cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Convergence result and blow-up examples for the Guan--Li mean curvature flow on warped product spaces
Creators: name: Vétois, Jérôme
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We examine the question of convergence of solutions to a geometric flow which was introduced by Guan and Li for starshaped hypersurfaces in space forms and generalized by Guan, Li, and Wang to the case of warped product spaces. We obtain a convergence result under a condition on the optimal modulus of continuity of the initial data. Moreover we show by examples that this condition is optimal at least in the one-dimensional case.
description: Final version to appear in Communications in Analysis and Geometry
The canonical wall structure and intrinsic mirror symmetry
Creators: name: Gross, Mark
name: Siebert, Bernd
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 14J33

description: As announced "Intrinsic mirror symmetry and punctured invariants" in 2016, we construct and prove consistency of the canonical wall structure. This construction starts with a log Calabi-Yau pair (X,D) and produces a wall structure, as defined by Gross-Hacking-Siebert. Roughly put, the canonical wall structure is a data structure which encodes an algebro-geometric analogue of counts of Maslov index zero disks. These enumerative invariants are defined in terms of the punctured invariants of Abramovich-Chen-Gross-Siebert. There are then two main theorems of the paper. First, we prove consistency of the canonical wall structure, so that the canonical wall structure gives rise to a mirror family. Second, we prove that this mirror family coincides with the intrinsic mirror constructed in our paper "Intrinsic mirror symmetry". While the setup of this paper is narrower than that of the latter paper, it gives a more detailed description of the mirror.
description: 77 pages, 3 figures, accepted version, to appear in Inventiones
Loop-Induced Stochastic Bias at Small Wavevectors
Creators: name: McAneny, Michael
name: Ridgway, Alexander K.
name: Solon, Mikhail P.
name: Wise, Mark B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Primordial non-Gaussianities enhanced at small wavevectors can induce a power spectrum of the galaxy overdensity that differs greatly from that of the matter overdensity at large length scales. In previous work, it was shown that "squeezed" three-point and "collapsed" four-point functions of the curvature perturbation $ζ$ can generate these non-Gaussianities and give rise to so-called scale-dependent and stochastic bias in the galaxy overdensity power spectrum. We explore a third way to generate non-Gaussianities enhanced at small wavevectors: the infrared behavior of quantum loop contributions to the four-point correlations of $ζ$. We show that these loop effects lead to stochastic bias, which can be observable in the context of quasi-single field inflation.
description: 10 pages, 4 figures
Afrophila Galil, 2009, n. gen.
Creators: name: Galil, Bella S.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Leucosiidae
Afrophila

description: Genus Afrophila n. gen.
TYPE SPECIES. — Philyra punctata Bell, 1855.
ETYMOLOGY. — Afrophila refers to the distribution of the type species, Afrophila punctata (Bell, 1855) n. comb., along the southern coast of Africa. Gender feminine.
DIAGNOSIS. — Carapace subovate, globose; regions of carapace nearly indistinct. Dorsal surface of carapace punctate, minutely granulate. Frontal region slightly produced, medially indented; frontal margin medially denticulate. Antennular fossa not quite sealed by basal antennular segment. Antennae short, inserted between antennular fossa and orbit. Orbits small, rounded, upper orbital margin unisutured. Eyes retractable. Epistome bilobate. Anterior margin of efferent branchial channel forms part of lower orbital margin, continuous with crenulate subhepatic margin, projecting beyond frontal margin. External maxilliped exopod reniform, not quite reaching anterior margin; endopods ogive, bearing in female setose fringe lengthwise; endopodal ischium longer than subtriangular merus. Lateral and posterior margins of carapace closely beaded; Hepatic facet distinct, lower margin angulate. Epimeral margin meeting lateral margin at posterior margin, minutely beaded. Chelipeds subequal; longer, stockier in adult male than in female specimens. Cheliped merus subcylindrical, slightly swollen proximally on anterior margin, surface minutely granulate, granulate. Fingers as long as propodus. Pereiopods slender, short. Pereiopodal meri longer than carpi and propodi; dactyli longer than propodi, lanceolate, terminating in cornute tips. Male abdominal sulcus deep, nearly reaching buccal cavity. First abdominal segment of male anvil-shaped; second segment transversely narrow, thickened laterally. Third to fifth abdominal segments fused. Proximal margin of sixth segment sinuous, lateral margin bearing distinct ridge proximally fitting into suture between sternal segments, lacking subterminal denticle, telson laciniate. Female abdomen with first two segments transversely narrow, yoke-shaped, segments three to six fused, greatly enlarged, shield-like. First male pleopod elongate, slender, sinuous, distally crook-shaped. Second male pleopod short, curved, apex scoop-like, acuminate.
