cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The ASAS-SN Catalog of Variable Stars VIII: "Dipper" Stars in the Lupus Star-Forming Region
Creators: name: Bredall, J. W.
name: Shappee, B. J.
name: Gaidos, E.
name: Jayasinghe, T.
name: Vallely, P.
name: Stanek, K. Z.
name: Kochanek, C. S.
name: Gagné, J.
name: Hart, K.
name: Holoien, T. W. -S.
name: Prieto, J. L.
name: Van Saders, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Some young stellar objects such as T Tauri-like "dipper" stars vary due to transient partial occultation by circumstellar dust, and observations of this phenomenon inform us of conditions in the planet-forming zones close to these stars. Although many dipper stars have been identified with space missions such as $Kepler$/$K2$, ground-based telescopes offer longer term and multi-wavelength perspectives. We identified 11 dipper stars in the Lupus star forming region in data from the All-Sky Automated Survey for SuperNovae (ASAS-SN), and further characterized these using observations by the Las Cumbres Global Observatory Telescope (LCOGT) and the Transiting Exoplanet Survey Satellite $TESS$, as well as archival data from other missions. Dipper stars were identified from a catalog of nearby young stars and selected based on the statistical significance, asymmetry, and quasi-periodicity or aperiodicity of variability in their ASAS-SN light curves. All 11 stars lie above or red-ward of the zero-age main sequence and have infrared excesses indicating the presence of full circumstellar disks. We obtain reddening-extinction relations for the variability of 7 stars using our combined ASAS-SN-$TESS$ and LCOGT photometry. In all cases the slopes are below the ISM value, suggesting larger grains, and we find a tentative relation between the slope (grain size) and the $\text{K}_\text{s}-[22\:μ\text{m}]$ infrared color regarded as a proxy for disk evolutionary state.
description: In review in MNRAS. A video description can be seen here https://youtu.be/PIr4kWgeCBw
Microscopic Analysis of Low-Frequency Flux Noise in YBa$_2$Cu$_3$O$_7$ Direct Current Superconducting Quantum Interference Devices
Creators: name: Doenitz, D.
name: Straub, R.
name: Kleiner, R.
name: Koelle, D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We use low-temperature scanning electron microscopy combined with SQUID detection of magnetic flux to image vortices and to investigate low-frequency flux noise in YBa$_2$Cu$_3$O$_7$ thin film SQUIDs. The low-frequency flux noise shows a nonlinear increase with magnetic cooling field up to 60 $μ$T. This effect is explained by the surface potential barrier at the SQUID hole. By correlating flux noise data with the spatial distribution of vortices, we obtain information on spatial fluctuations of vortices on a microscopic scale, e.g. an average vortex hopping length of approximately 10 nm.
description: submitted to Applied Physics Letters
DEVELOPMENT AND IMPLEMENTATION OF AN ENHANCED OCCUPATIONAL HAZARD MANAGEMENT SYSTEM: CASE STUDY RWANDA SOCIAL SECURITY BOARD
Creators: name: MIZERO Jean Aime1 & Dr. BUGINGO Emmanuel, Ph.D.2
Publisher: name: Zenodo
Year: 2025

description: The study's main focus is the establishment of an intelligent software system augmented with Artificial Intelligence for improving occupational hazard management at RSSB, which is crucial in promoting safety and compliance with regulatory frameworks, particularly in risky organizations. The proposed system is intended to facilitate critical processes such as hazard reporting, risk assessment, and safety training, which have been major challenges due to manual handling. By leveraging technologies like data analytics, the system aims to enhance the accuracy, speed, and efficiency of identifying and controlling hazards. Current issues observed, analyzed, and discussed in the study include existing delays and inefficiencies in RSSB's work, data inaccuracies, and low user engagement. The proposed methodology follows a system analysis and design approach, incorporating automation and data integration to streamline processes. Drawing lessons on scaling up best practices in hazard management, the study recommends RSSB adopt a robust Hazard Management System. Such a system would address the current inefficiencies and provide a structured, technology-driven framework to ensure proactive and effective hazard management. The adoption of an HMS would not only improve the accuracy and timeliness of hazard reporting but also foster a culture of safety and compliance within the organization. By integrating advanced AI tools and analytics, RSSB can significantly enhance its capacity to manage occupational risks, ensuring a safer working environment for all stakeholders. This study provides actionable recommendations for policymakers, officials, and safety practitioners to prioritize and implement these improvements for sustainable workplace safety.
