cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Shrestha_et_al_2019_mech_CST.txt
Creators: name: Shrestha, Krishna Prasad
Publisher: name: figshare
Year: 2019
Subjects: subject: 30703 Reaction Kinetics and Dynamics
subject: FOS: Chemical sciences
subject: 30601 Catalysis and Mechanisms of Reactions

description: This work presents a newly developed kinetic mechanism for the oxidation of methanol and ethanol and their fuel interaction with NOx (NO and NO2) chemistry in jet-stirred and flow reactors, freely propagating and burner-stabilized premixed flames, as well as shock tubes. A number of published experiments have been selected to demonstrate that important features of the CH3OH/NOx and C2H5OH/NOx chemistry are well captured by the here derived, broadly validated reaction mechanism.This work is the supplementary material to the work: Kinetic Modeling of NOx Formation and Consumption during Methanol and Ethanol Oxidation. https://www.tandfonline.com/eprint/WndQviqVZANeKVQthbBt/full?target=10.1080/00102202.2019.1606804
Annotation results of Bar-headed goose genome
Creators: name: Wang, Wen
Publisher: name: figshare
Year: 2019
Subjects: subject: 60802 Animal Cell and Molecular Biology
subject: FOS: Biological sciences

description: We provide the annotation results of repeated sequences, gene structure, non-coding RNAs and functional prediction for the de novo assembled genome of Bar-headed goose.
Solvable Optimal Velocity Models and Asymptotic Trajectory
Creators: name: Nakanishi, K.
name: Itoh, K.
name: Igarashi, Y.
name: Bando, M.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: In the Optimal Velocity Model proposed as a new version of Car Following Model, it has been found that a congested flow is generated spontaneously from a homogeneous flow for a certain range of the traffic density. A well-established congested flow obtained in a numerical simulation shows a remarkable repetitive property such that the velocity of a vehicle evolves exactly in the same way as that of its preceding one except a time delay $T$. This leads to a global pattern formation in time development of vehicles' motion, and gives rise to a closed trajectory on $Δx$-$v$ (headway-velocity) plane connecting congested and free flow points. To obtain the closed trajectory analytically, we propose a new approach to the pattern formation, which makes it possible to reduce the coupled car following equations to a single difference-differential equation (Rondo equation). To demonstrate our approach, we employ a class of linear models which are exactly solvable. We also introduce the concept of ``asymptotic trajectory'' to determine $T$ and $v_B$ (the backward velocity of the pattern), the global parameters associated with vehicles' collective motion in a congested flow, in terms of parameters such as the sensitivity $a$, which appeared in the original coupled equations.
description: 25 pages, 15 eps figures, LaTeX
Navigating around Obstacles in Euclidean Space with Ray Casting
Creators: name: HECHENBERGER, RYAN
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 490304
subject: Optimisation
classificationCode: 461305
subject: Data structures and algorithms

description: This thesis studies navigation around objects in a 2-dimensional environment in real time. This type of environment is suited to representing objects, especially ones subject to moving in real-time applications, such as video games and robotics. This thesis contributes methods that finds paths on highly dynamic environments in real time without compromising on path length.
Speed-up and multi-view extensions to Subclass Discriminant Analysis
Creators: name: Chumachenko, Kateryna
name: Raitoharju, Jenni
name: Iosifidis, Alexandros
name: Gabbouj, Moncef
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In this paper, we propose a speed-up approach for subclass discriminant analysis and formulate a novel efficient multi-view solution to it. The speed-up approach is developed based on graph embedding and spectral regression approaches that involve eigendecomposition of the corresponding Laplacian matrix and regression to its eigenvectors. We show that by exploiting the structure of the between-class Laplacian matrix, the eigendecomposition step can be substituted with a much faster process. Furthermore, we formulate a novel criterion for multi-view subclass discriminant analysis and show that an efficient solution for it can be obtained in a similar to the single-view manner. We evaluate the proposed methods on nine single-view and nine multi-view datasets and compare them with related existing approaches. Experimental results show that the proposed solutions achieve competitive performance, often outperforming the existing methods. At the same time, they significantly decrease the training time.
description: accepted to Pattern Recognition
Visualisation of non-manifold implicit surfaces
Creators: name: Harbinson, Dirk
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 490402
subject: Algebraic and differential geometry

