cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ALIENAÇÃO PARENTAL: ASPECTOS JURÍDICOS E PSICOSSOCIAIS
Creators: name: Katyane Tabosa Mendes da Silva
name: José Marcos de Lira Oliveira Filho
name: Isadora Dar'c Davi de Souza
name: Ana Cristina Souza e Silva
name: José Vital Alves Cabral
name: Antônio Azoubel Antunes
name: Emanuel Sávio de Souza Andrade
name: Arnaldo de França Caldas Junior
Publisher: name: Zenodo
Year: 2023

description: RESUMO

A chamada Síndrome de Alienação Parental (SAP) define a alienação parental como um “treinamento” aplicado por um dos genitores para que a criança ou adolescente odeie o outro genitor, rompendo laços afetivos, além de ocasionar sentimentos de ansiedade e temor. A Alienação Parental (AP) é um fenômeno com prevalência significativa na população mundial e tem sido associada à deterioração da saúde mental das pessoas que a vivenciam ou já vivenciaram. Objetivo: Descrever como o Poder Judiciário e o trabalho psicossocial podem ofertar às crianças e adolescentes, vítimas de alienação parental, uma melhor qualidade de vida. Método: Trata-se de uma revisão integrativa com buscas coletadas através de dados bibliográficos, com aspectos que tratam sobre alienação parental no âmbito jurídico e psicossocial. A busca dos artigos foi realizada em 2023. Como base de dados, utilizamos a Biblioteca Virtual de Saúde (BVS), nos quais localizamos artigos da Scielo, Lilacs, Medline (PubMed), e Descritores em Ciências da Saúde (DeCS). Utilizamos sites Federativos como complemento de busca dos artigos não localizados nos sites inclusos. Como descritores, localizamos: Poder Judiciário. Alienação Social. Consentimento do Responsável. Direitos da Criança e do Adolescente. Funcionamento Psicossocial. Como critérios inclusão, foram realizadas buscas de artigos publicados entre os anos de 2017 a 2023, que condiziam com a temática abordada. Como critérios de exclusão, estudos avaliaram violações de direito à criança e ao adolescente, dentro do contexto jurídico e psicossocial, porém estavam fora da alienação parental. Resultados: Através das buscas realizadas nas bases de dados, registramos 380 artigos, dentre esses, 95 foram selecionados para uma leitura completa. Após a leitura completa dos 95 artigos, 18 foram mantidos na revisão; pois apresentaram os critérios previamente definidos sobre a temática de alienação parental dentro dos aspectos jurídicos e psicossociais. Constatamos ainda que, na maioria dos estudos ocorre a prevalência do abuso psicológico. A presença de pais alienadores só piora a situação e a fragilidade dos menores e incapazes de responderem por si só.

 

Palavras-chave: Poder Judiciário. Alienação Social. Consentimento do Responsável. Direitos da Criança e do Adolescente. Funcionamento Psicossocial.
Integrated optimization of heterogeneous-network management and the elusive role of macrocells
Creators: name: Guedes, Raphael M.
name: de Rezende, José F.
name: Barbosa, Valmir C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: We consider heterogeneous wireless networks in the physical interference model and introduce a new formulation of the mixed-integer nonlinear programming problem that addresses base-station activation and many-to-many associations while minimizing power consumption. We also introduce HetNetGA, a genetic algorithm that can tackle the problem without any approximations. Though unsuitable for practical deployment, HetNetGA enables the investigation of such networks' true possibilities. Results for scenarios involving both macrocells and picocells often align with what is expected, but sometimes are unexpected and essentially point to the need to better understand the role of macrocells in helping provide capacity while remaining energetically advantageous.
description: This version updates metadata
The Influence of Diaspora Politics on Conflict and Peace: Transnational Activism of Stateless Kurds
Creators: name: Tas, Latif
Publisher: name: Zenodo
Year: 2017
Subjects: Transnationalism
Turkey
Ethnic conflict
Kurdish diaspora
Middle East

description: Kurds are the largest stateless ethnic group in the world, and Kurdish diasporas have for many years tried to raise awareness of the Kurds’ situation, both at home and abroad, as well as lobbying for improvements to Kurdish cultural and political rights. Many researchers believe that the diaspora is a safe environment within which “long-distance nationalists” are created and organised. This chapter explores the potential role of Kurdish diaspora groups in ‘peace-making’ and ‘peace-building’ processes within Turkey. The underlying concern is how successful negotiations for peace and post-conflict can be reached with the help of different stakeholders, such as the diaspora. Diaspora communities are not only idealistic protesters but can also act as positive agents for the homeland and create practical solutions for stateless communities.
A mathematical model of the nickel converter
Creators: name: Kyllo, Andrew Kevin
Publisher: name: University of British Columbia
Year: 2010

