cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cryptosporidium capture and detection of ultraviolet radiation induced DNA damage
Creators: name: Urmi, Nusrat Jahan
Publisher: name: University of British Columbia
Year: 2017

description: Majority of the waterborne outbreaks in USA and Canada are associated with protozoa. Cryptosporidium, an obligate intra-cellular human pathogen, is responsible for more than 50% of these outbreaks and has become one of the major public health concerns as they can survive typical chemical disinfection treatments. Early detection of this parasite in the water and determination of ultraviolet treatment efficacy can play a role in reducing this disease burden. An antibody based capture surface was developed to detect Cryptosporidium oocysts in treated water. The surface was able to capture three different species of Cryptosporidium: C. parvum; C. muris; C. hominis but not E. coli indicating that the capture surface is Cryptosporidium genus specific rather than species specific and the chances of capturing microorganisms other than Cryptosporidium from water are low. IgG3 was selected as better candidate for the capture surface development due to its higher capture efficiency (~84%-90%) compared to that of IgG1 (~54%-74%). Though the oocysts were successfully released in intact form from the capture surface at pH 1.0, it was not possible to reuse the surface because the capture performance decreased after pH treatment. An indirect ELISA protocol was optimized to detect UV induced photoproducts (CPDs) in the DNA of UV treated Cryptosporidium oocysts using cuvettes in a spectrophotometer. Power soil kit was selected as the preferred DNA extraction kit because of its high recovery from low concentration of Cryptosporidium in water with high concentrations of other solids. The optimized ELISA protocol was applied on the samples spiked with different doses (0, 3, 6, 10 and 40 mJ/cm²) of UV irradiated Cryptosporidium oocysts. The signal generated from DNA-antibody reaction resulted in an exponential rise to maximum curve which showed that the absorbance (indication of DNA damage) increased with the increase in UV dose. Adaptation of these techniques for Cryptosporidium detection & UV treatment validation is expected to improve the standards for water quality monitoring, providing the communities with assurance that their water is safe to consume.
A guide to closure operations in commutative algebra
Creators: name: Epstein, Neil
Publisher: name: arXiv
Year: 2011
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: Primary 13-02, Secondary 13A15, 13A35, 13B22, 13A99

description: This article is a survey of closure operations on ideals in commutative rings, with an emphasis on structural properties and on using tools from one part of the field to analyze structures in another part. The survey is broad enough to encompass the radical, tight closure, integral closure, basically full closure, saturation with respect to a fixed ideal, and the v-operation, among others.
description: 32 pages; minor changes to section 4; to appear in the volume "Progress in Commutative Algebra" (Sean Sather-Wagstaff, Christopher Francisco, Lee Klingler, and Janet Vassilev, eds.), de Gruyter publ
Bringing rights to the table : domestic workers' experiences defending labour rights in Brazil
Creators: name: Prado Nogueira, Marina
Publisher: name: University of British Columbia
Year: 2017

description: Are changes to labour law legislation still relevant today when neoliberalism is curtailing industrial citizenship? And, where progressive changes are introduced, what evidence exists, if any, of changing relations between marginalized women workers (e.g. “domésticas”) and their employers? In 2013, the Brazilian government passed a Constitutional Amendment Bill n°72/2013 (also referred to as PEC Das Domésticas), a set of labour laws harmonizing domestic workers’ rights to that of workers in other occupations. This study examines the new legislation of the PEC and ascertains its significance to improve the terms and conditions shaping the everyday experiences of domésticas. Using qualitative methodologies grounded in feminist theories of intersectionality and affect, I critically analyze the holistic experiences of women domestic workers, understood as overlapping and intertwined realities of class, gender, and racial identifications. By weaving domestic workers’ narratives into an intersectional analysis of domestic work as affective labour, I expose the multiple forms of historically derived oppressions, as well as strategies of resistance arising to contest the exploitation of their labour. This research then argues that labour rights alone are insufficient to address the vulnerabilities and challenges experience by women domestic workers. Domestic workers’ experiences suggest the struggle for better working conditions and social recognition is implicated in contemporary frictions between cultural notions of servitude and the exercise of citizenship by the working classes. While Brazil’s recent policy reform reveals persistent bourgeoisie discourses resisting treating domestic work as work, it also serves to bring domestic work to greater visibility and a renewed political consciousness about identity and workplace issues. The present study contributes to the ongoing scholarly debates on how structural inequalities based on gender and race influence labour market segregation and reinforce the undervaluation of care and domestic work.
