cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Density of states and dynamical crossover in a dense fluid revealed by exponential mode analysis of the velocity autocorrelation function
Creators: name: Bellissima, S.
name: Neumann, M.
name: Guarini, E.
name: Bafile, U.
name: Barocchi, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Extending a previous study of the velocity autocorrelation function (VAF) in a simulated Lennard-Jones fluid to cover higher-density and lower-temperature states, we show that the recently demonstrated multiexponential expansion allows for a full account and understanding of the dynamical processes encompassed by a fundamental quantity as the VAF. In particular, besides obtaining evidence of a persisting long-time tail, we assign specific and unambiguous physical meanings to groups of exponential modes related to the longitudinal and transverse collective dynamics, respectively. We have made this possible by consistently introducing the interpretation of the VAF frequency spectrum as a global density of states in fluids, generalizing a solid-state concept, and by giving to specific spectral components, obtained via the VAF exponential expansion, the corresponding meaning of partial densities of states relative to specific dynamical processes. The clear identification of a high-frequency oscillation of the VAF with the near-top excitation frequency in the dispersion curve of acoustic waves is a neat example of the power of the method. As for the transverse mode contribution, its analysis turns out to be particularly important, because the multiexponential expansion reveals a transition marking the onset of propagating excitations when the density is increased above a threshold value. While this finding agrees with recent literature debating the issue of dynamical crossover boundaries, such as the one identified with the Frenkel line, we can add detailed information on the modes involved in this specific process in the domains of both time and frequency. This will help obtain a still missing full account of transverse dynamics, in its nonpropagating and propagating aspects which are linked by dynamical transitions depending on both the thermodynamic states and the excitation wavevectors.
Coherent State Transforms and the Weyl Equation in Clifford Analysis
Creators: name: Mourão, José
name: Nunes, João P.
name: Qian, Tao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study a transform, inspired by coherent state transforms, from the Hilbert space of Clifford algebra valued square integrable functions $L^2({\mathbb R}^m,dx)\otimes {\mathbb C}_{m}$ to a Hilbert space of solutions of the Weyl equation on ${\mathbb R}^{m+1}= {\mathbb R} \times {\mathbb R}^m$, namely to the Hilbert space ${\mathcal M}L^2({\mathbb R}^{m+1},dμ)$ of ${\mathbb C}_m$-valued monogenic functions on ${\mathbb R}^{m+1}$ which are $L^2$ with respect to an appropriate measure $dμ$. We prove that this transform is a unitary isomorphism of Hilbert spaces and that it is therefore an analog of the Segal-Bargmann transform for Clifford analysis. As a corollary we obtain an orthonormal basis of monogenic functions on ${\mathbb R}^{m+1}$. We also study the case when ${\mathbb R}^m$ is replaced by the $m$-torus ${\mathbb T}^m.$ Quantum mechanically, this extension establishes the unitary equivalence of the Schrödinger representation on $M$, for $M={\mathbb R}^m$ and $M={\mathbb T}^m$, with a representation on the Hilbert space ${\mathcal M}L^2({\mathbb R} \times M,dμ)$ of solutions of the Weyl equation on the space-time ${\mathbb R}\times M$.
Modelling Stock-market Investors as Reinforcement Learning Agents [Correction]
Creators: name: Pastore, Alvin
name: Esposito, Umberto
name: Vasilaki, Eleni
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Decision making in uncertain and risky environments is a prominent area of research. Standard economic theories fail to fully explain human behaviour, while a potentially promising alternative may lie in the direction of Reinforcement Learning (RL) theory. We analyse data for 46 players extracted from a financial market online game and test whether Reinforcement Learning (Q-Learning) could capture these players behaviour using a risk measure based on financial modeling. Moreover we test an earlier hypothesis that players are "naïve" (short-sighted). Our results indicate that a simple Reinforcement Learning model which considers only the selling component of the task captures the decision-making process for a subset of players but this is not sufficient to draw any conclusion on the population. We also find that there is not a significant improvement of fitting of the players when using a full RL model against a myopic version, where only immediate reward is valued by the players. This indicates that players, if using a Reinforcement Learning approach, do so naïvely
description: 8 pages (including bibliography and appendix), 5 figures (2 in main body, 3 in appendix). IEEE EAIS 2015 Conference paper erratum
Meanings, identities and ideologies in organised children's sport : Little Aths as a case study
Creators: name: Sands., Rob
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 References field.
