cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A proof-of-concept neural network for inferring parameters of a black hole from partial interferometric images of its shadow
Creators: name: Popov, Anton A.
name: Strokov, Vladimir
name: Surdyaev, Aleksey A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We test the possibility of using a convolutional neural network to infer the inclination angle of a black hole directly from the incomplete image of the black hole's shadow in the $uv$-plane. To this end, we develop a proof-of-concept network and use it to explicitly find how the error depends on the degree of coverage, type of input and coverage pattern. We arrive at a typical error of $10^\circ$ at a level of absolute coverage $1\%$ (for a pattern covering a central part of the $uv$-plane), $0.3\%$ (pattern covering the central part and the periphery, the $0.3\%$ referring to the central part only), and $14\%$ (uniform pattern). These numbers refer to a network that takes both amplitude and phase of the visibility function as inputs. We find that this type of network works best in terms of the error itself and its distribution for different angles. In addition, the same type of network demonstrates similarly good performance on highly blurred images mimicking sources nearing being unresolved. In terms of coverage, the magnitude of the error does not change much as one goes from the central pattern to the uniform one. We argue that this may be due to the presence of a typical scale which can be mostly learned by the network from the central part alone.
description: 12 pages, 10 figures. For the code and trained models, see https://bitbucket.org/cosmoVlad/neuro-repo
A Novel Approach for Periodic Assessment of Business Process Interoperability
Creators: name: Badr, Elmir
name: Bouchaib, Bounabat
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: Business collaboration networks provide collaborative organizations a favorable context for automated business process interoperability. This paper aims to present a novel approach for assessing interoperability of process driven services by considering the three main aspects of interoperation: potentiality, compatibility and operational performance. It presents also a software tool that supports the proposed assessment method. In addition to its capacity to track and control the evolution of interoperation degree in time, the proposed tool measures the required effort to reach a planned degree of interoperability. Public accounting of financial authority is given as an illustrative case study of interoperability monitoring in public collaboration network.
description: 9 pages, 8 figures
"Time operator": the challenge persists
Creators: name: Mielnik, Bogdan
name: Torres-Vega, Gabino
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Contrary to the conviction expressed by J. Kijowski [Phys. Rev. A 59, 897 (1999)] and shared in some other papers, the reasons to look for the 'time operator' in the context of the standard quantum doctrine of orthogonal projectors and self-adjoint observables are highly questionable. Some improved solutions in terms of POV measures invite critical discussions as well.
description: 7 pages, 3 figure
First-principles study of the phonon-limited mobility in n-type single-layer MoS2
Creators: name: Kaasbjerg, Kristen
name: Thygesen, Kristian S.
name: Jacobsen, Karsten W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the present work we calculate the phonon-limited mobility in intrinsic n-type single-layer MoS2 as a function of carrier density and temperature for T > 100 K. Using a first-principles approach for the calculation of the electron-phonon interaction, the deformation potentials and Fröhlich interaction in the isolated MoS2 layer are determined. We find that the calculated room-temperature mobility of ~410 cm^2 V^-1 s^-1 is dominated by optical phonon scattering via deformation potential couplings and the Fröhlich interaction with the deformation potentials to the intravalley homopolar and intervalley longitudinal optical phonons given by 4.1 x 10^8 eV/cm and 2.6 x 10^8 eV/cm, respectively. The mobility is weakly dependent on the carrier density and follows a μ~ T^-1 temperature dependence with γ= 1.69 at room temperature. It is shown that a quenching of the characteristic homopolar mode which is likely to occur in top-gated samples, boosts the mobility with 70 cm^2 V^-1 s^-1 and can be observed as a decrease in the exponent to γ= 1.52. Our findings indicate that the intrinsic phonon-limited mobility is approached in samples where a high-kappa dielectric that effectively screens charge impurities is used as gate oxide.
description: Submitted to Phys. Rev. B
Broad band time-resolved E_{p,i}--L_{iso} correlation in GRBs
Creators: name: Frontera, Filippo
name: Amati, Lorenzo
name: Guidorzi, Cristiano
name: Landi, Raffaella
name: Zand, Jean in't
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report results of a systematic study of the broad band (2--2000 keV) time resolved prompt emission spectra of a sample of gamma-ray bursts (GRBs) detected with both Wide Field Cameras on board the \sax\ satellite and the \batse\ experiment on board CGRO. In this first paper, we study the time-resolved dependence of the intrinsic peak energy $E_{p,i}$ of the $E F(E)$ spectrum on the corresponding isotropic bolometric luminosity $L_{\rm iso}$. The $E_{p,i}$--$L_{\rm iso}$ relation or the equivalent relation between $E_{p,i}$ and the bolometric released energy $E_{iso}$, derived using the time averaged spectra of long GRBs with known redshift, is well established, but its physical origin is still a subject of discussion. In addition, some authors maintain that these relations are the result of instrumental selection effects. We find that not only a relation between the measured peak energy $E_p$ and the corresponding energy flux, but also a strong $E_{p,i}$ versus $L_{\rm iso}$ correlation are found within each burst and merging together the time resolved data points from different GRBs. We do not expect significant instrumental selection effects that can affect the obtained results, apart from the fact that the GRBs in our sample are sufficiently bright to perform a time-resolved spectroscopy and that they have known redshift. If the fundamental physical process that gives rise to the GRB phenomenon does not depend on its brightness, we conclude that the found $E_{p,i}$ versus $L_{\rm iso}$ correlation within each GRB is intrinsic to the emission process, and that the correlations discovered by Amati et al. and Yonetoku et al. are likely not the result of selection effects. We also discuss the properties of the correlations found.
