cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dispersion of motile bacteria in a porous medium
Creators: name: Dentz, Marco
name: Creppy, Adama
name: Douarche, Carine
name: Clément, Eric
name: Auradou, Harold
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: 76S05, 60K50

description: Understanding flow and transport of bacteria in porous media is crucial to technologies such as bioremediation, biomineralization or enhanced oil recovery. While physicochemical bacteria filtration is well-documented, recent studies showed that bacterial motility plays a key role in the transport process. Flow and transport experiments performed in microfluidic chips containing randomly placed obstacles confirmed that the distributions of non-motile particles stays compact, whereas for the motile strains, the distributions are characterized by both significant retention as well as fast downstream motion. For motile bacteria, the detailed microscopic study of individual bacteria trajectories reveals two salient features: (i) the emergence of an active retention process triggered by motility, (ii) enhancement of dispersion due to the exchange between fast flow channels and low flow regions in the vicinity of the solid grains. We propose a physical model based on a continuous time random walk approach. This approach accounts for bacteria dispersion via variable pore-scale flow velocities through a Markov model for equidistant particle speeds. Motility of bacteria is modeled by a two-rate trapping process that accounts for the motion towards and active trapping at the obstacles. This approach captures the forward tails observed for the distribution of bacteria displacements, and quantifies an enhanced hydrodynamic dispersion effect that originates in the interaction between flow at the pore-scale and bacterial motility. The model reproduces the experimental observations, and predicts bacteria dispersion and transport at the macroscale.
description: 30 pages, 10 figures
Stationary States of the One-Dimensional Discrete-Time Facilitated Symmetric Exclusion Process
Creators: name: Goldstein, S.
name: Lebowitz, J. L.
name: Speer, E. R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60K35, 82C22, 82C23, 82C26

description: We describe the extremal translation invariant stationary (ETIS) states of the facilitated exclusion process on $\mathbb{Z}$. In this model all particles on sites with one occupied and one empty neighbor jump at each integer time to the empty neighbor site, and if two particles attempt to jump into the same empty site we choose one randomly to succeed. The ETIS states are qualitatively different for densities $ρ<1/2$, $ρ=1/2$, and $1/2<ρ<1$, but in each density region we find states which may be grouped into families, each of which is in natural correspondence with the set of all ergodic measures on $\{0,1\}^{\mathbb{Z}}$. For $ρ<1/2$ there is one such family, containing all the ergodic states in which the probability of two adjacent occupied sites is zero. For $ρ=1/2$ there are two families, in which configurations translate to the left and right, respectively, with constant speed 2. For the high density case there is a continuum of families. We show that all ETIS states at densities $ρ\le1/2$ belong to these families, and conjecture that also at high density there are no other ETIS states. We also study the possible ETIS states which might occur if the conjecture fails.
description: 34 pages, 2 figures
Evolution of Privacy Loss in Wikipedia
Creators: name: Rizoiu, Marian-Andrei
name: Xie, Lexing
name: Caetano, Tiberio
name: Cebrian, Manuel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: The cumulative effect of collective online participation has an important and adverse impact on individual privacy. As an online system evolves over time, new digital traces of individual behavior may uncover previously hidden statistical links between an individual's past actions and her private traits. To quantify this effect, we analyze the evolution of individual privacy loss by studying the edit history of Wikipedia over 13 years, including more than 117,523 different users performing 188,805,088 edits. We trace each Wikipedia's contributor using apparently harmless features, such as the number of edits performed on predefined broad categories in a given time period (e.g. Mathematics, Culture or Nature). We show that even at this unspecific level of behavior description, it is possible to use off-the-shelf machine learning algorithms to uncover usually undisclosed personal traits, such as gender, religion or education. We provide empirical evidence that the prediction accuracy for almost all private traits consistently improves over time. Surprisingly, the prediction performance for users who stopped editing after a given time still improves. The activities performed by new users seem to have contributed more to this effect than additional activities from existing (but still active) users. Insights from this work should help users, system designers, and policy makers understand and make long-term design choices in online content creation systems.
