cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Techniques And Results For The Calibration Of The MST Prototype For The Cherenkov Telescope Array
Creators: name: Oakes, Louise
name: Garczarczyk, Markus
name: Kaphle, Stephan
name: Mayer, Michael
name: Schlenstedt, Stefan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The next generation instrument for ground-based gamma-ray astronomy will be the Cherenkov Telescope Array (CTA), consisting of approximately 100 telescopes in three sizes, built on two sites with one each in the Northern and Southern Hemi- spheres. Up to 40 of these will be Medium Size Telescopes (MSTs) which will dominate sensitivity in the core energy range. Since 2012, a full size mechanical prototype for the modified 12 m Davies-Cotton design MST has been in operation in Berlin. This doc- ument describes the techniques which have been implemented to calibrate and optimise the mechanical and optical performance of the prototype, and gives the results of over three years of observations and measurements. Pointing calibration techniques will be discussed, along with the development of a bending model, and calibration of the CCD cameras used for pointing measurements. Additionally alignment of mirror segments using the Bokeh method is shown.
description: Contribution to the 6th International Symposium on High Energy Gamma-Ray Astronomy (Gamma2016), July 11-15, 2016, Heidelberg, Germany. To be published in the AIP Conference Proceedings
Constructing Span Categories From Categories Without Pullbacks
Creators: name: Weisbart, David
name: Yassine, Adam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18B10, 18F99

description: Span categories provide an abstract framework for formalizing mathematical models of certain systems. The mathematical descriptions of some systems, such as classical mechanical systems, require categories that do not have pullbacks, and this limits the utility of span categories as a formal framework. Given categories $\mathscr{C}$ and $\mathscr{C}^\prime$ and a functor $\mathcal F$ from $\mathscr{C}$ to $\mathscr{C}^\prime$, we introduce the notion of an $\mathcal F$ pullback of a cospan in $\mathscr{C}$, as well as the notion of span tightness of $\mathcal F$. If $\mathcal F$ is span tight, then we can form a generalized span category ${\rm Span}(\mathscr{C},\mathcal F)$ and circumvent the technical difficulty of $\mathscr{C}$ failing to have pullbacks. Composition in ${\rm Span}(\mathscr{C},\mathcal F)$ uses $\mathcal F$-pullbacks rather than pullbacks and in this way differs from the category ${\rm Span}(\mathscr{C})$, but reduces to it when both $\mathscr{C}$ has pullbacks and $\mathcal F$ is the identity functor.
description: 21 pages, 14 figures
The isoperimetric problem for regular and crystalline norms in $\mathbb H^1$
Creators: name: Franceschi, Valentina
name: Monti, Roberto
name: Righini, Alberto
name: Sigalotti, Mario
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Metric Geometry (math.MG)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49Q10, 52B60, 53C17

description: We study the isoperimetric problem for anisotropic left-invariant perimeter measures on $\mathbb R^3$, endowed with the Heisenberg group structure. The perimeter is associated with a left-invariant norm $ϕ$ on the horizontal distribution. We first prove a representation formula for the $ϕ$-perimeter of regular sets and, assuming some regularity on $ϕ$ and on its dual norm $ϕ^*$, we deduce a foliation property by sub-Finsler geodesics of $\mathrm C^2$-smooth surfaces with constant $ϕ$-curvature. We then prove that the characteristic set of $\mathrm C^2$-smooth surfaces that are locally extremal for the isoperimetric problem is made of isolated points and horizontal curves satisfying a suitable differential equation. Based on such a characterization, we characterize $\mathrm C^2$-smooth $ϕ$-isoperimetric sets as the sub-Finsler analogue of Pansu's bubbles. We also show, under suitable regularity properties on $ϕ$, that such sub-Finsler candidate isoperimetric sets are indeed $\mathrm C^2$-smooth. By an approximation procedure, we finally prove a conditional minimality property for the candidate solutions in the general case (including the case where $ϕ$ is crystalline).
A Golden Age of General Relativity? Some remarks on the history of general relativity
Creators: name: Goenner, Hubert F. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In papers on the history of general relativity and in personal remembrances of relativists, keywords like "renaissance" and "golden age" of general relativity have been used. We try to show that the first label rests on a weak empirical basis. The second one, while describing a period of vivid growth in research in general relativity, exaggerates the importance of this particular development.
