cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
De la carte climatique au chorotype climatique : propositions de modèles graphiques
Creators: name: Touati, Najla
name: Jégou, Laurent
Publisher: name: Zenodo
Year: 2023
Subjects: climate
chorematic
graphical modeling
map
urban planning
climate visualization

description: La place de la chorématique dans les représentations et l’analyse des données localisées sera discutée en se fondant sur un travail autour de la représentation du climat urbain. Comment articuler les différentes représentations pour analyser, informer, communiquer, intégrer les documents de planification urbaine ?
description: Dans le cadre de ses activité, l'AR9 propose une série de Webinaires mensuels sous la forme d'une "Carte blanche", un temps consacré à l'exploration et aux discussions sur les formes contemporaines de cartographies et de géovisualisations de données. L'objectif de ces temps d'échange est à la fois de permettre des présentations de travaux, de réalisations ou d'expérimentations cartographiques diversifiées et des échanges collectifs sur les leviers et les enjeux actuels de la représentation de données spatiales tant d'un point de vue conceptuel, opérationnel, méthodologique que technique. https://github.com/magisAR9/webinaires/blob/main/README.md
Universality of Schmidt decomposition and particle identity
Creators: name: Sciara, Stefania
name: Franco, Rosario Lo
name: Compagno, Giuseppe
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Schmidt decomposition is a widely employed tool of quantum theory which plays a key role for distinguishable particles in scenarios such as entanglement characterization, theory of measurement and state purification. Yet, it is held not to exist for identical particles, an open problem forbidding its application to analyze such many-body quantum systems. Here we prove, using a newly developed approach, that the Schmidt decomposition exists for identical particles and is thus universal. We find that it is affected by single-particle measurement localization and state overlap. We study paradigmatic two-particle systems where identical qubits and qutrits are located in the same place or in separated places. For the case of two qutrits in the same place, we show that their entanglement behavior, whose physical interpretation is given, differs from that obtained before by different methods. Our results are generalizable to multiparticle systems and open the way for further developments in quantum information theory when particle identity counts as a resource.
description: 8 pages, 4 figures
Hybrid policies for socially efficient renewable energy generation in Australia
Creators: name: Del Mundo, Israel 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 perturbed universe in the deformed algebra approach of Loop Quantum Cosmology
Creators: name: Grain, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Loop quantum cosmology is a tentative approach to model the universe down to the Planck era where quantum gravity settings are needed. The quantization of the universe as a dynamical space-time is inspired by Loop Quantum Gravity ideas. In addition, loop quantum cosmology could bridge contact with astronomical observations, and thus potentially investigate quantum cosmology modellings in the light of observations. To do so however, modelling both the background evolution and its perturbations is needed. The latter describe cosmic inhomogeneities that are the main cosmological observables. In this context, we present the so-called deformed algebra approach implementing the quantum corrections to the perturbed universe at an effective level by taking great care of gauge issues. We particularly highlight that in this framework, the algebra of hypersurface deformation receives quantum corrections, and we discuss their meaning. The primordial power spectra of scalar and tensor inhomogeneities are then presented, assuming initial conditions are set in the contracting phase preceding the quantum bounce and the well-known expanding phase of the cosmic history. These spectra are subsequently propagated to angular power spectra of the anisotropies of the cosmic microwave background. It is then shown that regardless of the choice for the initial conditions inside the effective approach for the background evolution (except that they are set in the contracting phase), the predicted angular power spectra of the polarized B-modes exceed the upper bound currently set by observations. The exclusion of this specific version of loop quantum cosmology establishes the falsifiability of the approach, though one shall not conclude here that either loop quantum cosmology or loop quantum gravity is excluded.
description: Invited paper for a special issue of IJMPD on Loop Quantum Cosmology
Temperature dependence of the spin Hall angle and switching current in the nc-W(O)/CoFeB/MgO system with perpendicular magnetic anisotropy
Creators: name: Neumann, Lukas
name: Meier, Daniel
name: Schmalhorst, Jan
name: Rott, Karsten
name: Reiss, Günter
name: Meinert, Markus
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigated the temperature dependence of the switching current for a perpendicularly magnetized CoFeB film deposited on a nanocrystalline tungsten film with large oxygen content: nc-W(O). The spin Hall angle $|Θ_\mathrm{SH}| \approx 0.22$ is independent of temperature, whereas the switching current increases strongly at low temperature. We show that the nc-W(O) is insensitive to annealing. It thus can be a good choice for the integration of spin Hall driven writing of information in magnetic memory or logic devices that require a high-temperature annealing process during fabrication.
