cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anderson-Kitaev spin liquid
Creators: name: Yamada, Masahiko G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The bond-disordered Kitaev model attracts much attention due to the experimental relevance in $α$-RuCl$_3$ and $A_3$LiIr$_2$O$_6$ ($A=$ H, D, Ag, $\textit{etc.}$). Applying a magnetic field to break the time-reversal symmetry leads to a strong modulation in mass terms for Dirac cones. Because of the smallness of the flux gap of the Kitaev model, a small bond disorder can have large influence on itinerant Majorana fermions, and Majorana fermions will be in the Anderson localization state immediately. We call this immobile liquid state Anderson-Kitaev liquid state with two localized Majorana fermions, one frozen by gauge fluctuations and the other localized by disordered mass terms. The quantization of the thermal Hall conductivity $κ/T$ disappears by a quantum Hall transition induced by a small disorder, and $κ/T$ shows a rapid crossover into the Anderson-Kitaev liquid with a negligible Hall current. Especially, the critical disorder strength $δJ_{c1} \sim 0.05$ in the unit of the Kitaev interaction would have many implications for the stability of Kitaev spin liquids.
description: 6+4 pages, 3+2 figures. This is a preprint of an article published in npj Quantum Mater. The final authenticated version is available online at: https://doi.org/10.1038/s41535-020-00285-3
Heuristic Retailer’s Day-Ahead Pricing Based on Online-Learning of Prosumer’s Optimal Energy Management Model
Creators: name: Nejati Amiri, Mohammad Hossein
name: Mehdinejad, Mehdi
name: Mohammadpour Shotorbani, Amin
name: Shayanfar, Heidarali
Publisher: name: Multidisciplinary Digital Publishing Institute
Year: 2023

description: Smart grids have introduced several key concepts, including demand response, prosumers—active consumers capable of producing, consuming, and storing both electrical and thermal energies—retail market, and local energy markets. Preserving data privacy in this emerging environment has raised concerns and challenges. The use of novel methods such as online learning is recommended to address these challenges through prediction of the behavior of market stakeholders. In particular, the challenge of predicting prosumers’ behavior in an interaction with retailers requires creating a dynamic environment for retailers to set their optimal pricing. An innovative model of retailer–prosumer interactions in a day-ahead market is presented in this paper. By forecasting the behavior of prosumers by using an online learning method, the retailer implements an optimal pricing scheme to maximize profits. Prosumers, however, seek to reduce energy costs to the greatest extent possible. It is possible for prosumers to participate in a price-based demand response program voluntarily and without the retailer’s interference, ensuring their privacy. A heuristic distributed approach is applied to solve the proposed problem in a fully distributed framework with minimum information exchange between retailers and prosumers. The case studies demonstrate that the proposed model effectively fulfills its objectives for both retailer and prosumer sides by adopting the distributed approach.
Re-using qualitative data: Qualitative researchers' understanding of and their attitude on data re-use
Creators: name: Ayoung Yoon
Publisher: name: Zenodo
Year: 2014

description: In recent years, data sharing and data reuse in scientific research have been discussed in greater frequency. This has occurred with the revolution in the field of science known as data-intensive research and the growth of data in "big science". Discussions regarding qualitative data sharing and reuse have also been very active, especially in Europe, where data archiving practices are well established. There has been a significant amount of interest in the issues related to the reuse of qualitative data. Organizations, such as the Social Research Council in the UK and the Australian Research Council have been trying to support this interest. However, the discussions do not seem to be as prominent in the United States, despite a long history of depositing and curating practices of scientific data. This study aims to understand the researchers' thoughts and perceptions regarding qualitative data reuse in the field of social science in the United States. In particular, this study will focus on the barriers or hindrances to reusing qualitative data, the appropriate conditions for reusing qualitative data, and the perspectives of qualitative researchers on data reuse. The preliminary results from the in-depth interviews with qualitative researchers in social science will be presented.
Continuous Domains in Formal Concept Analysis
Creators: name: Guo, Longchun Wang Lankun
name: Li, Qingguo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Formal Concept Analysis has proven to be an effective method of restructuring complete lattices and various algebraic domains. In this paper, the notions of attribute continuous formal context and continuous formal concept are introduced by considering a selection F of fnite subsets of attributes. Our decision of a selection F relies on a kind of generalized interior operators. It is shown that the set of continuous formal concepts forms a continuous domain, and every continuous domain can be obtained in this way. Moreover, an notion of F-morphism is also identified to produce a category equivalent to that of continuous domains with Scott-continuous functions. This paper also consider the representations of various subclasses of continuous domains such as algebraic domains, bounded complete domains and stably continuous semilattices. These results explore the fundamental idea of domain theory in Formal Concept Analysis from a categorical viewpoint.
