cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the possibility of a helium white dwarf donor in the presumed ultracompact binary 2S 0918-549
Creators: name: Zand, J. J. M. in 't
name: Cumming, A.
name: van der Sluys, M. V.
name: Verbunt, F.
name: Pols, O. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: 2S 0918-549 is a low-mass X-ray binary (LMXB) with a low optical to X-ray flux ratio. Probably it is an ultracompact binary with an orbital period shorter than 60 min. Such binaries cannot harbor hydrogen rich donor stars. As with other (sometimes confirmed) ultracompact LMXBs, 2S 0918-549 is observed to have a high neon-to-oxygen abundance ratio (Juett et al. 2001) which has been used to argue that the companion star is a CO or ONe white dwarf. However, type-I X-ray bursts have been observed from several of these systems implying the presence of hydrogen or helium on the neutron star surface. In this paper, we argue that the companion star in 2S 0918-549 is a helium white dwarf We first present a Type I X-ray burst from 2S 0918-549 with a long duration of 40 minutes. We show that this burst is naturally explained by accretion of pure helium at the inferred accretion rate of ~0.01 times the Eddington accretion rate. At higher accretion rates of ~0.1 Eddington, hydrogen is required to explain long duration bursts. However, at low rates the long duration is due to the large amount of helium that accumulates prior to the burst. We show that it is possible to form a helium white dwarf donor in an ultracompact binary if accretion starts during the first ascent of the giant branch, when the core is made of predominantly helium. Furthermore, this scenario naturally explains the high neon-to-oxgen ratio, without requiring a CO or ONe white dwarf companion. The only observational aspect of 2S 0918-549 that we cannot explain is the absence of helium lines in the optical spectrum. Model calculations of optical accretion disk spectra need to be carried out in order to obtain limits on the helium abundance.
description: accepted by A&A, 11 pages, 10 figures
Effects and limitations of a nucleobase-driven backmapping procedure for nucleic acids using steered Molecular Dynamics
Creators: name: Poblete, Simón
name: Bottaro, Sandro
name: Bussi, Giovanni
Publisher: name: arXiv
Year: 2017
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Computational Physics (physics.comp-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Coarse-grained models can be of great help to address the problem of structure prediction in nucleic acids. On one hand they can make the prediction more efficient, while on the other hand, they can also help to identify the essential degrees of freedom and interactions for the description of a number of structures. With the aim to provide an all-atom representation in an explicit solvent to the predictions of our SPlit and conQueR (SPQR) coarse-grained model of RNA, we recently introduced a backmapping procedure which enforces the predicted structure into an atomistic one by means of steered Molecular Dynamics. These simulations minimize the ERMSD, a particular metric which deals exclusively with the relative arrangement of nucleobases, between the atomistic representation and the target structure. In this paper, we explore the effects of this approach on the resulting interaction networks and backbone conformations by applying it on a set of fragments using as a target their native structure. We find that the geometry of the target structures can be reliably recovered, with limitations in the regions with unpaired bases such as bulges. In addition, we observe that the folding pathway can also change depending on the parameters used in the definition of the ERMSD and the use of other metrics such as the RMSD.
description: Submitted
МЕТОДЫ КОНТРОЛЯ ПЕЧАТНЫХ ПЛАТ
Creators: name: Складнова Мария Сергеевна
Publisher: name: Colloquium-journal
Year: 2019
Subjects: Контроль качества
печатные платы
информационно-измерительные системы
оптический контроль
рентгеновский контроль
тепловой контроль
электрофи-зический контроль
электрический контроль
радиотехнический контроль

description: Описаны существующие методы обнаружения дефектов печатных плат. Предпочтение отдается оптическому виду контроля печатных плат. При реализации данного метода можно не только обна-ружить дефекты печатных плат, но и выявить закономерность для принятия действий по повышению качества плат
Breaking out of the traditional lecture hall: Geocaching as a tool for experiential learning in large geology service courses
Creators: name: Lazar, Kelly B.
name: Moysey, Stephen M.
name: Brame, Scott
name: Coulson, Alan B.
name: Lee, Cindy M.
name: Wagner, John R.
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: It is uncommon for large service courses in geology to provide engaging outdoor activities that effectively mimic the experiences of working geologists, despite the fact that field experiences are a well-established pathway for recruiting students to the geosciences. We address this problem by creating extra credit activities that are integrated and implemented within a geocaching framework to provide students with these outdoor, extracurricular learning experiences. Three extra credit implementation strategies were devised for each of three geology service courses. Students from two small and one large geology course independently completed geology lessons at each geocaching site via a Google Forms platform. Across 757 activities completed during the Fall 2016 semester, more than two-thirds of evaluations reported that the student enjoyed the activity and learned something, and almost half of evaluations indicated the student wanted to learn more about the topic. Participation rates were highest in students who were high achievers, women, and freshmen and sophomores, but did not vary much with respect to ethnicity, major, or traditional/contemporary student status. Designing a successful implementation strategy at other institutions is likely dependent on course goals and class size.
