cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bilepton contributions to the neutrinoless double beta decay in the economical 3-3-1 model
Creators: name: Van Soa, Dang
name: Van Dong, Phung
name: Huong, Trinh Thi
name: Long, Hoang Ngoc
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Possible contributions of the bilepton to the neutrinoless double beta $(ββ)_{0ν}$ decay in the economical 3-3-1 model are discussed. We show that the $(ββ)_{0ν}$ decay in this model is due to both sources--Majorana $_{L}$ and Dirac $_{D}$ neutrino masses. If the mixing angle between charged gauge bosons, the standard model $W$ and bilepton $Y$, is in range of the ratio of neutrino masses $_{L}/< M_ν>_{D}$, both the Majorana and Dirac masses simultaneously give contributions dominant to the decay. As results, constraints on the bilepton mass are also given.
description: 9 pages, 6 figures
Relative Entropy and Statistics
Creators: name: Bavaud, François
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Formalising the confrontation of opinions (models) to observations (data) is the task of Inferential Statistics. Information Theory provides us with a basic functional, the relative entropy (or Kullback-Leibler divergence), an asymmetrical measure of dissimilarity between the empirical and the theoretical distributions. The formal properties of the relative entropy turn out to be able to capture every aspect of Inferential Statistics, as illustrated here, for simplicity, on dices (= i.i.d. process with finitely many outcomes): refutability (strict or probabilistic): the asymmetry data / models; small deviations: rejecting a single hypothesis; competition between hypotheses and model selection; maximum likelihood: model inference and its limits; maximum entropy: reconstructing partially observed data; EM-algorithm; flow data and gravity modelling; determining the order of a Markov chain.
description: 31 pages. 2 figures.
Contact Interactions and Resonance-Like Physics at Present and Future Colliders from Unparticles
Creators: name: Rizzo, Thomas G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: High scale conformal physics can lead to unusual unparticle stuff at our low energies. In this paper we discuss how the exchange of unparticles between Standard Model fields can lead to new contact interaction physics as well as a pseudoresonance-like structure, an unresonance, that might be observable at the Tevatron or LHC in, e.g., the Drell-Yan channel. The specific signatures of this scenario are quite unique and can be used to easily identify this new physics given sufficient integrated luminosity.
description: 20 pages, 10 figs; minor text changes, ref added; typos corrected
Giant magnetoelectric effect induced by intrinsic surface stress in ferroic nanorods
Creators: name: Glinchuk, M. D.
name: Eliseev, E. A.
name: Morozovska, A. N.
name: Blinc, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The general approach for the consideration of the magnetoelectric effects in ferroic nanorods is proposed in the framework of the phenomenological theory. The intrinsic surface stress, magneto- and electrostriction as well as piezoelectric and piezomagnetic effects are included into the free energy. The intrinsic surface stress under the curved nanoparticle surface is shown to play an important role in the shift of ferroelectric and ferromagnetic transition temperatures and built-in magnetic and electric fields appearance, which are inversely proportional to the nanorod radius. We consider the case of quadratic and linear magnetoelectric coupling coefficients. The linear coupling coefficient is radius independent, whereas the quadratic ones include terms inversely proportional to the nanorod radius and thus strongly increase with decrease of the radius. The predicted giant relative dielectric tunability in the vicinity of ferromagnetic and ferroelectric phase transition points induced by quadratic magnetoelectric coupling increases by 2-50 times. The quadratic magnetoelectric coupling dramatically changes the phase diagrams of ferroic nanorods when the radius decreases. In particular the second order phase transition may become a first one, the triple point state characterized by continuous set of order parameters appears at zero external electric and magnetic fields and the tricritical points appear under external fields.
description: 36 pages, 11 figures, 3 Appendices
Dual-Comb Hyperspectral Digital Holography
Creators: name: Vicentini, Edoardo
name: Wang, Zhenhai
name: Van Gasse, Kasper
name: Hänsch, Theodor W.
name: Picqué, Nathalie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Holography has always held special appeal, for it is able to record and display spatial information in three dimensions. Here, we show how to augment the capabilities of digital holography by using a large number of narrow laser lines at precisely-defined optical frequencies simultaneously. Using an interferometer based on two frequency combs of slightly different repetition frequencies and a lens-less camera sensor, we record time-varying spatial interference patterns that generate spectral hypercubes of complex holograms, revealing, for each comb line frequency, amplitudes and phases of scattered wave-fields. Unlike with previous multi-color holography and low-coherence holography (including with a frequency comb), the unique synergy of broad spectral bandwidth and high temporal coherence in dual-comb holography opens up novel optical diagnostics, such as precise dimensional metrology over large distances without interferometric phase ambiguity, or hyperspectral 3-dimensional imaging with high spectral resolving power, as we illustrate by molecule-selective imaging of an absorbing gas.
