cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Penalty parameter selection and asymmetry corrections to Laplace approximations in Bayesian P-splines models
Creators: name: Lambert, Philippe
name: Gressani, Oswaldo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Laplacian-P-splines (LPS) associate the P-splines smoother and the Laplace approximation in a unifying framework for fast and flexible inference under the Bayesian paradigm. Gaussian Markov field priors imposed on penalized latent variables and the Bernstein-von Mises theorem typically ensure a razor-sharp accuracy of the Laplace approximation to the posterior distribution of these variables. This accuracy can be seriously compromised for some unpenalized parameters, especially when the information synthesized by the prior and the likelihood is sparse. We propose a refined version of the LPS methodology by splitting the latent space in two subsets. The first set involves latent variables for which the joint posterior distribution is approached from a non-Gaussian perspective with an approximation scheme that is particularly well tailored to capture asymmetric patterns, while the posterior distribution for parameters in the complementary latent set undergoes a traditional treatment with Laplace approximations. As such, the dichotomization of the latent space provides the necessary structure for a separate treatment of model parameters, yielding improved estimation accuracy as compared to a setting where posterior quantities are uniformly handled with Laplace. In addition, the proposed enriched version of LPS remains entirely sampling-free, so that it operates at a computing speed that is far from reach to any existing Markov chain Monte Carlo approach. The methodology is illustrated on the additive proportional odds model with an application on ordinal survey data.
Time Evolution of Uniform Sequential Circuits
Creators: name: Astrakhantsev, Nikita
name: Lin, Sheng-Hsuan
name: Pollmann, Frank
name: Smith, Adam
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Simulating time evolution of generic quantum many-body systems using classical numerical approaches has an exponentially growing cost either with evolution time or with the system size. In this work, we present a polynomially scaling hybrid quantum-classical algorithm for time evolving a one-dimensional uniform system in the thermodynamic limit. This algorithm uses a layered uniform sequential quantum circuit as a variational ansatz to represent infinite translation-invariant quantum states. We show numerically that this ansatz requires a number of parameters polynomial in the simulation time for a given accuracy. Furthermore, this favourable scaling of the ansatz is maintained during our variational evolution algorithm. All steps of the hybrid optimization are designed with near-term digital quantum computers in mind. After benchmarking the evolution algorithm on a classical computer, we demonstrate the measurement of observables of this uniform state using a finite number of qubits on a cloud-based quantum processing unit. With more efficient tensor contraction schemes, this algorithm may also offer improvements as a classical numerical algorithm.
description: 19 pages, 14 figures
title: Moral Accounts: The Narrative Reconstruction of the Alcoholic Experience in a Clinical Setting
Creators: name: Waller, Seta
Publisher: name: Goldsmiths, University of London
Year: 1996

description: This thesis is a sociological study of the narrative reconstruction of alcoholic patients' accounts of their life experiences including drinking, in a clinical setting. The research data consist, first, of forty tape-recorded, unstructured interviews with alcoholic patients admitted to a 4-week intensive treatment programme in an Alcohol Treatment Unit, based in a psychiatric hospital. Second, professionals' letters referring to alcoholic patients constitute additional data for the analysis. The focus of the study is to describe what is accomplished by patients' and professionals' discourses, and how it is done. Following arguments developed by Voysey (1975), Cuff (1980) and Baruch (1981) , patients' accounts of their life experiences are treated as situated accounts constructed to display respondents as morally adequate individuals. Professionals' discourses are treated as discourses which also constitute patients as morally responsible persons. The qualitative analysis of the narrative structure of alcoholic patients' accounts, through the Membership Categorisation Device (Sacks, 1972), indicates patients' skills and competence in producing a new version of reality, using the appropriate vocabulary (Mills, 1940) for a clinical setting. Some tabulations of categories used in descriptions have helped to show consistency throughout the data. Some explanations for the findings are explored in terms of the context, gender differences and the ambiguity found in formulations of alcoholism.
The origin of the excess transit absorption in the HD 189733 system: planet or star?
