cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Path integrals in the physics of lattice polarons
Creators: name: Kornilovitch, Pavel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A path-integral approach to lattice polarons is developed. The method is based on exact analytical elimination of phonons and subsequent Monte Carlo simulation of self-interacting fermions. The analytical basis of the method is presented with emphasis on visualization of polaron effects, which path integrals provide. Numerical results on the polaron energy, mass, spectrum and density of states are given for short-range and long-range electron-phonon interactions. It is shown that certain long-range interactions significantly reduce the polaron mass, and anisotropic interactions enhance polaron anisotropy. The isotope effect on the polaron mass and spectrum is discussed. A path-integral approach to the Jahn-Teller polaron is developed. Extensions of the method to lattice bipolarons and to more complex polaron models are outlined.
description: 40 pages, 12 figures, to be published in "Polarons in Advanced Materials" ed. A.S. Alexandrov (Canopus Books, 2007)
Karte von Musawwarat es Sufra / Karte des Konzessionsgebietes am 4. Katarakt
Creators: name: Redaktion, Die
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2021

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Nr. 17 (2006): Der Antike Sudan
On the representation theory of the vertex algebra $L_{-5/2}(sl(4))$
Creators: name: Adamovic, Drazen
name: Perse, Ozren
name: Vukorepa, Ivana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We study the representation theory of non-admissible simple affine vertex algebra $L_{-5/2} (sl(4))$. We determine an explicit formula for the singular vector of conformal weight four in the universal affine vertex algebra $V^{-5/2} (sl(4))$, and show that it generates the maximal ideal in $V^{-5/2} (sl(4))$. We classify irreducible $L_{-5/2} (sl(4))$--modules in the category ${\mathcal O}$, and determine the fusion rules between irreducible modules in the category of ordinary modules $KL_{-5/2}$. It turns out that this fusion algebra is isomorphic to the fusion algebra of $KL_{-1}$. We also prove that $KL_{-5/2}$ is a semi-simple, rigid braided tensor category. In our proofs we use the notion of collapsing level for the affine $\mathcal{W}$--algebra, and the properties of conformal embedding $gl(4) \hookrightarrow sl(5)$ at level $k=-5/2$ from arXiv:1509.06512. We show that $k=-5/2$ is a collapsing level with respect to the subregular nilpotent element $f_{subreg}$, meaning that the simple quotient of the affine $\mathcal{W}$--algebra $W^{-5/2}(sl(4), f_{subreg})$ is isomorphic to the Heisenberg vertex algebra $M_J(1)$. We prove certain results on vanishing and non-vanishing of cohomology for the quantum Hamiltonian reduction functor $H_{f_{subreg}}$. It turns out that the properties of $H_{f_{subreg}}$ are more subtle than in the case of minimal reducition.
description: 27 pages; final version, to appear in Communications in Contemporary Mathematics
Local observation of linear-$T$ superfluid density and anomalous vortex dynamics in URu$_2$Si$_2$
Creators: name: Iguchi, Yusuke
name: Zhang, Irene P.
name: Bauer, Eric D.
name: Ronning, Filip
name: Kirtley, John R.
name: Moler, Kathryn A.
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: The heavy fermion superconductor URu$_2$Si$_2$ is a candidate for chiral, time-reversal symmetry-breaking superconductivity with a nodal gap structure. Here, we microscopically visualized superconductivity and spatially inhomogeneous ferromagnetism in URu$_2$Si$_2$. We observed linear-$T$ superfluid density, consistent with d-wave pairing symmetries including chiral d-wave, but did not observe the spontaneous magnetization expected for chiral d-wave. Local vortex pinning potentials had either four- or two-fold rotational symmetries with various orientations at different locations. Taken together, these data support a nodal gap structure in URu$_2$Si$_2$ and suggest that chirality either is not present or does not lead to detectable spontaneous magnetization.
Publishing performance art utilizing transmedia storytelling
Creators: name: Γραμματόσης, Αναστάσιος Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Queer Κίνημα
Ψηφιακή Αφήγηση
Οπτικοακουστική Παραγωγή
Queer Movement
Transmedia Storytelling
Audiovisual Production

