cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exploring Fine Subpixel Spatial Resolution of Hybrid CMOS Detectors
Creators: name: Bray, Evan
name: Falcone, Abraham
name: Hull, Samuel V.
name: Burrows, David N.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: When an X-ray is incident onto the silicon absorber array of a detector, it liberates a large number of electrons, which tend to diffuse outward into what is referred to as the charge cloud. This number can vary from tens to thousands across the soft X-ray bandpass (0.1 - 10 keV). The charge cloud can then be picked up by several pixels, and forms a specific pattern based on the exact incident location of the X-ray. We present experimental results on subpixel resolution for a custom H2RG with 36 micron pixels, presented in Bray 2018, and compare the data to simulated images . We then apply the model simulation to a prototype small pixel hybrid CMOS detector (HCD) that would be suitable for the Lynx X-ray surveyor. We also discuss the ability of a small pixel detector to obtain subpixel resolution.
Integrability and WKB solution of twist-three evolution equations
Creators: name: Belitsky, A. V.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We identify an integrable one-dimensional inhomogeneous three-site open spin chain which arises in the problem of diagonalization of twist-three quark-gluon evolution equations in QCD in the chiral-odd sector. Making use of the existence of a non-trivial `hidden' integral of motion the problem of diagonalization of the evolution kernels is reduced to the study of a second order finite-difference equation which is solved in WKB approximation for large conformal spins of the three-particle system. The energies (alias anomalous dimensions) of eigenstates with different scale dependence are found in limiting cases and compared with numerical calculations.
description: 26 pages, LaTeX, 4 figures; typos fixed
Dirinaria picta Clem. & Shear
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Caliciales
Caliciaceae
Dirinaria
Dirinaria picta

description: Dirinaria picta (Sw.) Clem. & Shear
PREVIOUS REPORT. — Mistry (1998).
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 120, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
Two-Dimensional 8-State Potts Model on Random Lattices: A Monte Carlo Study
Creators: name: Janke, Wolfhard
name: Villanova, Ramon
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We use two-dimensional Poissonian random lattices of Voronoi/ Delaunay type to study the effect of quenched coordination number randomness on the nature of the phase transition in the eight-state Potts model, which is of first order on regular lattices. From extensive Monte Carlo simulations we obtain strong evidence that the phase transition remains first order for this type of quenched randomness. Our result is in striking contrast to a recent Monte Carlo study of quenched bond randomness for which the order of the phase transition changes from first to second order.
description: 9 pages, uuencoded, includes 5 figures, 122332 bytes
Strings at the Intermediate Scale, or is the Fermi Scale Dual to the Planck Scale?
Creators: name: Burgess, C. P.
name: Ibanez, L. E.
name: Quevedo, F.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that if the string scale is identifed with the intermediate scale, $M_s=\sqrt{M_W M_{Planck}} \sim 10^{11}$ GeV, then the notorious hierarchy, $M_W/M_{Planck} \sim 10^{-16}$, can be explained using only $M_c/M_s \sim 0.01 \sim α_{GUT} $ as small input parameters, where $M_c$ is the compactification scale. This is possible for weakly-coupled Type-I open-string vacua if the observed world is assumed to live in an N=1 supersymmetric 3-brane sector coupled to a separate, hidden, 3-brane world which breaks supersymmetry, because for such a model $M_W/M_{Planck} = 1/2 α_{GUT}^2 (M_c/M_s)^6$. We discuss some of the phenomenological issues presented by such an intermediate-scale string, showing that its benefits include: (i) the possibility of logarithmic gauge-coupling unification of the SM couplings at $M_s$; (ii) a natural axionic solution to the strong-CP problem with a phenomenologically-acceptable Peccei-Quinn scale; (iii) experimentally-interesting neutrino masses, and more.
description: 16 pages, LaTeX, no figures
Understanding Philanthropy
Creators: name: Harvey, Charles
name: Maclean, Mairi
name: Price, Michael
name: Harizanova, Vesela
Publisher: name: figshare
Year: 2019
Subjects: subject: 150310 Organisation and Management Theory
subject: FOS: Economics and business
subject: 150304 Entrepreneurship