description: 4 pages, 4 figures
On the algebraic area of lattice walks and the Hofstadter model
Creators: name: Ouvry, Stephane
name: Wagner, Stephan
name: Wu, Shuang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the generating function of the algebraic area of lattice walks, evaluated at a root of unity, and its relation to the Hofstadter model. In particular, we obtain an expression for the generating function of the n-th moments of the Hofstadter Hamiltonian in terms of a complete elliptic integral, evaluated at a rational function. This in turn gives us both exact and asymptotic formulas for these moments.
description: 17 pages, 2 figures
Thermal spin dynamics of yttrium iron garnet
Creators: name: Barker, Joseph
name: Bauer, Gerrit E. W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Yttrium Iron Garnet is the prototypical material used to study pure spin currents. It is a complex material with 20 magnetic atoms in the unit cell. Almost all theories and experimental analysis approximates this complicated material to a simple ferromagnet with a single spin wave mode. We use the method of atomistic spin dynamics to study the temperature evolution of the full 20 mode exchange spin wave spectrum. Our results show a strong frequency dependence of the modes in quantitative agreement with neutron scattering experiments. We find this causes in a reduction in the net spin pumping due to the thermal occupation of optical modes with the opposite chirality to the FMR mode.
From Kinetic Theory of Multicellular Systems to Hyperbolic Tissue Equations: Asymptotic Limits and Computing
Creators: name: Outada, Nisrine
name: Vauchelet, Nicolas
name: Akrid, Thami
name: Khaladi, Mohamed
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This paper deals with the analysis of the asymptotic limit toward the derivation of macroscopic equations for a class of equations modeling complex multicellular systems by methods of the kinetic theory. After having chosen an appropriate scaling of time and space, a Chapman-Enskog expansion is combined with a closed, by minimization, technique to derive hyperbolic models at the macroscopic level. The resulting macroscopic equations show how the macroscopic tissue behavior can be described by hyperbolic systems which seem the most natural in this context. We propose also an asymptotic-preserving well-balanced scheme for the one-dimensional hyperbolic model, in the two dimensional case, we consider a time splitting method between the conservative part and the source term where the conservative equation is approximated by the Lax-Friedrichs scheme.
title: Mutagenese des endogenen TP53-Lokus durch CRISPR/Cas9-vermittelte homologe Rekombination & Base Editing in Lungenkarzinomzellen
title: Mutagenesis of the endogenous TP53-locus via CRISPR/Cas9-mediated homology-directed repair & Base Editing in lung cancer cells
titleType: AlternativeTitle
Creators: name: Drangenstein, Daniel
Publisher: name: Philipps-Universität Marburg
Year: 2023
Subjects: Base Editing
lung cancer
Medical sciences Medicine
Medizin
homology-directed repair
CRISPR/Cas9
Lungenkrebs
TP53
homologe Rekombination

description: Das Bronchialkarzinom ist eine der häufigsten Tumorarten und der führende Grund Krebs-assoziierter Sterbefälle weltweit. In bis zu 70 % aller Bronchialkarzinome liegt das Tumorsuppressorgen TP53 mutiert vor. Ein besseres Verständnis des Genprodukts p53 und dessen Mutanten ist somit ein essenzieller Schritt zur Verbesserung der Prognose von Patienten und dadurch Teil intensiver Forschung. Dafür wurde im Rahmen dieser Arbeit über mehrere Schritte ein Zellklon der Bronchialkarzinom-Zelllinie NCI-H460 (H460) generiert, an dem zukünftig eine effiziente Mutagenese des endogenen TP53-Lokus durch CRISPR/Cas9 und homologe Rekombination (homology directed repair, HDR) durchgeführt werden kann. Zunächst wurde mit dieser Methodik eine zusätzliche Sequenz, eine sogenannte LSL (LoxP-Stop-LoxP) - Kassette, in ein TP53-Allel eingebaut. Die anderen beiden TP53-Allele wurden ausgeschaltet, sodass eine monoallelische TP53-Expression erreicht wurde. Das Allel mit der LSL-Kassette konnte anschließend effizient editiert werden und das Verhalten einzelner TP53-Mutanten sowie eine saturierte Mutagenese des hotspot-Codons R175 wurden observiert. Hierfür wurde die zelluläre Fitness der Mutanten unter Behandlung mit dem Mdm2-Inhibitor Nutlin-3a, der physiologisch die p53-Antwort aktiviert, observiert. Mithilfe dieses Zellklons kann so in zukünftigen Experimenten erstmals das Verhalten jeder einzelnen klinisch auftretenden Mutation von p53 auf physiologischem Expressionslevel und innerhalb einer physiologischen Genstruktur analysiert werden. Durch diese vollständige Charakterisierung können schlussendlich Therapieschemata optimiert werden, um jedem Patienten unter Berücksichtigung der individuell auftretenden TP53-Mutation eine geeignete Therapie zu ermöglichen. Des Weiteren wurde eine Mutagenese von TP53 durch die Verwendung eines Base Editors durchgeführt. Dieser besteht aus einer Cas9-Nickase, die mit einer APOBEC3A-Desaminase verknüpft ist. Damit konnten gezielt und mit einer Effizienz von über 90 % Cytosin-zu-Thymin Transitionen erreicht werden. In dieser Arbeit wurde zunächst das hotspot-Codon R273 von TP53 in H460- und HCT116-Zellen, einer Kolonkarzinom-Zelllinie, erfolgreich editiert. Zusätzlich wurde in HCT116-Zellen eine Mutagenese von Exon 8 von TP53 durchgeführt, bei der jede verfügbare PAM-Sequenz in diesem Bereich durch eine entsprechende sgRNA als Ziel erfasst wurde. Insgesamt konnte mit dem Base Editor eine gezielte Genomeditierung mit hoher Effizienz beobachtet werden.