A low-mass stellar companion to the young variable star RZ Psc
Creators: name: Kennedy, Grant M.
name: Ginski, Christian
name: Kenworthy, Matthew A.
name: Benisty, Myriam
name: Henning, Thomas
name: van Holstein, Rob G.
name: Kral, Quentin
name: Ménard, François
name: Milli, Julien
name: Quiroga-Nuñez, Luis Henry
name: Rab, Christian
name: Stolker, Tomas
name: Sturm, Ardjan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: RZ Psc is a young Sun-like star with a bright and warm infrared excess that is occasionally dimmed significantly by circumstellar dust structures. Optical depth arguments suggest that the dimming events do not probe a typical sight line through the circumstellar dust, and are instead caused by structures that appear above an optically thick mid-plane. This system may therefore be similar to systems where an outer disk is shadowed by material closer to the star. Here we report the discovery that RZ Psc hosts a 0.12$M_\odot$ companion at a projected separation of 23au. We conclude that the disk must orbit the primary star. While we do not detect orbital motion, comparison of the angle of linear polarization of the primary with the companion's on-sky position angle provides circumstantial evidence that the companion and disc may not share the same orbital plane. Whether the companion severely disrupts the disc, truncates it, or has little effect at all, will require further observations of both the companion and disc.
description: MNRASL in press
Differences in sensitivity to environment depending on of oxytocin receptor (OXTR rs53576 )gene? A meta-analysis of gene-by-environment studies
Creators: name: Xioadi, Qu
name: Zhou, Min
name: Chen, Jie
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Life Sciences
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Although there have been numerous studies on OXTR rs53576 environmental interaction, the results of these studies are uneven. A single study may have sample errors, multiple correction issues, and a high false positive rate. And previous meta-analysis studies on gene environment interactions mainly focused on serotonin transporter genes (5-HRRLPR) and catecholamine methyltransferase (COMT) (Cao, 2019). Based on the research differences and methodological drawbacks mentioned above, the following will use meta-analysis method, weighted average effect values, and a merged large sample to estimate the G * E effect, explore the differences in environmental sensitivity of the oxytocin receptor gene OXTR rs53576, and further analyze the degree of G * E effect differences in different potential regulatory factors, such as environmental variable type, result domain, culture, race, age, and gender.
The role of small-scale surface motions in the transfer of twist to a solar jet from a remote stable flux rope
Creators: name: Joshi, Reetika
name: Schmieder, Brigitte
name: Aulanier, Guillaume
name: Bommier, Véronique
name: Chandra, Ramesh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Jets often have a helical structure containing ejected plasma that is both hot and also cooler and denser than the corona. Various mechanisms have been proposed to explain how jets are primarily attributed to a magnetic reconnection between the emergence of magnetic flux and environment or that of twisted photospheric motions that bring the system into a state of instability. Multi-wavelength observations of a twisted jet observed with AIA and IRIS were used to understand how the twist was injected into the jet. We followed the magnetic history of the active region based on the analysis of HMI vector magnetic field computed with the UNNOFIT code. This region is the result of the collapse of two emerging magnetic fluxes (EMFs) overlaid by arch filament systems that have been well-observed with AIA, IRIS, and NVST in H-alpha. In the magnetic field maps, we found evidence of the pattern of a long sigmoidal flux rope (FR) along the polarity inversion line between the two EMFs, which is the site of the reconnection. Before the jet, an extension of the FR was present and a part of it was detached and formed a small bipole with a bald patch (BP) region, which dynamically became an X-current sheet over the dome of one EMF where the reconnection took place. At the time of the reconnection, the Mg II spectra exhibited a strong extension of the blue wing that is decreasing over a distance of 10 Mm (from -300 km/s to a few km/s). This is the signature of the transfer of the twist to the jet. A comparison with numerical magnetohydrodynamics (MHD) simulations confirms the existence of the long FR. We conjecture that there is a transfer of twist to the jet during the extension of the FR to the reconnection site without FR eruption. There connection would start in the low atmosphere in the BP reconnection region and extend at an X-point along the current sheet formed above.
description: 22 pages, 13 figures, Astronomy and Astrophysics
Anthropic predictions: the case of the cosmological constant
Creators: name: Vilenkin, Alexander
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Anthropic models can give testable predictions, which can be confirmed or falsified at a specified confidence level. This is illustrated using the successful prediction of the cosmological constant as an example. The history and the nature of the prediction are reviewed. Inclusion of other variable parameters and implications for particle physics are briefly discussed.
description: 14 pages, 1 fugure. Contribution to "Universe or Multiverse", ed. by B.J. Carr, to be published by Cambridge University Press
Conference Andizhan.pdf
Creators: name: Kudratbek Makhmudov
Publisher: name: figshare
Year: 2020
Subjects: subject: Education
subject: 130106 Secondary Education
subject: FOS: Educational sciences

description: There are several factors including opening the door to the world, development, communicating and so on. But as an English (as FL) teacher what I’m going to analyze is teaching English at secondary education schools. Existing chances to analyze teaching methods, to produce new techniques and to discuss current issues of teaching and learning, which is for improving and developing the system, are great achievements of our education system, as well.
