cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Microsecond resolution of quasiparticle tunneling in the single-Cooper-pair-transistor
Creators: name: Ferguson, A. J.
name: Court, N. A.
name: Hudson, F. E.
name: Clark, R. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present radio-frequency measurements on a single-Cooper-pair-transistor in which individual quasiparticle poisoning events were observed with microsecond temporal resolution. Thermal activation of the quasiparticle dynamics is investigated, and consequently, we are able to determine energetics of the poisoning and un-poisoning processes. In particular, we are able to assign an effective quasiparticle temperature to parameterize the poisoning rate.
description: 4 pages, 4 figs
title: Size bias in refinitiv ESG data
Creators: name: Dobrick, Juris
name: Klein, Christian
name: Zwergel, Bernhard
Publisher: name: Universität Kassel
Year: 2023
Subjects: subject: firm size bias
subject: ESG ratings
subject: refinitiv
subject: corporate sustainability
subject: ESG integration
subject: best-in-class
subject: 330
subject: Daten
subject: Bias
subject: Rating
subject: Nachhaltigkeit
subject: Vereinte Nationen. Generalversammlung: Resolution 70/1 (2015)

description: Stiftung Mercator for a project entitled 'Wissenschaftsplattform Sustainable Finance' (Rahmenprogramm Sustainable Finance, grant number 19026202).
Disks around young stars with VLTI/MIDI
Creators: name: van Boekel, Roy
name: Abraham, Peter
name: Correia, Serge
name: de Koter, Alex
name: Dominik, Carsten
name: Dutrey, Anne
name: Henning, Thomas
name: Kospal, Agnes
name: Lachaume, Regis
name: Leinert, Christoph
name: Linz, Hendrik
name: Min, Michiel
name: Mosoni, Laszlo
name: Preibisch, Thomas
name: Quanz, Sascha
name: Ratzka, Thorsten
name: Schegerer, Alexander
name: Waters, Rens
name: Wolf, Sebastian
name: Zinnecker, Hans
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on observations of circumstellar disks around young stars that have been obtained with the MIDI instrument, which is mounted on the VLT Interferometer and operates in the 10 micrometer atmospheric window. The maximum spatial resolution of 5 milli-arcsec corresponds to sub-AU scales at the distance to nearby star formation regions. Thus, we can study the disks on the spatial scales at which important processes occur, such as accretion, dust processing, and planet formation. The main results obtained so far can be summarized as follows: 1. The measured interferometric visibilities are in good qualitative agreement with those predicted by models of circumstellar disks. In particular, a predicted correlation between the strength of the far-infrared excess and the spatial structure of the disk is confirmed by direct measurements; 2. In several objects strong evidence for deviations from circular symmetry is present, indicating that an inclined disk is indeed the dominant component seen in the mid-infrared; 3. The dust properties are not uniform over the disk, but are instead a strong function of distance to the central star. The dust in the innermost disk regions is observed to be more ``processed'' than the dust further out, both in Herbig Ae star disks and in those around T-Tauri stars.
description: 19 pages, 12 figures, invited talk at SPIE conference "Astronomical telescopes and instrumentation", Orlando, may 2006
Optimal unambiguous state discrimination of two density matrices: A second class of exact solutions
Creators: name: Raynal, Philippe
name: Lütkenhaus, Norbert
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the Unambiguous State Discrimination (USD) of two mixed quantum states. We study the rank and the spectrum of the elements of an optimal USD measurement. This naturally leads to a partial fourth reduction theorem. This theorem shows that either the failure probability equals its overall lower bound given in term of the fidelity or a two-dimensional subspace can be split off from the original Hilbert space. We then use this partial reduction theorem to derive the optimal solution for any two equally probable Geometrically Uniform (GU) states $ρ_0$ and $ρ_1=Uρ_0 U^\dagger$, $U^2={\openone}$, in a four-dimensional Hilbert space. This represents a second class of analytical solutions for USD problems that cannot be reduced to some pure state cases. We apply our result to answer two questions that are relevant in implementations of the Bennett and Brassard 1984 quantum key distribution protocol using weak coherent states.
description: final published version: 18 pages, 5 figures. to appear in PRA
New symmetries from old: exploiting lie algebra structure to determine infinitesimal symmetries of differential equations
Creators: name: Boulton, Alan
Publisher: name: University of British Columbia
Year: 2008

description: We give a method for using explicitly known Lie symmetries of a system of differential equations to help find more symmetries of the system. A Lie (or infinitesimal) symmetry of a system of differential equations is a transformation of its dependent and independent variables, depending on continuous parameters, which maps any solution of the system to another solution of the same system. Infinitesimal Lie symmetries of a system of differential equations arise as solutions of a related system of linear homogeneous partial differential equations called infinitesimal determining equations. The importance of symmetries in applications has prompted the development of many software packages to derive and attempt to integrate infinitesimal determining equations. For a given system of differential equations we usually have a priori explicit knowledge of many symmetries of the system because of their simple form or the physical origin of the system. Current methods for finding symmetries do not incorporate this a priori information. Our method uses such information to simplify the problem of finding the remaining unknown symmetries by exploiting the Lie algebra structure of the solution space of the infinitesimal determining equations. We illustrate our method for simplifying infinitesimal determining systems by applying it to three well known test problems: the linear heat equation; Laplace's equation; and a class of nonlinear diffusion equations. Our method uses the inspectional symmetries of each of these differential equations to determine the equation's remaining symmetries. In these cases the method is so effective that the simplified determining systems for the unknown symmetries are just linear (algebraic) equations. Finally we indicate that it is possible to obtain determining equations for the infinitesimal generators of various subalgebras of a Lie symmetry algebra specified by infinitesimal determining equations. In particular we prove that the determining equations for the centre of the algebra can always be obtained.