An operational definition of quantum information scrambling
Creators: name: Monaco, Gabriele Lo
name: Innocenti, Luca
name: Cilluffo, Dario
name: Chisholm, Diana A.
name: Lorenzo, Salvatore
name: Palma, G. Massimo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Quantum information scrambling (QIS) is a characteristic feature of several quantum systems, ranging from black holes to quantum communication networks. While accurately quantifying QIS is crucial to understanding many such phenomena, common approaches based on the tripartite information have limitations due to the accessibility issues of quantum mutual information, and do not always properly take into consideration the dependence on the encoding input basis. To address these issues, we propose a novel and computationally efficient QIS quantifier, based on a formulation of QIS in terms of quantum state discrimination. We show that the optimal guessing probability, which reflects the degree of QIS induced by an isometric quantum evolution, is directly connected to the accessible min-information, a generalized channel capacity based on conditional min-entropy, which can be cast as a convex program and thus computed efficiently. By applying our proposal to a range of examples with increasing complexity, we illustrate its ability to capture the multifaceted nature of QIS in all its intricacy.
description: 7 pages, 4 figures. Comments are welcome!
Correlation effects on resonant tunneling in one-dimensional quantum wires
Creators: name: Meden, V.
name: Enss, T.
name: Andergassen, S.
name: Metzner, W.
name: Schoenhammer, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study resonant tunneling in a Luttinger liquid with a double barrier enclosing a dot region. Within a microscopic model calculation the conductance G as a function of temperature T is determined over several decades. We identify parameter regimes in which the peak value G_p(T) shows distinctive power-law behavior. For intermediate dot parameters G_p behaves in a non-universal way.
description: 4 pages, 3 figures included, version to appear in Phys. Rev. B - Rapid Communication
Brownian Motion: Theory and Experiment:: A simple Classroom Measurement of the Diffusion Coefficient
Creators: name: Basu, Kasturi
name: Baishya, Kopinjol
Publisher: name: arXiv
Year: 2003
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Brownian motion is the perpetual irregular motion exhibited by small particles immersed in a fluid. Such random motion of the particles is produced by statistical fluctuations in the collisions they suffer with the molecules of the surrounding fluid. Brownian motion of particles in a fluid (like milk particles in water) can be observed under a microscope. Here we describe a simple experimental set-up to observe Brownian motion and a method of determining the diffusion coefficient of the Brownian particles, based on a theory due to Smoluchowski. While looking through the microscope we focus attention on a fixed small volume, and record the number of particles that are trapped in that volume, at regular intervals of time. This gives us a time-series data, which is enough to determine the diffusion coefficient of the particles to a good degree of accuracy.
description: 5 pages, 4 figures
Additional file 1 of Stage-specific Plasmodium falciparum immune responses in afebrile adults and children living in the Greater Accra Region of Ghana
Creators: name: Acquah, Festus
name: Lo, Aminata
name: Kwadwo Akyea-Mensah
name: Abagna, Hamza
name: Babacar Faye
name: Theisen, Michael
name: Gyan, Ben
name: Amoah, Linda
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Computational Biology

description: Additional file 1. Statistical analysis of antibody responses obtained at each site during both the dry and rainy season.
Dependence Relations in General Relativity
Creators: name: Vassallo, Antonio
Publisher: name: arXiv
Year: 2019
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: The paper discusses from a metaphysical standpoint the nature of the dependence relation underpinning the talk of mutual action between material and spatiotemporal structures in general relativity. It is shown that the standard analyses of dependence in terms of causation or grounding are ill-suited for the general relativistic context. Instead, a non-standard analytical framework in terms of structural equation modeling is exploited, which leads to the conclusion that the kind of dependence encoded in the Einstein field equations is a novel one.
description: 33 pages, accepted for publication in the European Journal for Philosophy of Science
Acalyphes philorites Turner
Creators: name: Young, Catherine J.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Acalyphes
Acalyphes philorites

description: Acalyphes philorites Turner (Figs 1–7)
(type species)
Oviposition
3♀ code nos.: G336, G337, G339.
Oviposition period: 15–21 Feb.
Batch size: 7.4 ± 1.4 range: 3–14 (n = 8).
Realised fecundity (range): 12–26
Incubation time (days): 18 (n=1)
 Batch configuration and attachment: Attached, singly.
 Colour: Yellowish to bluish green, glittering, transparent on maturity (Fig. 1).
 Size (mm): (n=13) L = 0.81 ± 0.01, W = 0.62 ± 0.00, T = 0.48 ± 0.00
Width/length: 0.76
No. of females: 3
 Aeropylar opening size (m) (n=8): L = 2.25 ± 0.06, W = 2.23 ± 0.79.
