cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An age-structured SEIR model for COVID--19 incidence in Dublin, Ireland with framework for evaluating health intervention cost
Creators: name: Jaouimaa, Fatima-Zahra
name: Dempsey, Daniel
name: van Osch, Suzanne
name: Kinsella, Stephen
name: Burke, Kevin
name: Wyse, Jason
name: Sweeney, James
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: General Economics (econ.GN)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Biological sciences
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: Strategies adopted globally to mitigate the threat of COVID-19 have primarily involved lockdown measures with substantial economic and social costs with varying degrees of success. Morbidity patterns of COVID-19 variants have a strong association with age, while restrictive lockdown measures have association with negative mental health outcomes in some age groups. Reduced economic prospects may also afflict some age cohorts more than others. Motivated by this, we propose a model to describe COVID-19 community spread incorporating the role of age-specific social interactions. Through a flexible parameterisation of an age-structured deterministic Susceptible Exposed Infectious Removed (SEIR) model, we provide a means for characterising different forms of lockdown which may impact specific age groups differently. Social interactions are represented through age group to age group contact matrices, which can be trained using available data and are thus locally adapted. This framework is easy to interpret and suitable for describing counterfactual scenarios, which could assist policy makers with regard to minimising morbidity balanced with the costs of prospective suppression strategies. Our work originates from an Irish context and we use disease monitoring data from February 29th 2020 to January 31st 2021 gathered by Irish governmental agencies. We demonstrate how Irish lockdown scenarios can be constructed using the proposed model formulation and show results of retrospective fitting to incidence rates and forward planning with relevant ``what if/instead of'' lockdown counterfactuals with uncertainty quantification. Our formulation is agnostic to a specific locale, in that lockdown strategies in other regions can be straightforwardly encoded using this model. The methods we describe are made publicly available online through an accessible and easy to use web interface.
Upper bounds on the low-frequency stochastic gravitational wave background from pulsar timing observations: current limits and future prospects
Creators: name: Jenet, F. A.
name: Hobbs, G. B.
name: van Straten, W.
name: Manchester, R. N.
name: Bailes, M.
name: Verbiest, J. P. W.
name: Edwards, R. T.
name: Hotan, A. W.
name: Sarkissian, J. M.
name: Ord, S. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using a statistically rigorous analysis method, we place limits on the existence of an isotropic stochastic gravitational wave background using pulsar timing observations. We consider backgrounds whose characteristic strain spectra may be described as a power-law dependence with frequency. Such backgrounds include an astrophysical background produced by coalescing supermassive black-hole binary systems and cosmological backgrounds due to relic gravitational waves and cosmic strings. Using the best available data, we obtain an upper limit on the energy density per unit logarithmic frequency interval of Ω^{\rm SMBH}_g(1/8yr) h^2 <= 1.9 x 10^{-8} for an astrophysical background which is five times more stringent than the earlier Kaspi et al. (1994) limit of 1.1 x 10^{-7}. We also provide limits on a background due to relic gravitational waves and cosmic strings of Ω^{\rm relic}_g(1/8yr) h^2 <= 2.0 x 10^{-8} and Ω^{\rm cs}_g(1/8yr) h^2 <= 1.9 x 10^{-8} respectively. All of the quoted upper limits correspond to a 0.1% false alarm rate together with a 95% detection rate. We discuss the physical implications of these results and highlight the future possibilities of the Parkes Pulsar Timing Array project. We find that our current results can 1) constrain the merger rate of supermassive binary black hole systems at high red shift, 2) rule out some relationships between the black hole mass and the galactic halo mass, 3) constrain the rate of expansion in the inflationary era and 4) provide an upper bound on the dimensionless tension of a cosmic string background.
description: Accepted by ApJ
Analytical approximations for curved primordial power spectra (supplementary material)
Creators: name: Thavanesan, Ayngaran
Publisher: name: Zenodo
Year: 2020

description: These are the plot generating scripts and computer algebra that were used to compute results for aXiv:2009.05573 . Python script and data for generating figures: PaperPlots.py, COM_PowerSpect_CMB-TT-full_R3.01.txt Computer algebra for paper derivations: PaperDerivations.nb, EigenvectorsofA_jMatrix.m Please contact at735@cantab.ac.uk with any queries. Software used: CLASS https://github.com/lesgourg/class_public anesthetic https://github.com/williamjameshandley/anesthetic
Alondra común – Alauda arvensis Linnaeus, 1758
Creators: name: Pérez Granados, Cristian
name: Serrano-Davies, Eva
name: Hervás, Israel
name: Herranz, Jesús
name: Salvador Milla, Alfredo
Publisher: name: Salvador Milla, Alfredo
Year: 2016

description: Aves - Orden Passeriformes - Familia Alaudidae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/. Versiones anteriores: 21-10-2014
description: A comprehensive review of the natural history of the skylark Alauda arvensis in Spain.