Deep Learning and Crystal Plasticity: A Preconditioning Approach for Accurate Orientation Evolution Prediction
Creators: name: Saidi, Peyman
name: Pirgazi, Hadi
name: Sanjari, Mehdi
name: Tamimi, Saeed
name: Mohammadi, Mohsen
name: Beland, Laurent K.
name: Daymond, Mark R.
name: Tamblyn, Isaac
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Efficient and precise prediction of plasticity by data-driven models relies on appropriate data preparation and a well-designed model. Here we introduce an unsupervised machine learning-based data preparation method to maximize the trainability of crystal orientation evolution data during deformation. For Taylor model crystal plasticity data, the preconditioning procedure improves the test score of an artificial neural network from 0.831 to 0.999, while decreasing the training iterations by an order of magnitude. The efficacy of the approach was further improved with a recurrent neural network. Electron backscattered (EBSD) lab measurements of crystal rotation during rolling were compared with the results of the surrogate model, and despite error introduced by Taylor model simplifying assumptions, very reasonable agreement between the surrogate model and experiment was observed. Our method is foundational for further data-driven studies, enabling the efficient and precise prediction of texture evolution from experimental and simulated crystal plasticity results.
description: 15 pages, 6 figures
Λατρείες στη Λέσβο κατά τους αρχαϊκούς και κλασικούς χρόνους
Creators: name: Λατσίνογλου, Αθηνά Θεοδόσιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Λέσβος
Αρχαίες Λατρείες
Νησιωτικότητα
Lesbos
Ancient Cults
Insularity

description: Θέμα της παρούσας εργασίας αποτελεί η μελέτη των λατρειών της Λέσβου κατά τους αρχαϊκούς και κλασικούς χρόνους. Η έρευνα των λατρειών της Λέσβου κατέστη εφικτή χάρη στην ύπαρξη πηγών, δηλαδή τις φιλολογικές μαρτυρίες, τις επιγραφές, τα αρχιτεκτονικά κατάλοιπα, τα κινητά ευρήματα και τα νομίσματα. Μετά από μια περιγραφή της θέσης και της ιστορίας του νησιού, εξετάστηκαν οι λατρείες ανά πόλη, σύμφωνα με τη λεσβιακή πεντάπολη που υπήρχε κατά την αρχαϊκή και κλασική εποχή (Μυτιλήνη, Μήθυμνα, Ερεσός, Άντισσα, Πύρρα). Σε ξεχωριστά κεφάλαια ερευνήθηκε το Κοινό των Λεσβίων και οι λατρείες μη ταυτισμένων θέσεων. Οι λατρείες του νησιού μελετήθηκαν σε σχέση με τις λατρείες των μητροπόλεων, από τις οποίες προήλθαν οι Αιολείς άποικοι της Λέσβου. Οι μητροπόλεις αυτές βρίσκονται στη Θεσσαλία και Βοιωτία, ενώ ορισμένες φορές παρατηρείται εμφάνιση ανατολικών στοιχείων στη λατρεία ορισμένων θεοτήτων, όπως στην περίπτωση της Αρτέμιδας και της Κυβέλης.
description: The title of this thesis is “Cults in Lesbos during the Archaic and Classical times”. The research of the cults in Lesbos was possible due to the ancient sources, namely the literary testimonies, the inscriptions, the architectural remains, the mobile findings and the coins. After a description of the island’s location and history, each city’s cults were analyzed, according to the archaic and classical lesbian pentapolis (Mytilene, Mithymna, Eresos, Antissa, Pyrra). The Koinon of the Lesbians and the cults of unspecified locations were looked through on separate chapters. The island’s cults were examined in comparison to the metropolises’ cults, from which the Aeolian settlers of Lesbos originated. These metropolises are from Thessaly and Boeotia, while sometimes eastern elements appear in some deities’ cult, as in the case of Artemis and Cybele.