Approximate light cone effects in a non-relativistic quantum field theory after a local quench
Creators: name: Bertini, Bruno
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the spreading of correlations after a local quench in a non-relativistic quantum field theory. We focus on noninteracting non-relativistic fermions and study the time evolution after two identical systems in their ground states are suddenly joined together with a localized impurity at the junction. We find that, even if the quasi-particles of the system have unbounded dispersion, the correlations show light cone effects. We carry out a detailed study of these effects by developing an accurate asymptotic expansion of the two-point function and determining exactly the density of particles at any time after the quench. In particular, we find that the width of the light cone region is $\propto t^{1/2}$. The structure of correlations, however, does not show a pure light cone form - "superluminal corrections" are much larger than in the bounded-dispersion case. These findings can be explained by inspecting the structure of excitations generated by the initial state. We show that a similar picture also emerges in the presence of a harmonic trapping potential and when more than two systems are suddenly joined at a single point.
description: 28 pages, 11 figures
Inferring the Coronal Density Irregularity from EUV Spectra
Creators: name: Hahn, Michael
name: Savin, Daniel Wolf
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Understanding the density structure of the solar corona is important for modeling both coronal heating and the solar wind. Direct measurements are difficult because of line-of-sight integration and possible unresolved structures. We present a new method for quantifying such structure using density-sensitive EUV line intensities to derive a density irregularity parameter, a relative measure of the amount of structure along the line of sight. We also present a simple model to relate the inferred irregularities to physical quantities, such as the filling factor and density contrast. For quiet Sun regions and interplume regions of coronal holes, we find a density contrast of at least a factor of three to ten and corresponding filling factors of about 10-20%. Our results are in rough agreement with other estimates of the density structures in these regions. The irregularity diagnostic provides a useful relative measure of unresolved structure in various regions of the corona.
description: Submitted to the Astrophysical Journal
Reflective anisotropic hyperbolic lattices of rank $4$
Creators: name: Bogachev, Nikolay V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: A hyperbolic lattice is called \textit{$1.2$-reflective} if the subgroup of its automorphism group generated by all $1$- and $2$-reflections is of finite index. The main result of this article is a complete classification of $1.2$-reflective maximal anisotropic lattices of rank $4$.
description: 22 pages, 2 figures
Predicting depression history from a short reward/aversion task with behavioral economic features
Creators: name: Stefanopoulos, Leandros
name: Lavlani, Shamal
name: W. Kim, Byoung
name: Vike, Nicole L
name: Bari, Sumra
name: Emanuel, Azcona
name: Woodward, Sean
name: Block, Martin
name: Maglaveras, Nikos
name: Katsaggelos, Aggelos
name: Breiter, Hans
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 461199
subject: Machine learning not elsewhere classified

description: This paper presents a novel example of depression prediction, merging cognitive science with data-driven machine learning. Behavioral economic features were engineered from a short picture rating task. Relative Preference Theory was ap-plied to rating data for quantifying the degree to which partici-pants liked, disliked, or were neutral to several types of pictures; thus, behavioral economic variables including loss aversion, risk aversion, and 13 others that are amenable to psychological in-terpretation were mined. These variables were features of a lo-gistic regression predictive model that targeted depression in a population-based sample (N=281) with high test accuracy and no overfitting. Per our review of the literature, we cannot iden-tify other papers that explicitly use behavioral economic fea-tures to predict depression with machine learning
Manipulating Gas Micro-Volumes with Submerged Meshes of Controlled Wettability
Creators: name: Bernardini, Jacopo
Publisher: name: University of Illinois at Chicago
Year: 2019
Subjects: Uncategorized

description: In the last century, much attention has been given to the study of surface wettability, and many techniques have been developed to produce superhydrophobic (water-repelling) and superhydrophilic (water-attracting) substrates. On the other hand, much less effort has been put in the analysis of the interaction between a solid surface and an air bubble. Nevertheless, the interaction between a solid substrate and gas bubbles is important when the substrate is submerged in water or any other liquid containing dissolved gas, and it can be relevant in many industrial applications, such as those involving two-phase column reactors. Few studies concerning underwater superhydrophobicity and superaerophobicity have been published in the last two decades, but none of them focus on the interaction between gas bubbles and a submerged permeable substrate, such as a metal mesh. The present work demonstrates the possibility of employing submerged metal meshes with super air-attracting/repelling properties to manipulate micro-volumes of air, in the form of bubbles, rising at terminal velocity. Superaerophobic meshes selectively allow the passage of an air bubble depending on the mesh pore-size and the bubble equivalent diameter. Superaerophilic meshes reduce or amplify the volume of a stream of incoming bubbles covering a wide range of amplification factors. Mainly two cases are considered hereafter: in the first one, uniform superaerophilic or superaerophobic meshes are analyzed; in the second one, a wettability-pattern is imparted on the top and bottom surfaces of the mesh. In the latter case, a relation to predict the volume of a bubble resulting from a given mesh is proposed.
