cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Reconstructing Galaxy Spectral Energy Distributions from Broadband Photometry
Creators: name: Csabai, I.
name: Connolly, A. J.
name: Szalay, A. S.
name: Budavari, T.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a novel approach to photometric redshifts, one that merges the advantages of both the template fitting and empirical fitting algorithms, without any of their disadvantages. This technique derives a set of templates, describing the spectral energy distributions of galaxies, from a catalog with both multicolor photometry and spectroscopic redshifts. The algorithm is essentially using the shapes of the templates as the fitting parameters. From simulated multicolor data we show that for a small training set of galaxies we can reconstruct robustly the underlying spectral energy distributions even in the presence of substantial errors in the photometric observations. We apply these techniques to the multicolor and spectroscopic observations of the Hubble Deep Field building a set of template spectra that reproduced the observed galaxy colors to better than 10%. Finally we demonstrate that these improved spectral energy distributions lead to a photometric-redshift relation for the Hubble Deep Field that is more accurate than standard template-based approaches.
description: 23 pages, 8 figures, LaTeX AASTeX, accepted for publication in AJ
On invariant distributions of Feller Markov chains with applications to dynamical systems with random switching
Creators: name: Benaïm, Michel
name: Tough, Oliver
Publisher: name: arXiv
Year: 2023
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60, 37, 60J, 37C

description: We introduce simple conditions ensuring that invariant distributions of a Feller Markov chain on a compact Riemannian manifold are absolutely continuous with a lower semi-continuous, continuous or smooth density with respect to the Riemannian measure. This is applied to Markov chains obtained by random composition of maps and to piecewise deterministic Markov processes obtained by random switching between flows.
description: An error in the statement of Theorem 2.11 has been corrected
Compressive Sensing Based User Clustering for Downlink NOMA Systems with Decoding Power
Creators: name: Yang, Zhaohui
name: Pan, Cunhua
name: Xu, Wei
name: Chen, Ming
Publisher: name: arXiv
Year: 2018
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This letter investigates joint power control and user clustering for downlink non-orthogonal multiple access systems. Our aim is to minimize the total power consumption by taking into account not only the conventional transmission power but also the decoding power of the users. To solve this optimization problem, it is firstly transformed into an equivalent problem with tractable constraints. Then, an efficient algorithm is proposed to tackle the equivalent problem by using the techniques of reweighted 1-norm minimization and majorization-minimization. Numerical results validate the superiority of the proposed algorithm over the conventional algorithms including the popular matching-based algorithm.
description: 5 pages, 2 figures, IEEE signal processing letters
Hopf algebras from poset growth models
Creators: name: Yeats, Karen
name: Zalel, Stav
Publisher: name: arXiv
Year: 2023
Subjects: subject: Combinatorics (math.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We give a framework for growth models on posets which simultaneously generalizes the Classical Sequential Growth models for posets from causal set theory and the tree growth models of natural growth and simple tree classes, the latter of which also appear as solutions of combinatorial Dyson-Schwinger equations in quantum field theory. We prove which cases of the Classical Sequential Growth models give subHopf algebras of the Hopf algebra of posets, in analogy to a characterization due to Foissy in the Dyson-Schwinger case. We find a family of generating sets for the Connes-Moscovici Hopf algebra.
description: 37 pages
Interaction of exotic states in a hadronic medium: the $Z_c(3900)$ case
Creators: name: Abreu, L. M.
name: Magalhães, R. O.
name: Navarra, F. S.
name: Vieira, H. P. L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the interactions of the charged exotic state $Z_c(3900)$ in a hadronic medium composed of light mesons. We study processes such as $Z_c π\to D\bar{D}$, $Z_c π\to D^*\bar{D}^*$, $Z_c π\to D\bar{D}^*$ and the inverse ones. Using effective Lagrangians and form factors calculated with QCD sum rules (treating the $Z_c(3900)$ as a tetraquark) we estimate the vacuum and thermally-averaged cross-sections of these reactions. We find that the $Z_c(3900)$ has relatively large interaction cross sections with the constituent particles of the hadronic medium. After that, we use the production and suppression cross sections in a rate equation to estimate the time evolution of the $Z_c$ multiplicity. We include the $Z_c$ decay and regeneration terms. The coalescence model is employed to compute the initial $Z_c$ multiplicity for the compact tetraquark configuration. Our results indicate that the combined effects of hadronic interactions, hydrodynamical expansion, decay and regeneration affect the final yield, which is bigger than the initial value. Besides, the dependence of the $Z_c$ final yield with the centrality, center-of-mass energy and the charged hadron multiplicity measured at midrapidity $[dN_{ch}/dη\,(η<0.5)]$ is also investigated.