description: Philanthropy is the voluntary gift of resources from private wealth to promote charitable causes, projects or organizations. Based on original research and a review of the existing literature, the purpose of this paper, specially commissioned for the Generosity Festival, is to provide a comprehensive overview of the philanthropic landscape in Britain and to explain how philanthropy serves as a force for good in society. It begins by introducing the types of actors operating in the philanthropic field; the often confusing array of donors, foundations and beneficiaries of different types and hues. It outlines the choices confronting philanthropists and the different organisations and tools that exist to facilitate, maximize and effectively utilize philanthropic giving.
In the paper, you can also read about the motivations behind philanthropy and the wide range of causes philanthropists support. Philanthropy plays an important role in social innovation through the founding of new organisations and institutions. Large numbers of schools, libraries, hospitals, universities, churches, parks and gardens and community organizations have their roots in philanthropy. Tens of thousands of front-line charities, tackling deep-seated problems at home and abroad and improving the lives of millions of people, are sustained largely by the generosity of private individuals.
Overall, the concise discussion of a complex topic makes this paper a valuable introductory guide for prospective philanthropists, third sector professionals, board members of charitable trusts and foundations, interested academics and anyone else interested in understanding how philanthropy works
Low-field electromagnet for a high-resolution MRI system
Creators: name: Rigla, Juan P.
name: Bodker, Franz
name: Anari, Amir
name: Pallás, Eduardo
name: Grau, Daniel
name: Puchalt, Guillermo
name: González, José M.
name: Corberán, Miguel
name: Díaz, Elena
name: Algarín, José M.
name: Ríos, Alfonso
name: Benlloch, José M.
name: Alonso, Joseba
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: This paper presents the design and experimental characterization of a 1 T electromagnet tailored to meet the demands of a Magnetic Resonance Imaging (MRI) system conceived for spatial resolutions at the level of tens of microns. For high image quality, MRI requires an homogeneous magnetic field over the Field of View (FoV) where the sample is imaged. We measure the relative inhomogeneity of the field generated by our magnet to be well below 100 parts per million over a spherical FoV of 20 mm diameter, while strongly constraining fringe field lines to avoid interference with other devices. The magnet performance closely follows our expectations from numerical simulations in all the experimental tests carried out. Additionally, we present the solutions adopted for thermal management and the design of a mechanical structure to distribute the weight and integrate the platform to move the sample in and out of the magnet.
description: 7 pages, 14 figures
Soft rescattering in the timelike proton form factor within a spacetime scheme
Creators: name: Bianconi, Andrea
name: Tomasi-Gustafsson, Egle
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The annihilation of a lepton pair into a proton-antiproton pair, and the reverse process, allow for a measurement of the timelike proton form factors. This work aims at studying the corrections due to direct soft interactions between the proton and the antiproton before their annihilation or after their creation. The analysis is carried on in the spacetime formalism used by us in a series of recent works on timelike FFs. In particular the effect of $\bar{p}p$ annihilation into many-meson states is considered. We expect it to determine similar real and imaginary parts for the form factor near the $\bar{p}p$ channel threshold. We also discuss the possibility that the timelike FF differ by a phase in the hadron pair production and annihilation.
description: 19 pages, 10 figures
The renormalized gauge coupling and non-perturbative tests of dimensional reduction
Creators: name: Laine, M.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In 4d lattice simulations of Standard Model like theories, the renormalized gauge coupling in the broken phase can be determined from the prefactor of the Yukawa term in the static potential. We compute the same quantity in terms of the conventional MSbar scheme gauge coupling. The result allows for a further non-perturbative test of finite temperature dimensional reduction, by a comparison of the critical temperatures for the electroweak phase transition as obtained with 4d lattice simulations and with 3d effective theory simulations.
description: 17 pages; a slightly extended version, results unchanged
title: Signs of Submersion
Creators: name: Kerfoot, Brittany N
Publisher: name: George Mason University
Year: 2015
Subjects: subject: Magical realism
subject: Love
subject: Relationships
subject: Mermaid
subject: Fiction
subject: Simba

description: This work was embargoed by the author and will not be publicly available until April 2020.
description: Signs of Submersion is a collection of short stories that seeks to illuminate how relationships function in not-so-everyday life. From a man in courtship with his sex doll, to a couple in the final act of their lives coping with dementia, to a young woman on the cusp of consummating her love for adult Simba from The Lion King, these stories explore the dysfunction, heartbreak, and unexpected surprises of love in the contemporary world and beyond.
Functional morphology of intertidal seaweeds; adaptive significance of aggregate vs. solitary forms
Creators: name: Taylor, PR
name: Hay, ME
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1984

