cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Estimating the Accuracy of the Return on Investment (ROI) Performance Evaluations
Creators: name: Botchkarev, Alexei
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Return on Investment (ROI) is one of the most popular performance measurement and evaluation metrics. ROI analysis (when applied correctly) is a powerful tool in comparing solutions and making informed decisions on the acquisitions of information systems. The ROI sensitivity to error is a natural thought, and common sense suggests that ROI evaluations cannot be absolutely accurate. However, literature review revealed that in most publications and analyst firms reports, this issue is just overlooked. On the one hand, the results of the ROI calculations are implied to be produced with a mathematical rigor, possibility of errors is not mentioned and amount of errors is not estimated. On the contrary, another approach claims ROI evaluations to be absolutely inaccurate because, in view of their authors, future benefits (especially, intangible) cannot be estimated within any reasonable boundaries. The purpose of this study is to provide a systematic research of the accuracy of the ROI evaluations in the context of the information systems implementations. The main contribution of the study is that this is the first systematic effort to evaluate ROI accuracy. Analytical expressions have been derived for estimating errors of the ROI evaluations. Results of the Monte Carlo simulation will help practitioners in making informed decisions based on explicitly stated factors influencing the ROI uncertainties. The results of this research are intended for researchers in information systems, technology solutions and business management, and also for information specialists, project managers, program managers, technology directors, and information systems evaluators. Most results are applicable to ROI evaluations in a wider subject area.
Differential N-players game: Nash equilibria and Mather measures
Creators: name: Mendico, Cristian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study Nash equilibria for the deterministic ergodic N-players game. We introduce pure strategies, mixed strategies and Nash equilibria associated with those. We show that a Nash equilibrium in mixed strategies exists and it is a Mather measure for the Lagrangian system defined by the cost functional. In conclusion, we show that the mean field limit of the N-players game is described by the ergodic PDE's system for a continuum of players.
Towards fully quantum second laws of thermodynamics: limitations on the evolution of quantum coherences
Creators: name: Ćwikliński, Piotr
name: Studziński, Michał
name: Horodecki, Michał
name: Oppenheim, Jonathan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The second law of thermodynamics places a limitation into which states a system can evolve into. For systems in contact with a heat bath, it can be combined with the law of energy conservation, and it says that a system can only evolve into another if the free energy goes down. Recently, it's been shown that there are actually many second laws, and that it is only for large macroscopic systems that they all become equivalent to the ordinary one. These additional second laws also hold for quantum systems, and are, in fact, often more relevant in this regime. They place a restriction on how the probabilities of energy levels can evolve. Here, we consider additional restrictions on how the coherences between energy levels can evolve. Coherences can only go down, and we provide a set of restrictions which limit the extent to which they can be maintained. We find that coherences over energy levels must decay at rates that are suitably adapted to the transition rates between energy levels. We show that the limitations are matched in the case of a single qubit, in which case we obtain the full characterization of state-to-state transformations. For higher dimensions, we conjecture that more severe constraints exist. We also introduce a new class of thermodynamical operations which allow for greater manipulation of coherences and study its power with respect to a class of operations known as thermal operations.
description: New title, new results, greatly rewritten version, closed to the published version
BL Lacertae, il blazar con il getto sinuoso
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2022

Il Whole Earth Blazar Telescope, una collaborazione di astronomi di cui fanno parte ricercatrici e ricercatori dell’Inaf, ha scoperto che la radiazione del getto del blazar mostra forti oscillazioni cicliche di luminosità nell’arco di alcune ore. Secondo il team, ciò è dovuto al fatto che il getto non è esattamente rettilineo: presenta una piega a una distanza di circa 16 anni luce dal buco nero che ha deviato ritmicamente il potentissimo flusso di radiazione verso di noi
Curves in characteristic 2 with non-trivial 2-torsion
Creators: name: Castryck, Wouter
name: Streng, Marco
name: Testa, Damiano
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Cais, Ellenberg and Zureick-Brown recently observed that over finite fields of characteristic two, all sufficiently general smooth plane projective curves of a given odd degree admit a non-trivial rational 2-torsion point on their Jacobian. We extend their observation to curves given by Laurent polynomials with a fixed Newton polygon, provided that the polygon satisfies a certain combinatorial property. We also show that in each of these cases, the sufficiently general condition is implied by being ordinary. Our treatment includes many classical families, such as hyperelliptic curves of odd genus and $C_{a,b}$ curves. In the hyperelliptic case, we provide alternative proofs using an explicit description of the 2-torsion subgroup.
Gialla come Betelgeuse
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2022

Passando al vaglio numerose testimonianze di studiosi dell’antichità, un team multidisciplinare guidato dall’università tedesca di Jena, e del quale fa parte anche lo storico Matteo Cosci della Ca’ Foscari di Venezia, ha scoperto che l’inquieta supergigante rossa della costellazione di Orione ha cambiato colore nel corso degli ultimi duemila anni. Pubblicato su Mnras, il risultato offre indizi utili anche per prevederne l’evoluzione
Aurore protoniche “a chiazze” nel cielo di Marte
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2022

