cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Astrometric Identification of Nearby Binary Stars I: Predicted Astrometric Signals
Creators: name: Penoyre, Zephyr
name: Belokurov, Vasily
name: Evans, N. Wyn
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We examine the capacity to identify binary systems from astrometric errors and deviations alone. Until the release of the fourth Gaia data release we lack the full astrometric time series that the satellite records, but as we show can still infer the presence of binaries from the best fit models, and their error, already available. We generate a broad catalog of simulated binary systems within 100 pc, and examine synthetic observations matching the Gaia survey's scanning law and astrometric data processing routine. We show how the Unit Weight Error (UWE) and Proper Motion Anomaly (PMA) vary as a function of period, and the properties of the binary. Both UWE and PMA peak for systems with a binary period close to the time baseline of the survey. Thus UWE can be expected to increase or remain roughly constant as we observe the same system over a longer baseline, and we suggest $UWE_{eDR3}>1.25$ and $ΔUWE/UWE_{eDR3}>-0.25$ as criteria to select astrometric binaries. For stellar binaries we find detectable significant astrometric deviations for 80-90\% of our simulated systems in a period range from months to decades. We confirm that for systems with periods less than the survey's baseline the observed $UWE$ scales $\propto \ \varpi$ (parallax), $a$ (semi-major axis) and $Δ=\frac{|q-l|}{(1+q)(1+l)}$ where $q$ and $l$ are the mass and light ratio respectively, with a modest dependence on viewing angle. For longer periods the signal is suppressed by a factor of roughly $\propto P^{-2}$ (period). PMA is largest in orbits with slightly longer periods but obeys the same approximate scaling relationships.
description: 21 pages, 18 figures
АКТУАЛЬНЫЕ ВОПРОСЫ ОЦЕНКИ АКТИВОВ В ТРУДАХ ПРОФЕССОРА Е.С. ОЗЕРОВА
Creators: name: ПУПЕНЦОВА СВЕТЛАНА ВАЛЕНТИНОВНА
Publisher: name: Имущественные отношения в Российской Федерации
Year: 2020
Subjects: НАИБОЛЕЕ ЭФФЕКТИВНОЕ ИСПОЛЬЗОВАНИЕ ОБЪЕКТОВ ОЦЕНКИ
МОДЕЛЬ ДИАПАЗОННОЙ ОЦЕНКИ РЫНОЧНОЙ СТОИМОСТИ
ИМИТАЦИОННОЕ МОДЕЛИРОВАНИЕ В ОЦЕНКЕ
ИЕРАРХИИ СТОИМОСТЕЙ
АКСИОМА ТЕОРИИ ОЦЕНКИ
РАВНОВЕСНАЯ ЦЕНА
THE MOST EFFECTIVE USE OF ALL TYPES OF VALUATION OBJECTS
A MODEL OF RANGE VALUATION OF MARKET VALUE
SIMULATION MODELING IN VALUATION
VALUE HIERARCHY AXIOM OF VALUATION THEORY
EQUILIBRIUM PRICE

description: В статье рассматриваются предложенные профессором Е.С. Озеровым иерархия стоимостей, обязательность реализации принципа наиболее эффективного использования при оценке всех типов объектов, включая бизнес, модель диапазонной оценки рыночной стоимости, полученной методом имитационного моделирования при применении затратного и доходного подходов. Автор рекомендует оценщикам изучать наследие Е.С. Озерова, чтобы не только качественно выполнять предписанные техническим заданием оценочные услуги, но и выступать профессиональным консультантом для собственника.
title: Biodiversité des sols
Publisher: name: Réseau Thématique de Recherche Milieux et Diversité
Year: 2020

description: Dans le cadre de ses activités, le RTR MiDi (Milieux et Diversité) a organisé mardi 10 novembre 2020 une journée en ligne, autour de la thématique de la biodiversité des sols.
Synthesis and Evaluation of Polyfunctionally Substituted Heterocyclic Compounds Derived from 2-Cyano-N-(5-pentadecyl-1,3,4-thiadiazol-2-yl)acetamide
Creators: name: El-Sayed, Refat
name: Shaldom, Amani
name: Mazrouee, Layla Al
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biotechnology
subject: Physiology
subject: FOS: Biological sciences
subject: Microbiology
subject: Physics
subject: Biochemistry
subject: Biological Sciences
subject: Sociology
subject: FOS: Sociology
subject: Chemistry
subject: Earth and Environmental Sciences