Unemployment insurance, consumption smoothing and institutional arrangements
Creators: name: Lake, James Wesley.
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.
Suicides during the Swedish midsummer holiday: analysis of cause of death data 1980–2018
Creators: name: Hökby, Sebastian
name: Westerlund, Joakim
name: Blazevska, Bianca
name: Hadlaczky, Gergö
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Previous studies have demonstrated increased suicide rates on holidays such as New Year, nationally and internationally. Comparable to New Year’s Eve, Swedish Midsummer is a major holiday, linked to high levels of alcohol consumption in the population. We, therefore, hypothesized that suicides and deaths with undetermined intent would increase during the Midsummer celebration. We used a retrospective death registry design to investigate all suicides that occurred on Midsummer’s Eve (ME), Midsummer’s Day (MD) and 28 adjacent days (AD) during 1980–2018. Data were stratified by diagnosis type, sex and age, and was analyzed with paired t-tests, Poisson regression, and time-series charts with 95% confidence intervals. During the 30-day investigation period, the observed average was 4.3 deaths per day (23.3% cases with undetermined intent). ME, but not MD, was associated with significantly fewer suicides compared to AD (−1.08 deaths, p < .01). ME, but not MD, was simultaneously associated with more deaths with undetermined intent (+0.58 deaths, p = .007). No moderating sex or age effects were found. Descriptive statistics showed that poisonings, drownings and traffic-related injuries were common among the undetermined ME cases. The study found that suicide decreases and deaths with undetermined intent increases on ME. The findings are interpreted considering that substance use may affect both suicidal intentions and diagnosis classifications. Social and cultural support and holiday anticipations might also account for suicidal behaviors on ME.
Erupting filaments with large enclosing flux tubes as sources of high-mass 3-part CMEs, and erupting filaments in the absence of enclosing flux tubes as sources of low-mass unstructured CMEs
Creators: name: Hutton, Joe
name: Morgan, Huw
Publisher: name: arXiv
Year: 2016
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The 3-part appearance of many CMEs arising from erupting filaments emerges from a large magnetic flux tube structure, consistent with the form of the erupting filament system. Other CMEs arising from erupting filaments lack a clear 3-part structure and reasons for this have not been researched in detail. This paper aims to further establish the link between CME structure and the structure of the erupting filament system and to investigate whether CMEs which lack a 3-part structure have different eruption characteristics. A survey is made of 221 near-limb filament eruptions observed from 2013/05/03-2014/06/30 by EUV imagers and coronagraphs. 92 filament eruptions are associated with 3-part structured CMEs, 41 eruptions are associated with unstructured CMEs. The remaining 88 are categorized as failed eruptions. For 34% of the 3-part CMEs, processing applied to EUV images reveals the erupting front edge is a pre-existing loop structure surrounding the filament, which subsequently erupts with the filament to form the leading bright front edge of the CME. This connection is confirmed by a flux-rope density model. Furthermore, the unstructured CMEs have a narrower distribution of mass compared to structured CMEs, with total mass comparable to the mass of 3-part CME cores. This study supports the interpretation of 3-part CME leading fronts as the outer boundaries of a large pre-existing flux tube. Unstructured (non 3-part) CMEs are a different family to structured CMEs, arising from the eruption of filaments which are compact flux tubes in the absence of a large system of enclosing closed field.
