cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SPIRou and the search for brown dwarfs (and exoplanets)
Creators: name: Cook, Neil
name: Artigau, Etienne
name: Bonnefoy, Mickael
name: Metchev, Stanimir
Publisher: name: Zenodo
Year: 2019
Subjects: SPIRou
brown dwarfs
exoplanets
spectra
near infrared

description: SPIRou is a near-infrared spectropolarimeter and high precision velocimeter (0.98 to 2.5 micron, resolution ~70000). We present the first brown dwarf observed with SPIRou and call for collaboration in using SPIRou for brown dwarf science.
Search for a Higgs Boson Decaying into Two Photons with the L3 Detector at LEP
Creators: name: Rosca, A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search is performed for a Higgs boson, decaying into two photons, using the L3 data collected at centre of mass energies between $\sqrt s$ = 189 and 202 GeV, corresponding to an integrated luminosity of 400 pb$^{-1}$. The processes $e^{+}e^{-}\to {Zh} \to {q} \bar{q} γγ$, $e^{+}e^{-}\to {Zh} \to ν\barν γγ$, $e^{+}e^{-}\to {Zh} \to {l}^{+} {l}^{-} γγ$ are considered. The observed data are found to be consistent with the expected background from standard physics processes. Limits on the branching fraction of the Higgs boson decay into two photons as a function of the Higgs mass are shown and a lower mass limit on a fermiophobic Higgs is derived.
description: 3 pages, 2 postscript figures, Presented at the DPF2000 Conference, August 9-12, 2000, The Ohio State University, Columbus, Ohio
Contact Interactions: Results from ZEUS and a Global Analysis
Creators: name: Zarnecki, Aleksander Filip
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a search for signatures of physics processes beyond the Standard Model, various eeqq vector contact interaction hypotheses have been tested in the ZEUS experiment. No significant evidence of a contact interaction signal has been found. The analysis is based on NC e+p DIS data corresponding to an integrated luminosity of 47.7 pb-1 and results in 95% CL limits on the effective mass scales Lambda ranging from 1.7 to 5 TeV for the different one-parameter contact interaction scenarios considered. Within the global analysis, including data from other experiments as well, any contact interactions with mass scale below 2.1 TeV are excluded at 95% CL. Combined mass scale limits for specific one-parameter scenarios range from 5.1 to 18 TeV. Upper limits on possible effects to be observed in future HERA, LEP and Tevatron running are estimated. The total hadronic cross-section at LEP and e-p scattering cross-section at HERA are strongly constrained by existing data, whereas large cross-section deviations are still possible for Drell-Yan lepton pair production at the Tevatron.
description: 4 pages, 3 figures, 1 table. Presented at DIS99, Zeuthen, Germany, April 19-23, 1999
Application of machine learning to viscoplastic flow modeling
Creators: name: Muravleva, E.
name: Oseledets, I.
name: Koroteev, D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We present a method to construct reduced-order models for duct flows of Bingham media. Our method is based on proper orthogonal decomposition (POD) to find a low-dimensional approximation to the velocity and artificial neural network to approximate the coefficients of a given solution in the constructed POD basis. We use well-established augmented Lagrangian method and finite-element discretization in the "offline" stage. We show that the resulting approximation has a reasonable accuracy, but the evaluation of the approximate solution several orders of magnitude times faster.
Measurement of the B0 and B- meson lifetimes in ALEPH
Creators: name: Huttmann, K.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The lifetimed of the Bbar0 and B- meson lifetimes are measured using data recorded on the Z peak with the ALEPH detector at LEP. An improved analysis based on partially reconstructed Bbar0 -> D*+l-nubar and B- -> D0l-nubar decays is presented.
description: 3 pages, 1 figure
Blog: Fast Iterations, Cowboys, and How to Scale 39,185% in Six Years
Creators: name: Peters, Robert
Publisher: name: ORCID
Year: 2018
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences

description: On December 1 we said goodbye to Rob Peters, our Technical Director and one of ORCID’s first employees. We’re sad to see him go but wish him all the best -- and hope you’ll enjoy his look back at how ORCID has changed since he joined in 2012.
On convergence criteria for the coupled flow of Li-Yuan-Zhang
Creators: name: Fei, Teng
name: Guo, Bin
name: Phong, Duong H.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: A one-parameter family of coupled flows depending on a parameter $κ>0$ is introduced which reduces when $κ=1$ to the coupled flow of a metric $ω$ with a $(1,1)$-form $α$ due recently to Y. Li, Y. Yuan, and Y. Zhang. It is shown in particular that, for $κ\not=1$, estimates for derivatives of all orders would follow from $C^0$ estimates for $ω$ and $α$. Together with the monotonicity of suitably adapted energy functionals, this can be applied to establish the convergence of the flow in some situations, including on Riemann surfaces. Very little is known as yet about the monotonicity and convergence of flows in presence of couplings, and conditions such as $κ\not=1$ seem new and may be useful in the future.
Ground-State Phase Diagrams of the Two-Dimensional Quantum Heisenberg Spin Glass Models
Creators: name: Nonomura, Yoshihiko
name: Ozeki, Yukiyasu
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Ground-state properties of the two-dimensional $S=1/2$ random Heisenberg models are investigated by the exact-diagonalization method. The phase diagram of the bond-random model (the $\pm J$ model) is the same as that of the corresponding Ising spin glass model, in spite of quantum fluctuation. In the site-random model, the spin glass phase exists at least in the ferro-rich case. In comparison with the corresponding Ising model, the Néel phase of this model becomes much narrower in the ferro-rich case, while it is comparable in the antiferro-rich case. KEYWORDS: quantum spin glass, Heisenberg model, ground-state phase transition, site-random model, exact diagonalization
description: 5 pages, LaTeX, 5 postscript figures
Echinochaete ruficeps Berk. & Broome, J. Linn. Soc., Bot.
Creators: name: Karunarathna, Samantha C.
name: Priyashantha, K Hasith
name: Tibpromma, Saowaluck
name: Galappaththi, Mahesh C. A.
name: Premarathne, Bhagya M.
name: Wijayawardene, Nalin N.
name: Wimalasena, Madhara K.
name: Jayalal, Udeni
name: Wickramanayake, Kawmini D.
name: Dangalla, Hasanka
name: Jayathunga, Hashini
name: Brahmanage, Rashika S.
name: Weerakoon, Gothamie
name: Ariyawansa, Kahandawa G. S. U.
name: Yapa, Neelamanie
name: Nanayakkara, Chandrika M.
name: Ediriweera, Surani
name: Fan, Xin-Lei
name: Kirk, Paul M.
name: Zhang, Gui-Qing
name: Ediriweera, Aseni
name: Bhat, Jayarama
name: Dawoud, Turki M.
name: Kumara, Wasantha
name: Deng, Chun Ying
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Polyporales
Polyporaceae
Echinochaete
Echinochaete ruficeps

description: F.  ruficeps Berk. & Broome, J. Linn. Soc., Bot. 14 (no. 73): 57 (1873) [1875]/IF: 241029
 Current Name: Echinochaete ruficeps (Berk. & Broome) Ryvarden, Norw. Jl Bot. 19: 231 (1972) (New Classification: Polyporaceae, Polyporales, Agaricomycetes)
Typification Details: Holotype K (M) 155854, Sri Lanka
Reference: Berkeley & Broome (1873)
description: Published as part of Karunarathna, Samantha C., Priyashantha, K Hasith, Tibpromma, Saowaluck, Galappaththi, Mahesh C. A., Premarathne, Bhagya M., Wijayawardene, Nalin N., Wimalasena, Madhara K., Jayalal, Udeni, Wickramanayake, Kawmini D., Dangalla, Hasanka, Jayathunga, Hashini, Brahmanage, Rashika S., Weerakoon, Gothamie, Ariyawansa, Kahandawa G. S. U., Yapa, Neelamanie, Nanayakkara, Chandrika M., Ediriweera, Surani, Fan, Xin-Lei, Kirk, Paul M., Zhang, Gui-Qing, Ediriweera, Aseni, Bhat, Jayarama, Dawoud, Turki M., Kumara, Wasantha & Deng, Chun Ying, 2023, Checklist, typification details, and nomenclature status of Basidiomycota, originally described from Sri Lanka, pp. 1-86 in Phytotaxa 621 (1) on page 52, DOI: 10.11646/phytotaxa.621.1.1, http://zenodo.org/record/10065102
Blog: ORCID Registry Scheduled Outage, December 15, 2018
Creators: name: Simpson, Will
Publisher: name: ORCID
Year: 2018
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences

description: On Saturday, December 15, 2018 the ORCID Registry, including the Public and Member API and the ORCID Registry user interface, will be unavailable for up to eight hours while we migrate our database to new hardware. Will Simpson from our technical team provides more information in this post.
Renormalization Group Improved Small-x Equation
Creators: name: Ciafaloni, M.
name: Colferai, D.
name: Salam, G. P.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose and analyze an improved small-x equation which incorporates exact leading and next-to-leading BFKL kernels on one hand and renormalization group constraints in the relevant collinear limits on the other. We work out in detail the recently proposed omega-expansion of the solution, derive the Green's function factorization properties and discuss both the gluon anomalous dimension and the hard pomeron. The resummed results are stable, nearly renormalization-scheme independent, and join smoothly with the fixed order perturbative regime. Two critical hard pomeron exponents are provided, which - for reasonable strong-coupling extrapolations - are argued to provide bounds on the pomeron intercept.
description: 47 pages LaTeX file including 8 figures, submitted to Phys. Rev. D
Hyperfine-resolved rotation-vibration line list of ammonia (NH$_3$)
Creators: name: Coles, Phillip A.
name: Owens, Alec
name: Küpper, Jochen
name: Yachmenev, Andrey
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: A comprehensive, hyperfine-resolved rotation-vibration line list for the ammonia molecule ($^{14}$NH$_3$) is presented. The line list, which considers hyperfine nuclear quadrupole coupling effects, has been computed using robust, first principles methodologies based on a highly accurate empirically refined potential energy surface. Transitions between levels with energies below $8000$~cm$^{-1}$ and total angular momentum $F\leq14$ are considered. The line list shows excellent agreement with a range of experimental data and will significantly assist future high-resolution measurements of NH$_3$, both astronomically and in the laboratory.
Interference phenomena in the photon production between two oscillating walls
Creators: name: Ji, Jeong-Young
name: Jung, Hyun-Hee
name: Soh, Kwang-Sup
Publisher: name: arXiv
Year: 1997
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the photon production in a 1D cavity whose left and right walls oscillate with the frequency $Ω_{L} $ and $Ω_{R} $, respectively. For $Ω_{L} \neq Ω_{R}, $ the number of generated photons by the parametric resonance is the sum of the photon numbers produced when the left and the right wall oscillates separately. But for $Ω_{L} = Ω_{R} $, the interference term proportional to $\cos ϕ$ is found additionally, where $ϕ$ is the phase difference between two oscillations of the walls.
description: 7 pages, RevTeX, no figures, a sign error corrected
Favolus scaber var. caespitosus Ces., Atti Accad. Sci.
Creators: name: Karunarathna, Samantha C.
name: Priyashantha, K Hasith
name: Tibpromma, Saowaluck
name: Galappaththi, Mahesh C. A.
name: Premarathne, Bhagya M.
name: Wijayawardene, Nalin N.
name: Wimalasena, Madhara K.
name: Jayalal, Udeni
name: Wickramanayake, Kawmini D.
name: Dangalla, Hasanka
name: Jayathunga, Hashini
name: Brahmanage, Rashika S.
name: Weerakoon, Gothamie
name: Ariyawansa, Kahandawa G. S. U.
name: Yapa, Neelamanie
name: Nanayakkara, Chandrika M.
name: Ediriweera, Surani
name: Fan, Xin-Lei
name: Kirk, Paul M.
name: Zhang, Gui-Qing
name: Ediriweera, Aseni
name: Bhat, Jayarama
name: Dawoud, Turki M.
name: Kumara, Wasantha
name: Deng, Chun Ying
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Polyporales
Polyporaceae
Favolus
Favolus scaber
F. scaber var. caespitosus ces., atti accad. sci.

