cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Openness: Grundwert oder Ideologie?
Creators: name: Schiller, Anna Lena
Publisher: name: Universität Hamburg
Year: 2019
Subjects: Open Science, Offenheit, Openness, Digitalisierung, Wissenschaft, Museen, Hamburg

description: Das Poster ist das Ergebnis der grafischen Dokumentation (Graphic Recording) der Eröffnungsveranstaltung der Ringvorlesung "Offenheit in der Wissenschaft. Open Science in der Praxis" am 14.10.2019 im Rahmen des allgemeinen Vorlesungswesens der Universität Hamburg. Referentinnen und Podiumsteilnehmerinnen waren Joanna Schmölz (Digitalstrategie, Senatskanzlei Hamburg) und Yvonne Zindel (Research Associate, Universität der Künste Berlin). Begrüßung: Stefan Thiemann (Universität Hamburg), Moderation: Andreas Möllenkamp (Universität Hamburg). Ringvorlesung "Offenheit in der Wissenschaft. Open Science in der Praxis" Die Open Science-Bewegung will die Potentiale der Digitalisierung nutzen, um die wissenschaftliche Arbeit und ihre Ergebnisse sowohl innerhalb der Wissenschaft als auch für Wirtschaft, Kultur und Gesellschaft einfacher zugänglich und nutzbar zu machen. Was bedeutet das für die wissenschaftliche Praxis?
 In dieser Ringvorlesung werden durch Impulsvorträge mit anschließender Diskussion Praxisbeispiele offener Wissenschaft vorgestellt und diskutiert. Expertinnen und Experten aus unterschiedlichen Fachbereichen beleuchten die rechtlichen, politischen und technischen Rahmenbedingungen und diskutieren Methoden und Erfahrungen mit offener Wissenschaft. Dazu gehören Fragen des freien Zugangs zu Publikationen (Open Access) ebenso wie zur Erhebung, Bereitstellung und Verbreitung von Forschungsdaten und Methoden. Eröffnungsveranstaltung "Openness: Grundwert oder Ideologie?" Mit der Öffnung der Wissenschaft sind weitgehende Erwartungen und Hoffnungen, aber auch Herausforderungen und Ängste verbunden. Versprechungen von einfacherer Zugänglichkeit, größerer Transparenz und besserer Nachnutzbarkeit stehen etwa einer Kritik an einer zunehmenden Quantifizierung und Ökonomisierung gegenüber. Gemeinsam mit den Referentinnen gehen wir der Frage nach, wie Wissenschaft, Kunst und Kultur die Chancen der Digitalisierung für eine nachhaltige, gemeinwohlorientierte Entwicklung nutzen können. Programm der Ringvorlesung Video-Mitschnitt der Eröffnungsveranstaltung
Product set growth in groups and hyperbolic geometry
Creators: name: Delzant, Thomas
name: Steenbock, Markus
Publisher: name: arXiv
Year: 2018
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F65, 20F67, 20E08, 20F70

description: Generalising results of Razborov and Safin, and answering a question of Button, we prove that for every hyperbolic group there exists a constant $α>0$ such that for every finite subset $U$ that is not contained in a virtually cyclic subgroup $|U^n|\geqslant (α|U|)^{[(n+1)/2]}$. Similar estimates are established for groups acting acylindrically on trees or hyperbolic spaces.
description: 38 pages, accepted for publication by the Journal of Topology
Trends in digital methods in the Humanities and Social Sciences in Greece
Creators: name: Ilvanidou, Maria
name: Pouli, Kanella
name: Souyioultzoglou, Irakleitos
name: Tzedopoulos, Yorgos
Publisher: name: Zenodo
Year: 2023

description: The Greek Infrastructure for Digital Arts, Humanities and Language Research and Innovation "APOLLONIS" has the mission to create and operate an environment of resources, services, tools, training and support, which enables integrated access and exploitation of collections of digital resources and services.

This research was conducted in the context of the project “The emerging landscape of digital work practices in the Humanities in the context of the European projects DARIAH and CLARIN”, implemented by the Infrastructure's supporting organisations, namely ATHENA Research Center and Academy of Athens. The research documents the current trends in digital research practices in the Humanities and Social Sciences (SSH), as well as the changes brought about by the pandemic in the implementation of digitally oriented workflows and the use of applications; in addition, it captures the needs of the research community regarding the availability of digital resources and services.

The data presented in the individual sections of the paper are derived from the analysis of responses to an online survey conducted between October 2022 and January 2023, as well as from the findings of six focus group meetings of equal numbers of SSH research communities. Some key conclusions drawn from the survey:

Confirmation of the shortages in available digital content underscores the imperative to enhance access to data by expanding the digital repository and fostering a culture of sharing.