Creators: name: Barnes, J. R.
name: Haswell, C. A.
name: Staab, D.
name: Anglada-Escudé, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We have detected excess absorption in the emission cores of Ca II H & K during transits of HD 189733b for the first time. Using observations of three transits we investigate the origin of the absorption, which is also seen in Hα and the Na I D lines. Applying differential spectrophotometry methods to the Ca II H and Ca II K lines combined, using respective passband widths of $Δλ$ = 0.4 & 0.6 Å yields excess absorption of t$_d$ = 0.0074 $\pm$ 0.0044 (1.7$σ$; Transit 1) and 0.0214 +/- 0.0022 (9.8$σ$; Transit 2). Similarly, we detect excess Hα absorption in a passband of width $Δλ$ = 0.7 Å, with t$_d$ = 0.0084 $\pm$ 0.0016 (5.2$σ$) and 0.0121 $\pm$ 0.0012 (9.9$σ$). For both lines, Transit 2 is thus significantly deeper. Combining all three transits for the Na I D lines yields excess absorption of t$_d$ = 0.0041 $\pm$ 0.0006 (6.5$σ$). By considering the time series observations of each line, we find that the excess apparent absorption is best recovered in the stellar reference frame. These findings lead us to postulate that the main contribution to the excess transit absorption in the differential light curves arises because the normalising continuum bands form in the photosphere, whereas the line cores contain a chromospheric component. We can not rule out that part of the excess absorption signature arises from the planetary atmosphere, but we present evidence which casts doubt on recent claims to have detected wind motions in the planet's atmosphere in these data.
description: 19 pages, 10 figures, Accepted for publication in MNRAS (July 2016)
Slow-growth approximation for near-wall patch representation of wall-bounded turbulence
Creators: name: Carney, Sean P.
name: Moser, Robert D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Wall-bounded turbulent shear flows are known to exhibit universal small-scale dynamics that are modulated by large-scale flow structures. Strong pressure gradients complicate this characterization, however; they can cause significant variation of the mean flow in the streamwise direction. For such situations, we perform asymptotic analysis of the Navier-Stokes equations to inform a model for the effect of mean flow growth on near-wall turbulence in a small domain localized to the boundary. The asymptotics are valid whenever the viscous length scale is small relative to the length scale over which the mean flow varies. To ensure the correct momentum environment, a dynamic procedure is introduced that accounts for the additional sources of mean momentum flux through the upper domain boundary arising from the asymptotic terms. Comparisons of the model's low-order, single-point statistics with those from direct numerical simulation and well-resolved large eddy simulation of adverse-pressure gradient turbulent boundary layers indicate the asymptotic model successfully accounts for the effect of boundary layer growth on the small-scale near-wall turbulence.
description: Final, post-revision version
Starburst Nuclei as Light Dark Matter Laboratories
Creators: name: Ambrosone, Antonio
name: Chianese, Marco
name: Fiorillo, Damiano F. G.
name: Marinelli, Antonio
name: Miele, Gennaro
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Starburst galaxies are well-motivated astrophysical emitters of high-energy gamma-rays. They are well-known cosmic-ray "reservoirs", thanks to their large magnetic fields which confine high-energy protons for $\sim 10^5$ years. Over such long times, cosmic-ray transport can be significantly affected by scatterings with sub-GeV dark matter. Here we point out that this scattering distorts the cosmic-ray spectrum, and the distortion can be indirectly observed by measuring the gamma-rays produced by cosmic-rays via hadronic collisions. Present gamma-ray data show no sign of such a distortion, leading to stringent bounds on the cross section between protons and dark matter. These are highly complementary with current bounds and have large room for improvement with the future gamma-ray measurements in the 0.1-10 TeV range from the Cherenkov Telescope Array, which can strengthen the limits by as much as two orders of magnitude.
description: 17 pages, 7 figures. v2: version published in Physical Review Letters
Smartphones in a Microwave: Formal and Experimental Feasibility Study on Fingerprinting the Corona-Warn-App
Creators: name: Graßhoff, Henrik
name: Adamsky, Florian
name: Schiffner, Stefan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Contact Tracing Apps (CTAs) have been developed to contain the coronavirus disease 19 (COVID-19) spread. By design, such apps invade their users' privacy by recording data about their health, contacts, and partially location. Many CTAs frequently broadcast pseudorandom numbers via Bluetooth to detect encounters. These numbers are changed regularly to prevent individual smartphones from being trivially trackable. However, the effectiveness of this procedure has been little studied. We measured real smartphones and observed that the German Corona-Warn-App (CWA) exhibits a device-specific latency between two subsequent broadcasts. These timing differences provide a potential attack vector for fingerprinting smartphones by passively recording Bluetooth messages. This could conceivably lead to the tracking of users' trajectories and, ultimately, the re-identification of users.
description: accepted for publication at TRUSTBUS
An examination of the use of alternative dispute resolution techniques to resolve commercial disputes
Creators: name: Fulton, Maxwell J.
Publisher: name: Monash University
Year: 2022

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 References field.
