cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Polarization corrections to single-particle energies studied within the energy-density-functional and QRPA approaches
Creators: name: Tarpanov, D.
name: Toivanen, J.
name: Dobaczewski, J.
name: Carlsson, B. G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Background: Models based on using perturbative polarization corrections and mean-field blocking approximation give conflicting results for masses of odd nuclei. Purpose: Systematically investigate the polarization and mean-field models, implemented within self-consistent approaches that use identical interactions and model spaces, so as to find reasons for the conflicts between them. Methods: For density-dependent interactions and with pairing correlations included, we derive and study links between the mean-field and polarization results obtained for energies of odd nuclei. We also identify and discuss differences between the polarization-correction and full particle-vibration-coupling (PVC) models. Numerical calculations are performed for the mean-field ground-state properties of deformed odd nuclei and then compared to the polarization corrections determined by using the approach that conserves spherical symmetry. Results: We have identified and numerically evaluated self-interaction (SI) energies that are at the origin of different results obtained within the mean-field and polarization-correction approaches. Conclusions: Mean-field energies of odd nuclei are polluted by the SI energies, and this makes them different from those obtained by using polarization-correction methods. A comparison of both approaches allows for the identification and determination of the SI terms, which then can be calculated and removed from the mean-field results, giving the self-interaction-free energies. The simplest deformed mean-field approach that does not break parity symmetry is unable to reproduce full PVC effects.
description: 18 pages, 16 figures
Additional file 4 of Integrating nutrition into the mathematics curriculum in Australian primary schools: protocol for a randomised controlled trial
Creators: name: Follong, Berit M.
name: Prieto-Rodriguez, Elena
name: Miller, Andrew
name: Collins, Clare E.
name: Bucher, Tamara
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 4. Student focus group questions.
Four-dimensional Kähler metrics admitting c-projective vector fields
Creators: name: Bolsinov, Alexey V.
name: Matveev, Vladimir S.
name: Mettler, Thomas
name: Rosemann, Stefan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: A vector field on a Kähler manifold is called c-projective if its flow preserves the J-planar curves. We give a complete local classification of Kähler real 4-dimensional manifolds that admit an essential c-projective vector field. An important technical step is a local description of 4-dimensional c-projectively equivalent metrics of arbitrary signature. As an application of our results we prove the natural analog of the classical Yano-Obata conjecture in the pseudo-Riemannian 4-dimensional case.
description: 33 pages, 2 figures
Additional file 1 of Stakeholder perceptions of non-regulatory bovine health issues in Ireland: past and future perspectives
Creators: name: Meunier, Natascha V.
name: McKenzie, Kenneth
name: Graham, David A.
name: More, Simon J.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1.
Supplementary document for Storage and retrieval of electromagnetic waves in a metasurface based on bound states in the continuum by conductivity modulation - 6663454.pdf
Creators: name: Nakanishi, Toshihiro
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Applied Physics

description: This supplemental document describes simulation setup, electric field distributions, total output energy, and resonance decay caused by ohmic loss.
Length Distributions in Loop Soups
Creators: name: Nahum, Adam
name: Chalker, J. T.
name: Serna, P.
name: Ortuno, M.
name: Somoza, A. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Statistical lattice ensembles of loops in three or more dimensions typically have phases in which the longest loops fill a finite fraction of the system. In such phases it is natural to ask about the distribution of loop lengths. We show how to calculate moments of these distributions using $CP^{n-1}$ or $RP^{n-1}$ and O(n) $σ$ models together with replica techniques. The resulting joint length distribution for macroscopic loops is Poisson-Dirichlet with a parameter $θ$ fixed by the loop fugacity and by symmetries of the ensemble. We also discuss features of the length distribution for shorter loops, and use numerical simulations to test and illustrate our conclusions.
description: 4.5 pages
Compatible almost complex structures on twistor spaces and their Gray-Hervella classes
Creators: name: Ali, Danish
name: Davidov, Johann
name: Mushkarov, Oleg
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C15, 53C25

description: In this paper we determine the Gray-Hervella classes of the compatible almost complex structures on the twistor spaces of oriented Riemannian four-manifolds considered by G. Deschamps
Additional file 1 of Molecular portrait of squamous cell carcinoma of the bovine horn evaluated by high-throughput targeted exome sequencing: a preliminary report
Creators: name: Dhruv Bhatia
name: Hinsu, Ankit
name: Ketankumar Panchal
name: Pritesh Sabara
name: Jakhesara, Subhash
name: Koringa, Prakash
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1 Statistics of data generated and processed. Table S2: List of genes and their abbreviations.
As aventuras de Belinha e tia Jaque: Em casa e no quintal
Creators: name: Lage, Rafaela Silveira Lobo
name: De Souza, Sônia Regina
Publisher: name: Zenodo
Year: 2023
Subjects: Ludicidade;
Enfermagem oncológica;
Criança;
Quimioterapia antineoplásica

