cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Non-equilibrium BN-ZnO: Optical properties and excitonic effects from first principles
Creators: name: Zhang, Xiao
name: Schleife, Andre
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The non-equilibrium boron nitride (BN) phase of zinc oxide (ZnO) has been reported for thin films and nanostructures, however, its properties are not well understood due to a persistent controversy that prevents reconciling experimental and first-principles results for its atomic coordinates. We use first-principles theoretical spectroscopy to accurately compute electronic and optical properties, including single-quasiparticle and excitonic effects: Band structures and densities of states are computed using density functional theory, hybrid functionals, and the $GW$ approximation. Accurate optical absorption spectra and exciton binding energies are computed by solving the Bethe-Salpeter equation for the optical polarization function. Using this data we show that the band-gap difference between BN-ZnO and wurtzite (WZ) ZnO agrees very well with experiment when the theoretical lattice geometry is used, but significantly disagrees for the experimental atomic coordinates. We also show that the optical anisotropy of BN-ZnO differs significantly from that of WZ-ZnO, allowing to optically distinguish both polymorphs. By using the transfer-matrix method to solve Maxwell's equations for thin films composed of both polymorphs, we illustrate that this opens up a promising route for tuning optical properties.
description: 13 pages, 11 figures, 6 tables
Researching the adoption of School Autonomy with Accountability reforms: A methodological note on country case studies
Creators: name: Fontdevila, Clara
Publisher: name: Zenodo
Year: 2019
Subjects: methodological approach
multiple streams framework
process tracing
education reform
comparative analysis

description: This note presents the methodological approach that guided the five case studies conducted in the context of REFORMED RS1. The case studies aimed at reconstructing and analysing the adoption of school autonomy with accountability (SAWA) arrangements in different countries, and were informed by shared data-gathering procedures and a common analytic strategy. This note gives a detailed description of the main data-collection and data-analysis tools on which the case studies relied, and makes explicit the rationale and the theoretical premises that oriented the design of such instruments. Particular attention is given to the development of the interview guide and to the coding strategy that informed the analysis of the interview data.
Mass transport in Fokker-Planck equations with tilted periodic potential
Creators: name: Herrmann, Michael
name: Niethammer, Barbara
Publisher: name: arXiv
Year: 2018
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider Fokker-Planck equations with tilted periodic potential in the subcritical regime and characterize the spatio-temporal dynamics of the partial masses in the limit of vanishing diffusion. Our convergence proof relies on suitably defined substitute masses and bounds the approximation error using the energy-dissipation relation of the underlying Wasserstein gradient structure. In the appendix we also discuss the case of an asymmetric double-well potential and derive the corresponding limit dynamics in an elementary way.
description: 23 pages, several figures
Bers and Hénon, Painlevé and Schroedinger
Creators: name: Cantat, Serge
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Algebraic Geometry (math.AG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We study the dynamics of mapping class groups on 2-dimensional character varieties. We shall show that the dynamics of pseudo-Anosov mapping classes resembles in many ways the dynamics of Hénon mappings, and then apply this idea to answer open questions concerning the geometry of discrete and faithful representations, Painlevé sixth equation, and discrete Schroedinger operators.
Speeding Up Gradient-Based Algorithms for Sequential Games
Creators: name: Gilpin, Andrew
name: Sandholm, Tuomas W
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: First-order (i.e., gradient-based) methods for solving two-person zero-sum sequential games of imperfect information have recently become important tools in the construction of game theory-based agents. The computation time per iteration is typically dominated by matrix-vector product operations involving the payoff matrix A. In this paper, we describe two techniques for scaling up this operation. The ﬁrst is a randomized sampling technique that approximates A with a sparser matrix ˜A. Then an approximate equilibrium for the original game is found by ﬁnding an approximate equilibrium of the sampled game. The second technique involves the development of an algorithm and system for performing the matrix-vector product on a cache-coherent Non-Uniform Memory Access (ccNUMA) architecture. The two techniques can be applied together or separately, and they each lead to an algorithm that signiﬁcantly outperforms the fastest prior gradient-based method.
