cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Variability Signatures of a Burst Process in Flaring Gamma-ray Blazars
Creators: name: Brill, Aryeh
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Blazars exhibit stochastic flux variability across the electromagnetic spectrum, often exhibiting heavy-tailed flux distributions, commonly modeled as lognormal. However, Tavecchio et al. (2020) and Adams et al. (2022) found that the high-energy gamma-ray flux distributions of several of the brightest flaring Fermi-LAT flat spectrum radio quasars (FSRQs) are well modeled by an even heavier-tailed distribution, which we show is the inverse gamma distribution. We propose an autoregressive inverse gamma variability model in which an inverse gamma flux distribution arises as a consequence of a shot-noise process. In this model, discrete bursts are individually unresolved and averaged over within time bins, as in the analysis of Fermi-LAT data. Stochastic variability on timescales longer than the time bin duration is modeled using first-order autoregressive structure. The flux distribution becomes approximately lognormal in the limiting case of many weak bursts. The fractional variability is predicted to decrease as the time bin duration increases. Using simulated light curves, we show that the proposed model is consistent with the typical gamma-ray variability properties of FSRQs and BL Lac objects. The model parameters can be physically interpreted as the average burst rate, the burst fluence, and the timescale of long-term stochastic fluctuations.
description: 26 pages, 7 figures, accepted for publication in the Astrophysical Journal
The role of intermediaries in the synchronization of pulse-coupled oscillators
Creators: name: García, Rodrigo A.
name: Rubido, Nicolás
name: Marti, Arturo C.
name: Cabeza, Cecilia
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: The role of intermediaries in the synchronization of small groups of light controlled oscillators (LCO) is addressed. A single LCO is a two-time-scale phase oscillator. When pulse-coupling two LCOs, the synchronization time decreases monotonously as the coupling strength increases, independent of the initial conditions and frequency detuning. In this work we study numerically the effects that a third LCO induces to the collective behavior of the system. We analyze the new system by dealing with directed heterogeneous couplings among the units. We report a novel and robust phenomenon, absent when coupling two LCOs, which consists of a discontinuous relationship between the synchronization time and coupling strength or initial conditions. The mechanism responsible for the appearance of such discontinuities is discussed.
description: 11 pages, 8 figures
Der Papst über die Beziehungen zwischen Finanzpolitik und sittlichen Werten
Creators: name: Pius XII., Papst
Publisher: name: Herder Korrespondenz
Year: 1970

description: Herder Korrespondenz, Bd. 3 Nr. 3 (1948): Herder Korrespondenz, Band 3, Heft 3
The emergence of molecular complexity in star forming regions as seen with ASAI
Creators: name: Lefloch, B.
name: Vastel, C.
name: Bianchi, E.
name: Bachiller, R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Large Program "Astrochemical Surveys At IRAM" (ASAI) investigates the emergence of molecular complexity along the different stages of the solar-type star formation process, by carrying out unbiased line surveys of a sample of ten template sources in the range 80-272 GHz with the IRAM 30m telescope. We present here an overview of the main results of the Large Program ASAI.
description: 6 pages, 4 figures; invited talk at the IRAM conference "Multi-line Diagnostics of the Interstellar Medium", Nice, April 2022; To be published in The European Physical Journal Web of Conferences
Use of multivariate measures of disability in health surveys.
Creators: name: Patrick, D L
name: Charlton, J R
name: Peach, H
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1983