Probabilistic Scheduling of UFLS to Secure Credible Contingencies in Low Inertia Systems
Creators: name: O'Malley, Cormac
name: Badesa, Luis
name: Teng, Fei
name: Strbac, Goran
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The reduced inertia levels in low-carbon power grids necessitate explicit constraints to limit frequency's nadir and rate of change during scheduling. This can result in significant curtailment of renewable energy due to the minimum generation of thermal plants that are needed to provide frequency response (FR) and inertia. Additional consideration of fast FR, a dynamically reduced largest loss and under frequency load shedding (UFLS) allows frequency security to be achieved more cost effectively. This paper derives a novel nadir constraint from the swing equation that, for the first time, provides a framework for the optimal comparison of all these services. We demonstrate that this constraint can be accurately and conservatively approximated for moderate UFLS levels with a second order cone, resulting in highly tractable convex problems. Case studies performed on a Great Britain 2030 system demonstrate that UFLS as an option to contain single plant outages can reduce annual operational costs by up to £559m, 52% of frequency security costs. The sensitivity of this value to wind penetration, abundance of alternative frequency services, UFLS amount and cost is explored.
description: IEEE Transactions on Power Systems
Angular dependence of recoil proton polarization in high-energy γd \to p n
Creators: name: Jiang, X.
name: Arrington, J.
name: Benmokhtar, F.
name: Camsonne, A.
name: Chen, J. P.
name: Choi, S.
name: Chudakov, E.
name: Cusanno, F.
name: Deur, A.
name: Dutta, D.
name: Garibaldi, F.
name: Gaskell, D.
name: Gayou, O.
name: Gilman, R.
name: Glashauser, C.
name: Hamilton, D.
name: Hansen, O.
name: Higinbotham, D. W.
name: Holt, R. J.
name: de Jager, C. W.
name: Jones, M. K.
name: Kaufman, L. J.
name: Kinney, E. R.
name: Kramer, K.
name: Lagamba, L.
name: de Leo, R.
name: Lerose, J.
name: Lhuillier, D.
name: Lindgren, R.
name: Liyanage, N.
name: McCormick, K.
name: Meziani, Z. -E.
name: Michaels, R.
name: Moffit, B.
name: Monaghan, P.
name: Nanda, S.
name: Paschke, K. D.
name: Perdrisat, C. F.
name: Punjabi, V.
name: Qattan, I. A.
name: Ransome, R. D.
name: Reimer, P. E.
name: Reitz, B.
name: Saha, A.
name: Schulte, E. C.
name: Sheyor, R.
name: Slifer, K.
name: Solvignon, P.
name: Sulkosky, V.
name: Urciuoli, G. M.
name: Voutier, E.
name: Wang, K.
name: Wijesooriya, K.
name: Wojtsekhowski, B.
name: Zhu, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We measured the angular dependence of the three recoil proton polarization components in two-body photodisintegration of the deuteron at a photon energy of 2 GeV. These new data provide a benchmark for calculations based on quantum chromodynamics. Two of the five existing models have made predictions of polarization observables. Both explain the longitudinal polarization transfer satisfactorily.. Transverse polarizations are not well described, but suggest isovector dominance.
description: 5 pages, 1 figure, submitted to Physical Review Letters
Crossover between Ising and XY-like behavior in the off-equilibrium kinetics of the one-dimensional clock model
Creators: name: Andrenacci, Natascia
name: Corberi, Federico
name: Lippiello, Eugenio
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the phase-ordering kinetics following a quench to a final temperature $T_f$ of the one-dimensional p-state clock model. We show the existence of a critical value $p_c=4$, where the properties of the dynamics change. At $T_f=0$, for $p\le p_c$ the dynamics is analogous to that of the kinetic Ising model, characterized by Brownian motion and annihilation of interfaces. Dynamical scaling is obeyed with the same dynamical exponents and scaling functions of the Ising model. For $p>p_c$, instead, the dynamics is dominated by a texture mechanism analogous to the one-dimensional XY model, and dynamical scaling is violated. During the phase-ordering process at $T_f>0$, before equilibration occurs, a cross-over between an early XY-like regime and a late Ising-like dynamics is observed for $p>p_c$.
description: 14 pages, 13 figures
Elicitation of miscellaneous vocabulary
Creators: name: Parker, Verdena
name: Begay, Kayla
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio files VP-080812-05 and VP-080812-06: elicitation of miscellaneous vocabulary, including 'pie', types of hats, Sovereign's Day, and the internet. Kayla conducts part of the elicitation in Hupa.