Abelian Hurwitz-Hodge integrals
Creators: name: Johnson, P.
name: Pandharipande, R.
name: Tseng, H. -H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Hodge classes on the moduli space of admissible covers with monodromy group G are associated to irreducible representations of G. We evaluate all linear Hodge integrals over moduli spaces of admissible covers with abelian monodromy in terms of multiplication in an associated wreath group algebra. In case G is cyclic and the representation is faithful, the evaluation is in terms of double Hurwitz numbers. In case G is trivial, the formula specializes to the well-known result of Ekedahl-Lando-Shapiro-Vainshtein for linear Hodge integrals over the moduli space of curves in terms of single Hurwitz numbers.
description: 25 pages, revised version. Calculation of 1-point Hurwitz-Hodge series added
Can we study Quark Matter in the Quenched Approximation?
Creators: name: Giudice, Pietro
name: Hands, Simon
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study a quenched SU(2) lattice gauge theory in which, in an attempt to distinguish between timelike and spacelike gauge fields, the gauge ensemble {U_mu} is generated from a 3 dimensional gauge-Higgs model, the timelike link variables being "reconstructed" from the Higgs fields. The resulting ensemble is used to study quenched quark propagation with non-zero chemical potential mu; in particular, the quark density, chiral and superfluid condensates, meson, baryon and gauge-fixed quark propagators are all studied as functions of mu. While it proves possible to alter the strength of the inter-quark interaction by changing the parameters of the dimensionally reduced model, there is no evidence for any region of parameter space where quarks exhibit deconfined behaviour or thermodynamic observables scale as if there were a Fermi surface.
description: 31 pages, 20 figures, enhanced discussion and analysis of finite volume effects, version accepted for publication by Nucl. Phys. B
Semiclassical two-step model for ionization by a strong laser pulse: Further developments and applications
Creators: name: Shvetsov-Shilovski, N. I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We review the semiclassical two-step model for strong-field ionization. The semiclassical two-step model describes quantum interference and accounts for the ionic potential beyond the semiclassical perturbation theory. We discuss formulation and implementation of this model, its further developments, as well as some of the applications. The reviewed applications of the model include strong-field holography with photoelectrons, multielectron polarization effects in ionization by an intense laser pulse, and strong-field ionization of the hydrogen molecule.
description: 23 pages, 12 figures
A remark on the low mass dilepton yield in heavy ion collisions
Creators: name: Fialkowski, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The recent data on the enhancement of the low mass dilepton yield in heavy ion collisions are interpreted as an effect of the "prolonged life" of resonances in the hadron gas phase. The value of the enhancement factor gives an upper limit for the duration time of this phase.
description: Minor changes in text, one reference added. Version to be published in the XXXVI ISMD proceedings, Brazilian Journal of Physics
VLT and ACS observations of RDCS J1252.9-2927: dynamical structure and galaxy populations in a massive cluster at z=1.237
Creators: name: Demarco, R.
name: Rosati, P.
name: Lidman, C.
name: Girardi, M.
name: Nonino, M.
name: Rettura, A.
name: Strazzullo, V.
name: van der Wel, A.
name: Ford, H. C.
name: Mainieri, V.
name: Holden, B. P.
name: Stanford, S. A.
name: Blakeslee, J. P.
name: Gobat, R.
name: Postman, M.
name: Tozzi, P.
name: Overzier, R. A.
name: Zirm, A. W.
name: Benitez, N.
name: Homeier, N. L.
name: Illingworth, G. D.
name: Infante, L.
name: Jee, M. J.
name: Mei, S.
name: Menanteau, F.
name: Motta, V.
name: Zheng, W.
name: Clampin, M.
name: Hartig, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results from an extensive spectroscopic survey, carried out with VLT FORS, and from an extensive multiwavelength imaging data set from the HST Advanced Camera for Surveys and ground based facilities, of the cluster of galaxies RDCS J1252.9-2927. We have spectroscopically confirmed 38 cluster members in the redshift range 1.22 < z < 1.25. A cluster median redshift of z=1.237 and a rest-frame velocity dispersion of 747^{+74}_{-84} km/s are obtained. Using the 38 confirmed redshifts, we were able to resolve, for the first time at z > 1, kinematic structure. The velocity distribution, which is not Gaussian at the 95% confidence level, is consistent with two groups that are also responsible for the projected east-west elongation of the cluster. The groups are composed of 26 and 12 galaxies with velocity dispersions of 486^{+47}_{-85} km/s and 426^{+57}_{-105} km/s, respectively. The elongation is also seen in the intracluster gas and the dark matter distribution. This leads us to conclude that RDCS J1252.9-2927 has not yet reached a final virial state. We extend the analysis of the color-magnitude diagram of spectroscopic members to more than 1 Mpc from the cluster center. The scatter and slope of non-[OII]-emitting cluster members in the near-IR red sequence is similar to that seen in clusters at lower redshift. Furthermore, most of the galaxies with luminosities greater than ~ K_s*+1.5 do not show any [OII], indicating that these more luminous, redder galaxies have stopped forming stars earlier than the fainter, bluer galaxies. Our observations provide detailed dynamical and spectrophotometric information on galaxies in this exceptional high-redshift cluster, delivering an in-depth view of structure formation at this epoch only 5 Gyr after the Big Bang.