description: 27 pages,4 tables, 7 figure, accepted for publication in The Astrophysical Journal
The effects of symmetry on the dynamics of antigenic variation
Creators: name: Blyuss, K. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Dynamical Systems (math.DS)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: In the studies of dynamics of pathogens and their interactions with a host immune system, an important role is played by the structure of antigenic variants associated with a pathogen. Using the example of a model of antigenic variation in malaria, we show how many of the observed dynamical regimes can be explained in terms of the symmetry of interactions between different antigenic variants. The results of this analysis are quite generic, and have wider implications for understanding the dynamics of immune escape of other parasites, as well as for the dynamics of multi-strain diseases.
description: 21 pages, 4 figures; J. Math. Biol. (2012), Online First
Longitudinal investigation of middle ear function using multi-frequency, multi-component tympanometry from birth to six months of age
Creators: name: Cai, Anika
Publisher: name: University of British Columbia
Year: 2010

description: Objectives: The specific goals of this study were: 1) To understand the mechano-acoustical properties of the normal ear canal and middle ear and its maturation as a function of age using conventional and high frequency tympanometry 2) to establish tympanometric guidelines and normative data of the normal ear canal and middle ear in infants birth to 6 months of age. Design: Thirty-one normal hearing newborns were tested longitudinally in 1-month intervals up to 6 months of age for a total of 6 visits. Tympanograms were recorded and the distributions of patterns were analyzed using the Vanhuyse model at 226 Hz, 678 Hz, and 1000 Hz. Additionally, tympanometric recordings of admittance (Ya), susceptance (Ba), and conductance (Ga) were analyzed at 226 Hz and 1000 Hz probe tones. Lastly, the variation of compensated susceptance and conductance were recorded at extended frequencies from 250-2000 Hz in 50 Hz intervals for 16 infants. Results: Results showed that 1000 Hz tympanograms were the simplest to quantify as most recordings were single-peaked. 226 Hz and 678 Hz recordings were often multi-peaked. Both positive and negative admittance and susceptance tail values increased with age for 226 Hz and 1000 Hz. However, tail values at 1000 Hz increased faster than for 226 Hz. Negative tail values were smaller compared to positive tail values which resulted in smaller compensated admittance values for the positive tails compared to negative tails across all 6 visits. Admittance magnitude decreased with age at 226 Hz as susceptance increased and conductance decreased. However, at 1000 Hz, admittance magnitude increased as susceptance remained relatively constant and conductance increase. Conclusion: Results suggest that the infant middle ear and ear canal develop towards compliance with age although is not yet a purely acoustically compliant system by 6 months of age, particularly at high frequencies. An increase in volume in the middle ear cavity, reduction of middle ear debris, and overall decrease in resistive elements may be contributing to these changes. Significant differences were observed between each visit and warrant the use of age-specific norms when applying tympanometric data to infants below 6 months of age.
Η μουσική θεωρία του Αριστόξενου και μαρτυρίες επιβίωσης
Creators: name: Καραδήμος, Ρήγας-Μιχαήλ Ηλία
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Μουσική Θεωρία
Αρχαία ελληνική φιλοσοφία
Βυζαντινή μουσική

description: Στόχος της παρούσας εργασίας είναι η ανάδειξη του έργου του αρχαίου Έλληνα φιλοσόφου και μουσικού Αριστόξενου του Ταραντίνου. Ο Αριστόξενος παραλαμβάνει την θεωρία της μουσικής από τους προγενέστερους αλλά χαράσσει τη δική του φιλοσοφική τομή εισάγοντας την ακοή και την διάνοια ως κριτήρια αντίληψης της Μουσικής. Στην συνέχεια της εργασίας αναλύουμε τους τεχνικούς όρους της μουσικής θεωρίας από το έργο Αρμονικά Στοιχεία όπως φθόγγος, διάστημα, σύστημα, πυκνό κ.α. Στο τελευταίο και κυριότερο μέρος της εργασίας αναδεικνύεται η συνέχεια της θεωρίας του Αριστόξενου ανά τους αιώνες έως της μέρες μας αφού παρουσιάζονται πραγματείες βυζαντινών συγγραφέων όπως του Μιχαήλ Ψελλού, Μανουήλ Βρυέννιου, Αγιοπολίτη, και Χρυσάνθου εκ Μαδύτων. Με αυτόν τον τρόπο γίνεται αντιληπτό ότι η θεωρία της αρχαίας ελληνικής μουσικής όπως την κατέγραψε ο Αριστόξενος έχει τεράστια επιρροή στην ανατολική εκκλησιαστική η βυζαντινή, όπως έχει επικρατήσει να αποκαλείται μουσική.