description: This Thesis focuses on Digital Queer Storytelling, examining the background of the queer movement as well as the revolutionary tools of the digital age and the technique of Transmedia Storytelling. The main question that this project aims to address is how these new technologies can be utilized to embrace the queer narrative, one that has always been living under the shadow of mainstream culture, and potentially assist it in finally reaching broader acknowledgement and appeal. By applying the theoretical background on the independent artistic group Haus of Proletarea, which through their drag performance and political activism espouse the queer movement, an applied approach on the question above is attempted, through the implementation of widespread tools, hardware and software, resulting in the publishing of the artform through digital storytelling.
description: Αντικείμενο της Διπλωματικής Εργασίας είναι η Ψηφιακή Αφήγηση του Queer κινήματος, μέσα από την επισκόπηση της ιστορίας του και κάνοντας χρήση των επαναστατικών εργαλείων της ψηφιακής εποχής που επιτρέπουν την τεχνική της αφήγησης μέσω πολλαπλών καναλιών (transmedia storytelling). Το βασικό ερώτημα που θέλει να θίξει η συγκεκριμένη εργασία είναι το πώς οι νέες τεχνολογίες μπορούν να χρησιμοποιηθούν για να υποστηρίξουν την queer αφήγηση, που ανέκαθεν υποσκιάζεται από την εμπορική mainstream κουλτούρα, και να την βοηθήσουν να λάβει επιτέλους ευρύτερη αναγνώριση και δημοτικότητα. Εφαρμόζοντας το θεωρητικό υπόβαθρο στο ανεξάρτητο καλλιτεχνικό γκρουπ Haus of Proletarea, που μέσω της drag performance τους και του πολιτικού ακτιβισμού τους, υιοθετούν το queer κίνημα, επιχειρείται μια πρακτική προσέγγιση στο παραπάνω ερώτημα. Γίνεται χρήση ευρέως διαδεδομένων εργαλείων, λογισμικών προγραμμάτων και εξοπλισμού, με τελικό αποτέλεσμα τη δημοσίευση της εν λόγω τέχνης μέσω μιας ψηφιακής αφήγησης.
Exceeding the Manley-Rowe quantum efficiency limit in an optically pumped THz amplifier
Creators: name: Waldmueller, Ines
name: Wanke, Michael C.
name: Chow, Weng W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Using a microscopic theory based on the Maxwell-semiconductor Bloch equations, we investigate the possibility of an optically-assisted electrically-driven THz quantum cascade laser. Whereas in optical conversion schemes the power conversion efficiency is limited by the Manley-Rowe relation, the proposed optically-assisted scheme can achieve higher efficiency by coherently recovering the optical pump energy. Furthermore, due to quantum coherence effects the detrimental effects of scattering are mitigated.
MPEC 2024-T82 : 2021 TQ21
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Local constancy of dimensions of Hecke eigenspaces of Automorphic forms
Creators: name: Pande, Aftab
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We use a method of Buzzard to study p-adic families of different types of modular forms - classical, over imaginary quadratic fields and totally real fields. In the case of totally real fields of even degree, we get local constancy of dimensions of spaces of fixed slope and varying weight. For imaginary quadratic fields we obtain bounds independent of the weight on the dimensions of such spaces.
description: Revised version which appeared in Journal of Number Theory
Two interacting galaxies hiding as one, revealed by MaNGA
Creators: name: Ciraulo, Barbara Mazzilli
name: Melchior, Anne-Laure
name: Maschmann, Daniel
name: Katkov, Ivan Yu.
name: Halle, Anaëlle
name: Combes, Françoise
name: Gelfand, Joseph. D.
name: Yazeedi, Aisha Al
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Given their prominent role in galaxy evolution, it is of paramount importance to unveil galaxy interactions and merger events and to investigate the underlying mechanisms. The use of high-resolution data makes it easier to identify merging systems, but it can still be challenging when the morphology does not show any clear galaxy-pair or gas bridge. Characterising the origin of puzzling kinematic features can help to reveal complicated systems. Here, we present a merging galaxy, MaNGA 1-114955, in which we highlighted the superimposition of two distinct rotating discs along the line of sight. These counter-rotating objects both lie on the star-forming main sequence but display perturbed stellar velocity dispersions. The main galaxy presents off-centred star formation as well as off-centred high-metallicity regions supporting the scenario of recent starbursts, while the secondary galaxy hosts a central starburst which coincides with an extended radio emission, in excess with respect to star formation expectations. Stellar mass as well as dynamical mass estimates agree towards a mass ratio within the visible radius of 9:1 for these interacting galaxies. We suggest we are observing a pre-coalescence stage of a merger. The primary galaxy has accreted gas through a past first pericentre passage about 1 Gyr ago, and more recently from the secondary gas-rich galaxy, which exhibits an underlying active galactic nucleus (AGN). Our results demonstrate how a galaxy can hide another one and the relevance of a multi-component approach to study ambiguous systems. We anticipate our method to be efficient at unveiling the mechanisms taking place in a sub-sample of galaxies observed by the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, all exhibiting kinematic features of puzzling origin in their gas emission lines.
description: 13 pages, 14 figures. Accepted for publication in Astronomy and Astrophysics
F-term uplifting via consistent D-terms
Creators: name: Lalak, Z.
name: Eyton-Williams, O. J.
name: Matyszkiewicz, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The issue of fine-tuning necessary to achieve satisfactory degree of hierarchy between moduli masses, the gravitino mass and the scale of the cosmological constant has been revisited in the context of supergravities with consistent D-terms. We have studied (extended) racetrack models where supersymmetry breaking and moduli stabilisation cannot be separated from each other. We show that even in such cases the realistic hierarchy can be achieved on the expense of a single fine-tuning. The presence of two condensates changes the role of the constant term in the superpotential, W_0, and solutions with small vacuum energy and large gravitino mass can be found even for very small values of W_0. Models where D-terms are allowed to vanish at finite vevs of moduli fields - denoted `cancellable' D-terms - and the ones where D-terms may vanish only at infinite vevs of some moduli - denoted `non-cancellable' - differ markedly in their properties. It turns out that the tuning with respect to the Planck scale required in the case of cancellable D-terms is much weaker than in the case of non-cancellable ones. We have shown that, against intuition, a vanishing D-term can trigger F-term uplifting of the vacuum energy due to the stringent constraint it imposes on vacuum expectation values of charged fields. Finally we note that our models only rely on two dimensionful parameters: M_P and W_0.
description: 10 pages, 2 figures, plain Latex, references added
Porträt
Creators: name: Lohwasser, Angelika
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2021

