cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Giant Flare of December 27, 2004 from SGR 1806-20
Creators: name: Boggs, Steven E.
name: Zoglauer, A.
name: Bellm, E.
name: Hurley, K.
name: Lin, R. P.
name: Smith, D. M.
name: Wigger, C.
name: Hajdas, W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The giant flare of December 27, 2004 from SGR 1806-20 represents one of the most extraordinary events captured in over three decades of monitoring the gamma-ray sky. One measure of the intensity of the main peak is its effect on X- and gamma-ray instruments. RHESSI, an instrument designed to study the brightest solar flares, was completely saturated for ~0.5 s following the start of the main peak. A fortuitous alignment of SGR 1806-20 near the Sun at the time of the giant flare, however, allowed RHESSI a unique view of the giant flare event, including the precursor, the main peak decay, and the pulsed tail. Since RHESSI was saturated during the main peak, we augment these observations with Wind and RHESSI particle detector data in order to reconstruct the main peak as well. Here we present detailed spectral analysis and evolution of the giant flare. We report the novel detection of a relatively soft fast peak just milliseconds before the main peak, whose timescale and sizescale indicate a magnetospheric origin. We present the novel detection of emission extending up to 17 MeV immediately following the main peak, perhaps revealing a highly-extended corona driven by the hyper-Eddington luminosities. The spectral evolution and pulse evolution during the tail are presented, demonstrating significant magnetospheric twist and evolution during this phase. Blackbody radii are derived for every stage of the flare, which show remarkable agreement despite the range of luminosities and temperatures covered. Finally, we place significant upper limits on afterglow emission in the hundreds of seconds following the giant flare.
description: 32 pages, 14 figures, submitted to ApJ
Comparing simulations and experiments of positive streamers in air: steps toward model validation
Creators: name: Li, Xiaoran
name: Dijcks, Siebe
name: Nijdam, Sander
name: Sun, Anbang
name: Ebert, Ute
name: Teunissen, Jannis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We compare simulations and experiments of single positive streamer discharges in air at 100 mbar, aiming towards model validation. Experimentally, streamers are generated in a plate-plate geometry with a protruding needle. We are able to capture the complete time evolution of reproducible single-filament streamers with a ns gate-time camera. A 2D axisymmetric drift-diffusion-reaction fluid model is used to simulate streamers under conditions closely matching those of the experiments. Streamer velocities, radii and light emission profiles are compared between model and experiment. Good qualitative agreement is observed between the experimental and simulated optical emission profiles, and for the streamer velocity and radius during the entire evolution. Quantitatively, the simulated streamer velocity is about 20% to 30% lower at the same streamer length, and the simulated radius is about 1 mm (20% to 30%) smaller. The effect of various parameters on the agreement between model and experiment is studied, such as the used transport data, the background ionization level, the photoionization rate, the gas temperature, the voltage rise time and the voltage boundary conditions. An increase in gas temperature due to the 50 Hz experimental repetition frequency could probably account for some of the observed discrepancies.
Lipstick, laptops, lumber and lathes: a study of the significance of technology education to female students
Creators: name: Doll, Judith Ann
Publisher: name: University of British Columbia
Year: 2009

description: A survey of 117 females in 13 schools throughout the province of British Columbia examined aspects of technology education programs that females found important, attractive and interesting. Forty-five questions regarding attitudes toward technology were answered on a five point Lickert type scale. Three additional open ended questions focused on the importance of the course in which they were enrolled, the reasons they would choose to take the course again and changes they would suggest. It was found that these female students were interested in understanding technology that affects them, and that using equipment and developing skills to design and make things with different materials are important enough to attract them to technology education.
