cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
State estimation with model reduction and shape variability: Application to biomedical problems
Creators: name: Galarce Marín, Felipe
name: Lombardi, Damiano
name: Mula, Olga
Publisher: name: Weierstrass Institute
Year: 2021
Subjects: subject: inverse problems
subject: shape variability
subject: non-parametric domains
subject: model reduction
subject: multi-dimensional scaling
subject: variational data assimilation
subject: 65D99
subject: 76Z05
subject: 35R30

description: We develop a mathematical and numerical framework to solve state estimation problems for applications that present variations in the shape of the spatial domain. This situation arises typically in a biomedical context where inverse problems are posed on certain organs or portions of the body which inevitably involve morphological variations. If one wants to provide fast reconstruction methods, the algorithms must take into account the geometric variability. We develop and analyze a method which allows to take this variability into account without needing any a priori knowledge on a parametrization of the geometrical variations. For this, we rely on morphometric techniques involving Multidimensional Scaling, and couple them with reconstruction algorithms that make use of reduced model spaces pre-computed on a database of geometries. We prove the potential of the method on a synthetic test problem inspired from the reconstruction of blood flows and quantities of medical interest with Doppler ultrasound imaging.
Fast error-controlling MOID computation for confocal elliptic orbits
Creators: name: Baluev, Roman V.
name: Mikryukov, Denis V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present an algorithm to compute the minimum orbital intersection distance (MOID), or global minimum of the distance between the points lying on two Keplerian ellipses. This is achieved by finding all stationary points of the distance function, based on solving an algebraic polynomial equation of $16$th degree. The algorithm tracks numerical errors appearing on the way, and treats carefully nearly degenerate cases, including practical cases with almost circular and almost coplanar orbits. Benchmarks confirm its high numeric reliability and accuracy, and that regardless of its error--controlling overheads, this algorithm pretends to be one of the fastest MOID computation methods available to date, so it may be useful in processing large catalogs.
description: 19 pages, 4 figures, 1 table; revised version submitted to Astronomy & Computing; the computing code is available for download at http://sourceforge.net/projects/distlink/
Analytic Solution for the Ground State Energy of the Extensive Many-Body Problem
Creators: name: Hollenberg, Lloyd C. L.
name: Witte, N. S.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: A closed form expression for the ground state energy density of the general extensive many-body problem is given in terms of the Lanczos tri-diagonal form of the Hamiltonian. Given the general expressions of the diagonal and off-diagonal elements of the Hamiltonian Lanczos matrix, $α_n(N)$ and $β_n(N)$, asymptotic forms $α(z)$ and $β(z)$ can be defined in terms of a new parameter $z\equiv n/N$ ($n$ is the Lanczos iteration and $N$ is the size of the system). By application of theorems on the zeros of orthogonal polynomials we find the ground-state energy density in the bulk limit to be given in general by ${\cal E}_0 = {\rm inf}\,\left[α(z) - 2\,β(z)\right]$.
description: 10 pages REVTex3.0, 3 PS figures
Holographic Signatures of Critical Collapse
Creators: name: Chesler, Paul M.
name: Way, Benson
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Critical phenomena in gravitational collapse exhibit the universal features of self-similarity, critical scaling, and the appearance of a naked singularity. We study critical collapse in AdS, focusing on holographic field theory observables. We demonstrate that the echoing period, critical exponent, and signatures of the naked singularity can all be extracted from the holographic stress tensor.
description: 5 pages, 7 figures, published version
Uromyces oblectaneus H. S. Jackson & Holw.
Creators: name: Junior, Alcindo Da Silva Martins
name: Gomes, Paulo Weslem Portal
name: Sakuragui, Cássia Mônica
name: Junior, Aníbal Alves De Carvalho
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Pucciniomycetes
Pucciniales
Pucciniaceae
Uromyces
Uromyces oblectaneus

description: Uromyces oblectaneus H.S. Jackson & Holw., in Jackson, Mycologia 18: 146. 1926.
 Type on Rhynchospora exaltata Kunth, Silvestre, Rio de Janeiro State, Brazil, 16.IX.1921, Holway 1113. (?/? ̿ IIpe/III).
 SPECIMENS EXAMINED— BRAZIL, SÃO PAULO, Mogi Mirim, Forest Estaç ã o Experimental / Horto Florestal de Mogi Mirim, on Cyperaceae – Rhynchospora sp., 04.V.2016, II,III, A. Martins Junior & A.A. Carvalho Junior 109/16 (RB 757270); on Cyperaceae - Rhynchospora exaltata Kunth, 21.VI.2017, 270/17 (RB 757335); Luiz Antônio, Estaç ã o Experimental de Luiz Antônio, 22. VI.2017, 299/17 (RB 757346).
 DESCRIPTION AND ILLUSTRATION: Hennen et al. (2005) and Salazar-Yepes & Carvalho Jr (2010).
description: Published as part of Junior, Alcindo Da Silva Martins, Gomes, Paulo Weslem Portal, Sakuragui, Cássia Mônica & Junior, Aníbal Alves De Carvalho, 2022, Contributions to the knowledge and distribution of Pucciniales (rust fungi) in three Brazilian biomes, pp. 79-117 in Phytotaxa 577 (1) on page 112, DOI: 10.11646/phytotaxa.577.1.4, http://zenodo.org/record/7517579
Additional file 1: of A hybrid expert approach for retrospective assessment of occupational exposures in a population-based case-control study of cancer
Creators: name: Jean-François Sauvé
name: Lavoué, Jérôme
name: Nadon, Louise
name: Ramzan Lakhani
name: Rhazi, Mounia Senhaji
name: Bourbonnais, Robert
name: Richard, Hugues
name: Marie-Élise Parent
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Inorganic Chemistry
subject: Science Policy

