cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measurement of open heavy-flavour production as a function of charged-particle multiplicity with ALICE at the LHC
Creators: name: Mhlanga, Sibaliso
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Heavy quarks are produced in the early stages of ultra-relativistic hadron collisions via hard scatterings and are an important tool for studying different aspects of Quantum Chromodynamics (QCD) in hadronic collisions. Charged-particle multiplicity gives information on the global characteristics of the event and could be used to characterize particle production mechanisms. In hadronic collisions at Large Hadron Collider (LHC) energies, there is a significant contribution of multi-parton interactions. The measurement of heavy-flavour yields as a function of charged-particle multiplicity gives insight into the mechanisms influencing their production in hadronic collisions at these energies and it is a tool to test the possible influence of multi-parton interactions. Furthermore, the charged-particle multiplicity dependence of open heavy flavours is used to test the ability of QCD theoretical models to describe the data. In ALICE, heavy-flavour production is measured via the hadronic and semi-leptonic decay channels (electrons at central rapidity and muons at forward rapidity). Charged-particle multiplicity is measured at central and forward rapidity. We will present the results on open heavy-flavour production as a function of the charged-particle multiplicity in pp and pPb collisions. Results will be compared to quarkonia measurements as well as theoretical model calculations.
description: 5 pages, 6 figures, High Energy Particle Physics Workshop 2016
Complex central structures suggest complex evolutionary paths for barred S0 galaxies
Creators: name: Dullo, Bililign T.
name: Martínez-Lombilla, Cristina
name: Knapen, Johan H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate three barred lenticular galaxies (NGC 2681, NGC 3945 and NGC 4371) which were previously reported to have complex central structures but without a detailed structural analysis of these galaxies' high-resolution data. We have therefore performed four- to six-component (pseudo-)bulge/disk/bar/ring/point source) decompositions of the composite (Hubble Space Telescope plus ground-based) surface brightness profiles. We find that NGC 2681 hosts three bars, while NGC 3945 and NGC 4371 are double- and single-barred galaxies, respectively, in agreement with past isophotal analysis. We find that the bulges in these galaxies are compact, and have Sérsic indices of $n\sim 2.2 - 3.6$ and stellar masses of $M_{*}$ $\sim 0.28\times10^{10} - 1.1\times10^{10} M_{\sun}$. NGC 3945 and NGC 4371 have intermediate-scale `pseudo-bulges' that are well described by a Sérsic model with low $n \la 0.5$ instead of an exponential ($n=1$) profile as done in the past. We measure emission line fluxes enclosed within 9 different elliptical apertures, finding that NGC 2681 has a LINER-type emission inside $R \sim 3\arcsec$, but the emission line due to star formation is significant when aperture size is increased. In contrast, NGC 3945 and NGC 4371 have composite (AGN plus star forming)- and LINER-type emissions inside and outside $R \sim 2\arcsec$, respectively. Our findings suggest that the three galaxies have experienced a complex evolutionary path. The bulges appear to be consequences of an earlier violent merging event while subsequent disk formation via gas accretion and bar-driven perturbations may account for the build-up of pseudo-bulges, bars, rings and point sources.
description: 12 pages, 6 figures (some with low quality due to arXiv file size limitations), accepted (2016 July 25) for publication in MNRAS
Effect of thin film on the generation of vorticity by surface waves
Creators: name: Parfenyev, V. M.
name: Vergeles, S. S.
name: Lebedev, V. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Recently a theoretical scheme explaining the vorticity generation by surface waves in liquids was developed [S. Filatov et al., Phys. Rev. Lett. 116, 054501 (2016)]. Here we study how a thin (monomolecular) film presented at the surface of liquid affects the generated vorticity. We demonstrate that the vorticity becomes parametrically larger than for the case with a clean surface and now it depends on viscosity of the liquid. We also discuss the motion of particles passively advected by the generated surface flow. The results can be used in different applications: from the analysis of pollutants' diffusion on the ocean surface till the reconstruction of vorticity based on the particle image velocimetry (PIV) measurements.
Jupyter notebook with Fairlearn assignments
Creators: name: Horsman, Sophie
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 401099
subject: Engineering practice and education not elsewhere classified
classificationCode: 460299
subject: Artificial intelligence not elsewhere classified

description: A Jupyter notebook used in the first part of the workshop. Based on: https://fairlearn.org/main/quickstart.html
Ba$_{3}$M$_{x}$Ti$_{3-x}$O$_{9}$(M = Ir, Rh): A family of 5\textit{\textcolor{black}{d}}/4\textit{\textcolor{black}{d}}-based, diluted quantum spin liquids
Creators: name: Kumar, R.
name: Sheptyakov, D.
name: Khuntia, P.
name: Rolfs, K.
name: Freeman, P. G.
name: Rønnow, H. M.
name: Dey, Tusharkanti
name: Baenitz, M.