Μελέτη θερμικής συμπεριφοράς διατομών ιστορικής τοιχοποιίας σε δυναμικά μεταβαλλόμενες συνθήκες
Creators: name: Ευθυμιάδου, Θάλεια Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Θερμική συμπεριφορά
Δυναμικά μεταβαλλόμενες συνθήκες
Θερμικό μοντέλο
Thermal behavior
Transient dynamic analysis
Thermal model

description: Στην παρούσα διπλωματική εργασία αναλύεται η θερμική συμπεριφορά διατομής ξυλόπηκτης τοιχοποιίας σε δυναμικά μεταβαλλόμενες συνθήκες. Η ανάλυση πραγματοποιείται με τη μέθοδο πεπερασμένων στοιχείων. Στόχος είναι η μελέτη της επίδρασης παραμέτρων όπως το υλικό της τοιχοποιίας, το πάχος της τοιχοποιίας και το πάχος του θερμομονωτικού υλικού στην θερμική συμπεριφορά της διατομής. Σε αυτό το πλαίσιο παρουσιάζεται η έννοια η έννοια του κτιριακού κελύφους, οι παράμετροι που επηρεάζουν τη θερμική συμπεριφορά του και οι θεμελιώδεις άξονες για τον ορθολογικό σχεδιασμό του. Τα αποτελέσματα των θερμικών προσομοιώσεων που πραγματοποιήθηκαν παρατίθενται διαγραμματικά και αναλύονται εκτενώς σε δύο στάδια. Στο πρώτο στάδιο μελετάται η επιρροή: (α) του πάχους της τοιχοποιίας (β) του πάχους του θερμομονωτικού υλικού (γ) των δυναμικά μεταβαλλόμενων συνθηκών του εξωτερικού περιβάλλοντος, στα χαρακτηριστικά μεγέθη θερμικής αδράνειας (συντελεστής μείωσης f και χρονική καθυστέρηση φ) και στη θερμορροή μεταξύ εσωτερικού περιβάλλοντος – επιφάνειας εσωτερικού επιχρίσματος. Σε δεύτερο στάδιο γίνεται συγκριτική ανάλυση των αποτελεσμάτων για τα τέσσερα υλικά τοιχοποιίας που εξετάστηκαν. Τα παραπάνω αποτελέσματα είναι χρήσιμα για τον σωστό επανασχεδιασμό του κτιριακού κελύφους παραδοσιακών κτιρίων και την εξασφάλιση συνθηκών θερμικής άνεσης στο εσωτερικό του
description: The present thesis is a transient dynamic analysis of thermal behavior of a traditional wall configuration. The analysis is carried out employing the finite element method. The influence of parameters, such the wall material, the thickness of the wall and the thickness of the insulation material, in the thermal behavior of the section, has been studied. In this context, the building envelope concept, the parameters that affect the thermal behavior and the fundamentals of designing industry – conscious buildings are introduced. The results are presented graphically being divided into two stages. In the first stage, the effect of wall΄s thermophysical properties, the effect of wall΄s thickness and the effect of wall΄s insulation thickness on the thermal inertia parameters (decrement factor f, time lag φ and on the heat flux through the room and the surface of the wall is investigated numerically. In the second stage, a comparative analysis between the different wall materials is presented. The results of this study are useful in redesigning energy – conscious traditional buildings that achieve suitable indoor comfort levels
Spatial decomposition of on-nucleus spectra of quasar host galaxies
Creators: name: Jahnke, Knud
name: Wisotzki, Lutz
name: Courbin, Frederic
name: Letawe, Geraldine
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In order to study the host galaxies of type 1 (broad-line) quasars, we present a semi-analytic modelling method to decompose the on-nucleus spectra of quasars into nuclear and host galaxy channels. The method uses the spatial information contained in long-slit or slitlet spectra. A routine determines the best fitting combination of the spatial distribution of the point like nucleus and extended host galaxy. Inputs are a simultaneously observed PSF, and external constraints on galaxy morphology from imaging. We demonstrate the capabilities of the method to two samples of a total of 18 quasars observed with EFOSC at the ESO 3.6m telescope and FORS1 at the ESO VLT. ~50% of the host galaxies with sucessful decomposition show distortions in their rotation curves or peculiar gas velocities above normal maximum velocities for disks. This is consistent with the fraction from optical imaging. All host galaxies have quite young stellar populations, typically 1-2 Gyr. For the disk dominated hosts these are consistent with their inactive counterparts, the luminosity weighted stellar ages are much younger for the bulge dominated hosts, compared to inactive early type galaxies. While this presents further evidence for a connection of galaxy interaction and AGN activity for half of the sample, this is not clear for the other half: These are often undistorted disk dominated host galaxies, and interaction on a smaller level might be detected in deeper high-resolution images or deeper spectroscopic data. The velocity information does not show obvious signs for large scale outflows triggered by AGN feedback - the data is consistent with velocity fields created by galaxy interaction.
description: Accepted for publication in MNRAS; 19 pages, 12 figures
Additional file 2 of Impact of COVID-19 on health services utilization in Province-2 of Nepal: a qualitative study among community members and stakeholders
Creators: name: Singh, Devendra Raj
name: Dev Ram Sunuwar
name: Shah, Sunil Kumar
name: Kshitij Karki
name: Sah, Lalita Kumari
name: Bipin Adhikari
name: Rajeeb Kumar Sah
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 2. Thematic network analysis framework (from codes to global themes).
Renormalons in static QCD potential: review and some updates
Creators: name: Takaura, Hiromasa
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We give a brief review of the current understanding of renormalons of the static QCD potential in coordinate and momentum spaces. We also reconsider estimate of the normalization constant of the $u=3/2$ renormalon and propose a new way to improve the estimate.
description: 13 pages, 4 figures, contribution to EPJ ST "Renormalons and Hyperasymptotics in QCD", published version
Observations of Her X-1 in low states during SRG/eROSITA all-sky survey
Creators: name: Shakura, N. I.
name: Kolesnikov, D. A.
name: Medvedev, P. S.
name: Sunyaev, R. A.
name: Gilfanov, M. R.
name: Postnov, K. A.
name: Molkov, S. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: eROSITA (extended ROentgen Survey with an Imaging Telescope Array) instrument onboard the Russian-German `Spectrum-Roentgen-Gamma' (SRG) mission observed the Her X-1/HZ Her binary system in multiple scans over the source during the first and second SRG all-sky surveys. Both observations occurred during a low state of the X-ray source when the outer parts of the accretion disk blocked the neutron star from view. The orbital modulation of the X-ray flux was detected during the low states. We argue that the detected X-ray radiation results from scattering of the emission of the central source by three distinct regions: (a) an optically thin hot corona with temperature $\sim (2-4) \times 10^6$ K above the irradiated hemisphere of the optical star; (b) an optically thin hot halo above the accretion disk; and (c) the optically thick cold atmosphere of the optical star. The latter region effectively scatters photons with energies above $5-6$ keV.
description: 10 pages, 7 figures. Accepted to Astronomy & Astrophysics
Additional file 2 of Synthesis and accumulation of amylase-trypsin inhibitors and changes in carbohydrate profile during grain development of bread wheat (Triticum aestivum L.)