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Nr. 17 (2006): Der Antike Sudan
On smoothable surgery for 4-manifolds
Creators: name: Khan, Qayum
Publisher: name: arXiv
Year: 2007
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 57R65, 57N70

description: Under certain homological hypotheses on a compact 4-manifold, we prove exactness of the topological surgery sequence at the stably smoothable normal invariants. The main examples are the class of finite connected sums of 4-manifolds with certain product geometries. Most of these compact manifolds have non-vanishing second mod 2 homology and have fundamental groups of exponential growth, which are not known to be tractable by Freedman-Quinn topological surgery. Necessarily, the *-construction of certain non-smoothable homotopy equivalences requires surgery on topologically embedded 2-spheres and is not attacked here by transversality and cobordism.
description: 18 pages, separated into two journal submissions
Supplementary Information: Medium-assisted tumbling controls bacteria exploration in a complex-fluid.
Creators: name: Urra, Héctor Ignacio
name: Darnige, Thierry
name: Benoit-Gonin, Xavier
name: LAURENT, Justine
name: Dawson, Angela
name: C.K. Poon, Wilson
name: CLEMENT, Eric
Publisher: name: Zenodo
Year: 2025

description: Supplementary material containing protocols for culture of wild-type and smooth-runner bacteria, preparation of Carbopol mixtures as a motility medium for swimming bacteria, along with rheological and morphological characterization of Carbopol mixtures.
MPEC 2024-T83 : 2022 GT2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
An ensemble approach to the analysis of weighted networks
Creators: name: Ahnert, S. E.
name: Garlaschelli, D.
name: Fink, T. M.
name: Caldarelli, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We present a new approach to the calculation of measures in weighted networks, based on the translation of a weighted network into an ensemble of edges. This leads to a straightforward generalization of any measure defined on unweighted networks, such as the average degree of the nearest neighbours, the clustering coefficient, the `betweenness', the distance between two nodes and the diameter of a network. All these measures are well established for unweighted networks but have hitherto proven difficult to define for weighted networks. Further to introducing this approach we demonstrate its advantages by applying the clustering coefficient constructed in this way to two real-world weighted networks.
description: 4 pages 3 figures
Review of Recent Measurements of the Sides of the CKM Unitarity Triangle
Creators: name: Mancinelli, Giampiero
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We give a review of the status of the global effort to measure the sides of the CKM Unitarity Triangle.
description: 9 pages, 10 postscript figures, presented at BEACH2006
Large annihilators in Cayley-Dickson algebras II
Creators: name: Biss, Daniel K.
name: Christensen, J. Daniel
name: Dugger, Daniel
name: Isaksen, Daniel C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Rings and Algebras (math.RA)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We establish many previously unknown properties of zero-divisors in Cayley-Dickson algebras. The basic approach is to use a certain splitting that simplifies computations surprisingly.
description: Updated references. Rearranged some parts in order to make the article more self-contained
„Der Nubier“ (Pinkas) – Visuelle Poesie in einem Graffito aus Semna
Creators: name: Morenz, Ludwig D.
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2021

