cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ySKILLS child-friendly summary (powerpoint presentation) - French/Français
Creators: name: ySKILLS
Publisher: name: KU Leuven: ySKILLS
Year: 2023

description: Au cours de cette séance, nous discuterons des compétences numériques des jeunes en Europe. Cette présentation PowerPoint a été créée par les chercheurs du projet ySKILLS. Le projet visait à étudier ce que sont les compétences numériques et comment ces compétences influencent le bien-être des jeunes. Au cours de cette séance, nous aborderons ce sujet ensemble.
British Columbia problem gambling prevalence study : final report
Creators: name: Ipsos Reid
name: British Columbia. Ministry Of Public Safety And Solicitor General
Publisher: name: Ministry of Public Safety and Solicitor General
Year: 2003
Subjects: subject: Gambling -- British Columbia -- Public opinion
subject: Compulsive gambling -- British Columbia
subject: Gambling Literature

description: The following report presents the results of a survey conducted by Ipsos-Reid and Gemini Research to estimate the number of individuals in British Columbia who are experiencing difficulties controlling their involvement in gambling, as well as to provide information about the demographic characteristics of such individuals. The survey was commissioned by the Province of British Columbia through an RFP process. The main purpose of the 2002 survey is to assist the Province in its efforts to help individuals and groups affected by this disorder. The survey results are based on telephone interviews with a representative sample of 2,500 adult (18+) British Columbians. The interviews were conducted by Ipsos-Reid between November 12th and December 14th, 2002. All data have been weighted to accurately reflect the actual age, gender and regional distribution of adult British Columbians, according to 2001 census figures. The margin of error for the total sample of 2,500 interviews is ±2.0 percent, 95 times out of 100.
Fullerenes and proto-fullerenes in interstellar carbon dust
Creators: name: Duley, Walter W.
name: Hu, Anming
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Laboratory spectra of hydrogenated amorphous carbon (HAC) particles prepared under a variety of conditions show spectral features at 7.05, 8.5, 17.4 and 18.9 μm (1418, 1176, 575 & 529 cm-1) that have been associated with emission from C60 molecules. These lines occur in the spectra even though C60 molecules as such are not present in our samples. It appears that these four spectral lines in HAC can instead be associated with precursor molecules or "proto-fullerenes" that subsequently react to yield C60. We develop a model tracing the evolution and de-hydrogenation of HAC dust and show that the observation of an emission feature at 16.4 μm (610 cm-1) in astronomical spectra signals the presence of the pentagonal carbon rings required for the formation of fullerenes. We suggest that the set of four IR emission lines previously identified with C60 in many objects that also show the 16.4 μm feature and other polycyclic aromatic hydrocarbon bands arise from proto-fullerenes rather than C60. Tc1 is an example of a source in which de-hydrogenation has proceeded to the point where only fullerenes are present.
description: 17 pages, 2 figures, accepted ApJ Letters
Identification of potent EGFR-TKD inhibitors from NPACT database through combined computational approaches
Creators: name: Mir, Showkat Ahmad
name: Muhammad, Auwal
name: Padhiary, Archana
name: Ekka, Nirius Jenen
name: Baitharu, Iswar
name: Naik, Pradeep Kumar
name: Nayak, Binata
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biophysics
Biochemistry
Physical Sciences not elsewhere classified
Cell Biology
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer
Hematology

description: Cancer is the world’s second leading cause of death, and there are no approved herbal therapies. The epidermal growth factor receptor tyrosine kinase (EGFR-TK) receptor is a transmembrane protein with eight domains that is found in almost every cancer type and plays an important role in abnormal cell cellular function and causes malignant outcomes. The current study aimed to virtually screen phytochemicals from the NPACT database against EGFR-TKD and also to identify potential inhibitors of this transmembrane protein among plant candidates for anticancer drug development. The docking scores of the chosen phytochemicals were compared with the control (erlotinib). Kurarinone, (2S)-2-methoxykurarnione, and Sophoraflavanone-G exhibited a stronger binding affinity of −18.102 kcal/mol, −14.243 kcal/mol, and −13.759 kcal/mol than erlotinib −12.783 kcal/mol. Moreover, several online search engines were used to predict ADME and toxicity. The drug-likeness of selected phytochemicals was higher than the reference (erlotinib). A 100 ns molecular dynamic (MD) simulation was also applied to the docked conformations to examine the stability and molecular mechanics of protein-ligand interactions. Furthermore, the calculated molecular mechanics Poisson Boltzmann surface area energy of (2S)-2-methoxykurarnione was found to be −129.555 ± 0.512 kJ/mol, which approximately corresponds to the free energy of the reference molecule −130.595 ± 0.908 kJ/mol. We identify phytoconstituents present in Sophora flavescens from the NPACT database, providing key insights into tyrosine kinase inhibition and may serve as better chemotherapeutic agents. Experimental validation is required to determine the anti-EGFR potency of the potent lead molecules discussed in this study. Communicated by Ramaswamy H. Sarma
Gambling and problem gambling in Saskatchewan : final report
Creators: name: Wynne, Harold J.
name: Canadian Centre On Substance Abuse
Publisher: name: Canadian Centre on Substance Abuse
Year: 2002
Subjects: subject: Gambling -- Saskatchewan
subject: Compulsive gambling -- Saskatchewan
subject: Gambling Literature

