cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Glemparon orautahi Jaschhof & Jaschhof, 2018, sp. nov.
Creators: name: Jaschhof, Mathias
name: Jaschhof, Catrin
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Cecidomyiidae
Glemparon
Glemparon orautahi

description: Glemparon orautahi sp. nov.
urn:lsid:zoobank.org:act: 70016DA0-BDA1-4D22-AD1A-DBE2D5E29DAD
Figs 1C, G, 10 A–D
Diagnosis
Genitalic structures characteristic of G. orautahi sp. nov. are the gonostylus, which is massive apically and strongly bent at the midlength (↓ 1, Fig. 10C); the tegminal processes, which consist of a strongly sclerotized, tuberculous portion posteriorly and a weakly sclerotized, spiny portion laterally (↓ 2, Fig. 10D); and the posteromedial protuberance, whose pointed, sclerotized process projects ventrally (↓ 3, Fig. 10B).
Etymology
The specific epithet, orautahi, is the Maori name for Smoky Beach, the place on Stewart Island where the holotype was collected.
Material examined
Holotype NEW ZEALAND: ♂, Stewart Island, Smoky Beach, 46.70° S, 167.84° E, 16 Jan. 2000, Malaise trap, R.K. Didham leg. (NZAC, no. CEC1428).
Other characters
BODY SIZE. 1.7 mm.
HEAD. Eye bridge 1–2 ommatidia long dorsally. Flagellomeres 15; neck of fourth flagellomere 1.5 times the node (Fig. 1G). Palpus slightly longer than head height, 4 setae-bearing segments, apical segment longest of all (Fig. 1C).
THORAX. Pronotal setae present.
WING. Length /width ratio 2.9. Rs short, one fifth of apicR 1.
LEGS. Basitarsal spines absent.
TERMINALIA. Posterior portion of ninth tergite strongly narrowed, covered densely with microtrichia, about 14 megatrichia on posterior edge (↓ 4, Fig. 10A). Gonocoxites with separate, narrow, unsetose portion ventrobasally; ventroposterior lobes large, subtriangular; a group of 4–5 dense setae and an inconspicuous double lobe at base of ventral emargination (Fig. 10B). Gonostylus 2.5 times longer than broad, markedly wedge-shaped apically (Fig. 10C). Apex of ejaculatory apodeme membranous, arrowshaped (Fig. 10B).
Distribution and phenology
The only specimen known of G. orautahi sp. nov. was collected at the height of summer in the native bush of Stewart Island.
description: Published as part of Jaschhof, Mathias & Jaschhof, Catrin, 2018, Descriptions of eighteen new species of Glemparon, a previously monotypic genus of Porricondylinae (Diptera, Cecidomyiidae), pp. 1-38 in European Journal of Taxonomy 450 on pages 19-20, DOI: 10.5852/ejt.2018.450, http://zenodo.org/record/3813931
Time invariant $\mathcal{PT}$-product and phase locking in $\mathcal{PT}$-symmetric lattice models
Creators: name: Joglekar, Yogesh N.
name: Onanga, Franck Assogba
name: Harter, Andrew K.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Over the past decade, non-Hermitian, $\mathcal{PT}$-symmetric Hamiltonians have been investigated as candidates for both, a fundamental, unitary, quantum theory, and open systems with a non-unitary time evolution. In this paper, we investigate the implications of the former approach in the context of the latter. Motivated by the invariance of the $\mathcal{PT}$ (inner) product under time evolution, we discuss the dynamics of wave-function phases in a wide range of $\mathcal{PT}$-symmetric lattice models. In particular, we numerically show that, starting with a random initial state, a universal, gain-site location dependent locking between wave function phases at adjacent sites occurs in the $\mathcal{PT}$-symmetry broken region. Our results pave the way towards understanding the physically observable implications of time-invariants in the non-unitary dynamics produced by $\mathcal{PT}$-symmetric Hamiltonians.
description: 7 pages, 5 figures
title: ADCO, Ordre cistercien : comptes (1499-1515) (11 H 1162), f. 00408
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: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: comptes