description: It has been claimed that the aggregation of information from several areas of life into a small set of global measures has certain advantages for describing disability. Global measures of disability were constructed from a modified version of an existing health survey instrument and the sickness impact profile (SIP) and their properties were tested. The disability items grouped satisfactorily into five global measures (physical, psychosocial, eating, communication, and work). All disability measures (global and original category scores) were poor predictors of service use by individuals but were related as expected to age and number of medical conditions. The global measures generally had lower standard errors and better repeatability. All scores exhibit J-shaped distributions for cross sectional data but the change in global measures over time was consistent with the normal distribution. Preferably, both global and category measures should be used for comparing changes over time between groups of individuals.
Convex Total Least Squares
Creators: name: Malioutov, Dmitry
name: Slavov, Nikolai
Publisher: name: arXiv
Year: 2014
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Genomics (q-bio.GN)
subject: Quantitative Methods (q-bio.QM)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: We study the total least squares (TLS) problem that generalizes least squares regression by allowing measurement errors in both dependent and independent variables. TLS is widely used in applied fields including computer vision, system identification and econometrics. The special case when all dependent and independent variables have the same level of uncorrelated Gaussian noise, known as ordinary TLS, can be solved by singular value decomposition (SVD). However, SVD cannot solve many important practical TLS problems with realistic noise structure, such as having varying measurement noise, known structure on the errors, or large outliers requiring robust error-norms. To solve such problems, we develop convex relaxation approaches for a general class of structured TLS (STLS). We show both theoretically and experimentally, that while the plain nuclear norm relaxation incurs large approximation errors for STLS, the re-weighted nuclear norm approach is very effective, and achieves better accuracy on challenging STLS problems than popular non-convex solvers. We describe a fast solution based on augmented Lagrangian formulation, and apply our approach to an important class of biological problems that use population average measurements to infer cell-type and physiological-state specific expression levels that are very hard to measure directly.
description: 9 pages, 4 figures
Modeling H$α$ and He 10830 transmission spectrum of WASP-52b
Creators: name: Yan, Dongdong
name: Seon, Kwang-il
name: Guo, Jianheng
name: Chen, Guo
name: Li, Lifang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Escaping atmosphere has been detected by the excess absorption of Ly$α$, H$α$ and He triplet (10830$\rmÅ$) lines. Simultaneously modeling the absorption of the H$α$ and He 10830 lines can provide useful constraints about the exoplanetary atmosphere. In this paper, we use a hydrodynamic model combined with a non-local thermodynamic model and a new Monte Carlo simulation model to obtain the H(2) and He(2$^3$S) populations. The Monte Carlo simulations of Ly$α$ radiative transfer are performed with assumptions of a spherical stellar Ly$α$ radiation and a spherical planetary atmosphere, for the first time, to calculate the Ly$α$ mean intensity distribution inside the planetary atmosphere, necessary in estimating the H(2) population. We model the transmission spectra of the H$α$ and He 10830 lines simultaneously in hot Jupiter WASP-52b. We find that models with many different H/He ratios can reproduce the H$α$ observations well if the host star has (1) a high X-ray/extreme ultraviolet (XUV) flux ($F_{\rm XUV}$) and a relatively low X-ray fraction in XUV radiation ($β_m$), or (2) a low $F_{\rm XUV}$ and a high $β_m$. The simulations of He 10830 $\rmÅ$ triplet suggest that a high H/He ratio ($\sim$ 98/2) is required to fit the observation. The models that fit both lines well confine $F_{\rm XUV}$ to be about 0.5 times the fiducial value and $β_m$ to have a value around 0.3. The models also suggest that hydrogen and helium originate from the escaping atmosphere, and the mass-loss rate is about 2.8$\times 10^{11}$ g s$^{-1}$.
description: Accepted for publication in ApJ, 48 pages
Incorporating baryon-driven contraction of dark matter halos in rotation curve fits
Creators: name: Li, Pengfei
name: McGaugh, Stacy S.
name: Lelli, Federico
name: Schombert, James M.
name: Pawlowski, Marcel S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The condensation of baryons within a dark matter (DM) halo during galaxy formation should result in some contraction of the halo as the combined system settles into equilibrium. We quantify this effect on the cuspy primordial halos predicted by DM-only simulations for the baryon distributions observed in the galaxies of the SPARC database. We find that the DM halos of high surface brightness galaxies (with $Σ_{\rm eff}\gtrsim100$ $L_\odot$ pc$^{-2}$ at 3.6 $μ$m) experience strong contraction. Halos become more cuspy as a result of compression: the inner DM density slope increases with the baryonic surface mass density. We iteratively fit rotation curves to find the balance between initial halo parameters (constrained by abundance matching), compression, and stellar mass-to-light ratio. The resulting fits often require lower stellar masses than expected for stellar populations, particularly in galaxies with bulges: stellar mass must be reduced to make room for the DM it compresses. This trade off between dark and luminous mass is reminiscent of the cusp-core problem in dwarf galaxies, but occurs in more massive systems: the present-epoch DM halos cannot follow from cuspy primordial halos unless (1) the stellar mass-to-light ratios are systematically smaller than expected from standard stellar population synthesis models, and/or (2) there is a net outward mass redistribution from the initial cusp, even in massive galaxies widely considered to be immune from such effects.
description: 13 pages, 9 figures, 1 table. Accepted for publication in A&A
title: Intrarenal hemodynamics and left ventricular geometry in patients with arterial hypertension
Creators: name: Cabac-Pogorevici, Irina
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Kidney
subject: Vascular
subject: Echocardiography
subject: Ultrasound-Colour Doppler
subject: Ultrasound-Spectral Doppler
subject: Imaging sequences
subject: Diagnostic procedure
subject: Haemodynamics / Flow dynamics
subject: Arteriosclerosis
subject: Hypertension