Outreach on the edge : an exploration of the concept of outreach and the consequences of its marginalisation within Australian archive programs between 1998 and 2000
Creators: name: Nicholls, Catherine Victoria.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Strain hardening mechanism induced by basal/pyramidal dislocation reactions in a 3D-printed high-strength titanium alloy
Creators: name: Yan, Qiaodan
name: Lin, Xin
name: Yu, Jun
name: Lu, Xufei
name: Huang, Weidong
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Biophysics
Space Science
Physical Sciences not elsewhere classified
Medicine
Biological Sciences not elsewhere classified
Mental Health

description: The high yield ratio and low strain hardening ability of titanium alloys significantly limit their engineering applications. In this work, a Ti65Zr30Cu5 (at.%) alloy with nanoscale α laths was additively manufactured and achieved a high yield strength of 1274 MPa and a high strain hardening rate up to 40% of the shear modulus. Results show that universal basal/pyramidal dislocation reactions occur during the tensile deformation process. This triggers high-density sessile 〈c 〉 dislocation junctions, which accumulate and pin other mobile dislocations. Consequently, abundant dislocation walls are induced, leading to a strong hetero-deformation-induced strain hardening effect.
Interpreting Flux from Broadband Photometry
Creators: name: Brown, Peter J.
name: Breeveld, Alice
name: Roming, Peter W. A.
name: Siegel, Michael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We discuss the transformation of observed photometry into flux for the creation of spectral energy distributions and the computation of bolometric luminosities. We do this in the context of supernova studies, particularly as observed with the Swift spacecraft, but the concepts and techniques should be applicable to many other types of sources and wavelength regimes. Traditional methods of converting observed magnitudes to flux densities are not very accurate when applied to UV photometry. Common methods for extinction and the integration of pseudo-bolometric fluxes can also lead to inaccurate results. The sources of inaccuracy, though, also apply to other wavelengths. Because of the complicated nature of translating broad-band photometry into monochromatic flux densities, comparison between observed photometry and a spectroscopic model is best done by comparing in the natural units of the observations. We recommend that integrated flux measurements be made using a spectrum or spectral energy distribution which is consistent with the multi-band photometry rather than converting individual photometric measurements to flux densities, linearly interpolating between the points, and integrating. We also highlight some specific areas where the UV flux can be mischaracterized.
description: Accepted for publication in the Astronomical Journal. 16 pages, 9 figures. A PDF file with wide-screen friendly figures is linked from this blog post http://ultravioletsupernova.blogspot.com/2016/08/interpreting-flux-from-broadband.html
Tropical $ψ$ classes
Creators: name: Cavalieri, Renzo
name: Gross, Andreas
name: Markwig, Hannah
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 14T05, 14A20

description: We introduce a tropical geometric framework that allows us to define $ψ$ classes for moduli spaces of tropical curves of arbitrary genus. We prove correspondence theorems between algebraic and tropical $ψ$ classes for some one-dimensional families of genus-one tropical curves.
Stellar atmospheres, atmospheric extension and fundamental parameters: weighing stars using the stellar mass index
Creators: name: Neilson, Hilding R.
name: Baron, Fabien
name: Norris, Ryan
name: Kloppenborg, Brian
name: Lester, John B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: One of the great challenges in understanding stars is measuring their masses. The best methods for measuring stellar masses include binary interaction, asteroseismology and stellar evolution models, but these methods are not ideal for red giant and supergiant stars. In this work, we propose a novel method for inferring stellar masses of evolved red giant and supergiant stars using interferometric and spectrophotometric observations combined with spherical model stellar atmospheres to measure what we call the stellar mass index, defined as the ratio between the stellar radius and mass. The method is based on the correlation between different measurements of angular diameter, used as a proxy for atmospheric extension, and fundamental stellar parameters. For a given star, spectrophotometry measures the Rosseland angular diameter while interferometric observations generally probe a larger limb-darkened angular diameter. The ratio of these two angular diameters is proportional to the relative extension of the stellar atmosphere, which is strongly correlated to the star's effective temperature, radius and mass. We show that these correlations are strong and can lead to precise measurements of stellar masses.
