Author
Vittorio Romano
Other affiliations: University of Salerno, University of Calabar, Instituto Politécnico Nacional
Bio: Vittorio Romano is an academic researcher from University of Catania. The author has contributed to research in topics: Boltzmann equation & Graphene. The author has an hindex of 29, co-authored 181 publications receiving 2361 citations. Previous affiliations of Vittorio Romano include University of Salerno & University of Calabar.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, the problem of the closure of the moment equations of the semiconductor Boltzmann equation was studied in the framework of the Kane dispersion relation (therefore avoiding the limitations of the parabolic band approximation).
Abstract: The problem of the closure of the moment equations of the semiconductor Boltzmann equation is studied in the framework of the Kane dispersion relation (therefore avoiding the limitations of the parabolic band approximation). By using the maximum entropy ansatz for the closure one obtains, in the limit of small anisotropy, explicit constitutive relations for the stress tensor and the flux of energy flux tensor. The results obtained are in remarkable agreement with those arising from Monte Carlo simulations.
109 citations
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TL;DR: A generalization of the Nessyahu--Tadmor scheme to the nonhomogeneous case by including the cell averages of the production terms in the discrete balance equations and a second order scheme uniformly accurate in the relaxation parameter is derived and its properties analyzed.
Abstract: Several models in mathematical physics are described by quasi-linear hyperbolic systems with source term and in several cases the production term can become stiff. Here suitable central numerical schemes for such problems are developed and applications to the Broadwell model and extended thermodynamics are presented.
The numerical methods are a generalization of the Nessyahu--Tadmor scheme to the nonhomogeneous case by including the cell averages of the production terms in the discrete balance equations. A second order scheme uniformly accurate in the relaxation parameter is derived and its properties analyzed. Numerical tests confirm the accuracy and robustness of the scheme.
106 citations
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TL;DR: The sequence indicates that Retinol Binding Protein is synthesized as a single polypeptide chain precursor which is then matured to the secreted protein by removal of a leader peptide.
Abstract: We have isolated and sequenced a cDNA clone coding for human Retinol Binding Protein. The sequence indicates that Retinol Binding Protein is synthesized as a single polypeptide chain precursor which is then matured to the secreted protein by removal of a leader peptide. Southern and Northern blot analysis suggest that the gene is present in one or few copies per haploid genome and is transcribed in a single mRNA species.
92 citations
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TL;DR: In this article, the Kane dispersion relation for the energy band was used to obtain closure relations for the production terms of the balance equations describing the motion of electrons in semiconductors.
Abstract: Closure relations for the production terms of the balance equations describing the motion of electrons in semiconductors are obtained by using the distribution function given, according to 1], by the maximum entropy principle in the case of the Kane dispersion relation for the energy band. Scatterings of electrons with non polar optical phonons (both for intervalley and intravalley interactions), acoustic phonons and impurities are considered. Applications to bulk silicon are presented. In particular the overshoot and saturation eeects are described with good accuracy.
82 citations
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Languedoc-Roussillon Universities1, French Institute of Health and Medical Research2, University College London3, NHS England4, University of Oulu5, University of Helsinki6, Centre national de la recherche scientifique7, Seconda Università degli Studi di Napoli8, University of Cambridge9, Medical University of Warsaw10, University of Lorraine11, University of Bristol12, University of Salerno13, Humboldt University of Berlin14, Paris Descartes University15, Maastricht University16, University of Southampton17, Odense University18, Utrecht University19, University of Kiel20, University of Coimbra21, Karolinska Institutet22, University Medical Center Groningen23, Polytechnic University of Valencia24
TL;DR: The current paper describes the rationale and the process by which the aims of the meeting will be reached and an operational definition of Active and Healthy Ageing including tools that may be used for this are proposed.
Abstract: Health is a multi-dimensional concept, capturing how people feel and function. The broad concept of Active and Healthy Ageing was proposed by the World Health Organisation (WHO) as the process of optimizing opportunities for health to enhance quality of life as people age. It applies to both individuals and population groups. A universal Active and Healthy Ageing definition is not available and it may differ depending on the purpose of the definition and/or the questions raised. While the European Innovation Partnership on Active and Healthy Ageing (EIP on AHA) has had a major impact, a definition of Active and Healthy Ageing is urgently needed. A meeting was organised in Montpellier, France, October 20-21, 2014 as the annual conference of the EIP on AHA Reference Site MACVIA-LR (Contre les Maladies Chroniques pour un Vieillissement Actif en Languedoc Roussillon) to propose an operational definition of Active and Healthy Ageing including tools that may be used for this. The current paper describes the rationale and the process by which the aims of the meeting will be reached.
81 citations
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TL;DR: This book by a teacher of statistics (as well as a consultant for "experimenters") is a comprehensive study of the philosophical background for the statistical design of experiment.
Abstract: THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON
13,333 citations
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TL;DR: In this paper, the authors discuss existence, uniqueness, and structural stability of solutions of nonlinear differential equations of fractional order, and investigate the dependence of the solution on the order of the differential equation and on the initial condition.
3,047 citations
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TL;DR: To the best of our knowledge, there is only one application of mathematical modelling to face recognition as mentioned in this paper, and it is a face recognition problem that scarcely clamoured for attention before the computer age but, having surfaced, has attracted the attention of some fine minds.
Abstract: to be done in this area. Face recognition is a problem that scarcely clamoured for attention before the computer age but, having surfaced, has involved a wide range of techniques and has attracted the attention of some fine minds (David Mumford was a Fields Medallist in 1974). This singular application of mathematical modelling to a messy applied problem of obvious utility and importance but with no unique solution is a pretty one to share with students: perhaps, returning to the source of our opening quotation, we may invert Duncan's earlier observation, 'There is an art to find the mind's construction in the face!'.
3,015 citations
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TL;DR: The results show subtle differences between eukaryotic and prokaryotic sequences, but the general impression of signal sequences as being highly variable is reinforced.
2,053 citations
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TL;DR: It is proved that a scalar version of the high-resolution central scheme is nonoscillatory in the sense of satisfying the total-variation diminishing property in the one-dimensional case and the maximum principle in two-space dimensions.
1,685 citations