cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Efficient Nonthermal Ion and Electron Acceleration Enabled by the Flux-Rope Kink Instability in 3D Nonrelativistic Magnetic Reconnection
Creators: name: Zhang, Qile
name: Guo, Fan
name: Daughton, William
name: Li, Xiaocan
name: Li, Hui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The relaxation of field-line tension during magnetic reconnection gives rise to a universal Fermi acceleration process involving the curvature drift of particles. However, the efficiency of this mechanism is limited by the trapping of energetic particles within flux-ropes. Using 3D fully kinetic simulations, we demonstrate that the flux-rope kink instability leads to strong field-line chaos in weak-guide-field regimes where the Fermi mechanism is most efficient, thus allowing particles to transport out of flux-ropes and undergo further acceleration. As a consequence, both ions and electrons develop clear power-law energy spectra which contain a significant fraction of the released energy. The low-energy bounds are determined by the injection physics, while the high-energy cutoffs are limited only by the system size. These results have strong relevance to observations of nonthermal particle acceleration in space and astrophysics.
description: 8 pages, 3 figures. Accepted by Physical Review Letters
Solitons in 4d Wess-Zumino-Witten models -- Towards unification of integrable systems --
Creators: name: Hamanaka, Masashi
name: Huang, Shan-Chi
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We construct soliton solutions of the four-dimensional Wess-Zumino-Witten (4dWZW) model in the context of a unified theory of integrable systems with relation to the 4d/6d Chern-Simons theory. We calculate the action density of the solutions and find that the soliton solutions behave as the KP-type solitons, that is, the one-soliton solution has a localized action/energy density on a 3d hyperplane in 4-dimensions (soliton wall) and the n-soliton solution describes n intersecting soliton walls with phase shifts. We note that the Ward conjecture holds mostly in the split signature (+,+,-,-). Furthermore, the 4dWZW model describes the string field theory action of the open N=2 string theory in the four-dimensional space-time with the split signature and hence our soliton solutions would describe a new-type of physical objects in the N=2 string theory. We discuss instanton solutions in the 4dWZW model as well. Noncommutative extension and quantization of the unified theory of integrable systems are also discussed.
description: 19 pages, 2 figures; typos corrected, references added, version to appear in Proceedings of the OCNMP-2024 Conference: Bad Ems, 23-29 June 2024
Additional file 1 of Characteristics of emergency department admissions with congestive heart failure in the United States: a Nationwide cross-sectional study
Creators: name: Zhang, Xingyu
name: Qiu, Peilin
name: Prushinskaya, Anna
name: Jiang, Yun
name: Fan, Hui
name: Yang, Sheng
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Supplement Table 1. Association between ED visiting with Congestive heart failure and patient visiting characteristics, NHAMCS 2014–2016. Note: the adjusted OR was from a logistic regression including all variables in the table.
Identificação de classes de uso e ocupação do solo nas APAs que compõem a zona de amortecimento da Rebio Tinguá/Rio de Janeiro com classificação supervisionada semiautomática
Creators: name: Renato Dantas Borges
name: Vivian Castilho da Costa
Publisher: name: Zenodo
Year: 2023

description: RESUMOO crescimento da população no estado do Rio de Janeiro associado a exploração dos recursos naturais vem trazendo impactos ao ambiente natural. Isto ocorre devido as mudanças da cobertura e uso da terra, associadas a expansão da urbanização desordenada. Assim, objetiva-se identificar e caracterizar as Áreas de Proteção Ambiental (APAs) que compõem a zona de amortecimento da Reserva Biológica (Rebio) do Tingua/RJ quanto ao seu uso e ocupação, a partir da utilização do Sensoriamento Remoto e de geoprocessamento. Metodologicamente, os dados foram analisados e processados por meio de imagens Sentinel-2 com suporte dos softwares QGIS e Google Earth Pro. Foram utilizadas duas imagens referentes as datas de 24/04/2016 e 02/06/2020 sendo submetidas a processos de classificação supervisionada. Como resultado, foi possível identificar e localizar áreas onde a vegetação foi mais suprimida e mais preservada, e quais foram as Áreas de Proteção Ambiental onde ocorreram mudanças mais significativas de uso e cobertura da terra.Palavras-chave: Zona de Amortecimento, Sensoriamento Remoto, Classificação Supervisionada
Comic writing and the reader in the Quart livre of François Rabelais
Creators: name: Sheppard, L. Randall
Publisher: name: University of British Columbia
Year: 2010

description: The Quart Livre of Francois Rabelais is a work which like all the work of Rabelais, presents a non-verisimilar fiction, through abundant authorial commentary, and an unreliable narrator, through a narrative strategy peculiar to a certain genre of comic writing. Following the model of Aristotelian poetics, which founded a generic theory of tragedy on the response of a reader (catharsis), we pursue our inquiry into "genre" in the Quart Livre of Rabelais by examining the effects of the comic fiction on an "implied reader," an exemplary reader created by the generic expectations generated by the literary text itself. First, we examine the authorial strategy which distinguishes the comic fiction in the Quart Livre from other genres which rely upon a mimesis of "representation" (an "illusion of reality") to obtain their characteristic effects. Secondly, we examine the question of "purpose" (purposiveness) in the kind of writing of which the Quart Livre is an example, as literary form determined by the (anticipated) "desire" of a reader. Finally, we examine the major episodes in the Quart Livre itself, with a view to drawing the portrait of this reader — a reader who "indulges" the author, a smiling reader gratified by the accentuated "difference" of satire, a laughing reader identifying with the object of his laughter. It is this last reader who is the sign of the characteristic ambivalence of the humour in Rabelai3, which relativises any attempt by the polemic either to kill laughter by idealising or 3acralising, or to reduce laughter to the smile of irony. We conclude that the comic writing in the Quart Livre of Rabelai3 opposes the tendency, for instance, in tragedy to idealise, to individualise, and thereby to sacralise the tragic "victim" necessary to fulfill the cathartic (social) function in the audience. Comic "victimage" as we found it in the Quart Livre, show3 a movement antithetical to tragic victimage: the ideal and the "individual" become the common and the "ordinary," and the sacred becomes the profane, in order that the reader may laugh.
