cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Influence of roughness on near-field heat transfer between two plates
Creators: name: Biehs, Svend-Age
name: Greffet, Jean-Jacques
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The surface roughness correction to the near-field heat transfer between two rough bulk materials is discussed by using second-order perturbation theory. The results allow for estimating the impact of surface roughness to the heat transfer in recent experiments between two plates and between a microsphere and a plate (using the Derjaguin approximation). Furthermore, we show that the proximity approximation for describing rough surfaces is valid for distances much smaller than the correlation length of the surface roughness even if the heat transfer is dominated by the coupling of surface modes.
Maki Parameter and Upper critical Field of the Heavy-Fermion Superconductor UBe13
Creators: name: Shimizu, Yusei
name: Ikeda, Yoichi
name: Wakabayashi, Takumi
name: Haga, Yoshinori
name: Tenya, Kenichi
name: Hidaka, Hiroyuki
name: Yanagisawa, Tatsuya
name: Amitsuka, Hiroshi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have performed low-temperature specific-heat measurements in magnetic fields for a single crystal UBe13. It has been observed that our sample exhibits a superconducting transition at an intermediate temperature between previously reported values for two variant samples called H type and L type. The specific heat C(T) of our sample shows a T^3 behavior in the temperature range below 0.7 Tc, which is similar to the behavior of the H-type sample, suggesting the existence of point nodes in the superconducting gap function. We have obtained the upper-critical-field curves Hc2 for the [001], [110], and [111] crystal axes, which show no anisotropy at least down to the lowest measured temperature of 0.5 K. We have also derived the Maki parameter kappa2, and it has been revealed that the kappa2 steeply decreases isotropically upon cooling just below Tc. Paramagnetic effects and the symmetry of Cooper pairing of UBe13 are discussed.
description: 4 pages, 5 figures
Synchronized Andreev Transmission in Chains of SNS Junctions
Creators: name: Chtchelkatchev, N. M.
name: Baturina, T. I.
name: Glatz, A.
name: Vinokur, V. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We construct a nonequilibrium theory for the charge transfer through a diffusive array of alternating normal (N) and superconducting (S) islands comprising an SNSNS junction, with the size of the central S-island being smaller than the energy relaxation length. We demonstrate that in the nonequilibrium regime the central island acts as Andreev retransmitter with the Andreev conversions at both NS interfaces of the central island correlated via over-the-gap transmission and Andreev reflection. This results in a synchronized transmission at certain resonant voltages which can be experimentally observed as a sequence of spikes in the differential conductivity.
description: http://www.springer.com/materials/book/978-94-007-0043-7
Nonlinear optical response of hole-trion systems in quantum dots in tilted magnetic fields
Creators: name: Machnikowski, P.
name: Kuhn, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We discuss, from a theoretical point of view, the four wave mixing spectroscopy on an ensemble of p-doped quantum dots in a magnetic field slightly tilted from the in-plane configuration. We describe the system evolution in the density matrix formalism. In the limit of coherent ultrafast optical driving, we obtain analytical formulas for the single system dynamics and for the response of an inhomogeneously broadened ensemble. The results are compared to the previously studied time-resolved Kerr rotation spectroscopy on the same system. We show that the Kerr rotation and four wave mixing spectra yield complementary information on the spin dynamics (precession and damping).
description: 4 pages, 2 figures, conference NOEKS10
Observational evidence for a metal rich atmosphere on the super-Earth GJ1214b
Creators: name: Désert, Jean-Michel
name: Bean, Jacob
name: Kempton, Eliza Miller-Ricci
name: Berta, Zachory K.
name: Charbonneau, David
name: Irwin, Jonathan
name: Fortney, Jonathan J.
name: Burke, Christopher J.
name: Nutzman, Philip
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report observations of two consecutive transits of the warm super-Earth exoplanet GJ1214b at 3.6 and 4.5 microns with the Infrared Array Camera instrument on-board the Spitzer Space Telescope. The two transit light curves allow for the determination of the transit parameters for this system. We find these paremeters to be consistent with the previously determined values and no evidence for transit timing variations. The main investigation consists of measuring the transit depths in each bandpass to constrain the planet's transmission spectrum. Fixing the system scale and impact parameters, we measure R_p/R_star=0.1176 (+0.0008/-0.0009) and 0.1163 (+0.0010/-0.0008) at 3.6 and 4.5 microns, respectively. Combining these data with the previously reported MEarth Observatory measurements in the red optical yields constraints on the GJ1214b's transmission spectrum and allows us to rule-out a cloud-free, solar composition (i.e., hydrogen-dominated) atmosphere at 4.5 sigma confidence. This independently confirms a recent finding that was based on a measurement of the planet's transmission spectrum using the VLT. The Spitzer, MEarth, and VLT observations together yield a remarkably flat transmission spectrum over the large wavelength domain spanned by the data. Consequently, cloud-free atmospheric models require more than 30% metals (assumed to be in the form of H2O by volume to be consistent with all the observations.
description: Accepted for publication in ApJL. 13 pages, 3 figures, 1 table
fMRI comparison of response to familiar and unfamiliar music in AD
Creators: name: Yang, Lillian
Publisher: name: University of British Columbia
Year: 2015