description: Many intertidal seaweeds show a tremendous gradient of morphological form ranging from spatially separated thalli, to thalli that are aggregated into dense turfs. Aggregation of seaweeds into turfs decreases productivity per g organic weight due to crowding of thalli but increases resistance to desiccation. The intertidal distribution of the turf growth form is correlated with the intensity of desiccation stress. Also turfs transplanted into tide pools developed the non-turf morphology, while non-turfs transplanted to emergent substrate either developed the turf form or died. The turf growth form is energetically expensive; apparent productivity of turfs was 23 to 48 % less than that of individuals. Increasing light and nutrients available to turfs by separating the thalli increased apparent productivity by 36 to 113 %. We tested the hypothesis that these turfs minimize energetic costs of this aggregated growth form through the spatial partitioning of photosynthetic and respirative activity. The lower portions of turfs showed less apparent photosynthesis than the upper portions (reductions of 37 to 85 %); however, this spatial partitioning was also found in the individual forms (37 to 63 % reductions) of these relatively simple seaweeds. Spatial differentiation of respiration was similar in turfs and nonturfs. The seaweeds, examined are able to alter the extent of thalli compaction in accordance with varying levels of environmental stress. This phenotypic plasticity allows seaweeds to adopt morphological features that maximize fitness in a wide variety of habitats without being developmentally committed.
Fissurina dumastii Fee
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Ostropales
Graphidaceae
Fissurina
Fissurina dumastii

description: Fissurina dumastii Fée
NEW REPORT. — Parque Nacional de Brasília, on bark, leg. J.A.R. Silva, ISE 53291. New to Distríto Federal.
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 120, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
title: Engaging Provention: A Pressing Question of Need
Creators: name: Dunn, David J
Publisher: name: School for Conflict Analysis and Resolution
Year: 2013

description: “In three major sections, what follows is unified by the notion of need. The uses of this term are slightly different, but there is a unity throughout. That unity is the life and work of John W. Burton, whose contribution was recognized and celebrated at the conference, held at ‘Point of View’ in April and May of 2011, that preceded this work. Over the course of 40 years my engagement with John Burton followed no consistent pattern. He was one of my teachers when I was an undergraduate student at University College in London, and I was immediately attracted to his way of thinking and his engagement with students. He did not look down on us, but trusted our opinions and urged us to think creatively, and he valued our opinions. We went, necessarily, our separate ways, and after graduate school in the United States and London I embarked on a career teaching International Relations in the United Kingdom. Though I did not encounter Burton for two decades, his work and perspective stayed with me and influenced my own approach to the study and teaching of the subject. When I did re-engage with Burton’s work, it influenced me profoundly, to the extent that I wanted to write a study of its evolution: the importance of it, as far as I was concerned, was such that it needed to be engaged more widely and more significantly (See Dunn, 2004). That purpose is restated here. In the last years of Burton’s life I got to know him well. I visited him often (at least as often as intercontinental travel and work allowed) at his home in Canberra, and we conversed long and frequently. What is striking is that, even as the years advanced, he was driven. He had a routine: breakfast, newspapers and journals, ostensibly a nap, then writing. He rested, but his mind was always active, pushing forward his own thoughts. He was not an angry man, but he was not content either. He was driven by the belief that the way things are are not the way they have to be. (See for example, Burton 2008). He resisted that notion, intellectually and viscerally.”
The Cepheid period -- luminosity -- metallicity relation based on Gaia DR2 data
Creators: name: Groenewegen, M. A. T.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use parallax data from the Gaia second data release (GDR2), combined with parallax data based on Hipparcos and HST data, to derive the period-luminosity-metallicity (PLZ) relation for Galactic classical cepheids (CCs) in the V,K, and Wesenheit WVK bands. An initial sample of 452 CCs are extracted from the literature with spectroscopically derived iron abundances. Reddening values, pulsation periods, and mean magnitudes are taken from the literature. Based on nine CCs with a goodness-of-fit (GOF) statistic <8 and with an accurate non-Gaia parallax, a parallax zero-point offset of -0.049 +- 0.018 mas is derived. Selecting a GOF statistic <8 removes about 40\% of the sample most likely related due to binarity. Excluding first overtone and multi-mode cepheids and applying some other criteria reduces the sample to about 200 stars. The derived PL(Z) relations depend strongly on the parallax zero-point offset. The slope of the PL relation is found to be different from the relations in the LMC at the 3 sigma level. Fixing the slope to the value found in the LMC leads to a distance modulus (DM) to the LMC of order 18.7 mag, larger than the canonical distance. The canonical DM of around 18.5 mag would require a parallax zero-point offset of order $-0.1$ mas. Given the strong correlation between zero point, period and metallicity dependence of the PL relation, and the parallax zero-point offset there is no evidence for a metallicity term in the PLZ relation. The GDR2 release does not allow us to improve on the current distance scale based on CCs. The value of and the uncertainty on the parallax zero-point offset leads to uncertainties of order 0.15 mag on the distance scale. The parallax zero-point offset will need to be known at a level of 3 microas or better to have a 0.01 mag or smaller effect on the zero point of the PL relation and the DM to the LMC.
description: Accepted 23 July by A&A
Exponential suppression of radiatively induced mass in the truncated overlap
Creators: name: Kikukawa, Y.
name: Neuberger, H.
name: Yamada, A.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A certain truncation of the overlap (domain wall fermions) contains $k$ flavors of Wilson-Dirac fermions. We show that for sufficiently weak lattice gauge fields the effective mass of the lightest Dirac particle is exponentially suppressed in $k$. This suppression is seen to disappear when lattice topology is non-trivial. We check explicitly that the suppression holds to one loop in perturbation theory. We also provide a new expression for the free fermion propagator with an arbitrary additional mass term.
description: 26 pages, plain TeX
Fissurina pseudostromatica Lucking & Rivas Plata
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Ostropales
Graphidaceae
Fissurina
Fissurina pseudostromatica