On the optimality of individual entangling-probe attacks against BB84 quantum key distribution
Creators: name: Herbauts, I.
name: Bettelli, S.
name: Hübel, H.
name: Peev, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that an existing method to study ideal individual attacks on the BB84 QKD protocol using error discard can be adapted to reconciliation with error correction, and that an optimal attack can be explicitly found. Moreover, this attack fills Luetkenhaus bound, independently of whether error positions are leaked to Eve, proving that it is tight. In addition, we clarify why the existence of such optimal attacks is not in contradiction with the established ``old-style'' theory of BB84 individual attacks, as incorrectly suggested recently in a news feature.
description: 12 pages, 3 figures
Self-Similar Dynamics of a Relativistically Hot Gas
Creators: name: Lou, Yu-Qing
name: Cao, Yi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the presence of self-gravity, we investigate the self-similar dynamics of a relativistically hot gas with or without shocks in astrophysical processes of stellar core collapse, formation of compact objects, and supernova remnants with central voids. The model system is taken to be spherically symmetric and the conservation of specific entropy along streamlines is adopted for a relativistic hot gas. In terms of equation of state, this leads to a polytropic index $γ=4/3$. The conventional polytropic gas of $P=κρ^γ$, where $P$ is the thermal pressure, $ρ$ is the mass density, $γ$ is the polytropic index, and $κ$ is a global constant, is included in our theoretical model framework. Two qualitatively different solution classes arise according to the values of a simple power-law scaling index $a$, each of which is analyzed separately and systematically. We obtain new asymptotic solutions that exist only for $γ=4/3$. Global and asymptotic solutions in various limits as well as eigensolutions across sonic critical lines are derived analytically and numerically with or without shocks. By specific entropy conservation along streamlines, we extend the analysis of Goldreich & Weber for a distribution of variable specific entropy with time $t$ and radius $r$ and discuss consequences in the context of a homologous core collapse prior to supernovae. As an alternative rebound shock model, we construct an Einstein-de Sitter explosion with shock connections with various outer flows including a static outer part of a singular polytropic sphere (SPS). Under the joint action of thermal pressure and self-gravity, we can also construct self-similar solutions with central spherical voids with sharp density variations along their edges.
description: 21 pages, 15 figures, accepted for publication in MNRAS
Purification and redistribution of entanglement via single local filtering
Creators: name: Yashodamma, K. O.
name: Geetha, P. J.
name: Sudha
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The effect of filtering operation with respect to purification and concentration of entanglement in quantum states are discussed in this paper. It is shown, through examples, that the local action of the filtering operator on a part of the composite quantum state allows for purification of the remaining part of the state. The redistribution of entanglement in the subsystems of a noise affected state is shown to be due to the action of local filtering on the non-decohering part of the system. The varying effects of the filtering parameter, on the entanglement transfer between the subsystems, depending on the choice of the initial quantum state is illustrated.
description: 6 pages, 8 figures; Minor corrections done; Published version
Speech vs. Touch-tone: Telephony Interfaces for Information Access by Low Literate Users
Creators: name: Rosenfeld, Roni
name: Jahanzeb  Sherwani
name: Sooraj  Palijo
name: Sarwat  Mirza
name: Ahmed, Tanveer
name: Nosheen  Ali
Publisher: name: Carnegie Mellon University
Year: 1993
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Information access by low literate users is a hard problem. Critical information, such as in the field of healthcare, can often mean the difference between life and death. In our research, we have developed and tested various spoken language interface prototypes with low literate community health worker. In this paper, we present results from our research that show that well-designed speech interfaces are preferable to touch-tone equivalents. Additionally, we show that it is especially important to localize the system’s spoken language output for low literate users.
Addendum to the Corrigendum to: Lattice dynamics in the conformational environment of multilayered hexagonal boron nitride (h-BN) results in peculiar infrared optical responses
Creators: name: Cigarini, Luigi
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 510403
subject: Condensed matter modelling and density functional theory
classificationCode: 340699
subject: Physical chemistry not elsewhere classified
classificationCode: 340799
subject: Theoretical and computational chemistry not elsewhere classified

description: Clarification of the text in the previous Corrigendum.