description: 29 pages. 16 figures. ApJ accepted. Tables 2,3 and 5, figure 1 and the full figure 5 will be available in the paper and electronic editions from ApJ. v2: minor corrections to the abstract and text to match the Journal's version
Waiting for service : consumer views of the aversiveness and duration of waiting, and resulting impact on specific and global service evaluations
Creators: name: Taylor, Shirley
Publisher: name: University of British Columbia
Year: 2011

description: Waiting for service is common in many purchase situations. As such, it is important to understand how consumers react to waiting. Only then can appropriate actions be taken to reduce any aversive aspects of waiting and alleviate any negative consequences that may result from the wait. This research focused on how consumers react to waiting for service. Specifically, three reactions were examined: (1) consumers' perceptions of wait aversiveness, and the circumstances under which consumers found waiting aversive or unpleasant, (2) consumers' perceptions of felt duration, and the circumstances under which waits were felt to be longer than they actually were, and (3) the resulting service evaluations, in particular, the extent to which, and the circumstances under which waits impacted on consumers' evaluations of: (a) punctuality of service, (b) overall service quality and (c) other service attributes. A model of a consumer's wait experience was proposed and used as a framework to examine these three issues. A quasi-experimental setting involving delays in passenger airline travel was chosen for the empirical study. Delayed passengers were questioned regarding their perceptions of wait aversiveness and duration. In addition, their pre-boarding feelings and responses on flight service evaluations were compared to those of nondelayed passengers. The results of the empirical test suggest that perceptions of wait aversiveness were associated with: perceived airline control over the wait, higher perceived consequences of waiting, such as inconvenience and financial costs, and higher levels of affective costs such as annoyance, anger, frustration, uncertainty, boredom, uneasiness and helplessness. Many of these costs increased as the actual wait duration and time pressures increased, and as the degree to which time was "filled" decreased. Longer felt duration was associated with longer actual durations and increased wait aversivenness. The results also suggest that waiting did affect consumers' overall evaluations of service, their evaluations of specific service attributes and the relative importance of these attributes in predicting the overall evaluation. Implications for management and directions for further research were then discussed.
Modelling stalled airfoils
Creators: name: Yeung, William Wai-Hung
Publisher: name: University of British Columbia
Year: 2011

description: The thesis deals with some new applications of the wake source model, a two-dimensional incompressible potential flow model used for bodies experiencing flow separation. The body contour is conformally mapped to a circle, for which the flow problem is solved using source singularities to create free streamlines simulating the separating shear layers. In common with other inviscid theories, it generally requires the pressure in the separated flow region, and the location of separation if boundary-layer controlled. Different mapping sequences and flow models have been constructed for the following five problems, 1. the trailing-edge stall for single element airfoils, 2. flat plates with separation bubbles, 3. separation bubbles upstream of spoilers with downstream wakes, 4. spoiler/slotted flap combinations, at which the spoiler inclination is arbitrary, and 5. two-element airfoils near (trailing-edge) stall. Predictions of pressure distribution are compared with wind tunnel measurements, and good agreement is found in cases 1 and 5. The initial shape of the separation streamlines also appears to be satisfactory. Results in cases 2 and 3 are promising although more work is needed to improve the bubble shapes and their pressure distributions. Partial success has been achieved on spoiler/ slotted flap configurations, depending on the spoiler inclination. For strong wake effect on the flap (e. g. δ = 90° ), the model predicts a very high suction peak over it. Whereas the experimental data resemble a stalled distribution even though flow visualization indicates the flap to be unstalled. This may be related to a limitation of the method, also noted in the separation-bubble problems, that it cannot specify a complete boundary condition on a free streamline. This discrepancy diminishes as the spoiler angle becomes smaller (e. g. δ = 30° ) in the cases of higher incidences so that the wake boundary tugs away from the flap sooner.