name: Mahajan, A. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the structural and magnetic properties of the 4}\textit{\textcolor{black}{d }}\textcolor{black}{(M = Rh) based and 5}\textit{\textcolor{black}{d }}\textcolor{black}{(M = Ir) based systems Ba$_{3}$M$_{x}$Ti$_{3-x}$O$_{9}$ (nominally $x$ = 0.5, 1). The studied compositions were found to crystallize in a hexagonal structure with the centrosymmetric space group }$P6_{3}/mmc$.\textcolor{black}{{} The structures comprise of A$_{2}$O$_{9}$ polyhedra (with the A site (possibly) statistically occupied by M and Ti) in which pairs of transition metal ions are stacked along the crystallographic }\textit{\textcolor{black}{c}}\textcolor{black}{-axis. These pairs form triangular bilayers in the $ab$-plane. The magnetic Rh and Ir ions occupy these bilayers, diluted by Ti ions even for $x$ = 1. These bilayers are separated by a triangular layer which is dominantly occupied by Ti ions. From magnetization measurements we infer strong antiferromagnetic couplings for all of the materials but the absence of any spin-freezing or spin-ordering down to 2~K. Further, specific heat measurements down to 0.35~K show no sign of a phase transition for any of the compounds. Based on these thermodynamic measurements we propose the emergence of a quantum spin liquid ground state for Ba$_{3}$Rh$_{0.5}$Ti$_{2.5}$O$_{9}$, and Ba$_{3}$Ir$_{0.5}$Ti$_{2.5}$O$_{9}$, in addition to the already reported Ba$_{3}$IrTi$_{2}$O$_{9}$. }
description: 12 pages, 11 figures, accepted in Phys. Rev. B (regular article)
Digital appendix of the paper titled: “Promoting Sustainable Consumer Behavior in E-commerce: An Empirical Study on the Influence of Gamification on Consumers’ Return Motivation”
Creators: name: Rauh, Caterina
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 350601
subject: Consumer behaviour

description: Digital appendix of the paper titled:
 “Promoting Sustainable Consumer Behavior in E-commerce: An Empirical Study on the Influence of Gamification on Consumers’ Return Motivation”
Solid-state ensemble of highly entangled photon sources at rubidium atomic transitions
Creators: name: Keil, Robert
name: Zopf, Michael
name: Chen, Yan
name: Hoefer, Bianca
name: Zhang, Jiaxiang
name: Ding, Fei
name: Schmidt, Oliver G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Semiconductor InAs/GaAs quantum dots grown by the Stranski-Krastanov method are among the leading candidates for the deterministic generation of polarization entangled photon pairs. Despite remarkable progress in the last twenty years, many challenges still remain for this material, such as the extremely low yield (<1% quantum dots can emit entangled photons), the low degree of entanglement, and the large wavelength distribution. Here we show that, with an emerging family of GaAs/AlGaAs quantum dots grown by droplet etching and nanohole infilling, it is possible to obtain a large ensemble (close to 100%) of polarization-entangled photon emitters on a wafer without any post-growth tuning. Under pulsed resonant two-photon excitation, all measured quantum dots emit single pairs of entangled photons with ultra-high purity, high degree of entanglement (fidelity up to F=0.91, with a record high concurrence C=0.90), and ultra-narrow wavelength distribution at rubidium transitions. Therefore, a solid-state quantum repeater - among many other key enabling quantum photonic elements - can be practically implemented with this new material.
Spatio-Temporal Waveform Design for Multi-user Massive MIMO Downlink with 1-bit Receivers
Creators: name: Gokceoglu, Ahmet
name: Bjornson, Emil
name: Larsson, Erik
name: Valkama, Mikko
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Internet-of-Things (IoT) refers to a high-density network of low-cost low-bitrate terminals and sensors where also low energy consumption is one central feature. As the power-budget of classical receiver chains is dominated by the high-resolution analog-to-digital converters (ADCs), there is a growing interest towards deploying receiver architectures with reduced-bit or even 1-bit ADCs. In this paper, we study waveform design, optimization and detection aspects of multi-user massive MIMO downlink where user terminals adopt very simple 1-bit ADCs with oversampling. In order to achieve spectral efficiency higher than 1 bit/s/Hz per real-dimension, we propose a two-stage precoding, namely a novel quantization precoder followed by maximum-ratio transmission (MRT) or zero-forcing (ZF) type spatial channel precoder which jointly form the multi-user-multiantenna transmit waveform. The quantization precoder outputs are optimized, under appropriate transmitter and receiver filter bandwidth constraints, to provide controlled inter-symbol-interference (ISI) enabling the input symbols to be uniquely detected from 1-bit quantized observations with a low-complexity symbol detector in the absence of noise. An additional optimization constraint is also imposed in the quantization precoder design to increase the robustness against noise and residual inter-user-interference (IUI). The purpose of the spatial channel precoder, in turn, is to suppress the IUI and provide high beamforming gains such that good symbol-error rates (SERs) can be achieved in the presence of noise and interference. Extensive numerical evaluations illustrate that the proposed spatio-temporal precoder based multiantenna waveform design can facilitate good multi-user link performance, despite the extremely simple 1-bit ADCs in the receivers, hence being one possible enabling technology for the future low-complexity IoT networks.