description: Our study investigates whether neural activity corroborates existing behavioral evidence that familiar music is beneficial to Alzheimer’s Disease (AD) patients in music therapy (MT). We hypothesized that AD patients will show different patterns of blood-oxygen-level dependent (BOLD) activity, compared to healthy elderly controls, when listening to familiar versus unfamiliar music. Ten subjects with mild to moderate AD and ten healthy elderly controls underwent functional magnetic resonance imaging (fMRI) while listening to blocks of differing auditory stimuli, interleaved with blocks of static noise. The stimuli were a) familiar music b) unfamiliar music c) scrambled familiar music d) scrambled unfamiliar music. Each subject was exposed to each stimulus category twice, in randomized order. We found different patterns of activation emerge for AD patients versus control subjects when listening to familiar music and when listening to unfamiliar music. For familiar music, AD patients had more activated areas than control subjects. For unfamiliar music, control subjects had more activated areas than AD subjects. However, only one investigated area was significantly differently activated between the 2 groups. This area was the temporopolar area, and it was significantly more active in controls than in AD subjects during unfamiliar music. In this paper, we will first discuss the known neurological substrates of music processing and then the possible functions of the areas found significantly active in response to our musical stimuli. We begin with providing background information on music and the brain.
Super-Diffusive Spin-Transport as a Mechanism of Ultrafast Demagnetization
Creators: name: Battiato, Marco
name: Carva, Karel
name: Oppeneer, Peter M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose a semi-classical model for femtosecond-laser induced demagnetization due to spin-polarized excited electron diffusion in the super-diffusive regime. Our approach treats the finite elapsed time and transport in space between multiple electronic collisions exactly, as well as the presence of several metal films in the sample. Solving the derived transport equation numerically we show that this mechanism accounts for the experimentally observed demagnetization within 200fs in Ni, without the need to invoke any angular momentum dissipation channel.
Synthesis of reliability and validation practices used with the Rosenberg self-esteem scale
Creators: name: Villalobos Coronel, Mauricio
Publisher: name: University of British Columbia
Year: 2015

description: The Rosenberg Self-Esteem scale (RSES) is a commonly used measure, cited over 3,000 times in the past five years. The aim of this study was to produce a synthesis of the available sources of reliability and validity evidence for the RSES as classified by the Standards for Educational and Psychological Testing (AERA, APA & NCME, 2014). Despite the popularity of the RSES, only 27 articles have examined reliability and validity evidence for the scale. This study showed that the most prevalent source of reliability is based on internal consistency and the most prevalent validity evidence is based on internal structure, followed by relations to other variables. The latter source of evidence primarily consisted of convergent validity evidence. Evidence based on response processes is seldom examined and no studies examined validity evidence based on content or consequences of testing. When examining reliability, internal structure, and relations to other variables, studies tended to overlook the implications of the order in which these factors are studied. There is also a need for researchers to clearly state assumptions and criteria to interpret findings as well as more clarity in the reporting of results. The implications of these findings for researchers interested in the use of the RSES and for measurement experts will be discussed.
Directional Anisotropy of Swift Gamma-Ray Bursts
Creators: name: Veres, Péter
name: Bagoly, Zsolt
name: Horváth, István
name: Balázs, Lajos G.
name: Mészáros, Attila
name: Kelemen, János
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Swift satellite measurements contributed substantially to the gamma-ray burst (GRB) redshift observations through fast slewing to the source of the GRBs. Still, a large number of bursts are without redshift. We study the celestial distribution of bursts with various methods and compare them to a random catalog using Monte-Carlo simulations. We find an anisotropy in the distribution of the intermediate class of bursts and find that the short and long population are distributed isotropically.
description: 3 pages, 2 figures, appeared in The Ancient Universe With Gamma-Ray Bursts. AIP Conference Proceedings, Volume 1279, pp. 457-459 (2010)
title: Centenary (New Zealand)
title: Centenary (New Zealand)
Creators: name: Phillips, Jock
name: Baird, Kingsley
Publisher: name: BSB - Bavarian State Library
Year: 2020
Subjects: subject: Neuseeland
subject: Weltkrieg [1914-1918]
subject: Kollektives Gedächtnis
subject: World War, 1914-1918--New Zealand
subject: War memorials
subject: Collective memory