Multiscale modeling of biopolymer translocation through a nanopore
Creators: name: Fyta, Maria
name: Melchionna, Simone
name: Kaxiras, Efthimios
name: Succi, Sauro
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We employ a multiscale approach to model the translocation of biopolymers through nanometer size pores. Our computational scheme combines microscopic Langevin molecular dynamics (MD) with a mesoscopic lattice Boltzmann (LB) method for the solvent dynamics, explicitly taking into account the interactions of the molecule with the surrounding fluid. Both dynamical and statistical aspects of the translocation process were investigated, by simulating polymers of various initial configurations and lengths. For a representative molecule size, we explore the effects of important parameters that enter in the simulation, paying particular attention to the strength of the molecule-solvent coupling and of the external electric field which drives the translocation process. Finally, we explore the connection between the generic polymers modeled in the simulation and DNA, for which interesting recent experimental results are available.
description: 8 pages, 5 figures, to appear in Lecture Notes in Computer Science
Anomalous suppression of the shot noise in a nanoelectromechanical system
Creators: name: Haupt, F.
name: Cavaliere, F.
name: Fazio, R.
name: Sassetti, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper we report a relaxation-induced suppression of the noise for a single level quantum dot coupled to an oscillator with incoherent dynamics in the sequential tunneling regime. It is shown that relaxation induces qualitative changes in the transport properties of the dot, depending on the strength of the electron-phonon coupling and on the applied voltage. In particular, critical thresholds in voltage and relaxation are found such that a suppression below 1/2 of the Fano factor is possible. Additionally, the current is either enhanced or suppressed by increasing relaxation, depending on bias being greater or smaller than the above threshold. These results exist for any strength of the electron-phonon coupling and are confirmed by a four states toy model.
description: 7 pages, 7 eps figures, submitted to PRB; minor changes in the introduction
Bayesian Model Selection via Mean-Field Variational Approximation
Creators: name: Zhang, Yangfan
name: Yang, Yun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This article considers Bayesian model selection via mean-field (MF) variational approximation. Towards this goal, we study the non-asymptotic properties of MF inference under the Bayesian framework that allows latent variables and model mis-specification. Concretely, we show a Bernstein von-Mises (BvM) theorem for the variational distribution from MF under possible model mis-specification, which implies the distributional convergence of MF variational approximation to a normal distribution centering at the maximal likelihood estimator (within the specified model). Motivated by the BvM theorem, we propose a model selection criterion using the evidence lower bound (ELBO), and demonstrate that the model selected by ELBO tends to asymptotically agree with the one selected by the commonly used Bayesian information criterion (BIC) as sample size tends to infinity. Comparing to BIC, ELBO tends to incur smaller approximation error to the log-marginal likelihood (a.k.a. model evidence) due to a better dimension dependence and full incorporation of the prior information. Moreover, we show the geometric convergence of the coordinate ascent variational inference (CAVI) algorithm under the parametric model framework, which provides a practical guidance on how many iterations one typically needs to run when approximating the ELBO. These findings demonstrate that variational inference is capable of providing a computationally efficient alternative to conventional approaches in tasks beyond obtaining point estimates, which is also empirically demonstrated by our extensive numerical experiments.
The Oddity of the Saturnian System
Creators: name: Illes-Almar Erzsebet
Publisher: name: Zenodo
Year: 2021
Subjects: Saturnian satellite system, Iapetus, Hyperion, origin of ice-rings, Nice model

description: On the basis of Cassini images and of some diagrams a few provocative questions are raised in connection with the Saturnian system as a whole, namely the origin and evolution of the Saturnian ice-ring system, as well as that of Hyperion and Iapetus.
Giosuè Carducci nella cultura primonovecentesca
Giosuè Carducci in the Early Twentieth-Century Culture
Creators: name: Merci, Alessandro <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: L-FIL-LET/10 Letteratura italiana

description: La tesi indaga la ricezione di Carducci nella cultura italiana ed europea dei primi decenni del XX secolo attraverso lo studio delle commemorazioni, delle memorie, degli articoli e dei saggi dedicati al poeta maremmano, al fine di mettere in luce il complesso ruolo ricoperto dallo scrittore e le strumentalizzazioni di cui è stato vittima.
description: The work studies the role played by the poet Giosuè Carducci in the italian and european culture of the first decades of the twentieth-century, examinating commemorations, memories, articles and essays which deal with the poet.