description: This thesis addresses several visualisation problems for non-manifold and singular implicit algebraic surfaces and proposes algorithms for fast and correct rendering of many such surfaces. It is well known that non-manifold surfaces are particularly difficult to render and hence these algorithms provide interesting perspectives in rendering these surfaces. A main contribution is a GPU algorithm for point-based rendering of implicit surfaces. This algorithm is based on a hierarchical decomposition of the bounding volume using an octree spatial data structure and testing the occupied cells of the octree through interval arithmetic. Previous work had difficulty in rendering the non-manifold and singular features. The work also presents point-based anti-aliasing of silhouette and contour edges. The second contribution is a GPU hybrid polygon and point-based rendering algorithm. Previous work using polygons alone could not represent the non-manifold and singular features. The third contribution is an algorithm for visualisation of curvature surfaces of implicit surfaces. A robust visualisation of curvature surfaces is presented here for the first time. A DVD is enclosed showing animations created using the discussed methods. Even though Computer Aided geometric Design (CAD) uses predominately parametric surfaces, implicit surfaces are also used in this area as blending and offset surfaces in CAD are often implicit surfaces. Curvature analysis is also used extensively in the aeronautical and automotive manufacturing industries.
Latilactobacillus curvatus Zheng, Wittouck, Salvetti, Franz, Harris, Mattarelli, O'Toole, Pot, Vandamme, Walter, Watanabe, Wuyts, Felis, Gänzle & Lebeer, 2020, COMB. NOV.
Creators: name: Zheng, Jinshui
name: Wittouck, Stijn
name: Salvetti, Elisa
name: Franz, Charles M. A. P.
name: Harris, Hugh M. B.
name: Mattarelli, Paola
name: O'Toole, Paul W.
name: Pot, Bruno
name: Vandamme, Peter
name: Walter, Jens
name: Watanabe, Koichi
name: Wuyts, Sander
name: Felis, Giovanna E.
name: Gänzle, Michael G.
name: Lebeer, Sarah
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Bacteria
Firmicutes
Bacilli
Lactobacillales
Lactobacillaceae
Latilactobacillus
Latilactobacillus curvatus

description: DESCRIPTION OF LATILACTOBACILLUS CURVATUS COMB. NOV.
 Latilactobacillus curvatus (cur.va′ tus. L. masc. adj. curvatus curved).
 Basonym: Lactobacillus curvatus (Bacterium curvatum Troili-Petersson 1903, 137) Abo-Elnaga and Kandler 1965; Troili-Petersson 1980 (Approved Lists); emend. Klein et al. 1996 Some L. curvatus strains are motile [184]; they occur in pairs, short chains, and frequently in horseshoe forms. Characteristics of the species are provided by [170, 180, 185]. The genome size of the type strain is 1.82 Mbp. The mol% G+C content of DNA is 42.0.
Isolated from cow dung, fermented and vacuum-packaged refrigerated meat and fish products, dairy products such as milk and cheese, fermented plant products like sauerkraut, sourdough (including prepacked finished dough and pressed yeast), radish, pickles and kimchi, other plantderived materials like honey and from the environmental fermentation process of corn or grass silage [186].
 The type strain is 1 T = LMG 9198 T = DSM 20019 T = LMG 13553 T = ATCC 25601 T = CCUG 30669 T = CIP 102992 T = IFO (now NBRC) 15884 T = JCM 1096 T = NRRL B-4562 T.
Genome sequence accession number: AZDL00000000.
16S rRNA gene accession number: AM 113777.
description: Published as part of Zheng, Jinshui, Wittouck, Stijn, Salvetti, Elisa, Franz, Charles M. A. P., Harris, Hugh M. B., Mattarelli, Paola, O'Toole, Paul W., Pot, Bruno, Vandamme, Peter, Walter, Jens, Watanabe, Koichi, Wuyts, Sander, Felis, Giovanna E., Gänzle, Michael G. & Lebeer, Sarah, 2020, A taxonomic note on the genus Lactobacillus: Description of 23 novel genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae, pp. 2782-2858 in International Journal of Systematic and Evolutionary Microbiology 70 (4) on page 2816, DOI: 10.1099/ijsem.0.004107, http://zenodo.org/record/10114954
title: Queer Youth in Straight Spaces: Tactics of Survival
Creators: name: Buttigieg, Bob
Publisher: name: Griffith University
Year: 2018
Subjects: subject: Queer people
subject: Autoethnographic stories
subject: Surviving heterosexed public
subject: Dehumanisation
subject: Counter-hegemonic

description: This thesis draws from interviews conducted between late-2012 and mid-2013 as an ‘intimate insider’ (Taylor 2011) with twenty one young queer people living on the Gold Coast, Australia, at the time we spoke. It also draws from my own autoethnographic stories about growing up queer on the Gold Coast. Through these stories of self and others, I map out shared and unique experiences of youth, queerness, and the local setting of the city of Gold Coast, in order to identify and interrogate ‘tactics’ – in de Certeau’s (1984) sense – of survival: everyday means of ‘getting by’ in spaces that are ordered (built, controlled) by dominant forms of power (viz. ‘strategies’). These tactics provide a window into the effects and affects produced in/on young queer people by heterosexed public space and by those individuals and institutions that underwrite and authorise explicit and implicit forms of violence against us. The collection of survival tactics compiled herein, which is neither complete nor authoritative (due to the nature of tactics as products of necessity and creativity), is also in a sense an ‘instruction manual’ for young queer people who might read this thesis and draw inspiration from these everyday means of getting by, to develop their own tactics of survival. Emerging as central to my mapping of tactics are the multiple forms of friendship engaged in and developed by my participants and by me, which serve as key providers of resources in the ongoing task of survival. Collecting stories about surviving heterosexed public space and the strategies that order it is only half of the task: the final two chapters of this thesis are dedicated to means of challenging the dominant forms of power – those strategies – which impel such tactics in the first place. Dehumanisation is identified as the process underlying many instances of anti-queer rhetoric and violence, and the dual endeavours of education about and visibility for young queer people are proposed as means to produce counter-hegemonic discourses that undermine the dehumanising process. Ultimately, continuing to live, and doing so as we want, is suggested as a political task for young queer people that poses a direct challenge to heteronormative power. In this way, by becoming ‘examples’ in Agamben’s (1993) sense of the word, grounds on which we can cleave together in our simultaneous similarity and difference is produced, from which we can mobilise queer political power to improve the lot of all queer people, not just those whose lives align with the dominant, but for their sexuality.
title: Active Droplet Control and Manipulation in Microfluidics
Creators: name: Teo, Adrian J
Publisher: name: Griffith University
Year: 2020
Subjects: subject: Droplet microfluidics
subject: droplet manipulation
subject: methods

