cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: ResiliScence 4 COVID-19: social sensing & intelligence for forecasting human response in future COVID-19 scenarios, towards social systems resilience
Creators: name: Gaspar de Carvalho, Rui
name: Rodrigues, Ana Paula
name: Raposo, Beatriz
name: Godinho, Cristina
name: Boavida, Fernando
name: Leiras, Gisela
name: Toscano, Hugo
name: Filipe, Jessica
name: Silva, Jorge Sá
name: Fernandes, Marcelo
name: Arriaga, Miguel
name: Francisco, Rita
name: Domingos, Samuel
name: Silva, Susana
name: Espassandim, Teresa
Publisher: name: Universidade Católica Portuguesa
Year: 2021

description: A widely discussed scenario in the current pandemic, refers to the creation of a vaccine for COVID-19. But how will citizens respond in other scenarios, e.g. if there is no vaccine? Or if there is no effective therapy or group immunity? Because human behaviour is the most effective mechanism for social control of the pandemic in the absence of a vaccine or other control measures, being able to predict it will allow to intervene proactively, reducing the burden on the National Health System and increasing its resilience. To do so, theoretical models of crisis management and crisis communication and predictive models of SARS-CoV-2 contagion risk prevention behaviours were created based on data from human sensors. This was grounded on data collected from social media, longitudinal surveys and "smart" data (collected through smartphones/smartwatches). Based on the results, proposals were shared with the Directorate-General for Health, focused on the development of strategies and resources to promote social mobilization and resilience, customized to different crisis stages and future pandemic scenarios.
description: Um cenário amplamente discutido face à atual pandemia, prevê a criação de vacinas para a COVID-19. Mas como responderão os cidadãos noutros cenários, e.g. se não existir vacina? Ou se não existir terapêutica adequada ou imunidade de grupo? Sendo o comportamento humano o mais eficaz mecanismo de controlo social da pandemia na ausência de vacina ou outras medidas de controlo, conseguir prevê-lo permitirá intervir proactivamente, reduzindo a sobrecarga e aumentando a resiliência do Sistema Nacional de Saúde. Com esse fim, foram criados modelos teóricos de gestão e comunicação de crise e modelos preditivos de comportamentos de prevenção do risco por contágio de SARS-CoV-2. Estes foram sustentados em dados de sensores humanos, tendo por base a análise de dados extraídos de redes sociais, inquéritos longitudinais e dados "inteligentes" (recolhidos por smartphone). A partir dos resultados, foram elaboradas recomendações emitidas para a Direção-Geral da Saúde, com vista ao desenvolvimento de estratégias e recursos promotores de mobilização e resiliência social, customizadas às diferentes fases de crise e futuros cenários de pandemia.
Strangers at the gate : hospitality in a time of terror
Creators: name: Balfour, Lindsay Anne
Publisher: name: University of British Columbia
Year: 2015

description: My dissertation offers a reading of hospitality that suggests the encounter with strangers is at the core of cultural production and culture itself in the aftermath of the terrorist attacks of September 11, 2001. My argument for the necessity of hospitality after 9/11 holds in tension the notion of a Law of hospitality – a welcome to whoever or whatever will arrive, however unexpected and however violently – and an attentiveness to a discourse of unconditional welcome that is challenged and even made unbearable by the particular conditions of social and cultural life in a time of terror. I have selected works of cultural memory, film, art and literature that show the breadth of hospitality’s influence across a variety of cultural forms but that offer a depth of insight, historical specificity, and theoretical intensity that only a product created in the aftermath of 9/11 allows. The National September 11 Memorial and Museum in New York City is, I argue, best understood as an institution defined by the question of hospitality, particularly as hospitality is engaged or disavowed through an experience with loss. Moreover, I consider how hospitality might function in consideration of the violence perpetuated against bodies marked by discourses of race, gender, and sexuality, as is the case in the 2011 film, Zero Dark Thirty and separately explore how alternative modes of hospitality are enabled by the fluid and dynamic space of the street and the urban art found there. Examining Don DeLillo's 2007 novel Falling Man, I argue for a sustained engagement with hospitality through the figure of organic shrapnel, a metaphor that suggests the possibility of being literally and figuratively embedded by another. The purpose of this project is not to furnish an ideal practice of program of hospitality; rather, it is to point out the diverse and even devastating ways that hospitality appears in ways that remind us that, if hospitality as we understand it is failing, it matters more than ever how we deploy it.
(Hessenberg) eigenvalue-eigenmatrix relations
Creators: name: Zemke, Jens-Peter M.
