cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
We do it for love and the money: an investigation into the relationship of perceived pay equity to intention to stay working in the Community Services sector of the Australian workforce
Creators: name: Tunnicliffe, Jody Leta
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in partial fulfilment of the requirements for the degree of Professional Doctorate in Public Health to the School of Psychology and Public Health, College of Science, Health and Engineering, La Trobe University, Bundoora.
The Shadow Space of Allegorical Machines: Situating Locative Media
Creators: name: Ingersoll, Alex Monroe
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: This dissertation utilizes a media archaeological approach to the analysis of locative media, which are technologies that organize an experience of spatial orientation. For instance, a user can use a mobile phone to connect to a cellular network and generate a visualization of the material space in which he or she is positioned with annotated or interactive information on the screen. My critical approach to locative media is influenced by a historical constellation of orientation technologies, their contributions to the social imaginations of space, and the resulting experiences and expectations that are negotiated by the material, symbolic, and ideal. Four case studies on the astrolabe, magnetic compass, divining rod, and digital locative media make up a broader historical arrangement of which, I argue, digital locative media are the latest manifestation. Like other media technologies such as radio or television, these spatial technologies offer a window onto another world while also offering (other)spaces of symbolic and cultural codes that are layered over material space. The ability to reveal these otherspaces is associated with the recurring transcendent logic of locative media as individuals are encouraged to unveil the real behind the apparent in order to become united with a hybrid (and enchanted) ecology of the virtual and real. My locative media archaeology involves a theorization of allegorical machines, which is a term I use to analyze the interfaced interpretation of a shadow (imagined or informational) otherspace in relation to a porous correspondence between subject and space. This theorization is an interrogation of how engineers, technological promoters, and users position allegorical machines as making the supersensible sensible through an interface with the sublime. In other words, locative media are technological attempts to make the vague intelligible by bringing what lies outside the realm of physical experience into contact with the senses. Transcending to otherspaces such as the electromagnetic spectrum or the digital network involves an inherent metaphysics of the interface, which as liaisons between bodies and spaces generate animations such as the one that is the focus of this dissertation: the sublime desire or fear of unveiling the unknown space beyond space.
Coherence and multimode correlations from vacuum fluctuations in a microwave superconducting cavity
Creators: name: Lähteenmäki, Pasi
name: Paraoanu, Gheorghe Sorin
name: Hassel, Juha
name: Hakonen, Pertti J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The existence of vacuum fluctuations is one of the most important predictions of modern quantum field theory. In the vacuum state, fluctuations occurring at different frequencies are uncorrelated. However, if a parameter in the Lagrangian of the field is modulated by an external pump, vacuum fluctuations stimulate spontaneous downconversion processes, creating squeezing between modes symmetric with respect to half of the frequency of the pump. Here we show that by double parametric pumping of a superconducting microwave cavity, it is possible to generate another fundamental type of correlation, namely coherence between photons in separate frequency modes. The coherence correlations are tunable by the phases of the pumps and are established by a quantum fluctuation that stimulates the simultaneous creation of two photon pairs. Our analysis indicates that the origin of this vacuum-induced coherence is the absence of 'which-way' information in the frequency space.
Generation of optical Schrödinger cat states in intense laser-matter interactions
Creators: name: Lewenstein, Maciej
name: Ciappina, Marcelo F.
name: Pisanty, Emilio
name: Rivera-Dean, Javier
name: Stammer, Philipp
name: Lamprou, Theocharis
name: Tzallas, Paraskevas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The physics of intense laser-matter interactions is described by treating the light pulses classically, anticipating no need to access optical measurements beyond the classical limit. However, the quantum nature of the electromagnetic fields is always present. Here, we demonstrate that intense laser-atom interactions may lead to the generation of highly non-classical light states. This was achieved by using the process of high-harmonic generation in atoms, in which the photons of a driving laser pulse of infrared frequency are up-converted into photons of higher frequencies in the extreme ultraviolet spectral range. The quantum state of the fundamental mode after the interaction, when conditioned on the high-harmonic generation, is a so-called Schrödinger cat state, which corresponds to a superposition of two distinct coherent states: the initial state of the laser and the coherent state reduced in amplitude that results from the interaction with atoms. The results open the path for investigations towards the control of the non-classical states, exploiting conditioning approaches on physical processes relevant to high-harmonic generation.
description: We dedicate this work to the memory of Roy J. Glauber, the inventor of coherent states
SPATIAL ANALYSIS OF INDUSTRIAL SITES AND NORTH CAROLINA GROUNDWATER CONTAMINATION
Creators: name: Murchison, Molly
Publisher: name: University of North Carolina at Chapel Hill Graduate School
Year: 2014
Subjects: Geodesy
Geographic information systems
Environmental sciences