Monopole oscillations in light nuclei with a molecular dynamics approach
Creators: name: Furuta, T.
name: Hasnaoui, K. H. O.
name: Gulminelli, F.
name: Leclercq, C.
name: Ono, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Collective monopole vibrations are studied in the framework of an antisymmetrized version of molecular dynamics as a function of the vibration amplitude. The giant monopole resonance energy in ${}^{40}Ca$ is sensitive to the incompressibility of the effective interaction, in good agreement with complete time-dependent Hartree-Fock calculations. The collective response of ${}^{12}C$, ${}^{16}O$ and ${}^{24}Mg$ is also studied. For these lighter nuclei that have an important contribution of an $α$-clustered component, different frequencies are observed, corresponding to two different types of vibrations associated with breathing and moving of the underlying clusters. Possible connections with direct breakup into $α$ clusters at high excitation energy are discussed.
description: 10 pages, 8 figures
Rendering of 3D Dynamic Virtual Environments
Creators: name: Catanese, Salvatore
name: Ferrara, Emilio
name: Fiumara, Giacomo
name: Pagano, Francesco
Publisher: name: arXiv
Year: 2011
Subjects: subject: Graphics (cs.GR)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences
subject: H.5.1; I.2.1; I.3.7
subject: 68

description: In this paper we present a framework for the rendering of dynamic 3D virtual environments which can be integrated in the development of videogames. It includes methods to manage sounds and particle effects, paged static geometries, the support of a physics engine and various input systems. It has been designed with a modular structure to allow future expansions. We exploited some open-source state-of-the-art components such as OGRE, PhysX, ParticleUniverse, etc.; all of them have been properly integrated to obtain peculiar physical and environmental effects. The stand-alone version of the application is fully compatible with Direct3D and OpenGL APIs and adopts OpenAL APIs to manage audio cards. Concluding, we devised a showcase demo which reproduces a dynamic 3D environment, including some particular effects: the alternation of day and night infuencing the lighting of the scene, the rendering of terrain, water and vegetation, the reproduction of sounds and atmospheric agents.
description: 8 pages, 11 figures, Proceedings of the 4th International ICST Conference on Simulation Tools and Techniques (2011)
title: Artificial intelligence for online characterization of ultrashort X-ray free-electron laser pulses
Creators: name: Dingel, Kristina
name: Otto, Thorsten
name: Marder, Lutz
name: Funke, Lars
name: Held, Arne
name: Savio, Sara
name: Hans, Andreas
name: Hartmann, Gregor
name: Meier, David
name: Viefhaus, Jens
name: Sick, Bernhard
name: Ehresmann, Arno
name: Ilchen, Markus
name: Helml, Wolfram
Publisher: name: Universität Kassel
Year: 2022
Subjects: subject: Applied physics
subject: Characterization and analytical techniques
subject: Computer science
subject: Statistics
subject: FOS: Mathematics
subject: 530
subject: Angewandte Physik
subject: Röntgenlaser
subject: Ultrakurzzeitlaser
subject: Künstliche Intelligenz

description: Gefördert durch den Publikationsfonds der Universität Kassel
Social interaction as a heuristic for combinatorial optimization problems
Creators: name: Fontanari, Jose F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We investigate the performance of a variant of Axelrod's model for dissemination of culture - the Adaptive Culture Heuristic (ACH) - on solving an NP-Complete optimization problem, namely, the classification of binary input patterns of size $F$ by a Boolean Binary Perceptron. In this heuristic, $N$ agents, characterized by binary strings of length $F$ which represent possible solutions to the optimization problem, are fixed at the sites of a square lattice and interact with their nearest neighbors only. The interactions are such that the agents' strings (or cultures) become more similar to the low-cost strings of their neighbors resulting in the dissemination of these strings across the lattice. Eventually the dynamics freezes into a homogeneous absorbing configuration in which all agents exhibit identical solutions to the optimization problem. We find through extensive simulations that the probability of finding the optimal solution is a function of the reduced variable $F/N^{1/4}$ so that the number of agents must increase with the fourth power of the problem size, $N \propto F^ 4$, to guarantee a fixed probability of success. In this case, we find that the relaxation time to reach an absorbing configuration scales with $F^ 6$ which can be interpreted as the overall computational cost of the ACH to find an optimal set of weights for a Boolean Binary Perceptron, given a fixed probability of success.
Limits to the Fixed Center Approximation to Faddeev equations: the case of the $ϕ(2170)$
Creators: name: Torres, A. Martínez
name: Garzon, E. J.
name: Oset, E.
name: Dai, L. R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Fixed Center Approximation to the Faddeev equations (FCA) has been used lately with success in the study of bound systems of three hadrons. It is also important to set the limits of the approach in those problems to prevent proliferation of inaccurate predictions. In this paper we study the case of the $ϕ(2170)$, which has been described by means of Faddeev equations as a resonant state of $ϕ$ and $K \bar{K}$, and show the problems derived from the use of the FCA in its study. At the same time we also expose the limitations of an alternative approach recently proposed.
title: A Review of the Bank of Canada’s Support of Key Financial Markets During the COVID-19 Crisis
Creators: name: Fernandes, Joshua
name: Mueller, Michael
Publisher: name: Bank of Canada
Year: 2023

description: The COVID-19 pandemic placed unprecedented strain on the global financial system. We describe how the Bank of Canada responded to the rapidly deteriorating liquidity in core Canadian fixed-income markets. We also describe how market functioning improved after the Bank intervened. The Bank implemented several emergency facilities to ease market-wide liquidity strains, restore market functioning and support the stabilization and recovery of the Canadian economy. Over time, market functioning improved, and liquidity returned to prepandemic levels. The Bank’s facilities helped resolve market dysfunction and ensured that credit continued to be extended to households and businesses.