Publisher: name: TUHH Universitätsbibliothek
Year: 2004
Subjects: subject: Algebraic eigenvalue problem
subject: eigenvalue-eigenmatrix relations
subject: Jordan normal form
subject: adjugate
subject: principal submatrices
subject: 510: Mathematik
subject: Eigenwertberechnung
subject: Matrizen-Eigenwertaufgabe
subject: 510
subject: 15A57:Other types of matrices (Hermitian, skew-Hermitian, etc.)
subject: 15A15:Determinants, permanents, other special matrix functions
subject: 15A24:Matrix equations and identities
subject: 15A18:Eigenvalues, singular values, and eigenvectors
subject: 15A18
subject: 15A57
subject: 15A15
subject: 15A24

description: Explicit relations between eigenvalues, eigenmatrix entries and matrix elements are derived. First, a general, theoretical result based on the Taylor expansion of the adjugate of zI - A on the one hand and explicit knowledge of the Jordan decomposition on the other hand is proven. This result forms the basis for several, more practical and enlightening results tailored to non-derogatory, diagonalizable and normal matrices, respectively. Finally, inherent properties of (upper) Hessenberg, resp. tridiagonal matrix structure are utilized to construct computable relations between eigenvalues, eigenvector components, eigenvalues of principal submatrices and products of lower diagonal elements.
Detection of mixed-culture growth in the total biomass data by wavelet transforms
Creators: name: Rosu, H. C.
name: Murguia, J. S.
name: Ibarra-Junquera, V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: We have shown elsewhere that the presence of mixed-culture growth of microbial species in fermentation processes can be detected with high accuracy by employing the wavelet transform. This is achieved because the crosses in the different growth processes contributing to the total biomass signal appear as singularities that are very well evidenced through their singularity cones in the wavelet transform. However, we used very simple two-species cases. In this work, we extend the wavelet method to a more complicated illustrative fermentation case of three microbial species for which we employ several wavelets of different number of vanishing moments in order to eliminate possible numerical artifacts. Working in this way allows to filter in a more precise way the numerical values of the Hölder exponents. Therefore, we were able to determine the characteristic Hölder exponents for the corresponding crossing singularities of the microbial growth processes and their stability logarithmic scale ranges up to the first decimal in the value of the characteristic exponents. Since calibrating the mixed microbial growth by means of their Hölder exponents could have potential industrial applications, the dependence of the Hölder exponents on the kinetic and physical parameters of the growth models remains as a future experimental task
description: 6 pages,3 figures, three other similar figures left out
Innovationsmanagement in kleinen und mittleren Unternehmen
Creators: name: Verworn, Birgit
name: Lüthje, Christian
name: Herstatt, Cornelius
Publisher: name: TUHH Universitätsbibliothek
Year: 2000
Subjects: subject: 85.15:Forschung und Entwicklung
subject: Innovationsmanagement
subject: Innovationsprozess
subject: Produktinnovation
subject: Projektmanagement
subject: 85.15
subject: 330

description: In der einschlägigen Literatur wird in der Regel das Bild stark formalisierter und methodengestützter Innovationsprozesse aufgezeichnet, das primär für große Unternehmen zutreffend erscheint. Inwieweit sich diese Vorstellung auch auf Organisationen geringerer Größe übertragen lässt, steht im Fokus der vorliegenden Studie. In einer explorativen Befragung werden der Methodeneinsatz sowie die Stärken bzw. Schwächen bei Innovationsprozessen kleiner und mittlerer Unternehmen (KMU) untersucht. Das zentrale Ergebnis ist, dass sich das Innovationsmanagement in KMU häufig informal, wenig standardisiert und unter geringem Einsatz von Methoden vollzieht. Dies ist insbesondere in den frühen Phasen des Innovationsprozesses festzustellen. Frühe Defizite im Innovationsmanagement setzen sich häufig in den nachfolgenden Phasen im Prozessablauf fort.
description: Since studies on innovation management mainly focus on large companies, empirical findings predominately support the idea of standardized innovation projects which are based on an extensive use of management methods and tools. This explorative study examines whether these findings can be applied to small and medium sized enterprises (SMEs). Therefore, the use of innovation management methods and tools and main strengths/weaknesses of innovation projects in SMEs are explored. The key finding of this study is the low level of standardization and formalization during innovation projects in SMEs. Methods and tools for the management of innovation are rarely applied. This is especially true for the front end of innovation. In addition, shortcomings in the front end proved to be a negative impact on innovation management in the subsequent stages of the project.
The relative contributions of the premotor and posterior parietal cortices to forward models of movement.
Creators: name: Hermosillo, Robert Jeremiah Matthias
Publisher: name: University of British Columbia
Year: 2015

description: Producing smooth, coordinated movement may seem like a relatively simple process, but it actually requires a complex computational framework in order to reach accurately. It has been hypothesized that the brain predicts the sensory consequences of movement, and indeed, much research has laid down the theoretical framework for this process, however it is unclear how motor planning signals are used to determine the spatial configuration of the limbs. In this dissertation repetitive transcranial magnetic stimulation (rTMS) was applied to candidate sites in the fronto-parietal network to observe how this would affect decisions in a temporal order judgment (TOJ) task under stationary and moving conditions while participants were planning to cross their arms. Previous work has shown that under stationary conditions, error rates increase when participants have their arms in a crossed configuration or are simply planning to cross the arms. Under stationary conditions we observed an increase in TOJ error after rTMS was applied to the posterior parietal cortex (PPC), but not when it was applied to the dorsal premotor cortex (dPMC). However under moving conditions, rTMS caused a decreased in error rates when applied to either the dPMC or the PPC. By contrast, rTMS over a control site (area V4) resulted in no change in error rates under either stationary or moving conditions. Together, these 3 experiments suggest that predictions about the spatial consequences of limb movement use planning signals generated in the dPMC while limb spatial position information is generated within the PPC.