description: Materials on this website are owned by the Government of Saskatchewan and protected by Crown copyright. Unless otherwise noted materials may be reproduced for non-commercial purposes. Reproduction of any materials for commercial purposes requires the advance written permission of the Government of Saskatchewan. Crown copyright should continue to be acknowledged in the following form: © 2009, Government of Saskatchewan.
description: The research design is a descriptive telephone survey of a random sample of 1,848 Saskatchewan adults 19 years-of-age and older. A survey questionnaire based on the new Canadian Problem Gambling Index (CPGI) guided the telephone interviews, and the survey achieved a 60% response rate, with results for the sample being accurate within ±2.3% nineteen times out of twenty.
Project instructions. EX1402 leg 1, Exploration, Gulf of Mexico (mapping), February 24 - March 15, 2014.
Creators: name: Lobecker, Elizabeth
Publisher: name: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, Office of Ocean Exploration and Research.
Year: 2014
Subjects: subject: Multibeam mapping--Mexico, Gulf of.

description: This document contains project instructions for EX-14-02 LEG 1.EX-14-02 LEG 1 operations are expected to commence on February 24, 2014 at North Kingston, RI and conclude on March 15, 2014 at Galveston, TX. Multibeam, singlebeam, and subbottom mapping operations will be conducted 24 hours a day throughout the cruise. A Kongsberg technician will be onboard for 3 days in the Gulf of Mexico for EK 60 calibration.
Student Gambling Report, 2005
Creators: name: Mackay, Terri-Lynn
name: Patton, David
name: Broszeit, Brian
Publisher: name: Addictions Foundation of Manitoba
Year: 2005
Subjects: subject: Gambling -- Manitoba
subject: Gambling -- Manitoba -- Statistics
subject: Teenage gamblers -- Manitoba
subject: Teenage gamblers -- Manitoba -- Statistics
subject: Gambling Literature

description: The purpose of this research is to present current information about the rates of gambling activity in Manitoba youth and to examine the implications of gambling on this population. This report provides an overview of the findings of 6673 students from junior and senior high schools. Although the focus of this report is on gambling and related behaviors, students were also asked questions about alcohol and drug use, parental monitoring, affected issues, delinquent behavior and recreational activities.
From Big to Little Rip in modified F(R,G) gravity
Creators: name: Makarenko, A. N.
name: Obukhov, V. V.
name: Kirnos, I. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the cosmological reconstruction in modified Gauss-Bonnet (GB) gravity. It is demonstrated that the modified GB gravity may describe the most interesting features of late-time cosmology. We derive explicit form of effective phantom cosmological models ending by the finite-time future singularity (Big Rip) and without singularities in the future (Little Rip).
description: 15 pages, 7 figures
Toolkit briefing (French/Français)
Creators: name: ySKILLS
Publisher: name: KU Leuven: ySKILLS
Year: 2023

description: L'équipe de recherche ySKILLS est heureuse de vous présenter cette précieuse ressource conçue pour impliquer les enfants et les adolescents dans l'apprentissage des compétences numériques des jeunes. Cette collection de matériaux et d'activités est le fruit de recherches approfondies menées dans le cadre du projet ySKILLS. Vous trouverez davantage de détails sur le projet sur le site web: www.yskills.eu.
Ce document d'information a pour objectif de vous fournir des informations sur le contenu et les aspects pratiques de cette boîte à outils.
Spatio-temporal isolator in lithium niobate on insulator
Creators: name: Huang, Haijin
name: Balcytis, Armandas
name: Dubey, Aditya
name: Boes, Andreas
name: Nguyen, Thach G.
name: Ren, Guanghui
name: Tan, Mengxi
name: Mitchell, Arnan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this contribution, we simulate, design, and experimentally demonstrate an integrated optical isolator based on spatiotemporal modulation in the thin-film lithium niobate on insulator waveguide platform. We used two cascaded travelling wave phase modulators for spatiotemporal modulation and a ring resonator as a wavelength filter to suppress the sidebands of the reverse propagating light. This enabled us to achieve an isolation of 27 dB. The demonstrated suppression of the reverse propagating light makes such isolators suitable for the integration with III-V laser diodes and Erbium doped gain sections in the thin-film lithium niobate on insulator waveguide platform.
description: 9 pages, 3 figures
A closure for the Master Equation starting from the Dynamic Cavity Method
Creators: name: Aurell, Erik
name: Perez, David Machado
name: Mulet, Roberto
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider classical spin systems evolving in continuous time with interactions given by a locally tree-like graph. Several approximate analysis methods have earlier been reported based on the idea of Belief Propagation / cavity method. We introduce a new such method which can be derived in a more systematic manner, and which performs better on several important classes of problems.
description: arXiv admin note: text overlap with arXiv:2205.00750
Manitoba Gambling and Problem Gambling 2006
Creators: name: Lemaire, Jackie
name: MacKay, Terri-Lynn
name: Patton, David
Publisher: name: Addictions Foundation of Manitoba
Year: 2008
Subjects: subject: Gambling -- Manitoba
subject: Compulsive gambling -- Manitoba
subject: Compulsive gamblers -- Manitoba
subject: Gambling Literature

