cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Micromegas operation in high pressure xenon: charge and scintillation readout
Creators: name: Balan, C.
name: Freitas, E. D. C.
name: Papaevangelou, T.
name: Giomataris, I.
name: da Luz, H. Natal
name: Monteiro, C. M. B.
name: Santos, J. M. F. dos
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The operational characteristics of a Micromegas operating in pure xenon at the pressure range of 1 to 10 bar are investigated. The maximum charge gain achieved in each pressure is approximately constant, around 4x10^2, for xenon pressures up to 5 bar and decreasing slowly above this pressure down to values somewhat above 10^2 at 10 bar. The MM presents the highest gains for xenon pressures above 4 bar, when compared to other micropattern gaseous multipliers. The lowest energy resolution obtained for X-rays of 22.1 keV exhibits a steady increase with pressure, from 12% at 1bar to about 32% at 10 bar. The effective scintillation yield, defined as the number of photons exiting through the MM mesh holes per primary electron produced in the conversion region was calculated. This yield is about 2x10^2 photons per primary electron at 1 bar, increasing to about 6x10^2 at 5 bar and, then, decreasing again to 2x10^2 at 10 bar. The readout of this scintillation by a suitable photosensor will result in higher gains but with increased statistical fluctuations.
description: 22 pages, 11 figures
Genus-one complex quantum Chern--Simons theory
Creators: name: Andersen, Jørgen Ellegaard
name: Malusà, Alessandro
name: Rembado, Gabriele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Algebra (math.QA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53D50, 81S10

description: We consider the geometric quantisation of Chern--Simons theory for closed genus-one surfaces and semisimple complex groups. First we introduce the natural complexified analogue of the Hitchin connection in Kähler quantisation, with polarisations coming from the nonabelian Hodge hyper-Kähler geometry of the moduli spaces of flat connections, thereby complementing the real-polarised approach of Witten. Then we consider the connection of Witten, and we identify it with the complexified Hitchin connection using a version of the Bargmann transform on polarised sections over the moduli spaces.
description: Version 3, 25 pages (plus references), comments welcome
title: Culture orale écrite et visuelle et pratiques de résistance dans les collectifs voyageurs
Publisher: name: Université Toulouse - Jean Jaurès
Year: 2023

description: Cette Journée d’étude organisée par le LISST-CAS, avec l'aide du Département Anthropologie de l'UT2J et du CRH de l'EHESS Paris, avait pour but de faire se rencontrer des chercheurs de différentes disciplines et des acteurs de la vie culturelle tsigane autour des questions de la transmission de la mémoire des persécutions et des discriminations mais aussi des résistances à celles-ci au sein des collectifs voyageurs.
Electronic and Structural Analysis of a Stable Hydrogenated BN sheet (BHNH): A First Principles Based Approach
Creators: name: Bhattacharya, A.
name: Bhattacharya, S.
name: Majumdar, C.
name: Das, G. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: From first-principles density functional calculations, we study the structural and electronic properties of a stable hydrogenated BN sheet, having formula unit BHNH. In the optimized BHNH structure, the H atoms stabilize on the B and N sites, alternating themselves on both sides of the BN-plane in specific periodic manner, giving rise to different BHNH conformers, viz. chair, boat and stirrup. The chair and boat conformers resemble in structure to those of graphane (CH). We propose a new conformer, called 'stirrup' conformer, that turns out to be the most stable, albeit marginally with respect to the boat conformer. All these BHNH conformers are insulator, with band gap varying between ~ 3.0 eV to 4.5 eV.
description: 13 pages, 3 figures
Renormalization constants for one-derivative fermion operators in twisted mass QCD
Creators: name: Alexandrou, C.
name: Constantinou, M.
name: Korzec, T.
name: Panagopoulos, H.
name: Stylianou, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present perturbative and non-perturbative results on the renormalization constants of the local and one-derivative vector and axial vector operators. Non-perturbative results are obtained using the twistedmassWilson fermion formulation employing two degenerate dynamical quarks and the tree-level Symanzik improved gluon action for pion masses in the range of about 450-260 MeV and at there values of the lattice spacing, namely 0.055 fm, 0.070 fm and 0.089 fm. Subtraction of O(a^2) terms is carried out by performing the perturbative evaluation of these operators at 1- loop and up to O(a^2). The renormalization conditions are defined in the RI'-MOM scheme, for both perturbative and non-perturbative results. The Z-factors, obtained for different values of the renormalization scale, are evolved perturbatively to a reference scale set by the inverse of the lattice spacing. In addition, they are translated to MS-bar at 2 GeV using 3-loop perturbative results for the conversion factors.
description: 7 pages, 4 figures, 1 table, talk given at the XXVIII International Symposium on Lattice Field Theory, Lattice2010, June 14-19, 2010, Villasimius, Italy
Morphismes de périodes et cohomologie syntomique
Creators: name: Gilles, Sally
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We give the geometric version of a construction of Colmez-Niziol which establishes a comparison theorem between arithmetic p-adic nearby cycles and syntomic sheaves. The local construction of the period isomorphism uses $(ϕ,Γ)$-modules theory and is obtained by reducing the period isomorphism to a comparison theorem between cohomologies of Lie algebras. By applying the method of "more general coordinates" used by Bhatt-Morrow-Scholze, we construct a global isomorphism. In particular, we deduce the semi-stable conjecture of Fontaine-Jannsen. This result was also proved by (among others) Tsuji, via the Fontaine-Messing map, and by Cesnavicius and Koshikawa, which generalized the proof of the crystalline conjecture by Bhatt, Morrow and Scholze. We use the previous map to show that the period morphism of Tsuji and the one of Cesnavicius-Koshikawa are the same.
description: Comments welcome!
Beyond LDA - How to integrate Topic Modeling into the Historian's Toolbox
Creators: name: Althage, Melanie
Publisher: name: Zenodo
Year: 2021
Subjects: Digital History
Digital Humanities
Topic Modeling