SS Ari: a shallow-contact close binary system
Creators: name: Liang, Liu
name: Shengbang, Qian
name: Jiajia, He
name: Jia, Zhang
name: Linjia, Li
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Two CCD epochs of light minimum and a complete R light curve of SS Ari are presented. The light curve obtained in 2007 was analyzed with the 2003 version of the W-D code. It is shown that SS Ari is a shallow contact binary system with a mass ratio $q=3.25$ and a degree of contact factor f=9.4(\pm0.8%). A period investigation based on all available data shows that there may exist two distinct solutions about the assumed third body. One, assuming eccentric orbit of the third body and constant orbital period of the eclipsing pair results in a massive third body with $M_3=1.73M_{\odot}$ and P_3=87.0$yr. On the contrary, assuming continuous period changes of the eclipsing pair the orbital period of tertiary is 37.75yr and its mass is about $0.278M_{\odot}$. Both of the cases suggest the presence of an unseen third component in the system.
description: 28 pages, 9 figures and 5 tables
Ionization detail parameters and cluster dose: A mathematical model for selection of nanodosimetric quantities for use in treatment planning in charged particle radiotherapy
Creators: name: Faddegon, Bruce
name: Blakely, Eleanor A.
name: Burigo, Lucas
name: Censor, Yair
name: Dokic, Ivana
name: Kondo, Naoki Dominguez
name: Ortiz, Ramon
name: Mendez, Jose Ramos
name: Rucinski, Antoni
name: Schubert, Keith
name: Wahl, Niklas
name: Schulte, Reinhard
Publisher: name: arXiv
Year: 2024
Subjects: subject: Medical Physics (physics.med-ph)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Objective: To propose a mathematical model for applying Ionization Detail (ID), the detailed spatial distribution of ionization along a particle track, to proton and ion beam radiotherapy treatment planning (RTP). Approach: Our model provides for selection of preferred ID parameters (I_p) for RTP, that associate closest to biological effects. Cluster dose is proposed to bridge the large gap between nanoscopic I_p and macroscopic RTP. Selection of I_p is demonstrated using published cell survival measurements for protons through argon, comparing results for nineteen Ip: N_k; k = 2,3,...,10, the number of ionizations in clusters of k or more per particle, and F_k; k = 1,2,...,10, the number of clusters of k or more per particle. We then describe application of the model to ID-based RTP and propose a path to clinical translation. Main results: The preferred I_p were N_4 and F_5 for aerobic cells, N_5 and F_7 for hypoxic cells. Signifcant differences were found in cell survival for beams having the same LET or the preferred N_k. Conversely, there was no signi?cant difference for F_5 for aerobic cells and F_7 for hypoxic cells, regardless of ion beam atomic number or energy. Further, cells irradiated with the same cluster dose for these I_p had the same cell survival. Based on these preliminary results and other compelling results in nanodosimetry, it is reasonable to assert that I_p exist that are more closely associated with biological effects than current LET-based approaches and microdosimetric RBE-based models used in particle RTP. However, more biological variables such as cell line and cycle phase, as well as ion beam pulse structure and rate still need investigation. Signifcance: Our model provides a practical means to select preferred I_p from radiobiological data, and to convert I_p to the macroscopic cluster dose for particle RTP.
description: 31 pages, 12 figures
Coding for High-Density Recording on a 1-D Granular Magnetic Medium
Creators: name: Mazumdar, Arya
name: Barg, Alexander
name: Kashyap, Navin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In terabit-density magnetic recording, several bits of data can be replaced by the values of their neighbors in the storage medium. As a result, errors in the medium are dependent on each other and also on the data written. We consider a simple one-dimensional combinatorial model of this medium. In our model, we assume a setting where binary data is sequentially written on the medium and a bit can erroneously change to the immediately preceding value. We derive several properties of codes that correct this type of errors, focusing on bounds on their cardinality. We also define a probabilistic finite-state channel model of the storage medium, and derive lower and upper estimates of its capacity. A lower bound is derived by evaluating the symmetric capacity of the channel, i.e., the maximum transmission rate under the assumption of the uniform input distribution of the channel. An upper bound is found by showing that the original channel is a stochastic degradation of another, related channel model whose capacity we can compute explicitly.