description: This report presents the findings of the Manitoba Gambling and Problem Gambling Prevalence Study from 2006. The purpose of this study was to explore the nature and extent of gambling and gambling problems in Manitoba in addition to describing the characteristics of individuals experiencing gambling-related problems. This telephone survey was conducted with a sample of 6,007 adults 18 years and older in the province.
Inhibition of mecA and blaCTX-M from MRSA and ESBL strains of diabetic foot infection by screening antibiotics compound library: an in silico analysis
Creators: name: Pugazhendhi, Sugandhi
name: Murugesan, Thandeeswaran
name: Dhanapal, Anand Raj
name: Balakrishnan, Ajithkumar
name: Venkidasamy, Baskar
name: Vedagiri, Hemamalini
name: Prasanth, Dorairaj Arvind
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: A computational approach was exploited towards new molecule designing to target the inhibition of resistant genes mecA and blaCTX-M in MRSA and ESBL strains cultured from diabetic foot infected patients. The bioinformatic analysis involves the prediction of protein structures for mecA and blaCTX-M employing the Prime module of Schrodinger. The interactions were examined with the control antibiotics using the modelled protein structures, which revealed that Cefixime and Amikacin showed the highest binding affinity with mecA and blaCTX-M, respectively. According to the predictions of pharmacophores, the ADHRN hypothesis for mecA protein and the ADHR hypothesis for blaCTX-M protein were obtained. Subsequently, the antibiotic compound library from Selleckchem was retrieved, and molecular interactions studies were carried out to explore the interaction profiling of mecA with Tobramycin and blaCTX-M with Acyclovir. Further, the stability of protein-ligand interactions was validated through molecular dynamics simulations. Overall, this study suggests that the predicted pharmacophore model provides in-depth knowledge for repurposing an antibiotic drug with effective inhibition to enhance its therapeutic activity in the currently used ones. Communicated by Ramaswamy H. Sarma
Thermohaline instability and rotation-induced mixing. III - Grid of stellar models and asymptotic asteroseismic quantities from the pre-main sequence up to the AGB for low- and intermediate-mass stars at various metallicities
Creators: name: Lagarde, N.
name: Decressin, T.
name: Charbonnel, C.
name: Eggenberger, P.
name: Ekström, S.
name: Palacios, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The availability of asteroseismic constraints for a large sample of stars from the missions CoRoT and Kepler paves the way for various statistical studies of the seismic properties of stellar populations. In this paper, we evaluate the impact of rotation-induced mixing and thermohaline instability on the global asteroseismic parameters at different stages of the stellar evolution from the Zero Age Main Sequence to the Thermally Pulsating Asymptotic Giant Branch to distinguish stellar populations. We present a grid of stellar evolutionary models for four metallicities (Z = 0.0001, 0.002, 0.004, and 0.014) in the mass range between 0.85 to 6.0 Msun. The models are computed either with standard prescriptions or including both thermohaline convection and rotation-induced mixing. For the whole grid we provide the usual stellar parameters (luminosity, effective temperature, lifetimes, ...), together with the global seismic parameters, i.e. the large frequency separation and asymptotic relations, the frequency corresponding to the maximum oscillation power ν_{max}, the maximal amplitude A_{max}, the asymptotic period spacing of g-modes, and different acoustic radii. We discuss the signature of rotation-induced mixing on the global asteroseismic quantities, that can be detected observationally. Thermohaline mixing whose effects can be identified by spectroscopic studies cannot be caracterized with the global seismic parameters studied here. But it is not excluded that individual mode frequencies or other well chosen asteroseismic quantities might help constraining this mixing.
description: 15 pages, 11 figures, accepted for publication in A&A
Rejoinder
Creators: name: Rao, J. N. K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Rejoinder of "Impact of Frequentist and Bayesian Methods on Survey Sampling Practice: A Selective Appraisal" by J. N. K. Rao [arXiv:1108.2356]
description: Published in at http://dx.doi.org/10.1214/11-STS346REJ the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Short lead-time streamflow forecasting by machine learning methods, with climate variability incorporated
Creators: name: Rasouli, Kabir
Publisher: name: University of British Columbia
Year: 2010