Fast flavor conversions in supernovae: the rise of mu-tau neutrinos
Creators: name: Capozzi, Francesco
name: Chakraborty, Madhurima
name: Chakraborty, Sovan
name: Sen, Manibrata
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Neutrinos in a core-collapse supernova can undergo fast flavor conversions with a possible impact on the explosion mechanism and nucleosynthesis. We perform the first non-linear simulations of fast conversions in the presence of three neutrino flavors. The recent supernova simulations with muon production call for such an analysis, as they relax the standard $ν_{μ,τ}=\barν_{μ,τ}$ (two-flavor) assumption. Our results show the significance of muon and tau lepton number angular distributions, together with the traditional electron lepton number ones. Indeed, our three-flavor results are potentially very different from two-flavor ones. These results strengthen the need to further investigate the occurrence of fast conversions in supernova simulation data, including the degeneracy breaking of mu and tau neutrinos.
description: 6 pages, 4 figures, comments welcome
Rare radiative leptonic decays B_{d,s}-> l^+l^-γ
Creators: name: Melikhov, Dmitri
name: Nikitin, Nikolai
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Long-distance QCD effects in $B_{d,s}\to\ell^+\ell^-γ$ decays are analyzed. We show that the contribution of the light vector-meson resonances related to the virtual photon emission from valence quarks of the $B$-meson, which was not considered in previous analyses, strongly influences the dilepton differential distrubution. Taking into account photon emission from the $b$-quark loop, weak annihilation, and Bremsstrahlung from leptons in the final state, we give predictions for dilepton spectrum in $B_{d, s}\to \ell^+\ell^-γ$ decays within the Standard model.
description: 8 pages, typoes corrected, replaced with the version to appear in Physical Review D
Thick Cloud Removal of Remote Sensing Images Using Temporal Smoothness and Sparsity-Regularized Tensor Optimization
Creators: name: Duan, Chenxi
name: Pan, Jun
name: Li, Rui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In remote sensing images, the presence of thick cloud accompanying cloud shadow is a high probability event, which can affect the quality of subsequent processing and limit the scenarios of application. Hence, removing the thick cloud and cloud shadow as well as recovering the cloud-contaminated pixels is indispensable to make good use of remote sensing images. In this paper, a novel thick cloud removal method for remote sensing images based on temporal smoothness and sparsity-regularized tensor optimization (TSSTO) is proposed. The basic idea of TSSTO is that the thick cloud and cloud shadow are not only sparse but also smooth along the horizontal and vertical direction in images while the clean images are smooth along the temporal direction between images. Therefore, the sparsity norm is used to boost the sparsity of the cloud and cloud shadow, and unidirectional total variation (UTV) regularizers are applied to ensure the unidirectional smoothness. This paper utilizes alternation direction method of multipliers to solve the presented model and generate the cloud and cloud shadow element as well as the clean element. The cloud and cloud shadow element is purified to get the cloud area and cloud shadow area. Then, the clean area of the original cloud-contaminated images is replaced to the corresponding area of the clean element. Finally, the reference image is selected to reconstruct details of the cloud area and cloud shadow area using the information cloning method. A series of experiments are conducted both on simulated and real cloud-contaminated images from different sensors and with different resolutions, and the results demonstrate the potential of the proposed TSSTO method for removing cloud and cloud shadow from both qualitative and quantitative viewpoints.
Local Government: Trends and Prospects
Creators: name: Sullivan, Patrick J.
name: Collins, Judith N.
name: Reid, J. Norman
name: Sullivan, Patrick J.
name: Collins, Judith N.
name: Reid, J. Norman
Publisher: name: Unknown
Year: 1981
Subjects: Community/Rural/Urban Development
Financial Economics
Public Economics

description: Local governments have grown rapidly — both in size and complexity — in an attempt to expand and improve public services. The impetus for this trend is largely the result of increased State and Federal assistance — both for planning and financing local improvements. Current social, economic, and political conditions affect the ability of local governments to finance the wide range of services for which they are responsible. In rural America, local governments may find it more difficult to provide desired public services, particularly in communities that experience rapid population growth. This article summarizes the major issues affecting the performance of local governments in recent years. Special emphasis is directed to the unique conditions that local officials in nonmetro America will likely face.
A rapid change in X-ray variability and a jet ejection in the black hole transient MAXI J1820+070
Creators: name: Homan, Jeroen
name: Bright, Joe
name: Motta, Sara E.
name: Altamirano, Diego
name: Arzoumanian, Zaven
name: Basak, Arkadip
name: Belloni, Tomaso M.
name: Cackett, Edward M.
name: Fender, Rob
name: Gendreau, Keith C.
name: Kara, Erin
name: Pasham, Dheeraj R.
name: Remillard, Ronald A.
name: Steiner, James F.
name: Stevens, Abigail L.
name: Uttley, Phil
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present Neutron Star Interior Composition Explorer X-ray and Arcminute Microkelvin Imager Large Array radio observations of a rapid hard-to-soft state transition in the black hole X-ray transient MAXI J1820+070. During the transition from the hard state to the soft state a switch between two particular types of quasiperiodic oscillations (QPOs) was seen in the X-ray power density spectra, from type-C to type-B, along with a drop in the strength of the broadband X-ray variability and a brief flare in the 7-12 keV band. Soon after this switch (~1.5-2.5 hr) a strong radio flare was observed that corresponded to the launch of superluminal ejecta. Although hints of a connection between QPO transitions and radio flares have been seen in other black hole X-ray transients, our observations constitute the strongest observational evidence to date for a link between the appearance of type-B QPOs and the launch of discrete jet ejections.