Social and Financial Incentives for Overcoming a Collective Action Problem
Creators: name: Bakhtiar, M. Mehrab
name: Guiteras, Raymond P.
name: Levinsohn, James
Publisher: name: Unknown
Year: 2022
Subjects: Consumer/Household Economics

description: Addressing public health externalities often requires community-level collective action. Due to social norms, each person’s sanitation investment decisions may depend on the decisions of neighbors. We report on a cluster randomized controlled trial conducted with 19,000 households in rural Bangladesh where we grouped neighboring households and introduced (either financial or social recognition) rewards with a joint liability component for the group, or asked each group member to make a private or public pledge to maintain a hygienic latrine. The group financial reward has the strongest impact in the short term (3 months), inducing a 7.5-12.5 percentage point increase in hygienic latrine ownership, but this effect dissipates in the medium term (15 months). In contrast, the public commitment induced a 4.2-6.3 percentage point increase in hygienic latrine ownership in the short term, but this effect persists in the medium term. Non-financial social recognition or a private pledge has no detectable effect on sanitation investments.
On the Triviality of Textbook Quantum Electrodynamics
Creators: name: Kim, S.
name: Kogut, J. B.
name: Lombardo, M. -P.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By adding a small, irrelevant four fermi interaction to the action of lattice Quantum Electrodynamics (QED), the theory can be simulated with massless quarks in a vacuum free of lattice monopoles. This allows an ab initio high precision, controlled study of the existence of "textbook" Quantum Electrodynamics with several species of fermions. The lattice theory possesses a second order chiral phase transition which we show is logarithmically trivial. The logarithms of triviality, which modify mean field scaling laws, are pinpointed in several observables. The result supports Landau's contention that perturbative QED suffers from complete screening and would have a vanishing fine structure constant in the absence of a cutoff.
description: reference to Phys. Rev. Lett.80, 4119(1998) added
ВИДЕОИЗМЕРИТЕЛЬНАЯ МАШИНА С ЧПУ MITUTOYO QUICK VISION ACTIVE
Creators: name: Складнова Мария Сергеевна
Publisher: name: Colloquium-journal
Year: 2019
Subjects: Видеоизмерение
Mitutoyo
Quick vision Active
контроль качества
бесконтактное измерение
оптический контроль
координатно-измерительные машины.

description: Современная промышленность быстро развивается и поэтому оборудование используемое на про-изводстве должно соответствовать всем необходимым требованиям с применением последних техно-логий. Одним из необходимых видов оборудования на производстве является видеоизмерительные ма-шины для контроля качества деталей и материалов во всех высокоточных 2D ,2½D и 3D измерениях. Компоненты таких машин должны быть созданы с применением последних технологий CAD для обес-печения максимальной производительности и изготавливаться из материалов для гарантированной длительной работы. В данной работе рассмотрена видеоизмерительная машина фирмы Mitutoyo для контроля качества изготовления оснасти и трафаретов.
title: 01_0162
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
On the physical Hilbert space of QCD$_2$ in the decoupled formulation
Creators: name: Cabra, D. C.
name: Rothe, K. D.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the QCD$_2$ partition function in the non-local, decoupled formulation and systematically establish which subset of the nilpotent Noether charges is required to vanish on the physical states. The implications for the Hilbert space structure are also examined.
description: 15 pages, plain LaTeX file
Additional file 1 of Study on the isoprene-producing co-culture system of Synechococcus elongates–Escherichia coli through omics analysis
Creators: name: Liu, Hui
name: Cao, Yujin
name: Guo, Jing
name: Xu, Xin
name: Long, Qi
name: Song, Lili
name: Xian, Mo
Publisher: name: figshare
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. Functional analysis of differential transcriptome and proteome in pairs of EC1 vs. E1. The GO enrichment analysis was carried out for the differentially expressed proteins (genes) in proteome and transcriptome (red represents up-regulation and blue represents down-regulation). Figure S2. Functional analysis of differential transcriptome and proteome in pairs of EC2 vs. EC1. The GO enrichment analysis was carried out for the differentially expressed proteins (genes) in proteome and transcriptome (red represents up-regulation and blue represents down-regulation). Figure S3. Functional analysis of differential transcriptome and proteome in pairs of EC3 vs. EC2. The GO enrichment analysis was carried out for the differentially expressed proteins (genes) in proteome and transcriptome (red represents up-regulation and blue represents down-regulation).