Relative aeropylar opening size: 2.7
 Micropyles: Distinct (Figs 2 & 3)
No. of openings: 5
No. of cells in rosette: 9
No. of rows of cells in micropylar area: 5
 Shape: Moderately broad, bluntly ovoid, truncated anterior pole, dorso­ventrally flattened; anterior pole slightly angled to horizontal axis (Figs 4 & 5).
 Characteristics: Egg marked on all surfaces by hexagonal, flat cells with narrow, recessed walls, cell walls on wider top side, barely discernible, not defined by aeropyles, micropylar cell walls narrow (Figs 2–6). Aeropyles slightly elevated, openings moderately small, present on all surfaces apart from wider, lateral side (Figs 4–6). Rosette, secondary cells recessed (Figs 2 & 3). Chorion with widely spaced ridges (Fig. 7).
description: Published as part of Young, Catherine J., 2006, Descriptions of the eggs of some southern Australian Geometridae (Lepidoptera), pp. 1-294 in Zootaxa 1287 on pages 1-294
Absolute measurement of the Fano factor using a Skipper-CCD
Creators: name: Rodrigues, Dario
name: Andersson, Kevin
name: Cababie, Mariano
name: Donadon, Andre
name: Botti, Ana
name: Cancelo, Gustavo
name: Estrada, Juan
name: Fernandez-Moroni, Guillermo
name: Piegaia, Ricardo
name: Senger, Matias
name: Haro, Miguel Sofo
name: Stefanazzi, Leandro
name: Tiffenberg, Javier
name: Uemura, Sho
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Skipper-CCD can achieve deep sub-electron readout noise making possible the absolute determination of the exact number of ionized electrons in a large range, from 0 to above 1900 electrons. In this work we present a novel technique that exploits this unique capability to allow self-calibration and the ultimate determination of silicon properties. We performed an absolute measurement of the variance and the mean number of the charge distribution produced by $^{55}$Fe X-rays, getting a Fano factor absolute measurement in Si at 123K and 5.9 keV. A value of 0.119 $\pm$ 0.002 was found and the electron-hole pair creation energy was determined to be (3.749 $\pm$ 0.001) eV. This technology opens the opportunity for direct measurements of the Fano factor at low energies.
description: six pages, five figures, three tables, one equation
Validity of the scaling functional approach for polymer interfaces as a variational theory
Creators: name: Manghi, Manoel
name: Aubouy, Miguel
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss the soundness of the scaling functional (SF) approach proposed by Aubouy Guiselin and Raphael (Macromolecules 29, 7261 (1996)) to describe polymeric interfaces. In particular, we demonstrate that this approach is a variational theory. We emphasis the role of SF theory as an important link between ground-state theories suitable to describe adsorbed layers, and "classical" theories for polymer brushes.
description: 8 pages, 1 figure, to be published in Phys. Rev. E
Hydrodynamic equations for incompressible inviscid fluid in terms of generalized stream function
Creators: name: Rylov, Yuri A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Hydrodynamic equations for ideal incompressible fluid are written in terms of generalized stream function. Two-dimensional version of these equations is transformed to the form of one dynamic equation for the stream function. This equation contains arbitrary function which is determined by inflow conditions given on the boundary. To determine unique solution, velocity and vorticity (but not only velocity itself) must be given on the boundary. This unexpected circumstance may be interpreted in the sense that the fluid has more degrees of freedom, than it was believed. Besides, the vorticity is less observable quantity as compared with the velocity. It is shown that the Clebsch potentials are used essentially at the description of vortical flow.
description: 31 pages, 0 figures, The paper is reduced. Consideration of nonstationary flow has been removed
Fisiología respiratoria del camarón fantasma Neotrypaea uncinata (Milne Edwards, 1837) (Decapoda: Thalassinidea) durante la hipoxia y reoxigenación
Creators: name: Leiva, Félix P.
Publisher: name: Zenodo
Year: 2011

description: Due to the influence of tidal cycle, intertidal environment are characterized by periodic fluctuations in various environmental parameters, including oxygen, which under certain conditions can achieve extreme values. Despite this, many invertebrates live there. Thalasinids ghost shrimps is a particular decapod Infraorder characterized by burrowing habits in mudflats, where the oxygen availability is limited during low tide. In this study, oxygen consumption, oxyhemocyanin, hemolymph protein and specific activity of lactate dehydrogenase were determined in the ghost shrimp Neotrypaea uncinata, at different oxygen levels, in acute hypoxia and during reoxygenation. All physiological parameters were modulated by hypoxia exposure. At different oxygen level, the oxygen consumption was independent until 4-9 kPa, while an increase in both hemocyanin and blood proteins at PO2<4 kPa occurred. Although an effect of hypoxia and reoxygenation on specific activity of lactate dehydrogenase was not observed, at 12-hr recovery, oxygen consumption and hemocyanin showed values similar to controls. Oxy-regulation and increased of oxyhemocyanin concentration during hypoxia are postulated as physiological responses to cope oxygen deficiency produced during low tide, which would allow N. uncinata to cope with hypoxic conditions. The information obtained in this study is not only important for understanding the physiological mechanisms exhibited by N. uncinata during hypoxia, but also provides information relevant to a scenario of changing conditions in the marine environment.