description: Ordre cistercien : comptes (1499-1515), Archives départementales de la Côte-d'Or, (11 H 1162). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Ordre cistercien : comptes (1499-1515), Archives départementales de la Côte-d'Or, (11 H 1162), f. 00408, 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 dependence of cosmic ray driven galactic winds on halo mass
Creators: name: Jacob, Svenja
name: Pakmor, Rüdiger
name: Simpson, Christine M.
name: Springel, Volker
name: Pfrommer, Christoph
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Galactic winds regulate star formation in disk galaxies and help to enrich the circum-galactic medium. They are therefore crucial for galaxy formation, but their driving mechanism is still poorly understood. Recent studies have demonstrated that cosmic rays (CRs) can drive outflows if active CR transport is taken into account. Using hydrodynamical simulations of isolated galaxies with virial masses between $10^{10}$ and $10^{13}\mathrm{~M_\odot}$, we study how the properties of CR-driven winds depend on halo mass. CRs are treated in a two-fluid approximation and their transport is modelled through isotropic or anisotropic diffusion. We find that CRs are only able to drive mass-loaded winds beyond the virial radius in haloes with masses below $10^{12}\mathrm{~M_\odot}$. For our lowest examined halo mass, the wind is roughly spherical and has velocities of $\sim20\mathrm{~km\;s^{-1}}$. With increasing halo mass, the wind becomes biconical and can reach ten times higher velocities. The mass loading factor drops rapidly with virial mass, a dependence that approximately follows a power-law with a slope between $-1$ and $-2$. This scaling is slightly steeper than observational inferences, and also steeper than commonly used prescriptions for wind feedback in cosmological simulations. The slope is quite robust to variations of the CR injection efficiency or the CR diffusion coefficient. In contrast to the mass loading, the energy loading shows no significant dependence on halo mass. While these scalings are close to successful heuristic models of wind feedback, the CR-driven winds in our present models are not yet powerful enough to fully account for the required feedback strength.
description: 16 pages, 10 figures, accepted for publication in MNRAS
Endogenously- but not Exogenously-driven Selective Sustained Attention is Related to Learning in a Classroom-like Setting in Kindergarten Children
Creators: name: Erickson, Lucy C.
name: Thiessen, Erik
name: Inaba, Karrie
name: Dickerson, John
name: Fisher, Anna
Publisher: name: Carnegie Mellon University
Year: 2015
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Selective sustained attention (SSA) is vital for higher order cognition. Although endogenous and exogenous factors influence SSA, assessment of the degree to which these factors influence performance and learning is often challenging. We report findings from the Track-It task, a paradigm that aims to assess the contribution of endogenous and exogenous factors to SSA within the same task. Behavioral accuracy and eye-tracking data on the Track-It task were correlated with performance on a learning task. Behavioral accuracy and fixations to distractors did not predict learning when exogenous factors supported SSA. In contrast, fixations to distractors were negatively correlated with learning when endogenous factors supported SSA. Similarly, higher behavioral accuracy was correlated with greater learning when endogenous factors supported SSA. These findings suggest that although children showed equivalent levels of distractibility when exogenous and endogenous factors supported SSA, different conditions of the Track-It task likely engaged different attentional control mechanisms.
Endogenous Spatial Attention: Evidence for Intact Functioning in Adults With Autism
Creators: name: Grubb, Michael A.
name: Behrmann, Marlene
name: Egan, Ryan
name: Minshew, Nancy J.
name: Carrasco, Marisa
name: Heeger, David J.
Publisher: name: Carnegie Mellon University
Year: 2013
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Rapid manipulation of the attention field (i.e. the location and spread of visual spatial attention) is a critical aspect of human cognition, and previous research on spatial attention in individuals with autism spectrum disorders (ASD) has produced inconsistent results. In a series of three psychophysical experiments, we evaluated claims in the literature that individuals with ASD exhibit a deficit in voluntarily controlling the deployment and size of the spatial attention field. We measured the spatial distribution of performance accuracies and reaction times to quantify the sizes and locations of the attention field, with and without spatial uncertainty (i.e. the lack of predictability concerning the spatial position of the upcoming stimulus). We found that high-functioning adults with autism exhibited slower reaction times overall with spatial uncertainty, but the effects of attention on performance accuracies and reaction times were indistinguishable between individuals with autism and typically developing individuals in all three experiments. These results provide evidence of intact endogenous spatial attention function in high-functioning adults with ASD, suggesting that atypical endogenous attention cannot be a latent characteristic of autism in general.
Aharonov-Bohm oscillations in p-type GaAs quantum rings
Creators: name: Grbic, Boris
name: Leturcq, Renaud
name: Ihn, Thomas
name: Ensslin, Klaus
name: Reuter, Dirk
name: Wieck, Andreas D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have explored phase coherent transport of holes in two p-type GaAs quantum rings with orbital radii 420 nm and 160 nm fabricated with AFM oxidation lithography. Highly visible Aharonov-Bohm (AB) oscillations are measured in both rings, with an amplitude of the oscillations exceeding 10% of the total resistance in the case of the ring with a radius of 160 nm. Beside the h/e oscillations, we resolve the contributions from higher harmonics of the AB oscillations. The observation of a local resistance minimum at B=0 T in both rings is a signature of the destructive interference of the holes' spins. We show that this minimum is related to the minimum in the h/2e oscillations.
description: Proceedings of EP2DS-17, Genova 2007; Accepted for Physica E; 3 pages, 3 figures
Flare Energy Release in the Lower Solar Atmosphere Near the Magnetic Field Polarity Inversion Line
Creators: name: Sharykin, I. N.
name: Sadykov, V. M.
name: Kosovichev, A. G.
name: Vargas-Dominguez, S.
name: Zimovets, I. V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study flare processes in the solar atmosphere using observational data for a M1-class flare of June 12, 2014, obtained by New Solar Telescope (NST/BBSO) and Helioseismic Magnetic Imager (HMI/SDO). The main goal is to understand triggers and manifestations of the flare energy release in the photosphere and chromosphere using high-resolution optical observations and magnetic field measurements. We analyze optical images, HMI Dopplergrams and vector magnetograms, and use Non-Linear Force-Free Field (NLFFF) extrapolations for reconstruction of the magnetic topology and electric currents. The NLFFF modelling reveals interaction of two magnetic flux ropes with oppositely directed magnetic field in the PIL. These flux ropes are observed as a compact sheared arcade along the PIL in the high-resolution broad-band continuum images from NST. In the vicinity of PIL, the NST H alpha observations reveal formation of a thin three-ribbon structure corresponding to a small-scale photospheric magnetic arcade. The observational results evidence in favor of location of the primary energy release site in the chromospheric plasma with strong electric currents concentrated near the polarity inversion line. In this case, magnetic reconnection is triggered by the interacting magnetic flux ropes forming a current sheet elongated along the PIL.
description: arXiv admin note: substantial text overlap with arXiv:1604.05380
Non-equilibrium electromagnetic fluctuations: Heat transfer and interactions
Creators: name: Krüger, Matthias
name: Emig, Thorsten
name: Kardar, Mehran
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Casimir force between arbitrary objects in equilibrium is related to scattering from individual bodies. We extend this approach to heat transfer and Casimir forces in non-equilibrium cases where each body, and the environment, is at a different temperature. The formalism tracks the radiation from each body and its scatterings by the other objects. We discuss the radiation from a cylinder, emphasizing its polarized nature, and obtain the heat transfer between a sphere and a plate, demonstrating the validity of proximity transfer approximation at close separations and arbitrary temperatures.
description: 4 pages, 2 figures, published version, minor changes (e.g. typos)
Introduction to Introduction to Types and Value of Persistent Identifiers (PIDs)
Creators: name: Mohamad, Mostafa
Publisher: name: Zenodo
Year: 2024