Association between pulse width and health-related quality of life after electroconvulsive therapy in patients with unipolar or bipolar depression: an observational register-based study
Creators: name: Ernstsson, Olivia
name: Heintz, Emelie
name: Nordenskjöld, Axel
name: Johnson, Jeffrey A.
name: Korkmaz, Seher
name: Zethraeus, Niklas
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Physical Sciences not elsewhere classified
subject: Cell Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: To examine the association between pulse width and HRQoL measured within one week after electroconvulsive therapy (ECT) and at six-month follow-up in patients with unipolar or bipolar depression. This was an observational register study using data from the Swedish National Quality Registry for ECT (2011–2019). Inclusion criteria were: age ≥18 years; index treatment for unipolar/bipolar depression; unilateral electrode placement; information on pulse width; EQ-5D measurements before and after ECT. Multiple linear regressions were performed to investigate the association between pulse width (<0.5 ms; 0.5 ms; >0.5 ms) and HRQoL (EQ-5D-3L index; EQ VAS) one week after ECT (primary outcome) and six months after ECT (secondary outcome). The sample included 5,046 patients with unipolar (82%) or bipolar (18%) depression. At first ECT session, 741 patients (14.7%) had pulse width <0.5 ms, 3,639 (72.1%) had 0.5 ms, and 666 (13.2%) had >0.5 ms. There were no statistically significant associations between pulse width and HRQoL one week after ECT. In the subsample of patients with an EQ-5D index recorded six months after ECT (n = 730), patients receiving 0.5 ms had significantly lower HRQoL (−0.089) compared to <0.5 ms, after adjusting for demographic and clinical characteristics (p = .011). The corresponding analysis for EQ VAS did not show any statistically significant associations. No robust associations were observed between pulse width and HRQoL after ECT. On average, significant improvements in HRQoL were observed one week and six months after ECT for patients with unipolar or bipolar disease, independent of the pulse width received.
The Next Generation Virgo Cluster Survey. XIX. Tomography of Milky Way Substructures in the NGVS Footprint
Creators: name: Lokhorst, Deborah
name: Starkenburg, Else
name: McConnachie, Alan
name: Navarro, Julio F.
name: Ferrarese, Laura
name: Côté, Patrick
name: Liu, Chengze
name: Peng, Eric W.
name: Gwyn, Stephen D. J.
name: Cuillandre, Jean-Charles
name: Guhathakurta, Puragra
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Next Generation Virgo Cluster Survey (NGVS) is a deep $u^*giz$ survey targeting the Virgo cluster of galaxies at 16.5~Mpc. This survey provides high-quality photometry over an $\sim$ 100 deg$^2$ region straddling the constellations of Virgo and Coma Berenices. This sightline through the Milky Way is noteworthy in that it intersects two of the most prominent substructures in the Galactic halo: the Virgo Over-Density (VOD) and Sagittarius stellar stream (close to its bifurcation point). In this paper, we use deep $u^*gi$ imaging from the NGVS to perform tomography of the VOD and Sagittarius stream using main-sequence turnoff (MSTO) stars as a halo tracer population. The VOD, whose centroid is known to lie at somewhat lower declinations ($α\sim 190^\circ$, $δ\sim -5^\circ$) than is covered by the NGVS, is nevertheless clearly detected in the NGVS footprint at distances between $\sim$ 8 and 25~kpc. By contrast, the Sagittarius stream is found to slice directly across the NGVS field at distances between 25 and 40~kpc, with a density maximum at $\simeq$~35~kpc. No evidence is found for new substructures beyond the Sagittarius stream, at least out to a distance of $\sim$~90 kpc --- the largest distance to which we can reliably trace the halo using MSTO stars. We find clear evidence for a distance gradient in the Sagittarius stream across the $\sim 30$~deg of sky covered by the NGVS and its flanking fields. We compare our distance measurements along the stream to those predicted by leading stream models.
description: 14 pages, 10 figures, accepted for publication in ApJ
Bioenergetic analysis of yeast mitochondrial ATP synthase subunit 8
Creators: name: Nesbitt., Warwick Scott
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.
Cultural characteristics of glomeruli from normal and diseased kidneys
Creators: name: Neal., C. Amanda Louisa
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.
Entanglement entropy of gravitational edge modes
Creators: name: David, Justin R.
name: Mukherjee, Jyotirmoy
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 consider the linearised graviton in $4d$ Minkowski space and decompose it into tensor spherical harmonics and fix the gauge. The Gauss law of gravity implies that certain radial components of the Riemann tensor of the graviton on the sphere label the superselection sectors for the graviton. We show that among these 6 normal components of the Riemann tensor, 2 are related locally to the algebra of gauge-invariant operators in the sphere. From the two-point function of these components of the Riemann tensor on $S^2$ we compute the logarithmic coefficient of the entanglement entropy of these superselection sectors across a spherical entangling surface. For sectors labelled by each of the two components of the Riemann tensor these coefficients are equal and their total contribution is given by $-\frac{16}{3}$. We observe that this coefficient coincides with that extracted from the edge partition function of the massless spin-2 field on the 4-sphere when written in terms of its Harish-Chandra character. As a preliminary step, we also evaluate the logarithmic coefficient of the entanglement entropy from the superselection sectors labelled by the radial component of the electric field of the $U(1)$ theory in even $d$ dimensions. We show that this agrees with the corresponding coefficient of the edge Harish-Chandra character of the massless spin-1 field on $S^d$.
