cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multi-wavelength observations of starbursting protoclusters
Creators: name: Cheng, Tai-An
Publisher: name: Imperial College London
Year: 2019

description: Crossmatching between Planck and Herschel data has revealed a number of candidate protoclusters with starbursting galaxies. These starbursting galaxies are believed to be progenitors of elliptical galaxies in the cores of today's massive galaxy clusters. In this thesis, multi-wavelength observations of the candidate starbursting protoclusters are shown and their physical properties are studied. Using SCUBA-2 observations, number counts, colours, photometric redshifts, star-formation rates (SFRs) and infrared luminosities of the 850 μm sources in the candidate protoclusters are estimated. More than 70% of the candidate protoclusters show overdensities of 850 μm sources compared with the field. Using the Very Large Array (VLA) 6 GHz observations, number counts, the far-infrared-radio correlation, morphologies and multiplicities of the radio sources are studied, in which tentative overdensities and AGNs are found. Using lens modelling, the source distribution of a lensed dusty star-forming galaxy (DSFG) is studied, revealing multiple components in its radio emission. Using the William Herschel Telescope (WHT) observations at optical/near-infrared, the 4000-Å breaks of the candidate member galaxies are identified, and their colours and photometric redshifts are estimated. Using millimetre spectroscopy at IRAM’s 30m Telescope, CO lines are detected for a starbursting galaxy in a candidate protocluster, and its physical properties are determined. The multiwavelength observations suggest that the candidate starbursting protoclusters lie at redshifts between 1 < z < 3, and their starbursting member galaxies are forming the majority of their stellar masses with SFR 1,000 solar-masses/yr, which is consistent with the peak of cosmic SFR-density (SFRD) at z ∼ 2. Future work and observations are expected to increase the sample of these extreme protoclusters and to understand the formation of galaxy and galaxy clusters.
Fragmented Superradiance of a Bose-Einstein Condensate in an Optical Cavity
Creators: name: Lode, Axel U. J.
name: Bruder, Christoph
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The Dicke model and the superradiance of two-level systems in a radiation field have many applications. Recently, a Dicke quantum phase transition has been realized with a Bose-Einstein condensate in a cavity. We numerically solve the many-body Schrödinger equation and study correlations in the ground state of interacting bosons in a cavity as a function of the strength of a driving laser. Beyond a critical strength, the bosons occupy multiple modes macroscopically while remaining superradiant. This fragmented superradiance can be detected by analyzing the variance of single-shot measurements.
description: 4 pages, 4 figures; 11 pages of Supplementary Information including 2 figures. Software available at http://ultracold.org
Quantum-information processing using strongly dipolar coupled nuclear spins
Creators: name: Suter, Dieter
name: Mahesh, T. S.
Publisher: name: The American Physical Society
Year: 2006
Subjects: subject: 530

description: Dipolar coupled homonuclear spins present challenging, yet useful systems for quantum-information processing. In such systems, the eigenbasis of the system Hamiltonian is the appropriate computational basis and coherent control can be achieved by specially designed strongly modulating pulses. In this paper we describe the first experimental implementation of the quantum algorithm for numerical gradient estimation by nuclear magnetic resonance, using the eigenbasis of a four spin system.
Black hole nonmodal linear stability: odd perturbations of Reissner-Nordström
Creators: name: Tío, Julián M. Fernández
name: Dotti, Gustavo
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Following a program on black hole nonmodal linear stability initiated in Phys.\ Rev.\ Lett.\ {\bf 112} (2014) 191101, we study odd linear perturbations of the Einstein-Maxwell equations around a Reissner-Nordström (A)dS black hole. We show that all the gauge invariant information in the metric and Maxwell field perturbations is encoded in the spacetime scalars $\mathcal{F} =δ(F^*_{αβ} F^{αβ})$ and $\mathcal{Q} =δ(\tfrac{1}{48} C^*_{αβγδ} C^{αβγδ})$, where $C_{αβγδ}$ is the Weyl tensor, $F_{αβ}$ the Maxwell field, a star denotes Hodge dual and $δ$ means first order variation, and that the linearized Einstein-Maxwell equations are equivalent to a coupled system of wave equations for $\mathcal{F}$ and $\mathcal{Q}$. For nonnegative cosmological constant we prove that $\mathcal{F}$ and $\mathcal{Q}$ are pointwise bounded on the outer static region. The fields are shown to diverge as the Cauchy horizon is approached from the inner dynamical region, providing evidence supporting strong cosmic censorship. In the asymptotically AdS case the dynamics depends on the boundary condition at the conformal timelike boundary and there are instabilities if Robin boundary conditions are chosen.
description: Corrected treatment of axial perturbations. To appear in PRD
Are the ladies lucky? : a study of women and poker machine play in Victoria
Creators: name: Rubinstein, Ester.
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.
title: Essays on revealed preference
title: contributions to the theory of consumer's behavior
titleType: AlternativeTitle
Creators: name: Heufer, Jan
Publisher: name: Technische Universität Dortmund
Year: 2010
Subjects: subject: Revealed preference
subject: Axiomatische Nachfragetheorie
subject: Nichtparametrische Verfahren
subject: 330
subject: Bekundete Präferenz
subject: Nachfragetheorie
subject: Nichtparametrisches Verfahren