Missed opportunities in large scale comparison of QSAR and conformal prediction methods and their applications in drug discovery
Creators: name: Krstajic, Damjan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Recently Bosc et al. (J Cheminform 11(1): 4, 2019), published an article describing a case study that directly compares conformal predictions with traditional QSAR methods for large-scale predictions of target-ligand binding. We consider this study to be very important. Unfortunately, we have found several issues in the authors' approach as well as in the presentation of their findings.
On the Clock Paradox in the case of circular motion of the moving clock
Creators: name: Iorio, Lorenzo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Classical Physics (physics.class-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In this paper we deal analytically with a version of the so called clock paradox in which the moving clock performs a circular motion of constant radius. The rest clock is denoted as (1), the rotating clock is (2), the inertial frame in which (1) is at rest and (2) moves is I and, finally, the accelerated frame in which (2) is at rest and (1) rotates is A. By using the General Theory of Relativity in order to describe the motion of (1) as seen in A we will show the following features. I) A differential aging between (1) and (2) occurs at their reunion and it has an absolute character, i.e. the proper time interval measured by a given clock is the same both in I and in A. II) From a quantitative point of view, the magnitude of the differential aging between (1) and (2) does depend on the kind of rotational motion performed by A. Indeed, if it is uniform there is no any tangential force in the direction of motion of (2) but only normal to it. In this case, the proper time interval reckoned by (2) does depend only on its constant velocity v=romega. On the contrary, if the rotational motion is uniformly accelerated, i.e. a constant force acts tangentially along the direction of motion, the proper time intervals $do depend$ on the angular acceleration alpha. III) Finally, in regard to the sign of the aging, the moving clock (2) measures always a $shorter$ interval of proper time with respect to (1).
description: LaTex2e, 9 pages, no figures, no tables. It is the follow-on of the paper physics/0405038
Generating octave-bandwidth soliton frequency combs with compact, low-power semiconductor lasers
Creators: name: Briles, Travis C.
name: Yu, Su-Peng
name: Drake, Tara E.
name: Stone, Jordan R.
name: Papp, Scott B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report a comprehensive study of low-power, octave-bandwidth, single-soliton microresonator frequency combs in both the 1550 nm and 1064 nm bands. Our experiments utilize fully integrated silicon-nitride Kerr microresonators, and we demonstrate direct soliton generation with widely available distributed-Bragg-reflector lasers that provide less than 40 mW of chip-coupled laser power. We report measurements of soliton thermal dynamics and demonstrate how rapid laser-frequency control, consistent with the thermal timescale of a microresonator, facilitates stabilization of octave-bandwidth soliton combs. Moreover, since soliton combs are completely described by fundamental linear and nonlinear dynamics of the intraresonator field, we demonstrate the close connection between modeling and generation of octave-bandwidth combs. Our experiments advance the development of self-referenced frequency combs with integrated-photonics technology, and comb-laser sources with tens of terahertz pulse bandwidth across the near-infrared.
description: 9 pages, 5 figures. Section IV supersedes unpublished supplementary material found in an earlier manuscript from the authors (arXiv:1711.06251v2)
Additional file 1 of Persistent depressive disorder across the adult lifespan: results from clinical and population-based surveys in Germany
Creators: name: Nübel, Julia
name: Guhn, Anne
name: Müllender, Susanne
name: Le, Hong
name: Cohrdes, Caroline
name: Köhler, Stephan
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Computational Biology

description: Additional file 1. Unadjusted effect estimates for health-related correlates in cases of PDD vs. NCMDD (ref.) during the lifetime.
Constraining superheavy dark matter model of UHECR with SUGAR data
Creators: name: Kim, Hang Bae
name: Tinyakov, Peter
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Models which associate the origin of the ultra-high energy cosmic rays (UHECR) with decays of relic superheavy particles predict the anisotropy of UHECR flux toward the Galactic center. We use the existing SUGAR data, which covered the Galactic center best so far, to look for such a signal and limit the fraction of UHECR produced by this mechanism. The absence of anisotropy toward the Galactic center in the SUGAR data implies at 95% confidence level that the fraction of SHDM-related cosmic rays should be less than 20% at $E>1\times10^{19}$ eV and less than 50% at $E>4\times10^{19}$ eV.
description: 10 pages, 12 figures
A playbook on obtaining funding to archive a prominent longitudinal study
Creators: name: Chiu-Chuang Chou
Publisher: name: Zenodo
Year: 2014

description: The Center for Demography on Health and Aging (CDHA) at the University of Wisconsin-Madison recently received a small research grant (R03AG045503) from the National Institute on Aging (NIA) to archive three waves of the National Survey of Families and Households (NSFH). This project will evaluate, organize and prepare all public-use data and documentation files from the NSFH project website (http://www.ssc.wisc.edu/nsfh) for archiving in publicly-accessible archives. I will share our experience in writing grant proposals and the evaluation procedure on R03 grant proposals at NIA. Methods and specific aims for this project will be described as well.