description: The purpose of the present dissertation is to highlight the work of the ancient Greek philosopher and musician Aristoxenus of Taranta. Aristoxenus receives the musical theory from his predecessors, making though his own breakthrough by introducing the akoe (audition) and the dianoia (intellect), as the perceptual criteria of Music. Moving forward, the dissertation analyses the technical terms of the musical theory from the work Armonica Stoicheia, such as note, interval, system, density, etc. In the last and most important part of this dissertation Ι showcase the continuation of the theory of Aristoxenus through the ages and until today with the presentation of studies produced by byzantine scholars, such as Michael Psellos, Manuel Vryennios, Agiopolites, and Chysanthos of Madytos. This way it becomes apparent that the ancient Greek musical theory as it was presented by Aristoxenus had an immense influence in the the so-called byzantine music, as the eastern orthodox church music is named.
Pressure Prediction Model in Cross Laminated Timber Manufacturing for Low-Quality Lumber
Creators: name: Silva do Carmo, Dalisson Peterson
Publisher: name: Washington State University
Year: 2024
Subjects: Cross laminated timber
Mechanics of materials
Small diameter timber
Sustainability

description: Cross Laminated Timber (CLT) has been considered a feasible and sustainable option as a building material due to its advantageous mechanical properties, and for being a renewable resource with an extraordinary construction market in the coming years. Although there is an increasing demand for eco-friendly products such as CLT, a significant quantity of lumber has been neglected and tagged as out-of-grade material after visual grading. Low-quality timber has proved to be efficient when used in combination with high-grade materials for CLT panels as long as it does not require high-structural performance. However, because defects are said to prevent the lumber be flat during panel consolidation, wood with out-of-plane defects have been perceived as a problem to be avoided. This thesis proposes a reasonable model, based on mechanics of materials, that is capable of estimating the required pressure that can ensure intimate contact between layers of lumber during CLT manufacturing. The experimental and theoretical pressures were found to be no more than 45 kPa for the SPF samples used in this study, which is significantly less than 690 kPa, a standard pressure used by manufacturers. This new knowledge is an important step to reduce rejection rate of perceived low-quality lumber due to defects, such as twist, bow and cup by the wood industry as a CLT feedstock, especially in the case of lumber from small diameter timber (SDT). The use of planer machines to minimize cup deflections was critical to compress samples with the pressure values obtained in this investigation and successfully make lumber flat. Furthermore, shear and delamination tests indicate out-of-plane defects tend to not cause any relevant bonding issues for pressure application of 414 kPa. As a desired outcome of this study, the implementation of this pressure model could reduce losses and optimize industrial manufacturing process by expanding the use of low-quality materials such as SDT, positively impacting the wildfires on the west coast and creating economic growth opportunities.
On the analysis of axis-symmetric eddy-currents
Creators: name: Bryan, Geoffrey Raymond
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: This work is primarily concerned with the numerical simulation of linear time-harmonic electromagnetic field problems and to a lesser extent with some applications of these simulations to non-destructive testing. Chapter 1 provides a broad overview of the work and also pauses briefly to discuss the original inspiration of the project; eddy-current non-destructive testing. Chapter 2 looks in some depth at the underlying mathematical structure of the problem. With the aid of Tonti diagrams we systematically develop equations for the potential functions. The equations for the potentials as they originally stand do not have unique solutions. In order that there be a single unique solution to the problem gauge constraints must be enforced. One particular approach to enforcing gauge constraints, that of augmenting the operator, is treated in some depth and generality. In Chapter 3 having determined the equations governing the flow of eddy-currents and having determined that, given suitable constraints, they admit of only one solution the next problem to advance itself is how to determine this solution. Two broad classes of solution techniques are discussed: the calculus of variations and the method of weighted residuals. Following Tonti and Magri we show that every linear partial differential equation can, for a suitable choice of bi-linear form (see Appendix A) be regarded as the Euler-Lagrange condition of a functional. It is shown that none of the commonly applied variational principles are extremal principles for the general case of complex partial differential equations. With no obvious benefit accruing from a variational formulation of the eddy-current problem our attention was turned to the related technique of extended operators. It is shown that extended operators are especially useful in enforcing inhomogeneous boundary and interface conditions. Chapter 4 addresses itself to the problem of trying to interpret the flow of eddy-currents in terms of the few simple problems for which analytical solutions are known (Hammond's (1964) and Zaman's ( 1980) problems being the best known examples). The problems treated in Chapter 4 provide a basis for interpreting the results generated by the finite element program FINEEL developed in Chapter 5. Finally, in Chapter 5, same of the finer points of the finite element method are discussed: matrix assembly, solution techniques etc. and some typical results generated by the program are discussed in the light of previous results. Chapter 6 concludes the work by making a few suggestions as to which areas would profitably repay further research.