description: 11 pages
Variational Monte Carlo Method Combined with Quantum-Number Projection and Multi-Variable Optimization
Creators: name: Tahara, Daisuke
name: Imada, Masatoshi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Variational wave functions used in the variational Monte Carlo (VMC) method are extensively improved to overcome the biases coming from the assumed variational form of the wave functions. We construct a highly generalized variational form by introducing a large number of variational parameters to the Gutzwiller-Jastrow factor as well as to the one-body part. Moreover, the projection operator to restore the symmetry of the wave function is introduced. These improvements enable to treat fluctuations with long-ranged as well as short-ranged correlations. A highly generalized wave function is implemented by the Pfaffians introduced by Bouchaud et al., together with the stochastic reconfiguration method introduced by Sorella for the parameter optimization. Our framework offers much higher accuracy for strongly correlated electron systems than the conventional variational Monte Carlo methods.
description: 16 pages, 9 figures, 4 tables
Precise Determination of the I=2 pipi Scattering Length from Mixed-Action Lattice QCD
Creators: name: Beane, Silas R.
name: Luu, Thomas C.
name: Orginos, Kostas
name: Parreno, Assumpta
name: Savage, Martin J.
name: Torok, Aaron
name: Walker-Loud, Andre
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The I=2 pipi scattering length is calculated in fully-dynamical lattice QCD with domain-wall valence quarks on the asqtad-improved coarse MILC configurations (with fourth-rooted staggered sea quarks) at four light-quark masses. Two- and three-flavor mixed-action chiral perturbation theory at next-to-leading order is used to perform the chiral and continuum extrapolations. At the physical charged pion mass, we find m_pi a_pipi(I=2) = -0.04330 +- 0.00042, where the error bar combines the statistical and systematic uncertainties in quadrature.
description: 20 pages, 7 figures
title: Domestic Labour, Repetition and Acts of Care in Art Making
Creators: name: Carroll, Megan
Publisher: name: Emily Carr University of Art and Design
Year: 2023
Subjects: subject: Feminism
subject: Motherhood
subject: Painting

description: This MFA Thesis Project explores how repetitive domestic labour in the home, predominantly carried out by women and in particular my experience as mother and caregiver informs my MFA research. The Thesis Project artworks range in scale from small handheld intimate embroidered textile pieces to large abstract paintings created on my kitchen floor with tools such as brooms, toilet brushes and rags that are commonly associated with women’s work. I use a minimal colour palette of black, greys and gold to highlight the sombre and never ending actions of daily domestic maintenance. By giving the marks presence and weight, I am demanding that they be acknowledged and the audience feels the relentlessness of activities that never seem complete. I incorporate concepts addressed by artists such as Mierle Laderman Ukeles and her documentation of invisible labour as well as Janine Antoni who physically put herself into the act of art making with her body. Ultimately, my practice draws on these artistic influences to generate artwork that speaks to my lived experience as an artist, mother and caregiver.
M-Theory Brane Deformations
Creators: name: Berman, David S.
name: Tadrowski, Laura C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the techniques developed by Lunin and Maldacena we calaculate the supergravity solutions of membranes and fivebranes in the presence of a background C field. All the distinct possible C-field configurations are explored. Decoupling limits for these branes are then described that preserve the deformation leading to families of M-theory brane deformation duals. The decoupled geometry is then explored using probe brane techniques and brane thermodynamics.
description: 42 pages, latex, v2: references added
Integration Testing of an IoT Process-Based Monitoring System for Classic Car Restoration Shops
Creators: name: Pereira, Diogo
name: Lívio, Diogo
Publisher: name: Zenodo
Year: 2021
Subjects: Classic Cars
Car Restoration Shop
IoT
Process-Based
Sensors
Industry 4.0
Industry IoT
Classic Car documentation
Workflow Engine
BPMN
DMN
Enterprise Resource Planning (ERP)
Integration Testing

description: This software document presents the integration tests made to validate the system in https://doi.org/10.5281/zenodo.5731602.
Modeling the charging process of a coil by an HTS dynamo-type flux pump
Creators: name: Ghabeli, Asef
name: Ainslie, Mark
name: Pardo, Enric
name: Quéval, Loïc
name: Mataira, Ratu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The high-$T_c$ superconducting (HTS) dynamo exploits the nonlinear resistivity of an HTS tape to generate a DC voltage when subjected to a varying magnetic field. This leads to the so-called flux pumping phenomenon and enables the injection of DC current into a superconducting coil connected to the dynamo without current leads. In this work, the process of charging a coil by an HTS dynamo is examined in detail using two numerical models: the Minimum Electromagnetic Entropy Production and the segregated $\textbf{H}$-formulation finite element model. The numerical results are compared with an analytical method for various airgaps and frequencies. Firstly, the I-V curves of the modeled HTS dynamo are calculated to obtain the open-circuit voltage, short-circuit current and internal resistance. Afterward, the process of charging a coil by the dynamo including the charging current curve and its dynamic behavior are investigated. The results obtained by the two models show excellent quantitative and qualitative agreement with each other and with the analytical method. Although the general charging process of the coil can be obtained from the I-V curve of the flux pump, the current ripples within a cycle of dynamo rotation, which can cause ripple AC loss in the HTS dynamo, can only be captured via the presented models.