description: Fissurina pseudostromatica Lücking & Rivas Plata
NEW REPORT. — Parque Nacional de Brasília, on bark, leg. J.A.R. Silva, ISE 52762. New to Distríto Federal.
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 120, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
Seaweed susceptibility to herbivory: chemical and morphological correlates
Creators: name: Paul, VJ
name: Hay, ME
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1986

description: The susceptibility of 82 species of tropical seaweeds to grazing by herbivorous fishes was assessed on 8 different coral reefs in the Florida Keys, USA. Most species were simultaneously assayed for the presence or absence of unusual secondary metabolites and recorded as having either calcified or uncalcified thalli. Both production of secondary metabolites and of a calcified thallus were associated with low susceptibility to herbivory. However, the relative importance of calcification versus chemical deterrents cannot be assessed for the calcified species since almost all these also contained secondary metabolites. Eighty-five % of calcified species, but only 39 % of uncalcified species, produced secondary metabolites. Secondary metabolites were produced by 71 % of the species least susceptible to herbivory (75 % eaten). Calcified thalli were produced by 50 % of the lowest preference species but by only 9 % of the highest preference species. Thus, several common reef seaweeds appear to resist herbivory by relying primarily on chemical deterrents (genera Dictyota, Dilophus, Stypopodium, Lobophora, Avrainvillea, and some Caulerpa species) but many appear to combine both chemical and morphological defenses (genera Penicillus, Halimeda, Rhipocephalus, Udotea, Amphiroa, and Galaxaura). We suggest that multiple defenses will be common among seaweeds on coral reefs since herbivore diversity is high and it is unlikely that any single defense will be effective against the many types of herbivores that encounter these plants. This may account, in part, for the diversity of secondary metabolites produced by some tropical seaweeds.
Tails and probabilities for extreme outliers
Creators: name: Jordanova, Pavlina
name: Peteva, Monika
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistics Theory (math.ST)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G70, 60E05

description: The task of estimation of the tails of probability distributions having small samples seems to be still opened and almost unsolvable. The paper tries to make a step in filling this gap. In 2017 Jordanova et al. introduce six new characteristics of the heaviness of the tails of theoretical distributions. They rely on the probability to observe {\color{blue}mild or} extreme outliers. The main their advantage is that they always exist. This work presents some new properties of these characteristics. Using them six distribution sensitive estimators of the extremal index are defined. A brief simulation study compares their quality with the quality of Hill, t-Hill, Pickands and Deckers-Einmahl-de Haan estimators.
description: Tenth Jubilee Conference of the Euro-American Consortium for Promoting the Application of Mathematics in Technical and Natural Sciences, Albena, Bulgaria, June 20-25, 2018
The making of ...... some thoughts by John Hillier
Creators: name: Hillier, John
Publisher: name: Loughborough University
Year: 2018
Subjects: subject: Environmental Science
subject: 40604 Natural Hazards
subject: FOS: Earth and related environmental sciences

description: A personal commentary on the briefing note "Investing In Science For Natural Hazards Insurance" by John Hillier
Rapid-scan acousto-optical delay line with 34 kHz scan rate and 15 attosecond precision
Creators: name: Schubert, Olaf
name: Eisele, Max
name: Crozatier, Vincent
name: Forget, Nicolas
name: Kaplan, Daniel
name: Huber, Rupert
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An optical fast-scan delay exploiting the near-collinear interaction between a train of ultrashort optical pulses and an acoustic wave propagating in a birefringent crystal is introduced. In combination with a femtosecond Er:fiber laser, the scheme is shown to delay few-fs pulses by up to 6 ps with a precision of 15 as. A resolution of 5 fs is obtained for a single sweep at a repetition rate of 34 kHz. This value can be improved to 39 as for multiple scans at a total rate of 0.3 kHz.
description: 4 pages, 4 figures $\copyright$ 2013 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. https://www.osapublishing.org/ol/fulltext.cfm?uri=ol-38-15-2907&id=259829
Lettre de Joseph (jésuite) Saurin à Jean-François Séguier, 1758-10-29
Creators: name: Saurin, Joseph (jésuite)
name: Joseph (Jésuite) Saurin
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Antiquités (général)