Creators: name: Call, Lisa
name: Haider, Elisabeth
name: D’Amico, Stefano
name: Reiter, Elisabeth
name: Grausgruber, Heinrich
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 2 Fig. S2 RP-HPLC chromatograms (214 nm) of salt-water extracts from developing kernels of bread wheat cv. ‘Arnold’. a-h Grains harvested at 7, 11, 14, 18, 25, 33, 39, and 46 days after anthesis, respectively.
A Novel Framework for Neural Architecture Search in the Hill Climbing Domain
Creators: name: Verma, Mudit
name: Sinha, Pradyumna
name: Goyal, Karan
name: Verma, Apoorva
name: Susan, Seba
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Neural networks have now long been used for solving complex problems of image domain, yet designing the same needs manual expertise. Furthermore, techniques for automatically generating a suitable deep learning architecture for a given dataset have frequently made use of reinforcement learning and evolutionary methods which take extensive computational resources and time. We propose a new framework for neural architecture search based on a hill-climbing procedure using morphism operators that makes use of a novel gradient update scheme. The update is based on the aging of neural network layers and results in the reduction in the overall training time. This technique can search in a broader search space which subsequently yields competitive results. We achieve a 4.96% error rate on the CIFAR-10 dataset in 19.4 hours of a single GPU training.
description: 8 pages, 6 figures
Additional file 3 of Synthesis and accumulation of amylase-trypsin inhibitors and changes in carbohydrate profile during grain development of bread wheat (Triticum aestivum L.)
Creators: name: Call, Lisa
name: Haider, Elisabeth
name: D’Amico, Stefano
name: Reiter, Elisabeth
name: Grausgruber, Heinrich
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 3 Table S1. Protein content, composition and characterization of developing grains of bread wheat (Triticum aestivum L.) cv. ‘Arnold’ on a single kernel basis.
Role of tensor terms of the Skyrme energy-density functional on neutron deformed magic numbers in the rare-earth region
Creators: name: Kelvin-Lee, Kai-Wen
name: Koh, Meng-Hock
name: Bonneau, Ludovic
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The role of the tensor part of the nuclear interaction is actively investigated in recent years due to experimental advancement yielding new data in nuclei far from the $β$-stability line. In this article we study the effect of this part of the nuclear interaction on deformed neutron magic numbers in the rare-earth region within the Skyrme energy-density functional for various TIJ \cite{lesinski:2007} parametrizations. Two quantities signaling magic numbers are considered: two-neutron separation energies and single-particle energies. They are calculated in isotopic series involving well-deformed rare-earth nuclei ranging from $Z=64$ to $Z=72$ in the $N=100$ region. Obtained results show that, whereas the neutron-proton tensor contribution to binding energies is important to reproduce neutron sub-shell closure at $N = 104$ in heavier rare earths Yb ($Z=70$) and Hf ($Z=72$) isotopes, like-particle tensor also plays a role in the single-particle spectrum around Fermi level and is even favored in lighter Gd ($Z=64$) and Dy ($Z=66$) rare-earth isotopes.
description: 10 pages, 4 figures, to be submitted to Phys. Rev. C
Improving parametric mass modelling of lensing clusters through a perturbative approach
Creators: name: Beauchesne, Benjamin
name: Clément, Benjamin
name: Richard, Johan
name: Kneib, Jean-Paul
name: -----
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a new method to model the mass distribution of galaxy clusters that combines a parametric and a free-form approach to reconstruct cluster cores with strong lensing constraints. It aims at combining the advantages of both approaches, by keeping the robustness of the parametric component with an increased flexibility thanks to a free-form surface of B-spline functions. We demonstrate the capabilities of this new approach on the simulated cluster Hera, which has been used to evaluate lensing codes for the analysis of the Frontier Fields clusters. The method leads to better reproduction of the constraints, with an improvement by a factor $\sim3-4$ on the root-mean-square error on multiple-image positions, when compared to parametric-only approaches. The resulting models show a better accuracy in the reconstruction of the amplitude of the convergence field while conserving a high fidelity on other lensing observables already well reproduced. We make this method publicly available through its implementation in the Lenstool software.