description: La pandémie de COVID-19 a exercé des tensions sans précédent sur le système financier mondial. Nous décrivons la manière dont la Banque du Canada a réagi à la détérioration rapide de la liquidité des principaux marchés canadiens des titres à revenu fixe. Nous examinons aussi comment le fonctionnement des marchés s’est amélioré après l’intervention de la banque centrale. La Banque a mis en place plusieurs mécanismes d’urgence dans le but de réduire les tensions sur la liquidité dans l’ensemble des marchés, de rétablir le fonctionnement des marchés et de soutenir la stabilisation et la reprise de l’économie canadienne. Au fil du temps, le fonctionnement des marchés s’est amélioré et la liquidité est revenue aux niveaux prépandémiques. Les mécanismes de la Banque ont contribué à corriger le dysfonctionnement des marchés et à garantir l’octroi de crédit aux ménages et aux entreprises.
The J1-J2 Heisenberg model at and close to its z=4 quantum critical point
Creators: name: Sirker, J.
name: Krivnov, V. Y.
name: Dmitriev, D. V.
name: Herzog, A.
name: Janson, O.
name: Nishimoto, S.
name: Drechsler, S. -L.
name: Richter, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the frustrated J1-J2 Heisenberg model with ferromagnetic nearest neighbor coupling J1<0 and antiferromagnetic next-nearest neighbor coupling J2>0 at and close to the z=4 quantum critical point (QCP) at J1/J2=-4. The J1-J2 model plays an important role for recently synthesized chain cuprates as well as in supersymmetric Yang Mills theories. We study the thermodynamic properties using field theory, a modified spin-wave theory as well as numerical density-matrix renormalization group calculations. Furthermore, we compare with results for the classical model obtained by analytical methods and Monte-Carlo simulations. As one of our main results we present numerical evidence that the susceptibility at the QCP seems to diverge with temperature T as chi ~ T^{-1.2} in the quantum case in contrast to the classical model where chi ~ T^{-4/3}.
description: References added and other minor changes
Possible gamma-ray emission of radio intermediate AGN III Zw 2 and its implication on the evolution of jets in AGNs
Creators: name: Chen, Liang
name: Bai, J. M.
name: Zhang, Jin
name: Liu, H. T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: AGNs with hard $γ$-ray emission identified so far are radio-loud. III Zw 2 is a radio intermediate AGN with a relativistic jet. We study its spectral energy distribution (SED) and find that the broad band emissions are dominated by the non-thermal emissions from the jet. We model its SED through a synchrotron + inverse Compton (IC) model. The results show that the IC component of III Zw 2 peaks at a few MeV, and the flux density drops rapidly at higher energy with photon index $Γ\approx3.3$ above 0.1 GeV. The predicted flux is slightly over the sensitivity of $Fermi$/LAT, but it is not included in the first $Fermi$/LAT AGN catalog. The reason for this may be: 1) that the IC peak is low and the spectrum is very steep above 0.1 GeV, 2) that III Zw 2 is in the low state during the period of the $Fermi$/LAT operation. We also find that III Zw 2 follows similar jet processes as those in $γ$-ray AGNs, e.g., the relation between jet power and radiation power, called the blazar sequence. We suggest that III Zw 2 may be a young source at an earlier stage of jet activity.
description: 7 pages, 4 figures, matches version published in Research in Astronomy and Astrophysics (RAA)
Dijet asymmetry at the Large Hadron Collider
Creators: name: Young, Clint
name: Schenke, Björn
name: Jeon, Sangyong
name: Gale, Charles
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The MARTINI numerical simulation allows for direct comparison of theoretical model calculations and the latest results for dijet asymmetry from the ATLAS and CMS collaborations. In this paper, partons are simulated as undergoing radiative and collisional processes throughout the evolution of central lead-lead collisions at the Large Hadron Collider. Using hydrodynamical background evolution determined by a simulation which fits well with the data on charged particle multiplicities from ALICE and a value of $α_s\approx 0.25-0.3$, the dijet asymmetry is found to be consistent with partonic energy loss in a hot, strongly-interacting medium.
description: 8 pages, 3 figures. For version 2: ATLAS' latest analysis is included, with some comments and minor changes of wording
Non-Markovian decay and dynamics of decoherence in private and public environments
Creators: name: Dente, Axel D.
name: Zangara, Pablo R.
name: Pastawski, Horacio M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the decay process in an open system, emphasizing on the relevance of the environment's spectral structure. Non-Markovian effects are included to quantitatively analyze the degradation rate of the coherent evolution. The way in which a two level system is coupled to different environments is specifically addressed: multiple connections to a single bath (public environment)or single connections to multiple baths (private environments). We numerically evaluate the decay rate of a local excitation by using the Survival Probability and the Loschmidt Echo. These rates are compared to analytical results obtained from the standard Fermi Golden Rule (FGR) in Wide Band Approximation, and a Self-Consistent evaluation that accounts for the bath's memory in cases where an exact analytical solution is possible. We observe that the correlations appearing in a public bath introduce further deviations from the FGR as compared with a private bath.