description: 19 pages, 7 figures
A Measurement of The Faint Source Correlation Function in the GOODS and UDF Survey
Creators: name: Morganson, Eric
name: Blandford, Roger
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a stable procedure for defining and measuring the two point angular autocorrelation function, w, of faint (25 < V < 29), barely resolved and unresolved sources in the HST GOODS and UDF datasets. We construct catalogs that include close pairs and faint detections. We show for the first time that on subarcsecond scales, the correlation function exceeds unity. This correlation function is well fit by a power law with index of 2.5 and a characteristic angular scale that decrease slowly with magnitude. This is very different from the purely gravitationalcorrelation function of brighter galaxies which has a index of 0.7 and a characteristic angular scale which decreases quickly with magnitude. This observed clustering probably reflects the presence of giant star-forming regions within galactic-scale potential wells. Its measurement enables a new approach to measuring the redshift distribution of the faintest sources in the sky.
description: 13 pages, 11 figures
Probing local relaxation of cold atoms in optical superlattices
Creators: name: Flesch, A.
name: Cramer, M.
name: McCulloch, I. P.
name: Schollwoeck, U.
name: Eisert, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the study of relaxation processes in coherent non-equilibrium dynamics of quenched quantum systems, ultracold atoms in optical superlattices with periodicity two provide a very fruitful test ground. In this work, we consider the dynamics of a particular, experimentally accessible initial state prepared in a superlattice structure evolving under a Bose-Hubbard Hamiltonian in the entire range of interaction strengths, further investigating the issues raised in Ref. [Phys. Rev. Lett. 101, 063001 (2008)]. We investigate the relaxation dynamics analytically in the non interacting and hard core bosonic limits, deriving explicit expressions for the dynamics of certain correlation functions, and numerically for finite interaction strengths using the time-dependent density-matrix renormalization (t-DMRG) approach. We can identify signatures of local relaxation that can be accessed experimentally with present technology. While the global system preserves the information about the initial condition, locally the system relaxes to the state having maximum entropy respecting the constraints of the initial condition. For finite interaction strengths and finite times, the relaxation dynamics contains signatures of the relaxation dynamics of both the non-interacting and hard core bosonic limits.
description: 18 pages RevTex, 20 figures, final version (problem with figures resolved)
Nucleosynthesis constraints through $γ$-ray line measurements from classical novae
Creators: name: Siegert, Thomas
name: Ghosh, Sohan
name: Mathur, Kalp
name: Spraggon, Ethan
name: Yeddanapudi, Akshay
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Classical novae are among the most frequent transient events in the Milky Way, and key agents of ongoing nucleosynthesis. Despite their large numbers, they have never been observed in soft $γ$-ray emission. Measurements of their $γ$-ray signatures would provide both, insights on explosion mechanism as well as nucleosynthesis products. Our goal is to constrain the ejecta masses of $\mathrm{^7Be}$ and $\mathrm{^{22}Na}$ from classical novae through their $γ$-ray line emissions at 478 and 1275 keV. We extract posterior distributions on the line fluxes from archival data of the INTEGRAL/SPI spectrometer telescope. We then use a Bayesian hierarchical model to link individual objects and diffuse emission and infer ejecta masses from the whole population of classical novae in the Galaxy. Individual novae are too dim to be detectable in soft $γ$-rays, and the upper bounds on their flux and ejecta mass uncertainties cover several orders of magnitude. Within the framework of our hierarchical model, we can, nevertheless, infer tight upper bounds on the $\mathrm{^{22}Na}$ ejecta masses, given all uncertainties from individual objects as well as diffuse emission, of $<2.0 \times 10^{-7}\,\mathrm{M_{\odot}}$ (99.85th percentile). In the context of ONe nucleosynthesis, the $\mathrm{^{22}Na}$ bounds are consistent with theoretical expectations, and exclude that most ONe novae happen on white dwarfs with masses around $1.35\,\mathrm{M_{\odot}}$. The upper bounds from $\mathrm{^{7}Be}$ are uninformative. From the combined ejecta mass estimate of $\mathrm{^{22}Na}$ and its $β^+$-decay, we infer a positron production rate of $<5.5 \times 10^{42}\,\mathrm{e^+\,s^{-1}}$, which would make at most 10% of the total annihilation rate in the Milky Way.
MPEC 2024-T26 : 2024 RP74
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 RP74

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.
