cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Worry about Crime among European Citizens:  Model-Assisted Measurement using European Social Survey Data
Creators: name: Jackson, Jonathan
name: Kuha, Jouni
Publisher: name: European Survey Research Association
Year: 2014
Subjects: fear of crime; social-indicators; cross-national research; survey design; emotions

description: This paper examines new measures of fear of crime fielded in the European Social Survey. We use an analytical approach that combines statistical latent class modelling with pragmatic choices for the final classification of the responses into a six-category measure. We undertake an informal examination of the latent class solution in individual countries, and we show that frequency and impact indicators are reliable cross-national indicators (with configural or construct validity) of the experience of negative emotions about crime in people’s lives. Our subsequent estimation of levels of worry in 23 European countries sheds important light on the psychological patterning of worry about crime across Europe.
description: Survey Research Methods, Vol 8, No 2 (2014)
A Borel transform method for locating singularities of Taylor and Fourier series
Creators: name: Pauls, W.
name: Frisch, U.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Given a Taylor series with a finite radius of convergence, its Borel transform defines an entire function. A theorem of Pólya relates the large d istance behavior of the Borel transform in different directions to singularities of the original function. With the help of the new asymptotic interpolation method of van der Hoeven, we show that from the knowledge of a large number of Taylor coefficients we can identify precisely the location of such singularities, as well as their type when they are isolated. There is no risk of getting artefacts with this method, which also gives us access to some of the singularities beyond the convergence disk. The method can also be applied to Fourier series of analytic periodic functions and is here tested on various instances constructed from solutions to the Burgers equation. Large precision on scaling exponents (up to twenty accurate digits) can be achieved.
description: 14 pages, 5 figures
The Spectral Lag of GRB060505: A Likely Member of the Long Duration Class
Creators: name: McBreen, S.
name: Foley, S.
name: Watson, D.
name: Hanlon, L.
name: Malesani, D.
name: Fynbo, J. P. U.
name: Kann, D. A.
name: Gehrels, N.
name: McGlynn, S.
name: Palmer, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Two long gamma-ray bursts, GRB 060505 and GRB 060614, occurred in nearby galaxies at redshifts of 0.089 and 0.125 respectively. Due to their proximity and durations, deep follow-up campaigns to search for supernovae (SNe) were initiated. However none were found in either case, to limits more than two orders of magnitude fainter than the prototypical GRB-associated SN, 1998bw. It was suggested that the bursts, in spite of their durations (4 and 102 s), belonged to the population of short GRBs which has been shown to be unrelated to SNe. In the case of GRB 060614 this argument was based on a number of indicators, including the negligible spectral lag, which is consistent with that of short bursts. GRB 060505 has a shorter duration, but no spectral lag was measured. We present the spectral lag measurements of GRB 060505 using Suzakus Wide Area Monitor and the Swift Burst Alert Telescope. We find that the lag is 0.36+/- 0.05 s, inconsistent with the lags of short bursts and consistent with the properties of long bursts and SN-GRBs. These results support the association of GRB 060505 with other low-luminosity GRBs also found in star-forming galaxies and indicates that at least some massive stars may die without bright SNe.
description: Accepted by ApJL, 5 pages, 3 Figures
Η εκμάθηση του ελληνικού λεξιλογίου από ξενόγλωσσους μαθητές και η περίπτωση της εκμάθησης λεξιλογίου από ρωσόφωνους μαθητές μέσω της πλατφόρμας Moodle
Creators: name: Πατσιόλα, Ιωάννα Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Moodle
Ρωσική γλώσσα
Δεύτερη/ ξένη γλώσσα
Russian language
Second/ foreign language

