cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Strong correlations of neutron star radii with the slopes of nuclear matter incompressibility and symmetry energy at saturation
Creators: name: Alam, N.
name: Agrawal, B. K.
name: Fortin, M.
name: Pais, H.
name: Providência, C.
name: Raduta, Ad. R.
name: Sulaksono, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We examine the correlations of neutron star radii with the nuclear matter incompressibility, symmetry energy, and their slopes, which are the key parameters of the equation of state (EoS) of asymmetric nuclear matter. The neutron star radii and the EoS parameters are evaluated using a representative set of 24 Skyrme-type effective forces and 18 relativistic mean field models, and two microscopic calculations, all describing 2$M_\odot$ neutron stars. Unified EoSs for the inner-crust-core region have been built for all the phenomenological models, both relativistic and non-relativistic. Our investigation shows the existence of a strong correlation of the neutron star radii with the linear combination of the slopes of the nuclear matter incompressibility and the symmetry energy coefficients at the saturation density. Such correlations are found to be almost independent of the neutron star mass in the range $0.6\text{-}1.8M_{\odot}$. This correlation can be linked to the empirical relation existing between the star radius and the pressure at a nucleonic density between one and two times saturation density, and the dependence of the pressure on the nuclear matter incompressibility, its slope and the symmetry energy slope. The slopes of the nuclear matter incompressibility and the symmetry energy coefficients as estimated from the finite nuclei data yield the radius of a $1.4M_{\odot}$ neutron star in the range $11.09\text{-}12.86$ km.
description: 7 pages, 5 figures, accepted in Phys. Rev. C (Rapid Comm.)
Effective quantum unique ergodicity for Hecke-Maass newforms and Landau-Siegel zeros
Creators: name: Thorner, Jesse
Publisher: name: arXiv
Year: 2022
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We show that Landau-Siegel zeros for Dirichlet $L$-functions do not exist or quantum unique ergodicity for $\mathrm{GL}_2$ Hecke-Maass newforms holds with an effective rate of convergence. This follows from a more general result: Landau-Siegel zeros of Dirichlet $L$-functions repel the zeros of all other automorphic $L$-functions from the line $\mathrm{Re}(s)=1$.
description: 11 pages
Women and schools in colonial Victoria, 1840-1910
Creators: name: Theobald, Marjorie R.
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Time-resolved Ultrafast Interatomic Coulombic Decay in Superexcited Sodium-doped Helium Nanodroplets
Creators: name: Asmussen, Jakob D.
name: Michiels, Rupert
name: Bangert, Ulrich
name: Sisourat, Nicolas
name: Binz, Marcel
name: Bruder, Lukas
name: Danailov, Miltcho
name: Di Fraia, Michele
name: Feifel, Raimund
name: Giannessi, Luca
name: Plekan, Oksana
name: Prince, Kevin C.
name: Squibb, Richard J.
name: Uhl, Daniel
name: Wituschek, Andreas
name: Zangrando, Marco
name: Callegari, Carlo
name: Stienkemeier, Frank
name: Mudrich, Marcel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: The autoionization dynamics of superexcited superfluid He nanodroplets doped with Na atoms is studied by extreme-ultraviolet (XUV) time-resolved electron spectroscopy. Following excitation into the higher-lying droplet absorption band, the droplet relaxes into the lowest metastable atomic $1s2s$ $^{1,\,3}$S states from which Interatomic Coulombic Decay (ICD) takes places either between two excited He atoms or between an excited He atom and a Na atom attached to the droplet surface. Four main ICD channels are identified and their time constants are determined by varying the delay between the XUV pulse and a UV pulse that ionizes the initial excited state and thereby quenches ICD. The time constants for the different channels all fall in the range $\sim$1~ps indicating that the ICD dynamics are mainly determined by the droplet environment. A periodic modulation of the transient ICD signals is tentatively attributed to the oscillation of the bubble forming around the localized He excitation. The ICD efficiency depends on the total number of excited states in a droplet rather than the density of excited states pointing to a collective enhancement of ICD.
