cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
BITIRUVCHI SINFLARDA GENDER YONDASHUVI ASOSIDA O'QUV JARAYONINI AMALGA OSHIRISHNING NAZARIY QOIDALARI
Creators: name: Sharifzoda, Sardorbek
name: Karimov, Habibulla
Publisher: name: Zenodo
Year: 2024

description: Pedagogik fan tomonidan gender yondashuvini o'rganish muammosi zamonaviy ta'lim tizimidagi o'zgarishlar tufayli juda dolzarbdir. Gender yondashuvining maqsadi o’quvchi shaxsining ma'lum bir gender vakili sifatida potentsialini rivojlantirishning an'anaviy madaniy cheklovlarini qayta ko'rib chiqish, uning o'zini maksimal darajada anglashi uchun sharoit yaratishdir. Gender yondashuvini amalga oshirish o'quv jarayonini tashkil etish usullari va olingan natijalar sifati bo'yicha an'anaviylardan farq qiladigan yangi o'quv modellarini ishlab chiqish va sinovdan o'tkazishni talab qiladi. Gender yondashuvini amalga oshirish o'qituvchining malakasiga, ya'ni uning gender kompetentsiyasini shakllantirishga ma'lum talablarni qo'yadi.
Model Assisted Design of Oxide Based All Solid State Li Batteries with Hybrid Electrolytes for Aviation
Creators: name: Toghyani, Somayeh
name: Baakes, Florian
name: Zhang, Ningxin
name: Kühnelt, Helmut
name: Cistjakov, Walter
name: Krewer, Ulrike
Publisher: name: Zenodo
Year: 2022
Subjects: IMOTHEP
H2020
H2020 Transport
climate change
electric aircraft
hybrid electric propulsion
green aviation

description: Presentation at the 242nd ECS Meeting, October 9-13, 2022, Atlanta, GA (USA).
What's on your mind? A Mental and Perceptual Load Estimation Framework towards Adaptive In-vehicle Interaction while Driving
Creators: name: Gomaa, Amr
name: Alles, Alexandra
name: Meiser, Elena
name: Rupp, Lydia Helene
name: Molz, Marco
name: Reyes, Guillermo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: H.5.2; H.1.2

description: Several researchers have focused on studying driver cognitive behavior and mental load for in-vehicle interaction while driving. Adaptive interfaces that vary with mental and perceptual load levels could help in reducing accidents and enhancing the driver experience. In this paper, we analyze the effects of mental workload and perceptual load on psychophysiological dimensions and provide a machine learning-based framework for mental and perceptual load estimation in a dual task scenario for in-vehicle interaction (https://github.com/amrgomaaelhady/MWL-PL-estimator). We use off-the-shelf non-intrusive sensors that can be easily integrated into the vehicle's system. Our statistical analysis shows that while mental workload influences some psychophysiological dimensions, perceptual load shows little effect. Furthermore, we classify the mental and perceptual load levels through the fusion of these measurements, moving towards a real-time adaptive in-vehicle interface that is personalized to user behavior and driving conditions. We report up to 89% mental workload classification accuracy and provide a real-time minimally-intrusive solution.
description: Accepted at AutoUI'22
The gas flow diode effect: theoretical and experimental analysis of moderately rarefied gas flows through a microchannel with varying cross section
Creators: name: Graur, I.
name: Veltzke, T.
name: Méolans, J. G.
name: Ho, M. T.
name: Thöming, J.
Publisher: name: Springer
Year: 2014
Subjects: subject: Rarefied gas
subject: Long tapered channel
subject: Gas flow diode effect
subject: Microchannel production
subject: Mass flow rate measuremen
subject: Mimenima
subject: 530