Exclusive branching fraction measurements of semileptonic tau decays into three charged hadrons, $τ^- \to ϕπ^- ν_τ$ and $τ^- \to ϕK^- ν_τ$
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using a data sample corresponding to an integrated luminosity of 342 $fb^{-1}$ collected with the BABAR detector at the SLAC PEP-II electron-positron storage ring operating at a center-of-mass energy near 10.58 GeV, we measure ${\cal{B}} (τ^- \to π^- π^- π^+ ν_τ) = (8.83 \pm 0.01 \pm 0.13) %$, ${\cal{B}} (τ^- \to K^- π^- π^+ ν_τ) = (0.273\pm 0.002\pm 0.009)%$, ${\cal{B}} (τ^- \to K^- π^- K^+ ν_τ) = (0.1346\pm 0.0010 \pm 0.0036)%$ and ${\cal{B}} (τ^- \to K^- K^- K^+ ν_τ) = (1.58\pm 0.13 \pm 0.12)\times 10^{-5}$, where the uncertainties are statistical and systematic, respectively. Events where the $π^+π^-$ pair is consistent with coming from a $K^0_S$ are excluded. These are significant improvements over previous measurements, with the ${\cal{B}} (τ^- \to K^- K^- K^+ ν_τ)$ result being the first resonant plus non-resonant measurement of this mode. We also report a first measurement of ${\cal{B}} (τ^- \to ϕπ^- ν_τ) = (3.42\pm 0.55 \pm 0.25)\times 10^{-5}$ and a new measurement of ${\cal{B}} (τ^- \to ϕK^- ν_τ) = (3.39\pm 0.20 \pm 0.28)\times 10^{-5}$.
description: 7 pages, 2 postscript figures, 3 tables, published in Physical Review Letters 100, 011801 (2008)
Thermodynamics of the system of massive Dirac fermions in a uniform magnetic field
Creators: name: Fang, Ren-Hong
name: Dong, Ren-Da
name: Hou, De-Fu
name: Sun, Bao-Dong
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct the grand partition function of the system of massive Dirac fermions in a uniform magnetic field from Landau levels, through which all thermodynamic quantities can be obtained. Making use of the Abel-Plana formula, these thermodynamic quantities can be expanded as power series with respect to the dimensionless variable $b=2eB/T^{2}$. The zero-field magnetic susceptibility is expanded at zero mass, and the leading order term is logarithmic. We also calculate scalar, vector current, axial vector current and energy-momentum tensor of the system through ensemble average approach. Mass correction to chiral separation effect is discussed. For massless chiral fermions, our results recover the chiral magnetic effect for right- and left-handed fermions, as well as chiral separation effect.
description: 22 pages. arXiv admin note: text overlap with arXiv:2005.08512
Evaluating explainable artificial intelligence methods for multi-label deep learning classification tasks in remote sensing
Creators: name: Kakogeorgiou, Ioannis
name: Karantzalos, Konstantinos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Although deep neural networks hold the state-of-the-art in several remote sensing tasks, their black-box operation hinders the understanding of their decisions, concealing any bias and other shortcomings in datasets and model performance. To this end, we have applied explainable artificial intelligence (XAI) methods in remote sensing multi-label classification tasks towards producing human-interpretable explanations and improve transparency. In particular, we utilized and trained deep learning models with state-of-the-art performance in the benchmark BigEarthNet and SEN12MS datasets. Ten XAI methods were employed towards understanding and interpreting models' predictions, along with quantitative metrics to assess and compare their performance. Numerous experiments were performed to assess the overall performance of XAI methods for straightforward prediction cases, competing multiple labels, as well as misclassification cases. According to our findings, Occlusion, Grad-CAM and Lime were the most interpretable and reliable XAI methods. However, none delivers high-resolution outputs, while apart from Grad-CAM, both Lime and Occlusion are computationally expensive. We also highlight different aspects of XAI performance and elaborate with insights on black-box decisions in order to improve transparency, understand their behavior and reveal, as well, datasets' particularities.
