cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gradients of Synchrotron Polarization: Tracing 3D distribution of magnetic fields
Creators: name: Lazarian, A.
name: Yuen, Ka Ho
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We describe a new technique for probing galactic and extragalactic 2D and 3D magnetic field distribution using gradients of polarized synchrotron emission. The fluctuations of magnetic field are elongated along the ambient magnetic field. Therefore, the field variations are maximal perpendicular to the B-field. This allows tracing B-field with synchrotron polarization gradients (SPGs). We demonstrate that the Faraday depolarization allows to map 3D B-field structure by. The depolarization ensures that the polarization gradients sample the regions close to the observer with the sampling depth controlled by the frequency of radiation. We also analyze the B-field properties along the line-of-sight by applying the gradient technique to the wavelength derivative of synchrotron polarization. This Synchrotron Derivative Polarization Gradients (SDPGs) technique can recover the 3D vectors of the underlying B-fields. The new techniques are different from the Faraday tomography as they provide a way to map the 3D distribution of B-fields components perpendicular to the line of sight. In addition, we find that the alignment of gradients of polarization with the synchrotron polarization can be used to separate the contribution of the foreground from the polarization of cosmological origin. We notice that the same alignment is also present for the dust polarization.
description: 24 pages, 19 figures, accepted for publication in ApJ
Optimal Execution in a General One-Sided Limit-Order Book and Endogenous Dynamic Completeness of Financial Models
Creators: name: Predoiu, Silviu Nicolae
Publisher: name: Carnegie Mellon University
Year: 2011
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: This thesis consists of two parts. The first one is a result obtained under the supervision of Steven Shreve and with the collaboration of Gennady Shaikhet. Our work yielded a detailed description of the optimal strategies for a large investor, when she needed to buy a large amount of shares of a stock over a finite time horizon. The dynamics of the limit order book of the underlying stock is a generalization of known results to continuous time and to arbitrary distributions of the said limit order book. See the introduction section in chapter 2 for a more detailed discussion. The second part is a result obtained under the supervision of Dmitry Kramkov. Our work yielded a sufficient condition on the structure of the economic factors, dividends of traded assets and total endowment in a single-agent economy, such that in an Arrow - Debreu - Radner equilibrium the market is complete. The main result is formulated as an integral representation theorem. Our work generalizes and complements fairly recent results in this direction (at the time of this thesis) by requiring less smoothness of the driving diffusion process at the expense of seemingly stronger conditions on the terminal dividends of the assets. See the introduction section in chapter 3 for a more detailed discussion.
title: ADCO, Sixième cartulaire de Saint-Étienne de Dijon (1662), Cart. 30 (G 133), 441 folios, f. 109
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: Petot, Frédéric
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: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP

description: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 109, 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. 109, 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
Accelerating Quantum Universe
Creators: name: Kuzmichev, V. E.
name: Kuzmichev, V. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The origin of negative pressure fluid (the dark energy) is investigated in the quantum model of the homogeneous, isotropic and closed universe filled with a uniform scalar field and a perfect fluid which defines a reference frame. The equations of the model are reduced to the form which allows a direct comparison between them and the equations of the Einsteinian classical theory of gravity. It is shown that quantized scalar field has a form of a condensate which behaves as an antigravitating medium. The theory predicts an accelerating expansion of the universe even if the vacuum energy density vanishes. An antigravitating effect of a condensate has a purely quantum nature. It is shown that the universe with the parameters close to the Planck ones can go through the period of exponential expansion. The conditions under which in semi-classical approximation the universe looks effectively like spatially flat with negative deceleration parameter are determined. The reduction to the standard model of classical cosmology is discussed.
description: 15 pages, v.2 additional explanations and a few corrections are provided
Exact Half-BPS Black Hole Entropies in CHL Models from Rademacher Series
Creators: name: Nally, Richard
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Number Theory (math.NT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The microscopic spectrum of half-BPS excitations in toroidally compactified heterotic string theory has been computed exactly through the use of results from analytic number theory. Recently, similar quantities have been understood macroscopically by evaluating the gravitational path integral on the M-theory lift of the AdS2 near-horizon geometry of the corresponding black hole. In this paper, we generalize these results to a subset of the CHL models, which include the standard compactification of IIA on $K3\times T^2$ as a special case. We begin by developing a Rademacher-like expansion for the Fourier coefficients of the partition functions for these theories, which are modular forms for congruence subgroups. We then interpret these results in a macroscopic setting by evaluating the path integral for the reduced-rank $\mathcal{N} = 4$ supergravities described by these CFTs.
description: 29 pages, no figures. v2: Footnote + citation added
Optimal Design of Miniature Flexural and Soft Robotic Mechanisms
Creators: name: Lum, Guo Zhan
Publisher: name: Carnegie Mellon University
Year: 2017
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Compliant mechanisms are flexible structures that utilize elastic deformation to achieve their desired motions. Using this unique mode of actuation, the compliant mechanisms have two distinct advantages over traditional rigid machines: (1) They can create highly repeatable motions that are critical for many high precision applications. (2) Their high degrees-of-freedom motions have the potential to achieve mechanical functionalities that are beyond traditional machines, making them especially appealing for miniature robots that are currently limited to only having simple rigid-body-motions and gripping functionalities. Unfortunately, despite the potential of compliant mechanisms, there are still several key challenges that restrict them from realizing their full potential. To facilitate this discussion, we first divide the compliant mechanisms into two categories: (1) the stiffer flexural mechanisms that are ideal for high precision applications, and (2) the more compliant miniature soft robots that can reshape their geometries to achieve highly complex mechanical functionalities. The key limitation for existing flexural mechanisms is that their stiffness and dynamic properties cannot be optimized when they have multi-degrees-of-freedom. This limitation has severely crippled the performance of flexural mechanisms because their stiffness and dynamic properties dictate their workspace, transient responses and capabilities to reject disturbances. On the other hand, miniature soft robots that have overall dimensions smaller than 1 cm, are unable to achieve their full potential because existing works do not have a systematic approach to determine the required design and control signals for the robots to generate their desired time-varying shapes.
Exact Results for 1D Conserved Order Parameter Model
Creators: name: Privman, Vladimir
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Recent exact results for a particle-exchange model on a linear lattice, with only irreversible moves reducing the local energy allowed, are reviewed. This model describes a zero-temperature Kawasaki-type phase separation process which reaches a frozen, initial-condition-dependent state at large times.
description: nine pages, plain TeX
title: Task no. 1. Synthesis of bioglass composed of SiO2 (70% mm)-CaO-P2O5 (30% mm) and ordered mesoporous silica materials MCM-41
title: FTIR-20220221-Skwira
titleType: Subtitle
Creators: name: Skwira, Adrianna
Publisher: name: Zenodo
Year: 2024

description: 10.5281/zenodo.10805054
Discontinuous shear-thickening in Brownian suspensions
Creators: name: Kawasaki, Takeshi
name: Berthier, Ludovic
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Discontinuous shear-thickening in dense suspensions naturally emerges from the activation of frictional forces by shear flow in non-Brownian systems close to jamming. Yet, this physical picture is incomplete as most experiments study soft colloidal particles subject to thermal fluctuations. To characterise discontinuous shear-thickening in colloidal suspensions we use computer simulations to provide a complete description of the competition between athermal jamming, frictional forces, thermal motion, particle softness, and shear flow. We intentionally neglect hydrodynamics, electrostatics, lubrication, and inertia, but can nevertheless achieve quantitative agreement with experimental findings. In particular, shear-thickening corresponds to a crossover between frictionless and frictional jamming regimes which is controlled by thermal fluctuations and particle softness and occurs at a softness dependent Péclet number. We also explore the consequences of our findings for constant pressure experiments, and critically discuss the reported emergence of `S-shaped' flow curves. Our work provides the minimal ingredients to quantitatively interpret a large body of experimental work on discontinuous shear-thickening in colloidal suspensions.
description: 17 pages, 9 figures. Accepted for publication in Phys. Rev. E
The Theory of Dynamical Random Surfaces with Extrinsic Curvature
Creators: name: Ambjorn, J.
name: A
name: Irback
name: Jurkiewicz, J.
name: Petersson, B.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze numerically the critical properties of a two-dimensional discretized random surface with extrinsic curvature embedded in a three-dimensional space. The use of the toroidal topology enables us to enforce the non-zero external extension without the necessity of defining a boundary and allows us to measure directly the string tension. We show that a phase transition from the crumpled phase to the smooth phase observed earlier for a spherical topology appears also for a toroidal surface for the same finite value of the coupling constant of the extrinsic curvature term. The phase transition is characterized by the vanishing of the string tension. We discuss the possible non-trivial continuum limit of the theory, when approaching the critical point. Numerically we find a value of the critical exponent $\n$ to be between .38 and .42. The specific heat, related to the extrinsic curvature term seems not to diverge (or diverge slower than logarithmically) at the critical point.
description: figures available as postscript files on request. 28 pages plus figures
Operational Decisions under the Influence of Government Regulation
Creators: name: Wang, Xin
Publisher: name: Carnegie Mellon University
Year: 2016
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business