description: This thesis contributes to the theory of consumer’s behavior. It is devided into three parts:The first part gives a brief history of the theoretical developments relevant to the two consecutive parts and provides a detailed outline.The second part contains theoretical contributions. Specifically, (i) it provides a unifying proof technique to show that preference cycles can be of arbitrary length formore than two but not for two commodities. An immediate corollary is that the Weak Axiom of Revealed Preference only implies the Strong Axiom for two commodities, (ii) it provides a simple graphical way to construct preference cycles, (iii) it shows that for two dimensional commodity spaces any homothetic utility function that rationalizes each pair of observations in a set of consumption data also rationalizes the entire set of observations, (iv) it explorers rationalizability issues for finite sets of observations of stochastic choice and gives two rationalizability theorems.The third part provides three practical contributions. Specfically, (i) it explorers some possible applications of a lemma used in the chapter on homothetic preferences in two dimensions, (ii) it suggests a procedure to decide whether or not to treat a consumer who violates the Generalized Axiom of Revealed Preference as 'close enough' to utility maximization, (iii) it provides a new measure for the severity of a violation of utility maximization based on the extent to which the upper bound of the indifference map intersects the budget set.
An effector from the potato late blight pathogen hijacks the host ESCRT pathway to suppress an NLR/PRR immune receptor network
Creators: name: Madhuprakash, Jogi
name: Harant, Adeline
name: Shepherd, Samuel
name: Pai, Hsuan
name: Lawson, David M.
name: Wu, Chih-Hang
name: Bozkurt, Tolga O.
name: Derevnina, Lida
name: Kamoun, Sophien
name: Contreras, Mauricio P.
Publisher: name: Zenodo
Year: 2023
Subjects: NRC2 resistosome
Phytophthora infestans
AVRcap1b
NbTOL9a

description: Plant nucleotide-binding leucine-rich repeat (NLR) proteins are critical components of the plant immune system that recognize and respond to pathogen attacks. Upon immune activation, NLRs form higher order complexes termed resistosomes. Parasites can counteract host immunity by suppressing helper NLR proteins that function as central nodes in immune receptor networks. We previously reported that the Phytophthora infestans effector AVRcap1b can suppress cell death mediated cell surface and intracellular immune receptors by targeting helper NLRs NRC2/3. AVRcap1b associates with host NbTOL9a, a protein involved in ESCRT mediated vesicle trafficking, which acts as a negative regulator of NRC signaling. NbTOL9a is genetically required for full AVRcap1b immune suppression. The precise mechanism by which AVRcap1b suppresses NRCs is not fully understood. Here we obtained the crystal structure of AVRcap1b bound to the N-terminal ENTH domain of NbTOL9a. Mutating the AVRcap1b-NbTOL9a binding interface abolishes AVRcap1b immune suppression. We show that while AVRcap1b does not suppress NRC oligomerization, it specifically associates with activated, but not inactive, NRC2. We propose that AVRcap1b bridges the host ESCRT trafficking machinery and activated NRC2 complexes to suppress NRC-mediated cell death. Our results provide insights into how plant parasites can inhibit NLR-mediated signaling resulting in a broad suppression of both cell surface and intracellular immunity.
description: *This is a poster for exhibition in IS-MPMI 2023
(Re)thinking racial identity through difference
Creators: name: Pettitt, Annie.
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.
Tricritical Casimir forces and order parameter profiles in wetting films of $^3\text{He}$ -$^4\text{He}$ mixtures
Creators: name: Bafi, Nima Farahmand
name: Maciołek, Ania
name: Dietrich, Siegfried
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Tricritical Casimir forces in $^3\text{He}$ -$^4\text{He}$ wetting films are studied, within mean field theory, in therms of a suitable lattice gas model for binary liquid mixtures with short--ranged surface fields. The proposed model takes into account the continuous rotational symmetry O(2) of the superfluid degrees of freedom associated with $^4\text{He}$ and it allows, inter alia, for the occurrence of a vapor phase. As a result, the model facilitates the formation of wetting films, which provides a strengthened theoretical framework to describe available experimental data for tricritical Casimir forces acting in $^3\text{He}$ -$^4\text{He}$ wetting films.
Attaching and effacing bacterial pathogenesis: Characterisation of a severe disease model and the role of effector protein Map
Creators: name: Carson, Danielle
Publisher: name: Imperial College London
Year: 2019