LISA detections of massive black hole inspirals: parameter extraction errors due to inaccurate template waveforms
Creators: name: Cutler, Curt
name: Vallisneri, Michele
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The planned Laser Interferometer Space Antenna (LISA) is expected to detect the inspiral and merger of massive black hole binaries (MBHBs) at z
description: RevTeX4, 16 pages, 2 EPS figures. Corrected typos, clarified statements
Excitonic Effects in the Optical Spectra of Graphene Nanoribbons
Creators: name: Yang, Li
name: Cohen, Marvin L.
name: Louie, Steven G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a first-principles calculation of the optical properties of armchair-edged graphene nanoribbons (AGNRs) with many-electron effects included. The reduced dimensionality of the AGNRs gives rise to an enhanced electron-hole binding energy for both bright and dark exciton states (0.8-1.4 eV for GNRs with width w ~ 1.2 nm) and dramatically changes the optical spectra owing to a near complete transfer of oscillator strength to the exciton states from the continuum transitions. The characteristics of the excitons of the three distinct families of AGNRs are compared and discussed. The enhanced excitonic effects found here are expected to be of importance in optoelectronic applications of graphene-based nanostructures.
description: 14 pages and 5 figures
4U 0115+63 from RXTE and INTEGRAL Data: Pulse Profile and Cyclotron Line Energy
Creators: name: Tsygankov, S. S.
name: Lutovinov, A. A.
name: Churazov, E. M.
name: Sunyaev, R. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyze the observations of the transient X-ray pulsar 4U 0115+63 with the RXTE and INTEGRAL observatories in a wide X-ray (3-100 keV) energy band during its intense outbursts in 1999 and 2004. The energy of the fundamental harmonic of the cyclotron resonance absorption line near the maximum of the X-ray flux from the source (luminosity range 5x10^{37} - 2x10^{38} erg/s) is ~11 keV. When the pulsar luminosity falls below ~5x10^{37} erg/s, the energy of the fundamental harmonic is displaced sharply toward the high energies, up to ~16 keV. Under the assumption of a dipole magnetic field configuration, this change in cyclotron harmonic energy corresponds to a decrease in the height of the emitting region by ~2 km, while other spectral parameters, in particular, the cutoff energy, remain essentially constant. At a luminosity ~7x10^{37} erg/s, four almost equidistant cyclotron line harmonics are clearly seen in the spectrum. This suggests that either the region where the emission originates is compact or the emergent spectrum from different (in height) segments of the accretion column is uniform. We have found significant pulse profile variations with energy, luminosity, and time. In particular, we show that the profile variations from pulse to pulse are not reduced to a simple modulation of the accretion rate specified by external conditions.
description: 30 pages, 13 figures, Astronomy Letters, 33, 368 (2007)
A translatological evaluation of three greek translations of Tennessee Williams' a streetcar named desire and their reception in Greece:
Creators: name: Λαγάκου, Μαρία Λ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Μετάφραση
Τένεσι Γουίλιαμς
Αμερικάνικο θέατρο
Κριτική
Translation
Tennessee Wiliams
American drama
Criticism

description: Ο στόχος της διατριβής είναι πολυσχιδής: Πρώτον, περιλαμβάνει μια παρουσίαση του επιστημονικού πεδίου στο οποίο τα κείμενα πηγή και στόχος, καθώς και ο δραματουργός, οι μεταφραστές και το κοινό έχουν συνυπάρξει και αλληλοεπηρεαστεί. Αφού προσδιοριστούν οι λειτουργία και ο τύπος των κειμένων, η διατριβή θα παράσχει μια μεταφρασεολογική ανάλυση όλων των πιθανά μεταφρασεολογικά προβληματικών πολιτισμικών στοιχείων, τα οποία περιλαμβάνονται στις τρεις πιο πρόσφατα δημοσιευμένες μεταφράσεις του Α Streetcar Named Desire του Tennessee Williams. Το τελικό βήμα θα είναι μια κριτική αξιολόγηση και παρατηρήσεις σχετικά με τις νόρμες και τους νόμους που διέπουν τις μεταφραστικές διαδικασίες αυτών των προβληματικών στοιχείων. Η περιγραφική ανάλυση υποστηρίζεται εκτενώς με εμπειρικές ανακαλύψεις και παρατηρήσεις, καθώς και με δευτερεύουσα έρευνα.
description: The ultimate aim of this thesis is multi-faceted: Firstly, it will include a presentation of the scientific framework and the context in which the ST and the TTs, as well as the playwright, the translators and the audiences have existed and influenced each other. Once the text functions and types have been determined, the thesis will provide a comparative analysis of all the potential translatologically problematic culture-specific elements, which are included in the three most recently published Greek translations of A Streetcar Named Desire by Tennessee Williams. The final step will be a critical evaluation and a conclusion regarding the norms that govern the translation process of these problematic areas. Τhe descriptive analysis is well-supported by empirical findings and observations, as well as secondary research.