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Nr. 17 (2006): Der Antike Sudan
MPEC 2024-T84 : 2022 UX4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Entanglement and local information access for graph states
Creators: name: Markham, Damian
name: Miyake, Akimasa
name: Virmani, Shashank
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We exactly evaluate a number of multipartite entanglement measures for a class of graph states, including d-dimensional cluster states (d = 1,2,3), the Greenberger-Horne-Zeilinger states, and some related mixed states. The entanglement measures that we consider are continuous, `distance from separable states' measures, including the relative entropy, the so-called geometric measure, and robustness of entanglement. We also show that for our class of graph states these entanglement values give an operational interpretation as the maximal number of graph states distinguishable by local operations and classical communication (LOCC), as well as supplying a tight bound on the fixed letter classical capacity under LOCC decoding.
description: 8 pages, 4 figures, to appear in the special issue of New J. Phys. on measurement-based quantum information processing
Dark Matter Halos of Disk Galaxies: Constraints from the Tully-Fisher Relation
Creators: name: Gnedin, Oleg Y.
name: Weinberg, David H.
name: Pizagno, James
name: Prada, Francisco
name: Rix, Hans-Walter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate structural properties of dark matter halos of disk galaxies in LCDM cosmology, using a well-defined sample of 81 disk-dominated galaxies from the SDSS redshift survey. We model the mass-velocity and fundamental plane relations of these galaxies, which are constructed from the galaxy stellar mass, disk scale length, and optical Halpha rotation velocity at 2.2 scale lengths. We calculate a sequence of model galaxy populations, defined by the distribution of the stellar disk-to-total mass fraction, m_d. We include the effect of adiabatic contraction of dark matter halos in response to condensation of baryons. We find that models with constant m_d underpredict the intrinsic scatter of the TF and FP relations and predict an (unobserved) strong correlation between TF residuals. Introducing a scatter of disk mass fractions and allowing the mean value m_d to scale with the stellar surface density significantly improves observational match of both the slope and intercept of the TF relation and reduces the predicted residual correlation enough to be consistent with the data. Our best-fit models with a Kroupa stellar IMF over-produce the galaxy stellar mass function and predict the virial r-band mass-to-light ratios, M_vir/L_r, systematically lower than those inferred from galaxy-galaxy weak lensing and satellite dynamics. We investigate three possible solutions to these problems: (1) ignoring the effects of adiabatic contraction, (2) adopting a ``light'' stellar IMF, or (3) considering the lower halo concentrations predicted for a low cosmological power spectrum normalization. Any of these solutions yields acceptable residual correlations and relieves most of the observational tension between the TF relation and the galaxy stellar mass function (abridged).
description: 20 pages, submitted to ApJ
Determination of the critical exponents in dissipative phase transitions: Coherent anomaly approach
Creators: name: Jin, Jiasen
name: He, Wen-Bin
name: Iemini, Fernando
name: Ferreira, Diego
name: Wang, Ying-Dan
name: Chesi, Stefano
name: Fazio, Rosario
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a generalization of the coherent anomaly method to extract the critical exponents of a phase transition occurring in the steady-state of an open quantum many-body system. The method, originally developed by Suzuki [J. Phys. Soc. Jpn. {\bf 55}, 4205 (1986)] for equilibrium systems, is based on the scaling properties of the singularity in the response functions determined through cluster mean-field calculations. We apply this method to the dissipative transverse-field Ising model and the dissipative XYZ model in two dimensions obtaining convergent results already with small clusters.
description: Accepted version, 9 pages, 7 figures
Supplementary Information: Medium-assisted tumbling controls bacteria exploration in a complex-fluid.
Creators: name: Urra, Héctor
name: Darnige, Thierry
name: Benoit-Gonin, Xavier
name: LAURENT, Justine
name: Dawson, Angela
name: C.K. Poon, Wilson
name: CLEMENT, Eric
Publisher: name: Zenodo
Year: 2025

description: Supplementary material containing protocols for culture of wild-type and smooth-runner bacteria, preparation of Carbopol mixtures as a motility medium for swimming bacteria, along with rheological and morphological characterization of Carbopol mixtures.
Θεοδώρου Προδρόμου Ιστορικά Ποιήματα III, IV, V, VI: η εκστρατεία του Ιωάννη Β΄ Κομνηνού στην Ανατολή
Creators: name: Βαρελά, Μαρία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Θεόδωρος Πρόδρομος
Ιστορικά Ποιήματα
Ερμηνευτικός Σχολιασμός
Ιωάννης Β΄ Κομνηνός
Theodore Prodromos
Historical Poems
Commentary
John II Komnenos