description: The mouse pathogen Citrobacter rodentium is commonly used to model colitis such as that caused by infection with enterohaemorrhagic E. coli (EHEC). The translocation of effector proteins into host cells via a type III secretion system (T3SS) is instrumental in the infectivity of C. rodentium, enteropathogenic E. coli (EPEC) and EHEC. Disease severity during infection with C. rodentium is dependent on host genetics. Whilst C. rodentium pathogenesis has been well characterised in the C57BL/6 mouse model, which exhibits mild self-limiting disease, less is known about infection in C3H/HeNCrl mice, which exhibit severe fatal colitis. To characterise C. rodentium infection in C3H/HeNCrl mice and elucidate the contribution of the multifunctional T3SS effector protein Map, in vivo monitoring and -omics techniques were employed. C. rodentium infection signatures were accelerated in C3H/HeNCrl mice with uniform colonisation of the colonic mucosa observed by 3 days post infection. The presence of either Map or EspF effectors was demonstrated to be essential for colonisation. In addition, a Map-dependent increase in colonic oxygenation upon infection was observed, likely due to Map-induced mitochondrial disruption. Global proteomic analysis of infection-induced changes in intestinal epithelial cells revealed a switch from mitochondrial metabolism to aerobic glycolysis and lactate fermentation characterised by higher abundance of SGLT4, LDHA and MCT4. In contrast to C57BL/6 mice, the pattern recognition receptors NLRP3 and ALPK1 were specifically induced in C3H/HeNCrl from 6 DPI at the transcriptional and translational level. Activation the ALPK1/TIFA axis, was demonstrated following in vitro infection of a TIFA-reporter cell line with C. rodentium. Activation was dependent on the ADP-heptose biosynthesis pathway, but independent of a functional T3SS. Together, this study reveals temporal IECs’ responses during severe infectious colitis including changes to cellular replication, innate immunity and metabolism.
VWF-dependent platelet ‘priming’ potentiates novel leukocyte interactions and mediates NETosis under flow
Creators: name: Constantinescu-Bercu, Adela
Publisher: name: Imperial College London
Year: 2019

description: Platelet-leukocyte interactions are important in diverse pathophysiological settings from infection to DVT. Previously characterised interactions require robust activation of platelets (e.g. via P-selectin) and/or leukocytes (e.g. via certain β2-integrins). However, recent studies reveal that platelets captured by von Willebrand factor (VWF) under flow can acquire the ability to bind leukocytes. I hypothesised that, under flow, VWF ‘primes’ platelets, in turn facilitating an uncharacterised platelet-leukocyte interaction. My aim was to characterise the interaction between VWF-‘primed’ platelets and leukocytes under flow. Using microfluidic assays, I demonstrated that, under flow, binding of platelets to the VWF A1 domain causes intracellular Ca2+-release and αIIbβ3 activation. VWF-‘primed’ platelets captured neutrophils and T-cells (but not monocytes and B-cells) under low shear. Leukocyte binding was independent of P-selectin and β2-integrins, but significantly reduced by αIIbβ3 blockade, and was enhanced in regions of turbulent flow. Bound neutrophils underwent Ca2+-release and formed neutrophil extracellular traps (NETs), in a Ca2+, NADPH-oxidase and shear-dependent manner. The neutrophil receptor was identified as SLC44A2 through differential gene expression analysis using RNA-sequencing data from the Blueprint consortium. Neutrophils and SLC44A2-transfected HEK293T cells bound activated αIIbβ3, in a manner that was inhibited by blocking the first extracellular loop of SLC44A2. A SNP in SLC44A2 (rs2288904-G/A, M.A.F.-0.22) encoding the R154Q substitution was recently shown to be protective against DVT. Neutrophils homozygous for SLC44A2 rs2288904-A and SLC44A2(R154Q)-transfected HEK293T cells exhibited a significant reduction in the ability to bind VWF-‘primed’ platelets. Platelets from a novel transgenic mouse (GpIbasig/sig) exhibit a decreased ability to become ‘primed’ by VWF and recruit neutrophils under flow. Taken together, these data reveal a previously unreported interaction between platelets and neutrophils, while providing novel mechanistic insights into platelet-mediated NET formation and into the protective effect of the SLC44A2 rs2288904-A polymorphism in venous thrombosis.
The acute effect of food structure on post prandial glucose and subsequent metabolic responses
Creators: name: AlShaalan, Rasha
Publisher: name: Imperial College London
Year: 2019