description: A mathematical model of the nickel converter has been developed based on the assumption that the converting reactions pass through a finite series of equilibrium steps. The model predicts the bath temperature and the composition of the three phases present. Detailed data collected during in-plant trials are used to test the validity of the model predictions. The model is found to give relatively accurate predictions for the first blows of a converting charge, but overpredicts both temperature and iron removal during the last blows. The errors in the last blows are expected to be caused by the converting reactions coming under liquid phase mass transport control. An analysis of some of the more important variables in a converter operation indicates that, according to the assumption of equilibrium, there is very little that can be done to chemically improve the converting process.
Maltsiniotis's first conjecture for K_1
Creators: name: Muro, Fernando
Publisher: name: arXiv
Year: 2007
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 18E10; 18E30; 18F25; 19B99; 55S45

description: We show that K_1 of an exact category agrees with K_1 of the associated triangulated derivator. More generally we show that K_1 of a Waldhausen category with cylinders and a saturated class of weak equivalences coincides with K_1 of the associated right pointed derivator.
description: 23 pages, the main results have been generalized
Δυναμική σολιτονικών λύσεων μη-γραμμικών εξισώσεων τύπου Schrodinger
Creators: name: Μυλωνάς, Ιωάννης Κ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Σολιτόνια
Ευσταθεια
Μη- γραμμικα συστηματα
Εξισώσεις κίνησης
Soliton
Stability
Nonlinear
Evolution Equations

description: Το θέμα της παρούσας διατριβής είναι η μελέτη διαφορετικών τύπων μη γραμμικών εξισώσεων τύπου Schrodinger (NLS), όπως η Gross-Pitaevskii και η τροποποιημένη NLS με την παρούσα ισχνής μη τοπικότητας. Η μελέτη μας βασίζεται σε αναλυτικές μεθόδους. Πρώτον, αναπτύξαμε μια άμεση θεωρία διαταραχών για σκοτεινά-φωτεινά σολιτόνια και εξάγαμε τις εξισώσεις εξέλιξης για τις παραμέτρους του σολιτονίου. Στη συνέχεια εφαρμόσαμε τα αποτελέσματά μας σε μια σειρά από παραδείγματα περιπτώσεων που υπόκεινται στα συμπυκνώματα Μποζε-Αινστάιν. Δεύτερον, χρησιμοποιώντας αναλυτικές μεθόδους μελετήσαμε την ευστάθεια της μονοδιάστατης τροποποιημένης μη γραμμικής εξισώσεις του Σροντινγκερ με την προσθήκη ενός ημιτονοειδούς δυναμικού μαζί με την παρουσία ισχνής μη τοπικότητας.
description: The topic of these thesis is the study of different types of the Nonlinear Schrodinger Equation(NLS), like Gross-Pitaevskii and modified NLS with the present of weak nonlocality. Our study are based to analytical methods. First we develop a direct perturbation theory for dark-bright solitons and derive evolution equations for the soliton parameters. Then we applied our results to a number of case examples motivated by the physics of atomic Bose-Einstein condensates. Second using analytical methods we study the stability and internal modes of one-dimensional gap solitons employing the modified NLS with a sinusoidal potential together with the presence of a weak nonlocality.
Generalized Smirnov statistics and the distribution of prime factors
Creators: name: Ford, Kevin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: Primary 11N25; Secondary 62G30