description: Table S1. Example of job-exposure profile for combination welders (CCDO 8335–126). Table S2. List of the 90 blue-collar occupations included in the analysis. Table S3. Proportion of jobs exposed by agent in PROtEuS (n = 313), overall and stratified by blue/white-collar status, and proportion of PROtEuS and Lung cancer study jobs exposed among the blue-collar occupations (n = 90) and agents (n = 203) retained in the comparison. Table S4. Cumulative odds ratios and 95% confidence intervals for the association between the categorical confidence, concentration or frequency of exposed jobs and source of exposure data. Table S5. Agreement in exposure status among cells between Lung and PROtEuS exposure data. (DOCX 144 kb)
title: Candidature projet ARMIPHO 2018
Creators: name: IRAA (USR 3155)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2019

description: Projet ArMiPho Architecture militaire de Phocide, une culture partagée entre Orient et Occident, porté par Stéphanie Zugmeyer (IRAA), Nicolas Faucherre (LA3M), Ollivier David (LA3M), François Quantin (IRAA) et Alain Badie (IRAA), en 2018
FAIMS3 Alpha User Acceptance Testing Report
Creators: name: Ballsun-Stanton, Brian
name: Lorente, Nuria
name: Reid, Nathan
name: Ross, Shawn Adrian
name: Crook, Penny
Publisher: name: Zenodo
Year: 2021

description: On 15 June 2021 user acceptance testing (UAT) was conducted on our Alpha Release (https://github.com/FAIMS/FAIMS3/releases/tag/v0.1.0-alpha). A number of tests for the creation, retrieval, update and deletion (CRUD) of data, on on multiple operating systems in online and offline environments, were successfully executed. This report is intended as a short summary and evaluation of the UAT. For more details on FAIMS3 see https://osf.io/mqk45/.
Naive dimensional analysis and truly strong interactions
Creators: name: Holdom, B.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We question whether the canonical estimate of a strong coupling, α\approx 4π, is always appropriate for dynamical symmetry breaking. Our discussion is motivated by the success of naive quark models in describing low energy QCD.
description: 8 pages, LaTeX, 1 figure, improved version to appear in PRD
Poor man's topological quantum gate based on the Su-Schrieffer-Heeger model
Creators: name: Boross, Péter
name: Asbóth, János K.
name: Széchenyi, Gábor
name: Oroszlány, László
name: Pályi, András
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological properties of quantum systems could provide protection of information against environmental noise, and thereby drastically advance their potential in quantum information processing. Most proposals for topologically protected quantum gates are based on many-body systems, e.g., fractional quantum Hall states, exotic superconductors, or ensembles of interacting spins, bearing an inherent conceptual complexity. Here, we propose and study a topologically protected quantum gate, based on a one-dimensional single-particle tight-binding model, known as the Su-Schrieffer-Heeger chain. The proposed $Y$ gate acts in the two-dimensional zero-energy subspace of a Y junction assembled from three chains, and is based on the spatial exchange of the defects supporting the zero-energy modes. With numerical simulations, we demonstrate that the gate is robust against hopping disorder but is corrupted by disorder in the on-site energy. Then we show that this robustness is topological protection, and that it arises as a joint consequence of chiral symmetry, time-reversal symmetry and the spatial separation of the zero-energy modes bound to the defects. This setup will most likely not lead to a practical quantum computer, nevertheless it does provide valuable insight to aspects of topological quantum computing as an elementary minimal model. Since this model is non-interacting and non-superconducting, its dynamics can be studied experimentally, e.g., using coupled optical waveguides.
description: 11 pages, 9 figures
Real-Axis Solution of Eliashberg Equations in Various Order-Parameter Symmetries and Tunneling Conductance of Optimally-Doped HTSC
Creators: name: Ummarino, Giovanni A.
name: Gonnelli, Renato S.
name: Daghero, Dario
Publisher: name: arXiv
Year: 2000
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In the present work we calculate the theoretical tunneling conductance curves of SIN junctions involving high-Tc superconductors, for different possible symmetries of the order parameter (s, d, s+id, s+d, anisotropic s and extended s). To do so, we solve the real-axis Eliashberg equations in the case of an half-filled infinite band. We show that some of the peculiar characteristics of HTSC tunneling curves (dip and hump at eV > Delta, broadening of the gap peak, zero bias and so on) can be explained in the framework of the Migdal-Eliashberg theory. The theoretical dI/dV curves calculated for the different symmetries at T=4 K are then compared to various experimental tunneling data obtained in optimally-doped BSCCO, TBCO, HBCO, LSCO and YBCO single crystals. To best fit the experimental data, the scattering by non-magnetic impurities has to be taken into account, thus limiting the sensitivity of this procedure in determining the exact gap symmetry of these materials. Finally, the effect of the temperature on the theoretical tunneling conductance is also discussed and the curves obtained at T=2 K are compared to those given by the analytical continuation of the imaginary-axis solution.
description: 6 pages, 3 figures, Proceedings of SATT10 Conference, to be published in Int. J. Mod. Phys. B
VesicaPiscis-BasedQuantumFieldTheory  (VP-QFT)
Creators: name: Hilmir Frímann Halldórsson
name: ChatGPT AI
name: Roary cat
Publisher: name: Zenodo
Year: 2025