description: Droplet microfluidics involves the use of small volumes of fluids dispersed in an immiscible phase to perform multiple functions. Droplet microfluidics brings advantages such as the miniaturization of experiments, portability of devices, efficient use of resources and capabilities for scaling up production. These tools have been finding their use in a broad range of applications, from chemical and biological analysis to optics and information technology. Various types of controls have been developed to enable the manipulation of droplets. These techniques are categorized into passive and active methods. Passive methods only involve the device geometries and the fluid flow. Active techniques on the other hand provide another level of controllability for adjusting droplet parameters, allowing rapid change of droplet parameters within a single experiment. This flexibility enables user to select parameters and subsequent actions on the same device. Particularly, droplet-on-demand systems benefit from these techniques. The aim of this thesis is the development of different active methods for droplet manipulation. The thesis first focuses on three active control methods, pneumatic, acoustic and electric. Firstly, negative pressure is applied for the controlling droplet generation in a device. The novel application of negative pressure directly affects the flow in the microchannel to generate droplets on demand. This control approach, unlike other active approaches eliminates space constraints within the device with no need for external equipment. Next, a new fabrication approach for interdigitated transducers for generating acoustic waves was developed. This approach eliminates the use of expensive fabrication equipment and simplifies fabrication procedures. Acoustic streaming in a droplet was successfully demonstrated with these transducers. Finally, electric methods are used for controls in droplet generation and coalescence. Non-Newtonian droplets are generated through application of the electric field. On-demand coalescence of droplets is also observed using a combination of AC electric field and a micropillar. The new approaches reported in this thesis provide a greater versatility in microfluidics applications. The simpler alternatives suggested here would overcome current limitations of fabrication complexity and large device footprint, allowing microfluidics to be more accessible and easily implemented. The outcome of this thesis contributes to enhancing the uptake of microfluidics in multidisciplinary research and to broadening the user base of this technology.
Inverse Seesaw and Portal Dark Matter
Creators: name: Pongkitivanichkul, Chakrit
name: Thongyoi, Nakorn
name: Uttayarat, Patipan
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the phenomenology of the inverse seesaw mechanism in the scalar-Higgs portal dark matter model. The model is an extension of the Standard Model including two additional neutrinos, a singlet scalar and a fermionic dark matter. We consider the inverse seesaw mechanism where the mass of 2 additional neutrinos are made dynamic by the singlet scalar. We found that the natural scale for the scalar vacuum expectation value is naturally close to the weak scale. Motivating by this fact, we focus on the possibility of the singlet scalar connecting with dark matter, i.e., the scalar is also the mediator between dark sector and the Standard Model. We perform a numerical analysis over the parameter space subject to the indirect and direct detection constraints. The feasible region of the parameter space will be discussed.
description: 9 pages, 5 figures
Cotangent cohomology of rational surface singularities
Creators: name: Altmann, Klaus
name: Stevens, Jan
Publisher: name: arXiv
Year: 1998
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We show that the number of generators of the n-th cotangent cohomology group (n >=2) is the same for all rational surface singularities Y. For a large class of rational surface singularities, including quotient singularities, this number is also the dimension. For them we obtain an explicit formula for the corresponding Poincare series.
description: 14 pages, LaTeX 2e
title: Espacios en disputa
title: Museos nacionales en el Estado Plurinacional de Bolivia
titleType: AlternativeTitle
Creators: name: Rattunde, Naomi
Publisher: name: Abteilung für Altamerikanistik, Universität Bonn
Year: 2022
Subjects: subject: museum
subject: nation state
subject: plurinationality
subject: contact zone
subject: Bolivia
subject: museo
subject: Estado-nación
subject: plurinacionalidad
subject: zona de contacto
subject: ddc:050
subject: ddc:060
subject: ddc:300
subject: ddc:980