Ozsvath-Szabo and Rasmussen invariants of cable knots
Creators: name: Van Cott, Cornelia A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25

description: We study the behavior of the Ozsvath-Szabo and Rasmussen knot concordance invariants tau and s on K(m,n), the (m,n)-cable of a knot K where m and n are relatively prime. We show that for every knot K and for any fixed positive integer m, both of the invariants evaluated on K(m,n) differ from their value on the torus knot T(m,n) by a fixed constant for all but finitely many n>0. Combining this result together with Hedden's extensive work on the behavior of tau on (m,mr+1)-cables yields bounds on the value of tau on any (m,n)-cable of K. In addition, several of Hedden's obstructions for cables bounding complex curves are extended.
description: Several corollaries are added, and the exposition is extended
Review of Beyond Jihad: The Pacifist Tradition in West African Islam. By Lamin Sanneh. New York: Oxford University Press, 2016. Pp. xv + 352. $34.95.
Creators: name: Donaldson, Coleman
Publisher: name: Zenodo
Year: 2019
Subjects: West Africa
Islam
West African Islam

description: This is the accepted version of the following book note: Donaldson, Coleman. 2019. Review of “Beyond Jihad: The Pacifist Tradition in West African Islam. By Lamin Sanneh. New York: Oxford University Press, 2016. Pp. Xv + 352. $34.95.” Religious Studies Review 45 (2): 217–18., which has been published in final form at https://doi.org/10.1111/rsr.13888
description: Research supported by Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 344888349
Learning physical properties of anomalous random walks using graph neural networks
Creators: name: Verdier, Hippolyte
name: Duval, Maxime
name: Laurent, François
name: Cassé, Alhassan
name: Vestergaard, Christian
name: Masson, Jean-Baptiste
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Biological Physics (physics.bio-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Single particle tracking allows probing how biomolecules interact physically with their natural environments. A fundamental challenge when analysing recorded single particle trajectories is the inverse problem of inferring the physical model or class of models of the underlying random walks. Reliable inference is made difficult by the inherent stochastic nature of single particle motion, by experimental noise, and by the short duration of most experimental trajectories. Model identification is further complicated by the fact that main physical properties of random walk models are only defined asymptotically, and are thus degenerate for short trajectories. Here, we introduce a new, fast approach to inferring random walk properties based on graph neural networks (GNNs). Our approach consists in associating a vector of features with each observed position, and a sparse graph structure with each observed trajectory. By performing simulation-based supervised learning on this construct [1], we show that we can reliably learn models of random walks and their anomalous exponents. The method can naturally be applied to trajectories of any length. We show its efficiency in analysing various anomalous random walks of biological relevance that were proposed in the AnDi challenge [2]. We explore how information is encoded in the GNN, and we show that it learns relevant physical features of the random walks. We furthermore evaluate its ability to generalize to types of trajectories not seen during training, and we show that the GNN retains high accuracy even with few parameters. We finally discuss the possibility to leverage these networks to analyse experimental data.
Cavity-enhanced superradiant Rayleigh scattering with ultra-cold and Bose-Einstein condensed atoms
Creators: name: Slama, Sebastian
name: Krenz, Gordon
name: Bux, Simone
name: Zimmermann, Claus
name: Courteille, Philippe W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report on the observation of collective atomic recoil lasing and superradiant Rayleigh scattering with ultracold and Bose-Einstein condensed atoms in an optical ring cavity. Both phenomena are based on instabilities evoked by the collective interaction of light with cold atomic gases. This publication clarifies the link between the two effects. The observation of superradiant behavior with thermal clouds as hot as several tens of $μ\textrm{K}$ proves that the phenomena are driven by the cooperative dynamics of the atoms, which is strongly enhanced by the presence of the ring cavity.
description: 10 pages, 10 figures
Weak gravitational lensing and shadow of a GUP-modified Schwarzschild black hole in the presence of plasma
Creators: name: Hoshimov, Husanboy
name: Yunusov, Odil
name: Atamurotov, Farruh
name: Jamil, Mubasher
name: Abdujabbarov, Ahmadjon
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work, we have studied weak gravitational lensing effect around black hole and determine shadow radius in GUP-corrected-Schwarzschild spacetime (S-GUP) in presence of plasma environment. We started with orbits of photons around black hole in S-GUP. In addition, we have studied shadow and gravitational weak lensing around such black hole. By using observational data of EHT project for the M87* and Sgr A*, we have got constrains parameter $ε$ in S-GUP gravity. Further to make a connection with observations, we investigate magnification and position of images formed as a result of lensing, and finally weak deflection angle and magnification for sources near M87* and Sgr A*.
description: 22 pages, 13 figures, 2 tables. To appear in Physics of the Dark Universe
Database-supported change analysis and quality evaluation of OpenStreetMap Data
Creators: name: Martini, A.