Twentieth Century Agricultural Science (Symposium)
Creators: name: Edited By:
name: Fusonie, Alan
name: Fusonie, Donna Jean
Publisher: name: Unknown
Year: 1983
Subjects: Agricultural and Food Policy
Public Economics
Research and Development/Tech Change/Emerging Technologies
Resource /Energy Economics and Policy
Teaching/Communication/Extension/Profession

description: Contents: Introduction (Alan E. Fusonie, Donna Jean Fusonie) -- Welcome (Richard A. Farley) -- Impact of Information on Agricultural Research (Orville G. Bentley) -- Beltsville Agricultural Research Center Today: Progress and Commitment (Paul A. Putnam) -- USDA Scientists: Selected Profiles, Challenges, and Achievements (Wayne D. Rasmussen) -- Underinvestment in Agricultural Research and Man-Made Famines: China as the Case Study (William A. Dando) -- Public Support for Agricultural Science: Evolution and Trends (James H. Shideler) -- Economic Benefits from Research (Robert E. Evenson) -- Meeting U. S. Agriculture’s Needs for Scientific Specificity and Comprehensiveness: Role of State Agricultural Experiment Stations and Land-Grant Universities (Keith A. Huston) -- The Centennial of the Experimental Farm Services, 1886 – 1986 (J. W. Morrison) -- Hidden Obstacles to Creativity in Agricultural Science (Stanislaus J. Dundon) -- Agricultural Journalism and the Diffusion of Scientific Knowledge in Twentieth Century America (John T. Schlebecker) -- The Role of Radio and Television in Communicating Agricultural Scientific Knowledge (Layne R. Beaty) -- Science and Society (Robert L. Clodius) -- Soil Conservation Research and Use of Research Information by the Soil Conservation Service (Ralph J. McCracken) -- The National Forests and the Campaign for Wilderness Legislation (Dennis Roth) -- The XIT Ranch: A British Agricultural Experiment Station on the Northern High Plains of Texas (William M. Holmes) -- The Utility of Plant Exploration (Jack R. Harlan) -- Plant Germplasm Resources (Quentin Jones) -- Comments (Thomas D. Isern) -- Data Banks: Future Directions and Perspectives; A Research View (Martin H. Rogoff) -- Agricultural Computing and Libraries (Stephen M. Welch) -- Future of Computers in American Agriculture and the Relationship to Libraries (Robert C. Kramer) -- Stalking the Specter of Hunger (John S. McKelvey, Jr.).
description: Sponsored By: National Agricultural Library -- Associates of the National Agricultural Library, Inc. -- Agricultural History Society. [Published in the] Journal of NAL Associates, New Series Vol. 8, Nos. 1/4, January/December 1983
Benchmarking of different strategies to include anisotropy in a curvature-driven multi-phase-field model
Creators: name: Minar, Martin
name: Moelans, Nele
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: J.2; I.6
subject: 80-10

description: Two benchmark problems for quantitative assessment of anisotropic curvature driving force in phase field method were developed and introduced. Both benchmarks contained an anisotropically shrinking grain in homogeneous matrix. The first benchmark was a shrinking Wulff shape and in the second, such inclination dependence of the kinetic coefficient was added so that the shrinkage was isotropic. In both cases the match to the expected shape was quantified by means of Hausdorff distance and the shrinkage rate was analytically expressed. Three different ways of interface energy anisotropy inclusion in a multi-phase field model were compared. Because their performance was comparable, they were tested in an additional benchmark problem, which concerned direct measurement of equilibrium triple junction angles. Based on this benchmark, only one of the three strategies to include anisotropy was reliable in strongly anisotropic systems.
description: 19 pages, 9 figures, 6 tables (main text and Supplemental Material merged). Link to the used MATLAB code in the references. In response to reviewers' comments, the main message of the paper changed and the sections Title, Abstract, Introduction, Methodology and Conclusion underwent major revision. The results are consistent with the first version
The GALEX Time Domain Survey. II. Wavelength-Dependent Variability of Active Galactic Nuclei in the Pan-STARRS1 Medium Deep Survey
Creators: name: Hung, T.
name: Gezari, S.
name: Jones, D. O.
name: Kirshner, R. P.
name: Chornock, R.
name: Berger, E.
name: Rest, A.
name: Huber, M.
name: Narayan, G.
name: Scolnic, D.
name: Waters, C.
name: Wainscoat, R.
name: Martin, D. C.
name: Forster, K.
name: Neill, J. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyze the wavelength-dependent variability of a sample of spectroscopically confirmed active galactic nuclei (AGN) selected from near-UV ($NUV$) variable sources in the GALEX Time Domain Survey that have a large amplitude of optical variability (difference-flux S/N $>$ 3) in the Pan-STARRS1 Medium Deep Survey (PS1 MDS). By matching GALEX and PS1 epochs in 5 bands ($NUV$, $g_{P1}$, $r_{P1}$, $i_{P1}$, $z_{P1}$) in time, and taking their flux difference, we create co-temporal difference-flux spectral energy distributions ($Δf$SEDs) using two chosen epochs for each of the 23 objects in our sample on timescales of about a year. We confirm the "bluer-when-brighter" trend reported in previous studies, and measure a median spectral index of the $Δf$SEDs of $α_λ$ = 2.1 that is consistent with an accretion disk spectrum. We further fit the $Δf$SEDs of each source with a standard accretion disk model in which the accretion rate changes from one epoch to the other. In our sample, 17 out of 23 ($\sim$74 %) sources are well described by this variable accretion-rate disk model, with a median average characteristic disk temperature $\bar{T}^*$ of $1.2\times 10^5$~K that is consistent with the temperatures expected given the distribution of accretion rates and black hole masses inferred for the sample. Our analysis also shows that the variable accretion rate model is a better fit to the $Δf$SEDs than a simple power law.