description: Submitted to IEEE Transactions on Information Theory
Collective Uncertainty Entanglement Test
Creators: name: Rudnicki, Łukasz
name: Horodecki, Paweł
name: Życzkowski, Karol
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For a given pure state of a composite quantum system we analyze the product of its projections onto a set of locally orthogonal separable pure states. We derive a bound for this product analogous to the entropic uncertainty relations. For bipartite systems the bound is saturated for maximally entangled states and it allows us to construct a family of entanglement measures, we shall call collectibility. As these quantities are experimentally accessible, the approach advocated contributes to the task of experimental quantification of quantum entanglement, while for a three-qubit system it is capable to identify the genuine three-party entanglement.
description: 4 pages, 3 figures
The UK Infrared Telescope M33 monitoring project. I. Variable red giant stars in the central square kiloparsec
Creators: name: Javadi, Atefeh
name: van Loon, Jacco Th.
name: Mirtorabi, Mohammad Taghi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have conducted a near-infrared monitoring campaign at the UK InfraRed Telescope (UKIRT), of the Local Group spiral galaxy M33 (Triangulum). The main aim was to identify stars in the very final stage of their evolution, and for which the luminosity is more directly related to the birth mass than the more numerous less-evolved giant stars that continue to increase in luminosity. The most extensive dataset was obtained in the K-band with the UIST instrument for the central 4'x 4' (1 square kpc) - this contains the nuclear star cluster and inner disc. These data, taken during the period 2003-2007, were complemented by J- and H-band images. Photometry was obtained for 18,398 stars in this region; of these, 812 stars were found to be variable, most of which are Asymptotic Giant Branch (AGB) stars. Our data were matched to optical catalogues of variable stars and carbon stars, and to mid-infrared photometry from the Spitzer Space Telescope. In this first of a series of papers, we present the methodology of the variability survey and the photometric catalogue - which is made publicly available at the Centre de Donnees astronomiques de Strasbourg (CDS) - and discuss the properties of the variable stars. Most dusty AGB stars had not been previously identified in optical variability surveys, and our survey is also more complete for these types of stars than the Spitzer survey.
description: Accepted for publication in MNRAS
Detection of a planetary system orbiting the eclipsing polar HU Aqr
Creators: name: Qian, S. -B.
name: Liu, L.
name: Liao, W. -P.
name: Li, L. -J.
name: Zhu, L. -Y.
name: Dai, Z. -B.
name: He, J. -J.
name: Zhao, E. -G.
name: Zhang, J.
name: Li, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Using the precise times of mid-egress of the eclipsing polar HU Aqr, we discovered that this polar is orbited by two or more giant planets. The two planets detected so far have masses of at least 5.9 and 4.5\,M_{Jup}. Their respective distances from the polar are 3.6 AU and 5.4 AU with periods of 6.54 and 11.96 years, respectively. The observed rate of period decrease derived from the downward parabolic change in O-C curve is a factor 15 larger than the value expected for gravitational radiation. This indicates that it may be only a part of a long-period cyclic variation, revealing the presence of one more planet. It is interesting to note that the two detected circumbinary planets follow the Titus-Bode law of solar planets with n=5 and 6. We estimate that another 10 years of observations will reveal the presence of the predicted third planet.
description: 13 pages, 4 figures, 2 tables
Chromospheric Jet and Growing "Loop" Observed by Hinode: New Evidence of Fan-Spine Magnetic Topology Resulting From Flux Emergence
Creators: name: Liu, Wei
name: Berger, Thomas E.
name: Title, Alan M.
name: Tarbell, Theodore D.
name: Low, B. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present observations of a chromospheric jet and growing "loop" system that show new evidence of a fan-spine topology resulting from magnetic flux emergence. This event, occurring in an equatorial coronal hole on 2007 February 9, was observed by the Hinode Solar Optical Telescope in the Ca II H line in unprecedented detail. The predecessor of the jet is a bundle of fine material threads that extend above the chromosphere and appear to rotate about the bundle axis at ~50 km/s (period <200 s). These rotations or transverse oscillations propagate upward at velocities up to 786 km/s. The bundle first slowly and then rapidly swings up, with the transition occurring at the onset of an A4.9 flare. A loop expands simultaneously in these two phases (velocity: 16-135 km/s). Near the peak of the flare, the loop appears to rupture; simultaneous upward ejecta and mass downflows faster than free-fall appear in one of the loop legs. The material bundle then swings back in a whiplike manner and develops into a collimated jet, which is orientated along the inferred open field lines with transverse oscillations continuing at slower rates. Some material falls back along smooth streamlines, showing no more oscillations. At low altitudes, the streamlines bifurcate at presumably a magnetic null point and bypass an inferred dome, depicting an inverted-Y geometry. These streamlines closely match in space the late Ca II H loop and X-ray flare loop. These observations are consistent with the model that flux emergence in an open-field region leads to magnetic reconnection, forming a jet and fan-spine topology. We propose that the material bundle and collimated jet represent the outer spine in quasi-static and eruptive stages, respectively, and the growing loop is a 2D projection of the 3D fan surface.