name: Kuper, Paul Vincent
name: Breunig, Martin
Publisher: name: Karlsruhe
Year: 2019
Subjects: OpenStreetMap
Volunteered Geographic Information
spatial database
temporal OSM data
data quality

description: A significant advantage of OpenStreetMap data is its up-to-dateness. However, for rural and city planning, it is also of importance to access historical data and to compare the changes between new and old versions of the same area. This paper first introduces into a differentiated classification of changes on OpenStreetMap data sets. Then a methodology for an automated database-supported analysis of changes is presented. Beyond the information already provided from the OpenStreetMap server, we present a more detailed analysis with derived information. Based on this approach it is possible to identify objects with attributive or geometric changes and to find out how they exactly differ from their previous versions. The analysis shows in which regions mappers were active during a certain time interval. Furthermore, a time based approach based on various parameters to determine the quality of the data is presented. It provides a guideline of data quality and works without any reference data. Therefore, an indication about the development of OpenStreetMap in terms of completeness and correctness of the data in different regions is given. Finally, a conclusion and an outlook on open research questions are presented.
Kraus operators and symmetric groups
Creators: name: Cattabriga, Alessia
name: Ercolessi, Elisa
name: Gozzi, Riccardo
name: Meucci, Erika
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In the contest of open quantum systems, we study a class of Kraus operators whose definition relies on the defining representation of the symmetric groups. We analyze the induced orbits as well as the limit set and the degenerate cases.
Design of a new harrow type wool transport mechanism to reduce fibre entanglement
Creators: name: Kayumov, Juramirza <1978>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: ING-IND/13 Meccanica applicata alle macchine

description: The wool is entangled at several stages of its processing. In the conventional scouring machines, the prongs or the rakes agitate the wool and lead the fiber entanglement. Several scouring systems have been commercialized in order to reduce the fiber entanglement. In spite of the existing technologies, the conventional scouring machines are widely used in wool processing.
In this thesis, a new approach for the harrow type wool transport mechanism has been introduced. The proposed mechanism has been designed based on the motion of the conventional harrow type wool transport mechanism by exploiting new synthesis concepts. The developed structure has been synthesized based on the Hrones and Nelson's "Atlas of four bar linkages". The four bar linkage has been applied for the desired trajectory of the developed wool transport mechanism. The prongs of the developed mechanism immerse the wool into the scouring liquor and gently propel forward toward the end of the machine with approximately straight line motion in a certain length instead of circular or elliptical motion typical of the conventional machines.
Dairy Feed Benchmarks
Creators: name: Martinez, Charles
name: Bilderback, David
name: Eckelkamp, Elizabeth
name: Pepper, Hal
name: Cross, Tim
name: Martinez, Charles
name: Bilderback, David
name: Eckelkamp, Elizabeth
name: Pepper, Hal
name: Cross, Tim
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Farm Management
subject: Productivity Analysis
subject: dairy
subject: farm management
subject: benchmarking

description: In any business, recordkeeping is an important practice for financial success. In agriculture, recordkeeping can help producers understand the production/input efficiency, breakeven values, cost structure and profitability drivers for their business. A major benefit can also be financial health analyses. University of Tennessee Extension has developed the Dairy Gauge benchmarking program to help dairy producers better understand what their financial statements and key ratios suggest about the financial health of their business. Within the program, there are three areas that were developed specifically for gauging a dairy business’ financial health. The three areas are 1) balance sheet and profitability dairy benchmarks, 2) dairy feed benchmarks, and 3) dairy non-feed income and expense benchmarks. This publication is focused on dairy feed benchmarks.
Exploration of floral motifs for modular textile and apparel design
Creators: name: Buami, Edem Kwami
name: Agbo, Christiana
name: Adjei, Daniel Akuoko
name: Gbadegbe, Richard
name: Godomey, Bernard Sprehe
name: Dzidzornu, Valeria Makafui
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: This study investigates the application of floral motifs in a modular design framework for textile and garment production. The modular design philosophy allows for the construction of adaptable and useful clothes by assembling small, standardised pieces. While earlier research on modular fashion has focused chiefly on geometric shapes, this project looks into using floral patterns to improve the aesthetic and customisation potential of modular garments. The study used practice-based research methodologies, including studio activities to implement the modular textile and garment designs. The findings reveal how the floral motif modules can be separated and recomposed to meet the end user’s preferences, resulting in increased design flexibility, adaptability, and cost savings. The study recommends that fashion designers embrace modular design concepts, leading to higher quality, innovation, and cost-effectiveness for consumers by allowing for greater customisation and reconfiguration. This work adds to the expanding body of knowledge on modular techniques in textile and garment design.