Phase Diagram of Commensurate Two-Dimensional Disordered Bose Hubbard Model
Creators: name: Söyler, Şebnem Güneş
name: Kiselev, Mikhail
name: Prokof'ev, Nikolay V.
name: Svistunov, Boris V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We establish the full groundstate phase diagram of disordered Bose-Hubbard model in two-dimensions at unity filling factor via quantum Monte Carlo simulations. Similarly to the three-dimensional case we observe extended superfluid regions persisting up to extremely large values of disorder and interaction strength which, however, have small superfluid fractions and thus low transition temperatures. In the vicinity of the superfluid--insulator transition of the pure system, we observe an unexpectedly weak---almost not resolvable---sensitivity of the critical interaction to the strength of (weak) disorder.
description: 4 pages, 5 figures
Performances of silicone coated high resistive bakelite RPC
Creators: name: Biswas, S.
name: Bhattacharya, Purba
name: Bhattacharya, S.
name: Bose, S.
name: Chattopadhyay, S.
name: Majumdar, N.
name: Mukhopadhyay, S.
name: Saha, S.
name: Viyogi, Y. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Performances of several single gap (gas gap 2 mm) prototype Resistive Plate Chambers (RPC) made of high resistive (ρ \sim 1010 - 1012 Ω cm) bakelite, commercially available in India have been studied in recent times. To make the inner electrode surfaces smooth, a thin coating of silicone has been applied. An efficiency > 90% and time resolution \sim 2 ns (FWHM) have been obtained for both the streamer and the avalanche mode. The induced charge distributions of those silicone coated RPC are studied and the results are presented. A numerical study on the effect of surface roughness of the resistive electrodes on the electric field of the device has been carried out using Garfield-neBEM code. A few results for a simplified model representing surface roughness, measured using a surface profilometer for the bakelite surfaces, have also been presented.
An Authoring System for Editing Lessons in Phonetic English in SMIL3.0
Creators: name: Merzougui, G.
name: Djoudi, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: One of the difficulties of teaching English is the prosody, including the stress. French learners have difficulties to encode this information about the word because it is irrelevant for them. Therefore, they have difficulty to produce this stress when they speak that language. Studies in this area have concluded that the dual-coding approach (auditory and visual) of a phonetic phenomenon helps a lot to improve its perception and memorization for novice learners. The aim of our work is to provide English teachers with an authoring named SaCoPh for editing multimedia courses that support this approach. This course is based on a template that fits the educational aspects of phonetics, exploiting the features of version 3.0 of the standard SMIL (Synchronized Multimedia Integration Language) for the publication of this course on the web.
description: 6 pages, 6 figures and 2 codes
TUMOR SINCRONICO DE MAMA Y RIÑON: REPORTE DE CASO
Creators: name: Tixi Aucáncela, Wilson Ivan
Publisher: name: Zenodo
Year: 2023

description: Antecedentes: Los tumores sincrónicos son patologías infrecuentes a nivel mundial. El carcinoma de mama y riñón sincrónicos son extremadamente raros, hasta la actualidad solo se han reportado 11 casos en toda la literatura médica.
Descripción del caso: Se trata de una paciente femenina de 60 años con antecedentes de hipertensión arterial, histerectomía + abdominoplastia (2002), acude a unidad de atención médica por presencia de nódulo a nivel de mama derecha, posterior a estudio imagenológicos de ecografía que reporta lesiones con alta sospecha de malignidad en mama derecha compatible con BIRADS 4C, y tomografía con contraste endovenoso que   revelan lesión nodular solida de la mama derecha, acompañada de adenopatía axilar derecha, se le  realiza biopsia posteriormente dando el diagnostico histopatológico molecular de carcinoma invasor con rasgos mucinosos luminal A, nottingham 1, más nódulo en mama izquierda sin diagnóstico. Durante la estancia hospitalaria se le realizaron exámenes complementarios imagenológicos el mismo que informa de una masa solida en riñón izquierdo. Por el cual se deriva a cirugía oncológica el cual bajo aprobación de comité se decide; tratamiento quirúrgico de mastectomía radical modificada + vaciamiento ganglionar para el carcinoma de mama derecha además congelación del nódulo de mama izquierda y biopsia renal guiada por ecografía en riñón izquierdo. Posterior a los informes de resultados biopsia a la paciente se establece los diagnósticos patológicos de: carcinoma mucinoso de mama derecha con estadificación patológica de pT2, pN0; En mama izquierda carcinoma in situ; En riñón izquierdo tumor renal hallazgos sugestivos de carcinoma de células renales cromófobo descartando así malignidad metastásica de origen mamario, se decide tratamiento quirúrgico de nefrectomía laparoscópica más hormonoterapia para el cáncer de mama, control médico por oncología y urología.
