cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Direct Measurements of Neutrino Mass
Creators: name: Formaggio, Joseph A.
name: de Gouvêa, André Luiz C.
name: Robertson, R. G. Hamish
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The turn of the 21st century witnessed a sudden shift in our fundamental understanding of particle physics. While the minimal Standard Model predicts that neutrino masses are exactly zero, the discovery of neutrino oscillations proved the Standard Model wrong. Neutrino oscillation measurements, however, do not shed light on the scale of neutrino masses, nor the mechanism by which those are generated. The neutrino mass scale is most directly accessed by studying the energy spectrum generated by beta decay or electron capture -- a technique dating back to Enrico Fermi's formulation of radioactive decay. In this Article, we review the methods and techniques -- both past and present -- aimed at measuring neutrino masses kinematically. We focus on recent experimental developments that have emerged in the past decade, overview the spectral refinements that are essential in the treatment of the most sensitive experiments, and give a simple yet effective protocol for estimating the sensitivity. Finally, we provide an outlook of what future experiments might be able to achieve.
description: 99 pages, 32 figures, for Physics Reports. v2 corrects some minor errors, adds some references
Coulomb interaction, phonons, and superconductivity in twisted bilayer graphene
Creators: name: Cea, Tommaso
name: Guinea, Francisco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The polarizability of twisted bilayer graphene, due to the combined effect of electron-hole pairs, plasmons, and acoustic phonons is analyzed. The screened Coulomb interaction allows for the for- mation of Cooper pairs and superconductivity in a significant range of twist angles and fillings. The tendency toward superconductivity is enhanced by the coupling between longitudinal phonons and electron-hole pairs. Scattering processes involving large momentum transfers, Umklapp processes, play a crucial role in the formation of Cooper pairs. The magnitude of the superconducting gap changes among the different pockets of the Fermi surface.
description: 19 pages, 14 figures
Efficient ionization of two dimensional excitons by intense single cycle terahertz pulses
Creators: name: Kamban, Høgni C.
name: Pedersen, Thomas G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: External electric fields are highly attractive for dynamical manipulation of excitons in two-dimensional materials. Here, we theoretically study the ionization of excitons in monolayer transition metal dichalcogenides (TMDs) by intense pulsed electric fields in the terahertz (THz) regime. We find that THz pulses with realistic field strengths are capable of ionizing a significant fraction of photogenerated excitons in TMDs into free charge carriers. Short THz pulses are therefore an efficient, non-invasive method of dynamically controlling the free carrier concentration in monolayer TMDs, which is useful for applications such as THz modulators. We further demonstrate that exciton ionization probabilities should be experimentally measurable by comparing free carrier absorption before and after the THz pulse. Detailed results are provided for different TMDs in various dielectric environments.
The Kodaira dimension of the moduli of K3 surfaces
Creators: name: Gritsenko, V.
name: Hulek, K.
name: Sankaran, G. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14D20, 14J10, 14J15, 14J28, 11F23

description: The moduli space of polarised K3 surfaces of degree 2d is a quasi-projective variety of dimension 19. For general d very little has been known about the Kodaira dimension of these varieties. In this paper we present an almost complete solution to this problem. Our main result says that this moduli space is of general type for d>61 and for d=46,50,54,58,60.
description: 47 pages
The Response of Laser Interferometric Gravitational Wave Detectors Beyond the Eikonal Equation
Creators: name: Mieling, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The response of Michelson interferometers to weak plane gravitational waves is computed at one order of accuracy beyond the eikonal equation. The modulation of the electromagnetic field amplitude and polarisation are taken into account by solving the transport equations of geometrical optics with boundary conditions adapted to laser interferometry. Considering both DC and balanced homodyne readout schemes, explicit formulae for the interferometer output signals are derived. These signals comprise perturbations of the optical path length, frequency and amplitude, and are shown to be insensitive to polarisation perturbations.
description: 40 pages, 6 figures
Giuliano Cesarini e il primo canone di umanisti di Enea Silvio Piccolomini
Creators: name: Iaria, Simona
Publisher: name: Zenodo
Year: 2024
Subjects: Piccolomini Aeneas Silvius
Piccolomini Enea Silvio
Cesarini Giuliano
Traversari Ambrogio
Guarino Veronese
Bruni Leonardo

description: This is the accepted version of the following final article: Giuliano Cesarini e il primo canone di umanisti di Enea Silvio Piccolomini, published in Italia medioevale e umanistica, Volume 64, 2023, Pages 225-254, ISBN: 978-88-15-39086-8

https://www.rivisteweb.it/doi/10.60997/114352

https://doi.org/10.5281/zenodo.13860434

 