description: Reaction of 5-pentadecyl-1,3,4-thiadiazol-2-amine 2 with ethyl cyanoacetate gave 2-cyano-N-(5-pentadecyl-1,3,4-thiadiazol-2-yl)acetamide 3, which was used to synthesize different heterocyclic derivatives with coumarin, pyrazole, thiazole, pyridine, pyrimidine, and thiophene rings. Propoxylation of these compounds by using 5 mol of propylene oxide produced nonionic surface active agents. Antimicrobial and surface activities were evaluated.
New limits on light dark matter - proton cross section from the cosmic large-scale structure
Creators: name: Rogers, Keir K.
name: Dvorkin, Cora
name: Peiris, Hiranya V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We set the strongest limits to-date on the velocity-independent dark matter (DM) - proton cross section $σ$ for DM masses $m = 10\,\mathrm{keV}$ to $100\,\mathrm{GeV}$, using large-scale structure traced by the Lyman-alpha forest: e.g., a 95% lower limit $σ< 6 \times 10^{-30}\,\mathrm{cm}^2$, for $m = 100\,\mathrm{keV}$. Our results complement direct detection, which has limited sensitivity to sub-GeV DM. We use an emulator of cosmological simulations, combined with data from the smallest cosmological scales used to-date, to model and search for the imprint of primordial DM-proton collisions. Cosmological bounds are improved by up to a factor of 25.
description: 12 pages, 5 figures. Minor changes to match version accepted for publication in PRL
A robust monolithic solver for phase-field fracture integrated with fracture energy based arc-length method and under-relaxation
Creators: name: Bharali, Ritukesh
name: Goswami, Somdatta
name: Anitescu, Cosmin
name: Rabczuk, Timon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The phase-field fracture free-energy functional is non-convex with respect to the displacement and the phase field. This results in a poor performance of the conventional monolithic solvers like the Newton-Raphson method. In order to circumvent this issue, researchers opt for the alternate minimization (staggered) solvers. Staggered solvers are robust for the phase-field based fracture simulations as the displacement and the phase-field sub-problems are convex in nature. Nevertheless, the staggered solver requires very large number of iterations (of the order of thousands) to converge. In this work, a robust monolithic solver is presented for the phase-field fracture problem. The solver adopts a fracture energy-based arc-length method and an adaptive under-relaxation scheme. The arc-length method enables the simulation to overcome critical points (snap-back, snap-through instabilities) during the loading of a specimen. The use of an under-relaxation scheme stabilizes the solver by preventing the divergence due to an ill-behaving stiffness matrix. The efficiency of the proposed solver is further amplified with an adaptive mesh refinement scheme based on PHT-splines within the framework of isogeometric analysis. The numerical examples presented in the manuscript demonstrates the efficacy of the solver. All the codes and data-sets accompanying this work will be made available on GitHub (https://github.com/rbharali/IGAFrac).
Modulation of pulse profile as a signal for phase transitions in a pulsar core
Creators: name: Bagchi, Partha
name: Layek, Biswanath
name: Sarkar, Anjishnu
name: Srivastava, Ajit M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate detailed modification of pulses from a pulsar arising from the effects of phase transition induced density fluctuations on the pulsar moment of inertia. We represent general statistical density fluctuations using a simple model where the initial moment of inertia tensor of the pulsar (taken to be diagonal here) is assumed to get random additional contributions for each of its component which are taken to be Gaussian distributed with certain width characterized by the strength of density fluctuations $ε$. Using sample values of $ε$, (and the pulsar deformation parameter $η$) we numerically calculate detailed pulse modifications by solving Euler's equations for the rotational dynamics of the pulsar. We also give analytical estimates which can be used for arbitrary values of $ε$ and $η$. We show that there are very specific patterns in the perturbed pulses which are observable in terms of modulations of pulses over large time periods. In view of the fact that density fluctuations fade away eventually leading to a uniform phase in the interior of pulsar, the off-diagonal components of MI tensor also vanish eventually. Thus, the modification of pulses due to induced wobbling (from the off-diagonal MI components) will also die away eventually. This allows one to distinguish these transient pulse modulations from the effects of any wobbling originally present. Further, the decay of these modulations in time directly relates to relaxation of density fluctuations in the pulsar giving valuable information about the nature of phase transition occurring inside the pulsar.
description: 11 pages, 6 figures, Accepted for publication in MNRAS
Effect of Base for the Efficient Synthesis of 4-Formylcoumarins and 4-Formylcarbostyrils
Creators: name: Megharaja Holiyachi
name: Samundeeswari L. Shastri
name: Bahubali M. Chougala
name: Lokesh A. Shastri
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Physics
subject: Biological Sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Chemistry
subject: Earth and Environmental Sciences
subject: Biotechnology
subject: Biochemistry
subject: Biophysics

description: The first efficient transformation of 4-bromomethylcoumarins and 4-bromomethylcarbostyrils to 4-Formylcoumarins and 4-Formylcarbostyril under aqueous condition has been achieved by modifying novel ‘Kornblum’ method in excellent yield. Hence, the experimental method is very simple and more economic, no further purification required and the experimental conditions have been optimized. All the isolated compounds were characterized by IR, NMR, mass and some of the compounds by single crystal X-ray analysis.
Plasma asymmetry, electron and ion energy distribution function in capacitive discharges excited by tailored waveforms
Creators: name: Sharma, Sarveshwar
name: Sirse, Nishant
name: Kuley, Animesh
name: Turner, Miles M
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Using particle-in-cell simulation technique, we investigate the plasma and ionization asymmetry, electron and ion energy distribution function in capacitive discharges excited by tailored waveforms. At a base frequency of 13.56 MHz, three different waveforms namely, sinusoidal, saw-tooth, and square are applied for a constant current density of 50 A/m2 and 5 mTorr argon gas pressure. The simulation results show that the square waveform produces the highest plasma density in the discharge, whereas maximum asymmetry is observed for plasma excited by sawtooth like waveform. Both square and sawtooth waveforms generate multiple beams of high-energy electrons from near to the expanding phase of the sheath edge followed by the high-frequency modulations up to 100 MHz on the instantaneous sheath position. The electron energy distribution function depicts 3 electron temperature and highly elevated tail-end electrons for the square waveform in comparison to the sinusoidal and sawtooth waveform. The ion energy distribution function is bimodal at both powered and grounded electrodes with a large asymmetry and narrow type distribution in the case of sawtooth like waveform. These results suggest that the choice of the waveform is highly critical for achieving maximum asymmetry and plasma density simultaneously in the discharge.
К ВОПРОСУ О ЛЕГАЛИЗАЦИИ САМОЗАНЯТЫХ В РОССИЙСКОЙ ФЕДЕРАЦИИ
Creators: name: РУЧКИНА ГУЛЬНАРА ФЛЮРОВНА
Publisher: name: Имущественные отношения в Российской Федерации
Year: 2020
Subjects: ЛЕГАЛИЗАЦИЯ САМОЗАНЯТЫХ
НЕСТАНДАРТНАЯ ЗАНЯТОСТЬ
НАЛОГ НА ПРОФЕССИОНАЛЬНЫЙ ДОХОД
ФИКТИВНАЯ САМОЗАНЯТОСТЬ
ЛЕГАЛИЗАЦИЯ ТРУДОВЫХ МИГРАНТОВ
LEGALIZATION OF SELF- EMPLOYED
PRECARIOUS WORK
PROFESSIONAL INCOME TAX
FICTITIOUS SELF-EMPLOYMENT
LEGALIZATION OF LABOR MIGRANTS