Confirmation of the limited utilization of standards and digital tools, alongside the fragmented implementation of standardized digital workflows.

Identification of the need for training and ongoing education regarding new digital tools and methodologies.

Recognition of the pandemic's role in accelerating the digital transformation of research, resulting in a positive shift in the utilization of digital tools and methods, as well as the community's attitude towards them.

These findings, which shed light on the current needs and requirements of the SSH community while also highlighting certain deficiencies, advocate for the further development of research infrastructure and the formulation of a comprehensive strategy to support research practices in the digital realm. Based on the above, areas of focus are recommended for the continued enhancement of the DARIAH-GR and CLARIN:EL infrastructures.
First-principles study of electron transport in few-electron open quantum dots by the Hartree-Fock approach
Creators: name: Ihnatsenka, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electron transport properties of few-electron open quantum dots within the spin-restricted Hartree-Fock approximation are studied. The self-consistent numerical calculations were performed for a whole device, including the semi-infinite leads, without employing any phenomenological or adjustable parameters. Inclusion of the non-local Fock potential brings qualitatively new physics in comparison to the Hartree approach: electron screening decreases, resonant energy levels become less pinned to the Fermi energy and clearly correlate with conductance peaks. When coupling between the dot and leads decreases the number of electrons inside the dot becomes quantized and the model predicts the Coulomb blockade of electron transport. This is confirmed by comparison with the master equation approach for an equivalent quantum dot.
description: v2 with several improvements
Weak units, universal cells, and coherence via universality for bicategories
Creators: name: Hadzihasanovic, Amar
Publisher: name: arXiv
Year: 2018
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18D05