Brachythecium rutabulum - Small Collection
Creators: name: Walkowiak, Radoslaw
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310899
subject: Plant biology not elsewhere classified

description: Radoslaw Janusz Walkowiak. Brachythecium rutabulum - Small Collection. 2023.Applied Biology Hub - Non-Profit. 1418-20230917
Ultrafast Voltage Sampling using Single-Electron Wavepackets
Creators: name: Johnson, N.
name: Fletcher, J. D.
name: Humphreys, D. A.
name: See, P.
name: Griffiths, J. P.
name: Jones, G. A. C.
name: Farrer, I.
name: Ritchie, D. A.
name: Pepper, M.
name: Janssen, T. J. B. M
name: Kataoka, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate an ultrafast voltage sampling technique using a stream of electron wavepackets. Electrons are emitted from a single-electron pump and travel through electron waveguides towards a detector potential barrier. Our electrons sample an instantaneous voltage on the gate upon arrival at the detector barrier. Fast sampling is achieved by minimising the duration that the electrons interact with the barrier, which can be made as small as a few picoseconds. The value of the instantaneous voltage can be determined by varying the gate voltage to match the barrier height to the electron energy, which is used as a stable reference. The test waveform can be reconstructed by shifting the electron arrival time against it. We argue that this method has scope to increase the bandwidth of voltage sampling to 100 GHz and beyond.
description: 9 pages, 4 figures
title: Προβλεπτική συντήρηση μηχανημάτων με περιστρεφόμενα μέρη χρησιμοποιώντας τα συνελικτικά νευρωνικά δίκτυα
title: Rotating machinery condition based maintenance utilizing convolutional neural networks
titleType: AlternativeTitle
Creators: name: Απειρανθίτης, Σταμάτιος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Προβλεπτική συντήρηση
Τεχνητά νευρωνικά δίκτυα
Συνελικτικά νευρωνικά δίκτυα
Βαθιά μάθηση
Προγνωστική συντήρηση
Predictive maintenance
Preventive maintenance
Artificial neural networks
Convolutional neural network
Deep learning
Vibrations

description: Σύμφωνα με το World Economic Forum, το 90% του παγκόσμιου εμπορίου μεταφέρεται δια θαλάσσης με εμπορικά πλοία. Τα πλοία κάθε είδους, αποτελούνται από δεκάδες πολύπλοκα μηχανήματα, κοινός παράγοντας των οποίων είναι τα περιστρεφόμενα μέρη και οι ηλεκτρικοί κινητήρες, τα οποία λειτουργούν σε ένα σύνθετο περιβάλλον με αυξημένη θερμοκρασία και υγρασία, κραδασμούς, κόπωση, και φορτίο. Μία βλάβη ή δυσλειτουργία ενός εκ των μηχανημάτων αυτών, μπορεί να έχει σημαντικές επιπτώσεις στη λειτουργία, αλλά ακόμη και στη ασφάλεια του πλοίου και κατά συνέπεια στην ασφάλεια του πληρώματος και του περιβάλλοντος. Η ναυτιλιακή βιομηχανία ξοδεύει τεράστια ποσά στην προληπτική συντήρηση και επισκευή, ώστε να διατηρεί τα πλοία όχι μόνο αξιόπλοα, αλλά πάνω από όλα ασφαλή. Στην παρούσα εργασία θα παρουσιάσουμε τα οικονομοτεχνικά οφέλη της προγνωστικής συντήρησης σε σχέση με την προληπτική και την επισκευαστική συντήρηση που ως σήμερα εφαρμόζεται στα πλοία. Θα δούμε, πως μελετώντας την πραγματική λειτουργική κατάσταση ενός μηχανήματος και εκμεταλλευόμενοι την σύγχρονη τεχνολογία και την Τεχνητή Νοημοσύνη, μπορούμε να προβλέψουμε πιθανές βλάβες, σε αρχικό ακόμα στάδιο, παρέχοντας έτσι τον απαραίτητο χρόνο για τον σωστό προγραμματισμό της απαραίτητης συντήρησης ή επισκευής. Στην πορεία της εργασίας θα προτείνουμε και αναπτύξουμε ένα συνελικτικό νευρωνικό δίκτυο, το οποίο θα το τροφοδοτήσουμε με ακατέργαστες μετρήσεις κραδασμών που έχουν συλλεγεί από τους σφαιροτριβείς ενός κινητήρα σε εργαστηριακό περιβάλλον. Στη συνέχεια θα μελετήσουμε αν και πως το προτεινόμενο δίκτυο μπορεί να ανιχνεύσει τη λειτουργική κατάσταση των σφαιροτριβέων, αλλά και να κατηγοριοποιήσει τυχών βλάβες. Τα συνελικτικά νευρωνικά δίκτυα αποτελούν τομέα των τεχνητών νευρωνικών δικτύων και της βαθιάς μάθησης και στις μέρες μας τυγχάνουν ιδιαίτερης προσοχής στο χώρο της αναγνώρισης εικόνων και φωνής.