LavAtmos: An open source chemical equilibrium vaporisation code for lava worlds
Creators: name: Van Buchem, Christiaan P. A.
name: Miguel, Yamila
name: Zilinskas, Mantas
name: van Westrenen, Wim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: To date, over 500 short-period rocky planets with equilibrium temperatures above 1500 K have been discovered. Such planets are expected to support magma oceans, providing a direct interface between the interior and the atmosphere. This provides a unique opportunity to gain insight into their interior compositions through atmospheric observations. A key process in doing such work is the vapor outgassing from the lava surface. LavAtmos is an open-source code that calculates the equilibrium chemical composition of vapor above a dry melt for a given composition and temperature. Results show that the produced output is in good agreement with the partial pressures obtained from experimental laboratory data as well as with other similar codes from literature. LavAtmos allows for the modeling of vaporization of a wide range of different mantle compositions of hot rocky exoplanets. In combination with atmospheric chemistry codes, this enables the characterization of interior compositions through atmospheric signatures.
description: 13 pages, 6 figures, published in Meteoritics & Planetary Science
Fundamental groups of $F$-regular singularities via $F$-signature
Creators: name: Carvajal-Rojas, Javier
name: Schwede, Karl
name: Tucker, Kevin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 14F35, 14F18, 13A35, 14B05

description: We prove that the local etale fundamental group of a strongly $F$-regular singularity is finite (and likewise for the étale fundamental group of the complement of a codimension $\geq 2$ set), analogous to results of Xu and Greb-Kebekus-Peternell for KLT singularities in characteristic zero. In fact our result is effective, we show that the reciprocal of the $F$-signature of the singularity gives a bound on the size of this fundamental group. To prove these results and their corollaries, we develop new transformation rules for the $F$-signature under finite etale-in-codimension-one extensions. As another consequence of these transformation rules, we also obtain purity of the branch locus over rings with mild singularities (particularly if the $F$-signature is $> 1/2$). Finally, we generalize our $F$-signature transformation rules to the context of pairs and not-necessarily etale-in-codimension-one extensions, obtaining an analog of another result of Xu.
description: 22 pages, comments welcome
Letter from Eric Gill to Henderson, June 22, 1935
Creators: name: Gill, Eric, 1882-1940
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Engravers
valueUri: http://id.worldcat.org/fast/912438
subject: Drawings
valueUri: http://id.worldcat.org/fast/1423718
subject: Engraving
valueUri: http://id.worldcat.org/fast/912443
subject: Printmakers
valueUri: http://id.worldcat.org/fast/1076809
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Wood-engraving
valueUri: http://id.worldcat.org/fast/1179542
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Gill, Eric, 1882-1940
valueUri: http://id.worldcat.org/fast/9187
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Sculptors
valueUri: http://id.worldcat.org/fast/1109473
subject: Drawing
valueUri: http://id.worldcat.org/fast/897725
subject: Artists
valueUri: http://id.worldcat.org/fast/817559

description: Part of a collection of correspondence and art by Eric Gill. Gill was a renowned early 20th century English printmaker, typeface designer, and sculptor who also wrote extensively on social and religious topics. In this letter, Gill addresses statements made by Henderson (first name unknown) regarding the Catholic Church and the Trade Union Movement\. Pencil draft on verso.
Constrained large solutions to Leray's problem in a distorted strip with the Navier-slip boundary condition
Creators: name: Li, Zijin
name: Pan, Xinghong
name: Yang, Jiaqi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q35, 76D05

description: In this paper, we will solve the Leray's problem for the stationary Navier-Stokes system in a 2D infinite distorted strip with the Navier-slip boundary condition. The existence, uniqueness, regularity and asymptotic behavior of the solution will be investigated. Moreover, we discuss how the friction coefficient affects the well-posedness of the solution. Due to the validity of the Korn's inequality, all constants in each a priori estimate are independent of the friction coefficient. The main novelty is the total flux of the velocity can be relatively large (proportional to the {\it slip length}) when the friction coefficient of the Navier-slip boundary condition is small, which is essentially different from the 3D case.
description: 45 pages. arXiv admin note: text overlap with arXiv:2204.10578. A remark is added to state the independent accomplishment of solving the 2D Leray's problem with the Navier-slip boundary condition by our group and Professor Chunjing Xie's group
Improving the precision of multiparameter estimation in the teleportation of qutrit under amplitude damping noise
Creators: name: Li, Yan-Ling
name: Zeng, Yi-Bo
name: Yao, Lin
name: Xiao, Xing
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Since the initial discovery of quantum teleportation, it is devoted to transferring unknown quantum states from one party to another distant partner. However, in the scenarios of remote sensing, what people truly care about is the information carried by certain parameters. The problem of multiparameter estimation in the framework of qutrit teleportation under amplitude damping (AD) noise is studied. Particularly, two schemes are proposed to battle against AD noise and enhance the precision of multiparameter estimation by utilizing weak measurement (WM) and environment-assisted measurement (EAM). For two-phase parameters encoded in a qutrit state, the analytical formulas of the quantum Fisher information matrix (QFIM) can be obtained. The results prove that the scheme of EAM outperforms the WM one in the improvements of both independent and simultaneous estimation precision. Remarkably, the EAM scheme can completely ensure the estimation precision against the contamination by AD noise. The reason should be attributed to the fact that EAM is carried out after the AD noise. Thus, it extracts information from both the system and the environment. The findings show that the techniques of WM and EAM are helpful for remote quantum sensing and can be generalized to other qutrit-based quantum information tasks under AD decoherence.