description: Accepted for publication in ApJ Letters
title: Transcription du manuscrit de Semur-en-Auxois, Bibliothèque Municipale, ms. 1, p. 15
Creators: name: Aubert, Eduardo Henrik
name: Brochard, Pierre
name: Aubert, Eduardo Henrik
name: Brochard, Pierre
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2022
Subjects: subject: Laboratoire de médiévistique occidentale de Paris
subject: Semur-en-Auxois
subject: LaMOP

description: Transcription du manuscrit de Semur-en-Auxois, Bibliothèque Municipale, ms. 1, p. 15

production-software: eScriptorium + Kraken version 3.0.13 (PageXml)
description: Source: https://www.nakala.fr/10.34847/nkl.42c6f545
description: Source: https://www.nakala.fr/10.34847/nkl.e905tdea
description: Relation: https://lamop.hypotheses.org/
description: Transcription du manuscrit Semur-en-Auxois, Bibliothèque Municipale, ms. 1
description: Transcription du manuscrit Semur-en-Auxois, Bibliothèque Municipale, ms. 1
Noncommutative Manifolds from the Higgs Sector of Coincident D-Branes
Creators: name: Isidro, J. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Higgs sector of the low-energy physics of n of coincident D-branes contains the necessary elements for constructing noncommutative manifolds. The coordinates orthogonal to the coincident branes, as well as their conjugate momenta, take values in the Lie algebra of the gauge group living inside the brane stack. In the limit when n=\infty (and in the absence of orientifolds), this is the unitary Lie algebra u(\infty). Placing a smooth manifold K orthogonally to the stack of coincident D-branes one can construct a noncommutative C*-algebra that provides a natural definition of a noncommutative partner for the manifold K.
description: 10 pages
Realistic GUT Yukawa Couplings from a Random Clockwork Model
Creators: name: von Gersdorff, Gero
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present realistic models of flavor in SU(5) and SO(10) grand unified theories (GUTs). The models are renormalizable and do not require any exotic representations in order to accommodate the necessary GUT breaking effects in the Yukawa couplings. They are based on a simple clockwork Lagrangian whose structure is enforced with just two (one) vectorlike U(1) symmetries in the case of SU(5) and SO(10) respectively. The inter-generational hierarchies arise spontaneously from products of matrices with order one random entries.
description: 18 pages, 2 figures
Lutte contre la pollution diffuse sur un bassin d’élevage : comparaison d’instruments de régulation en présence d’asymétrie d’information
Creators: name: Turpin, Nadine
name: Bontems, Philippe
name: Rotillon, Gilles
name: Turpin, Nadine
name: Bontems, Philippe
name: Rotillon, Gilles
Publisher: name: Unknown
Year: 2004
Subjects: Environmental Economics and Policy

description: A regulator who wishes to mitigate non-point source pollution and maintain the farmers’ revenue can choose among several policy tools. This paper compares the expected effects of several instruments on the pollution and profit levels, taking into account their acceptability : linear taxation of fertilisers, uniform extensification, fertiliser;quota. We focus on the interest of designing regulation mechanisms based on a nonlinear taxation of the production. The empirical results concern a watershed in the western part of France.
Uncertainty aware Search Framework for Multi-Objective Bayesian Optimization with Constraints
Creators: name: Belakaria, Syrine
name: Deshwal, Aryan
name: Doppa, Janardhan Rao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We consider the problem of constrained multi-objective (MO) blackbox optimization using expensive function evaluations, where the goal is to approximate the true Pareto set of solutions satisfying a set of constraints while minimizing the number of function evaluations. We propose a novel framework named Uncertainty-aware Search framework for Multi-Objective Optimization with Constraints (USeMOC) to efficiently select the sequence of inputs for evaluation to solve this problem. The selection method of USeMOC consists of solving a cheap constrained MO optimization problem via surrogate models of the true functions to identify the most promising candidates and picking the best candidate based on a measure of uncertainty. We applied this framework to optimize the design of a multi-output switched-capacitor voltage regulator via expensive simulations. Our experimental results show that USeMOC is able to achieve more than 90 % reduction in the number of simulations needed to uncover optimized circuits.
description: 9 pages, 2 figures, 1 table
Heterogeneous dynamics of the three dimensional Coulomb glass out of equilibrium
Creators: name: Kolton, Alejandro B.
name: Grempel, D. R.
name: Dominguez, Daniel
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The non-equilibrium relaxational properties of a three dimensional Coulomb glass model are investigated by kinetic Monte Carlo simulations. Our results suggest a transition from stationary to non-stationary dynamics at the equilibrium glass transition temperature of the system. Below the transition the dynamic correlation functions loose time translation invariance and electron diffusion is anomalous. Two groups of carriers can be identified at each time scale, electrons whose motion is diffusive within a selected time window and electrons that during the same time interval remain confined in small regions in space. During the relaxation that follows a temperature quench an exchange of electrons between these two groups takes place and the non-equilibrium excess of diffusive electrons initially present decreases logarithmically with time as the system relaxes. This bimodal dynamical heterogeneity persists at higher temperatures when time translation invariance is restored and electron diffusion is normal. The occupancy of the two dynamical modes is then stationary and its temperature dependence reflects a crossover between a low-temperature regime with a high concentration of electrons forming fluctuating dipoles and a high-temperature regime in which the concentration of diffusive electrons is high.
description: 10 pages, 9 figures
title: KI-geträumte Bilder – korrigierte Vergangenheit?