La collaborazione fra la sonda Maven della Nasa e quella della Emirates Mars Mission (Emm) degli Emirati Arabi Uniti ha consentito di vedere, sull’atmosfera di Marte, un particolare tipo di aurore che si formano in condizioni di interazione caotica fra il vento solare e l’atmosfera superiore marziana
Machine Learning in Resource-constrained Devices: Algorithms, Strategies, and Applications
Creators: name: RAGUSA, EDOARDO
Publisher: name: Universit� degli studi di Genova
Year: 2019

description: The ever-increasing growth of technologies is changing people's everyday life. As a major consequence: 1) the amount of available data is growing and 2) several applications rely on battery supplied devices that are required to process data in real time. In this scenario the need for ad-hoc strategies for the development of low-power and low-latency intelligent systems capable of learning inductive rules from data using a modest mount of computational resources is becoming vital. At the same time, one needs to develop specic methodologies to manage complex patterns such as text and images. This Thesis presents different approaches and techniques for the development of fast learning models explicitly designed to be hosted on embedded systems. The proposed methods proved able to achieve state-of-the-art performances in term of the trade-off between generalization capabilities and area requirements when implemented in low-cost digital devices. In addition, advanced strategies for ecient sentiment analysis in text and images are proposed.
De Gasparis, re degli asteroidi nella Napoli dell’800
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2022

Ritrovata da Mauro Gargano dell’Istituto nazionale di astrofisica, durante una serie di ricerche alla Biblioteca nazionale di Napoli, la lettera di John Herschel che “incorona” lo scienziato Annibale de Gasparis – precario ante litteram dell'Osservatorio astronomico di Napoli – come il più prolifico scopritore di pianeti dell’Ottocento
Prima vista in 3D di un sistema planetario binario
Creators: Federico Di Giacomo
Publisher: name: Media Inaf
Year: 2022

Utilizzando i radiotelescopi della rete Vlba, un gruppo di astronomi è riuscito a determinare per la prima volta la struttura tridimensionale delle orbite del sistema Gj 896AB, formato da una coppia di stelle e da un pianeta in orbita attorno a una di esse. Un risultato unico e di estrema importanza, in quanto fornirà nuove e preziose informazioni sui processi di formazione dei sistemi planetari
Artemis, probabilmente si lancerà in autunno
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2022

La partenza per la Luna slitta ancora. Dopo il "no go" di sabato scorso, dovuto a una perdita registrata nella linea di rifornimento dell’idrogeno liquido, il razzo dovrà tornare al Vab, il Vehicle Assembly Building, rendendo quindi improbabile un nuovo tentativo prima della fine settembre, ma più probabilmente nella seconda metà di ottobre
Weak solutions to the complex Monge-Ampère equation on Hermitian manifolds
Creators: name: Kolodziej, Slawomir
name: Cuong, Nguyen Ngoc
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: The main result asserts the existence of continuous solutions of the complex Monge-Ampère equation with the right hand side in $L^p, p>1$, on compact Hermitian manifolds.
description: 18 pages; minor corrections due to the referee report; final version to appear in Contemp. Math
Dieci anni dopo Franco Pacini e Paolo Rossi
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2022

Giovedì 8 settembre 2022, a Palazzo Vecchio, l’Inaf di Arcetri e l’Università di Firenze dedicano un evento celebrativo – a dieci anni dalla loro scomparsa – all‘astrofisico Franco Pacini e allo storico della scienza Paolo Rossi, figure di spicco nel panorama culturale e scientifico fiorentino, nazionale e internazionale
Higher dimensional non standard eigenvalue asymptotics
Creators: name: Rautenberg, Nils
name: Camus, Brice
Publisher: name: arXiv
Year: 2014
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this article we extend B. Simon's construction and results for leading order eigenvalue asymptotics to $n$-dimensional Schrödinger operators with non-confining potentials given by: $H^α_n=-Δ+\prod\limits_{i=1}^n |x_i|^{α_i}$ on $\mathbb{R}^n$ ($n>2$), $α:=(α_1,\cdots,α_n)\in (\mathbb{R}_{+}^*)^n$. We apply the results to also derive the leading order spectral asymptotics in the case of the Dirchlet Laplacian $-Δ^D$ on domains $Ω^α_n=\{x\in\mathbb{R}^n: \prod\limits_{j=1}^n |x_j|^{\frac{α_j}{α_n}}<1 \}$. keywords : Trace formulae; Schrödinger operators; Singular asymptotics.
description: Revised an Published Version
Gold/graphene fractals as tunable plasmonic devices
Creators: name: PUTHIYA PURAYIL, NIKHIL SANTH
Publisher: name: Universit� degli studi di Genova
Year: 2018

description: Graphene, an atomically thin sheet of carbon atoms arranged in a honeycomb geometry, is attracting unique attention thanks to its extraordinary mechanical, electrical and optical properties. This thesis work concerns the realization of graphene-based nanoscale devices for novel plasmonic applications. We focus mainly on gold/graphene (Au/G) structures designed to display plasmonic multiresonances in the visible range thanks to the nanostructure geometry based on the Sierpinski carpet (SC) deterministic fractal.
Mutazioni genetiche associate alle missioni spaziali
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2022