description: Σκοπός της παρούσας ερευνητικής εργασίας ήταν να εξετάσει την εκμάθηση του λεξιλογίου της ελληνικής ως δεύτερης ξένης γλώσσας από ρωσόφωνους μαθητές μέσα από τη χρήση της ηλεκτρονικής πλατφόρμας Moodle. Επιπλέον, στόχος ήταν να συγκρίνει τις επιδόσεις των μαθητών πριν και μετά τη χρήση της πλατφόρμας σε 13 λεξιλογικές δοκιμασίες. Στην έρευνα συμμετείχαν 12 ρωσόφωνοι μαθητές, οι οποίοι κλήθηκαν να συμπληρώσουν κάποιες λεξιλογικές δοκιμασίες μέσω της πλατφόρμας Moodle, μία φορά πριν τη διεξαγωγή του μαθήματος και μία ακόμη φορά μετά τη διεξαγωγή του μαθήματος. Τα αποτελέσματα της έρευνας έδειξαν ότι υπάρχει μια διαφορά ως προς την επίδοση των μαθητών πριν και μετά τη διεξαγωγή του μαθήματος μέσω της πλατφόρμας, με αυτήν να αυξάνεται έπειτα από τη διεξαγωγή και τη διδασκαλία του μαθήματος μέσω της πλατφόρμας. Ωστόσο, κρίνεται απαραίτητο η έρευνα να προβεί σε περαιτέρω μελέτες προκειμένου να συλλεχθεί ένα μεγαλύτερο δείγμα και να εξαχθούν τα κατάλληλα συμπεράσματα σχετικά με την επίδραση της πλατφόρμας Moodle στην επίδοση των μαθητών όταν πρόκειται για την εκμάθηση της ελληνικής ως δεύτερης/ ξένης γλώσσας.
description: The aim of this study was to examine the learning of Greek vocabulary as a second foreign language by Russian-speaking students through the use of the Moodle electronic platform. In addition, the aim was to compare students' performance before and after using the platform in 13 lexical tests. Twelve Russian-speaking pupils were interviewed, who were asked to complete some lexical tests through the Moodle platform once before the course and one more time after the course. The results of the survey showed that there is a difference in the pupils' performance before and after the course through the platform, increasing it after the course is taught and taught through the platform. However, research is needed to conduct further studies to collect a larger sample and to draw appropriate conclusions on the impact of the Moodle platform on student performance when it comes to learning Greek as a second / foreign language.
Additional file 1 of Bone marrow mesenchymal stem cell-derived exosomes promote plasminogen activator inhibitor 1 expression in vascular cells in the local microenvironment during rabbit osteonecrosis of the femoral head
Creators: name: Li, Lu
name: Wang, Yikai
name: Yu, Xiaobing
name: Bao, Yongming
name: An, Lijia
name: Wei, Xiaowei
name: Yu, Weiting
name: Liu, Baoyi
name: Li, Junlei
name: Yang, Jiahui
name: Xia, Yan
name: Liu, Ge
name: Cao, Fang
name: Zhang, Xiuzhi
name: Zhao, Dewei
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Virology

description: Additional file 1: Supplementary data. Characterization of rabbit cells. MicroRNA sequencing. Western blotting. Table S1. Primers used for RTqPCR. Table S2. Synthesized miR-133b-3p mimics and inhibitors.
Optical Indistinguishability via Twinning Fields
Creators: name: McCaul, Gerard
name: King, Alexander F.
name: Bondar, Denys I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Here we introduce the concept of the twinning field -- a driving electromagnetic pulse that induces an identical optical response from two distinct materials. We show that for pairs of generic many-body systems, a twinning field which renders the systems \emph{optically indistinguishable} always exists. The conditions under which this field is unique are derived, and this analysis is supplemented by numerical calculations of twinning fields for the Fermi-Hubbard model. The universal existence of twinning fields may lead to new research directions in non-linear optics, materials science, and quantum technologies.
description: 6 pages, 4 figures
Evaluating the impact of response enhancement methods on the risk of nonresponse bias and survey costs
Creators: name: Roberts, Caroline
name: Vandenplas, Caroline
name: Ernst Stähli, Michèle
Publisher: name: European Survey Research Association
Year: 2014
Subjects: R-indicator; European Social Survey; response rates; coefficient of variation