description: [transcription] Monsieur,

Je me suis acquitté de votre commission avec complaisance et ce m'est encore sensible un plaisir de pouvoir vous dire que j'ai remarqué sur le fronton de Notre-Dame-de-la-Vie deux rangs de trous peu différents de ceux que l'on voit sur le fronton de la Maison Carrée. Voilà de quoi fournir à vos savantes recherches: n'entreprenez rien cependant, sans consulter des yeux plus éclairés que les miens et en cas que vous tentiez quelque découverte, j'ose vous prier de m'en faire part: les progrès dans ce genre m'intéressent très fort, outre l'intérêt particulier que je prends à la gloire d'une personne que j'estime, que je respecte autant que vous et pour laquelle, permettre moi de le dire, je me suis toujours senti un véritable attachement: je souhaiterais qu'il se présentât une occasion de vous le témoigner par quelque service. Je vous réitère mes offres [fol. 4 v] là-dessus. Je serai toujours très flatté et très honoré de votre confiance.

Le Père Béraud m'a chargé de vous présenter bien des respects, il m'a dit qu'il vous écrirait un de ces jours. J'ai l'honneur d'être,

Monsieur,

Avec beaucoup de respect;

Votre très humble et très obéissant serviteur.

Saurin, jésuite.

A Lyon ce 29 octobre 1758

Béraud
description: [personnes citées] Laurent Béraud
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 148_1, fol. 4
Zinbiel algebras and bialgebras: main properties and related algebraic structures
Creators: name: Hounkonnou, Mahouton Norbert
name: Dassoundo, Mafoya Landry
Publisher: name: arXiv
Year: 2018
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: This work provides a characterization of left and right Zinbiel algebras.Basic identities are established and discussed, showing that Zinbiel algebras are center-symmetric, and therefore Lie-admissible algebras. Their bimodules are given, and used to build a Zinbiel algebra structure on the direct sum of the underlying vector space and a finite-dimensional vector space. In addition, their matched pair is built, and related to the matched pair of their sub-adjacent Lie algebras. Besides, Zinbiel coalgebras are introduced, and linked to their underlying Lie coalgebras and coassociative coalgebras. Moreover, the related Manin triple is defined, and used to characterize Zinbiel bialgebras, and their equivalence to the associated matched pair.
Ratios of Multijet Cross Sections in p-pbar Collisions at sqrt(s)=1.8 TeV
Creators: name: Abbott, B.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on a study of the ratio of inclusive three-jet to inclusive two-jet production cross sections as a function of total transverse energy in p-pbar collisions at a center-of-mass energy sqrt{s} = 1.8 TeV, using data collected with the D0 detector during the 1992-1993 run of the Fermilab Tevatron Collider. The measurements are used to deduce preferred renormalization scales in perturbative O(alpha_s^3) QCD calculations in modeling soft-jet emission.
description: submitted to PRL: 7 pages, 3 figures, 1 table
Chemical defense in a scyphomedusa
Creators: name: Graham, WM
name: Shanks, AL
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: The scyphozoan Stomolophus meleagris, when disturbed (held in a container), discharges a sticky mucus. Toxins released into the mucus and water kill some fish and crustaceans and can immediately alter fish behavior, but did not affect a crab predator of S. meleagris. The mucus contains discharged and undischarged nematocysts. The toxins in the mucus are probably associated with these nematocysts. In the field, S. meleagris subjected to a simulated small predator bite released clouds of nematocysts which drove off small fish (potential predators), but did not drive off the associated predacious crabs. These 2 behaviors appear to be forms of chemical defense. Two other species of scyphozoans and a ctenophore species also discharge mucus when disturbed. Chemical defenses may be common amongst gelatinous zooplankton.
Phase Transitions at Finite Temperature and Dimensional Reduction for Fermions and Bosons
Creators: name: Kocic, A.
name: Kogut, J. B.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In a recent Letter we discussed the fact that large-$N$ expansions and computer simulations indicate that the universality class of the finite temperature chiral symmetry restoration transition in the 3D Gross-Neveu model is mean field theory. This was seen to be a counterexample to the standard 'sigma model' scenario which predicts the 2D Ising model universality class. In this article we present more evidence, both theoretical and numerical, that this result is correct. We develop a physical picture for our results and discuss the width of the scaling region (Ginzburg criterion), $1/N$ corrections, and differences between the dynamics of BCS superconductors and Gross-Neveu models. Lattices as large as $12 \times 72^2$ are simulated for both the $N=12$ and $N=4$ cases and the numerical evidence for mean field scaling is quite compelling. We point out that the amplitude ratio for the model's susceptibility is a particulartly good observable for distinguishing between the dimensional reduction and the mean field scenerios, because this universal quantity differs by almost a factor of $20$ in the two cases. The simulations are done close to the critical point in both the symmetric and broken phases, and correlation lengths of order $10$ are measured. The critical indices $β_{mag}$ and $δ$ also pick out mean field behavior. We trace the breakdown of the standard scenario (dimensional reduction and universality) to the composite character of the mesons in the model. We point out that our results should be generic for theories with dynamical symmetry breaking, such as Quantum Chromodynamics. We also simulated the $O(2)$ model on $8 \times 16^3$ lattices to establish that our methods give the results of dimensional reduction in purely bosonic
description: 47 pages, latex, 23 figures in one uuencoded file
Unintended Effects of Emphasizing the Role of Climate Change in Recent Natural Disasters
Creators: name: Dixon, Graham
name: Bullock, Olivia
name: Adams, Dinah
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Neuroscience
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: In 2017, the United States experienced a series of natural hazards (hurricanes, wildfires, and blizzards) that resulted in significant loss of life and property. Emphasizing the role of climate change in these events might offer an important tool for engagement, particularly with skeptical audiences. However, in a survey experiment (N = 1504) involving three different natural hazards – hurricanes, wildfires, and blizzards – we find that emphasizing the role of climate change in these hazards produced unintended effects for climate change skeptics. In particular, skeptics experienced resistance to the news article, which associated with reduced perceived hazard severity. These backfiring effects likely serve as a defensive mechanism used by skeptics to maintain their prior views of climate change, illustrating the challenges faced in communicating climate change to skeptical audiences. These findings offer additional insight for those attempting to communicate climate-related risk information to skeptical audiences.
Temperature dependence of instantons in QCD
Creators: name: Chu, M. -C.
name: Ouellette, S. M.
name: Schramm, S.
name: Seki, R.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We investigate the temperature dependence of the instanton contents of gluon fields, using unquenched lattice QCD and the cooling method. The instanton size parameter deduced from the correlation function decreases from 0.44fm below the phase-transition temperature $T_c$ ($\approx 150$MeV) to 0.33fm at 1.3 $T_c$. The instanton charge distribution is Poissonian above $T_c$, but it deviates from the convoluted Poisson at low temperature. The topological susceptibility decreases rapidly below $T_c$, showing the apparent restoration of the $U(1)_A$ symmetry already at $T \approx T_c$.
description: 8 pages TEX, 3 Postscript figures available at http://www.krl.caltech.edu/preprints/MAP.html
Detecting selective digestion of meiobenthic prey by juvenile spot Leiostomus xanthurus (Pisces) using immunoassays
Creators: name: Feller, R. J.
name: Matthews, L. L.
name: Scholz, D. S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1991