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: In the last decades a particular attention was paid to the identification of early markers of asymptomatic target organ damage, such as left ventricular hypertrophy in arterial hypertension, because they allow early evaluation of global...
Interaction effects on galaxy pairs with Gemini/GMOS- II: Oxygen abundance gradients
Creators: name: Rosa, D. A.
name: Dors, O. L.
name: Krabbe, A. C.
name: Hagele, G. F.
name: Cardaci, M. V.
name: Pastoriza, M. G.
name: Rodrigues, I.
name: Winge, C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this paper we derived oxygen abundance gradients from HII regions located in eleven galaxies in eight systems of close pairs. Long-slit spectra in the range 4400-7300A were obtained with the Gemini Multi-Object Spec- trograph at Gemini South (GMOS). Spatial profiles of oxygen abundance in the gaseous phase along galaxy disks were obtained using calibrations based on strong emission-lines (N2 and O3N2). We found oxygen gradients signifi- cantly flatter for all the studied galaxies than those in typical isolated spiral galaxies. Four objects in our sample, AM1219A, AM1256B, AM 2030A and AM2030B, show a clear break in the oxygen abundance at galactocentric radius R/R25 between 0.2 and 0.5. For AM1219A and AM1256B we found negative slopes for the inner gradients, and for AM2030B we found a positive one. In all these three cases they show a flatter behaviour to the outskirts of the galaxies. For AM2030A, we found a positive-slope outer gradient while the inner one is almost compatible with a flat behaviour. A decrease of star forma- tion efficiency in the zone that corresponds to the oxygen abundance gradient break for AM1219A and AM2030B was found. For the former, a minimum in the estimated metallicities was found very close to the break zone that could be associated with a corotation radius. On the other hand, AM1256B and AM2030A, present a SFR maximum but not an extreme oxygen abundance value. All the four interacting systems that show oxygen gradient breakes the extreme SFR values are located very close to break zones. Hii regions lo- cated in close pairs of galaxies follow the same relation between the ionization parameter and the oxygen abundance as those regions in isolated galaxies.
description: 30 pages, 14 figures, accepted MNRAS, (Figs. 1 and 2 are in low resolution)
Case-control study of occupation and cancer of the prostate in New Zealand.
Creators: name: Sheppard, R A
name: Fraser, J
name: Pearce, N E
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1987

description: A New Zealand Cancer Registry based case-control study involved 617 male patients with prostate cancer registered during 1979 and aged 20 years or more at the time of registration. Controls were also males chosen from the Cancer Registry with two controls per case, matched on age and year of registration. There was an elevated risk in the upper social class groupings. The data did not support the findings, from other countries, of elevated risks in agricultural workers (odds ratio = 1.08, 90% confidence limits 0.86-1.36). The only occupational groups showing elevated risks were sales and service workers (odds ratio = 1.29, 90% confidence limits 0.99-1.69) and teachers (odds ratio = 2.44, 90% confidence limits 1.05-5.70). The New Zealand data do not in general suggest that occupational factors--or lifestyle factors associated with occupation--are of major direct importance in the aetiology of prostate cancer.
Variation in the magnitude of black-white differences in stroke mortality by community occupational structure.
Creators: name: Casper, M
name: Wing, S
name: Strogatz, D
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1991

description: STUDY OBJECTIVE--The aim was to examine the patterns of black-white differences in stroke mortality across communities with varying levels of occupational structure in the southern region of the United States DESIGN--Annual age adjusted race-sex specific rates for stroke mortality were calculated for the years 1979-1981 and related to socioeconomic conditions. SETTING--The study involved 211 state economic areas comprising the southern region of the USA. STUDY POPULATION--Data on stroke mortality for black and white men and women between the ages of 35 and 74 years living in the study area were acquired from the National Center for Health Statistics. MEASUREMENTS AND MAIN RESULTS--Occupational structure was measured as the proportion of white collar workers in each state economic area, and is an indicator of the employment opportunities and related social and economic resources of a community. Stratified analyses and linear regression modelling indicate that communities of lower occupational structure have (a) higher levels of stroke mortality for all four race-sex groups (p less than 0.05) and (b) larger racial inequalities in stroke mortality (p less than 0.01). For men and women, the excess stroke mortality among blacks compared to whites is larger in communities of lower occupational structure. CONCLUSIONS--Consideration of occupational structure and related patterns of economic development is crucial for understanding the distribution of stroke mortality within and between racial groups, as well as for planning effective public health interventions. The larger racial inequalities in communities of lower occupational structure in the south suggest that aspects of the black experience which are conducive to high rates of stroke mortality are exacerbated in those communities. Public health interventions to reduce the racial and social inequalities in stroke mortality should recognise the social context within which nutritional, occupational, medical care, and environmental determinants of stroke are distributed.
Testing Lyman alpha emission line reconstruction routines at multiple velocities in one system
Creators: name: Wilson, David J.
name: Youngblood, Allison
name: Toloza, Odette
name: Drake, Jeremy J.
name: France, Kevin
name: Froning, Cynthia S.
name: Gaensicke, Boris T.
name: Redfield, Seth
name: Wood, Brian E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The 1215.67A HI Lyman alpha emission line dominates the ultraviolet flux of low mass stars, including the majority of known exoplanet hosts. Unfortunately, strong attenuation by the interstellar medium (ISM) obscures the line core at most stars, requiring the intrinsic Lyman alpha flux to be reconstructed based on fits to the line wings. We present a test of the widely-used Lyman alpha emission line reconstruction code LYAPY using phase-resolved, medium-resolution STIS G140M observations of the close white dwarf-M dwarf binary EG UMa. The Doppler shifts induced by the binary orbital motion move the Lyman alpha emission line in and out of the region of strong ISM attenuation. Reconstructions to each spectrum should produce the same Lyman alpha profile regardless of phase, under the well-justified assumption that there is no intrinsic line variability between observations. Instead, we find that the reconstructions underestimate the Lyman alpha flux by almost a factor of two for the lowest-velocity, most attenuated spectrum, due to a degeneracy between the intrinsic Lyman alpha and ISM profiles. Our results imply that many stellar Lyman alpha fluxes derived from G140M spectra reported in the literature may be underestimated, with potential consequences for, for example, estimates of extreme-ultraviolet stellar spectra and ultraviolet inputs into simulations of exoplanet atmospheres.
description: Accepted for publication in ApJ
Extending GCC-PHAT using Shift Equivariant Neural Networks
Creators: name: Berg, Axel
name: O'Connor, Mark
name: Åström, Kalle
name: Oskarsson, Magnus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Speaker localization using microphone arrays depends on accurate time delay estimation techniques. For decades, methods based on the generalized cross correlation with phase transform (GCC-PHAT) have been widely adopted for this purpose. Recently, the GCC-PHAT has also been used to provide input features to neural networks in order to remove the effects of noise and reverberation, but at the cost of losing theoretical guarantees in noise-free conditions. We propose a novel approach to extending the GCC-PHAT, where the received signals are filtered using a shift equivariant neural network that preserves the timing information contained in the signals. By extensive experiments we show that our model consistently reduces the error of the GCC-PHAT in adverse environments, with guarantees of exact time delay recovery in ideal conditions.
description: Proceedings of INTERSPEECH
title: Anterior cruciate ligament injury: what signs to look for on MRI scans
Creators: name: Gramada, Tudor
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Athletic injuries
subject: Diagnostic procedure
subject: MR
subject: Musculoskeletal joint