description: 19 pages, 14 figures. Accepted for publication in MNRAS
Η γυναικεία επίδραση στη βυζαντινή αυλή τον 11ο αιώνα: Η περίπτωση της πορφυρογέννητης Ζωής
Creators: name: Στιβασάρη, Στεργιανή Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Πορφυρογέννητη Ζωή
Γυναίκες και εξουσία
Μακεδονική δυναστεία
Porphyrogenita Zoe
Women and power
Macedonian dynasty

description: Σύζυγος τριών αυτοκρατόρων και αυτοκράτειρα η ίδια, η Ζωή ως απόγονος της Μακεδονικής δυναστείας αποτελεί μία από τις κεντρικές πολιτικές μορφές του 11ου αιώνα. Η Ζωή ήταν η δεύτερη από τις τρεις κόρες του Κωνσταντίνου Η΄ (1025-1028), απογόνου της Μακεδονικής δυναστείας, και ανιψιά του Βασιλείου Β΄ (976-1025). Η αυτοκράτειρα Ζωή, ως η τελευταία της Μακεδονικής δυναστείας μαζί με την αδερφή της Θεοδώρα, διαδραμάτισε νομιμοποιητικό ρόλο στη διαδοχή του αυτοκρατορικού θρόνου μέσω των γάμων της με τρεις διαδοχικούς συζύγους και μιας υιοθεσίας. Η παρούσα μελέτη διερευνά, με βάση τις μαρτυρίες των πηγών, βυζαντινών, αρμενικών και αραβικών και έχοντας υπόψη τις αντιλήψεις των Βυζαντινών για τη θέση της γυναίκας, τον ρόλο και τη δράση της πορφυρογέννητης Ζωής στην αυλή. Ειδικότερα εξετάζεται, αν οι επιλογές της αυτοκράτειρας ήταν αποτέλεσμα της δικής της βούλησης ή προσδιορίστηκαν από ανθρώπους του περιβάλλοντός της και επιχειρείται να παρουσιαστεί μία ολοκληρωμένη και αντικειμενική εικόνα της Ζωής ως γυναίκας και ως αυτοκράτειρας.
description: Zoe, descendant of the Macedonian dynasty, wife of three emperors and empress itself, is one of the most central political figures of the 11th century. Zoe was the second of the three daughters of Constantine VIII (1025-1028), descendant of the Macedonian dynasty, and niece of Basil II (976-1025). Empress Zoe, as the last of the Macedonian dynasty along with her sister Theodora played a legitimating role in the succession of the imperial throne through her marriages with three successive spouses and an adoption. The thesis attempts to investigate the role and the action of porphyrogenita Zoe at the court, based on the sources’ testimonies, Byzantine, Armenian and Arabic and taking into consideration the byzantine perceptions of the position of woman. In particular, it is examined whether the empress’s choices were the result of her own will or were determined by people in her surroundings. Moreover, it attempts to present a complete and objective image of Zoe as a woman and as an empress.
Consistency of cross validation for comparing regression procedures
Creators: name: Yang, Yuhong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G07, 62B10 (Primary) 62C20 (Secondary)

description: Theoretical developments on cross validation (CV) have mainly focused on selecting one among a list of finite-dimensional models (e.g., subset or order selection in linear regression) or selecting a smoothing parameter (e.g., bandwidth for kernel smoothing). However, little is known about consistency of cross validation when applied to compare between parametric and nonparametric methods or within nonparametric methods. We show that under some conditions, with an appropriate choice of data splitting ratio, cross validation is consistent in the sense of selecting the better procedure with probability approaching 1. Our results reveal interesting behavior of cross validation. When comparing two models (procedures) converging at the same nonparametric rate, in contrast to the parametric case, it turns out that the proportion of data used for evaluation in CV does not need to be dominating in size. Furthermore, it can even be of a smaller order than the proportion for estimation while not affecting the consistency property.