description: There was a large investment of government funds in the centenary commemoration of the First World War in New Zealand. This resulted in big government projects such as the creation of the Pukeahu National War Memorial Park in Wellington, official publications, exhibitions, and digital resources. It also encouraged a remarkable number of community activities including exhibitions, family histories, new local memorials, art works, and performances. Previously under-represented groups were involved, and the indigenous Māori community was central to many commemorative activities. A legacy of this investment is an increased knowledge and understanding about the war.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Additional file 1 of Plasma 25-hydroxyvitamin D level and the risk of frailty among Chinese community-based oldest-old: evidence from the CLHLS study
Creators: name: Xiao, Qi
name: Wu, Meiliyang
name: Cui, Jinrui
name: Yuan, Mengmei
name: Chen, Ye
name: Zeng, Tieying
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1 Supplementary Table S1 Distribution of observed data and imputed data. Supplementary Table S2 Sensitivity analysis of 25(OH) D (nmol/L) with risk of frailty.
title: Hong Kong
title: Hong Kong
Creators: name: Kwong, Chi Man
Publisher: name: BSB - Bavarian State Library
Year: 2020
Subjects: subject: Hongkong
subject: Geschichte
subject: Hong Kong (China)--History

description: Hong Kong, a British colony, experienced much social and economic change as the result of the First World War. The expansion of Japanese power in Asia and the destabilizing effect of the war on China made Hong Kong an increasingly vulnerable possession of the British Empire after the war.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
title: Best Cybersecurity Practices for Companies, Post Van Buren
Creators: name: Riley, Mary
Publisher: name: Old Dominion University Libraries
Year: 2021

description: Imagine this scenario: you are a small business owner, and you’ve just been informed of a network security breach. In your Zoom meeting with the IT Department, you learned the details: network activity logs revealed aberrant behavior after hours. Threat actors accessed systems containing sensitive information and downloaded copies of key files containing company trade secrets, market strategies, and customer data – all within a matter of minutes. Immediately, you review the consequences of the breach in your mind: reputational harm, monetary loss, and potential lawsuits. You ask the IT professional about the root cause of the breach. Was it a single individual or a syndicate that pulled off the hack? How did the threat actors manage to bypass the company’s firewall and network intrusion detection system?
Quark fragmentation in the $θ$-vacuum
Creators: name: Kang, Zhong-Bo
name: Kharzeev, Dmitri E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The vacuum of Quantum Chromodynamics is a superposition of degenerate states with different topological numbers that are connected by tunneling (the $θ$-vacuum). The tunneling events are due to topologically non-trivial configurations of gauge fields (e.g. the instantons) that induce local $\p$-odd domains in Minkowski space-time. We study the quark fragmentation in this topologically non-trivial QCD background. We find that even though QCD globally conserves $\p$ and $\cp$ symmetries, two new kinds of $\p$-odd fragmentation functions emerge. They generate interesting dihadron correlations: one is the azimuthal angle correlation $\sim \cos(ϕ_1 + ϕ_2)$ usually referred to as the Collins effect, and the other is the $\p$-odd correlation $\sim \sin(ϕ_1 + ϕ_2)$ that vanishes in the cross section summed over many events, but survives on the event-by-event basis. Using the chiral quark model we estimate the magnitude of these new fragmentation functions. We study their experimental manifestations in dihadron production in $e^+e^-$ collisions, and comment on the applicability of our approach in deep-inelastic scattering, proton-proton and heavy ion collisions.
description: 4 pages, 2 figures
Automated searching for quantum subsystem codes
Creators: name: Crosswhite, Gregory M.
name: Bacon, Dave
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum error correction allows for faulty quantum systems to behave in an effectively error free manner. One important class of techniques for quantum error correction is the class of quantum subsystem codes, which are relevant both to active quantum error correcting schemes as well as to the design of self-correcting quantum memories. Previous approaches for investigating these codes have focused on applying theoretical analysis to look for interesting codes and to investigate their properties. In this paper we present an alternative approach that uses computational analysis to accomplish the same goals. Specifically, we present an algorithm that computes the optimal quantum subsystem code that can be implemented given an arbitrary set of measurement operators that are tensor products of Pauli operators. We then demonstrate the utility of this algorithm by performing a systematic investigation of the quantum subsystem codes that exist in the setting where the interactions are limited to 2-body interactions between neighbors on lattices derived from the convex uniform tilings of the plane.
description: 38 pages, 15 figure, 10 tables. The algorithm described in this paper is available as both library and a command line program (including full source code) that can be downloaded from http://github.com/gcross/CodeQuest/downloads. The source code used to apply the algorithm to scan the lattices is available upon request. Please feel free to contact the authors with questions
Integration of process simulation with damage modelling of composite laminates using layerwise elements
Creators: name: Bakhtiarizadeh, Hamidreza
Publisher: name: University of British Columbia
Year: 2015

