cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Proper actions on corank-one reductive homogeneous spaces
Creators: name: Kassel, Fanny
Publisher: name: arXiv
Year: 2008
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20G25; 22E40; 57S30

description: Let k be a local field and G the set of k-points of a connected semisimple algebraic k-group of rank one. We describe all torsion-free discrete subgroups of G\times G acting properly discontinuously on G by left and right multiplication. To this end, we prove a general result on the Cartan projection of discrete groups acting properly discontinuously on corank-one reductive homogeneous spaces over k.
description: 17 pages
Analysis of Spitzer Spectra of Irradiated Planets: Evidence for Water Vapor?
Creators: name: Fortney, Jonathan J.
name: Marley, Mark S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Published mid infrared spectra of transiting planets HD 209458b and HD 189733b, obtained during secondary eclipse by the InfraRed Spectrograph (IRS) aboard the Spitzer Space Telescope, are predominantly featureless. In particular these flux ratio spectra do not exhibit an expected feature arising from water vapor absorption short-ward of 10 um. Here we suggest that, in the absence of flux variability, the spectral data for HD 189733b are inconsistent with 8 um-photometry obtained with Spitzer's InfraRed Array Camera (IRAC), perhaps an indication of problems with the challenging reduction of the IRS spectra. The IRAC point, along with previously published secondary eclipse photometry for HD 189733b, are in good agreement with a one-dimensional model of HD 189733b that clearly shows absorption due to water vapor in the emergent spectrum. We are not able to draw firm conclusions regarding the IRS data for HD 209458b, but spectra predicted by 1D and 3D atmosphere models fit the data adequately, without adjustment of the water abundance or reliance on cloud opacity. We argue that the generally good agreement between model spectra and IRS spectra of brown dwarfs with atmospheric temperatures similar to these highly irradiated planets lends confidence in the modeling procedure.
description: Revised, Accepted to ApJ Letters
Linking Jet Emission, X-ray States and Hard X-ray Tails in the Neutron Star X-ray Binary GX 17+2
Creators: name: Migliari, S.
name: Miller-Jones, J. C. A.
name: Fender, R. P.
name: Homan, J.
name: Di Salvo, T.
name: Rothschild, R. E.
name: Rupen, M. P.
name: Tomsick, J. A.
name: Wijnands, R.
name: van der Klis, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results from simultaneous radio (Very Large Array) and X-ray (Rossi-X-ray Timing Explorer) observations of the Z-type neutron star X-ray binary GX~17+2. The aim is to assess the coupling between X-ray and radio properties throughout its three rapidly variable X-ray states and during the time-resolved transitions. These observations allow us, for the first time, to investigate quantitatively the possible relations between the radio emission and the presence of the hard X-ray tails and the X-ray state of the source. The observations show: 1) a coupling between the radio jet emission and the X-ray state of the source, i.e. the position in the X-ray hardness-intensity diagram (HID); 2) a coupling between the presence of a hard X-ray tail and the position in the HID, qualitatively similar to that found for the radio emission; 3) an indication for a quantitative positive correlation between the radio flux density and the X-ray flux in the hard-tail power law component; 4) evidence for the formation of a radio jet associated with the Flaring Branch-to-Normal Branch X-ray state transition; 5) that the radio flux density of the newly-formed jet stabilizes when also the normal-branch oscillation (NBO) in the X-ray power spectrum stabilizes its characteristic frequency, suggesting a possible relation between X-ray variability associated to the NBO and the jet formation. We discuss our results in the context of jet models.
description: Accepted by ApJ
On the nonlinear stochastic dynamics of a continuous system with discrete attached elements
Creators: name: Cunha, Americo
name: Sampaio, Rubens
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Dynamical Systems (math.DS)
subject: Applications (stat.AP)
subject: Computation (stat.CO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: I.6.6
subject: 70Lxx