Ο ναός των Αγίων Αποστόλων στο Πυργί της Χίου:
Creators: name: Μισαηλίδου, Άννα Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: subject: Αρχιτεκτονική
subject: Χίος
subject: Πυργί
subject: Οκταγωνικοί ναοί
subject: Architecture
subject: FOS: Civil engineering
subject: Chios
subject: Pyrgi
subject: Single octagon church

description: Αντικείμενο της διατριβής είναι ο οκταγωνικός ναός των Αγίων Αποστόλων στο Πυργί της Χίου, τον οποίο οι ερευνητές χρονολογούσαν στον 13ο-14ο αιώνα. Στη διατριβή γίνεται διεξοδική μελέτη των επιγραφών που αποτελούν μέρος της τοιχογράφησης εστιάζοντας κυρίως στις πληροφορίες που δίνονται για τους κτήτορες. Οι πληροφορίες αυτές καθόρισαν το ιστορικό πλαίσιο. Ο ναός μελετήθηκε από κατασκευαστική άποψη και εντοπίστηκαν κάποιες οικοδομικές φάσεις. Στη συνέχεια εξετάστηκε η τυπολογία και η μορφολογία του και αφού έγιναν οι απαραίτητες συγκρίσεις τεκμηριώθηκε η ακριβής χρονολόγησή του και εντάχθηκε στη ναοδομία της Χίου.
description: The subject of this thesis is the single octagon church of the Holy Apostles in the village of Pyrgi on Chios island, which the scholars used to date in 13th-14th century. In this thesis, information from the inscriptions of the wall paintings of the church were primarily utilized, determining the historical and social context of the foundation. Having analysed the structural, typological and morphological aspects of the monument, as well as the constructional phases and having related it with examples of other monuments an accurate dating was established and the monument took its place in chian architecture.
Housing trends and the role of public policy in generating homelessness : a case study of Vancouver, British Columbia
Creators: name: Gilbert, Leslie J.
Publisher: name: University of British Columbia
Year: 2010

description: This thesis analyses the extent to which municipal and provincial policy decisions over the past decade have contributed to the problem of homelessness. It examines a series of public policy actions and inactions which have resulted in losses of rental housing at the bottom end of market, ultimately leading to displacement and homelessness. The irony is that homelessness is increasing both in magnitude and visibility during a period of relative economic prosperity. The thesis addresses four research questions: 1) What are the causes of homelessness in Canada? 2) Why has the private rental sector failed to shelter people at the bottom rung? 3) In what ways have public policy decisions contributed to or alleviated homelessness, using a case study of Vancouver? 4) How can governments better meet the permanent shelter needs of the homeless population? These research questions are examined by reviewing relevant literature and interviewing key informants in three substantive theme areas, including security of tenure, affordability, and preserving the physical condition of rental housing. The research clearly demonstrates that at both the municipal and provincial levels, policy decisions favour the owners of private property over renters and policy makers are reluctant to interfere with free market principles. Both levels of government adhere to a neo-classical economic approach to the provision of housing, contending that when housing at the high end of market is added to the rental inventory, low-income people will benefit in the long term. This is not occurring in British Columbia. This study suggests that there is a range of policy options governments can employ which will intervene in the private market and remedy the inequalities of housing scarcity.
Rydberg excitons in cuprous oxide: A two-particle system with classical chaos
Creators: name: Ertl, Jan
name: Rentschler, Sebastian
name: Main, Jörg
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: When an electron in a semiconductor gets excited to the conduction band the missing electron can be viewed as a positively charged particle, the hole. Due to the Coulomb interaction electrons and holes can form a hydrogen-like bound state called exciton. For cuprous oxide a Rydberg series up to high principle quantum numbers has been observed by Kazimierczuk et al. [Nature 514, 343 (2014)] with the extension of excitons up to the $μ$m-range. In this region the correspondence principle should hold and quantum mechanics turn into classical dynamics. Due to the complex valence band structure of Cu$_2$O the classical dynamics deviates from a purely hydrogen-like behavior. The uppermost valence band in cuprous oxide splits into various bands resulting in a yellow and green exciton series. Since the system exhibits no spherical symmetry, the angular momentum is not conserved. Thus, the classical dynamics becomes non-integrable, resulting in the possibility of chaotic motion. Here we investigate the classical dynamics of the yellow and green exciton series in cuprous oxide for two-dimensional orbits in the symmetry planes as well as fully three-dimensional orbits. The analysis reveals substantial differences between the dynamics of the yellow and green exciton series. While it is mostly regular for the yellow series large regions in phase space with classical chaos do exist for the green exciton series.