description: Streamflow fluctuates as a result of different atmospheric, hydrologic, and morphologic mechanisms governing a river watershed. Variability of meteorological variables such as rainfall, temperature, wind, sea level pressure, humidity, and heating, as well as large scale climate indices like the Arctic Oscillation, Pacific/North American Pattern, North Atlantic Oscillation, and El Niño-Southern Oscillation play a role on the availability of water in a given basin. In this study, outputs of the NOAA Global Forecasting System (GFS) model, climate fluctuations, and observed data from meteohydrologic stations are used to forecast daily streamflows. Three machine learning methods are used for this purpose: support vector regression (SVR), Gaussian process (GP), and Bayesian neural network (BNN) models, and the results are compared with the multiple linear regression (MLR) model. Lead-time for forecasting varies from 1 to 7 days. This study has been applied to a small coastal watershed in British Columbia, Canada. Model comparisons show the BNN model tends to slightly outperform the GP and SVR models and all three models perform better than the MLR model. The results show that as predictors the observed data and the GFS model outputs are most effective at shorter lead-times while observed data and climate indices are most effective at longer lead-times. When the leadtime increases, climate indices such as the Arctic Oscillation, the North Atlantic Oscillation, and the Niño 3.4 which measures the central equatorial Pacific sea surface temperature (SST) anomalies, become more important in influencing the streamflow variability. The Nash-Sutcliffe forecast skill scores based on the naive methods of climatology, persistence, and a combination of them for all data and the Peirce Skill Score (PSS) and Extreme Dependency Score (EDS) for the streamflow rare events are evaluated for the BNN model. For rare events the skill scores are better when the predictors are the GFS outputs plus locally observed data compared to cases when only observed data or any combination of observed and climate indices are chosen as the predictors.
Eccentric Or Double - Alone Or A Couple?
Creators: name: Kürster, Martin
name: Trifonov, Trifon
name: Zakhozhay, Olga
name: Zechmeister, Mathias
name: Reffert, Sabine
name: Rodler, Florian
name: Lee, Man Hoi
Publisher: name: Zenodo
Year: 2016
Subjects: extrasolar planets
radial velocities
orbital resonances

description: In radial velocity (RV) observations, a pair of extrasolar planets near a 2:1 orbital resonance can be misinterpreted as a single eccentric planet, if data are sparse and measurement precision insufficient to distinguish between these models.  By simulation we quantified the mismatch arising from applying the wrong model and then used the Exo-planet Orbit Database (EOD)[1] to demonstrate that for the majority of the putative single eccentric planets announced in the literature a 2:1 resonant pair cannot be excluded as a viable model.[2]  We have begun a program with HARPS, and are planning one with CARMENES, for follow-up observations of a suitable sample of stars with the goal to distinguish between these models.  Should it turn out that a substantial fraction of the allegedly eccentric planets are actually pairs of planets in circular orbits then this bias in the planetary eccentricity distribution would have direct implications on planet formation scenarios.

[1] Wright et al. 2011, PASP 123, 412

[2] Kürster et al. 2015, A&A 577, 103
description: {"references": ["[1] Wright, J.T., et al. 2011, PASP 123, 412", "[2] K\u00fcrster, M.,  et al. 2015, A&A 577, 103", "[3] Mayor, M., et al. 2004, A&A 415, 391", "[4] Fischer, D., et al. 2007, ApJ 669, 1336"]}
Prevalence of Gambling and Problem Gambling Among Older Adults in Manitoba
Creators: name: Wiebe, Jamie
Publisher: name: Addictions Foundation of Manitoba
Year: 2000
Subjects: subject: Compulsive gamblers -- Manitoba
subject: Gamblers -- Manitoba
subject: Gambling Literature