description: Published in at http://dx.doi.org/10.1214/009053607000000514 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Εγκεφαλική οξυμετρία στις καρδιοχειρουργικές επεμβάσεις
Creators: name: Σοφιανίδου, Αικατερίνη Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: εγκεφαλική οξυμετρία
καρδιοχειρουργικές επεμβάσεις
διεγχειρητική παρακολούθηση
oxygen saturation
cardiac operations
perioperative monitoring

description: Στις καρδιοχειρουργικές επεμβάσεις οι νευρολογικές διαταραχές αποτελούν μια συχνή επιπλοκή και ένα σημαντικό αίτιο νοσηρότητας και θνητότητας [59], [60], [61]. Κατά καιρούς για την παρακολούθηση του κεντρικού νευρικού συστήματος κατά την διάρκεια των καρδιοχειρουργικών επεμβάσεων έχουν χρησιμοποιηθεί διάφορες μέθοδοι και τεχνικές, όπως το ηλεκτροεγκεφαλογράφημα και η μελέτη προκλητών σωματοαισθητικών δυναμικών. Τα τελευταία χρόνια, χρησιμοποιείται για τον σκοπό αυτό η εγκεφαλική οξυμετρία (rSO2) [32], [33], [45], η οποία μετρά κατά προσέγγιση τον κορεσμό του φλεβικού αίματος στον εγκέφαλο, αντανακλώντας το ισοζύγιο προσφοράς και κατανάλωσης οξυγόνου. Σκοπός της παρούσας εργασίας είναι η παρουσίαση των βασικών γνώσεων γύρω από την εγκεφαλική οξυμετρία, χρησιμοποιώντας ως πηγή και την πρόσφατη διεθνή βιβλιογραφία. Συμπερασματικά καταλήγουμε πως η παρακολούθηση της οξυγόνωσης του εγκεφάλου με τη χρήση της εγκεφαλικής οξυμετρίας είναι μια απαραίτητη, ασφαλής, αξιόπιστη και ανώδυνη μέθοδος παρακολούθησης του ΚΝΣ. Αποτελεί ένα χρήσιμο εργαλείο διεγχειρητικά, αλλά και για τη μετεγχειρητική παρακολούθηση του καρδιοχειρουργικού ασθενούς στην μονάδα εντατικής θεραπείας. Η ανάλυση και η αξιοποίηση των πληροφοριών και των πιθανών μεταβολών του rSO2 παρέχει στη καρδιοχειρουργική ομάδα τη δυνατότητα παρέμβασης, και έγκαιρης διόρθωσης παραμέτρων που επηρεάζουν όχι μόνο την νευρολογική κατάσταση του ασθενούς, αλλά την συνολική λειτουργία του οργανισμού
description: Neurological disorders after cardiac operations consist a common category of complications and, furthermore, an important factor of morbidity and mortality. In the past, various methods have been used for the perioperative monitoring of the Central Nervous System, including electroencephalography and the study of somatosensory evoked potentials (SSEP). During the last years, perioperative monitoring is performed through the monitoring of brain oxymetry (rSO2), which calculates the venous oxygen saturation of the brain, reflecting the balance between the oxygen demand and supply in the organ. Aim of the current study is to present the basic knowledge on rSO2, using as source the recent related international literature. We conclude that the monitoring of rSO2 is an atraumatic, safe and reliable method of perioperative neurological monitoring. It consists a valuable tool, not only intraoperatively, but also postoperatively in the ICU. The analysis of the data regarding rSO2 provides important information which can guide towards the correction of parameters, related not only to the neurological status, but to the general; health condition of the heart-operated patient
Field Induced Supersolid Phase in Spin-One Heisenberg Models
Creators: name: Sengupta, P.
name: Batista, C. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use quantum Monte Carlo methods to demonstrate that the quantum phase diagram of the S=1 Heisenberg model with uniaxial anisotropy contains an extended supersolid phase. We also show that this Hamiltonian is a particular case of a more general and ubiquitous model that describes the low energy spectrum of a class of {\it isotropic} and {\it frustrated} spin systems. This crucial result provides the required guidance for finding experimental realizations of a spin supersolid state.
description: 4 pages, 4 figures
How many supernovae are we missing at high redshift?
Creators: name: Mannucci, F.
name: Della Valle, M.
name: Panagia, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Near-infrared and radio searches for core-collapse supernovae (CC SNe) in the local universe have shown that the vast majority of the events occurring in massive starburst are missed by the current optical searches as they explode in very dusty environments. Recent infrared observations have shown that the fraction of star-formation activity that takes place in very luminous dusty starbursts sharply increases with redshift and becomes the dominant star formation component at z>0.5. As a consequence, an increasing fraction of SNe are expected to be missed by high-redshift optical searches. We estimate that 5-10% of the local CC SNe are out of reach of the optical searches. The fraction of missing events rises sharply toward z=1, when about 30% of the CC SNe will be undetected. At z=2 the missing fraction will be about 60%. Correspondingly, for type Ia SNe, our computations provide missing fractions of 15% at z=1 and 35% at z=2. Such large corrections are crucially important to compare the observed SN rate with the expectations from the evolution of the cosmic star formation history, and to design the future SN searches at high redshifts.
description: 9 pages, MNRAS, in press, a few typos corrected
Predicting Quantum Potentials by Deep Neural Network and Metropolis Sampling
Creators: name: Hong, Rui
name: Zhou, Peng-Fei
name: Xi, Bin
name: Hu, Jie
name: Ji, An-Chun
name: Ran, Shi-Ju
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The hybridizations of machine learning and quantum physics have caused essential impacts to the methodology in both fields. Inspired by quantum potential neural network, we here propose to solve the potential in the Schrodinger equation provided the eigenstate, by combining Metropolis sampling with deep neural network, which we dub as Metropolis potential neural network (MPNN). A loss function is proposed to explicitly involve the energy in the optimization for its accurate evaluation. Benchmarking on the harmonic oscillator and hydrogen atom, MPNN shows excellent accuracy and stability on predicting not just the potential to satisfy the Schrodinger equation, but also the eigen-energy. Our proposal could be potentially applied to the ab-initio simulations, and to inversely solving other partial differential equations in physics and beyond.
Elicitation: Basic verbal aspect and negation
Creators: name: Chihuanco Cruz, Lucho
name: Huancho, Asael
name: Robertson, Allegra
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: ame

description: El aspecto verbal básico y la negación.

See corresponding field notes on page 15.