description: Storytelling desenvolvido como produto da dissertação intitulada "Storytelling voltada para a promoção da saúde de crianças em quimioterapia antineoplásica". Possui abordagem lúdica dos temas, linguagem e ilustrações voltada para as crianças, procurando despertar seu interesse e por meio das histórias, podendo ser utilizado pelas crianças ou com elas juntamente com profissionais, familiares, e outras pessoas de seu convívio social. O storytelling contém orientações sobre a quimioterapia antineoplásica, seus efeitos colaterais e orientações de enfermagem para a promoção da saúde.
ALL-Ready - Stakeholder engagement plan
Creators: name: Bijttebier, Jo
name: Fosselle, Sylvie
name: Liberloo, Martin
name: Varga, Corinna
name: Herb, Irina
name: Hobeika, May
name: Mambrini-Doudet, Muriel
name: Rødel Berg, Torsten
name: Vervoort, Koen
name: Schwarz, Gerald
name: Avila Castuera, Jose Manuel
name: de Porras, Miguel
Publisher: name: Zenodo
Year: 2023
Subjects: agroecology
agroecology transition
Horizon2020
research infrastructures
living labs

description: This document outlines detailed information on stakeholder engagement activities within the ALL-Ready project. The objective of the stakeholder engagement plan is to guarantee a coordination and alignment of stakeholder engagement during all project activities.
Assessing Progress of Parkinson s Disease Using Acoustic Analysis of Phonation
Creators: name: Mekyska, Jiri
name: Galaz, Zoltan
name: Mzourek, Zdenek
name: Smekal, Zdenek
name: Rektorova, Irena
name: Eliasova, Ilona
name: Kostalova, Milena
name: Mrackova, Martina
name: Berankov, Dagmar
name: Faundez-Zanuy, Marcos
name: Lopez-de-Ipiña, Karmele
name: Alonso-Hernandez, Jesus B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper deals with a complex acoustic analysis of phonation in patients with Parkinson's disease (PD) with a special focus on estimation of disease progress that is described by 7 different clinical scales ,e. g. Unified Parkinson's disease rating scale or Beck depression inventory. The analysis is based on parametrization of 5 Czech vowels pronounced by 84 PD patients. Using classification and regression trees we estimated all clinical scores with maximal error lower or equal to 13 %. Best estimation was observed in the case of Mini-mental state examination (MAE = 0.77, estimation error 5.50 %. Finally, we proposed a binary classification based on random forests that is able to identify Parkinson's disease with sensitivity SEN = 92.86 % (SPE = 85.71 %). The parametrization process was based on extraction of 107 speech features quantifying different clinical signs of hypokinetic dysarthria present in PD.
description: 8 pages published in the 4th IEEE IWOBI 2015, pp. 115-122, 10-12 June, 2015 Donostia-San Sebastian. ISBN: 978-84-606-8733-7
NIR Schottky Photodetectors Based on Individual Single-Crystalline GeSe Nanosheet
Creators: name: Mukherjee, Bablu
name: Cai, Yongqing
name: Tan, Hui Ru
name: Feng, Yuan Ping
name: Tok, Eng Soon
name: Sow, Chorng Haur
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have synthesized high-quality, micrometer-sized, single-crystal GeSe nanosheets using vapor transport and deposition techniques. Photoresponse is investigated based on mechanically exfoliated GeSe nanosheet combined with Au contacts under a global laser irradiation scheme. The nonlinearship, asymmetric, and unsaturated characteristics of the I-V curves reveal that two uneven back-to-back Schottky contacts are formed. First-principles calculations indicate that the occurrence of defects-induced in-gap defective states, which are responsible for the slow decay of the current in the OFF state and for the weak light intensity dependence of photocurrent. The Schottky photodetector exhibits a marked photoresponse to NIR light illumination at a wavelength of 808 nm. The significant photoresponse and good responsitivity suggests its potential applications as photodetectors.
The geometry of gauged (super)conformal mechanics
Creators: name: Mirfendereski, Delaram
name: Raeymaekers, Joris
name: Şanlı, Canberk
name: Bleeken, Dieter Van den
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by recently explored examples, we undertake a systematic study of conformal invariance in one-dimensional sigma models where an isometry group has been gauged. Perhaps surprisingly, we uncover classes of sigma models which are only scale invariant in their ungauged form and become fully conformally invariant only after gauging. In these cases the target space of the gauged sigma model satisfies a deformation of the well-known conformal geometry constraints. We consider bosonic models as well as their $\mathcal{N} = 1,2,4$ supersymmetric extensions. We solve the quantum ordering ambiguities in implementing (super-) conformal symmetry on the physical Hilbert space. Examples of our general results are furnished by the $D(2,1;0)$-invariant Coulomb branch quiver models relevant for black hole physics.
description: 39 pages + 1 appendix. V2: few comments added for more clarification, typos corrected
Additional file 1 of DNA methylation during human adipogenesis and the impact of fructose
Creators: name: Tini, Giulia
name: Vijayalakshmi Varma
name: Lombardo, Rosario
name: Nolen, Greg T.
name: Lefebvre, Gregory
name: Descombes, Patrick
name: Métairon, Sylviane
name: Priami, Corrado
name: Kaput, Jim
name: Marie-Pier Scott-Boyer
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. Methylation patterns during differentiation for the 20 genes showing significant methylation changes both at 192 and 384 hours. To better inspect the patterns, genes are separated in four panels. Dots define averaged β-values for each time-point, while different colors represent different genes. Figure S2. Methylation patterns during differentiation for the 20 genes significantly methylated/expressed at 192 hours (but not at 384 hours) which methylation levels return to the baseline at 384 hours. For each panel, mean β-values at each time point are represented by dots. Different colors represent different genes. Figure S3. Distribution of the average beta-values for the DMRs on DEGs at 384 hours. β-values of DMRs that show anti-correlated changes in methylation and gene expression are depicted in pink. The blue curve describes instead the distribution of β-values for DMRs showing the same direction of regulation in methylation and gene expression levels.
Supplementary Appendix for manuscript titled "Comparison of Clinical Outcomes between COVID-19 and Influenza in Paediatric Patients: Systematic Review and Meta-Analysis"
Creators: name: Qi Cao, Yanrui Jia
Publisher: name: Zenodo
Year: 2022