description: F. scaber var. caespitosus Ces., Atti Accad. Sci. fis. mat. Napoli 8 (no. 3): 8 (1879)/IF: 139181
Typification Details: Beccari s.n.
Reference: Cesati (1879)
description: Published as part of Karunarathna, Samantha C., Priyashantha, K Hasith, Tibpromma, Saowaluck, Galappaththi, Mahesh C. A., Premarathne, Bhagya M., Wijayawardene, Nalin N., Wimalasena, Madhara K., Jayalal, Udeni, Wickramanayake, Kawmini D., Dangalla, Hasanka, Jayathunga, Hashini, Brahmanage, Rashika S., Weerakoon, Gothamie, Ariyawansa, Kahandawa G. S. U., Yapa, Neelamanie, Nanayakkara, Chandrika M., Ediriweera, Surani, Fan, Xin-Lei, Kirk, Paul M., Zhang, Gui-Qing, Ediriweera, Aseni, Bhat, Jayarama, Dawoud, Turki M., Kumara, Wasantha & Deng, Chun Ying, 2023, Checklist, typification details, and nomenclature status of Basidiomycota, originally described from Sri Lanka, pp. 1-86 in Phytotaxa 621 (1) on page 53, DOI: 10.11646/phytotaxa.621.1.1, http://zenodo.org/record/10065102
Blog: A Year in ORBIT
Creators: name: Brown, Josh
name: Demeranville, Tom
Publisher: name: ORCID
Year: 2018
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences

description: A year ago, we launched the ORCID Reducing Burden and Improving Transparency (ORBIT) project. Find out how far we've come since then in this post by ORCID staff Josh Brown and Tom Demeranville, who are leading the project.
Special values of derivatives of $L$-series and generalized Stieltjes constants
Creators: name: Murty, M. Ram
name: Pathak, Siddhi
Publisher: name: arXiv
Year: 2018
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11M41

description: The connection between derivatives of $L(s,f)$ for periodic arithmetical functions $f$ at $s=1$ and generalized Stieltjes constants has been noted earlier. In this paper, we utilize this link to throw light on the arithmetic nature of $L'(1,f)$ and certain Stieltjes constants. In particular, if $p$ is an odd prime greater than $7$, then we deduce the transcendence of at least $(p-7)/2$ of the generalized Stieltjes constants, $\{ γ_1(a,p) : 1 \leq a < p \}$, conditional on a conjecture of S. Gun, M. R. Murty and P. Rath.
description: 11 pages
U(2) and Maximal Mixing of nu_{mu}
Creators: name: Hall, Lawrence J.
name: Weiner, Neal
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A U(2) flavor symmetry can successfully describe the charged fermion masses and mixings, and supress SUSY FCNC processes, making it a viable candidate for a theory of flavor. We show that a direct application of this U(2) flavor symmetry automatically predicts a mixing of 45 degrees for nu_mu to nu_s, where nu_s is a light, right-handed state. The introduction of an additional flavor symmetry acting on the right-handed neutrinos makes the model phenomenologically viable, explaining the solar neutrino deficit as well as the atmospheric neutrino anomaly, while giving a potential hot dark matter candidate and retaining the theory's predictivity in the quark sector.
description: 20 pages, 1 figure
Strategies towards a reflective practice for science communicators
Creators: name: Tessa Roedema, Kelly Streekstra
Publisher: name: Zenodo
Year: 2021