Students' participation in virtual learning environments
Creators: name: Salam., Urai
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 References field.
Cusp-shaped structure of a jet observed by IRIS and SDO
Creators: name: Yuzong, Zhang
name: Jun, Zhang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: On 29 August 2014, the trigger and evolution of a cusp-shaped jet were captured in detail at 1330 Å by the Interface Region Imaging Spectrograph.At first, two neighboring mini-prominences arose in turn from low solar atmosphere and collided with a loop-like system over them. The collisions between the loop-like system and the mini-prominences lead to the blowout and then a cusp-shaped jet formed with a spire and an arch-base. In the spire, many brightening blobs originating from the junction between the spire and the arch-base, moved upward in a rotating manner and then in a straight line in the late phase of the jet. In the arch-base, dark and bright material simultaneously tracked in a fan-like structure and the majority of the material moved along the fan's threads. At the later phase of the jet's evolution, bidirectional flows emptied the arch-base, while down-flows emptied the spire, thus making the jet entirely vanish. The extremely detailed observations in this study shed new light on how magnetic reconnection alters the inner topological structure of a jet, and provide a beneficial complement for understanding current jet models.
description: 5 figures, accepted by ApJ
Index Of Local Sensitivity To Nonignorability For Intensive Longitudinal Data
Creators: name: Chengbo Yuan
Publisher: name: University of Illinois at Chicago
Year: 2019
Subjects: Uncategorized

description: When analyzing intensive longitudinal data, it is often assumed the missingness is ignorable. Since this assumption is unverifiable, it is crucial to perform sensitivity analysis to assess the potential impact of nonignorability. However considering the complex and non-monotone missing patterns and the large volume of data, a sensitivity analysis that directly fits different nonignorable models can be challenging to perform because of the high dimensional integrations in the likelihood functions from the alternative models. Linear index of local sensitivity to nonignorability method has been developed to avoid fitting complicated nonignorable models and simplify the calculation for different data types and statistical models when missingness occurs in outcome only. Also, this method has been extended for cross-sectional data by introducing the nonlinear index to capture the U-shape impact of nonignorability caused by concurrent missingness in outcome and covariates. In this dissertation, we further extend the application of this nonlinear index of local sensitivity to nonignorability (NISNI) method to longitudinal linear mixed effects models. With selection modeling framework and the non-monotone missingness patterns modeled using transitional multinomial models, we develop formulas and closed-form expressions for both linear and nonlinear indexes when outcome missing only, outcome and one covariate missing simultaneously, and outcome and multiple covariates missing simultaneously. We evaluate the performance of this extended method using simulated data and real intensive longitudinal datasets. The results indicate that our method can maintain the computational simplicity and capture the impact of nonignorability accurately under different situations.
Static and Dynamic Magnetic Response of Fragmented Haldane-like Spin Chains in Layered Li3Cu2SbO6
Creators: name: Koo, Changhyun
name: Zvereva, Elena A.
name: Shukaev, Igor L.
name: Richter, Michael
name: Stratan, Mikhail I.
name: Vasiliev, Alexander N.
name: Nalbandyan, Vladimir B.
name: Klingeler, Rüdiger
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The structure and the magnetic properties of layered Li3Cu2SbO6 are investigated by powder X-ray diffraction, static susceptibility, and electron spin resonance studies up to 330 GHz. The XRD data experimentally verify the space group C2/m with halved unit cell volume in contrast to previously reported C2/c. In addition, the data show significant Li/Cu-intersite exchange. Static magnetic susceptibility and ESR measurements show two magnetic contributions, i.e. quasi-free spins at low-temperature and a spin-gapped magnetic subsystem, with about half of the spins being associated to each subsystem. The data suggest ferromagnetic-antiferromagnetic alternating chains with JFM = -285 K and JAFM = 160 K with a significant amount of Li-defects in the chains. The results are discussed in the scenario of fragmented 1D S = 1 AFM chains with a rather high defect concentration of about 17% and associated S = 1/2 edge states of the resulting finite Haldane chains.
Rankin-Selberg L-functions for the Unitary Similitude Group of Order Two
Creators: name: Trifunovski, Darko
Publisher: name: University of Illinois at Chicago
Year: 2019
Subjects: Uncategorized

description: Following work of Jacquet on the general linear group of order two, we construct automorphic L-functions for pairs of representations of the quasi-split unitary similitude group of order two, given by a global zeta integral involving an Eisenstein series.