Creators: name: Schönfelder, Konstantin
Publisher: name: Zentrum verantwortungsbewusste Digitalisierung
publisherIdentifier: https://ror.org/04ms06f06
publisherIdentifierScheme: ROR
Year: 2025
Subjects: classificationCode: 6
subject: FOS: Humanities

description: Mit KI-Bildgeneratoren sind nun fantastische Fabrikationen sehr viel leichter, massenförmiger und schneller zu produzieren, die langfristig wohl an jedes Bild den Zweifel an der Glaubwürdigkeit anheften werden. Die Folgen für unsere historische Erinnerung könnten fatal sein – oder bieten sie gar die Möglichkeit zu ihrer Optimierung?
Temporal evolution of magnetic molecular shocks I. Moving grid simulations
Creators: name: Lesaffre, P.
name: Chièze, J. -P.
name: Cabrit, S.
name: Forêts, G. Pineau des
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present time-dependent 1D simulations of multifluid magnetic shocks with chemistry resolved down to the mean free path. They are obtained with an adaptive moving grid implemented with an implicit scheme. We examine a broad range of parameters relevant to conditions in dense molecular clouds, with preshock densities between 10^3 and 10^5 cm-3, velocities between 10 and 40 km/s, and three different scalings for the transverse magnetic field: B=0,0.1,1 μG \sqrt{n.cm3}. We first use this study to validate the results of Chièze, Pineau des Forêts & Flower (1998), in particular the long delays necessary to obtain steady C-type shocks, and we provide evolutionary time-scales for a much greater range of parameters. We also present the first time-dependent models of dissociative shocks with a magnetic precursor, including the first models of stationary CJ shocks in molecular conditions. We find that the maximum speed for steady C-type shocks is reached before the occurrence of a sonic point in the neutral fluid, unlike previously thought. As a result, the maximum speed for C-shocks is lower than previously believed. Finally, we find a large amplitude bouncing instability in J-type fronts near the H2 dissociation limit (u ~ 25-30 km/s), driven by H2 dissociation/reformation. At higher speeds, we find an oscillatory behaviour of short period and small amplitude linked to collisional ionisation of H. Both instabilities are suppressed after some time when a magnetic field is present. In a companion paper, we use the present simulations to validate a new semi-analytical construction method for young low-velocity magnetic shocks based on truncated steady-state models.
description: A&A in press
On the Soft Excess in the X-ray Spectrum of Cir X-1: Revisitation of the Distance to Cir X-1
Creators: name: Iaria, R.
name: Spano', M.
name: Di Salvo, T.
name: Robba, N. R.
name: Burderi, L.
name: Fender, R.
name: van der Klis, M.
name: Frontera, F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on a 300 ks BeppoSAX (0.12-200 keV) observation of Circinus X-1 (Cir X-1) at phases between 0.62 and 0.84 and on a 90 ks BeppoSAX observation of Cir X--1 at phases 0.11-0.16. Using the canonical model adopted until now to fit the energy spectrum of this source large residuals appear below 1 keV. These are well fitted using an equivalent hydrogen column of $0.66 \times 10^{22}$ cm$^{-2}$, adding absorption edges of O VII, O VIII and Ne IX in the spectra extracted from the observation at phases 0.62-0.84 and adding absorption edges of O VII, O VIII, Mg XI and Mg XII and absorption lines of O VIII and Mg XII in the spectra extracted from the observation at phases 0.11-0.16. During the observation at phases 0.62--0.84 the electron density associated to the ionized matter is $\sim 10^{13}$ cm$^{-3}$ remaining quit constant going away from the compact object. During the observation at phases 0.11-0.16 the electron density profile varies along the distance going from $\sim 6 \times 10^{13}$ cm$^{-3}$ at $\sim 10^{11}$ cm to $\sim 9 \times 10^{10}$ cm$^{-3}$ at $\sim 10^{13}$ cm. The equivalent hydrogen column towards Cir X-1 is thre times lower than the value obtained from previous models. This low value would imply that Cir X-1 is at a distance of 4.1 kpc.
