cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exploring Automatic COVID-19 Diagnosis via voice and symptoms from Crowdsourced Data
Creators: name: Han, Jing
name: Brown, Chloë
name: Chauhan, Jagmohan
name: Grammenos, Andreas
name: Hasthanasombat, Apinan
name: Spathis, Dimitris
name: Xia, Tong
name: Cicuta, Pietro
name: Mascolo, Cecilia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The development of fast and accurate screening tools, which could facilitate testing and prevent more costly clinical tests, is key to the current pandemic of COVID-19. In this context, some initial work shows promise in detecting diagnostic signals of COVID-19 from audio sounds. In this paper, we propose a voice-based framework to automatically detect individuals who have tested positive for COVID-19. We evaluate the performance of the proposed framework on a subset of data crowdsourced from our app, containing 828 samples from 343 participants. By combining voice signals and reported symptoms, an AUC of $0.79$ has been attained, with a sensitivity of $0.68$ and a specificity of $0.82$. We hope that this study opens the door to rapid, low-cost, and convenient pre-screening tools to automatically detect the disease.
description: 5 pages, 3 figures, 2 tables, Accepted for publication at ICASSP 2021
PSF reconstruction for NAOS-CONICA
Creators: name: Clénet, Yann
name: Kasper, Markus
name: Gendron, Eric
name: Fusco, Thierry
name: Rousset, Gérard
name: Gratadour, Damien
name: Lidman, Christopher
name: Marco, Olivier
name: Ageorges, Nancy
name: Egner, Sebastian
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Adaptive optics (AO) allows one to derive the point spread function (PSF) simultaneously to the science image, which is a major advantage in post-processing tasks such as astrometry/photometry or deconvolution. Based on the algorithm of \citet{veran97}, PSF reconstruction has been developed for four different AO systems so far: PUEO, ALFA, Lick-AO and Altair. A similar effort is undertaken for NAOS/VLT in a collaboration between the group PHASE (Onera and Observatoire de Paris/LESIA) and ESO. In this paper, we first introduce two new algorithms that prevent the use of the so-called "$U\_{ij}$ functions" to: (1) avoid the storage of a large amount of data (for both new algorithms), (2) shorten the PSF reconstruction computation time (for one of the two) and (3) provide an estimation of the PSF variability (for the other one). We then identify and explain issues in the exploitation of real-time Shack-Hartmann (SH) data for PSF reconstruction, emphasising the large impact of thresholding in the accuracy of the phase residual estimation. Finally, we present the data provided by the NAOS real-time computer (RTC) to reconstruct PSF ({\em (1)} the data presently available, {\em (2)} two NAOS software modifications that would provide new data to increase the accuracy of the PSF reconstruction and {\em (3)} the tests of these modifications) and the PSF reconstruction algorithms we are developing for NAOS on that basis.
description: 12 pages & 13 figures. To be published in the proceedings of the SPIE conference Advances in Adaptive Optics - Astronomical Telescopes & Instrumentation, 24-31 May 2006, Orlando
Physarum machine: Implementation of Kolmogorov-Uspensky machine in biological substrat
Creators: name: Adamatzky, Andrew
Publisher: name: arXiv
Year: 2007
Subjects: subject: Hardware Architecture (cs.AR)
subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences
subject: F.1.1

description: We implement Kolmogorov-Uspensky machine on a plasmodium of true slime mold {\em Physarum polycephalum}. We provide experimental findings on realization of the machine instructions, illustrate basic operations, and elements of programming.
description: First presented at Los Alamos "Unconventional Computation 2007" conference, Santa Fe, NM, 20-23 March 2007
Additional file 1 of Key challenges in prehospital and emergency care in Indonesia and Malaysia: a survey of frontline clinicians
Creators: name: Tokita, Akio
name: Nunokawa, Hanako
name: Liu, Keibun
name: Iwamoto, Yuta
name: Sonoo, Tomohiro
name: Hara, Konan
name: Nakajima, Mikio
name: Fukaguchi, Kiyomitsu
name: Takeda, Takanori
name: Sanip, Amirudin
name: Juzar, Dafsah A.
name: Gurjeet Singh, a/l Harvendhar Singh
name: Condro, Lukito
name: Tobing, Monalisa
name: Abu Hasan, Muhammad Abdus-Syakur bin
name: Nik Abdul Rahman, Nik Hisamuddin
name: Mahisa, Orizanov
name: Aviesena Zairinal, Ramdinal
name: Ramli, Mohd Khairulizwan bin
name: Mohd Nor, Mohd Afiq
name: Goto, Tadahiro
name: Zakaria, Mohd Idzwan bin
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file1 (DOCX 420 KB)
Unravelling Temporal Variability in Saturn's Spiral Density Waves: Results and Predictions
Creators: name: Tiscareno, Matthew S.
name: Nicholson, Philip D.
name: Burns, Joseph A.
name: Hedman, Matthew M.
name: Porco, Carolyn C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe a model that accounts for the complex morphology of spiral density waves raised in Saturn's rings by the co-orbital satellites, Janus and Epimetheus. Our model may be corroborated by future Cassini observations of these time-variable wave patterns.
description: 9 pages, 5 figures; In press at Astrophysical Journal Letters
Supplementary document for Halo effect in high-dynamic-range mini-LED backlit LCDs - 4935452.pdf
Creators: name: Wu, Shin-Tson
name: Hsiang, En-Lin
name: Yang, Qian
name: He, Ziqian
name: Zou, Junyu
Publisher: name: Optica Publishing Group
Year: 2020
Subjects: Uncategorized