description: 16 pages, 11 figures, Accepted for publication in The Astrophysical Journal September, 20, 2016
Symmetric cohomology and symmetric Hochschild cohomology of cocommutative Hopf algebras
Creators: name: Shiba, Yuta
name: Sanada, Katsunori
name: Itaba, Ayako
Publisher: name: arXiv
Year: 2022
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16T05, 16E40

description: Staic defined symmetric cohomology of groups and studied that the secondary symmetric cohomology group is corresponding to group extensions and the injectivity of the canonical map from symmetric cohomology to classical cohomology. In this paper, we define symmetric cohomology and symmetric Hochschild cohomology for cocommutative Hopf algebras. The first one is a generalization of symmetric cohomology of groups. We give an isomorphism between symmetric cohomology and symmetric Hochschild cohomology, which is a symmetric version of the classical result about cohomology of groups by Eilenberg-MacLane and cohomology of Hopf algebras by Ginzburg-Kumar. Moreover, to consider the condition that symmetric cohomology coincides with classical cohomology, we investigate the projectivity of a resolution which gives symmetric cohomology.
description: 19 pages
Leadership Position Ascendancy Theory
Creators: name: KOLAWOLE Ishmael
Publisher: name: Zenodo
Year: 2021
Subjects: Power, government, authority

description: Susceptible Law states that an observer perception of an entity (i.e. person) is determined by a subliminal relation between the observer and the person and the attributes of the person in relation to position and time. Or the actions, reactions and responses of entities A and B have subliminal effect on their observer, and the judgment of the observer is determined by the respective configurations of A and B and the degree to which A and B attract their observer.
 As a result, the certainty that any option will influence a picker and that the picker will show preference for, and make any choice is determined by the degree of the pickers complementary variables harmony with the option's augment, position and time. Therefore, nobody exercises freewill by voting in an election. The ability to think, conceive, synthesize ideas and assimilate them into everyday life only prove that the human form is an 'efficient tool', doesn't mean that the form gives the ability to make independent decisions.
Power Control Theory
Creators: name: KOLAWOLE Ishmael
Publisher: name: Zenodo
Year: 2021
Subjects: Power, government, authority

description: An individual is only popular with the people in a specific society when her or his ZQuantum is in harmony with the defined territory and the society bestows honour upon her or him when in harmony with time. Hence, human can only choose from the selections and presentation made by time. Statutory position isn't divine, no position is. A person ascends to an administrative position when TIME gives her or him precedence over others by presenting the 'end description' as one of the correlative options of the appointee in the substantive year.

description: Law is a compromise . And because a law is the collective and documented agreements of the people and it is the pivot of any government, A state is only led by law, not the people that have been appointed to work in the government. Government isn't an institution to lead people. The only function or duty of any person who has the opportunity to be part of a government in any nation is to serve those who have given her or him the brief. Hence being in a statutory position doesn't make anybody a leader but rather a servant of the people she or he represent. A leader isn't someone whose influence is determined by statutory status nor position. A leader is a mentor. A person who exhibits qualities that ignite ingenuity in others. A leader has the ability to listen, to understand, to compare, to derive, to link, to ignite and to inspire.
The legacy of normalisation and social role valorisation : application of the principles of normalisation and social role valorisation in supported community residential units for people with intellectual disabilities, Victoria, Australia
Creators: name: Wilson, Christine S.
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.
Quantum money with nearly optimal error tolerance
Creators: name: Amiri, Ryan
name: Arrazola, Juan Miguel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a family of quantum money schemes with classical verification which display a number of benefits over previous proposals. Our schemes are based on hidden matching quantum retrieval games and they tolerate noise up to 23%, which we conjecture reaches 25% asymptotically as the dimension of the underlying hidden matching states is increased. Furthermore, we prove that 25% is the maximum tolerable noise for a wide class of quantum money schemes with classical verification, meaning our schemes are almost optimally noise tolerant. We use methods in semi-definite programming to prove security in a substantially different manner to previous proposals, leading to two main advantages: first, coin verification involves only a constant number of states (with respect to coin size), thereby allowing for smaller coins; second, the re-usability of coins within our scheme grows linearly with the size of the coin, which is known to be optimal. Lastly, we suggest methods by which the coins in our protocol could be implemented using weak coherent states and verified using existing experimental techniques, even in the presence of detector inefficiencies.
description: 17 pages, 5 figures
Coherent interaction-free detection of microwave pulses with a superconducting circuit
Creators: name: Dogra, Shruti
name: McCord, John J.
name: Paraoanu, Gheorghe Sorin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The interaction-free measurement is a fundamental quantum effect whereby the presence of a photosensitive object is determined without irreversible photon absorption. Here we propose the concept of coherent interaction-free detection and demonstrate it experimentally using a three-level superconducting transmon circuit. In contrast to standard interaction-free measurement setups, where the dynamics involves a series of projection operations, our protocol employs a fully coherent evolution that results, surprisingly, in a higher probability of success. We show that it is possible to ascertain the presence of a microwave pulse resonant with the second transition of the transmon, while at the same time avoid exciting the device onto the third level. Experimentally, this is done by using a series of Ramsey microwave pulses coupled into the first transition and monitoring the ground-state population.
description: 24 pages, 20 figures. Comments are welcome!