description: This dissertation focuses on examining firms' operational decisions under the influence of government regulation, including the regulation of anti-trust agencies and environmental protection agencies.
title: 01_0725
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
First-principles calculation of the temperature dependence of the optical response of bulk GaAs
Creators: name: Ibrahim, Z. A.
name: Shkrebtii, A. I.
name: Lee, M. J. G.
name: Vynck, K.
name: Teatro, T.
name: Richter, W.
name: Trepk, T.
name: Zettler, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A novel approach has been developed to calculate the temperature dependence of the optical response of a semiconductor. The dielectric function is averaged over several thermally perturbed configurations that are extracted from molecular dynamic simulations. The calculated temperature dependence of the imaginary part of the dielectric function of GaAs is presented in the range from 0 to 700 K. This approach that explicitly takes into account lattice vibrations describes well the observed thermally-induced energy shifts and broadening of the dielectric function.
description: 6 pages, 3 figures
Branes and 2d N=(2,2) gauge theories with orthogonal and symplectic groups
Creators: name: Bergman, Oren
name: Avraham, Eran
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct two-dimensional N=(2,2) supersymmetric gauge theories with orthogonal and symplectic groups using branes and orientifold planes in Type IIA string theory. A number of puzzles regarding the construction, including the effect of exchanging NS5-branes on an orientifold 2-plane, are resolved by lifting the configurations to M theory. The low energy properties and conjectured dualities of these theories are reproduced in the M-brane description. A similar construction of N=(4,4) theories with orthogonal and symplectic groups leads to new duality conjectures for these theories.
description: 22 pages, 27 figures. Type IIA linking number computation corrected in section 4.5. Clarified and expanded the discussion of N=(4,4) dualities in section 5. References added
Nonlinear Schrödinger Equation for Superconductors
Creators: name: Ao, Ping
name: Thouless, David J.
name: Zhu, X. -M.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Using the Hartree-Fock-Bogoliubov factorization of the density matrix and the Born-Oppenheimer approximation we show that the motion of the condensate satisfies a nonlinear Schrödinger equation in the zero temperature limit. The Galilean invariance of the equation is explicitly manifested. {}From this equation some general properties of a superconductor, such as Josephson effects, the Magnus force, and the Bogoliubov-Anderson mode can be obtained readily.
description: Latex, 12 pages
Stochastic inflation with quantum and thermal noise
Creators: name: Haba, Z.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We add a thermal noise to Starobinsky equation of slow roll inflation. We calculate the number of e-folds of the stochastic system. The power spectrum and the spectral index are evaluated from the fluctuations of e-folds using an expansion in the quantum and thermal noise terms.
description: 8 pages
FOSS N4O Management Hub: Using RSE skills and Open Source Software to propose a heterogenious Management Hub in NFDI4Objects
Creators: name: Fricke, Fabian
name: Thiery, Florian
Publisher: name: Squirrel Papers, via Zenodo
Year: 2024

description: NFDI4Objects (N4O) represents a broad community dealing with material remains of human history from around 3 million years. RSE skills and the combination of FOSS help to create a Management Hub. The hub of our planned management tool will be a Nextcloud instance. This instance will provide a set of basic services (file sharing, task management, notes, shared calendars) and other FOSS services can be easily integrated. These services include Rocket Chat for communication, OpenProject for project launch planning, Zammad as a helpdesk ticketing system, Collabora for online document editing, and LimeSurvey combined with ShinyR for surveys. On top of that, reports could be imported/exported into a Wikibase using the included frameworks to create a Management Knowledge Graph.
D7.1 Dissemination, Communication & Exploitation
Creators: name: Lovasz, Gabriella
Publisher: name: Zenodo
Year: 2023

description: INSPIRE is a €5 million project led by the Foundation of Open University of Catalonia and funded by Horizon Europe, the European Union’s Research and Innovation programme. The project, launched in October 2022 and ending in September 2026, is implemented by a consortium of 14 partners from Europe (Austria, Belgium, Denmark, Germany, Greece, Hungary, the Netherlands, Poland, Slovenia, Spain) and Latin America (Argentina). The partnership reunites gender experts and practitioners from different universities and research centres with broad experience in institutions’ structural changes.