description: 9 pages; 8 figures
Interferometer-based high-accuracy white light measurement of neutral rubidium density and gradient at AWAKE
Creators: name: Batsch, Fabian
name: Martyanov, Mikhail
name: Oez, Erdem
name: Moody, Joshua
name: Gschwendtner, Edda
name: Caldwell, Allen
name: Muggli, Patric
Publisher: name: arXiv
Year: 2018
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The AWAKE experiment requires an automated online rubidium (Rb) plasma density and gradient diagnostic for densities between 1 and 10$\cdot$10$^{14}$ cm$^{-3}$. A linear density gradient along the plasma source at the percent level may be useful to improve the electron acceleration process. Because of full laser ionization of Rb vapor to Rb$^{+}$ within a radius of 1 mm, the plasma density equals the vapor density. We measure the Rb vapor densities at both ends of the source, with high precision using, white light interferometry. At either source end, broadband laser light passes a remotely controlled Mach-Zehnder interferometer built out of single mode fibers. The resulting interference signal, influenced by dispersion in the vicinity of the Rb D1 and D2 transitions, is dispersed in wavelength by a spectrograph. Fully automated Fourier-based signal conditioning and a fit algorithm yield the density with an uncertainty between the measurements at both ends of 0.11 to 0.46 $\%$ over the entire density range. These densities used to operate the plasma source are displayed live in the control room.
description: 5 pages, 8 figures, EAAC2017 conference proceeding
FARGO: a fast eulerian transport algorithm for differentially rotating disks
Creators: name: Masset, F.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an efficient and simple modification of the standard transport algorithm used in explicit eulerian fixed polar grid codes, aimed at getting rid of the average azimuthal velocity when applying the Courant condition. This results in a much larger timestep then the usual procedure, and it is particularly well-suited to the description of a Keplerian disk where one is traditionally limited by the very demanding Courant condition on the fast orbital motion at the inner boundary. In this modified algorithm, the timestep is limited by the perturbed velocity and by the shear arising from the differential rotation. FARGO stands for ``Fast Advection in Rotating Gaseous Objects''. The speed-up resulting from the use of the FARGO algorithm is problem dependent. In the example presented here, which shows the evolution of a Jupiter sized protoplanet embedded in a minimum mass protoplanetary nebula, the FARGO algorithm is about an order of magnitude faster than a traditional transport scheme, with a much smaller numerical diffusivity.
description: 9 pages, 6 figures. Accepted for publication in Astron. Astrophys. Supp. Series
On the Deconfinement Phase Transition in the Resonance Gas
Creators: name: Leonidov, A. V.
name: Zinovjev, G. M.
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We obtain the constraints on the ruling parameters of the dense hadronic gas model at the critical temperature and propose the quasiuniversal ratios of the thermodynamic quantities. The possible appearence of thermodynamical instability in such a model is discussed.
description: 7 pages, plain LaTeX, BI-TP 94/40
Music Genre Classification Using Spectral Analysis and Sparse Representation of the Signals
Creators: name: Banitalebi-Dehkordi, Mehdi
name: Banitalebi-Dehkordi, Amin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we proposed a robust music genre classification method based on a sparse FFT based feature extraction method which extracted with discriminating power of spectral analysis of non-stationary audio signals, and the capability of sparse representation based classifiers. Feature extraction method combines two sets of features namely short-term features (extracted from windowed signals) and long-term features (extracted from combination of extracted short-time features). Experimental results demonstrate that the proposed feature extraction method leads to a sparse representation of audio signals. As a result, a significant reduction in the dimensionality of the signals is achieved. The extracted features are then fed into a sparse representation based classifier (SRC). Our experimental results on the GTZAN database demonstrate that the proposed method outperforms the other state of the art SRC approaches. Moreover, the computational efficiency of the proposed method is better than that of the other Compressive Sampling (CS)-based classifiers.
Fundamental Plane Distances to Early-type Field Galaxies in the South Equatorial Strip. I. The Spectroscopic Data
Creators: name: Müller, K. R.
name: Wegner, G.
name: Freudling, W.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Radial velocities and central velocity dispersions are derived for 238 E/S0 galaxies from medium-resolution spectroscopy. New spectroscopic data have been obtained as part of a study of the Fundamental Plane distances and peculiar motions of early-type galaxies in three selected directions of the South Equatorial Strip, undertaken in order to investigate the reality of large-scale streaming motion; results of this study have been reported in Müller $et$ $al.$ (1998). The new APM South Equatorial Strip Catalog ($-17^{\circ}.5 < δ< +2^{\circ}.5$) was used to select the sample of field galaxies in three directions: (1) 15h10 - 16h10; (2) 20h30 - 21h50; (3) 00h10 - 01h30. The spectra obtained have a median S/N per $Å$ of 23, an instrumental resolution (FWHM) of $\sim$ 4 $Å$, and the spectrograph resolution (dispersion) is $\sim$ 100 km~s$^{-1}$. The Fourier cross-correlation method was used to derive the radial velocities and velocity dispersions. The velocity dispersions have been corrected for the size of the aperture and for the galaxy effective radius. Comparisons of the derived radial velocities with data from the literature show that our values are accurate to 40 km~s$^{-1}$. A comparison with results from J$ø$rgensen et al. (1995) shows that the derived central velocity dispersion have an rms scatter of 0.036 in $\log σ$. There is no offset relative to the velocity dispersions of Davies et al. (1987).
