cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Speech Emotion Recognition on Greek Theatrical Data
Creators: name: Μούττη, Μαρία
Publisher: name: Πανεπιστήμιο Πελοποννήσου
Year: 2024
Subjects: subject: CNN
subject: Speech Emotion Recognition
subject: SVM
subject: GreThe
subject: Audio analysis

description: Μ.Δ.Ε. 113
description: Τhe aim of this thesis is to develop and evaluate machine learning and deep learning models that can accurately recognize emotions in Greek theatrical speech, thereby improving accessibility for individuals with hearing impairments and contributing to more inclusive cultural experiences. Speech emotion recognition (SER) in the context of theatrical plays presents a unique and intriguing challenge, as the theatrical environment often involves actors striving to evoke deeper emotions from the audience. As a result, the emotional attributes of valence and arousal in datasets from theatrical plays are likely to differ significantly from those in standard SER datasets commonly used in the literature. However, real-world datasets from theatrical plays are scarce in the literature. To address this gap, a novel dataset named GreThE is introduced, a newly available public resource designed for speech emotion recognition in Greek theatrical plays. This dataset includes utterances from various actors and plays, annotated for valence and arousal by multiple annotators, with inter-annotator agreement factored into the final ground truth. The experimental setup involves both traditional machine-learning-based approaches (SVMs) and deep-learning-based methods, with a particular focus on leveraging pre-trained models from well-resourced English language datasets to enhance emotion recognition performance in cross-domain settings. The results indicate that deep learning architectures, particularly those using transfer learning, significantly outperform traditional methods, achieving higher accuracy rates in detecting complex emotional states. The findings have significant implications for cultural accessibility, particularly in the context of Greek theatrical performances. By facilitating automatic emotion recognition, the proposed models can provide a richer and more inclusive experience for spectators with hearing loss. This research also lays the groundwork for future studies on SER in other underrepresented languages and cultural contexts.
Το Cloud Computing και η εφαρμογή του στα Συστήματα Διαχείρισης Περιεχομένου (CMS)
Creators: name: Αρσλάνογλου, Γεώργιος Αχιλλέως
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Υπηρεσίες στο νέφος
Συστήματα Διαχείρισης Περιεχομένου
Μετατροπή βίντεο
Cloud Computing
CMS
Video Transcoding

description: Σε αυτήν την εργασία αναλύεται το Cloud Computing, οι υπηρεσίες που προσφέρει, και οι πάροχοι τέτοιων υπηρεσιών που υπάρχουν σήμερα, καθώς και τα συστήματα διαχείρισης περιεχομένου (Content Management Systems), και τα συστήματα Web CMS ή WCMS. Έπειτα παρουσιάζεται η έρευνα που υπάρχει αυτή τη στιγμή για τις υπηρεσίες του Cloud Computing, για τα CMS, αλλά και για τη χρήση των υπηρεσιών του Cloud Computing στα CMS. Στη συνέχεια, αφού αξιολογείται η υπάρχουσα κατάσταση, παρουσιάζεται η πρόταση της χρήσης των υπηρεσιών Cloud για τον εμπλουτισμό των υπαρχόντων συστημάτων CMS, και όχι η εξ ολοκλήρου μετάβαση σε υπηρεσίες Cloud. Για την απόδειξη της προτεινόμενης πρότασης, αναπτύχθηκε το πρωτότυπο πρόσθετο (plugin) Kumori για το σύστημα WCMS WordPress, με τη χρήση της γλώσσας PHP, το οποίο χρησιμοποιεί τις υπηρεσίες Cloud της Amazon Web Services για τη μετατροπή αρχείων βίντεο, επιδεικνύοντας έτσι τη δυνατότητα χρήσης των υπηρεσιών Cloud στα συστήματα CMS.
description: In the present thesis, we study Cloud Computing, the services that it offers, and the providers of such services that exist today, as well as the Content Management Systems, and the Web CMS or WCMS. Afterwards, we present the academic research that is being conducted at the present day for the services of Cloud Computing, for the CMS, and for the usage of Cloud Computing services in the CMS. After evaluating the current situation, we present the proposition of using Cloud Services for enriching the current CMS, instead of fully transitioning to Cloud services. For our proposition, we developed the prototype plugin Kumori for the WordPress WCMS, in PHP, which uses the Cloud services of Amazon Web Services for transcoding video files, thus demonstrating the possibility of using Cloud services in CMS.
Optically Probing Spin and Charge Interactions in an Tunable Artificial Molecule
Creators: name: Krenner, H. J.
name: Clark, E. C.
name: Nakaoka, T.
name: Bichler, M.
name: Scheurer, C.
name: Abstreiter, G.
name: Finley, J. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We optically probe and electrically control a single artificial molecule containing a well defined number of electrons. Charge and spin dependent inter-dot quantum couplings are probed optically by adding a single electron-hole pair and detecting the emission from negatively charged exciton states. Coulomb and Pauli blockade effects are directly observed and hybridization and electrostatic charging energies are independently measured. The inter-dot quantum coupling is confirmed to be mediated predominantly by electron tunneling. Our results are in excellent accord with calculations that provide a complete picture of negative excitons and few electron states in quantum dot molecules.
description: shortened version: 6 pages, 3 figures, 1 table, to appear in Phys. Rev. Lett
Financial statements analysis of shipping firms
Creators: name: Makris, Aristeidis-Stefanos
name: Μακρής, Αριστείδης-Στέφανος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2024
Subjects: subject: Financial statements
subject: Shipping firm
subject: Listed
subject: Balance sheet
subject: Income statement
subject: Statement of changes in equity
subject: Cash flow statement
subject: Charter
subject: Capitalization
subject: Earnings manipulation