Abundances in a sample of turnoff and subgiant stars in NGC 6121 (M4)
Creators: name: Spite, Monique
name: Spite, Francois
name: Gallagher, Andrew J.
name: Monaco, Lorenzo
name: Bonifacio, Piercarlo
name: Caffau, Elisabetta
name: Villanova, Sandro
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: {The aim of this work is to investigate the relations between the abundances of different elements in the globular cluster M4, selected for its uniform deficiency of iron, to explore the best models explaining the pattern of these observed abundances. Moreover, in turnoff stars, the abundances of the elements are not suspected to be affected by internal mixing. In M4, using low and moderate resolution spectra obtained for 91 turnoff (and subgiant) stars with the ESO FLAMES-Giraffe spectrograph, we have extended previous measurements of abundances (of Li, C and Na) to other elements (C, Si, Ca, Sr and Ba), using model atmosphere analysis. We have also studied the influence of the choice of the microturbulent velocity. Firstly, the peculiar turnoff star found to be very Li-rich in a previous paper does not show any other abundance anomalies relative to the other turnoff stars in M4. ~Secondly, an anti-correlation between C and Na has been detected, the slope being significative at more than $3σ$. This relation between C and Na is in perfect agreement with the relation found in giant stars selected below the RGB bump. ~Thirdly, the strong enrichment of Si and of the neutron-capture elements Sr and Ba, already observed in the giants in M4, is confirmed. ~Finally, the relations between Li, C, Na, Sr and Ba constrain the enrichment processes of the observed stars. The abundances of the elements in the turnoff stars appear to be compatible with production processes by massive AGBs, but are also compatible with the production of second generation elements (like Na) and low Li produced by, for example, fast rotating massive stars.
description: 9 pages, 10 figures, accepted to A&A
Improved model selection based on AIC-type criteria
Creators: name: Hughes, Anthony William
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
title: Σύστημα ελέγχου και ανάλυσης οπτικοακουστικών πηγών
title: Control and analysis system of audiovisual sources
titleType: AlternativeTitle
Creators: name: Μιχαλακόπουλος, Γεώργιος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Οπτικοακουστικές πηγές
subject: Ανάλυση και έλεγχος
subject: Ανάπτυξη συστήματος
subject: Διεπαφή χρήστη

description: Η παρούσα διπλωματική εργασία εστιάζει στην ανάπτυξη και τον έλεγχο ενός συστήματος ανάλυσης και ελέγχου οπτικοακουστικών πηγών, χρησιμοποιώντας ως κεντρική πλατφόρμα αυτή της εταιρείας Extron. Τα οπτικοακουστικά συστήματα έχουν ευρεία εφαρμογή σε ποικίλους τομείς, όπως συνεδριακά κέντρα, αίθουσες συνεδριάσεων, εκπαιδευτικά ιδρύματα και εταιρικά περιβάλλοντα. Αρχικά πραγματοποιείται μια επισκόπηση της σχετικής βιβλιογραφίας και παρουσιάζονται οι τρέχουσες μέθοδοι και τεχνολογίες στον τομέα του ελέγχου οπτικοακουστικών πηγών. Στη συνέχεια προτείνεται ένα νέο σύστημα ελέγχου που βασίζεται στον εξοπλισμό της εταιρείας Extron, προσφέροντας προηγμένες λειτουργίες και απόδοση. Ο σχεδιασμός του συστήματος περιλαμβάνει την επιλογή και την ενσωμάτωση κατάλληλων συσκευών και εξοπλισμού της Extron, καθώς και την ανάπτυξη προηγμένων διεπαφών και λειτουργιών ελέγχου. Επιπλέον, πραγματοποιούνται πειράματα και αξιολογήσεις του συστήματος, με στόχο τη βελτιστοποίηση της απόδοσης, όπως και επίσης την άντληση δεδομένων από αυτά. Η ανάπτυξη ενός αποτελεσματικού συστήματος ελέγχου οπτικοακουστικών πηγών μπορεί να βελτιώσει την εμπειρία του χρήση σε ποικίλους χώρους και περιβάλλοντα.
Membrane tubulation by elongated and patchy nanoparticles
Creators: name: Raatz, Michael
name: Weikl, Thomas R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Advances in nanotechnology lead to an increasing interest in how nanoparticles interact with biomembranes. Nanoparticles are wrapped spontaneously by biomembranes if the adhesive interactions between the particles and membranes compensate for the cost of membrane bending. In the last years, the cooperative wrapping of spherical nanoparticles in membrane tubules has been observed in experiments and simulations. For spherical nanoparticles, the stability of the particle-filled membrane tubules strongly depends on the range of the adhesive particle-membrane interactions. In this article, we show via modeling and energy minimization that elongated and patchy particles are wrapped cooperatively in membrane tubules that are highly stable for all ranges of the particle-membrane interactions, compared to individual wrapping of the particles. The cooperative wrapping of linear chains of elongated or patchy particles in membrane tubules may thus provide an efficient route to induce membrane tubulation, or to store such particles in membranes.
description: 11 pages, 6 figures
title: Die Anwendung und Kalibrierung eines computersimulierten Raumakustikmodells einer Musikschule: eine Fallstudie
Creators: name: Schreiner, Lorenz
Publisher: name: TU Wien
Year: 2023
Subjects: subject: Raumakustik
subject: Musikschule
subject: Nachhallzeit
subject: ODEON
subject: Kalibrierung
subject: room acoustics
subject: music school
subject: reverberation time
subject: ODEON
subject: calibration

description: Die vorliegende Fallstudie ist eine Gegenüberstellung und Analyse der Ergebnisse von Nachhallzeitmessungen und den Simulationsergebnissen der Auralisations- software Odeon. Die Messungen fanden in einer Musikschule statt, die vier unterschiedlich dimensionierte Unterrichtsräume bzw. Veranstaltungsräume betreibt. Ein virtuelles Raummodell wurde erstellt und konnte dank der großen Materialdatenbank der Software Odeon mit passenden Oberflächenmaterialen versehen und berechnet werden. Aufgrund der ersten Simulationen wurde klar, dass teilweise deutliche Anpassungen notwendig waren, um den Messergebnissen näher zu kommen. Die Anpassungen bzw. Kalibrierungsschritte wurden genau dokumentiert und konnten durch die vier verschiedenen gemessenen Räume überprüft werden. Mit Hilfe der kalibrierten Simulationen konnten Vorschläge zur akustischen Verbesserung der Räume nach den Standards der ÖNORM B3822 erarbeitet werden.