description: 18 pages, 7 figures. Accepted for publication in Physical Review A
QCD and Light-Front Holography
Creators: name: Brodsky, Stanley J.
name: de Teramond, Guy F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The soft-wall AdS/QCD model, modified by a positive-sign dilaton metric, leads to a remarkable one-parameter description of nonperturbative hadron dynamics. The model predicts a zero-mass pion for zero-mass quarks and a Regge spectrum of linear trajectories with the same slope in the leading orbital angular momentum $L$ of hadrons and the radial quantum number $N$. Light-Front Holography maps the amplitudes which are functions of the fifth dimension variable $z$ of anti-de Sitter space to a corresponding hadron theory quantized on the light front. The resulting Lorentz-invariant relativistic light-front wave equations are functions of an invariant impact variable $ζ$ which measures the separation of the quark and gluonic constituents within the hadron at equal light-front time. The result is a semi-classical frame-independent first approximation to the spectra and light-front wavefunctions of meson and baryon light-quark bound states, which in turn predict the behavior of the pion and nucleon form factors. The effects of chiral symmetry breaking increase as one goes toward large interquark separation, consistent with spectroscopic data, and the hadron eigenstates generally have components with different orbital angular momentum; e.g., the proton eigenstate in AdS/QCD with massless quarks has L=0 and L=1 light-front Fock components with equal probability. The soft-wall model also predicts the form of the non-perturbative effective coupling $α_s^{AdS}(Q)$ which agrees with the effective coupling extracted from the Bjorken sum rule. The AdS/QCD model can be systematically improved by using its complete orthonormal solutions to diagonalize the full QCD light-front Hamiltonian or by applying the Lippmann-Schwinger method in order to systematically include the QCD interaction terms. A new perspective on quark and gluon condensates is also reviewed.
description: Invited talk, presented by SJB at the 50th Crakow School, Zakopane, Poland; final version to appear in proceedings
Delimited control operators prove Double-negation Shift
Creators: name: Ilik, Danko
Publisher: name: arXiv
Year: 2010
Subjects: subject: Logic (math.LO)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We propose an extension of minimal intuitionistic predicate logic, based on delimited control operators, that can derive the predicate-logic version of the Double-negation Shift schema, while preserving the disjunction and existence properties.
Loop algorithm for classical Heisenberg models with spin-ice type degeneracy
Creators: name: Shinaoka, Hiroshi
name: Motome, Yukitoshi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In many frustrated Ising models, a single-spin flip dynamics is frozen out at low temperatures compared to the dominant interaction energy scale because of the discrete "multiple valley" structure of degenerate ground-state manifold. This makes it difficult to study low-temperature physics of these frustrated systems by using Monte Carlo simulation with the standard single-spin flip algorithm. A typical example is the so-called spin ice model, frustrated ferromagnets on the pyrochlore lattice. The difficulty can be avoided by a global-flip algorithm, the loop algorithm, that enables to sample over the entire discrete manifold and to investigate low-temperature properties. We extend the loop algorithm to Heisenberg spin systems with strong easy-axis anisotropy in which the ground-state manifold is continuous but still retains the spin-ice type degeneracy. We examine different ways of loop flips and compare their efficiency. The extended loop algorithm is applied to the following two models, a Heisenberg antiferromagnet with easy-axis anisotropy along the z axis, and a Heisenberg spin ice model with the local <111> easy-axis anisotropy. For both models, we demonstrate high efficiency of our loop algorithm by revealing the low-temperature properties which were hard to access by the standard single-spin flip algorithm. For the former model, we examine the possibility of order-from-disorder and critically check its absence. For the latter model, we elucidate a gas-liquid-solid transition, namely, crossover or phase transition among paramagnet, spin-ice liquid, and ferromagnetically-ordered ice-rule state.
description: 12 pages, 11 figures, accepted for publication in Phys. Rev. B
Monte Carlo Simulations of Hadronic Fragmentation Functions using NJL-Jet Model
Creators: name: Matevosyan, Hrayr H.
name: Thomas, Anthony W.
name: Bentz, Wolfgang
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The recently developed Nambu-Jona-Lasinio (NJL) - Jet model is used as an effective chiral quark theory to calculate the quark fragmentation functions to pions, kaons, nucleons, and antinucleons. The effects of the vector mesons rho, K* and phi on the production of secondary pions and kaons are included. The fragmentation processes to nucleons and antinucleons are described by using the quark-diquark picture, which has been shown to give a reasonable description of quark distribution functions. We incorporate effects of next-to-leading order (NLO) in the Q^2 evolution, and compare our results with the empirical fragmentation functions.
description: 27 pages, 13 figures
Production of $ωπ^0$ pair in electron-positron annihilation
Creators: name: Arbuzov, A. B.