 

 
description: This contribution examines the canon of humanists drawn up by Enea Silvio Piccolomini in the letter of dedication for the first description of Basle, sent by him to cardinal Giuliano Cesarini, papal legate and president of the Council. Examination of some passages shows how the choice of the names – Leonardo Bruni, Ambrogio Traversari and Guarino Veronese, alongside whom Cesarini figures – is not just the result of Piccolomini’s cultural interests, but reflects the standing acquired by Cesarini in the humanistic movement, as shown by the works dedicated to him and by the cultural exchanges between the Italian humanists present in Basle. By seeing the dedication in the political context of Florence’s attempt to host the Council it is possible to suggest a new date. Further light is thrown on the reference to Piccolomini’s plan to write a history of the Council.
Determining neutron-capture cross sections via the surrogate reaction technique
Creators: name: Forssen, C.
name: Dietrich, F. S.
name: Escher, J.
name: Hoffman, R. D.
name: Kelley, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Indirect methods play an important role in the determination of nuclear reaction cross sections that are hard to measure directly. In this paper we investigate the feasibility of using the so-called surrogate method to extract neutron-capture cross sections for low energy compound-nuclear reactions in spherical and near-spherical nuclei. We present the surrogate method and develop a statistical nuclear-reaction simulation to explore different approaches to utilize surrogate reaction data. We assess the success of each approach by comparing the extracted cross sections with a predetermined benchmark. In particular, we employ regional systematics of nuclear properties in the 34 <= Z <= 46 region to calculate (n,gamma) cross sections for a series of Zr isotopes, and to simulate a surrogate experiment and the extraction of the desired cross section. We identify one particular approach that may provide very useful estimates of the cross section, and we discuss some of the limitations of the method. General recommendations for future (surrogate) experiments are also given.
description: 17 pages, 9 figures. Accepted for publication in Phys. Rev. C
Μέθοδος CALL: Πλεονεκτήματα και Μειονεκτήματα – Μια Παιδαγωγική Προσέγγιση
Creators: name: Ζαχαριάδου, Βασιλική Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: εκμάθηση γλώσσας
λογισμικό-τεχνικά υποβοηθούμενη εκμάθηση γλώσσας
CALL-computer assisted language learning-software

description: Η προσέγγιση της Computer Assisted Language Learning (ελληνιστί: Τεχνικά Υποβοηθούμενης Γλωσσικής Διδασκαλίας) αποτελεί μία σύγχρονη διαδικασία, η οποία παρουσιάζει πλεονεκτήματα και μειονεκτήματα από παιδαγωγική -και όχι μόνον- σκοπιά. Στον παρόν πόνημα επιχειρήθηκε μία αναλυτική παρουσίαση και σχολιασμός των θετικών και αρνητικών σημείων που διέπουν την εφαρμογή της μεθόδου CALL εντός της σχολικής τάξης, αφού, πρωτίστως, έγινε ιδιαίτερη μνεία στα βασικά χαρακτηριστικά που συγκροτούν την συγκεκριμένη μέθοδο διδασκαλίας μίας δεύτερης/ξένης γλώσσας. Επιπροσθέτως, αναφέρθηκαν και οι επιρροές που δύναται να έχει η CALL σε μαθητές με προσφυγικό/μεταναστευτικό υπόβαθρο, σε μαθητές που αντιμετωπίζουν μαθησιακές δυσκολίες, καθώς και σε Άτομα με Αναπηρία (ΑμεΑ). Τέλος, παρουσιάστηκαν νέα, ακόμη πιο σύγχρονα λογισμικά και μέθοδοι (ορισμένα εκ των οποίων αποτελούν μετεξέλιξη της CALL), όπως η Mobile Assisted Language Use (ελληνιστί: Υποβοηθούμενη από Κινητό Γλωσσική Χρήση), τα οποία μπορούν να καταστήσουν ακόμη πιο εποικοδομητική την γλωσσική διδασκαλία. Συνολικά, υπό το πρίσμα μίας ποιοτικής ανασκόπησης, έχοντας υπ’ όψιν και τους παράγοντες δάσκαλο και μαθητή (το κατά πόσον είναι μυημένοι στη μεθοδολογία της CALL), τα πλεονεκτήματα της CALL φαίνεται πως υπερτερούν έναντι των μειονεκτημάτων, κάτι που καθιστά απαραίτητη την ένταξη της προσέγγισης αυτής (και των παραπλήσιών της) -με μεγαλύτερη έμφαση- στα Αναλυτικά Προγράμματα Σπουδών των εθνικών εκπαιδευτικών συστημάτων περισσότερων ευρωπαϊκών χωρών
description: The approach of Computer Assisted Language Learning is a modern process, presenting advantages and disadvantages from a pedagogical - and not only - perspective. The present thesis attempts to provide a detailed presentation and commentary on the advantages and disadvantages of applying the CALL method within the classroom, with particular emphasis being placed on the key features that constitute the particular method of teaching a second / foreign language. In addition, the impact that CALL may have on students with refugee / migrant backgrounds, on students with learning disabilities, and on People with Disabilities was also mentioned. Finally, we examined new; more modern software and methods which have been introduced lately (some of which are a development of CALL), such as Mobile Assisted Language Use, which can make language teaching even more effective. Overall, in the light of a qualitative review, taking into account both teacher and student factors (whether they are embedded in CALL methodology), the advantages of CALL appear to outweigh the disadvantages, which necessitates the integration of the approach of this (and its similarities) - with greater emphasis - on the Curricula of the national education systems of most European countries
Pulsational Instabilities in Accreting White Dwarfs
Creators: name: Arras, Phil
name: Townsley, Dean M.
name: Bildsten, Lars
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) The Cataclysmic Variable (CV) population harbors a diverse range of donor stars and accreting white dwarfs (WDs). A range of WD masses is expected, from low mass Helium core WDs, to massive WDs which have previously accreted at rates high enough for Hydrogen to burn steadily. Furthermore, a wide range of Helium enrichment is expected in the accreted material depending on the degree to which the donor star is evolved. We investigate the impact of this diversity on the range of effective temperatures ($T_{\rm eff}$) for which g-modes are unstable. The critical $T_{\rm eff}$ below which modes are unstable ("blue edge") depends on both surface gravity, $g$, and He abundance, $Y$. The Hydrogen/first Helium ionization instability strip is more sensitive to $g$ than $Y$. We find that (for solar composition envelopes), relative to a fiducial WD mass $0.6 M_\odot$, the blue edge for a $0.4 M_\odot$ He core WD shifts downward by $\approx 1000 {\rm K}$, while that for a massive $\approx 1.2 M_\odot$ WD shifts upward by $\approx 2000 {\rm K}$. The second Helium ionization instability strip exhibits strong dependences on both $g$ and $Y$. Surprisingly, increasing $Y$ by only 10% relative to solar creates an instability strip near $15,000 {\rm K}$. Hence CV's below the period gap with evolved donor stars of $Y\ga 0.4$ may have an "intermediate" instability strip well outside of the isolated DA and DB variables. This "intermediate" instability strip also occurs for low mass He WD with solar composition envelopes. The lack of pulsations in CV's with $T_{\rm eff}$ in the pure Hydrogen ZZ Ceti instability strip is also easily explained.
description: submitted to ApJL. 3 figures
Linee programmatiche di un censimento delle tragedie cinque-seicentesche
Creators: name: Castorina, Claudia
Publisher: name: Università degli Studi di Messina
Year: 2015