description: The present case study is a comparison and analysis of the results of the reverberation time measurements and the simulation results of the auralisation software Odeon. The measurements took place in a music school that operates four differently sized rehearsal and event rooms. A virtual room model was calculated with suitable surface materials, thanks to the large material database of Odeon. Based on the first simulations it became clear that in some cases significant adjustments were necessary to get closer to the measurement results. The adjustments and calibration steps were precisely documented and were cross-checked through the four different measured rooms. With the calibrated room simulations, it was possible to develop proposals for the acoustic improvement of the rooms according to the standards of ÖNORM B3822.
Onset of negative dispersion in one-component-plasma revisited
Creators: name: Khrapak, Sergey
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A simple approach to describe the long-wavelength dispersion of the longitudinal (plasmon) mode of the classical one-component-plasma (OCP), with the main objective to correctly capture the onset of negative dispersion, is proposed. The approach is applicable to both three-dimensional and two-dimensional OCP. The predicted onset of negative dispersion compares well with the available results from numerical simulations and more sophisticated theoretical models.
description: to be published in Physics of Plasmas
CHEERS: Future perspectives for abundance measurements in clusters with XMM-Newton
Creators: name: de Plaa, J.
name: Mernier, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The CHEERS (CHEmical Enrichment RGS Sample) observations of clusters of galaxies with XMM-Newton have shown to be valuable to constrain the chemical evolution of the universe. The soft X-ray spectrum contains lines of the most abundant metals from N to Ni, which provide relatively accurate abundances that can be compared to supernova enrichment models. The accuracy of the abundances is currently limited by systematic uncertainties introduced by the available instruments and uncertainties in the modeling of the spectra, which are of the order of 20-30%. We discuss the possible gain of extending the current samples at low and high redshift. We conclude that expanding the samples would be expensive in terms of exposure time, but will not yield significantly improved results, because the current samples already reach the systematic limits. New instrumentation, like Astro-H2 and ATHENA, and improvements to the atomic databases are needed to make significant advances in this field.
description: 7 pages, accepted for publication in Astronomische Nachrichten as part of the proceedings of the workshop 'XMM-Newton: The Next Decade', ESAC, Madrid, Spain, 9 - 11 May 2016
Government-producer-user interactions in new product development in the Chinese steel industry
Creators: name: Huang, Xueli
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
Crossover from magnetostatic to exchange coupling in La0.67Ca0.33MnO3/YBa2Cu3O7/La0.67Ca0.33MnO3 heterostructures
Creators: name: Porwal, Rajni
name: Gupta, Anurag
name: Budhani, R. C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The influence of YBa2Cu3O4 (YBCO) superconductor layer (S-layer) with varying thickness d-YBCO = 20 to 50 nm on the magnetic coupling between two La0.67Ca0.33MnO3 (LCMO) ferromagnet layers (F-layer, thickness d-LCMO = 50 nm) in F/S/F heterostructures (HSs) was investigated by measuring global magnetization (M) in a temperature (T) range = 2 - 300 K and magnetic field (H) range = 0 - 10 kOe. All the HSs were superconducting with critical temperature (Tc) decreasing from = 78 to 36 K with decrease in d-YBCO, whereas the ferromagnetic ordering temperature Tm = 250 K did not change much. Systematically measured M-H loops of all HSs at both T > Tc and T < Tc show three main results- (a) the two step magnetic reversal above Tc converts into a four step reversal below Tc in HSs with d-YBCO >= 30 nm, (b) the magnetic field corresponding to the additional two switching steps and their magnitude show characteristic evolution with T and d-YBCO and (c) the HS with d-YBCO = 20 nm shows radically different behaviour, where the two step magnetic reversal above Tc continues to persist below Tc and converts into a single step reversal at T << Tc. The first two results indicate magnetostatic coupling between the magnetic domains and the vortices across the two F/S interfaces resulting in reversal dynamics different from that deep within the LCMO layers. Whereas, the result c reveals indirect exchange coupling between LCMO layers through the superconducting YBCO layer, which is a clear experimental evidence of coexistence of ferromagnetism and superconductivity in nm scale F/S/F HSs expected theoretically by C.A.R. Sa de Melo (Physica C 387, 17-25 (2003)).