Simulation and Visualization of Gravitational Waves from Binary Black Holes
Creators: name: Scharpf, Philipp
Publisher: name: Zenodo
Year: 2017
Subjects: Gravitational Waves
Binary Black Holes
Quasinormal Modes
Simulation
Visualization
Machine Learning

description: This thesis covers the simulation and visualization of Gravitational Waves from Binary Black Hole systems. It aims to provide an overview of theoretical Gravitational Wave science, starting with a short insight into the experimental technologies and methods whose recent success motivated a multiplicity of theoretical work in the past years. The main objective of Gravitational Wave science is to develop accurate theoretical waveform templates that can be used in Gravitational Wave Data Analysis pipelines, being convoluted with the signal to minimize the detector noise and allowing for parameter estimation of the astrophysical systems that shall be detected. Approximation schemes of Newtonian and Post-Newtonian theory are introduced, followed by an elaborate treatment of the Numerical Relativity simulation theory while a comprehensive catalog from the publicly available SXS Gravitational Wave database is examined. The simulated waveform data is subsequently compared to predictions of Quasinormal Mode damped harmonic oscillations of the remnant Black Hole that are expected to be evoked by the Binary Black Hole collision. Finally, visualization techniques in the context of Gravitational Waves from Binary Black Holes and Quasinormal Modes are reviewed. Recently developed tendex-vortex tools to visualize the spacetime curvature tensors are presented, followed by visualizations of tensor spherical projections, the angular distributions of spin-weighted spherical and spheroidal harmonics that occur in the description of the Gravitational Wave ringdown and Quasinormal Modes. Results It will be shown that the parameterspace of Binary Black Hole coalescence Numerical Relativity simulations available today is not sufficiently covered, making analytical models indispensable for data analysis. A phenomenological model for the merger and ringdown part of the waveform is constructed, containing the constitutive quantities fitted over the whole parameterspace and all multipole modes of the examined waveforms from the available SXS simulations. The model is able to provide fast waveforms and can be used to tune the Effective One Body code that relies on ordinary differential equations (ODEs). The multimode distribution is qualitatively discussed and the frequencies and decay times are compared to the complex Quasinormal Mode (QNM) frequencies predicted by Black Hole perturbation theory. Finally, the angular distribution of the QNMs is visualized and shown to be independent of the initial data of the numerical simulation.
Universality in the synchronization of weighted random networks
Creators: name: Zhou, Changsong
name: Motter, Adilson E.
name: Kurths, Jurgen
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Realistic networks display not only a complex topological structure, but also a heterogeneous distribution of weights in the connection strengths. Here we study synchronization in weighted complex networks and show that the synchronizability of random networks with large minimum degree is determined by two leading parameters: the mean degree and the heterogeneity of the distribution of node's intensity, where the intensity of a node, defined as the total strength of input connections, is a natural combination of topology and weights. Our results provide a possibility for the control of synchronization in complex networks by the manipulation of few parameters.
description: 4 pages, 3 figures
Kilonova-Targeting Lightcurve Classification for Wide Field Survey Telescope
Creators: name: Liang, Runduo
name: Liu, Zhengyan
name: Lei, Lei
name: Zhao, Wen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: With the enhancement of sensitivity of Gravitational Wave (GW) detectors and capabilities of large survey facilities, such as Vera Rubin Observatory Legacy Survey of Space and Time (LSST) and 2.5-m Wide Field Survey Telescope (WFST), we now have the potential to detect an increasing number of distant kilonova (KN). However, distinguishing KN from the plethora of detected transients in ongoing and future follow-up surveys presents a significant challenge. In this study, our objective is to establish an efficient classification mechanism tailored for the follow-up survey conducted by WFST, with a specific focus on identifying KN associated with GW. We employ a novel temporal convolutional neural network architecture, trained using simulated multi-band photometry lasting for 3 days by WFST, accompanied by contextual information, i.e. luminosity distance information by GW. By comparison of the choices of contextual information, we can reach 95\% precision, and 94\% recall for our best model. It also performs good validation on photometry data on AT2017gfo and AT2019npv. Furthermore, we investigate the ability of the model to distinguish KN in a GW follow-up survey. We conclude that there is over 80\% probability that we can capture true KN in selected 20 candidates among $\sim 250$ detected astrophysical transients that have passed real-bogus filter and cross-matching.
description: 19 pages, 9 figures, 2 tables. Accepted for publication in Universe
SkinScan: Low-Cost 3D-Scanning for Dermatologic Diagnosis and Documentation
Creators: name: Nau, Merlin A.
name: Schiffers, Florian
name: Li, Yunhao
name: Xu, Bingjie
name: Maier, Andreas
name: Tumblin, Jack
name: Walton, Marc
name: Katsaggelos, Aggelos K.