description: This paper presents a theoretical study on the influence of a discrete element in the nonlinear dynamics of a continuous mechanical system subject to randomness in the model parameters. This system is composed by an elastic bar, attached to springs and a lumped mass, with a random elastic modulus and subjected to a Gaussian white-noise distributed external force. One can note that the dynamic behavior of the bar is significantly altered when the lumped mass is varied, becoming, on the right extreme and for large values of the concentrated mass, similar to a mass-spring system. It is also observed that the system response is more influenced by the randomness for small values of the lumped mass. The study conducted also show an irregular distribution of energy through the spectrum of frequencies, asymmetries and multimodal behavior in the probability distributions of the lumped mass velocity.
Yang-Mills Chern-Simons Corrections From the Pure Spinor Superstring
Creators: name: Bedoya, Oscar A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Nilpotency of the pure spinor BRST operator in a curved background implies superspace equations of motion for the background. By computing one-loop corrections to nilpotency for the heterotic sigma model, the Yang-Mills Chern-Simons corrections to the background are derived.
description: 25 pages, harvmac tex, 15 diagrams; references added
Additional file 2 of The Mag.num core field model as a parent for IGRF-13, and the recent evolution of the South Atlantic Anomaly
Creators: name: M. Rother
name: M. Korte
name: A. Morschhauser
name: F. Vervelidou
name: J. Matzka
name: C. Stolle
Publisher: name: figshare
Year: 2021
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Inorganic Chemistry
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2. Field intensity for 2013.0 and 2020.0 and vertical component for 2020.0 in the SAA region at 6 levels from Earth’s surface down to the CMB.
Scalar fields in Causal Dynamical Triangulations
Creators: name: Ambjørn, Jan
name: Drogosz, Zbigniew
name: Gizbert-Studnicki, Jakub
name: Görlich, Andrzej
name: Jurkiewicz, Jerzy
name: Németh, Dániel
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A typical geometry extracted from the path integral of a quantum theory of gravity might be quite complicated in the UV region. Even if such a configuration is not physical, it may be of interest to understand the details of its nature, since some universal features can be important for the physics of the model. If the formalism describing the geometry is coordinate independent, such understanding may be facilitated by the use of suitable coordinate systems. In this article we use scalar fields that solve Laplace's equation to introduce coordinates on geometries with a toroidal topology. Using these coordinates we observe what we denote as the "cosmic voids and filaments" structure, even if no matter is present in the theory. We also show that if the scalar fields we used as coordinates are dynamically coupled to geometry, they can change it in a dramatic way.
description: 51 pages
Additional file 1 of Noise in Otolaryngology – Head and Neck Surgery operating rooms: a systematic review
Creators: name: Sampieri, Gianluca
name: Amirpouyan Namavarian
name: Levin, Marc
name: Philteos, Justine
name: Lee, Jong Wook
name: Koskinen, Anni
name: Lin, Vincent
name: Lee, John
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Science Policy

description: Additional file 1: Table S1. MeSH Terms used in Database Searches.
Supplementary document for Mechanical force induced luminescence ratiometric thermometry in CaZnOS:Dy3+ - 6525601.pdf
Creators: name: Li, Tao
name: leipeng, li
name: Li, Pei
name: Han, Yixiao
name: Cai, Chongyang
name: Yang, Yanmin
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplemental Document
Accumulation horizons and period-adding in optically injected semiconductor lasers
Creators: name: Bonatto, Cristian
name: Gallas, Jason A. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We study the hierarchical structuring of islands of stable periodic oscillations inside chaotic regions in phase diagrams of single-mode semiconductor lasers with optical injection. Phase diagrams display remarkable {\it accumulation horizons}: boundaries formed by the accumulation of infinite cascades of self-similar islands of periodic solutions of ever-increasing period. Each cascade follows a specific period-adding route. The riddling of chaotic laser phases by such networks of periodic solutions may compromise applications operating with chaotic signals such as e.g. secure communications.
description: 4 pages, 4 figures, laser phase diagrams, to appear in Phys. Rev. E, vol. 75
Memory Efficient 3D U-Net with Reversible Mobile Inverted Bottlenecks for Brain Tumor Segmentation
Creators: name: Pendse, Mihir
name: Thangarasa, Vithursan
name: Chiley, Vitaliy
name: Holmdahl, Ryan
name: Hestness, Joel
name: DeCoste, Dennis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: We propose combining memory saving techniques with traditional U-Net architectures to increase the complexity of the models on the Brain Tumor Segmentation (BraTS) challenge. The BraTS challenge consists of a 3D segmentation of a 240x240x155x4 input image into a set of tumor classes. Because of the large volume and need for 3D convolutional layers, this task is very memory intensive. To address this, prior approaches use smaller cropped images while constraining the model's depth and width. Our 3D U-Net uses a reversible version of the mobile inverted bottleneck block defined in MobileNetV2, MnasNet and the more recent EfficientNet architectures to save activation memory during training. Using reversible layers enables the model to recompute input activations given the outputs of that layer, saving memory by eliminating the need to store activations during the forward pass. The inverted residual bottleneck block uses lightweight depthwise separable convolutions to reduce computation by decomposing convolutions into a pointwise convolution and a depthwise convolution. Further, this block inverts traditional bottleneck blocks by placing an intermediate expansion layer between the input and output linear 1x1 convolution, reducing the total number of channels. Given a fixed memory budget, with these memory saving techniques, we are able to train image volumes up to 3x larger, models with 25% more depth, or models with up to 2x the number of channels than a corresponding non-reversible network.
description: 11 pages, 5 figures, Published at MICCAI Brainles 2020
From Ignition to Prediction- Comparison of Time Series Forecasting Methods on Real Data
Creators: name: Χατζηχριστοδούλου, Ζωή Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Πρόβλεψη χρονοσειρών
Ανάλυση χρονοσειρών
Σύγκριση μεθόδων
Time series forecasting
Prediction
Evaluation of methods