REMARKS
Though superficially resembling Philyra s.s., Afrophila n. gen. is distinguished by the distally crook-shaped male first pleopod that lacks the subterminal alate process of former genus, and the form of the male abdomen, with its trapezoid first segment and jointed sixth segment as opposed to the transversely narrow first segment and fused sixth segment in Philyra s.s.
description: Published as part of Galil, Bella S., 2009, An examination of the genus Philyra Leach, 1817 (Crustacea, Decapoda, Leucosiidae) with descriptions of seven new genera and six new species, pp. 279-320 in Zoosystema 31 (2) on page 286, DOI: 10.5252/z2009n2a4, http://zenodo.org/record/5399261
On the dyon partition function in N=2 theories
Creators: name: David, Justin R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the entropy function of two N =2 string compactifications obtained as freely acting orbifolds of N=4 theories : the STU model and the FHSV model. The Gauss-Bonnet term for these compactifications is known precisely. We apply the entropy function formalism including the contribution of this four derivative term and evaluate the entropy of dyons to the first subleading order in charges for these models. We then propose a partition function involving the product of three Siegel modular forms of weight zero which reproduces the degeneracy of dyonic black holes in the STU model to the first subleading order in charges. The proposal is invariant under all the duality symmetries of the STU model. For the FHSV model we write down an approximate partition function involving a Siegel modular form of weight four which captures the entropy of dyons in the FHSV model in the limit when electric charges are much larger than magnetic charges.
description: 48 pages
Hong-Ou-Mandel interference of polarization qubits stored in independent room-temperature quantum memories
Creators: name: Gera, Sonali
name: Wallace, Chase
name: Flament, Mael
name: Scriminich, Alessia
name: Namazi, Mehdi
name: Kim, Youngshin
name: Sagona-Stophel, Steven
name: Vallone, Giuseppe
name: Villoresi, Paolo
name: Figueroa, Eden
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum repeater networks require independent quantum memories capable of storing and retrieving indistinguishable photons to perform high-repetition entanglement swapping operations. The ability to perform these coherent operations at room temperature is of prime importance to the realization of scalable quantum networks. We perform Hong-Ou-Mandel (HOM) interference between photonic polarization qubits stored and retrieved from two sets of independent room-temperature quantum memories. We show a steady improvement in memory parameters and visibilities, culminating in a high quantum memory HOM visibility of 43%, compared to the 48% no-memory limit of our set-up. These results lay the groundwork for future applications using large-scale memory-assisted quantum networks.
description: 15 pages, 8 figures, 4 tables
Imaging the Molecular Outflows of the Prototypical ULIRG NGC 6240 with ALMA
Creators: name: Saito, T.
name: Iono, D.
name: Ueda, J.
name: Espada, D.
name: Sliwa, K.
name: Nakanishi, K.
name: Lu, N.
name: Xu, C. K.
name: Michiyama, T.
name: Kaneko, H.
name: Yamashita, T.
name: Ando, M.
name: Yun, M. S.
name: Motohara, K.
name: Kawabe, R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present 0".97 $\times$ 0".53 (470 pc $\times$ 250 pc) resolution CO ($J$ = 2-1) observations toward the nearby luminous merging galaxy NGC 6240 with the Atacama Large Millimeter/submillimeter Array. We confirmed a strong CO concentration within the central 700 pc, which peaks between the double nuclei, surrounded by extended CO features along the optical dust lanes ($\sim$11 kpc). We found that the CO emission around the central a few kpc has extremely broad velocity wings with full width at zero intensity $\sim$ 2000 km s$^{-1}$, suggesting a possible signature of molecular outflow(s). In order to extract and visualize the high-velocity components in NGC 6240, we performed a multiple Gaussian fit to the CO datacube. The distribution of the broad CO components show four extremely large linewidth regions ($\sim$1000 km s$^{-1}$) located 1-2 kpc away from both nuclei. Spatial coincidence of the large linewidth regions with H$α$, near-IR H$_2$, and X-ray suggests that the broad CO (2-1) components are associated with nuclear outflows launched from the double nuclei.