L'art arabe d'après les monuments du Kaire [Book 01 - Text]
Creators: name: Prisse D'Avennes, 1807-1879
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Islamic architecture
valueUri: http://id.worldcat.org/fast/1730262
subject: Art
valueUri: http://id.worldcat.org/fast/815177
subject: Mosques--Design and construction
valueUri: http://id.worldcat.org/fast/1026763
subject: Decoration and ornament, Architectural
valueUri: http://id.worldcat.org/fast/889225
subject: Monuments
valueUri: http://id.worldcat.org/fast/1025892
subject: Islamic art
valueUri: http://id.worldcat.org/fast/1730275
subject: Art, Egyptian
valueUri: http://id.worldcat.org/fast/816211
subject: Islamic decorative arts
valueUri: http://id.worldcat.org/fast/1730313
subject: Architecture
valueUri: http://id.worldcat.org/fast/813346
subject: FOS: Civil engineering

description: Originally published in parts, 1869-1877. Comprised of this volume of text and an atlas of colour plates. This text discusses the history of Egypt and the city of Cairo with the main focus being on Islamic art and architecture. Includes an analysis of the plates in the accompanying atlas.
"Dancing yet to the dimdims' beat" : dilemmas in postcolonial science curricula : the case of Papua New Guinea
Creators: name: Ryan., Ann Elizabeth
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 References field.
Supplementary Peeking Under the skin: Deciphering enigmas underlying necrotising soft tissue infections
Creators: name: Jahagirdar, Sanjeevan
Publisher: name: Zenodo
Year: 2023

description: This is the supplementary folder for my (Sanjeevan Jahagirdar) PhD thesis titled Peeking under the skin: Deciphering enigmas underlying necrotising soft tissue infections.
Maxi observations of long X-ray bursts
Creators: name: Serino, Motoko
name: Iwakiri, Wataru
name: Tamagawa, Toru
name: Sakamoto, Takanori
name: Nakahira, Satoshi
name: Matsuoka, Masaru
name: Yamaoka, Kazutaka
name: Negoro, Hitoshi
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report nine long X-ray bursts from neutron stars, detected with Monitor of All-sky X-ray Image (MAXI). Some of these bursts lasted for hours, and hence are qualified as superbursts, which are prolonged thermonuclear flashes on neutron stars and are relatively rare events. MAXI observes roughly 85% of the whole sky every 92 minutes in the 2-20 keV energy band, and has detected nine bursts with a long e-folding decay time, ranging from 0.27 to 5.2 hours, since its launch in 2009 August until 2015 August. The majority of the nine events were found to originate from transient X-ray sources. The persistent luminosities of the sources, when these prolonged bursts were observed, were lower than 1% of the Eddington luminosity for five of them and lower than 20% for the rest. This trend is contrastive to the 18 superbursts observed before MAXI, all but two of which originated from bright persistent sources. The distribution of the total emitted energy, i.e., the product of e-folding time and luminosity, of these bursts clusters around $10^{41}$-$10^{42}$ erg, whereas either of the e-folding time and luminosity ranges for an order of magnitude. Among the nine events, two were from 4U 1850-086 during the phases of relatively low persistent-flux, whereas it usually exhibits standard short X-ray bursts during outbursts.
description: 15 pages, 7 figures
Local well-posedness of the EPDiff equation: a survey
Creators: name: Kolev, Boris
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This article is a survey on the local well-posedness problem for the general EPDiff equation. The main contribution concerns recent results on local existence of the geodesics on $\mathrm{Diff}(\mathbb{T}^{d})$ and $\mathrm{Diff}(\mathbb{R}^{d})$ when the inertia operator is a non-local Fourier multiplier.