description: 10 pages, 10 figures, accepted for publication in Chaos
Κοσμάς Ευμορφόπουλος Μητροπολίτης Δρυϊνουπόλεως – Βεροίας και Ναούσης – Πελαγονίας – Νικοπόλεως και Πρεβέζης (1860-1901): εκκλησιαστική και εθνική δράση, η συμβολή του στην εκπαιδευτική δραστηριότητα και την ψαλτική τέχνη
Creators: name: Ξυνάδας, Εμμανουήλ Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Κοσμάς Ευμορφόπουλος
Μητρόπολη Δρυϊνουπόλεως
Μητρόπολη Βεροίας και Ναούσης
Μητρόπολη Πελαγονίας
Μητρόπολη Νικοπόλεως και Πρεβέζης
Cosmas Evmorfopoulos
Dryinoupolis
Veria
Naoussa
Pelagonia
Nicopolis
Preveza

description: Ο Μητροπολίτης Κοσμάς Ευμορφόπουλος έζησε στα τέλη του 19ου αιώνα και υπηρέτησε στις Μητροπόλεις Δρυϊνουπόλεως, Βεροίας και Ναούσης, Πελαγονίας και Νικοπόλεως και Πρεβέζης. Από όλες τις θέσεις υποστήριξε και συνέβαλλε στην εφαρμογή του κοινοτικού συστήματος, ενδιαφέρθηκε για την προώθηση των εκπαιδευτικών ζητημάτων των επαρχιών του, αντέδρασε στις προπαγανδιστικές κινήσεις της Βουλγαρίας, της Ρουμανίας, της Σερβίας, της Ιταλίας και υποστήριξε τα δίκαια του ελληνισμού ενώπιον των διοικητικών αρχών της Οθωμανικής Αυτοκρατορίας. Μια πτυχή της προσωπικότητάς του συνδέεται με τη συμβολή του στη διάδοση της Ψαλτικής Τέχνης, την οποία υπηρέτησε με διαφόρους τρόπους. Στην Κωνσταντινούπολη συνδέθηκε με δασκάλους της εκκλησιαστικής μουσικής κοντά στους οποίους γνώρισε, τόσο την εκκλησιαστική, όσο και την ευρωπαϊκή και την εξωτερική μουσική. Ο Μητροπολίτης Κοσμάς είναι γνωστός και για το μελοποιητικό του έργο το οποίο δημοσιεύτηκε σε τρεις τόμους, το έτος 1897, με την επωνυμία Ποιμενικός Αυλός. Στον πρώτο τόμο του έργου περιλαμβάνεται θεωρητική πραγματεία για την εκμάθηση της εκκλησιαστικής μουσικής, στο δεύτερο τόμο μέλη των ακολουθιών του νυχθημέρου, μελοποιημένα από τον ίδιο, ενώ στον τρίτο τόμο περιλαμβάνονται ύμνοι και άσματα που προορίζονταν για σχολική χρήση.
description: The Bishop Cosmas Evmorfopoulos lived in the late 19th century and served in Metropolises Dryinoupoleos Veria and Naoussa, Pelagonia and Nicopolis and Preveza. From every position he advocated and contributed to the implementation of the Community system, focused on promoting the educational aspects of the provinces under his rule, reacted to the propaganda movements of Bulgaria, Romania, Serbia, Italy and supported the rights of the Greeks before the administrative authorities of the Ottoman Empire. One aspect of his personality is associated with the contribution of the spread of Chanting Art, which he served in a variety of ways. In Istanbul he was connected with the church music teachers and it was there where he met both ecclesiastical, European and foreign music. The Bishop Cosmas is well-known for his setting to music works that were published in three volumes in 1897, under the title "Shepherd Flute". In the first volume of this work one can find the theoretical dissertation on the learning of church music, in the second volume there is the chant of the daily services around the clock, set to music by himself, while the third volume includes hymns and songs intended for school use.
Phase String Theory for Doped Antiferromagnets
Creators: name: Weng, Zheng-Yu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The recent developments of the phase string theory for doped antiferromagnets will be briefly reviewed. Such theory is built upon a singular phase string effect induced by the motion of holes in a doped antiferromagnet, which as a precise property of the t-J model dictates the novel competition between the charge and spin degrees of freedom. A global phase diagram including the antiferromagnetic, superconducting, lower and upper pseudogap, and high-temperature "normal" phases, as well as a series of anomalous physical properties of these phases will be presented as the self-consistent and systematic consequences of the phase string theory.
description: 40 pages, 31 figures, a brief review appearing on March 10, 2007
Explicit Green functions for spin-orbit Hamiltonians
Creators: name: Bruening, Jochen
name: Geyler, Vladimir
name: Pankrashkin, Konstantin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81Q05, 34B27, 35J10

description: We derive explicit expressions for Green functions and some related characteristics of the Rashba and Dresselhaus Hamiltonians with a uniform magnetic field.
description: 8 pages
Detecting Sexism in German Online Newspaper Comments with Open-Source Text Embeddings (Team GDA, GermEval2024 Shared Task 1: GerMS-Detect, Subtasks 1 and 2, Closed Track)
Creators: name: Bremm, Florian
name: Blaneck, Patrick Gustav
name: Bornheim, Tobias
name: Grieger, Niklas
name: Bialonski, Stephan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Sexism in online media comments is a pervasive challenge that often manifests subtly, complicating moderation efforts as interpretations of what constitutes sexism can vary among individuals. We study monolingual and multilingual open-source text embeddings to reliably detect sexism and misogyny in German-language online comments from an Austrian newspaper. We observed classifiers trained on text embeddings to mimic closely the individual judgements of human annotators. Our method showed robust performance in the GermEval 2024 GerMS-Detect Subtask 1 challenge, achieving an average macro F1 score of 0.597 (4th place, as reported on Codabench). It also accurately predicted the distribution of human annotations in GerMS-Detect Subtask 2, with an average Jensen-Shannon distance of 0.301 (2nd place). The computational efficiency of our approach suggests potential for scalable applications across various languages and linguistic contexts.
description: 6 pages, 4 figures, 2 tables
Comparative Analysis of Box-Covering Algorithms for Fractal Networks
Creators: name: Kovács, Péter Tamás
name: Nagy, Marcell
name: Molontay, Roland
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Discrete Mathematics (cs.DM)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: F.2.0; G.2.3
subject: 05C82, 91D30, 65Y20, 68W25, 68W50, 28A80

description: Research on fractal networks is a dynamically growing field of network science. A central issue is to analyze fractality with the so-called box-covering method. As this problem is known to be NP-hard, a plethora of approximating algorithms have been proposed throughout the years. This study aims to establish a unified framework for comparing approximating box-covering algorithms by collecting, implementing, and evaluating these methods in various aspects including running time and approximation ability. This work might also serve as a reference for both researchers and practitioners, allowing fast selection from a rich collection of box-covering algorithms with a publicly available codebase.