description: 7 pages, 3 figures, accepted for publication in ApJ
The Socio-Economic Trajectories and the Performance of Women Entrepreneurshipin India
Creators: name: Islam, K M Baharul
name: Khan, Asif
name: Akhter, Shahid
name: Mitra, Archan
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 350704
subject: Entrepreneurship
classificationCode: 440705
subject: Gender, policy and administration
classificationCode: 460901
subject: Business process management

description: It is stated that no nation can advance without considering half its population, i.e. women. Women's empowerment is currently a focal point in emerging and underdeveloped nations. Although the government has created several financial assistance programmes for women, they must be publicised through various channels so that an increasing number of women are aware of them and take advantage of them. In addition, it appears difficult for women to navigate the formalities and procedures required to obtain financial aid from banks and other financial organisations. Therefore, the procedures must be simplified, particularly for women. Women who wish to be in business but lack the requisite knowledge, skills, and management to establish a business must be encouraged to participate in entrepreneurship development programmes, which must be pushed and carried out promptly. Typically, obtaining raw materials and a market for their firm presents difficulties for female entrepreneurs. The government should devise ways to ensure that these women have easy access to raw materials and aid them in selling their products and services. In this paper, we discussed how the Socio-economic trajectories influence the performance of women entrepreneurship in India. It is also deliberated as to how the female entrepreneurs have been playing an increasingly vital role in promoting the growth and development of India's economy, as well as directly providing employment and economic independence and enhancing their social, educational, and health standing. The work is descriptive and employs secondary sources.
Metal-rich or misclassified? The case of four RR Lyrae stars
Creators: name: Molnár, L.
name: Juhász, Á. L.
name: Plachy, E.
name: Szabó, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analysed the light curve of four, apparently extremely metal-rich fundamental-mode RR Lyrae stars. We identified two stars, MT Tel and ASAS J091803-3022.6 as RRc (first-overtone) pulsators that were misclassified as RRab ones in the ASAS survey. In the case of the other two stars, V397 Gem and ASAS J075127-4136.3, we could not decide conclusively, as they are outliers in the period-Fourier-coefficient space from the loci of both classes, but their photometric metallicities also favour the RRc classification.
description: 5 pages, 2 figures, published in IBVS: http://ibvs.konkoly.hu/cgi-bin/IBVS?6175
Survey on the Use of Typological Information in Natural Language Processing
Creators: name: O'Horan, Helen
name: Berzak, Yevgeni
name: Vulić, Ivan
name: Reichart, Roi
name: Korhonen, Anna
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: In recent years linguistic typology, which classifies the world's languages according to their functional and structural properties, has been widely used to support multilingual NLP. While the growing importance of typological information in supporting multilingual tasks has been recognised, no systematic survey of existing typological resources and their use in NLP has been published. This paper provides such a survey as well as discussion which we hope will both inform and inspire future work in the area.
D4.4 Report on all Workshops
Creators: name: Kragh, Gitte
name: Nielsen, Kristian Hvidtfelt
Publisher: name: Zenodo
Year: 2023
Subjects: Citizen Science
Trainings
Institutional changes

description: The current document, titled ’Reports on all Workshops’, has been developed within the framework of the TIME4CS project which is funded by the European Union’s Horizon 2020 Research and Innovation Programme under Grant Agreement No 101006201. The purpose of this Deliverable is to report on the training workshops developed and run under Task 4.2. This task stimulated organizational learning about Citizen Science (CS) skills and practices, their relations to Responsible Research and Innovation (RRI) and CS, and the importance of implementing the actions described in the roadmaps. In addition to the originally planned four Training Days at Implementer institutions, an additional workshop (Workshop 1: Train-the-Trainer) was requested by Implementers for the whole consortium, so all consortium partners could use the materials developed in Work Package (WP) 4 and run their own trainings based on the materials. The workshops and training days were as follows: Workshop 1: Train-the-Trainer workshop held during the TIME4CS General Assembly for all project partners, Brussels, 13 December 2022 Training day 1: Workshops held at KTU, 13 March 2023 Training day 2: Workshops held at Tyndall, 28 March 2023 Training day 3: Workshops held at CRG, 8 May 2023 Training day 4: Workshops held at UniSR, 19 May 2023
Impact of customer knowledge on product/service innovation : a case study of KPMG's Research Services Group
Creators: name: Blanchard, Bruno.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Quantum Repeaters Using Continuous Variable Teleportation
Creators: name: Dias, Josephine
name: Ralph, Timothy C
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum optical states are fragile and can become corrupted when passed through a lossy communication channel. Unlike for classical signals, optical amplifiers cannot be used to recover quantum signals. Quantum repeaters have been proposed as a way of reducing errors and hence increasing the range of quantum communications. Current protocols target specific discrete encodings, for example quantum bits encoded on the polarization of single photons. We introduce a more general approach that can reduce the effect of loss on any quantum optical encoding, including those based on continuous variables such as the field amplitudes. We show that in principle the protocol incurs a resource cost that scales polynomially with distance. We analyse the simplest implementation and find that whilst its range is limited it can still achieve useful improvements in the distance over which quantum entanglement of field amplitudes can be distributed.
description: 11 pages, 6 figures. arXiv admin note: substantial text overlap with arXiv:1505.03626
Genus 2 Cantor sets
Creators: name: Fletcher, Alastair N.
