioning of the problem, the reconstruction accuracy may prove very sensitive to the measurement noise and to the uncertainty on the numerical data. In this work, a possible allocation strategy for the magnetic probes is discussed, aimed at the optimization of the reconstruction process. Index Terms--Identification, magnetic probes, superconducting (SC) cables.

Published
2002

49. A simple echocardiographic score to rule out cardiac amyloidosis

Author

Aimo, Alberto, primary, Chubuchny, Vladyslav, additional, Vergaro, Giuseppe, additional, Barison, Andrea, additional, Nicol, Martin, additional, Cohen‐Solal, Alain, additional, Castiglione, Vincenzo, additional, Spini, Valentina, additional, Giannoni, Alberto, additional, Petersen, Christina, additional, Taddei, Claudia, additional, Pasanisi, Emilio, additional, Chacko, Liza, additional, Martone, Raffaele, additional, Knight, Dan, additional, Brown, James, additional, Martinez‐Naharro, Ana, additional, Passino, Claudio, additional, Fontana, Marianna, additional, and Emdin, Michele, additional

Published
2020
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