description: Persistent Identifiers (PIDs)

Definition: Persistent Identifiers (PIDs) are unique alphanumeric strings assigned to digital resources, ensuring a consistent reference to a specific resource, typically accompanied by metadata representation. They play a crucial role in enhancing the visibility, accessibility, and transparency of research outputs within the Open Research framework.

Examples of PIDs:

DOI (Digital Object Identifier):

Example: https://doi.org/10.34848/GJO6SY

ORCID iD (Open Researcher and Contributor ID):

Example: https://orcid.org/0000-0001-6622-4910

ROR ID (Research Organization Registry ID):

Example: https://ror.org/01y2jtd41

Types of PIDs:

PIDs for People (Researchers):

Include ISNI and ORCID

PIDs for Places (Research Institutions):

Include ROR IDs

PIDs for Things (Research Outputs and Resources):

Include DOIs, handles, IGSN, ARK, etc.

DOI System:

Consists of prefixes assigned to DataCite by the International DOI Foundation and suffixes assigned by repositories or automatically by DataCite.

Example: https://doi.org/10.1234/d567-4xf7

Value of PIDs: PIDs offer various benefits in research workflows, including:

Improving visibility and discoverability

Enhancing accessibility of research outputs

Making research datasets FAIR (Findable, Accessible, Interoperable, Reusable)

Recognizing all research outputs beyond journal articles

Increasing citations

Connecting research outputs with the global ecosystem

Boosting the impact of institutions

Promoting Open Research practices and FAIR Principles

Implementation in Research Workflows: Implementing PIDs in research workflows contributes to transparency, collaboration, and trust within the research ecosystem. It aligns with Open Research principles and fosters a culture of openness and accessibility.