Le missioni spaziali sottopongono il Dna gli astronauti a un maggior rischio di mutazioni, aumentando la probabilità che sviluppino neoplasie e malattie cardiache nel corso della vita: sono i risultati di un nuovo studio, condotto su campioni di sangue di 14 astronauti, pubblicato di recente sulla rivista Communications Biology
Rottenburger Jahrbuch für Kirchengeschichte, Band 37, Inhaltsverzeichnis
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
title: Εντοπισμός και παρακολούθηση επιπλεόντων υπολειμμάτων βιομηχανικών εγκαταστάσεων από ατυχήματα στη θάλασσα με δορυφορικές εικόνες
Creators: name: Κοντζογλου Χρηστος
Publisher: name: Technical University of Crete
Year: 2022

description:  Η κινητικότητα των πλαστικών ρύπων στις θαλάσσιες και παράκτιες περιοχές, σε συνδυασμό με την αυξανόμενη μάζα του συνόλου τους, αποτελεί έναν όλο και μεγαλύτερο κίνδυνο για τις ανθρώπινες δραστηριότητες και για την θαλάσσια πανίδα λόγω της υψηλής αντοχής τους σε διαδικασίες φυσικής διάσπασης και των ποικίλων μεγεθών των τεμαχίων τους.
 Πιο συγκεκριμένα, εκτιμάται ότι οι άνω των 160 εκατομμύρια τόνοι πλαστικού που υπάρχουν στις θάλασσες της Γης θα υπερτριπλασιαστούν μέχρι το έτος 2040 (Richard Bailey et al., 2020), κάτι που θα λειτουργήσει αυξητικά με την σειρά του στην μόλυνση των υδάτων από επικίνδυνους ρύπους για την ανθρώπινη υγεία (είτε μέσω άμεσης επαφής είτε μέσω κατανάλωσης θαλάσσιων ειδών) καθώς και στην διατάραξη βιολογικών ισορροπιών που είναι απαραίτητες για την διατήρηση κρίσιμων οικοσυστημάτων.
 Έτσι, η ικανότητα εντοπισμού και παρατήρησης αυτών των ρύπων αποτελεί ένα σημαντικό βήμα στην δημιουργία μηχανισμού που θα μπορέσει να αναστρέψει την πορεία της θαλάσσιας μόλυνσης από πλαστικά υλικά. Η επιστράτευση μέσων τα οποία επιτρέπουν την μελέτη μεγάλων εκτάσεων για να προσδιοριστεί η τρέχουσα θέση συγκεντρώσεων επιπλεόντων απορριμμάτων επιτρέπει την έγκαιρη ενεργοποίηση διαδικασιών περισυλλογής τους και την έρευνα πιθανών σημείων απόθεσης τους.
Οι δορυφορικές εικόνες αποτελούν ένα τέτοιο μέσο, καθώς παρέχουν πληροφορίες για μεγάλα τμήματα της γήινης επιφάνειας σε συγκεκριμένες χρονικές στιγμές ενώ ταυτόχρονα δίνουν και την δυνατότητα εστίασης σε μικρότερες περιοχές ενδιαφέροντος. Η αποτελεσματικότητα της  χρήση δορυφορικών εικόνων βασίζεται στην διαφοροποίηση των οπτικών ιδιοτήτων (π.χ. φασματικές ταυτότητες) των πλεούμενων πλαστικών απορριμμάτων σε σχέση με το υδάτινο περιβάλλον στο οποίο βρίσκονται. Με βάση αυτή την διαφοροποίηση , υπάρχει μια ποικιλία δορυφορικών συστημάτων των οποίων οι εικόνες μπορούν να χρησιμοποιηθούν για την παρακολούθηση επιθαλάσσιων πλαστικών ρύπων.
Η τελική επιλογή, για τους σκοπούς της παρούσας εργασίας ήταν το σύστημα Sentinel-2, επειδή προσφέρει έναν συνδυασμό χωρικής ανάλυσης, γεωγραφικής κάλυψης, επαναληψιμότητας και προσβασιμότητας δεδομένων ο οποίος εξυπηρετεί τις ανάγκες της έρευνας που διεξήχθη.
Christian Sie: Die "engagierte Literatur" und die Religion
Creators: name: Pittrof, Thomas
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Marion Romberg: Die Welt im Dienst des Glaubens
Creators: name: König, Christian M.
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Webb in musica
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2022

Esiste un nuovo modo immersivo per esplorare alcune delle prime immagini a infrarossi e i dati di Jwst: attraverso il suono. Gli ascoltatori possono “entrare” nel complesso paesaggio sonoro delle scogliere cosmiche nella Nebulosa della Carena, esplorare due immagini della Nebulosa Anello meridionale e identificare i singoli punti in uno spettro di trasmissione dell'esopianeta gigante Wasp-96 b
Motivic Galois theory for motives of level ≤ 1
Creators: name: Bertolin, Cristiana
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: Fundamental group of Tannakian categories, Artin motives, 1- motives, motivic Galois groups
subject: 510 Mathematik
subject: 14L15;18A22