description: accepted for publication in Astronomy & Astrophysics Supplement Series
A copula-based sensitivity analysis method and its application to a North Sea sediment transport model
Creators: name: Tene, Matei
name: Stuparu, Dana E.
name: Kurowicka, Dorota
name: Serafy, Ghada Y. El
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applications (stat.AP)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: This paper describes a novel sensitivity analysis method, able to handle dependency relationships between model parameters. The starting point is the popular Morris (1991) algorithm, which was initially devised under the assumption of parameter independence. This important limitation is tackled by allowing the user to incorporate dependency information through a copula. The set of model runs obtained using latin hypercube sampling, are then used for deriving appropriate sensitivity measures. Delft3D-WAQ (Deltares, 2010) is a sediment transport model with strong correlations between input parameters. Despite this, the parameter ranking obtained with the newly proposed method is in accordance with the knowledge obtained from expert judgment. However, under the same conditions, the classic Morris method elicits its results from model runs which break the assumptions of the underlying physical processes. This leads to the conclusion that the proposed extension is superior to the classic Morris algorithm and can accommodate a wide range of use cases.
FairWASP: Fast and Optimal Fair Wasserstein Pre-processing
Creators: name: Xiong, Zikai
name: Dalmasso, Niccolò
name: Mishler, Alan
name: Potluru, Vamsi K.
name: Balch, Tucker
name: Veloso, Manuela
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Recent years have seen a surge of machine learning approaches aimed at reducing disparities in model outputs across different subgroups. In many settings, training data may be used in multiple downstream applications by different users, which means it may be most effective to intervene on the training data itself. In this work, we present FairWASP, a novel pre-processing approach designed to reduce disparities in classification datasets without modifying the original data. FairWASP returns sample-level weights such that the reweighted dataset minimizes the Wasserstein distance to the original dataset while satisfying (an empirical version of) demographic parity, a popular fairness criterion. We show theoretically that integer weights are optimal, which means our method can be equivalently understood as duplicating or eliminating samples. FairWASP can therefore be used to construct datasets which can be fed into any classification method, not just methods which accept sample weights. Our work is based on reformulating the pre-processing task as a large-scale mixed-integer program (MIP), for which we propose a highly efficient algorithm based on the cutting plane method. Experiments demonstrate that our proposed optimization algorithm significantly outperforms state-of-the-art commercial solvers in solving both the MIP and its linear program relaxation. Further experiments highlight the competitive performance of FairWASP in reducing disparities while preserving accuracy in downstream classification settings.
description: AAAI 2024, 15 pages, 4 figures, 1 table
Multi-Channel Search for Minimal Supergravity at $p\bar p$ and $e^+e^-$ Colliders
Creators: name: Baer, H.
name: Chen, C. H.
name: Munroe, R.
name: Paige, F.
name: Tata, X.
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the phenomenology of minimal supergravity models, assuming only that the low energy theory has the minimal particle content, that electroweak symmetry is radiatively broken, and that R-parity is essentially conserved. After delineating regions of supergravity parameter space currently excluded by direct particle searches at LEP and the Tevatron, we quantify how this search region will be expanded when LEP~II and the Tevatron Main Injector upgrades become operational. We describe how various experimental analyses can be consistently combined within a single framework, resulting in a multi-channel search for supersymmetry, but note that this analysis is sensitive to specific assumptions about physics at the unification scale.
description: preprint nos. FSU-HEP-940625 and UH-511-795-94, 11 pages (REVTEX) plus 2 uuencoded figures attached
Research Questionnaire
Creators: name: Triono, Muhammad Andi Abdillah
name: Ermiati, Cut
name: Sihombing, Humisar
name: Ahmad, Selamat Triono
Publisher: name: figshare
Year: 2021
Subjects: subject: 150314 Small Business Management
subject: FOS: Economics and business

description: From June 1, 2020, to October 25, 2020, questionnaires were sent to 466 SMEs in the production sector spread across 21 districts in Medan City by post and electronically based on mobile phone numbers via WhatsApp or SMS applications. The questionnaire was addressed to one owner or business leader to fill out and return the questionnaire completely, either manually by post or by simply filling in online via google form https://forms.gle/KhWRGTYW6hSKBbbWA.