name: Willomitzer, Florian
name: Cossairt, Oliver
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The utilization of computational photography becomes increasingly essential in the medical field. Today, imaging techniques for dermatology range from two-dimensional (2D) color imagery with a mobile device to professional clinical imaging systems measuring additional detailed three-dimensional (3D) data. The latter are commonly expensive and not accessible to a broad audience. In this work, we propose a novel system and software framework that relies only on low-cost (and even mobile) commodity devices present in every household to measure detailed 3D information of the human skin with a 3D-gradient-illumination-based method. We believe that our system has great potential for early-stage diagnosis and monitoring of skin diseases, especially in vastly populated or underdeveloped areas.
description: 5 pages, 4 Figures, Submitted at ICIP 2021
On the $D_n$ Spin Vertex Models for Odd $n$
Creators: name: Gepner, Doron
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Solvable vertex models in two dimensions are of importance in conformal field theory, phase transitions and integrable models. We consider here the $D_n$ spin vertex models, for $n$ which is odd. The models involve also the anti--spinor representation. We describe here the Boltzmann weights for these representations using crossing symmetry from the previously known spinor representations. For calculation reasons we limit ourself to the $n=3$ and $n=5$ cases, which are described explicitly.
description: 6 pages, no figures
The Effect of Muscle Fatigue on the Knee Proprioception: A Systematic Review
Creators: name: Azevedo, Joana
name: Moreira-Silva, Isabel
name: Seixas, Adérito
name: Fonseca, Pedro
name: Oliveira, José
name: Vilas-Boas, João Paulo
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences

description: This study aimed to systematically review and summarise the evidence about the effect of muscle fatigue on the knee proprioception of trained and non-trained individuals. A search in PubMed, Scopus, Web of Science and EBSCO databases and Google Scholar was conducted using the expression: “fatigue” AND (“proprioception” OR “position sense” OR “repositioning” OR “kinesthesia” OR “detection of passive motion” OR “force sense” OR “sense of resistance”) AND “knee”. Forty-two studies were included. Regarding joint-position sense, higher repositioning errors were reported after local and general protocols. Kinesthesia seems to be more affected when fatigue is induced locally, and force sense when assessed at higher target forces and after eccentric protocols. Muscle fatigue, both induced locally or generally, has a negative impact on the knee proprioception.
Evolving Continuous Optimisers from Scratch
Creators: name: Lones, Michael A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This work uses genetic programming to explore the space of continuous optimisers, with the goal of discovering novel ways of doing optimisation. In order to keep the search space broad, the optimisers are evolved from scratch using Push, a Turing-complete, general-purpose, language. The resulting optimisers are found to be diverse, and explore their optimisation landscapes using a variety of interesting, and sometimes unusual, strategies. Significantly, when applied to problems that were not seen during training, many of the evolved optimisers generalise well, and often outperform existing optimisers. This supports the idea that novel and effective forms of optimisation can be discovered in an automated manner. This paper also shows that pools of evolved optimisers can be hybridised to further increase their generality, leading to optimisers that perform robustly over a broad variety of problem types and sizes.
description: arXiv admin note: text overlap with arXiv:1910.00945
The origins of radio emission from [radio-"quiet"] AGN
Creators: name: Kimball, Amy E
Publisher: name: Zenodo
Year: 2018
Subjects: AGN
radio
astronomy

description: Abstract: One of the more puzzling aspects of active galactic nuclei is the dominant physical origin of their radio emission. For radio-loud objects, it's clear that the dominant origin is the AGN radio-jet. But for radio-quiet objects, recent literature results demonstrate an on-going controversy. Potential sources of radio emission include black hole spin, (scaled-down) AGN jets, shocks from AGN driven winds, and host galaxy star formation. In reality, all of these may contribute, but the question remains as to which one (if any) is the dominant source. I will review what is understand about radio-loud and radio quiet AGNs, discuss the ongoing controversy, and present possible next steps.
description: Slides from presentation at the May 2018 astronomy conference "The radio and X-ray connection in accreting objects" held in Monopoli, Italy.
Possible discovery of a nonlinear tail and second-order quasinormal modes in black hole ringdown
Creators: name: Okuzumi, Satoshi
name: Ioka, Kunihito
name: Sakagami, Masa-aki
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the nonlinear evolution of black hole ringdown in the framework of higher-order metric perturbation theory. By solving the initial-value problem of a simplified nonlinear field model analytically as well as numerically, we find that (i) second-order quasinormal modes (QNMs) are indeed excited at frequencies different from those of first-order QNMs, as predicted recently. We also find serendipitously that (ii) late-time evolution is dominated by a new type of power-law tail. This ``second-order power-law tail'' decays more slowly than any late-time tails known in the first-order (i.e., linear) perturbation theory, and is generated at the wavefront of the first-order perturbation by an essentially nonlinear mechanism. These nonlinear components should be particularly significant for binary black hole coalescences, and could open a new precision science in gravitational wave studies.
description: 13 pages, 6 figures, typos corrected, to appear in Phys. Rev. D