description: Moderately rarefied gas flows are clearly distinguished from viscous flow in the continuum regime and from free molecular flow at high rarefaction. Being of relevance for various technical applications, the understanding of such flow processes is crucial for considerable enhancement in micro electromechanical systems (MEMS) and vacuum techniques. In this work, we focus on the isothermal rarefied gas flow through long channels with longitudinally varying cross section. We apply two approaches, an analytical one and a numerical one that is based on the solution of the linearized S-model, both allowing us to predict the mass flow rate in diverging and converging flow directions for arbitrary pressure gradients. Both approaches are validated by CO2, N2 and Ar permeation experiments on tapered microchannels manufactured by means of micromilling. The local Knudsen numbers ranged from 0.0471 to 0.2263. All the numerical and analytical results are in good agreement to the experimental data and show that the mass flow rate is significantly higher when the duct is perfused in converging direction. The understanding of the physical phenomenon of this gas flow diode effect might pave the way for novel components in MEMS such as static one-way valves.
Strain-Driven Zero-Field Near-10 nm Skyrmions in Two-Dimensional van der Waals Heterostructures
Creators: name: Li, Dongzhe
name: Haldar, Soumyajyoti
name: Heinze, Stefan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetic skyrmions $-$ localized chiral spin structures $-$ show great promise for spintronic applications. The recent discovery of two-dimensional (2D) magnetic materials opened new opportunities for exploring such topological spin structures in atomically thin van der Waals (vdW) materials. Despite recent progress in stabilizing metastable skyrmions in 2D magnets, their diameters are still beyond 100~nm and their lifetime, which is essential for applications, has not been explored yet. Here, using first-principles calculations and atomistic spin simulations, we predict that compressive mechanical strain leads to stabilizing zero-field skyrmions with diameters close to 10 nm in a Fe$_3$GeTe$_2$/germanene vdW heterostructure. The origin of these unique skyrmions is attributed to the high tunability of Dzyaloshinskii-Moriya interaction and magnetocrystalline anisotropy energy by strain, an effect which is shown to be general for Fe$_3$GeTe$_2$ heterostructures with buckled substrates. Based on our first-principles parameters for the magnetic interactions, we calculate the energy barriers protecting skyrmions against annihilation and their lifetimes using transition-state theory. We show that nanoscale skyrmions in strained Fe$_3$GeTe$_2$/germanene can be stable for hours at temperatures up to 20 K.
Extension of the Liège Intranuclear-Cascade model to reactions induced by light nuclei
Creators: name: Mancusi, Davide
name: Boudard, Alain
name: Cugnon, Joseph
name: David, Jean-Christophe
name: Kaitaniemi, Pekka
name: Leray, Sylvie
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The purpose of this paper is twofold. First, we present the extension of the Liège Intranuclear Cascade model to reactions induced by light ions. Second, we describe the C++ version of the code, which it is physics-wise equivalent to the legacy version, is available in Geant4 and will serve as the basis for all future development of the model. We describe the ideas upon which we built our treatment of nucleus-nucleus reactions and we compare the model predictions against a vast set of heterogeneous experimental data. In spite of the discussed limitations of the intranuclear-cascade scheme, we find that our model yields valid predictions for a number of observables and positions itself as one of the most attractive alternatives available to Geant4 users for the simulation of light-ion-induced reactions.
description: Submitted to Phys. Rev. C
What is faster -- light or gravity?
Creators: name: Krasnikov, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: General relativity lacks the notion of the speed of gravity. This is inconvenient and the present paper is aimed at filling this gap up. To that end I introduce the concept of the "alternative" and argue that its variety called the "superluminal alternative" describes exactly what one understands by the "superluminal gravitational signal". Another, closely related, object called the "semi-superluminal alternative" corresponds to the situation in which a massive (and therefore gravitating) body reaches its destination sooner than a photon \emph{would}, be the latter sent \emph{instead} of the body. I prove that in general relativity constrained by the condition that only globally hyperbolic spacetimes are allowed 1) semi-superluminal alternatives are absent and 2) under some natural conditions and conventions admissible superluminal alternative are absent too.
description: A few minor additions more
Accurately Measuring Hyperspectral Imaging Distortion in Grating Spectrographs Using a Clustering Algorithm
Creators: name: Leung, Matthew C. H.
name: Chen, Shaojie
name: Jurgenson, Colby
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Grating-based spectrographs suffer from smile and keystone distortion, which are problematic for hyperspectral data applications. Due to this, spectral lines will appear curved and roughly parabola-shaped. Smile and keystone need to be measured and corrected for accurate spectral and spatial calibration. In this paper, we present a novel method to accurately identify and correct curved spectral lines in an image of a spectrum, using a clustering algorithm we developed specifically for grating spectrographs, inspired by K-means clustering. Our algorithm will be used for calibrating a multi-object spectrograph (MOS) based on a digital micromirror device (DMD). For each spectral line in a spectrum image, our algorithm automatically finds the equation of the parabola which models it. Firstly, the positions of spectral peaks are identified by fitting Gaussian functions to the spectrum image. The peaks are then grouped into a given number of parabola-shaped clusters: each peak is iteratively assigned to the nearest parabola-shaped cluster, such that the orthogonal distances from the parabola are minimized. Smile can then be measured from the parabolas, and keystone as well if a marked slit is used. Our method has been verified on real-world data from a long-slit grating spectrograph with sub-pixel error, and on simulated data from a DMD-based MOS. Compared to traditional approaches, our method can measure distortions automatically and accurately while making use of more spectral lines. With a precise model and measurement of distortion, a corrected hyperspectral data cube can be created, which can be applied for real-time data processing.
description: 20 pages, 38 figures, SPIE Astronomical Telescopes + Instrumentation 2022
Catastrophic Cooling in Superwinds. III. Non-equilibrium Photoionization
Creators: name: Danehkar, A.
name: Oey, M. S.
name: Gray, W. J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Observations of some starburst-driven galactic superwinds suggest that strong radiative cooling could play a key role in the nature of feedback and the formation of stars and molecular gas in star-forming galaxies. These catastrophically cooling superwinds are not adequately described by adiabatic fluid models, but they can be reproduced by incorporating non-equilibrium radiative cooling functions into the fluid model. In this work, we have employed the atomic and cooling module MAIHEM implemented in the framework of the FLASH hydrodynamics code to simulate the formation of radiatively cooling superwinds as well as their corresponding non-equilibrium ionization (NEI) states for various outflow parameters, gas metallicities, and ambient densities. We employ the photoionization program CLOUDY to predict radiation- and density-bounded photoionization for these radiatively cooling superwinds, and we predict UV and optical line emission. Our non-equilibrium photoionization models built with the NEI states demonstrate the enhancement of C IV, especially in metal-rich, catastrophically cooling outflows, and O VI in metal-poor ones.
description: 12 pages, 7 figures (inc. 1 interactive fig), 1 Table (MRT), accepted by ApJ, supplementary data (interactive figure, machine readable table) available on https://galacticwinds.github.io/superwinds/ and archived on https://doi.org/10.5281/zenodo.6601127
Supersymmetric Rényi Entropy in Five Dimensions
Creators: name: Hama, Naofumi
name: Nishioka, Tatsuma
name: Ugajin, Tomonori
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We introduce supersymmetric Rényi entropies for $\mathcal{N}=1$ supersymmetric gauge theories in five dimensions. The matrix model representation is obtained using the localization method and the large-$N$ behavior is studied. The gravity dual is a supersymmetric charged topological AdS$_6$ black hole in the Romans $F(4)$ supergravity. The variation of the supersymmetric Rényi entropy due to the insertion of a BPS Wilson loop is computed. We find perfect agreements between the large-$N$ and the dual gravity computations both with and without the Wilson loop operator.
description: 27pages; v2 typos corrected; v3 minor improvements, to be published
A Memorable Mayoralty: Alderman Sir Jonathan North, JP, DL, and Lady Kate Elizabeth North, Mayor and Mayoress of Leicester 1914-1918
Creators: name: Seaton, Derek
Publisher: name: Archaeology Data Service
Year: 2023