description: During the last decades, several simulation models have been introduced in numerical modelling of composite structures. Research works in this area are focused on either manufacturing process or in-service behaviour analysis of composite materials. Although, these two phenomena are not separable and the effects of curing process on in-service behaviour of composite material is inevitable in practice, process-induced residual stresses are rarely considered in the in-service analysis of materials. The main objective of this research is to combine the process simulation and in-service analysis of composite materials within a common finite element framework. This would make it possible to model a complete life cycle of composite material from the beginning of the curing process all the way to its failure. In this approach the process-induced residual stresses are carried over to the in-service analysis and failure of the material. The model is implemented in an existing framework for process modelling developed at UBC Composites Group. Minimizing computational cost and accuracy are two important objectives in modelling of composite structures and usually there is a trade-off between these two objectives. In this research with the objective of minimizing computational cost and having the capability of capturing through-thickness stresses accurately, the Layerwise element is selected for the finite element modelling framework. The performance of the integrated process/damage simulation framework is tested through modelling of flat curved composite laminates that undergo various processing (cure) cycles and are subsequently subjected to mechanical loads.
A geometric approach to integrability of Abel differential equations
Creators: name: Cariñena, José F.
name: de Lucas, Javier
name: Rañada, Manuel F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 34A26, 34A34

description: A geometric approach is used to study the Abel first order differential equation of the first kind. The approach is based on the recently developed theory of quasi-Lie systems which allows us to characterise some particular examples of integrable Abel equations. Second order Abel equations will be discussed and the inverse problem of the Lagrangian dynamics is analysed: the existence of two alternative Lagrangian formulations is proved, both Lagrangians being of a non-natural class. The study is carried out by means of the Darboux polynomials and Jacobi multipliers.
description: 10 pages
Nickel-Catalyzed Deoxycyanation of Activated Phenols via Cyanurate Intermediates with Zn(CN)2: A Route to Aryl Nitriles
Creators: name: Mommahed Heravi, Majid
name: Hosseinnejad, Tayebeh
name: Faghihi, Zeinab
name: Shiri, Morteza
name: Vazinfard, Mahdiyeh
Publisher: name: figshare
Year: 2022
Subjects: subject: 30302 Nanochemistry and Supramolecular Chemistry
subject: FOS: Chemical sciences
subject: 30502 Natural Products Chemistry
subject: 30205 Non-metal Chemistry
subject: Nuclear Chemistry
subject: 30503 Organic Chemical Synthesis
subject: 30303 Optical Properties of Materials
subject: Organic Chemistry
subject: 30504 Organic Green Chemistry
subject: 30599 Organic Chemistry not elsewhere classified

description: An efficient, high yielding and environmentally benign strategy to the synthesis of new 2-amino-3-cyano-4-H-chromene derivatives, via one-pot three-component reaction involving malononitrile, various α- or β-naphthol and appropriate aromatic aldehydes including 2-chloroquinoline-3-carbaldehydes in the presence of morpholine in water, was achieved. During the development of the synthesis five new chromene derivatives were fruitfully synthesized. It was found that employing this approach, aromatic aldehydes bearing electron-withdrawing groups give higher yields of the corresponding products in shorter reaction times. This observation was in agreement with topological analysis of calculated electron density functions using density functional theory and quantum theory of atoms in molecules approaches.
Quiver Grassmannians and degenerate flag varieties
Creators: name: Irelli, Giovanni Cerulli
name: Feigin, Evgeny
name: Reineke, Markus
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Quiver Grassmannians are varieties parametrizing subrepresentations of a quiver representation. It is observed that certain quiver Grassmannians for type A quivers are isomorphic to the degenerate flag varieties investigated earlier by the second named author. This leads to the consideration of a class of Grassmannians of subrepresentations of the direct sum of a projective and an injective representation of a Dynkin quiver. It is proven that these are (typically singular) irreducible normal local complete intersection varieties, which admit a group action with finitely many orbits, and a cellular decomposition. For type A quivers explicit formulas for the Euler characteristic (the median Genocchi numbers) and the Poincare polynomials are derived.
description: 23 pages
title: Self-Supervised Perceptual Ad-Blocker
Creators: name: Robinson, Killian
Publisher: name: Old Dominion University Libraries
Year: 2021