description: Engine temperature prediction is a vital function in automotive systems since it may help to prevent engine damage and extend vehicle life. The goal of this study is to create and test time series prediction models designed particularly for bus engine temperature estimates in Thessaloniki. By comparing the performance of sophisticated predictors, the research aims to illustrate the effectiveness of the proposed models in capturing the underlying patterns and dynamics of the bus engine time series. Furthermore, the study evaluates the potential of multivariate prediction models by benchmarking the results of univariate predictors. According to the results, the multivariate models surpass previous models in terms of accuracy. Furthermore, this work investigates the effect of training period durations on the prediction accuracy of these models and lastly, explores the efficiency of a streaming algorithm.
description: Η πρόβλεψη θερμοκρασίας κινητήρα είναι μια ζωτική λειτουργία στα συστήματα οχημάτων, καθώς μπορεί να βοηθήσει στην αποφυγή ζημιών του κινητήρα και να παρατείνει τη διάρκεια ζωής του οχήματος. Στόχος αυτής της μελέτης είναι η υλοποίηση και η δοκιμή μοντέλων πρόβλεψης χρονοσειρών με τη χρήση δεδομένων πραγματικού κόσμου και πιο αναλυτικά οχημάτων μαζικής μεταφοράς στη Θεσσαλονίκη. Συγκρίνοντας την απόδοση απλούστερων και πλέον εξελιγμένων προγνωστικών μοντέλων , η έρευνα στοχεύει να απεικονίσει την αποτελεσματικότητα των προτεινόμενων μοντέλων στην αποτύπωση των υποκείμενων μοτίβων και της δυναμικής της χρονοσειράς του κινητήρα. Επιπλέον, η μελέτη αξιολογεί τις δυνατότητες των μοντέλων πολυμεταβλητής πρόβλεψης συγκριτικά με τα αποτελέσματα των μονομεταβλητών προβλέψεων. Σύμφωνα με τα αποτελέσματα, τα πολυμεταβλητά μοντέλα ξεπερνούν τα προηγούμενα μοντέλα όσον αφορά την ακρίβεια. Επιπλέον, αυτή η εργασία διερευνά την επίδραση της διάρκειας της περιόδου εκπαίδευσης στην ακρίβεια πρόβλεψης αυτών των μοντέλων και, τέλος, διερευνά την αποτελεσματικότητα ενός αλγορίθμου ροής.
Gauge invariance and the CPT and Lorentz violating induced Chern-Simons-like term in extended QED
Creators: name: Scarpelli, A. P. Baeta
name: Sampaio, Marcos
name: Nemes, M. C.
name: Hiller, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The radiative induction of the CPT and Lorentz violating Chern-Simons (CS) term is reassessed. The massless and massive models are studied. Special attention is given to the preservation of gauge symmetry at higher orders in the background vector $b_μ$ when radiative corrections are considered. Both the study of the odd and even parity sectors of the complete vacuum polarization tensor at one-loop order and a non-perturbative analysis show that this symmetry must be preserved by the quantum corrections. As a complement we obtain that transversality of the polarization tensor does not fix the value of the coefficient of the induced CS term.
description: 10 pages, no figures
The nuclear environment of NGC 2442: a Compton-thick low-luminosity AGN
Creators: name: da Silva, Patrícia
name: Menezes, R. B.
name: Díaz, Y.
name: López-Navas, E.
name: Steiner, J. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The detailed study of nuclear regions of galaxies is important because it can help understanding the active galactic nucleus (AGN) feedback mechanisms, the connections between the nuclei and their host galaxies, and ultimately the galaxy formation processes. We present the analysis of an optical data cube of the central region of the galaxy NGC 2442, obtained with the integral field unit (IFU) of the Gemini Multi-Object Spectrograph (GMOS). We also performed a multiwavelength analysis, with Chandra data, XMM--Newton and NuSTAR spectra, and Hubble Space Telescope (HST) images. The analysis revealed that the nuclear emission is consistent with a Low Ionization Nuclear Emission-line Region (LINER) associated with a highly obscured compact hard X-ray source, indicating a Compton-thick AGN. The HST image in the F658N filter (H$α$) reveals an arched structure corresponding to the walls of the ionization cone of the AGN. The gas kinematic pattern and the high gas velocity dispersion values in the same region of the ionization cone suggest an outflow emission. The stellar archaeology results indicate the presence of only old stellar populations ($\sim$ 10 Gyr), with high metallicity (z = 0.02 and 0.05), and the absence of recent star formation in the central region of NGC 2442, which is possibly a consequence of the AGN feedback, associated with the detected outflow, shutting off star formation. NGC 2442 is a late-type galaxy similar to the Milky Way, and comparisons show that the main difference between them is the presence of a low-luminosity AGN.
description: 13 pages, 13 figures, 1 table, published in MNRAS
Densities, Parton Distributions, and Measuring the Non-Spherical Shape of the Nucleon
Creators: name: Miller, Gerald A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Spin-dependent quark densities, matrix elements of specific density operators in proton states of definite spin-polarization, indicate that the nucleon may harbor an infinite variety of non-spherical shapes. We show that these matrix elements are closely related to specific transverse momentum dependent parton distributions accessible in the angular dependence of the semi-inclusive processes electron plus proton goes to electron plus pion plus anything, and the Drell-Yan reaction proton plus proton goes to a lepton anti-lepton pair plus anything. New measurements or analyses would allow the direct exhibition of the non-spherical nature of the proton.
description: 7 pages, two figures
Vacuum Instabilities in the N2HDM
Creators: name: Ferreira, P. M.
name: Mühlleitner, Margarete
name: Santos, Rui
name: Weiglein, Georg
name: Wittbrodt, Jonas
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019
Subjects: vacuum: stability
Higgs particle: doublet
vacuum state
tunneling
structure
lifetime
singlet