description: 5 pages, 4 figures, 1 table, Accepted for publication in Monthly Notices of the Royal Astronomical Society Letter
Relating State-Based and Process-Based Concurrency through Linear Logic
Creators: name: Iliano Cervesato
name: Scedrov, Andre
Publisher: name: Carnegie Mellon University
Year: 1984
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: This paper has the purpose of reviewing some of the established relationships between logic and concurrency, and of exploring new ones. Concurrent and distributed systems are notoriously hard to get right. Therefore, following an approach that has proved highly beneficial for sequential programs, much effort has been invested in tracing the foundations of concurrency in logic. The starting points of such investigations have been various idealized languages of concurrent and distributed programming, in particular the well-established state-transformation model inspired by Petri nets and multiset rewriting, and the prolific process-based models such as the π-calculus and other process algebras. In nearly all cases, the target of these investigations has been linear logic, a formal language that supports a view of formulas as consumable resources. In the first part of this paper, we review some of these interpretations of concurrent languages into linear logic and observe that, possibly modulo duality, they invariably target a small semantic fragment of linear logic that we call LVobs. In the second part of the paper, we propose a new approach to understanding concurrent and distributed programming as a manifestation of logic, which yields a language that merges those two main paradigms of concurrency. Specifically, we present a new semantics for multiset rewriting founded on an alternative view of linear logic and specifically LVobs. The resulting interpretation is extended with a majority of linear connectives into the language of ω-multisets. This interpretation drops the distinction between multiset elements and rewrite rules, and considerably enriches the expressive power of standard multiset rewriting with embedded rules, choice, replication, and more. Derivations are now primarily viewed as open objects, and are closed only to examine intermediate rewriting states. The resulting language can also be interpreted as a process algebra. For example, a simple translation maps process constructors of the asynchronous π-calculus to rewrite operators. The language of ω multisets forms the basis for the security protocol specification language MSR 3. With relations to both multiset rewriting and process algebra, it supports specifications that are process-based, state-based, or of a mixed nature, with the potential of combining verification techniques from both worlds. Additionally, its logical underpinning makes it an ideal common ground for systematically comparing protocol specification languages
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome V, Cart. 189 (11 H 74), 316 folios, f. 0115v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: cartulaire
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome V, Archives départementales de la Côte-d'Or, Cart. 189 (11 H 74), 316 folios, f. 0115v, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome V, Archives départementales de la Côte-d'Or, Cart. 189 (11 H 74), 316 folios, f. 0115v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
The Commutativity of Integrals of Motion for Quantum Spin Chains and Elliptic Functions Identities
Creators: name: Dittrich, J.
name: Inozemtsev, V. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We prove the commutativity of the first two nontrivial integrals of motion for quantum spin chains with elliptic form of the exchange interaction. We also show thair linear independence for the numbers of spins larger than 4. As a byproduct, we obtained several identities between elliptic Weierstrass functions of three and four arguments.
description: 13 pages
Atom interferometry with quantized light pulses
Creators: name: Soukup, Katharina
name: Di Pumpo, Fabio
name: Asano, Tobias
name: Schleich, Wolfgang P.
name: Giese, Enno
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The far-field patterns of atoms diffracted from a classical light field, or from a quantum one in a photon-number state are identical. On the other hand, diffraction from a field in a coherent state, which shares many properties with classical light, displays a completely different behavior. We show that in contrast to the diffraction patterns, the interference signal of an atom interferometer with light-pulse beam splitters and mirrors in intense coherent states does approach the limit of classical fields. However, low photon numbers reveal the granular structure of light, leading to a reduced visibility since Welcher-Weg (which-way) information is encoded into the field. We discuss this effect for a single photon-number state as well as a superposition of two such states.
description: 9 pages, 3 figures
How to distinguish between interacting and noninteracting molecules in tunnel junctions
Creators: name: Sierra, Miguel A.
name: Sánchez, David
name: Garrigues, Alvar R.
name: del Barco, Enrique
name: Wang, Lejia
name: Nijhuis, Christian A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent experiments demonstrate a temperature control of the electric conduction through a ferrocene-based molecular junction. Here we examine the results in view of determining means to distinguish between transport through single-particle molecular levels or via transport channels split by Coulomb repulsion. Both transport mechanisms are similar in molecular junctions given the similarities between molecular intralevel energies and the charging energy. We propose an experimentally testable way to identify the main transport process. By applying a magnetic field to the molecule, we observe that an interacting theory predicts a shift of the conductance resonances of the molecule whereas in the noninteracting case each resonance is split into two peaks. The interaction model works well in explaining our experimental results obtained in a ferrocene-based single-molecule junction, where the charge degeneracy peaks shift (but do not split) under the action of an applied 7-Tesla magnetic field. This method is useful for a proper characterization of the transport properties of molecular tunnel junctions.