Supertranslations and Holography near the Horizon of Schwarzschild Black Holes
Creators: name: Lust, Dieter
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we review and discuss several aspects of supertranslations and their associated algebras at the horizon of a Schwarzschild black hole. We will compare two different approaches on horizon supertranslations, which were recently considered in separate publications. Furthermore we describe a possible holographic description of a Schwarzschild black hole in terms of a large N boundary theory, which accommodates the Goldstone bosons of the horizon supertranslations.
description: 21 pages, replaced version contains some new references and corrected typos
СОВЕРШЕНСТВОВАНИЕ СТОМАТОЛОГИЧЕСКИХ ФРЕЗЕРНЫХ СТАНКОВ, ПРИМЕНЯЕМЫХ ПРИ ИЗГОТОВЛЕНИИ КОМБИНИРОВАННЫХ ПРОТЕЗОВ
Creators: name: Линченко И. В.
Publisher: name: Colloquium-journal
Year: 2019
Subjects: комбинированные зубные протезы
фрезерование
фрезерные устройства

description: Комбинированные зубные протезы представляют собой различные несъемные и съемные протезы, используемые для лечения больных с дефектами зубных рядов. Их применение помогает решить целый ряд сложных задач, направленных как на восстановление утраченных функций зубо челюстной систе-мы, так и на профилактику ее дальнейших нарушений. Однако изготовление этих конструкций требует последовательного применения целого ряда современных технологий, а также специальной аппаратуры, и, в первую очередь, параллелометров и фрезерных устройств. С помощью параллелометров обеспечи-вается проектирование протезов и установка фиксирующих систем, а с помощью фрезерных устройств – их фрезерование на этапах изготовления. Совершенствование моделей стоматологических фрезерных станков создает эргономичные для работы условия и позволяет качественно решать по-ставленные задачи.
A search for HI in some peculiar faint dwarf galaxies
Creators: name: Begum, Ayesha
name: Chengalur, Jayaram N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a deep Giant Metrewave Radio Telescope (GMRT) search for HI 21 cm emission from three dwarf galaxies, viz. POX 186, SC 24 and KKR 25. Based, in part, on previous single dish HI observations, these galaxies have been classified as a BCD, a dwarf irregular and a transition galaxy respectively. However, in conflict with previous single dish detections, we do not detect HI in SC 24 or KKR 25. We suggest that the previous single dish measurements were probably confused with the local galactic emission. In the case of POX 186, we confirm the previous non detection of HI but with substantially improved limits on its HI mass. Our derived upper limits on the HI mass of SC 24 and KKR 25 are similar to the typical HI mass limit for dwarf spheroidal galaxies, whereas in the case of POX 186, we find that its gas content is somewhat smaller than is typical of BCD galaxies.
description: Accepted for publication in MNRAS
A comparison of Einstein-Boltzmann solvers for testing General Relativity
Creators: name: Bellini, E.
name: Barreira, A.
name: Frusciante, N.
name: Hu, B.
name: Peirone, S.
name: Raveri, M.
name: Zumalacárregui, M.
name: Avilez-Lopez, A.
name: Ballardini, M.
name: Battye, R. A.
name: Bolliet, B.
name: Calabrese, E.
name: Dirian, Y.
name: Ferreira, P. G.
name: Finelli, F.
name: Huang, Z.
name: Ivanov, M. M.
name: Lesgourgues, J.
name: Li, B.
name: Lima, N. A.
name: Pace, F.
name: Paoletti, D.
name: Sawicki, I.
name: Silvestri, A.
name: Skordis, C.
name: Umiltà, C.
name: Vernizzi, F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We compare Einstein-Boltzmann solvers that include modifications to General Relativity and find that, for a wide range of models and parameters, they agree to a high level of precision. We look at three general purpose codes that primarily model general scalar-tensor theories, three codes that model Jordan-Brans-Dicke (JBD) gravity, a code that models f(R) gravity, a code that models covariant Galileons, a code that models Hořava-Lifschitz gravity and two codes that model non-local models of gravity. Comparing predictions of the angular power spectrum of the cosmic microwave background and the power spectrum of dark matter for a suite of different models, we find agreement at the sub-percent level. This means that this suite of Einstein-Boltzmann solvers is now sufficiently accurate for precision constraints on cosmological and gravitational parameters.
description: 23 pages; 11 figures. Matches version accepted in PRD
Simulating Simplified Versions of the IKKT Matrix Model
Creators: name: Ambjorn, J.
name: Anagnostopoulos, K. N.