description: We apply recent bounds of the author (math.PR/0609224) for generalized Smirnov statistics to the distribution of integers whose prime factors satisfy certain systems of inequalities.
description: 10 pages. Minor corrections; increase in the range of variables in the theorems and corollary. To appear in Functiones et Approximatio Commentarii Mathematici
Models of Opinion Formation: Influence of Opinion Leaders
Creators: name: Boccara, Nino
Publisher: name: arXiv
Year: 2007
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: This paper studies the evolution of the distribution of opinions in a population of individuals in which there exist two distinct subgroups of highly-committed, well-connected opinion leaders endowed with a strong convincing power. Each individual, located at a vertex of a directed graph, is characterized by her name, the list of people she is interacting with, her level of awareness, and her opinion. Various temporal evolutions according to different local rules are compared in order to find under which conditions the formation of strongly polarized subgroups, each adopting the opinion of one of the two groups of opinion leaders, is favored.
description: 20 pages, 9 figures
Robustness of chiral edge modes in fractal-like-lattices below two dimensions: A case study
Creators: name: Fischer, Sonja
name: van Hooft, Michal
name: van der Meijden, Twan
name: Smith, Cristiane Morais
name: Fritz, Lars
name: Fremling, Mikael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: One of the most prominent characteristics of two-dimensional Quantum Hall systems are chiral edge modes. Their existence is a consequence of the bulk-boundary correspondence and their stability guarantees the quantization of the transverse conductance. In this work, we study two microscopic models, the Hofstadter lattice model and an extended version of Haldane's Chern insulator. Both models host Quantum Hall phases in two dimensions. We transfer them to lattice implementations of fractals with a dimension between one and two and study the existence and robustness of their edge states. Our main observation is that, contrary to their two-dimensional counterpart, there is no universal behavior of the edge modes in fractals. Instead, their presence and stability critically depends on details of the models and the lattice realization of the fractal.
description: v1: 18 pages, 30 figures, v2: 20 pages, 30 figures, accepted version, modified title
Polynomial-time algorithm for simulation of weakly interacting quantum spin systems
Creators: name: Bravyi, Sergey
name: DiVincenzo, David
name: Loss, Daniel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We describe an algorithm that computes the ground state energy and correlation functions for 2-local Hamiltonians in which interactions between qubits are weak compared to single-qubit terms. The running time of the algorithm is polynomial in the number of qubits and the required precision. Specifically, we consider Hamiltonians of the form $H=H_0+εV$, where H_0 describes non-interacting qubits, V is a perturbation that involves arbitrary two-qubit interactions on a graph of bounded degree, and $ε$ is a small parameter. The algorithm works if $|ε|$ is below a certain threshold value that depends only upon the spectral gap of H_0, the maximal degree of the graph, and the maximal norm of the two-qubit interactions. The main technical ingredient of the algorithm is a generalized Kirkwood-Thomas ansatz for the ground state. The parameters of the ansatz are computed using perturbative expansions in powers of $ε$. Our algorithm is closely related to the coupled cluster method used in quantum chemistry.
description: 27 pages
A Large Starphene Comprising Pentacene Branches
Creators: name: Holec, Jan
name: Cogliati, Beatrice
name: Lawrence, James
name: Berdonces-layunta, Alejandro
name: Herrero, Pablo
name: Nagata, Yuuya
name: Banasiewicz, Marzena
name: Kozankiewicz, Boleslaw
name: Corso, Martina
name: Oteyza, Dimas
name: Jancarik, Andrej
name: Gourdon, André
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Starphenes are attractive compounds due to their characteristic physicochemical properties that are inherited from acenes, making them interesting compounds for organic electronics and optics. However, the instability and low solubility of larger starphene homologs make their synthesis extremely challenging. Herein, we present a new strategy leading to pristine [16]starphene in preparative scale. Our approach is based on a synthesis of a carbonyl-protected starphene precursor that is thermally converted in a solid-state form to the neat [16]starphene, which is then characterised with a variety of analytical methods, such as 13C CP-MAS NMR, TGA, MS MALDI, UV-Vis and FTIR spectroscopy. Furthermore, high-resolution STM experiments unambiguously confirm its expected structure and reveal a moderate electronic delocalisation between the pentacene arms. Nucleus-independent chemical shifts NICS(1) are also calculated to survey its aromatic character.
description: Angewandte Chemie International Edition, Wiley-VCH Verlag, 2021
Conservation-law-based global bounds to quantum optimal control
Creators: name: Zhang, Hanwen
name: Kuang, Zeyu
name: Puri, Shruti
name: Miller, Owen D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Active control of quantum systems enables diverse applications ranging from quantum computation to manipulation of molecular processes. Maximum speeds and related bounds have been identified from uncertainty principles and related inequalities, but such bounds utilize only coarse system information, and loosen significantly in the presence of constraints and complex interaction dynamics. We show that an integral-equation-based formulation of conservation laws in quantum dynamics leads to a systematic framework for identifying fundamental limits to any quantum control scenario. We demonstrate the utility of our bounds in three scenarios -- three-level driving, decoherence suppression, and maximum-fidelity gate implementations -- and show that in each case our bounds are tight or nearly so. Global bounds complement local-optimization-based designs, illuminating performance levels that may be possible as well as those that cannot be surpassed.
description: 5 pages, 3 figures, plus 12-page Supplementary Materials
A variable corona for GRS 1915+105
Creators: name: Karpouzas, Konstantinos
name: Méndez, Mariano
name: García, Federico
name: Zhang, Liang
name: Altamirano, Diego
name: Belloni, Tomaso
name: Zhang, Yuexin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Most models of the low frequency quasi periodic oscillations (QPOs) in low-mass X-ray binaries (LMXBs) explain the dynamical properties of those QPOs. On the other hand, in recent years reverberation models that assume a lamp-post geometry have been successfull in explaining the energy-dependent time lags of the broad-band noise component in stellar mass black-holes and active galactic nuclei. We have recently shown that Comptonisation can explain the spectral-timing properties of the kilo-hertz (kHz) QPOs observed in neutron star (NS) LMXBs. It is therefore worth exploring whether the same family of models would be as successful in explaining the low-frequency QPOs. In this work, we use a Comptonisation model to study the frequency dependence of the phase lags of the type-C QPO in the BH LMXB GRS 1915+105. The phase lags of the QPO in GRS 1915+105 make a transition from hard to soft at a QPO frequency of around 1.8 Hz. Our model shows that at high QPO frequencies a large corona of ~ 100-150 R_g covers most of the accretion disc and makes it 100% feedback dominated, thus producing soft lags. As the observed QPO frequency decreases, the corona gradually shrinks down to around 3-17 R_g, and at 1.8 Hz feedback onto the disc becomes inefficient leading to hard lags. We discuss how changes in the accretion geometry affect the timing properties of the type-C QPO.
description: 13 pages, 7 figures
Higher order curvature corrections to the field emission current density
Creators: name: Biswas, Debabrata
name: Ramachandran, Rajasree
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Accelerator Physics (physics.acc-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A simple expression for the Gamow factor is obtained using a second order curvature corrected tunneling potential. Our results show that it approximates accurately the `exact-WKB' transmission coefficient obtained by numerically integrating over the tunneling region to obtain the Gamow factor. The average difference in current density using the respective transmission coefficients is about $1.5 \%$, across a range of work-functions $ϕ\in [3-5.5]$eV, Fermi energy ${\cal{E}}_F$ in [5-10]eV, local electric fields $E_l$ in[3-9]eV and radius of curvature $R \geq 5$nm). An easy-to-use correction factor $λ_P$ is also provided to approximately map the `exact-WKB' current density to the `exact' current density in terms of ${\cal{E}}_F/ϕ$. The average error on using $λ_P$ is found to be around $3.5\%$. This is a vast improvement over the average error of $15\%$ when $λ_P = 1$. Finally, an analytical expression for the curvature-corrected current density is obtained using the Gamow factor. It is found to compare well with the `exact-WKB' current density even at small values of local electric field and radius of curvature.
description: 8 pages
Common envelope evolution of eccentric binaries
Creators: name: Glanz, Hila
name: Perets, Hagai B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Common envelope evolution (CEE) is believed to be an important stage in the evolution of binary/multiple stellar systems. Following this stage, the CE is thought to be ejected, leaving behind a compact binary (or a merger product). Although extensively studied, the CEE process is still little understood, and although most binaries have non-negligible eccentricity, the effect of initial eccentricity on the CEE has been little explored. Moreover, most studies assume a complete circularization of the orbit by the CE onset, while observationally such eccentricities are detected in many post-CE binaries. Here we use smoothed particle hydro-dynamical simulations (SPH) to study the evolution of initially eccentric ($0\le e\le0.95$) CE-systems. We find that initially eccentric binaries only partially circularize. In addition, higher initial eccentricity leads to a higher eccentricity following the end of the inspiral phase, with eccentricities as high as 0.18 in the most eccentric cases, and even higher if the initial peri-center of the orbit is located inside the star (e.g. following a kick into an eccentric orbit, rather than a smooth transition). CEE of more eccentric binaries leads to enhanced dynamical mass-loss of the CE compared with more circular binaries, and depends on the initial closest approach of the binary. We show that our results and the observed eccentricities of post-CE binaries suggest that the typical assumptions of circular orbits following CEE might potentially be revised. We expect post-CE eccentricities to affect the delay time distributions of various transients such as supernovae, gamma-ray bursts and gravitational-wave sources by up to tens of percents.
description: Accepted to MNRAS
The Puzzling Origin of Massive Compact Galaxies in MaNGA
Creators: name: Schnorr-Müller, A.
name: Trevisan, M.
name: Riffel, R.
name: Chies-Santos, A. L.
name: Furlanetto, C.