The Nature of Starburst Activity in M82
Creators: name: Schreiber, N. M. Forster
name: Genzel, R.
name: Lutz, D.
name: Sternberg, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new evolutionary synthesis models of M82 based mainly on observations consisting of near-infrared integral field spectroscopy and mid-infrared spectroscopy. The models incorporate stellar evolution, spectral synthesis, and photoionization modeling, and are optimized for 1-45 micron observations of starburst galaxies. The data allow us to model the starburst regions on scales as small as 25 pc. We investigate the initial mass function (IMF) of the stars and constrain quantitatively the spatial and temporal evolution of starburst activity in M82. We find a typical decay timescale for individual burst sites of a few million years. The data are consistent with the formation of very massive stars (> 50-100 Msun) and require a flattening of the starburst IMF below a few solar masses assuming a Salpeter slope at higher masses. Our results are well matched by a scenario in which the global starburst activity in M82 occurred in two successive episodes each lasting a few million years, peaking about 10 and 5 Myr ago. The first episode took place throughout the central regions of M82 and was particularly intense at the nucleus while the second episode occurred predominantly in a circumnuclear ring and along the stellar bar. We interpret this sequence as resulting from the gravitational interaction M82 and its neighbour M81, and subsequent bar-driven evolution. The short burst duration on all spatial scales indicates strong negative feedback effects of starburst activity, both locally and globally. Simple energetics considerations suggest the collective mechanical energy released by massive stars was able to rapidly inhibit star formation after the onset of each episode.
description: 48 pages, incl. 16 Postscript figures; accepted for publication in the Astrophysical Journal
Supplementary Information S3 from Episodes of opposing survival and reproductive selection cause strong fluctuating selection on seasonal migration versus residence
Creators: name: Acker, Paul
name: Burthe, Sarah J.
name: Newell, Mark A.
name: Grist, Hannah
name: Gunn, Carrie
name: Harris, Michael P.
name: Payo-Payo, Ana
name: Swann, Robert
name: Wanless, Sarah
name: Daunt, Francis
name: Reid, Jane M.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: Posterior Predictive Checks
A Fast Macromodeling Approach to Efficiently Simulate Inhomogeneous Electromagnetic Surfaces
Creators: name: Patel, Utkarsh R.
name: Triverio, Piero
name: Hum, Sean V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: The full-wave simulation of complex electromagnetic surfaces such as reflectarrays and metasurfaces is a challenging problem. In this paper, we present a macromodeling approach to efficiently simulate complex electromagnetic surfaces composed of PEC traces, possibly with fine features, on a finite-sized multilayer dielectric substrate. In our approach, we enclose each element of the structure with a fictitious surface. By applying the equivalence principle on each surface, we derive a macromodel for each element of the array. This macromodel consists of a linear operator that relates the equivalent electric and magnetic current densities introduced on the fictitious surface. Mutual coupling between the elements of the structure is captured by the equivalent current densities in a fully accurate way. The crux of the proposed technique is to solve for equivalent current densities on the fictitious surface instead of directly solving for the actual current densities on the original scatterer. When simulating complex surfaces, this approach leads to fewer unknowns and better conditioning. We also propose a rigorous acceleration algorithm based on the fast Fourier transform to simulate electrically large surfaces. Numerical results demonstrate that the proposed approach is significantly faster and requires less memory than commercial solvers based on the surface integral equation method, while giving accurate results.
The nature of nature : an exploration of botanical themes, growth patterns and ornamental traditions, and the operation of metaphor and visual interpretations of life and growth as a means to abstraction in painting
Creators: name: Shepherdson, Kerry Anne
Publisher: name: The Australian National University
Year: 2011
Subjects: subject: N6490.S54 2011
subject: Art, Abstract
subject: Nature (Aesthetics)
subject: Plants in art.
subject: Painting ExhibitionsAustralian

description: The presentation of this Master of Philosophy thesis consists of studio practice-led research in the form of an exhibition of paintings at the School of Art Gallery from 16 March-1 April 2011, an exegesis giving a full account of the nature and development of the research undertaken during the course of the study, and two coursework components undertaken in the first year. The work explores botanical themes, growth patterns and ornamental traditions, and the operation of metaphor and visual interpretations of life and growth as a means to abstraction in painting.