description: We present the guidelines for a census of published and unpublished sixteenth and seventeenth century tragedies,  with the aim of creating a constantly updated database, designed as a working tool for scholars and historians of literature and theatre.




Si presentano le linee programmatiche di un censimento delle tragedie cinque-seicentesche, edite e inedite, con l’obiettivo di realizzare una banca dati continuamente aggiornata, progettata come strumento di lavoro per gli studiosi e gli storici della letteratura e del teatro.
description: Studi giraldiani. Letteratura e teatro, Vol 1 (2015)
Generalised density profiles in single-file systems
Creators: name: Poncet, Alexis
name: Grabsch, Aurélien
name: Illien, Pierre
name: Bénichou, Olivier
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Single-file diffusion refers to the motion in narrow channels of particles which cannot bypass each other. These strong correlations between particles lead to tracer subdiffusion, which has been observed in contexts as varied as transport in porous media, zeolites or confined colloidal suspensions, and theoretically studied in numerous works. Most approaches to this celebrated many-body problem were restricted to the description of the tracer only, whose essential properties, such as large deviation functions or two-time correlation functions, were determined only recently. Here, we go beyond this standard description by introducing and determining analytically generalised density profiles (GDPs) in the frame of the tracer. In addition to controlling the statistical properties of the tracer, these quantities fully characterise the correlations between the tracer position and the bath particles density. Considering the hydrodynamic limit of the problem, we unveil universal scaling properties of the GDPs with space and time, and a non-monotonic dependence with the distance to the tracer despite the absence of any asymmetry. Our analytical approach provides exact results for the GDPs of paradigmatic models of single-file diffusion, such as Brownian particles with hardcore repulsion, the Symmetric Exclusion Process and the Random Average Process. The range of applicability of our approach is further illustrated by considering extensions to general interactions between particles and out-of-equilibrium situations.
Sinks in the Landscape, Boltzmann Brains, and the Cosmological Constant Problem
Creators: name: Linde, Andrei
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper extends the recent investigation of the string theory landscape in hep-th/0605266, where it was found that the decay rate of dS vacua to a collapsing space with a negative vacuum energy can be quite large. The parts of space that experience a decay to a collapsing space, or to a Minkowski vacuum, never return back to dS space. The channels of irreversible vacuum decay serve as sinks for the probability flow. The existence of such sinks is a distinguishing feature of the string theory landscape. We describe relations between several different probability measures for eternal inflation taking into account the existence of the sinks. The local (comoving) description of the inflationary multiverse suffers from the so-called Boltzmann brain (BB) problem unless the probability of the decay to the sinks is sufficiently large. We show that some versions of the global (volume-weighted) description do not have this problem even if one ignores the existence of the sinks. We argue that if the number of different vacua in the landscape is large enough, the anthropic solution of the cosmological constant problem in the string landscape scenario should be valid for a broad class of the probability measures which solve the BB problem. If this is correct, the solution of the cosmological constant problem may be essentially measure-independent. Finally, we describe a simplified approach to the calculations of anthropic probabilities in the landscape, which is less ambitious but also less ambiguous than other methods.
description: 42 pages, 5 figures, the paper is substantially extended, a section on the cosmological constant is addeed; the version published in JCAP
Σχολιασμένη μετάφραση αποσπασμάτων από το μυθιστόρημα Sphinx της Anne F. Garréta
Creators: name: Παπαδόπουλος, Βασίλειος Στυλιανού
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Σχολιασμένη μετάφραση
Μετάφραση μη-γένους
Λογοτεχνική μετάφραση
Annotated Translation
Non-gender Translation
Literary Translation