Optimizing B2B Product Offers with Machine Learning, Mixed Logit, and Nonlinear Programming
Creators: name: Colias, John V.
name: Park, Stella
name: Horn, Elizabeth
Publisher: name: arXiv
Year: 2023
Subjects: subject: Econometrics (econ.EM)
subject: FOS: Economics and business

description: In B2B markets, value-based pricing and selling has become an important alternative to discounting. This study outlines a modeling method that uses customer data (product offers made to each current or potential customer, features, discounts, and customer purchase decisions) to estimate a mixed logit choice model. The model is estimated via hierarchical Bayes and machine learning, delivering customer-level parameter estimates. Customer-level estimates are input into a nonlinear programming next-offer maximization problem to select optimal features and discount level for customer segments, where segments are based on loyalty and discount elasticity. The mixed logit model is integrated with economic theory (the random utility model), and it predicts both customer perceived value for and response to alternative future sales offers. The methodology can be implemented to support value-based pricing and selling efforts. Contributions to the literature include: (a) the use of customer-level parameter estimates from a mixed logit model, delivered via a hierarchical Bayes estimation procedure, to support value-based pricing decisions; (b) validation that mixed logit customer-level modeling can deliver strong predictive accuracy, not as high as random forest but comparing favorably; and (c) a nonlinear programming problem that uses customer-level mixed logit estimates to select optimal features and discounts.
Differentially Private Generative Adversarial Networks with Model Inversion
Creators: name: Chen, Dongjie
name: Cheung, Sen-ching Samson
name: Chuah, Chen-Nee
name: Ozonoff, Sally
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: To protect sensitive data in training a Generative Adversarial Network (GAN), the standard approach is to use differentially private (DP) stochastic gradient descent method in which controlled noise is added to the gradients. The quality of the output synthetic samples can be adversely affected and the training of the network may not even converge in the presence of these noises. We propose Differentially Private Model Inversion (DPMI) method where the private data is first mapped to the latent space via a public generator, followed by a lower-dimensional DP-GAN with better convergent properties. Experimental results on standard datasets CIFAR10 and SVHN as well as on a facial landmark dataset for Autism screening show that our approach outperforms the standard DP-GAN method based on Inception Score, Fréchet Inception Distance, and classification accuracy under the same privacy guarantee.
description: Best Student Paper Award of 13th IEEE International Workshop on Information Forensics and Security (WIFS 2021), Montpellier, France
Convex Optimization for Nonequilibrium Steady States on a Hybrid Quantum Processor
Creators: name: Lau, Jonathan Wei Zhong
name: Lim, Kian Hwee
name: Bharti, Kishor
name: Kwek, Leong-Chuan
name: Vinjanampathy, Sai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Finding the transient and steady state properties of open quantum systems is a central problem in various fields of quantum technologies. Here, we present a quantum-assisted algorithm to determine the steady states of open system dynamics. By reformulating the problem of finding the fixed point of Lindblad dynamics as a feasibility semidefinite program, we bypass several well-known issues with variational quantum approaches to solving for steady states. We demonstrate that our hybrid approach allows us to estimate the steady states of higher dimensional open quantum systems and discuss how our method can find multiple steady states for systems with symmetries.