Towards Realistic Modeling of the Astrometric Capabilities of MCAO Systems: Detecting an Intermediate Mass Black Hole with MAVIS
Creators: name: Monty, Stephanie
name: Rigaut, Francois
name: McDermid, Richard
name: Baumgardt, Holger
name: Cranney, Jesse
name: Agapito, Guido
name: Mendel, J. Trevor
name: Plantet, Cedric
name: Greggio, Davide
name: Stetson, Peter B.
name: Fiorentino, Giuliana
name: Haynes, Dionne
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Accurate astrometry is a key deliverable for the next generation of multi-conjugate adaptive optics (MCAO) systems. The MCAO Visible Imager and Spectrograph (MAVIS) is being designed for the Very Large Telescope Adaptive Optics Facility and must achieve 150 $μ$as astrometric precision (50 $μ$as goal). To test this before going on-sky, we have created MAVISIM, a tool to simulate MAVIS images. MAVISIM accounts for three major sources of astrometric error, high- and low-order point spread function (PSF) spatial variability, tip-tilt residual error and static field distortion. When exploring the impact of these three error terms alone, we recover an astrometric accuracy of 50 $μ$as for all stars brighter than $m=19$ in a 30s integration using PSF-fitting photometry. We also assess the feasibility of MAVIS detecting an intermediate mass black hole (IMBH) in a Milky Way globular cluster. We use an N-body simulation of an NGC 3201-like cluster with a central 1500 M$_{\odot}$ IMBH as input to MAVISIM and recover the velocity dispersion profile from proper motion measurements. Under favourable astrometric conditions, the dynamical signature of the IMBH is detected with a precision of ~0.20 km/s in the inner ~4" of the cluster where HST is confusion-limited. This precision is comparable to measurements made by Gaia, HST and MUSE in the outer ~60" of the cluster. This study is the first step towards building a science-driven astrometric error budget for an MCAO system and a prediction of what MAVIS could do once on sky.
description: 17 pages, 13 figures, accepted for publication in MNRAS, main result is shown in Figure 12. Fixed typo in introduction
Final state radiation and a possibility to test a pion-photon interaction model near two-pion threshold
Creators: name: Pancheri, G.
name: Shekhovtsova, O.
name: Venanzoni, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Final state radiation in the process $e^+e^-\toπ^+π^-$ is considered for the cuts used in the analysis of KLOE data at large angles. By means of a Monte Carlo event generator FEVA, effects of non-pointlike behaviour of pions are estimated in the framework of Resonance Perturbation Theory. An additional complication related with the $ϕ$ meson intermediate state is taken into account and the corresponding contributions (the direct decay $ϕ\toπ^+π^-γ$ and the double resonance decay $ϕ\toρ^\pmπ^\mp\toπ^+π^-γ$) are added to FEVA. A method to test effects of non-pointlike behaviour of pions in a model-independent way is proposed.
description: 16 pages, 6 figures
Metagenomic tools comparison on 16S rRNA Sequences
Creators: name: Talavera Rodríguez, Alba María
name: Marcos-Zambrano, Laura Judith
name: Carrilo de Santa Pau, Enrique
name: Serrano Villar, Sergio
name: Fernandez Lanza, Val
Publisher: name: Zenodo
Year: 2019
Subjects: metataxonomics
16S rRNA
Mothur
Qiime2
Kraken

description: Background: Metagenomics, the study of genomic sequences present in a given environment or ecosystem, has become an increasingly popular field of study during the last years. As a consequence, there are a huge amounts of metagenomics data and tools available but there is no studies that compare the results of using different bioinformatics tools for 16S rRNA sequences. Kraken2 is an alternative to well established methods such us QIIME2 or Mothur. Kraken2 is based on exact k-mer matches to achieve high accuracy and fast classification meanwhile QIIME and Mothur are based on clustering and classification. New version of Kraken2 allow to use 16S rRNA databases as reference. Here we evaluate the three different tools in order to determine how similar are theirs results and try to clarify something about what should be the standard method for develop the metagenomics analyses. Materials/methods: We used a well-kown dataset available at Mothur’s tutorial, which comes from a study interested in understanding the effect of normal variation in the gut microbiome on host health using mice fresh feces. This sample consist on 16S rRNA sequencing that were generated using Illumina's MiSeq platform using paired end reads. In order to compare the results from the three methods we use GreenGenes database to classification. We have used Qiime 2 (qiime2-2019.1), Kraken 2 (version 2.0.7-beta) and Mothur (v.1.40.5) because they are becoming popular in metagenomics analysis. The taxonomic classification results were evaluated with different methods at all the taxonomic levels to determine how different are their classifications and if their results are comparable. Results: The results show that Mothur are really different in comparison with the other tools, but results from Kraken 2 and Qiime 2 are practically identical at all the taxonomic levels, except at gender level that is a bit different and at specie level that is really different using the three tools. Conclusions: The results suggest that Kraken2 can be used for target metagenomics analysis as substitute of more classical methods such as QIIME2 or Mothur. Moreover Kraken2 is computationally much faster and simple to use.