description: 30 pages, 11 figures, accepted by ApJ
On Lithium-6 as diagnostic of the lithium-enrichment mechanism in red giants
Creators: name: Aguilera-Gómez, Claudia
name: Chanamé, Julio
name: Pinsonneault, Marc H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: High lithium-7 ($\mathrm{^7Li}$) abundances in giants are indicative of non-standard physical processes affecting the star. Mechanisms that could produce this signature include contamination from an external source, such as planets, or internal production and subsequent mixing to the stellar surface. However, distinguishing between different families of solutions has proven challenging, and there is no current consensus model that explains all the data. The lithium-6 ($\mathrm{^6Li}$) abundance may be a potentially important discriminant, as the relative $\mathrm{^6Li}$ and $\mathrm{^7Li}$ abundances are expected to be different if the enrichment were to come from internal production or from engulfment. In this work, we model the $\mathrm{^6Li}$ and $\mathrm{^7Li}$ abundances of different giants after the engulfment of a substellar mass companion. Given that $\mathrm{^6Li}$ is more strongly affected by Galactic chemical evolution than $\mathrm{^7Li}$, $\mathrm{^6Li}$ is not a good discriminant at low metallicities, where it is expected to be low in both star and planet. For modeled metallicities ([Fe/H]$>-0.5$), we use a "best case" initial $\mathrm{^6Li/^7Li}$ ratio equal to the solar value. $\mathrm{^6Li}$ increases significantly after the engulfment of a companion. However, at metallicities close to solar and higher, the $\mathrm{^6Li}$ signal does not last long in the stellar surface. As such, detection of surface $\mathrm{^6Li}$ in metal-rich red giants would most likely indicate the action of a mechanism for $\mathrm{^6Li}$-enrichment other than planet engulfment. At the same time, $\mathrm{^6Li}$ should not be used to reject the hypothesis of engulfment in a $\mathrm{^7Li}$-enriched giant or to support a particular $\mathrm{^7Li}$-enhancement mechanism.
Additional file 1 of TM-MC 2.0: an enhanced chemical database of medicinal materials in Northeast Asian traditional medicine
Creators: name: Kim, Sang-Kyun
name: Lee, Myung-Ku
name: Jang, Ho
name: Lee, Jeong-Ju
name: Lee, Sanghun
name: Jang, Yunji
name: Jang, Hyunchul
name: Kim, Anna
Publisher: name: figshare
Year: 2024
Subjects: Biochemistry
Medicine
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Science Policy
Hematology
Virology

description: Supplementary Material 1
Maximal extension of the Schwarzschild metric: From Painlevé-Gullstrand to Kruskal-Szekeres
Creators: name: Lemos, José P. S.
name: Silva, Diogo L. F. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We find a specific coordinate system that goes from the Painlevé-Gullstrand partial extension to the Kruskal-Szekeres maximal extension and thus exhibit the maximal extension of the Schwarzschild metric in a unified picture. We do this by adopting two time coordinates, one being the proper time of a congruence of outgoing timelike geodesics, the other being the proper time of a congruence of ingoing timelike geodesics, both parameterized by the same energy per unit mass $E$. $E$ is in the range $1\leq E
description: 18 pages, 7 figures
Stability for quasi-periodically perturbed Hill's equations
Creators: name: Gentile, Guido
name: Cortez, Daniel A.
name: Barata, Joao C. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 37J40, 70H08, 70K40, 34B30, 81Q15

description: We consider a perturbed Hill's equation of the form $\ddot ϕ+ (p_{0}(t) + εp_{1}(t)) ϕ= 0$, where $p_{0}$ is real analytic and periodic, $p_{1}$ is real analytic and quasi-periodic and $\eps$ is a ``small'' real parameter. Assuming Diophantine conditions on the frequencies of the decoupled system, i.e. the frequencies of the external potentials $p_{0}$ and $p_{1}$ and the proper frequency of the unperturbed ($ε=0$) Hill's equation, but without making non-degeneracy assumptions on the perturbing potential $p_{1}$, we prove that quasi-periodic solutions of the unperturbed equation can be continued into quasi-periodic solutions if $ε$ lies in a Cantor set of relatively large measure in $[-ε_0,ε_0]$, where $ε_0$ is small enough. Our method is based on a resummation procedure of a formal Lindstedt series obtained as a solution of a generalized Riccati equation associated to Hill's problem.
description: 40 pages, 4 figures
Saturable absorption in single-walled carbon nanotubes at 1550 nm
Creators: name: Ma, Robert Tak Fai
Publisher: name: University of British Columbia
Year: 2010

description: Single-walled carbon nanotubes (SWNTs) provide an alternative to multi-quantum well (MQW) based saturable absorbers at optical communication wavelengths. This work is aimed at measuring the nonlinear absorption coefficient of SWNTs at 1550 nm and to compare the performance of SWNT based saturable absorbers with MQW based saturable absorbers. In this work, saturable absorption and optical bleaching in a SWNT sample at 1550 nm were observed by the Power-scan and the two-color pump-probe measurement methods. A measurement system capable of performing Z-scan, P-scan, and pump-probe measurements was developed. The filtration method was used to fabricate a thin film of SWNTs grown by the HiPco process onto a sapphire substrate. The experimental results obtained from the P-scan measurements were analyzed to estimate the nonlinear absorption coefficient of the SWNT sample. The estimated values are large compared to those of other nonlinear optical materials. Optical bleaching was observed in the pump-probe measurement. A figure of merit to compare the performance of saturable absorbers based on their modulation depth, saturation intensity, and recovery time is proposed. Using it, the figures of merit of the SWNT sample used in this work, those of several SWNT based saturable absorbers reported in the literature, and those of several MQW based saturable absorbers, also reported in the literature, were calculated. The calculations showed that the performance of SWNT based saturable absorbers is comparable to MQW based saturable absorbers. The optical properties of SWNTs, combined with the low cost of fabrication, demonstrate the potential of SWNT based devices to find a large number of optical applications.