description: The reconstitution of Bolivia as a Plurinational State in 2009 had significant consequences for the Bolivian nation’s imagination as pluri-nation. It also had repercussions on the national museums, which are potent spaces for negotiation. This article synthesizes the transformations in those museums that most emblematically represent the tensions between the “pluri” and the “national”: the Museo Nacional de Etnografía y Folklore, the Casa de la Libertad and the Museo de la Revolución Democrática y Cultural.
description: La reconstitución de Bolivia como Estado Plurinacional en 2009 tuvo notables consecuencias para la imaginación de la nación boliviana como pluri-nación y repercutió también en los museos nacionales que son poderosos espacios de negociación. Esa contribución sintetiza las transformaciones en los museos que representan más emblemáticamente las tensiones entre lo “pluri” y lo “nacional”: el Museo Nacional de Etnografía y Folklore, la Casa de la Libertad y el Museo de la Revolución Democrática y Cultural.
First principles gyrokinetic analysis of electromagnetic plasma instabilities
Creators: name: Tronko, Natalia
name: Bottino, Alberto
name: Chandre, Cristel
name: Sonnendrücker, Eric
name: Lanti, Emmanuel
name: Ohana, Noé
name: Brunner, Stephan
name: Villard, Laurent
Publisher: name: arXiv
Year: 2019
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences
subject: 70S05, 97M50, 97M10

description: A two-fold analysis of electromagnetic core tokamak instabilities in the framework of the gyrokinetic theory is presented. First principle theoretical foundations of the gyrokinetic theory are used to explain and justify the numerical results obtained with the global electromagnetic particle-in-cell code Orb5 whose model is derived from the Lagrangian formalism. The energy conservation law corresponding to the Orb5 model is derived from the Noether theorem and implemented in the code as a diagnostics for energy balance and conservation verification. An additional Noether theorem based diagnostics is implemented in order to analyse destabilising mechanisms for the electrostatic and the electromagnetic Ion Temperature Gradient (ITG) instabilities in the core region of the tokamak. The transition towards the Kinetic Ballooning Modes (KBM) at high electromagnetic $β$ is also investigated.
description: 22 pages, 10 Figures, material form the ICPP conference 2018, invited
Method development and application for triazine herbicides analysis in water, soil and sediment samples from KwaZulu-Natal
Creators: name: S. C. Ntombela
name: P. N. Mahlambi
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Molecular Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: This study reports on the development and application of solid phase extraction (SPE) and ultrasonic extraction (UE) methods for the analysis of triazine herbicides in water, soil and sediment samples. The extraction parameters such as conditioning solvent, sample loading volume, eluting solvent, extraction time and sample mass were optimized due to their influence on the extraction efficiency of the analytes. To assess the applicability of the SPE and UE methods, spiked distilled water or soil samples were extracted and analyzed using an LC-PDA instrument. The recoveries obtained under optimum conditions were between 65–94% and 75–100% for SPE and UE, respectively. The relative standard deviations obtained were less than 0.36% for SPE and less than 4.6% for UE. The limit of detection (LOD) ranged from 0.026–0.084 µg/L for SPE and 0.0028–0.0083 mg/kg for UE. The limit of quantification (LOQ) was between 0.088–0.28 µg/L for SPE and 0.0089–0.028 mg/kg for UE. The concentrations of triazines were found to be between 0.96–7.4 µg/L and 0.79–15 µg/L in river water and wastewater effluent samples, respectively. In sediment samples, the triazine concentrations were found to be between 0.032–0.93 mg/kg, while in soil samples they were between 0.12–1.03 mg/kg.
Kenneth J. Arrow - Bibliography from Kenneth Joseph Arrow. 23 August 1921 — 21 February 2017
Creators: name: K. Vela Velupillai
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: 10299 Applied Mathematics not elsewhere classified
subject: FOS: Mathematics

description: Kenneth Arrow was a mathematical economist and political scientist who made many ground-breaking contributions to the theory of economics and social values. His great mathematical ability led him to introduce new approaches to theoretical economics and in particular to a series of fundamental theorems in the discipline. These included the Arrow Impossibility Theorem, the two fundamental theorems of welfare economics and the existence of a competitive equilibrium. For these and many other contributions he was awarded the 1972 Nobel Prize in Economics shared with Sir John Hicks. He took a particular interest in computation and computability in economics. He was active and very productive as a researcher for over seven decades and was renowned as a generous and inspiring teacher and colleague.
Rational Group Decision Making. A random field Ising model at T=0
Creators: name: Galam, Serge
Publisher: name: arXiv
Year: 1997
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A modified version of a finite random field Ising ferromagnetic model in an external magnetic field at zero temperature is presented to describe group decision making. Fields may have a non-zero average. A postulate of minimum inter-individual conflicts is assumed. Interactions then produce a group polarization along one very choice which is however randomly selected. A small external social pressure is shown to have a drastic effect on the polarization. Individual bias related to personal backgrounds, cultural values and past experiences are introduced via quenched local competing fields. They are shown to be instrumental in generating a larger spectrum of collective new choices beyond initial ones. In particular, compromise is found to result from the existence of individual competing bias. Conflict is shown to weaken group polarization. The model yields new psycho-sociological insights about consensus and compromise in groups.
description: 25 pages, latex
Correlation of gene expression and clinical parameters identifies a set of genes reflecting LV systolic dysfunction and morphological alterations
Creators: name: E. Witt
name: E. Hammer
name: M Dörr
name: K Weitmann
name: D Beug
name: K Lehnert
name: M Nauck
name: U Völker
name: SB Felix
name: S Ameling
Publisher: name: figshare
Year: 2019
Subjects: Biomarkers
Diseases