description: 14 pages, 4 figures
A methane line list with sub-MHz accuracy in the 1250 to 1380 cm-1 range from optical frequency comb Fourier transform spectroscopy
Creators: name: Germann, Matthias
name: Hjältén, Adrian
name: Boudon, Vincent
name: Richard, Cyril
name: Krzempek, Karol
name: Hudzikowski, Arkadiusz
name: Głuszek, Aleksander
name: Soboń, Grzegorz
name: Foltynowicz, Aleksandra
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We use a Fourier transform spectrometer based on a difference frequency generation optical frequency comb to measure high-resolution, low-pressure, room-temperature spectra of methane in the 1250 - 1380 cm$^{-1}$ range. From these spectra, we retrieve line positions and intensities of 678 lines of two isotopologues: 157 lines from the $^{12}$CH${_4}$ $ν$${_4}$ fundamental band, 131 lines from the $^{13}$CH${_4}$ $ν$${_4}$ fundamental band, as well as 390 lines from two $^{12}$CH${_4}$ hot bands, $ν$${_2}$ + $ν$${_4}$ - $ν$${_2}$ and 2$ν$${_4}$ - $ν$${_4}$. For another 165 lines from the $^{12}$CH${_4}$ $ν$${_4}$ fundamental band we retrieve line positions only. The uncertainties of the line positions range from 0.19 to 2.3 MHz, and their median value is reduced by a factor of 18 and 59 compared to the previously available data for the $^{12}$CH${_4}$ fundamental and hot bands, respectively, obtained from conventional FTIR absorption measurements. The new line positions are included in the global models of the spectrum of both methane isotopologues, and the fit residuals are reduced by a factor of 8 compared to previous absorption data, and 20 compared to emission data. The experimental line intensities have relative uncertainties in the range of 1.5 - 7.7%, similar to those in the previously available data; 235 new $^{12}$CH${_4}$ line intensities are included in the global model.
A Census of Large-Scale ($\ge$ 10 pc), Velocity-Coherent, Dense Filaments in the Northern Galactic Plane: Automated Identification Using Minimum Spanning Tree
Creators: name: Wang, Ke
name: Testi, Leonardo
name: Burkert, Andreas
name: Walmsley, C. Malcolm
name: Beuther, Henrik
name: Henning, Thomas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Large-scale gaseous filaments with length up to the order of 100 pc are on the upper end of the filamentary hierarchy of the Galactic interstellar medium. Their association with respect to the Galactic structure and their role in Galactic star formation are of great interest from both observational and theoretical point of view. Previous "by-eye" searches, combined together, have started to uncover the Galactic distribution of large filaments, yet inherent bias and small sample size limit conclusive statistical results to be drawn. Here, we present (1) a new, automated method to identify large-scale velocity-coherent dense filaments, and (2) the first statistics and the Galactic distribution of these filaments. We use a customized minimum spanning tree algorithm to identify filaments by connecting voxels in the position-position-velocity space, using the Bolocam Galactic Plane Survey spectroscopic catalog. In the range of $7.^{\circ}5 \le l \le 194^{\circ}$, we have identified 54 large-scale filaments and derived mass ($\sim 10^3 - 10^5 \, M_\odot$), length (10-276 pc), linear mass density (54-8625 $M_\odot \, \rm{pc}^{-1}$), aspect ratio, linearity, velocity gradient, temperature, fragmentation, Galactic location and orientation angle. The filaments concentrate along major spiral arms. They are widely distributed across the Galactic disk, with 50% located within $\pm$20 pc from the Galactic mid-plane and 27% run in the center of spiral arms (aka "bones"). An order of 1% of the molecular ISM is confined in large filaments. Massive star formation is more favorable in large filaments compared to elsewhere. This is the first comprehensive catalog of large filaments useful for a quantitative comparison with spiral structures and numerical simulations.
description: Accepted to ApJS. 20 pages (in aastex6 compact format), 6 figures, 1 table. See http://www.eso.org/~kwang/MSTpaper for (1) a preprint with full resolution Fig 6, (2) filaments catalog (Table 1) in ASCII format, and (3) a DS9 region file for the coordinates of the filaments
Assessment of flamelet manifolds for turbulent flame-wall interactions in Large-Eddy Simulations
Creators: name: Luo, Yujuan
name: Steinhausen, Matthias
name: Kaddar, Driss
name: Hasse, Christian
name: Ferraro, Federica
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A turbulent side-wall quenching (SWQ) flame in a fully developed channel flow is studied using Large-Eddy Simulation (LES) with a tabulated chemistry approach. Three different flamelet manifolds with increasing levels of complexity are applied: the Flamelet-Generated Manifold (FGM) considering varying enthalpy levels, the Quenching Flamelet-Generated Manifold (QFM), and the recently proposed Quenching Flamelet-Generated Manifold with Exhaust Gas Recirculation (QFM-EGR), with the purpose being to assess their capability to predict turbulent flame-wall interactions (FWIs), which are highly relevant to numerical simulations of real devices such as gas turbines and internal combustion engines. The accuracy of the three manifolds is evaluated and compared a posteriori, using the data from a previously published flame-resolved simulation with detailed chemistry for reference. For LES with the FGM, the main characteristics such as the mean flow field, temperature, and major species can be captured well, while notable deviations from the reference results are observed for the near-wall region, especially for pollutant species such as \ce{CO}. In accordance with the findings from laminar FWI, improvement is also observed in the simulation with QFM under turbulent flow conditions. Although LES with the QFM-EGR shows a similar performance in the prediction of mean quantities as LES with QFM, it presents significantly better agreement with the reference data regarding instantaneous thermo-chemical states near the quenching point. This indicates the necessity to take into account the mixing effects in the flamelet manifold to correctly capture the flame-vortex interaction near the flame tip in turbulent configurations. Based on the findings from this study, suitable flamelet manifolds can be chosen depending on the aspects of interest in practical applications.