Static axially symmetric solutions of Einstein-Yang-Mills equations with a negative cosmological constant: black hole solutions
Creators: name: Radu, Eugen
name: Winstanley, Elizabeth
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate static axially symmetric black hole solutions in a four-dimensional Einstein-Yang-Mills-SU(2) theory with a negative cosmological constant $Λ$. These solutions approach asymptotically the anti-de Sitter spacetime and possess a regular event horizon. A discussion of the main properties of the solutions and the differences with respect to the asymptotically flat case is presented. The mass of these configurations is computed by using a counterterm method. We note that the $Λ=-3$ configurations have an higher dimensional interpretation in context of $d=11$ supergravity. The existence of axially symmetric monopole and dyon solutions in a fixed Schwarzschild-anti-de Sitter background is also discussed. An exact solution of the Einstein-Yang-Mills equations is presented in Appendix.
description: 47 pages, 47 figures
Variable G and $Λ$: scalar-tensor versus RG-improved cosmology
Creators: name: Rubano, Claudio
name: Scudellaro, Paolo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the consequences due to time varying $G$ and $Λ$ in scalar-tensor theories of gravity for cosmology, inspired by the modifications introduced by the Renormalization Group (RG) equations in the Quantum Einstein Gravity. We assume a power-law scale factor in presence contemporarily of both the scalar field and the matter components of the cosmic fluid, and analyze a special case and its generalization, also showing the possibility of a phantom cosmology. In both such situations we find a negative kinetic term for the scalar field $Q$ and, possibly, an equation-of-state parameter $w_Q
description: 25 pages, to be published in Gen. Rel. Grav. 2005
Global oscillation data analysis on the $3ν$ mixing without unitarity
Creators: name: Hu, Zhuojun
name: Ling, Jiajie
name: Tang, Jian
name: Wang, TseChun
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present results of a combined analysis in neutrino oscillations without unitarity assumption in the $3ν$ mixing picture. Constraints on neutrino mixing matrix elements are based on recent data from the reactor, solar and long-baseline accelerator neutrino oscillation experiments. The current data are consistent with the standard $3ν$ scheme. The precision on different matrix elements can be as good as a few percent at $3σ$ CL, and is mainly limited by the experimental statistical uncertainty. The $ν_e$ related elements are the most precisely measured among all sectors with the uncertainties $<20\%$. The measured leptonic CP violation is very close to the one assuming the standard $3ν$ mixing. The deviations on normalization and the unitarity triangle closure are confined within $\mathcal{O}(10^{-3})$, $\mathcal{O}(10^{-2})$ and $\mathcal{O}(10^{-1})$, for $ν_e$, $ν_μ$ and $ν_τ$ sectors, respectively. We look forward to the next-generation neutrino oscillation experiments \textit{such as} DUNE, T2HK, and JUNO, especially the precise measurements on $ν_τ$ oscillations, to significantly improve the precision of unitarity test on the $3ν$ mixing matrix.
Supplemantary Materials from Afterdepolarizations and abnormal calcium handling in atrial myocytes with modulated SERCA uptake: A sensitivity analysis of calcium handling channels
Creators: name: Lo, Andy C. Y.
name: Jieyun Bai
name: Gladding, Patrick A.
name: Fedorov, Vadim V.
name: Jichao Zhao
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: 90399 Biomedical Engineering not elsewhere classified
subject: FOS: Medical engineering

description: Delayed afterdepolarizations (DADs) and spontaneous depolarizations (SDs) are typically triggered by spontaneous diastolic Ca2+ release from the sarcoplasmic reticulum (SR) which is caused by an elevated SR Ca2+-ATPase (SERCA) uptake and dysfunctional ryanodine receptors. However, recent studies on the T-box transcription factor gene (TBX5) demonstrated that abnormal depolarizations could occur despite a reduced SERCA uptake. Similar findings have also been reported in experimental or clinical studies of diabetes and heart failure. To investigate the sensitivity of SERCA in the genesis of DADs/SDs as well as its dependence on other Ca2+ handling channels, we have performed systematic analyses using the Maleckar et al. model. Results showed that the modulation of SERCA alone cannot trigger abnormal depolarizations, but can instead affect the interdependency of other Ca2+ handling channels in triggering DADs/SDs. Furthermore, we discovered the existence of a threshold value for the intracellular concentration of Ca2+ ([Ca2+]i) for abnormal depolarizations, which is modulated by the maximum SERCA uptake and the concentration of Ca2+ in the uptake and release compartments in the SR ([Ca2+]up and [Ca2+]rel). For the first time, our modelling study reconciles different mechanisms of abnormal depolarizations in the setting of ‘lone’ AF, reduced TBX5, diabetes and heart failure, and may lead to more targeted treatment for these patients.This article is part of the theme issue ‘Uncertainty quantification in cardiac and cardiovascular modelling and simulation’.