description: Το θέμα της παρούσας Διπλωματικής Μεταπτυχιακής Εργασίας είναι η ανάλυση και ο σχολιασμός των Ιστορικών Ποιημάτων III-VI του Θεοδώρου Προδρόμου που έχουν ως θέμα την εκστρατεία του Ιωάννη Β΄ Κομνηνού στην Κασταμόνα κατά τα έτη 1130-1133. Στο πρώτο μέρος παρουσιάζονται τα γραμματολογικά στοιχεία (οι λογοτεχνικές τάσεις τον 12ο αιώνα, η ζωή και το έργο του ποιητή), το λογοτεχνικό και κοινωνικό πλαίσιο της συγγραφής (θέατρα, λογοτεχνικοί κύκλοι, αυτοκρατορική προπαγάνδα), ο κύκλος των ποιημάτων για την εκστρατεία και τα λογοτεχνικά τους είδη. Επιπλέον εξετάζεται η γλώσσα και η μετρική των ποιημάτων. Το δεύτερο μέρος περιλαμβάνει το καθαυτό ερμηνευτικό υπόμνημα. Βασικός άξονας σχολιασμού είναι το περιεχόμενο σε σχέση με τον στόχο κάθε ποιήματος: παρουσίαση των ιστορικών γεγονότων (III), τα αποτελέσματα της εκστρατείας, ο έπαινος του αυτοκράτορα και ο ψόγος των εχθρών (IV), παρακλητικός λόγος, για να επιβεί ο αυτοκράτορας στο άρμα (V), ο θρίαμβος (VI). Εξετάζονται τα εκφραστικά μέσα και η ρητορική, το ύφος, η μετρική, οι ιστορικές πληροφορίες και οι έμμεσες αναφορές σε προγενέστερα λογοτεχνικά κείμενα σε συνάρτηση με τη σύνθεση του πορτραίτου του Ιωάννη Β΄ και την αυτοκρατορική προπαγάνδα.
description: The topic of this Master Thesis is the analysis and the running commentary of the Historical Poems III-VI of Theodore Prodromos. Their subject is the military campaign against Kastamonu during 1130-1133 A.D. In the first part are presented the literary elements (literary trends in the 12th century Byzantium, the poet’s life and work), the literary and social context of literature (the so-called- theatron, the literary circles, the imperial propaganda), the group of the Historical Poems for the military campaign (III-VI) and the literary genres. Furthermore, are examined the language and the metrics of the poems. The second part comprehends the per se hermeneutical running commentary. The principal axis of the commentary is the content concerning about the purpose of each poem: III, exposition of the historical events; IV, the consequences of the military campaign; the praise (enkōmion) of the emperor; the invective (psogos) against the enemies; V, the begging “speech”, that the personified city of New Rome addresses to the emperor in order to go aboard the triumphal chariot; VI, the description (ekphrasis) of the triumph. The literary features, the rhetoric, the style of expression, the metrics, the historical data and the implicit allusion to the previous literary works are examined in regard to the composition of John’s II Komnenos’ portrait and the imperial propaganda.
Bernstein Theorems for Space-like Graphs with Parallel Mean Curvature and Controlled Growth
Creators: name: Dong, Yuxin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C40, 58E20

description: In this paper, we obtain an Ecker-Huisken type result for entire graphs with parallel mean curvature.
description: 12 pages
MPEC 2024-T85 : 2023 WS
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Nonlinear electric conductivity and THz-induced charge transport in graphene
Creators: name: Sato, Shunsuke A.
name: Rubio, Angel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Based on the quantum master equation approach, the nonlinear electric conductivity of graphene is investigated under static electric fields for various chemical potential shifts. The simulation results show that, as the field strength increases, the effective conductivity is firstly suppressed, reflecting the depletion of effective carriers due to the large displacement in the Brillouin zone caused by the strong field. Then, as the field strength exceeds $1$~MV/m, the effective conductivity increases, overcoming the carrier depletion via the Landau--Zener tunneling process. Based on the nonlinear behavior of the conductivity, the charge transport induced by few-cycle THz pulses is studied to elucidate the ultrafast control of electric current in matter.
Flows of G_2 Structures, I
Creators: name: Karigiannis, Spiro
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C44