description: Poly-bicategories generalise planar polycategories in the same way as bicategories generalise monoidal categories. In a poly-bicategory, the existence of enough 2-cells satisfying certain universal properties (representability) induces coherent algebraic structure on the 2-graph of single-input, single-output 2-cells. A special case of this theory was used by Hermida to produce a proof of strictification for bicategories. No full strictification is possible for higher-dimensional categories, seemingly due to problems with 2-cells that have degenerate boundaries; it was conjectured by C. Simpson that semi-strictification excluding units may be possible. We study poly-bicategories where 2-cells with degenerate boundaries are barred, and show that we can recover the structure of a bicategory through a different construction of weak units. We prove that the existence of these units is equivalent to the existence of 1-cells satisfying lower-dimensional universal properties, and study the relation between preservation of units and universal cells. Then, we introduce merge-bicategories, a variant of poly-bicategories with more composition operations, which admits a natural monoidal closed structure, giving access to higher morphisms. We derive equivalences between morphisms, transformations, and modifications of representable merge-bicategories and the corresponding notions for bicategories. Finally, we prove a semi-strictification theorem for representable merge-bicategories with a choice of composites and units.
description: 82 pages. v2: revised following round of review; changed terminology (divisible->universal). v3: minor changes, published version
Seshadri stratifications and Schubert varieties: a geometric construction of a standard monomial theory
Creators: name: Chirivì, Rocco
name: Fang, Xin
name: Littelmann, Peter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: A standard monomial theory for Schubert varieties is constructed exploiting (1) the geometry of the Seshadri stratifications of Schubert varieties by their Schubert subvarieties and (2) the combinatorial LS-path character formula for Demazure modules. The general theory of Seshadri stratifications is improved by using arbitrary linearization of the partial order and by weakening the definition of balanced stratification.
Structured statistical models of inductive reasoning.
Creators: name: Kemp, Charles
name: Tenenbaum, Joshua B.
Publisher: name: Carnegie Mellon University
Year: 2009
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Everyday inductive inferences are often guided by rich background knowledge. Formal models of induction should aim to incorporate this knowledge and should explain how different kinds of knowledge lead to the distinctive patterns of reasoning found in different inductive contexts. This article presents a Bayesian framework that attempts to meet both goals and describes [corrected] 4 applications of the framework: a taxonomic model, a spatial model, a threshold model, and a causal model. Each model makes probabilistic inferences about the extensions of novel properties, but the priors for the 4 models are defined over different kinds of structures that capture different relationships between the categories in a domain. The framework therefore shows how statistical inference can operate over structured background knowledge, and the authors argue that this interaction between structure and statistics is critical for explaining the power and flexibility of human reasoning.
Structural properties of disk galaxies I. The intrinsic ellipticity of bulges
Creators: name: Mendez-Abreu, J.
name: Aguerri, J. A. L.
name: Corsini, E. M.
name: Simonneau, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) A variety of formation scenarios was proposed to explain the diversity of properties observed in bulges. Studying their intrinsic shape can help in constraining the dominant mechanism at the epochs of their assembly. The structural parameters of a magnitude-limited sample of 148 unbarred S0--Sb galaxies were derived in order to study the correlations between bulges and disks as well as the probability distribution function (PDF) of the intrinsic equatorial ellipticity of bulges. It is presented a new fitting algorithm (GASP2D) to perform the two-dimensional photometric decomposition of galaxy surface-brightness distribution. This was assumed to be the sum of the contribution of a bulge and disk component characterized by elliptical and concentric isophotes with constant (but possibly different) ellipticity and position angles. Bulge and disk parameters of the sample galaxies were derived from the J-band images which were available in the Two Micron All Sky Survey. The PDF of the equatorial ellipticity of the bulges was derived from the distribution of the observed ellipticities of bulges and misalignments between bulges and disks. Strong correlations between the bulge and disk parameters were found. About 80% of bulges in unbarred lenticular and early-to-intermediate spiral galaxies are not oblate but triaxial ellipsoids. Their mean axial ratio in the equatorial plane is  = 0.85. There is not significant dependence of their PDF on morphology, light concentration, and luminosity. The interplay between bulge and disk parameters favors scenarios in which bulges assembled from mergers and/or grew over long times through disk secular evolution. But all these mechanisms have to be tested against the derived distribution of bulge intrinsic ellipticities.
description: 24 pages, 13 figures, accepted for publication in A&A, corrected proofs
Benchmarking acid and base dopants with respect to enabling the ice V to XIII and ice VI to XV hydrogen-ordering phase transitions
Creators: name: Rosu-Finsen, Alexander
name: Salzmann, Christoph G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Doping the hydrogen-disordered phases of ice V, VI and XII with hydrochloric acid (HCl) has led to the discovery of their hydrogen-ordered counterparts ices XIII, XV and XIV. Yet, the mechanistic details of the hydrogen-ordering phase transitions are still not fully understood. This includes in particular the role of the acid dopant and the defect dynamics that it creates within the ices. Here we investigate the effects of several acid and base dopants on the hydrogen ordering of ices V and VI with calorimetry and X-ray diffraction. HCl is found to be most effective for both phases which is attributed to a favourable combination of high solubility and strong acid properties which create mobile H3O+ defects that enable the hydrogen-ordering processes. Hydrofluoric acid (HF) is the second most effective dopant highlighting that the acid strengths of HCl and HF are much more similar in ice than they are in liquid water. Surprisingly, hydrobromic acid doping facilitates hydrogen ordering in ice VI whereas only a very small effect is observed for ice V. Conversely, lithium hydroxide (LiOH) doping achieves a performance comparable to HF-doping in ice V but it is ineffective in the case of ice VI. Sodium hydroxide, potassium hydroxide (as previously shown) and perchloric acid doping are ineffective for both phases. These findings highlight the need for future computational studies but also raise the question why LiOH-doping achieves hydrogen-ordering of ice V whereas potassium hydroxide doping is most effective for the 'ordinary' ice Ih.
description: 18 pages, 7 figures, 1 table
Systematic derivation of realistic spin-models for beyond-Heisenberg solids
Creators: name: Hoffmann, Markus
name: Blügel, Stefan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a systematic derivation of effective lattice spin Hamiltonians derived from a rotationally invariant multi-orbital Hubbard model including a term ensuring Hund's rule coupling. The Hamiltonians are derived down-folding the fermionic degrees of freedom of the Hubbard model into the proper low-energy spin sector using Löwdin partitioning, which will be outlined in detail for the case of two sites and two orbitals at each site. Correcting the ground state systematically up to fourth order in the hopping of electrons, we find for spin $S\geq 1$ a biquadratic, three-spin and four-spin interaction beyond the conventional Heisenberg term. Comparing the puzzling energy spectrum of the magnetic states for a single Fe monolayer on Ru(0001), obtained from density functional theory, with the spin Hamiltonians taken at the limit of classical spins, we show that the previously ignored three-spin interaction can be comparable in size to the conventional Heisenberg exchange.
Production of medicinal plants in agroforestry systems (PA)
Creators: name: Mosquera-Losada MR
name: Ferreiro-Domínguez N
name: Rodríguez-Rigueiro FJ
name: Santiago-Freijanes JJ
name: Arias-Martínez D
name: Rigueiro-Rodríguez A
Publisher: name: Zenodo
Year: 2019
Subjects: aromatic plants