description: This study investigates groundwater contamination at multiple levels of spatial resolution, and quantifies relationships between water quality and potential sources of contamination. The study's source for water quality data is a database of private well test results collected by the NC Department of Health and Human Services, and the potential contamination sources under consideration are sites from the National Priority List (NPL) and the Toxics Release Inventory (TRI). Two levels of spatial analysis compare groundwater concentrations of individual contaminants - one county aggregated level, and one spatially continuous level, based on BME mapping of contaminants. A subsequent analysis relates TRI sites to groundwater concentrations of an aggregation of chemicals that are associated with the respective sites. A screening process based on examining these associations suggests eight TRI sites that may have an influence on groundwater quality. The strongest associations emerging from this process are for: Chemical Specialties Inc., an inorganic metallic salts production facility, and Novozymes North America Inc, an industrial biotechnology facility.
Brownian motion of neutrinos in the Sun [On the distribution of collisions of a neutrino with nucleons of the Sun]
Creators: name: Slad, L. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: When solving the solar neutrino problem on the basis of the hypothesis of the existence of a new interaction between electron neutrinos and nucleons, carried by a massless pseudoscalar boson, it becomes necessary to find the consequences of the short-term Brownian motion of neutrinos in the Sun. Earlier, we transmitted these consequences by the effective number of collisions of a neutrino with nucleons of the Sun, assuming the equality of fluxes near the Earth of left- and right-handed solar neutrinos. In this paper, we analyze the transfer of the mentioned consequences by a test geometric distribution of collisions with one free parameter. This distribution provides good agreement between theoretical and experimental results for all five observed processes with solar neutrinos, while it gives the ratio of fluxes near the Earth of left- and right-handed neutrinos equal to 0.516:0.484. With such a ratio, the acceptability of the method of the effective number of collisions of a neutrino with nucleons is again confirmed.
description: 6 pages. Journal version
Gateway to freedom and instrument of order: the Friedland transit camp, 1945-1955
Creators: name: Holmgren, Derek John
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: This thesis examines the history of the Friedland transit camp for German refugees, expellees from Eastern Europe, and returning prisoners of war from 1945 to 1955. It contends that the camp functioned as a crucial provider of regulated humanitarianism for the over one million individuals processed there and for the surrounding West German society. The facility offered humanitarian assistance, but it also regulated the flow of incoming individuals in order to prevent a deluge from uprooted masses. To accomplish this mission, the camp both relied upon and fostered the reestablishment of civil organizations. Yet, as this thesis also demonstrates, the camp became a space onto which locals, German administrators, and Allied authorities projected fears of the very instability it was meant to solve. The Friedland facility thus stood at the intersection of postwar stability and security concerns and informs the history of postwar German reconstruction.
title: Methode zur parametrischen globalen Modellordnungsreduktion für eine effiziente Validierung dynamischer Systeme
Creators: name: Hülsebrock, Moritz
Publisher: name: UNSPECIFIED
Year: 2023