description: Abstract
To gain new insights into the complex pathophysiology of dilated cardiomyopathy (DCM) we performed a quantitative approach to identify genes with expression patterns that linearly correlate with parameters of cardiac morphology (left ventricular end-diastolic diameter indexed by body surface are (LVEDDI), systolic function (LV ejection fraction (LVEF)), and serum levels of cardiac peptide hormone N-terminal pro-brain natriuretic peptide (NT-proBNP) in human endomyocardial biopsies of 47 DCM patients and 8 individuals with normal LVEF. A set of genes was identified as common heart failure markers characterized by correlation of their expression with cardiac morphology, systolic function and NT-proBNP. Among them are already known genes encoding e.g. the natriuretic peptide hormones NPPA and NPPB and its converting enzyme corin, but also potential new HF markers like EP300 antisense RNA1 and dimethylarginine dimethylaminohydrolase 1 (DDAH1) along with other genes with so far unknown relation to heart function. In contrast, the expression of other genes including the Ca2+ flux regulating genes phospholamban (PLN), sarcoplasmic/endoplasmic reticulum calcium ATPase 2 (SERCA), and extracellular matrix proteins showed significant correlation with LVEF and LVEDDI only. Those genes seem to reflect more specifically pathological alterations of systolic function and morphology in DCM hearts.
Space-Time Coding and Space-Time Channel Modelling for Wireless Communications
Creators: name: Lamahewa, Tharaka Anuradha
Publisher: name: The Australian National University
Year: 2006
Subjects: space-time coding
space-time channel modelling
MIMO
channel capacity
spatial precoding

description: In this thesis we investigate the effects of the physical constraints such as antenna aperture size, antenna geometry and non-isotropic scattering distribution parameters (angle of arrival/departure and angular spread) on the performance of coherent and non-coherent space-time coded wireless communication systems. First, we derive analytical expressions for the exact pairwise error probability (PEP) and PEP upper-bound of coherent and non-coherent space-time coded systems operating over spatially correlated fading channels using a moment-generating function-based approach. These analytical expressions account for antenna spacing, antenna geometries and scattering distribution models. Using these new PEP expressions, the degree of the effect of antenna spacing, antenna geometry and angular spread is quantified on the diversity advantage (robustness) given by a space-time code. It is shown that the number of antennas that can be employed in a fixed antenna aperture without diminishing the diversity advantage of a space-time code is determined by the size of the antenna aperture, antenna geometry and the richness of the scattering environment. ¶ In realistic channel environments the performance of space-time coded multiple-input multiple output (MIMO) systems is significantly reduced due to non-ideal antenna placement and non-isotropic scattering. In this thesis, by exploiting the spatial dimension of a MIMO channel we introduce the novel use of linear spatial precoding (or power-loading) based on fixed and known parameters of MIMO channels to ameliorate the effects of non-ideal antenna placement on the performance of coherent and non-coherent space-time codes. ...
Nonlocal quadratic Poisson algebras, monodromy map, and Bogoyavlensky lattices
Creators: name: Suris, Yuri B.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: A new Lax representation for the Bogoyavlensky lattice is found, its $r$--matrix interpretation is elaborated. The $r$--matrix structure turns out to be related to a highly nonlocal quadratic Poisson structure on a direct sum of associative algebras. The theory of such nonlocal structures is developed, the Poisson property of the monodromy map is worked out in the most general situation. Some problems concerning the duality of Lax representations are raised.
description: 35 pages, LaTeX
title: Design and Development of Galectin-Specific Inhibitors
Creators: name: Go, Rob-Marc
Publisher: name: Griffith University
Year: 2021
Subjects: subject: Galectins
subject: galectin binding site
subject: galectin-specific inhibitors