description: Автор рассматривает проблему легализации в России самозанятых российских и иностранных граждан, отмечает негативные факторы, связанные с их теневой деятельностью, обозначает распространенные виды деятельности, осуществляемые этими субъектами и анализирует последствия введения специального налогового режима. Предлагает механизм легализации самозанятых иностранных граждан, осуществляющих трудовую деятельность в Российской Федерации.
ГЛОБАЛЬНЫЙ ТРЕНД ПО СОЗДАНИЮ СПЕЦИАЛИЗИРОВАННЫХ МЕЖДУНАРОДНЫХ КОММЕРЧЕСКИХ СУДОВ: ОСОБЕННОСТИ РАЗРЕШЕНИЯ ВОПРОСА О КОМПЕТЕНЦИИ
Creators: name: КРУПКО СВЕТЛАНА ИГОРЕВНА
Publisher: name: Имущественные отношения в Российской Федерации
Year: 2020
Subjects: МЕЖДУНАРОДНЫЙ КОММЕРЧЕСКИЙ СУД
ТРАНСГРАНИЧНЫЙ КОММЕРЧЕСКИЙ СПОР
МЕЖДУНАРОДНАЯ ПОДСУДНОСТЬ
СОГЛАШЕНИЕ О ЯЗЫКЕ
НИДЕРЛАНДСКИЙ КОММЕРЧЕСКИЙ СУД
INTERNATIONAL COMMERCIAL COURT
CROSS- BORDER COMMERCIAL DISPUTE
INTERNATIONAL JURISDICTION
LANGUAGE AGREEMENT
NETHERLANDS COMMERCIAL COURT

description: На примере первого решения, вынесенного Нидерландским коммерческим судом 8 марта 2019 года по делу Elavon Financial Services DAC v. I.P.S. Holding B.V. and others с применением Специальных правил NCC, автор рассматривает специфику разрешения вопроса о компетенции при передаче спора в специализированный государственный международный коммерческий суд. Анализирует специальные предпосылки для передачи трансграничного коммерческого и гражданского спора в такой суд, квалифицирующие факторы, значимые для оценки международной составляющей спора, его коммерческого и гражданского характера, правовую природу нового процессуального инструмента - соглашения о языке. Приходит к выводу, что Нидерландский коммерческий суд может стать центром разрешения международных коммерческих споров в странах - членах Европейского союза.
КВАЛИФИКАЦИЯ КАДАСТРОВЫХ ОТНОШЕНИЙ В ПРЕДМЕТЕ ГРАЖДАНСКОГО ПРАВА
Creators: name: ЧЕТВЕРИКОВА КСЕНИЯ ВИКТОРОВНА
Publisher: name: Имущественные отношения в Российской Федерации
Year: 2020
Subjects: КАДАСТРОВЫЕ ОТНОШЕНИЯ В ПРЕДМЕТЕ ГРАЖДАНСКОГО ПРАВА
ОБЪЕКТЫ КАДАСТРОВЫХ ОТНОШЕНИЙ
ПРАВОВАЯ ПРИРОДА КАДАСТРОВЫХ ОТНОШЕНИЙ
ГРУППЫ КАДАСТРОВЫХ ОТНОШЕНИЙ
CADASTRAL RELATIONS IN THE SUBJECT OF CIVIL LAW
OBJECTS OF CADASTRAL RELATIONS
LEGAL NATURE OF CADASTRAL RELATIONS
GROUPS OF CADASTRAL RELATIONS

description: В статье рассматриваются ключевые вопросы определения предмета гражданского права с позиции отнесения к нему кадастровых отношений, поскольку в настоящее время в гражданско-правовой науке не сформулирована позиция по поводу существования таких отношений в предмете гражданского права. Автор анализирует дефиниции кадастровых отношений, предложенные другими специалистами, нормы Гражданского кодекса Российской Федерации, в которых, по его мнению, имеются признаки таких отношений, и формулирует собственную дефиницию кадастровых отношений.
Modeling ultrafast demagnetization and spin transport: the interplay of spin-polarized electrons and thermal magnons
Creators: name: Beens, Maarten
name: Duine, Rembert A.
name: Koopmans, Bert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically investigate laser-induced spin transport in metallic magnetic heterostructures using an effective spin transport description that treats itinerant electrons and thermal magnons on an equal footing. Electron-magnon scattering is included and taken as the driving force for ultrafast demagnetization. We assume that in the low-fluence limit the magnon system remains in a quasi-equilibrium, allowing a transient nonzero magnon chemical potential. In combination with the diffusive transport equations for the itinerant electrons, the description is used to chart the full spin dynamics within the heterostructure. In agreement with recent experiments, we find that in case the spin-current-receiving material includes an efficient spin dissipation channel, the interfacial spin current becomes directly proportional to the temporal derivative of the magnetization. Based on an analytical calculation, we discuss that other relations between the spin current and magnetization may arise in case the spin-current-receiving material displays inefficient spin-flip scattering. Finally, we discuss the role of (interfacial) magnon transport and show that, a priori, it cannot be neglected. However, its significance strongly depends on the system parameters.
Notes
Creators: name: C Andrews, Herbert
name: ANON, TBS
name: ANON, BST
name: ANON, BA
name: F Newton, Edgar
name: Emmison, G
name: Chambers, LH
name: Montague Smith, PW
Publisher: name: Archaeology Data Service
Year: 2025