description: This is a foundational paper on flows of G_2 Structures. We use local coordinates to describe the four torsion forms of a G_2 Structure and derive the evolution equations for a general flow of a G_2 Structure on a 7-manifold. Specifically, we compute the evolution of the metric, the dual 4-form, and the four independent torsion forms. In the process we obtain a simple new proof of a theorem of Fernandez-Gray. As an application of our evolution equations, we derive an analogue of the second Bianchi identity in G_2-geometry which appears to be new, at least in this form. We use this result to derive explicit formulas for the Ricci tensor and part of the Riemann curvature tensor in terms of the torsion. These in turn lead to new proofs of several known results in G_2 geometry.
description: 50 pages, no figures. Minor rewrites. References added and corrected. For Version 3: Minor revisions and clarifications. This final version is a longer, more detailed version of the shorter paper to appear in the Quarterly Journal of Mathematics
Browselite: A Private Data Saving Solution for the Web
Creators: name: Kelton, Conor
name: Varvello, Matteo
name: Aucinas, Andrius
name: Livshits, Benjamin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The median webpage has increased in size by more than 80% in the last 4 years. This extra complexity allows for a rich browsing experience, but it hurts the majority of mobile users which still pay for their traffic. This has motivated several data-saving solutions, which aim at reducing the complexity of webpages by transforming their content. Despite each method being unique, they either reduce user privacy by further centralizing web traffic through data-saving middleboxes or introduce web compatibility (Webcompat) issues by removing content that breaks pages in unpredictable ways. In this paper, we argue that data-saving is still possible without impacting either users privacy or Webcompat. Our main observation is that Web images make up a large portion of Web traffic and have negligible impact on Webcompat. To this end we make two main contributions. First, we quantify the potential savings that image manipulation, such as dimension resizing, quality compression, and transcoding, enables at large scale: 300 landing and 880 internal pages. Next, we design and build Browselite, an entirely client-side tool that achieves such data savings through opportunistically instrumenting existing server-side tooling to perform image compression, while simultaneously reducing the total amount of image data fetched. The effect of Browselite on the user experience is quantified using standard page load metrics and a real user study of over 200 users across 50 optimized web pages. Browselite allows for similar savings to middlebox approaches, while offering additional security, privacy, and Webcompat guarantees.
description: 12 pages, 10 Figures
Photon counting statistics using a digital oscilloscope
Creators: name: Ricci, M. L. Martinez
name: Mazzaferri, J.
name: Bragas, A. V.
name: Martinez, O. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a photon counting experiment designed for an undergraduate physics laboratory. The statistics of the number of photons of a pseudo-thermal light source is studied in two limiting cases: much longer and much shorter than the coherence time, giving Poisson and Bose-Einstein distributions, respectively. The experiment can be done in a reasonable time using a digital oscilloscope without the need of counting boards. The use of the oscilloscope has the advantage of allowing the storage of the data for further processing. The stochastic nature of the detection phenomena adds additional value because students are forced to do data processing and analysis.
description: 13 pages, 9 Figures, 1 Table, Original File Type: MS-Word, Submitted File type: pdf - Last Version: Whole paper improvement, references added
Symbolic dynamics for the anisotropic $N$-centre problem at negative energies
Creators: name: Barutello, Vivina
name: Canneori, Gian Marco
name: Terracini, Susanna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 70F10, 70G75 (Primary) 70F16, 37N05 (Secondary)

description: The planar $N$-centre problem describes the motion of a particle moving in the plane under the action of the force fields of $N$ fixed attractive centres: \[ \ddot{x}(t)=\sum_{j=1}^N\nabla V_j(x-c_j). \] In this paper we prove symbolic dynamics at slightly negative energy for an $N$-centre problem where the potentials $V_j$ are positive, anisotropic and homogeneous of degree $-α_j$: \[ V_j(x)=|x|^{-α_j}V_j\left(\frac{x}{|x|}\right). \] The proof is based on a broken geodesics argument and trajectories are extremals of the Maupertuis' functional. Compared with the classical $N$-centre problem with Kepler potentials, a major difficulty arises from the lack of a regularization of the singularities. We will consider both the collisional dynamics and the non collision one. Symbols describe geometric and topological features of the associated trajectory.
The Remarkable Stability of Probable Black Hole Low-Mass X-ray Binaries in Nearby Galaxies
Creators: name: Irwin, Jimmy A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The most luminous X-ray sources in nearby elliptical galaxies are likely black hole low-mass X-ray binaries (BHLMXBs). In the Milky Way, such systems are always transient, and with the exception of GRS1915+105 have burst durations on the order of weeks or months. However, the low duty cycle of short-duration outburst BHLMXBs makes it improbable that any one source would be caught in an outburst during a single snapshot observation. Long-duration outburst BHLMXBs, although much rarer, would be detectable in a series of snapshot observations separated by several years. Our analysis of multi-epoch Chandra observations of the giant elliptical galaxies NGC1399 and M87 separated by 3.3 and 5.3 yr, respectively, finds that all 37 luminous (>8 x 10^38 ergs/s) X-ray sources that were present in the first epoch observations were still in outburst in all of the following observations. Many of these probable long-duration outburst BHLMXBs reside within globular clusters of the galaxies. Conversely, no definitive short-duration outburst BHLMXBs were detected in any of the observations. This places an upper limit on the ratio of short--to--long-duration outbursters that is slightly lower, but consistent with what is seen in the Milky Way. The fact that none of the luminous sources turned off between the first and last epochs places a 95 per cent lower limit of 50 yr on the mean burst duration of the long-duration outburst sources. The most likely scenario for the origin of these sources is that they are long-period (>30 d) black hole binaries with a red giant donor, much like GRS1915+105. However, unlike GRS1915+105, most of the sources show only modest variability from epoch to epoch.
description: 11 pages, 5 figures, accepted by MNRAS
Simultaneous loss and excitation of projectile electrons in relativistic collisions of U$^{90+}$(1s$^2$) ions with atoms
Creators: name: Najjari, B.
name: Voitkiv, A. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study relativistic collisions between helium-like uranium ions initially in the ground state and atoms in which, in a single collision event, one of the electrons of the ion is emitted and the other is transferred into an excited state of the residual hydrogen-like ion. We consider this two-electron process at not very high impact energies, where the action of the atom on the electrons of the ion can be well approximated as occurring solely due to the interaction with the nucleus of the atom and, hence, the process can be regarded as a four-body problem. Using the independent electron model we show that a very substantial improvement in the calculated cross sections is obtained if, instead of the first order approximation, the relativistic symmetric eikonal and continuum-distorted-wave-eikonal-initial-state models are employed to describe the single-electron probabilities for the excitation and loss, respectively.
description: 12 pages, 2 figures, submitted to J.Phys. B
A review of flywheel energy storage systems: state of the art and opportunities
Creators: name: Li, Xiaojun
name: Palazzolo, Alan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Thanks to the unique advantages such as long life cycles, high power density, minimal environmental impact, and high power quality such as fast response and voltage stability, the flywheel/kinetic energy storage system (FESS) is gaining attention recently. There is noticeable progress made in FESS, especially in utility, large-scale deployment for the electrical grid, and renewable energy applications. This paper gives a review of the recent developments in FESS technologies. Due to the highly interdisciplinary nature of FESSs, we survey different design approaches, choices of subsystems, and the effects on performance, cost, and applications. This review focuses on the state of the art of FESS technologies, especially for those who have been commissioned or prototyped. We also highlighted the opportunities and potential directions for the future development of FESS technologies.
Was there a Co-regency in the 25th Dynasty?
Creators: name: Kahn, Dan'el
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2021