description: Let T be a Tannakian category over a field k of characteristic 0 and \pi(T) its fundamental group. In this paper we prove that there is a bijection between the otimes-equivalence classes of Tannakian subcategories of T and the normal affine group sub-T-schemes of \pi(T). We apply this result to the Tannakian category T_1(k) generated by motives of niveau \leq 1 defined over k, whose fundamental group is called the motivic Galois group G_mot(T_1(k)) of motives of niveau \leq 1. We find four short exact sequences of affine group sub-T_1(k)-schemes of G_mot(T_1(k)), correlated one to each other by inclusions and projections. Moreover, given a 1-motive M, we compute explicitly the biggest Tannakian subcategory of the one generated by M, whose fundamental group is commutative.
Anna Moraht-Fromm: Von einem, der auszog ... Das Werk Hans Malers von Ulm, Maler zu Schwaz
Creators: name: Schneider, Jörg
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Spectral estimates and non-selfadjoint perturbations of spheroidal wave operators
Creators: name: Finster, Felix
name: Schmid, Harald
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 510 Mathematik

description: The spheroidal wave operator $\cal A$ is a linear elliptic operator of second order with smooth coefficients on the unit sphere $S^2$. Using angular variables $\vartheta \in (0,\pi)$ and $\phi\in [0,2\pi)$ this operator may be written in the form ${\cal A}=-{d\over{d \cos \vartheta}}\sin^2\vartheta {d\over{d \cos \vartheta}} + {1\over {\sin^2 \vartheta}}\left(\Omega\sin^2\vartheta+k\right)^2.$ Here $\Omega\in{\Bbb C}$ is the aspherical parameter. The authors consider the operator $\cal A$ in the Hilbert space ${\cal H}=L^2\left((0,\pi),\sin \vartheta d\vartheta\right)$ with boundary conditions $\lim_{\vartheta\to 0,\pi}\Theta^\prime(\vartheta)=0 \text{\ if \ } k=0, \qquad \lim_{\vartheta\to 0,\pi}\Theta(\vartheta)=0 \text{\ if \ } k\neq 0. $ It is proved that the spectral representation for $\cal A$ is holomorphic in the aspherical parameter $\Omega$ in a neighborhood of the real line. For real $\Omega$, estimates are derived for all eigenvalue gaps uniformly in $\Omega$. The proof of the gap estimates is based on detailed estimates for complex solutions of the Riccati equation. The spectral representation for complex $\Omega$ is derived using the theory of slightly non-selfadjoint perturbations.
On the Eigenvalues of the Chandrasekhar-Page Angular Equation
Creators: name: Batic, Davide
name: Schmid, Harald
name: Winklmeier, Monika
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: discrete spectrum; self-adjoint holomorphic operator; power series expansion; recurrence relation
subject: 510 Mathematik

description: In this paper we study for a given azimuthal quantum number $\kappa$ the eigenvalues of the Chandrasekhar-Page angular equation with respect to the parameters $\mu$: $=am$ and $\nu$: $=a\omega$, where $a$ is the angular momentum per unit mass of a black hole, $m$ is the rest mass of the Dirac particle and $\omega$ is the energy of the particle (as measured at infinity). For this purpose, a self-adjoint holomorphic operator family $A(\kappa;\mu,\nu)$ associated to this eigenvalue problem is considered. At first we prove that for fixed $\kappa \in \Bbb R (-{1 \over 2},{1 \over 2})$ the spectrum of $A(\kappa;\mu,\nu)$ is discrete and that its eigenvalues depend analytically on $(\mu,\nu) \in \Bbb C^2$. Moreover, it will be shown that the eigenvalues satisfy a first order partial differential equation with respect to $\mu$ and $\nu$, whose characteristic equations can be reduced to a Painlevé III equation. In addition, we derive a power series expansion for the eigenvalues in terms of $\nu - \mu$ and $\nu + \mu$, and we give a recurrence relation for their coefficients. Further, it will be proved that for fixed $(\mu,\nu) \in \Bbb C^2$ the eigenvalues of $A(\kappa;\mu,\nu)$ are the zeros of a holomorphic function $\Theta$ which is defined by a relatively simple limit formula. Finally, we discuss the problem if there exists a closed expression for the eigenvalues of the Chandrasekhar--Page angular equation.
La prima immagine di Webb di un esopianeta
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2022

Per la prima volta, gli astronomi hanno utilizzato Jwst per acquisire un'immagine diretta di un pianeta al di fuori del Sistema solare: Hip 65426 b, un gigante gassoso di circa 15-20 milioni di anni, cento volte più lontano dalla sua stella ospite di quanto lo sia la Terra dal Sole. L'immagine, vista attraverso quattro diversi filtri di luce nell’infrarosso, mostra le potenzialità di Webb nel catturare mondi lontani
AA. VV., A Concordata de 1940 Portugal - Santa Sé, Edições Didaskalia, Lisboa 1993, 368 pp., 240X160, ISBN 972-651-223-9
Creators: name: Pedroso, Pedro Maria
Publisher: name: Theologica
Year: 1994

description: Theologica, v. 29 n. 1 (1994): Família e Igreja | Interrogações e caminhos
È settembre, andiamo fuori a vivere la notte
Creators: Fabrizio Villa
Publisher: name: Media Inaf
Year: 2022