Contacts:

Email: info@datacite.org

Websites: pidforum.org, datacite.org

Twitter: @datacite

Blog: blog.datacite.org

Support: support.datacite.org, support@datacite.org

Conclusion: Persistent Identifiers play a crucial role in the modern research landscape, providing a standardized and durable means of identifying and accessing digital resources, contributing to a more transparent and collaborative research ecosystem.
A q-Brauer algebra
Creators: name: Wenzl, Hans
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We define a new $q$-deformation of Brauer's centralizer algebra which contains Hecke algebras of type $A$ as unital subalgebras. We determine its generic structure as well as the structure of certain semisimple quotients. This is expected to have applications for constructions of subfactors of type II$_1$ factors and for module categories of fusion categories of type $A$ corresponding to certain symmetric spaces.
The GALEX View of "Boyajian's Star" (KIC 8462852)
Creators: name: Davenport, James. R. A.
name: Covey, Kevin R.
name: Clarke, Riley W.
name: Laycock, Zachery
name: Fleming, Scott W.
name: Boyajian, Tabetha S.
name: Montet, Benjamin T.
name: Shiao, Bernie
name: Million, Chase C.
name: Wilson, David J.
name: Olmedo, Manuel
name: Mamajek, Eric E.
name: Olmedo, Daniel
name: Chavez, Miguel
name: Bertone, Emanuele
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The enigmatic star KIC 8462852, informally known as "Boyajian's Star", has exhibited unexplained variability from both short timescale (days) dimming events, and years-long fading in the Kepler mission. No single physical mechanism has successfully explained these observations to date. Here we investigate the ultraviolet variability of KIC 8462852 on a range of timescales using data from the GALEX mission that occurred contemporaneously with the Kepler mission. The wide wavelength baseline between the Kepler and GALEX data provides a unique constraint on the nature of the variability. Using 1600 seconds of photon-counting data from four GALEX visits spread over 70 days in 2011, we find no coherent NUV variability in the system on 10-100 second or months timescales. Comparing the integrated flux from these 2011 visits to the 2012 NUV flux published in the GALEX-CAUSE Kepler survey, we find a 3% decrease in brightness for KIC 8462852. We find this level of variability is significant, but not necessarily unusual for stars of similar spectral type in the GALEX data. This decrease coincides with the secular optical fading reported by Montet & Simon (2016). We find the multi-wavelength variability is somewhat inconsistent with typical interstellar dust absorption, but instead favors a R$_V$ = 5.0 $\pm$ 0.9 reddening law potentially from circumstellar dust.
description: 8 pages, 4 figures, ApJ Accepted
title: ADCO, Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Cart. 32 (G 136), 745 folios, f. 1305
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 1305, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 1305, 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
Single-photon absorption by single photosynthetic light-harvesting complexes
Creators: name: Chan, Herman C. H.
name: Gamel, Omar E.
name: Fleming, Graham R.
name: Whaley, K. Birgitta
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide a unified theoretical approach to the quantum dynamics of absorption of single photons and subsequent excitonic energy transfer in photosynthetic light-harvesting complexes. Our analysis combines a continuous mode -photon quantum optical master equation for the chromophoric system with the hierarchy of equations of motion describing excitonic dynamics in presence of non-Markovian coupling to vibrations of the chromophores and surrounding protein. We apply the approach to simulation of absorption of single-photon coherent states by pigment-protein complexes containing between one and seven chromophores, and compare with results obtained by excitation using a thermal radiation field. We show that the values of excitation probability obtained under single-photon absorption conditions can be consistently related to bulk absorption cross-sections. Analysis of the timescale and efficiency of single-photon absorption by light-harvesting systems within this full quantum description of pigment-protein dynamics coupled to a quantum radiation field reveals a non-trivial dependence of the excitation probability and the excited state dynamics induced by exciton-phonon coupling during and subsequent to the pulse, on the bandwidth of the incident photon pulse. For bandwidths equal to the spectral bandwidth of Chlorophyll a, our results yield an estimation of an average time of ~0.09 s for a single chlorophyll chromophore to absorb the energy equivalent of one (single-polarization) photon under irradiation by single-photon states at the intensity of sunlight.
description: 24 pages, 12 figures
Magnetically gated accretion in an accreting 'non-magnetic' white dwarf
Creators: name: Scaringi, S.
name: Macarone, T. J.
name: D'Angelo, C.
name: Knigge, C.
name: Groot, P. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: White dwarfs are often found in binary systems with orbital periods ranging from tens of minutes to hours in which they can accrete gas from their companion stars. In about 15% of these binaries, the magnetic field of the white dwarf is strong enough ($\geq 10^6$ Gauss) to channel the accreted matter along field lines onto the magnetic poles. The remaining systems are referred to as "non-magnetic", since to date there has been no evidence that they have a dynamically significant magnetic field. Here we report an analysis of archival optical observations of the "non-magnetic" accreting white dwarf in the binary system MV Lyrae (hereafter MV Lyr), whose lightcurve displayed quasi-periodic bursts of $\approx 30$ minutes duration every $\approx 2$ hours. The observations indicate the presence of an unstable magnetically-regulated accretion mode, revealing the existence of magnetically gated accretion, where disk material builds up around the magnetospheric boundary (at the co-rotation radius) and then accretes onto the white dwarf, producing bursts powered by the release of gravitational potential energy. We infer a surface magnetic field strength for the white dwarf in MV Lyr between $2 \times 10^4 \leq B \leq 10^5$ Gauss, too low to be detectable by other current methods. Our discovery provides a new way of studying the strength and evolution of magnetic fields in accreting white dwarfs and extends the connections between accretion onto white dwarfs, young stellar objects and neutron stars, for which similar magnetically gated accretion cysles have been identified.