description: 23 pages, 7 figures, accepted in JPCM
Uniform boundary regularity in almost-periodic homogenization
Creators: name: Zhuge, Jinping
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B27, 35J57, 35B65

description: In the present paper, we generalize the theory of quantitative homogenization for second-order elliptic systems with rapidly oscillating coefficients in $APW^2(\mathbb{R}^d)$, which is the space of almost-periodic functions in the sense of H. Weyl. We obtain the large scale uniform boundary Lipschitz estimate, for both Dirichlet and Neumann problems in $C^{1,α}$ domains. We also obtain large scale uniform boundary Hölder estimates in $C^{1,α}$ domains and $L^2$ Rellich estimates in Lipschitz domains.
description: 29 pages
An OpenSHMEM Implementation for the Adapteva Epiphany Coprocessor
Creators: name: Ross, James
name: Richie, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: This paper reports the implementation and performance evaluation of the OpenSHMEM 1.3 specification for the Adapteva Epiphany architecture within the Parallella single-board computer. The Epiphany architecture exhibits massive many-core scalability with a physically compact 2D array of RISC CPU cores and a fast network-on-chip (NoC). While fully capable of MPMD execution, the physical topology and memory-mapped capabilities of the core and network translate well to Partitioned Global Address Space (PGAS) programming models and SPMD execution with SHMEM.
description: 14 pages, 9 figures, OpenSHMEM 2016: Third workshop on OpenSHMEM and Related Technologies
FOXTAIL: Modeling the nonlinear interaction between Alfvén eigenmodes and energetic particles in tokamaks
Creators: name: Tholerus, Emmi
name: Johnson, Thomas
name: Hellsten, Torbjörn
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: FOXTAIL is a new hybrid magnetohydrodynamic-kinetic code used to describe interactions between energetic particles and Alfvén eigenmodes in tokamaks with realistic geometries. The code simulates the nonlinear dynamics of the amplitudes of individual eigenmodes and of a set of discrete markers in five-dimensional phase space representing the energetic particle distribution. Action-angle coordinates of the equilibrium system are used for efficient tracing of energetic particles, and the particle acceleration by the wave fields of the eigenmodes is Fourier decomposed in the same angles. The eigenmodes are described using temporally constant eigenfunctions with dynamic complex amplitudes. Possible applications of the code are presented, e.g., making a quantitative validity evaluation of the one-dimensional bump-on-tail approximation of the system. Expected effects of the fulfillment of the Chirikov criterion in two-mode scenarios have also been verified.
description: Preprint submitted to Computer Physics Communications on June 3, 2016
C-Share: Optical Circuits Sharing for Software-Defined Data-Centers
Creators: name: Ben-Itzhak, Yaniv
name: Caba, Cosmin
name: Schour, Liran
name: Vargaftik, Shay
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Integrating optical circuit switches in data-centers is an on-going research challenge. In recent years, state-of-the-art solutions introduce hybrid packet/circuit architectures for different optical circuit switch technologies, control techniques, and traffic rerouting methods. These solutions are based on separated packet and circuit planes which do not have the ability to utilize an optical circuit with flows that do not arrive from or delivered to switches directly connected to the circuit's end-points. Moreover, current SDN-based elephant flow rerouting methods require a forwarding rule for each flow, which raise scalability issues. In this paper, we present C-Share -- a practical, scalable SDN-based circuit sharing solution for data center networks. C-Share inherently enable elephant flows to share optical circuits by exploiting a flat upper tier network topology. C-Share is based on a scalable and decoupled SDN-based elephant flow rerouting method comprised of elephant flow detection, tagging and identification, which is utilized by using a prevalent network sampling method (e.g., sFlow). C-Share requires only a single OpenFlow rule for each optical circuit, and therefore significantly reduces the required OpenFlow rule entry footprint and setup rule rate. It also mitigates the OpenFlow outbound latency for subsequent elephant flows. We implement a proof-of-concept system for C-Share based on Mininet, and test the scalability of C-Share by using an event driven simulation. Our results show a consistent increase in the mice/elephant flow separation in the network which, in turn, improves both network throughput and flow completion time.
Enhanced superconductivity in hole-doped Nb$_{2}$PdS$_{5}$
Creators: name: Chen, Qian
name: Yang, Xiaohui
name: Yang, Xiaojun
name: Chen, Jian
name: Shen, Chenyi
name: Zhang, Pan
name: Li, Yupeng
name: Tao, Qian
name: Xu, Zhu-An
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We synthesized a series of Nb$_{2}$Pd$_{1-x}$Ru$_{x}$S$_{5}$ polycrystalline samples by a solid-state reaction method and systematically investigated the Ru-doping effect on superconductivity by transport and magnetic measurements. It is found that superconductivity is enhanced with Ru doping and is quite robust upon disorder. Hall coefficient measurements indicate that the charge transport is dominated by hole-type charge carriers similar to the case of Ir doping, suggesting multi-band superconductivity. Upon Ru or Ir doping, \emph H$_{c2}$/$\emph T_c$ exhibits a significant enhancement, exceeding the Pauli paramagnetic limit value by a factor of approximately 4. A comparison of $T_c$ and the upper critical field ($H_{c2}$) amongst the different doping elements on Pd site, reveals a significant role of spin--orbit coupling.
description: 6 pages, 5 figures
Understanding the effects of early-life nutritional stress on the response to limited and unpredictable food in adult European starlings
Creators: name: Coriandre Ayrinhac
name: Pascual, Kristina
name: Bateson, Melissa
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Psychiatry and Psychology
subject: Medicine and Health Sciences
subject: Social and Behavioral Sciences
subject: Psychological Phenomena and Processes
subject: Life Sciences
subject: Ecology and Evolutionary Biology
subject: Animal Sciences
subject: Psychology
subject: FOS: Psychology
subject: Biological Psychology
subject: Behavior and Behavior Mechanisms
subject: Developmental Psychology
subject: Predictive adaptive response
subject: Silver spoon hypothesis
subject: Telomere dynamics
subject: Developmental programming
subject: European starling
subject: Food insecurity
subject: Insurance hypothesis

description: This registration describes a study done when a cohort of European starlings hand-reared in 2022 were approximately one year old to explore the effects of adult food insecurity.