A settembre le giornate iniziano ad accorciarsi e in questo mese, e precisamente il 23, l’estate astronomica finirà. Fra congiunzioni, occultazioni e opposizioni, per gli appassionati del cielo sarà un mese di appuntamenti imperdibili con stelle, lune e pianeti. E magari qualcuno riuscirà persino a vedere a occhio nudo la galassia di Andromeda, a due milioni e mezzo di anni luce da noi
Tame class field theory for arithmetic schemes
Creators: name: Schmidt, Alexander
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: class field theory; higher dimensional fields; arithmetic schemes; Chow group; zero cycles; fundamental group
subject: 510 Mathematik

description: Takagi's class field theory gave a decription of the abelian extensions of a number field $K$ in terms of ideal groups in $K$. In the 1980s, {\it K. Kato} and {\it S. Saito} [``Global class field theory of arithmetic schemes". Applications of algebraic K-theory to algebraic geometry and number theory, Proc. AMS-IMS-SIAM Joint Summer Res. Conf., Boulder/Colo. 1983, Part I, Contemp. Math. 55, 255--331 (1986; Zbl 0614.14001)] were able to generalize class field theory to higher dimensional fields, and to describe their abelian extensions using a generalized idèle class group whose definition is quite involved. In the case of unramified extensions, however, the class fields can be described geometrically using Chow groups. For fields of positive characteristic, a similarly geometric description for tamely ramified extensions was obtained by the author and {\it M.~Spiess} [J. Reine Angew. Math. 527, 13--36 (2000; Zbl 0961.14013)]. In this article, an analogous result is proved for the case of mixed characteristic.
Sn 1006, un “super Lhc” nella costellazione del Lupo
Creators: Mario Guarcello
Publisher: name: Media Inaf
Year: 2022

I resti di supernova possono comportarsi come potentissimi acceleratori di particelle, in grado di produrre raggi cosmici fino a energie di qualche PeV. La conferma arriva da uno studio guidato dall’astrofisica Roberta Giuffrida (Università di Palermo e Istituto nazionale di astrofisica) pubblicato questa settimana su Nature Communications
Marte a pieni polmoni con l’ossigeno di Moxie
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2022

Il suo nome è Moxie. È installato a bordo del rover perseverance della Nasa. Ed è il primo strumento ad aver prodotto ossigeno su un altro mondo, dimostrando il funzionamento della tecnologia di conversione elettrolitica dell’anidride carbonica nella preziosa molecola, utile a sostenere la presenza umana sul pianeta e alimentare i razzi per il ritorno degli astronauti dalle future missioni di esplorazione. Tutti i dettagli su Science Advances
Filippo, Alessandro e i Macedoni nel lessico Suda: dall'immagine classica alla visione bizantina
Creators: name: CAMPANINI, MONICA
Publisher: name: Universit� degli studi di Genova
Year: 2019

description: The purpose of this study is to identify, classify and analize all the contributions about Alexander the Great and the Macedonians recovered inside the lexicon Suda, the Xth century Byzantine Greek encyclopedia. The research focalizes also the attention on the sources the lexicon has used, analyzing the connection between the authors used by the encyclopedia and the notices the lexicon has referred, in order to discuss the modifications the lexicon has operated during the transmission of the texts. The discussion on the entries has involved all the aspects of the theme: from the history of the Argeads to the deeds of Alexander in Greece, Asia, India, to the inquiry into the Companions of the king and the women that have shared with him his voyage or that have been part of his family. The results of the inquiry confirm the possibility of a revision of Alexander's image under the byzantine's empire and open up to a new interpretation of his figure in that context.
Essays on Textual Information in Corporate Disclosure
Creators: name: Park, Gitae
Publisher: name: Lancaster University
Year: 2023

description: Textual information in various corporate disclosures, despite its unstructured feature, provides useful information beyond numeric information contained in financial statements such as earnings and cash flows. Using textual analysis methods, I examine how firms convey their textual information to users and how their communication impacts capital market and business decisions. This dissertation consists of two self-contained studies. Chapter 2 examines the real effects of a UK disclosure mandate that, with the aim of enhancing performance reporting, requires a subset of London Stock Exchange firms to describe their strategic aspects of value creation, such as business models and strategies, in their annual reports. Using an instrumented difference-in-differences design, I find that compliance with this initiative, evidenced by more disclosures of performance measures and commentaries relating to business operations and strategies, promotes intangible investments. My analysis of external and internal control systems suggests that enhanced performance reporting promotes investments because it attracts long-term investors and reduces CEO pay sensitivity to earnings performance. Chapter 3 examines management discussion of accruals and cash flows in earnings call. Using earnings call transcripts of S&P 500 firms, I extract cash flows and earnings measures within management presentation and calculate the weighted average of accruals attention. I find that relative emphasis on accruals varies with the ability of accruals addressing the mismatching problem of cash flows and the limitation of accruals. However, I also find that relative emphasis on accruals also reflects managerial incentives to downplay unfavorable information and that such abnormal emphasis on accruals predicts one year ahead poor performance. The return analysis shows that the negative signal of abnormal emphasis on accruals is not incorporated into stock prices immediately. The evidence suggests that abnormal emphasis on accruals may obscure true picture of periodic performance and influence investors’ decision-making. Combined together, the two studies contribute to the accounting literature by deepening our understanding of business communication reflected in financial texts and the incentives and behaviours of managers and investors.
Centro di supercalcolo al servizio dei Big Data
Creators: Eleonora Ferroni
Publisher: name: Media Inaf
Year: 2022