Hedonic Pricing of Attributes of Nicotine Delivery Systems and the Impact of Bans on Specific Attributes
Creators: name: Nahleen Zahra
Publisher: name: University of Illinois at Chicago
Year: 2019
Subjects: Uncategorized

description: This dissertation uses novel techniques to identify areas of effective vaping and tobacco control policy and evaluates the impact of existing policies on sales using retail scanner data. The first chapter uses a hedonic pricing method to estimate exact dollar values for the economic valuation of flavour and strength levels of electronic (e-) cigarettes. New and casual users who buy disposable and starter kits of rechargeable e-cigarettes value exotic flavours such as fruit, candy or spices the most, paying a price premium for these over tobacco and menthol flavours, with menthol being the least favoured. They also pay a similar premium for low-strength products compared to full-strength. However, more regular users who buy refill cartridges tend to value both exotic and menthol flavours more highly than tobacco, as well as full-strength. In the second chapter, the same methodology is used to estimate dollar values for the valuation of attributes of conventional cigarettes and little cigars. Smokers pay a price premium for menthol flavour in cigarettes and for low-strength options. They pay less for long and for filter-tipped cigarettes, but pay a premium for the option to buy individual packs rather than in bulk. I also find that smokers of little cigars tend to have varying preferences depending on what kind of store they purchase from. While smokers who buy from convenience stores value tobacco flavour and non-filter tips more, those who buy from food, drug and mass stores have the opposite preferences, suggesting a difference in consumer profile in the two store types. The final chapter examines the short- and long-term impacts of two policies that target specific attributes of cigarettes and little cigars. I find that the ban on sales of flavoured cigarettes had the short-term effect of increasing sales of menthol cigarettes, but the effect did not persist over time. The ban on descriptor words on cigarette packaging had the short-term effect of increasing sales of low- and full-strength cigarettes, and dampened sales of both in the long-term, slowing sales of full-strength cigarettes and causing that of low-strength ones to decline over time.
Current-dependent exchange-correlation potential for non-local absorption in quantum hydrodynamic theory
Creators: name: Ciracì, Cristian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The quantum hydrodynamic theory is a promising method for describing microscopic details of macroscopic systems. The hydrodynamic equation can be directly obtained from a single particle Kohn-Sham equation that includes the contribution of an external vector potential. This derivation allows to straightforwardly incorporate in the hydrodynamic equation an exchange-correlation viscoelastic term, so that broadening of collective excitation can be taken into account, as well as a correction to the plasmon dispersion. The result is an accurate self-consistent and computationally efficient hydrodynamic description of the free electron gas. A very accurate agreement with full quantum calculations is shown.
Mutual influence within dyads of counsellor-trainees and coached clients
Creators: name: Ridgway., I.R.
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 References field.
Inference of Heating Properties from "Hot" Non-flaring Plasmas in Active Region Cores. II. Nanoflare Trains
Creators: name: Barnes, W. T.
name: Cargill, P. J.
name: Bradshaw, S. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Despite its prediction over two decades ago, the detection of faint, high-temperature ("hot") emission due to nanoflare heating in non-flaring active region cores has proved challenging. Using an efficient two-fluid hydrodynamic model, this paper investigates the properties of the emission expected from repeating nanoflares (a nanoflare train) of varying frequency as well as the separate heating of electrons and ions. If the emission measure distribution ($\mathrm{EM}(T)$) peaks at $T = T_m$, we find that $\mathrm{EM}(T_m)$ is independent of details of the nanoflare train, and $\mathrm{EM}(T)$ above and below $T_m$ reflects different aspects of the heating. Below $T_m$ the main influence is the relationship of the waiting time between successive nanoflares to the nanoflare energy. Above $T_m$ power-law nanoflare distributions lead to an extensive plasma population not present in a monoenergetic train. Furthermore, in some cases characteristic features are present in $\mathrm{EM}(T)$. Such details may be detectable given adequate spectral resolution and a good knowledge of the relevant atomic physics. In the absence of such resolution we propose some metrics that can be used to infer the presence of "hot" plasma.
description: 15 pages, 11 figures, accepted to ApJ
A trapped atom interferometer with ultracold Sr atoms
Creators: name: Zhang, Xian
name: del Aguila, Ruben Pablo
name: Mazzoni, Tommaso
name: Poli, Nicola
name: Tino, Guglielmo M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report on a trapped atom interferometer based on Bragg diffraction and Bloch oscillations with alkaline-earth-metal atoms. We use a Ramsey-Bordé Bragg interferometer with $^{88}$Sr atoms combined with Bloch oscillations to extend the interferometer time. Thanks to a long coherence time for Bloch oscillations of $^{88}$Sr atoms, we observed interference up to 1 s evolution time in the lattice. A detailed study of decoherence sources during the Bloch phase is also presented. While still limited in sensitivity by lattice lifetime and beam inhomogeneity this result opens the way to high contrast trapped interferometers with extended interrogation time.
description: 9 pages, 8 figures, Accepted for publication in Phys. Rev. A
Companion eccentricity diffusion & multiple populations: the companion accretion model
Creators: name: Winter, Andrew
Publisher: name: Zenodo
Year: 2023
Subjects: globular clusters
multiple populations
binaries
accretion
dynamics
stellar evolution

description: Globular clusters exhibit abundance variations, defining ‘multiple populations’, which have prompted a protracted search for their origin since the 1970s. In this talk, I discuss a novel model to explain these variations, the 'companion accretion model'. An overlooked characterstic of the dynamical perturbation cross-section for binaries in hot stellar clusters is that distant encounters are just as important as close ones. This long-range influence leads to a diffusion of the initial companion eccentricity, and can ultimately result in a merger. These mergers happen regularly in massive globular clusters, and explain some key characteristics of the observed multiple populations, such as their correlation with mass and age. Finally, I highlight key aspects of the model that require further exploration in future works.