description: Supplement 1
CRNPRED: Highly Accurate Prediction of One-dimensional Protein Structures by Large-scale Critical Random Networks
Creators: name: Kinjo, Akira R.
name: Nishikawa, Ken
Publisher: name: arXiv
Year: 2006
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: Background: One-dimensional protein structures such as secondary structures or contact numbers are useful for three-dimensional structure prediction and helpful for intuitive understanding of the sequence-structure relationship. Accurate prediction methods will serve as a basis for these and other purposes. Results: We implemented a program CRNPRED which predicts secondary structures, contact numbers and residue-wise contact orders. This program is based on a novel machine learning scheme called critical random networks. Unlike most conventional one-dimensional structure prediction methods which are based on local windows of an amino acid sequence, CRNPRED takes into account the whole sequence. CRNPRED achieves, on average per chain, Q3 = 81% for secondary structure prediction, and correlation coefficients of 0.75 and 0.61 for contact number and residue-wise contact order predictions, respectively. Conclusion: CRNPRED will be a useful tool for computational as well as experimental biologists who need accurate one-dimensional protein structure predictions.
description: 10 pages, 1 figure, 2 tables
MOESM4 of Exercise therapy improves eGFR, and reduces blood pressure and BMI in non-dialysis CKD patients: evidence from a meta-analysis
Creators: name: Zhang, Lijun
name: Wang, Yangyang
name: Xiong, Lianlian
name: Luo, Yanfang
name: Huang, Zhijun
name: Yi, Bin
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Marine Biology

description: Additional file 4: Fig. S3. Funnel plot of between-groups analysis for SBP.
Additional file 1 of Evaluating the effectiveness of a multi-component lifestyle therapy program versus psychological therapy for managing mood disorders (HARMON-E): protocol of a randomised non-inferiority trial
Creators: name: Davis, Jessica A
name: Connolly, Madeleine L
name: Young, Lauren M
name: Turner, Megan
name: Mahoney, Sophie
name: Saunders, Dean
name: John, Tayla
name: Fiddes, Rachel
name: Bryan, Marita
name: Berk, Michael
name: Davids, Indee
name: Barrand, Sanna
name: Jacka, Felice N
name: Murray, Greg
name: McDonald, Eileen
name: Chatterton, Mary Lou
name: Kaylor-Hughes, Catherine
name: Mihalopoulos, Catherine
name: Yung, Alison
name: Thomas, Neil
name: Osborne, Richard
name: Iyer, Ravi
name: Meyer, Denny
name: Radovic, Lara
name: Jabeen, Tabinda
name: Marx, Wolfgang
name: O’Shea, Melissa
name: Mundell, Niamh L
name: George, Elena S
name: Rocks, Tetyana
name: Ruusunen, Anu
name: Russell, Samantha
name: O’Neil, Adrienne
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Mental Health