Iniziano oggi le attività del neonato Centro nazionale di supercalcolo, istituito per svolgere ricerca e promuovere l’innovazione di livello nazionale e internazionale, a partire da una infrastruttura di punta per l’High Performance Computing e la gestione di grandi quantità di dati. L'intervista a Ugo Becciani, coordinatore del team Inaf che partecipa al progetto
The Recognition and Legitimacy of the Taliban Government: A Conundrum in International law
Creators: name: Hashimy, Sayed Qudrat
Publisher: name: figshare
Year: 2022
Subjects: subject: 180107 Conflict of Laws (Private International Law)
subject: FOS: Law
subject: 180121 Legal Practice, Lawyering and the Legal Profession
subject: 180202 Te Maori Whakakaere Rauemi (Maori Resource Law)
subject: Law
subject: 180110 Criminal Law and Procedure
subject: 180199 Law not elsewhere classified
subject: 180103 Administrative Law
subject: 180106 Comparative Law
subject: 180108 Constitutional Law
subject: 180112 Equity and Trusts Law
subject: 189999 Law and Legal Studies not elsewhere classified
subject: 180114 Human Rights Law

description: Recognizing a state under international law is significant as to legal obligation, maintaining diplomatic relations and protecting human rights, etc. This study attempts to analyze whether the Taliban government can be recognized as the legitimate government or not? The study relies on the principles of international law to examine how to effectively control and legitimacy of the recognition. This study does not deal with the political consideration or state practice of recognition. Similarly, the study does not concern with the recognition of Afghanistan, whose legal personality remains intact as Afghanistan has been independent since 1919 despite the country facing several challenges, her permanence cannot be questioned under international law. The study employed doctrinal legal research in which normative approaches are used to evaluate some of the literature to acquire the required legal propositions.
Gelfand-Tsetlin polytopes and the integer decomposition property
Creators: name: Alexandersson, Per
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52B12, 05E10

description: Let $P$ be the Gelfand--Tsetlin polytope defined by the skew shape $λ/μ$ and weight $w$. In the case corresponding to a standard Young tableau, we completely characterize for which shapes $λ/μ$ the polytope $P$ is integral. Furthermore, we show that $P$ is a compressed polytope whenever it is integral and corresponds to a standard Young tableau. We conjecture that a similar property hold for arbitrary $w$, namely that $P$ has the integer decomposition property whenever it is integral. Finally, a natural partial ordering on GT-polytopes is introduced that provides information about integrality and the integer decomposition property, which implies the conjecture for certain shapes.
description: 23 pages. Accepted for publication in the European Journal of Combinatorics
Helga Steiger: St. Michael in Schwäbisch Hall
Creators: name: Brückner, Jens
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Hubert Sowa (Hrsg.): Der Bamberger Dom
Creators: name: Hörsch, Markus
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Cloning and physical mapping of RNA polymerase genes from Methanobacterium thermoautotrophicum and comparison of homologies and gene orders with those of RNA polymerase genes from other methanogenic archaebacteria
Creators: name: Schallenberg, J.
name: Moes, M.
name: Truss, M.
name: Reiser, W.
name: Thomm, Michael
name: Stetter, Karl Otto
name: Klein, A.
Publisher: name: Universität Regensburg
Year: 1988
Subjects: subject: 570 Biowissenschaften, Biologie

description: The structural genes encoding the four largest subunits of RNA polymerase, A, B', B", and C, were physically mapped in Methanobacterium thermoautotrophicum Winter. The genes formed a cluster in the order B", B', A, C and had a common orientation. DNA hybridization experiments yielded different degrees of homology between RNA polymerase gene sequences of different species of Methanobacterium and Methanococcus voltae. No homology was detectable between Methanobacterium thermoautotrophicum and Methanosarcina barkeri. From Southern hybridization experiments in which probes of the four genes from Methanobacterium thermoautotrophicum Winter and restriction digests of the genomic DNAs of the different methanogens were used, a common gene order of the RNA polymerase genes could be deduced.
Dörthe Jakobs u. a (Hrsg.): UNESCO-Weltkulturerbe Reichenau
Creators: name: Dähne, Arnulf Christian
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Structural homology between different archaebacterial DNA-dependent RNA polymerases analyzed by immunological comparison of their components
Creators: name: Schnabel, R.
name: Thomm, Michael
name: Gerardy-Schahn, R.
name: Zillig, W.
name: Stetter, Karl Otto
name: Huet, J.
Publisher: name: Universität Regensburg
Year: 1983
Subjects: subject: 570 Biowissenschaften, Biologie