name: Bietenholz, W.
name: Hotta, T.
name: Nishimura, J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We simulate a supersymmetric matrix model obtained from dimensional reduction of 4d SU(N) super Yang-Mills theory (a 4d counter part of the IKKT model or IIB matrix model). The eigenvalue distribution determines the space structure. The measurement of Wilson loop correlators reveals a universal large N scaling. Eguchi-Kawai equivalence may hold in a finite range of scale, which is also true for the bosonic case. We finally report on simulations of a low energy approximation of the 10d IKKT model, where we omit the phase of the Pfaffian and look for evidence for a spontaneous Lorentz symmetry breaking.
description: 4 pages, talk presented at LATTICE 2000 (Bangalore)
ФОРМИРОВАНИЕ РАСЧЕТА ЗАПАСАЕМОЙ ЭНЕРГИИ ПАССИВНЫМ ЭКЗОСКЕЛЕТОМ НИЖНИХ КОНЕЧНОСТЕЙ ЧЕЛОВЕКА
Creators: name: Ревняков Е. Н.
name: Пикалов М. И.
Publisher: name: Colloquium-journal
Year: 2019
Subjects: экзоскелет
ходьба
приседания
динамика
запасание энергии.

description: В статье показан один из возможных алгоритмов запасания энергии движений человека на основе ис-пользования пассивного экзоскелета нижних конечностей человека, который в свою очередь основан на запасании потенциальной энергии. Исходными данными являются кинематические характеристики ис-пытуемых (угловые положения, скорости, ускорения), массо-иннерционные характеристики. Результа-тами исследований стали управляющие моменты, создаваемые мышцами при ходьбе и приседаниях. Также была предложена конструкция тестового экзоскелета для проверки предложенных вариантов накопления механической энергии, а также выведена функция запасания потенциальной энергии.
Electronic supplementary material from Resolving the phylogenetic position of Darwin's extinct ground sloth (Mylodon darwinii) using mitogenomic and nuclear exon data
Creators: name: Delsuc, Frédéric
name: Kuch, Melanie
name: Gibb, Gillian C.
name: Hughes, Jonathan
name: Szpak, Paul
name: Southon, John
name: Enk, Jacob
name: Duggan, Ana T.
name: Poinar, Hendrik N.
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 40308 Palaeontology (incl. Palynology)
subject: FOS: Earth and related environmental sciences
subject: 60408 Genomics

description: Supplementary Tables (4) and Figures (12)
The Architecture of the GW Ori Young Triple Star System and Its Disk: Dynamical Masses, Mutual Inclinations, and Recurrent Eclipses
Creators: name: Czekala, Ian
name: Andrews, Sean M.
name: Torres, Guillermo
name: Rodriguez, Joseph E.
name: Jensen, Eric L. N.
name: Stassun, Keivan G.
name: Latham, David W.
name: Wilner, David J.
name: Gully-Santiago, Michael A.
name: Grankin, Konstantin N.
name: Lund, Michael B.
name: Kuhn, Rudolf B.
name: Stevens, Daniel J.
name: Siverd, Robert J.
name: James, David
name: Gaudi, B. Scott
name: Shappee, Benjamin J.
name: Holoien, Thomas W. -S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present spatially and spectrally resolved Atacama Large Millimeter/submillimeter Array (ALMA) observations of gas and dust orbiting the pre-main sequence hierarchical triple star system GW Ori. A forward-modeling of the ${}^{13}$CO and C${}^{18}$O $J$=2-1 transitions permits a measurement of the total stellar mass in this system, $5.29 \pm 0.09\,M_\odot$, and the circum-triple disk inclination, $137.6 \pm 2.0^\circ$. Optical spectra spanning a 35 year period were used to derive new radial velocities and, coupled with a spectroscopic disentangling technique, revealed that the A and B components of GW Ori form a double-lined spectroscopic binary with a $241.50\pm0.05$ day period; a tertiary companion orbits that inner pair with a $4218\pm50$ day period. Combining the results from the ALMA data and the optical spectra with three epochs of astrometry in the literature, we constrain the individual stellar masses in the system ($M_\mathrm{A} \approx 2.7\,M_\odot$, $M_\mathrm{B} \approx 1.7\,M_\odot$, $M_\mathrm{C} \approx 0.9\,M_\odot$) and find strong evidence that at least one (and likely both) stellar orbital planes are misaligned with the disk plane by as much as $45^\circ$. A $V$-band light curve spanning 30 years reveals several new $\sim$30 day eclipse events 0.1-0.7~mag in depth and a 0.2 mag sinusoidal oscillation that is clearly phased with the AB-C orbital period. Taken together, these features suggest that the A-B pair may be partially obscured by material in the inner disk as the pair approaches apoastron in the hierarchical orbit. Lastly, we conclude that stellar evolutionary models are consistent with our measurements of the masses and basic photospheric properties if the GW Ori system is $\sim$1 Myr old.