Antarctic leader and administrator : the early life of P.G. Law
Creators: name: Ralston., Kathleen
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 References field.
Approximation Techniques for Scaling up Permanental Classification
Creators: name: Abernethy, Jonathon
Publisher: name: University of Illinois at Chicago
Year: 2019
Subjects: Uncategorized

description: The overarching theme of this thesis is reducing the time and space complexities of the permanental approach to multi class classification. Approximate permanental classification can be achieved via a hierarchy of increasingly accurate cyclic approximations to the permanent ratio. The computational complexities of these approximations also increase with the accuracy however, with rate O(N^(#cycles-1)) for training time and O(N^2) for training and prediction memory. In this thesis three approximation techniques are investigated for speeding up the training and prediction times for cyclic approximations up to order four. The methods used are random Fourier features, data binning, and basis function approximation. Basis functions with weights chosen using integrals square error minimization perform best empirically. Finally, a pseudo likelihood is developed and used for variable selection.
Topological Weyl semimetals in the chiral antiferromagnetic materials Mn3Ge and Mn3Sn
Creators: name: Yang, Hao
name: Sun, Yan
name: Zhang, Yang
name: Shi, Wu-Jun
name: Parkin, Stuart S. P.
name: Yan, Binghai
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Recent experiments revealed that Mn3Sn and Mn3Ge exhibit a strong anomalous Hall effect at room temperature, provoking us to explore their electronic structures for topological properties. By ab initio band structure calculations, we have observed the existence of multiple Weyl points in the bulk and corresponding Fermi arcs on the surface, predicting antiferromagnetic Weyl semimetals in Mn3Ge and Mn3Sn. Here the chiral antiferromagnetism in the Kagome-type lattice structure is essential to determine the positions and numbers of Weyl points. Our work further reveals a new guiding principle to search for magnetic Weyl semimetals among materials that exhibit a strong anomalous Hall effect.
description: 5 pages, 2 tables and 4 figures
Interpretative Theory of Hardship, Resilience, and Resistance in Chicago's Little Village Community
Creators: name: Genkova, Ana Gancheva
Publisher: name: University of Illinois at Chicago
Year: 2019
Subjects: Uncategorized

description: The leading framework for understanding Mexican immigrant health has focused on individual-level adaptation to stressful immigration experiences. Issues of race and power have received much less attention. I adopted a critical race theory lens through which to interrogate the relationship between culture, community context, and health in a Mexican immigrant neighborhood. To do so, I interpreted a collection of stories from Chicago’ Little Village neighborhood. These stories were recorded as part of a collaborative, participatory community health assessment. I used constructivist grounded theory as a methodology to examine these archival records. In this study, I present examples of inequities and narratives that jeopardize transformative efforts at the community level. Additionally, I frame resilience not only as adaptation, but also as resistance. My interpretative analyses show how the Little Village community acts as a space of survival and resistance for generations of Mexican immigrants. The neighborhood has a symbolic significance for the plight of Mexicans in segregated Chicago. Leaders and activists from the community described a transformative vision for inter-generational change and collective impact. Immigrant mothers play a particularly important role in carrying out this vision in day-to-day life. Gentrification and lack of resources continuously threaten to disrupt collective power in the community. The theoretical depth of this study complicates ahistorical models of resilience and imply the need for a decolonial lens in conceptualizing community health and wellbeing.