INSPIRE’s mission is to become Europe’s sustainable centre of excellence, globally renowned for the quality of its research and analysis produced on inclusive gender equality in research and innovation. It brings together cutting-edge knowledge, ambitious policy approaches, and innovative practices to provide a gateway for scholars, equality experts, practitioners and trainers to connect and share resources, co-create new ones, and link strategically with public and private institutions to benefit the European Research Area.

The project addresses the current issues in the field, mainly the geographical and sectorial disparities in regard to GEP implementation, the low level of intersectionality, and the unconscious gender bias among decision-makers, through a combination of developing knowledge and providing concrete support in capacity building. INSPIRE’s core actions include:

• Conducting a GEP monitoring survey throughout Europe that will shed light on the reasons behind GEP success and failure• Filling key knowledge gaps on intersectional policies through case studies and analyses Creating 4 Knowledge & Support Hubs (KSHs) that will assist 12 communities of practice involving more than 95 institutions to facilitate the implementation of Gender Equality Plans in areas where progress has been slow or insufficient
Online Lidar and Vision based Ego-motion Estimation and Mapping
Creators: name: Zhang, Ji
Publisher: name: Carnegie Mellon University
Year: 2017
Subjects: subject: 80101 Adaptive Agents and Intelligent Robotics
subject: FOS: Computer and information sciences

description: In many real-world applications, ego-motion estimation and mapping must be conducted online. In the robotics world, especially, real-time motion estimates are important for control of autonomous vehicles, while online generated maps are crucial for obstacle avoidance and path planning. Further, the complete map of a traversed environment can be taken as an input for further processing such as scene segmentation, 3D reasoning, and virtual reality. To date, fusing a large amount of data from a variety of sensors in real-time remains a nontrivial problem. The problem is particularly hard if is to be solved in 3D, accurately, robustly, and in a small form factor. This thesis proposes to tackle the problem by leveraging range, vision, and inertial sensing in a coarse-to-fine manor, through multi-layer processing. In a modularized processing pipeline, modules taking light computation execute at high frequencies to gain robustness w.r.t. high-rate, rapid motion. Modules consuming heavy processing run at low frequencies to ensure accuracy in resulting motion estimates and maps. Further, the modularized processing pipeline is capable of handling sensor degradation by automatic reconfiguration bypassing failure modules. Vision-based methods typically fail in low-light or texture-less scenes. Likewise, lidar-based methods are problematic in symmetric or extruded environments such as a long and straight corridor. When such degradation occurs, the proposed pipeline automatically determines a degraded subspace in the problem state space, and solves the problem partially in the well-conditioned subspace. Consequently, the final solution is formed by combination of the “healthy” parts from each module. The proposed ego-motion estimation and mapping methods have been validated in extensive experiments ranging from car-mounted, hand-carried, to drone-attached setups. Experiments are conducted in various environments covering structured urban areas as well as unstructured natural scenes. Results indicate that the methods can carry out high-precision estimation over a long distance of travel as well as robustness w.r.t. high-speed, aggressive motion and environmental degradation.
Semileptonic B decays and the inclusive determination of |V(ub)|
Creators: name: Giordano, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a new theoretical framework for the study of $B\to X_u \ell ν$ decays, which includes all known perturbative and non-perturbative contributions and a description of leading and subleading Fermi motion effects. The perturbative and non-perturbative regimes are separated by a ``hard'' Wilsonian cutoff $μ\sim 1$ GeV. We bring into focus some problems related to the high $q^2$ region and to Weak Annihilation effects. We provide estimates of the CKM parameter $|V_{ub}|$ using the described framework and discuss the related theoretical uncertainty.
description: Dec 2007. 4pp. To appear in the proceedings of the 2007 Europhysics Conference on High Energy Physics (EPS-HEP2007), Manchester, England, 19-25 Jul 2007
Evidence for maximality of strong interactions from LHC forward data
Creators: name: Martynov, E.
name: Nicolescu, B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is important to check if the Froissaron-Maximal Odderon (FMO) approach is the only model in agreement with the LHC data. We therefore generalized the FMO approach by relaxing the $\ln^2s$ constraints both in the even-and odd-under-crossing amplitude. We show that, in spite of a considerable freedom of a large class of amplitudes, the best fits bring us back to the maximality of strong interaction. Moreover, if we leave Odderon Regge pole intercept $α_O(0)$ completely free we find a very good solution for $α_O(0)$ near -1 in agreement with the result of oddballs spectroscopy in QCD based on AdS/CFT correspondence.
description: Section 5 is extended, one reference is replaced, none of results is changed
[Nota sobre el realismo socialista – Sobre 26]
Creators: name: Marcos, Ana
name: Ana, Marcos
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2022
Subjects: Politique
Réalisme socialiste