description: Η παρούσα διπλωματική εργασία αποτελεί σχολιασμένη μετάφραση αποσπασμάτων από το μυθιστόρημα Sphinx της Anne F. Garréta, από τα γαλλικά στα ελληνικά. Σκοπός της είναι να παρουσιαστεί το έργο της Anne Garréta, η γλώσσα του μυθιστορήματος και εμπόδιο που θέτει σχετικά με την απόκρυψη του φύλου των πρωταγωνιστών. Αναλύονται οι μεταφραστικές πρακτικές που ακολουθήθηκαν και ο τρόπος που αντιμετωπίστηκαν τα μεταφραστικά προβλήματα που προέκυψαν. Τέλος, η διπλωματική αυτή εργασία θέτει το ζήτημα του μη-γένους και την πρακτική εφαρμογή του στην ελληνική γλώσσα, ως μελλοντικό ζητούμενο
description: The present thesis is an annotated translation, from French to Greek, of specific chapters from the novel “Sphinx”, by Anne F. Garréta. It aims to present the works of Anne Garréta in general, to describe the language of the novel, and the constraint created by the author in order to obfuscate the gender of the main characters. Throughout the thesis, our translation practices are analyzed, as long as the methods that were used to deal with the translation difficulties. Finally, this thesis poses the question of non-gender and it’ s realistic application in the Greek language as a future demand
Le edizioni cinquecentesche della Poetica di Aristotele in Italia: un progetto di censimento
Creators: name: Ricco, Renato
Publisher: name: Università degli Studi di Messina
Year: 2015

description: The paper discusses the guidelines for the census of the Italian editions and commentaries of Aristotle's Poetics in the sixteenth century; this research involves multiple perspectives of investigation, not only exploring  the tradition of the text and also its reception, following  a threefold perspective (literary and dramaturgical, aesthetic and philoso-phical and even socio-historical).




Il saggio illustra le linee programmatiche del censimento delle edizioni e dei commenti italiani della Poetica aristotelica nel XVI secolo; lavoro che implica molteplici prospettive d’indagine, non solo sul versante della tradizione del testo, ma anche della sua fortuna e delle  modalità di ricezione (sul piano letterario e drammaturgico, estetico-filosofico e storico-sociale).
description: Studi giraldiani. Letteratura e teatro, Vol 1 (2015)
Global First Laws of Accelerating Black Holes
Creators: name: Ball, Adam
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We generalize the first law of black hole mechanics to the rotating, charged C-metric and to the Ernst metric, both of which have the charged C-metric as a special case. All of these metrics are (3+1)-dimensional, have vanishing cosmological constant, and physically describe a pair of black holes pulled apart to null infinity by some external force. Our first laws are global in the sense of applying to an entire patch of spacetime, as opposed to a neighborhood of the black hole. They are formulated with respect to "boost time", whose primacy is motivated by the celestial holographic approach to scattering amplitudes.
description: Made clarifications and expanded conclusion
Nonlinear estimation for linear inverse problems with error in the operator
Creators: name: Hoffmann, Marc
name: Reiss, Markus
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 65J20, 62G07 (Primary)

description: We study two nonlinear methods for statistical linear inverse problems when the operator is not known. The two constructions combine Galerkin regularization and wavelet thresholding. Their performances depend on the underlying structure of the operator, quantified by an index of sparsity. We prove their rate-optimality and adaptivity properties over Besov classes.
description: Published in at http://dx.doi.org/10.1214/009053607000000721 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Do biological constraints impair dendritic computation?
Creators: name: Jones, Ilenna Simone
name: Kording, Konrad Paul
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Computations on the dendritic trees of neurons have important constraints. Voltage dependent conductances in dendrites are not similar to arbitrary direct-current generation, they are the basis for dendritic nonlinearities and they do not allow converting positive currents into negative currents. While it has been speculated that the dendritic tree of a neuron can be seen as a multi-layer neural network and it has been shown that such an architecture could be computationally strong, we do not know if that computational strength is preserved under these biological constraints. Here we simulate models of dendritic computation with and without these constraints. We find that dendritic model performance on interesting machine learning tasks is not hurt by these constraints but may benefit from them. Our results suggest that single real dendritic trees may be able to learn a surprisingly broad range of tasks.
description: 36 pages, 12 figures
Bibliografia giraldiana
Creators: name: Romera Pintor, Irene
Publisher: name: Università degli Studi di Messina
Year: 2015

description: We provide here, as work in progress, a complete biography of Giraldi, updated to 2015 and structured in well-defined and functional sections.




Si presenta, come work in progress, una completa bibliografia giraldiana, aggiornata al 2015 e suddivisa in precise e funzionali sezioni.
description: Studi giraldiani. Letteratura e teatro, Vol 1 (2015)
Dynamical systems on infinitely sheeted Riemann surfaces
Creators: name: Fedorov, Yuri N.
name: Gomez-Ullate, David
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: This paper is part of a program that aims to understand the connection between the emergence of chaotic behaviour in dynamical systems in relation with the multi-valuedness of the solutions as functions of complex time $τ$. In this work we consider a family of systems whose solutions can be expressed as the inversion of a single hyperelliptic integral. The associated Riemann surface ${\mathcal R}$ is known to be an infinitely sheeted covering of the complex time plane, ramified at an infinite set of points whose projection in the $τ$-plane is dense. The main novelty of this paper is that the geometrical structure of these infinitely sheeted Riemann surfaces is described in great detail, which allows to study global properties of the flow such as asymptotic behaviour of the solutions, periodic orbits and their stability or sensitive dependence on initial conditions. The results are then compared with a numerical integration of the equations of motion. Following the recent approach of Calogero, the real time trajectories of the system are given by paths on $\mathcal R$ that are projected to a circle on the complex plane $τ$. Due to the branching of $\mathcal R$, the solutions may have different periods or may not be periodic at all.
Leveraging machine learning and open-source spatial datasets to enhance flood susceptibility mapping in transboundary river basin
Creators: name: Bhattarai, Yogesh
name: Duwal, Sunil
name: Sharma, Sanjib
name: Talchabhadel, Rocky
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Science Policy
subject: Plant Biology
subject: FOS: Biological sciences

