cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A facile approach of tetraaqua-bis[4-(H-tetrazol-5-yl)pyridinato]-zinc(II) dihydrate with their biological activities
Creators: name: Gutta, Rama Devi
name: Rajack, Abdul
name: Sunkara, Satya Veni
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: A zinc(II) complex, tetraaqua-bis[4-(H-tetrazol-5-yl)pyridinato]-zinc(II) dehydrate, has been synthesized in situ from isonicotinonitrile and sodium azide utilizing green methods. The complex is characterized by IR, SEM-EDAX, PXRD, and TGA techniques. The octahedron structure with two 4-PTZ ligands and four aqua ligands binding to the zinc metal was confirmed by SCXRD studies. HOMO–LUMO energies were determined from DFT studies. The electrostatic potential is calculated to confirm the intermolecular hydrogen bonding. Photocatalytic activity of the complex was detected by degrading methyl orange, methylene blue, and congo red dyes. The synthesized complex was biologically evaluated for its DNA-cleavage, antioxidant and antibacterial activity, and effective inhibition of bacterial proteins compared with molecular docking studies.
Liquidity Costs, Idiosyncratic Volatility and Expected Stock Returns
Creators: name: Bradrania, M. Reza
name: Peat, Maurice
name: Satchell, Stephen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Pricing of Securities (q-fin.PR)
subject: FOS: Economics and business

description: This paper considers liquidity as an explanation for the positive association between expected idiosyncratic volatility (IV) and expected stock returns. Liquidity costs may affect the stock returns, through bid-ask bounce and other microstructure-induced noise, which will affect the estimation of IV. We use a novel method (developed by Weaver, 1991) to eliminate microstructure influences from stock closing price-based returns and then estimate IV. We show that there is a premium for IV in value-weighted portfolios, but this premium is less strong after correcting returns for microstructure bias. We further show that this premium is driven by liquidity in the prior month after correcting returns for microstructure noise. The pricing results from equally-weighted portfolios indicate that IV does not predict returns either before or after controlling for liquidity costs. These findings are robust after controlling for common risk factors as well as analysing double-sorted portfolios based on IV and liquidity.
Dipole-dipole interaction in arrays of Fe/Fe$_x$O$_y$ core/shell nanocubes probed by ferromagnetic resonance
Creators: name: Sukhov, A.
name: Horley, P. P.
name: Berakdar, J.
name: Terwey, A.
name: Meckenstock, R.
name: Farle, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This paper represents a detailed theoretical study of the role of the longrange magnetic dipole-dipole interaction evidenced by the ferromagnetic resonance (FMR) spectra for the ordered arrays of cubic nanoparticles. We show that the size of the array essentially controls the stability of the system, allowing to suppress the intermittent low-field excitations starting from the arrays formed by 6x6 nanoparticles. Our numerical simulations allow to determine the threshold inter-particle distance (around 80 ÷ 100 nm), after which the dipole-dipole interaction becomes negligible so that the FMR spectrum of the nanoparticle arrays becomes the same as the spectrum featured by a single nanoparticle. We also compare our simulations with experimental FMR-spectra of 24 Fe/Fe$_x$O$_y$-nanocubes irregularly placed on a substrate.
description: 16 pages, 8 figures
Exchange renormalized crystal field excitation in a quantum Ising magnet KTmSe$_2$
Creators: name: Zheng, Shiyi
name: Wo, Hongliang
name: Gu, Yiqing
name: Luo, Rui Leonard
name: Gu, Yimeng
name: Zhu, Yinghao
name: Steffens, Paul
name: Boehm, Martin
name: Wang, Qisi
name: Chen, Gang
name: Zhao, Jun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Rare-earth delafossite compounds, ARCh$_2$ (A = alkali or monovalent ion, R = rare earth, Ch = chalcogen), have been proposed for a range of novel quantum phenomena. Particularly, the Tm series, ATmCh$_2$, featuring Tm ions on a triangular lattice, serves as a representative group of compounds to illustrate the interplay and competition between spin-orbit coupling, crystal fields, and exchange couplings in the presence of geometric frustration. Here we report the thermodynamic and inelastic neutron scattering studies on the newly discovered triangular-lattice magnet KTmSe$_2$. Both heat capacity and neutron diffraction reveal the absence of long-range magnetic order. Magnetic susceptibility shows strong Ising-like interactions with antiferromagnetic correlations. Furthermore, inelastic neutron scattering measurements reveal a branch of dispersive crystal field excitations. To analyze these observations, we employ both the transverse field Ising model and the full crystal field scheme, along with exchange interactions. Our results suggest a strong competition between spin exchange interactions and crystal field effects. This work is expected to offer a valuable framework for understanding low-temperature magnetism in KTmSe$_2$ and similar materials.
description: 9 pages, 4 figures. Submitted on the behalf of Shiyi Zheng
The representations of the sky among the Tomaraho
Creators: name: Sequera, Guillermo
name: Gangui, Alejandro
Publisher: name: arXiv
Year: 2014
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Tomárãho is an ethnic group of the Paraguayan Chaco who maintained close contact with nature and developed original ways of explaining and understanding it. This article presents the first results of an interdisciplinary project seeking to provide a detailed analysis of different astronomical elements in the imagined sky of the Tomárãho.
description: Article in Spanish, PDF document including 10 figures
Calculation of multichannel reactions in the four-nucleon system above breakup threshold
Creators: name: Deltuva, A.
name: Fonseca, A. C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Nuclear Experiment (nucl-ex)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Exact four-body equations of Alt, Grassberger and Sandhas are solved for neutron-${}^3\mathrm{He}$ and proton-${}^3\mathrm{H}$ scattering in the energy regime above the four-nucleon breakup threshold. Cross sections and spin observables for elastic, transfer, charge-exchange, and breakup reactions are calculated using realistic nucleon-nucleon interaction models, including the one with effective many-nucleon forces due to explicit $Δ$-isobar excitation. The experimental data are described reasonably well with only few exceptions such as vector analyzing powers.
description: 5 pages, 6 figures, to be published in Phys. Rev. Lett
Synthesis, crystal structure and spectral studies of silver(I) cyclohexyldiphenylphosphine complexes: towards the biological evaluation on malignant and non-malignant cells
Creators: name: Naganagowda, Gadada
name: Engelbrecht, Zelinda
name: Potgieter, Kariska
name: Malan, Frederick P.
name: Ncube, Phendukani
name: Cronjé, Marianne J.
name: Meijboom, Reinout
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: Cancer