Memory test from Perceiving and remembering speech depend on multifractal nonlinearity in movements producing and exploring speech
Creators: name: Bloomfield, Lauren
name: Lane, Elizabeth
name: Mangalam, Madhur
name: Kelty-Stephen, Damian G.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Biophysics
subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: 110601 Biomechanics
subject: FOS: Health sciences
subject: 60199 Biochemistry and Cell Biology not elsewhere classified
subject: 69999 Biological Sciences not elsewhere classified

description: Speech perception and memory for speech require active engagement. Gestural theories have emphasized mainly the effect of speaker's movements on speech perception. They fail to address the effects of listener movement, focusing on communication as a boundary condition constraining movement among interlocutors. The present work attempts to break new ground by using multifractal geometry of physical movement as a common currency for supporting both sides of the speaker–listener dyads. Participants self-paced their listening to a narrative, after which they completed a test of memory querying their narrative comprehension and the ability to recognize words from the story. The multifractal evidence of nonlinear interactions across timescales predicted the fluency of speech perception. Self-pacing movements that enabled listeners to control the presentation of speech sounds constituted a rich exploratory process. The multifractal nonlinearity of this exploration supported several aspects of memory for the perceived spoken language. These findings extend the role of multifractal geometry in the speaker's movements to the narrative case of speech perception. In addition to posing novel basic research questions, these findings make a compelling case for imbuing multifractal structure in text-to-speech synthesizers for better perception and memory of speech.
Semicircle law on short scales and delocalization of eigenvectors for Wigner random matrices
Creators: name: Erdős, László
name: Schlein, Benjamin
name: Yau, Horng-Tzer
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 15A52, 82B44 (Primary)

description: We consider $N\times N$ Hermitian random matrices with i.i.d. entries. The matrix is normalized so that the average spacing between consecutive eigenvalues is of order $1/N$. We study the connection between eigenvalue statistics on microscopic energy scales $η\ll1$ and (de)localization properties of the eigenvectors. Under suitable assumptions on the distribution of the single matrix elements, we first give an upper bound on the density of states on short energy scales of order $η\sim\log N/N$. We then prove that the density of states concentrates around the Wigner semicircle law on energy scales $η\gg N^{-2/3}$. We show that most eigenvectors are fully delocalized in the sense that their $\ell^p$-norms are comparable with $N^{{1}/{p}-{1}/{2}}$ for $p\ge2$, and we obtain the weaker bound $N^{{2}/{3}({1}/{p}-{1}/{2})}$ for all eigenvectors whose eigenvalues are separated away from the spectral edges. We also prove that, with a probability very close to one, no eigenvector can be localized. Finally, we give an optimal bound on the second moment of the Green function.
description: Published in at http://dx.doi.org/10.1214/08-AOP421 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Speech vs. Touch-tone: Telephony Interfaces for Information Access by Low Literate Users
Creators: name: Rosenfeld, Roni
name: Jahanzeb  Sherwani
name: Sherwani  Palijo
name: Sarwat  Mirza
name: Ahmed, Tanveer
name: Nosheen  Ali
Publisher: name: Carnegie Mellon University
Year: 1992
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Information access by low literate users is a hard problem. Critical information, such as in the field of healthcare,can often mean the difference between life and death. In our research, we have developed and tested various spoken language interface prototypes with low literate community health worker. In this paper, we present results from our research that show that well-designed speech interfaces are preferable to touch-tone equivalents. Additionally, we show that it is especially important to localize the system’s spoken language output for low literate users.
title: Commuters and community on Bell Island: an ethnography of ferry mobilities and social reproduction
Creators: name: Royal, Diane
Publisher: name: Memorial University of Newfoundland
publisherIdentifier: https://ror.org/04haebc03
publisherIdentifierScheme: ROR
Year: 2024

description: This thesis draws on ethnographic fieldwork with commuting workers residing on Bell Island—a ferry-reliant community located in the province of Newfoundland and Labrador. At the time of fieldwork in 2015, registered work commuters traveling daily from and to Bell Island comprised approximately one-fourth of the island’s population. The commute itself is multimodal, involving a five-kilometre ferry trip across a short stretch of ocean, as well as travel by road at either end of the ferry. This thesis was undertaken as part of a large team project called On the Move Partnership, researching employment-related geographical mobility in the Canadian context. In studying the work-related mobilities of Bell Island ferry commuters, this research engages with literature on social reproduction and considers individual, household, and community-level patterns of unpaid labour. This thesis used ethnographic fieldwork methods of participant observation, unstructured interviews, and semi-structured interviews with Bell Island residents. It analyses the ways commuters form ‘support networks’ with other ferry passengers, contribute meaningfully to their own households, as well as ‘help out’ across households and participate in island-wide volunteer work. As such, this research highlights the many ways in which Bell Island commuters support one another, reinforcing their island community and cementing a commitment to people and place amidst demanding off-island commuting practices. It is through these everyday activities of social reproduction that Bell Islanders are shaping and re-shaping their island community. By considering the unwaged labour patterns that are part of the daily work commute itself, this thesis ultimately asserts that commuting in the Bell Island context is also a form of work.