description: Typos corrected
The brightest (and faintest) sources in the radio sky
Creators: name: White, Sarah V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Radio observations allow us to identify a wide range of active galactic nuclei (AGN), which are galaxies that have gas accreting onto the supermassive black-hole at the centre. By observing these sources at multiple radio frequencies, a more-complete picture can be built of black-hole accretion activity. This completeness is aided by radio waves being unaffected by dust along the line-of-sight to these sources, which cannot be said for waves in the optical part of the electromagnetic spectrum. (Hence, dust obscuration leads to biases in AGN samples selected using optical observations.) A thorough compilation of ~2,000 of the brightest radio-sources in the southern sky [and so of particular relevance for the Square Kilometre Array (SKA) and its precursor/pathfinder telescopes] is the GLEAM 4-Jy (G4Jy) Sample, selected at 151 MHz, with subsets being followed up with MeerKAT and the Australia Telescope Compact Array (ATCA). Meanwhile, optical spectroscopy from the Southern African Large Telescope (SALT) is being used to derive crucial redshift information, both for G4Jy sources and for radio-faint AGN in the MeerKAT International GHz Tiered Extragalactic Exploration (MIGHTEE) Survey. The origin of the radio emission in these faint sources is a subject of great debate within the AGN/radio-astronomy communities.
description: Accepted conference-proceedings paper (restricted to 2 pages) for the '2023 IEEE Radio and Antenna Days of the Indian Ocean (RADIO)' conference, where the author won the IEEE RADIO 2023 Young Scientist Award. Also accessible via IEEE Xplore: https://ieeexplore.ieee.org/document/10146067
A wearable haptic game controller
Creators: name: Foottit, Jacques
name: Brown, Dave
name: Marks, Stefan
name: Connor, Andy M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: This paper outlines the development of a wearable game controller incorporating vibrotacticle haptic feedback that provides a low cost, versatile and intuitive interface for controlling digital games. The device differs from many traditional haptic feedback implementation in that it combines vibrotactile based haptic feedback with gesture based input, thus becoming a two way conduit between the user and the virtual environment. The device is intended to challenge what is considered an "interface" and draws on work in the area of Actor-Network theory to purposefully blur the boundary between man and machine. This allows for a more immersive experience, so rather than making the user feel like they are controlling an aircraft the intuitive interface allows the user to become the aircraft that is controlled by the movements of the user's hand. This device invites playful action and thrill. It bridges new territory on portable and low cost solutions for haptic controllers in a gaming context.
Machine learning of log-likelihood functions in global analysis of parton distributions
Creators: name: Liu, DianYu
name: Sun, ChuanLe
name: Gao, Jun
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Modern analysis on parton distribution functions (PDFs) requires calculations of the log-likelihood functions from thousands of experimental data points, and scans of multi-dimensional parameter space with tens of degrees of freedom. In conventional analysis the Hessian approximation has been widely used for the estimation of the PDF uncertainties.The Lagrange Multiplier (LM) scan while being a more faithful method is less used due to computational limitations, and is the main focus of this study. We propose to use Neural Networks (NNs) and machine learning techniques to model the profile of the log-likelihood functions or cross sections for multi-dimensional parameter space in order to overcome those limitations which work beyond the quadratic approximations and meanwhile ensures efficient scans of the full parameter space. We demonstrate the efficiency of the new approach in the framework of the CT18 global analysis of PDFs by constructing NNs for various target functions, and performing LM scans on PDFs and cross sections at hadron colliders. We further study the impact of the NOMAD dimuon data on constraining PDFs with the new approach, and find enhanced strange-quark distributions and reduced PDF uncertainties. Moreover, we show how the approach can be used to constrain new physics beyond the Standard Model (BSM) by a joint fit of both PDFs and Wilson coefficients of operators in the SM effective field theory.
description: 49 pages, 26 figures
Statistical convergence of order $α$ in probability
Creators: name: Das, Pratulananda
name: Ghosal, Sanjoy
name: Som, Sumit
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 40A35, 60B10

description: In this paper ideas of different types of convergence of a sequence of random variables in probability, namely, statistical convergence of order $α$ in probability, strong $p$-Ces$\grave{\mbox{a}}$ro summability of order $α$ in probability, lacunary statistical convergence or $S_θ$-convergence of order $α$ in probability, ${N_θ}$-convergence of order $α$ in probability have been introduced and their certain basic properties have been studied.