name: Ricci, T. V.
name: Lohmann, F. S.
name: Flores-Freitas, R.
name: Mallmann, N. D.
name: Alamo-Martínez, K. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We characterized the kinematics, morphology, and stellar population (SP) properties of a sample of massive compact quiescent galaxies (MCGs, $10 \lesssim \log M_\star$/$M_\odot \lesssim 11$ and $r_{\rm e} \sim 1-3 $kpc) in the MaNGA Survey, with the goal of constraining their formation, assembly history and assessing their relation with non-compact quiescent galaxies. We compared their properties with those of a control sample of median-sized quiescent galaxies ($r_{\rm e} \sim 4-8 $kpc) with similar effective velocity dispersions. MCGs have elevated rotational support, as evidenced by a strong anti-correlation between the Gauss-Hermite moment $h_3$ and $V/σ$. In contrast, 30$\%$ of control sample galaxies (CSGs) are slow rotators, and fast-rotating CSGs generally show a weak $h_3-V/σ$ anti-correlation. MCGs and CSGs have similar ages, but MCGs are more metal-rich and $α$-enhanced. Both MCGs and CSGs have shallow negative metallicity gradients and flat [$α$/Fe] gradients. On average, MCGs and CSGs have flat age gradients, but CSGs have a significantly larger dispersion of gradient values. The kinematics and SP properties of MCGs suggest that they experienced highly-dissipative gas-rich events, such as mergers, followed by an intense, short, and centrally concentrated burst of star formation, between 4 to 10 Gyr ago ($z\sim0.4-2$), and had a quiet accretion history since then. This sequence of events might be analogous to, although less extreme than, the compaction events which formed compact quiescent galaxies at $z \sim 2$. The small sizes of MCGs, and the high efficiency and short duration of their last star formation episode suggest that they are descendants of compact post-starburst galaxies.
description: 19 pages, 18 figures (not including appendices). Accepted for publication in the Monthly Notices of the Royal Astronomical Society
Survival times of supramassive neutron stars resulting from binary neutron star mergers
Creators: name: Beniamini, Paz
name: Lu, Wenbin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A binary neutron star (BNS) merger can lead to various outcomes, from indefinitely stable neutron stars, through supramassive (SMNS) or hypermassive (HMNS) neutron stars supported only temporarily against gravity, to black holes formed promptly after the merger. Up-to-date constraints on the BNS total mass and the neutron star equation of state suggest that a long-lived SMNS may form in $\sim 0.45-0.9$ of BNS mergers. A maximally rotating SMNS needs to lose $\sim 3-6\times 10^{52}$ erg of it's rotational energy before it collapses, on a fraction of the spin-down timescale. A SMNS formation imprints on the electromagnetic counterparts to the BNS merger. However, a comparison with observations reveals tensions. First, the distribution of collapse times is too wide and that of released energies too narrow (and the energy itself too large) to explain the observed distributions of internal X-ray plateaus, invoked as evidence for SMNS-powered energy injection. Secondly, the immense energy injection into the blastwave should lead to extremely bright radio transients which previous studies found to be inconsistent with deep radio observations of short gamma-ray bursts. Furthermore, we show that upcoming all-sky radio surveys will constrain the extracted energy distribution, independently of a GRB jet formation. Our results can be self-consistently understood, provided that most BNS merger remnants collapse shortly after formation (even if their masses are low enough to allow for SMNS formation). This naturally occurs if the remnant retains half or less of its initial energy by the time it enters solid body rotation.
description: Accepted for publication in ApJ
On feedback passivation under sampling
Creators: name: Mattioni, Mattia
name: Moreschini, Alessio
name: Monaco, Salvatore
name: Normand-Cyrot, Dorothée
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper we show that feedback passivation under sampling can be preserved under digital control through the redefinition of a passifying output map which depends on the sampling period. The design is constructive and approximate solutions make sense. The procedure is applied to port Hamiltonian dynamics and Interconnection and Damping Assignment feedback. Performances are illustrated over the gravity pendulum example.
Correlation of Theoretical Uncertainties in PDF Fits and Theoretical Uncertainties in Predictions
Creators: name: Ball, Richard D.
name: Pearson, Rosalyn L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show how to account for correlations between theoretical uncertainties incorporated in parton distribution function (PDF) fits, and the theoretical uncertainties in the predictions made using these PDFs. We demonstrate by explicit calculations, both analytical and numerical, that these correlations can lead to corrections to the central values of the predictions, and reductions in both the PDF uncertainties and the theoretical uncertainties in the prediction. We illustrate our results with predictions for top production rapidity distributions and the Higgs total cross-section at the LHC, using the NLO NNPDF3.1 PDF set which incorporates missing higher order uncertainties. We conclude that the inclusion of correlations can increase both the accuracy and precision of predictions involving PDFs, particularly for processes with data already included in the PDF fit.
description: 35 pages, 14 figures: final published version
Find the Gap: Black Hole Population Analysis with an Astrophysically Motivated Mass Function
Creators: name: Baxter, Eric J.
name: Croon, Djuna
name: McDermott, Samuel D.
name: Sakstein, Jeremy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce a novel black hole mass function which realistically models the physics of star formation and pair instability supernova with a minimal number of parameters. Applying this to all events in the LIGO-Virgo GWTC-2 catalog, we detect a peak at M_BHMG = 74.8^{+4.3}_{-8.0} MS, followed by a break in the mass function. Repeating the analysis without the black holes from the event GW190521, we find this feature at M_BHMG = 55.4^{+3.0}_{-6.1} MS. The latter result establishes the edge of the anticipated "black hole mass gap" at a value compatible with the expectation from standard stellar structure theory, while the former result is ~ 20MS higher, which would have far-reaching implications if confirmed. Using Bayesian techniques, we establish that our mass function fits a new catalog of black hole masses approximately as well as the pre-existing phenomenological mass functions. We also remark on the implications of these results for constraining or discovering new phenomena in nuclear and particle physics.
description: 6+7 pages; v2: updated analysis with increased evidence and changes to parameter values when applying our model to full dataset, matches version accepted in ApJL
Experimental requirements for entangled two-photon spectroscopy
Creators: name: Lerch, Stefan
name: Stefanov, André
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entangled two-photon spectroscopy is expected to provide advantages compared with classical protocols. It is achieved by coherently controlling the spectral properties of energy-entangled photons. We present here an experimental setup that allows the spectral shaping of entangled photons with high resolution. We evaluate its performances by detecting sum frequency generation in a non-linear crystal. The efficiency of the process is compared when performed with classical or entangled light.
description: 26 pages
Interaction-driven transition between the Wigner crystal and the fractional Chern insulator in topological flat bands
Creators: name: Kupczyński, Michał
name: Jaworowski, Błażej
name: Wójs, Arkadiusz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate an interaction-driven transition between crystalline and liquid states of strongly correlated spinless fermions within topological flat bands at low density (with filling factors $ν=1/5$, $1/7$, $1/9$). Using exact diagonalization for finite size systems with periodic boundary conditions, we distinguish different phases, whose stability depends on the interaction range, controlled by the screening parameter of the Coulomb interaction. The crystalline phases are identified by a crystallization strength, calculated from the Fourier transforms of pair correlation density, while the Fractional Chern insulator phases are characterized using momentum counting rules, entanglement spectrum, and overlaps with corresponding Fractional Quantum Hall states. The type of the phase depends on a particular single particle model and its topological properties. We show that for $ν=1/7$ and $1/5$ it is possible to tune between the Wigner crystal and Fractional Chern insulator phase in the kagome lattice model with the band carrying the Chern number $C=1$. In contrast, in the $C=2$ models, the Wigner crystallization was absent at $ν=1/5$, and appeared at $ν=1/9$, suggesting that $C=2$ FCIs are more stable against the formation of crystalline order
Comprehensive topography characterization of polycrystalline diamond coatings
Creators: name: Gujrati, Abhijeet
name: Sanner, Antoine
name: Khanal, Subarna R.
name: Moldovan, Nicolaie
name: Zeng, Hongjun
name: Pastewka, Lars
name: Jacobs, Tevis D. B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The surface topography of diamond coatings strongly affects surface properties such as adhesion, friction, wear, and biocompatibility. However, the understanding of multi-scale topography, and its effect on properties, has been hindered by conventional measurement methods, which capture only a single length scale. Here, four different polycrystalline diamond coatings are characterized using transmission electron microscopy to assess the roughness down to the sub-nanometer scale. Then these measurements are combined, using the power spectral density (PSD), with conventional methods (stylus profilometry and atomic force microscopy) to characterize all scales of topography. The results demonstrate the critical importance of measuring topography across all length scales, especially because their PSDs cross over one another, such that a surface that is rougher at a larger scale may be smoother at a smaller scale and vice versa. Furthermore, these measurements reveal the connection between multi-scale topography and grain size, with characteristic scaling behavior at and slightly below the mean grain size, and self-affine fractal-like roughness at other length scales. At small (subgrain) scales, unpolished surfaces exhibit a common form of residual roughness that is self-affine in nature but difficult to detect with conventional methods. This approach of capturing topography from the atomic- to the macro-scale is termed comprehensive topography characterization, and all of the topography data from these surfaces has been made available for further analysis by experimentalists and theoreticians. Scientifically, this investigation has identified four characteristic regions of topography scaling in polycrystalline diamond materials.
description: 13 pages, 6 figures
Recovery-based a posteriori error analysis for plate bending problems
Creators: name: Li, Yuwen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N15, 65N30