description: Supplementary Appendix for the manuscript titled "Comparison of Clinical Outcomes between COVID-19 and Influenza in Paediatric Patients: Systematic Review and Meta-Analysis" Supplementary Figure 1: Sensitivity analysis for length of hospital stay Supplementary Figure 2: Funnel plot for ICU admission outcome Supplementary Figure 3: Sensitivity analysis for ICU admission Supplementary Figure 4: Sensitivity analysis for mechanical ventilation Supplementary Figure 5: Sensitivity analysis for invasive mechanical ventilation Supplementary Figure 6: Sensitivity analysis for oxygen requirement Supplementary Figure 7: Sensitivity analysis for steroid requirement Supplementary Figure 8: Sensitivity analysis for ARDS Supplementary Figure 9: Funnel plot for mortality outcome Supplementary Figure 10: Sensitivity analysis for mortality
Massive Black Hole binaries in gas-rich galaxy mergers; multiple regimes of orbital decay and interplay with gas inflows
Creators: name: Mayer, Lucio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We revisit the phases of the pairing and sinking of BHs in galaxy mergers and circunmunclear disks in light of the results of recent simulations with massive BHs embedded in predominantly gaseous backgrounds. After a general overview we discuss the importance of a fast orbital decay regime dominated by global disk torques rather than by the local dynamical friction wake. This regime can dominate at BH binary separations of a few tens of parsecs and below, following a phase of orbital circularization dominated by local dynamical friction. It is similar to Type-I migration in planetary evolution. It can bring the black holes to separations small enough for gravitational waves to take over on a timescale ranging from less than $\sim 10^7$ yr to up to $10^8$ yr, depending on whether the interstellar medium is smooth or clumpy. Eventual gap opening at sub-pc scale separations slows down but does not interrupt the orbital decay.Subsequently, we discuss a new intriguing connection between the conditions required for rapid orbital decay of massive BH binaries and those required for prominent gas inflows in gas-rich galaxies. We derive a condition for the maximum inflow rate that a circumnuclear disk can host while still maintaining a sufficiently high gas density at large radii to sustain the decay of a BH binary. We find that gas inflows rates exceeding 10 $M_{\odot}$/yr, postulated to form massive BH seeds in some direct collapse models, would stifle the sinking of massive BH binaries in gas-dominated galactic nuclei. Vice-versa, lower inflow rates, below a solar mass per year, as required to feed typical AGNs, are compatible with a fast orbital decay of BH binaries across a wide range of masses.
description: 25 pages, 7 figures, Invited article for the focus issue on "Astrophysical Black Holes" in Classical and Quantum Gravity, guest editors: D. Merritt and L. Rezzolla
Decay Phase Cooling and Inferred Heating of M- and X-class Solar Flares
Creators: name: Ryan, Daniel F.
name: Chamberlin, Phillip C.
name: Milligan, Ryan O.
name: Gallgher, Peter T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this paper, the cooling of 72 M- and X-class flares is examined using GOES/XRS and SDO/EVE. The observed cooling rates are quantified and the observed total cooling times are compared to the predictions of an analytical 0-D hydrodynamic model. It is found that the model does not fit the observations well, but does provide a well defined lower limit on a flare's total cooling time. The discrepancy between observations and the model is then assumed to be primarily due to heating during the decay phase. The decay phase heating necessary to account for the discrepancy is quantified and found be ~50% of the total thermally radiated energy as calculated with GOES. This decay phase heating is found to scale with the observed peak thermal energy. It is predicted that approximating the total thermal energy from the peak is minimally affected by the decay phase heating in small flares. However, in the most energetic flares the decay phase heating inferred from the model can be several times greater than the peak thermal energy.
description: Published in the Astrophysical Journal, 2013
On the Reality of "Zero Magnetic" Oscillations of Potential
Creators: name: Gritsunov, Alexander
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The existence of natural Zero Magnetic (ZM) oscillations of the distributed electromagnetic oscillating system (Minkowski space-time) is one of logical consequences of the self-sufficient potential formalism in electromagnetic theory. A mental experiment confirming the reality of the ZM waves of electromagnetic potential is proposed. Main characteristics of those waves are considered. A problem of possibility of application of the ZM waves to information transmission between spatially distributed objects (i.e., radio communication) is formulated.
description: 2 pages, 1 figs
Additional file 1 of Vestibular rehabilitation in multiple sclerosis: study protocol for a randomised controlled trial and cost-effectiveness analysis comparing customised with booklet based vestibular rehabilitation for vestibulopathy and a 12 month observational cohort study of the symptom reduction and recurrence rate following treatment for benign paroxysmal positional vertigo
Creators: name: Marsden, J.
name: M. Pavlou
name: R. Dennett
name: A. Gibbon
name: R. Knight-Lozano
name: L. Jeu
name: C. Flavell
name: J. Freeman
name: D. E. Bamiou
name: C. Harris
name: A. Hawton
name: E. Goodwin
name: B. Jones
name: S. Creanor
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: FOS: Biological sciences
subject: Computational Biology