description: Supplementary Material 1.
Gauge symmetry breaking in orbifold model building
Creators: name: Trapletti, Michele
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the gauge symmetry breaking mechanism due to orbifold projections in orbifold model building. We explicitly show the existence of a scale of breaking if such a symmetry breaking is due to freely-acting orbifold operators only, i.e. in case the breaking is realized non-locally in the internal space. We show that such a scale is related to the compactification moduli only, and that there are no extra continuous parameters, at least in semirealistic models with N=1 SUSY in four dimensions. In this sense, the mechanism is peculiarly different from the standard Higgs (or Hosotani) symmetry breaking mechanism. We show that the mechanism also differs from that present in standard orbifold models where, even in presence of discrete Wilson lines, a scale of breaking is generically missing, since the breaking is localized in specific points in the internal space. We review a set of background geometries where the described non-local breaking is realized, both in the case of two and six extra dimensions. In the latter case, relevant in string model building, we consider both heterotic and open string compactifications.
description: 17 pages, 6 figures, published on Mod. Phys. Lett. A
Moduli stabilization with positive vacuum energy
Creators: name: Dudas, E.
name: Mambrini, Y.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the effect of anomalous U(1) gauge groups in string theory compactification with fluxes. We find that, in a gauge invariant formulation, consistent AdS vacua appear breaking spontaneously supergravity. Non vanishing D-terms from the anomalous symmetry act as an uplifting potential and could allow for de Sitter vacua. However, we show that in this case the gravitino is generically (but not always) much heavier than the electroweak scale. We show that alternative uplifting scheme based on corrections to the Kahler potential can be compatible with a gravitino mass in the TeV range.
description: 20 pages, 1 figure
The Generalized Liquid Drop Model Alpha-Decay Formula: Predictability Analysis and Super-Heavy Element Alpha Half-Lives
Creators: name: Dasgupta-Schubert, Nabanita
name: Reyes, Michael A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The predictive accuracy of the generalized liquid drop model (GLDM) formula for alpha decay half-lives has been investigated in a detailed manner and a variant of the formula with improved coefficients is proposed. The method employs the experimental alpha half-lives of the well-known alpha standards (REFERENCE) to obtain the coefficients of the analytical formula using the experimental Qalpha values (the DSR-E formula), as well as the finite range droplet model (FRDM) derived Qalpha values (the FRDMFRDM formula). The predictive accuracy of these formulae were checked against the experimental alpha half-lives of an independent set of nuclei (TEST) that span approximately the same Z,A region as the standards and possess reliable alpha spectroscopic data, and were found to yield good results for the DSR-E formula but not for the FRDM-FRDM formula. The two formulae were used to obtain the alpha half-lives of super-heavy (SHE) and heavy nuclides where the relative accuracy was found to markedly improve for the FRDM-FRDM, which corroborates the appropriateness of the FRDM masses and the GLDM prescription for high Z,A nuclides. Further improvement resulted, especially for the FRDM-FRDM formula, after a simple linear optimization over the calculated and experimental half-lives of TEST was used to re-calculate the half-lives of the SHE and heavy nuclides. The advantage of this optimization was that it required no recalculation of the coefficients of the basic DSR-E or FRDM-FRDM formulae. The halflives for 324 medium-mass to super-heavy alpha decaying nuclides, calculated using these formulae and the comparison with experimental half-lives, are presented.
description: 61 pages, 6 figures, PDF file, to appear in Atomic Data and Nuclear Data Tables
Correlations Between Lag, Luminosity, and Duration in Gamma-ray Burst Pulses
Creators: name: Hakkila, Jon
name: Giblin, Timothy W.
name: Norris, Jay P.
name: Fragile, P. Chris
name: Bonnell, Jerry T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We derive a new peak lag vs. peak luminosity relation in gamma-ray burst (GRB) pulses. We demonstrate conclusively that GRB spectral lags are pulse rather than burst properties and show how the lag vs. luminosity relation determined from CCF measurements of burst properties is essentially just a rough measure of this newly derived relation for individual pulses. We further show that most GRB pulses have correlated properties: short-lag pulses have shorter durations, are more luminous, and are harder within a burst than long-lag pulses. We also uncover a new pulse duration vs. pulse peak luminosity relation, and indicate that long-lag pulses often precede short-lag pulses. Although most pulse behaviors are supportive of internal shocks (including long-lag pulses), we identify some pulse shapes that could result from external shocks.
description: 14 pages, 4 figures, 1 table; accepted for publication in Astrophysical Journal Letters
Additional file 1 of Predicting protein inter-residue contacts using composite likelihood maximization and deep learning
Creators: name: Zhang, Haicang
name: Zhang, Qi
name: Ju, Fusong
name: Zhu, Jianwei
name: Gao, Yujuan
name: Xie, Ziwei
name: Deng, Minghua
name: Sun, Shiwei
name: Zheng, Wei-Mou
name: Bu, Dongbo
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified

description: The additional results on the performance of clmDCA. Figure S1 shows a case study of clmDCA. Figure S2 shows the comparison of the quality of the structures built using predicted contacts. Figure S3 shows the run time of clmDCA. Table S1 shows the time complexity for calculating likelihood function. Table S2 shows the performance of 3-order clmDCA. (PDF 721 kb)
Additional file 1 of Measuring NOx during periodic technical inspection of diesel vehicles
Creators: name: Franzetti, Jacopo
name: Selleri, Tommaso
name: Fonseca González, Natalia
name: Melas, Anastasios
name: Gioria, Roberto
name: Suarez-Bertoa, Ricardo
Publisher: name: figshare
Year: 2024
Subjects: subject: Biochemistry
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Mental Health