description: Several past studies have shown that juvenile spot Leiostomus xanthurus feed selectively upon meiobenthic harpacticoid copepods. However, nematodes outnumber harpacticoids by nearly 4:1 in muddy sediments where juvenile spot feed by taking mouthfuls of the substrate. Therefore, we tested whether selective or rapid digestion of nematodes might account for the reported dominance of harpacticoid copepods in juvenile spot dietary studies. In separate feeding trials, starved spot (20 to 48 mm SL) were fed either nematodes or epibenthic copepods and then were serially sacrificed over a 5 to 8 h period. Antisera specific to each prey taxon were used to quantify the amounts of soluble prey antigens remaining in both foregut and hindgut of each fish. Using rocket immunoelectrophoresis (RIE), we detected nematode antigens for at least 5 h after ingestion, while antigens from copepods were detected for only 1.25 h. Visual inspection of gut contents, however, showed nearly opposite results. Nematodes were unrecognizable about 2 h after ingestion, while exoskeletons of copepods remained identifiable throughout their 8 h residence in the fish's gut. Because nematodes are digested rapidly, dietary profiles for juvenile spot may be biased towards hardbodied prey such as the exoskeletons of harpacticoid copepods. Thus the elapsed time between prey ingestion and spot collection can greatly influence dietary analyses. The importance of nematode prey for juvenile spot has probably been greatly underestimated.
The long-term evolution of star clusters formed with a centrally-peaked star-formation-efficiency profile
Creators: name: Shukirgaliyev, Bekdaulet
name: Parmentier, Genevieve
name: Just, Andreas
name: Berczik, Peter
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have studied the long-term evolution of star clusters of the solar neighborhood, starting from their birth in gaseous clumps until their complete dissolution in the Galactic tidal field. We have combined the "local-density-driven cluster formation model" of Parmentier & Pfalzner (2013) with direct N-body simulations of clusters following instantaneous gas expulsion. We have studied the relation between cluster dissolution time, $t_{dis}$, and cluster "initial" mass, $M_{init}$, defined as the cluster {mass at the end of the dynamical response to gas expulsion (i.e. violent relaxation), when the cluster age is 20-30 Myr}. We consider the "initial" mass to be consistent with other works which neglect violent relaxation. The model clusters formed with a high star formation efficiency (SFE -- i.e. gas mass fraction converted into stars) follow a tight mass-dependent relation, in agreement with previous theoretical studies. However, the low-SFE models present a large scatter in both the "initial" mass and the dissolution time, and a shallower mass-dependent relation than high-SFE clusters. Both groups differ in their structural properties on the average. Combining two populations of clusters, high- and low-SFE ones, with domination of the latter, yields a cluster dissolution time for the solar neighborhood in agreement with that inferred from observations, without any additional destructive processes such as giant molecular cloud encounters. An apparent mass-independent relation may emerge for our low-SFE clusters when we neglect low-mass clusters (as expected for extra-galactic observations), although more simulations are needed to investigate this aspect.
description: Acceped for publication in Astrophysical Journal (ApJ), 17 pages, 9 figures
Flavoparmelia subamplexa Hale
Creators: name: R, Jeanne dos
name: Silva, eis
name: Aptroot, André
name: E, Marcela
name: S, ugenia da
name: Cáceres, ilva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Lecanoromycetes
Lecanorales
Parmeliaceae
Flavoparmelia
Flavoparmelia subamplexa