description: Vol- 21, Issue-2, pages 253-265 in Arab Journal of Mathematical Sciences (2015)
Triple nodal points characterized by their nodal-line structure in all magnetic space groups
Creators: name: Lenggenhager, Patrick M.
name: Liu, Xiaoxiong
name: Neupert, Titus
name: Bzdušek, Tomáš
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We analyze triply degenerate nodal points [or triple points (TPs) for short] in energy bands of crystalline solids. Specifically, we focus on spinless band structures, i.e., when spin-orbit coupling is negligible, and consider TPs formed along high-symmetry lines in the momentum space by a crossing of three bands transforming according to a 1D and a 2D irreducible corepresentation (ICR) of the little co-group. The result is a complete classification of such TPs in all magnetic space groups, including the non-symmorphic ones, according to several characteristics of the nodal-line structure at and near the TP. We show that the classification of the presently studied TPs is exhausted by 13 magnetic point groups (MPGs) that can arise as the little co-group of a high-symmetry line and which support both 1D and 2D spinless ICRs. For 10 of the identified MPGs, the TP characteristics are uniquely determined without further information; in contrast, for the 3 MPGs containing sixfold rotational symmetry, two types of TPs are possible, depending on the choice of the crossing ICRs. The classification result for each of the 13 MPGs is illustrated with first-principles calculations of a concrete material candidate.
description: 16 pages (12 figures, 5 tables) + 20 pages of Appendices (20 figures, 1 table) + references; updated with accepted version
Computational model of drug dissolution in the stomach: effects of posture and gastroparesis on drug bioavailability
Creators: name: Lee, Jae H.
name: Kuhar, Sharun
name: Seo, Jung-Hee
name: Pasricha, Pankaj J.
name: Mittal, Rajat
Publisher: name: arXiv
Year: 2022
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The oral route is the most common choice for drug administration because of convenience, low cost, and high patient compliance, but is also a complex route. The rate of dissolution and gastric emptying of the dissolved active pharmaceutical ingredient (API) into the duodenum is modulated by factors such as gastric motility, but current in-vitro procedures for assessing drug dissolution are limited in their ability to recapitulate this process. This is particularly relevant for disease conditions, such as gastroparesis, that alter the anatomy and/or physiology of the stomach. In this study we employ a biomimetic in-silico simulator based on the realistic anatomy and morphology of the stomach, to investigate the effect of body posture and stomach motility on drug bioavailability. The simulations show that changes in posture can have a significant (up to 83%) effect on the emptying rate of the API into the duodenum. Similarly, reduction in antral contractility associated with gastroparesis can also significantly reduce the dissolution of the pill as well as emptying of the API into the duodenum. The simulations show that for an equivalent motility index, reduction in gastric emptying due to neuropathic gastroparesis is larger by a factor of about five compared to myopathic gastroparesis.
description: 32 pages, 8 figures, supplemental material
Surface charge writing and non-volatile control of superconductivity in LaAlO3/KTaO3(111) heterostructure
Creators: name: Hong, Siyuan
name: Sun, Yanqiu
name: Liu, Yuan
name: Wang, Yishuai
name: Xie, Yanwu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The oxide interface between LaAlO3 and KTaO3(111) can host an electron gas that condenses into superconductivity at low temperatures. In this work, we demonstrate a local and non-volatile control of this electron gas using a biased conducting atomic force microscope tip. By scanning the tip, charges can be accumulated on the surface of LaAlO3, which subsequently tune the conduction of the buried LaAlO3/KTaO3(111) interface largely, varying from conducting (superconducting) to insulating states. The tuning effects are stable for > 20 h at room temperature. The maximum modulation of carrier density is > 8 times 10^13/cm^2. This result suggests a new model system in which rewritable superconducting, normal, and insulating states can be flexibly defined in the same material on demand.
description: 13 pages in total. 4 figures in the main text, plus 3 supplementary figures
R plasmids and bacterial chromosome mobilization
Creators: name: Nayudu., Murali
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.
Competition between orbital effects, Pauli limiting, and Fulde-Ferrell-Larkin-Ovchinnikov states in 2D transition metal dichalcogenide superconductors
Creators: name: Cho, Chang-woo
name: Ng, Cheuk Yin
name: Abdel-Hafiez, Mahmoud
name: Vasiliev, Alexander N.
name: Chareev, Dmitriy A.
name: Lebed, A. G.
name: Lortz, Rolf
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We compare the upper critical field of bulk single-crystalline samples of the two intrinsic transition metal dichalcogenide (TMD) superconductors, 2H-NbSe2 and 2H-NbS2, in high magnetic fields where their layer structure is aligned strictly parallel and perpendicular to the field, using magnetic torque experiments and a high-precision piezo-rotary positioner. While both superconductors show that orbital effects still have a significant impact when the layer structure is aligned parallel to the field, the upper critical field of NbS2 rises above the Pauli limiting field and forms a Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, while orbital effects suppress superconductivity in NbSe2 just below the Pauli limit. From the out-of-plane anisotropies, the coherence length perpendicular to the layers of 31 Å in NbSe2 is much larger than the interlayer distance, leading to a significant orbital effect suppressing superconductivity before the Pauli limit is reached, in contrast to the more 2D NbS2.