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Nr. 17 (2006): Der Antike Sudan
Multisite campaign on the open cluster M67. II. Evidence for solar-like oscillations in red giant stars
Creators: name: Stello, D.
name: Bruntt, H.
name: Kjeldsen, H.
name: Bedding, T. R.
name: Arentoft, T.
name: Gilliland, R. L.
name: Nuspl, J.
name: Kim, S. -L.
name: Kang, Y. B.
name: Koo, J. -R.
name: Lee, J. -A.
name: Sterken, C.
name: Lee, C. -U.
name: Jensen, H. R.
name: Jacob, A. P.
name: Szabo, R.
name: Frandsen, S.
name: Csubry, Z.
name: Dind, Z. E.
name: Bouzid, M. Y.
name: Dall, T. H.
name: Kiss, L. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Measuring solar-like oscillations in an ensemble of stars in a cluster, holds promise for testing stellar structure and evolution more stringently than just fitting parameters to single field stars. The most ambitious attempt to pursue these prospects was by Gilliland et al. (1993) who targeted 11 turn-off stars in the open cluster M67 (NGC 2682), but the oscillation amplitudes were too small (<20micromag) to obtain unambiguous detections. Like Gilliland et al. (1993) we also aim at detecting solar-like oscillations in M67, but we target red giant stars with expected amplitudes in the range 50-500micromag and periods of 1 to 8 hours. We analyse our recently published photometry measurements, obtained during a six-week multisite campaign using nine telescopes around the world. The observations are compared with simulations and with estimated properties of the stellar oscillations. Noise levels in the Fourier spectra as low as 27micromag are obtained for single sites, while the combined data reach 19micromag, making this the best photometric time series of an ensemble of red giant stars. These data enable us to make the first test of the scaling relations (used to estimate frequency and amplitude) with an homogeneous ensemble of stars. The detected excess power is consistent with the expected signal from stellar oscillations, both in terms of its frequency range and amplitude. However, our results are limited by apparent high levels of non-white noise, which cannot be clearly separated from the stellar signal.
description: 12 pages, 10 figures. Accepted for publication in MNRAS
Επισκόπηση στην Ευρωπαϊκή Ρευστότητα μέσω Ανάλυσης Παραγόντων
Creators: name: Τζάτσης, Δημήτριος Δήμου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Ρευστότητα
Ανάλυση Παραγόντων
Ευρώπη
Liquidity
Factor Analysis
Europe