description: Leicestershire Historian, 54, 43-48
description: A history of Alderman Sir Jonathan North, JP, DL, and Lady Kate Elizabeth North, Mayor and Mayoress of Leicester 1914-1918
DIFFERENTIAL PROTEIN EXPRESSION ANALYSIS OF WHEAT CULTIVARS AND GRAIN APHIDS POST-FEEDING
Creators: name: JAVERIA SHAFQAT
name: Dr. AMBER AFROZ
Publisher: name: Zenodo
Year: 2024
Subjects: Protein Extraction, Wheat Cultivars, Aphids, Trichloroacetic Acid, Phenol Extraction, Dye-Lysis Buffer Method, Sodium Dodecyl Sulfate-Polyacrylamide Gel Electrophoresis (SDS-PAGE), Densitometric Analysis, Differential Expression.

description: Abstract

Protein extraction from wheat cultivars (cvs) and aphids was refined through trichloroacetic acid, phenol extraction, and dye-lysis methods. In this study, two wheat cultivars (Galaxy 2013 and NARC 449) were evaluated for their interaction with Sitobion avenae and Rhopalosiphum padi. Aphids were collected from wheat fields and reared on the wheat cultivars under controlled conditions. Protein extraction from both wheat cultivars and aphids employed by three distinct methods: TCA–acetone extraction, phenol extraction, and the Dye-Lysis buffer method. The Dye-Lysis buffer method demonstrated superior consistency and reproducibility in protein band patterns compared to the other extraction protocols. Protein expression variations in aphids and wheat cultivars pre- and post-aphid feeding were identified using Sodium Dodecyl Sulfate-Polyacrylamide Gel Electrophoresis. Densitometry analysis was utilized for the precise quantitation of differentially expressed proteins. Comparative proteomic analysis of wheat cultivars under aphid stress revealed differential expression of proteins related to defence mechanisms, photosynthetic proteins and stress-responsive proteins. Key photosynthetic proteins such as Protoporphyrin IX magnesium chelatase and RuBisCO exhibited downregulation, while stress-responsive proteins like heat shock proteins, as well as defense-related proteins displayed up-regulation following aphids’ infestation. Aphids, specifically S. avenae and R. padi, under infestation conditions, exhibit elevated concentrations of yellow e-3-like protein, peroxidase, trypsin, carbonic anhydrase, apolipophorins, and glyceraldehyde-3 phosphate dehydrogenase in comparison to non-feeding counterparts. These findings contribute to a deeper understanding of the molecular interactions between wheat plants and aphids, providing insights into potential defense mechanisms and vulnerabilities in the host-pathogen relationship.
New Measurement of Compton Scattering from the Deuteron and an Improved Extraction of the Neutron Electromagnetic Polarizabilities
Creators: name: Myers, L. S.
name: Annand, J. R. M.
name: Brudvik, J.
name: Feldman, G.
name: Fissum, K. G.
name: Grießhammer, H. W.
name: Hansen, K.
name: Henshaw, S. S.
name: Isaksson, L.
name: Jebali, R.
name: Kovash, M. A.
name: Lundin, M.
name: McGovern, J. A.
name: Middleton, D. G.
name: Nathan, A. M.
name: Phillips, D. R.
name: Schröder, B.
name: Stave, S. C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The electromagnetic polarizabilities of the nucleon are fundamental properties that describe its response to external electric and magnetic fields. They can be extracted from Compton-scattering data --- and have been, with good accuracy, in the case of the proton. In contradistinction, information for the neutron requires the use of Compton scattering from nuclear targets. Here we report a new measurement of elastic photon scattering from deuterium using quasimonoenergetic tagged photons at the MAX IV Laboratory in Lund, Sweden. These first new data in more than a decade effectively double the world dataset. Their energy range overlaps with previous experiments and extends it by 20 MeV to higher energies. An analysis using Chiral Effective Field Theory with dynamical Δ(1232) degrees of freedom shows the data are consistent with and within the world dataset. After demonstrating that the fit is consistent with the Baldin sum rule, extracting values for the isoscalar nucleon polarizabilities and combining them with a recent result for the proton, we obtain the neutron polarizabilities as α_n = [11.55 +/- 1.25(stat) +/- 0.2(BSR) +/- 0.8(th)] X 10^{-4} fm^3 and β_n = [3.65 -/+ 1.25(stat) +/- 0.2(BSR) -/+ 0.8(th)] X 10^{-4} fm3, with χ^2 = 45.2 for 44 degrees of freedom.
description: 6 pages, 3 figures, comments from Physical Review Letters Referees addressed
Measurements of the suppression and correlations of dijets in Xe+Xe collisions at $\sqrt{s_{NN}}$ = 5.44 TeV
Creators: name: ATLAS Collaboration
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023
Subjects: parton: scattering
dijet: momentum
dijet: suppression
parton: energy loss
energy: density
TeV
GeV
correlation
fluctuation
peripheral
path length
interpretation of experiments: CERN LHC Coll
anti-kT algorithm
interpretation of experiments: ATLAS