Analytical evaluation of AdS${}_4$ Witten diagrams as flat space multi-loop Feynman integrals
Creators: name: Heckelbacher, Till
name: Sachs, Ivo
name: Skvortsov, Evgeny
name: Vanhove, Pierre
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe a systematic approach for the evaluation of Witten diagrams for multi-loop scattering amplitudes of a conformally coupled scalar $ϕ^4$-theory in Euclidean AdS$_4$, by recasting the Witten diagrams as flat space Feynman integrals. We derive closed form expressions for the anomalous dimensions for all double-trace operators up to the second order in the coupling constant. We explain the relation between the flat space unitarity methods and the discontinuities of the short distance expansion on the boundary of Witten diagrams.
description: Latex. 65 pages. v2: minor corrections, version to appear in JHEP
Seeking large-scale magnetic fields in a pure-disk dwarf galaxy NGC 2976
Creators: name: Drzazga, R. T.
name: Chyży, K. T.
name: Heald, G. H.
name: Elstner, D.
name: Gallagher, J. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It is still unknown how magnetic field-generation mechanisms could operate in low-mass dwarf galaxies. Here, we present a detailed study of a nearby pure-disk dwarf galaxy NGC 2976. Unlike previously observed dwarf objects, this galaxy possesses a clearly defined disk. For the purpose of our studies, we performed deep multi-frequency polarimetric observations of NGC 2976 with the VLA and Effelsberg radio telescopes. Additionally, we supplement them with re-imaged data from the WSRT-SINGS survey. The magnetic field morphology discovered in NGC 2976 consists of a southern polarized ridge. This structure does not seem to be due to just a pure large-scale dynamo process (possibly cosmic-ray driven) at work in this object, as indicated by the RM data and dynamo number calculations. Instead, the field of NGC 2976 is modified by past gravitational interactions and possibly also by ram pressure inside the M 81 galaxy group environment. The estimates of total (7 muG) and ordered (3 muG) magnetic field strengths, as well as degree of field order (0.46), which is similar to those observed in spirals, suggest that tidally generated magnetized gas flows can further enhance dynamo action in the object. NGC 2976 is apparently a good candidate for the efficient magnetization of its neighbourhood. It is able to provide an ordered (perhaps also regular) magnetic field into the intergalactic space up to a distance of about 5 kpc. Tidal interactions (and possibly also ram pressure) can lead to the formation of unusual magnetic field morphologies (like polarized ridges) in galaxies out of the star-forming disks, which do not follow any observed component of the interstellar medium (ISM), as observed in NGC 2976. These galaxies are able to provide ordered magnetic fields far out of their main disks.
description: 16 pages
Fractional Klein-Gordon Equation on AdS$_{2+1}$
Creators: name: Basteiro, Pablo
name: Elfert, Janine
name: Erdmenger, Johanna
name: Hinrichsen, Haye
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a covariant definition of the fractional Klein-Gordon equation with long-range interactions independent of the metric of the underlying manifold. As an example we consider the fractional Klein-Gordon equation on AdS$_{2+1}$, computing the explicit kernel representation of the fractional Laplace-Beltrami operator as well as the two-point propagator of the fractional Klein-Gordon equation. Our results suggest that the propagator only exists if the mass is small compared to the inverse AdS radius, presumably because the AdS space expands faster with distance as a flat space of the same dimension. Our results are expected to be useful in particular for new applications of the AdS/CFT correspondence within statistical mechanics and quantum information.
description: 23 pages, 3 figures
Diophantine sets and Dirichlet improvability
Creators: name: Marnat, Antoine
Publisher: name: arXiv
Year: 2022
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: This note pushes further the discussion about relations between Dirichlet improvable, badly approximable and singular points held in recent joint work with Beresnevich, Guan, Velani and Ramirez, by considering Diophantine sets extending the notion of badly approximability.