description: Accepted by ApJ, 2010 December 8, 16 pages, 15 figures, 2 tables; followup study of an earlier ApJ Letter, http://adsabs.harvard.edu/abs/2009ApJ...707L..37L
New physics searches with the International Large Detector at the ILC
Creators: name: Berggren, Carl Mikael
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2021
Subjects: talk: online 2021/07/26
electron positron: annihilation
electron positron: colliding beams
electron: polarized beam
positron: polarized beam
supersymmetry: signature
ILC Coll
new particle
new physics: search for
supersymmetry: parameter space
stau
slepton
dark matter
Higgsino
CERN LHC Coll
sensitivity
linear collider
ILD detector
numerical calculations: Monte Carlo
proposed experiment

description: Although the LHC experiments have searched for and excluded many proposed new particles up to masses close to 1 TeV, there are many scenarios that are difficult to address at a hadron collider. This talk will review a number of these scenarios and present the expectations for searches at an electron-positron collider such as the International Linear Collider. The cases discussed include the light Higgsino, the \stau~ slepton in the coannihilation region relevant to dark matter, as well as other SUSY signatures. The studies are based on the ILD concept at the ILC.
NLTT 41135: a field M-dwarf + brown dwarf eclipsing binary in a triple system, discovered by the MEarth observatory
Creators: name: Irwin, Jonathan
name: Buchhave, Lars
name: Berta, Zachory K.
name: Charbonneau, David
name: Latham, David W.
name: Burke, Christopher J.
name: Esquerdo, Gilbert A.
name: Everett, Mark E.
name: Holman, Matthew J.
name: Nutzman, Philip
name: Berlind, Perry
name: Calkins, Michael L.
name: Falco, Emilio E.
name: Winn, Joshua N.
name: Johnson, John A.
name: Gazak, J. Zachary
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of an eclipsing companion to NLTT 41135, a nearby M5 dwarf that was already known to have a wider, slightly more massive common proper motion companion, NLTT 41136, at 2.4 arcsec separation. Analysis of combined-light and radial velocity curves of the system indicates that NLTT 41135B is a 31-34 +/- 3 MJup brown dwarf (where the range depends on the unknown metallicity of the host star) on a circular orbit. The visual M-dwarf pair appears to be physically bound, so the system forms a hierarchical triple, with masses approximately in the ratio 8:6:1. The eclipses are grazing, preventing an unambiguous measurement of the secondary radius, but follow-up observations of the secondary eclipse (e.g. with the James Webb Space Telescope) could permit measurements of the surface brightness ratio between the two objects, and thus place constraints on models of brown dwarfs.
description: 15 pages, 6 figures, 10 tables, emulateapj format. Accepted for publication in ApJ
A dichotomy between uniform distributions of the Stern-Brocot and the Farey sequence
Creators: name: Kesseböhmer, Marc
name: Stratmann, Bernd O.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 10K05, 11B57

description: We employ infinite ergodic theory to show that the even Stern-Brocot sequence and the Farey sequence are uniformly distributed mod 1 with respect to certain canonical weightings. As a corollary we derive the precise asymptotic for the Lebesgue measure of continued fraction sum-level sets as well as connections to asymptotic behaviours of geometrically and arithmetically restricted Poincaré series. Moreover, we give relations of our main results to elementary observations for the Stern-Brocot tree.
description: 9 pages
High Fill-Out, Extreme Mass Ratio Overcontact Binary Systems. X. The new discovered binary XY Leonis Minoris
Creators: name: Qian, S. -B.
name: Liu, L.
name: Zhu, L. -Y.
name: He, J. -J.
name: Yang, Y. -G.
name: Bernasconi, L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The new discovered short-period close binary star, XY LMi, was monitored photometrically since 2006. It is shown that the light curves are typical EW-type and show complete eclipses with an eclipse duration of about 80 minutes. By analyzing the complete B, V, R, and I light curves with the 2003 version of the W-D code, photometric solutions were determined. It is discovered that XY LMi is a high fill-out, extreme mass ratio overcontact binary system with a mass ratio of q=0.148 and a fill-out factor of f=74.1%, suggesting that it is on the late evolutionary stage of late-type tidal-locked binary stars. As observed in other overcontact binary stars, evidence for the presence of two dark spots on both components are given. Based on our 19 epoches of eclipse times, it is found that the orbital period of the overcontact binary is decreasing continuously at a rate of dP/dt=-1.67\times10^{-7}\,days/year, which may be caused by the mass transfer from the primary to the secondary or/and angular momentum loss via magnetic stellar wind. The decrease of the orbital period may result in the increase of the fill-out, and finally, it will evolve into a single rapid-rotation star when the fluid surface reaching the outer critical Roche Lobe.