description: Supplementary material 1.
Coherent Dynamics of Floquet-Bloch States in Monolayer WS2 Reveals Fast Adiabatic Switching
Creators: name: Earl, S. K.
name: Conway, M. A.
name: Muir, J. B
name: Wurdack, M.
name: Ostrovskaya, E. A.
name: Tollerud, J. O.
name: Davis, J. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Floquet engineering offers a path to optically-controlled materials, but experimental implementations have frequently relied on femtosecond pulses to achieve the high peak fields required to maximise interactions and obtain a measurable response. The Floquet formalism, however, is based on a continuous, periodic drive. Here we use femtosecond laser pulses to drive the optical Stark effect, a simple realization of Floquet engineering, in monolayer WS2. By monitoring the coherent evolution of the free-induction decay, we show that the system evolves adiabatically, and that the finite duration of the pulses does not introduce any effects beyond Floquet theory. Furthermore, we demonstrate that the induced energy shift follows a linear dependence on instantaneous intensity, even for ultrafast driving fields of fewer than 15 optical cycles.
Many-body localization in tilted and harmonic potentials
Creators: name: Yao, Ruixiao
name: Chanda, Titas
name: Zakrzewski, Jakub
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss nonergodic dynamics of interacting spinless fermions in a tilted optical lattice as modeled by XXZ spin chain in magnetic (or electric) field changing linearly across the chain. The time dynamics is studied using exact propagation for small chains and matrix product states techniques for larger system sizes. We consider both the initial Néel separable state as well as the quantum quench scenario in which the initial state may be significantly entangled. We show that the entanglement dynamics is significantly different in both cases. In the former a rapid initial growth is followed by a saturation for sufficiently large tilt, $F$. In the latter case the dynamics seems to be dominated by pair tunneling and the effective tunneling rate scales as $1/F^2$. In the presence of an additional harmonic potential the imbalance is found to be entirely determined by a local effective tilt, $F_{\text{loc}}$, the entanglement entropy growth is modulated with frequency that follows $1/F_{loc}^2$ scaling first but at long time the dynamics is determined rather by the curvature of the harmonic potential. Only for large tilts or sufficiently large curvatures, corresponding to the deeply localized regime, we find the logarithmic entanglement growth for Néel initial state. The same curvature determines long-time imbalance for large $F$ which reveals strong revival phenomena associated with the manifold of equally spaced states, degenerate in the absence of the harmonic potential.
description: significantly revised version
Spin-orbit torques in strained PtMnSb from first principles
Creators: name: Freimuth, Frank
name: Blügel, Stefan
name: Mokrousov, Yuriy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We compute spin-orbit torques (SOTs) in strained PtMnSb from first principles. We consider both tetragonal strain and shear strain. We find a strong linear dependence of the field-like SOTs on these strains, while the antidamping SOT is only moderately sensitive to shear strain and even insensitive to tetragonal strain. We also study the dependence of the SOT on the magnetization direction. In order to obtain analytical expressions suitable for fitting our numerical \textit{ab-initio} results we derive a general expansion of the SOT in terms of all response tensors that are allowed by crystal symmetry. Our expansion includes also higher-order terms beyond the usually considered lowest order. We find that the dependence on the strain is much smaller for the higher-order terms than for the lowest order terms. In order to judge the sensitivity of the SOT on the exchange correlation potential we compute the SOT in both GGA and LDA. We find that the higher-order terms depend significantly on the exchange-correlation potential, while the lowest order terms are insensitive to it. Since the higher-order terms are small in comparison to the lowest order terms the total SOT is insensitive to the exchange correlation potential in strained PtMnSb.
Innovationen: Das Unerwartete realisieren
Creators: name: Georgy, Ursula
Publisher: name: Humboldt-Universität zu Berlin
Year: 2019
Subjects: subject: Öffentliche Bibliothek
subject: Neue Technologie
subject: Kundenzufriedenheit
subject: Kano-Modell
subject: Dienstleistung
subject: Innovation
subject: Verlustaversion
subject: Zukunft
subject: 020 Bibliotheks- und Informationswissenschaften

description: Innovationen erfüllen aus der Sicht eines Innovators/Anbieters meistens einen speziellen Zweck, der vom Anbieter vorgegeben wird. Doch gibt es immer wieder Innovationen, die weit mehr als genau diesen Zweck erfüllen bzw. einen ganz anderen Zweck erfüllen. Anbieter von Produkten und Dienstleistungen müssen sich daher fragen, mit welcher „Aufgabe“ beauftragt der Kunde ein Angebot? Die Beauftragung mit einer (anderen) Aufgabe erfolgt häufig unbewusst und das Unternehmen erfährt davon nichts. So wurde Starbucks zu Zeiten von kostenpflichtigem WLAN häufig damit beauftragt, kostenfrei im Internet recherchieren und in Ruhe dort arbeiten zu können. Der Auftrag war häufig nicht primär der Genuss eines Getränks. Dieses wurde konsumiert, um Starbucks mit einer anderen Aufgabe beauftragen zu können. Ziel von Innovationen – und das gilt auch für Öffentliche Bibliotheken – muss es also künftig verstärkt sein, herauszufinden, womit der (potenzielle) Kunde Einrichtungen, Produkte und Dienstleistungen beauftragt bzw. beauftragen würde, um auch 2030 eine Daseinsberechtigung zu haben. Der Beitrag orientiert sich u. a. an den Ausführungen von Christensen (2017) zu dem Thema.
Molecular dynamics study on planar clustering of xenon in UO2
Creators: name: Geng, H. Y.
name: Chen, Y.
name: Kaneta, Y.
name: Kinoshita, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Interatomic potentials of uranium dioxide are investigated on their applicability to model structural stabilities beyond fluorite phase by comparing with ab-initio results. A high pressure cotunnite phase and loosely stacking virtual crystal are involved in order to get a primary confidence for large-scale deformation modelings of UO2 under irradiation damages. The behavior of Xe atoms in UO2 fuel is studied with molecular dynamics simulations. Besides the ground state bubble geometry, we find that a planar distribution is also (meta-) stable for xenon under thermodynamic perturbations. The Xe atoms with a planar configuration are in a liquid state at a typical reactor temperature of 1000 K, which presents a modulated layer-structure near the interface with solid UO2. A planar defects loop remains after these Xe atoms are released out.
description: 16 pages, 11 figures. Journal of Alloys and Compounds (accepted)
Additional file 1 of Effects of cognitive training under hypoxia on cognitive proficiency and neuroplasticity in remitted patients with mood disorders and healthy individuals: ALTIBRAIN study protocol for a randomized controlled trial
Creators: name: Miskowiak, Kamilla Woznica
name: Damgaard, Viktoria
name: Schandorff, Johanna Mariegaard
name: Macoveanu, Julian
name: Knudsen, Gitte Moos
name: Johansen, Annette
name: Plaven-Sigray, Pontus
name: Svarer, Claus
name: Fussing, Caroline Bruun
name: Cramer, Katrine
name: Jørgensen, Martin Balslev
name: Kessing, Lars Vedel
name: Ehrenreich, Hannelore
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Mental Health