description: We present two new recovery-based a posteriori error estimates for the Hellan--Herrmann--Johnson method in Kirchhoff--Love plate theory. The first error estimator uses a postprocessed deflection and controls the $L^2$ moment error and the discrete $H^2$ deflection error. The second one controls the $L^2\times H^1$ total error and utilizes superconvergent postprocessed moment field and deflection. The effectiveness of the theoretical results is numerically validated in several experiments.
description: 27 pages, 18 figures
Προηγμένες τεχνικές μοντελοποίησης γραφενίου με εφαρμογές στην ηλεκτρομαγνητική συμβατότητα
Creators: name: Αμανατιάδης, Σταμάτιος Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Γραφένιο
Πεπερασμένες διαφορές στο πεδίο του χρόνου
Υπολογιστικές μέθοδοι
Επιφανειακά κύματα
Graphene
Finite-difference time-domain
Numerical methods
Surface waves

description: Το αντικείμενο της παρούσας διατριβής είναι η ανάπτυξη αριθμητικών τεχνικών με σκοπό την ακριβή και αποδοτική μοντελοποίηση του γραφενίου, ανεξάρτητα από το εφαρμοζόμενο πεδίο πόλωσης και τη συχνότητα, όπου η έλλειψη ενός γενικευμένου και αξιόπιστου μοντέλου είναι φανερή. Αφού επαληθευτεί με επιτυχία η ορθότητα των προτεινόμενων αλγορίθμων, μέσω σύγκρισης με αναλυτικές λύσεις, σχεδιάζονται προηγμένες διατάξεις, έτσι ώστε να μελετηθούν αξιοσημείωτα φαινόμενα στην επιφάνεια του γραφενίου και να προταθούν συσκευές για το παρθένο φάσμα των μακρινών υπέρυθρων συχνοτήτων. Επιπρόσθετα, εξάγονται οι διαδιδόμενοι ρυθμοί σε κυματοδηγούς γραφενίου, μέσω αριθμητικής επίλυσης του προβλήματος ιδιοτιμών της εξίσωσης Helmholtz, στο πεδίο της συχνότητας, και πάλι ανεξάρτητα από το εφαρμοζόμενο πεδίο πόλωσης.
description: The purpose of the current thesis is the development of numerical algorithms in order to model graphene accurately and efficiently, independently of the electromagnetic bias fields and the frequency. The proposed schemes are validated through comprehensive comparisons via theoretically estimated results, in terms of the propagation of plane waves and the highly confined surface waves. Next, the new algorithms are utilized to advanced devices for modern applications at the far-infrared regime, while several remarkable phenomena are numerically examined. Furthermore, the propagating modes of graphene waveguiding systems are numerically extracted though the eigenanalysis of Helmholtz equation, independently to the bias fields.
Atomic ionization by scalar dark matter and solar scalars
Creators: name: Tan, H. B. Tran
name: Derevianko, A.
name: Dzuba, V. A.
name: Flambaum, V. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We calculate the cross-sections of atomic ionization by absorption of scalar particles in the energy range from a few eV to 100 keV. We consider both nonrelativistic particles (dark matter candidates) and relativistic particles which may be produced inside Sun. We provide numerical results for atoms relevant for direct dark matter searches (O, Na, Ar, Ca, Ge, I, Xe, W and Tl). We identify a crucial flaw in previous calculations and show that they overestimated the ionization cross sections by several orders of magnitude due to violation of the orthogonality of the bound and continuum electron wave functions. Using our computed cross-sections, we interpret the recent data from the Xenon1T experiment, establishing the first direct bounds on coupling of scalars to electrons. We argue that the Xenon1T excess can be explained by the emission of scalars from the Sun. While our finding is in a similar tension with astrophysical bounds as the solar axion hypothesis, we establish direct limits on scalar DM for the $\sim 1-10\,\mathrm{keV}$ mass range. We also update axio-ionization cross-sections. Numerical data files are provided.
description: 7 pages, 5 figures. 2nd version: appendix added, citations added, data files included. 3rd version: new results for CaOW_4 added
ผลกระทบของความสามารถในการตอบสนองลูกค้าที่มีต่อคุณภาพผลิตภัณฑ์ของธุรกิจพลังงานทดแทนในประเทศไทย
Creators: name: รัฐธนาภรณ์  ส้มจีน
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: ความสามารถในการตอบสนองลูกค้า, คุณภาพผลิตภัณฑ์