description: The paper has been published in Applied Network Science: https://appliednetsci.springeropen.com/articles/10.1007/s41109-021-00410-6
title: Assessment of subjective emotional valence and long-lasting impact of life events
title: development and psychometrics of the Stralsund Life Event List (SEL)
titleType: Subtitle
Creators: name: König, Johanna
name: Block, Andrea
name: Becker, Matthias
name: Fenske, Kristin
name: Hertel, Johannes
name: Van der Auwera, Sandra
name: Zymara, Kathleen
name: Völzke, Henry
name: Freyberger, Harald Jürgen
name: Grabe, Hans Jörgen
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 610 Medizin und Gesundheit

description: Background: Life events (LEs) are associated with future physical and mental health. They are crucial for understanding the pathways to mental disorders as well as the interactions with biological parameters. However, deeper insight is needed into the complex interplay between the type of LE, its subjective evaluation and accompanying factors such as social support. The "Stralsund Life Event List" (SEL) was developed to facilitate this research. Methods: The SEL is a standardized interview that assesses the time of occurrence and frequency of 81 LEs, their subjective emotional valence, the perceived social support during the LE experience and the impact of past LEs on present life. Data from 2265 subjects from the general population-based cohort study "Study of Health in Pomerania" (SHIP) were analysed. Based on the mean emotional valence ratings of the whole sample, LEs were categorized as "positive" or "negative". For verification, the SEL was related to lifetime major depressive disorder (MDD; Munich Composite International Diagnostic Interview), childhood trauma (Childhood Trauma Questionnaire), resilience (Resilience Scale) and subjective health (SF-12 Health Survey). Results: The report of lifetime MDD was associated with more negative emotional valence ratings of negative LEs (OR = 2.96, p < 0.0001). Negative LEs (b = 0.071, p < 0.0001, beta = 0.25) and more negative emotional valence ratings of positive LEs (b = 3.74, p < 0.0001, beta = 0.11) were positively associated with childhood trauma. In contrast, more positive emotional valence ratings of positive LEs were associated with higher resilience (b = -7.05, p < 0.0001, beta = 0.13), and a lower present impact of past negative LEs was associated with better subjective health (b = 2.79, p = 0.001, beta = 0.05). The internal consistency of the generated scores varied considerably, but the mean value was acceptable (averaged Cronbach's alpha > 0.75). Conclusions: The SEL is a valid instrument that enables the analysis of the number and frequency of LEs, their emotional valence, perceived social support and current impact on life on a global score and on an individual item level. Thus, we can recommend its use in research settings that require the assessment and analysis of the relationship between the occurrence and subjective evaluation of LEs as well as the complex balance between distressing and stabilizing life experiences.
description: Postprints der Universität Potsdam : Humanwissenschaftliche Reihe; 704
Non-equilibrium statistical mechanics of classical nuclei interacting with the quantum electron gas
Creators: name: Wang, Yu
name: Kantorovich, Lev
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Kinetic equations governing time evolution of positions and momenta of atoms in extended systems are derived using quantum-classical ensembles within the Non-Equilibrium Statistical Operator Method (NESOM). Ions are treated classically, while their electrons quantum mechanically; however, the statistical operator is not factorised in any way and no simplifying assumptions are made concerning the electronic subsystem. Using this method, we derive kinetic equations of motion for the classical degrees of freedom (atoms) which account fully for the interaction and energy exchange with the quantum variables (electrons). Our equations, alongside the usual Newtonian-like terms normally associated with the Ehrenfest dynamics, contain additional terms, proportional to the atoms velocities, which can be associated with the electronic friction. Possible ways of calculating the friction forces which are shown to be given via complicated non-equilibrium correlation functions, are discussed. In particular, we demonstrate that the correlation functions are directly related to the thermodynamic Matsubara Green's functions, and this relationship allows for the diagrammatic methods to be used in treating electron-electron interaction perturbatively when calculating the correlation functions. This work also generalises previous attempts, mostly based on model systems, of introducing the electronic friction into Molecular Dynamics equations of atoms.
description: 18 pages
Dipole binding in a cosmic string background due to quantum anomalies
Creators: name: Giri, Pulak Ranjan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose quantum dynamics for the dipole moving in cosmic string background and show that the classical scale symmetry of a particle moving in cosmic string background is still restored even in the presence of dipole moment of the particle. However, we show that the classical scale symmetry is broken due to inequivalent quantization of the the non-relativistic system. The consequence of this quantum anomaly is the formation of bound state in the interval ξ\in(-1,1). The inequivalent quantization is characterized by a 1-parameter family of self-adjoint extension parameter Σ. We show that within the interval ξ\in(-1,1), cosmic string with zero radius can bind the dipole and the dipole does not fall into the singularity.
description: Accepted for publication in Phys. Rev. A
Conformal Ricci and Matter Collineations for Anisotropic Fluid
Creators: name: Sharif, M.