description: 9 pages, 5 figures, accepted by Annalen der Physik
Finite Size Scaling of Topological Entanglement Entropy
Creators: name: Wang, Yuting
name: Gulden, Tobias
name: Kamenev, Alex
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider scaling of the entanglement entropy across a topological quantum phase transition in one dimension. The change of the topology manifests itself in a sub-leading term, which scales as $L^{-1/α}$ with the size of the subsystem $L$, here $α$ is the Rényi index. This term reveals the universal scaling function $h_α(L/ξ)$, where $ξ$ is the correlation length, which is sensitive to the topological index.
Collective Action in Decentralized Autonomous Organizations (DAOs): Free Riding and Algorithmic Design
Creators: name: Podiotis, Panagiotis
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: polycentricity
subject: decentralization
subject: daos
subject: blockchain
subject: internet sociology
subject: collectivization

description: In this paper I employ a mixed methods approach in an effort to study a novel family of case studies in human collectivization - DAOs (Decentralized Autonomous Organizations). Born out of the blockchain ecosystem and the sociology of the internet, these organizations greatly overlap with common pool resource systems and common goods systems studied in traditional literature. Under this lens, DAOs are found to overcome problems of cooperation by utilizing algorithmic governance. Six case studies are discussed, and specific designs are examined with regards to the tendency of the members to free ride. Ultimately, DAOs are found to be an immature - yet promising, blueprint for the future of human cooperation, fully compatible and relevant to the work of Samuel Olson and Elinor Ostrom.
Factors influencing householder's choice of payment instruments in the Perth metropolitan area
Creators: name: Oborn, Michael J.
Publisher: name: Monash University
Year: 2022

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 References field.
Observation of Spatial Charge and Spin Correlations in the 2D Fermi-Hubbard Model
Creators: name: Cheuk, Lawrence W.
name: Nichols, Matthew A.
name: Lawrence, Katherine R.
name: Okan, Melih
name: Zhang, Hao
name: Khatami, Ehsan
name: Trivedi, Nandini
name: Paiva, Thereza
name: Rigol, Marcos
name: Zwierlein, Martin W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Strong electron correlations lie at the origin of transformative phenomena such as colossal magneto-resistance and high-temperature superconductivity. Already near room temperature, doped copper oxide materials display remarkable features such as a pseudo-gap and a "strange metal" phase with unusual transport properties. The essence of this physics is believed to be captured by the Fermi-Hubbard model of repulsively interacting, itinerant fermions on a lattice. Here we report on the site-resolved observation of charge and spin correlations in the two-dimensional (2D) Fermi-Hubbard model realized with ultracold atoms. Antiferromagnetic spin correlations are maximal at half-filling and weaken monotonically upon doping. Correlations between singly charged sites are negative at large doping, revealing the Pauli and correlation hole\textemdash a suppressed probability of finding two fermions near each other. However, as the doping is reduced below a critical value, correlations between such local magnetic moments become positive, signaling strong bunching of doublons and holes. Excellent agreement with numerical linked-cluster expansion (NLCE) and determinantal quantum Monte Carlo (DQMC) calculations is found. Positive non-local moment correlations directly imply potential energy fluctuations due to doublon-hole pairs, which should play an important role for transport in the Fermi-Hubbard model.
Interaction between the turbulent solar wind and a planetary magnetosphere: a 2D comet example
Creators: name: Etienne, Behar
name: Pierre, Henri
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Using the newly developed code \emph{Menura}, we present the first global picture of the interaction between a turbulent solar wind and a planetary obstacle in our solar system, namely a comet. This first publication aims at shedding lights on the macroscopic effect of the upstream solar wind turbulence on the induced magnetosphere of a comet. Using a hybrid Particle In Cell simulation code, we model a medium activity comet, using both a turbulent and a laminar solar wind input, for a direct comparison between the two regimes. We show how the turbulent characteristics of the solar wind lead to a smaller obstacle size. We then present how the upstream turbulent structures, traced by the perpendicular magnetic field fluctuations absent in the laminar case, self-consistently drape and pile-up around the denser inner coma, forming intense plasmoids downstream of the nucleus, pulling away dense cometary ion bubbles. This pseudo-periodic erosion phenomenon re-channels the global cometary ion escape and as a result, the innermost coma is found to be on average 45\% less dense in the turbulent case than predicted by simulating a laminar upstream flow.