Heavily obscured AGN with BeppoSAX, INTEGRAL, SWIFT, XMM and Chandra: prospects for Simbol-X
Creators: name: Della Ceca, R.
name: Severgnini, P.
name: Caccianiga, A.
name: Comastri, A.
name: Gilli, R.
name: Fiore, F.
name: Piconcelli, E.
name: Malaguti, P.
name: Vignali, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: According to the latest versions of synthesis modeling of the Cosmic X-ray Background, Compton Thick AGN should represent ~50% of the total absorbed AGN population. However, despite their importance in the cosmological context, only a few dozens of Compton Thick AGN have been found and studied so far. We will briefly review this topic and discuss the improvement in this field offered by the Simbol-X mission with its leap in sensitivity (E>10 keV) of more than a factor 500 with respect to previous X-ray missions.
description: Solicited talk at the conference "Simbol-X: the Hard X-ray Universe in focus" held in Bologna, 14-16 May 2007. 8 pages, 5 figures, 2 tables
Software Architecture of an IoT Process-Based Monitoring System for Classic Car Restoration Shops
Creators: name: Pereira, Diogo
name: Lívio, Diogo
name: Amaral, Vasco
name: Brito e Abreu, Fernando
Publisher: name: Zenodo
Year: 2021
Subjects: Classic Cars
Car Restoration Shop
IoT
Process-Based
Sensors
Industry 4.0
Industry IoT
Classic Car documentation
Workflow Engine
BPMN
DMN
Enterprise Resource Planning (ERP)

description: This technical note presents a deployment diagram describing the components and their interdependencies of an IoT process-based monitoring system for classic car restoration shops.
Occupational conditions as predictors of adult education participation
Creators: name: Molina, José A.
Publisher: name: University of British Columbia
Year: 2010

description: The problem addressed by the inquiry stems from the relationship between work and leisure. The main concern of this study was to determine which set of variables, occupational conditions (complexity of the job, closeness of supervision, job routinization, job satisfaction, and job commitment) and background characteristics ( formal education attainment, level of income, ethnicity, and age) were better predictors of adult education participation. Using the "spill-over" hypothesis as a paradigm, the occupational conditions and background characteristics were examined in relation to adult education participation in a group of adults with low socioeconomic status. The "spill-over" hypotheses proposes that experiences and feelings from work affect leisure time activities. A model was used to study the relationships among background characteristics and occupational conditions "with adult education participation as the dependent variable. The design to implement this research was a structured survey. To collect data relative to the problem, a structured interview schedule was used to interview a random sample of 50 adults of low socioeconomic status living in East Vancouver. Measures of central tendency were applied to the data, as well as correlation, linear regression, and path analysis. A major finding of the inquiry was that occupational conditions were better predictors of adult education participation than background characteristics. Among the occupational conditions, complexity of the job and job routinization were found to be the best predictors of adult education participation. These findings were interpreted as follows: in groups of low socioeconomic status, workers with jobs which require reading, writing, analysing data or dealing with any written materials participate more in adult education activities than people who spend more time working with their hands. Similarly, workers who spend more time working with people tend to participate more in adult education-related activities than workers who have jobs that are extremely routine, predictable, and repetitive. Another striking finding was that formal education attainment was not the best predictor of adult education. This finding differs from reports in the literature, suggesting that in groups of low socioeconomic status there are variables, namely occupational conditions, other than formal education attainment, which have more power to explain and predict the phenomenon of adult education participation. How the occupational conditions compare with formal education attainment as predictors of adult education participation for more socioeconomically diverse samples remains a research question yet to be answered.
Broadband X-Ray Observations of the 2018 Outburst of the Changing-Look Active Galactic Nucleus NGC 1566
Creators: name: Jana, Arghajit
name: Kumari, Neeraj
name: Nandi, Prantik
name: Naik, Sachindra
name: Chatterjee, Arka
name: Jaisawal, Gaurava K.
name: Hayasaki, Kimitake
name: Ricci, Claudio
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the nature of the changing-look Active Galactic Nucleus NGC 1566 during its June 2018 outburst. During the outburst, the X-ray intensity of the source rises up to ~25-30 times compared to its quiescent state intensity. We perform timing and spectral analysis of the source during pre-outburst, outburst, and post-outburst epochs using semi-simultaneous observations with the XMM-Newton, Nuclear Spectroscopic Telescope Array (NuSTAR), and Neil Gehrels Swift Observatories. We calculate variance, normalized variance, and fractional rms amplitude in different energy bands to study the variability. The broad-band 0.5-70 keV spectra are fitted with phenomenological models, as well as physical models. A strong soft X-ray excess is detected in the spectra during the outburst. The soft excess emission is found to be complex and could originate in the warm Comptonizing region in the inner accretion disc. We find that the increase in the accretion rate is responsible for the sudden rise in luminosity. This is supported by the q-shape of the hardness-intensity diagram that is generally found in outbursting black hole X-ray binaries. From our analysis, we find that NGC 1566 most likely harbours a low-spinning black hole with the spin parameter a* ~ 0.2. We also discuss a scenario where the central core of NGC 1566 could be a merging supermassive black hole.
description: 18 pages, 10 figures, Accepted for publication in MNRAS
O VI Observations of the Onset of Convection Zones in Main-Sequence A Stars
Creators: name: Neff, J. E.