The Energy Dependence of the Aperiodic Variability for Cygnus X-1, GX 339-4, GRS 1758-258, & 1E 1740.7-2942
Creators: name: Lin, D.
name: Smith, I. A.
name: Bottcher, M.
name: Liang, E. P.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using the data from the Rossi X-ray Timing Explorer (RXTE), we report the different energy dependence of the variability of the four persistent hard X-ray sources in the low-hard state: Cygnus X-1, GX 339-4, GRS 1758-258 and 1E 1740.7-2942. Cygnus X-1 is found to have a flatter power density spectrum (PDS) shape at higher energies. The other three sources have energy independent PDS shapes. The energy dependence of the overall variability (the integrated rms amplitude) varies from source to source and from observation to observation. 1E~1740.7-2942, for example, has a variability generally increasing with energy while GX 339-4 has a decreasing variability. A general trend is found in the four sources that the integrated rms amplitude anti-correlates with the X-ray flux. We compare these distinct energy dependent behaviors with several emission models. None of the models can fully explain all the features that we have found.
description: 18 pages, 6 figures. Accepted for publication in ApJ
Correlation-induced Fermi surface evolution and topological crystalline superconductivity in CeRh2As2
Creators: name: Ishizuka, Jun
name: Nogaki, Kosuke
name: Sigrist, Manfred
name: Yanase, Youichi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Locally noncentrosymmetric structures in crystals are attracting much attention owing to emergent phenomena associated with the sublattice degree of freedom. The newly discovered heavy fermion superconductor CeRh$_2$As$_2$ is considered to be an excellent realization of this class. Angle-resolved photoemission spectroscopy experiments recently observed low-energy spectra of electron and hole bands and characteristic Van Hove singularities, stimulating us to explore the electronic correlation effect on the band structure. In this Letter, we theoretically study the electronic state and topological superconductivity from first principles. Owing to the Coulomb repulsion $U$ of Ce 4$f$ electrons, the low-energy band structure is modified in accordance with the experimental result. We show that Fermi surfaces change significantly from a complicated three-dimensional structure to a simple two-dimensional one. Fermi surface formulas for one-dimensional $\mathbb{Z}_2$ invariants in class D indicate topological crystalline superconductivity protected by the glide symmetry in a broad region for $U$. The classification of superconducting gap structure reveals topologically protected excitation gap and node. Our findings of the correlation-induced evolution of electronic structure provide a basis to clarify the unusual phase diagram of CeRh$_2$As$_2$ including superconductivity, magnetic order, and quadrupole density wave, and accelerate the search for topological superconductivity in strongly correlated electron systems.
description: 11 pages, 6 figures
MPEC 2024-E133 : DAILY ORBIT UPDATE (2024 March 9)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Photon Vector Meson Coupling and Vector Meson Properties at Low Temperature Pion Gas
Creators: name: Lee, Su Houng
name: Song, Chungsik
name: Yabu, Hiroyuki
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The vector and axial vector current mixing phenomena at low temperature pion gas by Dey, Eletsky and Ioffe, leads to the low temperature correction of the photon-vector meson coupling ($g_ρ$) at order $ε=T^2/6f_π^2$ and the $ρ$ meson mass at order $ε^2$. We show how this {\it low temperature theorems} involving the photon and vector mesons are satisfied in the chiral models based on hidden gauge symmetry and the massive Yang-Mills approach with an explicit $a_1$ meson. We discuss possible phenomenological consequences of the low temperature corrections in RHIC experiments.
description: 13 pages, Revtex, 3 figures (available upon request), DOE/ER/40427-15-N94,TMU-NT940801
Cremastogaster menilekii Forel (Atopogyne), n. spec.
Creators: name: Forel, A.
Publisher: name: Zenodo
Year: 1894
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Cremastogaster
Cremastogaster menilekii

description: Cremastogaster Menilekii, n. spec.
[[worker]]. Lg. 3,7 — 4 mm. Mandibeln dicht gestreift. Kopf eher etwas breiter als lang, mit' stark convexen Seiten und den Augen kaum hinter der Mitte. Keule dreigliedrig; Schaft den Hinterrand erreichend. Vorderrand des Clypeus in der Mitte gerade, beiderseits ausgerandet. Pronotum und Mesonotum seitlich gerandet. Letzterer vorne und in der Mitte mit schwacher mittlerer Erhabenheit. Nahte scharf. Einschnuerung etwas schwaecher als bei ferruginea. Dornen massig lang, an der Basis ziemlich dick, in ihren folgenden 2 / 3 recht duenn, fast parallel und fast horizontal nach hinten gerichtet. Erstes Stielchenglied verkehrt trapezfoermig, mit gerundeten Vorderecken, etwas kuerzer als vorne breit, unten ohne Zahn. Zweites Glied durch eine tiefe, breite Rinne in zwei Halbkugeln getheilt. Abdomen gleichmaessiger breit, weniger herzfoermig als bei den meisten Arten.
Wangen, Seiten des Clypeus und der Stirne laengsgestreift. Der uebrige Kopf glatt und glaenzend, zerstreut punktirt. Der ganze uebrige Koerper ziemlich glaenzend, fein und seicht genetztgerunzelt; nur ein Theil des Thoraxrueckens ziemlich glatt.