description: Transactions of the East Hertfordshire Archaeological Society, 12.1, 44-54
Interplay of vitrification and ice formation in a cryoprotectant aqueous solution at low temperature
Creators: name: Alba-Simionesco, Christiane
name: Judeinstein, Patrick
name: Longeville, Stéphane
name: Osta, Oriana
name: Porcher, Florence
name: Caupin, Frédéric
name: Tarjus, Gilles
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The proneness of water to crystallize is a major obstacle to understanding its putative exotic behavior in the supercooled state. It also represents a strong practical limitation to cryopreservation of biological systems. Adding some concentration of glycerol, which has a cryoprotective effect preventing to some degree water crystallization, has been proposed as a possible way out, provided the concentration is small enough for water to retain some of its bulk character and/or for limiting the damage caused by glycerol on living organisms. Contrary to previous expectations, we show that in the ``marginal'' glycerol molar concentration $\approx18\%$, at which vitrification is possible with no crystallization on rapid cooling, water crystallizes upon isothermal annealing even below the calorimetric glass transition of the solution. Through a time-resolved polarized neutron scattering investigation, we extract key parameters, size and shape of the ice crystallites, fraction of water that crystallizes, crystallization time, which are important for cryoprotection, as a function of the annealing temperature. We also characterize the nature of the out-of-equilibrium liquid phases that are present at low temperature, providing more arguments against the presence of an iso-compositional liquid-liquid transition. Finally, we propose a rule-of-thumb to estimate the lower temperature limit below which water crystallization does not occur in aqueous solutions.
description: Main text (12 pages, 4 figures) and Supplementary Information (10 pages, 16 figures). Accepted in PNAS
Robust Devaney chaos in the two-dimensional border-collision normal form
Creators: name: Ghosh, Indranil
name: Simpson, David J. W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37G35, 39A28

description: The collection of all non-degenerate, continuous, two-piece, piecewise-linear maps on $\mathbb{R}^2$ can be reduced to a four-parameter family known as the two-dimensional border-collision normal form. We prove that throughout an open region of parameter space this family has an attractor satisfying Devaney's definition of chaos. This strengthens existing results on the robustness of chaos in piecewise-linear maps. We further show that the stable manifold of a saddle fixed point, despite being a one-dimensional object, densely fills an open region containing the attractor. Finally we identify a heteroclinic bifurcation, not described previously, at which the attractor undergoes a crisis and may be destroyed.
Synthesis and Evaluation of Polyfunctionally Substituted Heterocyclic Compounds Derived from 2-Cyano-N-(5-Pentadecyl-1,3,4-Thiadiazol-2-yl)Acetamide
Creators: name: El-Sayed, Refat
name: Shaldom, Amani
name: Mazrouee, Layla Al
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biotechnology
subject: Physiology
subject: FOS: Biological sciences
subject: Microbiology
subject: Physics
subject: Biochemistry
subject: Biological Sciences
subject: Sociology
subject: FOS: Sociology
subject: Chemistry
subject: Earth and Environmental Sciences

description: GRAPHICAL ABSTRACT
Spatial Power Spectral Analysis of the Suzaku X-ray Background
Creators: name: Zhou, Yu
name: Mitsuda, Kazuhisa
name: Yamasaki, Noriko Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: 85A04

description: Power spectra of spatial fluctuations of X-ray emission may impose constraints on the origins of the emission independent of that from the energy spectra. We generated spatial power spectrum densities (PSD) of blank X-ray skies observed with Suzaku X-ray observatory utilizing the modified $Δ$-variance method. Using the total measured count rate as the diagnostic tool, we found that a model consisting of the sum of two components, one for the unresolved faint point sources and one for the uniform flat-field emission, can well represent the observed PSD in three different energy bands (0.2-0.5 keV, 0.5-2 keV, and 2-10 keV); only an upper limit is obtained for the latter component in 2-10 keV. X-ray counting rates corresponding to the best-fit PSD model functions and diffuse emission fractions were estimated, and we confirmed that the sum of the counting rates of two model components is consistent with those actually observed with the detector for all energy bands. The ratio of the flat-field counting rate to the total in 0.5-2 keV, however, is significantly larger than the diffuse emission fraction estimated from the model fits of energy spectra. We discussed that this discrepancy can be reconciled by systematic effects in the PSD and energy spectrum analyses. The present study demonstrates that the spatial power spectrum is powerful in constraining the origins of the X-ray emission.
description: 12 pages, 4 figures, Accepted for publication in Astrophysical Journal
Big Data et Intelligence Artificielle : Leviers d'une Fiscalité Intelligente au Maroc
Creators: name: OUSAID Lahcen
name: FASLY Hakima
Publisher: name: Zenodo
Year: 2024

description: La fiscalité et le contrôle fiscal sont des piliers cruciaux de la régulation économique et de la collecte des recettes publiques. Cependant, ces processus sont souvent complexes et nécessitent des moyens efficaces pour leur bon fonctionnement. Cette étude se concentre sur l'exploration de l'utilisation du Big Data et de l'Intelligence Artificielle (IA) pour moderniser et optimiser le contrôle fiscal, instaurant ainsi une fiscalité intelligente au Maroc.