description: Opening up sensemaking practices is a process of importance in the current complexity of the world. During this research a high variety of activities were initiated and analysed, and in this deliverable we made an early start of describing how these activities combine into the strategies that open up sensemaking practices. What’s more, the reflective practice and exploration of openness was evaluated as significantly valuable by the participating science communicators. Participants stated their efforts during this research had beneficial effects on their communication activities and in connecting with their audiences in a more profound way, and many shared that they would like to continue with experimenting with reflective practice. Therefore, in order to help out science communicators in these efforts, more tools and exemplary practices can be created, and are requested by the science communication community. This contribution is what the last phases of the RETHINK project will strive to work for.
Microwave Hilbert Transformer and its Applications in Real-time Analog Processing (RAP)
Creators: name: Wang, Xiaoyi
name: Deck-Léger, Zoé-Lise
name: Zou, Lianfeng
name: Azaña, José
name: Caloz, Christophe
Publisher: name: arXiv
Year: 2018
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A microwave Hilbert transformer is introduced as a new component for Real-time Analog Processing (RAP). In contrast to its optical counterpart, that resort to optical fiber gratings, this Hilbert transformer is based on the combination of a branch-line coupler and a loop resonator. The transfer function of the transformer is derived using signal flow graphs, and two figures of merits are introduced to effectively characterize the device: the rotated phase and the transition bandwidth. Moreover, a detailed physical explanation of its physical operation is given, using both a steady-state regime perspective and a transient regime perspective. The microwave RAP Hilbert transformer is demonstrated experimentally, and demonstrated in three applications: edge detection, peak suppression and single sideband modulation.
Probing the QCD pomeron in doubly tagged e^+ e^- collisions
Creators: name: Kwiecinski, J.
name: Motyka, L.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the total cross-section for $γ^* γ^*$ collisions and for the process $e^+ e^- \to e^+ e^- + hadrons$ with two tagged leptons assuming dominance of the QCD pomeron exchange. We solve the BFKL equation including the dominant subleading effects generated by the consistency constraint which restricts the available phase-space of the emitted gluons to the region inwhich the virtuality of the exchanged gluons is dominated by their transverse momentum squared. Estimate of the possible soft pomeron contribution to the $γ^* γ^*$ cross-section is also presented. At very high CM energies $W$ the calculated total $γ^* γ^*$ cross-section exhibits effective power-law $(W^2)^λ$ behaviour with $λ\sim 0.3$. We confront our results with the recent measurements at LEP and give predictions for the energies which can be accessible at TESLA and at other future linear $e^+ e^-$ colliders.
description: 12 pages, LaTeX, 3 figures
title: The squeamish coroner
title: war crimes trials of early reconstruction
titleType: Subtitle
Creators: name: Zaharoff, Charlie
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: war crimes
subject: crimes against humanity
subject: political trials
subject: Reconstruction
subject: Civil War
subject: American Civil War
subject: Joseph Holt
subject: Henry Wirz
subject: Confederacy
subject: George Pickett
subject: John Gee
subject: Hugh Mercer
subject: Ulysses S. Grant
subject: Andrew Johnson
subject: prisoners of war
subject: international law
subject: law and politics
subject: Edwin Stanton
subject: Confederate States of America
subject: U.S. History
subject: post-bellum
subject: 900 Geography and History::970 General history of North America::973 General history of North America; United States

description: Three ex-Confederate officers were tried for war crimes in the aftermath of the American Civil War. These appear to be the first trials in modern history where a government tried officers of an enemy army for violating international customs of war. This thesis offers an integrative analysis of all three trial transcripts. By way of the transcripts and scholarship on the legal and political battles of early Reconstruction, the work clarifies what it was the prosecuting party was after and the extent to which the unfolding of the trials met or broke from their intentions. Doing so offers a strong indication of what allowed these unprecedented trials to take place; at the same time, it suggests what made the federal government abort its broader prosecutorial program after only three trials.
Proposed experimental tests of the Bell-Kochen-Specker theorem
Creators: name: Cabello, Adan
name: Garcia-Alcaine, Guillermo
Publisher: name: arXiv
Year: 1997
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For a two-particle two-state system, sets of compatible propositions exist for which quantum mechanics and noncontextual hidden-variable theories make conflicting predictions for every individual system whatever its quantum state. This permits a simple all-or-nothing state-independent experimental verification of the Bell-Kochen-Specker theorem.
description: LaTeX, 8 pages
Blog: Scaling Up: Easier ORCID iD Authentication for Everyone
Creators: name: Buys, Matthew
Publisher: name: ORCID
Year: 2018
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences

description: At its core, ORCID enables researchers to make connections between themselves and their activities and affiliations. By making the source of these connections transparent, we aim to ensure trust through traceability. We are therefore launching the Research Information Platform Engagement (RIPEN) project, to engage with the community to streamline the assertion process and make it more broadly accessible for everyone.
title: ADCO, Cartulaire de l'office de la Porte de l'abbaye de Cîteaux, Registrum possessionum porte Cistercii (début XVe siècle), Cart. 172 (11 H 69), 115 folios, f. 0007
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi

description: Cartulaire de l'office de la Porte de l'abbaye de Cîteaux, Registrum possessionum porte Cistercii (début XVe siècle), Archives départementales de la Côte-d'Or, Cart. 172 (11 H 69), 115 folios, f. 0007, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de l'office de la Porte de l'abbaye de Cîteaux, Registrum possessionum porte Cistercii (début XVe siècle), Archives départementales de la Côte-d'Or, Cart. 172 (11 H 69), 115 folios, f. 0007, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
Order-parameter fluctuations in the frustrated Heisenberg model on the square lattice
Creators: name: Zhang, Shu
name: Müller, Gerhard
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The $T=0$ dynamics of the two-dimensional $s=1/2$ Heisenberg model with competing nearest-neighbor $(J_1)$ and next-nearest-neighbor $(J_2)$ interactions is explored via the recursion method, specifically the frequency-dependent fluctuations of the order parameters associated with some of the known or suspected ordering tendencies in this system, i.e. Néel, collinear, dimer, and chiral order. The results for the dynamic structure factors of the respective fluctuation operators show a strong indication of collinear order at $J_2/J_1 \gtrsim 0.6$ and a potential for dimer order at $0.5 \lesssim J_2/J_1 \lesssim 0.6$, whereas the chiral ordering tendency is observed to be considerably weaker.
description: RevTex file, 4 ps figs included
A Statistical Study to Determine the Origin of Long-Duration Gamma-ray Flares
Creators: name: Winter, Lisa M.
name: Bernstein, Valerie
name: Omodei, Nicola
name: Pesce-Rollins, Melissa
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Two scenarios have been proposed to account for sustained $\ge 30$\,MeV gamma-ray emission in solar flares: (1) prolonged particle acceleration/trapping involving large-scale magnetic loops at the flare site, and (2) precipitation of high-energy ($>$ 300 MeV) protons accelerated at coronal/interplanetary shock waves. To determine which of these scenarios is more likely, we examine the associated soft X-ray flares, coronal mass ejections (CMEs), and solar energetic proton events (SEPs) for: (a) the long-duration gamma-ray flares (LDGRFs) observed by the Large Area Telescope (LAT) on \Fermi, and (b) delayed and/or spatially-extended high-energy gamma-ray flares observed by the Gamma-ray Spectrometer on the Solar Maximum Mission, the Gamma-1 telescope on the Gamma satellite, and the Energetic Gamma-Ray Experiment Telescope on the Compton Gamma-Ray Observatory. For the \Fermi data set of 11 LDGRFs with $>$100 MeV emission lasting for $\ge \sim 2$ hours, we search for associations and reverse associations between LDGRFs, X-ray flares, CMEs, and SEPs, i.e., beginning with the gamma-ray flares and also, in turn, with X-class soft X-ray flares, fast ($\ge$ 1500 km s$^{-1}$) and wide CMEs, and intense (peak flux $\ge 2.67 \times 10^{-3}$ protons cm$^{-2}$ s$^{-1}$ sr$^{-1}$, with peak to background ratio $>$ 1.38) $>$ 300 MeV SEPs at 1 A.U. While LDGRFs tend to be associated with bright X-class flares, we find that only 1/3 of the X-class flares during the time of \Fermi monitoring coincide with an LDGRF. However, nearly all fast, wide CMEs are associated with an LDGRF. These preliminary association analyses favor the proton precipitation scenario, although there is a prominent counter-example of a potentially magnetically well-connected solar eruption with $>$ 100 MeV emission for $\sim 10$ h for which the near-Earth $>$ 300 MeV proton intensity did not rise above background.
description: accepted in the Astrophysical Journal
Blog: Announcing our New Technology Team Structure
Creators: name: Haak Laurel
Publisher: name: ORCID
Year: 2018
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences

description: Please join me in welcoming Will Simpson as ORCID’s new Technology Director. He will be supported by Liz Krznarich as Tech Lead, and will be working closely with Tom Demeranville as our first Product Director.
Four-point functions in N=4 supersymmetric Yang-Mills theory at two loops
Creators: name: Eden, B.
name: Howe, P. S.
name: Schubert, C.
name: Sokatchev, E.
name: West, P. C.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Four-point functions of gauge-invariant operators in D=4, N=4 supersymmetric Yang-Mills theory are studied using N=2 harmonic superspace perturbation theory. The results are expressed in terms of differential operators acting on a scalar two loop integral. The leading singular behaviour is obtained in the limit that two of the points approach one another. We find logarithmic singularities which do not cancel out in the sum of all diagrams. It is confirmed that Green's functions of analytic operators are indeed analytic at this order in perturbation theory.
description: 26 pages, standard latex, uses feynman.tex, typo corrections, Note added, to appear in Nucl. Phys. B
Hypercat - Hypercube of AGN tori
Creators: name: Nikutta, Robert
Publisher: name: Zenodo
Year: 2019