description: Posterbeitrag für den von der AG Digitale Geschichtswissenschaft vergebenen Peter Haber Preis für digitale Geschichte 2021 im Rahmen des 53. Deutschen Historikertages, München, 4. Oktober 2021, 12-14 Uhr. Das Poster zeigt am Beispiel von Topic Modeling exemplarisch die methodischen Fragestellungen und Ziele des Dissertationsprojekts "Mining the Historian’s Web – Methodenkritische Reflexion quantitativer Verfahren zur Analyse genuin digitaler Quellen am Beispiel der historischen Fachkommunikation" auf.
The Red Nova-like Variable in M31 - A Blue Candidate in Quiescence
Creators: name: Shara, Michael M.
name: Zurek, David
name: Prialnik, Dina
name: Yaron, Ofer
name: Kovetz, Attay
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: M31-RV was an extraordinarily luminous (~10^6 Lsun) eruptive variable, displaying very cool temperatures (roughly 1000 Kelvins) as it faded. The photometric behavior of M31-RV (and several other very red novae, i.e. luminous eruptive red variables) has led to several models of this apparently new class of astrophysical object. One of the most detailed models is that of "mergebursts": hypothetical mergers of close binary stars. These are predicted to rival or exceed the brightest classical novae in luminosity, but to be much cooler and redder than classical novae, and to become slowly hotter and bluer as they age. This prediction suggests two stringent and definitive tests of the mergeburst hypothesis. First, there should always be a cool red remnant, and NOT a hot blue remnant at the site of such an outburst. Second, the inflated envelope of a mergeburst event should be slowly contracting, hence it must display a slowly rising effective temperature. We have located a luminous, UV-bright object within 0.4 arcsec (1.5 sigma of the astrometric position) of M31-RV in archival WFPC2 images taken 10 years after the outburst: it resembles an old nova. Twenty years after the outburst, the object remains much too hot to be a mergeburst. Its behavior remains consistent with that of theoretical nova models which erupt on a low mass white dwarf. Future Hubble UV and visible images could determine if the M31-RV analogs (in M85 and in M99) are also behaving like old novae.
description: Accepted for publication in ApJ, comments welcome
Brownian bridge expansions for Lévy area approximations and particular values of the Riemann zeta function
Creators: name: Foster, James
name: Habermann, Karen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: Numerical Analysis (math.NA)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 60F05, 60H35, 60J65, 41A10, 42A10, 11M06

description: We study approximations for the Lévy area of Brownian motion which are based on the Fourier series expansion and a polynomial expansion of the associated Brownian bridge. Comparing the asymptotic convergence rates of the Lévy area approximations, we see that the approximation resulting from the polynomial expansion of the Brownian bridge is more accurate than the Kloeden-Platen-Wright approximation, whilst still only using independent normal random vectors. We then link the asymptotic convergence rates of these approximations to the limiting fluctuations for the corresponding series expansions of the Brownian bridge. Moreover, and of interest in its own right, the analysis we use to identify the fluctuation processes for the Karhunen-Loève and Fourier series expansions of the Brownian bridge is extended to give a stand-alone derivation of the values of the Riemann zeta function at even positive integers.
description: 28 pages, 4 figures, 2 tables, published version
Dynamic learning of synchronization in coupled nonlinear systems
Creators: name: Wu, Yong
name: Ding, Qianming
name: Huang, Weifang
name: Li, Tianyu
name: Yu, Dong
name: Jia, Ya
Publisher: name: arXiv
Year: 2024
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Synchronization phenomena are pervasive in coupled nonlinear systems across the natural world and engineering domains. Understanding how to dynamically identify the parameter space (or network structure) of coupled nonlinear systems in a synchronized state is crucial for the study of system synchronization. To address the challenge of achieving stable synchronization in coupled nonlinear systems, we develop a set of mathematical optimization techniques for dynamic learning of synchronization (DLS) inspired by machine learning. This technology captures the state differences between nodes within the system and dynamically adjusts weights, allowing coupled nonlinear systems to maintain a stable state of synchronization after appropriate weight adjustments. To enhance synchronization optimization, we use the Master Stability Function (MSF) to demonstrate how DLS effectively adjusts networks into their synchronization regions. We introduce several variants of the DLS technique, including adaptive, supervised, and hybrid methods, effectively promoting synchronization in heterogeneous networks such as small-world, scale-free, and random networks. The efficacy of this technique is validated through its application to simple FitzHugh-Nagumo neural networks and complex Hodgkin-Huxley neuronal networks, examining its impact on both global and local synchronization. The DLS technique proposed in this study offers a new solution to synchronization problems in dynamic network environments, addressing the deficiencies in adaptability and flexibility of existing technologies and providing a fresh perspective for understanding and implementing synchronization phenomena in coupled nonlinear systems.
description: 36 pages, 14 figures
a presentation about Alfred Adler( ارائه ای از نظریه آدلر )
Creators: name: Hanieh Solhjou
Publisher: name: Zenodo
Year: 2022
Subjects: Alfred Adler
آلفرد آدلر