Gamma-rays from electrons accelerated by rotating magnetized White Dwarfs in Globular Clusters
Creators: name: Bednarek, W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recently a substantial part of globular cluster population has been established as GeV gamma-ray sources by the Fermi-LAT telescope. We investigate possible production of the high energy gamma-rays by relativistic electrons injected from the population of fast rotating, magnetized White Dwarfs within the globular cluster. These electrons comptonize the radiation field within the globular cluster. We conclude that gamma-rays produced by electrons accelerated by the whole population of White Dwarfs within a specific cluster are on the level of detectability of the future Cherenkov telescope array provided that a few thousand of magnetized White Dwarfs have been created uniformly during the lifetime of the globular cluster.
description: 22 pages, 7 figures, accepted to Journal of Physics G
Spitzer Observations of White Dwarfs: the Missing Planetary Debris Around DZ Stars
Creators: name: Xu, S.
name: Jura, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report a Spitzer/IRAC search for infrared excesses around white dwarfs, including 14 newly-observed targets and 16 unpublished archived stars. We find a substantial infrared excess around two warm white dwarfs --- J220934.84+122336.5 and WD 0843+516, the latter apparently being the hottest white dwarf known to display a close-in dust disk. Extending previous studies, we find that the fraction of white dwarfs with dust disks increases as the star's temperature increases; for stars cooler than 10,000 K, even the most heavily polluted ones do not have ~1000 K dust. There is tentative evidence that the dust disk occurrence is correlated with the volatility of the accreted material. In the Appendix, we modify a previous analysis to show that Poynting-Robertson drag might play an important role in transferring materials from a dust disk into a white dwarf's atmosphere.
description: Accepted for publication in the Astrophysical Journal, 38 pages, 14 figures, 7 tables
Comparing Energy Difference and Fidelity of Quantum States
Creators: name: Dodonov, Victor V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We look for upper bounds of the relative energy difference of two pure quantum states with a fixed fidelity between them or upper bounds of the fidelity for a fixed relative energy difference. The results depend on the concrete families of states chosen for the comparison. Exact analytical expressions are found for several popular sets of states: coherent, squeezed vacuum, binomial, negative binomial, and coherent phase states. Their consequence is that to guarantee, for example, the relative energy difference less than 10% for quite arbitrary (unknown) coherent states, the fidelity must exceed the level 0.995. For other kinds of states, the restrictions can be much stronger.
description: 9 pages
Spin Exciton Formation inside the Hidden Order Phase of CeB6
Creators: name: Akbari, Alireza
name: Thalmeier, Peter
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The heavy fermion metal CeB6 exhibits hidden order of antiferroquadrupolar (AFQ) type below T_Q=3.2K and subsequent antiferromagnetic (AFM) order at T_N=2.3K. It was interpreted as ordering of the quadrupole and dipole moments of a $Γ_8$ quartet of localised Ce $4f^1$ electrons. This established picture has been profoundly shaken by recent inelastic neutron scattering (G. Friemel et al., arXiv:1111.4151) that found the evolution of a feedback spin exciton resonance within the hidden order phase at the AFQ wave vector which is stabilized by the AFM order. We develop an alternative theory based on a fourfold degenerate Anderson lattice model, including both order parameters as particle-hole condensates of itinerant heavy quasiparticles. This explains in a natural way the appearance of the spin exciton resonance and the momentum dependence of its spectral weight, in particular around the AFQ vector and its rapid disappearance in the disordered phase. Analogies to the feedback effect in unconventional heavy fermion superconductors are pointed out.
description: 5 pages, 3 figures
Revisiting ordered dolomite formation: bridging computational insights with geological realities - Additional points and references
Creators: name: Bialik, Or M.
name: Petrash, Daniel A
name: Baldermann, Andre
name: Bontognali, Tomaso R. R.
name: Vasconcelos, Crisogono
name: Roeser, Patricia
name: Dittrich, Maria
name: Böttcher, Michael E.
name: Dietzel, Martin
name: Immenhauser, Adrian
Publisher: name: Zenodo
Year: 2023

description: Accompanying text to Revisiting ordered dolomite formation: bridging computational insights with rock-hard geological realities, a reply to Kim et al., 2023 (J. Kim, Y. Kimura, B. Puchala, T. Yamazaki, U. Becker, W. Sun, Dissolution enables dolomite crystal growth near ambient conditions. Science 382, 915–920 (2023)).
Revisiting ordered dolomite formation: bridging computational insights with geological realities - Additional points and references
Creators: name: Bialik, Or M.
name: Petrash, Daniel A
name: Baldermann, Andre
name: Bontognali, Tomaso R. R.
name: Vasconcelos, Crisogono
name: Swart, Peter K
name: Dittrich, Maria
name: Böttcher, Michael E.
name: Dietzel, Martin
name: Immenhauser, Adrian
Publisher: name: Zenodo
Year: 2023

description: Accompanying text to Revisiting ordered dolomite formation: bridging computational insights with rock-hard geological realities, a reply to Kim et al., 2023 (J. Kim, Y. Kimura, B. Puchala, T. Yamazaki, U. Becker, W. Sun, Dissolution enables dolomite crystal growth near ambient conditions. Science 382, 915–920 (2023)).
