cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Classical Solutions of the TEK Model and Noncommutative Instantons in Two Dimensions
Creators: name: Griguolo, Luca
name: Seminara, Domenico
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The twisted Eguchi-Kawai (TEK) model provides a non-perturbative definition of noncommutative Yang-Mills theory: the continuum limit is approached at large $N$ by performing suitable double scaling limits, in which non-planar contributions are no longer suppressed. We consider here the two-dimensional case, trying to recover within this framework the exact results recently obtained by means of Morita equivalence. We present a rather explicit construction of classical gauge theories on noncommutative toroidal lattice for general topological charges. After discussing the limiting procedures to recover the theory on the noncommutative torus and on the noncommutative plane, we focus our attention on the classical solutions of the related TEK models. We solve the equations of motion and we find the configurations having finite action in the relevant double scaling limits. They can be explicitly described in terms of twist-eaters and they exactly correspond to the instanton solutions that are seen to dominate the partition function on the noncommutative torus. Fluxons on the noncommutative plane are recovered as well. We also discuss how the highly non-trivial structure of the exact partition function can emerge from a direct matrix model computation. The quantum consistency of the TEK formulation is eventually checked by computing Wilson loops in a particular limit.
description: 41 pages, JHEP3. Minor corrections, references added
On an application of Tikhonov's fixed point theorem to a nonlocal Cahn--Hilliard type system modeling phase separation
Creators: name: Colli, Pierluigi
name: Gilardi, Gianni
name: Sprekels, Jürgen
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: Cahn-Hilliard system
subject: nonlocal energy
subject: phase separation
subject: singular potentials
subject: initial-boundary value problem
subject: Tikhonov's fixed point theorem
subject: 35K40
subject: 35K86
subject: 45K05
subject: 47H10
subject: 80A22

description: This paper investigates a nonlocal version of a model for phase separation on an atomic lattice that was introduced by P. Podio-Guidugli in Ric. Mat. 55 (2006) 105-118. The model consists of an initial-boundary value problem for a nonlinearly coupled system of two partial differential equations governing the evolution of an order parameter ρ and the chemical potential μ. Singular contributions to the local free energy in the form of logarithmic or double-obstacle potentials are admitted. In contrast to the local model, which was studied by P. Podio-Guidugli and the present authors in a series of recent publications, in the nonlocal case the equation governing the evolution of the order parameter contains in place of the Laplacian a nonlocal expression that originates from nonlocal contributions to the free energy and accounts for possible long-range interactions between the atoms. It is shown that just as in the local case the model equations are well posed, where the technique of proving existence is entirely different: it is based on an application of Tikhonov's fixed point theorem in a rather unusual separable and reflexive Banach space.
Sponsored Question Answering
Creators: name: Mordo, Tommy
name: Tennenholtz, Moshe
name: Kurland, Oren
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: The potential move from search to question answering (QA) ignited the question of how should the move from sponsored search to sponsored QA look like. We present the first formal analysis of a sponsored QA platform. The platform fuses an organic answer to a question with an ad to produce a so called {\em sponsored answer}. Advertisers then bid on their sponsored answers. Inspired by Generalized Second Price Auctions (GSPs), the QA platform selects the winning advertiser, sets the payment she pays, and shows the user the sponsored answer. We prove an array of results. For example, advertisers are incentivized to be truthful in their bids; i.e., set them to their true value of the sponsored answer. The resultant setting is stable with properties of VCG auctions.
Nuclear recoil measurements in Superheated Superconducting Granule detectors
Creators: name: Schmiemann, K.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The response of Superheated Superconducting Granule (SSG) devices to nuclear recoils has been explored by irradiating SSG detectors with a 70Me$\!$V neutron beam. In the past we have tested Al SSG and more recently, measurements have been performed with Sn and Zn detectors. The aim of the experiments was to test the sensitivity of SSG detectors to recoil energies down to a few ke$\!$V. In this paper, the preliminary results of the neutron irradiation of a SSG detector made of Sn granules 15-20$μ$m in diameter will be discussed. For the first time, recoil energy thresholds of $\sim$1ke$\!$V have been measured.
description: 7pages in Latex format, Preprint Bu-He 93/6 (University of Berne, Switzerland), four figures available upon request via schmiemann@lhep.unibe.ch or gabutti@lhep.unibe.ch
Neutrinos from beta processes in a presupernova: probing the isotopic evolution of a massive star
Creators: name: Patton, Kelly M.
name: Lunardini, Cecilia
name: Farmer, Robert J.
name: Timmes, F. X.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a new calculation of the neutrino flux received at Earth from a massive star in the $\sim 24$ hours of evolution prior to its explosion as a supernova (presupernova). Using the stellar evolution code MESA, the neutrino emissivity in each flavor is calculated at many radial zones and time steps. In addition to thermal processes, neutrino production via beta processes is modeled in detail, using a network of 204 isotopes. We find that the total produced $ν_{e}$ flux has a high energy spectrum tail, at $E \gtrsim 3 - 4$ MeV, which is mostly due to decay and electron capture on isotopes with $A = 50 - 60$. In a tentative window of observability of $E \gtrsim 0.5$ MeV and $t < 2$ hours pre-collapse, the contribution of beta processes to the $ν_{e}$ flux is at the level of $\sim90\%$ . For a star at $D=1$ kpc distance, a 17 kt liquid scintillator detector would typically observe several tens of events from a presupernova, of which up to $\sim 30\%$ due to beta processes. These processes dominate the signal at a liquid argon detector, thus greatly enhancing its sensitivity to a presupernova.
description: 14 pages, 5 figures
CM Murchison : nebular formation of fine-grained chondrule rims followed by impact processing on the CM parent body
Creators: name: Hanna, Romy Darlene
name: 0000-0002-2102-8040
Publisher: name: The University of Texas at Austin
Year: 2017
Subjects: Meteorites
Chondrites
Chondrules
Fine-grained rims
Nebula
Asteroid
Deformation
Aqueous alteration
Porosity
EBSD
X-ray
Computed tomography