description: Additional file 1. Interview Schedule.
Bioinspired Associative Memory System Based on Enzymatic Cascades
Creators: name: MacVittie, Kevin
name: Halamek, Jan
name: Privman, Vladimir
name: Katz, Evgeny
Publisher: name: arXiv
Year: 2013
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: A biomolecular system representing the first realization of associative memory based on enzymatic reactions in vitro has been designed. The system demonstrated "training" and "forgetting" features characteristic of memory in biological systems, but presently realized in simple biocatalytic cascades.
Photocurrent characteristics of individual GeSe2 nanobelt with Schottky effects
Creators: name: Mukherjee, Bablu
name: Tok, Eng Soon
name: Sow, Chorng Haur
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Single crystal GeSe2 nanobelts (NBs) were successfully grown using chemical vapor deposition techniques. The morphology and structure of the nanostructures were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffractometry, and Raman spectroscopy. Electronic transport properties, photoconductive characteristics, and temperature-dependent electronic characteristics were examined on devices made of individual GeSe2 nanobelt. Localized photoconductivity study shows that the large photoresponse of the device primarily occurs at the metal-NB contact regions. In addition, the electrically Schottky nature of nanobelt-Au contact and p-type conductivity nature of GeSe2 nanobelt are extracted from the current-voltage characteristics and spatially resolved photocurrent measurements. The high sensitivity and quick photoresponse in the visible wavelength range indicate potential applications of individual GeSe2 nanobelt devices in realizing optoelectronic switches.
Phonon-induced topological insulating phases in group IV-VI semiconductors
Creators: name: Kim, Jinwoong
name: Jhi, Seung-Hoon
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Development of topological insulating phases in IV-VI compounds under dynamic lattice deformations is studied using first-principles methods. Unlike the static state of topological phases at equilibrium conditions, we show that non-trivial topological phases are induced in the compounds by the dynamic lattice deformations from selective phonon modes. Calculations of the time-reversal polarization show that the Z2 invariant of the compounds is flipped by the atomic displacements of selective phonon modes and that the compounds exhibit oscillating topological phases upon dynamic lattice deformations. Our results indicate that the elementary excitations in solids can trigger topological phases in trivial band insulators.
description: 15 pages, 4 figures
A Users' Guide to Economical Digital Data Usage
Creators: name: Heber, Maximilian
name: Jakob, Moritz
name: Landwehr, Matthias
name: Leendertse, Jan
name: Müller, Maximilian
name: Schneider, Gabriel
name: von Suchodoletz, Dirk
name: Ulrich, Robert
Publisher: name: Zenodo
Year: 2024

description: As research data management continues to grow in importance, ever larger volumes of research data are being generated. This development, which is welcome in itself, leads to technical and organizational challenges not only in the area of research data storage, but in all phases of the research data life cycle. Against this background, this article explains possible motivations behind digital data economy with regard to organizational, technical and ethical criteria, data protection and sustainability. Against the background of central challenges, suggestions for implementation are then made for the preliminary stages and the course of a research project. Basic recommendations on digital data minimization are also provided.