Snooker Statistics and Zipf's Law
Creators: name: Hordijk, Wim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Zipf's law is well known in linguistics: the frequency of a word is inversely proportional to its rank. This is a special case of a more general power law, a common phenomenon in many kinds of real-world statistical data. Here, it is shown that snooker statistics also follow such a mathematical pattern, but with varying (estimated) parameter values. Two types of rankings (prize money earned and centuries scored), and three time-frames (all-time, decade, and year) are considered. The results indicate that the power law parameter values depend on the type of ranking used as well as the time-frame considered. Furthermore, in some cases the resulting parameter values vary significantly over time, for which a plausible explanation is provided.
description: 7 pages, 3 figures
Laser-induced charge and spin photocurrents at BiAg$_2$ surface: a first principles benchmark
Creators: name: Adamantopoulos, T.
name: Merte, M.
name: Go, D.
name: Freimuth, F.
name: Blügel, S.
name: Mokrousov, Y.
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: Here, we report first principles calculations and analysis of laser-induced photocurrents at the surface of a prototype Rashba system. By referring to Keldysh non-equilibrium formalism combined with the Wannier interpolation scheme we perform first-principles electronic structure calculations of a prototype BiAg$_2$ surface alloy, which is a well-known material realization of the Rashba model. In addition to non-magnetic ground state situation we also study the case of in-plane magnetized BiAg$_2$. We calculate the laser-induced charge photocurrents for the ferromagnetic case and the laser-induced spin photocurrents for both the non-magnetic and the ferromagnetic cases. Our results confirm the emergence of very large in-plane photocurrents as predicted by the Rashba model. The resulting photocurrents satisfy all the symmetry restrictions with respect to the light helicity and the magnetization direction. We provide microscopic insights into the symmetry and magnitude of the computed currents based on the ab-initio multi-band electronic structure of the system, and scrutinize the importance of resonant two-band and three-band transitions for driven currents, thereby establishing a benchmark picture of photocurrents at Rashba-like surfaces and interfaces. Our work contributes to the study of the role of the interfacial Rashba spin-orbit interaction as a mechanism for the generation of in-plane photocurrents, which are of great interest in the field of ultrafast and terahertz spintronics.
Effects of mining collapse on firm performance: evidence from Australia
Creators: name: Imran, Shahzada
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: This study attempts to discover the extent to which Australian mining companies’ firm-level performance is affected by the mining collapse of 2011. To support the findings, this thesis also examines the effects on two related channels: cost of debt and investments. The difference-in-differences methodology is used on a relatively large unbalanced panel dataset comprising almost all mining and non-mining companies (except the financial sector) of the Australian Securities Exchange from 2006 to 2015. The results suggest that the mining companies have experienced a greater reduction in firm-level performance compared with the non-mining companies. The results also show that the mining companies have experienced a greater increase in the cost of debt and a greater reduction in their investments. These findings support previous literature and the expectation that the reduction in performance is associated with an increase in the cost of debt and a reduction in investments. The results are expected to contribute to our understanding of the nature of such sector-based crises on the companies within the sector compared with unaffected sectors. This thesis may have important policy implications for regulators who may bring necessary changes to their policies to assist more vulnerable companies.
The Properties of the Circumgalactic Medium in Red and Blue Galaxies: Results from the COS-GASS+COS-Halos Surveys
Creators: name: Borthakur, Sanchayeeta
name: Heckman, Timothy
name: Tumlinson, Jason
name: Bordoloi, Rongmon
name: Kauffmann, Guinevere
name: Catinella, Barbara
name: Schiminovich, David
name: Dave, Romeel
name: Moran, Sean M.
name: Saintonge, Amelie
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use the combined data from the COS-GASS and COS-Halos surveys to characterize the Circum-Galactic Medium (CGM) surrounding typical low-redshift galaxies in the mass range $\rm~M_*\sim~10^{9.5-11.5}~M_{\odot} $, and over a range of impact parameters extending to just beyond the halo virial radius ($\rm~R_{vir}$). We find the radial scale length of the distributions of the equivalent widths of the Lyman~$α$ and Si III absorbers to be 0.9 and 0.4 $\rm~R_{vir}$, respectively. The radial distribution of equivalent widths is relatively uniform for the blue galaxies, but highly patchy (low covering fraction) for the red galaxies. We also find that the Lyman~$α$ and Si III equivalent widths show significant positive correlations with the specific star-formation rate (sSFR) of the galaxy. We find a surprising lack of correlations between the halo mass (virial velocity) and either the velocity dispersions or velocity offsets of the Lyman~$α$ lines. The ratio of the velocity offset to the velocity dispersion for the Lyman~$α$ absorbers has a mean value of $\sim$ 4, suggesting that a given the line-of-sight is intersecting a dynamically coherent structure in the CGM rather than a sea of orbiting clouds. The kinematic properties of the CGM are similar in the blue and red galaxies, although we find that a significantly larger fraction of the blue galaxies have large Lyman~$α$ velocity offsets (>200 km s$^{-1}$). We show that - if the CGM clouds represent future fuel for star-formation - our new results could imply a large drop in the specific star-formation rate across the galaxy mass-range we probe.