description: The pursuit of high response rates to minimise the threat of nonresponse bias continues to dominate decisions about resource allocation in survey research. Yet a growing body of research has begun to question this practice. In this study, we use previously unavailable data from a new sampling frame based on population registers to assess the value of different methods designed to increase response rates on the European Social Survey in Switzerland. Using sampling data provides information about both respondents and nonrespondents, making it possible to examine how changes in response rates resulting from the use of different fieldwork methods relate to changes in the composition and representativeness of the responding sample. We compute an R-indicator to assess representativity with respect to the sampling register variables, and find little improvement in the sample composition as response rates increase. We then examine the impact of response rate increases on the risk of nonresponse bias based on Maximal Absolute Bias (MAB), and coefficients of variation between subgroup response rates, alongside the associated costs of different types of fieldwork effort. The results show that increases in response rate help to reduce MAB, while only small but important improvements to sample representativity are gained by varying the type of effort. These findings lend further support to research that has called into question the value of extensive investment in procedures aimed at reaching response rate targets and the need for more tailored fieldwork strategies aimed both at reducing survey costs and minimising the risk of bias.
description: Survey Research Methods, Vol 8, No 2 (2014)
The Halpha, Hbeta and Hdelta lines in the spectrum RR Tauri
Creators: name: Kardopolov, V. I.
name: Kondratyeva, L. N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The results of spectroscopic study of Ae Herbig star RR Tau are reported. The observations were carried out with a moderate resolution. In accordance with the presented data the Halpha line exhibits a double-peaked emission profile. The blue component is weaker than or equal to the red one. Variations of the Halpha equivalent width by a factor of 4 - 5 were found. The structure of this line also varies. On JD 2447148 a red absorption reversal of the Halpha profile was observed. The Hbeta spectral line exhibited both emission and absorption. On JD 2449664 the single-peak emission shifted to the short wavelength range of the underlying absorption line and the red wing of the stellar line looked like a red-shifted absorption component of medium strength. The Hdelta line was in absorption.
description: 5 pages 3 figures
Langevin dynamics of the deconfinement transition for pure gauge theory
Creators: name: Mizher, Ana Júlia
name: Fraga, Eduardo S.
name: Krein, Gastão
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the effects of dissipation in the deconfinement transition for pure SU(2) and SU(3) gauge theories. Using an effective theory for the order parameter, we study its Langevin evolution numerically. Noise effects are included for the case of SU(2). We find that both dissipation and noise have dramatic effects on the spinodal decomposition of the order parameter and delay considerably its thermalization. For SU(3) the effects of dissipation are even larger than for SU(2).
description: 4 pages, 3 figures. To appear in the proceedings of I Latin American Workshop on High Energy Phenomenology (LAWHEP 2005), Porto Alegre, Brazil, 1-3 Dec 2005. v2: minor corrections
Transcription of a story about Verdena's cat
Creators: name: Parker, Verdena
name: Newbold, Lindsey
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio files VP-240208-01 and VP-240208-02: Transcription of a story about Verdena's cat (file VP-111107-02), from the beginning of the file to 1:18 (VP-240208-01) and from 1:18 to the end of the story (VP-240208-02).
Non-gray rotating stellar models and the evolutionary history of the Orion Nebular Cluster
Creators: name: Landin, Natália R.
name: Ventura, Paolo
name: D'Antona, Francesca
name: Mendes, Luiz T. S.
name: Vaz, Luiz P. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Rotational evolution in the pre-main sequence (PMS) is described with new sets of PMS evolutionary tracks including rotation, non-gray boundary conditions (BCs) and either low (LCE) or high convection efficiency (HCE). Using observational data and our theoretical predictions, we aim at constraining 1) the differences obtained for the rotational evolution of stars within the ONC by means of these different sets of models; 2) the initial angular momentum of low mass stars, by means of their templates in the ONC. We discuss the reliability of current stellar models for the PMS. While the 2D radiation hydrodynamic simulations predict HCE in PMS, semi-empirical calibrations either seem to require that convection is less efficient in PMS than in the following MS phase or are still contradictory. We derive stellar masses and ages for the ONC by using both LCE and HCE. The resulting mass distribution for the bulk of the ONC population is in the range 0.2$-$0.3 {\msun} for our non-gray models and in the range 0.1$-$0.3{\msun} for models having gray BCs. In agreement with Herbst et al. (2002) we find that a large percentage ($\sim$70%) of low-mass stars (M\simlt 0.5{\msun} for LCE; M\simlt0.35{\msun} for HCE) in the ONC appears to be fast rotators (P$
description: 17 pages, 11 figures
Local illumination models from surface geometry microform
Creators: name: Huo, Gang
Publisher: name: University of British Columbia
Year: 2008