A shorter edition of the guidelines was published in May 2024 in the journal o | bib (in German): https://doi.org/10.5282/o-bib/6036 

This edition contains an additional chapter (4.2) with specific practical examples. It is a translation of the German article:

Heber, M., Jakob, M., Landwehr, M., Leendertse, J., Müller, M., Schneider, G., von Suchodoletz, D., & Ulrich, R. (2024). Leitfaden zur digitalen Datensparsamkeit (mit Praxisbeispielen). Zenodo. https://doi.org/10.5281/zenodo.11445843
What is a randomization test?
Creators: name: Zhang, Yao
name: Zhao, Qingyuan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62G10, 62B15

description: The meaning of randomization tests has become obscure in statistics education and practice over the last century. This article makes a fresh attempt at rectifying this core concept of statistics. A new term -- "quasi-randomization test" -- is introduced to define significance tests based on theoretical models and distinguish these tests from the "randomization tests" based on the physical act of randomization. The practical importance of this distinction is illustrated through a real stepped-wedge cluster-randomized trial. Building on the recent literature of randomization inference, a general framework of conditional randomization tests is developed and some practical methods to construct conditioning events are given. The proposed terminology and framework are then applied to understand several widely used (quasi-)randomization tests, including Fisher's exact test, permutation tests for treatment effect, quasi-randomization tests for independence and conditional independence, adaptive randomization, and conformal prediction.
description: 45 pages, 2 figures. Accepted for publication in the Journal of American Statistical Association on 26th March, 2023. arXiv admin note: substantial text overlap with arXiv:2104.10618
Stable determination of a scattered wave from its far-field pattern: the high frequency asymptotics
Creators: name: Rondi, Luca
name: Sini, Mourad
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: Primary 35P25. Secondary 35R30