by-nc-nd Καταδήλωση και Συμπαραδήλωση στην κινηματογραφική ταινία Πολίτης Καίην: Μια σημειωτική ανάλυση
Creators: name: Μωυσιάδου, Θεοδώρα Οδυσσέα
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Σημειωτική ανάλυση
Καταδήλωση και συμπαραδήλωση
Πολίτης Καίην
Semiotic Analysis
Denotation, Connotation
Citizen Kane

description: Η παρούσα εργασία επικεντρώνεται στη σημειωτική ανάλυση της κινηματογραφικής ταινίας Πολίτης Καίην με σκοπό την διερεύνηση του προφανούς και του βαθύτερου νοήματος. Κυρίως σχολιάζονται οι τρόποι με τους οποίους επιτυγχάνεται η συνέμφαση του νοήματος στην εικαστική σύνθεση των εικόνων, αλλά και σε άλλες πτυχές του κινηματογραφικού λόγου. Η έρευνα βασίστηκε στους θεωρητικούς εκπροσώπους της σημειωτικής όπως Saussure, Barthes αλλά και του Pierce. Η ανάγνωση των ταινιών από τον Monaco σε συνδυασμό με την εφαρμοσμένη αισθητική του Zettl, συνέβαλε στην έρευνα τόσο στο καταδηλωτικό όσο και στο συμπαραδηλωτικό επίπεδο ανάλυσης. Από το οπτικοακουστικό κείμενο επιλέχτηκαν συγκεκριμένες σκηνές και αναλύθηκαν μέσα από τους κινηματογραφικούς κώδικες που χρησιμοποιήθηκαν από τον πρωτοπόρο δημιουργό Orson Welles για να ερεθίσει την αντίληψη και την εμπειρία του θεατή μέσω καταδηλώσεων και συμπαραδηλώσεων της κινηματογραφικής γλώσσας. Ο θεατής μαζί με τον ερευνητή δημοσιογράφο συμμετέχει στο παιχνίδι της αναζήτησης για να λύσει το μυστήριο της λέξης-κλειδί ροδανθός. Αλλά ένα κομμάτι της ύπαρξης μας «αρκεί για να εξηγήσει τη ζωή ενός ανθρώπου», πόσο δε μάλλον να μας οδηγήσει στον εσωτερικό κόσμο της ψυχής;
description: The present dissertation focuses on a semiotic analysis of Orson Welles’ Citizen Kane with a view to explore both the apparent or obvious, as well as the deeper meaning of this film. In this attempt the aim is to explore the ways in which an additional meaning is achieved not only in image composition but in other aspects of film discourse. Research was based on the writings of well-known theorists of semiotics such as Ferdinand de Saussure, Roland Barthes and Charles Sanders Pierce, on the notes of James Monaco on Film Grammar, Syntax and Style in combination with the Contextual Aesthetics of Sight, Sound and Motion by Herbert Zettl, in order to arrive to a better understanding of how denotation and connotation works in film. Examining the particular film as a typical audiovisual text, a semiotic analysis was attempted on selected scenes in order to explore the cinematic codes of frame composition and mise-ene-scene, montage, camera placement and action, motion and sound, and particularly the distinct style of one of the pioneers and great innovators in film language, such as Orson Welles, in order to explore and determine denotation and connotation and how it affects the film viewer. Both the audience, as well as the investigator/reporter, take active part in the investigation of the meaning of the key-word Rosebud, around which the entire plot revolves, yet the ultimate meaning of the film, that is, whether a part of our existence “is enough to explain an entire human life, much more so to delve deeper into the human psyche,” remains questionable.
3He Spin-Dependent Cross Sections and Sum Rules
Creators: name: E94010 Collaboration
name: Slifer, K.
name: Amarian, M.
name: Auerbach, L.
name: Averett, T.
name: Berthot, J.
name: Bertin, P.
name: Bertozzi, B.
name: Black, T.
name: Brash, E.
name: Brown, D.
name: Burtin, E.
name: Calarco, J.
name: Cates, G.
name: Chai, Z.
name: Chen, J. -P.
name: Choi, Seonho
name: Chudakov, E.
name: Atti, C. Ciofi degli
name: Cisbani, E.
name: de Jager, C. W.
name: Deur, A.
name: DiSalvo, R.
name: Dieterich, S.
name: Djawotho, P.
name: Finn, M.
name: Fissum, K.
name: Fonvieille, H.
name: Frullani, S.
name: Gao, H.
name: Gao, J.
name: Garibaldi, F.
name: Gasparian, A.
name: Gilad, S.
name: Gilman, R.
name: Glamazdin, A.
name: Glashausser, C.
name: Glockle, W.
name: Golak, J.
name: Goldberg, E.
name: Gomez, J.
name: Gorbenko, V.
name: Hansen, J. -O.
name: Hersman, B.
name: Holmes, R.
name: Huber, G. M.
name: Hughes, E.
name: Humensky, B.
name: Incerti, S.
name: Iodice, M.
name: Jensen, S.
name: Jiang, X.
name: Jones, C.
name: Jones, G.
name: Jones, M.
name: Jutier, C.
name: Kamada, H.
name: Ketikyan, A.
name: Kominis, I.
name: Korsch, W.
name: Kramer, K.
name: Kumar, K.
name: Kumbartzki, G.
name: Kuss, M.
name: Lakuriqi, E.
name: Laveissiere, G.
name: Lerose, J. J.
name: Liang, M.
name: Liyanage, N.
name: Lolos, G.
name: Malov, S.
name: Marroncle, J.
name: McCormick, K.
name: McKeown, R. D.
name: Meziani, Z. -E.
name: Michaels, R.
name: Mitchell, J.
name: Nogga, A.
name: Pace, E.
name: Papandreou, Z.
name: Pavlin, T.
name: Petratos, G. G.
name: Pripstein, D.
name: Prout, D.
name: Ransome, R.
name: Roblin, Y.
name: Rowntree, D.
name: Rvachev, M.
name: Sabatie, F.
name: Saha, A.
name: Salme, G.
name: Scopetta, S.
name: Skibinski, R.
name: Souder, P.
name: Saito, T.
name: Strauch, S.
name: Suleiman, R.
name: Takahashi, K.
name: Teijiro, S.
name: Todor, L.
name: Tsubota, H.
name: Ueno, H.
name: Urciuoli, G.
name: Van der Meer, R.
name: Vernin, P.
name: Voskanian, H.
name: Witala, H.
name: Wojtsekhowski, B.
name: Xiong, F.
name: Xu, W.
name: Yang, J. -C.