description: We examine the primitive carbonaceous chondrite, CM Murchison, to infer details concerning its formation and subsequent processing on the CM parent body. We use X-ray computed tomography (XCT) to measure the 3D morphology and spatial relationship of fine-grained rims (FGRs) of Type I chondrules and find that the relationship between FGR volume and interior core radius is well described by a power law function as proposed for FGR accretion in a turbulent nebula by Cuzzi (2004). We also find evidence that the rimmed chondrules were slightly larger than Kolmogorov-stopping-time nebular particles. Evidence against parent body FGR formation includes a positive correlation between rim thickness and chondrule size and no correlation between interior chondrule roughness (used as a proxy for degree of aqueous alteration) and FGR volume. We find that the chondrules are foliated and that the FGRs are compressed in the direction of maximum stress, resulting in rims that are consistently thicker in the plane of foliation. After accretion to the CM parent body, the material within Murchison experienced brittle deformation, porosity loss, and aqueous alteration. XCT reveals that partially altered chondrules define a prominent foliation and weak lineation. The presence of a lineation and evidence for a component of rotational, noncoaxial shear suggest that the deformation was caused by impact. Olivine optical extinction indicates that the sample is classified as shock stage S1 and electron microscopy reveals that plastic deformation was minimal and that brittle deformation was the dominant microstructural strain-accommodating mechanism. Evidence such as serpentine veins parallel to the foliation fabric and crosscutting alteration veins strongly suggest that some aqueous alteration post-dated or was contemporaneous with the deformation and that multiple episodes of fracturing and mineralization occurred. Finally, using the deformed shape of the chondrules we estimate the strain and infer that the original bulk porosity of Murchison before deformation was 32.2 – 53.4%. Our findings suggest that significant porosity loss, deformation, and compaction from impact can occur on chondrite parent bodies whose samples record only a low level of shock, and that significant chondrule deformation can result from brittle processes and does not require plastic deformation of grains.
Braking indices and spin evolution: something is loose inside neutron stars
Creators: name: Espinoza, Cristóbal M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Braking indices are used to describe the evolution of pulsars rotation, and can offer insights into the braking mechanism that dominates the slow down. Here we discuss the main difficulties associated with measuring braking indices and the complexity of interpreting these measurements. Considering recent braking index measurements on pulsars with large and regular glitches, we comment on the significant effects that the loosely coupled superfluid inside pulsars might have on their spin evolution.
description: 4 pages. Proceedings IAU Symposium 337, Pulsar Astrophysics - The Next 50 Years
Skewness as a probe of non-Gaussian initial conditions
Creators: name: Durrer, Ruth
name: Juszkiewicz, Roman
name: Kunz, Martin
name: Uzan, Jean-Philippe
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compute the skewness of the matter distribution arising from non-linear evolution and from non-Gaussian initial perturbations. We apply our result to a very generic class of models with non-Gaussian initial conditions and we estimate analytically the ratio between the skewness due to non-linear clustering and the part due to the intrinsic non-Gaussianity of the models. We finally extend our estimates to higher moments.
description: 5 pages, 2 ps-figs., accepted for publication in PRD, rapid comm
МИГРАЦИОННЫЕ УГРОЗЫ СТАБИЛЬНОСТИ И КОНСОЛИДАЦИИ ГРАЖДАНСКОГО ОБЩЕСТВА В РЕСПУБЛИКЕ ДАГЕСТАН
Creators: name: Сагидов Юрий Нурмагомедович
name: Хаджалова Хадижат Магомедовна
Publisher: name: УЭПС: управление, экономика, политика, социология
Year: 2019
Subjects: миграция
миграционные угрозы
социальная ста-бильность
формирование гражданского общества
Республика Дагестан