The CoRoT B-type binary HD50230: a prototypical hybrid pulsator with g-mode period and p-mode frequency spacings
Creators: name: Degroote, P.
name: Aerts, C.
name: Michel, E.
name: Briquet, M.
name: Pápics, P. I.
name: Amado, P.
name: Mathias, P.
name: Poretti, E.
name: Rainer, M.
name: Lombaert, R.
name: Hillen, M.
name: Morel, T.
name: Auvergne, M.
name: Baglin, A.
name: Baudin, F.
name: Catala, C.
name: Samadi, R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: B-type stars are promising targets for asteroseismic modelling, since their frequency spectrum is relatively simple. We deduce and summarise observational constraints for the hybrid pulsator, HD50230, earlier reported to have deviations from a uniform period spacing of its gravity modes. The combination of spectra and a high-quality light curve measured by the CoRoT satellite allow a combined approach to fix the position of HD50230 in the HR diagram. To describe the observed pulsations, classical Fourier analysis was combined with short-time Fourier transformations and frequency spacing analysis techniques. Visual spectra were used to constrain the projected rotation rate of the star and the fundamental parameters of the target. In a first approximation, the combined information was used to interpret multiplets and spacings to infer the true surface rotation rate and a rough estimate of the inclination angle. We identify HD50230 as a spectroscopic binary and characterise the two components. We detect the simultaneous presence of high-order g modes and low-order p and g-modes in the CoRoT light curve, but were unable to link them to line profile variations in the spectroscopic time series. We extract the relevant information from the frequency spectrum, which can be used for seismic modelling, and explore possible interpretations of the pressure mode spectrum.
description: 26 pages, 12+6 figures, accepted for publication in Astronomy and Astrophysics
Strong Electroweak Phase Transitions in the Standard Model with a Singlet
Creators: name: Espinosa, Jose R.
name: Konstandin, Thomas
name: Riva, Francesco
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: It is well known that the electroweak phase transition (EWPhT) in extensions of the Standard Model with one real scalar singlet can be first-order for realistic values of the Higgs mass. We revisit this scenario with the most general renormalizable scalar potential systematically identifying all regions in parameter space that develop, due to tree-level dynamics, a potential barrier at the critical temperature that is strong enough to avoid sphaleron wash-out of the baryon asymmetry. Such strong EWPhTs allow for a simple mean-field approximation and an analytic treatment of the free-energy that leads to very good theoretical control and understanding of the different mechanisms that can make the transition strong. We identify a new realization of such mechanism, based on a flat direction developing at the critical temperature, which could operate in other models. Finally, we discuss in detail some special cases of the model performing a numerical calculation of the one-loop free-energy that improves over the mean-field approximation and confirms the analytical expectations.
description: 48 pages, 14 figures
Living inquiry as pedagogy
Creators: name: Paterson, Misty Ann
Publisher: name: University of British Columbia
Year: 2010

description: This thesis details a journey of three teachers and eighteen grade six and seven students as they explored a curriculum that valued and interpreted lived experiences. Entitled Living Inquiry, this curriculum invited participants to attend to their being-in-the-world through an inquiry into four guiding, existential themes. The intention of this phenomenological/hermeneutical study was to interpret the participants’ responses to Living Inquiry and further, to begin to understand the possibilities and vulnerabilities of Living Inquiry as a pedagogical/curricular experience within an often imposing neoliberal teaching/learning context. The teacher researcher is the primary storyteller as she documents her own introduction as a student of Living Inquiry, the impetus of the thesis, to the translation of the course for her grade six and seven students in a local public elementary school classroom, and finally to the research process of documenting, interpreting, and understanding this journey. Spanning over two years of classroom experience and formal research, Living Inquiry as Pedagogy brings together the voices of children, education theorists such as Aoki, Jardine, Smith, and van Manen, and teachers, including a professional photographer and a curriculum consultant/university professor, as they begin to make sense of the relevance and significance of Living Inquiry as a practice and a pedagogy. The study culminates with a discussion around the teaching implications and responsibilities of Living Inquiry as well as a consideration of how the inquiry served to transform the researcher’s thinking about the purpose of education and living well with children.
Orbital Separation Amplification in Fragile Binaries with Evolved Components
Creators: name: Johnston, Kyle B.
name: Oswalt, Terry D.
name: Valls-Gabaud, David
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The secular stellar mass-loss causes an amplification of the orbital separation in fragile, common proper motion, binary systems with separations of the order of 1000 A.U. In these systems, companions evolve as two independent coeval stars as they experience negligible mutual tidal interactions or mass transfer. We present models for how post-main sequence mass-loss statistically distorts the frequency distribution of separations in fragile binaries. These models demonstrate the expected increase in orbital seapration resulting from stellar mass-loss, as well as a perturbation of associated orbital parameters. Comparisons between our models and observations resulting from the Luyten survey of wide visual binaries, specifically those containing MS and white-dwarf pairs, demonstrate a good agreement between the calculated and the observed angular separation distribution functions.