description: Σκοπός αυτής της εργασίας είναι να παρουσιάσει έναν οδηγό και μια τεχνική ανάλυση στις βασικές κατηγορίες των χρηματοοικονομικών καταστάσεων μιας ναυτιλιακής εταιρείας, εισηγμένης στο χρηματιστήριο. Οι κατηγορίες αυτές είναι ο Ισολογισμός, η Κατάσταση Αποτελεσμάτων Χρήσης, η Κατάσταση Μεταβολής Ιδίων Κεφαλαίων, η Κατάσταση Ταμειακών Ροών και οι Σημειώσεις που έπονται αυτών των 4 καταστάσεων και θα αναλυθούν οι βασικές υποκατηγορίες της κάθε κατηγορίας. Επίσης, θα γίνει αναφορά στην λογιστική αντιμετώπιση από μια ναυτιλιακή εταιρεία, όταν ναυλώνεται ένα πλοίο της (είτε για ένα ταξίδι, είτε για συγκεκριμένο χρονικό διάστημα), στα έξοδα που κεφαλαιοποιεί η ναυτιλιακή εταιρεία και τι σημαίνει αυτό λογιστικά για την αποτίμηση της αξίας του πλοίου και την υποτίμησή του με την πάροδο του χρόνου, στις διαφορές που έχουν οι χρηματοοικονομικές καταστάσεις εισηγμένων και μη εισηγμένων ναυτιλιακών εταιρειών, όπως και στο τρόπο που αναφέρονται στα διευθυντικά στελέχη τα αποτελέσματα της εταιρείας. Σε ερευνητικό επίπεδο, θα εξεταστούν τελεσίδικες περιπτώσεις χειραγώγησης των χρηματοοικονομικών καταστάσεων εισηγμένων ναυτιλιακών εταιρειών και θα αναλυθούν οι τρόποι, με τους οποίους οι εταιρείες αυτές καταφέρανε την χειραγώγηση με την χρήση χρηματοοικονομικών δεικτών για την καλύτερη ανάλυση και κατανόηση των περιπτώσεων.
From Ramanujan to renormalization: the art of doing away with divergences and arriving at physical results
Creators: name: Bietenholz, Wolfgang
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Popular Physics (physics.pop-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A century ago, Srinivasa Ramanujan -- the great self-taught Indian genius of mathematics -- died, shortly after returning from Cambridge, UK, where he had collaborated with Godfrey Hardy. Ramanujan contributed numerous outstanding results to different branches of mathematics, like analysis and number theory, with a focus on special functions and series. Here we refer to apparently weird values which he assigned to two simple divergent series, $\sum_{n \geq 1} n$ and $\sum_{n \geq 1} n^{3}$. These values are sensible, however, as analytic continuations, which correspond to Riemann's $ζ$-function. Moreover, they have applications in physics: we discuss the vacuum energy of the photon field, from which one can derive the Casimir force, which has been experimentally measured. We further discuss its interpretation, which remains controversial. This is a simple way to illustrate the concept of renormalization, which is vital in quantum field theory.
description: 32 pages, LaTex, 6 figures, a number of minor improvements
Chiral magnetic effect in lattice models of tilted multi-Weyl semimetals
Creators: name: Menon, Anirudha
name: Chattopadhay, Souvik
name: Basu, Banasri
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the chiral magnetic effect (CME) in tilted multi-Weyl Semimetals (WSM) employing a two-band lattice model. We focus on the type-II phase of mWSMs, introduced by incorporating a Lorentz symmetry violating tilt term. We add to the understanding of the CME (and anomalous Hall effect) in the type-II phase of mWSMs and near the Lifshitz transition by varying tilt. Like the elementary WSM, our results also indicate that the Berry curvature drives the CME for higher monopole charges. We find a peak in the CME at the transition point and discuss its significance using the density of states. Along the way we also examine both observables as a function of the energy separation of the Weyl points.
description: 6 pages and 6 figures in the original version. 13 pages, 12 figures in the revised version
Γεωλογική Μοντελοποίηση και Γεωστατιστική – Κοιτασματολογική μελέτη του κοιτάσματος μεικτών θειούχων του Μαντέμ Λάκκου Χαλκιδικής
Creators: name: Nestorov, Niκola (Νεστόροβ Νικολά Βλαντιμίρ)
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Γεωστατιστική
Κοιτασματολογία
Μαντέμ Λάκκος
Geostatistics
Ore Geology
Madem Lakkos