description: We deal with the stability issue for the determination of outgoing time-harmonic acoustic waves from their far-field patterns. We are especially interested in keeping as explicit as possible the dependence of our stability estimates on the wavenumber of the corresponding Helmholtz equation and in understanding the high wavenumber, that is frequency, asymptotics. Applications include stability results for the determination from far-field data of solutions of direct scattering problems with sound-soft obstacles and an instability analysis for the corresponding inverse obstacle problem. The key tool consists of establishing precise estimates on the behavior of Hankel functions with large argument or order.
description: 49 pages
Some charged polytropic models
Creators: name: Takisa, P. Mafa
name: Maharaj, S. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Einstein-Maxwell equations with anisotropic pressures and electromagnetic field are studied with a polytropic equation of state. New exact solutions to the field equations are generated in terms of elementary functions. Special cases of the uncharged solutions of Feroze and Siddiqui (Gen Relativ Gravit 43: 1025, 2011) and Maharaj and Mafa Takisa (Gen Relativ Gravit 44: 1419, 2012) are recovered. We also obtain exact solutions for a neutral anisotropic gravitating body for a polytrope from our general treatment. Graphical plots indicate that the energy density, tangential pressure and anisotropy profiles are consistent with earlier treatments which suggest relevance in describing relativistic compact stars.
description: 18 pages, To appear in Gen. Relativ. Gravit
The spinor representation formula in 3 and 4 dimensions
Creators: name: Romon, Pascal
name: Roth, Julien
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In the literature, two approaches to the Weierstrass representation formula using spinors are known, one explicit, going back to Kusner & Schmitt, and generalized by Konopelchenko and Taimanov, and one abstract due to Friedrich, Bayard, Lawn and Roth. In this article, we show that both points of view are indeed equivalent, for surfaces in R^3, Nil_3 and R^4. The correspondence between the equations of both approaches is explicitly given and as a consequence we derive alternate (and simpler) proofs of these previous theorems.
Improved Watermarking Scheme Using Discrete Cosine Transform and Schur Decomposition
Creators: name: Razafindradina, Henri Bruno
name: Razafindrakoto, Nicolas Raft
name: Randriamitantsoa, Paul Auguste
Publisher: name: arXiv
Year: 2013
Subjects: subject: Multimedia (cs.MM)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Watermarking is a technique which consists in introducing a brand, the name or the logo of the author, in an image in order to protect it against illegal copy. The capacity of the existing watermark channel is often limited. We propose in this paper a new robust method which consists in adding the triangular matrix of the mark obtained after the Schur decomposition to the DCT transform of the host image. The unitary matrix acts as secret key for the extraction of the mark. Unlike most watermarking algorithms, the host image and the mark have the same size. The results show that our method is robust against attack techniques as : JPEG compression, colors reducing, adding noise, filtering, cropping, low rotations, and histogram spreading.
Importance Sampling CAMs for Weakly-Supervised Segmentation
Creators: name: Jonnarth, Arvi
name: Felsberg, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Classification networks can be used to localize and segment objects in images by means of class activation maps (CAMs). However, without pixel-level annotations, classification networks are known to (1) mainly focus on discriminative regions, and (2) to produce diffuse CAMs without well-defined prediction contours. In this work, we approach both problems with two contributions for improving CAM learning. First, we incorporate importance sampling based on the class-wise probability mass function induced by the CAMs to produce stochastic image-level class predictions. This results in CAMs which activate over a larger extent of objects. Second, we formulate a feature similarity loss term which aims to match the prediction contours with edges in the image. As a third contribution, we conduct experiments on the PASCAL VOC 2012 benchmark dataset to demonstrate that these modifications significantly increase the performance in terms of contour accuracy, while being comparable to current state-of-the-art methods in terms of region similarity.
description: Updated to the version published at ICASSP2022
Tests of General Relativity with Gravitational-Wave Observations using a Flexible--Theory-Independent Method
Creators: name: Mehta, Ajit Kumar
name: Buonanno, Alessandra
name: Cotesta, Roberto
name: Ghosh, Abhirup
name: Sennett, Noah
name: Steinhoff, Jan
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We perform tests of General Relativity (GR) with gravitational waves (GWs) from the inspiral stage of compact binaries using a theory-independent framework, which adds generic phase corrections to each multipole of a GR waveform model in frequency domain. This method has been demonstrated on LIGO-Virgo observations to provide stringent constraints on post-Newtonian predictions of the inspiral and to assess systematic biases that may arise in such parameterized tests. Here, we detail the anatomy of our framework for aligned-spin waveform models. We explore the effects of higher modes in the underlying signal on tests of GR through analyses of two unequal-mass, simulated binary signals similar to GW190412 and GW190814. We show that the inclusion of higher modes improves both the precision and the accuracy of the measurement of the deviation parameters. Our testing framework also allows us to vary the underlying baseline GR waveform model and the frequency at which the non-GR inspiral corrections are tapered off. We find that to optimize the GR test of high-mass binaries, comprehensive studies would need to be done to determine the best choice of the tapering frequency as a function of the binary's properties. We also carry out an analysis on the binary neutron-star event GW170817 to set bounds on the coupling constant $α_0$ of Jordan-Fierz-Brans-Dicke gravity. We take two plausible approaches; in the first \emph{theory-agnostic} approach we find a bound $α_0 \lesssim 2\times 10^{-1}$ from measuring the dipole-radiation for different neutron-star equations of state, while in the second \emph{theory-specific} approach we obtain $α_0 \lesssim 4\times 10^{-1}$, both at $68\%$ credible level. These differences arise mainly due to different statistical hypotheses used for the analysis.
description: 24 pages, 13 figures
Modularity of Biochemical Filtering for Inducing Sigmoid Response in Both Inputs in an Enzymatic AND Gate
Creators: name: Bakshi, Saira
name: Zavalov, Oleksandr
name: Halamek, Jan
name: Privman, Vladimir
name: Katz, Evgeny