description: The archaebacterial DNA-dependent RNA polymerases have a complex structure containing eight or more components. Immunochemical analysis shows an extensive homology between the components of the enzymes of nine different species. Two enzyme subtypes can be distinguished: that of the thermoacidophilic and/or sulfur-metabolizing archaebacteria with the composition BACDEFGHIJ and that of the methanogenic plus halophilic archaebacteria with the composition ABB'C(D).... Components B and B' of the latter subtype probably evolved by the division of the large component B of the BACD... type enzyme. The existence of the two subtypes corroborates the division of the archaebacteria into two phylogenetic main branches.
Hugo Brandenburg: Die Konstantinische Petersbasilika am Vatikan in Rom
Creators: name: Liverani, Paolo
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Staatliche Schlösser und Gärten Baden-Württemberg (Hrsg.): Die Zisterzienser
Creators: name: Stadelmaier, Christian
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Design and Development of ReMoVES Platform for Motion and Cognitive Rehabilitation
Creators: name: MORANDO, MATTEO
Publisher: name: Universit� degli studi di Genova
Year: 2020

description: Exergames have recently gained popularity and scientific reliability in the field of assistive computing technology for human well-being. The ReMoVES platform, developed by the author, provides motor and cognitive exergames to be performed by elderly or disabled people, in conjunction with traditional rehabilitation. Data acquisition during the exercise takes place through Microsoft Kinect, Leap Motion and touchscreen monitor. The therapist is provided with feedback on patients' activity over time in order to assess their weakness and correct inaccurate movement attitudes. This work describes the technical characteristics of the ReMoVES platform, designed to be used by multiple locations such as rehabilitation centers or the patient's home, while providing a centralized data collection server. The system includes 15 exergames, developed from scratch by the author, with the aim of promoting motor and cognitive activity through patient entertainment. The ReMoVES platform differs from similar solutions for the automatic data processing features in support of the therapist. Three methods are presented: based on classic data analysis, on Support Vector Machine classification, and finally on Recurrent Neural Networks. The results describe how it is possible to discern patient gaming sessions with adequate performance from those with incorrect movements with an accuracy of up to 92%. The system has been used with real patients and a data database is made available to the scientific community. The aim is to encourage the dissemination of such data to lay the foundations for a comparison between similar studies.
Wedge locality and asymptotic commutativity
Creators: name: Soloviev, Michael A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we study twist deformed quantum field theories obtained by combining the Wightman axiomatic approach with the idea of spacetime noncommutativity. We prove that the deformed fields with deformation parameters of opposite sign satisfy the condition of mutual asymptotic commutativity, which was used earlier in nonlocal quantum field theory as a substitute for relative locality. We also present an improved proof of the wedge localization property discovered for the deformed fields by Grosse and Lechner, and we show that the deformation leaves the asymptotic behavior of the vacuum expectation values in spacelike directions substantially unchanged.
description: LaTeX, 23 pages; typos corrected, an explanatory example added, matches the published version
Thermotoga maritima sp. nov. represents a new genus of unique extremely thermophilic eubacteria growing up to 90°C
Creators: name: Huber, Robert
name: Langworthy, Thomas A.
name: König, H.
name: Thomm, Michael
name: Woese, Carl R.
name: Sleytr, W.
name: Stetter, Karl Otto
Publisher: name: Universität Regensburg
Year: 1986
Subjects: subject: 570 Biowissenschaften, Biologie

description: A novel type of bacterium has been isolated from various geothermally heated locales on the sea floor. The organisms are strictly anaerobic, rod-shaped, fermentative, extremely thermophilic and grow between 55 and 90° C with an optimum of around 80° C. Cells show a unique sheathlike structure and monotrichous flagellation. By 16S rRNA sequencing they clearly belong to the eubacteria, although no close relationship to any known group could be detected. The majority of their lipids appear to be unique in structure among the eubacteria. Isolate MSB8 is described as Thermotoga maritima, representing the new genus Thermotoga.
Evidence for a Plasmid in a Methanogenic Bacterium
Creators: name: Thomm, Michael
name: Altenbuchner, J.
name: Stetter, Karl Otto
Publisher: name: Universität Regensburg
Year: 1983
Subjects: subject: 570 Biowissenschaften, Biologie

description: Among 15 strains of methanogens, one plasmid, pMPl, was identified in the new coccoid isolate PL-12/M. It could not be detected in the cleared lysate, but it was detected in the viscous pellet. The plasmid had a molecular weight of ca. 4.6 x 106. A restriction enzyme cleavage map of the cloned plasmid was derived.
Linearized stability analysis of stationary solutions for surface diffusion with boundary conditions
Creators: name: Garcke, Harald
name: Ito, Kazuo
name: Yoshihito, Kohsaka
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: surface diffusion, gradient flow, stability of stationary solutions, eigenvalues, isoperimetric problems
subject: 510 Mathematik

description: The linearized stability of stationary solutions to the surface diffusion flow with angle and no-flux boundary conditions is studied. In this linearized stability analysis the $H^{-1}$ gradient flow structure plays a key role. As a byproduct the analysis also gives a criterion for the stability of critical points of the length functional of curves which come into contact with the outer boundary. Some examples of linearized stability are studied as well.
Konrad Krimm, Maria Magdalena Rückert (Hrsg.): Zisterzienserklöster als Reichsabteien
Creators: name: Rosen, Wolfgang
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Milena Svec Goetschi: Klosterflucht und Bittgang
Creators: name: Hoven-Hacker, Jasmin
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Monoclonal antibodies against contact sites A of Dictyostelium discoideum: detection of modifications of the glycoprotein in tunicamycin-treated cells
Creators: name: Ochiai, H.
name: Stadler, J.
name: Westphal, M.
name: Wagle, G.
name: Merkl, Rainer
name: Gerisch, G.
Publisher: name: Universität Regensburg
Year: 1982
Subjects: subject: 570 Biowissenschaften, Biologie