description: Ο στόχος της διατριβής ειδίκευσης είναι ο υπολογισμός των αποθεμάτων του κοιτάσματος του Μαντέμ Λάκκου. Επίσης, γίνεται προσπάθεια να δημιουργηθεί ένα δυναμικό εργαλείο λήψης αποφάσεων και προβλέψεων για την ανακάλυψη μιας ενδεχόμενης μεταλλοφορίας παρόμοιου τύπου. Η περιοχή ενδιαφέροντος εντοπίζεται στην Σερβομακεδονική μάζα και συγκεκριμένα στο όριο μεταξύ των ενοτήτων Βερτίσκου και Κερδυλίων. Η ηλικία της ζώνης γενικά θεωρείται Προπαλαιοζωική. Ποικίλης σύστασης και ηλικίας πυριγενείς διεισδύσεις διακόπτουν τη συνέχεια των κρυσταλλοσχιστοδών πετρωμάτων. Γενικά έχει καθιερωθεί ότι η μεταλλοφορία του Μαντέμ Λάκκου οφείλεται στον Ηωκαινικό - Ολιγοκαινικό γρανοδιορίτη του Στρατωνίου. Στην ευρύτερη περιοχή του Μαντέμ Λάκκου πραγματοποιήθηκαν 1123 γεωτρήσεις με συνολικό μήκος 92569.61 m. Για τους σκοπούς της μοντελοποίησης το κοίτασμα διακρίθηκε σε 15 λιθολογικά domain. Συνεπώς, θεωρώντας ότι η μέση πυκνότητα του μεταλλεύματος είναι 4.5gr/tn σε συνδυασμό με ένα θεωρητικό όριο εκμεταλλευσιμότητας 0.5gr/tn Au και με βάση τις καμπυλες περιεκτικοτήτων – tonnage προκύπτει ότι, για πιθανά αποθέματα η μεταλλοφορία του χρυσού εκτιμάται στους 279Ktn με 1.3 ppm Au, για δυνατά αποθέματα η μεταλλοφορία του χρυσού εκτιμάται στους 612 Ktn με 1.0 ppm Au και για βέβαια αποθέματα η μεταλλοφορία του χρυσού εκτιμάται στους 503 Ktn με 1.75 ppm Au.
description: The primary aim of the present thesis is the calculation of the resourses of the Madem Lakkos ore deposit. An effort was made to upgrade the model into a dynamic desition making tool so it can be used for the discovery of new ore bodies. The area of interest is located in the Serbomacedonian massif which is considered to be pre-palaiozoic. The Madem Lakkos ore deposit is in the contact zone between Vertiskos and Kerdylia units. Several igneous intrusions of various chemical compositions and ages intercept the metamorphic rocks. It is considered that the Madem Lakkos mineralization comes from the Eocene - Oligocene Stratoni granodiorite. More than 1123 bore holes have been drilled in the Madem Lakkos area with a total length of 92569.61m. For modeling purposes the ore body has been separated to 15 lithological domains. Therefore considering the mean density of the the ore deposit to be 4.5gr/tn while accepting a theoretical cut-off grade at 0.5gr/tn Au and on the basis of the grade - tonnage curves we conclude that for indicated resources the gold mineralization is estimated to be 279Ktn at 1.3 ppm Au, for inferred resources the gold mineralization is estimated to be 612 Ktn at 1.0 ppm Au and for measured resources the gold mineralization is estimated to be 503 Ktn at 1.75 ppm Au.
Free Yang-Mills vs. Toric Sasaki-Einstein
Creators: name: Nishioka, Tatsuma
name: Takayanagi, Tadashi
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been known that the Bekenstein-Hawking entropy of the black hole in AdS_5 * S^5 agrees with the free N=4 super Yang-Mills entropy up to the famous factor 4/3. This factor can be interpreted as the ratio of the entropy of the free Yang-Mills to the entropy of the strongly coupled Yang-Mills. In this paper we compute this factor for infinitely many N=1 SCFTs which are dual to toric Sasaki-Einstein manifolds. We observed that this ratio always takes values within a narrow range around 4/3. We also present explicit values of volumes and central charges for new classes of toric Sasaki-Einstein manifolds.
description: 18 pages, 7 figures, latex, comments and a reference added (v2), explanation improved and references added (v3), a reference added (v4)
Ηp-φράγματα για φασματικούς πολλαπλασιαστές πάνω σε γραφήματα
Creators: name: Παπαγεωργίου, Ευθυμία Ευάγγελου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Φασματικοί
Πολλαπλασιαστές
Γραφήματα
Spectral
Multipliers
Graphs