Dirce lunaris Meyrick 1890
Creators: name: Young, Catherine J.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Dirce
Dirce lunaris

description: Dirce lunaris Meyrick (Figs 16–21)
(type species)
Oviposition
10♀ code nos.: G105­7, G115, G117, G308­11, G325.
Oviposition period: 2–22 Dec.
Batch size: 22.6 ± 4.3 range: 4–60 (n = 19)
Mean fecundity: 42.9 ± 8.4 (range: 4–90)
Incubation time (days) (n=14): 11.1 ± 0.6
 Batch configuration and attachment: Loose.
 Colour: Very pale green, becoming darker at poles, then pink with darker streaks, transparent on maturity (Fig. 16).
 Size (mm): (n=15) L = 0.81 ± 0.01, W = 0.60 ± 0.00, T = 0.50 ± 0.01
Width/length: 0.75
No. of females: 3
 Aeropylar opening size (m) (n=4): L = 0.31 ± 0.05, W = 0.27 ± 0.02.
Relative aeropylar opening size: 0.4
 Micropyles: Distinct (Figs 17 & 18)
No. of openings: 4
No. of cells in rosette: 5
No. of rows of cells in micropylar area: 4
 Shape: Moderately broad, bluntly ovoid, truncated anterior pole, dorso­ventrally flattened; anterior pole slightly angled to horizontal axis (Figs 16, 17 & 19).
 Characteristics: Egg marked on all surfaces by hexagonal, flat cells, cell form on wider top side, barely discernible (Figs 19–21), micropylar cell walls narrow, shallowly reticulated (Figs 17 & 18). Aeropyles very inconspicuous, very small, openings extremely small, present on all surfaces (Fig. 21). Rosette, secondary cells recessed (Figs 17 & 18). Chorion smooth, undulating (Fig. 21).
description: Published as part of Young, Catherine J., 2006, Descriptions of the eggs of some southern Australian Geometridae (Lepidoptera), pp. 1-294 in Zootaxa 1287 on pages 1-294
Tracing the star formation history of cluster galaxies using the Halpha/UV flux ratio
Creators: name: Iglesias-Paramo, J.
name: Boselli, A.
name: Gavazzi, G.
name: Zaccardo, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Since the Halpha and UV fluxes from galaxies are sensitive to stellar populations of ages < 10^7 and ~ 10^8 yr respectively, their ratio f(Halpha)/f(UV) provides us with a tool to study the recent t < 10^8 yr star formation history of galaxies, an exercise that we present here applied to 98 galaxies in 4 nearby clusters (Virgo, Coma, Abell 1367 and Cancer). The observed f(Halpha)/f(UV) ratio is ~ a factor of two smaller than the expected one as determined from population synthesis models assuming a realistic delayed, exponentially declining star formation history. We discuss various mechanisms that may have affected the observed f(Halpha)/f(UV) ratio and we propose that the above discrepancy arises from either the absorption of Lyman continuum photons by dust within the star formation regions or from the occurrence of star formation episodes. After splitting our sample into different subsamples according to evolutionary criteria we find that our reference sample of galaxies unaffected by the cluster environment show an average value of f(Halpha)/f(UV) two times lower than the expected one. We argue that this difference must be mostly due to absorption of ~ 45% of the Lyman continuum photons within star forming regions. Galaxies with clear signs of an ongoing interaction show average values of f(Halpha)/f(UV) slightly higher than the reference value, as expected if those objects had SFR increased by a factor of ~ 4. The accuracy of the current UV and Halpha photometry is not yet sufficient to clearly disentangle the effect of interactions on the f(Halpha)/f(UV) ratio, but significant observational improvements are shortly expected to result from the GALEX mission.
description: 25 pages, 8 figures, accepted for publication in A&A
Night sky brightness at sites from DMSP-OLS satellite measurements
Creators: name: Cinzano, Pierantonio
name: Elvidge, Cristopher D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We apply the sky brightness modelling technique introduced and developed by Roy Garstang to high-resolution DMSP-OLS satellite measurements of upward artificial light flux and to GTOPO30 digital elevation data in order to predict the brightness distribution of the night sky at a given site in the primary astronomical photometric bands for a range of atmospheric aerosol contents. This method, based on global data and accounting for elevation, Earth curvature and mountain screening, allows the evaluation of sky glow conditions over the entire sky for any site in the World, to evaluate its evolution, to disentangle the contribution of individual sources in the surrounding territory, and to identify main contributing sources. Sky brightness, naked eye stellar visibility and telescope limiting magnitude are produced as 3-dimensional arrays whose axes are the position on the sky and the atmospheric clarity. We compared our results to available measurements.
description: 14 pages, 12 figures, accepted for publication in MNRAS, 17 june 2004
Dynamical analysis of the nonlinear growth of the m=n=1 resistive internal mode
Creators: name: Firpo, Marie-Christine
name: Coppi, Bruno
Publisher: name: arXiv
Year: 2003
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: General Physics (physics.gen-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: A dynamical analysis is presented that self-consistently takes into account the motion of the critical layer, in which the magnetic field reconnects, to describe how the m=n=1 resistive internal kink mode develops in the nonlinear regime. The amplitude threshold marking the onset of strong nonlinearities due to a balance between convective and mode coupling terms is identified. We predict quantitatively the early nonlinear growth rate of the m=n=1 mode below this threshold.