description: This project proposes a new self-supervised ad-blocker to minimize the amount of human effort required to effectively combat pushed advertisements. Current ad-blocker models are expensive to develop and not always effective in identifying advertisements. We investigated the possibility of solving these problems with the introduction of a deep learning, self-supervised ad-blocker model. More specifically, the proposed ad-blocker will be trained in a self-supervised fashion to tackle the issue of lacking labelled training data. The proposed solution was prototyped using Pytorch and achieved a detection accuracy of 81% on a diverse selection of popular websites.
Eight gamma-ray pulsars discovered in blind frequency searches of Fermi LAT data
Creators: name: Parkinson, P. M. Saz
name: Dormody, M.
name: Ziegler, M.
name: Ray, P. S.
name: Abdo, A. A.
name: Ballet, J.
name: Baring, M. G.
name: Belfiore, A.
name: Burnett, T. H.
name: Caliandro, G. A.
name: Camilo, F.
name: Caraveo, P. A.
name: de Luca, A.
name: Ferrara, E. C.
name: Freire, P. C. C.
name: Grove, J. E.
name: Gwon, C.
name: Harding, A. K.
name: Johnson, R. P.
name: Johnson, T. J.
name: Johnston, S.
name: Keith, M.
name: Kerr, M.
name: Knödlseder, J.
name: Makeev, A.
name: Marelli, M.
name: Michelson, P. F.
name: Parent, D.
name: Ransom, S. M.
name: Reimer, O.
name: Romani, R. W.
name: Smith, D. A.
name: Thompson, D. J.
name: Watters, K.
name: Weltevrede, P.
name: Wolff, M. T.
name: Wood, K. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of eight gamma-ray pulsars in blind frequency searches using the LAT, onboard the Fermi Gamma-ray Space Telescope. Five of the eight pulsars are young (tau_c<100 kyr), energetic (Edot>10^36 erg/s), and located within the Galactic plane (|b|<3 deg). The remaining three are older, less energetic, and located off the plane. Five pulsars are associated with sources included in the LAT bright gamma-ray source list, but only one, PSR J1413-6205, is clearly associated with an EGRET source. PSR J1023-5746 has the smallest characteristic age (tau_c=4.6 kyr) and is the most energetic (Edot=1.1E37 erg/s) of all gamma-ray pulsars discovered so far in blind searches. PSRs J1957+5033 and J2055+25 have the largest characteristic ages (tau_c~1 Myr) and are the least energetic (Edot~5E33 erg/s) of the newly-discovered pulsars. We present the timing models, light curves, and detailed spectral parameters of the new pulsars. We used recent XMM observations to identify the counterpart of PSR J2055+25 as XMMU J205549.4+253959. In addition, publicly available archival Chandra X-ray data allowed us to identify the likely counterpart of PSR J1023-5746 as a faint, highly absorbed source, CXOU J102302.8-574606. The large X-ray absorption indicates that this could be among the most distant gamma-ray pulsars detected so far. PSR J1023-5746 is positionally coincident with the TeV source HESS J1023-575, located near the young stellar cluster Westerlund 2, while PSR J1954+2836 is coincident with a 4.3 sigma excess reported by Milagro at a median energy of 35 TeV. Deep radio follow-up observations of the eight pulsars resulted in no detections of pulsations and upper limits comparable to the faintest known radio pulsars, indicating that these can be included among the growing population of radio-quiet pulsars in our Galaxy being uncovered by the LAT, and currently numbering more than 20.
description: Submitted to ApJ
Zur Erinnerung an Herrn Dr. Hans Frey, geboren den 8. August 1837, gestorben den 11. Februar 1915
Creators: name: (:Unkn) Unknown
Publisher: name: Zentralbibliothek Zürich
Year: 1915
Subjects: subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Frey-Matthys, Hans

description: Enthält: Personalien unseres verstorbenen Bruders Herrn Dr. Hans Frey; Ansprache von Herrn Pfarrer Ernst Miescher; Ansprache des Herrn E. Keiser, Präsident der Basler Liedertafel
Apresentação para Comunicação Oral - Gênero e Sexualidade na Pesquisa em Comunicação: Um estudo de trabalhos apresentados em congressos da Intercom
Creators: name: Tróia, Eliane
name: Lahni, Cláudia
Publisher: name: Zenodo
Year: 2022
Subjects: Relações de gênero
Feminismos
Direitos
Cidadania
Comunicação

description: Apresentação para a Comunicação Oral, realizada no I Seminário de Estudos da Condição Humana - A respiração em tempos de pandemia: resistência, vida e democracia, UFSCar-So, no dia 11 de Agosto de 2021.
description: Evento on-line
Encountering the K’I’s A’ums : reinterpretations of the spirit quest in three 21st-century Kwakwaka’wakw narratives
Creators: name: Frim, Daniel Joseph
Publisher: name: University of British Columbia
Year: 2015

description: This thesis examines three 21st-century Kwakwaka’wakw narratives that resonate with the notion of the spirit quest. It focuses on the ways in which these narratives give voice to reinterpretations of the spirit-quest typology in order to comment on contemporary cultural concerns. Unlike in most older Kwakwaka’wakw spirit-quest stories, the protagonists of these narratives do not obtain supernatural items, prestigious names, or ceremonial rights. Instead, the gifts they receive are faith in indigenous oral traditions and knowledge of Kwakwaka’wakw culture. By reinterpreting the spirit-quest typology in this manner, the stories highlight the importance of faith and education for the continued vitality of cultural transmission.
Planet migration: self-gravitating radiation hydrodynamical models of protoplanets with surfaces
Creators: name: Ayliffe, Ben A.
name: Bate, Matthew R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We calculate radial migration rates of protoplanets in laminar minimum mass solar nebula discs using three-dimensional self-gravitating radiation hydrodynamical (RHD) models. The protoplanets are free to migrate, whereupon their migration rates are measured. For low mass protoplanets (10-50 M_\oplus) we find increases in the migration timescales of up to an order of magnitude between locally-isothermal and RHD models. In the high-mass regime the migration rates are changed very little. These results are arrived at by calculating migration rates in locally-isothermal models, before sequentially introducing self-gravity, and radiative transfer, allowing us to isolate the effects of the additional physics. We find that using a locally-isothermal equation of state, without self-gravity, we reproduce the migration rates obtained by previous analytic and numerical models. We explore the impact of different protoplanet models, and changes to their assumed radii, upon migration. The introduction of self-gravity gives a slight reduction of the migration rates, whilst the inertial mass problem, which has been proposed for high mass protoplanets with circumplanetary discs, is reproduced. Upon introducing radiative transfer to models of low mass protoplanets (\approx 10 M_\oplus), modelled as small radius accreting point masses, we find outward migration with a rate of approximately twice the analytic inward rate. However, when modelling such a protoplanet in a more realistic manner, with a surface which enables the formation of a deep envelope, this outward migration is not seen.
description: 21 pages, 21 figures
title: Effects of Cloud Computing in the Workforce
Creators: name: Rossi Acosta, Kevin
Publisher: name: Old Dominion University Libraries
Year: 2021