description: Cancer is a fast-growing disease responsible for many deaths worldwide. Due to its aggressive and forever-changing nature, it is imperative to find alternative anti-cancer agents that could possibly treat this disease. Silver(I) phosphine complexes were synthesized by reaction of AgNO3, AgCl, and AgBr with cyclohexyldiphenylphosphine to produce 1:1, 1:2, or 1:3 molar ratios of new silver complexes with the formulas [Ag(PPh2Cy)NO3] (1), [Ag(PPh2Cy)2NO3] (2), [Ag(PPh2Cy)3NO3] (3), [Ag(PPh2Cy)2Cl] (4), [Ag(PPh2Cy)3Cl] (5), and [Ag(PPh2Cy)3Br] (6), respectively. The complexes were characterized by elemental analyses, FT-IR and 1H, 13C, 31P NMR spectroscopic techniques. The crystal structures of 5 (CCDC 1480482) and 6 (CCDC 2183297) were determined by single-crystal X-ray diffractometry. All six complexes were evaluated as potential anti-cancer agents in four different human malignant (SNO, MCF-7, A375, and A549) cell lines and one human non-malignant (HEK293) cell line. Overall, these complexes were significantly cytotoxic to both cancerous and non-cancerous cells and are therefore not considered suitable anti-cancer agents in their current form.
Additional file 4 of Scar quality examination comparing titanium-coated suture material and non-coated suture material on flap donor sites in reconstructive surgery
Creators: name: Berninghausen, Laura K.
name: Osterhoff, Georg
name: Langer, Stefan
name: Kohler, Lukas H.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology

description: Additional file 4. Photographic documentation of wound closure in ALT donor site on day 14.
Robust Point Cloud Registration Framework Based on Deep Graph Matching(TPAMI Version)
Creators: name: Fu, Kexue
name: Luo, Jiazheng
name: Luo, Xiaoyuan
name: Liu, Shaolei
name: Zhang, Chenxi
name: Wang, Manning
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: 3D point cloud registration is a fundamental problem in computer vision and robotics. Recently, learning-based point cloud registration methods have made great progress. However, these methods are sensitive to outliers, which lead to more incorrect correspondences. In this paper, we propose a novel deep graph matching-based framework for point cloud registration. Specifically, we first transform point clouds into graphs and extract deep features for each point. Then, we develop a module based on deep graph matching to calculate a soft correspondence matrix. By using graph matching, not only the local geometry of each point but also its structure and topology in a larger range are considered in establishing correspondences, so that more correct correspondences are found. We train the network with a loss directly defined on the correspondences, and in the test stage the soft correspondences are transformed into hard one-to-one correspondences so that registration can be performed by a correspondence-based solver. Furthermore, we introduce a transformer-based method to generate edges for graph construction, which further improves the quality of the correspondences. Extensive experiments on object-level and scene-level benchmark datasets show that the proposed method achieves state-of-the-art performance. The code is available at: \href{https://github.com/fukexue/RGM}{https://github.com/fukexue/RGM}.
description: accepted by TPAMI 2022. arXiv admin note: substantial text overlap with arXiv:2103.04256
VAFB-1985-22: Subject: Results of Archaeological Surface Survey for the V-33 Security Fence and Parking Lot Extension, Southern Vandenberg Air Force Base, CA
Creators: name: R. O. Gibson
Year: 1985