name: Kuraev, E. A.
name: Volkov, M. K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The process of electron-positron annihilation into a pair of $π^0$ and $ω$ mesons is considered in the framework of the SU(2)$\times$SU(2) Nambu--Jona-Lasinio model. Contributions of intermediate photons, $ρ(770)$ and $ρ'(1450)$ vector mesons are taken into account. It is shown that the bulk of the cross section at energies below 2 GeV is provided by the process with intermediate $ρ'(1450)$ state. The contribution due to single photon and $ρ(770)$ exchange is in agreement with the vector meson dominance model. Numerical results are compared with experimental data.
description: A mistake is corrected, results are updated; 5 pages
Computation of convex conjugates in linear time using graph-matrix calculus
Creators: name: Haque, Tasnuva
Publisher: name: University of British Columbia
Year: 2017

description: Computational Convex Analysis focuses on computing the convex operators which are used very often in convex analysis. The Fenchel conjugate is one of the most frequently used convex operator. The objective of this thesis is to develop an algorithm for computing the conjugate of a bivariate Piecewise Linear-Quadratic (PLQ) function. Although some algorithms already exist for computing the conjugate of a bivariate PLQ function, their worst-case time complexity is not linear. Our challenge is to improve the worst case time complexity to linear. We use a planar graph to represent the entities of a PLQ function. Each node of the graph contains a GPH matrix which represents an entity of the PLQ function . In addition, we store the adjacency information and type of all entities. We traverse the graph using breadth first search and compute the conjugate of each entity. Moreover we store the information of visited entities using a binary flag. So we never need loop through all entities to check whether it is already visited. As a result we get linear computation time in the worst case. We perform numerical experiment which confirms that our algorithm is running in linear-time. We provide a comparison of the performance of this algorithm with the previous algorithms. Finally we explained how to extend this algorithm in higher dimensions while keeping the worst-case time complexity linear.
title: Clinical characteristics of oral lichen planus and its causal context with dental restorative materials and oral health-related quality of life
Creators: name: Daume, Linda
name: Kreis, Constance
name: Bohner, Lauren
name: Jung, Susanne
name: Kleinheinz, Johannes
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 610 Medicine and health

description: Background: The aim of this study was to investigate the influence of clinical characteristics and dental restorative materials on oral health-related quality of life in patients with oral lichen planus. In particular, the influences of amalgam and metals were investigated. Methods: A total of 112 patients with clinical and histological features of oral lichen planus from the Department of Cranio-Maxillofacial Surgery at the University Hospital of Münster participated in this prospective study. Clinical parameters of oral lichen planus and the dental restorative materials used were evaluated. Oral health-related quality of life was investigated by using the short form of the German version of the Oral Health Impact Profile (OHIP-14). In addition, physical pain was rated on a visual analogue scale. Results: The average OHIP-14 score was 13.54. A high correlation was seen between OHIP and pain. Likewise, higher OHIP-values were seen for male patients, and such as for those patients with non-reticular forms of oral lichen planus (OLP). A local form of OLP is more often seen on female patients, such as with the presence of reticular lichen. In regard to the restorations, the presence of composite restorations is correlated with a local lichen, whereas the presence of gold restorations is often seen with a generalized lichen. Furthermore, the grading of strength of association between mucosal lesion and amalgam/metal was tested. No significant differences revealed the analysis of the relationship between gender, clinical form of OLP, age, and presentation form between the 4 gradings of Thornhill. Conclusions: The oral health-related quality of life is significantly limited in patients with oral lichen planus. But these OHIP scores are not influenced by the restorative materials. Here, pain severity is the most important aspect. We found no statistical differences in the clinical parameters between patients with amalgam or metal restoration and patients without these restorations. It is not necessary to replace amalgam fillings that are not in direct contact with mucosal surfaces.
description: Finanziert über die DEAL-Vereinbarung mit Wiley 2019-2022.
Local BRST cohomology in (non-)Lagrangian field theory
Creators: name: Kaparulin, D. S.
name: Lyakhovich, S. L.
name: Sharapov, A. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Some general theorems are established on the local BRST cohomology for not necessarily Lagrangian gauge theories. Particular attention is given to the BRST groups with direct physical interpretation. Among other things, the groups of rigid symmetries and conservation laws are shown to be still connected, though less tightly than in the Lagrangian theory. The connection is provided by the elements of another local BRST cohomology group whose elements are identified with Lagrange structures. This extends the cohomological formulation of the Noether theorem beyond the scope of Lagrangian dynamics. We show that each integrable Lagrange structure gives rise to a Lie bracket in the space of conservation laws, which generalizes the Dickey bracket of conserved currents known in Lagrangian field theory. We study the issues of existence and uniqueness of the local BRST complex associated with a given set of field equations endowed with a compatible Lagrange structure. Contrary to the usual BV formalism, such a complex does not always exist for non-Lagrangian dynamics, and when exists it is by no means unique. The ambiguity and obstructions are controlled by certain cohomology classes, which are all explicitly identified.