description: Thisdocumentconsolidatesall researchconductedonVesicaPiscis BasedQuantumFieldTheory(VP-QFT), coveringitsimplicationsacross blackholephysics,cosmology,quantummechanics,andhigh-energyphysics. Thesectionsincludequantumcoherenceeffects,holography,darkmatter interactions,quantumgravitycorrections,andobservationalexperimental strategies.
Reducible contributions to quantum electrodynamics in external fields
Creators: name: Ahmadiniaz, Naser
name: Edwards, James P.
name: Ilderton, Anton
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider one-particle reducible (1PR) contributions to QED and scalar QED processes in external fields, at one-loop and two-loop order. We investigate three cases in detail: constant crossed fields, constant magnetic fields, and plane waves. We find that 1PR tadpole contributions in plane waves and constant crossed fields are non-zero, but contribute only divergences to be renormalised away. In constant magnetic fields, on the other hand, tadpole contributions give physical corrections to processes at one-loop and beyond. Our calculations are exact in the external fields and we give strong and weak field expansions in the magnetic case.
description: 36 pages, 9 figures, update to journal version
Neutrino oscillations in space within a solvable model
Creators: name: Ioannisian, Ara
name: Pilaftsis, Apostolos
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study neutrino oscillations in space within a realistic model in which both the source and the target are considered to be stationary having Gaussian-form localizations. The model admits an exact analytic solution in field theory which may be expressed in terms of complementary error functions, thereby allowing for a quantitative discussion of quantum-mechanical (coherent) versus statistical (incoherent) uncertainties. The solvable model provides an insightful framework in addressing questions related to propagation and oscillation of neutrinos that may not be attainable by the existing approaches. We find a novel form of plane-wave behaviour of neutrino oscillations if the localization spread of the source and target states due to quantum mechanics is of macroscopic size but much smaller than neutrinos' oscillation length. Finally, we discuss the limits on the coherence length of neutrino oscillations and find that they mainly arise from uncertainties of statistical origin.
description: 17 pages, ReVTeX, clarifications added
Exact S-Matrices with Affine Quantum Group Symmetry
Creators: name: Delius, Gustav W.
name: College, King's
name: London
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We show how to construct the exact factorized S-matrices of 1+1 dimensional quantum field theories whose symmetry charges generate a quantum affine algebra. Quantum affine Toda theories are examples of such theories. We take into account that the Lorentz spins of the symmetry charges determine the gradation of the quantum affine algebras. This gives the S-matrices a non-rigid pole structure. It depends on a kind of ``quantum'' dual Coxeter number which will therefore also determine the quantum mass ratios in these theories. As an example we explicitly construct S-matrices with $U_q(c_n^{(1)})$ symmetry.
description: Latex file, 21 pages
Additional file 2 of Parameter estimation in models of biological oscillators: an automated regularised estimation approach
Creators: name: Pitt, Jake Alan
name: Banga, Julio R.
Publisher: name: figshare
Year: 2019
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Plant Biology
subject: Computational Biology

description: Critical comparison of optimisation solvers. In GEARS, the optimisation problems are solved using the hybrid metaheuristic eSS. A comparison of the eSS global optimisation solver used in GEARS with other competitive local and global optimisation solvers. (PDF 880 kb)
Dark matter as scalaron in $f(R)$ gravity models
Creators: name: Yadav, Bal Krishna
name: Verma, Murli Manohar
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We explore the scalar field obtained under the conformal transformation of the spacetime metric $g_{μν}$ from the Jordan frame to the Einstein frame in $f(R)$ gravity. This scalar field is the result of the modification in the gravitational part of the Einstein's general relativistic theory of gravity. For $f(R)=\frac{R^{1+δ}}{R_{c}^δ}$, we find the effective potential of the scalar field and calculate the mass of the scalar field particle "scalaron". It is shown that the mass of the scalaron depends upon the energy density of standard matter in the background. The interaction between standard matter and scalaron is weak in the high curvature regime. This linkage between the mass of the scalaron and the background leads to the physical effects of dark matter and is expected to reflect the anisotropic propagation of scalaron in moving baryonic matter fields as in merging clusters (Bullet cluster, the Abell 520 system, MACS etc.). Such scenario also satisfies the local gravity constraints of $f(R)$ gravity. We further calculate the equation of state of the scalar field in the action-angle variable formalism and show its distinct features as the dark matter and dark energy with respect to energy density of the scalar field at different values of the model parameter $δ$.
description: 6 pages, 5 figures
Uromyces ratus H. S. Jackson & Holw.
Creators: name: Junior, Alcindo Da Silva Martins
name: Gomes, Paulo Weslem Portal
name: Sakuragui, Cássia Mônica
name: Junior, Aníbal Alves De Carvalho
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Pucciniomycetes
Pucciniales
Pucciniaceae
Uromyces
Uromyces ratus