Depth-aware Blending of Smoothed Images for Bokeh Effect Generation
Creators: name: Dutta, Saikat
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Bokeh effect is used in photography to capture images where the closer objects look sharp and every-thing else stays out-of-focus. Bokeh photos are generally captured using Single Lens Reflex cameras using shallow depth-of-field. Most of the modern smartphones can take bokeh images by leveraging dual rear cameras or a good auto-focus hardware. However, for smartphones with single-rear camera without a good auto-focus hardware, we have to rely on software to generate bokeh images. This kind of system is also useful to generate bokeh effect in already captured images. In this paper, an end-to-end deep learning framework is proposed to generate high-quality bokeh effect from images. The original image and different versions of smoothed images are blended to generate Bokeh effect with the help of a monocular depth estimation network. The proposed approach is compared against a saliency detection based baseline and a number of approaches proposed in AIM 2019 Challenge on Bokeh Effect Synthesis. Extensive experiments are shown in order to understand different parts of the proposed algorithm. The network is lightweight and can process an HD image in 0.03 seconds. This approach ranked second in AIM 2019 Bokeh effect challenge-Perceptual Track.
Additional file 1 of Critical analyses of Latina mortality: disentangling the heterogeneity of ethnic origin, place, nativity, race, and socioeconomic status
Creators: name: Errisuriz, Vanessa L.
name: Zambrana, Ruth Enid
name: Parra-Medina, Deborah
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Supplementary Material 1
Additional file 1 of Myths and common misbeliefs about cervical cancer causation among Palestinian women: a national cross-sectional study
Creators: name: Elshami, Mohamedraed
name: Abukmail, Hanan
name: Thalji, Mariam
name: Al-Slaibi, Ibrahim
name: Alser, Mohammed
name: Radaydeh, Afnan
name: Alfuqaha, Alaa
name: Khader, Salma
name: Khatib, Lana
name: Fannoun, Nour
name: Ahmad, Bisan
name: Kassab, Lina
name: Khrishi, Hiba
name: Elhussaini, Deniz
name: Abed, Nour
name: Nammari, Aya
name: Abdallah, Tumodir
name: Alqudwa, Zaina
name: Idais, Shahd
name: Tanbouz, Ghaid
name: Hajajreh, Ma’alem
name: Selmiyh, Hala Abu
name: Abo-Hajouj, Zakia
name: Hebi, Haya
name: Zamel, Manar
name: Skaik, Refqa Najeeb
name: Hammoud, Lama
name: Rjoub, Saba
name: Ayesh, Hadeel
name: Rjoub, Toqa
name: Zakout, Rawan
name: Alser, Amany
name: Albarqi, Shurouq I.
name: Abu-El-Noor, Nasser
name: Bottcher, Bettina
Publisher: name: figshare
Year: 2024
Subjects: Biotechnology
Cancer
Science Policy
Mental Health

description: Additional file 1.
Scaling and Formulary cross sections for ion-atom impact ionization
Creators: name: Kaganovich, Igor D.
name: Startsev, Edward
name: Davidson, Ronald C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The values of ion-atom ionization cross sections are frequently needed for many applications that utilize the propagation of fast ions through matter. When experimental data and theoretical calculations are not available, approximate formulas are frequently used. This paper briefly summarizes the most important theoretical results and approaches to cross section calculations in order to place the discussion in historical perspective and offer a concise introduction to the topic. Based on experimental data and theoretical predictions, a new fit for ionization cross sections is proposed. The range of validity and accuracy of several frequently used approximations (classical trajectory, the Born approximation, and so forth) are discussed using, as examples, the ionization cross sections of hydrogen and helium atoms by various fully stripped ions.
description: 46 pages, 8 figures
A non-perturbative approach to the scalar Casimir effect with Lorentz symmetry violation
Creators: name: Escobar, C. A.
name: Martín-Ruiz, A.
name: Franca, O. J.
name: Garcia, Marcos A. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We determine the effect of Lorentz invariance violation in the vacuum energy and stress between two parallel plates separated by a distance $L$, in the presence of a massive real scalar field. We parametrize the Lorentz-violation in terms of a symmetric tensor $h^{\,μν}$ that represents a constant background. Through the Green's function method, we obtain the global Casimir energy, the Casimir force between the plates and the energy density in a closed analytical form without resorting to perturbative methods. With regards to the pressure, we find that $\mathcal{F}_c(L)=\mathcal{F}_0(\tilde{L})/\sqrt{-{\rm det}\, h^{\,μν}}$, where $\mathcal{F}_0$ is the Lorentz-invariant expression, and $\tilde{L}$ is the plate separation rescaled by the component of $h^{\,μν}$ normal to the plates, $\tilde{L}=L/\sqrt{-h^{nn}}$. We also analyze the Casimir stress including finite-temperature corrections. The local behavior of the Casimir energy density is also discussed.
description: 6 pages, No figures