description: 7 pages, 4 figures. Accepted in Nature
A note on four dimensional (anti-)self-dual quasi-Einstein manifolds
Creators: name: Catino, Giovanni
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this short note we prove that any complete four dimensional anti-self-dual (or self-dual) quasi-Einstein manifolds is either Einstein or locally conformally flat. This generalizes a recent result of X. Chen and Y. Wang.
On the number of signals in multivariate time series
Creators: name: Matilainen, Markus
name: Nordhausen, Klaus
name: Virta, Joni
Publisher: name: arXiv
Year: 2018
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: We assume a second-order source separation model where the observed multivariate time series is a linear mixture of latent, temporally uncorrelated time series with some components pure white noise. To avoid the modelling of noise, we extract the non-noise latent components using some standard method, allowing the modelling of the extracted univariate time series individually. An important question is the determination of which of the latent components are of interest in modelling and which can be considered as noise. Bootstrap-based methods have recently been used in determining the latent dimension in various methods of unsupervised and supervised dimension reduction and we propose a set of similar estimation strategies for second-order stationary time series. Simulation studies and a sound wave example are used to show the method's effectiveness.
Strong spin-orbit interactions and weak antilocalization in carbon doped p-type GaAs heterostructures
Creators: name: Grbic, Boris
name: Leturcq, Renaud
name: Ihn, Thomas
name: Ensslin, Klaus
name: Reuter, Dirk
name: Wieck, Andreas D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a comprehensive study of the low-field magnetoresistance in carbon doped p-type GaAs/AlGaAs heterostructures aiming at the investigation of spin-orbit interaction effects. The following signatures of exceptionally strong spin-orbit interactions are simultaneously observed: a beating in the Shubnikov-de Haas oscillations, a classical positive magnetoresistance due to the presence of the two spin-split subbands, and a weak anti-localization dip in the magnetoresistance. The spin-orbit induced splitting of the heavy hole subband at the Fermi level is determined to be around 30% of the total Fermi energy. The phase coherence length of holes of around 2.5 $μ$m at a temperature of 70 mK, extracted from weak anti-localization measurements, is promissing for the fabrication of phase-coherent p-type nanodevices.
description: 8 pages, 6 figures;
A 3pi Search for Planet Nine at 3.4 microns with WISE and NEOWISE
Creators: name: Meisner, A. M.
name: Bromley, B. C.
name: Kenyon, S. J.
name: Anderson, T. E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The recent 'Planet Nine' hypothesis has led to many observational and archival searches for this giant planet proposed to orbit the Sun at hundreds of astronomical units. While trans-Neptunian object searches are typically conducted in the optical, models suggest Planet Nine could be self-luminous and potentially bright enough at ~3-5 microns to be detected by the Wide-field Infrared Survey Explorer (WISE). We have previously demonstrated a Planet Nine search methodology based on time-resolved WISE coadds, allowing us to detect moving objects much fainter than would be possible using single-frame extractions. In the present work, we extend our 3.4 micron (W1) search to cover more than three quarters of the sky and incorporate four years of WISE observations spanning a seven year time period. This represents the deepest and widest-area WISE search for Planet Nine to date. We characterize the spatial variation of our survey's sensitivity and rule out the presence of Planet Nine in the parameter space searched at W1 < 16.7 in high Galactic latitude regions (90% completeness).
description: some edits based on referee report
Undulatory swimming in viscoelastic fluids
Creators: name: Shen, Xiaoning
name: Arratia, P. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The effects of fluid elasticity on the swimming behavior of the nematode \emph{Caenorhabditis elegans} are experimentally investigated by tracking the nematode's motion and measuring the corresponding velocity fields. We find that fluid elasticity hinders self-propulsion. Compared to Newtonian solutions, fluid elasticity leads to 35% slower propulsion speed. Furthermore, self-propulsion decreases as elastic stresses grow in magnitude in the fluid. This decrease in self-propulsion in viscoelastic fluids is related to the stretching of flexible molecules near hyperbolic points in the flow.
description: 4 pages, 4 figures
Customized longitudinal electric field profiles: using spatial dispersion in dielectric wire arrays
Creators: name: Boyd, Taylor
name: Gratus, Jonathan
name: Kinsler, Paul
name: Letizia, Rosa
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We show how spatial dispersion can be used as a mechanism to customize the longitudinal profiles of electric fields inside modulated wire media, using a fast and remarkably accurate 1D inhomogeneous model. This customization gives fine control of the sub-wavelength behaviour of the field, as has been achieved recently for transverse fields in simpler slotted-slab media. Our scheme avoids any necessity to run a long series of computationally intensive 3D simulations of specific structures, in order to iteratively converge (or brute-force search) to an empirical `best-performance' design according to an abstract figure-of-merit. Instead, if supplied with an `ideal waveform' profile, we could now calculate how to construct it directly. Notably, and unlike most work on photonic crystal structures, our focus is specifically on the field profiles because of their potential utility, rather than other issues such as band-gap control, and/or transmission and reflection coefficients.
description: 9 pages, 13 figures
An interacting adiabatic quantum motor
Creators: name: Bruch, Anton
name: Kusminskiy, Silvia Viola
name: Refael, Gil
name: von Oppen, Felix
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a field theoretic treatment of an adiabatic quantum motor. We explicitly discuss a motor termed Thouless motor which is based on a Thouless pump operating in reverse. When a sliding periodic potential is considered as the motor degree of freedom, a bias voltage applied to the electron channel sets the motor in motion. We investigate a Thouless motor whose electron channel is modeled as a Luttinger liquid. Interactions increase the gap opened by the periodic potential. For an infinite Luttinger liquid the coupling induced friction is enhanced by electron-electron interactions. When the LL is ultimately coupled to Fermi liquid reservoirs, the dissipation reduces to its value for a noninteracting electron system for a constant motor velocity. Our results can also be applied to a motor based on a nanomagnet coupled to a quantum spin Hall edge.