description: In this thesis, we propose a model to simulate the small-scale geometry of cloth and develop a method to derive the BRDF (Bidirectional Reflectance-Distribution Function) of this model from the underlying surface geometry, taking into account the blocking and shadowing phenomena at the small scale. Sample images of cloth generated with this BRDF look highly realistic. As a starting point to the inter-reflection problem, we examine the secondary reflection phenomena on the surface model made of parallel cylinders (as proposed by Poulin and Fournier) and the model proposed here for cloth. Two solutions are presented sampling through raytracing and an analytical approximation. The results convincingly indicate that the intensity from multiply reflected light could be substantial for bumped surfaces with low specular exponent n. Therefore inter-reflection should be accounted for in the lighting model for these surfaces. Generated cloth images including secondary reflection effects exhibit a higher degree of realism. The computation of secondary reflection effects is however quite expensive. The techniques presented can be extended to extract macroscopic reflection behaviour from the knowledge of the microscopic geometric structure.
Dynamical coherent states and physical solutions of quantum cosmological bounces
Creators: name: Bojowald, Martin
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A new model is studied which describes the quantum behavior of transitions through an isotropic quantum cosmological bounce in loop quantum cosmology sourced by a free and massless scalar field. As an exactly solvable model even at the quantum level, it illustrates properties of dynamical coherent states and provides the basis for a systematic perturbation theory of loop quantum gravity. The detailed analysis is remarkably different from what is known for harmonic oscillator coherent states. Results are evaluated with regard to their implications in cosmology, including a demonstration that in general quantum fluctuations before and after the bounce are unrelated. Thus, even within this solvable model the condition of classicality at late times does not imply classicality at early times before the bounce without further assumptions. Nevertheless, the quantum state does evolve deterministically through the bounce.
description: 30 pages, 3 figures
Note on Varying Speed of Light Cosmologies
Creators: name: Ellis, George F R
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The various requirements on a consistent varying speed of light (`VSL') theory are surveyed, giving a short check-list of issues that should be satisfactorily handled by such theories.
description: 6 pages; to appear in the GRG Journal
A Geometric Nonlinear Stochastic Filter for Simultaneous Localization and Mapping
Creators: name: Hashim, Hashim A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Robotics (cs.RO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Simultaneous Localization and Mapping (SLAM) is one of the key robotics tasks as it tackles simultaneous mapping of the unknown environment defined by multiple landmark positions and localization of the unknown pose (i.e., attitude and position) of the robot in three-dimensional (3D) space. The true SLAM problem is modeled on the Lie group of $\mathbb{SLAM}_{n}\left(3\right)$, and its true dynamics rely on angular and translational velocities. This paper proposes a novel geometric nonlinear stochastic estimator algorithm for SLAM on $\mathbb{SLAM}_{n}\left(3\right)$ that precisely mimics the nonlinear motion dynamics of the true SLAM problem. Unlike existing solutions, the proposed stochastic filter takes into account unknown constant bias and noise attached to the velocity measurements. The proposed nonlinear stochastic estimator on manifold is guaranteed to produce good results provided with the measurements of angular velocities, translational velocities, landmarks, and inertial measurement unit (IMU). Simulation and experimental results reflect the ability of the proposed filter to successfully estimate the six-degrees-of-freedom (6 DoF) robot's pose and landmark positions. Keywords: Simultaneous Localization and Mapping, nonlinear stochastic observer for SLAM, stochastic differential equations, pose estimator, position, attitude, Brownian motion process, inertial measurement unit, landmarks, features, SDE, SO(3), SE(3), SLAM.
Long Range Percolation Mixing Time
Creators: name: Benjamini, Itai
name: Berger, Noam
name: Yadin, Ariel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We provide an estimate, sharp up to poly-logarithmic factors, of the asymptotically almost sure mixing time of the graph created by long-range percolation on the cycle of length N (Z/NZ). While it is known that the almost sure diameter drops from linear to poly-logarithmic as the exponent s decreases below 2, the almost sure mixing time drops from N^2 only to N^(s-1) (up to poly-logarithmic factors).
description: Proof of Proposition 2.1 corrected
Multipole optimization of light focusing by silicon nanosphere structures
Creators: name: Ustimenko, Nikita A.
name: Baryshnikova, Kseniia V.
name: Melnikov, Roman V.
name: Kornovan, Danil F.
name: Ulyantsev, Vladimir I.
name: Chichkov, Boris N.
name: Evlyukhin, Andrey B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate the applicability of the coupled multipole model and its modification in the framework of the zero-order Born approximation for modeling of light focusing by finite-size nanostructures of silicon nanospheres, supporting electric and magnetic dipole and quadrupole resonances. The results based on the analytical approximations are verified by comparison with the numerical simulations performed by the T-matrix method. Using the evolutionary algorithm optimization, we apply the developed approach to design the silicon nanosphere metalenses with predefined focusing properties. The obtained results demonstrate a strong optimization potential of the suggested calculation scheme for engineering ultra-thin metalenses.
Deformable models using displacement constraints
Creators: name: Palazzi, Larry
Publisher: name: University of British Columbia
Year: 2008

description: This thesis explores a variation of a technique, called "displacement constraints" [19], used for creating and animating deformable objects. It is a constraint-based technique that uncouples the constraint forces from the external forces acting on an object, and solves a system of geometric constraints at each time step using an iterative technique. Displacement Constraints does not attempt to model real physics, but is a simple, efficient technique that offers interactive speeds for the modeling and animation of deformable objects. The inability to respond globally to an external force is an inherent property of many discrete/nodal formulations. A global response is sometimes only obtained through the propagation of localized forces over multiple timesteps. Energy minimization techniques may also achieve certain global effects, but at a higher computational cost. We introduce a multilevel approach to force distribution to improve the global response of a deformable object. External forces acting on an object are propagated through the different levels of the hierarchical representation of the object. Animators can set the distribution of forces at each level, thus controlling an object's local and global behaviour.
Normal-Superfluid Interface Scattering For Polarized Fermion Gases
Creators: name: Van Schaeybroeck, Bert
name: Lazarides, Achilleas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We argue that, for the recent experiments with imbalanced fermion gases, a temperature difference may occur between the normal (N) and the gapped superfluid (SF) phase. Using the mean-field formalism, we study particle scattering off the N-SF interface from the deep BCS to the unitary regime. We show that the thermal conductivity across the interface drops exponentially fast with increasing $h/k_B T$, where $h$ is the chemical potential imbalance. This implies a blocking of thermal equilibration between the N and the SF phase. We also provide a possible mechanism for the creation of gap oscillations (FFLO-like states) as seen in recent studies on these systems.
description: 4 pages, 3 figures
Complex modes in optical fibers and silicon waveguides
Creators: name: Zhang, Nan
name: Lu, Ya Yan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: At a fixed frequency, a general wave field in an open optical waveguide is a sum of finite number of guided modes and an integral of radiation modes. Most studies on open lossless dielectric waveguides are concerned with regular guided modes which are confined around the waveguide core, have a real propagation constant, and propagate along the waveguide axis without attenuation. However, there may be guided modes with a complex propagation constant even though the waveguide consists of lossless isotropic dielectric materials, and they are the so-called complex modes. The complex modes are proper modes confined around the waveguide core, and are different from the leaky modes which have divergent wave fields in the transverse plane. For waveguides with discontinuities and defects, the complex modes can be excited and must be included in eigenmode expansions. However, existing studies on complex modes in open lossless dielectric waveguides are very limited. In this Letter, we consider circular fibers and silicon waveguides, study the formation mechanism of complex modes, and calculate the dispersion relations for several complex modes in each waveguide. For circular fibers, we also determine the minimum refractive-index ratio for the existence of complex modes. Our study fills a gap in optical waveguide theory and provides a basis for realizing potential applications of complex modes.
The effect of different survey designs on nonresponse in surveys among non-Western minorities in The Netherlands.
Creators: name: Kappelhof, Johannes
Publisher: name: European Survey Research Association
Year: 2014
Subjects: survey design choices; nonresponse bias; non-Western minorities; representativity; quality indicators