A new measure of excessive parental worries about children’s health: Development of the Health Anxiety by Proxy Scale (HAPYS)
Creators: name: Ingeman, Katrine
name: Frostholm, Lisbeth
name: Frydendal, Ditte Hoffmann
name: Wright, Kristi D.
name: Lockhart, Elaine
name: Garralda, M. Elena
name: Kangas, Maria
name: Rask, Charlotte Ulrikka
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Health anxiety by proxy is a newly introduced term to describe parents’ experience of excessive and unpleasant worries about their child’s health. This article describes the development of a new measure, the Health Anxiety by Proxy Scale (HAPYS), for systematic assessment of health anxiety by proxy. The development of the HAPYS was performed over three phases. (1) Patients clinically assessed to have health anxiety by proxy participated in semi-structured interviews to elaborate their experience of worries regarding their child's health and their related behaviours, and to examine the face validity of items in an existing questionnaire: ‘Illness Worry Scale – parent version’. (2) Based on the findings from Phase 1 the project group and a panel of experts selected and formulated questionnaire items and scoring formats. (3) The HAPYS was pilot-tested twice using cognitive interviewing with healthy parents and parents with health anxiety by proxy followed by further adjustments. The final version of HAPYS consists of 26 items characteristic of health anxiety by proxy and of an impact section with six items. Based on the pilot testing the HAPYS showed good face and content validity. It holds the potential to be a valid questionnaire to help clinicians across health care settings assess parents suffering from health anxiety by proxy.
Learning an unknown transformation via a genetic approach
Creators: name: Spagnolo, Nicolò
name: Maiorino, Enrico
name: Vitelli, Chiara
name: Bentivegna, Marco
name: Crespi, Andrea
name: Ramponi, Roberta
name: Mataloni, Paolo
name: Osellame, Roberto
name: Sciarrino, Fabio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent developments in integrated photonics technology are opening the way to the fabrication of complex linear optical interferometers. The application of this platform is ubiquitous in quantum information science, from quantum simulation to quantum metrology, including the quest for quantum supremacy via the boson sampling problem. Within these contexts, the capability to learn efficiently the unitary operation of the implemented interferometers becomes a crucial requirement. In this letter we develop a reconstruction algorithm based on a genetic approach, which can be adopted as a tool to characterize an unknown linear optical network. We report an experimental test of the described method by performing the reconstruction of a 7-mode interferometer implemented via the femtosecond laser writing technique. Further applications of genetic approaches can be found in other contexts, such as quantum metrology or learning unknown general Hamiltonian evolutions.
description: 5 pages, 3 figures + 3 pages, 1 figure Supplementary Information
Critical noise of majority-vote model on complex networks
Creators: name: Chen, Hanshuang
name: Shen, Chuansheng
name: He, Gang
name: Zhang, Haifeng
name: Hou, Zhonghuai
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The majority-vote model with noise is one of the simplest nonequilibrium statistical model that has been extensively studied in the context of complex networks. However, the relationship between the critical noise where the order-disorder phase transition takes place and the topology of the underlying networks is still lacking. In the paper, we use the heterogeneous mean-field theory to derive the rate equation for governing the model's dynamics that can analytically determine the critical noise $f_c$ in the limit of infinite network size $N\rightarrow \infty$. The result shows that $f_c$ depends on the ratio of ${\left\langle k \right\rangle }$ to ${\left\langle k^{3/2} \right\rangle }$, where ${\left\langle k \right\rangle }$ and ${\left\langle k^{3/2} \right\rangle }$ are the average degree and the $3/2$ order moment of degree distribution, respectively. Furthermore, we consider the finite size effect where the stochastic fluctuation should be involved. To the end, we derive the Langevin equation and obtain the potential of the corresponding Fokker-Planck equation. This allows us to calculate the effective critical noise $f_c(N)$ at which the susceptibility is maximal in finite size networks. We find that the $f_c-f_c(N)$ decays with $N$ in a power-law way and vanishes for $N\rightarrow \infty$. All the theoretical results are confirmed by performing the extensive Monte Carlo simulations in random $k$-regular networks, Erdös-Rényi random networks and scale-free networks.