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We report the first systematic study of designed two-input biochemical systems as information processing gates with favorable noise-transmission properties accomplished by modifying the gate's response from convex shape to sigmoid in both inputs. This is realized by an added chemical "filter" process which recycles some of the output back into one of the inputs. We study a system involving the biocatalytic function of the enzyme horseradish peroxidase, functioning as an AND gate. We consider modularity properties, such as the use of three different input chromogens that, when oxidized yield signal-detection outputs for various ranges of the primary input, hydrogen peroxide. We also examine possible uses of different filter-effect chemicals (reducing agents) to induce the sigmoid-response. A modeling approach is developed and applied to our data, allowing us to describe the enzymatic kinetics in the framework of a formulation suitable for evaluating the noise-handling properties of the studied systems as logic gates for information processing steps.
Effective and Efficient Core Computation in Signed Networks
Creators: name: Kim, Junghoon
name: Lim, Sungsu
name: Kim, Jungeun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: With the proliferation of mobile technology and IT development, people can use social network services at any place and anytime. Among many social network mining problems, identifying cohesive subgraphs attract many attentions from different fields due to its numerous applications. Among many cohesive subgraph models, k-core is the most widely used model due to its simple and intuitive structure. In this paper, we formulate (p,n)-core in signed networks by extending k-core. (p,n)-core simultaneously guarantees sufficient internal positive edges and deficient internal negative edges. We formally prove that finding an exact (p,n)-core is NP-hard. Hence, we propose three efficient and effective algorithms to find a solution. Using real-world and synthetic networks, we demonstrate the superiority of our proposed algorithms.
Quatre applications du lemme de Zalcman à la dynamique complexe
Creators: name: Kawahira, Tomoki
Publisher: name: arXiv
Year: 2014
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: We give four applications of Zalcman's lemma to the dynamics of rational maps on the Riemann sphere: a parameter analogue of a proof of the density of repelling cycles in the Julia sets;similarity between the Mandelbrot set and the Julia sets; a construction of the Lyubich-Minsky lamination and its variant; and a unified characterization of conical points by Lyubich-Minsky and those by Martin-Mayer.
description: 26 pages, 2 figures, to appear in J. Anal. Math
Countering Wrapping Attack on XML Signature in SOAP Message for Cloud Computing
Creators: name: Kouchaksaraei, Hadi Razzaghi
name: Chefranov, Alexander G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: It is known that the exchange of information between web applications is done by means of the SOAP protocol. Securing this protocol is obviously a vital issue for any computer network. However, when it comes to cloud computing systems, the sensitivity of this issue rises, as the clients of system, release their data to the cloud. XML signature is employed to secure SOAP messages. However, there are also some weak points that have been identified, named as XML signature wrapping attacks, which have been categorized into four major groups; Simple Ancestry Context Attack, Optional element context attacks, Sibling Value Context Attack, Sibling Order Context. In this paper, two existing methods, for referencing the signed part of SOAP Message, named as ID referencing and XPath method, are analyzed and examined. In addition, a new method is proposed and tested, to secure the SOAP message. In the new method, the XML any signature wrapping attack is prevented by employing the concept of XML digital signature on the SOAP message. The results of conducted experiments show that the proposed method is approximately three times faster than the XPath method and even a little faster than ID.
description: 6 pages, 10 figures
Asymmetric bistable reflection and polarization switching in a magnetic nonlinear multilayer structure
Creators: name: Tuz, Vladimir R.
name: Novitsky, Denis V.
name: Prosvirnin, Sergey L.
name: Zhukovsky, Sergei V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Optical properties of a one-dimensional photonic structure consisting of Kerr-type nonlinear and magnetic layers under the action of an external static magnetic field in the Faraday geometry are investigated. The structure is a periodic arrangement of alternating nonlinear and magnetic layers (a one-dimensional photonic crystal) with one of the layers doubled to create a defect where periodicity is violated. Strong enhancement of nonreciprocity is observed at the frequencies of the defect modes, where linearly polarized light incident from one side of the structure undergoes 90 deg polarization rotation upon reflection, while light reflected from the other side has its polarization unchanged. Using the nonlinear transfer matrix calculations in the frequency domain, it is demonstrated that defect resonances in the nonlinear reflection spectra undergo bending, resulting in polarization bistability of reflected light. This bistability is shown to result in abrupt switching between linear polarization of the output reflected light when the input intensity is varied. This switching is confirmed in finite-difference time-domain simulations, and its hysteresis character is established.
description: 12 pages, 7 figures
Two-colour QCD with heavy quarks at finite densities
Creators: name: Langfeld, Kurt
name: Pawlowski, Jan M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend the density-of-states approach to gauge systems (LLR method) to QCD at finite temperature and density with heavy quarks. The approach features an exponential error suppression and yields the Polyakov loop probability distribution function over a range of more than hundred orders of magnitude. SU(2) gauge theory is considered in the confinement and the high-temperature phase, and at finite densities of heavy quarks. In the latter case, a smooth rise of the density with the chemical potential is observed, and no critical phenomenon associated with deconfinement due to finite densities is found.
description: 4 pages, 5 figures
Using PT-symmetry for switching applications
Creators: name: Lupu, Anatole
name: Benisty, Henri
name: Degiron, Aloyse
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: This work introduces a new class of PT-symmetry grating assisted devices for switching or modulation applications. Their operation is based on a four-wave interaction, thus marking a step in the further development of PT-symmetry devices which currently are essentially based on two-wave interactions. A remarkable feature of the new device is that all their properties also hold for the case of imperfect PT-symmetry operation, corresponding to the important practical case of fixed losses.
Authentication System Securing Index of Image using SVD and ECC
Creators: name: Rakotondraina, Tahina Ezéchiel
name: Razafindradina, Henri Bruno
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: This paper presents a new approach to securing information stored in a database. It has three components including: an operation for indexing images using Singular Value Decomposition (SVD), which will constitute the reference images, asymmetric encryption operation using Elliptic Curve Cryptosystem (ECC), aiming to make confidential these reference images stored and a technique for comparing these images to a query image using the Euclidian Distance.
RIVER WATER QUALITY MODELING USING HECRAS: THE CASE STUDY OF JEMO RIVER, ADDIS ABABA
Creators: name: JEMAL NASIR SHIKUR
Publisher: name: Zenodo
Year: 2020