Individual welfare measurement and price indexes : a role for the marginal utility of income and cardinal preferences
Creators: name: Hird, Tom
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
Deep Learning-based Sentiment Analysis of Olympics Tweets
Creators: name: Bandyopadhyay, Indranil
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Sentiment Analysis
subject: Sentiment Analysis/classification
subject: Deep Learning/classification
subject: Neural Networks, Computer

description: Sentiment analysis (SA) is an approach of natural language processing (NLP) for determining a text's emotional tone by analyzing subjective information such as views, feelings, and attitudes toward specific topics, products, services, events, or experiences. This study attempts to develop an advanced deep learning (DL) model for SA to understand global audience emotions through tweets in the context of the Olympic Games. The findings represent global attitudes around the Olympics and contribute to advancing the SA models. We have used NLP for tweet pre-processing and sophisticated DL models for arguing with SA; this research enhances the reliability and accuracy of sentiment classification. The study focuses on data selection, preprocessing, visualization, feature extraction, and model building, featuring a baseline Naïve Bayes (NB) model and three advanced DL models: Convolutional Neural Network (CNN), Bidirectional Long Short-Term Memory (BiLSTM), and Bidirectional Encoder Representations from Transformers (BERT). The results of the experiments show that the BERT model can efficiently classify sentiments related to the Olympics, achieving the highest accuracy of 99.23%.
Phaseless computational imaging with a radiating metasurface
Creators: name: Fromenteze, Thomas
name: Liu, Xiaojun
name: Boyarsky, Michael
name: Gollub, Jonah
name: Smith, David R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Physics (physics.class-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Computational imaging modalities support a simplification of the active architectures required in an imaging system and these approaches have been validated across the electromagnetic spectrum. Recent implementations have utilized pseudo-orthogonal radiation patterns to illuminate an object of interest---notably, frequency-diverse metasurfaces have been exploited as fast and low-cost alternative to conventional coherent imaging systems. However, accurately measuring the complex-valued signals in the frequency domain can be burdensome, particularly for sub-centimeter wavelengths. Here, computational imaging is studied under the relaxed constraint of intensity-only measurements. A novel 3D imaging system is conceived based on 'phaseless' and compressed measurements, with benefits from recent advances in the field of phase retrieval. In this paper, the methodology associated with this novel principle is described, studied, and experimentally demonstrated in the microwave range. A comparison of the estimated images from both complex valued and phaseless measurements are presented, verifying the fidelity of phaseless computational imaging.
description: 18 pages, 18 figures, article
OpenCL + OpenSHMEM Hybrid Programming Model for the Adapteva Epiphany Architecture
Creators: name: Richie, David
name: Ross, James
Publisher: name: arXiv
Year: 2016
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: There is interest in exploring hybrid OpenSHMEM + X programming models to extend the applicability of the OpenSHMEM interface to more hardware architectures. We present a hybrid OpenCL + OpenSHMEM programming model for device-level programming for architectures like the Adapteva Epiphany many-core RISC array processor. The Epiphany architecture comprises a 2D array of low-power RISC cores with minimal uncore functionality connected by a 2D mesh Network-on-Chip (NoC). The Epiphany architecture offers high computational energy efficiency for integer and floating point calculations as well as parallel scalability. The Epiphany-III is available as a coprocessor in platforms that also utilize an ARM CPU host. OpenCL provides good functionality for supporting a co-design programming model in which the host CPU offloads parallel work to a coprocessor. However, the OpenCL memory model is inconsistent with the Epiphany memory architecture and lacks support for inter-core communication. We propose a hybrid programming model in which OpenSHMEM provides a better solution by replacing the non-standard OpenCL extensions introduced to achieve high performance with the Epiphany architecture. We demonstrate the proposed programming model for matrix-matrix multiplication based on Cannon's algorithm showing that the hybrid model addresses the deficiencies of using OpenCL alone to achieve good benchmark performance.
description: 12 pages, 5 figures, OpenSHMEM 2016: Third workshop on OpenSHMEM and Related Technologies
Some aspects of the antecedents and manifestation of local rules in social organisation
Creators: name: Haslett, Tim
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
Numerical Inversion of SRNF Maps for Elastic Shape Analysis of Genus-Zero Surfaces
Creators: name: Laga, Hamid
name: Xie, Qian
name: Jermyn, Ian H.