name: Zhang, B.
name: Zolnierczuk, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present a measurement of the spin-dependent cross sections for the \vec{^3He}(\vec{e},e')X} reaction in the quasielastic and resonance regions at four-momentum transfer 0.1 < Q^2< 0.9 GeV^2. The spin-structure functions have been extracted and used to evaluate the nuclear Burkhardt--Cottingham and extended GDH sum rules for the first time. Impulse approximation and exact three-body Faddeev calculations are also compared to the data in the quasielastic region.
description: Final version
Hubble Space Telescope Measurements of Vacuum Ultraviolet Lines of Interstellar CH
Creators: name: Sheffer, Y.
name: Federman, S. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Three interstellar absorption lines near 1370 A seen toward zeta Oph have been assigned by Watson to Rydberg transitions in the G-X (or 3d-X) band of CH. Our survey of a dozen diffuse interstellar lines of sight shows that the three absorption lines are consistent with the known column densities of CH, by deriving the following oscillator strengths: f(1368.74) = 0.019 +/- 0.003, f(1369.13) = 0.030 +/- 0.005, and f(1370.87) = 0.009 +/- 0.001. We also determined intrinsic line widths that correspond to decay rates of (1.5 +/- 0.6) x 10^11 s^-1, (3.8 +/- 0.7) x 10^11 s^-1, and (1.1 +/- 0.6) x 10^10 s^-1 for lambdalambda 1368, 1369, and 1370, respectively. These rates are significantly higher than those associated with radiative decays, and thus are readily attributable to predissociation of the Rydberg state. A fourth interstellar line near 1271 A has been conjectured by Watson to be the strongest transition in the 4d-X Rydberg band of CH. We detected this line along four sight lines and our spectrum syntheses show that with f(1271.02) = 0.007 +/- 0.002, it is also consistent with the known column densities of CH. In addition, we conducted a search for the F-X band of CH near 1549 A, and successfully discovered two of its absorption features along four sight lines. The astronomical oscillator strengths derived for these features are f(1549.05) = 0.021 +/- 0.006 and f(1549.62) = 0.013 +/- 0.003. Finally, the X Per sight line provided us with an astronomical detection of another CH band, via two D-X features near 1694 A. Comparisons with results of available theoretical calculations for the four CH bands are presented.
description: 10 pages, emulateapj style
Notes on Certain Newton Gravity Mechanisms of Wave Function Localisation and Decoherence
Creators: name: Diósi, Lajos
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Both the additional non-linear term in the Schrödinger equation and the additional non-Hamiltonian term in the von Neumann equation, proposed to ensure localisation and decoherence of macro-objects, resp., contain the same Newtonian interaction potential formally. We discuss certain aspects that are common for both equations. In particular, we calculate the enhancement of the proposed localisation and/or decoherence effects, which would take place if one could lower the conventional length-cutoff and resolve the mass density on the interatomic scale.
description: 8pp LaTex, Submitted to J. Phys. A: Math-Gen, for the special issue ``The Quantum Universe'' in honor of G. C. Ghirardi
Nuclear Activity in Nearby Galaxies
Creators: name: Ho, Luis C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A significant fraction of nearby galaxies show evidence of weak nuclear activity unrelated to normal stellar processes. Recent high-resolution, multiwavelength observations indicate that the bulk of this activity derives from black hole accretion with a wide range of accretion rates. The low accretion rates that typify most low-luminosity active galactic nuclei induce significant modifications to their central engine. The broad-line region and obscuring torus disappear in some of the faintest sources, and the optically thick accretion disk transforms into a three-component structure consisting of an inner radiatively inefficient accretion flow, a truncated outer thin disk, and a jet or outflow. The local census of nuclear activity supports the notion that most, perhaps all, bulges host a central supermassive black hole, although the existence of active nuclei in at least some late-type galaxies suggests that a classical bulge is not a prerequisite to seed a nuclear black hole.
description: To appear in Annual Reviews of Astronomy and Astrophysics (2008). 76 pages
Feature Completion for Occluded Person Re-Identification
Creators: name: Hou, Ruibing
name: Ma, Bingpeng
name: Chang, Hong
name: Gu, Xinqian
name: Shan, Shiguang
name: Chen, Xilin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Person re-identification (reID) plays an important role in computer vision. However, existing methods suffer from performance degradation in occluded scenes. In this work, we propose an occlusion-robust block, Region Feature Completion (RFC), for occluded reID. Different from most previous works that discard the occluded regions, RFC block can recover the semantics of occluded regions in feature space. Firstly, a Spatial RFC (SRFC) module is developed. SRFC exploits the long-range spatial contexts from non-occluded regions to predict the features of occluded regions. The unit-wise prediction task leads to an encoder/decoder architecture, where the region-encoder models the correlation between non-occluded and occluded region, and the region-decoder utilizes the spatial correlation to recover occluded region features. Secondly, we introduce Temporal RFC (TRFC) module which captures the long-term temporal contexts to refine the prediction of SRFC. RFC block is lightweight, end-to-end trainable and can be easily plugged into existing CNNs to form RFCnet. Extensive experiments are conducted on occluded and commonly holistic reID benchmarks. Our method significantly outperforms existing methods on the occlusion datasets, while remains top even superior performance on holistic datasets. The source code is available at https://github.com/blue-blue272/OccludedReID-RFCnet.