description: یک ارائه کلاسی در ارتباط با نظریه روانشناسی فردی آلفرد آدلر
Additional file 2 of FTO-dependent m6A regulates muscle fiber remodeling in an NFATC1–YTHDF2 dependent manner
Creators: name: Wang, Wengang
name: Du, Xueming
name: Luo, Ming
name: Yang, Ningning
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biological Sciences not elsewhere classified

description: Additional file 2. Table S2: The target sequences of siRNAs for Fto and Ythdf2.
Multimodal rhetorical figures
Creators: name: Guilbeault, Douglas Richard
Publisher: name: University of British Columbia
Year: 2015

description: Rhetoricians have, for millennia, catalogued a set of persuasive techniques called rhetorical figures, but so far, they have examined them almost exclusively in the verbal modalities – i.e. in the written and spoken word. This paper shows how, in embodied contexts, figures also draw from bodily modalities to enhance their argumentative effects. Focusing on political speeches, I show how hand gestures are systematically incorporated into antithesis, a figure wherein contrastive phrases are framed in parallel form: the stronger lead, the weaker follow. Cognitive approaches to gesture provide my analysis with the tools to use gesture as a window into the embodied foundations of figures and their persuasiveness. I show how various features of gesture, including hand dominance, distance, and shape, allow speakers to channel the uptake of figures in terms of viewpoint and metaphor. With evidence that gestures are produced and perceived implicitly, my study suggests that persuasive aims are implemented by the subconscious mechanisms of multimodal cognition. I further show how multimodality participates in other figures, even in multimodal environments outside of gesture and speech, with each environment giving rise to a novel set of rhetorical affordances. These findings provide the initial steps toward a broader theory of multimodal rhetoric that examines how figures and other forms of persuasion originate from the body and evolve through the cultural and technological engineering of multimodal experience.
Second-order phase transition of Kehagias-Sfetsos black hole in deformed Hǒrava-Lifshitz gravity
Creators: name: Wang, Mengjie
name: Chen, Songbai
name: Jing, Jiliang
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the second-order phase transition (SOPT) for the spherically symmetric Kehagias-Sfetsos (KS) black hole in the deformed Hǒrava-Lifshitz gravity by applying the methods of equilibrium and non-equilibrium fluctuations. We find that, although the KS black hole has only one mass parameter as the usual Schwarzschild ones, the SOPT will take place if the mass of the KS black hole changes across the critical point $\frac{\sqrt{5+\sqrt{33}}(\sqrt{33}-1)} {16\sqrtω} $. The result show us that there is difference between the Hǒrava-Lifshitz gravity and the Einstein's gravity theory.
description: 9 pages, no figure, accepted for publication in PLB
Leistungsbewertung
Creators: name: Doepner, Thomas
name: Keip, Marina
name: Kurczyk, Stephanie
Publisher: name: Latein und Griechisch in Nordrhein-Westfalen
Year: 2021

description: Latein und Griechisch in Nordrhein-Westfalen, Bd. 2 Nr. 1 (2021): Leistungsbewertung
Self-reported penicillin allergy and dental implant therapy outcome, a clinical retrospective study
Creators: name: Noroozi, Mehdi
Publisher: name: University of British Columbia
Year: 2015