description: PRE 91, 022816 (2015)
Crimp: An efficient tool for summarizing multiple clusterings in population structure analysis and beyond
Creators: name: Lautenschlager, Ulrich
Publisher: name: Universität Regensburg
Year: 2022
Subjects: subject: cluster correspondence, cluster matching, cluster relabelling, label switching, population structure
subject: 580 Pflanzen (Botanik)

description: When a data set is repeatedly clustered using unsupervised techniques, the resulting clusterings, even if highly similar, may list their clusters in different orders. This so-called ‘label-switching’ phenomenon obscures meaningful differences between clusterings, complicating their comparison and summary. The problem often arises in the context of population structure analysis based on multilocus genotype data. In this field, a variety of popular tools apply model-based clustering, assigning individuals to a prespecified number of ancestral populations. Since such methods often involve stochastic components, it is a common practice to perform multiple replicate analyses based on the same input data and parameter settings. Available postprocessing tools allow to mitigate label switching, but leave room for improvements, in particular, regarding large input data sets. In this work, I present Crimp, a lightweight command-line tool, which offers a relatively fast and scalable heuristic to align clusters across replicate clusterings consisting of the same number of clusters. For small problem sizes, an exact algorithm can be used as an alternative. Additional features include row-specific weights, input and output files similar to those of CLUMPP (Jakobsson & Rosenberg, 2007) and the evaluation of a given solution in terms of CLUMPP as well as its own objective functions. Benchmark analyses show that Crimp, especially when applied to larger data sets, tends to outperform alternative tools considering runtime requirements and various quality measures. While primarily targeting population structure analysis, Crimp can be used as a generic tool to correct multiple clusterings for label switching. This facilitates their comparison and allows to generate an averaged clustering. Crimp's computational efficiency makes it even applicable to relatively large data sets while offering competitive solution quality.
High throughput thermal conductivity of high temperature solid phases: The case of oxide and fluoride perovskites
Creators: name: van Roekeghem, Ambroise
name: Carrete, Jesús
name: Oses, Corey
name: Curtarolo, Stefano
name: Mingo, Natalio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Using finite-temperature phonon calculations and machine-learning methods, we calculate the mechanical stability of about 400 semiconducting oxides and fluorides with cubic perovskite structures at 0 K, 300 K and 1000 K. We find 92 mechanically stable compounds at high temperatures -- including 36 not mentioned in the literature so far -- for which we calculate the thermal conductivity. We demonstrate that the thermal conductivity is generally smaller in fluorides than in oxides, largely due to a lower ionic charge, and describe simple structural descriptors that are correlated with its magnitude. Furthermore, we show that the thermal conductivities of most cubic perovskites decrease more slowly than the usual $T^{-1}$ behavior. Within this set, we also screen for materials exhibiting negative thermal expansion. Finally, we describe a strategy to accelerate the discovery of mechanically stable compounds at high temperatures.
description: 9 pages, 6 figures
A qualitative analysis of profound wildlife encounters
Creators: name: Smith, Liam .
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.
Determination of Nicotinic Acid in Food and Pharmaceuticals by a Simple and Rapid Fluorescence Polarization Immunoassay (FPIA)
Creators: name: Qiu, Peng
name: Song, Zhaorui
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Ecology
classificationCode: 111714
subject: Mental Health

description: A simple and rapid fluorescence polarization immunoassay (FPIA) based on polyclonal antibodies is reported for the first time for the determination of nicotinic acid. First, six nicotinic acid analogues were coupled with fluorescein isothiocyanate isomer I (FITC) to obtain tracers. The influences of tracer structure on the performance of FPIA as well as the structure-activity relationships were explored. Subsequently, the tracer concentration and antibody dilution ratio on the performance of FPIA were investigated. For the optimal conditions, the detection range of FPIA was from 1.1 to 145.6 μg mL−1 and its IC20 value as the limit of detection (LOD) was 1.1 μg mL−1. The cross-reactivity of antibodies with common vitamins was evaluated. The intra-assay recovery was from 92.0% to 101.2% in food and tablets, with inter-assay recoveries between 92.0% and 103.8%. The developed FPIA provided good sensitivity and reproducibility and therefore provided efficient and economic screening for nicotinic acid in food and tablets.
Observer's observables. Residual diffeomorphisms
Creators: name: Duch, Paweł
name: Lewandowski, Jerzy
name: Świeżewski, Jedrzej
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the fate of diffeomorphisms when the radial gauge is imposed in canonical general relativity. As shown elsewhere, the radial gauge is closely related to the observer's observables. These observables are invariant under a large subgroup of diffeomorphisms which results in their usefulness for canonical general relativity. There are, however, some diffeomorphisms, called residual diffeomorphisms, which might be "observed" by the observer as they do not preserve her observables. The present paper is devoted to the analysis of these diffeomorphisms in the case of the spatial and spacetime radial gauges. Although the residual diffeomorphisms do not form a subgroup of all diffeomorphisms, we show that their induced action in the phase space does form a group. We find the generators of the induced transformations and compute the structure functions of the algebras they form. The obtained algebras are deformations of the algebra of the Euclidean group and the algebra of the Poincaré group in the spatial and spacetime case, respectively. In both cases the deformation depends only on the Riemann curvature tensor and in particular vanishes when the space or spacetime is flat.