À travers des entretiens qualitatifs menés auprès de neuf cadres et responsables de la Direction Générale des Impôts, cette recherche met en lumière les avantages de l'automatisation fiscale. L'utilisation de techniques telles que le Big Data et l'Intelligence Artificielle simplifie les processus, automatise les tâches et améliore l'accès à l'information fiscale. De plus, ces technologies permettent la détection plus efficace des fraudes fiscales tout en préservant la confidentialité des données des contribuables. Cependant, l'adoption réussie de ces technologies requiert un engagement public fort, un cadre législatif et réglementaire approprié, ainsi que des garanties renforcées pour protéger les droits des contribuables.
Predestined Dark Matter Varieties in the Simplest Left-Right Model
Creators: name: Chowdhury, Talal Ahmed
name: Khalil, Shaaban
name: Ma, Ernest
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the simplest left-right extension of the Standard Model of particle interactions with one scalar bidoublet and one $SU(2)_R$ triplet for seesaw Majorana neutrino masses, the addition of a variety of fermion and scalar multiplets automatically makes them stable (predestined) dark matter candidates. We discuss the interplay of this dark ensemble in relic abundance and direct searches.
description: 12 pages, 5 figures
Some aspects of Skyrme--Chern-Simons densities
Creators: name: Tchrakian, D. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The gauge transformation properties of the Skyrme--Chern-Simons (SCS) densities is studied. Two types of SCS actions are identified, Type_{I} in which the gauge group is smaller than the largest possible one, and Type_{II} which are gauged with the largest allowed gauge group. Type_{I} SCS feature only one power of the gauge connection and no curvature, while Type_{II} feature both the gauge connection and the curvature. The Abelian Type_{I} SCS turn out to be explicitly gauge invariant while non-Abelian Type_{I} and all Type_{II} SCS are gauge invariant only up to a total divergence term, and hence lead to gauge covariant equations of motion. SCS actions are the gauged Skyrmion analogues of the usual Chern-Simons (CS) actions, except that unlike the CS which are defined only in odd dimensions, the SCS are defined also in even dimensions. Some areas of application in the construction of solitons are pointed out.
description: 21 pages. Published version. J. Phys. A: Math. Theor. 2022. Removed defective Appendix in the original version
X-ray characterisation of the massive galaxy clusterClG-J104803.7+313843 at z=0.76 with XMM-Newton
Creators: name: Bartalucci, I.
name: Gastaldello, F.
name: Piconcelli, E.
name: Zappacosta, L.
name: Rossetti, M.
name: Ghizzardi, S.
name: De Grandi, S.
name: Molendi, S.
name: Laurenti, Marco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the characterisation of the massive cluster ClG-J$104803.7+313843$ at $z=0.76$ performed using a serendipitous XMM-Newton observation. High redshift and massive objects represent an ideal laboratory to benchmark our understanding of how cluster form and assembly formation driven mainly by gravity.Leveraging the high throughput of XMM-Newton we were firstly able to determine the redshift of the object, shedding light on ambiguous photometric redshift associations. We investigated the morphology of this cluster which shows signs of merging activities in the outskirts and a flat core. We also measured the radial density profile up to $R_{500}$. With these quantities in hand, we were able to determine the mass, $M_{500}=5.64^{+0.79}_{-0.62} \times 10^{14}M_{\odot}$, using the YX proxy. This quantity improves previous measurement of the mass of this object by a factor of $\sim 3.5$. The characterisation of one cluster at such mass and redshift regime is fundamental as these objects are intrinsically rare, the number of objects discovered so far being less than $\sim 25$. Our study highlights the importance of using X-ray observations in combination with ancillary multi-wavelength data to improve our understanding of high-z and massive clusters
description: Submitted to A&A
A small-angle X-ray scattering study of nanoparticle assembly in an aligned nematic liquid crystal
Creators: name: Bartlett, Paul
name: Hallett, James E.
name: Hayward, Dominic W.
name: Richardson, Robert M.
Publisher: name: Taylor & Francis
Year: 2014
Subjects: subject: Immunology
subject: FOS: Clinical medicine
subject: Chemistry
subject: Biotechnology
subject: Cell Biology
subject: Microbiology
subject: FOS: Biological sciences
subject: Physics
subject: Engineering
subject: Biophysics