description: Die Fortschritte in den Bereichen der numerischen Modellierung und der Rechenleistung von Computern ermöglichen es Wissenschaftlern und Ingenieuren, mit zunehmend komplexeren Modellen das reale Verhalten von technischen Systemen zu beschreiben. Trotzdem muss aufgrund von Parameter- und Modellunsicherheit die Entwicklung stets von Maßnahmen zur Modellverifizierung, Validierung und Quantifizierung der Unsicherheit begleitet werden. Seit einiger Zeit werden zunehmend stochastische Methoden zur Quantifizierung der Modell- und Parameterunsicherheit in frühen Entwurfsphasen verwendet, um die Simulationsergebnisse und Systeme zuverlässiger zu machen. Hierfür ist es notwendig, die Finite-Elemente-Modelle (FE-Modelle) für verschiedene Parametersätze oder Systemkonfigurationen auszuwerten. Zur genauen Vorhersage des dynamischen Verhaltens mechanischer Systeme sind allerdings große und komplexe Modelle notwendig. Dadurch entsteht ein hoher Rechenaufwand, weshalb stochastische Methoden für den praktischen Einsatz häufig ungeeignet sind. Im Rahmen dieser Arbeit wird eine Methode zur parametrischen Modellordnungsreduktion (PMOR) vorgestellt, die wesentliche Herausforderungen bestehender PMOR-Methoden überwindet. In Abhängigkeit der Höhe der Parameteränderung ermöglicht die "Parametric Global Mode Reduction" (PGMR) Methode im Vergleich zu bekannten Methoden eine höhere Reduktion der Modellordnung bei gleichbleibender Genauigkeit. Die sich daraus ergebende effizientere Berechnung ermöglicht einen breiteren Einsatz stochastischer Methoden in der Auslegung, Optimierung und Überwachung mechanischer Systeme. Die neu entwickelte Methodik wird im Rahmen der Arbeit anhand experimenteller Untersuchungen umfangreich validiert. Darüber hinaus wird die PGMR-Methode in eine Entwicklungsmethodik zur Validierung dynamischer Systeme mit experimentellen Daten und zur Quantifizierung der Parameterunsicherheit integriert. Die Entwicklungsmethodik wird anschließend zum Aufbau eines Leiterplattenmodells und Quantifizierung der Parameterunsicherheit verwendet. Die Ergebnisse zeigen, dass der verwendete hierarchische Bayes-Ansatz in der Lage ist, die Varianz im dynamischen Verhalten der Leiterplatten aufgrund von Toleranzen in der Fertigung und Schwankungen im Materialverhalten abzubilden.
Spatial beam self-cleaning in multimode fiber
Creators: name: Krupa, Katarzyna
name: Tonello, Alessandro
name: Shalaby, Badr M.
name: Fabert, Marc
name: Barthélémy, Alain
name: Millot, Guy
name: Wabnitz, Stefan
name: Couderc, Vincent
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Multimode optical fibres are enjoying a renewed attention, boosted by the urgent need to overcome the current capacity crunch of single-mode fibre systems and by recent advances in multimode complex nonlinear optics [1-13]. In this work, we demonstrate that standard multimode fibres can be used as ultrafast all-optical tool for transverse beam manipulation of high power laser pulses. Our experimental data show that the Kerr effect in a graded-index multimode fibre is the driving mechanism for overcoming speckle distortions, leading to a somewhat counter-intuitive effect resulting in a spatially clean output beam robust against fibre bending. Our observations demonstrate that nonlinear beam reshaping into the fundamental mode of a multimode fibre can be achieved even in the absence of a dissipative process such as stimulated scattering (Raman or Brillouin) [14,15].
description: 8 pages, 5 figures
Role of extracellular vesicles in colorectal cancer progression
Creators: name: Rai, Alin
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the Department of Biochemistry and Genetics, Institute for Molecular Sciences, La Trobe University, Bundoora.

Thesis with publications.

This thesis was a recipient of the Nancy Millis Award for theses of exceptional merit.
High-pressure cylindrical ion trap mass spectrometry
Creators: name: Wolfe, Derek
Publisher: name: University of North Carolina at Chapel Hill
Year: 2012

description: This work describes the development of mass spectrometry (MS) instrumentation capable of operating at helium buffer gas pressures up to 1 torr. This is approximately three orders of magnitude higher than the pressures used in commercially available MS instrumentation. High-pressure operation is desirable since it reduces the size, weight, and power (SWaP) of the instrument by reducing the pumping system workload. A simple and rugged roughing pump could achieve these pressures while reducing SWaP by eliminating the turbo pump. Therefore this technology could be used to develop next generation hand-portable instruments and bring MS to new applications. Custom MS instrumentation was designed and built to utilize 500 μm radius cylindrical ion trap (CIT) mass analyzers. Two vacuum chamber configurations were used to establish a performance baseline at traditional ion trap operating pressures. The instrument design was refined during these simple experiments before moving to high-pressure operation. The feasibility of high-pressure CIT operation up to 1 torr was first demonstrated using a differentially pumped instrument. Electron ionization was performed and a mass-selective instability scan was used to eject ions into a low-pressure chamber for detection with an electron multiplier. Peak broadening effects at high pressure were reduced by increasing axial RF amplitude and ejecting ions into a low-pressure detection region. Peak widths for Xe+ spectra at pressures from 38.6 to 983.5 mTorr were analyzed and average peak widths for these low and high-pressure spectra were found to be relatively constant. After demonstrating the CIT operation at high pressure, it was desirable to replace the electron multiplier with a pressure tolerant detector and simplify the instrument to a single vacuum chamber. The first experimental investigation of MS in this isobaric chamber at pressures up to 867 mTorr is reported. A solid-state capacitive transimpedance amplifier (CTIA) was used for ion detection at high pressures. Average peak widths for Xe+ ions in spectra acquired at pressures from 133 to 867 mTorr were found to be nearly constant. Results presented here demonstrate mass spectra at ~1 torr using a solid-state ion detector capable of operating at atmospheric pressure for MS applications requiring portability.
MPEC 2023-Q52 : 2023 QK1
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 QK1