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To determine which are the most accurate and specific magnetic resonance imaging (MRI) signs in the diagnostic of anterior cruciate ligament lesions...
Helmholtz Open Science Policy: Implementing the UNESCO Recommendation on Open Science
Creators: name: Ferguson, Lea Maria
name: Pampel, Heinz
name: Bertelmann, Roland
name: Meistring, Marcel
name: Weisweiler, Nina Leonie
Publisher: name: Zenodo
Year: 2023

description: Open science promotes innovation, improves the transfer of knowledge to society and the economy, and ensures quality and transparency in research. The Helmholtz Association, Germany's largest research performing organization, has thus adopted an Open Science Policy in September 2022 [1].
This policy supports openness as a central endeavor of science and makes open science the standard for scholarly publications, research data, and research software in Helmholtz. Essentially, the policy takes up the "UNESCO Recommendation on Open Science" [2] as well as the EU Commission's open science funding policy in the current Horizon Europe research framework program. Furthermore, the policy is guided by the principles of transparency, quality assurance, and sustainability.
Currently, already 82 percent of Helmholtz scholarly articles are accessible via open access. Open research data are published; the Helmholtz Centers e.g., participate in the European Open Science Cloud (EOSC) and National Research Data Infrastructure (NFDI). Central, too, is the open publication of research software to promote the reproducibility of scientific results.
Our contribution presents a comprehensive and practically informed perspective on how to implement open science, working together with numerous stakeholders within research performing organizations such as Helmholtz to guide the cultural change towards openness.
This process is not only inspired and supported by the UNESCO Recommendation on Open Science; also, the cultural change towards openness is enabled in a multifaceted and global manner. In this contribution and the ensuing discussion, there will thus be ample opportunity to discuss open science and its implementation; the target audience are researchers, administrators, and infrastructure professionals, as well as all further interested persons.
References[1] Helmholtz Association (2022): Helmholtz Open Science Policy.[2] UNESCO (2021): UNESCO Recommendation on Open Science. https://unesdoc.unesco.org/ark:/48223/pf0000379949.locale=en
Experimental constraints on the $ω$-nucleus real potential
Creators: name: Friedrich, S.
name: Makonyi, K.
name: Metag, V.
name: Bayadilov, D.
name: Bantes, B.
name: Beck, R.
name: Beloglazov, Y. A.
name: Böse, S.
name: Brinkmann, K. -T.
name: Challand, Th.
name: Crede, V.
name: Dahlke, T.
name: Dietz, F.
name: Drexler, P.
name: Eberhardt, H.
name: Elsner, D.
name: Ewald, R.
name: Fornet-Ponse, K.
name: Frommberger, F.
name: Funke, Ch.
name: Gottschall, M.
name: Gridnev, A.
name: Grüner, M.
name: Gutz, E.
name: Hammann, Ch.
name: Hammann, D.
name: Hannappel, J.
name: Hartmann, J.
name: Hillert, W.
name: Hirenzaki, S.
name: Hoffmeister, P.
name: Honisch, Ch.
name: Jaegle, I.
name: Kaiser, D.
name: Kalinowsky, H.
name: Kammer, S.
name: Keshelashvili, I.
name: Kleber, V.
name: Klein, F.
name: Krusche, B.
name: Lang, M.
name: Lopatin, I. V.
name: Maghrbi, Y.
name: Nanova, M.
name: Nagahiro, H.
name: Müller, J.
name: Odenthal, T.
name: Piontek, D.
name: Rostomyan, T.
name: Schaepe, S.
name: Schmidt, Ch.
name: Schmieden, H.
name: Schmitz, R.
name: Seifen, T.
name: Thiel, A.
name: Thoma, U.
name: van Pee, H.
name: Walther, D.
name: Weil, J.
name: Wendel, Ch.
name: Wiedner, U.
name: Wilson, A.
name: Winnebeck, A.
name: Zenke, F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In a search for $ω$ mesic states, the production of $ω$-mesons in coincidence with forward going protons has been studied in photon induced reactions on $^{12}$C for incident photon energies of 1250 - 3100 MeV. The $π^0 γ$ pairs from decays of bound or quasi-free $ω$-mesons have been measured with the CBELSA/TAPS detector system in coincidence with protons registered in the MiniTAPS forward array. Structures in the total energy distribution of the $π^0 γ$ pairs, which would indicate the population and decay of bound $ω~^{11}$B states, are not observed. The $π^0 γ$ cross section of 0.3 nb/MeV/sr observed in the bound state energy regime between -100 and 0 MeV may be accounted for by yield leaking into the bound state regime because of the large in-medium width of the $ω$-meson. A comparison of the measured total energy distribution with calculations suggests the real part $V_0$ of the $ω~^{11}$B potential to be small and only weakly attractive with $V_0(ρ=ρ_0) = -15\pm$ 35(stat) $\pm$20(syst) MeV in contrast to some theoretical predictions of attractive potentials with a depth of 100 - 150 MeV.
description: 13 pages, 8 figures
title: Dielectric shading artifacts in high field Magnetic Tomography systems
Creators: name: Maliakas, Vasilios
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Radiographers
subject: MR physics
subject: MR
subject: Education
subject: Physics
subject: Technical aspects
subject: Education and training
subject: Artifacts