description: В статье рассматриваются вопросы стабильности и консолидации граж-данского общества в Республике Дагестан. Показано, что основным фак-тором, препятствующим достижению позитивных результатов в процес-сах стабилизации и консолидации общества и формированию граждан-ского общества, является наличие миграционных угроз. Важнейшим условием ускорения процессов стабилизации является достижение ощу-тимых результатов в подъеме экономики.
Twisted Six Dimensional Gauge Theories on Tori, Matrix Models, and Integrable Systems
Creators: name: Ganguli, Surya
name: Ganor, Ori J.
name: Gill, James A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the Dijkgraaf-Vafa technique to study massive vacua of 6D SU(N) SYM theories on tori with R-symmetry twists. One finds a matrix model living on the compactification torus with a genus 2 spectral curve. The Jacobian of this curve is closely related to a twisted four torus T in which the Seiberg-Witten curves of the theory are embedded. We also analyze R-symmetry twists in a bundle with nontrivial first Chern class which yields intrinsically 6D SUSY breaking and a novel matrix integral whose eigenvalues float in a sea of background charge. Next we analyze the underlying integrable system of the theory, whose phase space we show to be a system of N-1 points on $T$. We write down an explicit set of Poisson commuting Hamiltonians for this system for arbitrary N and use them to prove that equilibrium configurations with respect to all Hamiltonians correspond to points in moduli space where the Seiberg-Witten curve maximally degenerates to genus 2, thereby recovering the matrix model spectral curve. We also write down a conjecture for a dual set of Poisson commuting variables which could shed light on a particle-like interpretation of the system.
description: 32 pages
Open Badges: A Low-Cost Toolkit for Measuring Team Communication and Dynamics
Creators: name: Lederman, Oren
name: Calacci, Dan
name: MacMullen, Angus
name: Fehder, Daniel C.
name: Murray, Fiona E.
name: Pentland, Alex 'Sandy'
Publisher: name: arXiv
Year: 2017
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: We present Open Badges, an open-source framework an toolkit for measuring and shaping face-to-face social interactions using either custom hardware devices or smart phones, and real-time web-based visualizations. Open Badges is a modular system that allows researchers to monitor and collect interaction data from people engaged in real-life social settings. In this paper we describe the technical aspects of the Open Badges project and the motivation for its creation.
Holographic assembly of quasicrystalline photonic heterostructures
Creators: name: Roichman, Yael
name: Grier, David G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Quasicrystals have a higher degree of rotational and point-reflection symmetry than conventional crystals. As a result, quasicrystalline heterostructures fabricated from dielectric materials with micrometer-scale features exhibit interesting and useful optical properties including large photonic bandgaps in two-dimensional systems. We demonstrate the holographic assembly of two-dimensional and three-dimensional dielectric quasicrystalline heterostructures, including structures with specifically engineered defects. The highly uniform quasiperiodic arrays of optical traps used in this process also provide model aperiodic potential energy landscapes for fundamental studies of transport and phase transitions in soft condensed matter systems.
description: 3 pages, 3 figures, submitted to Optics Express
title: Two sisters (v.2)
title: Deux soeurs (v.2)
titleType: AlternativeTitle
Creators: name: Mazaudon, Martine
name: Michailovsky, Boyd
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Hayu
subject: vay

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
Nuclear Ground-State Masses and Deformations
Creators: name: Möller, P.
name: Nix, J. R.
name: Myers, W. D.
name: Swiatecki, W. J.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We tabulate the atomic mass excesses and nuclear ground-state deformations of 8979 nuclei ranging from $^{16}$O to $A=339$. The calculations are based on the finite-range droplet macroscopic model and the folded-Yukawa single-particle microscopic model. Relative to our 1981 mass table the current results are obtained with an improved macroscopic model, an improved pairing model with a new form for the effective-interaction pairing gap, and minimization of the ground-state energy with respect to additional shape degrees of freedom. The values of only 9 constants are determined directly from a least-squares adjustment to the ground-state masses of 1654 nuclei ranging from $^{16}$O to $^{263}$106 and to 28 fission-barrier heights. The error of the mass model is 0.669~MeV for the entire region of nuclei considered, but is only 0.448~MeV for the region above $N=65$.
description: 50 pages plus 20 PostScript figures and 160-page table obtainable by anonymous ftp from t2.lanl.gov in directory masses, LA-UR-93-3083
Leveraging Graph Structures to Detect Hallucinations in Large Language Models
Creators: name: Nonkes, Noa
name: Agaronian, Sergei
name: Kanoulas, Evangelos
name: Petcu, Roxana
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Large language models are extensively applied across a wide range of tasks, such as customer support, content creation, educational tutoring, and providing financial guidance. However, a well-known drawback is their predisposition to generate hallucinations. This damages the trustworthiness of the information these models provide, impacting decision-making and user confidence. We propose a method to detect hallucinations by looking at the structure of the latent space and finding associations within hallucinated and non-hallucinated generations. We create a graph structure that connects generations that lie closely in the embedding space. Moreover, we employ a Graph Attention Network which utilizes message passing to aggregate information from neighboring nodes and assigns varying degrees of importance to each neighbor based on their relevance. Our findings show that 1) there exists a structure in the latent space that differentiates between hallucinated and non-hallucinated generations, 2) Graph Attention Networks can learn this structure and generalize it to unseen generations, and 3) the robustness of our method is enhanced when incorporating contrastive learning. When evaluated against evidence-based benchmarks, our model performs similarly without access to search-based methods.
Additional file 2: of Novel genotypes and phenotypes among Chinese patients with Floating-Harbor syndrome
Creators: name: Zhang, Shujie
name: Chen, Shaoke
name: Qin, Haisong
name: Yuan, Haiming
name: Pi, Yalei
name: Yang, Yu
name: Huang, Hui
name: Li, Guimei
name: Sun, Yan
name: Wang, Zhihua
name: Ma, Huamei
name: Fu, Xiaoling
name: Zhou, Ting
name: Wang, Jian
name: Zhang, Huifeng
name: Shen, Yiping
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Virology
subject: Computational Biology