description: Main text: 7 pages, 5 figures; SI: 2 pages, 2 figures. Accepted to RSC Nanoscale
Lattice Black Branes: Sphere Packing in General Relativity
Creators: name: Dias, Oscar J. C.
name: Santos, Jorge E.
name: Way, Benson
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We perturbatively construct asymptotically $\mathbb{R}^{1,3}\times\mathbb{T}^2$ black branes with multiple inhomogeneous directions and show that some of them are thermodynamically preferred over uniform branes in both the microcanonical and canonical ensembles. This demonstrates that, unlike five-dimensional black strings, the instability of some unstable black branes has a plausible endpoint that does not require a violation of cosmic censorship.
Density and $T_1$ of surface and bulk spins in diamond in high magnetic field gradients
Creators: name: de Wit, Martin
name: Welker, Gesa
name: de Voogd, Marc
name: Oosterkamp, Tjerk
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on surface and bulk spin density measurements of diamond, using ultra-sensitive magnetic force microscopy with magnetic field gradients up to 0.5 T/$μ$m. At temperatures between 25 and 800 mK, we measure the shifts in the resonance frequency and quality factor of a cantilever with a micromagnet attached to it. A recently developed theoretical analysis allows us to extract a surface spin density of 0.072 spins/nm$^2$ and a bulk spin density of 0.4 ppm from this data. In addition, we find an increase of the $T_1$ time of the surface spins in high magnetic field gradients due to the suppression of spin diffusion. Our technique is applicable to a variety of samples other than diamond, and could be of interest for several research fields where surface, interface or impurity bulk spin densities are an important factor.
description: 7 pages, 6 figures
[Hermanón: Me entregaron tu nota, me alegro, ya hayas podido comunicarte]
Creators: name: Agustín, Cervantes García
name: Cervantes García, Agustín
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2023
Subjects: Prison de Aguadores
Conditions de détention
Lutte politique

description: Destinataire : Vázquez Portal, Manuel
description: Description : L'auteur de la lettre l'informe qu'il a bien reçu sa note, et que des codétenus ont été emmenés, dont un certain Udio, à Guantanamo. Certaines démarches auraient été entreprises à son encontre pour l'envoyer à Camagüey sous régime spécial. Il lui enverra bientôt une liste des partisans du jeûne. Des prisonniers sont constamment transférés. Il lui demande de passer le bonjour à Abelito et fait allusion au procès de Braily (Abelito).
description: Notes : Lettre envoyée depuis la Prison de Aguadores.
description: Source: Cote : MVP-B-2003-11-24
description: Source: Localisation du document : États-Unis, Miami (Floride)
Non-synchronized solutions to nonlinear elliptic Schrödinger systems on a closed Riemannian manifold
Creators: name: Mazumdar, Saikat
name: Vétois, Jérôme
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: On a smooth, closed Riemannian manifold, we study the question of proportionality of components, also called synchronization, of vector-valued solutions to nonlinear elliptic Schrödinger systems with constant coefficients. In particular, we obtain bifurcation results showing the existence of branches of non-synchronized solutions emanating from the constant solutions.
Relating Reasoning Methodologies in Linear Logic and Process Algebra (CMU-CS-11-145, CMU-CS-QTR-111)
Creators: name: Yuxin  Deng
name: Simmons, Robert J.
name: Iliano Cervesato
Publisher: name: Carnegie Mellon University
Year: 1978
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: We show that the proof-theoretic notion of logical preorder coincides with the process-theoretic notion of contextual preorder for a CCS-like process calculus obtained from the formula-as-process interpretation of a fragment of linear logic. The argument makes use of other standard notions in process algebra, namely simulation and labeled transition systems. This result establishes a connection between an approach to reason about process specifications, the contextual preorder, and a method to reason about logic specifications, the logical preorder.