description: Additional file 1: Appendix A. SPIRIT 2013 Checklist: Recommended items to address in a clinical trial protocol and related documents.
Comment on: Non-perturbative finite T broadening of the rho meson and dilepton emission in heavy ion-collisions (by J. Ruppert and T. Renk Phys. Rev. C71 (2005) 064903; nucl-th/0412047
Creators: name: Riek, Felix
name: van Hees, Hendrik
name: Knoll, Jörn
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In this comment we point out several problems concerning kinematical singularities which are encountered in the calculation of the dilepton rates in {Ruppert:2004yg}. We also comment on the method introduced in {vanHees:2000bp} and further used in refs. {Riek:2004kx,Renk:2006dt,Renk:2006ax,Ruppert:2004yg}
description: 2 pages, 3 figures
Δημιουργία Μοντέλων Πρόβλεψης Μηνιαίας Κατανάλωσης Οικιακών Καταναλωτών με χρήση Τεχνικών Μηχανικής Μάθησης
Creators: name: Δημητρίου, Ιωάννης Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Μηχανική Μάθηση
Εξόρυξη Γνώσης
Καταναλωτές Χαμηλής Τάσης
Machine Learning
Data Mining
Low Voltage Consumers

description: Στην παρούσα διπλωματική εργασία χρησιμοποιούνται αλγόριθμοι Μηχανικής Μάθησης (όπως είναι οι Random Forests, GBM, Linear Regression και SVM) με σκοπό την μηνιαία πρόβλεψη της κατανάλωσης ηλεκτρικής ενέργειας από οικιακούς καταναλωτές. Για την πειραματική διαδικασία χρησιμοποιήθηκαν δεδομένα που αφορούν εγκαταστάσεις της Γερμανίας και περιλαμβάνουν τα χαρακτηριστικά των νοικοκυριών, καθώς και τις μηνιαίες καταναλώσεις τους σε διάφορες κατηγορίες/δραστηριότητες. Το πρώτο σετ πειραμάτων αφορά την επιλογή των βέλτιστων παραμέτρων των αλγορίθμων μηχανικής μάθησης για τα συγκεκριμένα δεδομένα και την επιλογή του αλγορίθμου που ανταποκρίνεται καλύτερα στο πρόβλημα. Όλα τα αποτελέσματα αξιολογούνται χρησιμοποιώντας ποικίλες μετρικές, οι οποίες θεωρούνται αξιόπιστες για την εξαγωγή ασφαλών συμπερασμάτων. Στη συνέχεια, πραγματοποιήθηκε ένα δεύτερο σετ πειραμάτων με χρήση διαφορετικών διανυσμάτων εισόδου, ώστε να αξιολογηθεί η επίδρασή τους στην αποδοτικότητα του μοντέλου. Ο σκοπός ήταν να βρεθούν τα χαρακτηριστικά που είναι τα σημαντικότερα για κάθε κατηγορία κατανάλωσης, ώστε δημιουργηθούν πιο απλά μοντέλα και να επιτευχθεί καλύτερη γενίκευση για μελλοντικές χρήσεις. Από τα αποτελέσματα φάνηκε πως τα παραπάνω μπορούν να επιτευχθούν μέχρι ενός σημείου, με μικρό κόστος στην ικανότητα πρόβλεψης των μοντέλων, ενώ σε κάποιες κατηγορίες τα διανύσματα με μειωμένα χαρακτηριστικά μπορούν να αποδώσουν καλύτερα.
description: In this diploma thesis, Machine Learning algorithms (such as Random Forests, GBM, Linear Regression and SVM) are used to provide a monthly forecast of electricity consumption by household consumers. For the experimental procedure, a dataset containing installations from Germany was provided. This dataset included installation characteristics, as well as their monthly consumption in different categories/activities. The first set of experiments involve choosing the optimal algorithm parameters for the available dataset and selecting the algorithm that produces the best prediction results. All the prediction results are evaluated based on various assessment metrics, that are believed to be reliable in delivering safe conclusions. Next, a set of experiments using a different number of attributes to evaluate their effect on model efficiency were realized. The aim was to find the most important features for each consumption category, in order to create simpler models and to achieve better model generalization for future uses. The experimental results showed that the above can be achieved up to some point at a low cost in predicting models, while in some categories fewer features can deliver better results.
description: Σε συνεργασία με: Λογιστικής και Χρηματοοικονομικής (Πανεπιστήμιο Μακεδονίας)
Perfect difference sets constructed from Sidon sets
Creators: name: Cilleruelo, Javier
name: Nathanson, Melvyn B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11B13, 11B34, 11B05, 11A07, 11A41