description: 19 pages, 4 figures, 9 tables
Welcome to the machine: Classification of gamma-ray sources with neural networks
Creators: name: Manconi, Silvia
Publisher: name: Zenodo
Year: 2022

description: Seminar (30 min) given at the University of Turin (Astroparticle Journal Club)
description: {"references": ["https://arxiv.org/abs/2112.01403", "https://arxiv.org/abs/2012.05251"]}
Gestão de acervos audiovisuais em repositórios (slides)
Creators: name: Santos, Francisco Edvander Pires
Publisher: name: Zenodo
Year: 2019
Subjects: Repositório audiovisual
DSpace
Decupagem
Gestão da informação
Audiovisual repository
Audiovisual description
Information management

description: Apresentação desenvolvida para o 2º Seminário de Pesquisa em Ciência da Informação, realizado no dia 08 de março de 2019, promovido pelo Programa de Pós-Graduação em Ciência da Informação da Universidade Federal do Ceará (PPGCI/UFC), com o tema 'Ciência da Informação: diálogos e interlocuções'.
First Earth-based Detection of a Superbolide on Jupiter
Creators: name: Hueso, R.
name: Wesley, A.
name: Go, C.
name: Perez-Hoyos, S.
name: Wong, M. H.
name: Fletcher, L. N.
name: Sanchez-Lavega, A.
name: Boslough, M. B. E.
name: de Pater, I.
name: Orton, G. S.
name: Simon-Miller, A. A.
name: Djorgovski, S. G.
name: Edwards, M. L.
name: Hammel, H. B.
name: Clarke, J. T.
name: Noll, K. S.
name: Yanamandra-Fisher, P. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Cosmic collisions on planets cause detectable optical flashes that range from terrestrial shooting stars to bright fireballs. On June 3, 2010 a bolide in Jupiter's atmosphere was simultaneously observed from the Earth by two amateur astronomers observing Jupiter in red and blue wavelengths. The bolide appeared as a flash of 2 s duration in video recording data of the planet. The analysis of the light curve of the observations results in an estimated energy of the impact of 0.9-4.0x10^{15} J which corresponds to a colliding body of 8-13 m diameter assuming a mean density of 2 g cm^{-3}. Images acquired a few days later by the Hubble Space Telescope and other large ground-based facilities did not show any signature of aerosol debris, temperature or chemical composition anomaly, confirming that the body was small and destroyed in Jupiter's upper atmosphere. Several collisions of this size may happen on Jupiter on a yearly basis. A systematic study of the impact rate and size of these bolides can enable an empirical determination of the flux of meteoroids in Jupiter with implications for the populations of small bodies in the outer Solar System and may allow a better quantification of the threat of impacting bodies to Earth. The serendipitous recording of this optical flash opens a new window in the observation of Jupiter with small telescopes.
Dynamics of Void and its Shape in Redshift Space
Creators: name: Maeda, Kei-ichi
name: Sakai, Nobuyuki
name: Triay, Roland
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the dynamics of a single spherical void embedded in a Friedmann-Lemaître universe, and analyze the void shape in the redshift space. We find that the void in the redshift space appears as an ellipse shape elongated in the direction of the line of sight (i.e., an opposite deformation to the Kaiser effect). Applying this result to observed void candidates at the redshift z~1-2, it may provide us with a new method to evaluate the cosmological parameters, in particular the value of a cosmological constant.
description: 19 pages, 11 figures
kukurydza con miel - archive
Creators: name: Jasiu
name: Jasiu
Publisher: name: Zenodo
Year: 2021
Subjects: subject: http://eurovoc.europa.eu/5269
subject: http://eurovoc.europa.eu/5338

description: Research Object kukurydza con miel - archive
description: Research Object in rohub2020: https://w3id.org/ro-id/0981762f-52a2-496c-bd03-4c57467a2d30
title: The Prevalence of Burnout in Saudi Arabia Dental Hygienists
Creators: name: Aldayel, Nouf Hamad
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 2023

description: Purpose: The purpose of this pilot study was to assess the prevalence of burnout in Saudi Arabian dental hygienists and identify risk factors associated with burnout. Methods: A descriptive survey design using the Copenhagen Burnout Inventory (CBI) assessed burnout among a convenience sample of n=123 Saudi dental hygienists. The survey was disseminated electronically to 1,000 Saudi Arabian dental hygienists. The CBI measures three subscales: personal, work-related, and client/patient-related burnout on a five-point Likert-type scale. The survey also included six demographic questions, two Likert-type, one “yes/no,” and one openended question, related to burnout. Descriptive statistics, one-way between subject’s ANOVA, independent samples t-test, and chi-square test were used to analyze the data. Results: One hundred and twenty-three Saudi Arabian dental hygienists completed the survey with a 12% response rate. Participants indicated overall moderate burnout (M=53.54), with personal (M=60.84) and work-related (M=54.70) burnout also in the moderate range. Participants working in government facilities had significantly higher personal (p < .001), work-related (p < .001), and client/patient-related (p = .026) burnout than those in the “Other” practice category. Female Saudi hygienists had significantly higher overall (p = .007), personal (p < .001), and work-related (p = .008) burnout scores compared to male Saudi dental hygienists. Conclusions: Results from this study suggest Saudi Arabian dental hygienists display moderate levels of workplace burnout, with the highest prevalence rate in personal burnout. Findings underscore the need for further research with an expanded sample size to identify stressors that lead to burnout and identify mitigation strategies to promote a healthier working climate for practicing Saudi dental hygienists.