description: Table S1. Clinical details of 12 FHS patients in our cohort. (DOCX 19 kb)
title: Tiger
title: Le tigre
titleType: AlternativeTitle
Creators: name: Mazaudon, Martine
name: Michailovsky, Boyd
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Hayu
subject: vay

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
ГОСУДАРСТВЕННОЕ РЕГУЛИРОВАНИЕ ТУРИСТИЧЕСКОЙ ДЕЯТЕЛЬНОСТИ В РЕСПУБЛИКЕ ДАГЕСТАН
Creators: name: Адамова Румина Абдурахмановна
Publisher: name: УЭПС: управление, экономика, политика, социология
Year: 2019
Subjects: туризм
туристическая политика
рекреационная дея-тельность
дестинация
туристический рынок

description: В статье рассмотрены основные аспекты развития туристической отрас-ли в Дагестане. Раскрыты условия развития рекреационной и туристиче-ской деятельности в Республике Дагестан. Рассматриваются туристиче-ская политика Российской Федерации, а также туристическая политика Республики Дагестан.
title: Εκχύλιση με καρβοξυλικά οξέα μετάλλων στρατηγικής σημασίας από ιπτάμενη τέφρα Αγ. Δημητρίου Κοζάνης. Ανάλυση αποτελεσμάτων με μεθόδους στατιστικής προσομοίωσης

Creators: name: Παρτσαλακη Εμμανουελα
Publisher: name: Technical University of Crete
Year: 2024