description: Uromyces ratus H.S. Jackson & Holw., Mycologia 24: 102. 1932.
 Type on Cayaponia ternata Cogniaux, Petrópolis, Rio de Janeiro State, Brasil, 27.10. 1921, Holway- 1251. (0/Ipe,IIpe/III).
 SPECIMENS EXAMINED— BRAZIL, RIO DE JANEIRO, Itatiaia, Parque Nacional de Itatiaia, on Cucurbitaceae – Cayaponia sp., 9.XII.2015, II,III, A. Martins Junior, A.A. Carvalho Junior & A. Riguetti 122/15 (RB 757080); on Cucurbitaceae – Cayaponia cabocla (Vell.) Mart., 20.III.2017, A. Martins Junior & A.A. Carvalho Junior 15/17 (RB 757092).
 DESCRIPTION AND ILLUSTRATION: Hennen et al. (2005) and Salazar-Yepes & Carvalho Jr (2010).
description: Published as part of Junior, Alcindo Da Silva Martins, Gomes, Paulo Weslem Portal, Sakuragui, Cássia Mônica & Junior, Aníbal Alves De Carvalho, 2022, Contributions to the knowledge and distribution of Pucciniales (rust fungi) in three Brazilian biomes, pp. 79-117 in Phytotaxa 577 (1) on page 112, DOI: 10.11646/phytotaxa.577.1.4, http://zenodo.org/record/7517579
Additional file 3 of Parameter estimation in models of biological oscillators: an automated regularised estimation approach
Creators: name: Pitt, Jake Alan
name: Banga, Julio R.
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Inorganic Chemistry

description: Detailed results for the Fitzhugh-Nagumo, Repressilator and Enzymatic Oscillator problems. This file contains tables and figures showing the detailed results for the Fitzhugh-Nagumo, Repressilator and Enzymatic Oscillator problems. (PDF 1680 kb)
Role of Defects in Self-Organized Criticality: A Directed Coupled Map Lattice Model
Creators: name: Tadic, Bosiljka
name: Ramaswamy, Ramakrishna
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study a directed coupled map lattice model in two dimensions, with two degrees of freedom associated with each lattice site. The two freedoms are coupled at a fraction $c$ of lattice bonds acting as quenched random defects. In the case of conservative dynamics, at any concentration of defects the system reaches a self-organized critical state with universal critical exponents close to the mean-field values. The probability distributions follow the general scaling form $P(X,L)= L^{-α}{\cal{P}}(XL^{-D_X})$, where $α\approx 1$ is the scaling exponent for the distribution of avalanche lengths, $X$ stands for duration, size or released energy, and $D_X$ is the fractal dimension with respect to $X$. The distribution of current is nonuniversal, and does not show any apparent scaling form. In the case of nonconservative dynamics---obtained by incomplete energy transfer at the defect bonds--- the system is driven out of the critical state. In the scaling region close to $c=0$ the probability distributions exhibit the general scaling form $P(X,c,L)=X^{-τ_X }{\cal{P}}(X/ξ_X (c), XL^{-D_X})$, where $τ_X =α/D_X$ and the coherence length $ξ_X (c)$ depends on the concentration of defect bonds $c$ as $ξ_X (c)\sim c^{-D_X}$.
description: 6 pages, Revtex 3.0, 7 figures available by request on bosiljka.tadic@ijs.si, uuencoded compressed
Conflict reducing innovations in development enable increased multicellular complexity
Creators: name: Howe, Jack
name: Cornwallis, Charlie
name: Griffin, Ashleigh
Publisher: name: Zenodo
Year: 2024
Subjects: germline
Evolution
development

description: Obligately multicellular organisms, where cells can only reproduce as part of the group, have evolved multiple times across the tree of life. Obligate multicellularity has only evolved when clonal groups form by cell division, rather than by cells aggregating, as clonality prevents internal conflict. Yet obligately multicellular organisms still vary greatly in 'multicellular complexity' (the number of cells and cell types): some comprise few cells and cell-types, and others billions of cells and thousands of types. Here, we test if variation in multicellular complexity is explained by conflict-suppressing mechanisms, namely a single cell bottleneck at the start of development, and a strict separation of germline and somatic cells. Applying a phylogenetic comparative analysis to the life-cycles 138 lineages of plants, animals, fungi and algae, we show that an early segregation of the germline stem-cell lineage is key to the evolution of more cell types. In contrast, the presence of a strict single cell bottleneck was not related to either the number of cells or cell types but was associated with early germline segregation. Our results suggest that segregating the germline earlier in development enabled greater evolutionary innovation, possibly through conflict suppression or via greater developmental flexibility.
description: Funding provided by: Carlsberg FoundationCrossref Funder Registry ID: https://ror.org/01kpjmx04Award Number: CF20_0541
Funding provided by: Volkswagen FoundationCrossref Funder Registry ID: https://ror.org/03bsmfz84Award Number: 94818
Funding provided by: Knut and Alice Wallenberg FoundationCrossref Funder Registry ID: https://ror.org/004hzzk67Award Number: 2018.0138
Funding provided by: Crafoord FoundationCrossref Funder Registry ID: https://ror.org/02hwwbr17Award Number: 20210788
Funding provided by: Swedish Research CouncilCrossref Funder Registry ID: https://ror.org/03zttf063Award Number: 2022-03503
Uromyces scleriae Henn.
Creators: name: Junior, Alcindo Da Silva Martins
name: Gomes, Paulo Weslem Portal
name: Sakuragui, Cássia Mônica
name: Junior, Aníbal Alves De Carvalho
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Pucciniomycetes
Pucciniales
Pucciniaceae
Uromyces
Uromyces scleriae