description: Floods pose devastating effects on the resiliency of human and natural systems. flood risk management challenges are typically complicated in the transboundary river basin due to conflicting objectives between multiple countries, lack of systematic approaches to data monitoring and sharing, and limited collaboration in developing a unified system for hazard prediction and communication. An open-source, low-cost modeling framework that integrates open-source data and models can help improve our understanding of flood susceptibility and inform the design of equitable risk management strategies. This study integrates open-source datasets and machine -learning techniques to quantify flood susceptibility across the data-scare transboundary basin. The analysis focuses on the transboundary Gandak River Basin, spanning China, Nepal, and India, where damaging and recurring floods pose serious concern. flood susceptibility is assessed using four widely used machine learning techniques: Long-Short-Term-Memory, Random Forest, Artificial Neural Network, and Support Vector Machine. Our results exhibit the improved performance of Artificial Neural Network and Support Vector Machine in predicting flood susceptibility maps, revealing higher vulnerability in the southern plains. This study demonstrates that remote sensing and machine learning can improve flood prediction, hazard mapping, and susceptibility analysis in a data-scare environment.
Le più antiche biografie giraldiane
Creators: name: Villari, Susanna
Publisher: name: Università degli Studi di Messina
Year: 2015

description: The only two sixteenth century profiles of Giraldi’s life written by Luca Contile and Girolamo Giovannini are here presented for the first time in a modern edition, with exegetic notes and an introduction. Despite some unreliable information, such profiles give the chance to observe usually backgrounded moments and aspects of Giraldi’s culture without the intervention of modern criticism, which is based on documents and letters. Particular emphasis, for example, is given to the writer’s participation in the Accademia Pavese degli Affidati as Cinthio and the emblem (rich in philosophical meanings) of the upturned tree.




Si propongono per la prima volta, in edizione moderna, con un corredo di note esegetiche e di un’introduzione, gli unici due profili cinquecenteschi della vita giraldiana, ad opera di Luca Contile e Girolamo Giovannini. Nonostante qualche informazione inattendibile, tali profili offrono l’occasione per osservare, senza il filtro delle ricostruzioni critiche moderne (fondate su documenti e carteggi), momenti e aspetti della vita e della cultura di Giraldi di solito lasciati in ombra. Rilievo particolare è dato, ad esempio, alla partecipazione dello scrittore all’Accademia pavese degli Affidati, con il soprannome di Cinthio e l’emblema (denso di significati filosofici) dell’albero capovolto.
description: Studi giraldiani. Letteratura e teatro, Vol 1 (2015)
Thermo-reversible permanent magnets in the quasi-binary GdCo5-xCux system
Creators: name: Grechishkin, Rostislav M.
name: Kustov, Mikhail S.
name: Cugat, Orphee
name: Delamare, Jerome
name: Poulin, Guylaine
name: Mavrudieva, Diana
name: Dempsey, Nora M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferrimagnetic GdCo5-xCux alloys exhibiting the effect of Gd- and 3d-sublattice magnetization compensation at defined temperatures were studied with respect to their use as thermo-reversible permanent magnets (PM). Coercive fields 0Hc in the range 0.3 to 1.6 T were measured for annealed single crystals with x = 1 - 2.2 having compensation points in the vicinity of room temperature. Two applications of such a thermo-reversible PM, namely a thermally controlled actuator and a contactless temperature sensor, are demonstrated.
Revenue management in airline companies. The case of American Airlines
Creators: name: Μπάνκωβ, Τσβετάν Μπόικο (Tsvetan Bankov)
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: διαχείριση κερδών
αεροπορικές εταιρείες
American airlines
revenue management
airline companies