description: Σκοπός αυτής της εργασίας είναι να αποδείξουμε ένα ανάλογο του αποτελέσματος των Calderón και Torchinsky, πάνω στα γραφήματα που είναι εφοδιασμένα με συνάρτηση βάρους. Υποθέτουμε ότι το γράφημα ικανοποιεί την ιδιότητα διπλασιασμού του όγκου και μια ανισότητα Poincaré. Έστω m(L) ο φασματικός πολλαπλασιαστής που σχετίζεται με τη διακριτή Λαπλασιανή και po που ανήκει στο (0,1) ένας αριθμός που εξαρτάται από τη γεωμετρία του γραφήματος. Αποδεικνύεται τότε ότι αν ο πολλαπλασιαστής m(λ) ικανοποιεί συνθήκη παρόμοια με αυτήν του κλασικού θεωρήματος των πολλαπλασιαστών του Hörmander, τότε ο αντίστοιχος τελεστής m(L) είναι φραγμένος στον Hp, όπου το p ανήκει στο (po,1]. Το θεώρημα που παραθέτουμε, καθώς και η απόδειξη, δόθηκαν το 2008 από το Μ. Μαριά και την Ι. Κυρέζη.
description: Περίληψη We study the boundedness on the Hardy spaces Hp of spectral multiplier operators associated with the discrete Laplacian on a weighted graph. We assume that the graph satisfies the doubling volume property and a Poincaré inequality. We prove that there is po belonging to (0,1), depending on the geometry of the graph, such that if the multiplier satisfies a condition similar to the one in the classical Hörmander multiplier theorem, then the corresponding operator is bounded on Hp, where p belongs to (po,1].
A new stochastic process to model Heart Rate series during exhaustive run and an estimator of its fractality parameter
Creators: name: Kammoun, Imen
name: Billat, Véronique
name: Bardet, Jean-Marc
Publisher: name: arXiv
Year: 2008
Subjects: subject: Applications (stat.AP)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In order to interpret and explain the physiological signal behaviors, it can be interesting to find some constants among the fluctuations of these data during all the effort or during different stages of the race (which can be detected using a change points detection method). Several recent papers have proposed the long-range dependence (Hurst) parameter as such a constant. However, their results induce two main problems. Firstly, DFA method is usually applied for estimating this parameter. Clearly, such a method does not provide the most efficient estimator and moreover it is not at all robust even in the case of smooth trends. Secondly, this method often gives estimated Hurst parameters larger than 1, which is the larger possible value for long memory stationary processes. In this article we propose solutions for both these problems and we define a new model allowing such estimated parameters.
Testing the relevance of effective interaction potentials between highly charged colloids in suspension
Creators: name: Dobnikar, J.
name: Castañeda-Priego, R.
name: von Grünberg, H. H.
name: Trizac, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Combining cell and Jellium model mean-field approaches, Monte Carlo together with integral equation techniques, and finally more demanding many-colloid mean-field computations, we investigate the thermodynamic behavior, pressure and compressibility of highly charged colloidal dispersions, and at a more microscopic level, the force distribution acting on the colloids. The Kirkwood-Buff identity provides a useful probe to challenge the self-consistency of an approximate effective screened Coulomb (Yukawa) potential between colloids. Two effective parameter models are put to the test: cell against renormalized Jellium models.
Existence of long-lived isotopes of a superheavy element in natural Au
Creators: name: Marinov, A.
name: Rodushkin, I.
name: Pape, A.
name: Kashiv, Y.
name: Kolb, D.
name: Brandt, R.
name: Gentry, R. V.
name: Miller, H. W.
name: Halicz, L.
name: Segal, I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Evidence for the existence of long-lived isotopes with atomic mass numbers 261 and 265 and abundance of (1-10)x10$^{-10}$ relative to Au has been found in a study of natural Au using an inductively coupled plasma - sector field mass spectrometer. The measured masses fit the predictions made for the masses of $^{261}$Rg and $^{265}$Rg (Z=111) and for some isotopes of nearby elements. The possibility that these isotopes belong to the recently discovered class of long-lived high spin super- and hyperdeformed isomeric states is discussed.
description: 4 pages, 3 figures, 2 tables
EVALUATION OF THE RESULTS OF A MODIFIED METHOD OF MINI-GASTRIC BYPASS IN OBESITY AGAINST THE BACKGROUND OF TYPE 2 DIABETES MELLITUS
Creators: name: Sotiboldiev, A.A.
name: Botirov, J.A.
name: Ibragimov, U.Ya.
Publisher: name: Zenodo
Year: 2024

description: There are more than 40 different types of bariatric surgeries, conventionally divided into 3 groups [2], which indicates the lack of a unified approach to solving this pathology, which dictates the need for further analysis [1]. Gastric bypass (GB) has a restrictive-malabsorptive mechanism of action, is performed either as a Roux-en-Y gastric bypass or as a mini-gastric bypass and allows for a 60-70% reduction in body mass index (BMI), which many specialists consider the "gold standard" of bariatric surgery [2; 4].
Turn-over in pulsar spectra around 1 GHz
Creators: name: Kijak, J.
name: Gupta, Y.
name: Krzeszowski, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The main aim is to investigate the possibility of a high frequency turn-over in the radio spectrum of pulsars. Using the GMRT, multi-frequency flux density measurements of several candidate pulsars have been carried out and their spectra have been extended to lower frequencies. We present the first direct evidence for turn-over in pulsar radio spectra at high frequencies. A total of 3 pulsars (including 2 new ones from this study) are now shown to have a turn-over frequency > 1 GHz, and one is shown to have a turn-over at ~600 MHz.
description: 4 pages, to be published in Astronomy & Astrophysics
The Ca II H&K Rotation-Activity Relation in 50 Mid-to-Late Type M-Dwarfs
Creators: name: Boudreaux, Thomas M.
name: Newton, Elisabeth R.
name: Mondrik, Nicholas
name: Charbonneau, David
name: Irwin, Jonathan
Publisher: name: Zenodo
Year: 2021
Subjects: Cool Stars on the main sequence