Multiple feedback based wavefront shaping method to retrieve hidden signal
Creators: name: Rumman, Nazifa
name: Wang, Tianhong
name: Jennings, Kaitlin
name: Bassène, Pascal
name: Buldt, Finn
name: N'Gom, Moussa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We present an optical wavefront shaping approach that allows tracking and localization of signal hidden inside or behind a scattering medium. The method combines traditional feedback based wavefront shaping together with a switch function, controlled by two different signals. A simple, in transmission imaging system is used with two detectors: one monitors the speckle signature and the other tracks the fully hidden signal (e.g., fluorescent beads). The algorithm initially finds the optimal incident wavefront to maximize light transmission to generate a focus in the scattering medium. This modulation process redirects the scattered input signal inducing instantaneous changes in both monitored signals, which in turn locates the hidden objects. Once the response from the hidden target becomes distinct, the algorithm switches to use this signal as the feedback. We provide experimental demonstrations as a proof of concept of our approach. Potential applications of our method include extracting information from biological samples and developing non-invasive diagnosis methods.
description: 4 pages, 5 figures, submitted to Applied Physics Letters
The kilogram: inertial or gravitational mass?
Creators: name: Mana, Giovanni
name: Schlamminger, Stephan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: With the redefinition of the international system of units, the value of the Planck constant was fixed, similarly to the values of the unperturbed ground state hyperfine transition frequency of the $^{133}$Cs atom, speed of light in vacuum. Theoretically and differently from the past, the kilogram is now explicitly defined as the unit of inertial mass. Experimentally, the kilogram is realized by atom count or the Kibble balance. We show that only the former method measures the inertial mass without assuming the universality of free fall. Therefore, the agreement between the two measures can be interpreted as a test of the equivalence principle.
description: 2 pages, submitted to Metrologia
title:  К ВОПРОСУ О ЗНАЧЕНИИ ТУЧНЫХ КЛЕТОК В ПАТОМОРФОГЕНЕЗЕ  МЕСТНОГО ВОСПАЛИТЕЛЬНОГО ПРОЦЕССА
Creators: name: Гараев, Тачмурат Атагелдиевич
name: Рзаев, Дерягулы Худайгулыевич
name: Гельдыев, Аман Аннагельдыевич
Publisher: name: Астраханский государственный медицинский университет
Year: 2022
Subjects: subject: Clinical medicine
subject: FOS: Clinical medicine

description: Статья направлена на изучение роли тучных клеток в патоморфогенезе местных осложнений хронического среднего отита с помощью гистоцитоморфометрического метода. Полученные результаты работы показывают, что при хроническом среднем отите (ХСО) по сравнению с острым тучные клетки оказывают более существенное влияние на морфогенетический характер воспаления. В частности, у больных с ХСО в количестве достоверно преобладали крупные лаб-роциты (р<0,05), их отростчатые формы (р<0,01), формы с обильной метахроматичной (р<0,01) зернистостью, а также лаброциты с признаками дегрануляции и расположенные преимуще-ственно диффузно (р<0,05). Таким образом, при хроническом среднем отите тучные клетки ока-зывают более существенное влияние на морфогенетический характер воспаления по сравнению с острым. Это обуславливает частое развитие осложнений в виде полипов и грануляций, харак-теризующихся прежде всего выраженным ангиогенезом мелких сосудов. Вышесказанное позво-ляет по-новому взглянуть на существующие методики лечения больных с местными осложне-ниями при хроническом среднем отите. В этой связи устранение аллергического компонента в патоморфогенезе воспаления могло бы сыграть решающую роль в достижении эффективности лечения. Особо интересным в этом плане выглядит местное применение десенсибилизирующих лекарственных средств в сочетании с препаратами растительного происхождения при лечении данной патологии с целью снижения уровня сенсибилизации тканей.
MTMR4, a novel regulator of endocytic trafficking
Creators: name: Naughtin., Monica Jane
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.
Searching for inelastic dark matter with future LHC experiments
Creators: name: Bertuzzo, Enrico
name: Scaffidi, Andre
name: Taoso, Marco
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a dark sector containing a pair of almost degenerate states coupled to the Standard Model through a dark photon mediator. This set-up constitutes a simple realization of the inelastic dark matter scenario. The heaviest dark state is long-lived, in the limit of a small kinetic mixing among the dark photon and the Standard Model hypercharge gauge boson, and/or of a small mass splitting among the dark states. We study the prospects for detection of this scenario at proposed LHC experiments dedicated to search for long-lived particles, namely FASER, MATHUSLA, CODEX-b, AL3X, MAPP, ANUBIS and FACET. We consider both the cases of fermionic and scalar inelastic dark matter. We show that these experimental facilities can probe unexplored regions of the parameter space of this model, and we highlight their complementary roles.
description: V2 updated to match published version. 15 pages, 2 figures
Magnetic breakdown and Klein tunneling in a type-II Weyl semimetal
Creators: name: O'Brien, T. E.
name: Diez, M.
name: Beenakker, C. W. J.