Busque las notas correspondientes en la página 15.
Additional file 4 of Synthesis and accumulation of amylase-trypsin inhibitors and changes in carbohydrate profile during grain development of bread wheat (Triticum aestivum L.)
Creators: name: Call, Lisa
name: Haider, Elisabeth
name: D’Amico, Stefano
name: Reiter, Elisabeth
name: Grausgruber, Heinrich
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 4 Table S2. Compositional changes in the SWSC (small water-soluble carbohydrates) and NWSC (non-water-soluble carbohydrates) profile throughout grain development of bread wheat cv. ‘Arnold’ on a single kernel basis.
Gravitational amplitudes in black-hole evaporation: the effect of non-commutative geometry
Creators: name: Di Grezia, Elisabetta
name: Esposito, Giampiero
name: Miele, Gennaro
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent work in the literature has studied the quantum-mechanical decay of a Schwarzschild-like black hole, formed by gravitational collapse, into almost-flat space-time and weak radiation at a very late time. The relevant quantum amplitudes have been evaluated for bosonic and fermionic fields, showing that no information is lost in collapse to a black hole. On the other hand, recent developments in noncommutative geometry have shown that, in general relativity, the effects of noncommutativity can be taken into account by keeping the standard form of the Einstein tensor on the left-hand side of the field equations and introducing a modified energy-momentum tensor as a source on the right-hand side. The present paper, relying on the recently obtained noncommutativity effect on a static, spherically symmetric metric, considers from a new perspective the quantum amplitudes in black hole evaporation. The general relativity analysis of spin-2 amplitudes is shown to be modified by a multiplicative factor F depending on a constant non-commutativity parameter and on the upper limit R of the radial coordinate. Limiting forms of F are derived which are compatible with the adiabatic approximation here exploited. Approximate formulae for the particle emission rate are also obtained within this framework.
description: 14 pages, 2 figures, Latex macros. In the final version, section 5 has been amended, the presentation has been improved, and References 21-24 have been added. Last misprints amended in Section 5 and Ref. 24
Elicitation: Kinship terms, possession, and basic verbal aspect
Creators: name: Ambrosio Santos, Yolanda
name: Chihuanco Cruz, Lucho
name: Huancho, Asael
name: Robertson, Allegra
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: ame

description: La familia, la posesión y el aspecto verbal básico.

See corresponding field notes on pages 13-14.

Busque las notas correspondientes en las páginas 13-14.
Radio afterglow of magnetars' giant flares
Creators: name: Mehta, Riddhi
name: Barkov, Maxim
name: Lyutikov, Maxim
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We develop a model for the radio afterglow of the giant flare of SGR 1806-20 arising due to the interaction of magnetically-dominated cloud, an analogue of Solar Coronal Mass Ejections (CMEs), with the interstellar medium (ISM). The CME is modeled as a spheromak-like configuration. The CME is first advected with the magnetar's wind and later interacts with the ISM, creating a strong forward shock and complicated backwards exhaust flow. Using three-dimensional magnetohydrodynamic simulations, we study various relative configurations of the magnetic field of the CME with respect to the ISM's magnetic field. We show that the dynamics of the forward shock mostly follows the Sedov-Taylor blastwave, while the internal structure of the shocked medium is considerably modified by the back flow, creating a multiple shock configuration. We calculate synthetic synchrotron emissivity maps and light curves using two assumptions: (i) magnetic field compression; (ii) amplification of the magnetic field at the shock.We find that models with magnetic field amplification account better for the observed radio emission.
description: 20 pages, 20 figures, accepted for publication in MNRAS
Supplementary figures for "MarkerScan: Separation and assembly of cobionts sequenced alongside target species in biodiversity genomics projects"
Creators: name: Vancaester, Emmelien
Publisher: name: Zenodo
Year: 2024

description: This document contains figures accompanying the article Vancaester and Blaxter (2024) "MarkerScan: Separation and assembly of cobionts sequenced alongside target species in biodiversity genomics projects" https://doi.org/10.12688/wellcomeopenres.20730.1 published on the Tree of Life gateway at Wellcome Open Research.
Optimal and covariant single-copy LOCC transformation between two two-qubit states
Creators: name: Bradler, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Given two two-qubit pure states characterized by their Schmidt numbers we investigate an optimal strategy to convert the states between themselves with respect to their local unitary invariance. We discuss the efficiency of this transformation and its connection to LOCC convertibility properties between two single-copy quantum states. As an illustration of the investigated transformations we present a communication protocol where in spite of all expectations a shared maximally entangled pair between two participants is the worst quantum resource.