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.
Parametric and non-parametric approaches to quantitating pharmacodynamic response
Creators: name: Olson, Emily Renee
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: The goal of this project was to evaluate factors that impact pharmacokineticpharmacodynamic (PK-PD) relationships, and to develop novel approaches for analysis of those relationships utilizing opioids as a model pharmacologic class. The role of protein binding in in vitro-to-preclinical and preclinical-to-clinical estimates of opioid potency was investigated; the optimal metric for characterizing in vivo potency was unbound brain EC50. The role of P-glycoprotein (P-gp) efflux at the blood brain barrier (BBB) in attenuating central nervous system (CNS) concentrations and pharmacologic response was evaluated in mice receiving loperamide, methadone, alfentanil or fentanyl. An integrated PK-PD model fit to the time course of antinociception and serum/brain concentrations revealed the influence of P-gp on brain:plasma ratio and brain:plasma equilibration half-life. The influence of behavioral responses in the hotplate latency antinociception assay was investigated for loperamide, methadone and sufentanil. PK-PD modeling suggested that processed responses, jumping and hind-paw licking, reflected centrally-mediated processes, whereas reflexive responses, lifting or shaking of the hind paw, were mediated predominately in the periphery, with a slight additive central contribution. The influence of truncating the dynamic range of pharmacologic effect on recovery of PD parameters was investigated with fentanyl and morphine. Incorporating Emax as a parameter, as opposed to a fixed value, in PK-PD modeling improved model predictions when compared to assigning a fixed value at an artificial ceiling. The utility of area bounded by a hysteresis loop (ABH) as a nonparametric descriptor of dissociation between pharmacodynamics and pharmacokinetics was assessed with five opioids administered to P-gp-competent and P-gp-deficient mice. A Matlab routine was developed to calculate ABH, and this novel quantitative approach was evaluated relative to image analysis of the hysteresis loop. ABH correlated with area under the curve (AUC) and the model-derived parameters EC50 and ke0. Taken together, these approaches provide a framework for understanding the multiplicity of factors that influence drug concentrations and pharmacologic effect, and provide insight into how information derived from parametric and non-parametric analyses can be used to characterize PK-PD relationships and predict the behavior of PK-PD systems.
Projective geometry and the quaternionic Feix-Kaledin construction
Creators: name: Borowka, Aleksandra W.
name: Calderbank, David M. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A20, 53B10, 53C26, 53C28, 32L25

description: Starting from a complex manifold S with a real-analytic c-projective structure whose curvature has type (1,1), and a complex line bundle L with a connection whose curvature has type (1,1), we construct the twistor space Z of a quaternionic manifold M with a quaternionic circle action which contains S as a totally complex submanifold fixed by the action. This extends a construction of hypercomplex manifolds, including hyperkaehler metrics on cotangent bundles, obtained independently by B. Feix and D. Kaledin. When S is a Riemann surface, M is a self-dual conformal 4-manifold, and the quotient of M by the circle action is an Einstein-Weyl manifold with an asymptotically hyperbolic end, and our construction coincides with a construction presented by the first author in a previous paper. The extension also applies to quaternionic Kaehler manifolds with circle actions, as studied by A. Haydys and N. Hitchin.
description: 28 pages, (v2) added material on Swann bundles, quaternionic Kaehler metrics and the Haydys-Hitchin correspondence, (v3) refereed version, restructured content, to appear in TAMS
Music to support physical activity in older adults with health conditions
Creators: name: Clark, Imogen Nicola
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Allied Health, College of Science, Health and Engineering, La Trobe University, Bundoora.