description: Στην παρούσα έρευνα μελετάται η διαχείριση κερδών (revenue management). Στόχος της έρευνας αποτελεί η μελέτη της πρακτικής αυτής, καθώς παρουσιάζεται ο ορισμός, μία ιστορική αναδρομή, και οι παράμετροι της εφαρμογής της, στις αεροπορικές εταιρείες. Στο δεύτερο σκέλος της εργασίας, παρουσιάζεται μία πρακτική μελέτη περίπτωσης, κάνοντας χρήση ενός μοντέλου γραμμικού προγραμματισμού και παίρνοντας ως παράδειγμα τη μεγαλύτερη αεροπορική εταιρεία παγκοσμίως, American Airlines. Τα στοιχεία της έρευνας έχουν αντληθεί από υπάρχουσα βιβλιογραφία, ενώ για το μοντέλο γραμμικού προγραμματισμού έχουν ληφθεί πραγματικά στοιχεία και αριθμοί, όπως η χωρητικότητα των αεροσκαφών και αεροδρόμια-βάσεις της επιχείρησης, μεταξύ άλλων. Τέλος, παρουσιάζονται χρήσιμα συμπεράσματα για τη διαχείριση κερδών, καθώς και προτάσεις για περαιτέρω μελέτη
description: This research deals with revenue management. It aims to study the practice of revenue management, as it presents its definition, the historical background and the parameters of its application to the airline industry. The second part of the research presents a case study, using a linear programming model and having as an example the world’s largest airline company, American Airlines. The data for this research has been sourced from existing bibliography, while the linear programming model has been compiled using real data, such as aircraft capacity and the main hubs of the company. Finally, useful conclusions are presented as well as further
Superposed metric for spinning black hole binaries approaching merger
Creators: name: Combi, Luciano
name: Armengol, Federico G. Lopez
name: Campanelli, Manuela
name: Ireland, Brennan
name: Noble, Scott C.
name: Nakano, Hiroyuki
name: Bowen, Dennis
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct an approximate metric that represents the spacetime of spinning binary black holes (BBH) approaching merger. We build the metric as an analytical superposition of two Kerr metrics in harmonic coordinates, where we transform each black hole term with time-dependent boosts describing an inspiral trajectory. The velocities and trajectories of the boost are obtained by solving the post-Newtonian (PN) equations of motion at 3.5 PN order. We analyze the spacetime scalars of the new metric and we show that it is an accurate approximation of Einstein's field equations in vacuum for a BBH system in the inspiral regime. Furthermore, to prove the effectiveness of our approach, we test the metric in the context of a 3D general relativistic magneto-hydrodynamical (GRMHD) simulation of accreting mini-disks around the black holes. We compare our results with a previous well-tested spacetime construction based on the asymptotic matching method. We conclude that our new spacetime is well-suited for long-term GRMHD simulations of spinning binary black holes on their way to the merger.
description: Accepted for publication in Physical Review D
Design and Implementation of a Resampling Circuit - Real-Time Arbitrary Selection of Sample Rate
Creators: name: Ζαχαρέλος, Ευστράτιος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ψηφιακό κύκλωμα
Επαναδειγματοληψία
Πραγματικός χρόνος
Digital Circuit
Resampling
Real-time

description: Σε αυτήν την εργασία, παρουσιάζεται ο σχεδιασμός και η υλοποίηση ενός ψηφιακού συστήματος, το οποίο επιτρέπει την σχεδόν αυθαίρετη επιλογή του ρυθμού δειγματοληψίας. Στην είσοδο του συστήματος εφαρμόζεται ένα ψηφιακό σήμα και ένα σήμα, με νέο ρυθμό δειγματοληψίας, λαμβάνεται στην έξοδο του συστήματος. Το προτεινόμενο σύστημα βασίζεται σε μια κατάλληλη στρατηγική διαχείρισης μνήμης και σε ένα ψηφιακό φίλτρο, με δυναμικά παραγόμενες σταθερές. Αποτελεί μια εναλλακτική λύση, στη χρήση των εξωτερικών ρολογιών, τα οποία λόγω του περιορισμού στο bandwidth του εξωτερικού μονοπατιού, μπορούν πρακτικά να χρησιμοποιηθούν για να ελέγξουν το ρυθμό δειγματοληψίας μόνο για ένα περιορισμένο κομμάτι του συνολικού εύρους. Στο προτεινόμενο σύστημα, ο χρήστης έχει τη δυνατότητα να επιλέξει το νέο ρυθμό δειγματοληψίας που επιθυμεί, σε πραγματικό χρόνο, μεταξύ 50% και περίπου 100% του αρχικού ρυθμού δειγματοληψίας. Η ευέλικτη επιλογή του ρυθμού δειγματοληψίας, επιτρέπει την καλύτερη χρήση των πόρων του συστήματος (μνήμη), εφόσον παρέχεται ο κατάλληλος ρυθμός δειγματοληψίας ανάλογα με την εκάστοτε εφαρμογή. Αλλαγές στο ρυθμό δειγματοληψίας μπορούν να επιτευχθούν με τεχνικές ψηφιακής επαναδειγματοληψίας αλλά η απαιτούμενη επεξεργαστική ισχύς και η ανάγκη για ειδικό κύκλωμα για κάθε ρυθμό δειγματοληψίας, καθιστούν αυτήν την επιλογή μη εφικτή. Το σύστημα σχεδιάζεται χρησιμοποιώντας μία γλώσσα περιγραφής υλικού (HDL) για την περιγραφή του κυκλώματος, και υλοποιείται σε ένα FPGA (Συστοιχία Επιτόπια Προγραμματιζόμενων Πυλών)
description: In this project, the design and implementation of a time base digital system that allows almost arbitrary selection of the sample rate, in real time, is presented. A digital signal is applied at the input of the system and a resampled signal, is obtained from the output of the system. The proposed solution relies on a suitable memory management strategy and a short digital filter with dynamically generated coefficients. It represents an alternative to the use of external clocks, which due to the bandwidth restriction of the external path, can be effectively employed to control the sample rate only on a limited portion of the whole range. In the proposed system, the user is free to choose a resampling rate, in real time, between 50% and approximately 100% of the initial sampling rate. Flexible sample rate selection, allows more efficient usage of memory resources, by allowing the exact sampling rate needed for any given application. Sample rate changes can be accomplished through digital resampling approaches but the required processing power and the need of dedicated circuitry for each sampling rate makes this choice unfeasible. The system is designed, using a Hardware Description Language (HDL) for the description of the circuit and it is implemented on an FPGA (Field Programmable Gate Array) demo board
Francesco Bausi, Il «Principe» dallo scrittoio alla stampa, Pisa, Edizioni della Normale, 2015, pp. 138
Creators: name: Grazzini, Filippo
Publisher: name: Università degli Studi di Messina
Year: 2015