description: Flavoparmelia subamplexa (Hale) Hale
PREVIOUS REPORT. — Mistry (1998).
description: Published as part of R, Jeanne dos, Silva, eis, Aptroot, André, E, Marcela, S, ugenia da & Cáceres, ilva, 2023, Lichens from dry central Brazil: a checklist of lichenized fungi from Distríto Federal and Goiás, pp. 117-133 in Cryptogamie, Mycologie 20 (9) on page 120, DOI: 10.5252/cryptogamie-mycologie2023v44a9, http://zenodo.org/record/8434271
title: Letter: William J. Nicoson to Leonard Gordon, September 1, 1972
Creators: name: Nicoson, William J.
Publisher: name: George Mason University
Year: 2006
Subjects: subject: New Communities Handbook

description: Letter and Handbook Excerpt: photocopied signature, 11" x 8.5" (29.7 cm x 21.6 cm), some pencil marks are evident
description: Letter from William Nicoson to Leonard Gordon, Director, Application Review Department, Office of New Communities Development, Department of Housing and Urban Development, September 1, 1972. The first installment of edited portions of the New Communities Handbook consists of a cover sheet, full table of contents, Chapter 1 (Program Purpose and Description), the first eight sections of Chapter 2 (Procedures for Guarantee and Interest Loan Assistance), and the first four sections of Chapter 3 (Project Criteria). These are the first 11 pages of a 144-page installment. Planned Community Archives Collection, 420.01.
The effect of limited attention and delay on negative arousing false memories
Creators: name: Knott, Lauren M.
name: Datin Shah
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Neuroscience
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Previous research has shown that, in comparison to neutral stimuli, false memories for high arousing negative stimuli are greater after very fast presentation and limited attention at study. However, full compared to limited attention conditions still produce comparably more false memories for all stimuli types. Research has also shown that emotional stimuli benefit from a period of consolidation. What effect would such consolidation have on false memory formation even when attention is limited at study? The aim of the present study was to investigate the effect of fast presentation on false memory production for negatively-arousing and neutral items over time using the DRM paradigm. Sixty-eight participants studied Negative and neutral DRM lists with fast or slow presentation conditions. Half completed a recognition test immediately and half completed a recognition test after one-week. Results revealed that, for fast presentation, negative critical lures increased after one week and were comparable to negative critical lures in the slow presentation encoding conditions. Neutral critical lures in the fast presentation condition did not change and remained lower compared to the slow presentation condition. These findings are the first demonstration that arousing negative false memories can increase over time when attention at encoding is limited.
Distribution, density, and sequestration of host chemical defenses by the specialist nudibranch Tritonia hamnerorum found at high densities on the sea fan Gorgonia ventalina
Creators: name: Cronin, G.
name: Lindquist, N.
name: Fenical, W.
name: Hay, M. E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: The dendronotid nudibranch Tritonia hamnerorum was observed on some reefs in the Florida Keys, USA, at very high densities during the summer of 1992. T. hamnerorum specializes on the sea fan Gorgonia ventalina and sequesters the furano-germacrene julieannafuran from its host; this compound effectively protects the nudibranch from consumption by the common predatory reef fish Thalassoma bifasciatum. T. hamnerorum densities were extremely high at some locations, with as many as 1700 nudibranchs found on a single G. ventalina colony. At high densities, nudibranch feeding killed large areas on some sea fan colonies by stripping all tissue from portions of the sea fan and allowing filamentous algae and other epibionts to colonize. The density of T. hamnerorum on G. ventalina varied greatly on scales of centimeters, meters and kilometers. High density patches of nudibranchs on individual sea fans were usually composed of equivalent-sized nudibranchs. These observations suggest that pelagic veligers have an incredible capability to find and settle synchronously on one portion of a sea fan or that the larvae or juveniles hatch from egg masses and develop without leaving the sea fan. This study adds to a growing number of marine examples suggesting that feeding specialization occurs primarily among small, sedentary consumers that deter or escape predators by associating with defended hosts.