Lot sizing for integrated MRP/JIT environments
Creators: name: Sengsouvanh, Boonmy.
Publisher: name: Monash University
Year: 2022

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 References field.
Transfer Learning for the Efficient Detection of COVID-19 from Smartphone Audio Data
Creators: name: Campana, Mattia Giovanni
name: Delmastro, Franca
name: Pagani, Elena
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Disease detection from smartphone data represents an open research challenge in mobile health (m-health) systems. COVID-19 and its respiratory symptoms are an important case study in this area and their early detection is a potential real instrument to counteract the pandemic situation. The efficacy of this solution mainly depends on the performances of AI algorithms applied to the collected data and their possible implementation directly on the users' mobile devices. Considering these issues, and the limited amount of available data, in this paper we present the experimental evaluation of 3 different deep learning models, compared also with hand-crafted features, and of two main approaches of transfer learning in the considered scenario: both feature extraction and fine-tuning. Specifically, we considered VGGish, YAMNET, and L\textsuperscript{3}-Net (including 12 different configurations) evaluated through user-independent experiments on 4 different datasets (13,447 samples in total). Results clearly show the advantages of L\textsuperscript{3}-Net in all the experimental settings as it overcomes the other solutions by 12.3\% in terms of Precision-Recall AUC as features extractor, and by 10\% when the model is fine-tuned. Moreover, we note that to fine-tune only the fully-connected layers of the pre-trained models generally leads to worse performances, with an average drop of 6.6\% with respect to feature extraction. %highlighting the need for further investigations. Finally, we evaluate the memory footprints of the different models for their possible applications on commercial mobile devices.
The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. X. The radial distribution of stellar populations in NGC 2808
Creators: name: Simioni, Matteo
name: Milone, Antonino P.
name: Bedin, Luigi R.
name: Aparicio, Antonio
name: Piotto, Giampaolo
name: Vesperini, Enrico
name: Hong, Jongsuk
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Due to their extreme helium abundance, the multiple stellar populations of the globular cluster NGC 2808 have been widely investigated from a photometric, spectroscopic, and kinematic perspective. The most striking feature of the color-magnitude diagram of NGC 2808 is the triple main sequence (MS), with the red MS corresponding to a stellar population with primordial helium, and the middle and the blue MS being enhanced in helium up to Y$\sim$0.32 and $\sim$0.38, respectively. A recent study has revealed that this massive cluster hosts at least five distinct stellar populations (A, B, C, D, and E). Among them populations A, B, and C correspond to the red MS, while populations C and D are connected to the middle and the blue MS. In this paper we exploit Hubble-Space-Telescope photometry to investigate the radial distribution of the red, the middle and the blue MS from the cluster center out to about 8.5 arcmin. Our analysis shows that the radial distribution of each of the three MSs is different. In particular, as predicted from multiple-population formation models, both the blue MS and the middle MS appears to be more concentrated than the red MS with a significance level for this result wich is above 3σ.
description: Accepted for publication in MNRAS
From the EFT of Spinning Gravitating Objects to Poincaré and Gauge Invariance at the 4.5PN Precision Frontier
Creators: name: Levi, Michèle
name: Morales, Roger
name: Yin, Zhewei
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We confirm the generalized actions of the complete NLO cubic-in-spin interactions for generic compact binaries which were first tackled via an extension of the EFT of spinning gravitating objects. We first reduce these generalized actions to standard actions with spins, where the interaction potentials are found to consist of $6$ independent sectors, including a new unique sector that is proportional to the square of the quadrupolar deformation parameter, $C_{\text{ES}^2}$. We derive the general Hamiltonians in an arbitrary reference frame, and for generic kinematic configurations. With these most general Hamiltonians we construct the full Poincaré algebra of all the sectors at the fourth and a half post-Newtonian (4.5PN) order, including the third subleading spin-orbit sector, recently accomplished uniquely via our framework, thus proving the Poincaré invariance of all relevant sectors. We then derive the binding energies with gauge-invariant relations useful for gravitational-wave applications. Finally, we also derive the extrapolated scattering angles in the aligned-spins configuration for the scattering problem. Yet, as made clear already as of quadratic-in-spin sectors, the aligned-spins simplification inherent to the scattering-angle observable, entails a great loss of physical information, that is only growing with higher-spin sectors. Our completion of the full Poincaré algebra at the present $4.5$PN order provides strong confidence that this new precision frontier in PN theory has now been established.