description: 18 pages, 17 figures. The paper is accepted by TPAMI, and the code is available at https://github.com/blue-blue272/OccludedReID-RFCnet
Zoology of Graviton non-Gaussianities
Creators: name: Cabass, Giovanni
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We characterize graviton non-Gaussianities in models of inflation where de Sitter boosts are spontaneously broken. We discuss which of the symmetry breaking patterns studied in Nicolis et al., 2015 can sustain a period of quasi de Sitter expansion, and show that the symmetry breaking pattern of Solid Inflation allows the most freedom for graviton interactions. We comment on the phenomenological consequences of some of these interactions. As a byproduct of this analysis we construct the "EFT of Solid Inflation", which has all the useful features of the EFT of Inflation but for the case of broken spatial diffeomorphisms.
description: 14 pages, 1 table, matches JCAP version
Combining Astrometry and Elemental Abundances: The Case of the Candidate Pre-Gaia Halo Moving Groups G03-37, G18-39, and G21-22
Creators: name: Schuler, S. C.
name: Andrews, J. J.
name: Clanzy, V. R.
name: Mourabit, M.
name: Chanamé, J.
name: Agüeros, M. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: While most moving groups are young and nearby, a small number have been identified in the Galactic halo. Understanding the origin and evolution of these groups is an important piece of reconstructing the formation history of the halo. Here we report on our analysis of three putative halo moving groups: G03-37, G18-39, and G21-22. Based on Gaia EDR3 data, the stars associated with each group show some scatter in velocity (e.g., Toomre diagram) and integrals of motion (energy, angular momentum) spaces, counter to expectations of moving-group stars. We choose the best candidate of the three groups, G21-22, for follow-up chemical analysis based on high-resolution spectroscopy of six presumptive members. Using a new Python code that uses a Bayesian method to self-consistently propagate uncertainties from stellar atmosphere solutions in calculating individual abundances and spectral synthesis, we derive the abundances of $α$- (Mg, Si, Ca, Ti), Fe-peak (Cr, Sc, Mn, Fe, Ni), odd-$Z$ (Na, Al, V), and neutron-capture (Ba, Eu) elements for each star. We find that the G21-22 stars are not chemically homogeneous. Based on the kinematic analysis for all three groups and the chemical analysis for G21-22, we conclude the three are not genuine moving groups. The case for G21-22 demonstrates the benefit of combining kinematic and chemical information in identifying conatal populations when either alone may be insufficient. Comparing the integrals of motion and velocities of the six G21-22 stars with those of known structures in the halo, we tentatively associate them with the Gaia-Enceladus accretion event.
description: 21 pages, 12 figures, seven tables; accepted to AJ
The Impact of Stochastic Attenuation on Photometric Redshift Estimates
Creators: name: García, Thorsten Tepper
name: Alvensleben, Uta Fritze-von
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We model the attenuation due to HI along a random line of sight (LOS) using differential distribution functions constrained from observations (Kim et al. 97) in a Monte Carlo fashion (Bershady et al. 99) as described in Tepper Garcia & Fritze-v.A. (in prep.). We generate an ensemble of thousands of lines of sight out to a given redshift z, each of them containing a random absorber population. For each LOS we calculate an absorption mask, i.e. we compute the photoelectric and Lyman-Series line absorption (as yet just for the first five Lyman transitions) caused by each absorber for a flat input spectrum, modeling line profiles as in Tepper Garcia 2006. We compute model galaxy spectra corresponding to a CSFR for redshifts in the range 0.0 < z < 4.5 using the Evolutionary Synthesis code GALEV (Bicker et al. 2004). For a given redshift, we multiply each of the masks with our input spectrum and thus obtain an ensemble of an equal number of attenuated spectra. For each of these we compute a SED in the Johnson system. Using AnalySED (Anders et al. 2006) and a set of template SEDs that include only the mean attenuation (Madau 95) for every redshift, we determine to which extent the redshifts of our simulated spectral energy distributions are recovered.
description: To appear in the Proceedings of the IAU Symposium 235 "Galaxy Evolution across the Hubble Time". Uses iaus.cls
Observable gravitational waves from tidal disruption events and their electromagnetic counterpart
Creators: name: Pfister, Hugo
name: Toscani, Martina
name: Wong, Thomas Hong Tsun
name: Dai, Jane Lixin
name: Lodato, Giuseppe
name: Rossi, Elena M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We estimate the rate of tidal disruption events (TDEs) that will be detectable with future gravitational wave detectors as well as the most probable properties of these events and their possible electromagnetic counterpart. To this purpose we combine standard gravitational waves and electromagnetic results with detailed rates estimates. We find that the \emph{Laser Interferometer Space Antenna} (LISA) should not detect any TDEs, unless black holes (BHs) are typically embedded by a young stellar population which, in this situation, could lead up to few 10 events during the duration of the mission. If there are gravitational wave observations, these events should also be observable in the X-ray or the optical/UV part of the electromagnetic spectrum, which may open up the multi-messenger era for TDEs. The generation of detectors following LISA will at least yearly observe $10^4$ TDEs at cosmological distances, allowing to do population studies and constrain the black hole mass function. In all cases, most probable events should be around black holes with a mass such that the Keplerian frequency at the Schwarzschild radius is similar to the optimal frequency of the detector and with a large penetration factor.
description: accepted to MNRAS
Wind induced entrainment in the Strait of Georgia and the possible consequences for fish survival
Creators: name: Blackett, Andrew W.