description: 26 pages, 15 figures, accepted to ApJ
ЭКСПЕРИМЕНТАЛЬНОЕ ИССЛЕДОВАНИЕ ПАРАМЕТРОВ ХОДЬБЫ И ПРИСЕДАНИЙ В ЗАВИСИМОСТИ ОТ ПАРАМЕТРОВ ЗВЕНЬЕВ НИЖНИХ КОНЕЧНОСТЕЙ
Creators: name: Ревняков Е. Н.
name: Пикалов М. И.
Publisher: name: Colloquium-journal
Year: 2019
Subjects: экзоскелет
ходьба
приседания
кинематика.

description: This scientific and technological progress is aimed at partial or complete exclusion of a person from the production process. However, to this day there are professions in which the exclusion of a person at the moment is impossible. Extreme physical loads experienced by workers, installers, builders, lead to a large number of industrial injuries. Therefore, at the moment, more than ever, there is an acute increase in the physical indica-tors of a person. One of the ways of realization is exoskeletons. This article will show an example of studying the kinematics of walking and human squats based on the obtained experimental data.
Incorporating Allelopathic Aquatic Macrophytes for Algal Control in Carroll Creek Linear Park in Frederick, Maryland
Creators: name: Rubis, Charles Alexander
Publisher: name: Maryland Shared Open Access Repository
Year: 2017

description: Algal growth in Carroll Creek is an annual problem. A group in Frederick, Maryland, Color on the Creek, installs aquatic macrophytes, including water lilies, each year in an effort to partially inhibit algal growth by blocking sunlight at the water's surface. This group does not, however, consider plants with possible allelopathic tendencies towards algae. This research collected algae directly from Carroll Creek, as well as Microcystis aeruginosa LE-3 cultured in the laboratory, and exposed them to exudates of aquatic macrophytes with known allelopathic tendencies. The macrophytes were Pistia stratiotes, (Water lettuce) Eichhornia crassipes (Water hyacinth) and Saururus cernuus L (Lizard's tail). The algae in Carroll Creek was tested for its maximum quantum yield, or photosynthetic ability, and the M aeruginosa was tested for growth inhibition, as measured by average cell density. The results of the experiments showed the exudate from water lettuce had a statistically significant (P≤0.05) allelopathic effect on the Carroll Creek algae on the last day of testing (n=6, P=0.0084). Throughout the nine days of experimentation, the maximum quantum yield during exposure to water hyacinth exudate was significantly lower (P<0.05) than the yield response of the excelsior-only control (n=9, P=0.026). None of the macrophytes had a statistically significant effect on M. aeruginosa average cell density. Further research should be done using different periods of exudate collection, as well as different concentrations of exudate, before the allelopathic effects of these macrophytes can be discounted.
Recursion Rules for Scattering Amplitudes in Non-Abelian Gauge Theories
Creators: name: Kim, Chanju
name: Nair, V. P.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a functional derivation of recursion rules for scattering amplitudes in a non-Abelian gauge theory in a form valid to arbitrary loop order. The tree-level and one-loop recursion rules are explicitly displayed.
description: 18 pages, RevTeX, 2 postscript figures, a reference added, minor typographical errors corrected
Dispersion spreading of biphotons in optical fibres and two-photon interference
Creators: name: Brida, G.
name: Chekhova, M. V.
name: Genovese, M.
name: Gramegna, M.
name: Krivitsky, L. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present the first observation of two-photon polarization interference structure in the second-order Glauber's correlation function of two-photon light generated via type-II spontaneous parametric down-conversion. In order to obtain this result, two-photon light is transmitted through an optical fibre and the coincidence distribution is analyzed by means of the START-STOP method. Beyond the experimental demonstration of an interesting effect in quantum optics, these results also have considerable relevance for quantum communications.