description: In recent years, the incorporation of cloud computing and cloud services has increased in many different types of organizations and companies. This paper will focus on the philosophical, economical, and political factors that cloud computing and cloud services have in the workforce and different organizations. Based on various scholarly articles and resources it was observed that organizations used cloud computing and cloud services to increase their overall productivity as well as decrease the overall cost of their operations, as well as the different policies that were created by lawmakers to control the realm of cloud computing. The results of this paper support the positive outcome of the introduction of cloud computing and cloud services while also providing minor obstacles that organizations may face when in the process of introducing cloud computing in their organizations, as well as show different policies that help regulate cloud computing and cloud services.
Comparing parton energy loss models
Creators: name: van Leeuwen, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The similarities and differences between three commonly used formalisms for radiative parton energy loss in hot strongly interacting matter are discussed. The single gluon emission spectra are evaluated for a model system consisting of a homogeneous medium with a fixed length, the `TECHQM brick'. Sizable quantitative differences are found and the origins of these differences are discussed.
description: 6 pages, 3 figures, submitted to proceedings of 4th international conference on hard and electromagnetic probes of high-energy nuclear collisions
Near-field heat transfer between a nanoparticle and a rough surface
Creators: name: Biehs, Svend-Age
name: Greffet, Jean-Jacques
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we focus on the surface roughness correction to the near-field radiative heat transfer between a nanoparticle and a material with a rough surface utilizing a direct perturbation theory up to second order in the surface profile. We discuss the different distance regimes for the local density of states above the rough material and the heat flux analytically and numerically. We show that the heat transfer rate is larger than that corresponding to a flat surface at short distances. At larger distances it can become smaller due to surface polariton scattering by the rough surface. For distances much smaller than the correlation length of the surface profile, we show that the results converge to a proximity approximation, whereas in the opposite limit the rough surface can be replaced by an equivalent surface layer.
OPTIMIZATION OF ONBOARDSOLAR PANELGEOMETRYFOR POWERING AN ELECTRIC VEHICLE
Creators: name: Fraseur, Joseph L
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Photovoltaic devices (solar cells)
Electrical energy generation (incl. renewables, excl. photovoltaics)
Photovoltaic power systems
Special vehicles