description: Texte intitulé : "Notas sobre el realismo socialista". En épigraphe, une citation de Maxime Gorki, et une de Louis Aragon (publiée dans Les Lettres Française en janvier 1960).
description: Notes : Papier blanc jauni. Stylo bleu. Pas de correction. Une tache bleue triangulaire dans la partie inférieur des deux premières pages. Celle-ci n’affecte pas la lecture. Les numéros 1, 2, et 3 inscrit au crayon de papier apparaissent respectivement sur les 1ère , 5e et 9e pages.
description: Source: Num. Ref. : MA-AA-026
description: Source: Localisation du fonds : Archives Marcos Ana. Madrid (Espagne)
description: created: s.d.
On the BV formalism of open superstring field theory in the large Hilbert space
Creators: name: Matsunaga, Hiroaki
name: Nomura, Mitsuru
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct several BV master actions for open superstring field theory in the large Hilbert space. First, we show that a naive use of the conventional BV approach breaks down at the third order of the antifield number expansion, although it enables us to define a simple "string antibracket" taking the Darboux form as space-time antibrackets. This fact implies that in the large Hilbert space, "string fields-antifields" should be reassembled to obtain master actions in a simple manner. We determine the assembly of the string antifields on the basis of Berkovits' constrained BV approach, and give solutions to the master equation defined by Dirac antibrackets on the constrained string field-antifield space. It is expected that partially gauge-fixing enables us to relate superstring field theories based on the large and small Hilbert spaces directly: Reassembling string fields-antifields is rather natural from this point of view. Finally, inspired by these results, we revisit the conventional BV approach and construct a BV master action based on the minimal set of string fields-antifields.
description: 24 + 4 pages; Published ver
Bimodules over ${\rm VN}(G)$, harmonic operators and the non-commutative Poisson boundary
Creators: name: Anoussis, Mihalis
name: Katavolos, Aristides
name: Todorov, Ivan G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 43A20, 22D15, 43A77, 47L05