description: The medicinal and aromatic plants (MAPs) are a resource highly demanded at present, since to the typical uses of the medicinal and aromatic plants (in pharmacy, herbal medicine, condiments, perfumery, alcoholic beverages) were expanded between end of 1990 and early 2000 to new ones that increasingly have a greater weight in the global estimation of the use of this type of goods. This is the case of dermocosmetics, in which plant extracts appear more frequently, or the development and commercialization of beverages and functional foods that contain bioactive compounds from medicinal plants. In addition, in recent years the demand for natural products for the care of domestic animals has been intensified. Only in the United States the market volume of this type of products was one billion dollars in 2002. The figures that are reflected in the bibliography on both the total volume of plants that move in the PAM market and the money that generates this type of products worldwide are very high. The global average of imports each year exceeds 400,000 tons of medicinal and aromatic plants.
Structured models of semantic cognition
Creators: name: Kemp, Charles
name: Tenenbaum, Joshua B.
Publisher: name: Carnegie Mellon University
Year: 2008
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Rogers & McClelland (R&M) criticize models that rely on structured representations such as categories, taxonomic hierarchies, and schemata, but we suggest that structured models can account for many of the phenomena that they describe. Structured approaches and parallel distributed processing (PDP) approaches operate at different levels of analysis, and may ultimately be compatible, but structured models seem more likely to offer immediate insight into many of the issues that R&M discuss.
Chemically Treated Malaria Parasites as a Multimodal System for Vaccine Development
Creators: name: De, Sai Lata
Publisher: name: Griffith University
Year: 2016
Subjects: Malaria parasites
Vaccine development
Malaria vaccine research

description: Current measures to control malaria are becoming unreliable due to the emergence of parasite and vector resistance. Therefore, development of a safe and effective vaccine is essential for the eventual eradication of malaria. Challenges that have hindered malaria vaccine research include antigenic polymorphism, reproducing correlates of protection from preclinical to clinical studies and the paucity of challenge models to test vaccine efficacy. Altering the virulence of the whole parasite using genetic manipulation, irradiation or chemical treatment has been used as an alternative vaccine strategy to address these challenges. A whole parasite vaccine should elicit a potent, protective immune response and overcome the limited efficacy observed in leading subunit vaccine candidates, such as RTS,S. Previous publications from our laboratory have demonstrated that chemically attenuated blood-stage parasites persist in the blood at sub-patent levels. In the P. chabaudi rodent model, CD4+ T cells mediated protection upon homologous and heterologous challenge in an antibody-independent manner. However, in the P. yoelii model, protection was mediated in a cell- and antibody-dependent manner. Prior to testing this approach in humans, a pilot study was done in non-splenectomised Aotus nancymaae monkeys to investigate the persistence and immunogenicity of a single dose of chemically attenuated ring-stage P. falciparum FVO parasites (CAPs). These CAPs induced proliferation of parasite-specific T cells; however, no parasite-specific IgG was detected. These experiments lay the groundwork for assessment of CAPs in humans as a potential vaccine against malaria.
Projective bases of division algebras and groups of central type II
Creators: name: Natapov, Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: Rings and Algebras (math.RA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20C05, 16S35