description: The assembly of colloidal particles in a nematic liquid crystal has been investigated using small-angle X-ray scattering. The structure and orientation of nanoparticle assemblies in bulk samples of aligned nematic liquid crystal have been determined. The method offers some advantages over optical microscopy, which is usually restricted to investigations of thin cells and micron-sized particles. The scattering from chains of particles has been calculated, and comparison with experimental results has shown that suspensions of 48 and 105 nm diameter silica nanoparticles formed highly ordered structures perpendicular to the liquid crystal director, consistent with quadrupolar defect-induced assembly.
Efficient prediction of grain boundary energies from atomistic simulations via sequential design
Creators: name: Kroll, Martin
name: Schmalofski, Timo
name: Dette, Holger
name: Janisch, Rebecca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Methodology (stat.ME)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Data based materials science is the new promise to accelerate materials design. Especially in computational materials science, data generation can easily be automatized. Usually, the focus is on processing and evaluating the data to derive rules or to discover new materials, while less attention is being paid on the strategy to generate the data. In this work, we show that by a sequential design of experiment scheme, the process of generating and learning from the data can be combined to discover the relevant sections of the parameter space. Our example is the energy of grain boundaries as a function of their geometric degrees of freedom, calculated via atomistic simulations. The sampling of this grain boundary energy space, or even subspaces of it, represents a challenge due to the presence of deep cusps of the energy, which are located at irregular intervals of the geometric parameters. Existing approaches to sample grain boundary energy subspaces therefore either need a huge amount of datapoints or a~priori knowledge of the positions of these cusps. We combine statistical methods with atomistic simulations and a sequential sampling technique and compare this strategy to a regular sampling technique. We thereby demonstrate that this sequential design is able to sample a subspace with a minimal amount of points while finding unknown cusps automatically.
Waveforms and fluxes: Towards a self-consistent effective one body waveform model for nonprecessing, coalescing black-hole binaries for third generation detectors
Creators: name: Albertini, Angelica
name: Nagar, Alessandro
name: Rettegno, Piero
name: Albanesi, Simone
name: Gamba, Rossella
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a comprehensive comparison between numerical relativity (NR) angular momentum fluxes at infinity and the corresponding quantity entering the radiation reaction in TEOBResumS, an Effective-One-Body (EOB) waveform model for nonprecessing coalescing black hole binaries on quasi-circular orbits. This comparison prompted us to implement two changes in the model: (i) including Next-to-Quasi-Circular corrections in the $\ell=m$, $\ell\leq 5$ multipoles entering the radiation reaction and (ii) consequently updating the NR-informed spin-orbital sector of the model. This yields a new waveform model that presents a higher self-consistency between waveform and dynamics and an improved agreement with NR simulations. We test the model computing the EOB/NR unfaithfulness $\bar{F}_{\rm EOB/NR}$ over all 534 spin-aligned configurations available through the Simulating eXtreme Spacetime catalog, notably using the noise spectral density of Advanced LIGO, Einstein Telescope and Cosmic Explorer, for total mass up to $500M_\odot$. We find that the maximum unfaithfulness $\bar{F}^{\rm max}_{\rm EOB/NR}$ is mostly between $10^{-4}$ and $10^{-3}$, and the performance progressively worsens up to $\sim 5\times 10^{-3}$ as the effective spin of the system is increased. We perform similar analyses on the \SEOB{} model, that delivers $\bar{F}^{\rm max}_{\rm EOB/NR}$ values uniformly distributed versus effective spin and mostly between $10^{-3}$ and $10^{-2}$. We conclude that the improved TEOBResumS model already represents a reliable and robust first step towards the development of highly accurate waveform templates for third generation detectors.
description: 23 pages, 23 figures, submitted to Phys. Rev. D
Parametrically driven THz magnon-pairs: predictions towards ultimately fast and minimally dissipative switching
Creators: name: Fabiani, G.
name: Mentink, J. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Findings ways to achieve switching between magnetic states at the fastest possible time scale that simultaneously dissipates the least amount of energy is one of the main challenges in magnetism. Antiferromagnets exhibit intrinsic dynamics in the THz regime, the highest among all magnets and are therefore ideal candidates to address this energy-time dilemma. Here we study theoretically THz-driven parametric excitation of antiferromagnetic magnon-pairs at the edge of the Brillouin zone and explore the potential for switching between two stable oscillation states. Using a semi-classical theory, we predict that switching can occur at the femtosecond time scale with an energy dissipation down to a few zepto Joule. This result touches the thermodynamical bound of the Landauer principle, and approaches the quantum speed limit up to 5 orders of magnitude closer than demonstrated with magnetic systems so far.
description: 8 pages, 4 figures
Consensus in the Hegselmann-Krause model
Creators: name: Lanchier, Nicolas
name: Li, Hsin-Lun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35

description: This paper is concerned with the probability of consensus in a multivariate, spatially explicit version of the Hegselmann-Krause model for the dynamics of opinions. Individuals are located on the vertices of a finite connected graph representing a social network, and are characterized by their opinion, with the set of opinions $Δ$ being a general bounded convex subset of a finite dimensional normed vector space. Having a confidence threshold $τ$, two individuals are said to be compatible if the distance (induced by the norm) between their opinions does not exceed the threshold $τ$. Each vertex $x$ updates its opinion at rate the number of its compatible neighbors on the social network, which results in the opinion at $x$ to be replaced by a convex combination of the opinion at $x$ and the nearby opinions: $α$ times the opinion at $x$ plus $(1 - α)$ times the average opinion of its compatible neighbors. The main objective is to derive a lower bound for the probability of consensus when the opinions are initially independent and identically distributed with values in the opinion set $Δ$.
description: 13 pages, 1 figure
Early ovariectomy reveals the non-somatic origin of murine anti-A-reactive IgM reflecting developmental malignancy.
Creators: name: Arend, Peter
Publisher: name: figshare
Year: 2016
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Hematology
subject: Medicine
subject: Biochemistry
subject: Developmental Biology
subject: Zoology
subject: 60114 Systems Biology
subject: Structural Biology
subject: Stem Cells
subject: Cell Biology
subject: Genetics