description: 2, 33, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
Embedded Star Formation in the Eagle Nebula with Spitzer/GLIMPSE
Creators: name: Indebetouw, R.
name: Robitaille, T. R.
name: Whitney, B. A.
name: Churchwell, E.
name: Babler, B.
name: Meade, M.
name: Watson, C.
name: Wolfire, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new Spitzer photometry of the Eagle Nebula (M16, containing the optical cluster NGC 6611) combined with near-infrared photometry from 2MASS. We use dust radiative transfer models, mid-infrared and near-infrared color-color analysis, and mid-infrared spectral indices to analyze point source spectral energy distributions, select candidate young stellar objects (YSOs), and constrain their mass and evolutionary state. Comparison of the different protostellar selection methods shows that mid-infrared methods are consistent, but as has been known for some time, near-infrared-only analysis misses some young objects. We reveal more than 400 protostellar candidates, including one massive young stellar object (YSO) that has not been previously highlighted. The YSO distribution supports a picture of distributed low-level star formation, with no strong evidence of triggered star formation in the ``pillars''. We confirm the youth of NGC 6611 by a large fraction of infrared-excess sources, and reveal a younger cluster of YSOs in the nearby molecular cloud. Analysis of the YSO clustering properties shows a possible imprint of the molecular cloud's Jeans length. Multiwavelength mid-IR imaging thus allows us to analyze the protostellar population, to measure the dust temperature and column density, and to relate these in a consistent picture of star formation in M16.
description: 16p preprint - ApJ accepted
ความสัมพันธ์ระหว่างความสมดุลชีวิตในการทำงานกับผลการปฏิบัติงานของผู้จัดการแผนกต้อนรับส่วนหน้าธุรกิจโรงแรมในภาคตะวันออกเฉียงเหนือ
Creators: name: นิศาชล  โทแก้ว
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: ความสมดุลในชีวิตการทำงาน, ผลการปฏิบัติงาน