name: Stoertz, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 54C50 (Primary) 37F10, 37F50, 30C65 (Secondary)

description: We construct a geometrically self-similar Cantor set $X$ of genus $2$ in $\mathbb{R}^3$. This construction is the first for which the local genus is shown to be $2$ at every point of $X$. As an application, we construct, also for the first time, a uniformly quasiregular mapping $f:\mathbb{R}^3 \to \mathbb{R}^3$ for which the Julia set $J(f)$ is a genus $2$ Cantor set.
description: 20 pages, 6 figures
Four-wave mixing parametric oscillation and frequency comb generation at visible wavelengths in a silica microbubble resonator
Creators: name: Yang, Yong
name: Jiang, Xuefeng
name: Kasumie, Sho
name: Zhao, Guangming
name: Xu, Linhua
name: Ward, Jonathan
name: Yang, Lan
name: Chormaic, Síle Nic
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Frequency comb generation in microresonators at visible wavelengths has found applications in a variety of areas such as metrology, sensing, and imaging. To achieve Kerr combs based on four-wave mixing in a microresonator, dispersion must be in the anomalous regime. In this work, we demonstrate dispersion engineering in a microbubble resonator (MBR) fabricated by a two-CO$_2$ laser beam technique. By decreasing the wall thickness of the MBR down to 1.4 $μ$m, the zero dispersion wavelength shifts to values shorter than 764 nm, making phase matching possible around 765 nm. With the optical \textit{Q}-factor of the MBR modes being greater than $10^7$, four-wave mixing is observed at 765 nm for a pump power of 3 mW. By increasing the pump power, parametric oscillation is achieved, and a frequency comb with 14 comb lines is generated at visible wavelengths.
Intramode correlations enhanced phase sensitivities in an SU(1,1) interferometer
Creators: name: Gong, Qian-Kun
name: Li, Dong
name: Yuan, Chun-Hua
name: Ou, Z. Y.
name: Zhang, Weiping
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically derive the lower and upper bounds of quantum Fisher information (QFI) of an SU(1,1) interferometer whatever the input state chosen. According to the QFI, the crucial resource for quantum enhancement is shown to be large intramode correlations indicated by the Mandel $Q$-parameter. For a photon-subtracted squeezed vacuum state with high super-Poissonian statistics in one input port and a coherent state in the other input port, the quantum Cramér-Rao bound of the SU(1,1) interferometer can beat $1/\langle\hat{N}\rangle$ scaling in presence of large fluctuations in the number of photons, with a given fixed input mean number of photons. The definition of the Heisenberg limit (HL) should take into account the amount of fluctuations. The HL considering the number fluctuation effect may be the ultimate phase limit.
description: 9 pages, 5 figures. arXiv admin note: text overlap with arXiv:1608.00389
Evaluating the last missing ingredient for the three-loop quark static potential by differential equations
Creators: name: Lee, Roman N.
name: Smirnov, Vladimir A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analytically evaluate the three-loop Feynman integral which was the last missing ingredient for the analytical evaluation of the three-loop quark static potential. To evaluate the integral we introduce an auxiliary parameter $y$, which corresponds to the residual energy in some of the HQET propagators. We construct a differential system for 109 master integrals depending on $y$ and fix boundary conditions from the asymptotic behaviour in the limit $y\to \infty$. The original integral is recovered from the limit $y\to 0$. To solve these linear differential equations we try to find an $ε$-form of the differential system. Though this step appears to be, strictly speaking, not possible, we succeed to find an $ε$-form of all irreducible diagonal blocks, which is sufficient for solving the differential system in terms of an $ε$ expansion. We find a solution up to weight six in terms of multiple polylogarithms and obtain an analytical result for the required three-loop Feynman integral by taking the limit $y\to 0$. As a by-product, we obtain analytical results for some Feynman integrals typical for HQET.
description: 7 pages
A measurement of the understanding of the concept of knowledge management, and of its uptake levels in Australia
Creators: name: Zyngier, Suzanne Marjorie.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Homological Polynomial Coefficients and the Twist Number of Alternating Surface Links
Creators: name: Will, David A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: For $D$ a reduced alternating surface link diagram, we bound the twist number of $D$ in terms of the coefficients of a polynomial invariant. To this end, we introduce a generalization of the homological Kauffman bracket defined by Krushkal. Combined with work of Futer, Kalfagianni, and Purcell, this yields a bound for the hyperbolic volume of a class of alternating surface links in terms of these coefficients.