description: 37 pages, 1 figure, minor corrections, references added
Investigation of the Effect of Rising Temperature and Traffic Loading on the Behaviour of Rigid Pavements to Minimise Maintenance Requirements – Case Study of Lebanese Roads
Creators: name: Dagher, Imad Ezzat
Publisher: name: London South Bank University
Year: 2021

description: The aim of this project is to study the effects of high temperature on the performance of rigid pavements including that of Lebanese roads and to develop suitable design and maintenance approaches that enable such pavements to sustain high loading of temperature and traffic. The objectives are to gain a deeper understanding of the condition and performance of existing highway rigid pavements and the need for a durable pavement. More specifically, to fully understand the effect of climate change in terms of temperature changes on rigid pavements and to identify structural layers configuration and material properties that enable the pavement to sustain high temperature and heavy traffic loading, and to develop more effective and sustainable rigid pavement structures to minimise maintenance requirements. The work also includes the design of suitable overlays to maintain and extend the life of the existing rigid pavements. The methodology used to complete the project is by analysing pavement deflection and the effect of high temperature using specialised highway and structural analysis software, particularly the packages KENPAVE, STREETPAVE12 and ABAQUS. The main findings are that fatigue and erosion are the two most significant failing scenarios for rigid pavement, but more specifically, as the temperature increases, the cracking index increases which may lead to fatigue failure. Finite element models and analyses were used to determine the distress caused by traffic loading and high temperature. This research has found that the main factors that strengthen the performance and sustainability of the rigid pavements under high temperature and traffic loading are: thicker slab, high modulus concrete, strong and thicker foundation layers and a subgrade with high CBR%, in addition to a strong and thicker overlay to extend the life of the pavement. The key conclusions are that rising temperatures and high traffic loading have been identified as having a major effect on the performance of rigid pavement, leading to fatigue failure criteria. Erosion is also a common failure criterion which establishes itself at times of high traffic loading. It has been found here that the cracking index of the concrete slab increases when the air temperature changes from 20°C to 60°C. At higher temperatures and with thinner slabs, the cracking index occurrence increases. In conclusion, in Lebanon a minimum of 260 mm rigid pavement would be more suitable to reduce pavement failing under fatigue criteria.
Bayesian inference of stellar parameters and interstellar extinction using parallaxes and multiband photometry
Creators: name: Bailer-Jones, C. A. L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Astrometric surveys provide the opportunity to measure the absolute magnitudes of large numbers of stars, but only if the individual line-of-sight extinctions are known. Unfortunately, extinction is highly degenerate with stellar effective temperature when estimated from broad band optical/infrared photometry. To address this problem, I introduce a Bayesian method for estimating the intrinsic parameters of a star and its line-of-sight extinction. It uses both photometry and parallaxes in a self-consistent manner in order to provide a non-parametric posterior probability distribution over the parameters. The method makes explicit use of domain knowledge by employing the Hertzsprung--Russell Diagram (HRD) to constrain solutions and to ensure that they respect stellar physics. I first demonstrate this method by using it to estimate effective temperature and extinction from BVJHK data for a set of artificially reddened Hipparcos stars, for which accurate effective temperatures have been estimated from high resolution spectroscopy. Using just the four colours, we see the expected strong degeneracy (positive correlation) between the temperature and extinction. Introducing the parallax, apparent magnitude and the HRD reduces this degeneracy and improves both the precision (reduces the error bars) and the accuracy of the parameter estimates, the latter by about 35%. The resulting accuracy is about 200K in temperature and 0.2mag in extinction. I then apply the method to estimate these parameters and absolute magnitudes for some 47000 F,G,K Hipparcos stars which have been cross-matched with 2MASS. The method can easily be extended to incorporate the estimation of other parameters, in particular metallicity and surface gravity, making it particularly suitable for the analysis of the 10^9 stars from Gaia.
description: MNRAS, in press. The catalogue is available from http://tinyurl.com/qmethod. Minor changes/corrections to text made in v2
การสื่อสารที่ส่งผลต่อการตีตราผู้ติดเชื้อเอชไอวี/ผู้ป่วยเอดส์: ภาพตัวแทน และความหมายต่อคุณภาพชีวิตผู้ติดเชื้อ
Creators: name: ณัฏฐวัฒน์ ตั้งปฐมวงศ์
Publisher: name: Division of AIDS&STIs
Year: 2019
Subjects: คุณภาพชีวิต
ความหมาย
ภาพตัวแทน
การตีตรา
ผู้ติดเชื้อเอชไอวี
ผู้ป่วยเอดส์
การสื่อสาร

description: Thai AIDS Journal, 31, 3, 103-115
Baryon Asymmetry of the Universe in the NuMSM
Creators: name: Canetti, Laurent
name: Shaposhnikov, Mikhail
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We perform a detailed analysis of baryon asymmetry generation in the NuMSM (an extension of the Standard Model by three singlet Majorana fermions with masses below the Fermi scale). Fixing a number of parameters of the NuMSM by the neutrino oscillation data, we determine the remaining domain of the parameter space from the requirement of successful baryogenesis. We derive, in particular, the constraints on the mass splitting of a pair of singlet fermions, and on the strength of their coupling to ordinary leptons, essential for searches of these particles in rare decays of mesons and in beam-dump experiments with intensive proton beams.