description: Accepted for publication in Phys.Rev.Lett
Quantum chaos for nonstandard symmetry classes in the Feingold-Peres model of coupled tops
Creators: name: Fan, Yiyun
name: Gnutzmann, Sven
name: Liang, Yuqi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We consider two coupled quantum tops with angular momentum vectors $\mathbf{L}$ and $\mathbf{M}$. The coupling Hamiltonian defines the Feinberg-Peres model which is a known paradigm of quantum chaos. We show that this model has a nonstandard symmetry with respect to the Altland-Zirnbauer tenfold symmetry classification of quantum systems which extends the well-known threefold way of Wigner and Dyson (referred to as `standard' symmetry classes here). We identify that the nonstandard symmetry classes BD$I_0$ (chiral orthogonal class with no zero modes), BD$I_1$ (chiral orthogonal class with one zero mode) and C$I$ (antichiral orthogonal class) as well as the standard symmetry class A$I$ (orthogonal class). We numerically analyze the specific spectral quantum signatures of chaos related to the nonstandard symmetries. In the microscopic density of states and in the distribution of the lowest positive energy eigenvalue we show that the Feinberg-Peres model follows the predictions of the Gaussian ensembles of random-matrix theory in the appropriate symmetry class if the corresponding classical dynamics is chaotic. In a crossover to mixed and near-integrable classical dynamics we show that these signatures disappear or strongly change.
description: 15 pages
Additional file 1 of The influences of perfluoroalkyl substances on the rheumatoid arthritis clinic
Creators: name: Zhao, Yun
name: Jin, Hangbiao
name: Qu, Jianli
name: Zhang, Sunzhao
name: Hu, Shilei
name: Xue, Jing
name: Zhao, Meirong
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology

description: Additional file 1. Supplementary materials.
Growth and structural characterization of large superconducting crystals of La$_{2-x}$Ca$_{1+x}$Cu$_2$O$_{6}$
Creators: name: Schneeloch, J. A.
name: Guguchia, Z.
name: Stone, M. B.
name: Tian, Wei
name: Zhong, Ruidan
name: Mohanty, K. M.
name: Xu, Guangyong
name: Gu, G. D.
name: Tranquada, J. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Large crystals of La$_{2-x}$Ca$_{1+x}$Cu$_2$O$_{6}$ (La-Ca-2126) with $x=0.10$ and 0.15 have been grown and converted to bulk superconductors by high-pressure oxygen annealing. The superconducting transition temperature, $T_c$, is as high as 55~K; this can be raised to 60~K by post-annealing in air. Here we present structural and magnetic characterizations of these crystals using neutron scattering and muon spin rotation techniques. While the as-grown, non-superconducting crystals are single phase, we find that the superconducting crystals contain 3 phases forming coherent domains stacked along the $c$ axis: the dominant La-Ca-2126 phase, very thin (1.5 unit-cell) intergrowths of La$_2$CuO$_4$, and an antiferromagnetic La$_8$Cu$_8$O$_{20}$ phase. We propose that the formation and segregation of the latter phases increases the Ca concentration of the La-Ca-2126, thus providing the hole-doping that supports superconductivity.
description: 9 pages, 8 figures, version accepted in PRMaterials
title: 02_0505
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Current-induced spin orientation in semiconductors and low-dimensional structures
Creators: name: Averkiev, N. S.
name: Kokurin, I. A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present here a brief overview of current-induced spin polarization in bulk semiconductors and semiconductor structures of various dimension. The role of band structure and spin relaxation processes is discussed. The related phenomena, such as spin Hall effect, inverse spin Hall effect and other are discussed. Our recent results in this field are presented as well.
description: 4 pages, 3 figures
THE ROLE OF IN VITRO COMBINATION EFFICACY EVALUATION TO PRIORITIZE ANTI-HIV COMPOUNDS FOR CLINICAL TRIALS
Creators: name: Russell, Julie D.
Publisher: name: Maryland Shared Open Access Repository
Year: 1999

description: The major goal of this thesis project was to determine the role of in vitro combination efficacy to help prioritize compounds for clinical trials. So many compounds are available and currently in development that some method is needed to establish priority for compound use. The results of this study indicate that a potentially useful tool for prioritizing compounds for clinical trials has been developed using an in vitro combination assay technique.
Estimating the maximum possible earthquake magnitude using extreme value methodology: the Groningen case
Creators: name: Beirlant, Jan
name: Kijko, Andrzej
name: Reynkens, Tom
name: Einmahl, John H. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Applications (stat.AP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: 62G32

description: The area-characteristic, maximum possible earthquake magnitude $T_M$ is required by the earthquake engineering community, disaster management agencies and the insurance industry. The Gutenberg-Richter law predicts that earthquake magnitudes $M$ follow a truncated exponential distribution. In the geophysical literature several estimation procedures were proposed, see for instance Kijko and Singh (Acta Geophys., 2011) and the references therein. Estimation of $T_M$ is of course an extreme value problem to which the classical methods for endpoint estimation could be applied. We argue that recent methods on truncated tails at high levels (Beirlant et al., Extremes, 2016; Electron. J. Stat., 2017) constitute a more appropriate setting for this estimation problem. We present upper confidence bounds to quantify uncertainty of the point estimates. We also compare methods from the extreme value and geophysical literature through simulations. Finally, the different methods are applied to the magnitude data for the earthquakes induced by gas extraction in the Groningen province of the Netherlands.