description: 23 pages
Use of an Uncertainty Profile to Validate High-Performance Liquid Chromatography (HPLC) for the Simultaneous Determination of Statins in Synthetic Pharmaceutical Products
Creators: name: Belmir, Hamza
name: Bouchafra, Houda
name: Abbouriche, Abdelmajid
name: Saffaj, Taoufiq
name: Lhaj, Rajae Ait
name: karbane, Miloud El
name: Ihssane, Bouchaib
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Pharmacology
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
classificationCode: 80699
subject: Information Systems not elsewhere classified
classificationCode: 19999
subject: Mathematical Sciences not elsewhere classified
subject: Cancer

description: Here is reported a full validation of a high-performance liquid chromatography (HPLC) method for the determination of statins in a pharmaceutical product using the uncertainty profile. In addition, the uncertainty estimates based on the β-content, γ-confidence tolerance intervals are compared to those using the β-expectation tolerance interval via a graphical comparison. The results are useful in elucidating the applicability and flexibility of the uncertainty profile, which allows the analyst to choose the desired proportion of the results with a well-determined uncertainty. This approach allowed the determination of the validity of the statin assays. Four of the five statin dosages were shown to be accurate by demonstrating that more than 90% of the outcomes were compliant; however, rosuvastatin’s dosage was valid only by ensuring an 80% compliance rate. The uncertainty profile is a widely applicable strategy that may be used to evaluate analytical methods and compute the uncertainty in order to confirm suitability for use while providing reliable results.
Green Synthesis and Encapsulation of Superparamagnetic Magnetite for Mercury (II) Removal: Adsorption Isotherms, Adsorption Kinetics, and Thermodynamic Studies
Creators: name: Kavlo, Hevidar Alp
name: Ince, Muharrem
name: Ince, Olcay Kaplan
name: Aydogdu, Burcu
name: Ozcan, Cemile
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
classificationCode: 29999
subject: Physical Sciences not elsewhere classified
subject: Physiology
subject: FOS: Biological sciences
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Ecology
classificationCode: 69999
subject: Biological Sciences not elsewhere classified

description: Mercury (II) ions have significant ecological impacts. In the current study, magnetized iron oxide (Fe3O4) nanoparticles were green synthesized and encapsulated with alginate (ALG). The nanoparticles were converted into a composite (Fe3O4/ALG). The Fe3O4/ALG beads were used to remove Hg (II) from industrial wastewater. Characterization was performed by X-ray diffraction (XRD), scanning electron microscopy—energy dispersive spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis-differential thermal analysis (TGA-DTA). A central composite design (CCD) approach was performed to define the experimental conditions providing the highest global adsorption efficiency and to optimize the pH, temperature and adsorbent mass. Hg (II) concentrations were determined by flame and electrothermal atomic absorption spectrometry (FAAS and ETAAS). The limits of detection (LOD) and quantification (LOQ) were 1.2 mg L−1 and 3.5 mg L−1 for FAAS and 0.2 µg L−1 and 0.5 µg L−1 for ETAAS, respectively. Additionally, Langmuir, Freundlich, and Temkin isotherm models were employed to determine the adsorption mechanism. The adsorption capacity of Fe3O4/ALG was determined to be 49.18 mg g−1 by the Langmuir model. Kinetic studies revealed that the adsorption of Hg (II) best fitted the pseudo-second order model. The Gibb’s free energy (ΔG°) values showed that the adsorption of Hg (II) on Fe3O4/ALG occurred spontaneously.
Critical issues in developing and managing an information system in the Directorate of Technical and Vocational Education (DTVE) in the Republic of Indonesia
Creators: name: Turijin.
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.
Machine-learning Selection of Optical Transients in Subaru/Hyper Suprime-Cam Survey
Creators: name: Morii, Mikio
name: Ikeda, Shiro
name: Tominaga, Nozomu
name: Tanaka, Masaomi
name: Morokuma, Tomoki
name: Ishiguro, Katsuhiko
name: Yamato, Junji
name: Ueda, Naonori
name: Suzuki, Naotaka
name: Yasuda, Naoki
name: Yoshida, Naoki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present an application of machine-learning (ML) techniques to source selection in the optical transient survey data with Hyper Suprime-Cam (HSC) on the Subaru telescope. Our goal is to select real transient events accurately and in a timely manner out of a large number of false candidates, obtained with the standard difference-imaging method. We have developed the transient selector which is based on majority voting of three ML machines of AUC Boosting, Random Forest, and Deep Neural Network. We applied it to our observing runs of Subaru-HSC in 2015 May and August, and proved it to be efficient in selecting optical transients. The false positive rate was 1.0% at the true positive rate of 90% in the magnitude range of 22.0--25.0 mag for the former data. For the latter run, we successfully detected and reported ten candidates of supernovae within the same day as the observation. From these runs, we learned the following lessons: (1) the training using artificial objects is effective in filtering out false candidates, especially for faint objects, and (2) combination of ML by majority voting is advantageous.