This thesis was a recipient of the Nancy Millis Award for theses of exceptional merit.
The challenges of second generation immigrants in Italy: a comparative analysis between Italian immigrants in the United States and Egyptian immigrants in Italy
Creators: name: Nanni, Beatrice Maria Rosa
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Italy, a traditional nation state with a long history of emigration, is currently at a cross-road as it faces an immigration crisis. This comparative analysis between Italian immigrants in the U.S., during the late nineteenth century, and Egyptian immigrants in Italy, during the late twentieth century, is meant to illustrate how Italy could utilize its firsthand experience as an emigrant country to tackle its current immigration problems. Differences emerge in the comparison highlighting three problems which currently impede the integration of second generation immigrants in Italy. The first two problems, the Italian government's approach and the jus sanguinis citizenship laws, can be attenuated, if not solved, by legislative action from the Italian government. The third problem, the Islamic religion, lacks an immediate solution because of its international dimensions. The future integration of second generation immigrants in Italy is dependant upon the way in which Italy confronts these three problems.
The Modular Arbitrary-Order Ocean-Atmosphere Model: MAOOAM v1.0
Creators: name: De Cruz, Lesley
name: Demaeyer, Jonathan
name: Vannitsem, Stéphane
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This paper describes a reduced-order quasi-geostrophic coupled ocean-atmosphere model that allows for an arbitrary number of atmospheric and oceanic modes to be retained in the spectral decomposition. The modularity of this new model allows one to easily modify the model physics. Using this new model, coined the "Modular Arbitrary-Order Ocean-Atmosphere Model" (MAOOAM), we analyse the dependence of the model dynamics on the truncation level of the spectral expansion, and unveil spurious behaviour that may exist at low resolution by a comparison with the higher-resolution configurations. In particular, we assess the robustness of the coupled low-frequency variability when the number of modes is increased. An "optimal" configuration is proposed for which the ocean resolution is sufficiently high, while the total number of modes is small enough to allow for a tractable and extensive analysis of the dynamics.
description: 35 pages, 14 figures, 2 tables
Cusps of hyperbolic 4-manifolds and rational homology spheres
Creators: name: Ferrari, Leonardo
name: Kolpakov, Alexander
name: Slavich, Leone
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57N16, 57M50, 52B10, 52B11

description: In the present paper, we construct a cusped hyperbolic $4$-manifold with all cusp sections homeomorphic to the Hantzsche-Wendt manifold, which is a rational homology sphere. By a result of Golénia and Moroianu, the Laplacian on $2$-forms on such a manifold has purely discrete spectrum. This shows that one of the main results of Mazzeo and Phillips from 1990 cannot hold without additional assumptions on the homology of the cusps. This also answers a question by Golénia and Moroianu from 2012. We also correct and refine the incomplete classification of compact orientable flat $3$-manifolds arising from cube colourings provided earlier by the last two authors.
description: 15 pages, 1 figure, 1 table; SageMath worksheets available at https://github.com/sashakolpakov/24-cell-colouring
title: Ein Beitrag zur Prozessautomatisierung im Bauprojekt-Controlling
Creators: name: Kosel, Christopher
Publisher: name: UNSPECIFIED
Year: 2023

description: Die Automatisierung von Prozessen innerhalb von Bauprojekten weist ein hohes Potenzial an Verbesserungsmöglichkeiten auf. Von substanzieller Bedeutung in diesem Kontext ist eine Steigerung resp. die Einhaltung einer hohen Effizienz vor allem in den Prozessen der Planung und Ausführung. Da viele der bis dato verwendeten Bauverfahren bereits einen hohen Digitalisierungsgrad und folglich einen hohen Automatisierungsgrad aufweisen, gestaltet sich die Frage, an welcher Stelle eine Änderung notwendig ist, um die geringe Effizienz, die aktuell in einigen Bereichen der Bauindustrie herrscht, zu steigern. Bei der Durchführung empirischer Untersuchungen stellte sich der Bedarf nach einer Automatisierung der von Menschen durchgeführten Prozesse innerhalb von Bauprojekten heraus. Aus diesem Grund bestand das zentrale Ziel der vorliegenden Dissertation darin, eine Regelungsmöglichkeit innerhalb des Bauprojekt-Controllings zu entwickeln, die zu einer Beschleunigung der durch den Menschen vorgebebenen Prozessgeschwindigkeit führt. In Form einer neuen Systematik von Steuer- und Regelkreisen wurde dies erreicht. Dabei konnten die Latenzen innerhalb einzelner Controllingmechanismen erheblich reduziert werden. Es wurden Fortschritte in Richtung der Approximation einer ganzheitlichen virtuellen Abbildung des komplexen sozio-ökonomischen-technischen Systems Bauen erzielt. Die vorab angesprochene Beschleunigung wurde durch die Verknüpfung einzelner, bisher manuell durchgeführter Prozesse durch neu generierte automatisierte Prozesse sowie der Anbindung resp. der Erweiterung von Schnittstellen sowohl in Bauverfahren als auch in Software ermöglicht. Darüber hinaus konnte eine Steigerung des Automatisierungsgrades bei einer quasi-kontinuierlichen und selbstregulierenden Datenaktualisierung eines Steuerungsprozesses mit bis dato auf dem Markt verfügbaren und somit praxisnahen Mitteln erreicht werden. Insgesamt leistet die vorliegende Arbeit einen Beitrag zur Lösung der Effizienzproblematik sowie zur Steigerung der Prozessautomatisierung innerhalb des Bauprojekt-Controllings. Dabei wird den Bau- und Projektleitenden sowie den Projektbearbeitenden die Möglichkeit der Effizienzsteigerung innerhalb ihres Berufsalltags gegeben. Es wird ermöglicht ihre Arbeit zu erleichtern und die Bauwirtschaft für Arbeitnehmer wieder attraktiver zu gestalten.
Direct and inverse spectral problems for hybrid manifolds
Creators: name: Roganova, Svetlana
Publisher: name: Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II
Year: 2007
Subjects: subject: Hybride Mannigfaltigkeiten
subject: Resolventen Entwicklung
subject: Laplace-Operator
subject: directe und inverse Spectraltheorie
subject: Hybrid manifold
subject: resolvent expansion
subject: Laplace operator
subject: direct and inverse spectral theory
subject: 510 Mathematik
subject: 27 Mathematik