VVV Survey Microlensing Events in the Galactic Center Region
Creators: name: Navarro, María Gabriela
name: Minniti, Dante
name: Ramos, Rodrigo Contreras
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We search for microlensing events in the highly reddened areas surrounding the Galactic center using the near-IR observations with the VISTA Variables in the Vía Láctea Survey (VVV). We report the discovery of 182 new microlensing events, based on observations acquired between 2010 and 2015. We present the color-magnitude diagrams of the microlensing sources for the VVV tiles b332, b333, and b334, which were independently analyzed, and show good qualitative agreement among themselves. We detect an excess of microlensing events in the central tile b333 in comparison with the other two tiles, suggesting that the microlensing optical depth keeps rising all the way to the Galactic center. We derive the Einstein radius crossing time for all of the observed events. The observed event timescales range from $t_E = 5$ to $200$ days. The resulting timescale distribution shows a mean timescale of $=30.91$ days for the complete sample ($N = 182$ events), and $=29.93$ days if restricted only for the red clump (RC) giant sources ($N = 96$ RC events). There are 20 long timescale events ($t_E \geq 100$ days) that suggest the presence of massive lenses (black holes) or disk-disk event. This work demonstrates that the VVV Survey is a powerful tool to detect intermediate/long timescale microlensing events in highly reddened areas, and it enables a number of future applications, from analyzing individual events to computing the statistics for the inner Galactic mass and kinematic distributions, in aid of future ground- and space-based experiments.
description: 8 pages, 4 figures, published on The Astrophysical Journal Letters
Relating Process Algebras and Multiset Rewriting for Security Protocol Analysis
Creators: name: Bistarelli, Stefano
name: Iliano  Cervesato
name: Lenzini, Gabriele
name: Martinelli, Fabio
Publisher: name: Carnegie Mellon University
Year: 2000
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: When formalizing security protocols, different specification languages support very different reasoning methodologies, whose results are not directly or easily comparable. Therefore, establishing clear relationships among different frameworks is highly desirable, as it permits various methodologies to cooperate by interpreting theoretical and practical results of one system in another. In this paper, we examine the non-trivial relationship between two general verification frameworks: multiset rewriting (MSR) and a process algebra (PA) inspired to the CCS and the pi-calculus. We present two separate mappings, one from MSR to PA and the other from PA to MSR. Although defining a simple and general bijection between MSR and PA appears difficult, we show that in the specific context of cryptographic protocols they do admit effective translations that preserve traces.
Automatic Detection and Positioning of Ground Control Points Using TerraSAR-X Multi-Aspect Acquisitions
Creators: name: Montazeri, Sina
name: Gisinger, Christoph
name: Eineder, Michael
name: Zhu, Xiao Xiang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Geodetic stereo Synthetic Aperture Radar (SAR) is capable of absolute three-dimensional localization of natural Persistent Scatterer (PS)s which allows for Ground Control Point (GCP) generation using only SAR data. The prerequisite for the method to achieve high precision results is the correct detection of common scatterers in SAR images acquired from different viewing geometries. In this contribution, we describe three strategies for automatic detection of identical targets in SAR images of urban areas taken from different orbit tracks. Moreover, a complete work-flow for automatic generation of large number of GCPs using SAR data is presented and its applicability is shown by exploiting TerraSAR-X (TS-X) high resolution spotlight images over the city of Oulu, Finland and a test site in Berlin, Germany.
Quantitative OCT reconstructions for dispersive media
Creators: name: Elbau, Peter
name: Mindrinos, Leonidas
name: Veselka, Leopold
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We consider the problem of reconstructing the position and the time-dependent optical properties of a linear dispersive medium from OCT measurements. The medium is multi-layered described by a piece-wise inhomogeneous refractive index. The measurement data are from a frequency-domain OCT system and we address also the phase retrieval problem. The parameter identification problem can be formulated as an one-dimensional inverse problem. Initially, we deal with a non-dispersive medium and we derive an iterative scheme that is the core of the algorithm for the frequency-dependent parameter. The case of absorbing medium is also addressed.
description: 32 pages, 8 figures, 3 tables
The Taurus Boundary of Stellar/Substellar (TBOSS) Survey II. Disk Masses from ALMA Continuum Observations
Creators: name: Ward-Duong, K.
name: Patience, J.
name: Bulger, J.
name: van der Plas, G.
name: Ménard, F.
name: Pinte, C.
name: Jackson, A. P.
name: Bryden, G.
name: Turner, N. J.
name: Harvey, P.
name: Hales, A.