description: 46 pp; as per reviewer's comments -- added on discrepancies in subsequent works at both the N3LO spin-orbit sector, and the NLO cubic-in-spin sectors
Future developments in ground-based gamma-ray astronomy
Creators: name: de Almeida, Ulisses Barres
name: Tluczykont, Martin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Ground-based gamma-ray astronomy is a powerful tool to study cosmic-ray physics, providing a diagnostic of the high-energy processes at work in the most extreme astrophysical accelerators of the universe. Ground-based gamma-ray detectors apply a number of experimental techniques to measure the products of air showers induced by the primary gamma-rays over a wide energy range, from about 30 GeV to few PeV. These are based either on the measurement of the atmospheric Cherenkov light induced by the air showers, or the direct detection of the shower's secondary particles at ground level. Thanks to the recent development of new and highly sensitive ground-based gamma-ray detectors, important scientific results are emerging which motivate new experimental proposals, at various stages of implementation. In this chapter we will present the current expectations for future experiments in the field.
description: To appear in "Handbook of X-ray and Gamma-ray Astrophysics" by Springer (Eds. C. Bambi and A. Santangelo) - 59 pp
Signed pencil sketch by Eric Gill, October 17, 1938
Creators: name: Gill, Eric, 1882-1940
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Drawings
valueUri: http://id.worldcat.org/fast/1423718
subject: Artists
valueUri: http://id.worldcat.org/fast/817559
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Wood-engraving
valueUri: http://id.worldcat.org/fast/1179542
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Printmakers
valueUri: http://id.worldcat.org/fast/1076809
subject: Engravers
valueUri: http://id.worldcat.org/fast/912438
subject: Sculptors
valueUri: http://id.worldcat.org/fast/1109473
subject: Drawing
valueUri: http://id.worldcat.org/fast/897725
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Engraving
valueUri: http://id.worldcat.org/fast/912443
subject: Gill, Eric, 1882-1940
valueUri: http://id.worldcat.org/fast/9187

description: Part of a collection of correspondence and art by Eric Gill. Gill was a renowned early 20th century English printmaker, typeface designer, and sculptor who also wrote extensively on social and religious topics. This signed pencil sketch depicts a mother and child framed by Latin script. Signed pencil drawing of a "Mother and Child" (used as a Christmas card for the Peace Pledge Union).
Integrability treatment of AdS/CFT orbifolds
Creators: name: Skrzypek, Torben
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We elaborate on the treatment of orbifolds of type IIB string theory on $AdS_5\times S^5$ and their dual gauge theories with integrability techniques. The implementation of orbifolds via twisted spin-chains, thermodynamic Bethe Ansatz equations with chemical potentials and $Y$- and $T$-systems with modified asymptotics is confronted with twisted boundary conditions of the string sigma-model. This allows us to consistently twist the quantum spectral curve, which is believed to bridge the two sides of the AdS/CFT duality. We discuss Abelian orbifolds of $PSU(2,2|4)$ and treat the special cases of $\mathcal{N}=2$ supersymmetric $\mathbb{Z}_2$-orbifolds and type 0B string theory on $AdS_5\times S^5$ as primary examples. This opens a pathway to probe the validity of the duality and to study the long-standing question of tachyon stabilisation in non-supersymmetric AdS/CFT. We comment on the current understanding of this issue and point out the next steps in this challenge.
description: 54 pages, 6 figures; v4: further calculations added, published version v3: comments and references added, some reformulations for clarity, v2: minor comment and references added
A light induced metastable magnetic texture uncovered by in-situ Lorentz microscopy
Creators: name: Eggebrecht, Tim
name: Möller, Marcel
name: Gatzmann, J. Gregor
name: da Silva, Nara Rubiano
name: Feist, Armin
name: Martens, Ulrike
name: Ulrichs, Henning
name: Münzenberg, Markus
name: Ropers, Claus
name: Schäfer, Sascha
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetic topological defects, including vortices and Skyrmions, can be stabilized as equilibrium structures by tuning intrinsic magnetic interactions and stray field geometries. Here, employing rapid quench conditions, we report the observation of a light-induced metastable magnetic texture, which consists of a dense nanoscale network of vortices and antivortices and exhibits glass-like properties. Our results highlight the emergence of complex ordering regimes in optically driven magnetic systems, opening up new pathways to harness ultrafast far-from-equilibrium relaxation processes.
Organisational disaster recovery planning : an examination of Australian banks
Creators: name: Viney, Christopher.
Publisher: name: Monash University
Year: 2022

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 References field.