description: 37 pages, 13 figures
Manipulating whitefly behaviour using plant resistance, reduced-risk sprays, trap crops and yellow sticky traps for improved control for wweet pepper greenhouse crops
Creators: name: Moreau, Tara
Publisher: name: University of British Columbia
Year: 2010

description: The greenhouse whitefly, Trialeurodes vaporariorum (Hemiptera, Aleyrodidae) has been identified as a priority pest for multiple vegetable and ornamental greenhouse crops. The deliberate manipulation of insect behaviour for the purpose of pest management is of great interest to greenhouse growers looking to reduce pesticide use in commercial sweet pepper (Capsicum annuum) greenhouses. In the following, alternative control tactics were individually evaluated in the laboratory and greenhouse to identify the greatest modifiers of T. vaporariorum settling and oviposition behaviours on peppers. The four tactics tested were plant resistance (PR), reduced-risk sprays (RRSs), trap crops (TCs) and yellow sticky traps (YSTs). The individual tactics that were most effective at reducing adult and egg populations on peppers were combined to determine if the simultaneous use of behaviour modifying tactics enhanced whitefly control. Results indicated that the greatest modifiers of T. vaporariorum settling and oviposition behaviours on peppers were YSTs > TCs > RRSs > PR. Combining YSTs and TCs with RRRs indicated that T. vaporariorum settling and oviposition can be directed away from peppers to traps. Although whitefly settling was lowest on peppers in the TC + YST + RRS combination, there was no significant benefit of using three tactics (TC + YST + RRS) over two tactics (TC + YST). Trap crops used in combination with yellow sticky traps reduced adult densities on peppers by 53% and provided a more consistent and effective method of reducing whiteflies on peppers than using reduced-risk sprays. The use of YSTs + TCs is recommended as an alterative whitefly control tactic for sweet peppers. Implications of these findings in the context of whitefly host selection and as a potential greenhouse management strategy are discussed.
Domain-Specific Deep Learning Feature Extractor for Diabetic Foot Ulcer Detection
Creators: name: Basiri, Reza
name: Popovic, Milos R.
name: Khan, Shehroz S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Diabetic Foot Ulcer (DFU) is a condition requiring constant monitoring and evaluations for treatment. DFU patient population is on the rise and will soon outpace the available health resources. Autonomous monitoring and evaluation of DFU wounds is a much-needed area in health care. In this paper, we evaluate and identify the most accurate feature extractor that is the core basis for developing a deep-learning wound detection network. For the evaluation, we used mAP and F1-score on the publicly available DFU2020 dataset. A combination of UNet and EfficientNetb3 feature extractor resulted in the best evaluation among the 14 networks compared. UNet and Efficientnetb3 can be used as the classifier in the development of a comprehensive DFU domain-specific autonomous wound detection pipeline.
description: 5 pages, 2 figures, 3 tables, 2022 IEEE International Conference on Data Mining Workshops
title: Οπτικός γραμματισμός και infographics στη διδασκαλία της Γεωγραφίας στη ΣΤ δημοτικού
title: Visual literacy and infographics in teaching Geography on the 6th grade of primary school
titleType: AlternativeTitle
Creators: name: Μαγουλά, Όλγα-Ευαγγελία
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Πολυτροπικότητα
Infographics
Πληροφοριογραφήματα
Οπτικός γραμματισμός
Γεωγραφία

description: Η παρούσα διπλωματική εργασία στοχεύει στη διερεύνηση και την ανάλυση του ρόλου του οπτικού γραμματισμού και των πληροφοριογραφημάτων (infographics) στη διδασκαλία της Γεωγραφίας στην πρωτοβάθμια εκπαίδευση. Η σημασία της χρήσης των πληροφοριογραφημάτων είναι σημαντική καθώς μέσω αυτών μπορεί να καλλιεργηθεί ο οπτικός γραμματισμός των μαθητών. Η ανάπτυξη του θέματος έγινε μέσα από την ερευνητική ανασκόπηση και την διδακτική παρέμβαση σε μαθητές της Στ’ τάξης οι οποίοι δημιούργησαν τέσσερα πληροφοριογραφήματα για το μάθημα της Γεωγραφίας και τους μεγάλους ποταμούς της Γης.