description: Es werden hybride Mannigfaltigkeiten untersucht, d.h. Systeme von zweidimensionalen Mannigfaltigkeiten, die durch eindimensionale Intervalle miteinander verknuepft sind. In einer solchen Struktur definieren wir einen Laplace-Operator, der sich aus den Laplace-Beltrami-Operatoren auf den glatten Teilen und Randbedingungen an den Verknuepfungspunkten zusammenstellt. Durch Verwendung der Kreinschen Theorie selbstadjungierter Erweiterungen wird es gezeigt, dass alle moeglichen Laplace-Operatoren durch hermitsche Matrizen einer speziellen Form parametrisiert werden koennen. Wir berechnen die Entwicklung der Spur der quadrirten Resolvent eines Laplace-Operators fuer grosse Spectralparameter vermittels der Randbedingungen und der Waermeleitungskoeffizienten der glatten Teilen der hybriden Mannigfaltigkeit. Unter gewissen zusaetzlichen Annahmen is es moeglich, aus dieser Entwicklung einige geometrische Invarianten und einige Information ueber den Randbedingungen zu gewinnen.
description: We consider a hybrid manifold (i.e. some two-dimensional manifolds connected with each other by some segments) and a Laplace operator on it. Such an operator can be constructed by using the Laplace-Beltrami operators on each part of the hybrid manifold with some boundary conditions in the points of gluing. We use the Krein theory of self-adjoint extensions to show that all possible Laplace operators are parameterized by some Hermitian matrices. We find the large spectral parameter expansion of the trace of the second power of the resolvent of a fixed Laplace operator in terms of the boundary condition matrix and heat kernel coefficients for the parts of the hybrid manifold. If we assume that we already have such an expansion for some hybrid manifold then we can find some data about this manifold (inverse spectral problem). Under some additional conditions it is possible to find some geometric invariants of the hybrid space and some information about the boundary conditions matrix. We apply the same technique also to two degenerate cases of hybrid manifolds: quantum graphs and the manifolds glued without segments.
MPEC 2023-Q53 : 2023 QL1
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 QL1

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.
Stability analysis of thermo-acoustic nonlinear eigenproblems in annular combustors. Part I. Sensitivity
Creators: name: Magri, Luca
name: Bauerheim, Michael
name: Juniper, Matthew
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present an adjoint-based method for the calculation of eigenvalue perturbations in nonlinear, degenerate and non self-adjoint eigenproblems. This method is applied to a thermo-acoustic annular combustor network, the stability of which is governed by a nonlinear eigenproblem. We calculate the first- and second-order sensitivities of the growth rate and frequency to geometric, flow and flame parameters. Three different configurations are analysed. The benchmark sensitivities are obtained by finite difference, which involves solving the nonlinear eigenproblem at least as many times as the number of parameters. By solving only one adjoint eigenproblem, we obtain the sensitivities to any thermo-acoustic parameter, which match the finite-difference solutions at much lower computational cost.
description: 27 pages, 10 figures
Distribution of Human Papillomavirus Genotypes Among Women with Cervical Cancer in Nigeria
Creators: name: Nyam, Chuwang Jacob
Publisher: name: University of Illinois at Chicago
Year: 2023