description: A set A of positive integers is called a perfect difference set if every nonzero integer has an unique representation as the difference of two elements of A. We construct dense perfect difference sets from dense Sidon sets. As a consequence of this new approach, we prove that there exists a perfect difference set A such that A(x) >> x^{\sqrt{2}-1-o(1)}. We also prove that there exists a perfect difference set A such that limsup_{x\to \infty}A(x)/\sqrt x\geq 1/\sqrt 2.
description: 11 pages, LaTex
Sequential vessel segmentation via deep channel attention network
Creators: name: Hao, Dongdong
name: Ding, Song
name: Qiu, Linwei
name: Lv, Yisong
name: Fei, Baowei
name: Zhu, Yueqi
name: Qin, Binjie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Medical Physics (physics.med-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: This paper develops a novel encoder-decoder deep network architecture which exploits the several contextual frames of 2D+t sequential images in a sliding window centered at current frame to segment 2D vessel masks from the current frame. The architecture is equipped with temporal-spatial feature extraction in encoder stage, feature fusion in skip connection layers and channel attention mechanism in decoder stage. In the encoder stage, a series of 3D convolutional layers are employed to hierarchically extract temporal-spatial features. Skip connection layers subsequently fuse the temporal-spatial feature maps and deliver them to the corresponding decoder stages. To efficiently discriminate vessel features from the complex and noisy backgrounds in the XCA images, the decoder stage effectively utilizes channel attention blocks to refine the intermediate feature maps from skip connection layers for subsequently decoding the refined features in 2D ways to produce the segmented vessel masks. Furthermore, Dice loss function is implemented to train the proposed deep network in order to tackle the class imbalance problem in the XCA data due to the wide distribution of complex background artifacts. Extensive experiments by comparing our method with other state-of-the-art algorithms demonstrate the proposed method's superior performance over other methods in terms of the quantitative metrics and visual validation. The source codes are at https://github.com/Binjie-Qin/SVS-net
description: 14
MOESM5 of Exercise therapy improves eGFR, and reduces blood pressure and BMI in non-dialysis CKD patients: evidence from a meta-analysis
Creators: name: Zhang, Lijun
name: Wang, Yangyang
name: Xiong, Lianlian
name: Luo, Yanfang
name: Huang, Zhijun
name: Yi, Bin
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Marine Biology

description: Additional file 5: Fig. S4. Funnel plot of between-groups analysis for DBP.
Eliminating interactions between non-neighboring qubits in the preparation of cluster states in quantum molecules
Creators: name: Guo, Guo-Ping
name: Hao, Xiao-Jie
name: Tu, Tao
name: Zhu, Zhi-Cheng
name: Guo, Guang-Can
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a scheme to eliminate the effect of non-nearest-neighbor qubits in preparing cluster state with double-dot molecules. As the interaction Hamiltonians between qubits are Ising-model and mutually commute, we can get positive and negative effective interactions between qubits to cancel the effect of non-nearest-neighbor qubits by properly changing the electron charge states of each quantum dot molecule. The total time for the present multi-step cluster state preparation scheme is only doubled for one-dimensional qubit chain and tripled for two-dimensional qubit array comparing with the time of previous protocol leaving out the non-nearest-neighbor interactions.
description: 5 pages, 4 figures, 2 tables
The Evolution of the Multiplicity of Embedded Protostars I: Sample Properties and Binary Detections
Creators: name: Connelley, Michael
name: Reipurth, Bo
name: Tokunaga, Alan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the observational results of a near-infrared survey of a large sample of Class I protostars designed to determine the Class I binary separation distribution from ~100 AU to ~5000 AU. We have selected targets from a new sample of 267 nearby candidate Class I objects. This sample is well understood, consists of mostly Class I young stellar objects (YSOs) within 1 kpc, has targets selected from the whole sky, and is not biased by previous studies of star formation. We have observed 189 Class I YSOs north of -40 degrees declination at H, K and L'-bands, with a median angular resolution of 0.33" at L'. We determine our detection limit for close binary companions by observing artificial binaries. We choose a contrast limit and an outer detection limit to minimize contamination and to ensure that a candidate companion is gravitationally bound. Our survey uses observations at L' rather than K-band for the detection of binary companions since there is less scattered light and better seeing at L'. This paper presents the positions of our targets, the near-IR photometry of sources detected in our fields at L', as well as the observed properties of the 89 detected companions (73 of which are newly discovered). Although we have chosen contrast and separation limits to minimize contamination, we expect that there are ~6 stars identified as binary companions that are due to contamination. Finder charts at L' for each field are shown to facilitate future studies of these objects.
description: 52 pages, 8 figures, 6 tables, accepted by the Astronomical Journal
Additional file 1 of Epigenomic biomarkers insights in PBMCs for prognostic assessment of ECMO-treated cardiogenic shock patients
Creators: name: Hsiao, Yi-Jing
name: Chiang, Su-Chien
name: Wang, Chih-Hsien
name: Chi, Nai-Hsin
name: Yu, Hsi-Yu
name: Hong, Tsai-Hsia
name: Chen, Hsuan-Yu
name: Lin, Chien-Yu
name: Kuo, Shuenn-Wen
name: Su, Kang-Yi
name: Ko, Wen-Je
name: Hsu, Li-Ming
name: Lin, Chih-An
name: Cheng, Chiou-Ling
name: Chen, Yan-Ming
name: Chen, Yih-Sharng
name: Yu, Sung-Liang
Publisher: name: figshare
Year: 2024
Subjects: Medicine
Cell Biology
Biological Sciences not elsewhere classified
Cancer
Science Policy