description: Glucose is a major molecule for energy supply. Thus, the movement of glucose from food into tissues is necessary for survival. However, since high levels of glucose are toxic to the body, glucose homeostasis plays a key role in preventing a number of diseases, including type 2 diabetes, obesity, coronary heart disease and many types of cancer. Empirical evidence has shown that postprandial glucose and insulin sensitivity are not only governed by the content of food but also by other factors that may play a role in the digestive process, including food structure, rheological properties and food breakdown pattern. The combination of different levels of structure—from the molecular to the micro and macro levels—develops the rheological behavior of food that impacts the availability and digestibility of nutrients. In this work, I brought together nutritional physiology and rheology to explore the impact of peas and chickpeas on postprandial glycaemia and to develop a better understanding of how their physical properties change the physiological response. This in turn will give insight into the effect of food structure and its rheological properties on postprandial metabolic responses. The main finding of this work highlighted the importance of an intact cell wall in lowering postprandial glycaemia and subsequent metabolic responses when compared to a ruptured structure. Also, this work showed that starch structure played a role in postprandial glycaemia and insulinemia when the cell wall is absent. Further investigation was performed on the rheological properties of foods with different structures, relating these results with metabolic responses. Results from studies assessing the rheological and mechanical properties of food strongly suggested that they indeed affect the food breakdown pattern during digestion. It was shown that an intact structure’s rheological properties slowed the breakdown of food during digestion. Also, different intact structures had different rheological properties that suggested an impact on the food’s behaviour during digestion and hence on postprandial metabolic responses. Throughout this thesis, an indirect relation between food structure, its rheological properties, food breakdown during digestion in relation to postprandial glycaemia and related metabolic responses was realised.
Aggregation models on hypergraphs
Creators: name: Alberici, Diego
name: Contucci, Pierluigi
name: Mingione, Emanuele
name: Molari, Marco
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: 82B05

description: Following a newly introduced approach by Rasetti and Merelli we investigate the possibility to extract topological information about the space where interacting systems are modelled. From the statistical datum of their observable quantities, like the correlation functions, we show how to reconstruct the activities of their constitutive parts which embed the topological information. The procedure is implemented on a class of polymer models on hypergraphs with hard-core interactions. We show that the model fulfils a set of iterative relations for the partition function that generalise those introduced by Heilmann and Lieb for the monomer-dimer case. After translating those relations into structural identities for the correlation functions we use them to test the precision and the robustness of the inverse problem. Finally the possible presence of a further interaction of peer-to-peer type is considered and a criterion to discover it is identified.
description: Improved version, 12 pages, 5 figures
Australian foreign aid to China, under Labor, 1983-1996
Creators: name: Pase-Taneja, Lucia.
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.
Stationary Scalar Clouds Around Maximally Rotating Linear Dilaton Black Holes
Creators: name: Tokgoz, G.
name: Sakalli, I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the wave dynamics of a charged massive scalar field propagating in a maximally rotating (extremal) linear dilaton black hole geometry. We prove the existence of a discrete and infinite family of resonances describing non-decaying stationary scalar configurations (clouds) enclosing these rapidly rotating black holes. The results obtained signal the potential stationary scalar field distributions (dark matter) around the extremal linear dilaton black holes. In particular, we analytically compute the effective heights of those clouds above the center of the black hole.
description: Accepted for publication in Classical and Quantum Gravity
Identifying a new particle with jet substructures
Creators: name: Han, Chengcheng
name: Kim, Doojin
name: Kim, Minho
name: Kong, Kyoungchul
name: Lim, Sung Hak
name: Park, Myeonghun
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We investigate a potential of measuring properties of a heavy resonance X, exploiting jet substructure techniques. Motivated by heavy higgs boson searches, we focus on the decays of X into a pair of (massive) electroweak gauge bosons. More specifically, we consider a hadronic Z boson, which makes it possible to determine properties of X at an earlier stage. For $m_X$ of O(1) TeV, two quarks from a Z boson would be captured as a "merged jet" in a significant fraction of events. The use of the merged jet enables us to consider a Z-induced jet as a reconstructed object without any combinatorial ambiguity. We apply a conventional jet substructure method to extract four-momenta of subjets from a merged jet. We find that jet substructure procedures may enhance features in some kinematic observables formed with subjets. Subjet momenta are fed into the matrix element associated with a given hypothesis on the nature of X, which is further processed to construct a matrix element method (MEM)-based observable. For both moderately and highly boosted Z bosons, we demonstrate that the MEM with current jet substructure techniques can be a very powerful discriminator in identifying the physics nature of X. We also discuss effects from choosing different jet sizes for merged jets and jet-grooming parameters upon the MEM analyses.
description: 36 pages, 11 figures, published in JHEP
The urinary metabonome in lower urinary tract symptoms
Creators: name: Bray, Rhiannon
Publisher: name: Imperial College London
Year: 2019