name: Simon, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: If magnetic activity in outer stellar atmospheres is due to an interplay between rotation and subsurface convection, as is generally presumed, then one would not expect to observe indicators of activity in stars with T_eff > 8300 K. Any X-ray or ultraviolet line emission from hotter stars must be due either to a different mechanism or to an unresolved, active, binary companion. Due to their poor spatial resolution, X-ray instruments have been especially susceptible to source confusion. At wavelengths longward of 1216 Angstroms, the near ultraviolet spectra of stars hotter than this putative dividing line are dominated by photospheric continuum. We have used FUSE to obtain spectra of the subcoronal O VI emission lines, which lie at a wavelength where the photospheric continuum of the mid- and early-A stars is relatively weak. We observed 14 stars spanning a range in T_eff from 7720 to 10,000 K. Eleven of the 14 stars showed O VI emission lines, including 6 of the 8 targets with T_eff > 8300 K. At face value, this suggests that activity does not fall off with increasing temperature. However, the emission lines are narrower than expected from the projected rotational velocities of these rapidly-rotating stars, suggesting that the emission could come from unresolved late-type companions. Furthermore, the strength of the O VI emission is consistent with that expected from an unseen active K or M dwarf binary companinon, and the high x-ray to far uv luminosity ratios observed indicate that this must be the case. Our results are therefore consistent with earlier studies that have shown a rapid drop-off in activity at the radiative/convective boundary expected at T_eff about 8300 K, in agreement with conventional stellar structure models.
Tsunami hydrodynamic force on a building using a SPH real scale numerical simulation
Creators: name: Klapp, Jaime
name: Areu-Rangel, Omar S.
name: Cruchaga, Marcela
name: Aranguiz, Rafael
name: Bonasia, Rosanna
name: Seura, Mauricio Godoy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geophysics (physics.geo-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: One of the most important aspects in tsunami studies is the wave behavior when it approaches the coast. Information on physical parameters that characterize waves is often limited because of the diffilculties in achieving accurate measurements at the time of the event. The impact of a tsunami on the coast is governed by nonlinear physics such as turbulence with spatial and temporal variability. The use of the Smoothed Particle Hydrodynamic method (SPH) presents advantages over models based on two-dimensional Shallow Waters Equations (SWE), because the assumed vertical velocity simplifies hydrodynamics in two dimensions. The study presented here reports numerical SPH simulations of the tsunami event occurred in Coquimbo (Chile) on September 16 of 2015. On the basis of the reconstruction of the physical parameters that characterized this event (flow velocities, direction and water elevations), calibrated by a reference rodel, force values on buildings located on the study coast were numerically calculated, and compared with an estimate of the Chilean Structural Design Standard. Finally, discussion and conclusions of the comparison of both methodologies are presented, including an influence analysis of the topographical detail of the model in the estimation of hydrodynamic forces.
Fragmenting molecules for QC torsion drives
Creators: name: Stern, Chaya
Publisher: name: Zenodo
Year: 2019
Subjects: Open Force Field Initiatve
force field
torsions
Wiberg bond order
automated parameterization
CMILES

description: The torsion energy term describes the energy of a molecule as it rotates around its bonds and is commonly given as a sum of cosine terms with periodicities that are chosen using chemical expertise. To decrease the computational cost of fitting torsions in large molecules, it is common practice to fragment them into smaller entities that should reproduce the chemistry about each torsion of interest. However, most existing cheminformatics fragmentation schemes fragment molecules for synthetic accessibility and do not consider electronic properties.

In order to automate and generalize the process, several problems need to be addressed. These are:

	intelligent fragmentation of compounds for quantum chemistry (QC) calculations to reduce misrepresentation of the chemical environment of the torsion;
	automation of many QC torsion scans;
	automated parameter fitting and model selection,
	finding the correct granularity of chemical environments for transferable torsion types.

This talk focuses on the open-source and modular software developed to solve these problems within Open Force Field Initiative framework. The QC calculations are captured, indexed with several canonical chemical identifiers, and deposited to the open QCArchive database for future use.
description: This work was supported by MolSSI Seed and Investment Fellowship awarded to Chaya Stern (https://molssi.org/the-molssi-software-fellowship-program/).
Flemingia lacei Craib 1913
Creators: name: Do, Truong Van
name: Gao, Xin-Fen
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Flemingia
Flemingia lacei

description: 7. Flemingia lacei Craib (1913: 41). Type:— MYANMAR. Maymyo Plateau, on stony hills, 1050 m, Lace 5956 (Holotype, CAL).