description: Supplementary Material 1
A WENO Algorithm for the Radiative Transfer and Ionized Sphere at Reionization
Creators: name: Qiu, Jing-Mei
name: Shu, Chi-Wang
name: Feng, Long-Long
name: Fang, Li-Zhi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that the algorithm based on the weighted essentially nonoscillatory (WENO) scheme with anti-diffusive flux corrections can be used as a solver of the radiative transfer equations. This algorithm is highly stable and robust for solving problems with both discontinuities and smooth solution structures. We test this code with the ionized sphere around point sources. It shows that the WENO scheme can reveal the discontinuity of the radiative or ionizing fronts as well as the evolution of photon frequency spectrum with high accuracy on coarse meshes and for a very wide parameter space. This method would be useful to study the details of the ionized patch given by individual source in the epoch of reionization. We demonstrate this method by calculating the evolution of the ionized sphere around point sources in physical and frequency spaces. It shows that the profile of the fraction of neutral hydrogen and the ionized radius are sensitively dependent on the intensity of the source.
description: Elsart Latex file, 20 pages, 8 figures included, accepted for publication in New Astronomy
30 Glitches in slow pulsars
Creators: name: Janssen, G. H.
name: Stappers, B. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have analyzed 5.5 years of timing observations of 7 'slowly' rotating radio pulsars, made with the Westerbork Synthesis Radio Telescope. We present improved timing solutions and 30, mostly small, new glitches. Particularly interesting are our results on PSR J1814-1744, which is one of the pulsars with similar rotation parameters and magnetic field strength to the Anomalous X-ray Pulsars (AXPs). Although the high-B radio pulsars do not show X-ray emission, and no radio emission is detected for AXPs, the roughly similar glitch parameters provide us with another tool to compare these classes of neutron stars. Furthermore, we were able to detect glitches one to two orders of magnitude smaller than before, for example in our well-sampled observations of PSR B0355+54. We double the total number of known glitches in PSR B1737-30, and improve statistics on glitch sizes for this pulsar individually and pulsars in general. We detect no significant variations in dispersion measure for PSRs B1951+32 and B2224+65, two pulsars located in high-density surroundings. We discuss the effect of small glitches on timing noise, and show it is possible to resolve timing-noise looking structures in the residuals of PSR B1951+32 by using a set of small glitches.
description: 9 pages, 6 figures, accepted by A&A
Geodesic Structure of the Accelerated Stephani Universe
Creators: name: Bormotova, Irina
name: Kopteva, Elena
name: Stuchlik, Zdenek
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: For the spherically symmetric Stephani cosmological model with an accelerated expansion, we investigate the main scenarios of the test particle and photon motion. We show that a comoving observer sees an appropriate picture. In the case of purely radial motion, the radial velocity decreases slightly with time due to the universe expansion. Both particles and photons spiral out of the center when the radial coordinate is constant. In the case of the motion with arbitrary initial velocity, the observable radial distance to the test particle can increase under negative observable radial velocity.
description: 15 pages, 11 figures
MOESM6 of Exercise therapy improves eGFR, and reduces blood pressure and BMI in non-dialysis CKD patients: evidence from a meta-analysis
Creators: name: Zhang, Lijun
name: Wang, Yangyang
name: Xiong, Lianlian
name: Luo, Yanfang
name: Huang, Zhijun
name: Yi, Bin
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Marine Biology