Abstehende Behaarung fast ganz fehlend (einige wenige spitze Haare; ein Haarkranz am Clypeusrand). Schienen und Schaefte nur anliegend behaart. Anliegende Behaarung aeusserst fein und zerstreut.
Schmutzig gelblichbraun. Kopf, Thorax und Fuehlerkeule dunkler braeunlich.
Suedabessinien (Hg).
description: Published as part of Forel, A., 1894, Abessinische und andere afrikanische Ameisen, gesammelt von Herrn Ingenieur Alfred Ilg, von Herrn Dr. Liengme, von Herrn Pfarrer Missionar P. Berthoud, Herrn Dr. Arth. Müller, etc., pp. 64-100 in Mitteilungen der Schweizerischen Entomologischen Gesellschaft 9 on pages 97-98, DOI: 10.5281/zenodo.14259
VHE Astronomy before the New Millenium
Creators: name: Weekes, Trevor C.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A report on the observational status of VHE astronomy is given.
description: 13 pages, no figures, to appear in "GeV-TeV Astrophysics: Toward a Major Atmospheric Cherenkov Telescope VI," Snowbird, Utah (August, 1999)
Questionnaire
Creators: name: Triono, Muhammad Andi Abdillah
name: Ermiati, Cut
name: Sihombing, Humisar
name: Ahmad, Selamat Triono
Publisher: name: figshare
Year: 2021
Subjects: subject: 150314 Small Business Management
subject: FOS: Economics and business

description: From June 1, 2020, to October 25, 2020, questionnaires were sent to 466 SMEs in the production sector spread across 21 districts in Medan City by post and electronically based on mobile phone numbers via WhatsApp or SMS applications. The questionnaire was addressed to one owner or business leader to fill out and return the questionnaire completely, either manually by post or by simply filling in online via google form https://forms.gle/KhWRGTYW6hSKBbbWA.
Qualitative properties of scalar-tensor theories of Gravity
Creators: name: Coley, A. A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The qualitative properties of spatially homogeneous stiff perfect fluid and minimally coupled massless scalar field models within general relativity are discussed. Consequently, by exploiting the formal equivalence under conformal transformations and field redefinitions of certain classes of theories of gravity, the asymptotic properties of spatially homogeneous models in a class of scalar-tensor theories of gravity that includes the Brans-Dicke theory can be determined. For example, exact solutions are presented, which are analogues of the general relativistic Jacobs stiff perfect fluid solutions and vacuum plane wave solutions, which act as past and future attractors in the class of spatially homogeneous models in Brans-Dicke theory.
description: 19 pages
Imprint of Reionization on the Cosmic Microwave Background Bispectrum
Creators: name: Cooray, Asantha R.
name: Hu, Wayne
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study contributions to the cosmic microwave background (CMB) bispectrum from non-Gaussianity induced by secondary anisotropies during reionization. Large-scale structure in the reionized epoch both gravitational lenses CMB photons and produces Doppler shifts in their temperature from scattering off electrons in infall. The resulting correlation is potentially observable through the CMB bispectrum. The second-order Ostriker-Vishniac also couples to a variety of linear secondary effects to produce a bispectrum. For the currently favored flat cosmological model with a low matter content and small optical depth in the reionized epoch $τ\la 0.3$, however, these bispectrum contributions are well below the detection threshold of MAP and at or below that of Planck, given their cosmic and noise variance limitations. At the upper end of this range, they can serve as an extra source of noise for measurements with Planck of either primordial nongaussianity or that induced by the correlation of gravitational lensing with the integrated Sachs-Wolfe and the thermal Sunyaev-Zel'dovich effects. We include a discussion of the general properties of the CMB bispectrum, its configuration dependence for the various effects, and its computation in the Limber approximation and beyond.
description: 17 pages, 10 figures (with emulateapj.sty); submitted to ApJ
Effect of High Frame Rates on 3D Video Quality of Experience
Creators: name: Banitalebi-Dehkordi, Amin
name: Pourazad, Mahsa T.
name: Nasiopoulos, Panos
Publisher: name: arXiv
Year: 2018
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we study the effect of 3D videos with increased frame rates on the viewers quality of experience. We performed a series of subjective tests to seek the subjects preferences among videos of the same scene at four different frame rates: 24, 30, 48, and 60 frames per second (fps). Results revealed that subjects clearly prefer higher frame rates. In particular, Mean Opinion Score (MOS) values associated with the 60 fps 3D videos were 55% greater than MOS values of the 24 fps 3D videos.
Coleman-Weinberg Phase Transition in Two-Scalar Models
Creators: name: Bornholdt, S.
name: Tetradis, N.
name: Wetterich, C.