description: ..
description: Studi giraldiani. Letteratura e teatro, Vol 1 (2015)
A Spectroscopic Survey of Redshift 1.4
Creators: name: Reddy, Naveen A.
name: Steidel, Charles C.
name: Erb, Dawn K.
name: Shapley, Alice E.
name: Pettini, Max
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a spectroscopic survey with the Keck I telescope of more than 280 star-forming galaxies and AGN at redshifts 1.41.4 in GOODS-N. Extensive multi-wavelength data allow us to investigate the stellar populations, stellar masses, bolometric luminosities (L_bol), and extinction of z~2 galaxies. Deep Chandra and Spitzer data indicate that the sample includes galaxies with a wide range in L_bol, from 10^10 L_sun to >10^12 L_sun, and covering 4 orders of magnitude in dust obscuration (L_bol/L_UV). The sample includes galaxies with a large dynamic range in evolutionary state, from very young galaxies (ages <50 Myr) with small stellar masses (M* ~ 10^9 M_sun) to evolved galaxies (ages >2 Gyr) with stellar masses comparable to the most massive galaxies at these redshifts (M* > 10^11 M_sun). Spitzer data indicate that the optical sample includes some fraction of the obscured AGN population at high redshifts: at least 3 of 11 AGN in the z>1.4 sample are undetected in the deep X-ray data but exhibit power-law SEDs longward of ~2 micron (rest-frame) indicative of obscured AGN. The results of our survey indicate that rest-frame UV selection and spectroscopy presently constitute the most time-wise efficient method of culling large samples of high redshift galaxies with a wide range in intrinsic properties, and the data presented here will add significantly to the multi-wavelength legacy of the GOODS survey. [Abridged]
description: 25 pages, 5 figures, 5 tables; accepted for publication in ApJ
Alberto Asor Rosa, Letteratura italiana. La storia, i classici, l’identità nazionale, Roma, Carocci editore, 2014, pp. 256
Creators: name: Mancini, Maria Benedetta
Publisher: name: Università degli Studi di Messina
Year: 2015

description: no abstract
description: Studi giraldiani. Letteratura e teatro, Vol 1 (2015)
Προστασία του περιβάλλοντος. Τριτενέργεια του δικαιώματος και στο πλαίσιο της θεωρίας της διακινδύνευσης
Creators: name: Φουντουκίδου-Λουκά, Γεωργία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Περιβάλλον
Τριτενέργεια
Διακινδύνευση
Environment
Third Party Effect
Risk

description: Είναι αδιαμφισβήτητο γεγονός ότι θέματα που είναι σχετικά με την προστασία του περιβάλλοντος χαρακτηρίζονται από μια ολοένα και μεγαλύτερη θεματική διεύρυνση. Η διεύρυνση αυτή πλέον επιβάλλεται να καταστεί πολύ μεγαλύτερη από τη μέχρι πρότινος για να ενσωματώσει νέους τομείς όπως είναι ο τομέας της τριτενέργειας ή ο τομέας της θεωρίας της διακινδύνευσης. Μία τέτοια διεύρυνση επιχειρείται στην προκείμενη εργασία, όπου αφενός μεν διευρύνεται το θέμα της προστασίας του περιβάλλοντος στο πλαίσιο του δημοσίου δικαίου στο μεγαλύτερο δυνατό βαθμό, αφετέρου δε η διεύρυνση λαμβάνει χώρα και σε άλλα ευρύτερα πεδία πλην αυτού του δημοσίου δικαίου, όπως είναι ο χώρος του ιδιωτικού δικαίου μέσω της τριτενέργειας, αλλά και ο χώρος της σύγχρονης θεωρίας της διακινδύνευσης
description: It is an indisputable fact that environmental protection issues are increasingly subject to enlargement. This enlargement must now be made much wider than it was before so as to incorporate new areas such as the Third Party Effect or Risk Theory. Such an extension is attempted in the present work. On the one hand, the issue of environmental protection in the context of public law is broadened as much as possible, and on the other hand, enlargement takes place in areas other than public law, such as private law through the Third Party Effect theory, but also the field of modern Risk Theory
Jet Breaks in Short Gamma-Ray Bursts. II: The Collimated Afterglow of GRB 051221A
Creators: name: Burrows, David N.
name: Grupe, Dirk
name: Capalbi, Milvia
name: Panaitescu, Alin
name: Patel, Sandeep K.
name: Kouveliotou, Chryssa
name: Zhang, Bing
name: Meszaros, Peter
name: Chincarini, Guido
name: Gehrels, N.
name: Wijers, Ralph A. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the best evidence to date of a jet break in a short Gamma-Ray Burst (GRB) afterglow, using Chandra and Swift XRT observations of the X-ray afterglow of GRB 051221A. The combined X-ray light curve, which has three breaks, is similar to those commonly observed in Swift observations of long GRBs. A flat segment of the light curve at ~0.1 days after the burst represents the first clear case of strong energy injection in the external shock of a short GRB afterglow. The last break occurs at ~4 days post-burst and breaks to a power-law decay index of ~2. We interpret this as a jet break, with important implications for models of short GRBs, since it requires collimation of the afterglow into a jet with an initial opening angle ~4-8 degrees and implies a total jet kinetic energy of E_jet ~(1-5) x 10^{49} erg. Combined with the lack of a jet break in GRB 050724, this suggests a wide range in jet collimation in short GRBs, with at least some having collimation similar to that found in long GRBs, though with significantly lower jet energies.
description: 10 pages, 4 figures. Submitted to The Astrophysical Journal 13 April 2006, accepted 7 August 2006. This revision is the accepted version
Coherent energy exchange between carriers and phonons in Peierls-distorted bismuth unveiled by broadband XUV pulses
Creators: name: Géneaux, Romain
name: Timrov, Iurii
name: Kaplan, Christopher J.
name: Ross, Andrew D.
name: Kraus, Peter M.
name: Leone, Stephen R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In Peierls-distorted materials, photoexcitation leads to a strongly coupled transient response between structural and electronic degrees of freedom, always measured independently of each other. Here we use transient reflectivity in the extreme ultraviolet to quantify both responses in photoexcited bismuth in a single measurement. With the help of first-principles calculations based on density-functional theory (DFT) and time-dependent DFT, the real-space atomic motion and the temperature of both electrons and holes as a function of time are captured simultaneously, retrieving an anticorrelation between the $A_{1g}$ phonon dynamics and carrier temperature. The results reveal a coherent, bi-directional energy exchange between carriers and phonons, which is a dynamical counterpart of the static Peierls-Jones distortion, providing first-time validation of previous theoretical predictions.
Granites and related rocks of the Lachlan Fold Belt
Creators: name: Chappell, B.W.
name: English, P.
name: King, R.L.
name: White, A.J.R.
name: Wyborn, D.
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 1991
Subjects: subject: Geological Map
subject: Non-standard scale
subject: geology
subject: AU-NSW
subject: AU-TAS
subject: AU-VIC
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Published_External