อัตราความชุกและปัจจัยที่สัมพันธ์กับโรคติดต่อทางเพศสัมพันธ์ ในกลุ่มเยาวชน จังหวัดยโสธร
Creators: name: ถนอม นามวงศ์
Publisher: name: Division of AIDS&STIs
Year: 2019
Subjects: โรคติดต่อทางเพศสัมพันธ์
เยาวชน
ยโสธร

description: Thai AIDS Journal, 31, 3, 116-124
Double transitions, non-Ising criticality and critical absorbing phase in an interacting monomer-dimer model on a square lattice:
Creators: name: Nam, Keekwon
name: Park, Sangwoong
name: Kim, Bongsoo
name: Lee, Sung Jong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a numerical study on an interacting monomer-dimer model with nearest neighbor repulsion on a square lattice, which possesses two symmetric absorbing states. The model is observed to exhibit two nearby continuous transitions: the $Z_2$ symmetry-breaking order-disorder transition and the absorbing transition with directed percolation criticality. We find that the symmetry-breaking transition shows a non-Ising critical behavior, and that the absorbing phase becomes critical, in the sense that the critical decay of the dimer density observed at the absorbing transition persists even within the absorbing phase. Our findings call for further studies on the microscopic models and corresponding continuum description belonging to the generalized voter universality class.
description: to be published in JSTAT
title: Δημιουργία Πειραματικού σχολείου στο κέντρο της Αθήνας
title: Creation of experimental school in the center of Athens
Creators: name: Μπουρτζινακου Παναγιωτα
Publisher: name: Technical University of Crete
Year: 2021

description: Στην παρούσα διπλωματική εργασία επιχειρείται η δημιουργία ενός σχολείου που να ανταποκρίνεται στις ανάγκες και τα ενδιαφέροντα των μαθητών στον 21ο αιώνα και κατ’ επέκταση και στις απαιτήσεις της σύγχρονης κοινωνίας.
Ο σχεδιασμός προβλέπει ο χώρος αυτός να είναι χώρος ευχάριστης παραμονής, συνεργασίας, δημιουργίας, απόκτησης γνώσεων και δεξιοτήτων, ανάπτυξης ελεύθερης σκέψης και φαντασίας, ενίσχυσης και καλλιέργειας ιδιαίτερων κλίσεων και ενδιαφερόντων.
Μέσα σ’ έναν τέτοιο χώρο επιτυγχάνονται οι στόχοι του σχολείου να διαμορφώσει υγιείς, ολοκληρωμένες προσωπικότητες πολύπλευρες, ευαισθητοποιημένες και επαρκείς ώστε να ανταποκριθούν στις προκλήσεις των καιρών.
Επιπλέον η χωροθέτιση του σχολείου στο κέντρο της Αθήνας, τονίζει την εξέχουσα σημασία της συνομιλίας και συνεργασίας σχολείου, πόλης, αλλά και κοινότητας. Η περιοχή βρίθει από μουσεία, θέατρα, χώρους πολιτιστικής και ιστορικής αξίας αλλά και χώρους φυσικού κάλλους, έτσι η πόλη μπορεί να γίνει και αυτή, πολύ σημαντικό μέσο δια βίου μάθησης για τα παιδιά. Στην παρούσα εργασία το σχολείο ακόμα υφίσταται ως  καρδιά της κοινότητας, αποτελώντας  χώρο έκφρασης, μάθησης και δράσης γι’ αυτή.
Τέλος, δίνεται ιδιαίτερη έμφαση στην δημιουργία πράσινων χώρων μέσα στο σχολείο με τους οποίους τα παιδιά θα έρχονται σε καθημερινή επαφή. Στους χώρους αυτούς μαθαίνουν να καλλιεργούν, να προστατεύουν και να σέβονται το φυσικό περιβάλλον. Σύμφωνα με τον Reggio Emilia το φυσικό περιβάλλον είναι « ο τρίτος δάσκαλος».
Conceptualizing Narratives in Gamified Information Systems
Creators: name: Schmidt-Kraepelin, Manuel
name: Warsinsky, Simon
name: Thiebes, Scott
name: Sunyaev, Ali
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2022

description: Converging hedonic and utilitarian elements under the label of gamification has become an important phenomenon in information systems over the last decade. Yet, academic discourse on narratives in gamified IS remains scarce. To advance scholarly engagement, this study recontextualizes the concept of narratives for gamified IS. Based on the theoretical lens of hedonic and utilitarian consumption, we conducted a hermeneutic literature review in which we engaged with existing conceptualizations of narratives in a total of 84 studies across various disciplines. Results include a basic conceptualization of narratives complemented by six claims that may shape our way of thinking about narratives in gamified IS. Our findings contribute to a more comprehensive understanding of narratives in gamified IS that goes beyond that of traditional game elements. It may serve as a cornerstone for further discourse on narratives and how to meaningfully design them in gamified IS.