description: Let G be a finite group and let k be a field. We say that G is a projective basis of a k-algebra A if it is isomorphic to a twisted group algebra k^αG for some class αin H^2(G,k^\times), where the action of G on k^\times is trivial. In a preceding paper by Aljadeff, Haile and the author (Projective bases of division algebras and groups of central type, Israel J. Math. 146 (2005) 317-335) it was shown that if a group G is a projective basis in a k-central division algebra then G is nilpotent and every Sylow-p subgroup of G is on the short list of families of p-groups, denoted by Λ. In this paper we complete the classification of projective bases of division algebras by showing that every group on that list is a projective basis for a suitable division algebra. We also consider the question of uniqueness of a projective basis of a k-central division algebra. We show that basically all groups on the list Λbut one satisfy certain rigidity property.
description: 12 pages, LaTex file
A Radio Frequency Non-reciprocal Network Based on Switched Low-loss Acoustic Delay Lines
Creators: name: Lu, Ruochen
name: Manzaneque, Tomas
name: Yang, Yansong
name: Gao, Anming
name: Gao, Liuqing
name: Gong, Songbin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This work demonstrates the first non-reciprocal network based on switched low-loss acoustic delay lines. A 21 dB non-reciprocal contrast between insertion loss (IL=6.7 dB) and isolation (28.3 dB) has been achieved over a fractional bandwidth of 8.8% at a center frequency 155MHz, using a record low switching frequency of 877.22 kHz. The 4-port circulator is built upon a newly reported framework by the authors, but using two in-house fabricated low-loss, wide-band lithium niobate (LiNbO3) delay lines with single-phase unidirectional transducers (SPUDT) and commercial available switches. Such a system can potentially lead to future wide-band, low-loss chip-scale nonreciprocal RF systems with unprecedented programmability.
description: 4 pages, 7 figures
Poisson noise induced switching in driven micromechanical resonators
Creators: name: Zou, Jie
name: Buvaev, Sanal
name: Dykman, Mark
name: Chan, Ho Bun
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study Poisson-noise induced switching between coexisting vibrational states in driven nonlinear micromechanical resonators. In contrast to Gaussian noise induced switching, the measured logarithm of the switching rate is proportional not to the reciprocal noise intensity, but to its logarithm, for fixed pulse area. We also find that the switching rate logarithm varies as a square root of the distance to the bifurcation point, instead of the conventional scaling with exponent 3/2.
description: accepted by PRB
Structural similarity and spatiotemporal noise effects on learning dynamic novel objects
Creators: name: Q C Vuong
name: M J Tarr
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: The spatiotemporal pattern projected by a moving object is specific to that object, as it depends on both the shape and the dynamics of the object. Previous research has shown that observers learn to make use of this spatiotemporal Signature to recognize dynamic faces and objects. In two experiments, we assessed the extent to which the structural similarity of the objects and the presence of spatiotemporal noise affect how these signatures are learned and subsequently used in recognition. Observers First learned to identify novel, structurally distinctive or structurally similar objects that rotated with a particular motion. At test, each learned object moved with its studied motion or with a non-studied motion. In the non-studied motion condition we manipulated either dynamic information alone (experiment 1) or both static and dynamic information (experiment 2). Across both experiments we found that changing the learned motion of an object impaired recognition performance when 3-D shape was similar or when the visual input was noisy during learning. These results are consistent with the hypothesis that observers use learned spatiotemporal Signatures and that such information becomes progressively more important as shape information becomes less reliable.
title: ADCO, Grènetier de Cîteaux : comptes (1499-1503) (11 H 1173), f. 00201
Creators: name: de la Côte-d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: comptes
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Grènetier de Cîteaux : comptes (1499-1503), Archives départementales de la Côte-d'Or, (11 H 1173). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Grènetier de Cîteaux : comptes (1499-1503), Archives départementales de la Côte-d'Or, (11 H 1173), f. 00201, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
MPEC 2024-N58 : 2019 GU184
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Analog simulator of integro-differential equations with classical memristors
Creators: name: Barrios, G. Alvarado
name: Retamal, J. C.
name: Solano, E.
name: Sanz, M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Emerging Technologies (cs.ET)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: An analog computer makes use of continuously changeable quantities of a system, such as its electrical, mechanical, or hydraulic properties, to solve a given problem. While these devices are usually computationally more powerful than their digital counterparts, they suffer from analog noise which does not allow for error control. We will focus on analog computers based on active electrical networks comprised of resistors, capacitors, and operational amplifiers which are capable of simulating any linear ordinary differential equation. However, the class of nonlinear dynamics they can solve is limited. In this work, by adding memristors to the electrical network, we show that the analog computer can simulate a large variety of linear and nonlinear integro-differential equations by carefully choosing the conductance and the dynamics of the memristor state variable. To the best of our knowledge, this is the first time that circuits based on memristors are proposed for simulations. We study the performance of these analog computers by simulating integro-differential models related to fluid dynamics, nonlinear Volterra equations for population growth, and quantum models describing non-Markovian memory effects, among others. Finally, we perform stability tests by considering imperfect analog components, obtaining robust solutions with up to $13\%$ relative error for relevant timescales.
On the effective action of D-brane-anti-D-brane system
Creators: name: Garousi, Mohammad R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine the proposal for constructing the effective action of a D-brane-anti-D-brane system from the non-abelian extension of tachyon DBI action. We consider two prescriptions for the trace in the non-abelian tachyon DBI action. The usual trace and the symmetric trace prescription. The former gives an action for the D\bar{D} system which reduces to the action proposed by A.Sen for coincident branes. The latter gives a different action which is consistent with the S-matrix element calculations.
description: 10 pages, no figure, latex file, v2: typos corrected, a reference added, version published in JHEP
On the Mahler measure of $1+X+1/X+Y+1/Y$
Creators: name: Rogers, Mathew
name: Zudilin, Wadim
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 33C20, Secondary 11F03, 14H52, 19F27, 33C75, 33E05