description: This document is a letter report outlining survey results associated with the V33 project. Based on an archaeological surface survey and a literature review for the area, no significant archaeological/cultural resources were identified in the V-33 project area. However, because of the proximity of SBA-1686 and the occurrence of buried and isolated cultural artifacts in the general vicinity, it is recommended that archaeological monitoring accompany brush removal and all excavation into the native soil.
UHECR and GRB neutrinos: an incomplete revolution?
Creators: name: Fargion, Daniele
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: At highest energy edges Ultra High Energy Cosmic Ray, (UHECR) and PeVs neutrino (UHE neutrino), should soon offer new exciting astronomy. The fast and somehow contradictory growth of hundred of antagonist models shows the explosive vitality of those new astronomy frontiers. No conclusive understanding on the UHECR and UHE neutrino source are at hand. The earliest expectation of GRBs (as a one shoot Fireball model) as the main (UHE neutrino) sources has been rejected. The source of UHECR as the expected GZK ones within our Super-Galactic Plane (within few tens Mpc) it has been quite disproved. However alternative models on GRB (as the long life precessing Jets) and the new updated records by AUGER, TA, ICECUBE are offering nevertheless partial understanding and early hint for point source correlations along our galaxy and toward Cen A, the nearest extragalactic AGN.
description: 11 pages, 1 figure
IV Estimation of Spatial Dynamic Panels with Interactive Effects: Large Sample
Creators: name: Cui, Guowei
name: Sarafidis, Vasilis
name: Yamagata, Takashi
Publisher: name: Monash University
Year: 2022
Subjects: Econometric and statistical methods
Econometrics not elsewhere classified

description: The present paper develops a new Instrumental Variables (IV) estimator for spatial, dynamic panel data models with interactive effects under large N and T asymptotics. For this class of models, the only approaches available in the literature are based on quasi-maximum likelihood estimation. The approach put forward in this paper is appealing from both a theoretical and a practical point of view for a number of reasons. Firstly, the proposed IV estimator is linear in the parameters of interest and it is computationally inexpensive. Secondly, the IV estimator is free from asymptotic bias. In contrast, existing ML estimators suffer from incidental parameter bias, depending on the magnitude of unknown parameters. Thirdly, the IV estimator retains the attractive feature of Method of Moments estimation in that it can accommodate endogenous regressors, so long as external exogenous instruments are available. The IV estimator is consistent and asymptotically normal as N, T → ∞, with N/T^2 → 0 and T /N^2 → 0. The proposed methodology is employed to study the determinants of risk attitude of banking institutions. The results of our analysis provide evidence that the more risksensitive capital regulation that was introduced by the Basel III framework in 2011 has succeeded in influencing banks' behaviour in a substantial manner.
Competing Relaxation Channels in Continuously Polydisperse Fluids: A Mode-Coupling Study
Creators: name: Laudicina, Corentin C. L.
name: Pihlajamaa, Ilian
name: Janssen, Liesbeth M. C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Systems with a high degree of size polydispersity are becoming standard in the computational study of deeply supercooled liquids. In this work we perform a systematic analysis of continuously polydisperse fluids as a function of the degree of polydispersity within the framework of the Mode-Coupling Theory of the glass transition (MCT). Our results show that a high degree of polydispersity tends to stabilize the liquid phase against vitrification, the magnitude of which depends on the shape of the polydispersity distribution. Further, we report on a separation between the localization lengths of the smallest and largest particles. A diameter-resolved analysis of the intermediate scattering functions reveals that this separation significantly stretches the relaxation patterns, which we quantitatively study by an analysis of the dynamical exponents predicted by the theory. Our observations have strong implications for our understanding of the nature of dynamical heterogeneities and localization lengths in continuously polydisperse systems. These results suggest that the dynamics of the smallest particles is of central importance to understand structural relaxation of continuously size polydisperse fluids, already in the mildly supercooled regime where MCT is usually applicable.
description: 12 pages, 13 figures. Replaced with published version
VAFB-1985-23: Archaeological and Geomorphological Investigations of SBA-1010 and Nearby Areas, Vandenberg Air Force Base, Santa Barbara County, California
Creators: name: URS Corporation
Year: 1985