description: The objective of this study was to develop water quality model for the Jemo River to assess and understand the present pollution states of it. A water quality model of the river was constructed using Geographic Information System (GIS) and Hydrologic Engineering Center River Analysis System (HEC-RAS) soft wares, and particularly HEC-RAS software used for water quality modelling to evaluate the amount, dissolved oxygen, nitrate, ammonium, carbonaceous biological oxygen demand, organophosphate and orthophosphate.
UvA - FMG RDM Guidelines
Creators: name: Oort, Frans
name: van Maanen, Annette
name: Schreurs, Emma
name: Beemsterboer, Tinka
name: Oomen, Evelien
name: Teunisse, Marco
name: van der Wal, Amber
Publisher: name: Zenodo
Year: 2024

description: This document provides guidelines for Research Data Management (RDM) within the Faculty of Social and Behavioural Sciences (FMG) at the University of Amsterdam (UvA). Developed collaboratively by FMG's Data Stewards, UvA's Open Science Coordinator, Policy Advisors, and FMG's Information Manager, these guidelines are updated annually and serve as an internal resource.

This version was finalised in June 2022.
Additional file 1 of Help seeking by male victims of domestic violence and abuse: an example of an integrated mixed methods synthesis of systematic review evidence defining methodological terms
Creators: name: Huntley, Alyson L.
name: Szilassy, Eszter
name: Potter, Lucy
name: Malpass, Alice
name: Williamson, Emma
name: Feder, Gene
Publisher: name: figshare
Year: 2020
Subjects: Medicine
Science Policy

description: Additional file 1 Appendix 1. Themes and subthemes from qualitative synthesis.
Dipole-Magnetic Photo-Recombination in Ultracold Hydrogen Plasma
Creators: name: Baltenkov, Arkadiy S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The cross section of dipole-magnetic photodisintegration of the negative hydrogen ion has been calculated within the framework of an effective-range theory. The dipole-magnetic cross section of photodetachment within the very narrow range of energy near the process threshold dominates over the dipole-electric one. It has been shown that in ultracold hydrogen plasma at temperatures below kT=3.29.10-4 K the dipole-magnetic photo-recombination becomes a main mechanism of electron capture by hydrogen atoms.
UvA - FMG RDM Guidelines v2.0
Creators: name: Schreurs, Emma
name: Beemsterboer, Tinka
name: Oomen, Evelien
name: Teunisse, Marco
name: Koho, Aino
name: Lodi, Monica
name: Poulopoulou, Marilena
name: Korsmit, Iza
name: Wijnen, Jasper
Publisher: name: Zenodo
Year: 2024

description: This document provides guidelines for Research Data Management (RDM) within the Faculty of Social and Behavioural Sciences (FMG) at the University of Amsterdam (UvA). Developed collaboratively by FMG's Data Stewards, UvA's Open Science Coordinator, Policy Advisors, and FMG's Information Manager, these guidelines are updated annually and serve as an internal resource.

The second version was finalised in June 2024.
Karate klub kroz prizmu neprofitne sportske organizacije.pdf
Creators: name: Mujanovic, Rifat
name: Mojsilović, Zoran
name: Mujanovic, Dino
Publisher: name: figshare
Year: 2022
Subjects: Sports science and exercise not elsewhere classified

description: Савремено организовани карате клубови могу се представити као комплексан систем који егзистира у законски одређеној и правно уобличеној организационој форми. Они су код нас, по свом формалноправном карактеру, формирани као спортска удружења (систем груписања лица која су се организовала ради физичког вежбања, тренирања и такмичења, као заједничке сврхе, односно циља). Дакле, као удружења грађана и непрофитне спортске организације. То значи да оваква спортска организација доминантно подразумева уређивање, координацију и вођење свих делова целине (функције, процесе и односе у њима) ради остваривања постављених спортских циљева. Управљање било којом организацијом (профитном и/или непрофитном) представља захтеван и сложен менаџерски процес, у којем људски ресурси (пре свега), делегирани у различитим хијерархијским нивоима организације, настоје да обезбеде све услове за функционисање неопходних процеса ради достизања постављених циљева организације. У раду ће се управо и сагледати сва проблематика везана за карате клубове, посматрана из угла непрофитних спортских организација.