description: Objectives: The histologic, clinical, and radiographic findings together indicated infection as a major etiology of implant failure. Antibiotics have been prescribed following implant surgery to control infection. Inability to take penicillin seems to be a determining factor in implants failure in particular, with certain types of implant-related procedures. The aim of this study was to investigate retrospectively whether self-reported allergy to penicillin contributes to higher rate of implant failure. Methods: The survival of 5576 implants (985 Nobel Biocare and 4591 Straumann) placed surgically by an experienced periodontist was assessed in patients with the age range of 20-89 (mean: 60 years old) and with the follow-up period of up to 10 years. 4132 implants followed for at least one year. The survival was defined as the implant remaining in the jaw. Pearson χ2 test and Logistic regression were applied to examine the relation between pairs of variables. All tests were 2-tailed with a significance level of 0.05. Results: Out of 5106 implants placed for patients taking penicillin, 0.8% failed, while out of 470 implants placed for patients with self-reported allergy to penicillin, 2.1% failed with statistically significant difference (P= 0.002). Odds of failure for implants placed in patients allergic to penicillin were 3.2 times higher than those for non-allergic patients while controlling for the other variables. Kaplan Meier test revealed statistically significant difference between survivals of implants placed in penicillin-allergic group compared with non-allergic group. 54% of implant failures in non-allergic group have occurred during the first 6 months of implant insertion, while in penicillin allergic group this amount was 80% with statistically significant difference. Immediate implant placement in fresh extraction socket had 10-times higher rate of failure in patients with self-reported allergy to penicillin. Significant association between smoking and implant failure was found (p=0.005). Implants in the area of second molars have the highest failure rate with more frequency in maxilla relative to mandible. Conclusion: Inability to take penicillin may contribute to higher rate of implant failure and thus, penicillin allergy test could be implemented in clinical settings to increase the likelihood of prescribing penicillin relative to its alternates.
Maximizing Sudler products via Ostrowski expansions and cotangent sums
Creators: name: Aistleitner, Christoph
name: Borda, Bence
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: There is an extensive literature on the asymptotic order of Sudler's trigonometric product $P_N (α) = \prod_{n=1}^N |2 \sin (πn α)|$ for fixed or for "typical" values of $α$. In the present paper we establish a structural result, which for a given $α$ characterizes those $N$ for which $P_N(α)$ attains particularly large values. This characterization relies on the coefficients of $N$ in its Ostrowski expansion with respect to $α$, and allows us to obtain very precise estimates for $\max_{1 \le N \leq M} P_N(α)$ and for $\sum_{N=1}^M P_N(α)^c$ in terms of $M$, for any $c>0$. Furthermore, our arguments give a natural explanation of the fact that the value of the hyperbolic volume of the complement of the figure-eight knot appears generically in results on the asymptotic order of the Sudler product and of the Kashaev invariant.
description: 58 pages
Hadron Structure on the Lattice
Creators: name: Meyer, Harvey B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A few chosen nucleon properties are described from a lattice QCD perspective: the nucleon sigma term and the scalar strangeness in the nucleon; the vector form factors in the nucleon, including the vector strangeness contribution, as well as parity breaking effects like the anapole and electric dipole moment; and finally the axial and tensor charges of the nucleon. The status of the lattice calculations is presented and their potential impact on phenomenology is discussed.
description: 17 pages, 9 figures; proceedings of the Conclusive Symposium of the Collaborative Research Center 443 "Many-body structure of strongly interacting systems", Mainz, February 23-25, 2011
Efficient time stepping for numerical integration using reinforcement learning
Creators: name: Dellnitz, Michael
name: Hüllermeier, Eyke
name: Lücke, Marvin
name: Ober-Blöbaum, Sina
name: Offen, Christian
name: Peitz, Sebastian
name: Pfannschmidt, Karlson
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Many problems in science and engineering require an efficient numerical approximation of integrals or solutions to differential equations. For systems with rapidly changing dynamics, an equidistant discretization is often inadvisable as it either results in prohibitively large errors or computational effort. To this end, adaptive schemes, such as solvers based on Runge--Kutta pairs, have been developed which adapt the step size based on local error estimations at each step. While the classical schemes apply very generally and are highly efficient on regular systems, they can behave sub-optimal when an inefficient step rejection mechanism is triggered by structurally complex systems such as chaotic systems. To overcome these issues, we propose a method to tailor numerical schemes to the problem class at hand. This is achieved by combining simple, classical quadrature rules or ODE solvers with data-driven time-stepping controllers. Compared with learning solution operators to ODEs directly, it generalises better to unseen initial data as our approach employs classical numerical schemes as base methods. At the same time it can make use of identified structures of a problem class and, therefore, outperforms state-of-the-art adaptive schemes. Several examples demonstrate superior efficiency. Source code is available at https://github.com/lueckem/quadrature-ML.
Elemental abundances of low-mass stars in the young clusters 25 Ori and lambda Ori
Creators: name: Biazzo, K.
name: Randich, S.
name: Palla, F.
name: Briceno, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Aims. We aim to derive the chemical pattern of the young clusters 25 Orionis and lambda Orionis through homogeneous and accurate measurements of elemental abundances. Methods. We present FLAMES/UVES observations of a sample of 14 K-type targets in the 25 Ori and lambda Ori clusters; we measure their radial velocities, in order to confirm cluster membership. We derive stellar parameters and abundances of Fe, Na, Al, Si, Ca, Ti, and Ni using the code MOOG. Results. All the 25 Ori stars are confirmed cluster members without evidence of binarity; in lambda Ori we identify one non-member and one candidate single-lined binary star. We find an average metallicity [Fe/H]=-0.05+/-0.05 for 25 Ori, where the error is the 1sigma standard deviation from the average. lambda Ori members have a mean iron abundance value of 0.01+/-0.01. The other elements show close-to-solar ratios and no star-to-star dispersion. Conclusions. Our results, along with previous metallicity determinations in the Orion complex, evidence a small but detectable dispersion in the [Fe/H] distribution of the complex. This appears to be compatible with large-scale star formation episodes and initial non-uniformity in the pre-cloud medium. We show that, as expected, the abundance distribution of star forming regions is consistent with the chemical pattern of the Galactic thin disk.
description: Accepted by Astronomy and Astrophysics. 14 pages, 10 figures, 7 tables
Poisson maps between character varieties: gluing and capping
Creators: name: Biswas, Indranil
name: Hurtubise, Jacques
name: Jeffrey, Lisa C.
name: Lawton, Sean
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 14M35, 53D30 (Primary), 14L24 (Secondary)