description: The present study was conducted by the Addictions Foundation of Manitoba (AFM) to improve understanding of the extent and nature of gambling among the older adult population in Manitoba, defined as individuals 60 years and older.
Constraints on quintessence and new physics from fundamental constant
Creators: name: Thompson, Rodger I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Changes in the values of the fundamental constants mu, the proton to electron mass ratio, and alpha, the fine structure constant due to rolling scalar fields have been discussed both in the context of cosmology and in new physics such as Super Symmetry (SUSY) models. This article examines the changes in these fundamental constants in a particular example of such fields, freezing and thawing slow roll quintessence. Constraints are placed on the product of a cosmological quantity, w, the equation of state parameter, and the square of the coupling constants for mu and alpha with the field, zeta_x, x = mu,alpha, using the existing observational limits on the values of Delta x/x. Various examples of slow rolling quintessence models are used to further quantify the constraints. Some of the examples appear to be rejected by the existing data which strongly suggests that conformation to the values of the fundamental constants in the early universe is a standard test that should be applied to any cosmological model or suggested new physics.
description: Accepted for publication in the Monthly Notices of the Royal Astronomical Society Letters
Universal scaling of Klein bottle entropy near conformal critical points
Creators: name: Zhang, Yueshui
name: Hulsch, Anton
name: Zhang, Hua-Chen
name: Tang, Wei
name: Wang, Lei
name: Tu, Hong-Hao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the Klein bottle entropy [Phys. Rev. Lett. 119, 261603 (2017)] for conformal field theories (CFTs) perturbed by a relevant operator is a universal function of the dimensionless coupling constant. The universal scaling of the Klein bottle entropy near criticality provides an efficient approach to extract the scaling dimension of lattice operators via data collapse. As paradigmatic examples, we validate the universal scaling of the Klein bottle entropy for Ising and Z3 parafermion CFTs with various perturbations using numerical simulation with continuous matrix product operator approach.
description: 5+5 pages, 3 figures, published version
GABAA and serotonergic receptors participation in anxiolytic effect of chalcones in adult zebrafish
Creators: name: Mendes, Francisco Rogênio Silva
name: da Silva, Antonio Wlisses
name: Ferreira, Maria Kueirislene Amâncio
name: de Lima Rebouças, Emanuela
name: Barbosa, Italo Moura
name: da Rocha, Matheus Nunes
name: Ribeiro, Walber Henrique Ferreira
name: de Menezes, Ramon Róseo Paula Pessoa Bezerra
name: Magalhães, Emanuel Paula
name: Marinho, Emanuelle Machado
name: Marinho, Márcia Machado
name: Bandeira, Paulo Nogueira
name: de Menezes, Jane Eire Silva Alencar
name: Marinho, Emmanuel Silva
name: dos Santos, Hélcio Silva
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Science Policy
subject: Mental Health
subject: Computational Biology

description: The prevalence of anxiety is a significant public health problem, being the 24th leading cause of disability in individuals affected by this disorder. In this context, chalcones, a flavonoid subclass obtained from natural or synthetic sources, interact with central nervous system (CNS) receptors at the same binding site as benzodiazepines, the primary drugs used in the treatment of anxiety. Thus, our study investigates the anxiolytic effect of synthetic chalcones derived from the natural product 2-hydroxy-3,4,6-trimethoxyacetophenone isolated from Croton anisodontus Müll.Arg. in modulating anxiolytic activity via GABAergic and serotoninergic neurotransmission in an adult zebrafish model. Chalcones 1 and 2 were non-toxic to adult zebrafish and showed anxiolytic activity via GABAA receptors. Chalcone 2 also had its anxiolytic action reversed by the antagonist granisetron, indicating the participation of serotonergic receptors 5HTR3A/3B in the anxiolytic effect. In addition, molecular docking results showed that chalcones have a higher affinity for the GABAA receptor than DZP and binding in the same region of the DZP binding site, indicating a similar effect to the drug. Furthermore, the interaction of chalcones with GABAA and 5-HT3A receptors demonstrates the anxiolytic effect potential of these molecules. Communicated by Ramaswamy H. Sarma
Disordered Elastic Systems and One-Dimensional Interfaces
Creators: name: Agoritsas, Elisabeth
name: Lecomte, Vivien
name: Giamarchi, Thierry
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We briefly introduce the generic framework of Disordered Elastic Systems (DES), giving a short `recipe' of a DES modeling and presenting the quantities of interest in order to probe the static and dynamical disorder-induced properties of such systems. We then focus on a particular low-dimensional DES, namely the one-dimensional interface in short-ranged elasticity and short-ranged quenched disorder. Illustrating different elements given in the introductory sections, we discuss specifically the consequences of the interplay between a finite temperature T>0 and a finite interface width ξ>0 on the static geometrical fluctuations at different lengthscales, and the implications on the quasistatic dynamics.
description: Proceedings of the International Workshop on Electronic Crystals (ECRYS), Cargese (2011)
The Solar Dynamo Zoo
Creators: name: Egeland, Ricky
name: Soon, Willie
name: Baliunas, Sallie
name: Hall, Jeffrey C
name: Pevtsov, Alexei A.
name: Henry, Gregory W.
Publisher: name: Zenodo
Year: 2016
Subjects: Sun
Stellar Activity
Stellar Rotation
Long-Term Variability
Stellar Cycles

description: We present composite time series of Ca II H & K line core emission indices of up to 50 years in length for a set of 27 solar-analog stars (spectral types G0-G5; within ~10% of the solar mass) and the Sun.  These unique data are available thanks to the long-term dedicated efforts of the Mount Wilson Observatory HK project, the Lowell Observatory Solar-Stellar Spectrograph, and the National Solar Observatory/Air Force Research Laboratory/Sacramento Peak K-line monitoring program.  The Ca II H & K emission originates in the lower chromosphere and is strongly correlated with the presence of magnetic plage regions in the Sun.  These synoptic observations allow us to trace the patterns long-term magnetic variability and explore dynamo behavior over a wide range of rotation regimes and stellar evolution timescales.