description: Measurements of the suppression and correlations of dijets is performed using 3 $\mu$b$^{-1}$ of Xe+Xe data at $\sqrt{s_{\mathrm{NN}}} = 5.44$ TeV collected with the ATLAS detector at the LHC. Dijets with jets reconstructed using the $R=0.4$ anti-$k_t$ algorithm are measured differentially in jet $p_{\text{T}}$ over the range of 32 GeV to 398 GeV and the centrality of the collisions. Significant dijet momentum imbalance is found in the most central Xe+Xe collisions, which decreases in more peripheral collisions. Results from the measurement of per-pair normalized and absolutely normalized dijet $p_{\text{T}}$ balance are compared with previous Pb+Pb measurements at $\sqrt{s_{\mathrm{NN}}} =5.02$ TeV. The differences between the dijet suppression in Xe+Xe and Pb+Pb are further quantified by the ratio of pair nuclear-modification factors. The results are found to be consistent with those measured in Pb+Pb data when compared in classes of the same event activity and when taking into account the difference between the center-of-mass energies of the initial parton scattering process in Xe+Xe and Pb+Pb collisions. These results should provide input for a better understanding of the role of energy density, system size, path length, and fluctuations in the parton energy loss.
Sistemas de saberes africanos y afrodiaspóricos y sus intertextualidades: la obra de César Mba Abogo (y otros ejemplos)
Creators: name: Borst, Julia
Publisher: name: Vervuert
Year: 2022
Subjects: subject: Africa
subject: Diaspora
subject: Intertextuality
subject: 400

description: En su ensayo pionero, William Safran (1991: 83-84) define una comuni-dad diaspórica como un grupo minoritario disperso que mantiene estrechos vínculos con el país de origen, reteniendo una memoria o visión colectiva de esta patria abandonada. Dado que sufre de discriminación y exclusión en el país de acogida, esta comunidad mantiene un deseo de retorno “que no necesariamente involucra la repatriación, pero sí conlleva un constante retorno imaginativo, afectivo y material” (Golubov 2011: 16). Contraria-mente a esta definición, que se refiere sobre todo a ejemplos clásicos como la diáspora judía, otros enfoques que han investigado el potencial del concepto para contextos poscoloniales y de creciente migración global (sobre todo del Sur Global al Norte) subrayan que “los vínculos transnacionales [...] no necesitan articularse en primer lugar a través de una patria real o simbóli-ca” (Clifford 2011: 88).
Screening properties and plasmons of Hg(Cd)Te quantum wells
Creators: name: Juergens, Stefan
name: Michetti, Paolo
name: Trauzettel, Björn
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Under certain conditions, Hg(Cd)Te quantum wells (QWs) are known to realize a time-reversal symmetric, two-dimensional topological insulator phase. Its low-energy excitations are well-described by the phenomenological Bernevig-Hughes-Zhang (BHZ) model that interpolates between Schrödinger and Dirac fermion physics. We study the polarization function of this model in random phase approximation (RPA) in the intrinsic limit and at finite doping. While the polarization properties in RPA of Dirac and Schrödinger particles are two comprehensively studied problems, our analysis of the BHZ model bridges the gap between these two limits, shedding light on systems with intermediate properties. We gain insight into the screening properties of the system and on its characteristic plasma oscillations. Interestingly, we discover two different kinds of plasmons that are related to the presence of intra- and interband excitations. Observable signatures of these plasmons are carefully analyzed in a variety of distinct parameter regimes, including the experimentally relevant ones for Hg(Cd)Te QWs. We conclude that the discovered plasmons are observable by Raman or electron loss spectroscopy.
Proton distribution radii of $^{16-24}$O: signatures of new shell closures and neutron skin
Creators: name: Kaur, S.
name: Kanungo, R.
name: Horiuchi, W.
name: Hagen, G.
name: Holt, J. D.
name: Hu, B. S.
name: Miyagi, T.
name: Suzuki, T.
name: Ameil, F.
name: Atkinson, J.
name: Ayyad, Y.
name: Bagchi, S.
name: Cortina-Gil, D.
name: Dillmann, I.
name: Estradé, A.
name: Evdokimov, A.
name: Farinon, F.
name: Geissel, H.
name: Guastalla, G.
name: Janik, R.
name: Knöbel, R.
name: Kurcewicz, J.
name: Litvinov, Yu. A.
name: Marta, M.
name: Mostazo, M.
name: Mukha, I.
name: Nociforo, C.
name: Ong, H. J.
name: Otsuka, T.
name: Pietri, S.
name: Prochazka, A.
name: Scheidenberger, C.
name: Sitar, B.
name: Strmen, P.
name: Takechi, M.
name: Tanaka, J.
name: Tanihata, I.
name: Terashima, S.
name: Vargas, J.
name: Weick, H.
name: Winfield, J. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The root mean square radii of the proton density distribution in $^{16-24}$O derived from measurements of charge changing cross sections with a carbon target at $\sim$900$A$ MeV together with the matter radii portray thick neutron skin for $^{22 - 24}$O despite $^{22,24}$O being doubly magic. Imprints of the shell closures at $N$ = 14 and 16 are reflected in local minima of their proton radii that provide evidence for the tensor interaction causing them. The radii agree with it ab initio calculations employing the chiral NNLO$_{\mathrm{sat}}$ interaction, though skin thickness predictions are challenged. Shell model predictions agree well with the data.
description: 6 pages, 3 figures, accepted for publication in Physical Review Letters
Multicomponent gas diffusion in nonuniform tubes
Creators: name: Veltzke, Thomas
name: Kiewidt, Lars
name: Thöming, Jorg
Publisher: name: Wiley
Year: 2014
Subjects: subject: gas multicomponent diffusion
subject: experiments on conical tubes
subject: classical Maxwell–Stefan equations
subject: analytical transport model
subject: two-bulb diffusion experiment
subject: Mimenima
subject: 620