description: BACKGROUND: Lower urinary tract symptoms (LUTS), including urinary incontinence, urgency and nocturia, affect approximately half of women worldwide. Despite their prevalence, the underlying mechanisms causal of LUTS are poorly understood, which is likely a reflection of a multifactorial aetiology. Current diagnostic methods for LUTS are invasive and costly, while available treatments are limited by side effects leading to poor patient compliance. As a result, much recent research has been directed toward identifying novel, non-invasive biomarkers that have strong diagnostic and prognostic value. However, the majority of those identified lack specificity or have minimal prognostic benefit. Metabonomics is the quantitative assessment of metabolites and small molecule changes involved in biochemical processes thereby offering a direct assessment of system and local metabolic status. AIM: In this study, we aimed to identify urine metabolic signatures associated with LUTS using proton nuclear magnetic resonance (1H-NMR) spectroscopy and to assess whether profiling and/ or subsequent multivariate analysis would be useful to characterise metabolic perturbations associated with individual lower urinary tract symptoms and overactive bladder. METHODS: Women attending urogynaecology and gynaecology clinics completed the validated International Consultation on Incontinence – Female Lower Urinary Tract Symptoms Questionnaire. Asymptomatic control patients were defined as those with normal scores for bladder pain and all storage and incontinence symptom items. Participants provided midstream urine samples and metabolic profiles were acquired using 1H-NMR. Resulting spectral data were assessed using a combination of unsupervised and supervised multivariatemodelling techniques with discriminatory metabolites identified using 1D- and 2Ddimensional NMR based approaches. RESULTS: A total of 214 urine samples were collected from women attending tertiary urogynaecology clinics (cases; n=176) and healthy control women attending general gynaecology clinics (n=36). High variation in the urine metabolome was observed across the cohort however analysis of the data using the KODAMA (knowledge discovery by accuracy maximization) algorithm identified associations between urine metabolic profiles and BMI, parity, overactive bladder syndrome, frequency, straining and bladder storage. Partition around menoids clustering of the KODAMA data identified four urinary metabotypes, one of which was associated with increased urinary frequency and decreased BMI. CONCLUSION: Our study suggests that metabolic profiling of urine samples from LUTS patients offers the potential to identify differences in underlying aetiology, which may permit stratification of patient populations and the design of more personalized treatment strategies.
Microplastic pollution in the estuarine and river environment of the River Thames, UK
Creators: name: Devereux, Ria
Publisher: name: University of East London
Year: 2023

description: Microplastic pollution is ubiquitous globally and is considered a leading threat to ecosystems. As microplastic studies increase, key areas remain understudied, such as rivers, with new areas and sources of microplastics still being discovered. The overall aim of this thesis is to investigate the abundance of microplastics within the tidal river Thames, UK and identify potential sources of microplastics. In this thesis, I assess the current literature on microplastics, identify potential research gaps within current known knowledge, and show the range of laboratory methods used in studies worldwide to identify and quantify microplastic abundance within the environment. Through surface water samples collected along the river Thames from May 2019 -May 2021, I demonstrate that microplastics are present within the river Thames and vary between sites and samples, as well as identifying potential sources. I highlight how seasonality and rainfall impact microplastic abundance within this river system. During this study, the Covid -19 pandemic occurred, proving a unique sampling opportunity. As a result, this thesis acknowledges that this pandemic may have impacted microplastic abundance and provides valuable information on the short-term impacts of the pandemic on microplastic within this time. Finally, I highlight the effects of the New Year fireworks displays on microplastic abundance within water samples collected from the river Thames at Westminster. This data is novel as it had not previously been noted or identified when this study was published. The data and results presented within this thesis provide valuable information on the abundance, possible sources and accumulation of microplastics along the river Thames that can be used as a baseline for future studies. This data and results can also be used by stakeholders such as the Environment Agency, Thames Water and non-profit organisations to inform possible decisions on the removal of microplastic pollution from the river.
The subversions of Barbara Alberti in Povera bambina and Vangelo secondo Maria
Creators: name: Ferré, Nathalie Patricia.
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.
Experimental studies of transient and limit cycle thermoacoustic oscillations in a lean premixed swirl stabilized combustor
Creators: name: Karlis, Efstathios
Publisher: name: Imperial College London
Year: 2019