description: 18 pages, 18 figures, 2 tables. Accepted for publication in ApJ
A general mechanism for the `$1/f$' noise
Creators: name: Yadav, Avinash Chand
name: Ramaswamy, Ramakrishna
name: Dhar, Deepak
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the response of a memoryless nonlinear device that converts an input signal $ξ(t)$ into an output $η(t)$ that only depends on the value of the input at the same time, $t$. For input Gaussian noise with power spectrum $1/f^α$, the nonlinearity modifies the spectral index of the output to give a spectrum that varies as $1/f^{α'}$ with $α' \neq α$. We show that the value of $α'$ depends on the nonlinear transformation and can be tuned continuously. This provides a general mechanism for the ubiquitous `$1/f$' noise found in nature.
description: 5 pages, 3 figures + 2 page supplementary information
Bouncing back: trauma and the HPA-axis in healthy adults
Creators: name: Klaassens, Ellen Renée
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Background: Dysregulation of the hypothalamic–pituitary–adrenal (HPA)-axis is thought to underlie stress-related psychiatric disorders such as posttraumatic stress disorder (PTSD). Some studies have reported HPA-axis dysregulation in trauma-exposed (TE) adults in the absence of psychiatric morbidity. In this dissertation we set out to unravel part of the mechanism that underlies the complex relations between trauma exposure, stress regulation, and psychopathology. Method: Mentally healthy TE subjects were compared with non-trauma-exposed (NE) healthy controls. To distinguish between the potential effects of childhood trauma and adulthood trauma, we included women exposed to childhood trauma as well as men who were exposed to trauma during adulthood. Basal HPA-axis functioning was assessed with salivary cortisol samples. HPA-axis reactivity was assessed with the dexamethasone/corticotropin-releasing hormone (Dex/CRH) test. Results: The results show that childhood trauma exposure is associated with an attenuated cortisol response after the Dex/CRH challenge test in women. In contrast, trauma exposure during adulthood was not associated with alterations in HPA-axis regulation after the Dex/CRH test. Neither childhood trauma nor adulthood trauma were associated with basal HPA-axis functioning. Conclusion: Childhood trauma rather than adulthood trauma may chronically affect HPA-axis functioning. Since the association between adulthood trauma and resilience to psychopathology cannot be explained by HPA-axis functioning alone, other factors must play a role.
Towards Landau-Ginzburg models for cominuscule spaces via the exceptional cominuscule family
Creators: name: Spacek, Peter
name: Wang, Charles
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14J33, 14M17, 14N35, 13F60, 14M25, 20G41

description: We present projective Landau-Ginzburg models for the exceptional cominuscule homogeneous spaces $\mathbb{OP}^2 = E_6^\mathrm{sc}/P_6$ and $E_7^\mathrm{sc}/P_7$, known respectively as the Cayley plane and the Freudenthal variety. These models are defined on the complement $X^\vee_\mathrm{can}$ of an anti-canonical divisor of the "Langlands dual homogeneous spaces" $\mathbb{X}^\vee = P^\vee\backslash G^\vee$ in terms of generalized Plücker coordinates, analogous to the canonical models defined for Grassmannians, quadrics and Lagrangian Grassmannians in arXiv:1307.1085, arXiv:1404.4844, arXiv:1304.4958. We prove that these models for the exceptional family are isomorphic to the Lie-theoretic mirror models defined in arXiv:math/0511124 using a restriction to an algebraic torus, also known as the Lusztig torus, as proven in arXiv:1912.09122. We also give a cluster structure on $\mathbb{C}[\mathbb{X}^\vee]$, prove that the Plücker coordinates form a Khovanskii basis for a valuation defined using the Lusztig torus, and compute the Newton-Okounkov body associated to this valuation. Although we present our methods for the exceptional types, they generalize immediately to the members of other cominuscule families.