description: Σκοπός της παρούσας εργασίας, είναι η διερεύνηση της δυνατότητας εκχύλισης, με καρβοξυλικά οξέα, μετάλλων στρατηγικής σημασίας από ιπτάμενη τέφρα που προέρχεται από την καύση λιγνίτη της περιοχής του Αγίου Δημητρίου Κοζάνης. Επιλέχθηκε το οξικό και το κιτρικό οξύ, ως πιο φιλικά προς το περιβάλλον μέσα εκχύλισης και τα μέταλλα που εξετάστηκαν ήταν:  Li, La, Ce, Cr, Ni, Zn, Co και Mn.
Πραγματοποιήθηκαν:
Α) Χαρακτηρισμός του δείγματος της ιπτάμενης τέφρας:
    Ορυκτολογική ανάλυση με περιθλασιμετρία ακτίνων Χ (XRD)
    Χημική ανάλυση (κύρια στοιχεία) με φασματομετρία ακτίνων Χ φθορισμού (XRF)
    Ποσοτικός προσδιορισμός της περιεκτικότητας των στοιχείων ενδιαφέροντος με φασματομετρία μάζας επαγωγικά συζευγμένου πλάσματος (ICP-MS).
Β) Εκχυλίσεις με καρβοξυλικά οξέα
Πραγματοποιήθηκαν εκχυλίσεις με κιτρικό και οξικό οξύ και μελετήθηκε η επίδραση της θερμοκρασίας του χρόνου και της συγκέντρωσης του οξέος στη διαδικασία.
Γ) Στατιστική  προσομοίωση
Πραγματοποιήθηκε προσομοίωση χρησιμοποιώντας τη μέθοδο Monte Carlo με εστίαση στην ομοιόμορφη κατανομή πιθανοτήτων.
Οι περιεκτικότητες που προσδιορίστηκαν για τα στοιχεία Li, La, Ce, Cr, Ni, Zn, Co και Mn, είναι 126, 44, 81, 285, 229, 58, 17 και 384 mg/kg αντίστοιχα. Από τις δοκιμές εκχύλισης που πραγματοποιήθηκαν παρατηρήθηκε ότι η ανάκτηση των μετάλλων κυμάνθηκε από 10% έως 71%. Τέλος μέσω της στατιστικής ανάλυσης, προσδιορίστηκε η βέλτιστη καμπύλη προσομοίωσης για τη μεταβολή της ποσοστιαίας ανάκτησης σε σχέση με το χρόνο τη θερμοκρασία και τη συγκέντρωση του οξέος.
Incomplete Continuous-Time Securities Markets with Stochastic Income Volatility
Creators: name: Christensen, Peter O.
name: Larsen, Kasper
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: We derive closed-form solutions for the equilibrium interest rate and market price of risk processes in an incomplete continuous-time market with uncertainty generated by Brownian motions. The economy has a finite number of heterogeneous exponential utility investors, who receive partially unspanned income and can trade continuously. Countercyclical stochastic income volatility generates a countercyclical equilibrium market price of risk process and a procyclical equilibrium interest rate process, and we show that when the investors’ unspanned income volatility is countercyclical, the resulting equilibrium displays both lower interest rates and higher risk premia compared to the equilibrium in an otherwise identical complete market.
Global weak solutions of the Teichmüller harmonic map flow into general targets
Creators: name: Rupflin, Melanie
name: Topping, Peter M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We analyse finite-time singularities of the Teichmüller harmonic map flow -- a natural gradient flow of the harmonic map energy -- and find a canonical way of flowing beyond them in order to construct global solutions in full generality. Moreover, we prove a no-loss-of-topology result at finite time, which completes the proof that this flow decomposes an arbitrary map into a collection of branched minimal immersions connected by curves.
The X/gamma-ray correlation in NGC 4945 and the nature of its gamma-ray source
Creators: name: Wojaczynski, Rafal
name: Niedzwiecki, Andrzej
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report hints for the correlation between the X-ray and gamma-ray emission in the nearby galaxy NGC 4945, which harbors both an active galactic nucleus and a nuclear starburst region. We have divided the Fermi/LAT observations of NGC 4945 into two datasets, comprising events detected during the low (L) and high (H) level of X-ray emission from the active nucleus of this galaxy, determined using the Swift/BAT light curve. Both datasets contain an equal amount of 3.8 years of LAT data and NGC 4945 is detected with a similar statistical significance of ~15 $σ$ in L and 14 $σ$ in H. However, the slope of the gamma-ray spectrum hardens with the increase of the X-ray flux, with the photon index $Γ$ = 2.47 +/- 0.07 in L and 2.11 +/- 0.08 in H. The change is confirmed by a systematic variation of the spectral energy distribution as well as a substantial reversal of the gamma-ray signal in significance maps for low and high gamma-ray energies. The X/gamma-ray correlation indicates that the gamma-ray production is dominated by the active nucleus rather than by cosmic rays interacting with the interstellar medium. We discuss possible locations of the gamma-ray source. We also compare NGC 4945 with other starburst galaxies detected by LAT and we note similarities between those with active nuclei, e.g. unlikely high efficiencies of gamma-ray production in starburst scenario, which argues for a significant contribution of their active nuclei to the gamma-ray emission.
description: ApJ in press
Improved approximation algorithms for MAX k-CUT and MAX BISECTION
Creators: name: Frieze
name: Jerrum
Publisher: name: Carnegie Mellon University
Year: 1994
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Abstract: "Polynomial-time approximation algorithms with non-trivial performance guarantees are presented for the problems of (a) partitioning the vertices of a weighted graph into k blocks so as to maximise the weight of crossing edges, and (b) partitioning the vertices of a weighted graph into two blocks of equal cardinality, again so as to maximise the weight of crossing edges. The approach, pioneered by Goemans and Williamson, is via a semidefinite relaxation."
Supersymmetry and discrete transformations on S^1 with point singularities
Creators: name: Nagasawa, Tomoaki
name: Sakamoto, Makoto
name: Takenaga, Kazunori
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate N-extended supersymmetry in one-dimensional quantum mechanics on a circle with point singularities. For any integer n, N=2n supercharges are explicitly constructed and a class of point singularities compatible with supersymmetry is clarified. Key ingredients in our construction are n sets of discrete transformations, each of which forms an su(2) algebra of spin 1/2. The degeneracy of the spectrum and spontaneous supersymmetry breaking are briefly discussed.
description: 11 pages, 3 figures
title: One-span
title: Un-empan
titleType: AlternativeTitle
Creators: name: Mazaudon, Martine
name: Michailovsky, Boyd
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Hayu
subject: vay