name: De Rosa, R. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report 885$μ$m ALMA continuum flux densities for 24 Taurus members spanning the stellar/substellar boundary, with spectral types from M4 to M7.75. Of the 24 systems, 22 are detected at levels ranging from 1.0-55.6 mJy. The two non-detections are transition disks, though other transition disks in the sample are detected. Converting ALMA continuum measurements to masses using standard scaling laws and radiative transfer modeling yields dust mass estimates ranging from $\sim$0.3-20M$_{\oplus}$. The dust mass shows a declining trend with central object mass when combined with results from submillimeter surveys of more massive Taurus members. The substellar disks appear as part of a continuous sequence and not a distinct population. Compared to older Upper Sco members with similar masses across the substellar limit, the Taurus disks are brighter and more massive. Both Taurus and Upper Sco populations are consistent with an approximately linear relationship in $M_{dust}$ to $M_{star}$, although derived power-law slopes depend strongly upon choices of stellar evolutionary model and dust temperature relation. The median disk around early M-stars in Taurus contains a comparable amount of mass in small solids as the average amount of heavy elements in Kepler planetary systems on short-period orbits around M-dwarf stars, with an order of magnitude spread in disk dust mass about the median value. Assuming a gas:dust ratio of 100:1, only a small number of low-mass stars and brown dwarfs have a total disk mass amenable to giant planet formation, consistent with the low frequency of giant planets orbiting M-dwarfs.
description: 41 pages and 32 figures, with all tables and appendices presented here in their entirety. Accepted for publication in AJ (November 26, 2017)
Baby Skyrmions on the Two-Sphere
Creators: name: Hen, Itay
name: Karliner, Marek
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find the static multi-soliton solutions of the baby Skyrme model on the two-sphere for topological charges 1 =< B =< 14. Numerical full-field results show that the charge-one Skyrmion is spherical, the charge-two Skyrmion is toroidal, and Skyrmions with higher charge all have point symmetries which are subgroups of O(3). We find that a rational map ansatz yields very good approximations to the full-field solutions. We point out a strong connection between the discrete symmetries of our solutions and those of corresponding solutions of the 3D Skyrme model.
description: RevTeX, 6 pages, 1 figure; change of format
A convenient implementation of the overlap between arbitrary Hartree-Fock-Bogoliubov vacua for projection
Creators: name: Gao, Zao-Chun
name: Hu, Qing-Li
name: Chen, Y. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Overlap between Hartree-Fock-Bogoliubov(HFB) vacua is very important in the beyond mean-field calculations. However, in the HFB transformation, the $U,V$ matrices are sometimes singular due to the exact emptiness ($v_i=0$) or full occupation ($u_i=0$) of some single-particle orbits. This singularity may cause some problem in evaluating the overlap between HFB vacua through Pfaffian. We found that this problem can be well avoided by setting those zero occupation numbers to some tiny values (e.g., $u_i,v_i=10^{-8}$). This treatment does not change the HFB vacuum state because $u_i^2,v_i^2=10^{-16}$ are numerically zero relative to 1. Therefore, for arbitrary HFB transformation, we say that the $U,V$ matrices can always be nonsingular. From this standpoint, we present a new convenient Pfaffian formula for the overlap between arbitrary HFB vacua, which is especially suitable for symmetry restoration. Testing calculations have been performed for this new formula. It turns out that our method is reliable and accurate in evaluating the overlap between arbitrary HFB vacua.
description: 5 pages, 2 figures. Published version
Detection of X-ray flares from AX J1714.1-3912, the unidentified source near RX J1713.7-3946
Creators: name: Miceli, Marco
name: Bamba, Aya
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Molecular clouds are predicted to emit nonthermal X-rays when they are close to particle-accelerating supernova remnants (SNRs), and the hard X-ray source AX J1714.1-3912, near the SNR RX J1713.7-3946, has long been considered a candidate for diffuse nonthermal emission associated with cosmic rays diffusing from the remnant to a closeby molecular cloud. We aim at ascertaining the nature of this source by analyzing two dedicated X-ray observations performed with Suzaku and Chandra. We extracted images from the data in various energy bands, spectra, and light curves and studied the long-term evolution of the X-ray emission on the basis of the ~4.5 yr time separation between the two observations. We found that there is no diffuse emission associated with AX J1714.1-3912, which is instead the point-like source CXOU J171343.9-391205. We discovered rapid time variability (timescale ~1 ks), together with a high intrinsic absorption and a hard nonthermal spectrum (power law with photon index Gamma~1.4). We also found that the X-ray flux of the source drops down by 1-2 orders of magnitude on a timescale of a few years. Our results suggest a possible association between AX J1714.1-3912 and a previously unknown supergiant fast X-ray transient, although further follow-up observations are necessary to prove this association definitively.