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 band structure of a type-II Weyl semimetal has pairs of electron and hole pockets that coexist over a range of energies and touch at a topologically protected conical point. We identify signatures of this Weyl point in the magnetic quantum oscillations of the density of states, observable in thermodynamic properties. Tunneling between the electron and hole pockets in a magnetic field is the momentum space counterpart of Klein tunneling at a p-n junction in real space. This magnetic breakdown happens at a characteristic field that vanishes when the Fermi level approaches the Weyl point. Topologically distinct, connected or disconnected, pairs of type-II Weyl cones can be distinguished by the qualitatively different dependence of the quantum oscillations on the direction of the magnetic field.
description: 7 pages, 8 figures
Dielectric catastrophe at the Mott and Wigner transitions in a moiré superlattice
Creators: name: Tang, Yanhao
name: Gu, Jie
name: Liu, Song
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Hone, James C.
name: Mak, Kin Fai
name: Shan, Jie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The metal-insulator transition (MIT) driven by electronic correlations is a fundamental and challenging problem in condensed-matter physics. Particularly, whether such a transition can be continuous remains open. The emergence of semiconducting moiré materials with continuously tunable bandwidth provides an ideal platform to study interaction-driven MITs. Although a bandwidth-tuned MIT at fixed full electron filling of the moiré superlattice has been reported recently, that at fractional filling, which involves translational symmetry breaking of the underlying superlattice, remains elusive. Here, we demonstrate bandwidth-tuned MITs in a MoSe2/WS2 moiré superlattice at both integer and fractional fillings using the exciton sensing technique. The bandwidth is controlled by an out-of-plane electric field. The dielectric response is probed optically with the 2s exciton in a remote WSe2 sensor layer. The exciton spectral weight is negligible for the metallic state, consistent with a large negative dielectric constant. It continuously vanishes when the transition is approached from the insulating side, corresponding to a diverging dielectric constant or a "dielectric catastrophe". Our results support continuous interaction-driven MITs in a two-dimensional triangular lattice and stimulate future explorations of exotic quantum phases, such as quantum spin liquids, in their vicinities.
Unsupervised Feature Construction for Improving Data Representation and Semantics
Creators: name: Rizoiu, Marian-Andrei
name: Velcin, Julien
name: Lallich, Stéphane
Publisher: name: arXiv
Year: 2015
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Feature-based format is the main data representation format used by machine learning algorithms. When the features do not properly describe the initial data, performance starts to degrade. Some algorithms address this problem by internally changing the representation space, but the newly-constructed features are rarely comprehensible. We seek to construct, in an unsupervised way, new features that are more appropriate for describing a given dataset and, at the same time, comprehensible for a human user. We propose two algorithms that construct the new features as conjunctions of the initial primitive features or their negations. The generated feature sets have reduced correlations between features and succeed in catching some of the hidden relations between individuals in a dataset. For example, a feature like $sky \wedge \neg building \wedge panorama$ would be true for non-urban images and is more informative than simple features expressing the presence or the absence of an object. The notion of Pareto optimality is used to evaluate feature sets and to obtain a balance between total correlation and the complexity of the resulted feature set. Statistical hypothesis testing is used in order to automatically determine the values of the parameters used for constructing a data-dependent feature set. We experimentally show that our approaches achieve the construction of informative feature sets for multiple datasets.
Estimating the $k$th coefficient of $(f(z))^n$ when $k$ is not too large
Creators: name: De Angelis, Valerio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 41A60

description: We derive asymptotic estimates for the coefficient of $z^{k}$ in $\left( f\left( z\right) \right) ^{n}$ when $n\rightarrow \infty $ and $k$ is of order $n^{δ}$, where $0<δ<1,$ and $f\left( z\right) $ is a power series satisfying suitable positivity conditions and with $f\left( 0\right) \neq 0,$ $f^{\prime }\left( 0\right) =0.$ We also show that there is a positive number $\varepsilon <1$ (easily computed from the pattern of non-zero coefficients of $f\left( z\right) $) such that the same coefficient is positive for large $n$ and $\varepsilon <δ<1$, and admits an asymptotic expansion in inverse powers of $k$. We use the asymptotic estimates to prove that certain finite sums of exponential and trigonometric functions are non-negative, and illustrate the results with examples.
description: 18 pages
SWIPT in 3-D Bipolar Ad Hoc Networks with Sectorized Antennas
Creators: name: Krikidis, Ioannis
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this letter, we study the simultaneous wireless information and power transfer (SWIPT) concept in 3-D bipolar ad hoc networks with spatial randomness. Due to three spatial dimensions of the network, we introduce a 3-D antenna sectorization that exploits the horizontal and the vertical spatial separation. The impact of 3-D antenna sectorization on SWIPT performance is evaluated for the power-splitting technique by using stochastic geometry tools. Theoretical and numerical results show that 3-D sectorization achieves a more accurate beam steering in the 3-D space, which can be beneficial for both the information and the power transfer.
description: IEEE Communications Letters (accepted for publication)
Genetic analysis of the host range of the promiscuous IncP-1 plasmid R18
Creators: name: Nash., John Howard Eagles
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.