In this poster, the Ca HK observations are expressed using the Mount Wilson S-index.  Each time series is accompanied by a Lomb-Scargle periodogram, fundemental stellar parameters derived from the Geneva-Copenhagen Survey, and statistics derived from the time series including the median S-index value and seasonal and long-term amplitudes.  Statistically significant periodogram peaks are ranked according to a new cycle quality metric.  We find that clear, simple, Sun-like cycles are the minority in this sample.
description: Poster #132
The Problem of Presentations: An EAP Lecturer’s Approach to Teaching Presentation Skills
Creators: name: Martin, Jodie L.
Publisher: name: BC TEAL Journal
Year: 2023

description: Presentations are often incorporated into higher education without any instruction on how to present, or the features by which presentations will be assessed. This lack of instruction risks disadvantaging many students judged by tacit criteria they may not meet, including English as an additional language students, first generation university students, and international and/or cross-disciplinary students coming from educational contexts with different presentation styles and values. This paper presents one lecturer’s efforts to meet the needs of her students to develop presentation skills by focusing a significant portion of an English for Academic Purposes (EAP) course on presentations over four years. The paper outlines the curricular design for this focus, which included multiple presentations in multiple formats and an explicit Teaching and Learning Cycle (Rothery, 1994). Further, it presents some of the concepts and approaches that are used to shape an intersemiotic awareness of presentations, including the grammar of bullet point form, image-language relations, how to talk about complex slides, presentation delivery strategies, and how to scaffold practising in class. Finally, it concludes with some challenges about the formal evaluation of such presentations. It offers both design and activity descriptions for interested teachers to consider incorporating, whether in EAP or in other courses.
description: BC TEAL Journal, Vol. 8 No. 1 (2023)
Mathematical Model for Current Transformer Based On Jiles-Atherton Theory and Saturation Detection Method
Creators: name: Li, Xiang
Publisher: name: University of Kentucky
Year: 2016
Subjects: subject: Power and Energy

description: Current transformer saturation will cause the secondary current distortion. When saturation occurs, the secondary current will not be linearly proportional to the primary current, which may lead to maloperation of protection devices. This thesis researches and tests two detecting methods: Fast Fourier Transform (FFT) and Wavelet Transform based methods. Comparing these two methods, FFT has a better performance in steady state saturation, and Wavelet Transform can determine singularity to provide the moment of distortion.  The Jiles-Atherton (J-A) theory of ferromagnetic hysteresis is one approach used in electromagnetics transient modeling. With decades of development, the J-A model has evolved into different versions. The author summarizes the different models and implements J-A model in both MATLAB and Simulink.
Comparing quantumness criteria
Creators: name: Martin, Jerome
name: Micheli, Amaury
name: Vennin, Vincent
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Measuring the quantumness of a system can be done with a variety of methods. In this article we compare different criteria, namely quantum discord, Bell inequality violation and non-separability, for systems placed in a Gaussian state. When the state is pure, these criteria are equivalent, while we find that they do not necessarily coincide when decoherence takes place. Finally, we prove that these criteria are essentially controlled by the semi-minor axis of the ellipse representing the state's Wigner function in phase space.
description: 8 pages without appendix (total 19 pages), 5 figures. Matches published version in EPL
Problem gambling in Europe : an overview
Creators: name: Griffiths, Mark
Publisher: name: Nottingham Trent University
Year: 2009
Subjects: subject: Compulsive gambling -- Europe
subject: Gambling
subject: Gambling Literature

description: 86 p. : 30 cm
description: This report provides a European country-by-country analysis of the known empirical (and in some cases anecdotal) evidence of gambling and problem gambling in that particular country.
Robustness of entanglement in Hawking radiation for optical systems immersed in thermal baths
Creators: name: Agullo, Ivan
name: Brady, Anthony J.
name: Kranas, Dimitrios
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement is the quantum signature of Hawking's particle pair-creation from causal horizons, for gravitational and analog systems alike. Ambient thermal fluctuations, ubiquitous in realistic situations, strongly affects the entanglement generated in the Hawking process, completely extinguishing it when the ambient temperature is comparable to the Hawking temperature. In this work, we show that optical analog systems have a built-in robustness to thermal fluctuations which are at rest in the laboratory. In such systems, horizons move relative to the laboratory frame at velocities close to the speed of light. We find that a subtle interplay between this relative velocity and dispersion protects the Hawking-generated entanglement -- allowing ambient temperatures several orders of magnitude larger than the Hawking temperature without significantly affecting entanglement.
description: 13 + 3 pages, 5 figures. Comments and questions welcome
Starlet higher order statistics for galaxy clustering and weak lensing
Creators: name: Ajani, Virginia
name: Harnois-Déraps, Joachim
name: Pettorino, Valeria
name: Starck, Jean-Luc
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a first application to photometric galaxy clustering and weak lensing of wavelet based multi-scale higher order summary statistics: starlet peak counts and starlet $\ell_1$-norm. Peak counts are the local maxima in the map and the $\ell_1$-norm is computed via the sum of the absolute values of the starlet (wavelet) decomposition coefficients of a map, providing a fast multi-scale calculation of the pixel distribution, encoding the information of all pixels in the map. We employ the cosmo-SLICS simulations sources and lenses catalogues and we compute wavelet based higher order statistics in the context of combined probes and their potential when applied to the weak lensing convergence maps and galaxy maps. We get forecasts on the matter density parameter $Ω_{\rm m}$, the reduced Hubble constant $h$, the matter fluctuation amplitude $σ_8$, and the dark energy equation of state parameter $w_0$. We find that, in our setting for this first application, considering the two probes as independent, starlet peaks and the $\ell_1$-norm represent interesting summary statistics that can improve the constraints with respect to the power spectrum also in the case of photometric galaxy clustering and when the two probes are combined.
description: A&A Letters to the Editor, Forthcoming article, accepted
Potential integrals on triangles
Creators: name: Carley, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Numerical Analysis (math.NA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 65N38