description: The lean premixed mode of operation of gas turbine combustors has been developed as a means of meeting the NO$_{x}$ emission reduction regulatory requirements. However, this technology is inherently susceptible to triggering of thermoacoustic instabilities, wherein the thermal and the acoustic field couple into a self amplification feedback loop that eventually results in the establishment of high amplitude dynamic pressure and heat release rate oscillations, a dynamic state termed limit cycle. Despite lengthy research efforts, it has not been possible to fully identify the reason behind the triggering events leading to the establishment of thermoacoustic instabilities. The thesis aims to increase the understanding of the combustion phenomena involved in the triggering and the perpetuation of these instabilities. Experiments are conducted in a model swirl stabilized combustor, burning premixtures of air with methane, propane and blends of hydrogen enriched methane. The operational conditions feature lean equivalence ratios at turbulent Reynolds numbers. The silica windows of the model combustor grant optical access to a highly confined swirl stabilized flame. High speed CH$^*$ chemiluminescence imaging and Particle Image Velocimetry and low speed OH Planar Laser Induced Fluorescence are employed, in conjunction with non linear analysis, proper orthogonal decomposition and dynamic mode decomposition. The analysis shows that upon increasing the resistance of a mixture to extinction either by enriching the equivalence ratio or by increasing the hydrogen molar concentration, the transition from quiescence into limit cycle Period-1 thermoacoustic oscillations is presaged by intermittent high amplitude bursts of dynamic pressure and heat release rate, due to a subcritical Hopf bifurcation. The intermittent bursts are attributed to the interaction of the flame with the Precessing Vortex Core (PVC). The limit cycle is perpetuated due to oscillations of the flow imposed strain rate, causing periodic local extinction of the flame at the root close to the centerbody. The relative ratio of the flow imposed over the mixture extinction strain rate dictates the limit cycle flame anchoring topologies, which in turn affect whether the PVC is excited or suppressed during the limit cycle regime. When excited, the PVC is responsible for a period doubling limit cycle bifurcation, wherein the PVC time scale is superimposed on the fundamental acoustic time scale. The flame front curvature, extracted via OH Planar Laser Induced Fluorescence, indicates that the flame becomes more wrinkled during a high amplitude burst. The findings also suggest that the limit cycle oscillations are reflected on the flame front curvature, with the extent of flame wrinkling being commensurate with the heat release rate.
Scattering processes in quantum dot devices with the example of an amplifier
Creators: name: Dommers, Sabine
Publisher: name: Technische Universität Dortmund
Year: 2010
Subjects: subject: SOA
subject: Scattering
subject: Quantum dot
subject: Semiconductor optical amplifier
subject: 530

description: All experiments performed in this work deal with a device that is a quantum dot based semiconductor optical amplifier. This chapter explains why especially InAs quantum dots in a waveguide were chosen to perform them. In addition all basics necessary to understand the experimental methods, the setup and the models will be described. The first section will deal with semiconductors and the special terminology used for describing them. After that the advantages of quantum dots in comparison to other semiconductor nanostructures are clarified. In the third section the device itself is focused, the Semiconductor Optical Amplifier (SOA) and its characteristics. First the design will be discussed then the optical characteristics. The performed experiments are described in detail in the fourth section of this chapter. Both the technical setup and the used methods will be explained. This sections is completed with a first characterization of the sample. At last I introduce the theory necessary for following the models used in chapter 4 and 5 of this thesis.
'Pro deo et patria' : responses adopted by members of the Australian Student Christian Movement to the coming of World War II
Creators: name: Yule, Jane.
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.
Evidence for strong lattice effects as revealed from huge unconventional oxygen isotope effects on the pseudogap temperature in La$_{2-x}$Sr$_{x}$CuO$_{4}$
Creators: name: Bendele, M.
name: von Rohr, F.
name: Guguchia, Z.
name: Pomjakushina, E.
name: Conder, K.
name: Bianconi, A.
name: Simon, A.
name: Bussmann-Holder, A.
name: Keller, H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The oxygen isotope ($^{16}$O/$^{18}$O) effect (OIE) on the pseudogap (charge-stripe ordering) temperature $T^{\ast}$ is investigated for the cuprate superconductor La$_{2-x}$Sr$_{x}$CuO$_{4}$ as a function of doping $x$ by means of x-ray absorption near edge structure (XANES) studies. A strong $x$ dependent and sign reversed OIE on $T^{\ast}$ is observed. The OIE exponent $α_{T^{\ast}}$ systematically decreases from $α_{T^{\ast}} = - 0.6(1.3)$ for $x = 0.15$ to $α_{T^{\ast}} = - 4.4(1.1)$ for $x = 0.06$, corresponding to increasing $T^{\ast}$ and decreasing superconducting transition temperature $T_{c}$. Both $T^{\ast}(^{16}{\rm O})$ and $T^{\ast}(^{18}{\rm O})$ exhibit a linear doping dependence with different slopes and critical end points (where $T^{\ast}(^{16}{\rm O})$ and $T^{\ast}(^{18}{\rm O})$ fall to zero) at $x_{c}(^{16}{\rm O}) = 0.201(4)$ and $x_{c}(^{18}{\rm O}) = 0.182(3)$, indicating a large positive OIE of $x_{c}$ with an exponent of $α_{x_{c}} = 0.84(22)$. The remarkably large and strongly doping dependent OIE on $T^{\ast}$ signals a substantial involvement of the lattice in the formation of the pseudogap, consistent with a polaronic approach to cuprate superconductivity and the vibronic character of its ground state.
Enantiodromic effective generators of a Markov jump process with Gallavotti-Cohen symmetry
Creators: name: Terohid, S. A. A.
name: Torkaman, P.
name: Jafarpour, F. H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This paper deals with the properties of the stochastic generators of the effective (driven) processes associated with atypical values of transition-dependent time-integrated currents with Gallavotti-Cohen symmetry in Markov jump processes. Exploiting the concept of biased ensemble of trajectories by introducing a biasing field $s$, we show that the stochastic generators of the effective processes associated with the biasing fields $s$ and $E-s$ are enantiodromic with respect to each other where $E$ is the conjugated field to the current. We illustrate our findings by considering an exactly solvable creation-annihilation process of classical particles with nearest-neighbor interactions defined on a one-dimensional lattice.
description: Major revision, Accepted for publication in PRE
Australia's return of the Indonesian exiles : the voyage of the Esperance Bay, October-November 1945
Creators: name: Bennett, Frank
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.
Wildfire Smoke Clean Air Centers: Identifying Barriers and Opportunities for Improvement from California Practitioner and Community Perspectives
Creators: name: Treves, Ryan
Publisher: name: Stanford Digital Repository
Year: 2022
Subjects: Air quality, community-based research, cleaner air space, clean air center, community resilience, clean air shelter, wildfire smoke