description: Let G be a compact Lie group or a complex reductive affine algebraic group. We explore induced mappings between G-character varieties of surface groups by mappings between corresponding surfaces. It is shown that these mappings are generally Poisson. We also given an effective algorithm to compute the Poisson bi-vectors when G=SL(2,C). We demonstrate this algorithm by explicitly calculating the Poisson bi-vector for the 5-holed sphere, the first example for an Euler characteristic -3 surface.
description: 45 pages, 14 figures; accepted for publication in the Journal of Symplectic Geometry
Spectroscopy of a narrow-line laser cooling transition in atomic dysprosium
Creators: name: Lu, Mingwu
name: Youn, Seo Ho
name: Lev, Benjamin L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The laser cooling and trapping of ultracold neutral dysprosium has been recently demonstrated using the broad, open 421-nm cycling transition. Narrow-line magneto-optical trapping of Dy on longer wavelength transitions would enable the preparation of ultracold Dy samples suitable for loading optical dipole traps and subsequent evaporative cooling. We have identified the closed 741-nm cycling transition as a candidate for the narrow-line cooling of Dy. We present experimental data on the isotope shifts, the hyperfine constants A and B, and the decay rate of the 741-nm transition. In addition, we report a measurement of the 421-nm transition's linewidth, which agrees with previous measurements. We summarize the laser cooling characteristics of these transitions as well as other narrow cycling transitions that may prove useful for cooling Dy.
description: 6+ pages, 5 figures, 5 tables
Homological mirror symmetry at large volume
Creators: name: Gammage, Benjamin
name: Shende, Vivek
Publisher: name: arXiv
Year: 2021
Subjects: subject: Symplectic Geometry (math.SG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: A typical large complex-structure limit for mirror symmetry consists of toric varieties glued to each other along their toric boundaries. Here we construct the mirror large volume limit space as a Weinstein symplectic manifold. We prove homological mirror symmetry: the category of coherent sheaves on the first space is equivalent to the Fukaya category of the second. Our equivalence intertwines the Viterbo restriction maps for a generalized pair-of-pants cover of the symplectic manifold with the restriction of coherent sheaves for a certain affine cover of the algebraic variety. We deduce a posteriori a local-to-global principle conjectured by Seidel -- certain diagrams of Viterbo restrictions are cartesian -- by passing Zariski descent through our mirror symmetry result.
description: v2: Minor edits. Final version, to appear in Tunis. J. Math
Additional file 4 of FTO-dependent m6A regulates muscle fiber remodeling in an NFATC1–YTHDF2 dependent manner
Creators: name: Wang, Wengang
name: Du, Xueming
name: Luo, Ming
name: Yang, Ningning
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biological Sciences not elsewhere classified

description: Additional file 4. Table S4: The real time quantitative PCR primers for mouse.
Rez. H. Meller, M Schefzik, Die Welt der Himmelsscheibe von Nebra - neue Horizonte, Halle 2020.
Creators: name: Schulz-Koppe, Heinz-Jürgen
Publisher: name: Latein und Griechisch in Nordrhein-Westfalen
Year: 2021