description: Galectins are a family of carbohydrate binding proteins found in the human body and are involved in the modulation of vital biological functions. These biological functions can be initiated through interactions formed between the conserved carbohydrate recognition domain and [beta]-galactoside-containing glycoconjugates. Due to their modulatory roles in cell homeostasis, galectins have been implicated in the progression of different diseases such as in tumours, cancers and inflammatory disorders, making them novel therapeutic targets. The activities of galectin can be inhibited by blocking interactions with its natural ligands and protein binding partners, through the design and development of small carbohydrate ligands. The amino acid residues that partake in the binding of carbohydrate ligands are highly conserved across the galectin family, leading to ligands binding in a very specific manner. To avoid cross-reactivity with other galectins in the body which could be detrimental in drug therapies, the development of selective inhibitors is essential. Galectin-3 and -4C have been determined to play roles in the progression of cancer and different inflammatory disorders and are the primary focus for this research project. The research studies presented and discussed in this thesis, revolve around the use of structural determination and computational techniques to identify and inform on the intricacies of the galectin binding site, to help aid in the development of galectin-specific inhibitors. [...]
Nonlinear atom-plasmon interactions enabled by nanostructured graphene
Creators: name: Cox, Joel D.
name: de Abajo, F. Javier García
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electrically tunable graphene plasmons are anticipated to enable strong light-matter interactions with resonant quantum emitters. However, plasmon resonances in graphene are typically limited to infrared frequencies, below those of optical excitations in robust quantum light sources and many biologically interesting molecules. Here we propose to utilize near fields generated by the plasmon-assisted nonlinear optical response of nanostructured graphene to resonantly couple with proximal quantum emitters operating in the near-infrared. We show that the nonlinear near-field produced by a graphene nanodisk can strongly excite and coherently control quantum states in two- and three-level atomic systems when the third harmonic of its plasmon resonance is tuned to a particular electronic transition. In the present scheme, emitter and plasmon resonances are nondegenerate, circumventing strong enhancement of spontaneous emission. We envision potential applications for the proposed nonlinear plasmonic coupling scheme in sensing and temporal quantum control.
description: 11 pages, 5 figures
Changes in soil properties along a forest succession gradient in mid Himalayan region, India: supplementary material
Creators: name: D.R. Bhardwaj
name: Pal, Sharmistha
name: Panwar, Pankaj
Publisher: name: Brill Online
Year: 2019
Subjects: subject: 60799 Plant Biology not elsewhere classified
subject: FOS: Biological sciences

description: In this paper we investigated how succession has altered soil properties in relation to plant biomass and litter characteristics in mid Himalayan region of India. The natural forest with four succession phases were identified. The early stages are (1) pure Pinus roxburghii forest of coniferous shade intolerant species (2) middle stage is a Pinus roxburghii + Quercus leucotricophora (60: 40) forest with combination of coniferous and deciduous species (3) later stage is a Quercus leucotricophora + Pinus roxburghii (60: 40) and (4) climax stage is a Pure Quercus leucotricophora forest of deciduous shade tolerant deciduous broadleaf species. The soil samples were collected from surface (0‒15cm) and subsurface (15‒30 cm and 30‒45 cm) levels. The soil properties showed gradual improvement with progress in succession phases. Our study shows that, there was a substantial increase in level of soil organic carbon and nitrogen from early to climax phase. Soil pH was significantly lower in early succession phase. The highest available nitrogen was under climax (pure oak) and least in early phase (pure pine) (402 and 347 Kg ha‒1 in surface soil, respectively). The concentration of very labile carbon (fraction 1) was highest in climax and least in early stage. The highest biomass accumulation was in climax (pure oak, 420.6 Mgha‒1), followed by oak + pine (348.7 Mgha‒1) and least in pine + oak (299.3 Mgha‒1). Out of 4 stages, shrub biomass was maximum in early (pure pine) (20.5 M Mgha‒1), being 6.57% of total biomass and least in climax (pure oak) (10.7 Mgha‒1), being 2.54% of total biomass. Further, the labile carbon pools showed a strong positive correlation with total biomass at different succession stages. The recalcitrant carbon pool had significant negative correlation with biomass. Hence, the study suggests that, this increase in soil organic carbon, nitrogen and soil fertility parameters are in accordance to changes in biomass and litter fall characteristics with progress in forest succession.
On the $N$-Cheeger problem for component-wise increasing norms
Creators: name: Saracco, Giorgio
name: Stefani, Giorgio
Publisher: name: arXiv
Year: 2024
Subjects: subject: Functional Analysis (math.FA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: Primary 49Q20. Secondary 35P30, 49Q10

description: We study Cheeger and $p$-eigenvalue partition problems depending on a given evaluation function $Φ$ for $p\in[1,\infty)$. We prove existence and regularity of minima, relations among the problems, convergence, and stability with respect to $p$ and to $Φ$.
description: 33 pages. Due to a miscommunication, we received one report after publication. This version incorporates the report's feedback and corrects the statement of Lemma 4.17 by adding a missing hypothesis
Propagation length of antiferromagnetic magnons governed by domain configurations
Creators: name: Ross, Andrew
name: Lebrun, Romain
name: Gomonay, Olena
name: Grave, Daniel A.
name: Kay, Asaf
name: Baldrati, Lorenzo
name: Becker, Sven
name: Qaiumzadeh, Alireza
name: Ulloa, Camilo
name: Jakob, Gerhard
name: Kronast, Florian
name: Sinova, Jairo
name: Duine, Rembert
name: Brataas, Arne
name: Rothschild, Avner
name: Kläui, Mathias
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The compensated magnetic order and characteristic, terahertz frequencies of antiferromagnetic materials makes them promising candidates to develop a new class of robust, ultra-fast spintronic devices. The manipulation of antiferromagnetic spin-waves in thin films is anticipated to lead to new exotic phenomena such as spin-superfluidity, requiring an efficient propagation of spin-waves in thin films. However, the reported decay length in thin films has so far been limited to a few nanometers. In this work, we achieve efficient spin-wave propagation, over micrometer distances, in thin films of the insulating antiferromagnet hematite with large magnetic domains whilst evidencing much shorter attenuation lengths in multidomain thin films. Through transport and magnetic imaging, we conclude on the role of the magnetic domain structure and spin-wave scattering at domain walls to govern the transport. We manipulate the spin transport by tailoring the domain configuration through field cycle training. For the appropriate crystalline orientation, zero-field spin-transport is achieved across micrometers, as required for device integration.
Design System of Revising Technology Adoption for IoT-Based Smart Campuses: A User-Centered Approach
Creators: name: C ANNA PALAGAN
Publisher: name: Zenodo
Year: 2024