description: In the canonical formulation of stellar magnetic dynamo theory, the tachocline in partially convective stars serves to arrange small scale randomly oriented fields, which are generated by stochastic movement of plasma, into a large scale coherent field. Mid-to-late M-dwarfs show more magnetic activity than classical magnetic dymano theory predicts. This leads to the open question: what mechanism generates and maintains these fields in fully convective stars? Mid-to-late M-dwarfs show tight correlations between rotation rates and magnetic activity, consistent with elements of classical dynamo theory. We use data from Magellan Inamori Kyocera Echelle (MIKE) Spectrograph to measure R'HK values for 50 spectroscopically identified M-dwarfs selected from the MEarth survey. These stars span spectral classes from M5.0 to M3.5 and have rotation periods ranging from hours to months. Here, we present the rotation–activity relationship as traced through these data. We find power law and saturated regimes consistent to within one sigma of previously published results, and find the saturated value to be mass-dependent.
description: {"references": ["Chabrier, G., & Baraffe, I. 1997, A&A, 327, 1039, Astudillo-Defru, N., Delfosse, X., Bonfils, X., et al. 2017, A&A, 600, A13, Wright, N. J., Newton, E. R., Williams, P. K. G., Drake, J. J., & Yadav, R. K. 2018, MNRAS, 479, 2351, Salvatier, J., Wiecki, T. V., & Fonnesbeck, C. 2016, PeerJComputer Science, 2, e55"]}
Linking Microscopic and Macroscopic Models for Evolution: Markov Chain Network Training and Conservation Law Approximations
Creators: name: Melnik, Roderick V. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Information Theory (cs.IT)
subject: Numerical Analysis (math.NA)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this paper, a general framework for the analysis of a connection between the training of artificial neural networks via the dynamics of Markov chains and the approximation of conservation law equations is proposed. This framework allows us to demonstrate an intrinsic link between microscopic and macroscopic models for evolution via the concept of perturbed generalized dynamic systems. The main result is exemplified with a number of illustrative examples where efficient numerical approximations follow directly from network-based computational models, viewed here as Markov chain approximations. Finally, stability and consistency conditions of such computational models are discussed.
description: 21 pages, 5 figures
Muon $g-2$: A review
Creators: name: Keshavarzi, Alex
name: Khaw, Kim Siang
name: Yoshioka, Tamaki
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The muon magnetic anomaly, $a_μ=(g_μ-2)/2$, plays a special role in the history of the Standard Model (SM). Precise calculations and measurements of this fundamental quantity provide a stringent test of the SM and a window to the physics beyond. In light of the first result published by the Fermilab Muon $g-2$ experiment, this article reviews the current status of the experimental measurement and theoretical prediction of the muon anomalous magnetic moment. It also provides an overview on resulting constraints of associated physics beyond the SM (BSM), future muon $g-2$ experiments, and on the progress of experiments that are closely connected to the physics of the muon $g-2$, such as measurements that could provide complementary information about BSM physics in the muon sector.
description: 32 pages, 12 figures, updated to match the published version
Fermi-surface reconstruction at the metamagnetic high-field transition in uranium mononitride
Creators: name: Hamann, Sandra
name: Förster, Tobias
name: Gorbunov, Denis. I.
name: König, Markus
name: Uhlarz, Marc
name: Wosnitza, Joachim
name: Helm, Toni
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the electronic and thermodynamic properties of the antiferromagnetic metal uranium mononitride with a Néel temperature $T_N\approx 53\,$K. The fabrication of microstructures from single crystals enables us to study the low-temperature metamagnetic transition at approximately $58\,$T by high-precision magnetotransport, Hall-effect, and magnetic-torque measurements. We confirm the evolution of the high-field transition from a broad and complex behavior to a sharp first-order-like step, associated with a spin flop at low temperature. In the high-field state, the magnetic contribution to the temperature dependence of the resistivity is suppressed completely. It evolves into an almost quadratic dependence at low temperatures indicative of a metallic character. Our detailed investigation of the Hall effect provides evidence for a prominent Fermi-surface reconstruction as the system is pushed into the high-field state.
description: 9 pages, 9 figures
Final state boundary condition of the Schwarzschild black hole
Creators: name: Ahn, Doyeol
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that the internal stationary state of the Schwarzschild black hole can be represented by a maximally entangled two-mode squeezed state of collapsing matter and infalling Hawking radiation. The final boundary condition at the singularity is then described by the random unitary transformation acting on the collapsing matter field. The outgoing Hawking radiation is obtained by the final state projection on the total wave function, which looks like a quantum teleportation process without the classical information transmitted. The black hole evaporation process as seen by the observer outside the black hole is now a unitary process but non-local physics is required to transmit the information outside the black hole. It is also shown that the final state projection by the evaporation process is strongly affected by the quantum state outside the event horizon, which clearly violates the locality principle.
description: Version_2
Split Casimir operator for simple Lie algebras, solutions of Yang-Baxter equations and Vogel parameters
Creators: name: Isaev, A. P.
name: Krivonos, S. O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 17B15 (Primary) 17B10, 17B25 (Secondary)

description: We construct characteristic identities for the split (polarized) Casimir operators of the simple Lie algebras in defining (minimal fundamental) and adjoint representations. By means of these characteristic identities, for all simple Lie algebras we derive explicit formulae for invariant projectors onto irreducible subrepresentations in T^{\otimes 2} in two cases, when T is the defining and the adjoint representation. In the case when T is the defining representation, these projectors and the split Casimir operator are used to explicitly write down invariant solutions of the Yang-Baxter equations. In the case when T is the adjoint representation, these projectors and characteristic identities are considered from the viewpoint of the universal description of the simple Lie algebras in terms of the Vogel parameters.
description: Minor corrections, 45 pages
Diffusion equations for a Markovian jumping process
Creators: name: Srokowski, T.
name: Kaminska, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a Markovian jumping process which is defined in terms of the jump-size distribution and the waiting-time distribution with a position-dependent frequency, in the diffusion limit. We assume the power-law form for the frequency. For small steps, we derive the Fokker-Planck equation and show the presence of the normal diffusion, subdiffusion and superdiffusion. For the Lévy distribution of the step-size, we construct a fractional equation, which possesses a variable coefficient, and solve it in the diffusion limit. Then we calculate fractional moments and define fractional diffusion coefficient as a natural extension to the cases with the divergent variance. We also solve the master equation numerically and demonstrate that there are deviations from the Lévy stable distribution for large wave numbers.
description: 10 pages, 3 figures
Variable selection for the multicategory SVM via adaptive sup-norm regularization
Creators: name: Zhang, Hao Helen
name: Liu, Yufeng
name: Wu, Yichao
name: Zhu, Ji
Publisher: name: arXiv
Year: 2008
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 62H30 (Primary)