description: Integrating solar energy into the electric vehicle (EV) market alleviates the demand for fossil fuels used to generate the electricity used to power these vehicles. Integrated solar panels provide a new method of power generation for an electric vehicle, but researchers must consider new dependent variables such as drag in the figure of vehicle efficiency. For the solar array to be deemed a viable option for power generation, the solar array must generate enough energy to overcome the added weight and aerodynamic drag forces the solar system introduces. The thesis explores the application of photovoltaic modules for power generation in an EV system. Researchers installed an off-the-shelf solar module on the roof of an EV and investigated the system to explore the efficiency tradeoffs. The research sought to identify an optimized solar panel configuration for minimized drag based on maximized panel surface irradiance, cooling, and array output voltage parameters. The study utilized computational fluid dynamics modeling, wind tunnel testing, and full-scale track testing to analyze the system. The results of this study provide an optimized configuration for a Renogy RNG-100D atop a Chevrolet Bolt. The system was considered optimal at a tilt angle of zero degrees when in motion. The performance benefits due to the increased angle of the solar panel tilt were deemed insufficient in overcoming the aerodynamic drag forces introduced into the system while in motion.
Host galaxies of luminous quasars: population synthesis of optical off-axis spectra
Creators: name: Wold, I.
name: Sheinis, A. I.
name: Wolf, M. J.
name: Hooper, E. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: There is increasing evidence of a connection between AGN activity and galaxy evolution. To obtain further insight into this potentially important evolutionary phase, we analyse the properties of quasar host galaxies. In this paper, we present a population synthesis modeling technique for off-axis spectra, the results of which constrain host colour and the stellar ages of luminous quasars (M_V(nuc) 10^40 erg s^-1) quasars to be located in redder host galaxies in comparison to their less luminous radio counterparts. While the host colour and age of our radio luminous sample is in close proximity to the green valley, our radio faint sample is consistent with quiescent star-forming galaxies. However, further observations are needed to confirm these results. Finally, we discuss future applications for our technique on a larger sample of objects being obtained via SALT and WIYN telescope observing campaigns.
description: 18 pages, 10 figures, accepted for publication in MNRAS
Synchronization in networks of mobile oscillators
Creators: name: Fujiwara, Naoya
name: Kurths, Jürgen
name: Díaz-Guilera, Albert
Publisher: name: arXiv
Year: 2010
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We present a model of synchronization in networks of autonomous agents where the topology changes due to agents motion. We introduce two time scales, one for the topological change and another one for local synchronization. If the former scale is much shorter, an approximation that averages out the effect of motion is available. Here we show, however, that the time required for synchronization achievement increases with respect to that approximation in the opposite case. We find that this effect is more important close to the continuum percolation transition point. The simulation results are confirmed by means of spectral analysis of the time dependent Laplacian matrix. Our results show that the trade-off between these two time scales, which have opposite effects on synchronization, should be taken into account for the design of mobile device networks.
description: 4 pages, 2 figures
The formation of the eccentric-orbit millisecond pulsar J1903+0327 and the origin of single millisecond pulsars
Creators: name: Zwart, Simon Portegies
name: Heuvel, Ed van den
name: van Leeuwen, Joeri
name: Nelemans, Gijs
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The millisecond pulsar J1903+0327 is accompanied by an ordinary G-dwarf star in an unusually wide ($P_{\rm orb} \simeq 95.2$\,days) and eccentric ($e \simeq 0.44$) orbit. The standard model for producing MSPs fails to explain the orbital characteristics of this extraordinary binary, and alternative binary models are unable to explain the observables. We present a triple-star model for producing MSPs in relatively wide eccentric binaries with a normal (main-sequence) stellar companion. We start from a stable triple system consisting of a Low-Mass X-ray Binary (LMXB) with an orbital period of at least 1 day, accompanied by a G-dwarf in a wide and possibly eccentric orbit. Variations in the initial conditions naturally provide a satisfactory explanation for the unexplained triple component in the eclipsing soft X-ray transient 4U~2129+47 or the cataclysmic variable EC 19314-5915. The best explanation for J1903, however, results from the expansion of the orbit of the LMXB, driven by the mass transfer from the evolving donor star to its neutron star companion, which causes the triple eventually to becomes dynamically unstable. Using numerical computations we show that, depending on the precise system configuration at the moment the triple becomes dynamically unstable, the ejection of each of the three components is possible. If the donor star of the LMXB is ejected, a system resembling J1903, will result. If the neutron star is ejected, a single MSP results. This model therefore also provides a straightforward mechanism for forming single MSP in the Galactic disk. We conclude that the Galaxy contains some 30--300 binaries with characteristics similar to J1903, and about an order of magnitude fewer single millisecond pulsars produced with the proposed triple scenario.
description: ApJ accepted for publication
Ingredients of supergravity
Creators: name: Freedman, Daniel Z.
name: Van Proeyen, Antoine
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: These notes give a summary of lectures given in Corfu in 2010 on basic ingredients in the study of supergravity. It also summarizes initial chapters of a forthcoming book `Supergravity' by the same authors.
description: 8 pages, to be published in Fortsch. Phys. as proceedings of the 10th Hellenic School on Elementary Particle Physics and Gravity, Corfu 2010; v2: reference added
The LABOCA survey of the Extended Chandra Deep Field South: A photometric redshift survey of submillimetre galaxies
Creators: name: Wardlow, J. L.
name: Smail, Ian
name: Coppin, K. E. K.
name: Alexander, D. M.
name: Brandt, W. N.
name: Danielson, A. L. R.
name: Luo, B.
name: Swinbank, A. M.
name: Walter, F.
name: Weiss, A.
name: Xue, Y. Q.
name: Zibetti, S.
name: Bertoldi, F.
name: Biggs, A. D.
name: Chapman, S. C.
name: Dannerbauer, H.
name: Dunlop, J. S.
name: Gawiser, E.
name: Ivison, R. J.
name: Knudsen, K. K.
name: Kovacs, A.
name: Lacey, C. G.
name: Menten, K. M.
name: Padilla, N.
name: Rix, H. -W.
name: van der Werf, P. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: [abridged] We derive photometric redshifts from 17-band optical to mid-IR photometry of 74 robust counterparts to 68 of the 126 submillimetre galaxies (SMGs) selected at 870um by LABOCA observations in the ECDFS. The median photometric redshift of identified SMGs is z=2.2\pm0.1, the interquartile range is z=1.8-2.7 and we identify 10 (~15%) high-redshift (z>3) SMGs. We derive a simple redshift estimator for SMGs based on the 3.6 and 8um fluxes, which is accurate to Delta_z~0.4 for SMGs at z<4. A statistical analysis of sources around unidentified SMGs identifies a population of likely counterparts with a redshift distribution peaking at z=2.5\pm0.3, which likely comprises ~60% of the unidentified SMGs. This confirms that the bulk of the undetected SMGs are coeval with those detected in the radio/mid-IR. We conclude that ~15% of all the SMGs are below the flux limits of our survey and lie at z>3 and hence ~30% of all SMGs have z>3. We estimate that the full S_870um>4mJy SMG population has a median redshift of 2.5\pm0.6. In contrast to previous suggestions we find no significant correlation between S_870um and redshift. The median stellar mass of the SMGs derived from SED fitting is (9.2\pm0.9)x10^10Msun and the interquartile range is (4.7-14)x10^10Msun, although we caution that uncertainty in the star-formation histories results in a factor of ~5 uncertainty in these stellar masses. The median characteristic dust temperature of SMGs is 35.9\pm1.4K and the interquartile range is 28.5-43.3K. The infrared luminosity function shows that SMGs at z=2-3 typically have higher far-IR luminosities and luminosity density than those at z=1-2. This is mirrored in the evolution of the star-formation rate density (SFRD) for SMGs which peaks at z~2. The maximum contribution of bright SMGs to the global SFRD (~5% for SMGs with S_870um>4mJy; ~50% for SMGs with S_870um>1mJy) also occurs at z~2.
description: Submitted for publication in MNRAS: 31 pages, 15 figures, 4 tables
Resumo Expandido para Sessão de Debates Relações de Gênero no Brasil do cenário pandêmico da Covid-19: Lugares [não] cristalizados
Creators: name: Tróia, Eliane
name: Lahni, Cláudia
Publisher: name: Zenodo
Year: 2022
Subjects: Desigualdades Sociais
Relações de Gênero
Mulheres
Lugares de Decisão
Covid-19 no Brasil