Repeaters for Continuous Variable Quantum Communication
Creators: name: Furrer, Fabian
name: Munro, William J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Optical telecommunication is at the heart of today's internet and is currently enabled by the transmission of intense optical signals between remote locations. As we look to the future of telecommunication, quantum mechanics promise new ways to be able to transmit and process that information. Demonstrations of quantum key distribution and quantum teleportation using multi-photon states have been performed, but only over ranges limited to one hundred kilometers. To go beyond this, we need repeaters that are compatible with these quantum multi-photon continuous variables pulses. Here we present a design for a continuous variable quantum repeaters that can distribute entangled and pure two-mode squeezed states over arbitrarily long distances with a success probability that scales only polynomially with distance. The proposed quantum repeater is composed from several basic known building blocks such as non-Gaussian operations for entanglement distillation and an iterative Gaussification protocol (for retaining the Gaussian character of the final state), but complemented with a heralded non-Gaussian entanglement swapping protocol, which allows us to avoid extensive iterations of quantum Gaussification. We characterize the performance of this scheme in terms of key rates for quantum key distribution and show a secure key can be generated over thousands of kilometers.
Investigations into the practicality of measuring benefits arising from improvements in the water quality of Kananook Creek, Frankston, Victoria, by the principles of cost benefits analysis
Creators: name: Kirk, B. D.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Nonlinear Quantum Optics in Optomechanical Nanoscale Waveguides
Creators: name: Zoubi, Hashem
name: Hammerer, Klemens
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We explore the possibility of achieving a significant nonlinear phase shift among photons propagating in nanoscale waveguides exploiting interactions among photons that are mediated by vibrational modes and induced through Stimulated Brillouin Scattering (SBS). We introduce a configuration that allows slowing down the photons by several orders of magnitude via SBS involving sound waves and two pump fields. We extract the conditions for maintaining vanishing amplitude gain or loss for slowly propagating photons while keeping the influence of thermal phonons to the minimum. The nonlinear phase among two counter-propagating photons can be used to realize a deterministic phase gate.
description: 11 pages, 6 figures
Solution for the nonlinear relativistic harmonic oscillator via Laplace-Adomian decomposition method
Creators: name: González-Gaxiola, O.
name: Santiago, J. A.
name: de Chávez, J. Ruiz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Far as we know there are not exact solutions to the equation of motion for a relativistic harmonic oscillator. In this paper, the relativistic harmonic oscillator equation which is a nonlinear ordinary differential equation is studied by means of a combined use of the Adomian Decomposition Method and the Laplace Transform (LADM). The results that we have obtained, a series of powers of functions, have never been reported and show a very good match when compared with other approximate solutions, obtained by different methods. The method here proposed works with high degree of accuracy and because it requires less computational effort, it is very convenient to solve this kind of nonlinear differential equations.
description: 16 pages, 8 figures
Pre-test prediction with the general linear regression model [ manuscript]
Creators: name: Chew, Mei Leng.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
General relativity and the growth of a sub-discipline "gravitation" in the German speaking physics community
Creators: name: Goenner, Hubert F. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: We will follow the growth of gravitational theory in Germany from 1915 to the 1990s, i.e., relativistic theories of gravitation, mainly Einstein's, as a branch of physics in the sense of social, more precisely institutional history. As criteria for a continued professionalizing of the field, we use the numbers of published research papers, reviews, monographs, courses at universities, appointments of lecturers or professors as well as the status of those involved (members of academies). The foundation of special institutes for gravitational research and of particular divisions of physical societies forms the final stage of this process of institutionalization. At present, an institutionalization of research in relativistic gravitation has been achieved in Germany through a thriving topical section "Relativity and Gravitation" of the German Physical Society and a Max-Planck-Institute for Gravitational Physics. While an institutionalization of the field became achieved, the situation for young German relativists for entering into research in the field was not noticeably improved. Much of research in general relativity still is done at universities in rather small groups, the continuity of which is not guaranteed.