description: In many technical processes gas, multicomponent diffusion takes place in confinements that are rarely uniform in direction of their long axis (e.g., catalysts pores). Here, we show that in conical tubes multicomponent diffusion is hindered. This effect increases with ratio of inlet to outlet cone radius Λ, indifferent of the orientation of the tube. Based on the Maxwell–Stefan equations, predictive analytical solution for ideal multicomponent diffusion in slightly tapered ducts is developed. In two-bulb diffusion experiments on a uniform tube, the results of Duncan and Toor (1962) were reproduced. Comparison of model and experiment shows that the solution presented here provides a reliable quantitative prediction of the temporal change of H2, N2, and CO2-concentration for both tube geometries, uniform and slightly conical. In the demonstrated case (Λ = 3.16), mass diffusion is 68% delayed. Thus, for gaseous diffusion in “real,” typically tapered pores the transport limitation is more serious than considered so far. © 2014 American Institute of Chemical Engineers AIChE J, 61: 1404–1412, 2015
Higher order light-cone distribution amplitudes of the Lambda baryon
Creators: name: Liu, Yong-Lu
name: Cui, Chun-Yu
name: Huang, Ming-Qiu
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The improved light-cone distribution amplitudes (LCDAs) of the $Λ$ baryon are examined on the basis of the QCD conformal partial wave expansion approach. The calculations are carried out to the next-to-leading order of conformal spin accuracy with consideration of twist 6. The next leading order conformal expansion coefficients are related to the nonperturbative parameters defined by the local three quark operator matrix elements with different Lorentz structures with a covariant derivative. The nonperturbative parameters are determined with the QCD sum rule method. The explicit expressions of the LCDAs are provided as the main results.
description: 17pages,10figures. arXiv admin note: text overlap with arXiv:1311.5960
Surfactant assisted syntheses of monolithic hybrid ceramics with hierarchical porosity
Creators: name: Schlüter, Florian
name: Wilhelm, Michaela
name: Rezwan, Kurosch
Publisher: name: Elsevier
Year: 2015
Subjects: subject: Hybrid ceramic
subject: Emulsion
subject: Monolithic material
subject: Porosity
subject: Surface characteristics
subject: Mimenima
subject: 620

description: A surfactant assisted emulsion-based syntheses route is presented for obtaining organo-silica-based monolithic hybrid ceramics with a hierarchical pore size distribution and tailorable surface characteristics. Methyl polysiloxane (MK) and methyl-phenyl polysiloxane (H44) with varying mixing ratios are selected as precursors, cross-linked and subsequently pyrolyzed at 500 °C or 600 °C, respectively. By adjusting the oil/water ratio and by tailoring the surfactant concentration controlled micro and macropore distributions with mesoscopic cell windows are obtained. After pyrolysis, specific surface areas of up to 600 m2/g are achieved. In addition, due to the distinguished pyrolysis decomposition behavior of MK and H44, the adjustment of the surface characteristics in terms of hydrophobicity or hydrophilicity is demonstrated. The presented surfactant assisted emulsion-based process is hence highly suitable for tailoring pore size distribution and surface characteristics at the same time. Both material properties are pivotal features for catalysis and gas separation applications.
СПОРТ МУСОБАҚАЛАРИДА КЕЛИШИЛГАН ЎЙИНЛАРГА ҚАРШИ КУРАШГА ОИД ҲОРИЖ ТАЖРИБАСИ
Creators: name: Бахтиярова, Севара
Publisher: name: Zenodo
Year: 2024