description: Uromyces scleriae Henn., Hedwigia Beiblatt 38: 67. 1899.
 Type on Scleria sp., Mauá, Rio de Janeiro State, Brazil, 06.IV.1897, Ule 2477. (?/? ̿ IIpe/III).
 SPECIMENS EXAMINED— BRAZIL, PARÁ, Melgaço, Floresta Nacional de Caxiuan ã, on Cyperaceae – Scleria williamsii R. Gross, 15.VII.2016, II, III, A. Martins Junior & F. Vaz 167/16 (RB 756910); RIO DE JANEIRO, Itatiaia, Parque Nacinal do Itatiaia, on Cyperaceae – Scleria sp., 24.III.2017, II, A. Martins Junior & A.A. Carvalho Junior 105/17 (RB 757163).
 DESCRIPTION AND ILLUSTRATION: Hennen et al. (2005) and Sot ã o et al. (2009).
description: Published as part of Junior, Alcindo Da Silva Martins, Gomes, Paulo Weslem Portal, Sakuragui, Cássia Mônica & Junior, Aníbal Alves De Carvalho, 2022, Contributions to the knowledge and distribution of Pucciniales (rust fungi) in three Brazilian biomes, pp. 79-117 in Phytotaxa 577 (1) on pages 112-113, DOI: 10.11646/phytotaxa.577.1.4, http://zenodo.org/record/7517579
Fixed-N Superconductivity: The Exact Crossover from the Bulk to the Few-Electron Limit
Creators: name: Braun, Fabian
name: von Delft, Jan
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We use two truly canonical approaches to describe superconductivity in ultrasmall metallic grains: (a) a variational fixed-N projected BCS-like theory and (b) an exact solution of the model Hamiltonian developed by Richardson in context with Nuclear Physics. Thereby we obtain a description of the entire crossover from the bulk BCS regime (mean level spacing $d\ll$ bulk gap $\tildeΔ$) to the `fluctuation-dominated' few-electron regime ($d\gg\tildeΔ$). A wave-function analysis shows in detail how the BCS limit is recovered and how for $d\gg\tildeΔ$ pairing correlations become delocalized in energy space.
description: Short overview (6 pages, 2 figures), comparison to exact results obtained by Richardson in Nuclear Physics
title: Paesaggi di terra e architetture effimere. Conoscenza e valorizzazione delle culture costruttive in terra cruda
Creators: name: De Santis, Elena
Publisher: name: Sapienza University of Rome
publisherIdentifier: https://ror.org/02be6w209
publisherIdentifierScheme: ROR
Year: 2024

description: Nell’ambito della ricerca espressiva dell’autrice sull’uso della terra come forma d’arte, viene approfondita la conoscenza delle culture costruttive legate alla terra cruda. Si tratta di un patrimonio fragile, poco conosciuto e valorizzato che invece necessita di protezione e tutela. Attraverso una personale rubrica di fotografie dei paesaggi di terra, in Italia, che documenta lo stato in cui si trova tale patrimonio, vengono esplorati e indagati gli aspetti sensoriali e l’esperienza tattile, olfattiva e percettiva legata al materiale. Le architetture effimere stimolano l’osservatore a immaginare paesaggi naturali, lasciandolo libero di percepire il ‘luogo’, la forma, lo spazio che più sente vicino. I paesaggi di terra raccontano la bellezza della natura, nella sua essenzialità, e nel suo essere intimamente legata all’uomo. Nei lavori presentati, la terra cruda permette di evocare paesaggi e architetture mutevoli, in continuo cambiamento, veicolando il patrimonio intangibile delle popolazioni locali a cui inerisce. Osservando i colori dei paesaggi rurali italiani, sono stati riprodotti i paesaggi effimeri di terra, esprimendo la volontà di valorizzare il patrimonio in crudo.
Additional file 1 of Parameter estimation in models of biological oscillators: an automated regularised estimation approach
Creators: name: Pitt, Jake Alan
name: Banga, Julio R.
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Computational Biology