description: The present study investigates the impact of survey design choices on the representativity and nonresponse of eight sub-surveys conducted among non-Western minorities in The Netherlands. The surveys were part of a repeated, cross-sectional measurement conducted separately among each of the four largest non-Western minority groups. This study utilizes fieldwork outcomes in conjunction with the R-indicator and maximal absolute standardized bias to show the impact of survey design choices - such as the period and length of fieldwork, the use of bilingual interviewers, the number of face-to-face call attempts and a re-issue of nonresponding sampled persons - on the potential nonresponse bias. Partial R-indicators are used to detect which socio-demographic subgroups contribute the most to a nonrepresentative response, conditional on ethnic group and survey design. The results indicate that long fieldwork periods increase the potential for nonresponse bias among non-Western minorities due to moving and that the timing of fieldwork has an impact on the number of sampled persons who are unavailable during the fieldwork period. Furthermore, the use of bilingual interviewers is necessary to conduct a survey among Turkish and Moroccans due to language problems; otherwise the potential for nonresponse bias can be quite severe. Also, the use of a re-issue phase reduces the potential for nonresponse bias in surveys among non-Western minorities in The Netherlands. Finally, partial R-indicator analyses provide further insight on how future surveys can be improved in order to reduce the potential for nonresponse bias among each of the four non-Western minority groups.

Editor Note: The originally published version of this article has been replaced by a corrected version on 13/02/2015. The corrections concerned two numbers in Table 2.
description: Survey Research Methods, Vol 8, No 2 (2014)
Evaluating Multilingual Questionnaires: A Sociolinguistic Perspective
Creators: name: Pan, Yuling
name: Fond, Marissa
Publisher: name: European Survey Research Association
Year: 2014
Subjects: survey translation, translation evaluation, functional equivalence, sociolinguistics, multilingual questionnaire, measurement errors

description: This study aims to develop an assessment tool to evaluate multilingual questionnaires by categorizing the types of translation issues that can lead to measurement errors in cross-cultural surveys. Based on the results of two multilingual projects that cognitively pretested the 2010 U.S. Census questionnaire in five languages and the American Community Survey questionnaire in two languages, we developed a coding scheme guided by sociolinguistic approaches to language and culture to evaluate translated questionnaires by classifying translation issues. In this paper we discuss how the coding scheme is useful in the evaluation of multilingual questionnaires and how it could be integrated productively into the development of such questionnaires and the early rounds of translation. We also suggest feasible solutions to translation issues, to ensure translation quality and achieve not only semantic but functional equivalence across translations.
Keywords: survey translation
description: Survey Research Methods, Vol 8, No 3 (2014)
Search for resonant and nonresonant new phenomena in high-mass dilepton final states at $\sqrt{s} = $ 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search is presented for physics beyond the standard model (SM) using electron or muon pairs with high invariant mass. A data set of proton-proton collisions collected by the CMS experiment at the LHC at $\sqrt{s} =$ 13 TeV from 2016 to 2018 corresponding to a total integrated luminosity of up to 140 fb$^{-1}$ is analyzed. No significant deviation is observed with respect to the SM background expectations. Upper limits are presented on the ratio of the product of the production cross section and the branching fraction to dileptons of a new narrow resonance to that of the Z boson. These provide the most stringent lower limits to date on the masses for various spin-1 particles, spin-2 gravitons in the Randall--Sundrum model, as well as spin-1 mediators between the SM and dark matter particles. Lower limits on the ultraviolet cutoff parameter are set both for four-fermion contact interactions and for the Arkani-Hamed, Dimopoulos, and Dvali model with large extra dimensions. Lepton flavor universality is tested at the TeV scale for the first time by comparing the dimuon and dielectron mass spectra. No significant deviation from the SM expectation of unity is observed.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplementary figures, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-19-019 (CMS Public Pages)
A weighted Moser-Trudinger inequality and its relation to the Caffarelli-Kohn-Nirenberg inequalities in two space dimensions
Creators: name: Dolbeault, Jean
name: Esteban, Maria J.
name: Tarantello, Gabriella
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 26D10; 46E35; 58E35