description: The prevalence of invasive cervical cancer (ICC) is high in Nigeria, with over 12,000 new cases responsible for over 8,000 deaths of women annually. This has been attributed to a large population of women with HIV infection who are 6 times at risk of developing ICC than women without HIV. We examined the distribution and prevalence of HPV genotypes among HIV-positive and HIV-negative women with ICC in Nigeria. We utilized baseline data and DNA samples from cervical tissue obtained from a prospective cohort study in Nigeria between March 2018 and September 2022. High-throughput next-generation amplicon sequencing of the HPV L-1 gene was used to identify and classify HPV genotypes from cervical samples. Logistic regression models were used to estimate associations between HIV and HPV infections. All statistical analyses were performed on Stata/BE 17.0 software. The study included 349 women (185 HIV-/ICC+, 64 HIV+/ICC+, 100 and HIV+/ICC-). The mean (SD) of HIV-positive women with ICC was 49.5 (10.9) years, compared to 47.0 (8.8) in HIV-positive women without ICC and 58.8 (12.9) in HIV-negative women with ICC, p <0.001. We tested 286 women (82.0%) for HPV and found HIV-positive women with ICC had a higher prevalence of HR-HPV, 77.6%, compared to 60.0% among HIV-negative women with ICC (p < 0.001). HIV-positive women showed the highest proportion of multiple HPV infections at 8.2%, compared to 1.4% among HIV-negative women with ICC and 2.1% without ICC (p < 0.001). HPV16 or HPV18 accounted for 65.1% (95% CI: 56.4, 72.9) of all HPV. The commonest HR-HPV detected included HPV16 (45.8%), HPV18 (19.4%), HPV45 (9.3%) and HPV35 (6.2%). Others Included HPV52 (5.4%), HPV59 (3.9%), and HPV58 (3.1%). LR-HPV genotypes had HPV11 (2.3%), HPV61 (1.6%), and HPV81 (1.6%). In multivariable models, the odds ratios comparing HIV-positive to HIV-negative women were 3.26 (95% CI: 1.44, 7.35; p = 0.004) for HR-HPV and 3.87 (95% CI: 2.71, 5.04; p < 0.001) for any HPV infections. In conclusion, HIV-positive women had the highest prevalence of HR-HPV and were associated with increased odds of acquiring HPV infection, highlighting the importance of understanding how long-term HIV infection may promote cervical cancer development.
Evaluation of different regression models for detection of adulteration of mustard and canola oil with argemone oil using fluorescence spectroscopy coupled with chemometrics
Creators: name: Shiv, Kunal
name: Singh, Anupam
name: Kumar, Sachin
name: Prasad, Lal Bahadur
name: Gupta, Seema
name: Bharty, Manoj Kumar
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified

description: Mustard and canola oils are commonly used cooking oils in Asian countries such as India, Nepal, and Bangladesh, making them prone to adulteration. Argemone is a well-known adulterant of mustard oil, and its alkaloid sanguinarine has been linked with health conditions such as glaucoma and dropsy. Utilising a non-destructive spectroscopic method coupled with a chemometric approach can serve better for the detection of adulterants. This work aimed to evaluate the performance of various regression algorithms for the detection of argemone in mustard and canola oils. The spectral dataset was acquired from fluorescence spectrometer analysis of pure as well as adulterated mustard and canola oils with some local and commercial samples also. The prediction performance of the eight regression algorithms for the detection of adulterants was evaluated. Extreme gradient boosting regressor (XGBR), Category gradient boosting regressor (CBR), and Random Forest (RF) demonstrate potential for predicting adulteration levels in both oils with high R2 values.
Schwinger pair production at nonzero temperatures or in compact directions
Creators: name: Brown, Adam R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Electric fields may decay by quantum tunneling: as calculated by Schwinger, an electron-positron pair may be summoned from the vacuum. In this paper I calculate the pair-production rate at nonzero temperatures. I find that at high temperatures the decay rate is dominated by a new instanton that involves both thermal fluctuation and quantum tunneling; this decay is exponentially faster than the rate in the literature. I also calculate the decay rate when the electric field wraps a compact circle (at zero temperature). The same new instanton also governs this rate: I find that for small circles decay is dominated by a process that drops the electric field by one unit, but does not produce charged particles.
description: v2: switched order of the two derivations for pedagogical reasons, added exposition, close to published version
Comparison of immunoassay and LC-tandem mass spectrometry analyses of ractopamine in hog oral fluid
Creators: name: Shelver, Weilin L.
name: McGarvey, Amy M.
name: Holthusen, Jason E.
name: Young, Jennifer M.
name: Byrd, Christopher J.
name: Smith, David J.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Biochemistry
Biotechnology
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Virology