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Interpretation of dielectric shadow artifact - occurring due to the dielectric phenomenon and one of the disadvantages of imaging in high field magnetic resonance imaging systems (≥ 3.0 Tesla). The term dielectric effect refers to the interaction...
Kepler and TESS Observations of PG 1159-035
Creators: name: da Rosa, Gabriela Oliveira
name: Kepler, S. O.
name: Córsico, Alejandro H.
name: Costa, J. E. S.
name: Hermes, J. J.
name: Kawaler, S. D.
name: Bell, Keaton J.
name: Montgomery, M. H.
name: Provencal, J. L.
name: Winget, D. E.
name: Handler, G.
name: Dunlap, Bart
name: Clemens, J. C.
name: Uzundag, Murat
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: PG 1159-035 is the prototype of the DOV hot pre-white dwarf pulsators. It was observed during the Kepler satellite K2 mission for 69 days in 59 s cadence mode and by the TESS satellite for 25 days in 20 s cadence mode. We present a detailed asteroseismic analysis of those data. We identify a total of 107 frequencies representing 32 l=1 modes, 27 frequencies representing 12 l=2 modes, and 8 combination frequencies. The combination frequencies and the modes with very high k values represent new detections. The multiplet structure reveals an average splitting of 4.0+/-0.4 muHz for l=1 and 6.8+/-0.2 muHz for l=2, indicating a rotation period of 1.4+/-0.1 days in the region of period formation. In the Fourier transform of the light curve, we find a significant peak at 8.904+/-0.003 muHz suggesting a surface rotation period of 1.299+/-0.002 days. We also present evidence that the observed periods change on timescales shorter than those predicted by current evolutionary models. Our asteroseismic analysis finds an average period spacing for l=1 of 21.28+/-0.02 s. The l=2 modes have a mean spacing of 12.97+/-0.4 s. We performed a detailed asteroseismic fit by comparing the observed periods with those of evolutionary models. The best fit model has Teff=129600+/- 11100 K, mass M*=0.565+/-0.024 Msun, and log g=7.41+0.38-0.54, within the uncertainties of the spectroscopic determinations. We argue for future improvements in the current models, e.g., on the overshooting in the He-burning stage, as the best-fit model does not predict excitation for all the pulsations detected in PG~1159-03.
description: 27 pages, 9 tables and 26 figures
Improper Ferroelectricity in Helicoidal Antiferromagnet Cu3Nb2O8
Creators: name: Sharma, G.
name: Saha, J.
name: Kaushik, S. D.
name: Siruguri, V.
name: Patnaik, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Cu3Nb2O8 is an unusual multiferroic compound that undergoes a series of magnetic ordering at low temperatures. Concurrent development of electric polarization has been reported at TN1 ~25 K corresponding to a non-collinear helicoidal ordering (Phys. Rev. Lett. 107, 137205 (2011)). But questions remain on the microscopic origin of such phenomena. In this communication, we report a detailed study of induced polar ordering in Cu3Nb2O8 by performing polarization, magnetization, dielectric constant and heat capacity measurements over a broad range of temperature and magnetic field. The dielectric constant shows suppression in the magnetic field but it does not shift to lower temperature with the application of external field. The appearance of magneto-dielectric effect signifies the contribution of q-dependent magnetic correlation function with enhanced weightage in the presence of magnetic field. This magnetic correlation function is associated with the ferro-axial vector and our overall results support this mechanism for the observation of muliferroicity in Cu3Nb2O8.
Urbanisation and coronary heart disease mortality among African Americans in the US South.
Creators: name: Armstrong, D
name: Wing, S
name: Barnett, E
name: Strogatz, D
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1996