Multi-messenger astronomy in the new physics modality with GPS constellation
Creators: name: Sen, Arko P.
name: Pfeffer, Kalia
name: Ries, Paul
name: Blewitt, Geoffrey
name: Derevianko, Andrei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Atomic Physics (physics.atom-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We explore a novel, exotic physics, modality in multi-messenger astronomy. We are interested in exotic fields emitted by the mergers and their direct detection with a network of atomic clocks. We specifically focus on the rubidium clocks onboard satellites of the Global Positioning System. Bursts of exotic fields may be produced during the coalescence of black hole singularities, releasing quantum gravity messengers. To be detectable such fields must be ultralight and ultra-relativistic and we refer to them as exotic low-mass fields (ELFs). Since such fields possess non-zero mass, the ELF bursts lag behind the gravitational waves emitted by the very same merger. Then the gravitational wave observatories provide a detection trigger for the atomic clock networks searching for the feeble ELF signals. ELFs would imprint an anti-chirp transient across the sensor network. ELFs can be detectable by atomic clocks if they cause variations in fundamental constants. We report our progress in the development of techniques to search for ELF bursts with clocks onboard GPS satellites. We focus on the binary neutron star merger GW170817 of August 17, 2017. We find an intriguing excess in the clock noise post LIGO gravitational wave trigger. Potentially the excess noise could be explained away by the increased solar electron flux post LIGO trigger.
description: 9th Symposium on Frequency Standards and Metrology
Preventable and treatable causes of infant death : examining neonatal and post neonatal mortality in rural Bangladesh
Creators: name: Khorshed, Mahmuda
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: RJ60.B3 K56 2010
subject: Newborn infants Mortality Prevention.Bangladesh
subject: Newborn infants Diseases Prevention.Bangladesh
subject: Infant health services Bangladesh
subject: Pregnancy Complications Prevention.Bangladesh
subject: Developing countries

description: Background: Neonatal mortality is a major burden in developing countries. Most neonatal deaths in Bangladesh can be prevented by simple interventions or by preventive measures before birth, better delivery practices or basic treatments after birth. Researchers over the years have focused on upgrading health care options to combat particular causes of disease but simple preventive measures before birth are often ignored. The outcome of neonatal illnesses depends on how it is managed and when. An illness that is addressed before the actual occurrence will have a better outcome especially when it involves newly-born neonates who have limited immunity. Thus, understanding the neonatal causes of deaths is an effective way to improve neonatal outcomes at low cost. Study Design: This study used primary data from two ICDDR,B surveillance sites, Abhoynagar and Mirsarai from the period 1997-2006 and analysed the major 'preventable causes' that can be prevented before the birth of the baby. It also identified the 'treatable causes' that are not amenable to prevention before the birth of the baby. This categorization is based on context of a developing country as Bangladesh where advanced techniques to treat severe conditions is unavailable or expensive. A particular cause of death can potentially be prevented or treated but consideration needs to be given to what is feasible in terms of available resources. The study compares deaths between the two surveillance sites and observes some of the biological, social and health care variables associated with preventable and treatable causes of deaths. Result of Neonatal death causes: Preventable causes of neonatal deaths comprised 75 percent of all neonatal deaths signifying the importance of targeted interventions before birth .Major identified preventable causes were prematurity (48.9%), birth asphyxia(30.2%), maternal and pregnancy-related complications (16.5%)),and neonatal tetanus (4.4%). Pneumonia (66.4%) and sepsis (33.6%) were the two treatable causes identified. Preventable deaths comprised 79.5% (163/205) of deaths in Abhoynagar and 69.2% (144/208) of deaths in Mirsarai. Result of Post-neonatal causes of death: The study grouped preventable (Diarrhoea and malnutrition, composed 30%) and treatable (Pneumonia, sepsis and SIDS, comprise 70%) causes of post-neonatal deaths. Except for sepsis, all causes of deaths were found in greater proportion in Mirsarai. Conclusion: The study found that preventable causes constitute the majority of neonatal deaths in Bangladesh. To address the majority of causes of neonatal deaths, interventions are needed to focus on the period before birth of the baby.