description: We first prove a weighted inequality of Moser-Trudinger type depending on a parameter, in the two-dimensional Euclidean space. The inequality holds for radial functions if the parameter is larger than -1. Without symmetry assumption, it holds if and only if the parameter is in the interval (-1,0]. The inequality gives us some insight on the symmetry breaking phenomenon for the extremal functions of the Hardy-Sobolev inequality, as established by Caffarelli-Kohn-Nirenberg, in two space dimensions. In fact, for suitable sets of parameters (asymptotically sharp) we prove symmetry or symmetry breaking by means of a blow-up method. In this way, the weighted Moser-Trudinger inequality appears as a limit case of the Hardy-Sobolev inequality.
Transcription of "Panther and Bobcat"
Creators: name: Parker, Verdena
name: Newbold, Lindsey
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio files VP-230208-02 to VP-230208-09: Transcription of the story of Panther and Bobcat, file VP-200107-01, starting at 3:20 (VP-230208-02) with a follow-up question (VP-230208-03), then from 4:26 (VP-230208-04), 7:23 (VP-230208-05), 8:18 (VP-230208-06), 8:47 (VP-230208-07), 9:15 (VP-230208-08a/c), and 10:26 to the end of the story (VP-230208-09). The end of file VP-230208-08c includes stories about Grizzly Bear and Grasshopper, told in English.
The Effect of Answering in a Preferred Versus a Non-Preferred Survey Mode on Measurement
Creators: name: Smyth, Jolene
name: Olson, Kristen
name: Kasabian, Alian
Publisher: name: European Survey Research Association
Year: 2014
Subjects: mode preference; data quality; check-all; forced-choice; open-ended question; grid; mixed-mode

description: Previous research has shown that offering respondents their preferred mode can increase response rates, but the effect of doing so on how respondents process and answer survey questions (i.e., measurement) is unclear. In this paper, we evaluate whether changes in question format have different effects on data quality for those responding in their preferred mode than for those responding in a non-preferred mode for three question types (multiple answer, open-ended, and grid). Respondents were asked about their preferred mode in a 2008 survey and were recontacted in 2009. In the recontact survey, respondents were randomly assigned to one of two modes such that some responded in their preferred mode and others did not.  They were also randomly assigned to one of two questionnaire forms in which the format of individual questions was varied.  On the multiple answer and open-ended items, those who answered in a non-preferred mode seemed to take advantage of opportunities to satisfice when the question format allowed or encouraged it (e.g., selecting fewer items in the check-all than the forced-choice format and being more likely to skip the open-ended item when it had a larger answer box), while those who answered in a preferred mode did not.  There was no difference on a grid formatted item across those who did and did not respond by their preferred mode, but results indicate that a fully labeled grid reduced item missing rates vis-à-vis a grid with only column heading labels.  Results provide insight into the effect of tailoring to mode preference on commonly used questionnaire design features.
description: Survey Research Methods, Vol 8, No 3 (2014)
Discovery and Characterization of a Rare Magnetic Hybrid $β$ Cephei Slowly Pulsating B-type Star in an Eclipsing Binary in the Young Open Cluster NGC 6193
Creators: name: Stassun, Keivan G.
name: Torres, Guillermo
name: Johnston, Cole
name: Stevens, Daniel J.
name: Feliz, Dax L.
name: Kounkel, Marina
name: Bouma, Luke G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: As many as 10\% of OB-type stars have global magnetic fields, which is surprising given their internal structure is radiative near the surface. A direct probe of internal structure is pulsations, and some OB-type stars exhibit pressure modes ($β$ Cep pulsators) or gravity modes (slowly pulsating B-type stars; SPBs); a few rare cases of hybrid $β$ Cep/SPBs occupy a narrow instability strip in the H-R diagram. The most precise fundamental properties of stars are obtained from eclipsing binaries (EBs), and those in clusters with known ages and metallicities provide the most stringent constraints on theory. Here we report the discovery that HD 149834 in the $\sim$5 Myr cluster NGC 6193 is an EB comprising a hybrid $β$ Cep/SPB pulsator and a highly irradiated low-mass companion. We determine the masses, radii, and temperatures of both stars; the $\sim$9.7 M$_\odot$ primary resides in the instability strip where hybrid pulsations are theoretically predicted. The presence of both SPB and $β$ Cep pulsations indicates that the system has a near-solar metallicity, and is in the second half of the main-sequence lifetime. The radius of the $\sim$1.2 M$_\odot$ companion is consistent with theoretical pre-main-sequence isochrones at 5 Myr, but its temperature is much higher than expected, perhaps due to irradiation by the primary. The radius of the primary is larger than expected, unless its metallicity is super-solar. Finally, the light curve shows residual modulation consistent with the rotation of the primary, and Chandra observations reveal a flare, both of which suggest the presence of starspots and thus magnetism on the primary.
description: Accepted for publication in The Astrophysical Journal, 15 pages, 14 figures
Is Vague Valid? The Comparative Predictive Validity of Vague Quantifiers and Numeric Response Options
Creators: name: Al Baghal, Tarek
Publisher: name: European Survey Research Association
Year: 2014
Subjects: vague quantifiers; numeric responses; behavioral frequencies; predictive validity