name: Tehseen, Naghmana
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the consequences of timelike and spaccelike conformal Ricci and conformal matter collineations for anisotropic fluid in the context of General Relativity. Necessary and sufficient conditions are derived for a spacetime with anisotropic fluid to admit conformal Ricci and conformal matter collineations parallel to u^a and x^a. These conditions for timelike and spacelike conformal Ricci and conformal matter collineations for anisotropic fluid reduce to the conditions of perfect fluid when the heat flux and the traceless anisotropic stress tensor vanish. Further, for $α=0$ (the conformal factor), we recover the earlier results of Ricci collineations and matter collineations in each case of timelike and spacelike conformal Ricci collineations and conformal matter collineations for the perfect fluid. Thus our results give the generalization of the results already available in the literature. It is worth noticing that the conditions of conformal matter collineations can be derived from the conditions of conformal Ricci collineations or vice versa under certain constraints.
description: 16 pages, accepted for publication in Chinese J. Physics
Suppression of High Transverse Momentum $π^0$ Spectra in Au+Au Collisions at RHIC
Creators: name: Kahana, D. E.
name: Kahana, S. H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Au+Au, $s^{1/2} = 200$ A GeV measurements at RHIC, obtained with the PHENIX, STAR, PHOBOS and BRAHMS detectors, have all indicated a suppression of neutral pion production, relative to an appropriately normalized NN level. For central collisions and vanishing pseudo-rapidity these experiments exhibit suppression in charged meson production, especially at medium to large transverse momenta. In the PHENIX experiment similar behavior has been reported for $π^0$ spectra. In a recent work on the simpler D+Au interaction, to be considered perhaps as a tune-up for Au+Au, we reported on a pre-hadronic cascade mechanism which explains the mixed observation of moderately reduced $p_\perp$ suppression at higher pseudo-rapidity as well as the Cronin enhancement at mid-rapidity. Here we present the extension of this work to the more massive ion-ion collisions. Our major thesis is that much of the suppression is generated in a late stage cascade of colourless pre-hadrons produced after an initial short-lived coloured phase. We present a pQCD argument to justify this approach and to estimate the time duration $τ_p$ of this initial phase. Of essential importance is the brevity in time of the coloured phase existence relative to that of the strongly interacting pre-hadron phase. The split into two phases is of course not sharp in time, but adequate for treating the suppression of moderate and high $p_\perp$ mesons.
description: 19 pages, 10 figures
Spin-orbit coupling driven superfluid states in optical lattices at zero and finite temperatures
Creators: name: Suthar, Kuldeep
name: Kaur, Pardeep
name: Gautam, Sandeep
name: Angom, Dilip
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate the quantum phase transitions of a two-dimensional Bose-Hubbard model in the presence of a Rashba spin-orbit coupling with and without thermal fluctuations. The interplay of single-particle hopping, strength of spin-orbit coupling, and interspin interaction leads to superfluid phases with distinct properties. With interspin interactions weaker than intraspin interactions, the spin-orbit coupling induces two finite-momentum superfluid phases. One of them is a phase-twisted superfluid that exists at low hopping strengths and reduces the domain of insulating phases. At comparatively higher hopping strengths, there is a transition from the phase-twisted to a finite momenta stripe superfluid. With interspin interactions stronger than the intraspin interactions, the system exhibits phase-twisted to ferromagnetic phase transition. At finite temperatures, the thermal fluctuations destroy the phase-twisted superfluidity and lead to a wide region of normal-fluid states. These findings can be observed in recent quantum gas experiments with spin-orbit coupling in optical lattices.
description: 10 pages, 9 figures, version accepted in Phys. Rev. A
Graphic-Card Cluster for Astrophysics (GraCCA) -- Performance Tests
Creators: name: Schive, Hsi-Yu
name: Chien, Chia-Hung
name: Wong, Shing-Kwong
name: Tsai, Yu-Chih
name: Chiueh, Tzihong
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we describe the architecture and performance of the GraCCA system, a Graphic-Card Cluster for Astrophysics simulations. It consists of 16 nodes, with each node equipped with 2 modern graphic cards, the NVIDIA GeForce 8800 GTX. This computing cluster provides a theoretical performance of 16.2 TFLOPS. To demonstrate its performance in astrophysics computation, we have implemented a parallel direct N-body simulation program with shared time-step algorithm in this system. Our system achieves a measured performance of 7.1 TFLOPS and a parallel efficiency of 90% for simulating a globular cluster of 1024K particles. In comparing with the GRAPE-6A cluster at RIT (Rochester Institute of Technology), the GraCCA system achieves a more than twice higher measured speed and an even higher performance-per-dollar ratio. Moreover, our system can handle up to 320M particles and can serve as a general-purpose computing cluster for a wide range of astrophysics problems.
description: Accepted for publication in New Astronomy
Discovery of a millisecond pulsar associated with Terzan 6
Creators: name: Gao, Shi-Jie
name: Shao, Yi-Xuan
name: Wang, Pei
name: Zhou, Ping
name: Li, Xiang-Dong
name: Zhang, Lei
name: Kania, Joseph W.
name: Lorimer, Duncan R.