Prediction of Escalation in E-cigarette Use Among Twitter Users
Creators: name: Akshay Uppal
Publisher: name: University of Illinois at Chicago
Year: 2019
Subjects: Uncategorized

description: Electronic cigarettes have witnessed a growing market in the last few years. While they been advertised as a healthier alternative to combustible cigarettes, they can lead to nicotine addiction and weakening of the immune system. The most popular e-cigarette brand in the United States, Juul, was subject to a lot of public scrutiny due to its marketing practices targeted towards adolescents. There is a growing body of research in the usage of tobacco, cannabis, and illicit drugs, with studies suggesting that the usage of one drug leading to an increase in the likelihood of another drug, commonly referred to as a "gateway drug." However, little is known about whether we can predict the escalation from tobacco use to other drugs and whether e-cigarettes are contributing to such escalation. In this work, we collect data from Twitter for users who use Juul hashtags and look for temporal patterns that can predict the escalation from tobacco to cannabis. After filtering out the commercial and promoter users out from the data, we look for changes from first e-cigarette to first cannabis use. We reduce the problem to a supervised classification problem that can detect this escalation. We make predictions for different time intervals using several classifiers which consider lexical features from the tweets, together with user features, such as status count. Our findings have implications for making adequate public policies in the area of health and education.
High-energy gamma-ray observations of the accreting black hole V404 Cygni during its June 2015 outburst
Creators: name: Loh, A.
name: Corbel, S.
name: Dubus, G.
name: Rodriguez, J.
name: Grenier, I.
name: Hovatta, T.
name: Pearson, T.
name: Readhead, A.
name: Fender, R.
name: Mooley, K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on Fermi/Large Area Telescope observations of the accreting black hole low-mass X-ray binary V404 Cygni during its outburst in June-July 2015. Detailed analyses reveal a possible excess of $γ$-ray emission on 26 June 2015, with a very soft spectrum above $100$ MeV, at a position consistent with the direction of V404 Cyg (within the $95\%$ confidence region and a chance probability of $4 \times 10^{-4}$). This emission cannot be associated with any previously-known Fermi source. Its temporal coincidence with the brightest radio and hard X-ray flare in the lightcurve of V404 Cyg, at the end of the main active phase of its outburst, strengthens the association with V404 Cyg. If the $γ$-ray emission is associated with V404 Cyg, the simultaneous detection of $511\,$keV annihilation emission by INTEGRAL requires that the high-energy $γ$ rays originate away from the corona, possibly in a Blandford-Znajek jet. The data give support to models involving a magnetically-arrested disk where a bright $γ$-ray jet can re-form after the occurrence of a major transient ejection seen in the radio.
description: 5 pages, 3 figures, accepted for publication in MNRAS
Neural Networks for Modeling and Control of Particle Accelerators
Creators: name: Edelen, A. L.
name: Biedron, S. G.
name: Chase, B. E.
name: Edstrom, D.
name: Milton, S. V.
name: Stabile, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We describe some of the challenges of particle accelerator control, highlight recent advances in neural network techniques, discuss some promising avenues for incorporating neural networks into particle accelerator control systems, and describe a neural network-based control system that is being developed for resonance control of an RF electron gun at the Fermilab Accelerator Science and Technology (FAST) facility, including initial experimental results from a benchmark controller.
description: 21 pp
Spin flip loss in magnetic confinement of ultracold neutrons for neutron lifetime experiments
Creators: name: Steyerl, A.
name: Leung, K. K. H.
name: Kaufman, C.
name: Müller, G.
name: Malik, S. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We analyze the spin flip loss for ultracold neutrons in magnetic bottles of the type used in experiments aiming at a precise measurement of the neutron lifetime, extending the one-dimensional field model used previously by Steyerl $\textit{et al.}$ [Phys.Rev.C $\mathbf{86}$, 065501 (2012)] to two dimensions for cylindrical multipole fields. We also develop a general analysis applicable to three dimensions. Here we apply it to multipole fields and to the bowl-type field configuration used for the Los Alamos UCN$τ$ experiment. In all cases considered the spin flip loss calculated exceeds the Majorana estimate by many orders of magnitude but can be suppressed sufficiently by applying a holding field of appropriate magnitude to allow high-precision neutron lifetime measurements, provided other possible sources of systematic error are under control.
title: Обеспечение законности в оперативно-розыскной деятельности
Creators: name: Синькевич, Николай
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: Рассматривается проблема укрепления законности в правоохранительной сфере при проведении оперативно-розыскных мероприятий. Исследуются надзорная деятельность органов прокуратуры и ведомственный контроль за оперативными аппаратами правоохранительных органов, уполномоченных осуществлять оперативно-розыскную деятельность. Анализируются причины нарушения законности.