description: Мақолада спорт мусобақаларида келишилган ўйинларга қарши курашга оид хорижий давлатларнинг норматив ҳуқуқий ҳужжатлари, қўлланиладиган жазо чоралари қиёсий таҳлил этилиб, жиноят иши ҳолатларидан мисоллар келтирилган.
Training Strategies for Improved Lip-reading
Creators: name: Ma, Pingchuan
name: Wang, Yujiang
name: Petridis, Stavros
name: Shen, Jie
name: Pantic, Maja
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Several training strategies and temporal models have been recently proposed for isolated word lip-reading in a series of independent works. However, the potential of combining the best strategies and investigating the impact of each of them has not been explored. In this paper, we systematically investigate the performance of state-of-the-art data augmentation approaches, temporal models and other training strategies, like self-distillation and using word boundary indicators. Our results show that Time Masking (TM) is the most important augmentation followed by mixup and Densely-Connected Temporal Convolutional Networks (DC-TCN) are the best temporal model for lip-reading of isolated words. Using self-distillation and word boundary indicators is also beneficial but to a lesser extent. A combination of all the above methods results in a classification accuracy of 93.4%, which is an absolute improvement of 4.6% over the current state-of-the-art performance on the LRW dataset. The performance can be further improved to 94.1% by pre-training on additional datasets. An error analysis of the various training strategies reveals that the performance improves by increasing the classification accuracy of hard-to-recognise words.
description: ICASSP 2022. Code is available at https://sites.google.com/view/audiovisual-speech-recognition
High-Accuracy Determination of Paul-Trap Stability Parameters for Electric-Quadrupole-Shift Prediction
Creators: name: Lindvall, T.
name: Hanhijärvi, K. J.
name: Fordell, T.
name: Wallin, A. E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The motion of an ion in a radiofrequency (rf) Paul trap is described by the Mathieu equation and the associated stability parameters that are proportional to the rf and dc electric field gradients. Here, a higher-order, iterative method to accurately solve the stability parameters from measured secular frequencies is presented. It is then used to characterize an endcap trap by showing that the trap's radial asymmetry is dominated by the dc field gradients and by measuring the relation between the applied voltages and the gradients. The results are shown to be in good agreement with an electrostatic finite-element-method simulation of the trap. Furthermore, a method to determine the direction of the radial trap axes using a 'tickler' voltage is presented and the temperature dependence of the rf voltage is discussed. As an application for optical ion clocks, the method is used to predict and minimize the electric quadrupole shift (EQS) using the applied dc voltages. Finally, a lower limit of 1070 for the cancellation factor of the Zeeman-averaging EQS cancellation method is determined in an interleaved low/high EQS clock measurement. This reduces the EQS uncertainty of our $^{88}$Sr$^+$ optical clock to ${\lesssim} 1\times 10^{-19}$ in fractional frequency units.
description: The following article has been accepted by Journal of Applied Physics. After it is published, it will be found at https://doi.org/10.1063/5.0106633. 13 pages, 10 figures
Theoretical Study of the Stability of $\mathrm{Au_nGe_{m}}$ Clusters
Creators: name: McDermott, Danielle
name: Newman, Kathie E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We investigate the properties of clusters formed from two connected $\mathrm{Ge_{m}}$ cage-like clusters, such as experimentally synthesized $\mathrm{Au_3Ge_{18}^{5-}}$, using first-principles DFT methods. We focus particularly on $\mathrm{Au_nGe_{12}^{q-}}$ formed from $\mathrm{Ge_{6}}$, where $n=0-3$ and $q=0,2$. We examine the geometries, electronic structure, and thermal excitations of these clusters using the SIESTA code, where we test stability using short molecular dynamics simulations. Our examination of intercluster bridges between $\mathrm{Ge_{m}}$, formed of either Ge-Ge or Au-Ge bonds, indicates that the overlap of interacting molecular orbitals of $\mathrm{Ge_{m}}$~can either bind a cluster together or tear it apart depending on the orientation of the bridging atoms with respect to the cages. We characterize the properties of stable isomers of neutrally charged $\mathrm{AuGe_{12}}$ and $\mathrm{Au_2Ge_{12}}$, seeing that radially directed molecular orbitals stabilize $\mathrm{AuGe_{12}}$ while a geometric asymmetry stabilizes $\mathrm{Au_2Ge_{12}}$ and $\mathrm{Au_3Ge_{18}}$. We examine a two-dimensional $_2^\infty[\mathrm{Au_2Ge_{6}}]$ structure, finding it more stable than other periodic $[\mathrm{Au_nGe_{6}}]$ subunits. We observe no stable neutral isomers of $\mathrm{Au_3Ge_{12}}$, but see that additional charge supports isomers of both $\mathrm{Au_2Ge_{12}}$ and $\mathrm{Au_3Ge_{12}}$.
description: 19 pages, 16 figures + 7 supplemental figures
Cosmological Evolution of Fundamental Constants: From Theory to Experiment
Creators: name: Calmet, Xavier
name: Keller, Matthias
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we discuss a possible cosmological time evolution of fundamental constants from the theoretical and experimental point of views. On the theoretical side, we explain that such a cosmological time evolution is actually something very natural which can be described by mechanisms similar to those used to explain cosmic inflation. We then discuss implications for grand unified theories, showing that the unification condition of the gauge coupling could evolve with cosmological time. Measurements of the electron-to-proton mass ratio can test grand unified theories using low energy data. Following the theoretical discussion, we review the current status of precision measurements of fundamental constants and their potential cosmological time dependence.
description: Invited paper to the Special Issue: "Fundamental Constants in Physics and Their Time Variation" (Modern Physics Letters A, Guest Ed. Joan Sol\`a)
On the suppression of background signals originating from NMR hardware components. Application to zero echo time imaging and relaxation time analysis
Creators: name: Dreher, Wolfgang
name: Bardenhagen, Ingo
name: Huang, Li
name: Bäumer, Marcus
Publisher: name: Elsevier
Year: 2016
Subjects: subject: Zero echo time (ZTE)
subject: Relaxation time analysis
subject: T1 relaxation
subject: Outer volume suppression (OVS)
subject: Higher-order shim coils
subject: Porous media
subject: Mimenima
subject: 620