description: Everything will soon transition to smart apps thanks to the government of India's effort under the "Smart India" programme. This will be accomplished using the information technology platforms. With fewer features needed than in a smart city, the ideas of a smart city will be applied in a smart campus. All resources on a traditional campus are manually monitored and controlled, but on a smart campus, everything is digitalized. In terms of reducing operating expenses, enhancing efforts, and being timely, digitization will significantly improve. We designed "Smart Campus-Green Environment" to solve all these problems. For this proposed method, we developed a problem-solving application of plant in terms of Energy efficiency, water conservation, and a speedy sprinkler system for the plant. The operating principle of this technology is based on the process of generating a digitalrepresentation of the vegetable, called a model. This model is used to measure and evaluate the micro-plasma impact of the vegetable in order to identify factors that may be associated with potential health risks. A new technology built on the principles of smart cities is the smart campus. With fewer features needed than in a smart city, the ideas of a smart city will be applied in a smart campus. All resources on a traditional campus are manually monitored and controlled, but on a smart campus, everything isdigitalized. In terms of reducing operating expenses, enhancing efforts, and being timely, digitization will significantly improve. Higher education institutions that use this cutting-edge technology to automatically monitor and manage campus infrastructure will undoubtedly provide the greatest services to their employees and students.
Nonnegative Ricci curvature, small linear diameter growth and finite generation of fundamental groups
Creators: name: Sormani, Christina
Publisher: name: arXiv
Year: 1998
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C21

description: In 1968, Milnor conjectured that a complete noncompact manifold with nonnegative Ricci curvature has a finitely generated fundamental group. The author applies the Excess Theorem of Abresch and Gromoll (1990), to prove two theorems. The first states that if such a manifold has small linear diameter growth then its fundamental group is finitely generated. The second states that if such a manifold has an infinitely generated fundamental group then it has a tangent cone at infinity which is not polar. A corollary of either theorem is the fact that if such a manifold has linear volume growth, then its fundamental group is finitely generated.
description: 12 pages, figures available from author sormani@math.jhu.edu
Functional Nanocomposites Formed by Two-step Back-filling Methods
Creators: Kramer, Theodore Jervey
Publisher: name: Columbia University
Year: 2013
Subjects: Materials science

description: This thesis investigates the synthesis and properties of nanocomposite materials comprised of inorganic nanocrystals (NCs) combined with a complementary organic compound utilizing sequential two-step synthesis methods. We demonstrate an enhancement in the mechanical and optical properties of electrophoreticially deposited (EPD) cadmium selendide (CdSe) nanocrystal (NC) films through post-deposition addition of organic ligand molecules and polymeric precursor molecules (monomers). Specifically we show that when these organic compounds are added (i.e. back-filled) into the as-deposited, wet EPD NC film, that fracture in the dried film is suppressed and photoluminscent (PL) efficiency of the inorganic NC phase is greatly increased. We go on to study the synthesis and properties of a novel nanocomposite comprised of inorganic NCs back-filled into a mat of semiconducting poly(3-hexylthiophene) [P3HT] nanowires. P3HT nanowire films are synthesized using a novel method developed as part of this thesis; where P3HT is blended with a sacrificial polymer (polystyrene, PS), leading to spontaneous demixing of the two polymers upon casting, and upon selective removal of the PS phase exposes a dense mat of P3HT nanowires. When back filled with CdSe NCs the composite material exhibits photovoltaic (PV) performance and provides a flexible platform for low-cost, hybrid organic/inorganic NC PV device fabrication. We conclude by showing how the above methods, in conjunction with novel ligand chemistry and lithographic techniques, can be utilized to create a photo-active nanocomposite consisting of lithographically defined, micron-scale, electrodes that are selectively decorated with electron-accepting NCs using EPD, and subsequently back-filled with a complementary electron-donating NC phase. The device architecture and resulting nanocomposite material is capable of lateral exciton separation on a potentially low-cost substrate.
Exact Partition Functions for Potts Antiferromagnets on Cyclic Lattice Strips
Creators: name: Shrock, Robert
name: Tsai, Shan-Ho
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present exact calculations of the zero-temperature partition function of the $q$-state Potts antiferromagnet on arbitrarily long strips of the square, triangular, and kagomé lattices with width $L_y=2$ or 3 vertices and with periodic longitudinal boundary conditions. From these, in the limit of infinite length, we obtain the exact ground-state entropy $S_0=k_B \ln W$. These results are of interest since this model exhibits nonzero ground state entropy $S_0 > 0$ for sufficiently large $q$ and hence is an exception to the third law of thermodynamics. We also include results for homeomorphic expansions of the square lattice strip. The analytic properties of $W(q)$ are determined and related to zeros of the chromatic polynomial for long finite strips.
description: 27 pages, Latex, 4 postscript figures, Physica A, in press
A closer look at Kadeishvili's theorem
Creators: name: Petersen, Dan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Algebra (math.QA)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We give a proof of the Homotopy Transfer Theorem following Kadeishvili's original strategy. Although Kadeishvili originally restricted himself to transferring a dg algebra structure to an $A_\infty$-structure on homology, we will see that a small modification of his argument proves the general case of transferring any kind of $\infty$-algebra structure along a quasi-isomorphism, under weaker hypotheses than existing proofs of this result.
description: 10 pages. v2: references added, inaccuracies corrected. Final version
Applications of Quantum Electro-Optic Control and Squeezed Light
Creators: name: Lam, Ping Koy
Publisher: name: The Australian National University
Year: 1998
Subjects: quantum electro-optic control
squeezed light
quantum optics
optical squeezing
second harmonic generation
optical parametric oscillation
optical parametric amplification
noiseless amplification
feedforward control loop
quantum nondemolition device
teleportation