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
PROUD: PaRetO-gUided Diffusion Model for Multi-objective Generation
Creators: name: Yao, Yinghua
name: Pan, Yuangang
name: Li, Jing
name: Tsang, Ivor
name: Yao, Xin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recent advancements in the realm of deep generative models focus on generating samples that satisfy multiple desired properties. However, prevalent approaches optimize these property functions independently, thus omitting the trade-offs among them. In addition, the property optimization is often improperly integrated into the generative models, resulting in an unnecessary compromise on generation quality (i.e., the quality of generated samples). To address these issues, we formulate a constrained optimization problem. It seeks to optimize generation quality while ensuring that generated samples reside at the Pareto front of multiple property objectives. Such a formulation enables the generation of samples that cannot be further improved simultaneously on the conflicting property functions and preserves good quality of generated samples. Building upon this formulation, we introduce the PaRetO-gUided Diffusion model (PROUD), wherein the gradients in the denoising process are dynamically adjusted to enhance generation quality while the generated samples adhere to Pareto optimality. Experimental evaluations on image generation and protein generation tasks demonstrate that our PROUD consistently maintains superior generation quality while approaching Pareto optimality across multiple property functions compared to various baselines.
Holographic optical trapping
Creators: name: Grier, David G.
name: Roichman, Yael
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Holographic optical tweezers use computer-generated holograms to create arbitrary three-dimensional configurations of single-beam optical traps useful for capturing, moving and transforming mesoscopic objects. Through a combination of beam-splitting, mode forming, and adaptive wavefront correction, holographic traps can exert precisely specified and characterized forces and torques on objects ranging in size from a few nanometers to hundreds of micrometers. With nanometer-scale spatial resolution and real-time reconfigurability, holographic optical traps offer extraordinary access to the microscopic world and already have found applications in fundamental research and industrial applications.
description: 8 pages, 7 figures, invited contribution to Applied Optics focus issue on Digital Holography
title: ADCO, Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Cart. 31 (G 135), 549 folios, f. 0217
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: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0217, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0217, 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
ВЛИЯНИЕ ЦИФРОВЫХ ТЕХНОЛОГИЙ НА БИЗНЕС-ПРОЦЕССЫ ПРЕДПРИЯТИЯ
Creators: name: Попов Иван Вячеславович
name: Киселева Марина Максимовна
name: Толочко Иван Андреевич
Publisher: name: УЭПС: управление, экономика, политика, социология
Year: 2019
Subjects: цифровая экономика
бизнес-процессы
управление
модели управления предприятием
цифровизация

description: В статье рассматриваются возможности внедрения цифровых технологий на предприятии, что меняет не только технологии использования раз-личных оборотных и основных средств, но и модель управления пред-приятием. Обосновывается, что цифровые технологии способны повы-сить эффективность работы предприятия. Применение цифровых техно-логий способствует повышению не только эффективности работы пред-приятия, но и экономического развития страны.
Mapping Cardinality-based Feature Models to Weighted Automata over Featured Multiset Semirings (Extended Version)
Creators: name: Müller, Robert
name: Weiß, Mathis
name: Lochau, Malte
Publisher: name: arXiv
Year: 2024
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Cardinality-based feature models permit to select multiple copies of the same feature, thus generalizing the notion of product configurations from subsets of Boolean features to multisets of feature instances. This increased expressiveness shapes a-priori infinite and non-convex configuration spaces, which renders established solution-space mappings based on Boolean presence conditions insufficient for cardinality-based feature models. To address this issue, we propose weighted automata over featured multiset semirings as a novel behavioral variability modeling formalism for cardinality-based feature models. The formalism uses multisets over features as a predefined semantic domain for transition weights. It permits to use any algebraic structure forming a proper semiring on multisets to aggregate the weights traversed along paths to map accepted words to multiset configurations. In particular, tropical semirings constitute a promising sub-class with a reasonable trade-off between expressiveness and computational tractability of canonical analysis problems. The formalism is strictly more expressive than featured transition systems, as it enables upper-bound multiplicity constraints depending on the length of words. We provide a tool implementation of the behavioral variability model and present preliminary experimental results showing applicability and computational feasibility of the proposed approach.
description: This is the author's version of the work. The definitive version will be published in Proceedings of 28th ACM International Systems and Software Product Lines Conference (SPLC'24)
Resource Letter NSST-1: The Nature and Status of String Theory
Creators: name: Marolf, Donald
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This Resource Letter provides a guide to some of the the introductory and review literature in string theory. It is in no way complete, though it is intended to be of use to students at several levels. Owing to the nature of the subject, even much of the introductory literature is quite technical by the standards of many Resource Letters, requiring prior knowledge of quantum field theory and general relativity. This Resource Letter is thus somewhat different from others. The first part describes a few more popular accounts of string theory, which are primarily addressed to the general public, but those with an understanding of basic physics will be able to read them more deeply and so obtain a useful rough orientation to the field. The second part describes resources that are available at the advanced undergraduate level, and the balance describes string resources for more advanced students. The latter range from general introductions to recent review articles on branes and black holes, gauge/gravity duality, string field theory, non-commutative geometry, non-BPS branes, tachyon condensation, phenomenology, brane worlds, orbifolds, Calabi-Yau manifolds, and holography.
description: 13 pages, reference corrected Thanks to the community for many suggestions
title: Jackal, bear, et al.
title: Le chacal, l'ours, etc.
titleType: AlternativeTitle
Creators: name: Mazaudon, Martine
name: Michailovsky, Boyd
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Hayu
subject: vay