description: 9 pages, 6 figures. Accepted for publication in PASJ
Fermi-edge singularity and related interaction induced phenomena in multilevel quantum dots
Creators: name: Goremykina, A. S.
name: Sukhorukov, E. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the manifestation of the non-perturbative effects of interaction in sequential tunnelling between a quasi-one dimensional system of chiral quantum Hall edge channels and a multilevel quantum dot (QD). We use the formal scattering theory approach to the bosonization technique to present an alternative derivation of the Fermi-edge singularity (FES) effect and demonstrate the origin of its universality. This approach allows us to address, within the same framework, plasmon assisted sequential tunnelling to relatively large dots and investigate the interaction induced level broadening. The results are generalised by taking into account the dispersion in the spectrum of plasmons in the QD. We then discuss their modification in the presence of neutral modes, which can be realised either in a QD with two chiral strongly interacting edge channels or in a three dimensional QD in the Coulomb blockade regime. In the former case a universal behaviour of the tunnelling rate is discovered.
description: 10 pages, 5 figures
Performance and Complexity Analysis of a Reduced Iterations LLL Algorithm
Creators: name: Ouni, Nizar
name: Bouallegue, Ridha
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences

description: Multiple-input multiple-output (MIMO) systems are playing an increasing and interesting role in the recent wireless communication. The complexity and the performance of the systems are driving the different studies and researches. Lattices Reduction techniques bring more resources to investigate the complexity and performances of such systems. In this paper, we look to modify a fixed complexity verity of the LLL algorithm to reduce the computation operations by reducing the number of iterations without important performance degradation. Our proposal shows that we can achieve a good performance results while avoiding extra iteration that does not bring much performance.
description: arXiv admin note: text overlap with arXiv:1607.03260
Controlling quality control expenditures : an empirical study of Australian manufacturing firms
Creators: name: Shah, Kamleshkumar R.
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.
Layer-by-Layer Assembly of Two-Dimensional Monolayer Films of Gold Nanoparticles for Electrochemical Determination of Melamine
Creators: name: Liu, Yijing
name: Xu, Lan
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Biotechnology
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
classificationCode: 69999
subject: Biological Sciences not elsewhere classified

description: L-Cysteine (L-Cys) and two-dimensional monolayer films of gold nanoparticles (2D MFGS) were employed to modify gold electrodes to build uniform and stable multilayer films by layer-by-layer (LbL) self-assembly, denoted by Au/(L-Cys/2D MFGS)n (n = number of layers). Electrochemical measurements showed that the specific surface area and current amplification capacity of the modified electrode increased with the value of n. In addition, considering the orderliness inside the multilayer 2D MFGS assembly and experimental accessibility, Au/(L-Cys/2D MFGS)n=4 was selected to be the working electrode and dopamine (DA) as the signal quantification molecule for the indirect detection of melamine (MA). The results showed that the oxidation current of DA was inhibited due to the competitive adsorption of melamine upon the working electrode. Under the optimal conditions, the decrease of the dopamine peak anode current is proportional to the melamine concentration from 10−12 to 10−3 M with a detection limit of 0.13 pM. The results demonstrate the potential of 2D MFGS for applications in food and biological analysis. The scheme for fabricating the multilayer electrodes is convenient and environment-friendly, without expensive instrumentation or complex modifications.
Dogmatic Domesticity: Two Women's Quest for Scientific Objectivity in an Age of Darwinistic Patriarchy
Creators: name: Sullivan, Jessica
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: Gender Equality
subject: History of Science and Medicine
subject: History of Women's Authorship
subject: Scientific Objectivity

description: Influenced by Protestant Christian culture prominent within the nineteenth century, this thesis focuses on two women: Antoinette Brown Blackwell and Mary Putnam Jacobi, who, working in complementary but separate ways, created a communal sphere of female authorship that mainly focused on the promotion of healthier medical practices for women. This community acted as an encouraging network and a catalyst to advocate for the bettering and increasing demand for professional opportunities for women. Brown Blackwell and Putnam Jacobi created this community through the influence of the political and social beliefs of the time, and their goal was to strive toward their own definitions of objectivity to combat the preconceived notions and misconceptions of the gender binary.