Publisher: name: University of British Columbia
Year: 2008

description: A numerical model of the Strait of Georgia, British Columbia was used to investigate the possibility that wind induced entrainment enhances the survival of fish which spend their early lives in the area, by supplying nitrate rich deep water to the photic zone and increasing primary productivity. Historical records of winds and Fraser River discharge were used to drive the combined GF4/MULES physical/biological model, to simulate entrainment and nitrate concentration in the upper layer of the Strait of Georgia during the months April to July, from 1970 to 1988. Using linear correlation coefficients and considering various functions of the wind speed, it was found that the square of the wind speed was correlated with both entrainment and nitrate concentration. Both correlations were found to be statistically significant at the 1% level at most of the locations and times studied. Correlations were particularly strong during times that young salmon usually enter the Strait on their migration to the ocean, resulting in the conclusion that the square of the wind speed could be used as an indicator of potential food supply to the fish. Historical wind speed records were then compared with survival data for salmon and herring in the Strait. Little correlation was found between survival rates of different species, or between wind speed and survival of any species, suggesting that there are too many other factors to allow prediction of marine survival from nitrate enhancement alone.
Contextual logic for quantum systems
Creators: name: Domenech, Graciela
name: Freytes, Hector
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we build a quantum logic that allows us to refer to physical magnitudes pertaining to different contexts from a fixed one without the contradictions with quantum mechanics expressed in no-go theorems. This logic arises from considering a sheaf over a topological space associated to the Boolean sublattices of the ortholattice of closed subspaces of the Hilbert space of the physical system. Differently to standard quantum logics, the contextual logic maintains a distributive lattice structure and a good definition of implication as a residue of the conjunction.
description: 16 pages, no figures
Nonintrusive Uncertainty Quantification for automotive crash problems with VPS/Pamcrash
Creators: name: Rocas, Marc
name: García-González, Alberto
name: Zlotnik, Sergio
name: Larráyoz, Xabier
name: Díez, Pedro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Uncertainty Quantification (UQ) is a key discipline for computational modeling of complex systems, enhancing reliability of engineering simulations. In crashworthiness, having an accurate assessment of the behavior of the model uncertainty allows reducing the number of prototypes and associated costs. Carrying out UQ in this framework is especially challenging because it requires highly expensive simulations. In this context, surrogate models (metamodels) allow drastically reducing the computational cost of Monte Carlo process. Different techniques to describe the metamodel are considered, Ordinary Kriging, Polynomial Response Surfaces and a novel strategy (based on Proper Generalized Decomposition) denoted by Separated Response Surface (SRS). A large number of uncertain input parameters may jeopardize the efficiency of the metamodels. Thus, previous to define a metamodel, kernel Principal Component Analysis (kPCA) is found to be effective to simplify the model outcome description. A benchmark crash test is used to show the efficiency of combining metamodels with kPCA.
One-Loop Corrections to the S and T Parameters in a Three Site Higgsless Model
Creators: name: Matsuzaki, Shinya
name: Chivukula, R. Sekhar
name: Simmons, Elizabeth H.
name: Tanabashi, Masaharu
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we compute the the one-loop chiral logarithmic corrections to the S and T parameters in a highly deconstructed Higgsless model with only three sites. In addition to the electroweak gauge bosons, this model contains a single extra triplet of vector states (which we denote ρ^{\pm} and ρ^0), rather than an infinite tower of "KK" modes. We compute the corrections to S and T in 'tHooft-Feynman gauge, including the ghost, unphysical Goldstone-boson, and appropriate "pinch" contributions required to obtain gauge-invariant results for the one-loop self-energy functions. We demonstrate that the chiral-logarithmic corrections naturally separate into two parts, a model-independent part arising from scaling below the ρmass, which has the same form as the large Higgs-mass dependence of the S or T parameter in the standard model, and a second model-dependent contribution arising from scaling between the ρmass and the cutoff of the model. The form of the universal part of the one-loop result allows us to correctly interpret the phenomenologically derived limits on the S and T parameters (which depend on a "reference" Higgs-boson mass) in this three-site Higgsless model. Higgsless models may be viewed as dual to models of dynamical symmetry breaking akin to "walking technicolor", and in these terms our calculation is the first to compute the subleading 1/N corrections to the S and T parameters. We also discuss the reduction of the model to the ``two-site'' model, which is the usual electroweak chiral lagrangian, noting the ``non-decoupling'' contributions present in the limit as M_ρgoes to infinity.