The Organic Matter of Lake Vida, Antarctica: Biogeochemistry of an Icy Planetary World Analog
Creators: name: Luoth Chou
Publisher: name: University of Illinois at Chicago
Year: 2019
Subjects: Uncategorized

description: The biogeochemistry of Lake Vida brine, Antarctica, was investigated by studying the organic matter composition in a cold, isolated, subzero, hypersaline, anoxic, and aphotic brine environment. The brine of Lake Vida, encapsulated within the thick (27+ m) of Lake Vida ice, harbors an exclusively bacterial community that is metabolically active at maintenance level. Lake Vida brine is a unique analog for icy planetary worlds. Studying the organic biosignatures that are produced, processed, and transformed in Lake Vida brine can enhance our understanding of life in subzero habitats and inform our search for extant biosignatures of life on other icy worlds, such as Mars, Europa, or Enceladus. First, I investigated the standing crop of organic biosignatures in Lake Vida brine using environmental metabolomics. Analysis of the dissolved metabolites of Lake Vida brine revealed that legacy paleometabolites from past environmental conditions remained in the brine after millennia of isolation. Second, I characterized novel organic sulfones in a fraction of the dissolved organic matter in Lake Vida brine in order to further understand the ancient and modern processes that dominate the Lake Vida brine environment. Third, I investigated the particulate organic matter of Lake Vida brine using combined lipidomics and targeted metagenomics approaches in order to distinguish modern from ancient metabolites by interrogating the genetic capacity of the modern Lake Vida brine microbial community. Eukaryotic cellular detritus and legacy lipids that were indicative of a different, possibly photosynthetic, community were detected. Results indicate that Lake Vida brine contains abundant legacy organic matter in both the dissolved and particulate fraction. However, metagenomics analysis suggests that some of the lipids observed in the particulate organic matter fraction could potentially be modern. Ultimately, the presence of legacy biosignatures in the Lake Vida brine organic matter suggests that organic biosignatures of previous ecosystems may be preserved in cold, isolated ecosystems for long timescales. The prevalence of legacy in Lake Vida brine is due to the slow-growing, cold-limited lifestyle of the modern microbial assemblage. I posit that the abundance of legacy in other cold-limited, slow-growing ecosystems, on Earth and on other icy worlds, is not likely trivial and may affect the standing crop of the organic biosignatures of an environment at a given time. However, combined with metagenomics analysis, potentially achieved by space-capable sequencing technology, may allow for an integrated investigation of organic biosignatures, providing an avenue for detecting modern biosignatures, and thus, the presence of extant life.
Continuity of reachable sets of restricted affine control systems
Creators: name: Ayala, Victor
name: Da Silva, Adriano
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this paper we give a direct proof that for a restricted affine control system on a connected manilfold M, the associated reachable sets up to time t varies continuously with the Haudorff metric.
The spirituality of the lay Catholic educator in Australian Catholic secondary schools
Creators: name: Prest., John
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 References field.
Clustered-Temporal Bayesian Models for Brain Connectivity in Neuroimaging Data
Creators: name: Nairita Ghosal
Publisher: name: University of Illinois at Chicago
Year: 2019
Subjects: Uncategorized

description: Functional connectivity can be measured by considering co-activation of brain regions in resting-state functional magnetic resonance imaging. We explore contrasting fuctional connectivity between subjects with Autism Spectrum Disorder and controls using resting state fMRI data. Bayesian models are developed to explore differential connectivity using cross-correlated functional connectivity between region of interest pairs. Additionally, a regional-temporal model is proposed to directly model time sequence of resting state fMRI measurements at each brain region. We have implemented dynamic linear model to capture temporal structure of the data and the potential correlation between connected regions is modeled using hidden Potts model with latent variable. We apply the proposed models to analyse Autism Brain Image Data Exchange data set.
Heavy flavor $R_\text{AA}$ and $v_n$ in event-by-event viscous relativistic hydrodynamics
Creators: name: Prado, Caio A. G.
name: Noronha-Hostler, Jacquelyn
name: Cosentino, Mauro R.
name: Munhoz, Marcelo G.
name: Noronha, Jorge
name: Suaide, Alexandre A. P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Recently it has been shown that a realistic description of the medium via event-by-event viscous hydrodynamics plays an important role in the long-standing $R_\text{AA}$ vs. $v_2$ puzzle at high $p_T$. In this proceedings we begin to extend this approach to the heavy flavor sector by investigating the effects of full event-by-event fluctuating hydrodynamic backgrounds on the nuclear suppression factor and $v_2\{2\}$ of heavy flavor mesons and non-photonic electrons at intermediate to high $p_T$. We also show results for $v_3\{2\}$ of $B^0$ and D$^0$ for PbPb collisions at $\sqrt{s}=2.76$ TeV.
description: 4 pages, 3 figures, contribution to the proceedings of the Strangeness in Quark Matter conference (June 27 to July 1, 2016, Berkeley, CA, USA)