description: 10 pages, minor corrections, accepted for publication in Physics Letters A
Η χρήση των Νέων Τεχνολογιών στην ανάπτυξη δραστηριοτήτων γλωσσικής και διαπολιτισμικής ευαισθητοποίησης
Creators: name: Οικονόμου-Κερασόγλου, Δανάη Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Διαπολιτισμική Εκπαίδευση
Γλωσσική Εκπαίδευση
Νέες Τεχνολογίες
Intercultural Education
Linguistic Education
New Technologies

description: Στην παρούσα εργασία, προσεγγίζονται, η διαπολιτισμικότητα, η γλωσσική εκπαίδευση και οι Νέες Τεχνολογίες. Οι τρεις αυτές έννοιες ορίζονται, συσχετίζονται καθώς και παρουσιάζονται προτεινόμενες δραστηριότητες που μπορούν να εφαρμοστούν σε μαθητές με σκοπό την ενίσχυση της γλωσσικής και διαπολιτισμικής ευαισθητοποίησης. Ακόμη, παρουσιάζονται οι λόγοι επιλογής της ένταξης των Νέων Τεχνολογιών στην εκπαιδευτική διαδικασία από τους εκπαιδευτικούς και πως αυτή ενισχύει την διαπολιτισμική εκπαίδευση. Με αφορμή την δημιουργία ιστοσελίδας, στην οποία προτείνονται οι προαναφερθέντες δραστηριότητες, γίνεται μια παρουσίαση προβληματισμών, ιδεών και ερευνών σχετικά με το ζήτημα της διαπολιτισμικότητας σε συνάρτηση με τη χρήση των Νέων Τεχνολογιών. Συγκεκριμένα, στην εισαγωγή γίνεται μια μικρή παρουσίαση των εννοιών που προαναφέρθηκαν. Έπειτα, γίνεται μια αναλυτική αποσαφήνιση βασικών εννοιών που πραγματεύεται η εργασία. Σε επόμενο κεφάλαιο, έχουμε την σύνδεση όλων των εννοιών. Έπειτα, παρουσιάζονται αναλυτικά ο σκοπός και οι δράσεις που προτείνονται και σχετίζονται με την προώθηση της γλωσσικής και διαπολιτισμικής εκπαίδευσης. Τέλος, παρουσιάζονται τα βασικά βήματα της δημιουργίας της ιστοσελίδας με αντίστοιχες φωτογραφίες όλων των ενεργειών που έγιναν στα πλαίσια της εργασίας
description: This study is approaching interculturalism, language learning and New Technologies. These three concepts are being defined, correlated and also presented suggestive activities that can be applied to students in order to support their linguistic and intercultural awareness. Also, the reasons of selecting new technologies in the educational process by teachers and how this enhances intercultural education, is being presented. On the occasion of the creation of a website, which proposes the aforementioned activities, there is a presentation of concerns, ideas and research on the issue of interculturalism in connection with the use of New Technologies. Specifically, in the introduction there is a small presentation of the concepts mentioned above. Then, there is an analytic clarification of basic concepts dealing with this work. In a next chapter, there is a connection of all concepts. Then, there is an analytical presentation of the objectives and the proposed actions related to the promotion of linguistic and intercultural education. Finally, there is a presentation of the basic steps of creating the site with corresponding photos of all actions undertaken in the context of the work
Additional file 5 of Synthesis and accumulation of amylase-trypsin inhibitors and changes in carbohydrate profile during grain development of bread wheat (Triticum aestivum L.)
Creators: name: Call, Lisa
name: Haider, Elisabeth
name: D’Amico, Stefano
name: Reiter, Elisabeth
name: Grausgruber, Heinrich
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 5 Table S3. Sample details including time of harvest and environmental data from anthesis until harvest.
Can Cluster Evaporation Explain the Missing Thermal Energy in Galaxy Clusters?
Creators: name: Medvedev, Mikhail V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Resent observations of a number of galaxy clusters using the Sunyaev-Zel'dovich effect indicate that about 1/3 of baryonic mass is missing from the hot intracluster medium (ICM), which is significantly larger than the fraction of stars and cool gas, which account for only about 10%. Here we address the question whether the remaining $22\pm10%$ can be accounted for by thermal evaporation of gas from clusters. We have found that evaporation can occur only from the cluster ``surface'', $r\sim r_{\rm vir}$, and not from it's interior. We evaluated particle diffusion through the magnetized ICM for several scenarios of ISM turbulence and found that diffusivity is suppressed by at least a factor of 100 or more, compared to the Spitzer value. Thus, only particles from radii $r\ga0.9r_{\rm vir}$ can evaporate. Diffusion of particles from inside the cluster, $r\la0.9r_{\rm vir}$, takes longer than the Hubble time. This lowers the cluster-averaged fraction of the evaporated hot gas to few percent or less. However, if the missing hot component {\it is indeed} due to evaporation, this strongly constrains the magnetic field structure in the cluster envelope, namely either (i) the gas is completely unmagnetized ($B\le10^{-21}$ gauss) in the cluster halo or (ii) the magnetic fields in the ICM are rather homogeneous and non-turbulent.
description: ApJL, accepted version; 4 pages, 2 figures
An Advection-Diffusion based Filter for Machinable Designs in Topology Optimization
Creators: name: Høghøj, Lukas Christian
name: Träff, Erik Albert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: This paper introduces a simple formulation for topology optimization problems ensuring manufacturability by machining. The method distinguishes itself from existing methods by using the advection-diffusion equation with Robin boundary conditions to perform a filtering of the design variables. The proposed approach is less computationally expensive than the traditional methods used. Furthermore, the approach is easy to implement on unstructured meshes and in a distributed memory setting. Finally, the proposed approach can be performed with few to no continuation steps in any system parameters. Applications are demonstrated with topology optimization on unstructured meshes with up to 64 million elements and up to 29 milling tool directions.