description: Latein und Griechisch in Nordrhein-Westfalen, Bd. 2 Nr. 1 (2021): Leistungsbewertung
Truncation data analysis for the under-reporting probability in COVID-19 pandemic
Creators: name: Liang, Wei
name: Dai, Hongsheng
name: Restaino, Marialuisa
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: The COVID-19 pandemic has affected all countries in the world and brings a major disruption in our daily lives. Estimation of the prevalence and contagiousness of COVID-19 infections may be challenging due to under-reporting of infected cases. For a better understanding of such pandemic in its early stages, it is crucial to take into consideration unreported infections. In this study we propose a truncation model to estimate the under-reporting probabilities for infected cases. Hypothesis testing on the differences in truncation probabilities, that are related to the under-reporting rates, is implemented. Large sample results of the hypothesis test are presented theoretically and by means of simulation studies. We also apply the methodology to COVID-19 data in certain countries, where under-reporting probabilities are expected to be high.
Most Expected Winner: An Interpretation of Winners over Uncertain Voter Preferences
Creators: name: Ping, Haoyue
name: Stoyanovich, Julia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: It remains an open question how to determine the winner of an election when voter preferences are incomplete or uncertain. One option is to assume some probability space over the voting profile and select the Most Probable Winner (MPW) -- the candidate or candidates with the best chance of winning. In this paper, we propose an alternative winner interpretation, selecting the Most Expected Winner (MEW) according to the expected performance of the candidates. We separate the uncertainty in voter preferences into the generation step and the observation step, which gives rise to a unified voting profile combining both incomplete and probabilistic voting profiles. We use this framework to establish the theoretical hardness of \mew over incomplete voter preferences, and then identify a collection of tractable cases for a variety of voting profiles, including those based on the popular Repeated Insertion Model (RIM) and its special case, the Mallows model. We develop solvers customized for various voter preference types to quantify the candidate performance for the individual voters, and propose a pruning strategy that optimizes computation. The performance of the proposed solvers and pruning strategy is evaluated extensively on real and synthetic benchmarks, showing that our methods are practical.
description: This is the technical report of the following paper: Haoyue Ping and Julia Stoyanovich. 2023. Most Expected Winner: An Interpretation of Winners over Uncertain Voter Preferences. Proc. ACM Manag. Data, 1, N1, Article 22 (May 2023), 33 pages. https://doi.org/10.1145/3588702
Rez. G. P. Weishaupt, Aquisgranum. Descriptio urbis Caroli Magni. Der erste Stadtführer über Aachen auf Latein, Berlin 2020
Creators: name: Nießen, Johannes Maximilian
Publisher: name: Latein und Griechisch in Nordrhein-Westfalen
Year: 2021

description: Latein und Griechisch in Nordrhein-Westfalen, Bd. 2 Nr. 1 (2021): Leistungsbewertung
Phenomenology of LFV at low-energies and at the LHC: strategies to probe the SUSY seesaw
Creators: name: Teixeira, A. M.
name: Abada, A.
name: Figueiredo, A. J. R.
name: Romao, J. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the impact of a type-I SUSY seesaw concerning lepton flavour violation (LFV) at low-energies and at the LHC. At the LHC, $ χ_2^0\to \tilde \ell \,\ell \to \ell \,\ell\,χ_1^0$ decays, in combination with other observables, render feasible the reconstruction of the masses of the intermediate sleptons, and hence the study of $\ell_i - \ell_j$ mass differences. If interpreted as being due to the violation of lepton flavour, high-energy observables, such as large slepton mass splittings and flavour violating neutralino and slepton decays, are expected to be accompanied by low-energy manifestations of LFV such as radiative and three-body lepton decays. We discuss how to devise strategies based in the interplay of slepton mass splittings as might be observed at the LHC and low-energy LFV observables to derive important information on the underlying mechanism of LFV.
description: 6 pages, 4 figures. To appear in the proceedings of the 11th International Workshop on Tau Lepton Physics (TAU2010), Manchester, UK, 13-17 September 2010
Efficient use of simultaneous multi-band observations for variable star analysis
Creators: name: Süveges, Maria
name: Bartholdi, Paul
name: Becker, Andrew
name: Ivezic, Zeljko
name: Beck, Mathias
name: Eyer, Laurent
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The luminosity changes of most types of variable stars are correlated in the different wavelengths, and these correlations may be exploited for several purposes: for variability detection, for distinction of microvariability from noise, for period search or for classification. Principal component analysis is a simple and well-developed statistical tool to analyze correlated data. We will discuss its use on variable objects of Stripe 82 of the Sloan Digital Sky Survey, with the aim of identifying new RR Lyrae and SX Phoenicis-type candidates. The application is not straightforward because of different noise levels in the different bands, the presence of outliers that can be confused with real extreme observations, under- or overestimated errors and the dependence of errors on the magnitudes. These particularities require robust methods to be applied together with the principal component analysis. The results show that PCA is a valuable aid in variability analysis with multi-band data.
description: 8 pages, 5 figures, Workshop on Astrostatistics and Data Mining in Astronomical Databases, May 29-June 4 2011, La Palma
Rez. E. Martens (Hg.), Platon. Theätet, Gr./Dt., Stuttgart 2020
Creators: name: Hümbs, André
Publisher: name: Latein und Griechisch in Nordrhein-Westfalen
Year: 2021