description: 46 pages, 2 figures, code available at https://github.com/foxflo/ExceptionalCominusculeSpaces
Simulation of an Optional Strategy in the Prisoner's Dilemma in Spatial and Non-spatial Environments
Creators: name: Cardinot, Marcos
name: Gibbons, Maud
name: O'Riordan, Colm
name: Griffith, Josephine
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Multiagent Systems (cs.MA)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: This paper presents research comparing the effects of different environments on the outcome of an extended Prisoner's Dilemma, in which agents have the option to abstain from playing the game. We consider three different pure strategies: cooperation, defection and abstinence. We adopt an evolutionary game theoretic approach and consider two different environments: the first which imposes no spatial constraints and the second in which agents are placed on a lattice grid. We analyse the performance of the three strategies as we vary the loner's payoff in both structured and unstructured environments. Furthermore we also present the results of simulations which identify scenarios in which cooperative clusters of agents emerge and persist in both environments.
description: 12 pages, 8 figures. International Conference on the Simulation of Adaptive Behavior
A blow-up result for a Nakao-type weakly coupled system with nonlinearities of derivative-type
Creators: name: Palmieri, Alessandro
name: Takamura, Hiroyuki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper, we consider a weakly coupled system of a wave and damped Klein-Gordon equation with nonlinearities of derivative type. We prove a blow-up result for the Cauchy problem associated with this system for nonnegative and compactly supported data by means of an iteration argument.
SuppMovie1: Replacement of 0.5XBacNav with 0.5XNav1.5 During Spiral Wave Activity
Creators: name: Bursac, Nenad
name: Needs, Daniel
name: Wu, Tianyu
name: Nguyen, Hung
name: Henriquez, Craig S.
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 400306
subject: Computational physiology

description: Supplemental movie for the article "Prokaryotic Voltage-gated Sodium Channels are More Effective than Endogenous Nav1.5 Channels in Rescuing Cardiac Action Potential Conduction: An in Silico Study" published in AJP Heart&Circ Physiol 2023, showing spiral wave breakup when expressed BacNav channels are replaced with endogenous Nav1.5 channels.
The teaching and learning of primary science in Singapore
Creators: name: Keong, Eunice Tay Lai
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.
Iterative Quantum Optimization with Adaptive Problem Hamiltonian
Creators: name: Zhu, Yifeng Rocky
name: Joseph, David
name: Ling, Cong
name: Mintert, Florian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum optimization algorithms hold the promise of solving classically hard, discrete optimization problems in practice. The requirement of encoding such problems in a Hamiltonian realized with a finite -- and currently small -- number of qubits, however, poses the risk of finding only the optimum within the restricted space supported by this Hamiltonian. We describe an iterative algorithm in which a solution obtained with such a restricted problem Hamiltonian is used to define a new problem Hamiltonian that is better suited than the previous one. In numerical examples of the shortest vector problem, we show that the algorithm with a sequence of improved problem Hamiltonians converges to the desired solution.
description: 6 pages, 4 figures
Soil-borne disease in poor persistence of pastures: Identification of causal agents
Creators: name: van Amsterdam, Sarah
name: Bell, Nigel
name: Templeton, Matt
name: Lear, Gavin
Publisher: name: AgResearch
Year: 2023
Subjects: classificationCode: 310805
subject: Plant pathology

description: The role of soil-borne disease in the poor persistence of pastures in northern Aotearoa/New Zealand - Identification of causal agentsGlobally, soil-borne plant diseases negatively impact the productivity and persistence of agricultural systems and pastures in Aotearoa/New Zealand (AoNZ) are no exception. In recent decades, there have been repeated observations of poor persistence of sown pastures in northern AoNZ(1). Economic modelling suggests that soil disease of the dominant pasture plants in this country, Lolium perenne (perennial ryegrass) and Trifolium repens (white clover), is responsible for a $909 ha-1 year-1 reduction in Waikato pasture-based farm profitability(2). Research into possible causative agents of soil disease in pastures was primarily conducted in the 1980s to early 2000s(3) when pasture management and climate were much different to the present day. Common plant pathogenic fungi including Fusarium spp., Pythium spp., and Rhizoctonia solani are regularly detected in the roots of pasture plant species(2,3). Up-to-date research is now needed to understand the distribution and abundance of causative agents of disease in modern pasture systems. Ongoing advances in molecular biology allow us to further our understanding of this area. My PhD project will identify and understand the distribution of fungal soil-borne pathogens in pasture soils of northern AoNZ. Putative pathogenic fungi have been isolated and are being screened using in-vitro and in planta pathogenicity tests. I will develop molecular diagnostics (qPCR/ddPCR) to screen historical soil samples for confirmed pathogenic isolates. Additionally, I will search available soil microbiome datasets for the presence and abundance of these pathogens. Combined, this information can be used to develop cultural, biological, and chemical methods to mitigate against the impact of soil-borne disease in pastures, helping to improve their persistence in modern farming systems under a changing climate.1. Beukes et al., (2021). Resilient Pastures: Grassland Research and Practice Series. 17:297-306.2. Dignam et al., (2022). Journal of Sustainable Agriculture and Environment. 1:16-29.3. Wakelin et al., (2016). Australasian Plant Pathology. 45:289-296.