Holomorphic Anomalies and the Nonrenormalization Theorem
Creators: name: Poppitz, Erich
name: Randall, Lisa
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It has been argued that the superpotential can be renormalized in the presence of massless particles. Possible implications which have been considered include the restoration of supersymmetry at higher loops or a shift to a supersymmetric vacuum state. We argue that even in the presence of massless particles, there are no new contributions to the superpotential at any order in perturbation theory. This confirms the utility of the Wilsonian superpotential for analyzing the moduli space of the low energy theory.
description: 9 pages, LaTeX, 1 .ps figure, psfig.sty included
Supplementary tables with parameter estimates for models from Does the winner–loser effect determine male mating success?
Creators: name: Harrison, Lauren M.
name: Jennions, Michael D.
name: Head, Megan L.
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Parameter estimates for models excluding or including male or female size
Statistics of Voids in the 2dF Galaxy Redshift Survey
Creators: name: Patiri, Santiago G.
name: Betancort-Rijo, Juan
name: Prada, Francisco
name: Klypin, Anatoly
name: Gottlöber, Stefan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a statistical analysis of voids in the 2dF galaxy redshift survey (2dFGRS). In order to detect the voids, we have developed two robust algorithms. We define voids as non-overlapping maximal spheres empty of halos or galaxies with mass or luminosity above a given one. We search for voids in cosmological $N$-Body simulations to test the performance of our void finders. We obtain and analyze the void statistics for several volume-limited samples for the North Galactic Strip (NGP) and the South Galactic Strip (SGP) constructed from the 2dFGRS full data release. We find that the results obtained from the NGP and the SGP are statistically compatible. From the results of several statistical tests we conclude that voids are essentially uncorrelated, with at most a mild anticorrelation and that there is a dependence of the void number density on redshift at least at the 99.5% confidence level. We develop a technique to correct the distortion caused by the fact that we use the redshift as the radial coordinate. We calibrate this technique with mock catalogues and find that the correction might be of some relevance to carry out accurate inferences from void statistics. We study the statistics of the galaxies inside nine nearby voids. We find that galaxies in voids are not randomly distributed: they form structures like filaments. We also obtain the galaxy number density profile in voids. This profile follow a similar but steeper trend to that follow by halos in voids.
description: 16 pages, 10 figures, replaced to match the published version in MNRAS
Homoclinic snaking in the discrete Swift-Hohenberg equation
Creators: name: Kusdiantara, Rudy
name: Susanto, Hadi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We consider the discrete Swift-Hohenberg equation with cubic and quintic nonlinearity, obtained from discretizing the spatial derivatives of the Swift-Hohenberg equation using central finite differences. We investigate the discretization effect on the bifurcation behavior, where we identify three regions of the coupling parameter, i.e., strong, weak, and intermediate coupling. Within the regions, the discrete Swift-Hohenberg equation behaves either similarly or differently from the continuum limit. In the intermediate coupling region, multiple Maxwell points can occur for the periodic solutions and may cause irregular snaking and isolas. Numerical continuation is used to obtain and analyze localised and periodic solutions for each case. Theoretical analysis for the snaking and stability of the corresponding solutions is provided in the weak coupling region.
Quantum to classical transitions in causal relations
Creators: name: Ried, Katja
name: MacLean, Jean-Philippe W.
name: Spekkens, Robert W.
name: Resch, Kevin J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The landscape of causal relations that can hold among a set of systems in quantum theory is richer than in classical physics. In particular, a pair of time-ordered systems can be related as cause and effect or as the effects of a common cause, and each of these causal mechanisms can be coherent or not. Furthermore, one can combine these mechanisms in different ways: by probabilistically realizing either one or the other or by having both act simultaneously (termed a physical mixture). In the latter case, it is possible for the two mechanisms to be combined quantum-coherently. Previous work has shown how to experimentally realize one example of each class of possible causal relations. Here, we make a theoretical and experimental study of the transitions between these classes. In particular, for each of the two distinct types of coherence that can exist in mixtures of common-cause and cause-effect relations--coherence in the individual causal pathways and coherence in the way the causal relations are combined--we determine how it degrades under noise and we confirm these expectations in a quantum-optical experiment.