description: 58 pages; uses JHEP and axodraw. Extensively corrected to incorporate consistent perturbative expansion, additional pinch contributions, and running of delocalization parameter. Footnotes added
Revisiting the role of CP-conserving processes in cosmological particle-antiparticle asymmetries
Creators: name: Ghosh, Avirup
name: Ghosh, Deep
name: Mukhopadhyay, Satyanarayan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We point out qualitatively different possibilities on the role of CP-conserving processes in generating cosmological particle-antiparticle asymmetries, with illustrative examples from models in leptogenesis and asymmetric dark matter production. In particular, we consider scenarios in which the CP-violating and CP-conserving processes are either both decays or both scatterings, thereby being naturally of comparable rates. This is in contrast to the previously considered CP-conserving processes in models of leptogenesis in different see-saw mechanisms, in which the CP-conserving scatterings typically have lower rates compared to the CP-violating decays, due to a Boltzmann suppression. We further point out that the CP-conserving processes can play a dual role if the asymmetry is generated in the mother sector itself, in contrast to the conventional scenarios in which it is generated in the daughter sector. This is because, the CP-conserving processes initially suppress the asymmetry generation by controlling the out-of-equilibrium number densities of the bath particles, but subsequently modify the ratio of particle anti-particle yields at the present epoch by eliminating the symmetric component of the bath particles through pair-annihilations, leading to a competing effect stemming from the same process at different epochs. We find that the asymmetric yields for relevant particle-antiparticle systems can vary by orders of magnitude depending upon the relative size of the CP-conserving and violating reaction rates.
description: 12 pages, 6 figures; v2: 15 pages, substantially rewritten text, new figures, version to appear in European Physical Journal C
Transcription of file 028_A (collection LA 256)
Creators: name: Parker, Verdena
name: Begay, Kayla
name: Newbold, Lindsey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio files VP-080812-02, VP-080812-03a, and VP-080812-04: Transcription of file 028_A (referred to here as 029_A) from LA 256 (a collection of recordings given to the Berkeley Language Center by Verdena), from 11:00 to 11:15 (VP-080812-02), from 11:15 to 13:36 (VP-080812-03a), and from 13:36 to 14:14 (VP-080812-04). The file was assigned a provisional identifier 029_A that was changed to 028_A in the final cataloging for the collection; file 028_A was subsequently assigned the identifier LA256.028A and associated with the bundle LA256.028 in the California Language Archive.
Relations Between Coefficients of Fractional Parentage
Creators: name: Zamick, Larry
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: For each of the (9/2), (11/2) and (13/2) single j shells we have only one state with J=j V=3 for a five particle system. For four identical particles there can be more than one state of seniority four. We note some ``ratio'' relations for the coefficients of fractional parentage for the four and five identical particle systems.
Microphone check
Creators: name: Parker, Verdena
name: Begay, Kayla
name: Newbold, Lindsey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-080812-01: Microphone check (the date and current weather given in Hupa). There is no sound for the first 47 seconds of the recording.
A backward-spinning star with two coplanar planets
Creators: name: Hjorth, Maria
name: Albrecht, Simon
name: Hirano, Teruyuki
name: Winn, Joshua N.
name: Dawson, Rebekah I.
name: Zanazzi, J. J.
name: Knudstrup, Emil
name: Sato, Bun'ei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: It is widely assumed that a star and its protoplanetary disk are initially aligned, with the stellar equator parallel to the disk plane. When observations reveal a misalignment between stellar rotation and the orbital motion of a planet, the usual interpretation is that the initial alignment was upset by gravitational perturbations that took place after planet formation. Most of the previously known misalignments involve isolated hot Jupiters, for which planet-planet scattering or secular effects from a wider-orbiting planet are the leading explanations. In theory, star/disk misalignments can result from turbulence during star formation or the gravitational torque of a wide-orbiting companion star, but no definite examples of this scenario are known. An ideal example would combine a coplanar system of multiple planets -- ruling out planet-planet scattering or other disruptive post-formation events -- with a backward-rotating star, a condition that is easier to obtain from a primordial misalignment than from post-formation perturbations. There are two previously known examples of a misaligned star in a coplanar multi-planet system, but in neither case has a suitable companion star been identified, nor is the stellar rotation known to be retrograde. Here, we show that the star K2-290 A is tilted by $124\pm 6$ degrees compared to the orbits of both of its known planets, and has a wide-orbiting stellar companion that is capable of having tilted the protoplanetary disk. The system provides the clearest demonstration that stars and protoplanetary disks can become grossly misaligned due to the gravitational torque from a neighbouring star.
description: Published in PNAS, Februay 2021. The pdf file contains the main article (7 pages, 5 figures, 1 table), as well as the Supplementary Information (16 pages, 7 figures, 4 tables)
Coherent States and Bayesian Duality
Creators: name: Ali, S. Twareque
name: Gazeau, J. -P.
name: Heller, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 62A01,81Q99,

description: We demonstrate how large classes of discrete and continuous statistical distributions can be incorporated into coherent states, using the concept of a reproducing kernel Hilbert space. Each family of coherent states is shown to contain, in a sort of duality, which resembles an analogous duality in Bayesian statistics, a discrete probability distribution and a discretely parametrized family of continuous distributions. It turns out that nonlinear coherent states, of the type widely studied in quantum optics, are a particularly useful class of coherent states from this point of view, in that they contain many of the standard statistical distributions. We also look at vector coherent states and multidimensional coherent states as carriers of mixtures of probability distributions and joint probability distributions.