description: 2, 33, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
Fast Nonblocking Persistence for Concurrent Data Structures
Creators: name: Cai, Wentao
name: Wen, Haosen
name: Maksimovski, Vladimir
name: Du, Mingzhe
name: Sanna, Rafaello
name: Abdallah, Shreif
name: Scott, Michael L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Data Structures and Algorithms (cs.DS)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences
subject: D.1.3; B.2.3
subject: 68W10, 68Q85, 68M15

description: We present a fully lock-free variant of the recent Montage system for persistent data structures. Our variant, nbMontage, adds persistence to almost any nonblocking concurrent structure without introducing significant overhead or blocking of any kind. Like its predecessor, nbMontage is buffered durably linearizable: it guarantees that the state recovered in the wake of a crash will represent a consistent prefix of pre-crash execution. Unlike its predecessor, nbMontage ensures wait-free progress of the persistence frontier, thereby bounding the number of recent updates that may be lost on a crash, and allowing a thread to force an update of the frontier (i.e., to perform a sync operation) without the risk of blocking. As an extra benefit, the helping mechanism employed by our wait-free sync significantly reduces its latency. Performance results for nonblocking queues, skip lists, trees, and hash tables rival custom data structures in the literature -- dramatically faster than achieved with prior general-purpose systems, and generally within 50% of equivalent non-persistent structures placed in DRAM.
จากอดีตถึงปัจจุบันทันอนาคตกับศาสตร์ด้านมนุษยศาสตร์และสังคมศาสตร์
Creators: name: อุทัย  ดุลยเกษม
Publisher: name: วิทยาลัยเทคโนโลยีภาคใต้
Year: 2555
Subjects: มนุษยศาสตร์, สังคมศาสตร์, คุณค่าของความเป็นมนุษย์