description: In this thesis, we report the observations of optical squeezing from second harmonic generation (SHG), optical parametric oscillation (OPO) and optical parametric amplification (OPA). Demonstrations and proposals of applications involving the squeezed light and electro-optic control loops are presented. ¶ ...
A Mouse-adapted CVA6 Strain Exhibits Neurotropism and Triggers Systemic Manifestations in a Novel Murine Model
Creators: name: Li, Dong
name: Sun, Tiantian
name: Tao, Ling
name: Ji, Wangquan
name: Zhu, Peiyu
name: Liang, Ruonan
name: Zhang, Yu
name: Chen, Shuaiyin
name: Yang, Haiyan
name: Jin, Yuefei
name: Duan, Guangcai
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Neuroscience
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: CVA6 is one of Enteroviruses causing worldwide epidemics of HFMD with neurological and systemic complications. A suitable animal model is necessary for studying the pathogenesis of CVA6 and evaluating antiviral and vaccine efficacy. In this study, we generated a mouse-adapted CVA6 strain that successfully infected 10-day-old ICR mice via oral route. All infected mice were paralyzed and died within 11 dpi. Analysis of pathological changes and virus loads in fourteen tissues showed that CVA6 triggered systematic damage similar to i.p. inoculation route. Unlike i.p. route, we detected oral and gastrointestinal lesions with the presence of viral antigens. Both specific anti-CVA6 serum and inactivated vaccines successfully generated immune protection in mice. Meanwhile, we also established a successful infection of CVA6 via i.p. and i.m. route in 10-day-old mice. After infection, mice developed remarkably neurological signs and systemic manifestations such as emaciation, polypnea, quadriplegia, depilation and even death. Through i.p. inoculation, pathological examination showed brain and spinal cord damage caused by the virus infection with neuronal reduction, apoptosis, astrocyte activation, and recruitment of neutrophils and monocytes. Following neurological manifestation, the CVA6 infection became systemic, and high viral loads were detected in multiple organs along with morphological changes and inflammation. Moreover, analysis of spleen cells by FACS indicated that CVA6 led to immune system activation, which further contributed to systemic inflammation. Taken together, our novel murine model of CVA6 provides a useful tool for studying the pathogenesis and evaluating antiviral and vaccine efficacy.
Inferring the Spatial Distribution of Regolith Properties Using Surface Measurable Features
Creators: name: Laffan, Shawn
Publisher: name: The Australian National University
Year: 2001
Subjects: spatial distribution
regolith properties
surface measurable features
oxides
Weipa, Queensland, Australia
surface hydrology
land surface morphology

description: The aim of this research is to determine to what extent properties of the regolith may be inferred using only features easily measured from the surface. To address this research question, a set of regolith properties from Weipa, Queensland, Australia, are analysed. The set contains five variables, oxides of Aluminium, Iron, Silica and Titanium, as well as Depth to Ironstone. This last represents the depth of the layer from which the oxides are sampled.¶ The research question is addressed in two ways. First, locations where the properties are related to modern surface hydrology are assessed using spatially explicit analyses. This is done by comparing the results of spatial association statistics using geometric and watershed-based spatial samples. Second, correlations are sought for between the regolith properties and geomorphometric indices of land surface morphology and Landsat Thematic Mapper spectral response. This is done using spatially implicit Artificial Neural Networks (ANN) and spatially explicit Geographically Weighted Regression (GWR). The results indicate that the degree to which regolith properties are related to surface measurable features is limited and spatially variable.¶ ... ¶ The implications of these results are significant for anyone intending to generate spatial datasets of regolith properties. If there is a low spatial density of sample data, then the effects of landscape evolution can reduce the utility of any analysis results. Instead, spatially dense, direct measurements of subsurface regolith properties are needed. While these may not be a direct measurement of the property of interest, they may provide useful additional information by which these may be inferred.