description: Unification postulates an anisotropic dusty obscurer around AGN,
 possibly a torus. It impedes view onto the central accretion engine
 along some lines of sight. The SEDs of such tori have been modeled
 extensively, but spatially resolved emission morphologies have not,
 presumably because the era of resolved AGN observations only now dawns
 (VLTI/ALMA, TMT/ELT/GMT). Recent data challenge a simple torus
 picture; in some objects the MIR emission is dominated by regions
 above the equatorial plane, suggesting that dusty outflows may be the
 true obscurer. A practical hurdle to systematic morphological studies is that
 resolved models contain ~10^5 more data than SEDs. To break this entry
 barrier we introduce our open-source software HYPERCAT, and with it a
 hypercube of AGN torus images made with CLUMPY (www.clumpy.org). This
 set comprises images for six model parameters and many wavelengths,
 and the corresponding projected dust maps. Users can also plug in
 their own model hypercubes. HYPERCAT interpolates these n-cubes
 continuously, quickly, and reliably. The software can further simulate
 observations of nearby AGN, both with extremely large telescopes and
 interferometers, including modeling the effects of PSF convolution,
 noise addition, detector pixelization, and image deconvolution. Using HYPERCAT we investigate AGN morphologies modeled by CLUMPY, and
 find that a clumpy torus can produce N-band emission patterns extended
 in polar direction, compatible with many observations. We further
 determine the resolvability of nearby AGN with extremely large
 telescopes. We release HYPERCAT, hopeful that it will facilitate
 studies of resolved AGN morphologies without the worry of handling
 very large sets of model images.
Deriving ventilation imaging from 4DCT by deep convolutional neural network
Creators: name: Zhong, Yuncheng
name: Vinogradskiy, Yevgeniy
name: Chen, Liyuan
name: Myziuk, Nick
name: Castillo, Richard
name: Castillo, Edward
name: Guerrero, Thomas
name: Jiang, Steve
name: Wang, Jing
Publisher: name: arXiv
Year: 2018
Subjects: subject: Medical Physics (physics.med-ph)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Purpose: Functional imaging is emerging as an important tool for lung cancer treatment planning and evaluation. Compared with traditional methods such as nuclear medicine ventilation-perfusion (VQ), positron emission tomography (PET), single photon emission computer tomography (SPECT), or magnetic resonance imaging (MRI), which use contrast agents to form 2D or 3D functional images, ventilation imaging obtained from 4DCT lung images is convenient and cost-effective because of its availability during radiation treatment planning. Current methods of obtaining ventilation images from 4DCT lung images involve deformable image registration (DIR) and a density (HU) change-based algorithm (DIR/HU); therefore the resulting ventilation images are sensitive to the selection of DIR algorithms. Methods: We propose a deep convolutional neural network (CNN)-based method to derive the ventilation images from 4DCT directly without explicit DIR, thereby improving consistency and accuracy of ventilation images. A total of 82 sets of 4DCT and ventilation images from patients with lung cancer were studied using this method. Results: The predicted images were comparable to the label images of the test data. The similarity index and correlation coefficient averaged over the ten-fold cross validation were 0.883+-0.034 and 0.878+-0.028, respectively. Conclusions: The results demonstrate that deep CNN can generate ventilation imaging from 4DCT without explicit deformable image registration, reducing the associated uncertainty.
The Quantum Canonical Ensemble
Creators: name: Brody, D. C.
name: Hughston, L. P.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The phase space of quantum mechanics can be viewed as the complex projective space endowed with a Kaehlerian structure given by the Fubini-Study metric and an associated symplectic form. We can then interpret the Schrodinger equation as generating a Hamiltonian dynamics. Based upon the geometric structure of the quantum phase space we introduce the corresponding natural microcanonical and canonical ensembles. The resulting density matrix for the canonical ensemble differs from density matrix of the conventional approach. As an illustration, the results are applied to the case of a spin one-half particle in a heat bath with an applied magnetic field.
description: 8 pages, minor corrections. to appear in JMP vol. 39
Spectral Evidence for Emergent Order in Ba$_{1-x}$Na$_x$Fe$_2$As$_2$
Creators: name: Yi, M.
name: Frano, A.
name: Lu, D. H.
name: He, Y.
name: Wang, M.
name: Frandsen, B. A.
name: Kemper, A. F.
name: Yu, R.
name: Si, Q.
name: Wang, L.
name: He, M.
name: Hardy, F.
name: Schweiss, P.
name: Adelmann, P.
name: Wolf, T.
name: Hashimoto, M.
name: Mo, S. -K.
name: Hussain, Z.
name: Tacon, M. Le
name: Bohmer, A. E.
name: Lee, D. -H.
name: Shen, Z. -X.
name: Meingast, C.
name: Birgeneau, R. J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report an angle-resolved photoemission spectroscopy study of the iron-based superconductor family, Ba$_{1-x}$Na$_x$Fe$_2$As$_2$. This system harbors the recently discovered double-Q magnetic order appearing in a reentrant C$_4$ phase deep within the underdoped regime of the phase diagram that is otherwise dominated by the coupled nematic phase and collinear antiferromagnetic order. From a detailed temperature-dependence study, we identify the electronic response to the nematic phase in an orbital-dependent band shift that strictly follows the rotational symmetry of the lattice and disappears when the system restores C$_4$ symmetry in the low temperature phase. In addition, we report the observation of a distinct electronic reconstruction that cannot be explained by the known electronic orders in the system.
Hexagonia durissima Berk. & Broome, J. Linn. Soc., Bot.
Creators: name: Karunarathna, Samantha C.
name: Priyashantha, K Hasith
name: Tibpromma, Saowaluck
name: Galappaththi, Mahesh C. A.
name: Premarathne, Bhagya M.
name: Wijayawardene, Nalin N.
name: Wimalasena, Madhara K.
name: Jayalal, Udeni
name: Wickramanayake, Kawmini D.
name: Dangalla, Hasanka
name: Jayathunga, Hashini
name: Brahmanage, Rashika S.
name: Weerakoon, Gothamie
name: Ariyawansa, Kahandawa G. S. U.
name: Yapa, Neelamanie
name: Nanayakkara, Chandrika M.
name: Ediriweera, Surani
name: Fan, Xin-Lei
name: Kirk, Paul M.
name: Zhang, Gui-Qing
name: Ediriweera, Aseni
name: Bhat, Jayarama
name: Dawoud, Turki M.
name: Kumara, Wasantha
name: Deng, Chun Ying
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Polyporales
Polyporaceae
Hexagonia
Hexagonia durissima