description: 2, 5, วารสารเทคโนโลยีภาคใต้
Qualitative properties of solutions in the time differential dual-phase-lag model of heat conduction
Creators: name: Chirita, Stan
name: Ciarletta, Michele
name: Tibullo, Vincenzo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper we study the time differential dual-phase-lag model of heat conduction incorporating the microstructural interaction effect in the fast-transient process of heat transport. We analyse the influence of the delay times upon some qualitative properties of the solutions of the initial boundary value problems associated to such a model. Thus, the uniqueness results are established under the assumption that the conductivity tensor is positive definite and the delay times $τ_q$ and $τ_T$ vary in the set $\{0\leq τ_q\leq 2τ_T\}\cup \{0<2τ_T< τ_q\}$. For the continuous dependence problem we establish two different estimates. The first one is obtained for the delay times with $0\leq τ_q \leq 2τ_T$, which agrees with the thermodynamic restrictions on the model in concern, and the solutions are stable. The second estimate is established for the delay times with $0<2τ_T< τ_q$ and it allows the solutions to have an exponential growth in time. The spatial behavior of the transient solutions and the steady-state vibrations is also addressed. For the transient solutions we establish a theorem of influence domain, under the assumption that the delay times are in $\left\{0
The behaviour of copper on gallium arsenide
Creators: name: Macquistan, David Alexander
Publisher: name: University of British Columbia
Year: 2010

description: Copper is reported to diffuse at a high rate in GaAs (2.6 x 10⁻⁵ cm² s⁻¹ at 600°C). Dislocations and grain boundaries are expected to be preferential diffusion paths for copper diffusion at low temperatures. The present investigation was undertaken to establish to what extent preferential diffusion of Cu occurs along dislocations and grain boundaries in GaAs. The high diffusion rate enables observations to be made in reasonable times at low temperatures. A number of techniques including secondary ion mass spectroscopy, radioactive tracers, cathodoluminescence and photoluminescence were used to detect preferential diffusion. The results do not indicate any preferential diffusion of Cu along dislocations or grain boundaries. Only a very small fraction of the Cu deposited on the surface diffused at a high diffusion rate. Copper reacted with the GaAs between 800°C and 1000°C producing a liquid on the top surface which solidified in complex Cu-Ga-As compounds. In addition, solute rich pipes were observed which extended from the top surface to the bottom of the wafer. No correlation between the position of the pipes and dislocation configuration was evident.
Applications of Deep Learning Techniques for Automated Multiple Sclerosis Detection Using Magnetic Resonance Imaging: A Review
Creators: name: Shoeibi, Afshin
name: Khodatars, Marjane
name: Jafari, Mahboobeh
name: Moridian, Parisa
name: Rezaei, Mitra
name: Alizadehsani, Roohallah
name: Khozeimeh, Fahime
name: Gorriz, Juan Manuel
name: Heras, Jónathan
name: Panahiazar, Maryam
name: Nahavandi, Saeid
name: Acharya, U. Rajendra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Multiple Sclerosis (MS) is a type of brain disease which causes visual, sensory, and motor problems for people with a detrimental effect on the functioning of the nervous system. In order to diagnose MS, multiple screening methods have been proposed so far; among them, magnetic resonance imaging (MRI) has received considerable attention among physicians. MRI modalities provide physicians with fundamental information about the structure and function of the brain, which is crucial for the rapid diagnosis of MS lesions. Diagnosing MS using MRI is time-consuming, tedious, and prone to manual errors. Hence, computer aided diagnosis systems (CADS) based on artificial intelligence (AI) methods have been proposed in recent years for accurate diagnosis of MS using MRI neuroimaging modalities. In the AI field, automated MS diagnosis is being conducted using (i) conventional machine learning and (ii) deep learning (DL) techniques. The conventional machine learning approach is based on feature extraction and selection by trial and error. In DL, these steps are performed by the DL model itself. In this paper, a complete review of automated MS diagnosis methods performed using DL techniques with MRI neuroimaging modalities are discussed. Also, each work is thoroughly reviewed and discussed. Finally, the most important challenges and future directions in the automated MS diagnosis using DL techniques coupled with MRI modalities are presented in detail.
ยุทธศาสตร์ของสถาบันอุดมศึกษาเอกชนท่ามกลางการเปลี่ยนแปลงอย่างรวดเร็ว
Creators: name: อุทัย ดุลยเกษม
Publisher: name: วิทยาลัยเทคโนโลยีภาคใต้
Year: 2556

description: 2, 6, วารสารเทคโนโลยีภาคใต้
Quantum control and entanglement using periodic driving fields
Creators: name: Creffield, C. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We propose a scheme for producing directed motion in a lattice system by applying a periodic driving potential. By controlling the dynamics by means of the effect known as coherent destruction of tunneling, we demonstrate a novel ratchet-like effect that enables particles to be coherently manipulated and steered without requiring local control. Entanglement between particles can also be controllably generated, which points to the attractive possibility of using these technique for quantum information processing.
description: 4 pages, 4 eps figures. V2: minor changes, this version to be published in PRL