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the Coleman-Weinberg phase transition in regions outside the validity of perturbation theory. For this purpose we study a Euclidean field theory with two scalars and discrete symmetry in four dimensions. The phase diagram is established by a numerical solution of a suitable truncation of exact non-perturbative flow equations. We find regions in parameter space where the phase transition (in dependence on the mass term) is of the second or the first order, separated by a triple point. Our quantitative results for the first order phase transition compare well to the standard perturbative Coleman-Weinberg calculation of the effective potential.
description: 14 pages, Oxford OUTP 94-14 P, Heidelberg HD-THEP-94-15
Additional file 3: of The gut bacteria across life stages in the synanthropic fly Chrysomya megacephala
Creators: name: Wang, Xiaoyun
name: Gao, Qiao
name: Wang, Wanqiang
name: Wang, Xiaoping
name: Lei, Chaoliang
name: Zhu, Fen
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Figure S1. Rarefaction curve based on OTUs. Mothur (v1.31.2) were used to calculate indices for rareaction curve based on observed species values. (DOCX 130 kb)
Inverted hysteresis and negative remanence in a homogeneous antiferromagnet
Creators: name: Opherden, L.
name: Bilitewski, T.
name: Hornung, J.
name: Herrmannsdörfer, T.
name: Samartzis, A.
name: Islam, A. T. M. N.
name: Anand, V. K.
name: Lake, B.
name: Moessner, R.
name: Wosnitza, J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic remanence - found in bar magnets or magnetic storage devices - is probably the oldest and most ubiquitous phenomenon underpinning technological applications of magnetism. It is a macroscopic non-equilibrium phenomenon: a remanent magnetisation appears when a magnetic field is applied to an initially unmagnetised ferromagnet, and then taken away. Here, we present an inverted magnetic hysteresis loop in the pyrochlore compound Nd$_2$Hf$_2$O$_7$: the remanent magnetisation points in a direction opposite to the applied field. This phenomenon is exquisitely tunable as a function of the protocol in field and temperature, and it is reproducible as in a quasi-equilibrium setting. We account for this phenomenon in considerable detail in terms of the properties of non-equilibrium population of domain walls which exhibit a magnetic moment between domains of an ordered antiferromagnetic state which itself has zero net magnetisation. Properties and (non-equilibrium) dynamics of topological defects play an important role in modern spintronics, and our study adds an instance where a uniform field couples selectively to domain walls rather than the bulk.
description: 5 pages, 3 figures in main article and 7 pages, 13 figures in supplementary materials
D8.2 Data Management Plan
Creators: name: Margariti, Evangelia Vangeli
name: Ververidis, Dimitrios
name: Nikolopoulos, Spiros
name: Liapis, Antonios
name: Bava, Vittoria
Publisher: name: Zenodo
Year: 2021
Subjects: Data management
GDPR
Data minimisation
FAIR

description: This deliverable presents the guidelines for the data collection, storage and ownership for all PrismArch activities. Additionally, it defines and ensures that all collected data are intended to be processed, in a manner relevant and limited solely to the purposes of PrismArch. Finally, it foresees the essential security measures that will be implemented to prevent unauthorized access to personal data or the equipment used for their processing.
Searches for HI in the Outer Parts of Four Dwarf Spheroidal Galaxies
Creators: name: Young, L. M.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Previous searches for atomic gas in our Galaxy's dwarf spheroidal companions have not been complete enough to settle the question of whether or not these galaxies have HI, especially in their outer parts. We present new observations of the dwarf spheroidals Sextans, Leo I, Ursa Minor, and Draco, using the NRAO 140-foot telescope to search much farther in radius than has been done before. The new data go out to at least 2.5 times the core radius in all cases, and well beyond even the tidal radius in two cases. These observations give HI column density limits of 2-6 x 10^17 atoms cm^-2. Unless HI is quite far from the galaxies' centers, we conclude that these galaxies don't contain significant amounts of atomic gas at the present time. We discuss whether the observations could have missed some atomic gas.
description: To appear in A.J
SAT Solving Using XOR-OR-AND Normal Forms
Creators: name: Andraschko, Bernhard
name: Danner, Julian
name: Kreuzer, Martin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Commutative Algebra (math.AC)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 03B70 (Primary) 13P15, 05C90, 94A60 (Secondary)

description: This paper introduces the XOR-OR-AND normal form (XNF) for logical formulas. It is a generalization of the well-known Conjunctive Normal Form (CNF) where literals are replaced by XORs of literals. As a first theoretic result, we show that every CNF formula is equisatisfiable to a formula in 2-XNF, i.e., a formula in XNF where each clause involves at most two XORs of literals. Subsequently, we present an algorithm which converts Boolean polynomials efficiently from their Algebraic Normal Form (ANF) to formulas in 2-XNF. Experiments with the cipher ASCON-128 show that cryptographic problems, which by design are based strongly on XOR-operations, can be represented using far fewer variables and clauses in 2-XNF than in CNF. In order to take advantage of this compact representation, new SAT solvers based on input formulas in 2-XNF need to be designed. By taking inspiration from graph-based 2-CNF SAT solving, we devise a new DPLL-based SAT solver for formulas in 2-XNF. Among others, we present advanced pre- and in-processing techniques. Finally, we give timings for random 2-XNF instances and instances related to key recovery attacks on round reduced ASCON-128, where our solver outperforms state-of-the-art alternative solving approaches.