description: Modern NMR imaging systems used for biomedical research are equipped with B0 gradient systems with strong maximum gradient strength and short switching time enabling (1)H NMR measurements of samples with very short transverse relaxation times. However, background signal originating from non-optimized RF coils may hamper experiments with ultrashort delays between RF excitation and signal reception. We demonstrate that two simple means, outer volume suppression and the use of shaped B0 fields produced by higher-order shim coils, allow a considerable suppression of disturbing background signals. Thus, the quality of NMR images acquired at ultrashort or zero echo time is improved and systematic errors in quantitative data evaluation are avoided. Fields of application comprise MRI with ultrashort echo time or relaxation time analysis, for both biomedical research and characterizing porous media filled with liquids or gases.
Isolate record for VAFB-ISO-503
Creators: name: Holloway, Corinne
Year: 1900
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory
subject: Chipped Stone
valueUri: https://core.tdar.org/browse/material-type/2/chipped-stone
subject: Chert
valueUri: https://core.tdar.org/browse/material-type/213/chert
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey

description: This document is the isolated find record for VAFB-ISO-503. The artifacts are a black and white banded Monterey chert flake and a black and white banded Monterey chert shatter.
title: Cardiac allograft vasculopathy in a long-term follow-up after heart transplantation: Role of remnant cholesterol in residual inflammation
Creators: name: Alyaydin, Emyal
name: Pogoda, Christian
name: Dell'Aquila, Angelo Maria
name: Martens, Sven
name: Tuleta, Izabela
name: Reinecke, Holger
name: Sindermann, Jürgen
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2022
Subjects: subject: 610 Medicine and health

description: Background: Cardiac allograft vasculopathy (CAV) is a major prognosis limiting factor in heart transplantation (HTx). Disease development and progression are influenced by multiple determinants, but the role of remnant cholesterol (RC) in CAV has not yet been investigated. Therefore, the present study aimed to assess the prevalence of CAV in a very long-term follow-up after orthotopic HTx and to examine the role of RC in residual inflammation despite secondary prevention. Methods: Herein, is a retrospective analysis of patient data collected at the last follow-up visit in an outpatient setting. Additionally, RC levels were calculated based upon cholesterol profile. Results: The study population consisted of 184 patients with a mean follow-up of 15.0 ± 6.8 years. More than 40% of the overall cohort had CAV at last follow-up. The mean RC was 27.1 ± 14.7 mg/dL. Patients with CAV had significantly elevated RC despite intensified statin treatment (p = 0.018). A positive correlation was observed between RC and interleukin-6 as a marker of residual inflammation. Elevated RC and prolonged follow-up emerged as significant factors related to CAV in a multivariate analysis (odds ratio [OR] 2.9, 95% confidence interval [CI] 1.5–5.5, p = 0.001 and OR 3.3, 95% CI 1.4–7.7, p = 0.006, respectively), whereas mycophenolate mofetil was inversely associated with CAV (OR 0.4, 95% CI 0.2–0.9, p = 0.034). Conclusions: Remnant cholesterol has proinflammatory properties and is associated with CAV development in HTx. Thus, RC should be concerned as an additional tool for risk assessment.
description: Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).
Automatic fetal fat quantification from MRI
Creators: name: Avisdris, Netanell
name: Rabinowich, Aviad
name: Fridkin, Daniel
name: Zilberman, Ayala
name: Lazar, Sapir
name: Herzlich, Jacky
name: Hananis, Zeev
name: Link-Sourani, Daphna
name: Ben-Sira, Liat
name: Hiersch, Liran
name: Bashat, Dafna Ben
name: Joskowicz, Leo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Normal fetal adipose tissue (AT) development is essential for perinatal well-being. AT, or simply fat, stores energy in the form of lipids. Malnourishment may result in excessive or depleted adiposity. Although previous studies showed a correlation between the amount of AT and perinatal outcome, prenatal assessment of AT is limited by lacking quantitative methods. Using magnetic resonance imaging (MRI), 3D fat- and water-only images of the entire fetus can be obtained from two point Dixon images to enable AT lipid quantification. This paper is the first to present a methodology for developing a deep learning based method for fetal fat segmentation based on Dixon MRI. It optimizes radiologists' manual fetal fat delineation time to produce annotated training dataset. It consists of two steps: 1) model-based semi-automatic fetal fat segmentations, reviewed and corrected by a radiologist; 2) automatic fetal fat segmentation using DL networks trained on the resulting annotated dataset. Three DL networks were trained. We show a significant improvement in segmentation times (3:38 hours to < 1 hour) and observer variability (Dice of 0.738 to 0.906) compared to manual segmentation. Automatic segmentation of 24 test cases with the 3D Residual U-Net, nn-UNet and SWIN-UNetR transformer networks yields a mean Dice score of 0.863, 0.787 and 0.856, respectively. These results are better than the manual observer variability, and comparable to automatic adult and pediatric fat segmentation. A radiologist reviewed and corrected six new independent cases segmented using the best performing network, resulting in a Dice score of 0.961 and a significantly reduced correction time of 15:20 minutes. Using these novel segmentation methods and short MRI acquisition time, whole body subcutaneous lipids can be quantified for individual fetuses in the clinic and large-cohort research.
description: 13 pages, 4 Figures, 3 Tables, Accepted to PIPPI/MICCAI 2022
Multipartite Bell-type Inequality by Generalizing Wigner's Argument
Creators: name: Home, Dipankar
name: Saha, Debashis
name: Das, Siddhartha
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Wigner's argument inferring Bell-type inequality for the EPR-Bohm entangled state is generalized here for any N-partite state. This is based on assuming for the relevant dichotomic observables the existence of the overall joint probability distributions, satisfying the locality condition, that would yield the measurable marginal probabilities. For any N, such Generalized Wigner's Inequality (GWI) is violated by quantum mechanics for all pure entangled states. The efficacy of GWI is probed, comparing with the Seevinck-Svetlichny multipartite Bell-type inequality, by calculating threshold visibilities for the quadripartite GHZ, Cluster andWstates that determine their respective robustness with respect to the quantum mechanical violation of GWI in the presence of white noise.
A physical explanation of the gas flow diode effect
Creators: name: Graur, I.
name: Méolans, J. G.
name: Perrier, P.
name: Thöming, J.
name: Veltzke, T.
Publisher: name: Springer
Year: 2016
Subjects: subject: Mass Flow Rate
subject: Knudsen Number
subject: Hydraulic Diameter
subject: Slip Boundary Condition
subject: Tapered Channel
subject: Mimenima
subject: 530