description: Starting with a left ideal $J$ of $L^1(G)$ we consider its annihilator $J^{\perp}$ in $L^{\infty}(G)$ and the generated ${\rm VN}(G)$-bimodule in $\mathcal{B}(L^2(G))$, ${\rm Bim}(J^{\perp})$. We prove that ${\rm Bim}(J^{\perp})=({\rm Ran} J)^{\perp}$ when $G$ is weakly amenable discrete, compact or abelian, where ${\rm Ran} J$ is a suitable saturation of $J$ in the trace class. We define jointly harmonic functions and jointly harmonic operators and show that, for these classes of groups, the space of jointly harmonic operators is the ${\rm VN}(G)$-bimodule generated by the space of jointly harmonic functions. Using this, we give a proof of the following result of Izumi and Jaworski - Neufang: the non-commutative Poisson boundary is isomorphic to the crossed product of the space of harmonic functions by $G$.
description: Section five revised. Some changes in Section eight as a result
Estimating stellar birth radii and the time evolution of the Milky Way's ISM metallicity gradient
Creators: name: Minchev, I.
name: Anders, F.
name: Recio-Blanco, A.
name: Chiappini, C.
name: de Laverny, P.
name: Queiroz, A.
name: Steinmetz, M.
name: Adibekyan, V.
name: Carrillo, I.
name: Cescutti, G.
name: Guiglion, G.
name: Hayden, M.
name: de Jong, R. S.
name: Kordopatis, G.
name: Majewski, S. R.
name: Martig, M.
name: Santiago, B. X.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a semi-empirical, largely model-independent approach for estimating Galactic birth radii, r_birth, for Milky Way disk stars. The technique relies on the justifiable assumption that a negative radial metallicity gradient in the interstellar medium (ISM) existed for most of the disk lifetime. Stars are projected back to their birth positions according to the observationally derived age and [Fe/H] with no kinematical information required. Applying our approach to the AMBRE:HARPS and HARPS-GTO local samples, we show that we can constrain the ISM metallicity evolution with Galactic radius and cosmic time, [Fe/H]_ISM(r, t), by requiring a physically meaningful r_birth distribution. We find that the data are consistent with an ISM radial metallicity gradient that flattens with time from ~-0.15 dex/kpc at the beginning of disk formation, to its measured present-day value (-0.07 dex/kpc). We present several chemo-kinematical relations in terms of mono-r_birth populations. One remarkable result is that the kinematically hottest stars would have been born locally or in the outer disk, consistent with thick disk formation from the nested flares of mono-age populations and predictions from cosmological simulations. This phenomenon can be also seen in the observed age-velocity dispersion relation, in that its upper boundary is dominated by stars born at larger radii. We also find that the flatness of the local age-metallicity relation (AMR) is the result of the superposition of the AMRs of mono-r_birth populations, each with a well-defined negative slope. The solar birth radius is estimated to be 7.3+-0.6 kpc, for a current Galactocentric radius of 8 kpc.
description: 14 p., 9 fig., Accepted for publication by MNRAS after minor revisions
Avalanche dynamics of radio pulsar glitches
Creators: name: Melatos, A.
name: Peralta, C.
name: Wyithe, J. S. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We test statistically the hypothesis that radio pulsar glitches result from an avalanche process, in which angular momentum is transferred erratically from the flywheel-like superfluid in the star to the slowly decelerating, solid crust via spatially connected chains of local, impulsive, threshold-activated events, so that the system fluctuates around a self-organised critical state. Analysis of the glitch population (currently 285 events from 101 pulsars) demonstrates that the size distribution in individual pulsars is consistent with being scale invariant, as expected for an avalanche process. The waiting-time distribution is consistent with being exponential in seven out of nine pulsars where it can be measured reliably, after adjusting for observational limits on the minimum waiting time, as for a constant-rate Poisson process. PSR J0537$-$6910 and PSR J0835$-$4510 are the exceptions; their waiting-time distributions show evidence of quasiperiodicity. In each object, stationarity requires that the rate $λ$ equals $- ε\dotν / $, where $\dotν$ is the angular acceleration of the crust, $$ is the mean glitch size, and $ε\dotν$ is the relative angular acceleration of the crust and superfluid. There is no evidence that $λ$ changes monotonically with spin-down age. The rate distribution itself is fitted reasonably well by an exponential for $λ\geq 0.25 {\rm yr^{-1}}$. For $λ< 0.25 {\rm yr^{-1}}$, its exact form is unknown; the exponential overestimates the number of glitching pulsars observed at low $λ$, where the limited total observation time exercises a selection bias.
description: Accepted for publication in the Astrophysical Journal
Online Learning Techniques for Improving Robot Navigation in Unfamiliar Domains
Creators: name: Sofman, Boris
Publisher: name: Carnegie Mellon University
Year: 2010
Subjects: subject: 80101 Adaptive Agents and Intelligent Robotics
subject: FOS: Computer and information sciences

description: Many mobile robot applications require robots to act safely and intelligently in complex unfamiliar
environments with little structure and limited or unavailable human supervision. As a
robot is forced to operate in an environment that it was not engineered or trained for, various aspects
of its performance will inevitably degrade. Roboticists equip robots with powerful sensors
and data sources to deal with uncertainty, only to discover that the robots are able to make only
minimal use of this data and still find themselves in trouble. Similarly, roboticists develop and
train their robots in representative areas, only to discover that they encounter new situations that
are not in their experience base. Small problems resulting in mildly sub-optimal performance are
often tolerable, but major failures resulting in vehicle loss or compromised human safety are not.
This thesis presents a series of online algorithms to enable a mobile robot to better deal with
uncertainty in unfamiliar domains in order to improve its navigational abilities, better utilize
available data and resources and reduce risk to the vehicle. We validate these algorithms through
extensive testing onboard large mobile robot systems and argue how such approaches can increase
the reliability and robustness of mobile robots, bringing them closer to the capabilities
required for many real-world applications.
[Puchita: Estoy bien. Te mando este poema a ver qué te parece.]
Creators: name: Manuel, Vázquez Portal
name: Vázquez Portal, Manuel
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2023
Subjects: Prison de Boniato
Poésie