description: Tunicamycin acts on cell aggregation in Dictyostelium discoideum by changing cell movement and by inhibiting the EDTA-stable type of intercellular adhesion. Tunicamycin-treated cells show unco-ordinated pseudopodial activity such that pseudopods are simultaneously extended from all parts of the cell surface, and the cells are unable to move in straight paths. Concurrent with the inhibition of formation of EDTA-stable contacts, N-glycosylation of a glycoprotein specific for aggregation-competent cells is inhibited. This glycoprotein, previously called contact site A, has an apparent mol. wt. of 80 kilodaltons (kd). In membranes of tunicamycin-treated cells, two components are detected that react with certain monoclonal antibodies against contact sites A: one component of 66 kd, the other of 53 kd apparent mol. wt. Another group of monoclonal antibodies reacts only with the 80-kd glycoprotein and the 66-kd component. These results are in accord with the assumption that the glycoprotein carries two carbohydrate chains, and that the antibodies differ in their requirement for glycosylation of the antigen. Despite the coincidence between blockage of EDTA-stable cell adhesion and inhibited glycosylation of contact sites A, direct involvement of the carbohydrate moieties of this glycoprotein in intercellular adhesion seems questionable. EDTA-stable cell adhesion has not been blocked by Fab fragments from antibodies that specifically react with the glycosylated protein.
Juan Fornés, La ciência canónica contemporânea (Valoración crítica), EUNSA, Pamplona 1984, 426 pp., 215X145.
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1994

description: Theologica, v. 29 n. 1 (1994): Família e Igreja | Interrogações e caminhos
Vías de interacción entre el clima y el COVID-19
Creators: name: Ford, James
name: Zavaleta-Cortijo, Carol
name: Ainembabazi, Triphine
name: Anza-Ramírez, Cecilia
name: I, Arotoma-Rojas
name: Bezerra, Joana
name: Chicmana, Victoria
name: Galappaththi, Eranga
name: Angula, Martha M.
name: Kazaana, Christopher
name: Lwasa, Shuaib
name: Namanya, Didas
name: Nkwinti, Nosipho
name: Nuwagira, Richard
name: Okware, Samuel
name: Osipova, Maria
name: Pickering, Kerrie
name: Singh, Chandni
name: Berrang-Ford, Lea
name: Hyams, Keith
name: Miranda, J. Jaime
name: Naylor, Angus W.
name: New, Mark
name: van Bavel, Bianca
Publisher: name: figshare
Year: 2022
Subjects: Human impacts of climate change and human adaptation

description: This is the Spanish version of a peer review manuscript published originally in English language, named: "Interactions between climate and COVID-19" DOI:https://doi.org/10.1016/S2542-5196(22)00174-7 . This Spanish translation was performed by Ximena Armandariz, who is a peruvian certified translator. The COVID-19 Observatory study completed this translation to Spanish to provide a broader access to this information.
Stefanie Monika Neidhardt: Autonomie im Gehorsam
Creators: name: Handke, Marcus
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Lipschitz conditions, triangular ratio metric, and quasiconformal maps
Creators: name: Chen, Jiaolong
name: Hariri, Parisa
name: Klén, Riku
name: Vuorinen, Matti
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 51M10, 30C65

description: The triangular ratio metric is studied in subdomains of the complex plane and Euclidean $n$-space. Various inequalities are proven for it. The main results deal with the behavior of this metric under quasiconformal maps. We also study the smoothness of metric disks with small radii.
description: 30 pages, four figures
Winfried Schöntag: Die Marchtaler Fälschungen
Creators: name: Eberl, Immo
Publisher: name: Rottenburger Jahrbuch für Kirchengeschichte
Year: 1970

description: Rottenburger Jahrbuch für Kirchengeschichte, Bd. 37 (2018): Rottenburger Jahrbuch für Kirchengeschichte, Band 37
Coexistence of photonic and atomic Bose-Einstein condensates in ideal atomic gases
Creators: name: Boichenko, N.
name: Slyusarenko, Yu.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We have studied conditions of photon Bose-Einstein condensate formation that is in thermodynamic equilibrium with ideal gas of two-level Bose atoms below the degeneracy temperature. Equations describing thermodynamic equilibrium in the system were formulated; critical temperatures and densities of photonic and atomic gas subsystems were obtained analytically. Coexistence conditions of these photonic and atomic Bose-Einstein condensates were found. There was predicted the possibility of an abrupt type of photon condensation in the presence of Bose condensate of ground-state atoms: it was shown that the slightest decrease of the temperature could cause a significant gathering of photons in the condensate. This case could be treated as a simple model of the situation known as "stopped light" in cold atomic gas. We also showed how population inversion of atomic levels can be created by lowering the temperature. The latter situation looks promising for light accumulation in atomic vapor at very low temperatures.
description: 18 pages, 3 figures