description: Η παρούσα διπλωματική εργασία προσπαθεί να εξάγει κάποια συμπεράσματα για την ρευστότητα εντός των τειχών της Ευρώπης έπειτα από μια επισκόπηση που γίνεται στις υπάρχουσες οικονομικές αναλύσεις διαχρονικά, δίνοντας εν τέλει μεγαλύτερο βάρος στην ανάλυση παραγόντων. Επεξηγώντας λεπτομερώς τις έννοιες της ρευστότητας, της Ευρωπαϊκής Ένωσης και αναφέροντας την θεωρία της ανάλυσης παραγόντων καλύπτεται το περίβλημα ώστε να γίνει εμφανές, πώς οι διάφορες έρευνες που εμπεριέχουν αυτά τα τρία διαφορετικά μέρη τα συνδυάζουν με τέτοιο τρόπο ώστε να αναδύονται στην επιφάνεια χρήσιμα αποτελέσματα για την οικονομία και τρόπο άσκησης οικονομικών πολιτικών.
description: This Thesis seeks to draw some conclusions about liquidity within the walls of Europe following an overview of existing economic analyses over time, ultimately giving greater weight to the analysis of factors. In explaining in detail the concepts of liquidity, the European Union and mentioning the theory of factor analysis, the enclosure is covered to make it clear that the various surveys involving these three different parts combine them in such a way that useful results for the economy emerge on the surface and how to pursue economic policies.
Lexical elicitation: Feelings and emotions
Creators: name: Palacio, Frank
name: Björklund, Anna
name: Elias, Alexander
name: López Márquez, Wendy
name: Montaño Ramírez, Tzintia
name: Robertson, Allegra
name: Wellstood, Zachary
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: cab

description: Focuses on verbs, nouns, and adjectives associated with emotions, particularly exploring the various connotations of these lexical items and the contexts in which they are used.
MPEC 2024-T86 : 2024 TJ1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 TJ1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Discovery of Beryllium in White Dwarfs Polluted by Planetesimal Accretion
Creators: name: Klein, Beth
name: Doyle, Alexandra E.
name: Zuckerman, B.
name: Dufour, P.
name: Blouin, Simon
name: Melis, Carl
name: Weinberger, Alycia J.
name: Young, Edward D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The element beryllium is detected for the first time in white dwarf stars. This discovery in the spectra of two helium-atmosphere white dwarfs was made possible only because of the remarkable overabundance of Be relative to all other elements, heavier than He, observed in these stars. The measured Be abundances, relative to chondritic, are by far the largest ever seen in any astronomical object. We anticipate that the Be in these accreted planetary bodies was produced by spallation of one or more of O, C, and N in a region of high fluence of particles of MeV or greater energy.
description: 23 pages, 11 figures, 9 tables, v2: revised, accepted for publication in ApJ
Zur Problematik der Lesung des Königsnamens Pi(anch)i
Creators: name: Zibelius-Chen, Karola
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2021

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Nr. 17 (2006): Der Antike Sudan
Pairing without Superfluidity: The Ground State of an Imbalanced Fermi Mixture
Creators: name: Schunck, C. H.
name: Shin, Y.
name: Schirotzek, A.
name: Zwierlein, M. W.
name: Ketterle, W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Radio-frequency spectroscopy is used to study pairing in the normal and superfluid phases of a strongly interacting Fermi gas with imbalanced spin populations. At high spin imbalances the system does not become superfluid even at zero temperature. In this normal phase full pairing of the minority atoms is observed. This demonstrates that mismatched Fermi surfaces do not prevent pairing but can quench the superfluid state, thus realizing a system of fermion pairs that do not condense even at the lowest temperature.
title: Gemeindechronik Elgg 1918
Creators: name: (:Unkn) Unknown
Publisher: name: Zentralbibliothek Zürich
Year: 1919
Subjects: subject: 300 Sozialwissenschaften
subject: 900 Geschichte und Geografie::940 Geschichte Europas::949 Geschichte anderer Teile Europas
subject: Elgg
subject: Ortschronik
subject: Geschichte

description: Mit Beilage: Zeitungsausschnitt zur Ankunft von ca. 30 Streikenden, die sich beim Portal der Weberei postierten.
Angular correlation as a novel probe of supermassive primordial black holes
Creators: name: Shinohara, Takumi
name: Suyama, Teruaki
name: Takahashi, Tomo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the clustering property of primordial black holes (PBHs) in a scenario where PBHs can explain the existence of supermassive black holes (SMBHs) at high redshifts. We analyze the angular correlation function of PBHs originating from fluctuations of a spectator field which can be regarded as a representative model to explain SMBHs without conflicting with the constraint from the spectral distortion of cosmic microwave background. We argue that the clustering property of PBHs can give a critical test for models with PBHs as the origin of SMBHs and indeed show that the spatial distribution of PBHs in such a scenario is highly clustered, which suggests that those models may be disfavored from observations of SMBHs although a careful comparison with observational data would be necessary.
description: 27 pages, 8 figures, References updated and some comments are added