description: H. durissima Berk. & Broome, J. Linn. Soc., Bot. 14 (no. 73): 57 (1873) [1875/IF: 246031
 Current Name: Daedalea sulcata (Berk.) Ryvarden, Norw. Jl Bot. 24: 216 (1977) (New classification: Fomitopsidaceae, Polyporales, Agaricomycetes)
Typification Details: Holotype K (M), Gardner 972, On dead wood, Sri Lanka
Reference: Berkeley & Broome (1875)
description: Published as part of Karunarathna, Samantha C., Priyashantha, K Hasith, Tibpromma, Saowaluck, Galappaththi, Mahesh C. A., Premarathne, Bhagya M., Wijayawardene, Nalin N., Wimalasena, Madhara K., Jayalal, Udeni, Wickramanayake, Kawmini D., Dangalla, Hasanka, Jayathunga, Hashini, Brahmanage, Rashika S., Weerakoon, Gothamie, Ariyawansa, Kahandawa G. S. U., Yapa, Neelamanie, Nanayakkara, Chandrika M., Ediriweera, Surani, Fan, Xin-Lei, Kirk, Paul M., Zhang, Gui-Qing, Ediriweera, Aseni, Bhat, Jayarama, Dawoud, Turki M., Kumara, Wasantha & Deng, Chun Ying, 2023, Checklist, typification details, and nomenclature status of Basidiomycota, originally described from Sri Lanka, pp. 1-86 in Phytotaxa 621 (1) on page 53, DOI: 10.11646/phytotaxa.621.1.1, http://zenodo.org/record/10065102
Bounds on New Physics from the New Data on Parity Violation in Atomic Cesium
Creators: name: Casalbuoni, R.
name: De Curtis, S.
name: Dominici, D.
name: Gatto, R.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We assume the latest experimental determination of the weak charge of atomic cesium and analyze its implications for possible new physics. We notice that the data would imply positive upper and lower bounds on the new physics contribution to the weak charge, $δ_NQ_W$. The required new physics should be of a type not severely constrained by the high energy precision data. A simplest possibility would be new neutral vector bosons almost un-mixed to the $Z$ and with sizeable couplings to fermions. The lower positive bound would however forbid zero or negative $δ_NQ_W$ and exclude not only the standard model but also models with sequential $Z^\prime$, in particular simple-minded towers of $Z$-like excitations from extra-dimensions. The bound would also imply an upper limit on the $Z^\prime$ mass within the models allowed. Conclusions are also derived for models of four-fermion contact interactions.
description: 11 pages, Latex, 1 PS figure, final version for Physics Letters
A Study on Nutritional Composition and GC-MS Phytochemical Analysis of Thaumatococcus daniellii Leaves
Creators: name: A. V. Iwueke
name: N. J. Ejekwumadu
name: E. C. Chukwu
name: J. A. Nwodu
name: C. Akalonu
Publisher: name: Zenodo
Year: 2021
Subjects: Thaumatococcus daniellii
phytochemical
nutrient composition

description: Aims: There is a high risk associated with using artificial materials like polyethylene or foil for wrapping foods before cooking. The present study investigated the phytochemical and nutrient composition of Thaumatococus daniellii leaf, a local food wrapper. The use of this leaf is very ancient, and a close study of this leaf revealed that it has a large surface area and can be used to wrap large volumes of foods, Place and Duration of Study: Biochemistry Unit, Department of Science Laboratory Technology, Imo State Polytechnic Umuagwo, between April and May 2018. Methodology: The phytochemical compounds were analyzed using gas chromatography coupled with mass spectrometry (GC-MS) while proximate and vitamin composition were determined using standard analytical methods. Results: The GC-MS phytochemical analysis revealed the presence of eight (8) bioactive compounds 1,2,3,4-Butanetetrol, d-Glycero-d-idoheptose, Cyclopentane,1-ethyl-1-methyl-, 6-Octyl-1-ol,3,7-dimethyl-, 2-Octenal, E- Octane,1-chloro-,2-Acetoxy-1,1,10-trimethyl-6,9-epidioxydecalin and Bicyclo[3.1.1]heptan-3-ol,2,6,6-trimethyl-,(1α,2β,3α,5α)- while vitamin assay results showed that Thaumatococcus daniellii leaf contained 3.1 mg/100g of vitamin A, 1.07 mg/100 g vitamin B1, 1.32 mg/100 g vitamin B3, 1.11 mg/100 g of vitamin B5, 16.34 mg/100 g of vitamin B6, 11.86 mg/100 g of vitamin B12 and 25.19 mg/100 g of vitamin C. Result of proximate analysis indicates that Thaumatococcus daniellii leaf contains 10.15% ash, 9.67% moisture, 20.41% protein, 11.42% lipids, 13.78% fibre and 34.57% carbohydrate. Conclusion: In summary, our findings indicate that Thaumatococcus daniellii leaves contain bioactive compounds, an appreciable number of vitamins and high nutritional constituents. Hence Thaumatococcus daniellii leaves can be incorporated into animal feed, taking into cognizance the high protein, fat and vitamin contents. These suggest that it may play critical medicinal and nutritional roles and probably be a safer alternative to polyethylene paper and aluminum foil wraps; hence justifying its local usage as food wrapper. The leaves may also serve as a lead for the production of a healthier material for wrapping local foods.
Accurate radial velocity and metallicity of the Large Magellanic Cloud old globular clusters NGC 1928 and NGC 1939
Creators: name: Piatti, A. E.
name: Hwang, N.
name: Cole, A. A.
name: Angelo, M. S.
name: Emptage, B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present results obtained from spectroscopic observations of red giants located in the fields of the Large Magellanic Cloud (LMC) globular clusters (GCs) NGC 1928 and NGC 1939. We used the GMOS and AAOmega+2dF spectrographs to obtain spectra centred on the CaII triplet, from which we derived individual radial velocities (RVs) and metallicities. From cluster members we derived mean RVs of RV_NGC1928=249.58+-4.65 km/s and RV_NGC939=258.85+-2.08 km/s, and mean metallicities of [Fe/H]_NGC1928=-1.30+-0.15 dex and [Fe/H]_NGC1939=-2.00+-0.15 dex. We found that both GCs have RVs and positions consistent with being part of the LMC disc, so that we rule out any possible origin but that in the same galaxy. By computing the best solution of a disc that fully contains each GC, we obtained circular velocities for the 15 known LMC GCs. We found that 11/15 of the GCs share the LMC rotation derived from $HST$ and $Gaia$ DR2 proper motions. This outcome reveals that the LMC disc existed since the very early epoch of the galaxy formation and experienced the steep relatively fast chemical enrichment shown by its GC metallicities. The four remaining GCs turned out to have circular velocities not compatible with an in situ cluster formation, but rather with being stripped from the SMC.
description: 10 pages, 9 figures. Accepted for publication in Monthly Notices of the Royal Astronomical Society
Blog: Signing the ORCID Funder Open Letter
Creators: name: Christian, Gutknecht
name: Hill, Michael
Publisher: name: ORCID
Year: 2018
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences

description: Today sees the launch of the ORCID funder open letter - a commitment by nine funding bodies to expand the use of ORCID in their grant application and management workflows following our best practices. In this guest post, Christian Gutknecht and Michael Hill, respectively Specialist for Information Systems and Deputy Head of Strategy Support at the Swiss National Science Foundation, explain why their organization is a signatory, describe their current and future ORCID implementation plans, and encourage other funding bodies to sign the open letter.
Lowest Landau level broadened by a Gaussian random potential with an arbitrary correlation length: An efficient continued-fraction approach
Creators: name: Böhm, Markus
name: Broderix, Kurt
name: Leschke, Hajo
Publisher: name: arXiv
Year: 1995
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: For an electron in the plane subjected to a perpendicular constant magnetic field and a homogeneous Gaussian random potential with a Gau{ss}ian covariance function we approximate the averaged density of states restricted to the lowest Landau level. To this end, we extrapolate the first 9 coefficients of the underlying continued fraction consistently with the coefficients' high-order asymptotics. We thus achieve the first reliable extension of Wegner's exact result [Z. Phys. B {\bf 51}, 279 (1983)] for the delta-correlated case to the physically more relevant case of a non-zero correlation length.
description: 9 pages ReVTeX, three figures
Coexisting spin and Rabi-oscillations at intermediate time in electron transport through a photon cavity
Creators: name: Gudmundsson, Vidar
name: Gestsson, Hallmann
name: Abdullah, Nzar Rauf
name: Tang, Chi-Shung
name: Manolescu, Andrei
name: Moldoveanu, Valeriu
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We model theoretically the time-dependent transport through an asymmetric double quantum dot etched in a two-dimensional wire embedded in a FIR photon cavity. For the transient and the intermediate time regimes the currents and the average photon number are calculated by solving a Markovian master equation in the dressed-states picture, with the Coulomb interaction also being taken into account. We predict that in the presence of a transverse magnetic field the interdot Rabi oscillations appearing in the intermediate and transient regime coexist with slower non-equilibrium fluctuations in the occupation of states for opposite spin orientation. The interdot Rabi oscillation induces charge oscillations across the system and a phase difference between the transient source and drain currents. We point out a difference between the steady-state correlation functions in the Coulomb blocking and the photon-assisted transport regimes.
description: RevTeX, 10 pages with 10 included eps figures and 1 video
Интеллектуальная собственность в киберпространстве
Creators: name: Орифова, Мухаббатхон
Publisher: name: Zenodo
Year: 2024

description: Объекты интеллектуальной собственности приобретают большую значимость вместе с широкомасштабными реформами, которые проводятся в Республике Узбекистан на сегодняшний день для развития экономики страны. В свою очередь, данные процессы приводят к принятию мер для усиления правовой защиты объектов интеллектуальной собственности не только в реальном мире, но и в киберпространстве, так как развитие информационно-коммуникационных технологий так или иначе затрагивает общественные отношения, связанные с созданием, использованием, передачей объектов интеллектуальной собственности.
Plasmon interactions in the quark-gluon plasma
Creators: name: Metaxas, D.
name: Nair, V. P.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Yang-Mills theory at finite temperature is rewritten as a theory of plasmons which provides a Hamiltonian framework for perturbation theory with resummation of hard thermal loops.
description: 12 pages, LaTeX, minor typos corrected, discussion added