The origin of type-I profiles in cluster lenticulars: An interplay between ram pressure stripping and tidally-induced spiral migration
Creators: name: Clarke, Adam J.
name: Debattista, Victor P.
name: Roškar, Rok
name: Quinn, Tom
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using $N$-body+SPH simulations of galaxies falling into a cluster, we study the evolution of their radial density profiles. When evolved in isolation, galaxies develop a type~II (down-bending) profile. In the cluster, the evolution of the profile depends on the minimum cluster-centric radius the galaxy reaches, which controls the degree of ram pressure stripping. If the galaxy falls to $\sim 50\%$ of the virial radius, then the profile remains type~II, but if the galaxy reaches down to $\sim 20\%$ of the virial radius the break weakens and the profile becomes more type~I like. The velocity dispersions are only slightly increased in the cluster simulations compared with the isolated galaxy; random motion therefore cannot be responsible for redistributing material sufficiently to cause the change in the profile type. Instead we find that the joint action of radial migration driven by tidally-induced spirals and the outside-in quenching of star formation due to ram pressure stripping alters the density profile. As a result, this model predicts a flattening of the age profiles amongst cluster lenticulars with type~I profiles, which can be observationally tested. %
description: Accepted for publication in MNRAS
Coordination and thermodynamic properties of aqueous protactinium(V) by first-principle calculations
Creators: name: Oher, Hanna
name: Delafoulhouze, Jeremy
name: Renault, Eric
name: Vallet, Valérie
name: Maurice, Rémi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Protactinium ($Z$ = 91) is a very rare actinide with peculiar physico-chemical properties. Indeed, although one may naively think that it behaves similarly to either thorium or uranium by its position in the periodic table, it may in fact follow its own rules. Because of the quite small energy gap between its valence shells (in particular the 5$f$ and 6$d$ ones) and also the strong influence of relativistic effects on its properties, it is actually a challenging element for theoretical chemists. In this article, we combine experimental information, chemical arguments and standard first-principle calculations, complemented by implicit and explicit solvation, to revisit the stepwise complexation of aqueous protactinium(V) with sulfate and oxalate dianionic ligands (SO$_4$$^{2-}$ and C$_2$O$_4$$^{2-}$, respectively). From a methodological viewpoint, we notably conclude that it is necessary to at least saturate the coordination sphere of protactinium(V) to reach converged equilibrium constant values. Furthermore, in the case of single complexations (i.e. with one sulfate or oxalate ligand bound in the bidentate fashion), we show that it is necessary to maintain the coordination of one hydroxyl group, present in the supposed [PaO(OH)]$^{2+}$ precursor, to obtain coherent complexation constants. Therefore, we predict that this hydroxyl group is maintained in the formation of 1:1 complexes while we confirm that it is withdrawn when coordinating three sulfate or oxalate ligands. Finally, we stress that this work is a first step toward the future use of theoretical predictions to elucidate the enigmatic chemistry of protactinium in solution.
Poisson cohomology of 3D Lie algebras
Creators: name: Hoekstra, Douwe
name: Zeiser, Florian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D17

description: We compute the Poisson cohomology associated with several three dimensional Lie algebras. Together with existing results and the classification of three dimensional Lie algebras, this provides the Poisson cohomology of all linear Poisson structures in dimension 3.
description: 37 pages, 8 figures
Proceedings 3rd Workshop on Horn Clauses for Verification and Synthesis
Creators: name: Gallagher, John P.
name: Rümmer, Philipp
Publisher: name: arXiv
Year: 2016
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: This volume contains the proceedings of HCVS 2016, the Third Workshop on Horn Clauses for Verification and Synthesis which was held on April 3, 2016 in Eindhoven, The Netherlands as a satellite event of the European Joint Conferences on Theory and Practice of Software (ETAPS 2016). Many program verification and synthesis problems of interest can be modeled directly using Horn clauses and many recent advances in the CLP and CAV communities have centered around efficiently solving problems presented as Horn clauses. The Third Workshop on Horn Clauses for Verification and Synthesis was organised with the aim to bring together researchers working in the two communities of Constraint/Logic Programming and Program Verification on the topic of Horn clause based analysis, verification and synthesis. Horn clauses for verification and synthesis have been advocated by these two communities in different times and from different perspectives, and this workshop is organized to stimulate interaction and a fruitful exchange and integration of experiences.