description: Resumo Expandido para participação em Sessão de Debate do II Seminário de Estudos da Condição Humana: Corpos políticos em travessia: Como criar outras formas de existir? II SECHu, no dia 07 de Julho de 2022, com a apresentação do trabalho: Relações de Gênero no Brasil do cenário pandêmico da Covid-19: Lugares [não] cristalizados. Debatedora: Profa. Dra. Viviane Melo de Mendonça. Disponível em < https://www.sechu.ufscar.br/arquivos/programacao-completa.pdf >
A method for real-time dynamic cloth wrinkling
Creators: name: Peters, Craig
Publisher: name: University of British Columbia
Year: 2015

description: This work presents a novel technique for generating a plausible rest shape to cloth animations which have none, and adding dynamic folds and wrinkles to them in real-time. The nature of real-time animations makes this task very challenging. The models used are typically very coarse, and the animations used are often nonphysical and exhibit poor temporal and spatial coherence. Since animations can move and deform in non-physical ways, the notion of a valid rest shape or reference shape is not well defined. Instead, we utilize a graph-cut framework to smoothly and consistently measure temporally local deformation in the animation, and use that to construct a per-triangle temporally adaptive pseudo-reference shape. From this shape we compute a stretch tensor field whose eigenvectors can be used to trace plausible dynamic wrinkle paths. We then harness the GPU tessellation unit to refine and deform the cloth along these paths to create wrinkle geometry. Our method runs in real-time on a variety of data sets.
D3.1 Selection of metro node architectures and optical technology options
Creators: name: Andrew Lord
name: Piat, Anna Chiadò
name: Percelsi, Alessandro
name: Quagliotti, Marco
name: Riccardi, Emilio
name: Moreolo, Michela Svaluto
name: Fabrega, Josep M.
name: Nadal, Laia
name: F. Javier Vilchez
name: Neelakandan Manihatty Bojan
name: Shuangyi Yan
name: Nejabati, Reza
name: Velasco, Luis
name: Junyent, Gabriel
name: Comellas, Jaume
name: Ruiz, Marc
name: Francesco Fresi,
name: Cugini, Filippo
name: Vergara, Jorge E. López De
name: López, Sergio
name: Julián, Guillermo
name: Zazo, José F.
name: Tobías Alonso
name: Stavdas, Alexandros
name: Parker, Mike
name: Fischer, Johannes
name: Emmerich, Robert
name: Calabretta, Nicola
name: Chigo Okonkwo
name: Costa, Nelson
name: Pedro, João
name: D'Errico, Antonio
name: Dochhan, Annika
name: Eiselt, Michael
name: Danish Rafique
name: Layec, Patricia
name: Boitier, Fabien
name: Almonacil, Sylvain
name: Pavón, Pablo
name: Dios, Óscar González De
name: Hernández, José Alberto
name: Parker, Mike
Publisher: name: Zenodo
Year: 2018

description: D3.1 reports details of the Metro Node and Optical Network Elements architectures together with

the relevant design guidelines for the access-metro and metro-core edge nodes, as well as the

WDM transport systems. The design guidelines and specifications for the technical

implementations to be undertaken in WP4 and WP5 are reported, together with a complete outline

of the activities undertaken in WP3 during the first year of the METRO-HAUL project.