Quiescent Superhumps Detected in the Dwarf Nova V344 Lyrae by Kepler
Creators: name: Still, Martin
name: Howell, Steve B.
name: Wood, Matt A.
name: Cannizzo, John K.
name: Smale, Alan P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The timing capabilities and sensitivity of Kepler, NASA's observatory to find Earth-sized planets within the habitable zone of stars, are well matched to the timescales and amplitudes of accretion disk variability in cataclysmic variables. This instrumental combination provides an unprecedented opportunity to test and refine stellar accretion paradigms with high-precision, uniform data, containing none of the diurnal or season gaps that limit ground-based observations. We present a 3-month, 1 minute cadence Kepler light curve of V344 Lyr, a faint, little-studied dwarf nova within the Kepler field. The light curve samples V344 Lyr during five full normal outbursts and one superoutburst. Surprisingly, the superhumps found during superoutburst continue to be detected during the following quiescent state and normal outburst. The fractional excess of superhump period over the presumed orbital period suggests a relatively high binary mass ratio in a system where the radius of the accretion disk must vary by less than 2% in order to maintain tidal precession throughout the extended episode of superhumping. Disk radius is less restricted if the quiescent signal identified tentatively as the orbital period is a negative superhump, generated by a retrograde-precessing accretion disk, tilted with respect to the binary orbital plane.
description: ApJL, in press, 5 pages, 3 figures
Behavior of Quantum Correlations under Local Noise
Creators: name: Streltsov, Alexander
name: Kampermann, Hermann
name: Bruß, Dagmar
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We characterize the behavior of quantum correlations under the influence of local noisy channels. Intuition suggests that such noise should be detrimental for quantumness. When considering qubit systems, we show for which channel this is indeed the case: the amount of quantum correlations can only decrease under the action of unital channels. However, non-unital channels (e.g. such as dissipation) can create quantum correlations for some initially classical state. Furthermore, for higher-dimensional systems even unital channels may increase the amount of quantum correlations. Thus, counterintuitively, local decoherence can generate quantum correlations.
description: 5 pages, 1 figure
Tactile gating in a reaching and grasping task reveals sensory and motor interactions affecting tactile sensitivity of the moving upper limb
Creators: name: Colino, Francisco
Publisher: name: University of British Columbia
Year: 2015

description: A multitude of events bombard our sensory systems at every moment of our lives. Thus, it is important for the sensory cortex to gate unimportant events. Tactile suppression is a well-known phenomenon defined as a reduced ability to detect tactile events on the skin before and during movement. Previous experiments (e.g., Chapman et al., 1987) found detection rates decrease just prior to and during finger abduction, and decrease according to the proximity of the tactile event to the moving effector. However, there is no consensus regarding the cause of tactile gating. Previous work debated between centrally- vs. peripherally generated mechanisms causing tactile gating under different circumstances resulting in a reasonably good understanding of contributing neural networks. The present dissertation examined how tactile detection changes during a reach to grasp task. In a series of experiments, participants were asked to reach and grasp a cylinder. Tactors were attached to the index finger, the fifth digit and the forearm of both the right and left arm and vibrated at various epochs relative to an imperative “go” tone. These stimulation times were then renormalized post-hoc relative to movement onset. Movement performance was recorded using an infrared camera system tracking infrared emitting diodes. Results showed that detection rates at the forearm decreased before movement onset; whereas at the right index finger, right fifth digit and at the left index finger, left fifth digit and forearm sites no such reduction was observed (participants only moved the right upper limb). These results indicate that the task affects gating dynamics in a temporally- and contextually-dependent manner and implies that feedforward motor planning processes can modify sensory signals shifting the response criterion so that the likeliest response is negative.
Antioxidant assay 2: Catalase (CAT)
Creators: name: Ntatsi, Georgia
name: Savvas, Dimitrios
Publisher: name: Zenodo
Year: 2018

description: Catalase (CAT) is a tetrameric enzyme which dismutates H2O2 into water and oxygen. Catalases, mainly localised in the peroxisomes, are classified into a) those involved in the removal of H2O2 produced during photorespiration, b) those involved in lignification and c) those located mainly in glyoxysomes (highly abundant in seeds and young plants) (Ahmad et al., 2010).
description: The information presented here has been thoroughly researched and is believed to be accurate and correct. However, the authors cannot be held legally responsible for any errors. There are no warranties, expressed or implied, made with respect to the information provided. The authors will not be liable for any direct, indirect, special, incidental or consequential damages arising out of the use or inability to use the content of this publication.