name: Li, Di
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations show that globular clusters might be among the best places to find millisecond pulsars. However, the globular cluster Terzan 6 seems to be an exception without any pulsar discovered, although its high stellar encounter rate suggests that it harbors dozens of them. We report the discovery of the first radio pulsar, PSR J1750-3116A, likely associated with Terzan 6 in a search of C-band (4-8 GHz) data from the Robert C. Byrd Green Bank Telescope with a spin period of 5.33 ms and dispersion measure, DM$\simeq$ 383 ${\rm pc\,cm^{-3}}$. The mean flux density of this pulsar is approximately 3 $μ$Jy. The DM agrees well with predictions from the Galactic free electron density model, assuming a distance of 6.7 kpc for Terzan 6. PSR J1750-3116A is likely an isolated millisecond pulsar, potentially formed through dynamical interactions, considering the core-collapsed classification and the exceptionally high stellar encounter rate of Terzan 6. This is the highest radio frequency observation that has led to the discovery of a pulsar in a globular cluster to date. While L-band (1-2GHz) observations of this cluster are unlikely to yield significant returns due to propagation effects, we predict that further pulsar discoveries in Terzan 6 will be made by existing radio telescopes at higher frequencies.
description: Updated to match the published version, correcting the PSR name to PSR J1750-3116A without rounding
Ο "Αντρέας Δημακούδης" (1935) και η λογοτεχνική παρουσία του Νίκου Γαβριήλ Πεντζίκη (1929-1977)
Creators: name: Βλαχοδήμος, Δημήτρης
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Νίκος Γαβριήλ Πεντζίκης
"Αντρέας Δημακούδης"
Διακειμενικότητα
Πρόσληψη
Nikos Gabriel Pentzikis
"Andreas Dimakoudis"
Intertextuality
Reception

description: Υποστηρίζεται η θέση ότι το μυθιστόρημα "Αντρέας Δημακούδης – Ένας νέος μονάχος" του 1935 αποτελεί θεμέλιο για τον Πεντζίκη ως λογοτέχνη, καθώς η μελέτη του συγκεκριμένου έργου μας επιτρέπει να εκτιμήσουμε όλη την λογοτεχνική του πορεία. Στο Πρώτο Μέρος με απασχολεί η χρονική περίοδος μέχρι τη συγγραφή του "Αντρέα Δημακούδη" και οι προϋποθέσεις αυτής, ώστε να δούμε πώς φτάνει στα 1934-35 ο Πεντζίκης: μέσα σε ποιο περιβάλλον κινείται, ποιες συγγραφικές σχέσεις τον απασχολούν, τι κείμενα γράφει ο ίδιος, ποια πρόσωπα συμβάλλουν στο να διαμορφωθούν οι συνθήκες δημιουργίας του δικού του έργου. Στο Δεύτερο Μέρος μελετάται το βιβλίο καθεαυτό και η πρόσληψή του, τι συμβαίνει εντός του, ποια είναι τα ιδιαίτερα χαρακτηριστικά του, εκείνα που θεωρούνται ότι αναδεικνύουν τη σημασία του και εξακολουθούν να το κάνουν αξιανάγνωστο. Στο Τρίτο Μέρος τέλος, ερευνώνται οι τύχες του "Δημακούδη" μετά το 1935, ιχνηλατείται η παρουσία θεματικών μοτίβων του βιβλίου ή του ήρωά του μόνο, στο μετέπειτα έργο του Πεντζίκη. Το συμπέρασμα είναι ότι προτού γράψει το πρώτο του βιβλίο ο Πεντζίκης έχει ενδυναμωθεί από την συγγραφική σχέση του με τον Ψυχάρη και την επιρροή που άσκησε πάνω του ο Στρατής Δούκας και ο κύκλος του περ. Μακεδονικές Ημέρες. Με τη δημοσίευση του Αντρέα Δημακούδη ο Πεντζίκης εισέρχεται δυναμικά στον ελληνικό λογοτεχνικό στίβο και η παρουσία του δεν πέρασε απαρατήρητη, αλλά δημιούργησε αναμονές συνέχειας. Χωρίς την εκτίμηση αυτού του πρώτου μυθιστορήματος του συγγραφέα, η θέση του Πεντζίκη στα ελληνικά γράμματα παραμένει λειψή
description: This thesis focuses on the close study of the novel "Andreas Dimakoudis" and its importance for the whole literary presence of Nikos Gabriel Pentzikis in Modern Greek Literature. The purpose of my work is to bring to the fore the early Pentzikis and the dynamism inherent in his first book. "Andreas Dimakoudis" is put within the context of its time and an attempt is made to evaluate it in combination with other preceding Greek and European literary works, as well as to define its position within the rest of Pentzikis’ corpus and its relation to this body of work. In the first part, I concern myself with Pentzikis’ development leading up to the publication of "Andreas Dimakoudis" in 1935, specifically the intellectual preparation prior to its creation. In the second part, the critical reception of the work is examined, together with the work’s characteristics, that, in my opinion, reveal its importance for the contemporary reader. In the third part, I investigate the presence, and use of, "Andreas Dimakoudis" in Pentzikis’ literary production between 1935 and 1977, when the second and definitive form of the book is published. My conclusion is that without the evaluation of this first work, Pentzikis’ position in Modern Greek Literature remains incomplete