description: Remarks on the eSS optimisation solver and detailed results for the Goodwin Oscillator problem and additional ENSO contour plots. This file describes our modifications to the eSS global optimisation solver. It also contains tables and figures showing the detailed results for the Goodwin Oscillator problem, and additional contour plots for the ENSO example. (PDF 1730 kb)
Improved Lower Bound for Difference Bases
Creators: name: Bernshteyn, Anton
name: Tait, Michael
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: A difference basis with respect to $n$ is a subset $A \subseteq \mathbb{Z}$ such that $A - A \supseteq \{1, \ldots, n\}$. Rédei and Rényi showed that the minimum size of a difference basis with respect to $n$ is $(c+o(1))\sqrt{n}$ for some positive constant $c$. The best previously known lower bound on $c$ is $c \geqslant 1.5602\ldots$, which was obtained by Leech using a version of an earlier argument due to Rédei and Rényi. In this note we use Fourier-analytic tools to show that the Leech--Rédei--Rényi lower bound is not sharp.
description: 6 pages; v2: minor changes based on referee report
Comment on "Models of Intermediate Spectral Statistics"
Creators: name: Gorin, T.
name: Mueller, M.
name: Seba, P.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: In [1] it was proposed, that the nearest-neighbor distribution $P(s)$ of the spectrum of the Bohr-Mottelson model is similar to the semi-Poisson distribution. We show however, that $P(s)$ of this model differs considerably in many aspects from semi-Poisson. In addition we give an asymptotic formula for $P(s)$ as $s \to 0$, which gives $P'(0) = π\sqrt{3}/2$ for the slope at $s=0$. This is different not only from the GOE case but also from the semi-Poisson prediction that leads to $P'(0) = 4$
description: 3 pages, 1 eps-figure
Uromyces spermacoces Th
Creators: name: Junior, Alcindo Da Silva Martins
name: Gomes, Paulo Weslem Portal
name: Sakuragui, Cássia Mônica
name: Junior, Aníbal Alves De Carvalho
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Pucciniomycetes
Pucciniales
Pucciniaceae
Uromyces
Uromyces spermacoces