IPBES Invasive Alien Species Assessment: Chapter 6. Figure, table and caption
Creators: name: McGeoch, Melodie A.
name: Ordonez, Alejandro
name: Howard, Patricia L.
name: Groom, Quentin J.
name: Shrestha, Bharat B.
name: Fernandez Trigoso, Miguel
name: Brugnoli, Ernesto
name: Bwalya, Bridget
name: Byun, Chaeho
name: Ksenofontov, Stanislav
name: Ojaveer, Henn
name: Simberloff, Daniel
name: Mungi, Ninad A.
name: Rono, Betty J.
Publisher: name: Zenodo
Year: 2023
Subjects: IPBES
Assessment
Invasive alien species
Chapter 6
Figure
Table

description: Figures, tables and caption from Chapter 6: Governance and policy options for the prevention and control of biological invasions. In: Thematic Assessment Report on Invasive Alien Species and their Control of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services.
Creation of Localized Skyrmion Bubbles in Co/Pt Bilayers using a Spin Valve Nanopillar
Creators: name: Grab, Jennifer L.
name: Rugar, Alison E.
name: Ralph, Daniel C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We fabricate devices in which a magnetic nanopillar spin valve makes contact to a Co/Pt bilayer thin film with perpendicular magnetic anisotropy, in order to achieve local control of domains in the Co/Pt bilayer underneath the nanopillar. The goal is to develop the ability to nucleate, detect, and annihilate magnetic skyrmions in the Co/Pt using spin-polarized currents from the nanopillar. We demonstrate the ability to distinguish the local behavior of the Co/Pt film beneath the nanopillar from the extended film and show that the two can switch independently of each other. This allows us to isolate a localized domain under the pillar that can be controlled separately from the rest of the Co/Pt film using applied currents and magnetic fields. Micromagnetic simulations indicate that this localized domain has skyrmion symmetry. Our results represent a first step toward controlling room-temperature skyrmions using localized spin-transfer torque.
description: 22 pages, 10 figures
IPBES Invasive Alien Species Assessment: Chapter 6. Figure, table and caption
Creators: name: McGeoch, Melodie A.
name: Ordonez, Alejandro
name: Howard, Patricia L.
name: Groom, Quentin J.
name: Shrestha, Bharat B.
name: Fernandez Trigoso, Miguel
name: Brugnoli, Ernesto
name: Bwalya, Bridget
name: Byun, Chaeho
name: Ksenofontov, Stanislav
name: Ojaveer, Henn
name: Simberloff, Daniel
name: Mungi, Ninad A.
name: Rono, Betty J.
Publisher: name: Zenodo
Year: 2023
Subjects: IPBES
Assessment
Invasive alien species
Chapter 6
Figure
Table

description: Figures, tables and caption from Chapter 6: Governance and policy options for the prevention and control of biological invasions. In: Thematic Assessment Report on Invasive Alien Species and their Control of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services.
Key rate available from mismatched mesurements in the BB84 protocol and the uncertainty principle
Creators: name: Matsumoto, Ryutaroh
name: Watanabe, Shun
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the mismatched measurements in the BB84 quantum key distribution protocol, in which measuring bases are different from transmitting bases. We give a lower bound on the amount of a secret key that can be extracted from the mismatched measurements. Our lower bound shows that we can extract a secret key from the mismatched measurements with certain quantum channels, such as the channel over which the Hadamard matrix is applied to each qubit with high probability. Moreover, the entropic uncertainty principle implies that one cannot extract the secret key from both matched measurements and mismatched ones simultaneously, when we use the standard information reconciliation and privacy amplification procedure.
description: 5 pages, no figure, ieice.cls. Title was changed from version 1. To appear in IEICE Trans. Fundamentals (http://ietfec.oxfordjournals.org/), vol. E91-A, no. 10, Oct. 2008
Krein signatures of transfer operators for half-space topological insulators
Creators: name: Schulz-Baldes, Hermann
name: Villegas-Blas, Carlos
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We propose a complementary point of view on the topological invariants of two-dimensional tight-binding models restricted to half-spaces. The transfer operators for such systems are $J$-unitary on a infinite dimensional Krein space $(\mathcal{K},J)$ and, for energies in the bulk gap, only have discrete spectrum on the unit circle. These eigenvalues have Krein inertia which can be used to define topological invariants determining the nature of the surface modes and allowing to distinguish different topological phases. This is illustrated by numerical results.
description: Published Version
title: ADCO, Sixième cartulaire de Saint-Étienne de Dijon (1662), Cart. 30 (G 133), 441 folios, f. 120
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 120, 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. 120, 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
Electronic supplementary material from A multi-layer model for the early detection of COVID-19
Creators: name: Shmueli, Erez
name: Mansuri, Ronen
name: Porcilan, Matan
name: Amir, Tamar
name: Yosha, Lior
name: Yechezkel, Matan
name: Patalon, Tal
name: Handelman-Gotlib, Sharon
name: Gazit, Sivan
name: Yamin, Dan
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Electronic supplementary material is available as a separate PDF file.