description: The Higgs sector of the Next-to-Minimal Two-Higgs-Doublet Model (N2HDM) is obtained from the Two-Higgs-Doublet Model (2HDM) containing two complex Higgs doublets, by adding a real singlet field. In this paper, we analyse the vacuum structure of the N2HDM with respect to the possibility of vacuum instabilities. We show that while one type of charge- and CP-preserving vacuum cannot coexist with deeper charge- or CP-breaking minima, there is another type of vacuum whose stability is endangered by the possible occurrence of deeper charge- and CP-breaking minima. Analytical expressions relating the depth of different vacua are deduced. Parameter scans of the model are carried out that illustrate the regions of parameter space here the vacuum is either stable or metastable as well as the regions where tunnelling to deeper vacua gives rise to a too short lifetime of the vacuum. Taking other experimental and theoretical constraints into account, we find that the vacuum stability constraints have an important impact on the phenomenology of the N2HDM.
Additional file 1 of Residential exposure to air pollution and access to neighborhood greenspace in relation to hair cortisol concentrations during the second and third trimester of pregnancy
Creators: name: Verheyen, Veerle Josefa
name: Remy, Sylvie
name: Lambrechts, Nathalie
name: Govarts, Eva
name: Colles, Ann
name: Poelmans, Lien
name: Verachtert, Els
name: Lefebvre, Wouter
name: Monsieurs, Pieter
name: Vanpoucke, Charlotte
name: Nielsen, Flemming
name: Eeden, Lena Van Den
name: Jacquemyn, Yves
name: Schoeters, Greet
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Table S1. Univariate analysis of variance of possible covariates of hair cortisol concentrations. Table S2. Interactions of air pollutant exposure, distance to major roads with access to neighborhood greenspace in relation to hair cortisol concentrations. Table S3. Associations of 1-year mean residential air pollutant concentrations with hair cortisol concentrations. Table S4. Associations of residential exposures with hair cortisol concentrations, models additionally adjusted for daily hair washing. Table S5. Associations of residential exposures with hair cortisol concentrations, models additionally adjusted for age, pre-pregnancy BMI, personal and neighborhood SES. Table S6. Associations of residential exposures with hair cortisol concentrations, participants of non-European origin excluded
Adaptive numerical simulations with Trixi.jl: A case study of Julia for scientific computing
Creators: name: Ranocha, Hendrik
name: Schlottke-Lakemper, Michael
name: Winters, Andrew R.
name: Faulhaber, Erik
name: Chan, Jesse
name: Gassner, Gregor J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Software (cs.MS)
subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We present Trixi.jl, a Julia package for adaptive high-order numerical simulations of hyperbolic partial differential equations. Utilizing Julia's strengths, Trixi.jl is extensible, easy to use, and fast. We describe the main design choices that enable these features and compare Trixi.jl with a mature open source Fortran code that uses the same numerical methods. We conclude with an assessment of Julia for simulation-focused scientific computing, an area that is still dominated by traditional high-performance computing languages such as C, C++, and Fortran.
Relativistic bubble collisions -- a closer look
Creators: name: Jinno, Ryusuke
name: Konstandin, Thomas
name: Takimoto, Masahiro
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019