description: 27 pages, 3 figures; revised version; source code available at http://github.com/j-danner/2xnf_sat_solving
Forecasting Future Humphrey Visual Fields Using Deep Learning
Creators: name: Wen, Joanne C.
name: Lee, Cecilia S.
name: Keane, Pearse A.
name: Xiao, Sa
name: Wu, Yue
name: Rokem, Ariel
name: Chen, Philip P.
name: Lee, Aaron Y.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Purpose: To determine if deep learning networks could be trained to forecast a future 24-2 Humphrey Visual Field (HVF). Participants: All patients who obtained a HVF 24-2 at the University of Washington. Methods: All datapoints from consecutive 24-2 HVFs from 1998 to 2018 were extracted from a University of Washington database. Ten-fold cross validation with a held out test set was used to develop the three main phases of model development: model architecture selection, dataset combination selection, and time-interval model training with transfer learning, to train a deep learning artificial neural network capable of generating a point-wise visual field prediction. Results: More than 1.7 million perimetry points were extracted to the hundredth decibel from 32,443 24-2 HVFs. The best performing model with 20 million trainable parameters, CascadeNet-5, was selected. The overall MAE for the test set was 2.47 dB (95% CI: 2.45 dB to 2.48 dB). The 100 fully trained models were able to successfully predict progressive field loss in glaucomatous eyes up to 5.5 years in the future with a correlation of 0.92 between the MD of predicted and actual future HVF (p < 2.2 x 10 -16 ) and an average difference of 0.41 dB. Conclusions: Using unfiltered real-world datasets, deep learning networks show an impressive ability to not only learn spatio-temporal HVF changes but also to generate predictions for future HVFs up to 5.5 years, given only a single HVF.
Properties of Dust Grains in Planetary Nebulae -- I. The Ionized Region of NGC 6445
Creators: name: van Hoof, P. A. M.
name: Van de Steene, G. C.
name: Beintema, D. A.
name: Martin, P. G.
name: Pottasch, S. R.
name: Ferland, G. J.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we study new infrared spectra of the evolved planetary nebula NGC 6445 obtained with ISO. These data show that the thermal emission from the grains is very cool and has a low flux compared to H beta. A model of the ionized region is constructed, using the photo-ionization code CLOUDY 90.05. Based on this model, we show from depletions in the gas phase elements that little grain destruction can have occurred in the ionized region of NGC 6445. We also argue that dust-gas separation in the nebula is not plausible. The most likely conclusion is that grains are residing inside the ionized region of NGC 6445 and that the low temperature and flux of the grain emission are caused by the low luminosity of the central star and the low optical depth of the grains. This implies that the bulk of the silicon-bearing grains in this nebula were able to survive exposure to hard UV photons for at least several thousands of years, contradicting previously published results. A comparison between optical and infrared diagnostic line ratios gives a marginal indication for the presence of a t^2-effect in the nebula. However, the evidence is not convincing and other explanations for the discrepancy are also plausible. The off-source spectrum taken with ISO-LWS clearly shows the presence of a warm cirrus component with a temperature of 24 K as well as a very cold component with a temperature of 7 K. Since our observation encompasses only a small region of the sky, it is not clear how extended the 7 K component is and whether it contributed significantly to the FIRAS spectrum taken by COBE. Because our line of sight is in the galactic plane, the very cold component could be a starless core.
description: 36 pages, 8 tables, 7 figures, accepted for publication in ApJ
title: ADCO, Sixième cartulaire de Saint-Étienne de Dijon (1662), Cart. 30 (G 133), 441 folios, f. 770
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 770, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 770, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Charm as Probe of New Physics
Creators: name: Pakvasa, Sandip
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this talk I would like to discuss two aspects of charm physics. One is to show that many standard model predictions for rare decay modes (along with $D^0 -\bar{D}^0$ mixing and CP violation) are extremely small thus opening a window for new physics effects\cite{1}; and the other is to review the expectations from several plausible and interesting new physics possibilities.
description: 11 pages,UH-511-797-94,(talk presented at Charm 2000)
Model risk and techniques for controlling market parameters
Creators: name: Bonollo, M.