description: Latein und Griechisch in Nordrhein-Westfalen, Bd. 2 Nr. 1 (2021): Leistungsbewertung
High precision spectra at large redshift for dynamical DE cosmologies
Creators: name: Bonometto, S. A.
name: Casarini, L.
name: Maccio', A. V.
name: Stinson, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The next generation mass probes will investigate DE nature by measuring non-linear power spectra at various z, and comparing them with high precision simulations. Producing a complete set of them, taking into account baryon physics and for any DE state equation w(z), would really be numerically expensive. Regularities reducing such duty are essential. This paper presents further n-body tests of a relation we found, linking models with DE state parameter w(z) to const.-w models, and also tests the relation in hydro simulations.
description: PASCOS 2010, the 16th International Symposium on Particles, Strings and Cosmology, Valencia (Spain), July 19th - 23rd, 2010
Star DGT: a Robust Gabor Transform for Speech Denoising
Creators: name: Kouni, Vasiliki
name: Rauhut, Holger
name: Theoharis, Theoharis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Information Theory (cs.IT)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we address the speech denoising problem, where Gaussian, pink and blue additive noises are to be removed from a given speech signal. Our approach is based on a redundant, analysis-sparse representation of the original speech signal. We pick an eigenvector of the Zauner unitary matrix and -- under certain assumptions on the ambient dimension -- we use it as window vector to generate a spark deficient Gabor frame. The analysis operator associated with such a frame, is a (highly) redundant Gabor transform, which we use as a sparsifying transform in denoising procedure. We conduct computational experiments on real-world speech data, using as baseline three Gabor transforms generated by state-of-the-art window vectors in time-frequency analysis and compare their performance to the proposed Gabor transform. The results show that our proposed redundant Gabor transform outperforms all others, consistently for all signals.
description: arXiv admin note: text overlap with arXiv:2103.11233
Tuning electronic structure of graphene via tailoring structure: theoretical study
Creators: name: He, H. Y.
name: Zhang, Y.
name: Pan, B. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electronic structures of graphene sheet with different defective patterns are investigated, based on the first principles calculations. We find that defective patterns can tune the electronic structures of the graphene significantly. Triangle patterns give rise to strongly localized states near the Fermi level, and hexagonal patterns open up band gaps in the systems. In addition, rectangular patterns, which feature networks of graphene nanoribbons with either zigzag or armchair edges, exhibit semiconducting behaviors, where the band gap has an evident dependence on the width of the nanoribbons. For the networks of the graphene nanoribbons, some special channels for electronic transport are predicted.
description: 5 figures, 6 pages
Early adolescents' evaluations of MindUP : a universal mindfulness-based social and emotional learning program
Creators: name: Maloney, Jacqueline Elizabeth
Publisher: name: University of British Columbia
Year: 2015

description: This exploratory study examined the evaluations of a mindfulness-based social and emotional learning program, MindUP, reported by 189 fourth to seventh grade students from eight classrooms across seven public elementary schools in a large urban school district in Western Canada. Qualitative and quantitative data from a written post-program participant satisfaction survey were examined in order to investigate the following questions: (1) What were students’ evaluations of the program? Specifically, what aspects did they like and/or dislike, and why would they recommend the program to a friend or not? (2) What skills and concepts did students report learning in the MindUP program? and (3) How did students extend what they learned beyond the program? Gender and grade differences among responses were also investigated. The vast majority of students reported that they enjoyed taking part in the MindUP program (88%), that they learned something new (96%), and that the things they learned were valuable for them in school and home life (95%). Most students would recommend the MindUP program to a friend (69%). Mindfulness activities were cited most often as the part of the program students enjoyed most, especially mindful sensing activities, such as mindful eating. Gaining skills for well-being and self-regulation were also frequently mentioned in response to open-ended questions. Although girls tended to provide higher ratings to survey questions in support of MindUP than boys, in most cases the differences were not statistically significant and effect sizes were small. Significant Grade by Gender interactions were observed in two items: Grade 4 and 5 girls reported learning more than grade 4 and 5 boys, and grade 6 and 7 girls were more likely to recommend the program to a friend than grade 6 and 7 boys. No other significant differences in grade were observed. In sum, most students were in favour of including mindfulness-based SEL in schools. The participant satisfactory survey that contain closed-ended and open-ended question was shown to provide reliable and valuable insights from students. Including similar surveys in future studies may be a time- and cost- efficient method of ensuring students’ voices are heard in program evaluations.
Bilinear Wavelet Representation of Calderón-Zygmund Forms
Creators: name: Di Plinio, Francesco
name: Green, A. Walton
name: Wick, Brett D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B20

description: We represent a bilinear Calderón-Zygmund operator at a given smoothness level as a finite sum of cancellative, complexity zero operators, involving smooth wavelet forms, and continuous paraproduct forms. This representation results in a sparse $T(1)$-type bound, which in turn yields directly new sharp weighted bilinear estimates on Lebesgue and Sobolev spaces. Moreover, we apply the representation theorem to study fractional differentiation of bilinear operators, establishing Leibniz-type rules in weighted Sobolev spaces which are new even in the simplest case of the pointwise product.
description: 38 pages, to appear in Pure and Applied Analysis
Rez. H. Flashar, Platon - Philosophieren im Dialog, Wien 2021
Creators: name: Aretz, Susanne
Publisher: name: Latein und Griechisch in Nordrhein-Westfalen
Year: 2021