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
РОЛЬ ЭЛЕКТРОННЫХ ТОРГОВ В ЭКОНОМИКЕ РОССИИ. АНАЛИЗ ДЕЯТЕЛЬНОСТИ КРУПНЕЙШИХ ЭЛЕКТРОННЫХ ПЛОЩАДОК
Creators: name: Сагидова Наида Гамидовна
Publisher: name: УЭПС: управление, экономика, политика, социология
Year: 2019
Subjects: экономика
электронные торги
Internet
торговая площадка
государственные закупки
заказчик
поставщик
анализ дан-ных
контрактная система
снижение документооборота

description: Определена роль и назначение электронных торгов в экономике России. Проанализированы крупнейшие торговые площадки, особенности их де-ятельности. Представлены результаты анализа рейтинга крупнейших электронных торговых площадок, на которых осуществлялись закупки в 2018 году. Определен алгоритм выбора подходящей электронной торго-вой площадки в зависимости от типа заказа.
Ideal magnetofluid turbulence in two dimensions
Creators: name: Jordan, Richard
name: Turkington, Bruce
Publisher: name: Carnegie Mellon University
Year: 1995
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Abstract: "A continuum model of coherent structures in two-dimensional magnetohydrodynamic turbulence is developed. These structures are macroscopic states which persist amongst the turbulent microscopic fluctuations, typically as magnetic islands with flow. They are modeled as statistical equilibrium states for the ideal (nondissipative) dynamics, which conserves energy and families of cross-helicity and flux integrals. The model predicts that an ideal magnetofluid will evolve into a turbulent relaxed state having steady mean magnetic and velocity fields, and Gaussian local fluctuations in these fields. Excellent qualitative and quantitative agreement is found with the results of direct numerical simulations. A rigorous justification of the theory is also provided, in the sense that the continuum model is derived from a lattice model in a fixed-volume, small-spacing limit. This construction uses the discrete Fourier transform to link the discretization of x-space with the truncation of k-space. The lattice model is defined by the most probable distribution on the discretized phase space that respects the approximated dynamical constraints. A concentration property shows that this distribution is equivalent to the microcanonical distribution in the continuum limit."
СОВЕРШЕНСТВОВАНИЕ МЕХАНИЗМА ОРГАНИЗАЦИИ ЭЛЕКТРОННЫХ ТОРГОВ В ЭКОНОМИКЕ РОССИИ
Creators: name: Сагидова Наида Гамидовна
Publisher: name: УЭПС: управление, экономика, политика, социология
Year: 2019
Subjects: совершенствование механизма
система
электронные торги
достоинства и недостатки системы электронных торгов
организа-ция государственных закупок
заказчик
поставщик
контрактная систе-ма
коррупция в сфере электронных торгов
применение новых техноло-гий