description: Related product to Geoscience Australia record 1990/048
Cross-platform evaluation of an LCMV Beamformer for multi-Site MEG analysis
Creators: name: Nugent, Allison C
name: Carver, Frederick
name: Holroyd, Tom
name: Namyst, Anna M
name: Flick, Graham
name: Pylkkanen, Liina
name: Marantz, Alec
name: Stout, Jeffrey D
Publisher: name: F1000 Research Limited
Year: 2024

description: This poster presents an evaluation of an LCMV beamformer algorithm across multiple MEG imaging vendors utilizing different processing parameters.
Per l'edizione critica del carme De usu partium corporis humani di Giovan Battista Giraldi Cinzio
Creators: name: Ricco, Renato
Publisher: name: Università degli Studi di Messina
Year: 2015

description: The critical edition of the Latin poem De usu partium corporis humani - of which we have a partial autograph draft (Ferrara, Biblioteca Comunale Ariostea, Cl. 370, cc. 11) and an incomplete printed edition (Cynthii Ioannis Baptistae Gyraldi Poematia, Basileae, printed by Robertum Winter, 1540, pp. 183-197) – explores the strand of investigation, little researched so far, of the medical career of Giraldi Cinzio, in the context of the renowned Renaissance medical school in Ferrara.




Il progetto di edizione del carme latino De usu partium corporis humani – di cui si dispone di una parziale redazione autografa (Ferrara, Biblioteca Comunale Ariostea, Cl. 370, cc. 11) e di una incompleta edizione a stampa (CYNTHII IOANNIS BAPTISTAE GYRALDI, Poematia, Basileae, per Robertum Winter, 1540, pp. 183-197) – si inserisce nel filone d’indagine, sinora poco esplorato, relativo alla carriera medica di Giraldi Cinzio nel contesto della rinomata scuola medica rinascimentale ferrarese.
description: Studi giraldiani. Letteratura e teatro, Vol 1 (2015)
Overview of Antikaon-Nuclear Theory and Phenomenology
Creators: name: Gal, Avraham
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Experimental evidence for antikaon-nuclear quasibound states is briefly reviewed. Theoretical and phenomenological arguments for and against deep antikaon-nucleus potentials which might allow for narrow quasibound states are reviewed, with recent calculations suggesting widths larger than 100 MeV for binding energy smaller than 100 MeV. Results of RMF calculations that provide a lower limit of 50+/-10 MeV for the width of deeply bound states are discussed.
description: Invited talk at the Yukawa International Symposium on New Frontiers in QCD, Kyoto University, December 2006. To be published in Progress of Theoretical Physics Supplement
L'«Ercole al bivio» di Domenico Beccafumi (1486-1551) e l'Ercole giraldiano
Creators: name: Villari, Susanna
Publisher: name: Università degli Studi di Messina
Year: 2015

description: Starting from the analysis of a painting by Domenico Beccafumi, this paper reconstructs the different figurative and literary forms of the myth of “Hercules prodicio” and brings into focus the complex allegorical meanings and remarkable philosophical and ideological implications of the image of “bivio erculeo” (i.e. Hercules choice). Such examination will be provided as a guide for interpretation to frame the contents of Giraldi’s Ercole in a new perspective, highlighting the innermost relations in his pedagogic project and the cognitive values conveyed by the myth.




Partendo dall’analisi di un dipinto di Domenico Beccafumi, il saggio ricostruisce le varie forme, figurative e letterarie, del mito dell’“Ercole prodicio” e mette a fuoco i complessi significati allegorici e le notevoli implicazioni filosofiche e ideologiche dell’immagine del “bivio erculeo”. Tale excursus si offre come chiave di lettura per inquadrare in una rinnovata prospettiva i contenuti dell’Ercole di Giraldi, evidenziando le intime connessioni tra il suo progetto pedagogico e i valori conoscitivi veicolati dal mito.
description: Studi giraldiani. Letteratura e teatro, Vol 1 (2015)