Results from a triple chord stellar occultation and far-infrared photometry of the trans-Neptunian object (229762) 2007 UK126
Creators: name: Schindler, Karsten
name: Wolf, Jürgen
name: Bardecker, Jerry
name: Olsen, Aart
name: Müller, Thomas
name: Kiss, Csaba
name: Ortiz, Jose-Luis
name: Braga-Ribas, Felipe
name: de Camargo, Julio Ignacio Bueno
name: Herald, Dave
name: Krabbe, Alfred
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: A stellar occultation by a trans-Neptunian object (TNO) provides an opportunity to probe its size and shape. Very few occultations by TNOs have been sampled simultaneously from multiple locations, while a robust estimation of shadow size has been possible for only two objects. We present the first observation of an occultation by the TNO 2007 UK126 on 15 November 2014, measured by three observers, one nearly on and two almost symmetrical to the shadow's centerline. This is the first multi-chord dataset obtained for a so-called detached object, a TNO subgroup with perihelion distances so large that the giant planets have likely not perturbed their orbits. We revisit Herschel/PACS far-infrared data, applying a new reduction method to improve the accuracy of the measured fluxes. Combining both datasets allows us to comprehensively characterize 2007 UK126. We use error-in-variable regression to solve the non-linear problem of propagating timing errors into uncertainties of the ellipse parameters. Based on the shadow's size and a previously reported rotation period, we expect a shape of a Maclaurin spheroid and derive a geometrically plausible size range. To refine our size estimate of 2007 UK126, we model its thermal emission using a thermophysical model code. We conduct a parametric study to predict far-infrared fluxes and compare them to the Herschel/PACS measurements. The favorable geometry of our occultation chords, combined with minimal dead-time imaging, and precise GPS time measurements, allow for an accurate estimation of the shadow size (best-fitting ellipse with axes 645.80 $\pm$ 5.68 km $\times$ 597.81 $\pm$ 12.74 km) and the visual geometric albedo (15.0 $\pm$ 1.6 %). By combining our analyses of the occultation and the far-infrared data, we can constrain the effective diameter of 2007 UK126 to 599 - 629 km. We conclude that subsolar surface temperatures are $\approx$ 50 - 55 K.
description: 16 pages, 8 figures; accepted for publication in A&A
The error correction approach to the demand for money in Sri Lanka
Creators: name: Dheerasinghe, Rupa.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Potential for optimizing Higgs boson CP measurement in H to tau tau decay at LHC and ML techniques
Creators: name: Józefowicz, R.
name: Richter-Was, E.
name: Was, Z.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We investigate potential for measuring CP state of the Higgs boson in the H to tau tau$ decay with consecutive tau-lepton decays in channels: tau^+- to rho^+- nu_tau and tau^+- to a1^+- nu_tau combined. Subsequent decays rho^+- to pi^+- pi^0, a1^+- to rho^0 pi^+- and rho^0 to pi^+ pi^- are taken into account. We will explore extensions of the method, where acoplanarity angle for the planes build on the visible decay products, pi^+- pi^0 of tau^+- to pi^pm pi^0 nu_tau, was used. The angle is sensitive to transverse spin correlations, thus to parity. We show, that in the case of the cascade decays of tau to a1 nu, information on the CP state of Higgs can be extracted from the acoplanarity angles as well. Because in the cascade decay a1^+- to rho^0 pi^pm,rho^0 to pi^+ pi^- up to four planes can be defined, up to 16 distinct acoplanarity angles are available for H \to tau tau to a1^+ a1^- nu nu decays. These acoplanarities carry in part supplementary but also correlated information. It is thus cumbersome to evaluate an overall sensitivity. We investigate sensitivity potential of such analysis, by developing and implementing model in the Machine Learning (ML) techniques. We quantify possible improvements when multi-dimensional phase-space of outgoing decay products directions is used, instead of 1-dimensional projections i.e. the acoplanarity angles. We do not take into account ambiguities resulting from detector uncertainties or background contamination, we concentrate on usefulness of ML methods and tau to 3pi nu decays for Higgs boson parity measurement.
description: 1+14 pages,7 figures
Invertibility as a witness of Markovianity of the quantum dynamical maps
Creators: name: Jeknić-Dugić, Jasmina
name: Arsenijević, Momir
name: Dugić, Miroljub
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Markovianity of the quantum open system processes is a topic of the considerable current interest. Typically, invertibility is assumed to be non-essential for Markovianity of the open-quantum-system dynamical maps. Nevertheless, in this paper we distinguish a class of physically important dynamical maps (processes) for which invertibility is a necessary condition for Markovianity. Since every quantum-state tomography directly provides information on invertibility of the map, no optimization procedure is necessary for determining non-Markovianity regarding the considered class of dynamical processes. On this basis we are able to provide a systematic insight and to distinguish mutual relations of the various approaches to quantum Markovianity. Notably, for the processes out of the considered class of dynamical maps, various relations are allowed between divisibility, invertibility and Markovianity of the dynamical maps.