description: Accepted for publication in Astronomy & Astrophysics. The new version includes a note after acceptance
Equal charge black holes and seven dimensional gauged supergravity
Creators: name: Chow, David D. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present various supergravity black holes of different dimensions with some U(1) charges set equal in a simple, common form. Black hole solutions of seven dimensional U(1)^2 gauged supergravity with three independent angular momenta and two equal U(1) charges are obtained. We investigate the thermodynamics and the BPS limit of this solution, and find that there are rotating supersymmetric black holes without naked closed timelike curves. There are also supersymmetric topological soliton solutions without naked closed timelike curves that have a smooth geometry.
description: 24 pages; v2, v3: minor changes
In-memory computing based on all-optically controlled memristor
Creators: name: Yang, Jing
name: Hu, Lingxiang
name: Shen, Liufeng
name: Wang, Jingrui
name: Cheng, Peihong
name: Lu, Huanming
name: Zhuge, Fei
name: Ye, Zhizhen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Artificial intelligence is widely used in everyday life. However, an insufficient computing efficiency due to the so-called von Neumann bottleneck cannot satisfy the demand for real-time processing of rapidly growing data. Memristive in-memory computing is a promising candidate for highly efficient data processing. However, performance of memristors varies significantly because of microstructure change induced by electric-driven matter migration. Here, we propose an all-optically controlled (AOC) memristor with a simple Au/ZnO/Pt sandwich structure based on a purely electronic tuning mechanism of memconductance. The memconductance can be reversibly tuned only by light irradiation with different wavelengths. The device can be used to perform in-memory computation such as nonvolatile neuromorphic computing and Boolean logic functions. Moreover, no microstructure change is involved during the operation of our AOC memristor which demonstrates superior operation stability. Based on this and its structural simplicity, the device has attractive application prospects for the next generation of computing systems.
description: 44 pages, 19 figures
Relating Process Algebras and Multiset Rewriting for Immediate Decryption Protocols
Creators: name: Bistarelli, Stefano
name: Iliano  Cervesato
name: Lenzini, Gabriele
name: Martinelli, Fabio
Publisher: name: Carnegie Mellon University
Year: 2001
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: When formalizing security protocols, different specification languages support very different reasoning methodologies, whose results are not directly or easily comparable. Therefore, establishing clear mappings among different frameworks is highly desirable, as it permits various methodologies to cooperate by interpreting theoretical and practical results of one system in another. In this paper, we examine the non-trivial relationship between two general verification frameworks: multiset rewriting (MSR) and a process algebra (PA) inspired to CCS and the π calculus. Although defining a simple and general bijection between MSR and PA appears difficult, we show that the sublanguages needed to specify a large class of cryptographic protocols (immediate decryption protocols) admits an effective translation that is not only bijective and trace-preserving, but also induces a weak form of bisimulation across the two languages. In particular, the correspondence sketched in this abstract permits transferring several important trace-based properties such as secrecy and many forms of authentication.
Tracking Cyber Adversaries with Adaptive Indicators of Compromise
Creators: name: Doak, Justin E.
name: Ingram, Joe B.
name: Mulder, Sam A.
name: Naegle, John H.
name: Cox, Jonathan A.
name: Aimone, James B.
name: Dixon, Kevin R.
name: James, Conrad D.
name: Follett, David R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: A forensics investigation after a breach often uncovers network and host indicators of compromise (IOCs) that can be deployed to sensors to allow early detection of the adversary in the future. Over time, the adversary will change tactics, techniques, and procedures (TTPs), which will also change the data generated. If the IOCs are not kept up-to-date with the adversary's new TTPs, the adversary will no longer be detected once all of the IOCs become invalid. Tracking the Known (TTK) is the problem of keeping IOCs, in this case regular expressions (regexes), up-to-date with a dynamic adversary. Our framework solves the TTK problem in an automated, cyclic fashion to bracket a previously discovered adversary. This tracking is accomplished through a data-driven approach of self-adapting a given model based on its own detection capabilities. In our initial experiments, we found that the true positive rate (TPR) of the adaptive solution degrades much less significantly over time than the naive solution, suggesting that self-updating the model allows the continued detection of positives (i.e., adversaries). The cost for this performance is in the false positive rate (FPR), which increases over time for the adaptive solution, but remains constant for the naive solution. However, the difference in overall detection performance, as measured by the area under the curve (AUC), between the two methods is negligible. This result suggests that self-updating the model over time should be done in practice to continue to detect known, evolving adversaries.