name: Srivastava, Anuj
Publisher: name: arXiv
Year: 2016
Subjects: subject: Graphics (cs.GR)
subject: Computational Geometry (cs.CG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Recent developments in elastic shape analysis (ESA) are motivated by the fact that it provides comprehensive frameworks for simultaneous registration, deformation, and comparison of shapes. These methods achieve computational efficiency using certain square-root representations that transform invariant elastic metrics into Euclidean metrics, allowing for applications of standard algorithms and statistical tools. For analyzing shapes of embeddings of $\mathbb{S}^2$ in $\mathbb{R}^3$, Jermyn et al. introduced square-root normal fields (SRNFs) that transformed an elastic metric, with desirable invariant properties, into the $\mathbb{L}^2$ metric. These SRNFs are essentially surface normals scaled by square-roots of infinitesimal area elements. A critical need in shape analysis is to invert solutions (deformations, averages, modes of variations, etc) computed in the SRNF space, back to the original surface space for visualizations and inferences. Due to the lack of theory for understanding SRNFs maps and their inverses, we take a numerical approach and derive an efficient multiresolution algorithm, based on solving an optimization problem in the surface space, that estimates surfaces corresponding to given SRNFs. This solution is found effective, even for complex shapes, e.g. human bodies and animals, that undergo significant deformations including bending and stretching. Specifically, we use this inversion for computing elastic shape deformations, transferring deformations, summarizing shapes, and for finding modes of variability in a given collection, while simultaneously registering the surfaces. We demonstrate the proposed algorithms using a statistical analysis of human body shapes, classification of generic surfaces and analysis of brain structures.
Learning from the New Higgs-like Scalar before It Vanishes
Creators: name: Bauer, Martin
name: Butter, Anja
name: Gonzalez-Fraile, Juan
name: Plehn, Tilman
name: Rauch, Michael
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by a di-photon anomaly observed by ATLAS and CMS we develop an SFitter analysis for a combined electroweak-Higgs sector, and a scalar portal at the LHC. The theoretical description is based on the linear effective Lagrangian for the Higgs and gauge fields, combined with an additional singlet scalar. The key feature is the extraction of reliable information on the portal structure of the combined scalar potential. For the specific di-photon anomaly we find that the new state might well form such a Higgs portal. To obtain more conclusive results we define and test the connection of the Wilson coefficients in the Higgs and heavy scalar sectors, as suggested by a portal setup.
description: 18 pages, 4 figures
title: Unsilencing and Laying Bare: A Comparative Study of Mother to Mother by Magona and Things Ive Been Silent About by Nafisi
Creators: name: Bayat Barooni, Arezoo
Publisher: name: Georgia State University
Year: 2025

description:
Unsilencing and Laying Bare: A Comparative Study of Mother to Mother by Magona and Things Ive Been Silent About by Nafisi explores how these authors employ literature to challenge oppressive regimes and reclaim suppressed histories in apartheid South Africa and post-revolutionary Iran, respectively. Through close textual analysis and comparative study, this thesis examines recurring themes of identity, trauma, motherhood, resistance, and the search for freedom. Employing feminist and postcolonial frameworks, including theories by Butler, Ahmed, Gilmore, Trouillot, Mohanty, Royster and Kirsch, the research uncovers layers of personal and collective struggle in both works. By situating these narratives within their specific socio-political contexts, the study illuminates how womens voices can serve as powerful tools for resistance and cross-cultural understanding. This comparative approach contributes to literary, gender, and postcolonial studies by underscoring the transformative power of womens narratives in shaping cultural memory and identity under oppressive regimes.
Geometric control theory for quantum back-action evasion
Creators: name: Yokotera, Yu
name: Yamamoto, Naoki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Engineering a sensor system for detecting an extremely tiny signal such as the gravitational-wave force is a very important subject in quantum physics. A major obstacle to this goal is that, in a simple detection setup, the measurement noise is lower bounded by the so-called standard quantum limit (SQL), which is originated from the intrinsic mechanical back-action noise. Hence, the sensor system has to be carefully engineered so that it evades the back-action noise and eventually beats the SQL. In this paper, based on the well-developed geometric control theory for classical disturbance decoupling problem, we provide a general method for designing an auxiliary (coherent feedback or direct interaction) controller for the sensor system to achieve the above-mentioned goal. This general theory is applied to a typical opto-mechanical sensor system. Also, we demonstrate a controller design for a practical situation where several experimental imperfections are present.
description: 13 pages, 9 figures
Mapping New Discoveries: iNaturalist and Biodiversity Data
Creators: name: Ewing, Rhea
name: Esposito, Lauren
name: Monfils, Anna
Publisher: name: QUBES Educational Resources
Year: 2024

description: Meet Lauren Esposito, the Curator of Arachnology at
the California Academy of Sciences. Learn how they use community science to inform new species discovery.
A Comprehensive Comparative Study of Word and Sentence Similarity Measures
Creators: name: Atoum, Issa
name: Otoom, Ahmed
name: Kulathuramaiyer, Narayanan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Retrieval (cs.IR)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Sentence similarity is considered the basis of many natural language tasks such as information retrieval, question answering and text summarization. The semantic meaning between compared text fragments is based on the words semantic features and their relationships. This article reviews a set of word and sentence similarity measures and compares them on benchmark datasets. On the studied datasets, results showed that hybrid semantic measures perform better than both knowledge and corpus based measures.
description: 7 pages,4 figures