Shrubs, erect, up to 60 cm tall. Young branchlets obviously ribbed, pubescent with white hairs, subscabrid or glabrescent when old. Petiole 1.5–3.5 cm long, narrowly winged, distinctly grooved above; petiolules 2–3 mm long, densely hairy. Stipules oblong-lanceolate, ca. 1.3–1.5 cm long, ca. 5 mm wide, apex acuminate, caducous. Leaves digitately 3-foliolate; leaflets papery, subequal; terminal leaflets broadly oblong-lanceolate, 4.5–7 cm long, 2.2–3 cm wide, apex acute, base cuneate; lateral leaflets smaller, sub-orbicular, apex rounded, base obliquely cuneate; adaxial surface puberulous or glabrous, abaxial surface glandular, pubescent or ciliate on the nerves; basal veins 3, lateral veins 4–5 pairs. Inflorescence capitate, axillary or terminal, 3–4 cm in diam., solitary; inflorescence axis 1.5–2 cm long, hairy. Bracts ovate, involucre, up to 1 cm long, pubescent, ciliate at the margin and in the upper portion with white hairs; pedicel extremely short, 1–2 mm long. Calyx 1.2–1.4 cm long, tube ca. 4 mm long, pubescent, lobes lanceolate, longer than tube, densely covered with black glands, the lower one longest, ca. 1 cm long, the others shorter and sub-equal. Corolla purple, petals subequal; standard oblong, ca. 1.2–1.4 cm long, base acuminate, auricles tooth-like; wings narrowly elliptic, long clawed, one with acute auricle; keel broadly elliptic, slightly curved, wider than wings, long clawed, apex acute. Pods elliptic, 6–7 mm long, 4–5 mm diam., densely pubescent with white hairs. Seeds 1, black, oblong, ca. 2–3 mm diam.
Ecology and phenology: — Flemingia lacei grows in open forest and grassland. Flowering and fruiting from January to April.
Distribution: —Endemic to Myanmar.
Notes: — Flemingia lacei is morphologically similar to F. trifoliata (Jungh.) C.Y.Wu by sharing a capitate inflorescence, but it is distinguished from the latter by morphological characters of flower, inflorescence axis, and calyx lobes.
Representative specimens: — MYANMAR. Maymyo: A.E.English 69 (CAL); C.G.Foss 70487 & 70864 (CAL).
description: Published as part of Do, Truong Van & Gao, Xin-Fen, 2020, Taxonomic revision of the genus Flemingia (Leguminosae) from Indo-Chinese floristic region, pp. 1-38 in Phytotaxa 429 (1) on page 22, DOI: 10.11646/phytotaxa.429.1.1, http://zenodo.org/record/13876867
Flemingia prostrata W. T. Aiton 1832
Creators: name: Do, Truong Van
name: Gao, Xin-Fen
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Flemingia
Flemingia prostrata

description: 9. Flemingia prostrata Roxb. ex W.T.Aiton (1832: 338). Lectotype (designated by Do et al. 2019): Flowering specimen in Roxburgh drawing No. 1894
Flemingia philippinensis Merrill & Rolfe (1908: 103). Type:—PHILLIPINE. Luzon: Lepanto, Cervantes to Mancayan, November 1905, Merrill 4460 (K-00709073!).
Subshrubs or prostrate, with a very short perennial woody stem and long annual triquetrous branches. Young branchlets trigonous-prismatic, densely grey tomentose. Petiole 1.5–4(–5) cm long, densely pubescent, narrowly winged; petiolules extremely short, densely pubescent. Stipules linear-lanceolate, 6–9 mm long, hairy, deciduous. Leaves digitately 3-foliolate; terminal leaflet oblong or ovate-lanceolate, 4–9 cm long, 1.5–3 cm wide, thickly papery, sparsely pubescent, basal veins 3, base rounded, apex obtuse to acute, sometimes with small mucro; lateral leaflets slightly smaller, oblique. Inflorescence racemose, axillary, usually 2–2.5 cm long, densely pale villous; bracts narrowly ovate-lanceolate; peduncle short. Flowers clustered. Calyx 7–8 mm long, lobes lanceolate, much longer than tube. Corolla subequalling the calyx, purple; standard oblong, shortly clawed, inconspicuously auriculate; wings falcate, clawed, both auriculate; keel elliptic, slightly curved, clawed, with acute auricle on one side. Ovary hairy. Pods elliptic, 7–10 mm long, 5–6 mm diam., pubescent, compressed. Seeds 2, black, suborbicular.
Iconography citation: — Wei (1995: 324): plate 78, figure 1.
Ecology and phenology: — Flemingia prostrata grows in secondary forest, open fields, and grasslands at 100– 500 m. Flowering from March to May, and fruiting from April to October.
Distribution: — Myanmar, China, Vietnam.
Notes: — Flemingia prostrata is clearly distinguished from the rest of the genus Flemingia within Indo-Chinese floristic region by having numerous prostrate branches and smaller leaf blade.