description: Uromyces spermacoces (Shwein.) Tḩm., Cat. Plants North Carolina, p. 123. 1867. (0/I,II/ III).
 BASYONYM— Puccinia spermacoces Schweinitz, Schr. Nat. Ges. Leipzig 1: 74. 1822.
 Type on Diodia teres Walt. (informado como Spermacoces sp.), North Carolina, USA, s. loc., s.d., s.col.
 SPECIMENS EXAMINED— BRAZIL, RIO DE JANEIRO, Itatiaia, Parque Nacional de Itatiaia, on Rubiaceae – Borreria verticillata (L.) G. Mey, 09.XII.2015, II, III, A. Martins Junior, A.A. Carvalho Junior & A. Riguetti 131/15 (RB 757046).
 DESCRIPTION AND ILLUSTRATION: Hennen et al. (2005) and Salazar-Yepes & Carvalho Jr (2010).
description: Published as part of Junior, Alcindo Da Silva Martins, Gomes, Paulo Weslem Portal, Sakuragui, Cássia Mônica & Junior, Aníbal Alves De Carvalho, 2022, Contributions to the knowledge and distribution of Pucciniales (rust fungi) in three Brazilian biomes, pp. 79-117 in Phytotaxa 577 (1) on page 113, DOI: 10.11646/phytotaxa.577.1.4, http://zenodo.org/record/7517579
Integrable SU(m|n) supersymmetric electronic models of strong correlations
Creators: name: Liu, James T.
name: Wang, D. F.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We generalize the SU(2|2) supersymmetric extended Hubbard model of 1/r2 interaction to the SU(m|n) supersymmetric case. Integrable models may be defined on both uniform lattice and non-uniform one dimensional lattices. We study both cases in detail and present the ground state wavefunctions and energy spectra of these models.
description: 24 pages, Latex
\textit{Ab Initio} Path Integral Monte Carlo Results for the Dynamic Structure Factor of Correlated Electrons: From the Electron Liquid to Warm Dense Matter
Creators: name: Dornheim, T.
name: Groth, S.
name: Vorberger, J.
name: Bonitz, M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The accurate description of electrons at extreme density and temperature is of paramount importance for, e.g., the understanding of astrophysical objects and inertial confinement fusion. In this context, the dynamic structure factor $S(\mathbf{q},ω)$ constitutes a key quantity as it is directly measured in X-ray Thomson (XRTS) scattering experiments and governs transport properties like the dynamic conductivity. In this work, we present the first \textit{ab initio} results for $S(\mathbf{q},ω)$ by carrying out extensive path integral Monte Carlo simulations and developing a new method for the required analytic continuation, which is based on the stochastic sampling of the dynamic local field correction $G(\mathbf{q},ω)$. In addition, we find that the so-called static approximation constitutes a promising opportunity to obtain high-quality data for $S(\mathbf{q},ω)$ over substantial parts of the warm dense matter regime.
Charge Screened Nontopological Solitons in a Spontaneously Broken U(1) Gauge Theory
Creators: name: Ishihara, Hideki
name: Ogawa, Tatsuya
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct, numerically, stationary and spherically symmetric nontopological soliton solutions in the system composed of a complex scalar field, a U(1) gauge field, and a complex Higgs scalar field that causes spontaneous symmetry braking. It is shown that the charge of the soliton is screened by counter charge everywhere.
description: 10 pages, 8 figures
Quantum critical behavior of itinerant ferromagnets
Creators: name: Vojta, Thomas
name: Belitz, D.
name: Kirkpatrick, T. R.
name: Narayanan, R.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the quantum phase transition of itinerant ferromagnets. It is shown that correlation effects in the underlying itinerant electron system lead to singularities in the order parameter field theory that result in an effective long-range interaction between the spin fluctuations. This interaction turns out to be generically {\em antiferromagnetic} for clean systems. In disordered systems analogous correlation effects lead to even stronger singularities. The resulting long-range interaction is, however, generically ferromagnetic. We discuss two possibilities for the ferromagnetic quantum phase transition. In clean systems, the transition is generically of first order, as is experimentally observed in MnSi. However, under certain conditions the transition may be continuous with non-mean field critical behavior. In disordered systems, one finds a very rich phase diagram showing first order and continuous phase transitions and several multicritical points.
description: 10 pp., LaTeX, 2 eps figs., requires annalen.cls (included), Invited contribution to Localisation 99, final version as published
Quasi-particle evidence for the nematic state above $T_{\rm{c}}$ in Sr$_x$Bi$_2$Se$_3$
Creators: name: Sun, Yue
name: Kittaka, Shunichiro
name: Sakakibara, Toshiro
name: Machida, Kazushige
name: Wang, Jinghui
name: Wen, Jinsheng
name: Xing, XiangZhuo
name: Shi, Zhixiang
name: Tamegai, Tsuyoshi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the electronic nematic state, an electronic system has a lower symmetry than the crystal structure of the same system. Electronic nematic states have been observed in various unconventional superconductors such as cuprate- and iron-based, heavy-fermion, and topological superconductors. The relation between nematicity and superconductivity is a major unsolved problem in condensed matter physics. By angle-resolved specific heat measurements, we report bulk quasi-particle evidence of nematicity in the topological superconductor Sr$_x$Bi$_2$Se$_3$. The specific heat exhibited a clear 2-fold symmetry despite the 6-fold symmetric lattice. Most importantly, the 2-fold symmetry appeared in the normal state above the superconducting transition temperature. This is explained by the angle-dependent Zeeman effect due to the anisotropic density of states in the nematic phase. Such results highlight the interrelation between nematicity and unconventional superconductivity.
description: 10 pages, 10 figures
Detecting and Studying the Lightest Pseudo-Goldstone Boson at Future $pp$, $e^+e^-$ and $μ^+μ^-$ Colliders
Creators: name: Casalbuoni, R.
name: Deandrea, A.
name: De Curtis, S.
name: Dominici, D.
name: Gatto, R.
name: Gunion, J. F.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: For an attractive class of dynamical symmetry breaking (technicolor) models, the lightest neutral pseudo-Nambu-Goldstone boson ($\pzero$) contains only down-type techniquarks and charged technileptons. We discuss the prospects for discovering and studying the $\pzero$ of such models at the Tevatron and the LHC and at future $\epem$ and $\mupmum$ colliders. Depending upon the number of technicolors, $\ntc$, discovery of the $\pzero$ at the Tevatron and the LHC in the $gg\to\pzero\to\gam\gam$ mode could be possible over a wide range of mass. For $\ntc=4$, discovery of the $\pzero$ at an $\epem$ collider via the reaction $\epem\to\gam \pzero$ should be possible as long as $\mpzero$ is not near $\mz$. In the $\gam\gam$ collider mode of operation at an $\epem$ collider, the $\gam\gam\to\pzero\to b\anti b$ signal should be very robust if $\ntc=4$. For the minimal $\ntc=1$ case, detection of the $\pzero$ at the Tevatron and in $\epem$ collisions will be very difficult, and the precision of measurements at the LHC and the $\gam\gam$ collider decline markedly. A $\mupmum$ collider yields a $\pzero$ production rate that does not depend markedly upon $\ntc$. At a $\mupmum$ collider discovery of the $\pzero$ as an $s$-channel resonance should prove possible via scanning, even if it has not already been detected elsewhere. Once $\mpzero$ is precisely known, operation of the $\mupmum$ collider as a $\pzero$ factory will allow precision measurements of enough observables to determine the number of technicolors of the theory and (up to a discrete set of ambiguities) the fundamental parameters of the low-energy effective Lagrangian describing the Yukawa couplings of the $\pzero$.
description: 54 pages, latex equations.sty, 21 figures; revised to include results for $N_{TC}=1$ as well as $N_{TC}=4$, and other minor changes to yield correspondence to final published version
Spectral Flow, the Magnus Force, and the Josephson-Anderson Relation
Creators: name: Ao, P.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Based on a recent work (Thouless, Ao, and Niu, Transverse force on a quantized vortex in a superfluid) I show that the spectral or momentum flow due to a moving vortex is identical to the phase slippage process discussed by Josephson and Anderson. I also show that the force due to the spectral flow is the reaction force of the Magnus force, and that the two forces act on different objects. Therefore one can conclude that the evaluation of the spepctral flow confirms the results by the Berry's phase calculation of the Magnus force, not the cancelation of the Magnus force as claimed by some authors. A by-product of the present proof is that localized core states do not contribute to the spectral flow, as also noted in the work of Thouless, Ao, and Niu on the Magnus force.
description: Latex, 8 pages
Uromyces vicosensis Almeida
Creators: name: Junior, Alcindo Da Silva Martins
name: Gomes, Paulo Weslem Portal
name: Sakuragui, Cássia Mônica
name: Junior, Aníbal Alves De Carvalho
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Pucciniomycetes
Pucciniales
Pucciniaceae
Uromyces
Uromyces vicosensis