Polaron Coherence Condensation as the Mechanism for Colossal Magnetoresistance in Layered Manganites
Creators: name: Mannella, N.
name: Yang, W. L.
name: Tanaka, K.
name: Zhou, X. J.
name: Zheng, H.
name: Mitchell, J. F.
name: Zaanen, J.
name: Devereaux, T. P.
name: Nagaosa, N.
name: Hussain, Z.
name: Shen, Z. -X.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Angle-resolved photoemission spectroscopy data for the bilayer manganite La1.2Sr1.8Mn2O7 show that, upon lowering the temperature below the Curie point, a coherent polaronic metallic groundstate emerges very rapidly with well defined quasiparticles which track remarkably well the electrical conductivity, consistent with macroscopic transport properties. Our data suggest that the mechanism leading to the insulator-to-metal transition in La1.2Sr1.8Mn2O7 can be regarded as a polaron coherence condensation process acting in concert with the Double Exchange interaction.
description: 4 pages, 3 figures, in press
Magnetoresistance and valley degree of freedom in bulk bismuth
Creators: name: Zhu, Zengwei
name: Fauqué, Benoît
name: Behnia, Kamran
name: Fuseya, Yuki
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper, we first review fundamental aspects of magnetoresistance in multi-valley systems based on the semiclassical theory. Then we will review experimental evidence and theoretical understanding of magnetoresistance in an archetypal multi-valley system, where the electric conductivity is set by the sum of the contributions of different valleys. Bulk bismuth has three valleys with an extremely anisotropic effective mass. As a consequence, the magnetoconductivity in each valley is extremely sensitive to the orientation of the magnetic field. Therefore, a rotating magnetic field plays the role of a valley valve tuning the contribution of each valley to the total conductivity. In addition to this simple semi-classical effect, other phenomena arise in the high-field limit as a consequence of an intricate Landau spectrum. In the vicinity of the quantum limit, the orientation of magnetic field significantly affects the distribution of carriers in each valley, namely, the valley polarization is induced by the magnetic field. Moreover, experiment has found that well beyond the quantum limit, one or two valleys become totally empty. This is the only case in condensed-matter physics where a Fermi sea is completely dried up by a magnetic field without a metal-insulator transition. There have been two long-standing problems on bismuth near the quantum limit: the large anisotropic Zeeman splitting of holes, and the extra peaks in quantum oscillations, which cannot be assigned to any known Landau levels. These problems are solved by taking into account the interband effect due to the spin-orbit couplings for the former, and the contributions from the twinned crystal for the latter. Up to here, the whole spectrum can be interpreted within the one-particle theory. Finally, we will discuss transport and thermodynamic signatures of breaking of the valley symmetry in this system.
description: A topic review for JPCM, 22 pages, 18 figures
Clifford quantum computer and the Mathieu groups
Creators: name: Planat, Michel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: One learned from Gottesman-Knill theorem that the Clifford model of quantum computing \cite{Clark07} may be generated from a few quantum gates, the Hadamard, Phase and Controlled-Z gates, and efficiently simulated on a classical computer. We employ the group theoretical package GAP\cite{GAP} for simulating the two qubit Clifford group $\mathcal{C}_2$. We already found that the symmetric group S(6), aka the automorphism group of the generalized quadrangle W(2), controls the geometry of the two-qubit Pauli graph \cite{Pauligraphs}. Now we find that the {\it inner} group ${Inn}(\mathcal{C}_2)=\mathcal{C}_2/{Center}(\mathcal{C}_2)$ exactly contains two normal subgroups, one isomorphic to $\mathcal{Z}_2^{\times 4}$ (of order 16), and the second isomorphic to the parent $A'(6)$ (of order 5760) of the alternating group A(6). The group $A'(6)$ stabilizes an {\it hexad} in the Steiner system $S(3,6,22)$ attached to the Mathieu group M(22). Both groups A(6) and $A'(6)$ have an {\it outer} automorphism group $\mathcal{Z}_2\times \mathcal{Z}_2$, a feature we associate to two-qubit quantum entanglement.