description: We prove a conjectured formula relating the Mahler measure of the Laurent polynomial $1+X+X^{-1}+Y+Y^{-1}$, to the $L$-series of a conductor 15 elliptic curve.
description: 18 pages, Fixed typos in Lemmas 3 and 4
Informed Group-Sparse Representation for Singing Voice Separation
Creators: name: Chan, Tak-Shing T.
name: Yang, Yi-Hsuan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Information Retrieval (cs.IR)
subject: Sound (cs.SD)
subject: Signal Processing (eess.SP)
subject: Machine Learning (stat.ML)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Singing voice separation attempts to separate the vocal and instrumental parts of a music recording, which is a fundamental problem in music information retrieval. Recent work on singing voice separation has shown that the low-rank representation and informed separation approaches are both able to improve separation quality. However, low-rank optimizations are computationally inefficient due to the use of singular value decompositions. Therefore, in this paper, we propose a new linear-time algorithm called informed group-sparse representation, and use it to separate the vocals from music using pitch annotations as side information. Experimental results on the iKala dataset confirm the efficacy of our approach, suggesting that the music accompaniment follows a group-sparse structure given a pre-trained instrumental dictionary. We also show how our work can be easily extended to accommodate multiple dictionaries using the DSD100 dataset.
description: 5 pages, 1 figure
Active Brownian Motion in Two Dimensions
Creators: name: Basu, Urna
name: Majumdar, Satya N.
name: Rosso, Alberto
name: Schehr, Gregory
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the dynamics of a single active Brownian particle (ABP) in two spatial dimensions. The ABP has an intrinsic time scale $D_R^{-1}$ set by the rotational diffusion constant $D_R$. We show that, at short-times $t \ll D_R^{-1}$, the presence of `activness' results in a strongly anisotropic and non-diffusive dynamics in the $(xy)$ plane. We compute exactly the marginal distributions of the $x$ and $y$ position coordinates along with the radial distribution, which are all shown to be non-Brownian. In addition, we show that, at early times, the ABP has anomalous first-passage properties, characterized by non-Brownian exponents.
description: 11 pages, 4 figures, published version (typos corrected)
ESRC research data policy in changing landscapes
Creators: name: Allanson, Paul
name: Daly, Angela
name: Elahi, Awais
name: Geddes, Alistair
name: Malone, Maeve
name: Daeid, Niamh
name: Tetley-Brown, Lucille
Publisher: name: Zenodo
Year: 2024
Subjects: Building trust and transparency into research and curation techniques, costs, and workflows
Data Policy
Open Science
ESRC
Data Sharing
Re-use