description: 20 pages, 1 figure, discussion extended, new references, Supplementary material added
An assessment of the Prices Justification Tribunal
Creators: name: Oldmeadow, Ian Jeffery.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
MPEC 2023-S10 : 2023 RD13
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RD13

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Deliverable D-PhD02-4.1 : Summary of the risk factors analysis (epidemiological and consumption data) - PhD LIN-RES
Creators: name: Timmermans
name: Boland
name: Driesen
name: Cargnel
name: , Simons
name: Dispas
name: Vanderhaeghen
name: Vermeersch
name: Adriaens
Publisher: name: Zenodo
Year: 2022
Subjects: OHEJP
LIN-RES
Linezolid
antimicrobial

description: Linezolid is a synthetic oxazolidinone antimicrobial with activity against gram-positive bacteria. It is a critically important antibiotic(1) used to treat patients with infections caused by methicillin-resistant Staphylococcus aureus and vancomycin-resistant enterococci. Even though linezolid is not licensed for food-producing animals, cross-selection through the use of other antibiotics (among others phenicols) could occur. Therefore, the emergence of linezolid resistance in animal enterococci and staphylococci is an increasing concern in view of the One Health perspective. This study explored putative risk factors for the occurrence of linezolid resistant bacteria (commensal enterococci and staphylococci) in faeces from veal calves, broilers, laying hens and pigs and in nasal swabs samples from pigs collected in 2019 in Belgium
Unexpected Essential Surfaces among Exteriors of Twisted Torus Knots
Creators: name: de Paiva, Thiago
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57k10, 57k35

description: The twisted torus knots K(p, q; r, s) are obtained by performing a sequence of s full twists on r adjacent strands of (p, q)-torus knots. Morimoto asked whether all twisted torus knots with essential tori in the exterior fit into one of two families. We prove that the answer to this question is no, by finding two different new families of toroidal twisted torus knots.
description: 15 pages, 11 figures. v3 contains minor revisions. To appear in Algebraic & Geometric Topology
Uppsala O. Nova 588, Qazwini or Hamadani, Ajaib
Creators: name: Qazwini Or Hamadani
Publisher: name: Zenodo
Year: 2022

description: Manuscript images from Uppsala collection. Low quality images. Author's name in catalogue may be error. Uppsala O. Nova 588. Author: Qazwini or Hamadani. Title: Ajaib
Excitonic properties of semiconducting monolayer and bilayer MoTe2
Creators: name: Robert, C.
name: Picard, R.
name: Lagarde, D.
name: Wang, G.
name: Echeverry, J. P.
name: Cadiz, F.
name: Renucci, P.
name: Högele, A.
name: Amand, T.
name: Marie, X.
name: Gerber, I. C.
name: Urbaszek, B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: MoTe2 belongs to the semiconducting transition metal dichalcogenide family with some properties differing from the other well-studied members (Mo,W)(S,Se)2. The optical band gap is in the near infrared region and both monolayers and bilayers may have a direct optical band gap. We first simulate the band structure of both monolayer and bilayer MoTe2 with DFT-GW calculations. We find a direct (indirect) electronic band gap for the monolayer (bilayer). By solving the Bethe-Salpeter equation, we calculate similar energies for the direct excitonic states in monolayer and bilayer. We then study the optical properties by means of photoluminescence (PL) excitation, time-resolved PL and power dependent PL spectroscopy. We identify the same energy for the B exciton state in monolayer and bilayer. Following circularly polarized excitation, we do not find any exciton polarization for a large range of excitation energies. At low temperature (T=10 K), we measure similar PL decay times of the order of 4 ps for both monolayer and bilayer excitons with a slightly longer one for the bilayer. Finally, we observe a reduction of the exciton-exciton annihilation contribution to the non-radiative recombination in bilayer.
Empire migration : a study of emigration to Canada, Australia and New Zealand, 1910-1929
Creators: name: Pope, David.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
The XMM Newton and INTEGRAL observations of the supergiant fast X-ray transient IGR J16328-4726
Creators: name: Fiocchi, M.
name: Bazzano, A.
name: Natalucci, L.
name: Ubertini, P.
name: Sguera, V.
name: Bird, A. J.
name: Boon, C. M.
name: Persi, P.
name: Piro, L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The accretion mechanism producing the short flares observed from the Supergiant Fast X-ray Transients (SFXT) is still highly debated and forms a major part in our attempts to place these X-ray binaries in the wider context of the High Mass X-ray Binaries. We report on a 216 ks INTEGRAL observation of the SFXT IGR J16328-4726 (August 24-27, 2014) simultaneous with two fixed-time observations with XMM Newton (33ks and 20ks) performed around the putative periastron passage, in order to investigate the accretion regime and the wind properties during this orbital phase. During these observations, the source has shown luminosity variations, from 4x10^{34} erg/s to 10^{36} erg/s, linked to spectral properties changes. The soft X-ray continuum is well modeled by a power law with a photon index varying from 1.2 up to 1.7 and with high values of the column density in the range 2-4x10^{23}/cm^2. We report on the presence of iron lines at 6.8-7.1 keV suggesting that the X-ray flux is produced by accretion of matter from the companion wind characterized by density and temperature inhomogeneities.