description: version for the journal Entropy
title: 01_1351
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: Laboratoire de Médiévistique Occidentale de Paris
subject: LaMOP

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/
Wave function of the Universe, Preferred reference frame effects and metric signature transition
Creators: name: Ghaffarnejad, Hossein
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational model of non-minimally coupled Brans Dicke (BD) scalar field $ϕ$ with dynamical unit time-like four vector field is used to study flat Robertson Walker (RW) cosmology in the presence of variable cosmological parameter $V(ϕ)=Λϕ.$ Aim of the paper is to seek cosmological models which exhibit metric signature transition. The problem is studied in both classical and quantum cosmological approach with large values of BD parameter $ω>>1$. Scale factor of RW metric is obtained as $R(t)=6\sqrt{\frac{3}Λ}\cosh\big(\frac{t}{4}\sqrt{\fracΛ{3}}\big)$ which describes nonsingular inflationary universe in Lorentzian signature sector. Euclidean signature sector of our solution describes a re-collapsing universe and is obtained from analytic continuation of the Lorentzian sector by exchanging $t\to it$ as $R(t)=6\sqrt{\frac{3}Λ}\cos\big(\frac{t}{4}\sqrt{\fracΛ{3}}\big).$ Dynamical vector field together with the BD scalar field are treated as fluid with time dependent barotropic index. They have regular (dark) matter dominance in the Euclidean (Lorentzian) sector. We solved Wheeler De Witt (WD) quantum wave equation of the cosmological system. Assuming a discrete non-zero ADM mass $M_j=4\sqrt{2}(2j+1)\sqrt{\fracΛ{3}}$ with $j=0,1,2,\cdots$, we obtained solutions of the WD equation as simple harmonic quantum Oscillator eigen functionals described by Hermite polynomials. Absolute values of these eigen functionals have nonzero values on the hypersurface $R=6\sqrt{\frac{3}Λ}$ in which metric field has signature degeneracy. Our eigen functionals describe nonzero probability of the space time with Lorentzian (Euclidean) signature for $R>6\sqrt{\frac{3}Λ}$ ($R<6\sqrt{\frac{3}Λ}$). Maximal probability corresponds to the ground state $j=0.$
description: 4 pages (in letter format), 2 figures, Accepted to present ORALY at `4th International Conference on Mathematical Modeling in Physical Sciences, June 5-8, 2015, Mykonos, Greece`http://www.icmsquare.net/ and will be appeared in the conference proceeding book
Base change for semiorthogonal decompositions
Creators: name: Kuznetsov, Alexander
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: Category Theory (math.CT)
subject: FOS: Mathematics

description: Consider an algebraic variety $X$ over a base scheme $S$ and a faithful base change $T \to S$. Given an admissible subcategory $\CA$ in the bounded derived category of coherent sheaves on $X$, we construct an admissible subcategory in the bounded derived category of coherent sheaves on the fiber product $X\times_S T$, called the base change of $\CA$, in such a way that the following base change theorem holds: if a semiorthogonal decomposition of the bounded derived category of $X$ is given then the base changes of its components form a semiorthogonal decomposition of the bounded derived category of the fiber product. As an intermediate step we construct a compatible system of semiorthogonal decompositions of the unbounded derived category of quasicoherent sheaves on $X$ and of the category of perfect complexes on $X$. As an application we prove that the projection functors of a semiorthogonal decomposition are kernel functors.
description: 24 pages; derived category of countably-coherent sheaves which appeared in the first version for technical reasons is replaced by the usual quasicoherent category
Some results on strongly operator convex functions and operator monotone functions
Creators: name: Brown, Lawrence G.
name: Uchiyama, Mitsuru
Publisher: name: arXiv
Year: 2017
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 47A63, Secondary 47A60, 15A39, 26A51

description: This paper concerns three classes of real-valued functions on intervals, operator monotone functions, operator convex functions, and strongly operator convex functions. Strongly operator convex functions were previously treated in [3] and [4], where operator algebraic semicontinuity theory or operator theory were substantially used. In this paper we provide an alternate treatment that uses only operator inequalities (or even just matrix inequalities). We also show that if t_0 is a point in the domain of a continuous function f, then f is operator monotone if and only if (f(t) - f(t_0))/(t - t_0) is strongly operator convex. Using this and previously known results, we provide some methods for constructing new functions in one of the three classes from old ones. We also include some discussion of completely monotone functions in this context and some results on the operator convexity or strong operator convexity of phi \circ f when f is operator convex or strongly operator convex.