description: This document describes a Phase I archaeological investigation conducted at CA-SBA-1010 and its immediate environs. SBA-1010 (Barka Slough) is a deeply stratified archaeological site buried in the south bank of San Antonio Creek, a major watercourse in VAFB. The project was primarily designed to determine whether cultural resources would be adversely affected if Santa Barbara County rip-rapped San Antonio Creek to prevent future erosion of Highway S-20. The project focused upon defining the boundaries of SBA-1010 and determining whether other sites are located along the creek channel. Methods used included the visual examination of vertical creekbank exposures and the excavation of 12 auger bores in areas thought to contain buried deposits associated with SBA-1010.

The investigation successfully delimited the linear extent of SBA-1010 within the project area and located a previously undiscovered site eroding out of the northern creekbank. This site, provisionally designated as URS-1, yielded a biface, several chert flakes, and few fragments of marine shell. SBA-1010 was found to extend into an area that would be directly disturbed by rip-rap construction. To avoid extensive impacts, the county has dropped from further consideration all construction options that would directly affect intact portions of SBA-1010 and URS-1.
Real-time phase-reference monitoring of a quasi-optimal coherent-state receiver
Creators: name: Bina, Matteo
name: Allevi, Alessia
name: Bondani, Maria
name: Olivares, Stefano
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Kennedy-like receiver is a quasi-optimal receiver employed in binary phase-shift-keyed communication schemes with coherent states. It is based on the interference of the two signals encoding the message with a reference local oscillator and on/off photodetection. We show both theoretically and experimentally that it is possible to extract useful information about the phase reference by Bayesian processing of the very same data sample used to discriminate the signals shot by shot. We demonstrate that the minimum uncertainty in phase estimation, given by the inverse of the Fisher information associated with the statistics of the collected data, can be achieved. We also numerically and experimentally investigate the performances of our phase-estimation method in the presence of phase noise, when either on/off or photon-number resolving detectors are employed.
description: 5 pages, 6 figures
Additional file 1 of A study protocol for a predictive algorithm to assess population-based premature mortality risk: Premature Mortality Population Risk Tool (PreMPoRT)
Creators: name: Rosella, Laura C.
name: O’Neill, Meghan
name: Fisher, Stacey
name: Hurst, Mackenzie
name: Diemert, Lori
name: Kornas, Kathy
name: Hong, Andy
name: Manuel, Douglas G.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology

description: Additional file 1. Title: Lifestyle risk factor questions from the Canadian Community Health Survey. Description: Canadian Community Health Survey questions and response options that are used to create the summary health behavior variables.
Interface-resolved direct numerical simulation of the erosion of a sediment bed sheared by laminar channel flow
Creators: name: Kidanemariam, Aman G.
name: Uhlmann, Markus
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A numerical method based upon the immersed boundary technique for the fluid-solid coupling and on a soft-sphere approach for solid-solid contact is used to perform direct numerical simulation of the flow-induced motion of a thick bed of spherical particles in a horizontal plane channel. The collision model features a normal force component with a spring and a damper, as well as a damping tangential component, limited by a Coulomb friction law. The standard test case of a single particle colliding perpendicularly with a horizontal wall in a viscous fluid is simulated over a broad range of Stokes numbers, yielding values of the effective restitution coefficient in close agreement with experimental data. The case of bedload particle transport by laminar channel flow is simulated for 24 different parameter values covering a broad range of the Shields number. Comparison of the present results with reference data from the experiment of Aussillous et al. (J. Fluid Mech. 2013) yields excellent agreement. It is confirmed that the particle flow rate varies with the third power of the Shields number once the known threshold value is exceeded. The present data suggests that the thickness of the mobile particle layer (normalized with the height of the clear fluid region) increases with the square of the normalized fluid flow rate.
description: accepted for publication in Int. J. Multiphase Flow, more data available at http://www.ifh.kit.edu/dns_data/particles/bedload/
Additional file 1 of Pharmacovigilance of suspected or confirmed therapeutic ineffectiveness of artemisinin-based combination therapy: extent, associated factors, challenges and solutions to reporting
Creators: name: Kiguba, Ronald
name: Ndagije, Helen Byomire
name: Nambasa, Victoria
name: Manirakiza, Leonard
name: Kirabira, Elijah
name: Serwanga, Allan
name: Olsson, Sten
name: Speybroeck, Niko
name: Mukonzo, Jackson
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer

description: Additional file 1: File S1. Study Questionnaire.
title: Examining social class mobility and career trajectories of working-class musicians
Creators: name: Griffioen, Keith
Publisher: name: University of Glasgow
Year: 2024

description: This research examined class mobility and career trajectories of lower-income, working-class (LIWC) musicians. The aim of the study was to identify in what ways LIWC musicians are challenged when attempting to establish themselves and what factors are necessary for success. Research regarding LIWC musicians exists primarily in relation to popular music rather than multiple genres with a tendency to focus upon the importance of musical participation and access rather than lived experiences of musicians themselves. This study contributes a fresh perspective to music and music education research as the data was exclusively gathered from the memories of eight people, all originally LIWC, who are or were musicians. Coming from diverse backgrounds and locations, each established successful careers and experienced class mobility, some in the musical field and others elsewhere.
This is an empirical study applying a constructivist paradigm framed by Pierre Bourdieu’s theory of social reproduction and feminist intersectionality theory. Autobiography, a branch of narrative inquiry, was the chosen methodological approach and data was collected via one-to-one semi-structured interviews and letter writing. The data was analysed using Clandinin and Connelly’s (2000) Three-Dimensional Space approach.
The study found most participants experienced challenges due to initial habitus and capital deficits. However, participants focused on performance careers endured far greater challenges than those not striving for a professional career. The sharp divide found in habitus and cultural capital was not quite as evident with social capital. The study also found LIWC musicians struggled to establish themselves not only due to social distance from the centre of the field but also geographical distance. Challenges with social reproduction were compounded for the women participants as they experienced sexism in different ways depending upon their generation. Such challenges led to self-doubt experienced by all but one of the participants, and this was again divided by career goals. These resulted from internal doubt as well as external criticism and treatment. To become successful, all the participants required help through mentorship from others established in the field. A second factor for success was retaining aspects of an LIWC upbringing and applying its work ethic. These factors had the greatest impact upon career trajectories and class mobility.
Using Earth to Search for Long-Range Spin-Velocity Interactions
Creators: name: Clayburn, Nathan B.
name: Hunter, Larry R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Precision measurements of the possible coupling of spin to other scalars, vectors and pseudovectors has proven to be a sensitive way to search for new particle physics beyond the standard model. Indeed, in addition to searching for exotic spin-spin interactions, studies have been undertaken to look for couplings of spin to gravity, the relative velocity between particles, and preferred directions. Several laboratory experiments have established upper bounds on the energy associated with various fermion spin-orientations relative to Earth. Here, we combine these results with a model of Earth in order to investigate the possible long-range spin-velocity interactions associated with the exchange of ultralight ($m_{z'}<1$ neV) or massless scalar or vector bosons. We establish stringent bounds on the strength of these couplings between electrons, neutrons, protons and nucleons.
description: 6 pages, 1 figure, 1 table
Parallel scheduling of task trees with limited memory
Creators: name: Eyraud-Dubois, Lionel
name: Marchal, Loris
name: Sinnen, Oliver
name: Vivien, Frédéric
Publisher: name: arXiv
Year: 2014
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: This paper investigates the execution of tree-shaped task graphs using multiple processors. Each edge of such a tree represents some large data. A task can only be executed if all input and output data fit into memory, and a data can only be removed from memory after the completion of the task that uses it as an input data. Such trees arise, for instance, in the multifrontal method of sparse matrix factorization. The peak memory needed for the processing of the entire tree depends on the execution order of the tasks. With one processor the objective of the tree traversal is to minimize the required memory. This problem was well studied and optimal polynomial algorithms were proposed. Here, we extend the problem by considering multiple processors, which is of obvious interest in the application area of matrix factorization. With multiple processors comes the additional objective to minimize the time needed to traverse the tree, i.e., to minimize the makespan. Not surprisingly, this problem proves to be much harder than the sequential one. We study the computational complexity of this problem and provide inapproximability results even for unit weight trees. We design a series of practical heuristics achieving different trade-offs between the minimization of peak memory usage and makespan. Some of these heuristics are able to process a tree while keeping the memory usage under a given memory limit. The different heuristics are evaluated in an extensive experimental evaluation using realistic trees.
description: arXiv admin note: substantial text overlap with arXiv:1210.2580
Residual entropy of the dilute Ising chain in a magnetic field
Creators: name: Panov, Yury
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The properties of the ground state of the simplest frustrated system, the dilute Ising chain in a magnetic field, are rigorously investigated over the entire range of concentrations of charged non-magnetic impurities. Analytical methods are proposed for calculating the residual entropy of frustrated states, including states at phase boundaries, which are based on the Markov property of the system and involve solving a linear optimization problem for energy and a nonlinear optimization problem for entropy. These methods allow obvious generalizations for one-dimensional pseudospin models with anisotropic interactions. We calculate the composition, entropy and magnetization for the ground state phases. We prove the absence of pseudo-transitions in the dilute Ising chain, since the residual entropy of states at phase boundaries is always higher than the entropy of adjacent phases. The concentration dependencies of magnetization at the phase boundaries are obtained, and unlike linear dependencies for adjacent phases, they have nonlinear behavior. Field-induced transitions between ground states and entropy jumps associated with them are also considered, and in particular, it is shown that the field-induced transition from an antiferromagnetic state to a frustrated one is accompanied by charge ordering.
description: 10 pages, 3 figures, 3 tables
Jeans Instability in Superfluids
Creators: name: Hason, Itamar
name: Oz, Yaron
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the effect of a gravitational field on the sound modes of superfluids. We derive an instability condition that generalizes the well known Jeans instability of the sound mode in normal fluids. We discuss potential experimental implications.
description: 9 pages, Latex
title: Interponate in der Augenmuskelchirurgie
Creators: name: Fricke, J.
name: Hedergott, A.
name: Neugebauer, A.
Publisher: name: German Medical Science GMS Publishing House
Year: 2018
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Interponate in der Augenmuskelchirurgie sind zur Muskelverlängerung indiziert, wenn erhebliche Muskelrestriktionen vorliegen, wenn bei Revisionseingriffen die Rücklagerungsstrecke ausgeschöpft ist, die Tenotomie zu unkontrolliert erscheint und Transpositionschirurgie im Bereich[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 180. Versammlung des Vereins Rheinisch-Westfälischer Augenärzte
Additional file 1 of Etiology of intellectual disability in individuals from special education schools in the south of Brazil
Creators: name: Oliveira, Luan Freitas
name: Chaves, Tiago Fernando
name: Nathacha Baretto
name: Gisele Rozone De Luca
name: Barbato, Ingrid Tremel
name: Filho, Jorge Humberto Barbato
name: Maristela Ocampos
name: Maris, Angelica Francesca
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer

description: Additional file 1: Questionnaire.
Astrophysically sourced quantum coherent photonic signals
Creators: name: Berera, Arjun
name: Calderón-Figueroa, Jaime
name: Chen, Liang
name: Kephart, Thomas W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Stimulated emission is shown to be robust in stars. Through Bose enhancement this produces quantum states of aligned, monochromatic photons similar to a laser. The probability of creating such states is computed. We show that from the solar corona such quantum states would propagate outside of the solar region and through the Solar System without decoherence. For a $1 {\rm m}^2$ detector at the distance of the Earth from the Sun we estimate rates of such quantum states in the few per second thus potentially detectable. The same process should lead to such quantum states also arriving from stars at interstellar distances.
description: 5 pages
Combined magnetic and chemical patterning for neural architectures
Creators: name: Delacour, Cécile
name: Bugnicourt, Ghislain
name: Dempsey, Nora M
name: Dumas-Bouchiat, Frédéric
name: Villard, Catherine
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: In vitro investigation of neural architectures requires cell positioning. For that purpose, micro-magnets have been developed on silicon substrates and combined with chemical patterning to attract cells to adhesive sites and keep them there during incubation. We have shown that the use of micro-magnets allows to achieve a high filling factor (~90%) of defined adhesive sites in neural networks and prevents migration of cells during growth. This approach has great potential for neural interfacing by providing accurate and time-stable coupling with integrated nanodevices.
Notions about the nature of Geometry
Creators: name: Rizos, Ioannis
name: Gkrekas, Nikolaos
Publisher: name: arXiv
Year: 2022
Subjects: subject: History and Overview (math.HO)
subject: FOS: Mathematics

description: In this paper we discuss, from a historical and philosophical point of view, a variation of the meaning of the five postulates in Euclidean Geometry and we make a short reference to D. Hilberts formalism. We examine, throughout the ages, the question what is Geometry by studying the segmentation and the unification of various geometries, been introduced by F. Kleins Erlangen Program. We concisely present three out of nine Cayley-Klein geometries and then we conclude with some didactic perspectives.
description: 20 pages, in Greek language
Priester und Gläubige mögen zu einem rechten Verständnis der hohen Würde des Priester- und Ordensstandes gelangen
Publisher: name: Herder Korrespondenz
Year: 1970