description: We study scalar bubble collisions in first-order phase transitions focusing on the relativistic limit. We propose 'trapping equation' which describes the wall behavior after collision, and test it with numerical simulations in several setups. We also examine the energy dynamics after collision and discuss its implications to gravitational wave production.
Detecting transits from Earth-sized planets around Sun-like stars
Creators: name: Carpano, S.
name: Fridlund, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context. Detecting regular dips in the light curve of a star is an easy way to detect the presence of an orbiting planet. COROT is a Franco-European mission launched at the end of 2006, and one of its main objectives is to detect planetary systems using the transit method. Aims. In this paper, we present a new method for transit detection and determine the smallest detected planetary radius, assuming a parent star like the Sun. Methods. We simulated light curves with Poisson noise and stellar variability, for which data from the VIRGO/PMO6 instrument on board SoHO were used. Transits were simulated using the UTM software. Light curves were denoised by the mean of a low-pass and a high-pass filter. The detection of periodic transits works on light curves folded at several trial periods with the particularity that no rebinning is performed after the folding. The best fit was obtain when all transits are overlayed, i.e when the data are folded at the right period. Results. Assuming a single data set lasting 150d, transits from a planet with a radius down to 2 Rearth can be detected. The efficiency depends neither on the transit duration nor on the number of transits observed. Furthermore we simulated transits with periods close to 150d in data sets containing three observations of 150d, separated by regular gaps with the same length. Again, planets with a radius down to 2 Rearth can be detected. Conclusions. Within the given range of parameters, the detection efficiency depends slightly on the apparent magnitude of the star but neither on the transit duration nor the number of transits. Furthermore, multiple observations might represent a solution for the COROT mission for detecting small planets when the orbital period is much longer than the duration of a single observation.
description: 7 pages, 10 figures, accepted in A&A
CaStLeS (Compute and Storage for the Life Sciences): a collection of compute and storage resources for supporting research at the University of Birmingham
Creators: name: Thompson, Simon J.
name: Thompson, Stephanie E.M.
name: Cazier, Jean-Baptiste
Publisher: name: Zenodo
Year: 2019
Subjects: hpc
high performance computing
life sciences
storage
cloud
virtual machine

description: Life Sciences researchers increasingly rely on advanced computing and storage facilities to support their work. Whether this be storage to retain images from high resolution microscopy for later processing, or powerful CPU compute resources to complete bioinformatics analysis, well-resourced and managed systems are essential to support leading research. The rapidly expanding interest in Data Sciences and AI is also rendering more prevalent the need to support the application and development of novel methods for data analysis. This paper outlines the strategic facilities made available by the University of Birmingham to support Life Sciences research.
A GLIMPSE into the Nature of Galactic Mid-IR Excesses
Creators: name: Uzpen, B.
name: Kobulnicky, H. A.
name: Semler, D. R.
name: Bensby, T.
name: Thom, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the nature of the mid-IR excess for 31 intermediate-mass stars that exhibit an 8 micron excess in either the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire or the Mid-Course Space Experiment using high resolution optical spectra to identify stars surrounded by warm circumstellar dust. From these data we determine projected stellar rotational velocities and estimate stellar effective temperatures for the sample. We estimate stellar ages from these temperatures, parallactic distances, and evolutionary models. Using MIPS [24] measurements and stellar parameters we determine the nature of the infrared excess for 19 GLIMPSE stars. We find that 15 stars exhibit Halpha emission and four exhibit Halpha absorption. Assuming that the mid-IR excesses arise in circumstellar disks, we use the Halpha fluxes to model and estimate the relative contributions of dust and free-free emission. Six stars exhibit Halpha fluxes that imply free-free emission can plausibly explain the infrared excess at [24]. These stars are candidate classical Be stars. Nine stars exhibit Halpha emission, but their Halpha fluxes are insufficient to explain the infrared excesses at [24], suggesting the presence of a circumstellar dust component. After the removal of the free-free component in these sources, we determine probable disk dust temperatures of Tdisk~300-800 K and fractional infrared luminosities of L(IR)/L(*)~10^-3. These nine stars may be pre-main-sequence stars with transitional disks undergoing disk clearing. Three of the four sources showing Halpha absorption exhibit circumstellar disk temperatures ~300-400 K, L(IR)/L(*)~10^-3, IR colors K-[24]< 3.3, and are warm debris disk candidates. One of the four Halpha absorption sources has K-[24]> 3.3 implying an optically thick outer disk and is a transition disk candidate.
description: 17 figures. Accepted for publication in ApJ
The Number of Different Binary Functions Generated by NK-Kauffman Networks and the Emergence of Genetic Robustness
Creators: name: Romero, David
name: Zertuche, Federico
Publisher: name: arXiv
Year: 2007
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We determine the average number $ \vartheta (N, K) $, of \textit{NK}-Kauffman networks that give rise to the same binary function. We show that, for $ N \gg 1 $, there exists a connectivity critical value $ K_c $ such that $ \vartheta(N,K) \approx e^{ϕN} $ ($ ϕ> 0 $) for $ K < K_c $ and $\vartheta(N,K) \approx 1 $ for $ K > K_c $. We find that $ K_c $ is not a constant, but scales very slowly with $ N $, as $ K_c \approx \log_2 \log_2 (2N / \ln 2) $. The problem of genetic robustness emerges as a statistical property of the ensemble of \textit{NK}-Kauffman networks and impose tight constraints in the average number of epistatic interactions that the genotype-phenotype map can have.
description: 4 figures 18 pages
The Different Regimes of Axion Gauge Field Inflation
Creators: name: Domcke, Valerie
name: Rodrigues Sandner, Stefan Marinus
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019
Subjects: coupling: gauge
gauge: nonabelian
gauge field theory: nonabelian
axion: decay constant
Chern-Simons term: abelian
interaction: nonlinear
inflation
cosmic background radiation
background
axion-like particles
string model
perturbation
Peccei-Quinn
stability
formation
monodromy
inflaton
horizon
tension