description: As wildfire risk is projected to increase across most of the world, exposure to wildfire smoke is a growing global health issue. Clean air centers (CACs), public buildings designated to provide improved air quality to the public during a wildfire smoke event, have emerged as a community-oriented public health response to smoke. Some experts see CACs as the most effective way to reduce population exposure to wildfire smoke. Yet how and why smoke-vulnerable groups utilize CACs, as well as how CACs may be improved to meet their needs, is not well understood. Here, I explore these questions through exploratory interviews with two groups of stakeholders in California CAC development: practitioners and members of a community vulnerable to wildfire smoke. My findings suggest that a gap remains between California’s CACs and the needs of vulnerable groups. By comparing community and practitioner perspectives, I identify opportunities to close this gap.
Fusion basis for lattice gauge theory and loop quantum gravity
Creators: name: Delcamp, Clement
name: Dittrich, Bianca
name: Riello, Aldo
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We introduce a new basis for the gauge-invariant Hilbert space of lattice gauge theory and loop quantum gravity in $(2+1)$ dimensions, the fusion basis. In doing so, we shift the focus from the original lattice (or spin-network) structure directly to that of the magnetic (curvature) and electric (torsion) excitations themselves. These excitations are classified by the irreducible representations of the Drinfel'd double of the gauge group, and can be readily "fused" together by studying the tensor product of such representations. We will also describe in detail the ribbon operators that create and measure these excitations and make the quasi-local structure of the observable algebra explicit. Since the fusion basis allows for both magnetic and electric excitations from the onset, it turns out to be a precious tool for studying the large scale structure and coarse-graining flow of lattice gauge theories and loop quantum gravity. This is in neat contrast with the widely used spin-network basis, in which it is much more complicated to account for electric excitations, i.e. for Gauß~constraint violations, emerging at larger scales. Moreover, since the fusion basis comes equipped with a hierarchical structure, it readily provides the language to design states with sophisticated multi-scale structures. Another way to employ this hierarchical structure is to encode a notion of subsystems for lattice gauge theories and $(2+1)$ gravity coupled to point particles. In a follow-up work, we will exploit this notion to provide a new definition of entanglement entropy for these theories.
description: 72 pages
Cardiac microdomains in cyclic nucleotide signalling in mouse atrial cardiomyocytes: role of the caveolar compartments and popeye proteins
Creators: name: Bhogal, Navneet Kaur
Publisher: name: Imperial College London
Year: 2019

description: Transverse axial tubules (TAT) and caveolae are essential structural microdomains in cardiomyocytes that recruit components of various signalling pathways. Of particular interest, β- adrenergic receptors (β-ARs) are localised to these structures and in response to catecholamines elicit compartmentalised cyclic adenosine 3′,5′-monophosphate (cAMP) signals. Both Popeye domain-containing (POPDC) and Caveolin-3 (CAV3) proteins are localised to these membrane compartments. POPDC1 is a CAV3-interacting protein, and the Popeye domain acts as a highaffinity cAMP binding site. The function of these proteins in atrial myocytes (AMs) remains elusive. This study has investigated whether AMs isolated from CAV3 and POPDC null mutants display an altered TAT structure and aberrant cAMP response. The TAT structure was investigated in AMs isolated from the left and right atria of CAV3-/- and Popdc1-/- mice. In both mutants, the TAT structure of AMs originating from the right atria were stronger affected than from the left. cAMP compartmentation was studied with the help of a transgenic FRET sensor. In response to β2-AR-stimulation, phosphodiesterase (PDE) 4 is critical compared to PDE3 for cAMP compartmentation. To understand how changes in TAT structure and cAMP signalling might alter atrial function, sinoatrial pacemaking and atrial conduction were studied in Popdc1-/- and Popdc2-/- isolated atrial tissues. Both mutants demonstrated abnormal pacemaker activity, associated with depressed sinoatrial pacemaking, enhanced ectopy and tachycardia-bradycardia arrhythmias increasing HR lability in response to β-AR stimulation. Additionally, Popdc1-/- displayed slower atrial conduction, increased fibrosis and downregulated connexin-43 expression. Along with the altered fast sodium current and the elevated late sodium current, these facilitated the development of atrial tachyarrhythmias in Popdc1-/- mutants. These data suggest that Cav3-/- and Popdc1-/- mutants are associated with structural changes resulting in aberrant cAMP compartmentation, which may result in an increased risk of developing atrial arrhythmogenesis.
Termination of Cycle Rewriting by Transformation and Matrix Interpretation
Creators: name: Sabel, David
name: Zantema, Hans
Publisher: name: arXiv
Year: 2016
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.4.2