description: The Support Vector Machine (SVM) is a popular classification paradigm in machine learning and has achieved great success in real applications. However, the standard SVM can not select variables automatically and therefore its solution typically utilizes all the input variables without discrimination. This makes it difficult to identify important predictor variables, which is often one of the primary goals in data analysis. In this paper, we propose two novel types of regularization in the context of the multicategory SVM (MSVM) for simultaneous classification and variable selection. The MSVM generally requires estimation of multiple discriminating functions and applies the argmax rule for prediction. For each individual variable, we propose to characterize its importance by the supnorm of its coefficient vector associated with different functions, and then minimize the MSVM hinge loss function subject to a penalty on the sum of supnorms. To further improve the supnorm penalty, we propose the adaptive regularization, which allows different weights imposed on different variables according to their relative importance. Both types of regularization automate variable selection in the process of building classifiers, and lead to sparse multi-classifiers with enhanced interpretability and improved accuracy, especially for high dimensional low sample size data. One big advantage of the supnorm penalty is its easy implementation via standard linear programming. Several simulated examples and one real gene data analysis demonstrate the outstanding performance of the adaptive supnorm penalty in various data settings.
description: Published in at http://dx.doi.org/10.1214/08-EJS122 the Electronic Journal of Statistics (http://www.i-journals.org/ejs/) by the Institute of Mathematical Statistics (http://www.imstat.org)
The role of $qqqq\bar{q}$ components in the nucleon and the N(1440) resonance
Creators: name: Julia-Diaz, B.
name: Riska, D. O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The role of $q\bar q$ components in the nucleon and the N(1440) resonance is studied by explicit coupling of the lowest positive parity $qqqq\bar q$ state to the $qqq$ components in the harmonic oscillator quark model. The lowest energy $qqqq\bar q$ component, where the 4-quark subsystem has the flavor-spin symmetry $[4]_{FS}[22]_F[22]_S$, is close in energy to the lowest positive parity excitation of the nucleon in the $qqq$ quark model. The confining interaction leads to a strong mixing of the $qqqq\bar q$ system and the positive parity excited state of the $qqq$ system. This result is in line with the phenomenological indications for a two-component structure of the N(1440) resonance. The presence of substantial $q\bar q$ components in the N(1440) can bring about a reconciliation of the constituent quark model with the large empirical decay width of the N(1440).
description: Accepted for publication in Nucl. Phys. A
Experimental investigation of the local environment and lattice distortion in refractory medium entropy alloys
Creators: name: Lilensten, Lola
name: Provost, Karine
name: Perrière, Loïc
name: Fonda, Emiliano
name: Couzinié, Jean-Philippe
name: Amann, Fabienne
name: Radtke, Martin
name: Dirras, Guy
name: Guillot, Ivan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: EXAFS analysis of pure elements, binary and ternary equiatomic refractory alloys within the Nb-Zr-Ti-Hf-Ta system is performed at the Nb and Zr K-edges to analyze the evolution of the chemical local environment and the lattice distortion. A good mixing of the elements is found at the atomic scale. For some compounds, a distribution of distances between the central atom and its neighbors suggests a distortion of the structure. Finally, analysis of the Debye-Waller parameters show some correlation with the lattice distortion parameter $δ^2$, and allows to quantify experimentally the static disorder in medium entropy alloys.
A Speaker Verification Backend with Robust Performance across Conditions
Creators: name: Ferrer, Luciana
name: McLaren, Mitchell
name: Brummer, Niko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we address the problem of speaker verification in conditions unseen or unknown during development. A standard method for speaker verification consists of extracting speaker embeddings with a deep neural network and processing them through a backend composed of probabilistic linear discriminant analysis (PLDA) and global logistic regression score calibration. This method is known to result in systems that work poorly on conditions different from those used to train the calibration model. We propose to modify the standard backend, introducing an adaptive calibrator that uses duration and other automatically extracted side-information to adapt to the conditions of the inputs. The backend is trained discriminatively to optimize binary cross-entropy. When trained on a number of diverse datasets that are labeled only with respect to speaker, the proposed backend consistently and, in some cases, dramatically improves calibration, compared to the standard PLDA approach, on a number of held-out datasets, some of which are markedly different from the training data. Discrimination performance is also consistently improved. We show that joint training of the PLDA and the adaptive calibrator is essential -- the same benefits cannot be achieved when freezing PLDA and fine-tuning the calibrator. To our knowledge, the results in this paper are the first evidence in the literature that it is possible to develop a speaker verification system with robust out-of-the-box performance on a large variety of conditions.
Asylum, commitment, and psychiatric treatment in historical context
Creators: name: Libbiter, Andrew Paul
Publisher: name: University of British Columbia
Year: 2009