Instance-Dependent Bounds for Zeroth-order Lipschitz Optimization with Error Certificates
Creators: name: Bachoc, François
name: Cesari, Tommaso R
name: Gerchinovitz, Sébastien
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistics Theory (math.ST)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We study the problem of zeroth-order (black-box) optimization of a Lipschitz function $f$ defined on a compact subset $\mathcal X$ of $\mathbb R^d$, with the additional constraint that algorithms must certify the accuracy of their recommendations. We characterize the optimal number of evaluations of any Lipschitz function $f$ to find and certify an approximate maximizer of $f$ at accuracy $\varepsilon$. Under a weak assumption on $\mathcal X$, this optimal sample complexity is shown to be nearly proportional to the integral $\int_{\mathcal X} \mathrm{d}\boldsymbol x/( \max(f) - f(\boldsymbol x) + \varepsilon )^d$. This result, which was only (and partially) known in dimension $d=1$, solves an open problem dating back to 1991. In terms of techniques, our upper bound relies on a packing bound by Bouttier al. (2020) for the Piyavskii-Shubert algorithm that we link to the above integral. We also show that a certified version of the computationally tractable DOO algorithm matches these packing and integral bounds. Our instance-dependent lower bound differs from traditional worst-case lower bounds in the Lipschitz setting and relies on a local worst-case analysis that could likely prove useful for other learning tasks.
Interfacial interaction in monolayer transition metal dichalcogenides (MX2)/metal oxide heterostructures and its effects on electronic and optical properties: The case of MX2/CeO2
Creators: name: Yang, Ke
name: Huang, Wei-Qing
name: Hu, Wangyu
name: Huang, Gui-Fang
name: Wen, Shuangchun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two-dimensional transition metal dichalcogenides (MX2)/metal oxide heterostructures have shown unique physical properties, making them promising materials for various applications ranging from photocatalysis to solar energy conversion. Understanding the interfacial interactions is highly desirable for designing these heterostructures having excellent performance. Here we systematically study the interfacial interaction in monolayer MX2 (M=Mo, W; X=S, Se)/CeO2 heterostructures and its effects on electronic and optical properties by density functional theory. It is found that the interfacial interaction in the MX2/CeO2 depends predominantly on the chalcogen (X) element. Particularly, the band gap variation and important electronic states at conduction band minimum or valence band maximum of the heterostructures are determined by the strength of interfacial interaction. The MX2/CeO2 heterostructures with the same chalcogen (X) element have similar absorption spectra from ultraviolet to near-infrared regions. These results suggest that the chalcogen (X) element is a key factor in tuning the properties of MX2/metal oxide heterostructures.
description: 16 pages, 4 figures
On Quantum Microstates in the Near Extremal, Near Horizon Kerr Geometry
Creators: name: Guneratne, Ananda
name: Rodriguez, Leo
name: Wickramasekara, Sujeev
name: Yildirim, Tuna
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the thermodynamics of near horizon near extremal Kerr (NHNEK) geometry within the framework of $AdS_2/CFT_1$ correspondence. We start by shifting the horizon of near horizon extremal Kerr (NHEK) geometry by a general finite mass. While this shift does not alter the geometry in that the resulting classical solution is still diffeomorphic to the NHEK solution, it does lead to a quantum theory different from that of NHEK. We obtain this quantum theory by means of a Robinson-Wilczek two-dimensional Kaluza-Klein reduction which enables us to introduce a finite regulator on the $AdS_2$ boundary and compute the full asymptotic symmetry group of the two-dimensional quantum conformal field theory on the respective $AdS_2$ boundary. The s-wave contribution of the energy-momentum-tensor of this conformal field theory, together with the asymptotic symmetries, generate a Virasoro algebra with a calculable center, which agrees with the standard Kerr/$CFT$ result, and a non-vanishing lowest Virasoro eigenmode. The central charge and lowest eigenmode produce the Bekenstein-Hawking entropy and Hawking temperature for NHNEK.
description: Invited contribution to the proceedings of Quantum Fest 2015, which is dedicated to the memory of Sujeev Wickramasekara who passed away suddenly on December 28th 2015. Article based on arXiv:1206.2261