description: 13 pages, 4 figures
Endogenous Control and Task Representation: An fMRI Study in Algebraic Problem Solving
Creators: name: Stocco, Andrea
name: Anderson, John R.
Publisher: name: Carnegie Mellon University
Year: 2008
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: The roles of prefrontal and anterior cingulate cortices have been widely studied, yet little is known on how they interact to enable complex cognitive abilities. We investigated this issue in a complex yet well-defined symbolic paradigm: algebraic problem solving. In our experimental problems, the demands for retrieving arithmetic facts and maintaining intermediate problem representations were manipulated separately. An analysis of functional brain images acquired while participants were solving the problems confirmed that prefrontal regions were affected by the retrieval of arithmetic facts, but only scarcely by the need to manipulate intermediate forms of the equations, hinting at a specific role in memory retrieval. Hemodynamic activity in the dorsal cingulate, on the contrary, increased monotonically as more information processing steps had to be taken, independent of their nature. This pattern was essentially mimicked in the caudate nucleus, suggesting a related functional role in the control of cognitive actions. We also implemented a computational model within the Adaptive Control of Thought—Rational (ACT-R) cognitive architecture, which was able to reproduce both the behavioral data and the time course of the hemodynamic activity in a number of relevant regions of interest. Therefore, imaging results and computer simulation provide evidence that symbolic cognition can be explained by the functional interaction of medial structures supporting control and serial execution, and prefrontal cortices engaged in the on-line retrieval of specific relevant information.
Encounters with the Force of Herbert A. Simon
Creators: name: Klahr, David
Publisher: name: Carnegie Mellon University
Year: 2004
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: In high-energy physics, one standard method for determining the properties of a particle is to examine its influence on other particles, whether through attraction, repulsion, absorption, deflection, fission or fusion. Analogously, in the domain of human interaction, it is possible to infer some of the characteristics of a man by examining the nature of his impact on those who felt the force of his mind and his character.
Tunneling conductance and local density of states in tight-binding junctions
Creators: name: Berthod, C.
name: Giamarchi, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the relationship between the differential conductance and the local density of states in tight-binding tunnel junctions where the junction' geometry can be varied between the point-contact and the planar-contact limits. The conductances are found to differ significantly in these two limiting cases. We also examine how the matrix element influences the tunneling characteristics and produces contrast in a simple model of scanning tunneling microscope (STM). Some implications regarding the interpretation of STM spectroscopic data in the cuprates are discussed. The calculations are carried out within the real-space Keldysh formalism.
description: Published version
Is Z^+(4430) a loosely bound molecular state?
Creators: name: Liu, Xiang
name: Liu, Yan-Rui
name: Deng, Wei-Zhen
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Since $Z^+(4430)$ lies very close to the threshold of $D^\ast{\bar D}_1$, we investigate whether $Z^+(4430)$ could be a loosely bound S-wave state of $D^\ast{\bar D}_1$ or $D^\ast{\bar D}^\prime_1$ with $J^P=0^-, 1^-, 2^-$, i.e., a molecular state arising from the one-pion-exchange potential. The potential from the crossed diagram is much larger than that from the diagonal scattering diagram. With various trial wave functions, we notice that the attraction from the one pion exchange potential alone is not strong enough to form a bound state with realistic pionic coupling constants deduced from the decay widths of $D_1$ and $D^\prime_1$.
description: 8 pages, 4 figures, 4 tables. Typos corrected, more discussions added
Encoding, learning, and spatial updating of multiple object locations specified by 3-D sound, spatial language, and vision.
Creators: name: Klatzky, Roberta
name: Lippa, Yvonne
name: Loomis, Jack M.
name: Golledge, Reginald G.
Publisher: name: Carnegie Mellon University
Year: 2003
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Participants standing at an origin learned the distance and azimuth of target objects that were specified by 3-D sound, spatial language, or vision. We tested whether the ensuing target representations functioned equivalently across modalities for purposes of spatial updating. In experiment 1, participants localized targets by pointing to each and verbalizing its distance, both directly from the origin and at an indirect waypoint. In experiment 2, participants localized targets by walking to each directly from the origin and via an indirect waypoint. Spatial updating bias was estimated by the spatial-coordinate difference between indirect and direct localization; noise from updating was estimated by the difference in variability of localization. Learning rate and noise favored vision over the two auditory modalities. For all modalities, bias during updating tended to move targets forward, comparably so for three and five targets and for forward and rightward indirect-walking directions. Spatial language produced additional updating bias and noise from updating. Although spatial representations formed from language afford updating, they do not function entirely equivalently to those from intrinsically spatial modalities.
Generalizing, Decoding, and Optimizing Support Vector Machine Classification
Creators: name: Krell, Mario Michael
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The classification of complex data usually requires the composition of processing steps. Here, a major challenge is the selection of optimal algorithms for preprocessing and classification (including parameterizations). Nowadays, parts of the optimization process are automized but expert knowledge and manual work are still required. We present three steps to face this process and ease the optimization. Namely, we take a theoretical view on classical classifiers, provide an approach to interpret the classifier together with the preprocessing, and integrate both into one framework which enables a semiautomatic optimization of the processing chain and which interfaces numerous algorithms.