description: A number of surveys, including many student surveys, rely on vague quantifiers to measure behaviors important in evaluation. The ability of vague quantifiers to provide valid information, particularly compared to other measures of behaviors, has been questioned both within both survey research generally and educational research specifically.  Still, there is a dearth of research on whether vague quantifiers or numeric responses perform better in regards to validity. This study examines measurement properties of frequency estimation questions through the assessment of predictive validity, which has also been shown to be important in examining measurement properties of competing question formats. Data from the National Survey of Student Engagement (NSSE), a preeminent survey of university students, is analyzed, in which two psychometrically tested benchmark scales, active and collaborative learning and student-faculty interaction, are measured through both vague quantifier and numeric responses. Predictive validity is assessed through correlations and regression models relating both vague and numeric scales to grades in school and two education experience satisfaction measures.  Results support the view that the predictive validity is higher for vague quantifier scales, and hence better measurement properties, compared to numeric responses. These results are discussed in light of other findings on measurement properties of vague quantifiers and numeric responses, suggesting that vague quantifiers may be a useful measurement tool for behavioral data, particularly when it is the relationship between variables that are of interest.
description: Survey Research Methods, Vol 8, No 3 (2014)
Ο ρόλος της τύχης στη φιλοσοφία του Αριστοτέλη (Φυσικά, Πολιτικά, Ηθικά Νικομάχεια)
Creators: name: Γούση, Ειρήνη Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: subject: Αριστοτέλης
subject: τύχη
subject: Φιλοσοφία
subject: Aristotle
subject: Fortune
subject: Philosophy
subject: FOS: Philosophy, ethics and religion

description: Σκοπός της μεταπτυχιακής αυτής εργασία ήταν η διερεύνηση της έννοιας της τύχης και του ρόλου που αυτή διαδραματίζει στη φιλοσοφία του Αριστοτέλη. Έπειτα από έρευνα στο σύνολο σχεδόν των αριστοτελικών κειμένων επιλέχθηκαν οι αναφορές που συναντούμε στα Φυσικά, στα Ηθικά Νικομαχεια και στα Πολιτικά. Τα χωρία αυτά αναλύθηκαν ως προς τη φιλοσοφική του διάσταση σε σχέση με τη θέση της τύχης στα πλαίσια της φιλοσοφικής θεωρίας του Σταγειρίτη. Σε κάθε κεφάλαιο αναλύονται τα χωρία ενός έργου ενώ γίνεται και προσπάθεια σύνδεσης των χωριών μεταξύ τους προκειμένου να εξαχθεί ένα συμπέρασμα για τη θέση της τύχης στο κάθε έργο. Στον επίλογο της εργασίας επιδιώκεται η διατύπωση ενός συνολικού συμπεράσματος για τη στάση του φιλοσόφου έναντι της τύχης και τη θέση αυτής στη φιλοσοφία του
description: The purpose of this postgraduate thesis was to explore the concept of luck and the role it plays in Aristotle's philosophy. After researching almost all Aristotelian texts, the references we find to Physics, Nicomachean ethics, and Politics have been selected. These passages were analyzed in terms of their philosophical dimension in relation to the place of fortune in Aristotle's philosophical theory. Each chapter analyzes the passages of a book while trying to link the passages together in order to reach a conclusion about the position of luck in each book. The epilogue of this work seeks to formulate an overall conclusion about the philosopher's attitude towards fortune and its place in his philosophy
Evaluation of weighting methods to integrate a top-up sample with an ongoing longitudinal sample
Creators: name: Watson, Nicole
Publisher: name: European Survey Research Association
Year: 2014
Subjects: cross-sectional weight, refreshment sample, combining estimates, pooling samples, HILDA