Ultraviolet Regularisation in de Sitter Space
Creators: name: Garbrecht, Bjorn
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The ultraviolet regularisation of Yukawa theory in de Sitter space is considered. We rederive the one-loop effective Candelas-Raine potentials, such that they agree with the corresponding Coleman-Weinberg potentials in flat space. Within supersymmetry, this provides a mechanism for the lifting of flat directions during inflation. For the purpose of calculating loop integrals, we employ the dimensional regularisation procedure by Onemli and Woodard and show explicitly that the resulting self-energies are also invariant. This implies the absence anomalous de Sitter breaking terms, which are reported in the literature. Furthermore, transplanckian effects do not necessarily leave an imprint on the spectrum of cosmic perturbations generated during inflation.
description: 18 pages
An Indirect Genetic Algorithm for Set Covering Problems
Creators: name: Aickelin, Uwe
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper presents a new type of genetic algorithm for the set covering problem. It differs from previous evolutionary approaches first because it is an indirect algorithm, i.e. the actual solutions are found by an external decoder function. The genetic algorithm itself provides this decoder with permutations of the solution variables and other parameters. Second, it will be shown that results can be further improved by adding another indirect optimisation layer. The decoder will not directly seek out low cost solutions but instead aims for good exploitable solutions. These are then post optimised by another hill-climbing algorithm. Although seemingly more complicated, we will show that this three-stage approach has advantages in terms of solution quality, speed and adaptability to new types of problems over more direct approaches. Extensive computational results are presented and compared to the latest evolutionary and other heuristic approaches to the same data instances.
Have we detected the most luminous ULX so far?
Creators: name: Miniutti, G.
name: Ponti, G.
name: Dadina, M.
name: Cappi, M.
name: Malaguti, G.
name: Fabian, A. C.
name: Gandhi, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the XMM-Newton detection of a moderately bright X-ray source superimposed on the outer arms of the inactive spiral galaxy MCG-03-34-63 (z=0.0213). It is clearly offset from the nucleus (by about 19'') but well within the D25 ellipse of the galaxy, just along its bar axis. The field has also been observed with the HST enabling us to compute a lower limit of > 94 on the X-ray to optical flux ratio which, together with the X-ray spectrum of the source, argues against a background AGN. On the other hand, the detection of excess X-ray absorption and the lack of a bright optical counterpart argue against foreground contamination. Short-timescale variability is observed, ruling out the hypothesis of a particularly powerful supernova. If it is associated with the apparent host galaxy, the source is the most powerful ULX detected so far with a peak luminosity of 1.35x10^41 erg/s in the 0.5-7 keV band. If confirmed by future multi-wavelength observations, the inferred bolometric luminosity (about 3x10^41 erg/s) requires a rather extreme beaming factor (larger than 115) to accommodate accretion onto a stellar-mass black hole of 20 solar masses and the source could represent instead one of the best intermediate-mass black hole candidate so far. If beaming is excluded, the Eddington limit implies a mass of >2300 solar masses for the accreting compact object.
description: MNRAS Letters in press; minor correction at the end of Section2
Extraction and Interpretation of gamma N --> Delta Form Factors within a Dynamical Model
Creators: name: Julia-Diaz, B.
name: Lee, T. -S. H.
name: Sato, T.
name: Smith, L. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the dynamical model of Refs. [Phys. Rev. C54, 2660 (1996); C63, 055201 (2001)], we perform an analysis of recent data of pion electroproduction reactions at energies near the Delta(1232) resonance. We discuss possible interpretations of the extracted bare and dressed gamma N --> Delta form factors in terms of relativistic constituent quark models and Lattice QCD calculations. Possible future developments are discussed.
description: 23 pages, 8 figures, minor modifications, some references corrected, version accepted in Phys. Rev. C (http://ebac-theory.jlab.org)
Short-distance constraints for the longitudinal component of the hadronic light-by-light amplitude: an update
Creators: name: Colangelo, Gilberto
name: Hagelstein, Franziska
name: Hoferichter, Martin
name: Laub, Laetitia
name: Stoffer, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We reassess the impact of short-distance constraints for the longitudinal component of the hadronic light-by-light amplitude on the anomalous magnetic moment of the muon, $a_μ=(g-2)_μ/2$, by comparing different solutions that have recently appeared in the literature. In particular, we analyze the relevance of the exact axial anomaly and its impact on $a_μ$ and conclude that it remains rather limited. We show that all recently proposed solutions agree well within uncertainties on the numerical estimate of the impact of short-distance constraints on $a_μ$, despite differences in the concrete implementation. We also take into account the recently calculated perturbative corrections to the massless quark loop to update our estimate and outline the path towards future improvements.
description: 14 pages, 6 figures, 1 table, published version