description: Uromyces vicosensis Almeida, Fitopat. Bras. 2: 56. 1977.
 Type on Bauhinia sp., Viçosa, Minas Gerais State, Brazil, s.d., A. S. Mueller 741. (0/Ipe,IIpe/III). Figure 7 (L-P).
SPECIMENS EXAMINED— BRAZIL, SÃO PAULO, Mogi Guaçu, Reserva Biológica de Mogi Guaçu, “Campinhinha” farm,
COMMENTS—This is the first record of this species for S ã o Paulo State.
description: Published as part of Junior, Alcindo Da Silva Martins, Gomes, Paulo Weslem Portal, Sakuragui, Cássia Mônica & Junior, Aníbal Alves De Carvalho, 2022, Contributions to the knowledge and distribution of Pucciniales (rust fungi) in three Brazilian biomes, pp. 79-117 in Phytotaxa 577 (1) on page 113, DOI: 10.11646/phytotaxa.577.1.4, http://zenodo.org/record/7517579
Slicing Theorems and rigidity phenomena for self affine carpets
Creators: name: Algom, Amir
Publisher: name: arXiv
Year: 2018
Subjects: subject: Dynamical Systems (math.DS)
subject: Classical Analysis and ODEs (math.CA)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: Let $F$ be a Bedford-McMullen carpet defined by independent exponents. We prove that $\overline{\dim}_B (\ell \cap F) \leq \max \lbrace \dim^* F -1,0 \rbrace$ for all lines $\ell$ not parallel to the principal axes, where $\dim^*$ is Furstenberg's star dimension (maximal dimension of a microset). We also prove several rigidity results for incommensurable Bedford-McMullen carpets, that is, carpets $F$ and $E$ such that all defining exponents are independent: Assuming various conditions, we find bounds on the dimension of the intersection of such carpets, show that self affine measures on them are mutually singular, and prove that they do not embed affinely into each other. We obtain these results as an application of a slicing Theorem for products of certain Cantor sets. This Theorem is a generlization of the results of Shmerkin and Wu, that proved Furstenberg's slicing Conjecture.
High-energy behavior of strong-field QED in an intense plane wave
Creators: name: Podszus, T.
name: Di Piazza, A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Analytical calculations of radiative corrections in strong-field QED have hinted that in the presence of an intense plane wave the effective coupling of the theory in the high-energy sector may increase as the $(2/3)$-power of the energy scale. These findings have raised the question of their compatibility with the corresponding logarithmic increase of radiative corrections in QED in vacuum. However, all these analytical results in strong-field QED have been obtained within the limiting case of a background constant crossed field. Starting from the polarization operator and the mass operator in a general plane wave, we show that the constant-crossed-field limit and the high-energy limit do not commute with each other and identify the physical parameter discriminating between the two alternative limits orders. As a result, we find that the power-law scaling at asymptotically large energy scales pertains strictly speaking only to the case of a constant crossed background field, whereas high-energy radiative corrections in a general plane wave depend logarithmically on the energy scale as in vacuum. However, we also confirm the possibility of testing the ``power-law'' regime experimentally by means of realistic setups involving, e.g., high-power lasers or high-density electron-positron bunches.
description: 29 pages, 4 figures
title: Turbulent Poiseuille Flow with Wall Transpiration: Analytical Study and Direct Numerical Simulation
Creators: name: Avsarkisov, V. S.
name: Oberlack, M.
name: Khujadze, G.
Publisher: name: IOP Publishing
Year: 2024

description: We present an analytical and direct numerical simulation (DNS) study to describe an incompressible, fully developed turbulent Poiseuille flow with wall transpiration i.e. uniform transverse velocity with constant flux on the wall. The DNS was conducted at Reτ = 250 for different relative transpiration velocities. The DNS data serve as a first test case of a new turbulent scaling law in the form of a logarithm. DNS data validates the new turbulent logarithmic scaling law derived from Lie symmetry theory of the infinite dimensional multi-point correlation equation and is principally different from the classical near-wall log-law. We will show that the DNS data agree with the new turbulent scaling law over practically the whole cross-section of the channel.
The structural and electronic properties of germanium clathrates
Creators: name: Zhao, Jijun
name: Buldum, Alper
name: Lu, Jianping
name: Fong, C. Y.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The structural and electronic properties of germanium clathrates Ge$_{46}$ and K$_8$Ge$_{46}$ are studied by first principles calculations within the local density approximation. The equilibrium structures are obtained by {\em ab initio} pseudopotential calculation combined with dynamic minimizations. The clathrate structure is found as a low energy phase for germanium. The electronic band structures for Ge$_{46}$ clathrates are calculated and the band gap is found to be considerably larger than that of the diamond phase. Due to the effect of pentagonal rings, strong similarity in electronic properties between clathrate and Ge$_{24}$ fullerene structure are found. The effect of doping clathrate cages with metal atoms are examined. The K$_8$Ge$_{46}$ clathrate is found to be metallic with the conduction bands only slightly modified by K dopants.
description: 7 pages, 6 figures