description: STUDY OBJECTIVE: Despite significant declines since the late 1960s, coronary mortality remains the leading cause of death for African Americans. African Americans in the US South suffer higher rates of cardiovascular disease than African Americans in other regions; yet the mortality experiences of rural-dwelling African Americans, most of whom live in the South, have not been described in detail. This study examined urban-rural differentials in coronary mortality trends among African Americans for the period 1968-86.

SETTING: The United States South, comprising 16 states and the District of Columbia.

STUDY POPULATION: African American men and women aged 35-74 years.

DESIGN: Analysis of urban-rural differentials in temporal trends in coronary mortality for a 19 year study period. All counties in the US South were grouped into five categories: greater metropolitan, lesser metropolitan, adjacent to metropolitan, semirural, and isolated rural. Annual age adjusted mortality rates were calculated for each urban status group. In 1968, observed excesses in coronary mortality were 29% for men and 45% for women, compared with isolated rural areas. Metropolitan areas experienced greater declines in mortality than rural areas, so by 1986 the urban-rural differentials in coronary mortality were 3% for men and 11% for women.

CONCLUSIONS: Harsh living conditions in rural areas of the South precluded important coronary risk factors and contributed to lower mortality rates compared with urban areas during the 1960s. The dramatic transformation from an agriculturally based economy to manufacturing and services employment over the course of the study period contributed to improved living conditions which promoted coronary mortality declines in all areas of the South; however, the most favourable economic and mortality trends occurred in metropolitan areas.
title: Radiological imaging of the Intra-Aortic Balloon Pump; positioning and associated complications.
Creators: name: Gibney, Brian
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Obstruction / Occlusion
subject: Haemodynamics / Flow dynamics
subject: Cardiac Assist Devices
subject: Instrumentation
subject: Education
subject: Complications
subject: CT
subject: Conventional radiography
subject: Interventional vascular
subject: Cardiovascular system
subject: Arteries / Aorta

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To provide an educational and pictorial review of the imaging manifestations of anatomical and positioning considerations and complications of aortic counter-pulsation therapy using an intra-aortic balloon pump (IABP). To illustrate and describe...
title: Syndromic/chromosomal disorders associated with anorectal malformation(ARM): Which anomalies do pediatric radiologists and surgeons need to focus on before surgical repair and during follow-up?
Creators: name: Hosokawa, Takahiro
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Congenital
subject: Screening
subject: Conventional radiography
subject: Paediatric

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: １）Patients with ARM require surgical repair; the first surgical procedure for ARM is needed on the day of or following birth. The syndromes/chromosomal disorders with ARM require evaluation to assess the risk of general anesthesia and whether...
title: Extrapleural density on oblique chest radiographs in non-accidental injury
Creators: name: Bomer, Josephine
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Trauma
subject: Normal variants
subject: Conventional radiography
subject: Thorax
subject: Paediatric
subject: Musculoskeletal system

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Radiographic survey is an important tool in the evaluation of non-accidental injury (NAI) in children [1,2]. One of the findings with a high positive predictive value for NAI is a posterior rib fracture [3-5], and may even be the only radiological...
title: Comparative analysis of measurement method of liver donor volume
Creators: name: DAE-KEUN, KIM
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Computer Applications-3D
subject: CT
subject: Liver
subject: Abdomen
subject: Grafts