Forward-backward elliptic anisotropy correlation in parton cascade
Creators: name: Han, L. X.
name: Ma, G. L.
name: Ma, Y. G.
name: Cai, X. Z.
name: Chen, J. H.
name: Zhang, S.
name: Zhong, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A potential experimental probe, forward-backward elliptic anisotropy correlation ($C_{FB} $), has been proposed by Liao and Koch to distinguish the jet and true elliptic flow contribution to the measured elliptic flow ($v_2$) in relativistic heavy-ion collisions. Jet and flow fluctuation contribution to elliptic flow is investigated within the framework of a multi-phase transport model using the $C_{FB} $ probe. We found that the $C_{FB} $ correlation is remarkably different and is about two times of that proposed by Liao and Koch. It originates from the correlation between fluctuation of forward and backward elliptic flow at low transverse momentum, which is mainly due to the initial correlation between fluctuation of forward and backward eccentricity. This results in an amendment of the $C_{FB}$ by a term related to the correlation between fluctuation of forward and backward elliptic flow. Our results suggest that a suitable rapidity gap for $C_{FB} $ correlation studies should be around $\pm$ 3.5.
description: 4 pages, 3 figures
Dispersion and damping of two-dimensional dust acoustic waves: Theory and Simulation
Creators: name: Upadhyaya, Nitin
name: Miskovic, Z. L.
name: Hou, L. -J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A two-dimensional generalized hydrodynamics (GH) model is developed to study the full spectrum of both longitudinal and transverse dust acoustic waves (DAW) in strongly coupled complex (dusty) plasmas, with memory-function-formalism being implemented to enforce high-frequency sum rules. Results are compared with earlier theories (such as quasi-localized charge approximation and its extended version) and with a self-consistent Brownian dynamics simulation. It is found that the GH approach provides good account, not only for dispersion relations, but also for damping rates of the DAW modes in a wide range of coupling strengths, an issue hitherto not fully addressed for dusty plasmas.
description: 28 pages, 13 figures
GPU-based fast gamma index calcuation
Creators: name: Gu, Xuejun
name: Jia, Xun
name: Jiang, Steve B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: The gamma-index dose comparison tool has been widely used to compare dose distributions in cancer radiotherapy. The accurate calculation of gamma-index requires an exhaustive search of the closest Euclidean distance in the high-resolution dose-distance space. This is a computational intensive task when dealing with 3D dose distributions. In this work, we combine a geometric method with a radial pre-sorting technique , and implement them on computer graphics processing units (GPUs). The developed GPU-based gamma-index computational tool is evaluated on eight pairs of IMRT dose distributions. The GPU implementation achieved 20x~30x speedup factor compared to CPU implementation and gamma-index calculations can be finished within a few seconds for all 3D testing cases. We further investigated the effect of various factors on both CPU and GPU computation time. The strategy of pre-sorting voxels based on their dose difference values speed up the GPU calculation by about 2-4 times. For n-dimensional dose distributions, gamma-index calculation time on CPU is proportional to the summation of gamma^n over all voxels, while that on GPU is effected by gamma^n distributions and is approximately proportional to the gamma^n summation over all voxels. We found increasing dose distributions resolution leads to quadratic increase of computation time on CPU, while less-than-quadratic increase on GPU. The values of dose difference (DD) and distance-to-agreement (DTA) criteria also have their impact on gamma-index calculation time.
description: 13 pages, 2 figures, and 3 tables
More lightning in the hand : a case study of the security vulnerabilities of the Osoyoos Port of Entry at the Canada-US Boundary Line
Creators: name: McCroy, Amy J.
Publisher: name: University of British Columbia
Year: 2015

description: The purpose of my research was to find answers to the principal research question: “What are the security vulnerabilities of the Osoyoos port of entry, particularly in relation to human trafficking/smuggling and terrorist incursions?” My research sample included eight security experts, specifically, six participants and two collaborators from the local security community in the South Okanagan Valley, British Columbia. The methodology used in my research was a single case study with a two-step approach and an emphasis on qualitative inquiry. Data analysis involved ‘theoretical’ thematic analysis method using three theories. The historical overview provides a historical analysis of border security (and associated security practices and technologies), the Canada-US border, and the Osoyoos port of entry. It also discusses Canadian border security and the intervention of neo-liberalism, the ranking of transnational security threats, Canada’s strategic tradition, and the implications of the changing global threat environment for Canadian national security. Findings reveal that the main security vulnerabilities at the Canada-US border in the South Okanagan region are a robust criminal infrastructure and an under-resourced security community. The findings also reveal that there are many factors that inform and influence Canadian border security policy. Implications for national and public security include the development of high-quality local intelligence, vigilance in analyzing the spatial trends of crime and terror groups, “more predictable and cost-effective screening processes at ports of entry,” and realistic assessments of the resources necessary for a layered security strategy. Recommendations point to the development of high-quality intelligence products, the reinstatement of border resources, and greater specialization of border security personnel.