description: Destinataire : Huerga Cedeño, Yolanda
description: Description : Lettre de Vázquez Portal à son épouse. La lettre est accompagnée d'un poème, en 5 parties, sur lequel l'auteur donne quelques détails et lui demande son avis. Ce dernier est intitulé : 'Lomaciega'.
description: Notes : Lettre envoyée depuis la Prison de Boniato.
description: Source: Cote : MVP-B-2004-03-31
description: Source: Localisation du document : États-Unis, Miami (Floride)
Additional file 6 of Cocktail biosynthesis of triacylglycerol by rational modulation of diacylglycerol acyltransferases in industrial oleaginous Aurantiochytrium
Creators: name: Lan, Chuanzeng
name: Wang, Sen
name: Zhang, Huidan
name: Wang, Zhuojun
name: Wan, Weijian
name: Liu, Huan
name: Hu, Yang
name: Cui, Qiu
name: Song, Xiaojin
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Plant Biology

description: Additional file 6: Fig. S6. Analysis of lipids from H1246 and its transformants. (A) Schematic representation of the mutant strains construction. (B) TLC analysis of lipids from H1246 and its transformants that were cultivated without fatty acid-fed. (C) TLC analysis of lipids from H1246 and its transformants that were cultivated under DHA-fed condition. Line 1, H1246 expressing yeast DGA1 (DGAT2) gene; line 2, line 3, line 4 and line 5, mutant strain H1246 expressing DGAT2B, mDGAT2B-1, mDGAT2B-2 and mDGAT2B-3 gene, respectively.
Online Hierarchical Optimization for Humanoid Control
Creators: name: Siyuan  Feng
Publisher: name: Carnegie Mellon University
Year: 2016
Subjects: subject: 80101 Adaptive Agents and Intelligent Robotics
subject: FOS: Computer and information sciences

description: This thesis presents an online approach for controlling humanoid robots using hierarchical optimization. While our primary focus is to develop a fast and robust walking controller that is able to follow desired foot steps, full body manipulation capability is also achieved. The proposed hierarchical system consists of three levels: a high level trajectory optimizer that generates nominal center of mass and swing foot trajectories, together with useful information such as a local value function approximation and a linear policy along the nominal trajectory; a middle level receding-horizon controller that tracks the nominal plan and handles large disturbances by rapidly replanning for a short horizon; a low level controller that computes joint level commands by solving full body inverse dynamics and kinematics using quadratic programming. Using just the high level and the low level controller, we achieved rough terrain walking and close to human walking speed and stride length in simulation. Walking and manipulation controllers were also developed for the Atlas robot based on the same architecture, and performed reliably during the DARPA Robotics Challenge. The full hierarchy with the middle level controller is implemented afterwards, and dynamic walking with strong perturbations is successfully demonstrated on the Atlas robot.
1/N Expansion and Particle Spectrum in Induced QCD
Creators: name: Migdal, A. A.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the 1/N expansion in the recently proposed model of the lattice gauge theory induced by heavy scalar field in adjoint representation. In the first approximation the fluctuations of the density of eigenvalues of the scalar field are Gaussian, so that the scalar glueball spectrum is defined from the corresponding linear wave equation.
How can $X^{\pm}(5568)$ escape detection?
Creators: name: Ke, Hong-Wei
name: Li, Xue-Qian
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Multi-quark states were predicted by Gell-Mann when the quark model was first formulated. Recently, numerous exotic states that are considered to be multi-quark states have been experimentally confirmed (four-quark mesons and five-quark baryons). Theoretical research indicates that the four-quark state might comprise molecular and/or tetraquark structures. We consider that the meson containing four different flavors $su\bar b\bar d$ should exist and decay via the $X(5568)\to B_sπ$ channel. However, except for the D0 collaboration, all other experimental collaborations have reported negative observations for $X(5568)$ in this golden portal. This contradiction has stimulated the interest of both theorists and experimentalists. To address this discrepancy, we propose that the assumed $X(5568)$ is a mixture of a molecular state and tetraquark, which contributes destructively to $X(5568)\to B_sπ$. The cancellation may be accidental and it should be incomplete. In this scenario, there should be two physical states with the same flavor ingredients, with spectra of $5344\pm307$ and $6318\pm315$. $X(5568)$ lies in the error range of the first state. We predict the width of the second state (designated as $S_2$) as $Γ(X_{S_2}\to B_sπ)=224\pm97$ MeV. We strongly suggest searching for it in future experiments.
description: pages 4. Accepted by phys. lett. B
Burning graphs through farthest-first traversal
Creators: name: Díaz, Jesús García
name: Sansalvador, Julio César Pérez
name: Henríquez, Lil María Xibai Rodríguez
name: Acosta, José Alejandro Cornejo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences
subject: 05C85