description: Our talk outlines findings from research with stakeholders involved with ESRC-funded research data. We sought views on the design and implementation of the ESRC Data Policy (2018), based on experiences obtained from research data users, depositors, and managers, to determine how the ESRC ought respond to changes in legal and policy landscapes amid growing importance of new and emerging forms of data.
Universal quantum computing with parafermions assisted by a half fluxon
Creators: name: Dua, Arpit
name: Malomed, Boris
name: Cheng, Meng
name: Jiang, Liang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Braiding of anyons such as Majoranas or parafermions provides only Clifford gates which do not form a universal set of quantum gates. We propose a robust and resource-efficient scheme to perform a non-Clifford gate on a logical qudit encoded in parafermionic zero modes via the Aharonov-Casher effect. This gate can be implemented by moving a half flux quantum around the pair of parafermionic zero modes. The parafermion modes can be realized in a two-dimensional set-up using existing proposals and a half fluxon carrying half flux quantum can be created as a part of a half fluxon/anti-half fluxon pair in a spin-triplet Josephson junction with a dipole defect. With an appropriate bias current pulse, the half fluxon can be braided around the parafermions. Supplementing this gate with the braiding of parafermions provides the avenue for universal quantum computing with parafermions without magic state distillation.
description: 9+7 pages, 3+1 figures, longer version with appendix and more details
Eliminating spurious velocities in the free energy lattice Boltzmann method
Creators: name: Pooley, C. M.
name: Furtado, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Spurious velocities are unphysical currents that appear close to curved interfaces in diffuse interface methods. We analyse the causes of these spurious velocities in the free energy lattice Boltzmann algorithm. By making a suitable choice of the equilibrium distribution, and by finding the best way to numerically calculate derivatives, we show that these velocities may be decreased by an order of magnitude compared to previous models. Furthermore, we propose a momentum conserving forcing method that reduces spurious velocities by another factor of ~5. In three dimensions we find that 19 velocity vectors is the minimum number necessary.
description: 8 pages, 3 figures
Complex and Quaternionic Principal Component Pursuit and Its Application to Audio Separation
Creators: name: Chan, Tak-Shing T.
name: Yang, Yi-Hsuan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Signal Processing (eess.SP)
subject: Multimedia (cs.MM)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (stat.ML)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Recently, the principal component pursuit has received increasing attention in signal processing research ranging from source separation to video surveillance. So far, all existing formulations are real-valued and lack the concept of phase, which is inherent in inputs such as complex spectrograms or color images. Thus, in this letter, we extend principal component pursuit to the complex and quaternionic cases to account for the missing phase information. Specifically, we present both complex and quaternionic proximity operators for the $\ell_1$- and trace-norm regularizers. These operators can be used in conjunction with proximal minimization methods such as the inexact augmented Lagrange multiplier algorithm. The new algorithms are then applied to the singing voice separation problem, which aims to separate the singing voice from the instrumental accompaniment. Results on the iKala and MSD100 datasets confirmed the usefulness of phase information in principal component pursuit.
description: 5 pages, 1 figure
Regular and chaotic orbits in barred galaxies - I. Applying the SALI/GALI method to explore their distribution in several models
Creators: name: Manos, T.
name: Athanassoula, E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The distinction between chaotic and regular behavior of orbits in galactic models is an important issue and can help our understanding of galactic dynamical evolution. In this paper, we deal with this issue by applying the techniques of the Smaller (and Generalized) ALingment Indices, SALI (and GALI), to extensive samples of orbits obtained by integrating numerically the equations of motion in a barred galaxy potential. We estimate first the fraction of chaotic and regular orbits for the two-degree-of-freedom (DOF) case (where the galaxy extends only in the (x,y)-space) and show that it is a non-monotonic function of the energy. For the three DOF extension of this model (in the z-direction), we give similar estimates, both by exploring different sets of initial conditions and by varying the model parameters, like the mass, size and pattern speed of the bar. We find that regular motion is more abundant at small radial distances from the center of the galaxy, where the relative non-axisymmetric forcing is relatively weak, and at small distances from the equatorial plane, where trapping around the stable periodic orbits is important. We also find that the variation of the bar pattern speed, within a realistic range of values, does not affect much the phase space's fraction of regular and chaotic motions. Using different sets of initial conditions, we show that chaotic motion is dominant in galaxy models whose bar component is more massive, while models with a fatter or thicker bar present generally more regular behavior. Finally, we find that the fraction of orbits that are chaotic correlates strongly with the bar strength.
description: 16 pages, 10 figures, MNRAS, in press
Cryptanalysis of a computer cryptography scheme based on a filter bank
Creators: name: Arroyo, David
name: Li, Chengqing
name: Li, Shujun
name: Alvarez, Gonzalo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: This paper analyzes the security of a recently-proposed signal encryption scheme based on a filter bank. A very critical weakness of this new signal encryption procedure is exploited in order to successfully recover the associated secret key.
description: 6 pages, 1 figure
Intermittent emission of particles from a Bose-Einstein condensate in a one-dimensional lattice
Creators: name: Lai, L. Q.
name: Li, Z.
name: Liu, Q. H.
name: Yu, Y. B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate particle emission from a Bose-Einstein condensate with periodically modulated interactions in a one-dimensional lattice. Within perturbative analysis, which leads to instabilities for discrete modes, we obtain the main regimes where the system can emit a large particle jet, and find that the emission is distinctly intermittent rather than continuous. The time evolution of the trapped particles exhibits a stair-like decay, and a larger drive induces a more significant intermittency. We further shed light on the dynamics of the stimulating process, and demonstrate that instead of a real suspension, the intermittency represents a build-up stage of the system. The theoretical framework might be generalized to the explorations on multiple-site systems with analogous configurations and couplings, and offer new insights into other fundamental nonequilibrium problems.
description: 8 pages, 11 figures
Modeling collective behaviors: A moment-based approach
Creators: name: Zhang, Silun
name: Ringh, Axel
name: Hu, Xiaoming
name: Karlsson, Johan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In this work we introduce an approach for modeling and analyzing collective behavior of a group of agents using moments. We represent the group of agents via their distribution and derive a method to estimate the dynamics of the moments. We use this to predict the evolution of the distribution of agents by first computing the moment trajectories and then use this to reconstruct the distribution of the agents. In the latter an inverse problem is solved in order to reconstruct a nominal distribution and to recover the macro-scale properties of the group of agents. The proposed method is applicable for several types of multi-agent systems, e.g., leader-follower systems. We derive error bounds for the moment trajectories and describe how to take these error bounds into account for computing the moment dynamics. The convergence of the moment dynamics is also analyzed for cases with monomial moments. To illustrate the theory, two numerical examples are given. In the first we consider a multi-agent system with interactions and compare the proposed methods for several types of moments. In the second example we apply the framework to a leader-follower problem for modeling pedestrian crowd dynamics.
description: 15 pages, 13 figures
A universal ultraviolet-optical colour-colour-magnitude relation of galaxies
Creators: name: Chilingarian, Igor
name: Zolotukhin, Ivan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Although the optical colour-magnitude diagram of galaxies allows one to select red sequence objects, neither can it be used for galaxy classification without additional observational data such as spectra or high-resolution images, nor to identify blue galaxies at unknown redshifts. We show that adding the near ultraviolet colour to the optical CMD reveals a tight relation in the three-dimensional colour-colour-magnitude space smoothly continuing from the "blue cloud" to the "red sequence". We found that 98 per cent of 225,000 low-redshift (Z<0.27) galaxies follow a smooth surface g-r=F(M,NUV-r) with a standard deviation of 0.03-0.07 mag making it the tightest known galaxy photometric relation. There is a strong correlation between morphological types and integrated NUV-r colours. Rare galaxy classes such as E+A or tidally stripped systems become outliers that occupy distinct regions in the 3D parameter space. Using stellar population models for galaxies with different SFHs, we show that (a) the (NUV-r, g-r) distribution is formed by objects having constant and exponentially declining SFR with different characteristic timescales; (b) colour evolution for exponentially declining models goes along the relation suggesting its weak evolution up-to a redshift of 0.9; (c) galaxies with truncated SFHs have very short transition phase offset from the relation thus explaining the rareness of E+A galaxies. This relation can be used as a powerful galaxy classification tool when morphology remains unresolved. Its mathematical consequence is the photometric redshift estimates from 3 broad-band photometric points. This approach works better than most existing photometric redshift techniques applied to multi-colour datasets. Therefore, the relation can be used as an efficient selection technique for galaxies at intermediate redshifts (0.3
description: 15 pages, 10 figures, accepted to MNRAS. This is an updated version that addresses referee's remarks. All relations have been recomputed using Petrosian magnitudes. The best-fitting relations in the electronic form are available at the project web-page: http://specphot.sai.msu.ru/galaxies/
title: ADCO, Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Cart. 29 (G 134), 996 folios, f. 0213
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: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Archives départementales de la Côte-d'Or, Cart. 29 (G 134), 996 folios, f. 0213, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Septième cartulaire de Saint-Étienne de Dijon (1661-1665), Archives départementales de la Côte-d'Or, Cart. 29 (G 134), 996 folios, f. 0213, 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
Brief von Moritz Veit, Ruben Samuel Gumpertz und Jacob Herz Beer von Jüdische Gemeinde zu Berlin. Vorstand an Eduard Gans und Leopold Zunz, 25.10.1821
Creators: name: (:Unkn) Unknown
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1821
Subjects: subject: 090