description: In axion gauge field inflation an axion-like particle driving cosmic inflation is coupled to the Chern-Simons density of an Abelian or non-Abelian gauge group. In the case of a non-Abelian gauge group, this can lead to the formation of a stable, homogeneous and isotropic gauge field background. We study the dynamics of the inflaton and gauge fields in terms of the two effective coupling parameters: the gauge coupling and the axion decay constant. Starting from the Bunch-Davies vacuum in the far past, we find that the non-trivial gauge field background arises only significantly after the cosmic microwave background (CMB) scales have left the horizon. At these scales, the model thus closely resembles Abelian axion inflation, thereby naturally reconciling the tension of non-Abelian axion gauge field inflation with the latest CMB observations. We further consider two exemplary UV-completions of this setup: multiple Peccei-Quinn axions and axion monodromy in string theory. In both cases we find that the majority of the parameter space is excluded by theoretical or observational constraints. The remaining parameter space can be divided into three regimes. (i) For small gauge couplings we recover natural inflation. For large gauge couplings the non-Abelian gauge theory either (ii) mimics the Abelian theory or (iii) non-linear interactions prohibit a linear analysis of the gauge field perturbations.
Towards Exploratory Landscape Analysis for Large-scale Optimization: A Dimensionality Reduction Framework
Creators: name: Tanabe, Ryoji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Although exploratory landscape analysis (ELA) has shown its effectiveness in various applications, most previous studies focused only on low- and moderate-dimensional problems. Thus, little is known about the scalability of the ELA approach for large-scale optimization. In this context, first, this paper analyzes the computational cost of features in the flacco package. Our results reveal that two important feature classes (ela_level and ela_meta) cannot be applied to large-scale optimization due to their high computational cost. To improve the scalability of the ELA approach, this paper proposes a dimensionality reduction framework that computes features in a reduced lower-dimensional space than the original solution space. We demonstrate that the proposed framework can drastically reduce the computation time of ela_level and ela_meta for large dimensions. In addition, the proposed framework can make the cell-mapping feature classes scalable for large-scale optimization. Our results also show that features computed by the proposed framework are beneficial for predicting the high-level properties of the 24 large-scale BBOB functions.
description: This is an accepted version of a paper published in the proceedings of GECCO 2021
Double parton scattering: theory developments
Creators: name: Diehl, Markus
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019

description: Parton Showers and Resummation 2019, PSR 2019, Vienna, Erwin Schrödinger Institut Wien, Austria, 11 Jun 2019 - 14 Jun 2019
description: I give a brief introduction into the double parton scatteringmechanism in proton-proton collisions, and then discuss several advances intheir theoretical description.  Aspects of both DGLAP and rapidity evolutionwill be covered.
Additional file 2 of High-intensity interval training and energy management education, compared with moderate continuous training and progressive muscle relaxation, for improving health-related quality of life in persons with multiple sclerosis: study protocol of a randomized controlled superiority trial with six months’ follow-up
Creators: name: Patt, Nadine
name: Kool, Jan
name: Hersche, Ruth
name: Oberste, Max
name: Walzik, David
name: Joisten, Niklas
name: Caminada, Daniel
name: Ferrara, Francesca
name: Gonzenbach, Roman
name: Nigg, Claudio Renato
name: Kamm, Christian Philipp
name: Zimmer, Philipp
name: Bansi, Jens
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 2.
Computed tomography grey-white matter ratio in an elderly population: Rationale and design of a retrospective cross-sectional study
Creators: name: Lang, Margareta
Publisher: name: Zenodo
Year: 2024