description: Herder Korrespondenz, Bd. 10 Nr. 6 (1955): Herder Korrespondenz, Band 10, Heft 6
Noncommutative martingale concentration inequalities
Creators: name: Sadeghi, Ghadir
name: Moslehian, Mohammad Sal
Publisher: name: arXiv
Year: 2014
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 46L53, Secondary 46L10, 47A30

description: We establish an Azuma type inequality under a Lipshitz condition for martingales in the framework of noncommutative probability spaces and apply it to deduce a noncommutative Heoffding inequality as well as a noncommutative McDiarmid type inequality. We also provide a noncommutative Azuma inequality for noncommutative supermartingales in which instead of a fixed upper bound for the variance we assume that the variance is bounded above by a linear function of variables. We then employ it to deduce a noncommutative Bernstein inequality and an inequality involving $L_p$-norm of the sum of a martingale difference.
description: 18 pages, to appear in Illinois J. Math
Computing Bayes: Bayesian Computation from 1763 to the 21st Century
Creators: name: Martin, Gael M.
name: Frazier, David T.
name: Robert, Christian P.
Publisher: name: Monash University
Year: 2022
Subjects: Econometric and statistical methods
Econometrics not elsewhere classified

description: The Bayesian statistical paradigm uses the language of probability to express uncertainty about the phenomena that generate observed data. Probability distributions thus characterize Bayesian inference, with the rules of probability used to transform prior probability distributions for all unknowns - models, parameters, latent variables - into posterior distributions, subsequent to the observation of data. Conducting Bayesian inference requires the evaluation of integrals in which these probability distributions appear. Bayesian computation is all about evaluating such integrals in the typical case where no analytical solution exists. This paper takes the reader on a chronological tour of Bayesian computation over the past two and a half centuries. Beginning with the one-dimensional integral first confronted by Bayes in 1763, through to recent problems in which the unknowns number in the millions, we place all computational problems into a common framework, and describe all computational methods using a common notation. The aim is to help new researchers in particular - and more generally those interested in adopting a Bayesian approach to empirical work - make sense of the plethora of computational techniques that are now on offer; understand when and why different methods are useful; and see the links that do exist, between them all.
Energy conditions for non-timelike thin shells
Creators: name: Maeda, Hideki
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study energy conditions for non-timelike thin shells in arbitrary $n(\ge 3)$ dimensions. It is shown that the induced energy-momentum tensor $t_{μν}$ on a shell $Σ$ is of the Hawking-Ellis type I if $Σ$ is spacelike and either of type I, II, or III if $Σ$ is null. Then, we derive simple equivalent representations of the standard energy conditions for $t_{μν}$. In particular, on a spacelike shell or on a null shell with non-vanishing surface current, $t_{μν}$ inevitably violates the dominant energy condition. If the surface pressure on the null shell is vanishing in addition, $t_{μν}$ is of type III and violates all the standard energy conditions. Those fully general results are obtained without imposing a spacetime symmetry and can be used in any theory of gravity. Lastly, several applications of the main results are presented in general relativity in four dimensions.
description: 35 pages, 4 figures, 2 tables; v2, title shortened, final version to appear in Classical and Quantum Gravity
A Flare Observed in Coronal, Transition Region and Helium I 10830 Å Emissions
Creators: name: Zeng, Zhicheng
name: Qiu, Jiong
name: Cao, Wenda
name: Judge, Philip G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: On June 17, 2012, we observed the evolution of a C-class flare associated with the eruption of a filament near a large sunspot in the active region NOAA 11504. We obtained high spatial resolution filtergrams using the 1.6 m New Solar Telescope at the Big Bear Solar Observatory in broad-band TiO at 706 nm (bandpass:10 Å) and He I 10830 Å narrow-band (bandpass: 0.5 Å, centered 0.25 Å to the blue). We analyze the spatio-temporal behavior of the He I 10830 Å data, which were obtained over a 90" X 90" field of view with a cadence of 10 sec. We also analyze simultaneous data from the Atmospheric Imaging Assembly and Extreme Ultraviolet Variability Experiment instruments on board the Solar Dynamics Observatory spacecraft, and data from Reuven Ramaty High Energy Solar Spectroscopic Imager and GOES spacecrafts. Non-thermal effects are ignored in this analysis. Several quantitative aspects of the data, as well as models derived using the "0D" Enthalpy-Based Thermal Evolution of Loops model (EBTEL: Klimchuk et al. 2008) code, indicate that the triplet states of the 10830 Å multiplet are populated by photoionization of chromospheric plasma followed by radiative recombination. Surprisingly, the He II 304 Å line is reasonably well matched by standard emission measure calculations, along with the C IV emission which dominates the AIA 1600 Å channel during flares. This work lends support to some of our previous work combining X-ray, EUV and UV data of flares to build models of energy transport from corona to chromosphere.