Zooming into the broad line region of the gravitationally lensed quasar Q2237+0305 = the Einstein Cross: III. Determination of the size and structure of the CIV and CIII] emitting regions using microlensing
Creators: name: Sluse, D.
name: Schmidt, R.
name: Courbin, F.
name: Hutsemékers, D.
name: Meylan, G.
name: Eigenbrod, A.
name: Anguita, T.
name: Agol, E.
name: Wambsganss, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We aim to use microlensing taking place in the lensed quasar Q2237+0305 to study the structure of the broad line region and measure the size of the region emitting the CIV and CIII] lines. Methods: Based on 39 spectrophotometric monitoring data points obtained between Oct. 2004 and Dec. 2007, we derived lightcurves for the CIV and CIII] emission lines. We used three different techniques to analyse the microlensing signal. Different components of the lines (narrow, broad and very broad) are identified and studied. We built a library of simulated microlensing lightcurves that reproduce the signal observed in the continuum and in the lines provided only the source size is changed. A Bayesian analysis scheme is then developed to derive the size of the various components of the BLR. Results: 1. The half-light radius of the region emitting the CIV line is found to be R_CIV ~ 66^{+110}_{-46} lt-days = 0.06$^{+0.09}_{-0.04}$ pc = 1.7$^{+2.8}_{-1.1}$\,10$^{17}$ cm (at 68.3% CI). Similar values are obtained for CIII]. Relative sizes of the carbon-line and V-band continuum emitting-regions are also derived with median values of R(line)/R(cont) in the range 4 to 29, depending of the FWHM of the line component. 2. The size of the CIV emitting region agrees with the Radius-Luminosity relationship derived from reverberation mapping. Using the virial theorem we derive the mass of the black hole in Q2237+0305 to be M_BH ~ 10^{8.3+/-0.3} M_sun. 3. We find that the CIV and CIII] lines are produced in at least 2 spatially distinct regions, the most compact one giving rise to the broadest component of the line. The broad and narrow line profiles are slightly different for CIV and CIII]. 4. Our analysis suggests a different structure for the CIV and FeII+III emitting regions, with the latter produced in the inner part of the BLR or in a less extended emitting region than CIV.
description: 18 pages, 11 figures, To appear in Astronomy & Astrophysics Vol 528, A100 This version matches the published one (Updated ref. list and corrected typos)
Quasi-one-dimensional spin dynamics in LiV2O4: 1D-to-3D crossover as a possible origin of heavy fermion state
Creators: name: Kadono, R.
name: Koda, A.
name: Higemoto, W.
name: Ohishi, K.
name: Ueda, H.
name: Urano, C.
name: Kondo, S.
name: Nohara, M.
name: Takagi, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Spin fluctuation in LiV2O4 is revisited by examining the earlier result of muon spin rotation/ relaxation measurements. Instead of a relationship for the localized electron limit, one for itinerant electron systems between muon depolarization rate and spin fluctuation rate (ν_D) is employed to re-analyze data, which reveals that νD varies linearly with temperature (ν_D {\propto} T) over a range 10^8-10^{12} /s for 0.02 {\le} T < 102 K. Such a linear-T behavior as well as the magnitude of ν_D is fully consistent with that of the magnetic relaxation rate previously observed by inelastic neutron scattering (INS), demonstrating that μSR and INS have a common time window over the fluctuation spectrum. The linear-T dependence of ν_D is understood as a specific feature predicted by a Hubbard model for intersecting one-dimensional (1D) chains. This quasi-1D character, which is co-existent with enhanced uniform susceptibility at low temperatures, supports the scenario of 1D-to-3D crossover for the microscopic origin of heavy-fermion behavior in LiV2O4.
description: 5 pages, 3 figures
Optimal Gaussian Entanglement Swapping
Creators: name: Hoelscher-Obermaier, Jason
name: van Loock, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider entanglement swapping with general mixed two-mode Gaussian states and calculate the optimal gains for a broad class of such states including those states most relevant in communication scenarios. We show that for this class of states, entanglement swapping adds no additional mixedness, that is the ensemble average output state has the same purity as the input states. This implies that, by using intermediate entanglement swapping steps, it is, in principle, possible to distribute entangled two-mode Gaussian states of higher purity as compared to direct transmission. We then apply the general results on optimal Gaussian swapping to the problem of quantum communication over a lossy fiber and demonstrate that, contrary to negative conclusions in the literature, swapping-based schemes in fact often perform better than direct transmission for high input squeezing. However, an effective transmission analysis reveals that the hope for improved performance based on optimal Gaussian entanglement swapping is spurious since the swapping does not lead to an enhancement of the effective transmission. This implies that the same or better results can always be obtained using direct transmission in combination with, in general, less squeezing.
description: 10 pages, 2 figures, minor corrections in version 2 with one reference added (ref.9)