description: Margareta Lang, MDDepartment of Radiology,Helsingborg Hospital,251 87 Helsingborg, Sweden Phone: +46-42-4062826Fax: +46-42-4061208E-mail: margareta.lang@med.lu.se
Additional file 1 of Prevalence of antimicrobial resistance and its clinical implications in Ethiopia: a systematic review
Creators: name: Berhe, Derbew Fikadu
name: Beyene, Getachew Tesfaye
name: Seyoum, Berhanu
name: Gebre, Meseret
name: Haile, Kassa
name: Tsegaye, Mulugeta
name: Boltena, Minyahil Tadesse
name: Tesema, Emawayish
name: Kibret, Taddele Cherinet
name: Biru, Mulatu
name: Siraj, Dawd S.
name: Shirley, Daniel
name: Howe, Rawleigh
name: Abdissa, Alemseged
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 1. A detail account of all articles included in the review.
Positive and negative streamers in ambient air: modeling evolution and velocities
Creators: name: Luque, Alejandro
name: Ratushnaya, Valeria
name: Ebert, Ute
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We simulate short positive and negative streamers in air at standard temperature and pressure. They evolve in homogeneous electric fields or emerge from needle electrodes with voltages of 10 to 20 kV. The streamer velocity at given streamer length depends only weakly on the initial ionization seed, except in the case of negative streamers in homogeneous fields. We characterize the streamers by length, head radius, head charge and field enhancement. We show that the velocity of positive streamers is mainly determined by their radius and in quantitative agreement with recent experimental results both for radius and velocity. The velocity of negative streamers is dominated by electron drift in the enhanced field; in the low local fields of the present simulations, it is little influenced by photo-ionization. Though negative streamer fronts always move at least with the electron drift velocity in the local field, this drift motion broadens the streamer head, decreases the field enhancement and ultimately leads to slower propagation or even extinction of the negative streamer.
description: 18 pages, 10 figures
MPEC 2025-G61 : 2025 FZ22
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2025 FZ22

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.
Additional file 1 of High-intensity interval training and energy management education, compared with moderate continuous training and progressive muscle relaxation, for improving health-related quality of life in persons with multiple sclerosis: study protocol of a randomized controlled superiority trial with six months’ follow-up
Creators: name: Patt, Nadine
name: Kool, Jan
name: Hersche, Ruth
name: Oberste, Max
name: Walzik, David
name: Joisten, Niklas
name: Caminada, Daniel
name: Ferrara, Francesca
name: Gonzenbach, Roman
name: Nigg, Claudio Renato
name: Kamm, Christian Philipp
name: Zimmer, Philipp
name: Bansi, Jens
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 1.
Additional file 1 of Ultrasound-guided transmuscular quadratus lumborum block reduced postoperative opioids consumptions in patients after laparoscopic hepatectomy: a three-arm randomized controlled trial
Creators: name: Mengya Pang
name: Guoliang Sun
name: Weifeng Yao
name: Shaoli Zhou
name: Shen, Ning
name: Haofeng Liao
name: Hanbing Xie
name: Wanling Gao
name: Ge, Mian
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Science Policy

description: Additional file 1: Table S1. Patient Characteristics.
Comparative study of superconducting and normal-state anisotropy in Fe$_{1+y}$Te$_{0.6}$Se$_{0.4}$ superconductors with controlled amounts of interstitial excess Fe
Creators: name: Sun, Yue
name: Pan, Yongqiang
name: Zhou, Nan
name: Xing, Xiangzhuo
name: Shi, Zhixiang
name: Wang, Jinhua
name: Zhu, Zengwei
name: Sugimoto, Akira
name: Ekino, Toshikazu
name: Tamegai, Tsuyoshi
name: Kitano, Haruhisa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a systematic study of the superconducting (SC) and normal-state anisotropy of Fe$_{1+y}$Te$_{0.6}$Se$_{0.4}$ single crystals with controlled amounts of excess Fe ($y$ = 0, 0.07, and 0.14). The SC state anisotropy $γ_{H}$ was obtained by measuring the upper critical fields under high magnetic fields over 50 T for both $H\parallel ab$ and $H\parallel c$. On the other hand, the normal state anisotropy $γ_ρ$ was obtained by measuring the resistivity with current flowing in the $ab$ plane ($ρ_{ab}$) and along the $c$ axis ($ρ_c$). To precisely measure $ρ_{ab}$ and $ρ_c$ in the same part of a specimen avoiding the variation dependent on pieces or parts, we adopt a new method using a micro-fabricated bridge with an additional neck part along $c$ axis. The $γ_{H}$ decreases from a value dependent on the amount of excess Fe at $T_{\rm{c}}$ to a common value $\sim$ 1 at 2 K. The different $γ_{H}$ at $T_{\rm{c}}$ ($\sim$1.5 for $y$ = 0, and 2.5 for $y$ = 0.14) suggests that the anisotropy of effective mass $m_c^*/m_{ab}^*$ increases from $\sim$ 2.25 ($y$ = 0) to 6.25 ($y$ = 0.14) with the excess Fe. The almost isotropic $γ_{H}$ at low temperatures is due to the strong spin paramagnetic effect at $H\parallel ab$. By contrast, the $γ_ρ$ shows a much larger value of $\sim$ 17 ($y$ = 0) to $\sim$ 50 ($y$ = 0.14) at the temperature just above $T_{\rm{c}}$. Combined the results of $γ_{H}$ and $γ_ρ$ near $T_{\rm{c}}$, we found out that the discrepant anisotropies between the SC and normal states originates from a large anisotropy of scattering time $τ_{ab}$/$τ_c$ $\sim$ 7.8. The $τ_{ab}$/$τ_c$ is found to be independent of the excess Fe.
description: to be published in Phy. Rev. B
Setellia fascipennis
Creators: name: Kameneva, E. P.
name: Korneyev, V. A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Richardiidae
Setellia
Setellia fascipennis