title: Clinical Post-SARS-CoV-2 Infection Scenarios in Vaccinated and Non-Vaccinated Cancer Patients in Three German Cancer Centers: A Retrospective Analysis
Creators: name: Shumilov, Evgenii
name: Aperdannier, Lena
name: Schmidt, Nicole
name: Szuszies, Christoph
name: Neeße, Thomas Albrecht
name: Hoffknecht, Petra
name: Khandanpour, Cyrus
name: Mikesch, Jan-Henrik
name: Stelljes, Matthias
name: Boeckel, Göran Ramin
name: Tepasse, Phil-Robin
name: Reitnauer, Lea
name: Koch, Raphael
name: Hasenkamp, Justin
name: Bacher, Ulrike
name: Scheithauer, Simone
name: Trümper, Lorenz
name: Schmitz, Norbert
name: Wulf, Gerald
name: Kerkhoff, Andrea
name: Lenz, Georg
name: Krekeler, Carolin
name: Bleckmann, Annalen
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 610 Medicine and health

description: COVID-19 vaccines have become an integral element in the protection of cancer patients against SARS-CoV-2. To date, there are no direct comparisons of the course of COVID-19 infection in cancer patients between the pre- and post-vaccine era. We analyzed SARS-CoV-2 infections and their impact on cancer in COVID-19 vaccinated and non-vaccinated patients from three German cancer centers. Overall, 133 patients with SARS-CoV-2 were enrolled in pre- and post-vaccine eras: 84 non-vaccinated and 49 vaccinated, respectively. A mild course of COVID-19 was documented more frequently in vaccinated patients (49% vs. 29%), while the frequency of severe and critical courses occurred in approximately one-half of the non-vaccinated patients (22% vs. 42%, p = 0.023). Particularly, patients with hematologic neoplasms benefited from vaccination in this context (p = 0.031). Admissions to intermediate- and intensive-care units and the necessity of non-invasive and invasive respiratory support were reduced by 71% and 50% among vaccinated patients, respectively. The median length of admission was 11 days for non-vaccinated and 5 days for vaccinated patients (p = 0.002). COVID-19 mortality was reduced by 83% in vaccinated patients (p = 0.046). Finally, the median time from SARS-CoV-2 infection to restarting cancer therapy was 12 and 26 days among vaccinated and non-vaccinated groups, respectively (p = 0.002). Although this study does not have enough power to perform multivariate analyses to account for confounders, it provides data on COVID-19 in non-vaccinated and vaccinated cancer patients and illustrates the potential benefits of COVID-19 vaccines for these patients.
description: Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).
Fourier, Gauss, Fraunhofer, Porod and the Shape from Moments Problem
Creators: name: Gallatin, Gregg M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show how the Fourier transform of a shape in any number of dimensions can be simplified using Gauss's law and evaluated explicitly for polygons in two dimensions, polyhedra three dimensions, etc. We also show how this combination of Fourier and Gauss can be related to numerous classical problems in physics and mathematics. Examples include Fraunhofer diffraction patterns, Porods law, Hopfs Umlaufsatz, the isoperimetric inequality and Didos problem. We also use this approach to provide an alternative derivation of Davis's extension of the Motzkin-Schoenberg formula to polygons in the complex plane.
description: 21 pages, no figures
Flashing subdiffusive ratchets in viscoelastic media
Creators: name: Kharchenko, Vasyl
name: Goychuk, Igor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study subdiffusive ratchet transport in periodically and randomly flashing potentials. Central Brownian particle is elastically coupled to surrounding auxiliary Brownian quasi-particles which account for the influence of viscoelastic environment. Similar to standard dynamical modeling of Brownian motion, the external force influences only the motion of central particle not affecting directly the environmental degrees of freedom (see video). Just a handful of auxiliary Brownian particles suffice to model subdiffusion over many temporal decades. Time-modulation of the potential violates the symmetry of thermal detailed balance and induces anomalous subdiffusive current which exhibits a remarkable quality at low temperatures, as well as a number of other surprising features such as saturation at low temperatures, and multiple inversions of the transport direction upon a change of the driving frequency in nonadiabatic regime. Our study generalizes classical Brownian motors towards operating in sticky viscoelastic environments like cytosol of biological cells or dense polymer solutions.
On the decay of turbulence in plane Couette flow
Creators: name: Manneville, Paul
Publisher: name: arXiv
Year: 2011
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The decay of turbulent and laminar oblique bands in the lower transitional range of plane Couette flow is studied by means of direct numerical simulations of the Navier--Stokes equations. We consider systems that are extended enough for several bands to exist, thanks to mild wall-normal under-resolution considered as a consistent and well-validated modelling strategy. We point out a two-stage process involving the rupture of a band followed by a slow regression of the fragments left. Previous approaches to turbulence decay in wall-bounded flows making use of the chaotic transient paradigm are reinterpreted within a spatiotemporal perspective in terms of large deviations of an underlying stochastic process.
description: ETC13 Conference Proceedings, 6 pages, 5 figures
Angular Dependence of the High-Magnetic-Field Phase Diagram of URu2Si2
Creators: name: Scheerer, Gernot W.
name: Knafo, William
name: Aoki, Dai
name: Flouquet, Jacques
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present measurements of the magnetoresistivity RHOxx of URu2Si2 single crystals in high magnetic fields up to 60 T and at temperatures from 1.4 K to 40 K. Different orientations of the magnetic field have been investigated permitting to follow the dependence on Q of all magnetic phase transitions and crossovers, where Q is the angle between the magnetic field and the easy-axis c. We find out that all magnetic transitions and crossovers follow a simple 1/cos(Q) -law, indicating that they are controlled by the projection of the field on the c-axis.