description: Определены достоинства и недостатки в механизме организации элек-тронных торгов. Предложены пути развития и совершенствования меха-низма электронных торгов, как одного из приоритетных направлений развития экономики России.
Global Melnikov Theory in Hamiltonian Systems with General Time-dependent Perturbations
Creators: name: Gidea, Marian
name: de la Llave, Rafael
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider a mechanical system consisting of $n$ penduli and a $d$-dimensional generalized rotator subject to a time-dependent perturbation. The perturbation is not assumed to be either Hamiltonian, or periodic or quasi-periodic. The strength of the perturbation is given by a parameter $ε\in\mathbb{R}$. For all $|ε|$ sufficiently small, the augmented flow has a $(2d + 1)$-dimensional normally hyperbolic locally invariant manifold $\tildeΛ_ε$. We define a Melnikov vector, which gives the first order expansion of the displacement of the stable and unstable manifolds of $\tildeΛ_0$ under the perturbation. We provide an explicit formula for the Melnikov vector in terms of convergent improper integrals of the perturbation along homoclinic orbits of the unperturbed system. We show that if the perturbation satisfies some explicit non-degeneracy conditions, then the stable and unstable manifolds of $\tildeΛ_ε$, $W^s(\tildeΛ_ε)$ and $W^u(\tildeΛ_ε)$, respectively, intersect along a transverse homoclinic manifold, and, moreover, the splitting of $W^s(\tildeΛ_ε)$ and $W^u(\tildeΛ_ε)$ can be explicitly computed, up to the first order, in terms of the Melnikov vector. This implies that the excursions along some homoclinic trajectories yield a non-trivial increase of order $O(ε)$ in the action variables of the rotator, for all sufficiently small perturbations. The formulas that we obtain are independent of the unperturbed motions and give, at the same time, the effects on periodic, quasi-periodic, or general orbits. When the perturbation is Hamiltonian, we express the effects of the perturbation, up to the first order, in terms of a Melnikov potential. In addition, if the perturbation is periodic, we obtain that the non-degeneracy conditions on the Melnikov potential are generic.
A square peg in a round hole: reflecting on using a participatory health research approach during my PhD
Creators: name: Gilfoyle, Meghan
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: When reflecting on my years as a doctoral student, I recall several questions that often came to mind throughout my journey: what is participatory health research? Is such an approach to research truly feasible in the pursuit of a doctoral degree? Is it worth it, or have I inadvertently made things more challenging for myself? My response to these questions has evolved dramatically alongside my growth and development throughout my PhD. I was presented with an opportunity to explore an approach to participatory health research firsthand; a process which included many jumps, twists, turns, and slides, and at times, left me feeling like a square peg in a round hole. Throughout this process, navigating the breadth of challenges and opportunities presented along the way, I also learned the importance of one’s narrative – in particular, the growth and development made possible when researchers and participatory partners share our stories and reflect together. This paper is part of my story, through my account of ‘our story’. It embraces a narrative-style approach to critical reflection of the participatory process throughout my doctoral studies, emphasising the key challenges posed when working within the boundaries of traditional academic structures. I provide a reflexive account of how these challenges were navigated, which created a range of opportunities at both a theoretical and practical level. I conclude with a response to these initial questions and a hopeful call for change.
Chaotic Scattering in Heavy--Ion Reactions
Creators: name: Baldo, M.
name: Lanza, E. G.
name: Rapisarda, A.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss the relevance of chaotic scattering in heavy--ion reactions at energies around the Coulomb barrier. A model in two and three dimensions which takes into account rotational degrees of freedom is discussed both classically and quantum-mechanically. The typical chaotic features found in this description of heavy-ion collisions are connected with the anomalous behaviour of several experimental data.
description: 35 pages in RevTex (version 3.0) plus 27 PostScript figures obtainable by anonymous ftp from VAXFCT.CT.INFN.IT in directory kaos. Fig. 1 upon request to the authors. To be published in the October Focus issue on chaotic scattering of CHAOS
Discussing controversial issues on social media : examining the role of affordances, fear of isolation and de-individuation
Creators: name: Oz, Mustafa
Publisher: name: The University of Texas at Austin
Year: 2018
Subjects: Social media
Political discussions
Facebook
Twitter
Political engagement
Spiral of silence
Affordances
The SIDE model

description: This dissertation sought to answer whether people more free to express their opinions on controversial topics on Twitter versus Facebook? Three specific affordances support this question: the networks people engage with on each platform, how identifiable they are to other users, and the visibility of their posts (Treem & Leonardi, 2012). In this dissertation, I draw from three related theoretical frameworks to support my argument: the spiral of silence (SOS), the social identity model of deindividuation effects (SIDE), and affordances theory. The results suggested that there were significant differences between Twitter and Facebook in terms of one’s willingness to express opinion. In summary people were more likely to express their opinion on Twitter than Facebook when they think the majority does not support their opinion.
Topology of Force Networks in Granular Media under Impact
Creators: name: Lim, Melody X.
name: Behringer, Robert P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate the evolution of the force network in experimental systems of two-dimensional granular materials under impact. We use the first Betti number, $β_1$, and persistence diagrams, as measures of the topological properties of the force network. We show that the structure of the network has a complex, hysteretic dependence on both the intruder acceleration and the total force response of the granular material. $β_1$ can also distinguish between the nonlinear formation and relaxation of the force network. In addition, using the persistence diagram of the force network, we show that the size of the loops in the force network has a Poisson-like distribution, the characteristic size of which changes over the course of the impact.
Flux reversal in a two-state symmetric optical thermal ratchet
Creators: name: Lee, Sang-Hyuk
name: Grier, David G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A Brownian particle's random motions can be rectified by a periodic potential energy landscape that alternates between two states, even if both states are spatially symmetric. If the two states differ only by a discrete translation, the direction of the ratchet-driven current can be reversed by changing their relative durations. We experimentally demonstrate flux reversal in a symmetric two-state ratchet by tracking the motions of colloidal spheres moving through large arrays of discrete potential energy wells created with dynamic holographic optical tweezers. The model's simplicity and high degree of symmetry suggest possible applications in molecular-scale motors.
description: 4 pages, 5 figures, accepted for publication in Physical Review E, Rapid Communications
title: Jackal and bear
title: Le chacal et l'ours
titleType: AlternativeTitle
Creators: name: Mazaudon, Martine
name: Michailovsky, Boyd
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Hayu
subject: vay

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7