description: Latein und Griechisch in Nordrhein-Westfalen, Bd. 2 Nr. 1 (2021): Leistungsbewertung
Induced osmotic vorticity in the quantum hydrodynamical picture
Creators: name: Dedes, C
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A nonlinear wave mechanical equation is proposed by inserting an imaginary quantum potential into the Schrödinger equation. An explicit expression for its solution is given under certain assumptions and it is shown that it entails attenuation related effects as non-unitary evolution, non-exponential quantum decay and entropy production. In the quantum hydrodynamical formulation the existence of circulation effects for the osmotic velocity field is established. Finally, a time-invariant equation for the probability density is derived, analogous to the tensor Lighthill equation in aeroacoustics, which admits both retarded and advanced solutions.
description: appendix on two-particle case
Seeing-Induced Errors in Solar Doppler Velocity Measurements
Creators: name: Padinhatteeri, Sreejith
name: Sridharan, R.
name: Sankarasubramanian, K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Imaging systems based on a narrow-band tunable filter are used to obtain Doppler velocity maps of solar features. These velocity maps are created by taking the difference between the blue- and red-wing intensity images of a chosen spectral line. This method has the inherent assumption that these two images are obtained under identical conditions. With the dynamical nature of the solar features as well as the Earth's atmosphere, systematic errors can be introduced in such measurements. In this paper, a quantitative estimate of the errors introduced due to variable seeing conditions for ground-based observations is simulated and compared with real observational data for identifying their reliability. It is shown, under such conditions, that there is a strong cross-talk from the total intensity to the velocity estimates. These spurious velocities are larger in magnitude for the umbral regions compared to the penumbra or quiet-sun regions surrounding the sunspots. The variable seeing can induce spurious velocities up to about 1 km/s It is also shown that adaptive optics, in general, helps in minimising this effect.
description: 14 pages
Wöchentliche Vokabeltests - Pro und Contra
Creators: name: Doepner, Thomas
name: Kurczyk, Stephanie
Publisher: name: Latein und Griechisch in Nordrhein-Westfalen
Year: 2021

description: Latein und Griechisch in Nordrhein-Westfalen, Bd. 2 Nr. 1 (2021): Leistungsbewertung
Functional characterization of sex hormone-binding globulin genetic polymorphism
Creators: name: Wu, Tsung-Sheng
Publisher: name: University of British Columbia
Year: 2015

description: Human plasma SHBG is produced by the liver, and it transports biologically active sex steroids and determines their availability to target tissues. The 4.3 kb human SHBG transcriptional unit encoding a signal polypeptide for secretion followed by two laminin G (LG)-like domains is utilized by hepatocytes. The N-terminal LG domain of SHBG contains a region responsible for homodimer formation, and a steroid ligand-binding site that accommodates androgens and estrogens in opposite orientations. Among over 250 genetic polymorphisms identified in human SHBG, few are functionally characterized. In this research, I have performed a comprehensive analysis of functionally relevant SHBG single nucleotide polymorphisms (SNPs). Nine out of nineteen non-synonymous SNPs within the coding region of SHBG N-terminal LG domain were shown to encode SHBG mutants with abnormal properties in steroid ligand binding, calcium coordination, fibulin-2 interaction, glycosylation or secretion. In particular, SHBG R123H (encoded by rs143269613) has a general reduction in affinity for steroid ligands, whereas SHBG E176K (encoded by rs372114420) has a higher affinity specifically for estradiol. Crystallography revealed that instead of losing the structural integrity of the steroid-binding site, reduced flexibility of the loop region that covers the steroid-binding site, and conformational changes at the opening rim of a putative estradiol entrance, likely account for the abnormal steroid-binding affinities of SHBG R123H and SHBG E176K, respectively. Among eight SNPs within SHBG regulatory sequences selected for analysis, only rs138097069 increases SHBG promoter activity. In silico prediction revealed that rs138097069 is located within a putative FXR binding site, while rs6257, which is linked to low plasma SHBG concentrations, is located within a putative FOXA2 binding element. In HepG2 cells, GW4064-activated FXR and overexpressed FOXA2 both suppress SHBG expression by direct binding to their corresponding binding elements in an HNF4⍺-independent manner. By contrast, knock-down of FXR reduces, while knock-down of FOXA2 induces, HNF4⍺ expression and SHBG production. Characterization of functional SHBG SNPs has provided molecular explanations of how genetic differences contribute to SHBG production and function, and has identified possible roles for two novel regulators, FXR and FOXA2, in a more complex regulatory network that determines SHBG expression.