7.1 keV sterile neutrino constraints from X-ray observations of 33 clusters of galaxies with Chandra ACIS
Creators: name: Hofmann, F.
name: Sanders, J. S.
name: Nandra, K.
name: Clerc, N.
name: Gaspari, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recently an unidentified emission line at 3.55 keV has been detected in X-ray spectra of clusters of galaxies. The line has been discussed as a possible decay signature of 7.1 keV sterile neutrinos, which have been proposed as a dark matter candidate. We aim at putting constraints on the proposed line emission in a large sample of Chandra-observed clusters and obtain limits on the mixing-angle in a 7.1 keV sterile neutrino dark matter scenario. For a sample of 33 high-mass clusters of galaxies we merge all observations from the Chandra data archive. Each cluster has more than 100 ks of combined exposure. The resulting high signal-to-noise spectra are used to constrain the flux of an unidentified line emission at 3.55 keV in the individual spectra and a merged spectrum of all clusters. We obtained very detailed spectra around the 3.55 keV range and limits on an unidentified emission line. Assuming all dark matter were made of 7.1 keV sterile neutrinos the upper limits on the mixing angle are $\rm{sin^2(2Θ)}$ $\rm{<10.1\times10^{-11}}$ from ACIS-I, and $\rm{<40.3\times10^{-11}}$ from ACIS-S data at 99.7 per cent confidence level. We do not find evidence for an unidentified emission line at 3.55 keV. The sample extends the list of objects searched for an emission line at 3.55 keV and will help to identify the best targets for future studies of the potential dark matter decay line with upcoming X-ray observatories like Hitomi (Astro-H), eROSITA, and Athena.
description: 20 pages, 6 figures, accepted for publication in A&A
Emerging market opportunities for Australian wool in eastern Europe
Creators: name: Brock, Diana.
Publisher: name: Monash University
Year: 2022

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 References field.
Interlayer electronic transport in CaMnBi$_{2}$ antiferromagnet
Creators: name: Wang, Aifeng
name: Graf, D.
name: Wu, Lijun
name: Wang, Kefeng
name: Bozin, E.
name: Zhu, Yimei
name: Petrovic, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report interlayer electronic transport in CaMnBi$_{2}$ single crystals. Quantum oscillations and angular magnetoresistance suggest coherent electronic conduction and valley polarized conduction of Dirac states. Small cyclotron mass, large mobility of carriers and nontrivial Berry's phase are consistent with the presence of Dirac fermions on the side wall of the warped cylindrical Fermi surface. Similar to SrMnBi$_{2}$ that features an anisotropic Dirac cone, our results suggest that magnetic field-induced changes in the interlayer conduction are also present in layered bismuth-based materials with zero-energy line in momentum space created by the staggered alkaline earth atoms.
description: 6 pages, 5 figures
A Note on the Expressiveness of BIP
Creators: name: Baranov, Eduard
name: Bliudze, Simon
Publisher: name: arXiv
Year: 2016
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Logic in Computer Science (cs.LO)
subject: Programming Languages (cs.PL)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: We extend our previous algebraic formalisation of the notion of component-based framework in order to formally define two forms, strong and weak, of the notion of full expressiveness. Our earlier result shows that the BIP (Behaviour-Interaction-Priority) framework does not possess the strong full expressiveness. In this paper, we show that BIP has the weak form of this notion and provide results detailing weak and strong full expressiveness for classical BIP and several modifications, obtained by relaxing the constraints imposed on priority models.
description: In Proceedings EXPRESS/SOS 2016, arXiv:1608.02692
Theoretical study of the I$^{+}$ + I$^{-}$ mutual neutralization reaction
Creators: name: Badin, Sylvain
name: Yuan, Xiang
name: Bourgeois, Pierre-Louis
name: Gomes, Andre Severo Pereira
name: Sisourat, Nicolas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We have computed the cross sections of the mutual neutralization reaction between I$^{+}$ and I$^{-}$ for a collision energy varying from 0.001 eV to 50 eV. These cross sections were obtained using the adiabatic potential energy curves of the I$_{2}$ system computed with a direct relativistic Multi-Reference Configuration Interaction method and a semi-classical approach (i.e. Landau Zener Surface Hopping). We report the cross sections towards the following neutral states: $\text{I}(^{2}P_{3/2})+\text{I}(^{2}P_{3/2})$, $\text{I}(^{2}P_{3/2})+\text{I}(^{2}P_{1/2})$, $\text{I}(^{2}P_{1/2})+\text{I}(^{2}P_{1/2})$ and $\text{I}(5p^{4}6s)+\text{I}(^{2}P_{3/2})$. We also discuss the cross sections towards the two following excited ionic states : $\text{I}^{-}(^{1}S_{0})+\text{I}^{+}(^{3}P_{0})$ and $\text{I}^{-}(^{1}S_{0})+\text{I}^{+}(^{3}D_{2})$. The results of these calculations are in accordance with recent experimental measurements conducted in the double ion ring DESIREE in Stockholm. These results can be used to model iodine plasma kinetics and thus to improve our understanding of the latter.