description: Ablehnung der Bekanntgabe der Gründung der Unterrichtsanstalt des Vereins für Cultur und Wissenschaften der Juden in der Synagoge
Structural Imaging Reveals Anatomical Alterations in Inferotemporal Cortex in Congenital Prosopagnosia
Creators: name: Behrmann, Marlene
name: Avidan, Galia
name: Fuqiang  Gao
name: Black, Sandra
Publisher: name: Carnegie Mellon University
Year: 2007
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Congenital prosopagnosia (CP) refers to the lifelong impairment in face recognition in individuals who have intact low-level visual processing, normal cognitive abilities, and no known neurological disorder. Although the face recognition impairment is profound and debilitating, its neural basis remains elusive. To investigate this, we conducted detailed morphometric and volumetric analyses of the occipitotemporal (OT) cortex in a group of CP individuals and matched control subjects using high-spatial resolution magnetic resonance imaging. Although there were no significant group differences in the depth or deviation from the midline of the OT or collateral sulci, the CP individuals evince a larger anterior and posterior middle temporal gyrus and a significantly smaller anterior fusiform (aF) gyrus. Interestingly, this volumetric reduction in the aF gyrus is correlated with the behavioral decrement in face recognition. These findings implicate a specific cortical structure as the neural basis of CP and, in light of the familial history of CP, target the aF gyrus as a potential site for further, focused genetic investigation.