description: The germline encoding of a non-immune immunoglobulin M (IgM) molecule in mammals was experimentally documented for the first time as a result of the specifically timed ovariectomy of C57BL/10 mice. The target of this innate antibody involves a trans-species developmental antigen that signifies malignancy when expressed in any non-developmental tissue. Although ovariectomy and castration result in uncontrolled and/or enhanced humoral and cellular immunity involving increased weights of the spleen and thymus with pronounced B and T cell production, the development of mercaptoethanol-sensitive, complement-binding, non-immune anti-A reactivity in murine plasma was not enhanced after an ovariectomy that was performed in C57BL/10 mice prior to the onset of puberty. This non-immune murine anti-A, which is complementary to the trans-species, syngeneic ovarian GalNAc-glycan-bearing glycolipids and distinct from the cross-reactive adaptive anti-A antibody, was strongly downregulated or did not appear in plasma of animals ovariectomized at the age of 20 days. Thus, contrary to our previous view, this reactivity is unlikely to originate from a somatic, primary immune or autoimmune response. All of the murine tissues expressed the species-specific Forssman reactivity, and further A-like structures were identified in the male and female reproductive and endodermal organs by reaction with innate human anti-A antibody, while the murine anti-A was exclusively inhibited by syngeneic ovarian glycolipids. Moreover, the early ovarian tissue, which represents a last evolutionary and/or developmental location, showed a developmental polymorphism characterized by reactivity to the lectin from Dolichos biflorus and the agglutinin from Helix pomatia indicating the functional involvement of the O-GalNAc-determined mucin-type A-like, Thomsen-Friedenreich (TF) epitope that signifies malignancy when accumulated and expressed in non-developmental tissues.
Lifshitz transition enhanced triplet $p_z$-wave superconductivity in hydrogen doped KCr$_3$As$_3$
Creators: name: Zhang, Ming
name: Hao, Juan-Juan
name: Wu, Xianxin
name: Yang, Fan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The recently synthesized air-insensitive hydrogen doped KCr$_3$As$_3$ superconductor has aroused great research interests. This material has, for the first time in the research area of the quasi-one-dimensional Cr-based superconductivity (SC), realized a tunability through charge doping, which will potentially significantly push the development of this area. Here based on the band structure from first-principle calculations, we construct a six-band tight-binding (TB) model equipped with multi-orbital Hubbard interactions, and adopt the random-phase-approximation approach to study the hydrogen-doping dependence of the pairing symmetry and superconducting $T_c$. Under the rigid-band approximation, our pairing phase diagram is occupied by the triplet $p_z$-wave pairing through out the hydrogen-doping regime $x\in (0.4,1)$ in which SC has been experimentally detected. Remarkably, the $x$-dependence of $T_c$ shows a peak at the 3D-quasi-1D Lifshitz transition point, although the total density of state exhibit a dip there. A thorough investigation of the band structure reveals type-II van-Hove singularities (VHSs) in the $γ$ band, which favor the formation of the triplet SC. It turns out that the $γ$- Fermi surface (FS) comprises two flat quasi-1D FS sheets almost parallel to the $k_z=0$ plane and six almost perpendicular tube-like FS sheets, and the type-II VHS just lies in the boundary between these two FS parts. Furthermore, the $\left|k_z\right|$ of the VH planes reaches the maximum near the Lifshitz-transition point, which pushes the $T_c$ of the $p_z$-wave SC to the maximum. Our results appeal more experimental access into this intriguing superconductor.
description: 11 pages, 6 figures, accepted version by Phys. Rev. B
Long-range influence of a pump on a critical fluid
Creators: name: Dor, Ydan Ben
name: Kafri, Yariv
name: Mukamel, David
name: Turner, Ari M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A pump coupled to a conserved density generates long-range modulations, resulting from the non-equilibrium nature of the dynamics. We study how these modulations are modified at the critical point where the system exhibits intrinsic long-range correlations. To do so, we consider a pump in a diffusive fluid, which is known to generate a density profile in the form of an electric dipole potential and a current in the form of a dipolar field above the critical point. We demonstrate that while the current retains its form at the critical point, the density profile changes drastically. At criticality, in $d<4$ dimensions, the deviation of the density from the average is given by ${\rm sgn}(\cos(θ))|\cos(θ)/r^{(d-1)}|^{1/δ}$ at large distance $r$ from the pump and angle $θ$ with respect to the pump's orientation. At short distances, there is a crossover to a $\cos(θ)/r^{d-3+η}$ profile. Here $δ$ and $η$ are Ising critical exponents. The effect of the local pump on the domain wall structure below the critical point is also considered.
description: 5 pages, 1 figure
Effects of Intravenous Benzo[a]Pyrene Dose Administration on Levels of Exposure Biomarkers, DNA Adducts, and Gene Expression in Rats
Creators: name: Ayotte, Pierre
name: Bouchard, Michèle
name: Moreau, Marjory
name: Ouellet, Nathalie
Publisher: name: Taylor & Francis
Year: 2014
Subjects: subject: 60506 Virology
subject: FOS: Biological sciences
subject: Cancer
subject: Biological Sciences
subject: Chemistry
subject: Pharmacology
subject: Physiology
subject: Molecular Biology
subject: Genetics
subject: Cell Biology
subject: Microbiology
subject: Medicine
subject: Biochemistry
subject: Biophysics