Phantom relaxation rate of the average purity evolution in random circuits due to Jordan non-Hermitian skin effect and magic sums
Creators: name: Znidaric, Marko
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Phantom relaxation is relaxation with a rate that is not given by a finite spectral gap. Studying the average purity dynamics in a staircase random Haar circuit and the spectral decomposition of a non-symmetric matrix describing the underlying Markovian evolution, we explain how that can arise out of an ordinary-looking spectrum. Crucial are alternating expansion coefficients that diverge in the thermodynamic limit due to the non-Hermitian skin effect in the matrix describing the average purity dynamics under an overall unitary evolution. The mysterious phantom relaxation emerges out of localized generalized eigenvectors describing the Jordan normal form kernel, and, independently, also out of interesting trigonometric sums due to localized true eigenvectors. All this shows that when dealing with non-Hermitian matrices it can happen that the spectrum is not the relevant object; rather, it is the pseudospectrum, or, equivalently, a delicate cancellation enabled by localized eigenvectors.
description: v2: slight title change
Additional file 1 of Longitudinal analysis of healthy colon establishes aspirin as a suppressor of cancer-related epigenetic aging
Creators: name: Noreen, Faiza
name: Chaber-Ciopinska, Anna
name: Jaroslaw Regula
name: Schär, Primo
name: Truninger, Kaspar
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Figure S1. a) Overlap of all significant differentially methylated CpGs found in aspirin users and nonusers. The non-overlapping CpGs were then defined as aspirin user specific differentially methylated CpGs (U-dmCpGs) or nonuser specific differentially methylated CpGs (Nu-dmCpGs). b) Overlap of genes affected by Nu-dmCpGs and U-dmCpGs with known differential expressed colon cancer specific tumor suppressor genes (TSGs) and oncogenes. Shown are separate overlaps for proximal and distal colon.
Topological nature of bound states in the radiation continuum
Creators: name: Zhen, Bo
name: Hsu, Chia Wei
name: Lu, Ling
name: Stone, A. Doug
name: Soljacic, Marin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Bound states in the continuum (BICs) are unusual solutions of wave equations describing light or matter: they are discrete and spatially bounded, but exist at the same energy as a continuum of states which propagate to infinity. Until recently, BICs were constructed through fine-tuning parameters in the wave equation or exploiting the separability of the wave equation due to symmetry. More recently, BICs that that are both robust and not symmetry-protected (accidental) have been predicted and experimentally realized in periodic structures; the simplest such system is a periodic dielectric slab, which also has symmetry-protected BICs. Here we show that both types of BICs in such systems are vortex centers in the polarization direction of far-field radiation. The robustness of these BICs is due to the existence of conserved and quantized topological charges, defined by the number of times the polarization vectors wind around the vortex centers. Such charges can only be generated or annihilated by making large changes in the system parameters, and then only according to strict rules, which we derive and test numerically. Our results imply that laser emission based on such states will generate vector beams.
Domain adaptation of weighted majority votes via perturbed variation-based self-labeling
Creators: name: Morvant, Emilie
Publisher: name: arXiv
Year: 2014
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In machine learning, the domain adaptation problem arrives when the test (target) and the train (source) data are generated from different distributions. A key applied issue is thus the design of algorithms able to generalize on a new distribution, for which we have no label information. We focus on learning classification models defined as a weighted majority vote over a set of real-val ued functions. In this context, Germain et al. (2013) have shown that a measure of disagreement between these functions is crucial to control. The core of this measure is a theoretical bound--the C-bound (Lacasse et al., 2007)--which involves the disagreement and leads to a well performing majority vote learning algorithm in usual non-adaptative supervised setting: MinCq. In this work, we propose a framework to extend MinCq to a domain adaptation scenario. This procedure takes advantage of the recent perturbed variation divergence between distributions proposed by Harel and Mannor (2012). Justified by a theoretical bound on the target risk of the vote, we provide to MinCq a target sample labeled thanks to a perturbed variation-based self-labeling focused on the regions where the source and target marginals appear similar. We also study the influence of our self-labeling, from which we deduce an original process for tuning the hyperparameters. Finally, our framework called PV-MinCq shows very promising results on a rotation and translation synthetic problem.