Multi-copy activation of genuine multipartite entanglement in continuous-variable systems
Creators: name: Baksová, Klára
name: Leskovjanová, Olga
name: Mišta, Ladislav
name: Agudelo, Elizabeth
name: Friis, Nicolai
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Multi-copy activation of genuine multipartite entanglement (GME) is a phenomenon whereby multiple copies of biseparable but fully inseparable states can exhibit GME. This was shown to be generically possible in finite dimensions. Here, we extend this analysis to infinite dimensions. We provide examples of GME-activatable non-Gaussian states. For Gaussian states, we apply a necessary biseparability criterion for the covariance matrix and show that it cannot detect GME activation. We further identify fully inseparable Gaussian states that satisfy the criterion but show that multiple and, in some cases, even single copies are GME. Thus, we show that the covariance-matrix biseparability criterion is not sufficient even for Gaussian states.
description: 8+11 pages, 2 figures; extended results, version accepted for publication
title: Critical media literacy and English for academic purposes: an examination of teacher and student perspectives and practices
Creators: name: Perks, Bradley
Publisher: name: University of Southern Queensland
Year: 2023
Subjects: classificationCode: 3999
subject: Other Education
subject: FOS: Educational sciences

description: This study aimed to develop empirical and theoretical understandings of the relationship between critical media literacy and English for Academic Purposes (EAP) language learning contexts. EAP courses are for students from non-English speaking backgrounds to prepare them to meet the more complex course demands such as University courses. There is a pre-occupation with developing students’ functional language skills in English for Academic Purposes courses, rather than understanding the ideational meaning that language also brings with it. This study explored English for Academic Purposes teachers’ language-related literacy practices through the integration of critical media literacies in the classroom, to: 1) identify the range of critical literacy skills that English for Academic Purposes students require in this media-saturated age; 2) identify useful critical media literacy skills; and 3) generate a framework for English for Academic Purposes curriculum design that develops students’ critical media literacy skills. This single-sited case study research was conducted in a private language school in Queensland. The methodology was informed by a pragmatist approach combined with a conceptual focus on Practice Architectures to employ a design-based research method. Data collection included interviews with teachers and student focus groups, as well as field notes, research reflections and work samples, which were thematically analysed to inform the development of critical media literacy skills in English for Academic Purposes curriculum. The results of the study will contribute to empirical knowledge and theories regarding critical media literacy. The results may also augment professional development programs and teachers’ professional skills and knowledge to enhance the concept of academic literacy in English for Academic Purposes programs, to instil a broader impression of literacy rather than functional literacy that focuses solely on developing students’ foundational English linguistic skills.
Rethinking Jets with Energy Correlators: Tracks, Resummation and Analytic Continuation
Creators: name: Chen, Hao
name: Moult, Ian
name: Zhang, XiaoYuan
name: Zhu, Hua Xing
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We introduce an infinite set of jet substructure observables, derived as projections of $N$-point energy correlators, that are both convenient for experimental studies and maintain remarkable analytic properties derived from their representations in terms of a finite number of light ray operators. We show that these observables can be computed using tracking or charge information with a simple reweighting by integer moments of non-perturbative track or fragmentation functions. Our results for the projected $N$-point correlators are analytic functions of $N$, allowing us to derive resummed results to next-to-leading logarithmic accuracy for all $N$. We analytically continue our results to non-integer values of $N$ and define a corresponding analytic continuation of the observable, which we term a $ν$-correlator, that can be measured on jets of hadrons at the LHC. This enables observables that probe the leading twist collinear dynamics of jets to be placed into a single analytic family, which we hope will lead to new insights into jet substructure.
description: 25 pages, many colorful illustrations. v2. Updated to match journal version
Group-Theoretical Aspects of Orbifold and Conifold GUTs
Creators: name: Hebecker, Arthur
name: Ratz, Michael
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by the simplicity and direct phenomenological applicability of field-theoretic orbifold constructions in the context of grand unification, we set out to survey the immensely rich group-theoretical possibilities open to this type of model building. In particular, we show how every maximal-rank, regular subgroup of a simple Lie group can be obtained by orbifolding and determine under which conditions rank reduction is possible. We investigate how standard model matter can arise from the higher-dimensional SUSY gauge multiplet. New model building options arise if, giving up the global orbifold construction, generic conical singularities and generic gauge twists associated with these singularities are considered. Viewed from the purely field-theoretic perspective, such models, which one might call conifold GUTs, require only a very mild relaxation of the constraints of orbifold model building. Our most interesting concrete examples include the breaking of E_7 to SU(5) and of E_8 to SU(4)xSU(2)xSU(2) (with extra factor groups), where three generations of standard model matter come from the gauge sector and the families are interrelated either by SU(3) R-symmetry or by an SU(3) flavour subgroup of the original gauge group.
description: references added