Hierarchical fragmentation in the Perseus molecular cloud: From the cloud scale to protostellar objects
Creators: name: Pokhrel, Riwaj
name: Myers, Philip C.
name: Dunham, Michael M.
name: Stephens, Ian W.
name: Sadavoy, Sarah I.
name: Zhang, Qizhou
name: Bourke, Tyler L.
name: Tobin, John J.
name: Lee, Katherine I.
name: Gutermuth, Robert A.
name: Offner, Stella S. R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of hierarchical structure in the Perseus molecular cloud, from the scale of the entire cloud ($\gtrsim$10 pc) to smaller clumps ($\sim$1 pc), cores ($\sim$0.05-0.1 pc), envelopes ($\sim$300-3000 AU) and protostellar objects ($\sim$15 AU). We use new observations from the Submillimeter Array (SMA) large project "Mass Assembly of Stellar Systems and their Evolution with the SMA (MASSES)" to probe the envelopes, and recent single-dish and interferometric observations from the literature for the remaining scales. This is the first study to analyze hierarchical structure over five scales in the same cloud complex. We compare the number of fragments with the number of Jeans masses in each scale to calculate the Jeans efficiency, or the ratio of observed to expected number of fragments. The velocity dispersion is assumed to arise either from purely thermal motions, or from combined thermal and non-thermal motions inferred from observed spectral line widths. For each scale, thermal Jeans fragmentation predicts more fragments than observed, corresponding to inefficient thermal Jeans fragmentation. For the smallest scale, thermal plus non-thermal Jeans fragmentation also predicts too many protostellar objects. However at each of the larger scales thermal plus non-thermal Jeans fragmentation predicts fewer than one fragment, corresponding to no fragmentation into envelopes, cores, and clumps. Over all scales, the results are inconsistent with complete Jeans fragmentation based on either thermal or thermal plus non-thermal motions. They are more nearly consistent with inefficient thermal Jeans fragmentation, where the thermal Jeans efficiency increases from the largest to the smallest scale.
description: Accepted in ApJ. 21 pages, 15 figures, 4 tables
General scaling limitations of ground-plane and isolated-object cloaks
Creators: name: Hashemi, Hila
name: Oskooi, A.
name: Joannopoulos, J. D.
name: Johnson, Steven G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: We prove that, for arbitrary three-dimensional transformation-based invisibility cloaking of an object above a ground plane or of isolated object, there are practical constraints that increase with the object size. In particular, we show that the cloak thickness must scale proportional to the thickness of the object being cloaked, assuming bounded refractive indices, and that absorption discrepancies and other imperfections must scale inversely with the object thickness. For isolated objects, we also show that bounded refractive indices imply a lower bound on the effective cross-section.
description: 7 pages, 3 figures
Empirical and computational support for context-dependent representations of serial order: reply to Bowers, Damian, and Davis (2009).
Creators: name: Botvinick, Matthew M.
name: Plaut, David
Publisher: name: Carnegie Mellon University
Year: 2009
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: J. S. Bowers, M. F. Damian, and C. J. Davis critiqued the computational model of serial order memory put forth in M. Botvinick and D. C. Plaut, purporting to show that the model does not generalize in a way that people do. They attributed this supposed failure to the model's dependence on context-dependent representations, translating this argument into a general critique of all parallel distributed processing models. The authors reply here, addressing both Bowers et al.'s criticisms of the Botvinick and Plaut model and the former's assessment of parallel distributed processing models in general.
Multiconfigurational time-dependent Hartree method for describing particle loss due to absorbing boundary conditions
Creators: name: Kvaal, Simen
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Numerical Analysis (math.NA)
subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Absorbing boundary conditions in the form of a complex absorbing potential are routinely introduced in the Schrödinger equation to limit the computational domain or to study reactive scattering events using the multi-configurational time-dependent Hartree method (MCTDH). However, it is known that a pure wave-function description does not allow the modeling and propagation of the remnants of a system of which some parts are removed by the absorbing boundary. It was recently shown [S. Selstø and S. Kvaal, J. Phys. B: At. Mol. Opt. Phys. {\bfseries 43} (2010), 065004] that a master equation of Lindblad form was necessary for such a description. We formulate a multiconfigurational time-dependent Hartree method for this master equation, usable for any quantum system composed of any mixture of species. The formulation is a strict generalization of pure-state propagation using standard MCTDH. We demonstrate the formulation with a numerical experiment.
description: 5 figures, 13 pages
Angular Momentum Mixing in a Non-spherical Color Superconductor
Creators: name: Feng, Bo
name: Hou, Defu
name: Ren, Hai-cang
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the angular momentum mixing effects in the color superconductor with non-spherical pairing. We first clarify the concept of the angular momentum mixing with a toy model for non-relativistic and spinless fermions. Then we derive the gap equation for the polar phase of dense QCD by minimizing the CJT free energy. The solution of the gap equation consists of all angular momentum partial waves of odd parity. The corresponding free energy is found to be lower than that reported in the literature with p-wave only.
description: 17 pages, 2 figues, in latex; References added, typos fixed
Podcasts Educativos no Programa Unesp de Educação de Jovens e Adultos (PEJA) –SJRP.
Creators: name: Fábio Fernandes Villela, Fabio Villela
name: Luciani Tenani, Luciani Tenani
name: Fernanda Colombari de Salles Roselino, Fernanda Roselino
Publisher: name: Zenodo
Year: 2024
Subjects: Formação de Educadores
Letramento Digital
Podcasts
Educação de Jovens e Adultos
EJA