description: This thesis was a sociological, historically informed, study of the interactions between three key variables over a two hundred year period. These variables were the changing nature of asylum- based care of the mentally ill, the epistemological and professional dominance of the psychiatric profession, and changing periods of mental health legislation. Specifically, the study examined how historical and contemporary tensions between the perspectives of psychiatry and law have been manifested in British Columbia, and with what consequences. Two qualitative methodological approaches were utilised. Data was obtained principally by historical analysis, A secondary component of the study was four exploratory-descriptive, in-depth interviews with mental health consumer-activists. These interviews were conducted to explore their beliefs regarding involuntary detention and treatment. The origins of the asylum were traced in the U.K., America, and Canada. Changes in nineteenth and twentieth century strategies concerning the management of the mentally disordered were examined in terms of the dialectical interaction between the identified variables. Using British Columbia as a case study, reasons for the discontinuous decline of the asylum in the twentieth century were analysed. In particular, the emergence and consequences of a contemporary dichotomy in the mental health discourse, summarised as "rights" vs "treatment", was examined. Findings showed that mental health legislative reform is initiated in order to facilitate major changes in the management of the mentally disordered. Such changes were shown to have centred around attempts to manage the enduring consequences of the asylum. The influence of the psychiatric profession was shown to be relative to the over-arching economic and social control objectives of the State. The dichotomy of treatment vs rights was suggested to be the latest manifestation of the historical tension between psychiatry and law. The contention was made that the dichotomy is essentially false. Implications for social work and social policy were discussed and suggestions for future research made.
SENSEI: Characterization of Single-Electron Events Using a Skipper-CCD
Creators: name: Barak, Liron
name: Bloch, Itay M.
name: Botti, Ana
name: Cababie, Mariano
name: Cancelo, Gustavo
name: Chaplinsky, Luke
name: Chierchie, Fernando
name: Crisler, Michael
name: Drlica-Wagner, Alex
name: Essig, Rouven
name: Estrada, Juan
name: Etzion, Erez
name: Moroni, Guillermo Fernandez
name: Gift, Daniel
name: Holland, Stephen E.
name: Munagavalasa, Sravan
name: Orly, Aviv
name: Rodrigues, Dario
name: Singal, Aman
name: Haro, Miguel Sofo
name: Stefanazzi, Leandro
name: Tiffenberg, Javier
name: Uemura, Sho
name: Volansky, Tomer
name: Yu, Tien-Tien
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We use a science-grade Skipper Charge Coupled Device (Skipper-CCD) operating in a low-radiation background environment to develop a semi-empirical model that characterizes the origin of single-electron events in CCDs. We identify, separate, and quantify three independent contributions to the single-electron events, which were previously bundled together and classified as "dark counts": dark current, amplifier light, and spurious charge. We measure a dark current, which depends on exposure, of (5.89+-0.77)x10^-4 e-/pix/day, and an unprecedentedly low spurious charge contribution of (1.52+-0.07)x10^-4 e-/pix, which is exposure-independent. In addition, we provide a technique to study events produced by light emitted from the amplifier, which allows the detector's operation to be optimized to minimize this effect to a level below the dark-current contribution. Our accurate characterization of the single-electron events allows one to greatly extend the sensitivity of experiments searching for dark matter or coherent neutrino scattering. Moreover, an accurate understanding of the origin of single-electron events is critical to further progress in ongoing R&D efforts of Skipper and conventional CCDs.
description: 9 pages, 6 figures, 4 tables
Theory of pair density wave on a quasi-one-dimensional lattice in the Hubbard model
Creators: name: Yoshida, Soma
name: Yada, Keiji
name: Tanaka, Yukio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this study, we examine the superconducting instability of a quasi-one-dimensional lattice in the Hubbard model based on the random-phase approximation (RPA) and the fluctuation exchange (FLEX) approximation. We find that a spin-singlet pair density wave (PDW-singlet) with a center-of-mass momentum of $2k_F$ can be stabilized when the one-dimensionality becomes prominent toward the perfect nesting of the Fermi surface. The obtained pair is a mixture of even-frequency and odd-frequency singlet ones. The dominant even-frequency component does not have nodal lines on the Fermi surface. This PDW-singlet state is more favorable as compared to RPA when self-energy correction is introduced in the FLEX approximation.
description: 10 pages, 14 figures
Protection and Indemnity Clubs Αλληλασφάλιση πλοιοκτητών – Letter of undertaking
Creators: name: Μανατάκη, Ανδρονίκη Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Αλληλασφαλιστικοί συνεταιρισμοί πλοιοκτητών
Συντηρητική κατάσχεση πλοίων
Εγγυητική επιστολή
P & I Clubs
Ship arrest
Letter of undertaking