Effects of storage and extraction procedures on yields of lipophilic metabolites from the brown seaweeds Dictyota ciliolata and D. menstrualis
Creators: name: Lindquist, N.
name: Hay, M. E.
name: Fenical, W.
name: Cronin, G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: Investigations focused on the ecological roles of marine secondary metabolites have become common, but marine ecologists have rarely assessed how methodologies used in sample preparation affect the extractability and stability of secondary metabolites and, thus, measurements of intraspecific and interspecific compound variance. We assessed various procedures for storing, drying, and extracting samples of 2 chemically defended brown seaweeds Dictyota ciliolata and D. menstrualis. These plants contain the diterpenoid alcohols pachydictyol A, dictyol B acetate, and dictyol E that are relatively stable under all test conditions. In contrast, the related diterpenoid dialdehyde, dictyodial, decomposed when plant tissues or crude extracts were stored at -25°C for 13 to 27 wk or when tissues or extracts were freeze-dried or subjected to high vacuum (<0.01 torr), methods that are commonly used in studies of marine chemical ecology. The stability of dictyodial was species-specific, degrading more in D. ciliolata than in D. menstrualis. During a few extractions, dictyodial reacted with methanol (MeOH) to yield an artifact resulting from the addition of 2 molecules of MeOH per molecule of dictyodial. A mixture of 2:1 dichloromethane (DCM) and MeOH tended to extract the lipophilic secondary metabolites better than MeOH or DCM alone. Metabolites were also afforded some protection against degradation when fresh tissue was submerged in 2:1 DCM:MeOH during storage at -25°C. Results of this investigation indicate that storage, extraction, and quantification methods need to be optimized for analyses of individual compounds and that even identical compounds can behave differently when they occur in different species.
(S)neutrino properties in R-parity violating supersymmetry: I. CP-conserving Phenomena
Creators: name: Grossman, Yuval
name: Haber, Howard E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: R-parity-violating supersymmetry (with a conserved baryon number B) provides a framework for particle physics with lepton number (L) violating interactions. We examine in detail the structure of the most general R-parity-violating (B-conserving) model of low-energy supersymmetry. We analyze the mixing of Higgs bosons with sleptons and the mixing of charginos and neutralinos with charged leptons and neutrinos, respectively. Implications for neutrino and sneutrino masses and mixing and CP-conserving sneutrino phenomena are considered. L-violating low-energy supersymmetry can be probed at future colliders by studying the phenomenology of sneutrinos. Sneutrino-antisneutrino mass splittings and lifetime differences can provide new opportunities to probe lepton number violation at colliders.
description: 28 pages, 5 figures (uses revtex and axodraw.sty). Revised version contains some improvements to Section III.B
Constraints on the emitting region of the gamma-rays observed in GW170817
Creators: name: Matsumoto, Tatsuya
name: Nakar, Ehud
name: Piran, Tsvi
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The gravitational waves from the neutron star merger event GW170817 were accompanied by an unusually weak short GRB 170817A, by an optical/IR macronova/kilonova and by a long lasting radio to X-rays counterpart. While association of short GRBs with mergers was predicted a long time ago, the luminosity of this prompt γ-ray emission was weaker by a few orders of magnitude than all known previous sGRBs and it was softer than typical sGRBs. This raise the question whether the γ-rays that we have seen were a regular sGRB viewed off-axis. We revisit this question following recent refined analyses of the γ-ray signal and the VLBI observations that revealed the angular structure of the relativistic outflow: observing angle of $\sim\,20^\circ$, a narrow jet with core $\lesssim5^\circ$ and $E_{\rm iso}>10^{52}\,{\rm ergs}$. We show here that: (i) The region emitting the observed $γ$-rays must have been moving with a Lorentz factor $Γ\gtrsim5$; (ii) The observed γ-rays were not "off-axis" emission (viewing angle $>1/Γ$) emerging from the core of the jet, where a regular sGRB was most likely produced; (iii) The $γ$-ray emission region was either "on-axis" (at an angle $<1/Γ$) or if it was "off-axis" then the observing angle must have been small ($<5^\circ$) and the on-axis emission from this region was too faint and too hard to resemble a regular sGRB.
description: 7 pages, 4 figures, submitted to MNRAS, comments welcome!!!