name: MORANDI, DONATELLA
name: PEDERZOLI, CHIARA
name: TORRICELLI, Costanza
Publisher: name: Dipartimento di Economia Marco Biagi - Universit� di Modena e Reggio Emilia
Year: 2007

description: The increasing use of internal market models for market risk assessment andmanagement promotes, in compliance with Basel II, better risk managementpractices but introduces at the same time the so called model risk. In the light of themany open issues connected to market risk, the aim of this paper is twofold. First, itoffers a formal analysis of model risk which is aimed to clarify quantification issuesand to illustrate the architecture of a control process for this type of risk. Animportant building block of such an architecture is the so called market parameterscontrol process, which is the focus of the present paper and consists of two differentphases: the definition of the data sources and the data retrieval forms, and thedefinition of the techniques for valuing variables (i.e. input model data) based onmarket data. Second, this paper proposes a market parameters control process and its implementation within an important Italian bank, namely Gruppo Banco Popolare.Specifically, by focusing on equity market risk, this paper illustrates the whole organization process needed to set up and implement the market parameters control techniques, which imply first controlling for integrity (existence, domain, homogeneity) and outliers and then performing benchmarking activities. Special emphasis is placed on the so-called second level parameters, which do not have official quotes and still are fundamental especially in valuing non linear positions (e.g. volatility). These activities are based on mathematical-statistical models, whose implementation has required the development of specific software and IT solutions and the adoption of an articulate organizational structure.
Low Energy Leptogenesis in Left-Right Symmetric Models
Creators: name: Ganguly, Avijit
name: Parikh, Jitendra C.
name: Sarkar, Utpal
Publisher: name: arXiv
Year: 1994
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a new mechanism for baryogenesis. We study the effective potential of left-right extension of the standard model and show that there can be a first order phase transition at the left-right symmetry breaking and hence $(B-L)$ symmetry breaking scale, which is around TeV in our scenario. As a result, although $(B-L)$ violating interactions are in equilibrium at this scale, enough $(B-L)$ asymmetry may be generated. This $(B-L)$ asymmetry is then converted to baryon asymmetry during the anomalous electroweak process. If right handed gauge bosons are seen in the TeV scale, then we argue that this will be the only consistent mechanism to generate baryon asymmetry of the universe.
description: 16 pages (Latex file) - 1 postscript figure appended
Simulation and Calibration of a Fully Bayesian Marked Multidimensional Hawkes Process with Dissimilar Decays
Creators: name: Lim, Kar Wai
name: Lee, Young
name: Hanlen, Leif
name: Zhao, Hongbiao
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We propose a simulation method for multidimensional Hawkes processes based on superposition theory of point processes. This formulation allows us to design efficient simulations for Hawkes processes with differing exponentially decaying intensities. We demonstrate that inter-arrival times can be decomposed into simpler auxiliary variables that can be sampled directly, giving exact simulation with no approximation. We establish that the auxiliary variables provides information on the parent process for each event time. The algorithm correctness is shown by verifying the simulated intensities with their theoretical moments. A modular inference procedure consisting of Gibbs samplers through the auxiliary variable augmentation and adaptive rejection sampling is presented. Finally, we compare our proposed simulation method against existing methods, and find significant improvement in terms of algorithm speed. Our inference algorithm is used to discover the strengths of mutually excitations in real dark networks.
description: 24 pages, long version of ACML paper with supplementary material
Research Questionnaire on Google Form
Creators: name: Triono, Muhammad Andi Abdillah
name: Ahmad, Selamat Triono
name: Ermiati, Cut
name: Sihombing, Humisar
Publisher: name: figshare
Year: 2021
Subjects: subject: 150314 Small Business Management
subject: FOS: Economics and business

description: From June 1, 2020, to October 25, 2020, this questionnaires were sent to 466 SMEs in the production sector spread across 21 districts in Medan City by post and electronically based on mobile phone numbers via WhatsApp or SMS applications. The questionnaire was addressed to one owner or business leader to fill out and return the questionnaire completely, either manually by post or by simply filling in online via google form https://forms.gle/KhWRGTYW6hSKBbbWA.
The dwarf spheroidal galaxy DDO 44: stellar populations and distance
Creators: name: Karachentsev, I. D.
name: Sharina, M. E.
name: Grebel, E. K.
name: Dolphin, A. E.
name: Geisler, D.
name: Guhathakurta, P.
name: Hodge, P. W.
name: Karachentseva, V. E.
name: Sarajedini, A.
name: Seitzer, P.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present ground-based and HST WFPC2 imaging of the nearby low surface brightness dwarf spheroidal galaxy DDO 44. For the first time DDO 44 was resolved into stars. The resulting color-magnitude diagram for about 1290 stars shows the red giant branch with a tip at I=(23.55+-0.15) mag, which yields a distance of (3.2+-0.2) Mpc consistent with membership of DDO 44 in the NGC 2403 group. The linear separation of DDO 44 from NGC 2403 is 75 kpc on the sky and (30+-450) kpc along the line of sight. The relationship between the dwarf galaxy's absolute R magnitude of -13.1 mag, its central surface brightness of 24.1 mag/square arcsec, and its mean metallicity of -1.7 dex follow the trend for other nearby dwarf spheroidal galaxies. One globular cluster candidate has also been identified in DDO 44.
description: Astronomy & Astrophysics Main Journal, accepted. 7 figures (2 jpg images, 5 postscript files)