description: The problem of evaluating potential integrals on planar triangular elements has been addressed using a polar coordinate decomposition. The resulting formulae are general, exact, easily implemented, and have only one special case, that of a field point lying in the plane of the element. Results are presented for the evaluation of the potential and its gradients, where the integrals must be treated as principal values or finite parts, for elements with constant and linearly varying source terms. These results are tested by application to a single triangular element to the evaluation of the potential gradient outside the unit cube. In both cases, the method is shown to be accurate and convergent.
description: Submitted to International Journal for Numerical Methods in Engineering
The eruption of kimberlite : insights from the Victor North kimberlite pipes, Northern Ontario, Canada
Creators: name: Van Straaten, Bram Ivo
Publisher: name: University of British Columbia
Year: 2010

description: This dissertation describes the volcanic facies, petrology and economic aspects of the diamondiferous Victor North kimberlite complex (Northern Ontario, Canada) using detailed drill core logging, petrographic observations, electron microprobe analysis, and physical volcanological calculations. This research project is aimed at improving our understanding of kimberlite emplacement models, as fragmentation and eruption mechanisms for these deposits are controversial. The results of this study show that the youngest kimberlite pipe (Victor Northwest) is filled by two similar eruption cycles. Each cycle starts with explosive crater-excavation forming predominantly pyroclastic deposits, followed by crater-filling with dark and competent rocks, and ends with volcanic quiescence resulting in formation of pipe wall collapse breccias and minor resedimented volcaniclastic kimberlite. Textural observations and eruption duration calculations suggest that the second crater-excavating eruption is phreatomagmatic in nature. This is based on the presence of fine-grained, well-mixed country rock fragment-rich, broken olivine-rich pyroclastic deposits containing small variably vesicular irregularly shaped juvenile pyroclasts as well as clastic pyroclasts. The crater-excavation stage is followed by formation of spatter-fed dark and competent clastogenic rocks. Evidence for a clastogenic origin includes the deposit morphology, presence of remnant pyroclasts, angular broken olivines, as well as the gradational nature of contacts with the enveloping pyroclastic units. Estimated eruption durations for each cycle range from days to months. The cross-cutting kimberlite pipe (Victor Main) comprises two macroscopically similar country rock fragment-poor pyroclastic kimberlites that have contrasting macro diamond sample grades. This study explains the variation in diamond grade within Victor Main by differential sampling of mantle material (incl. diamond) by two different magma batches that formed the high- and low-grade domains. Victor Main lacks textures indicative of phreatomagmatism, and the relatively long calculated phreatomagmatic eruption duration suggests that magmatic eruptions are most likely responsible for the formation of these deposits. This study concludes that, despite the generally more extreme range of physical properties of kimberlite melt, kimberlites erupt in a similar fashion as common basaltic-rhyolitic volcanoes and display a similarly diverse range of fragmentation processes and deposition styles. The geological and emplacement models presented here have broad economic implications for kimberlite exploration and mining.
GB1 hairpin kinetics: capturing the folding pathway with molecular dynamics, replica exchange and optimal dimensionality reduction
Creators: name: Kuczera, Krzysztof
name: Szoszkiewicz, Robert
name: Shaffer, Christopher L.
name: Jas, Gouri S.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Cell Biology
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Computational Biology