description: The effects of benzo[a]pyrene (BaP) administration on biomarkers of exposure and early effects were studied in male Sprague-Dawley rats intravenously injected with doses of 0.4, 4, 10, or 40 μmol BaP/kg . Blood, tissues, and excreta were collected 8 and 24 h posttreatment. BaP and several of its metabolites were simultaneously measured in blood, tissues and excreta by ultra-high-performance liquid chromatography (UHPLC)/fluorescence. DNA adducts of BaP diol epoxide (BaPDE) in lungs were quantified using an ultrasensitive immunoassay with chemiluminescence detection. Expression of selected genes in lungs of treated rats (lung RNA) compared to control rats was also assessed by quantitative real-time polymerase chain reaction. There was a dose-dependent increase in blood, tissue, and excreted levels of BaP metabolites. At 8 and 24 h postinjection, BaP and hydroxyBaP were found in higher concentrations in blood and tissues compared to other analytes. However, diolBaP were excreted in greater amounts in urine and apparently more rapidly than hydroxyBaP. Mean percentages (± SD) of injected dose excreted in urine as 4,5-diolBaP during the 0–8 h and 0–24 h period posttreatment were 0.16 ± 0.027% and 0.14 ± 0.083%, respectively. Corresponding values for 3-OHBaP were 0.0045 ± 0.0009% and 0.026 ± 0.014%. BaP-diones were not detectable in blood, tissues, and excreta; 7,8-diolBaP and BaPtetrol were found to be minor metabolites. There was also a dose-dependent increase in DNA adduct formation in lung. Analysis of gene expression further showed a modulation of Cyp1a1, Cyp1b1, Nqo1, Nrf2, Fos, and Ahr expression at 10- and 40-μmol/kg doses, but not at the lower doses. This study provided a better assessment of the influence of absorbed BaP doses on biological levels of diolBaP and OHBaP exposure biomarkers and association of the latter with early biological alterations, such as DNA adducts and gene expression.
CESSDA SaW D1.2: 1st Period Delivery Report
Creators: name: Ilijasic Versic, Ivana
name: Milon, Jean-Baptiste
name: Kvalheim, Vigdis
name: Wittenberg, Marion
name: Krejci, Jindrich
Publisher: name: Zenodo
Year: 2016
Subjects: Project Management

description: The 1st Periodic Delivery Report informs about the achievement of milestones and other outputs produced in the CESSDA SAW project in the first 8 months of its duration. Each work package in the project produced a definitive statement of outputs reached by the end of the first reporting period. It also serves as the first documentation of the activity progress and collaboration between different beneficiaries and Linked Third Parties in this project. It defines the current status of the SaW work plan and gives overview of the future planned activities over the course of the project.
Microscopic analysis of induced nuclear fission dynamics
Creators: name: Ren, Z. X.
name: Zhao, J.
name: Vretenar, D.
name: Niksic, T.
name: Zhao, P. W.
name: Meng, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The dynamics of low-energy induced fission is explored using a consistent microscopic framework that combines the time-dependent generator coordinate method (TDGCM) and time-dependent nuclear density functional theory (TDDFT). While the former presents a fully quantum mechanical approach that describes the entire fission process as an adiabatic evolution of collective degrees of freedom, the latter models the dissipative dynamics of the final stage of fission by propagating the nucleons independently toward scission and beyond. By combining the two methods, based on the same nuclear energy density functional and pairing interaction, we perform an illustrative calculation of the charge distribution of yields and total kinetic energy for induced fission of $^{240}$Pu. For the saddle-to-scission phase a set of initial points for the TDDFT evolution is selected along an iso-energy curve beyond the outer fission barrier on the deformation energy surface, and the TDGCM is used to calculate the probability that the collective wave function reaches these points at different times. Fission observables are computed with both methods and compared with available data. The relative merits of including quantum fluctuations (TDGCM) and the one-body dissipation mechanism (TDDFT) are discussed.
description: 7 pages,6 figures
Four-quark states with charm quarks in a two-body Bethe-Salpeter approach
Creators: name: Santowsky, Nico
name: Fischer, Christian S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the internal structure of a range of four-quark states with charm quark contributions using a two-body Bethe-Salpeter equation. Thereby, we examine charmonium-like states with hidden charm and quark content $c\bar{c}q\bar{q}$, open-charm states with quark content $cc\bar{q}\bar{q}$ and all-charm states with $cc\bar{c}\bar{c}$. In particular we study the internal competition between meson-meson components and diquark-antidiquark components in the wave functions of these states. Our results indicate that the $χ_{c1}(3872)$ and the $Z_c(3900)$ are predominantly $D\bar D^*$ states and that the recently discovered open-charm state $T_{cc}^+$ is dominated by an internal $DD^*$ component. In both cases the diquark components are negligible. For the all-charm state $X(6900)$ with as yet unknown quantum numbers we identify candidates in the excitation spectra of $0^+$ and $1^+$ states. Furthermore, our framework serves to provide predictions for further, yet undiscovered open and hidden charm four-quark states.
description: 9 pages, 4 figures; v2: minor changes, version accepted for EPJC
THE IMPACT OF LAW OF ADMINISTRATIVE MISCONDUCT IN THE THIRD SECTOR: CONTROL FACILITY FOR FUNDAMENTAL RIGHTS GUARANTEED – Part 1
Creators: name: Bertoncini, Mateus Eduardo Siqueira
name: EDINALDO DOS SANTOS COELHO
Publisher: name: figshare
Year: 2014
Subjects: subject: Law
subject: FOS: Law

description: This work aims at identifying the incidence of Administrative Improbity Act to ThirdSector, as well as the manner in which it should occur. Will take into account the importance of this segment in the enforcement of fundamental rights and also the
increasing number of denunciations involving its members and malpractice of public resources. For this, will take place initially a study of the Third-Sector, in order to understand its emergence, their area and form of expertise and relationship with the
state and subsequently will be analyzed the Administrative Improbity Act.