description: Podcasts Educativos no Programa Unesp de Educação de Jovens e Adultos (PEJA) –SJRP é uma apresentação no VIII Congresso Brasileiro de Educação da Faculdade de Ciências (FC) - UNESP - Câmpus de Bauru - Bauru - São Paulo - Brasil.
Emotional style, nasal cytokines, and illness expression after experimental rhinovirus exposure
Creators: name: Doyle, William J
name: Gentile, Deborah A
name: Cohen, Sheldon
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Psychosocial factors moderate the expression of illness during upper respiratory virus infections but past attempts to define mediational pathways were not successful. Here, we used a model of experimental rhinovirus infection in humans to evaluate three proinflammatory cytokines for their potential role in mediating the previously documented association between positive emotional style and illness. After assessing emotional style in 327 healthy adults, each was exposed to one of two strains of rhinovirus and followed for 5 days in quarantine. Symptoms/signs, nasal lavage IL-1β, IL-6, and IL-8 protein, and viral shedding were assessed at baseline and on each of the 5 days after exposure. Virus-specific antibody was assessed at baseline and 28 days after challenge. An analysis of the data for 234 subjects with documented infection showed that nasal IL-1β, IL-6, and IL-8 protein levels were all associated with greater illness expression but IL-6 was by far the best predictor of nasal signs and symptoms. Lower positive emotional style was associated with greater objective and subjective markers of illness and these associations were decreased substantially by controlling for IL-6 but not for IL-1β or IL-8. These results are consistent with the hypothesis that IL-6 acts as a biological mediator in linking positive emotional style to illness expression during rhinovirus infection.