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Hepatic resection for liver transplantation is hepatocellular carcinoma, intrahepatic bile duct carcinoma, metastatic liver carcinoma. Intrahepatic abscess has been performed. At this time Large-sized transplantation can cause complications due to...
Mapping the Complex Kinematic Substructure in the TW Hya Disk
Creators: name: Teague, Richard
name: Bae, Jaehan
name: Andrews, Sean M.
name: Benisty, Myriam
name: Bergin, Edwin A.
name: Facchini, Stefano
name: Huang, Jane
name: Longarini, Cristiano
name: Wilner, David
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present ALMA observations of CO $J = 2-1$ and CS $J = 5-4$ emission from the disk around TW~Hydrae. Both molecules trace a predominantly Keplerian velocity structure, although a slowing of the rotation velocity is detected at the outer edge of the disk beyond ${\approx}~140$~au in CO emission. This was attributed to the enhanced pressure support from the gas density taper near the outer edge of the disk. Subtraction of an azimuthally symmetric background velocity structure reveals localized deviations in the gas kinematics traced by each of the molecules. Both CO and CS exhibit a `Doppler flip' feature, centered nearly along the minor axis of the disk (${\rm PA} \sim 60\degr$) at a radius of $1\farcs35$, coinciding with the large gap observed in scattered light and mm~continuum. In addition, the CO emission, both through changes in intensity and its kinematics, traces a tightly wound spiral, previously seen with higher frequency CO $J = 3-2$ observations (Teague et al., 2019). Through comparison with linear models of the spiral wakes generated by embedded planets, we interpret these features in the context of interactions with a Saturn-mass planet within the gap at a position angle of ${\rm PA} = 60\degr$, consistent with the theoretical predictions of (Mentiplay et al. 2019). The lack of a corresponding spiral in the CS emission is attributed to the strong vertical dependence on the buoyancy spirals which are believed to only grow in the atmospheric of the disk, rather than those traced by CS emission.
description: Accepted to ApJ
IMPLEMENTING LANGUAGE POLICY AND PLANNING THROUGH MATERIALS DEVELOPMENT PROCESS
Creators: name: Abdurakhmonova, Dilnoza
Publisher: name: Zenodo
Year: 2023

description: This article discusses the implementation process of a language policy and planning by drawing attention to materials development step. It is clearly admitted that planning a new language policy is challenging task that really plays a big role in a language development of a certain country. In order to multiply the effectiveness of the LPP projects, organizers are asked to work harder on developing materials for the project that provides the match between goals and results. Usage of course books whether local or international ones is arguable topic in educational atmosphere.
title: Effect of sparse sampling and tube current reduction on MDCT-based femoral BMD measurements
Creators: name: Schwaiger, Benedikt
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Musculoskeletal bone
subject: Bones
subject: CT-Quantitative
subject: Image manipulation / Reconstruction
subject: Screening
subject: Comparative studies
subject: Osteoporosis

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Bone mineral density (BMD) measurements by using quantitative multi-detector computed tomography (MDCT) have emerged and already proven to enhance the prediction of osteoporotic fracture risk. However, broad clinical use is currently restricted due...
Hundreds of Low-Mass Active Galaxies in the Galaxy And Mass Assembly (GAMA) Survey
Creators: name: Salehirad, S.
name: Reines, A. E.
name: Molina, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present an entirely new sample of 388 low-mass galaxies ($M_\star \leq 10^{10} M_\odot$) that have spectroscopic signatures indicating the presence of massive black holes (BHs) in the form of active galactic nuclei (AGNs) or tidal disruption events (TDEs). Of these, 70 have stellar masses in the dwarf galaxy regime with $10^8 \lesssim M_\star/M_\odot \lesssim 10^{9.5}$. We identify the active galaxies by analyzing optical spectra of a parent sample of $\sim$23,000 low-mass emission-line galaxies in the Galaxy and Mass Assembly (GAMA) Survey Data Release 4, and employing four different diagnostics based on narrow emission line ratios and the detection of high-ionization coronal lines. We find that 47 of the 388 low-mass active galaxies exhibit broad H$α$ in their spectra, corresponding to virial BH masses in the range $M_{\rm BH} \sim 10^{5.0-7.7} M_\odot$ with a median BH mass of $\langle M_{\rm BH}\rangle \sim 10^{6.2} M_\odot$. Our sample extends to higher redshifts ($z \le 0.3; \langle z \rangle=0.13$) than previous samples of AGNs in low-mass/dwarf galaxies based on Sloan Digital Sky Survey spectroscopy, which can be attributed to the spectroscopic limit of GAMA being $\sim 2$ magnitudes deeper. Moreover, our multi-diagnostic approach has revealed low-mass active galaxies spanning a wide range of properties, from blue star-forming dwarfs to luminous "miniquasars" powered by low-mass BHs. As such, this work has implications for BH seeding and AGN feedback at low masses.
description: Accepted for publication in The Astrophysical Journal
title: Preliminary study of CT bronchial quantitative analysis in patients with consolidation-type pulmonary contusion combined with ARDS
Creators: name: Dai, Yong-liang
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Lung
subject: CT-Quantitative
subject: CAD
subject: Trauma