description: contains results from arXiv:1706.02343
Gravity with Auxiliary Fields
Creators: name: Pani, Paolo
name: Sotiriou, Thomas P.
name: Vernieri, Daniele
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Modifications of General Relativity usually include extra dynamical degrees of freedom, which to date remain undetected. Here we explore the possibility of modifying Einstein's theory by adding solely nondynamical fields. With the minimal requirement that the theory satisfies the weak equivalence principle and admits a covariant Lagrangian formulation, we show that the field equations generically have to include higher-order derivatives of the matter fields. This has profound consequences for the viability of these theories. We develop a parametrization based on a derivative expansion and show that - to next to leading order - all theories are described by just two parameters. Our approach can be used to put stringent, theory-independent constraints on such theories, as we demonstrates using the Newtonian limit as an example.
description: 5 pages, no figures; v2: clarifications and minor improvements, matches published version
Evolution towards the critical limit and the origin of Be stars
Creators: name: Ekström, S.
name: Meynet, G.
name: Maeder, A.
name: Barblan, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We determine which are the mechanisms accelerating the surface of single stars during the Main Sequence evolution. We have computed 112 stellar models of four different initial masses between 3 and 60 M_sun, at four different metallicities between 0 and 0.020, and with seven different values of the ratio Omega/Omega_crit between 0.1 and 0.99. For all the models, computations were performed until either the end of the Main Sequence evolution or the reaching of the critical limit. The evolution of surface velocities during the Main Sequence lifetime results from an interplay between meridional circulation (bringing angular momentum to the surface) and mass loss by stellar winds (removing it). The dependence on metallicity of these two mechanisms plays a key role in determining for each metallicity, a limiting range of initial masses (spectral types) for stars able to reach or at least approach the critical limit. Present models predict a higher frequency of fast rotating stars in clusters with ages between 10 and 25 Myr. This is the range of ages where most of Be stars are observed.
description: 20 pages, 22 figures, accepted for publication in A&A
Speech Interface Guidelines
Creators: name: Rudnicky, Alexander
Publisher: name: Carnegie Mellon University
Year: 2007
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: This document provides an overview of speech interface design principles as applied to the range of applications that have been developed at Carnegie Mellon. For the most part these are workstation-based applications based on spoken language understanding technology. Nevertheless the guidelines should be applicable to a wider range of applications.
Modularity, Quaternion-Kahler spaces and Mirror Symmetry
Creators: name: Alexandrov, Sergei
name: Banerjee, Sibasish
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We provide an explicit twistorial construction of quaternion-Kahler manifolds obtained by deformation of c-map spaces and carrying an isometric action of the modular group SL(2,Z). The deformation is not assumed to preserve any continuous isometry and therefore this construction presents a general framework for describing NS5-brane instanton effects in string compactifications with N=2 supersymmetry. In this context the modular invariant parametrization of twistor lines found in this work yields the complete non-perturbative mirror map between type IIA and type IIB physical fields.
description: 28 pages; added some clarifications; corrected misprint in the S-duality constraint (4.8)
title: ADCO, Cartulaire de Cîteaux pour les possessions de Dijon et du Dijonnais (XVe siècle), Cart. 175 (11 H 479), 115 folios, f. 0114
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2017
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire de Cîteaux pour les possessions de Dijon et du Dijonnais (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 175 (11 H 479), 115 folios, f. 0114, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les possessions de Dijon et du Dijonnais (XVe siècle), Archives départementales de la Côte-d'Or, Cart. 175 (11 H 479), 115 folios, f. 0114, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
The Effect of Vertical Excitations on the Collapse Risk Assessment of RC Frame-Core Wall Structures
Creators: name: Tehranizadeh, Mohsen
name: Taslimi, Arsam
name: Shamlu, Mohammadreza
Publisher: name: figshare
Year: 2021
Subjects: subject: 90506 Structural Engineering
subject: FOS: Civil engineering

description: The occurrence of recent earthquakes with a considerable vertical component has drawn both engineers and researchers attention to the effect of vertical excitations more than the past. Regarding the high vertical to horizontal acceleration ratio of earthquakes which sometimes exceed the unit, the simultaneous effects of these two components cannot be ignored. In addition, the susceptibility of beams' length to vertical ground motions has been evident, yet studies on how the collapse risk of the buildings with various beam length can be affected by vertical excitations are a handful. Thus, in this paper, four 10 and 30-story RC frame-Core wall buildings with 6 and 12-meter beam span are designed, and the nonlinear models of them are developed in the platform of Opensees. Incremental Dynamic Analysis (IDA) in two states, once only under horizontal acceleration (H) and the other under both vertical and horizontal accelerations (H+V) are conducted using a suite of near-field ground motion records. Then, the IDA and the fragility curves are derived, and the collapse probability of the buildings in 1 year and 50 years has been calculated through the integration of seismic hazard and fragility curves in which the derivative of fragility curve is combined with hazard curve using the risk integral. The results indicated that the collapse risk of the buildings with longer beam spans under simultaneous horizontal and vertical excitations are noticeably greater than that of the buildings with 6-meter spans, and the sensitivity of tall buildings to vertical excitations is generally less than mid-rise buildings.