description: Gas flow properties in channels with slightly varying cross section have a dependency on the direction of channel perfusion when the gas is in the slip and transitional flow regimes. In the past, it was observed that the flow rate in converging direction is higher compared to the case where the channel diverges alongside. This gas flow diode effect does neither exist in the continuum regime nor in the free molecular regime, and it has its maximum at the same level of gaseous rarefaction as the well-known Knudsen minimum. However, no comprehensive study on the physics of this diode effect is carried out yet. In order to overcome this knowledge gap, the current paper proceeds our previous works by an appropriate experimental study. Here we can show that the diode effect crucially depends on the proportion of inclined walls to the overall channel inner surface. Also the inclination of the wall itself determines the strength of the diode effect meaning that the diodicity increases with the opening angle. Furthermore, we found indication that the diodicity also depends on the molar mass and the internal structure of the impinging gas molecules. Finally, we propose an explanation of the diode effect that is mainly based on the tangential reflection process of gas molecules colliding with the inclined walls of a tapered channel.
A special role of Boolean quadratic polytopes among other combinatorial polytopes
Creators: name: Maksimenko, Aleksandr
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computational Complexity (cs.CC)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We consider several families of combinatorial polytopes associated with the following NP-complete problems: maximum cut, Boolean quadratic programming, quadratic linear ordering, quadratic assignment, set partition, set packing, stable set, 3-assignment. For comparing two families of polytopes we use the following method. We say that a family $P$ is affinely reduced to a family $Q$ if for every polytope $p\in P$ there exists $q\in Q$ such that $p$ is affinely equivalent to $q$ or to a face of $q$, where $\dim q = O((\dim p)^k)$ for some constant $k$. Under this comparison the above-mentioned families are splitted into two equivalence classes. We show also that these two classes are simpler (in the above sence) than the families of poytopes of the following problems: set covering, traveling salesman, 0-1 knapsack problem, 3-satisfiability, cubic subgraph, partial ordering. In particular, Boolean quadratic polytopes appear as faces of polytopes in every of the mentioned families.
description: 16 pages
MPEC 2023-F236 : DAILY ORBIT UPDATE (2023 March 30)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Virial coefficients in $(\tildeμ,q)$-Bose gas model related to compositeness of particles and their interaction: temperature-dependence problem
Creators: name: Gavrilik, A. M.
name: Mishchenko, Yu. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We establish the relation of the second virial coefficient of certain $(\tildeμ,q)$-deformed Bose gas model, recently proposed by the authors in [Ukr. J. Phys., 2013], to the interaction and compositeness parameters when either of these factors is taken into account separately. When the interaction is dealt with, the deformation parameter becomes linked directly to the scattering length, and the effective radius of interaction (in general, to scattering phases). The additionally arising temperature dependence is a new feature absent in the deformed Bose gas model within adopted interpretation of the deformation parameters $\tildeμ$ and $q$. Here the problem of the temperature dependence is analyzed in detail and its possible solution is proposed.
description: 8 pages, two-column style; v2: Minor revision, two paragraphs and two refs. added, accepted for publication in Phys. Rev. E