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To explore the clinical significance of results obtained by quantitative analysis of CT bronchial measurements of patients with pulmonary contusionandlung consolidation, which is further complicated with acute respiratory distress syndrome...
Bayesian estimation of realized stochastic volatility model by Hybrid Monte Carlo algorithm
Creators: name: Takaishi, Tetsuya
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computational Finance (q-fin.CP)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: The hybrid Monte Carlo algorithm (HMCA) is applied for Bayesian parameter estimation of the realized stochastic volatility (RSV) model. Using the 2nd order minimum norm integrator (2MNI) for the molecular dynamics (MD) simulation in the HMCA, we find that the 2MNI is more efficient than the conventional leapfrog integrator. We also find that the autocorrelation time of the volatility variables sampled by the HMCA is very short. Thus it is concluded that the HMCA with the 2MNI is an efficient algorithm for parameter estimations of the RSV model.
description: 4 pages, 2 figures
La "smaterializzazione" dell'opera e la questione dell'arte relazionale. Il dibattito critico in Italia e le esperienze artistiche di Piero Gilardi e Michelangelo Pistoletto
Creators: name: De Vivo, Maria
Publisher: name: Universita degli studi di Salerno
Year: 2013
Subjects: subject: L-ART/04 MUSEOLOGIA E CRITICA ARTISTICA E DEL RESTAURO
subject: Critica
subject: Smaterializzazione
subject: Piero Gilardi

description: 2011 - 2012
description: La "smaterializzazione" dell'opera - un processo che ha messo in discussione categorie tradizionali e generici artistici - è il tema centrale intorno al quale si polarizzano gli sviluppi dell'arte sul finire del decennio sessanta del Novecento, in una diffusa area di ricerca che spazia, coma ha detto Piero Gilardi, da "Torino alla West Coast". Questo lavoro di tesi muove dall'analisi del dibattito critico che da tale processo è scaturito, prendendo in particolare in considerazione ciò che accade nel contesto italiano nell'arco cronologico 1966-1972, un periodo tanto circoscritto quanto intensamente decisivo. .. [introduzione a cura dell'Autore]
Neighbourhood differences in diet: the Atherosclerosis Risk in Communities (ARIC) Study
Creators: name: Szklo, M.
name: Tyroler, H. A.
name: Diez-Roux, A. V.
name: Caulfield, L.
name: Nieto, F. J.
name: Watson, R. L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999

description: STUDY OBJECTIVE: To investigate whether neighbourhood characteristics are related to dietary patterns independently of individual level variables. DESIGN: A cross sectional analysis of the relation between neighbourhood median household income and food and nutrient intakes, before and after adjustment for individual level variables. SETTING: Four United States communities (Washington Co, MD; Suburban Minneapolis, MN; Forsyth Co, NC, and Jackson, MS). PARTICIPANTS: 13,095 adults aged 45 to 64 years participating in the baseline examination of the Atherosclerosis Risk in Communities (ARIC) Study, a prospective study of atherosclerosis. MEASUREMENTS AND MAIN RESULTS: Information on diet and individual level income was obtained from the baseline examination of the ARIC Study. Diet was assessed using a semi- quantitative food frequency questionnaire. Information on neighbourhood (census defined block groups) median household income was obtained from the 1990 US Census. Multilevel models were used to account for the multilevel structure of the data. Living in lower income neighbourhoods was generally associated with decreased energy adjusted intake of fruits, vegetables, fish, and increased intake of meat. Patterns generally persisted after adjustment for individual level income, but were often not statistically significant. Inconsistent associations were recorded for the intake of saturated fat, polyunsaturated fat, and cholesterol. Overall, individual level income was a more consistent predictor of diet than neighbourhood income. CONCLUSION: Despite limitations in the definition and characterisation of neighbourhoods, this study found consistent (albeit small) differences across neighbourhoods in food intake, suggesting that more in depth research into potential neighbourhood level determinants of diet is warranted.
VR Spider 2
Creators: name: Eder, Andreas B.
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: approach-avoidance
subject: spider
subject: virtual reality

description: Investigation of avoidance reactions to animated spiders in a virtual reality environment. Follow-up experiment to VR Spider 1 (https://osf.io/85bg6)
Predictors of incidence and prevalence of green tobacco sickness among Latino farmworkers in North Carolina, USA
Creators: name: Arcury, T A
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2001

description: STUDY OBJECTIVE—The characteristics of some populations make epidemiological measurement extremely difficult. The objective of this study is to identify risk factors that explain variation among incidence densities and proportions of one occupational illness, green tobacco sickness, within one such special population, Latino migrant and seasonal farmworkers in the United States.DESIGN—Prospective cohort study.SETTING—37 farmworker residential sites located in Granville and Wake Counties, North Carolina, USA.PARTICIPANTS—182 migrant and seasonal farmworkers that included 178 Latino men, three Latino women, and one non-Hispanic white man.MAIN RESULTS—Green tobacco sickness had a prevalence of 0.082, and an incidence density of events per 100 days of 1.88 among the farmworkers. Prevalence and incidence density increased from early to late agricultural season. Major risk factors included lack of work experience, work activities, and working in wet clothes. Tobacco use was protective.CONCLUSION—Green tobacco sickness has a high incidence among migrant and seasonal farmworkers. Because workers have little control over most risk factors, further research is needed to identify ways to prevent this occupational illness.Keywords: occupational health; farmworkers