description: 9 pages, 6 figures
Detonation propagation in annular arcs of condensed phase explosives
Creators: name: Ioannou, Eleftherios
name: Schoch, Stefan
name: Nikiforakis, Nikolaos
name: Michael, Louisa
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present a numerical study of detonation propagation in unconfined explosive charges shaped as an annular arc (rib). Steady detonation in a straight charge propagates at constant speed but when it enters an annular section, it goes through a transition phase and eventually reaches a new steady state of constant angular velocity. This study examines the speed of the detonation wave along the annular charge during the transition phase and at steady state, as well as its dependence on the dimensions of the annulus. The system is modeled using a recently proposed diffuse-interface formulation which allows for the representation of a two-phase explosive and of an additional inert material. The explosive considered is the polymer-bonded TATB-based LX-17 and is modeled using two JWL equations of state and the Ignition and Growth reaction rate law. Results show that steady state speeds are in good agreement with experiment. In the transition phase, the evolution of outer detonation speed deviates from the exponential bounded growth function suggested by previous studies. We propose a new description of the transition phase which consists of two regimes. The first is caused by local effects at the outer edge of the annulus and leads to a dependence of outer detonation speed on angular position along the arc. The second regime is induced by effects originating from the inner edge of the annular charge and leads to the deceleration of the outer detonation until steady state is reached. The study concludes with a parametric study where the dependence of the steady state and the transition phase on the dimensions of the annulus is investigated.
Hemoglobin Video Imaging Provides Novel In Vivo High-Resolution Imaging and Quantification of Human Aqueous Outflow in Patients with Glaucoma.
Creators: name: Khatib, Tasneem Z
name: Meyer, Paul A R
name: Lusthaus, Jed
name: Manyakin, Ilya
name: Mushtaq, Yusuf
name: Martin, Keith R
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Csa, Cross-sectional Area
Iop, Intraocular Pressure
Hvi, Hemoglobin Video Imaging
Md, Mean Deviation
Migs, Minimally Invasive Glaucoma Surgery
Slt, Selective Laser Trabeculoplasty

description: Purpose:Noninvasive, detailed measurement of the dynamics of human aqueous outflow is difficult to achieve with currently available clinical tools. We used hemoglobin video imaging (HVI) to develop a technique to image and quantify human aqueous outflow noninvasively and in real time. Design:A prospective observational study to describe characteristics of aqueous veins and a pilot prospective interventional feasibility study to develop quantification parameters. Participants:Patients were recruited from the Cambridge University Hospitals NHS Foundation Trust Glaucoma clinic. The observational study included 30 eyes, and the pilot interventional feasibility study was performed on 8 eyes undergoing selective laser trabeculoplasty (SLT). Our SLT protocol also included the installation of pilocarpine and apraclonidine eye drops. Methods:Participants underwent HVI alongside their usual clinic visit. Main Outcome Measures:The change in cross-sectional area (CSA) of the aqueous column within episcleral veins was correlated with intraocular pressure (IOP) reduction and change in visual field mean deviation (MD) before and after intervention. Fluctuations in contrast and pixel intensity of red blood cells in an aqueous vein were calculated to compare the flow rate before and after intervention using autocorrelation analysis. Results:Hemoglobin video imaging enables the direct observation of aqueous flow into the vascular system. Aqueous is seen to centralize within a laminar venous column. Flow is pulsatile, and fluctuations of flow through globe pressure or compression of the aqueous vein are observed. There was a significant increase in the aqueous column after the administration of our SLT protocol (n = 13; P < 0.05). This correlated with the degree of IOP reduction (n = 13; Pearson's correlation coefficient 0.7; P = 0.007) and the improvement in MD observed postintervention (n = 8; Pearson's correlation coefficient 0.75; P = 0.03). Autocorrelation analysis demonstrated a faster rate of decay in an aqueous vein after intervention, indicating an increase in flow rate. Conclusions:Hemoglobin video imaging can be incorporated into a routine clinic slit-lamp examination to allow a detailed assessment and quantification of aqueous outflow in real time. It has the potential to be used to help target therapeutic interventions to improve aqueous outflow and further advance our understanding of aqueous outflow dysregulation in the pathogenesis of glaucoma.
Towards the application of the Maximum Entropy Method to finite temperature Upsilon Spectroscopy
Creators: name: Oevers, M.
name: Davies, C.
name: Shigemitsu, J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: According to the Narnhofer Thirring Theorem interacting systems at finite temperature cannot be described by particles with a sharp dispersion law. It is therefore mandatory to develop new methods to extract particle masses at finite temperature. The Maximum Entropy method offers a path to obtain the spectral function of a particle correlation function directly. We have implemented the method and tested it with zero temperature Upsilon correlation functions obtained from an NRQCD simulation. Results for different smearing functions are discussed.
description: Lattice 2000 (Finite Temperature)