description: Additional file 6: Fig. S5. Funnel plot of between-groups analysis for TC.
Clues for the origin of the fundamental metallicity relations. I: The hierarchical building up of the structure
Creators: name: De Rossi, Maria E.
name: Tissera, Patricia B.
name: Scannapieco, Cecilia
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse the evolutionary history of galaxies formed in a hierarchical scenario consistent with the concordance $Λ$-CDM model focusing on the study of the relation between their chemical and dynamical properties. Our simulations consistently describe the formation of the structure and its chemical enrichment within a cosmological context. Our results indicate that the luminosity-metallicity (LZR) and the stellar mass-metallicity (MZR) relations are naturally generated in a hierarchical scenario. Both relations are found to evolve with redshift. In the case of the MZR, the estimated evolution is weaker than that deduced from observational works by approximately 0.10 dex. We also determine a characteristic stellar mass, $M_c \approx 3 \times 10^{10} M_{\odot}$, which segregates the simulated galaxy population into two distinctive groups and which remains unchanged since $z\sim 3$, with a very weak evolution of its metallicity content. The value and role played by $M_c$ is consistent with the characteristic mass estimated from the SDSS galaxy survey by Kauffmann et al. (2004). Our findings suggest that systems with stellar masses smaller than $M_c$ are responsible for the evolution of this relation at least from $ z\approx 3$. Larger systems are stellar dominated and have formed more than 50 per cent of their stars at $z \ge 2$, showing very weak evolution since this epoch. We also found bimodal metallicity and age distributions from $z\sim3$, which reflects the existence of two different galaxy populations. Although SN feedback may affect the properties of galaxies and help to shape the MZR, it is unlikely that it will significantly modify $M_c$ since, from $z=3$ this stellar mass is found in systems with circular velocities larger than $100 \kms$.
description: 17 pages, 13 figures. Minor changes to match accepted version. Accepted October 3 MNRAS
$D-\bar{D}$ mixing constraints on FCNC with a non-universal $Z^\prime$
Creators: name: He, Xiao-Gang
name: Valencia, German
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The BaBar and Belle collaborations have recently reported evidence for $D^0-\bar D^0$ mixing. This measurement provides the first significant constraint on FCNC in the up-quark sector for non-universal $Z^\prime$ models. Attributing the observed $D-\bar D$ mixing to new physics, we comment on the resulting rare $D$ and $t$ decays. We also show that a CP violating semileptonic asymmetry as large as $\sim 30%$ is allowed by the experimental results.
description: RevTex, 10 pages, 1 figure. Several typoes corrected
Spherical Spectral Synthesis and Two-Radius Theorems on Damek-Ricci Spaces
Creators: name: Peyerimhoff, Norbert
name: Samiou, Evangelia
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C30, 43A85, 22E30

description: We prove that spherical spectral analysis and synthesis hold in Damek-Ricci spaces and derive two-radius theorems.
Multipion decays of omega(782) and phi(1020)
Creators: name: Achasov, N. N.
name: Kozhevnikov, A. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using the chiral model of pseudoscalar, vector, and axial vector mesons based on the hidden local symmetry added with the terms induced by the Wess-Zumino anomaly, the results of calculations of the branching fractions of the decays omega(782) and phi(1020) mesons to the 2pi+ 2pi- pi0, pi+ pi -3pi0 multipion states are presented.
description: 4 pages. Talk presented by A.A. Kozhevnikov at the International Workshop "e+e- Collisions from Phi to Psi", February 27-March 2, 2006, BINP, Novosibirsk, Russian Federation
Large-Scale Network Embedding in Apache Spark
Creators: name: Lin, Wenqing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Network embedding has been widely used in social recommendation and network analysis, such as recommendation systems and anomaly detection with graphs. However, most of previous approaches cannot handle large graphs efficiently, due to that (i) computation on graphs is often costly and (ii) the size of graph or the intermediate results of vectors could be prohibitively large, rendering it difficult to be processed on a single machine. In this paper, we propose an efficient and effective distributed algorithm for network embedding on large graphs using Apache Spark, which recursively partitions a graph into several small-sized subgraphs to capture the internal and external structural information of nodes, and then computes the network embedding for each subgraph in parallel. Finally, by aggregating the outputs on all subgraphs, we obtain the embeddings of nodes in a linear cost. After that, we demonstrate in various experiments that our proposed approach is able to handle graphs with billions of edges within a few hours and is at least 4 times faster than the state-of-the-art approaches. Besides, it achieves up to $4.25\%$ and $4.27\%$ improvements on link prediction and node classification tasks respectively. In the end, we deploy the proposed algorithms in two online games of Tencent with the applications of friend recommendation and item recommendation, which improve the competitors by up to $91.11\%$ in running time and up to $12.80\%$ in the corresponding evaluation metrics.
description: Accepted in KDD 2021
Placeholder Substructures I: The Road from NKS to Scale-Free Networks Is Paved with Zero-Divisors
Creators: name: de Marrais, Robert P. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 17D99 (Primary), 68Q80 (Secondary)

description: Zero-divisors (ZDs) derived by Cayley-Dickson Process (CDP) from N-dimensional hypercomplex numbers (N a power of 2, at least 4) can represent singularities and, as N approaches infinite, fractals -- and thereby,scale-free networks. Any integer greater than 8 and not a power of 2 generates a meta-fractal or "Sky" when it is interpreted as the "strut constant" (S) of an ensemble of octahedral vertex figures called "Box-Kites" (the fundamental building blocks of ZDs). Remarkably simple bit-manipulation rules or "recipes" provide tools for transforming one fractal genus into others within the context of Wolfram's Class 4 complexity.
description: Comments: 20 pp., 2 fig. First of 3-part "theorem/proof" exposition of 78-slide Powerpoint from Wolfram Science's NKS 2006, available at http://wolframscience.com/conference/2006/presentations/materials/demarrais.ppt [v2: small fixes][v3: remarks added(p. 17) RE: 2nd kind of box-kite flow pattern, and future work focusing on it.]
Additional file 1 of Working in a relational way is everything: Perceptions of power and value in a drug policy-making network
Creators: name: Zakimi, Naomi
name: Bouchard, Martin
name: Ritter, Alison
name: Greer, Alissa
Publisher: name: figshare
Year: 2024
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 1. Consolidated Criteria for Reporting Qualitative Research (COREQ) Checklist.