description: Cephalia fascipennis Wiedemann, 1830 (fig. 1)
Valid name. Setellia fascipennis (Wiedemann, 1830) (Richardiidae).
Cephalia fascipennis Wiedemann, 1830: 469.
Setellia fascipennis; Hendel, 1911 a: 196, 1911 b: 17; Steyskal, 1968: 53.12.
Material. Holotype ♂: “ C. fascipennis / Wied / Brazils /Lund”, “Type” [red paper], “Mus. Westerm.” (ZMUK).
Remarks: This species was transferred to Setellia by Hendel (1911 a, b).
description: Published as part of Kameneva, E. P. & Korneyev, V. A., 2022, Identity Of Species Assigned To The Genus Cephalia (Diptera, Tephritoidea), pp. 447-462 in Zoodiversity 56 (6) on page 449, DOI: 10.15407/zoo2022.06.447, http://zenodo.org/record/10831280
Additional file 2 of Cell-free oxidized hemoglobin drives reactive oxygen species production and pro-inflammation in an immature primary rat mixed glial cell culture
Creators: name: Agyemang, Alex Adusei
name: Kvist, Suvi Vallius
name: Brinkman, Nathan
name: Gentinetta, Thomas
name: Illa, Miriam
name: Ortenlöf, Niklas
name: Holmqvist, Bo
name: Ley, David
name: Gram, Magnus
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Hematology
subject: Computational Biology

description: Additional file 2. Additional File Legends.
Additional file 1 of Guiding placement of health facilities using multiple malaria criteria and an interactive tool
Creators: name: Toh, Kok Ben
name: Millar, Justin
name: Psychas, Paul
name: Abuaku, Benjamin
name: Ahorlu, Collins
name: Oppong, Samuel
name: Koram, Kwadwo
name: Valle, Denis
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. Spatial distribution of the geospatial covariates and prediction uncertainty of prevalence. Figure of the spatial distribution of the five covariates chosen to model the malaria prevalence of Bunkpurugu-Yunyoo district. Additional figure of prediction uncertainty of malaria prevalence based on the GAM model.
Finance for silviculture in British Columbia
Creators: name: Olivotto, Giuseppe Gerrard
Publisher: name: University of British Columbia
Year: 2010

description: Government funding for silviculture in British Columbia has expanded recently, but remains well short of the level recommended by many foresters. This thesis contains a proposal to replace government funding with investment from capital markets. It describes the funding mechanism, analyzes the implications to government, and introduces a method of distributing investment funds through a system of competitive bidding between forest management companies. In return for their participation, investors and forest companies would both receive equity in future timber production. The thesis concludes that at a cost of foregoing 50% of its future stumpage revenue, government might replace its current spending on intensive forest management with a funding level from capital markets of $500 million to $800 million per year.
Additional file 2 of Ultrasound-guided transmuscular quadratus lumborum block reduced postoperative opioids consumptions in patients after laparoscopic hepatectomy: a three-arm randomized controlled trial
Creators: name: Mengya Pang
name: Guoliang Sun
name: Weifeng Yao
name: Shaoli Zhou
name: Shen, Ning
name: Haofeng Liao
name: Hanbing Xie
name: Wanling Gao
name: Ge, Mian
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Science Policy

description: Additional file 2: Table S2. Operation data.
Kibble mechanism for electroweak magnetic monopoles and magnetic fields
Creators: name: Patel, Teerthal
name: Vachaspati, Tanmay
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The vacuum manifold of the standard electroweak model is a three-sphere when one considers homogeneous Higgs field configurations. For inhomogeneous configurations we argue that the vacuum manifold is the Hopf fibered three sphere and that this viewpoint leads to general criteria to detect electroweak monopoles and Z-strings. We extend the Kibble mechanism to study the formation of electroweak monopoles and strings during electroweak symmetry breaking. The distribution of magnetic monopoles produces magnetic fields that have a spectrum $B_λ\propto λ^{-2}$, where $λ$ is a smearing length scale. Even as the magnetic monopoles annihilate due to the confining Z-strings, the magnetic field evolves with the turbulent plasma and may be relevant for cosmological observations.
description: 6 pages; 4 figures; v2: 6 pages, 5 figures -- updated references, additional figure and comments; v3: clarified topological arguments, included discussion of Hopf fibration, removed certain inaccuracies; v4:further clarified topological arguments and setup, updated abstract, references and comments, added table of contents and sectioning; v5: JHEP published version