Speech Graffiti vs. Natural Language: Assessing the User Experience
Creators: name: Rosenfeld, Roni
name: Tomko, Stefanie
Publisher: name: Carnegie Mellon University
Year: 2004
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Speech-based interfaces have great potential but are hampered by problems related to spoken language such as variability, noise and ambiguity. Speech Graffiti was designed to address these issues via a structured, universal interface protocol for interacting with simple machines. Since Speech Graffiti requires that users speak to the system in a certain way, we were interested in how users might respond to such a system when compared with a natural language system. We conducted a user study and found that 74% of users preferred the Speech Graffiti system to a natural language interface in the same domain. User satisfaction scores were higher for Speech Graffiti and task completion rates were roughly equal.
Stability of the Solutions of Instantaneous Bethe-Salpeter Equations with Confining Interactions
Creators: name: Lucha, Wolfgang
name: Schoberl, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: For two bound-state equations derived as simplified forms of the Bethe-Salpeter equation with confining interaction, stability of all solutions is rigorously shown.
description: 4 pages, to appear in the Proceedings of Hadron 07, XII International Conference on Hadron Spectroscopy, Frascati (Rome), Italy, October 8-13, 2007
Speech Graffiti Habitability: What Do Users Really Say?
Creators: name: Rosenfeld, Roni
name: Tomko, Stefanie
Publisher: name: Carnegie Mellon University
Year: 2003
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: The Speech Graffiti interface is designed to be a portable, transparent interface for spoken language interaction with simple machines and information servers. Because it is a subset language, users must learn and adhere to the constraints of the language. We conducted a user study to determine habitability and found that more than 80% of utterances were Speech Graffiti-grammatical, suggesting that the language is acceptably learnable and usable for most users. We also analyzed deviations from grammaticality and found that natural language input accounted for the most deviations from Speech Graffiti. The results will suggest changes to the interface and can also inform design choices in other speech interfaces.
Local linear dependence seen through duality I
Creators: name: Pazzis, Clément de Seguins
Publisher: name: arXiv
Year: 2013
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 47L05, 15A03, 15A30, 17A35, 11E04

description: A vector space S of linear operators between vector spaces U and V is called locally linearly dependent (in abbreviated form: LLD) when every vector x of U is annihilated by a non-zero operator in S. A duality argument bridges the theory of LLD spaces to the one of vector spaces of non-injective operators. This new insight yields a unified approach to rediscover basic LLD theorems and obtain many additional ones thanks to the power of formal matrix computations. In this article, we focus on the minimal rank for a non-zero operator in an LLD space. Among other things, we reprove the Bresar-Semrl theorem, which states that an n-dimensional LLD operator space always contains a non-zero operator with rank less than n, and we improve the Meshulam-Semrl theorem that examines the case when no non-zero operator has rank less than n-1. We also tackle the minimal rank problem for a non-zero operator in an n-dimensional operator space that is not algebraically reflexive. A theorem of Meshulam and Semrl states that, for all fields with large enough cardinality, a non-reflexive operator space with dimension n must contain a non-zero operator with rank at most 2n-2. We show that there are infinitely many integers n for which this bound is optimal for general infinite fields. Moreover, under mild cardinality assumptions, we obtain a complete classification of the non-reflexive n-dimensional operator spaces in which no non-zero operator has rank less than 2n-2. This classification involves a new algebraic structure called left-division-bilinearizable (in abbreviated form: LDB) division algebras, which generalize a situation that is encountered with quaternions and octonions and whose systematic study occupies a large part of the present article.
description: 66 pages