description: The graph burning problem is an NP-hard combinatorial optimization problem that helps quantify the vulnerability of a graph to contagion. This paper introduces a simple farthest-first traversal-based approximation algorithm for this problem over general graphs. We refer to this proposal as the Burning Farthest-First (BFF) algorithm. BFF runs in $O(n^3)$ steps and has an approximation factor of $3-2/b(G)$, where $b(G)$ is the size of an optimal solution. Despite its simplicity, BFF tends to generate near-optimal solutions when tested over some benchmark datasets; in fact, it returns similar solutions to those returned by much more elaborated heuristics from the literature.
Transport properties in chaotic and non-chaotic many particles systems
Creators: name: Cecconi, Fabio
name: Cencini, Massimo
name: Vulpiani, Angelo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Two deterministic models for Brownian motion are investigated by means of numerical simulations and kinetic theory arguments. The first model consists of a heavy hard disk immersed in a rarefied gas of smaller and lighter hard disks acting as a thermal bath. The second is the same except for the shape of the particles, which is now square. The basic difference of these two systems lies in the interaction: hard core elastic collisions make the dynamics of the disks chaotic whereas that of squares is not. Remarkably, this difference is not reflected in the transport properties of the two systems: simulations show that the diffusion coefficients, velocity correlations and response functions of the heavy impurity are in agreement with kinetic theory for both the chaotic and the non-chaotic model. The relaxation to equilibrium, however, is very sensitive to the kind of interaction. These observations are used to reconsider and discuss some issues connected to chaos, statistical mechanics and diffusion.
description: 23 pgs with 8 Figures
Simulação Médica como Técnica de Ensino Universitário de Medicina: O Impacto na Satisfação e Confiança dos Alunos
Creators: name: Norte, Gustavo
Publisher: name: Revista da Sociedade Portuguesa de Anestesiologia
Year: 2024

description: Simulação Médica como Técnica de Ensino Universitário de Medicina: O Impacto na Satisfação e Confiança dos Alunos
description: Revista da Sociedade Portuguesa de Anestesiologia, Vol. 31 N.º 4 (2022): Suplemento 2 da Revista da Sociedade Portuguesa de Anestesiologia
Welfare Guarantees in Schelling Segregation
Creators: name: Bullinger, Martin
name: Suksompong, Warut
name: Voudouris, Alexandros A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Schelling's model is an influential model that reveals how individual perceptions and incentives can lead to residential segregation. Inspired by a recent stream of work, we study welfare guarantees and complexity in this model with respect to several welfare measures. First, we show that while maximizing the social welfare is NP-hard, computing an assignment of agents to the nodes of any topology graph with approximately half of the maximum welfare can be done in polynomial time. We then consider Pareto optimality, introduce two new optimality notions based on it, and establish mostly tight bounds on the worst-case welfare loss for assignments satisfying these notions as well as the complexity of computing such assignments. In addition, we show that for tree topologies, it is possible to decide whether there exists an assignment that gives every agent a positive utility in polynomial time; moreover, when every node in the topology has degree at least $2$, such an assignment always exists and can be found efficiently.
description: Appears in the 35th AAAI Conference on Artificial Intelligence (AAAI), 2021
Large fluctuations of the KPZ equation in a half-space
Creators: name: Krajenbrink, Alexandre
name: Doussal, Pierre Le
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We investigate the short-time regime of the KPZ equation in $1+1$ dimensions and develop a unifying method to obtain the height distribution in this regime, valid whenever an exact solution exists in the form of a Fredholm Pfaffian or determinant. These include the droplet and stationary initial conditions in full space, previously obtained by a different method. The novel results concern the droplet initial condition in a half space for several Neumann boundary conditions: hard wall, symmetric, and critical. In all cases, the height probability distribution takes the large deviation form $P(H,t) \sim \exp( - Φ(H)/\sqrt{t})$ for small time. We obtain the rate function $Φ(H)$ analytically for the above cases. It has a Gaussian form in the center with asymmetric tails, $|H|^{5/2}$ on the negative side, and $H^{3/2}$ on the positive side. The amplitude of the left tail for the half-space is found to be half the one of the full space. As in the full space case, we find that these left tails remain valid at all times. In addition, we present here (i) a new Fredholm Pfaffian formula for the solution of the hard wall boundary condition and (ii) two Fredholm determinant representations for the solutions of the hard wall and the symmetric boundary respectively.
description: Submission to SciPost, comments of the referee included in this new version