Representative specimens: — VIETNAM. VN-LX05377 (HN-0000027804). Hanoi: Dong Anh, Co Loa, May 1972, s.n. 00124 (HN). Ninh Binh: Dong Giao, Bai Sai, 10 June 1962, N.Q.Hao 3147 (HNU). LAOS. Xiengkhouang: M.E.Poilane 2191 (P); Muong Soui-Muong You, M.E.Poilane 20089 (P); Na Mo-Muong Luong Nam Tha, M.E.Poilane 26216 (P). Vientiane: Ban Sa Phan Meuk, Vidal 1435 (P). CHINA. Guangxi: H.Swith 1768 (IBK); C.W.Wang 88583 (IBK). Yunnan: Wuyuan, X.W.Tian et al. 293 (PE). Hunan: Yizhang Yiliu, M.X.Huang 113101 (WUK); Dongwo, D.G.Zhang et al. LXP 06-0155 (JIU); L.J.Lee 469 (IBSC). Guangdong: s.n. 2397 (IBSC); Lechang, Henan Xixiang, C.Huang 163248 (IBSC); Yingde, Wentang, X.Liang 60763 (IBSC); Wengyuan, Zhanyuan, Shangwon, X.Liu 24885 (IBSC). Hainan: X.Q.Liu 27717 (IBSC).
description: Published as part of Do, Truong Van & Gao, Xin-Fen, 2020, Taxonomic revision of the genus Flemingia (Leguminosae) from Indo-Chinese floristic region, pp. 1-38 in Phytotaxa 429 (1) on pages 23-24, DOI: 10.11646/phytotaxa.429.1.1, http://zenodo.org/record/13876867
Hidden-charm scalar tetra-quark mesons
Creators: name: Terasaki, Kunihiko
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Decays of hidden-charm scalar tetra-quark mesons as the partners of D_{s0}(2317) which has successfully been assigned to the iso-triplet scalar tetra-quark [c,n][sbar,nbar]_{I=1} meson are studied. Because OZI-rule allowed strong decays are kinematically limited, their radiative decays are expected to be important.
description: 4 pages, 0 figure, references added, typos corrected, description clarified
The effects of collaborative planning on adult learners
Creators: name: McGee, Gayle
Publisher: name: University of British Columbia
Year: 2010

description: Convential adult education folklore holds that learners involved in the program planning process will be more satisfied with and will learn more during an educational event than those not consulted. This was an experimental study where "collaboration" was an independent variable and "attitudes" and "behaviour" were dependent (or outcome) variables. Twenty-three participants were randomly assigned to treatment (10) and control (13) groups. Prior to a CUSO pre-orientation course held during one weekend in May of 1984, the treatment group "collaborated" and thus helped the planner design the weekend's activities. The control group was not consulted but merely instructed to "show-up" for the course. The independent variable, "collaboration", was based on assertions derived from Knowles' definition of andragogy and Gibbs' ideas concerning "trust". Participants' attitudes towards the course were measured by having them rate the learning activities and logistics of the weekend. They also completed three semantic differential scales which had previously been shown to have high face validity and to be relevant to the three concepts (AS A DEVELOPMENT AGENCY CUSO IS ... ; AS A CUSO VOLUNTEER I AM ... ; AS A PREORIENTATION THIS WEEKEND WAS ). Prior to examining differences between the treatment and control groups, the semantic differential data were factor analysed to provide criteria for scale scoring. Ratings of CUSO IS broke into three factors which accounted for 68 percent of the variance; ratings of I AM broke into four factors accounting for 70.2 percent of variance; those of WEEKEND WAS broke into four factors accounting for 80.2 percent of the variance. Four participant "behaviours" were also measured. Three behaviours were manifested during the course, the other concerned "follow-up" activities to be done after the course. Next, mean scores for each of the dependent (attitude and behaviour) variables were calculated. Semantic differential scale scores were calculated by summing over scales that comprised each factor. After applying a series of t-tests, it was concluded that there were no significant differences between any of the "attitudes" expressed by the treatment and control groups. But there were differences in their behaviour. Those who collaborated in the planning of the weekend retreat took on significantly more volunteer roles during the weekend (.05 level), and significantly more follow-up activities than did those who weren't involved in the planning. A number of reasons for the differences between the "attitude" and "behaviour" measures were discussed, including the nature of the participants as well as the treatment and measurement procedures. It was concluded that the attitude measures were not correlated with behaviours and that future research in this area should look more closely at behaviour, preferably through multi-factoral designs.
Discriminant balance analysis: a new approach to balance selection
Creators: name: Quinn, Thomas
Publisher: name: F1000 Research Limited
Year: 2019

description: Since the turn of the century, technological advances have made it possible to obtain a molecular profile of any tissue in a cost-effective manner. Among these advances include sophisticated high-throughput assays that measure the relative abundance of microorganisms, RNA molecules, and metabolites. While these data are most often collected to gain new insights into biological systems, they can also be used as biomarkers to create clinically useful diagnostic classifiers. How best to classify high-dimensional “-omics” data remains an area of active research. However, few explicitly model the relative nature of these data, and instead rely on cumbersome normalizations which often invoke untestable assumptions. This report (a) emphasizes the relative nature of health biomarkers, (b) discusses the literature surrounding the classification of relative data, and (c) benchmarks how different transformations perform across multiple biomarker types. In doing so, this report explores how one could use balances to engineer features prior to classification, and proposes a simple procedure, called discriminative balance analysis, to select discriminative 2- and 3-part balances.