Cuestionario dirigido al personal de la Red de Bibliotecas Públicas de Galicia en relación con la lectura digital y los servicios de préstamo electrónico = Questionnaire addressed to the staff of the Galician Public Library Network on digital reading and e-lending services
Creators: name: Sánchez-Muñoz, Elena
Publisher: name: Zenodo
Year: 2023
Subjects: Cuestionario
Libros electrónicos
Profesionales de la información
Lectura
Bibliotecas públicas
Bibliotecas digitales
Questionnaire
Electronic books
Information professionals
Reading
Public libraries
Digital libraries

description: Cuestionario dirigido al personal de la Red de Bibliotecas Públicas de Galicia sobre sus hábitos, actitudes y conocimientos en relación con la lectura digital y los servicios de préstamo electrónico. El formulario permaneció abierto desde el 7/02/2022 hasta el 22/02/2022 y se remitió a las 322 bibliotecas de la Red que figuraban como activas en el directorio de esta comunidad el 15/01/2022. Questionnaire addressed to the staff of the Galician Public Library Network about their habits, attitudes and knowledge in relation to digital reading and e-lending services. The form was designed with Qualtrics and remained open from 7/02/2022 until 22/02/2022 and was sent to the 322 libraries of the Network that were listed as active in the directory of this region on 15/01/2022. .
Invariants for time-dependent Hamiltonian systems
Creators: name: Struckmeier, Jürgen
name: Riedel, Claus
Publisher: name: arXiv
Year: 2023
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: An exact invariant is derived for $n$-degree-of-freedom Hamiltonian systems with general time-dependent potentials. The invariant is worked out in two equivalent ways. In the first approach, we define a special {\it Ansatz\/} for the invariant and determine its time-dependent coefficients. In the second approach, we perform a two-step canonical transformation of the initially time-dependent Hamiltonian to a time-independent one. The invariant is found to contain a function of time $f_{2}(t)$, defined as a solution of a linear third-order differential equation whose coefficients depend in general on the explicitly known configuration space trajectory that follows from the system's time evolution. It is shown that the invariant can be interpreted as the time integral of an energy balance equation. Our result is applied to a one-dimensional, time-dependent, damped non-linear oscillator, and to a three-dimensional system of Coulomb-interacting particles that are confined in a time-dependent quadratic external potential. We finally show that our results can be used to assess the accuracy of numerical simulations of time-dependent Hamiltonian systems.
description: 9 pages, 6 figures
Questionnaire addressed to the staff of the Galician Public Library Network on digital reading and e-lending services = Cuestionario dirigido al personal de la Red de Bibliotecas Públicas de Galicia en relación con la lectura digital y los servicios de préstamo electrónico
Creators: name: Sánchez-Muñoz, Elena
Publisher: name: Zenodo
Year: 2023
Subjects: Questionnaire
Electronic books
Information professionals
Reading
Public libraries
Digital libraries
Cuestionario
Libros electrónicos
Profesionales de la información
Lectura
Bibliotecas públicas
Bibliotecas digitales

description: Questionnaire addressed to the staff of the Galician Public Library Network about their habits, attitudes and knowledge in relation to digital reading and e-lending services. The form was designed with Qualtrics and remained open from 7/02/2022 until 22/02/2022 and was sent to the 322 libraries of the Network that were listed as active in the directory of this region on 15/01/2022. Cuestionario dirigido al personal de la Red de Bibliotecas Públicas de Galicia sobre sus hábitos, actitudes y conocimientos en relación con la lectura digital y los servicios de préstamo electrónico. El formulario permaneció abierto desde el 7/02/2022 hasta el 22/02/2022 y se remitió a las 322 bibliotecas de la Red que figuraban como activas en el directorio de esta comunidad el 15/01/2022.
The appropriateness of participative management in the public sector
Creators: name: Tyrer, Greville B. .
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.
Finding Horndeski theories with Einstein gravity limits
Creators: name: McManus, Ryan
name: Lombriser, Lucas
name: Peñarrubia, Jorge
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Horndeski action is the most general scalar-tensor theory with at most second-order derivatives in the equations of motion, thus evading Ostrogradsky instabilities and making it of interest when modifying gravity at large scales. To pass local tests of gravity, these modifications predominantly rely on nonlinear screening mechanisms that recover Einstein's Theory of General Relativity in regions of high density. We derive a set of conditions on the four free functions of the Horndeski action that examine whether a specific model embedded in the action possesses an Einstein gravity limit or not. For this purpose, we develop a new and surprisingly simple scaling method that identifies dominant terms in the equations of motion by considering formal limits of the couplings that enter through the new terms in the modified action. This enables us to find regimes where nonlinear terms dominate and Einstein's field equations are recovered to leading order. Together with an efficient approximation of the scalar field profile, one can then further evaluate whether these limits can be attributed to a genuine screening effect. For illustration, we apply the analysis to both a cubic galileon and a chameleon model as well as to Brans-Dicke theory. Finally, we emphasise that the scaling method also provides a natural approach for performing post-Newtonian expansions in screened regimes.
description: 33 pages
Bureaucracy and managerialism in Australia
Creators: name: Marks, Lindon.
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.