description: Σκοπός της παρούσας διπλωματικής εργασίας ήταν η μελέτη ενός ιδιαίτερου είδους ναυτικής ασφάλισης, η αλληλασφάλιση, η οποία είναι συνώνυμη με τη λειτουργία και την ανάπτυξη των Protection and Indemnity Clubs (P & I Clubs). Στο πρώτο μέρος της παρούσας εργασίας, αναλύθηκε η γένεση και η ιστορική εξέλιξη των P & I Clubs, η νομική τους φύση, η οργανωτική τους δομή, έγινε αναφορά στα μέλη και στα οικονομικά τους, και τέλος, περιγράφηκε η ασφαλιστική κάλυψη που παρέχουν. Στο δεύτερο μέρος της εργασίας, μελετήθηκαν τα ασφαλιστικά μέτρα που μπορούν να ληφθούν κατά πλοίων, και δόθηκε ιδιαίτερη βαρύτητα στο ασφαλιστικό μέτρο της συντηρητικής κατάσχεσης τόσο κατά το ελληνικό όσο και κατά το διεθνές δίκαιο. Το τρίτο και τελευταίο μέρος της εργασίας αφιερώθηκε στην εγγυητική επιστολή των P & I Clubs, ήτοι το letter of undertaking. Περιγράφηκε η λειτουργία του, οι προϋποθέσεις χορήγησής του από τα Clubs, ο τύπος που περιβάλλεται, και τέλος, έγινε διάκρισή του από την τραπεζική εγγυητική επιστολή.
description: The aim of the present thesis was the study of a very special type of marine insurance; the shipowners’ mutual insurance, which is mainly provided by the Protection and Indemnity Clubs (P & I Clubs). In the first chapter we presented the main features of the P & I Clubs themselves, ie their establishment, their legal nature, their organisation, the procedure for joining them, their economics and the insurance cover they provide. In the second chapter we studied aspects concerning ship arrest both under Greek and international law. Last but not least, in the third chapter of the thesis, we analyzed the letter of undertaking provided by the P & I Clubs to their members; the use of the letter, the requirements for its issuance, its form and finally, we distinguish it from the bank guarantee.
ARTUR HAQIDAGI MIFLAR SHAKLLANISHINING DASTLABKI ASOSLARI
Creators: name: Boychayeva, Durdona
Publisher: name: Zenodo
Year: 2024

description: Qirol Artur haqidagi afsonalarning shakllanishida keltlar afsonalari bilan bir qatorda xristian dini an’analarining ham o‘rni ulkan. Artur afsonasining ijtimoiy-madaniy sabablar ta’sirida o‘zgarishi bilan Artur obrazining o‘zi ham yangi ma’no kasb etadi. Ushbu maqolada Artur afsonasining ijtimoiy-madaniy sabablar ta’sirida o‘zgarishi bilan nafaqat Gaveyn obrazi turli xil o‘zgarishlarga uchrashi, balki Arturning o‘zi ham yangi ma’no kasb etishi, Artur haqidagi miflarning shakllanishiga doir ma’lumotlar keltirilgan.
Study of open star cluster NGC 2632 with Gaia EDR3
Creators: name: Gaysin, R.A.
name: Hojaev, A.S.
Publisher: name: Zenodo
Year: 2021
Subjects: open star cluster, Gaia EDR3, personal - NGC2632

description: The study of open star cluster NGC2632 is presented based on data of Gaia EDR3. 495 probable members of the cluster were discovered. The kinematic and some other sensitive parameters of the open cluster NGC2632 were obtained and discussed.
Linearity defects of modules over commutative rings
Creators: name: Iyengar, Srikanth B.
name: Roemer, Tim
Publisher: name: arXiv
Year: 2008
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13D25, 13H10 (Primary), 13C11, 13D02, 13F20 (Secondary)

description: This article concerns linear parts of minimal resolutions of finitely generated modules over commutative local, or graded rings. The focus is on the linearity defect of a module, which marks the point after which the linear part of its minimal resolution is acyclic. The results established track the change in this invariant under some standard operations in commutative algebra. As one of the applications, it is proved that a local ring is Koszul if and only if it admits a Koszul module that is Cohen-Macaulay of minimal degree. An injective analogue of the linearity defect is introduced and studied. The main results express this new invariant in terms of linearity defects of free resolutions, and relate it to other ring theoretic and homological invariants of the module.
description: 23 pages, minor modifications
Spontaneous fluctuation-symmetry breaking and the Landauer principle
Creators: name: Buffoni, Lorenzo
name: Campisi, Michele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the problem of the energetic cost of information erasure by looking at it through the lens of the Jarzynski equality. We observe that the Landauer bound, $\langle W \rangle \geq kT \ln 2$, on average dissipated work $\langle W \rangle$ associated to an erasure process, literally emerges from the underlying second law bound as formulated by Kelvin, $\langle W \rangle \geq 0$, as consequence of a spontaneous breaking of the Crooks-Tasaki fluctuation-symmetry, that accompanies logical irreversibility. We illustrate and corroborate this insight with numerical simulations of the process of information erasure performed on a 2D Ising ferromagnet.
description: 16 pages, 5 figures. Introduction revised in v2 and discussion session added in v3
Sagitta: a Neural Network Approach to Identifying and Predicting Ages of YSOs
Creators: name: McBride, Aidan
name: Lingg, Ryan
name: Kounkel, Marina
name: Covey, Kevin
name: Hutchinson, Brian
Publisher: name: Zenodo
Year: 2021
Subjects: Young stars
Stellar systems, clusters, and associations

description: A reliable census of of pre-main sequence stars with known ages is critical to our understanding of early stellar evolution, but historically there has been difficulty in separating such stars from the field. We present a trained neural network model, Sagitta, that relies on Gaia DR2 and 2MASS photometry to identify pre-main sequence stars and to derive their age estimates. Our model successfully recovers populations and stellar properties associated with known star forming regions up to five kpc. Furthermore, it allows for a detailed look at the star-forming history of the solar neighborhood, particularly at age ranges to which we were not previously sensitive. In particular, we observe several bubbles in the distribution of stars, the most notable of which is a ring of stars associated with the Local Bubble, which may have common origins with the Gould's Belt.