description: We have performed molecular dynamics (MD) and replica-exchange (REMD) simulations of folding of the GB1 hairpin peptide in aqueous solution. REMD results were consistent with a cooperative zipper folding model. 120 μs MD trajectories at 320 K yielded relaxation times of 1.8 μs and 100 ns, with the slower assigned to global folding. The MD folding/unfolding transitions also followed the cooperative zipper model, specifying nucleation at the central turn followed by consecutive hydrogen bond formation. Formation of hydrogen bonds and hydrophobic contacts were highly correlated. Coarse-grained kinetic models constructed with the Optimal Dimensionality Reduction (ODR) approach found a folding time of 3.3 μs and unfolding time of 4.0 μs. Additionally, relaxation times in the 130–170 ns range could be assigned to formation of the transition state and off-path intermediates. The unfolded state was the most highly populated and, significantly, most heterogenous, assembling the largest number of microstates, primarily composed of extended and turn structures. The folded state was also heterogenous, but a to a lesser degree, involving the fully folded and partially folded in-register hairpins at early stages of the zipper pathway. The transition state corresponded to the nucleated hairpin, with central turn and first beta-sheet hydrogen bond, while the off-path intermediates were off-register partial hairpins. Our simulation results were in excellent agreement with experimental data on folded fraction, relaxation time and folding mechanism. The new findings from this work suggest a highly cooperative zipper folding mechanism, nascent hairpin transition state and ∼100 ns relaxation related to intermediate formation. Communicated by Ramaswamy H. Sarma
Data-based determination of the isospin-limit light-quark-connected contribution to the anomalous magnetic moment of the muon
Creators: name: Boito, Diogo
name: Golterman, Maarten
name: Maltman, Kim
name: Peris, Santiago
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We describe how recent determinations of exclusive-mode contributions to $a_μ^{\rm LO,HVP}$, the leading-order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, can be used to provide, up to small electromagnetic (EM) corrections accessible from the lattice, a data-based dispersive determination of $a_μ^{\rm lqc;\, IL}$, the isospin-limit, light-quark-connected contribution to $a_μ^{\rm LO,HVP}$. Such a determination is of interest in view of the existence of a number of lattice results for this quantity, emerging evidence for a tension between lattice and dispersive determinations of $a_μ^{\rm LO,HVP}$, and the desire to clarify the source of this tension. Taking as input for the small EM correction that must be applied to the purely data-driven dispersive determination the result $-0.93(58)\times 10^{-10}$ obtained in a recent BMW lattice study, we find $a_μ^{\rm lqc;\, IL}$ to be $635.0(2.7)\times 10^{-10}$ if the results of Keshavarzi, Nomura and Teubner are used for the exclusive-mode contributions and $638.4(4.1)\times 10^{-10}$ if instead those of Davier, Höcker, Malaescu and Zhang are used.
description: 19 pages, 1 figure
Study of Structural, Magnetic and Electrical properties on Ho - substituted BiFeO3
Creators: name: Rao, T. Durga
name: Karthik, T.
name: Srinivas, Adiraj
name: Asthana, Saket
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The polycrystalline Bi1-xHoxFeO3 (x=0, 0.05, 0.1) compounds were synthesized by conventional solid-state route. Rietveld refinement reveals that all the compounds were stabilized in rhombohedral structure with R3c (IUCr No. 161) space group. A competing ferro and anti-ferro magnetic interaction was observed in Ho-substituted compounds. A change in the Fe-O-Fe bond-angle and Fe-O bond distance increase the Neel Transition temperature with increasing Ho concentration. The appearance of peak in imaginary part of impedance (Z") for each concentration and shifting of this peak with temperature towards higher frequency side indicated that the presence of electric relaxations. Correlated Barrier Hopping model (CBH) was employed to explain the frequency and temperature dependence of ac conductivity and the mechanism of transport in the material BFO and Ho substituted BFO. Density of states near Fermi level was calculated by using the ac conductivity data.
Jumping Dynamics
Creators: name: Sannino, Francesco
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose an alternative paradigm to the conjectured Miransky scaling potentially underlying the physics describing the transition from the conformally broken to the conformally restored phase when tuning certain parameters such as the number of flavors in gauge theories. According to the new paradigm the physical scale and henceforth also the massive spectrum of the theory jump at the lower boundary of the conformal window. In particular we propose that a theory can suddenly jump from a Quantum Chromodynamics type spectrum, at the lower boundary of the conformal window, to a conformal one without particle interpretation. The jumping scenario, therefore, does not support a near-conformal dynamics of walking type. We will also discuss the impact of jumping dynamics on the construction of models of dynamical electroweak symmetry breaking.
description: 4 pages. 6 Figures
Twist-tunable moiré optical resonances
Creators: name: Salakhova, Natalia S.
name: Fradkin, Ilia M.
name: Dyakov, Sergey A.
name: Gippius, Nikolay A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Multilayer stacks of twisted optical metasurfaces are considered as a prospective platform for chiral nanophotonic devices. Such structures are primarily used for the realization of circularly polarized light sources, artificial optical rotation, and circular dichroism. At the same time, the behavior of their hybrid photonic modes is strongly affected by the moiré-pattern of superimposed periodic constituents. In this work, we show that moiré-periodicity in bilayer dielectric photonic crystal slabs leads to an arise of unlimitedly narrow optical resonances, which are very sensitive to the relative twist and gap width between the sublayers. We demonstrate the structure providing twist-tuning of the hybrid mode wavelength in the range of 300--600~nm with quality factor varying from~$10^2$~up~to~$10^5$ correspondingly. The obtained results pave the wave for the utilization of moiré-assisted effects in multilayer photonic crystal slabs.