description: This was presented at the 4th Annual Conf. on Computational Science & Computational Intelligence (CSCI'17) held Dec 14-16, 2017 in Las Vegas, Nevada, USA
Using Temperature Sensitivity to Estimate Shiftable Electricity Demand: Implications for power system investments and climate change
Creators: name: Roberts, Michael J.
name: Zhang, Sisi
name: Yuan, Eleanor
name: Jones, James
name: Fripp, Matthias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: General Economics (econ.GN)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Economics and business

description: Growth of intermittent renewable energy and climate change make it increasingly difficult to manage electricity demand variability. Centralized storage can help but is costly. An alternative is to shift demand. Cooling and heating demands are substantial and can be economically shifted using thermal storage. To estimate what thermal storage, employed at scale, might do to reshape electricity loads, we pair fine-scale weather data with hourly electricity use to estimate the share of temperature-sensitive demand across 31 regions that span the continental United States. We then show how much variability can be reduced by shifting temperature-sensitive loads, with and without improved transmission between regions. We find that approximately three quarters of within-day, within-region demand variability can be eliminated by shifting just half of temperature-sensitive demand. The variability-reducing benefits of shifting temperature-sensitive demand complement those gained from improved interregional transmission, and greatly mitigate the challenge of serving higher peaks under climate change.
description: 23 pages, plus 16 pages supplement, 4 figures, 1 table, plus supplementary tables and figures
title: ADCO, Sixième cartulaire de Saint-Étienne de Dijon (1662), Cart. 30 (G 133), 441 folios, f. 834
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 834, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 834, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Entropy of water and the temperature-induced stiffening of amyloid networks
Creators: name: Semerdzhiev, Slav A.
name: Lindhoud, Saskia
name: Stefanovic, Anja
name: Subramaniam, Vinod
name: van der Schoot, Paul
name: Claessens, Mireille M. A. E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In water, networks of semi-flexible fibrils of the protein $α$-synuclein stiffen significantly with increasing temperature. We make plausible that this reversible stiffening is a result of hydrophobic contacts between the fibrils that become more prominent with increasing temperature. The good agreement of our experimentally observed temperature dependence of the storage modulus of the network with a scaling theory linking network elasticity with reversible crosslinking enables us to quantify the endothermic binding enthalpy and an estimate the effective size of hydrophobic patches on the fibril surface.
description: 13 pages, 6 figures
Regret Minimization and the Price of Total Anarchy
Creators: name: Avrim  Blum
name: MohammedTaghi  Hajiaghayi
name: Ligett, Katrina
name: Roth, Aaron
Publisher: name: Carnegie Mellon University
Year: 1977
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: We propose weakening the assumption made when studying the price of anarchy: Rather than assume that selfinterested players will play according to a Nash equilibrium (which may even be computationally hard to find), we assume only that selfish players play so as to minimize their own regret. Regret minimization can be done via simple, efficient algorithms even in many settings where the number of action choices for each player is exponential in the natural parameters of the problem. We prove that despite our weakened assumptions, in several broad classes of games, this “price of total anarchy” matches the Nash price of anarchy, even though play may never converge to Nash equilibrium. In contrast to the price of anarchy and the recently introduced price of sinking [15], which require all players to behave in a prescribed manner, we show that the price of total anarchy is in many cases resilient to the presence of Byzantine players, about whom we make no assumptions. Finally, because the price of total anarchy is an upper bound on the price of anarchy even in mixed strategies, for some games our results yield as corollaries previously unknown bounds on the price of anarchy in mixed strategies.
Real-space density profile reconstruction of stacked voids
Creators: name: Pisani, Alice
name: Lavaux, Guilhem
name: Sutter, Paul M.
name: Wandelt, Benjamin D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a non-parametric, model-independent method to reconstruct the spherical density profiles of void stacks in real space, without redshift-space distortions. Our method uses the expected spherical symmetry of stacked voids to build the shape of the spherical density profile of cosmic voids in real space without any assumption about the cosmological model. We test the reconstruction algorithm with both a toy model and a full dark matter simulation. We present the result for the simulation: the reconstruction of the spherical density profile for a simulated stacked void in real space. We also present a first application of the algorithm to reconstruct real cosmic void stacks density profiles in real space from the Sloan Digital Sky Survey (Sutter et al. 2012b). We discuss capabilities of the algorithm and possible future improvements. Reconstructed density profiles from real voids open the way to the study of the spherically averaged dynamical structure of voids.
description: 14 pages, 17 figures. Matches MNRAS published version (one section added after referee comments)