description: We present techniques to prove termination of cycle rewriting, that is, string rewriting on cycles, which are strings in which the start and end are connected. Our main technique is to transform cycle rewriting into string rewriting and then apply state of the art techniques to prove termination of the string rewrite system. We present three such transformations, and prove for all of them that they are sound and complete. In this way not only termination of string rewriting of the transformed system implies termination of the original cycle rewrite system, a similar conclusion can be drawn for non-termination. Apart from this transformational approach, we present a uniform framework of matrix interpretations, covering most of the earlier approaches to automatically proving termination of cycle rewriting. All our techniques serve both for proving termination and relative termination. We present several experiments showing the power of our techniques.
description: 38 pages, 1 figure
The Software Atom
Creators: name: Javanainen, Juha
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By putting together an abstract view on quantum mechanics and a quantum-optics picture of the interactions of an atom with light, we develop a corresponding set of C++ classes that set up the numerical analysis of an atom with an arbitrary set of angular-momentum degenerate energy levels, arbitrary light fields, and an applied magnetic field. As an example, we develop and implement perturbation theory to compute the polarizability of an atom in an experimentally relevant situation.
description: close to published version
The George Hotel, St. Kilda : a narrative history
Creators: name: Upton, Gillian.
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.
Effects of Physical Activity on Wellbeing among Children with ADHD A Mediation by Self-Esteem.
Creators: name: ShafaeianFard, Fourogh
name: Baniasadi, Tayebeh
name: Soltan Ahmadi, Tina
name: Biyabanid, Pouya
name: Khajeaflaton Mofrad, Sedigheh
Publisher: name: figshare
Year: 2022
Subjects: subject: 110603 Motor Control
subject: FOS: Health sciences
subject: 170114 Sport and Exercise Psychology
subject: FOS: Psychology

description: Purpose: It has been shown that physical activity positively affects wellbeing of children and adolescents. However, this issue has rarely been investigated among special groups such as ADHD. Therefore, the aim of this study was to evaluate the effects of physical activity level on physical and psychological wellbeing of children with ADHD with the mediating role of self-esteem. Method: children aged 9 to 11 years old attended in special school for children with ADHD participated in this study. Physical activity, wellbeing, and self-esteem were measured by using standard questionnaires. Structural equation modelling was used to analyze data. Results: On average, level of children’ physical activity, wellbeing, and self-esteem were lower than the average. Physical activity positively affected physical and psychological wellbeing as well as self-esteem among children with ADHD. Moreover, self-esteem can be considered as a plausible mechanism for the relationship between physical activity and wellbeing. Conclusion: These findings, together, indicate that physical activity and wellbeing are critical concerns for children with ADHD. Accordingly, it is necessary to adopt appropriate strategies to increase the level of physical activity among children with ADHD.
The English/foreign dialectic in Trollope's fiction
Creators: name: Hopkins, Margery.
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.
Light quark Yukawa couplings from Higgs kinematics
Creators: name: Soreq, Yotam
name: Zhu, Hua Xing
name: Zupan, Jure
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the normalized Higgs production $p_T$ and $y_h$ distributions are sensitive probes of Higgs couplings to light quarks. For up and/or down quark Yukawa couplings comparable to the SM $b$ quark Yukawa the $\bar u u$ or $\bar d d$ fusion production of the Higgs could lead to appreciable softer $p_T$ distribution than in the SM. The rapidity distribution, on the other hand, becomes more forward. We find that, owing partially to a downward fluctuation, one can derive competitive bounds on the two couplings using ATLAS measurements of normalized $p_T$ distribution at 8\,TeV. With 300 fb${}^{-1}$ at 13\,TeV LHC one could establish flavor non-universality of the Yukawa couplings in the down sector.
description: 15 pages, 7 figures; v2: add clarifications, plot and refs. conclusion unchanged; v3: matched to the published version