Pandemic impacts on problem gambling treatment providers
Creators: name: Turner, Nigel
name: Shi, Jing
Publisher: name: Singapore Institute of Technology
Year: 2023

description: During the Covid-19 pandemic, online gambling venues remained accessible while treatmentservices were met with constraints. Mental health service providers needed to adapt quicklyto continue supporting clients. This study examined how services for people who have gamblingand other mental health problems adapted treatment during the Covid-19 pandemic.Counsellors from two provinces in Canada were surveyed using closed- and open-endedquestions. The study was conducted in two waves, one in May to July 2021 in the middleof the pandemic, and the second from April to June 2022 as many public health restrictionswere being removed and casinos reopened. Questions included how counsellors adapted theirpractice during the pandemic and what training they felt they required to help them deliversafe and effective treatment during a pandemic. The results indicated increases in counsellordistress during the pandemic. The counsellors also reported increased stress in their clients.The participants reported a shift towards phone and online treatment during the pandemic.The counsellors in this study had concerns over technological issues, privacy issues andproblems with keeping clients engaged. There were also concerns regarding populations whodo not have access to remote treatment methods and vulnerable populations such as seniors,Indigenous groups, and people who have serious dual diagnoses. There is a need for futurepreparation in mental health treatment protocols to mitigate shortfalls in remote client care.
Strong Convergence in Posets
Creators: name: Ban, Amir
name: Linial, Nati
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We consider the following solitaire game whose rules are reminiscent of the children's game of leapfrog. The player is handed an arbitrary ordering $π=(x_1,x_2,...,x_n)$ of the elements of a finite poset $(P,\prec)$. At each round an element may "skip over" the element in front of it, i.e. swap positions with it. For example, if $x_i \prec x_{i+1}$, then it is allowed to move from $π$ to the ordering $(x_1,x_2,...,x_{i-1},x_{i+1},x_i,x_{i+2},...,x_n)$. The player is to carry out such steps as long as such swaps are possible. When there are several consecutive pairs of elements that satisfy this condition, the player can choose which pair to swap next. Does the order of swaps matter for the final ordering or is it uniquely determined by the initial ordering? The reader may guess correctly that the latter proposition is correct. What may be more surprising, perhaps, is that this question is not trivial. The proof works by constructing an appropriate system of invariants.
description: Previously titled Leapfrog in Posets
Cooperative quantum electrodynamical processes in an ellipsoidal cavity
Creators: name: Alber, Gernot
name: Trautmann, Nils
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate spontaneous photon emission and absorption processes of two two-level atoms trapped close to the focal points of an ellipsoidal cavity, thereby taking into account the full multimode scenario. In particular, we calculate the excitation probabilities of the atoms by describing the field modes semiclassically. Based on this approach, we express the excitation probabilities by a semiclassical photon path representation. Due to the special property of an ellipsoidal cavity of having two focal points, we are able to study interesting intermediate instances between well-known quantum-optical scenarios. Furthermore, the semiclassical photon path representation enables us to address the corresponding retardation effects and causality questions in a straightforward manner.
description: 14 pages, 3 figures, Optics and its Applications
Simple and Robust Boolean Operations for Triangulated Surfaces
Creators: name: Mei, Gang
name: Tipper, John C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Geometry (cs.CG)
subject: FOS: Computer and information sciences

description: Boolean operations of geometric models is an essential issue in computational geometry. In this paper, we develop a simple and robust approach to perform Boolean operations on closed and open triangulated surfaces. Our method mainly has two stages: (1) We firstly find out candidate intersected-triangles pairs based on Octree and then compute the inter-section lines for all pairs of triangles with parallel algorithm; (2) We form closed or open intersection-loops, sub-surfaces and sub-blocks quite robustly only according to the cleared and updated topology of meshes while without coordinate computations for geometric enti-ties. A novel technique instead of inside/outside classification is also proposed to distinguish the resulting union, subtraction and intersection. Several examples have been given to illus-trate the effectiveness of our approach.
description: Novel method for determining Union, Subtraction and Intersection