description: The accurate detection of ractopamine in food animals is crucial for marketing since some entities require animals or animal carcasses to be free of ractopamine residues. Field-based ractopamine screening tests that are rapid, sensitive, and capable of high-throughput are highly desirable to ensure that inadvertent exposure to ractopamine did not occur in animals marketed as animals that have not been fed ractopamine. An immunochemically based lateral flow assay was used to analyze oral fluids from hogs never exposed to ractopamine and from hogs that were presumed positives and results were confirmed using an enhanced sensitivity LC-MSMS method. We found that an immunochemically based lateral flow system having a working range of 2.5 to 15 ng mL−1 worked well as a screening assay with 1.7% false positive results in freshly collected hog oral fluids. Using ractopamine glucuronide standards and LC-MSMS, we determined that the false positive results were not due to the presence of ractopamine glucuronide metabolites in oral fluids.
Phase-modulated cavity magnon polaritons as a precise magnetic field probe
Creators: name: Crescini, Nicolò
name: Carugno, Giovanni
name: Ruoso, Giuseppe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We describe and operate a novel spin-magnetometer based on the phase modulation of cavity magnon polaritons. In this scheme a rf magnetic field is detected through the sidebands it induces on a pump, and the experimental configuration allows for a negligible pump noise and a high frequency readout. The demonstrator setup, based on a copper cavity coupled to an yttrium iron garnet sphere hybrid system, reached a sensitivity of $2.0\,\mathrm{pT/\sqrt{Hz}}$, evading the pump noise and matching the theoretical previsions. An optimized setup can attain a rf magnetic field sensitivity of about $8\,\mathrm{fT/\sqrt{Hz}}$ at room temperature. An orders of magnitude improvement is expected at lower temperatures, making this instrument one of the few magnetometers accessing the sub-fT limit. Due to its natural applications, miniaturization and multiplexing are eventually discussed.
A sequence of triangle-free pseudorandom graphs
Creators: name: Conlon, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A construction of Alon yields a sequence of highly pseudorandom triangle-free graphs with edge density significantly higher than one might expect from comparison with random graphs. We give an alternative construction for such graphs.
description: 6 pages
Exploring the feasibility and efficacy of a modified Mediterranean dietary intervention delivered to individuals with major depression
Creators: name: Opie, Rachelle Sara
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the Department of Rehabilitation, Nutrition and Sport, School of Allied Health, College of Science, Health and Engineering, La Trobe University, Bundoora.

Thesis with publications.
An Intersectional Approach to Mother-Child Interaction Research: Intergrating Women's Studies and Nursing Science
Creators: name: Rogers-Cook, Jamie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: The disparities between children with social disadvantages and those with social advantages are reflective of the inequities and patterns of discrimination that occur in the larger social context. However, these discriminatory social processes, such as institutional racism and poverty, are not typically reflected in the traditional positivist mother-child interaction research process that predominantly informs policy. Integrating social processes and related aspects of culture to the science of mother-child interaction could bring researchers a step closer to understanding the causes of disparities and effective interventions to close the gap. This dissertation focuses on the broad problem of inequities in diverse groups of women and children while specifically highlighting one aspect of the research process: observational measurement. Merging knowledge gained from women's studies scholarship and nursing science is the impetus for the scholarly works that comprise this dissertation. An intersectional approach to the science of mother-child interaction is the thread that links the three manuscripts within this dissertation. An intersectional approach provides a framework within which a scientist's primary focus is the consideration of the mother and child's situational context and the power differentials that inherently influence their relationship and each person's individual development. From this standpoint, there is a shift from reductionist thinking about women as mothers to an inductive examination of mothering behaviors in diverse and varying groups of women. There is a specific focus on the concepts of maternal sensitivity and maternal control found in the most commonly used observational instruments because scientists who study mother-child interactions are beginning to question the applicability and validity of these concepts in diverse families. Since these instruments are used in predominant studies that influence public policy and intervention design, it is critical that the instruments accurately reflect a non-biased view of mothering behavior. This dissertation is organized around three scholarly papers (Chapters Two, Three, and Four) representing distinctive ways of thinking about and examining the study of mother-child interaction. The scholarly works within this dissertation offer an example of critical thinking and science that consider discriminatory processes within society as well as discrimination within the research process.
Digital Signal Processing (DSP), Digital Filter Applications
Creators: name: Alali, Walid Y
Publisher: name: figshare
Year: 2022
Subjects: Signal processing
Software engineering not elsewhere classified
Engineering design

description: Abstract We This Paper is describe of multi-rate a finite impulse response digital filter real time to transient spectroscopy of radio frequency (W), in this application we implementing digital signal processing using TMS320 micropro-cessor by pre-forming multi-rate filters rate reduction sampling and then increasing the sampling rate.