description: Long-running household-based panels tend to top-up (or refresh) their samples on occasions over the life of the panel. The motivation for adding such samples may range from concerns about overall sample size, lack of population coverage or inadequate samples of small target groups. In 2011, a general top-up sample was added to the Household, Income and Labour Dynamics in Australia (HILDA) Survey, a decade after the original sample was selected. This top-up sample added 2150 responding households to the main sample of 7400 responding households, representing a 29 per cent increase in the overall sample size. These top-up samples can be used to improve the cross-sectional and longitudinal weights. Drawing on the experience of other large household-based panels, this paper evaluates six options for integrating the two HILDA samples. The evaluation considers the variability in the weights and the root mean square error of a range of key estimates.
description: Survey Research Methods, Vol 8, No 3 (2014)
Supernova 2002ic: the collapse of a stripped-envelope, massive star in a dense medium ?
Creators: name: Benetti, S.
name: Cappellaro, E.
name: Turatto, M.
name: Taubenberger, S.
name: Harutyunyan, A.
name: Valenti, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We revisit the case of SN2002ic that recently revived the debate about the progenitors of SNeIa after the claim of the unprecedented presence of hydrogen lines over a diluted SNIa spectrum. As an alternative to the previous interpretation, we suggest that SN2002ic actually was a type Ic SN, the core collapse of a massive star which lost its hydrogen and helium envelope. In this scenario the observed interaction with a dense circumstellar material (CSM) is the predictable consequence of the intense mass-loss of the progenitor and/or of the presence of a gas rich environment. With this view we establish a link between energetic SNeIc and highly interacting SNeIIn and add some credits to the proposed association of some SNeIIn to GRBs.
description: Accepted for publication on ApJL
Shading and inverse shading from direct illumination
Creators: name: Poulin, Pierre
Publisher: name: University of British Columbia
Year: 2009

description: An understanding of light and its interaction with matter is essential to produce images. As the modeling of light sources, light transport and light reflection improves, it becomes possible to render images with increasing realism. The central motivation behind this thesis is to improve realism in computer graphics images by more accurate local shading models and to assist the user to obtain the desired lighting effects with these more complex models. The first part of the thesis addresses the problem of rendering surfaces illuminated by extended (linear and area) light sources. To compute the light reflected by a surface element in a given direction, one needs to determine the unoccluded regions (shadowing) of each light source and then to compute the light reflection (shading) from each of these regions. Traditionally, point light sources are distributed on the lights to approximate both the shadowing and the shading. Instead, an efficient analytical solution is developed for the shading. Shadowing from extended light sources is a fairly expensive process. To give some insights on the complexity of computing shadows, some properties of shadows and algorithms are presented. To reduce the cost of computing shadows from linear light sources, two acceleration schemes, extended from ray tracing, are introduced and evaluated. The second part of this thesis addresses the problem of achieving a desired shading effect by building up systems of constraints. This approach is called inverse shading. It allows a user to obtain a desired lighting effect by interacting directly with the scene model. An interactive modeling system has been built to study the introduction of rendering issues into the modeling process itself. Two rendering aspects are considered: shading and shadows. By specifying a highlight position and size, the unique direction of a directional light source as well as the surface glossiness are determined. Interactively moving this highlight on the surface redefines the light direction while changing its size redefines the surface glossiness. By manipulating shadow volumes (the volume within which a particular light cannot be completely seen), the light source definition and position can be modified. By assigning colours to various points in a 3D scene, information about the colour of a surface as well as other surface characteristics can be deduced. This relatively new concept of defining the causes by manipulating the effects is expected to have a major impact on the design of future computer graphics modeling systems. It begins a new family of tools for the design of more intuitive user interfaces.
Seven-frequency VLBI observations of the GHz-Peaked-Spectrum source OQ 208
Creators: name: Luo, Wen-Feng
name: Yang, Jun
name: Cui, Lang
name: Liu, Xiang
name: Shen, Zhi-Qiang
name: ;
name: Observatory, Urumqi
name: NAOC;
name: Observatory, Shanghai Astronomical
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present images of quasi-simultaneous VLBI observations of the GHz-Peaked-Spectrum radio source OQ 208 with the Very Long Baseline Array at 1.4, 1.7, 2.3, 5.0, 8.4, 15.4 GHz and the European VLBI Network at 6.7 GHz. The low frequency (1.4, 1.7 and 2.3 GHz) observations reveal a weak and extended steep-spectrum component at about 30 mas away in the position angle of $- 110^\circ$ which may be a remnant emission. The radio structure of OQ 208 consists of two mini-lobes at 5.0, 6.7, 8.4 and 15.4 GHz. Our spectral analysis further confirms that the southwest lobe undergoes free-free absorption and finds that the free-free absorption is stronger in the inner region. By fitting the 8.4 GHz images from 1994 to 2005, we obtain a separation speed of 0.031 $\pm$ 0.006 mas yr$^{-1}$ between the two mini-lobes. This indicates a jet proper motion of 0.105 $\pm$ 0.020 $c$ and a kinematic age of 219 $\pm$ 42 yr for the radio source.
description: 11 pages, 11 figures, accepted for publication in ChJAA