cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Constraining cosmological scaling solutions of a Galileon field
Creators: name: Albuquerque, Inês S.
name: Frusciante, Noemi
name: Martinelli, Matteo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study a Lagrangian with a cubic Galileon term and a standard scalar-field kinetic contribution with two exponential potentials. In this model the Galileon field generates scaling solutions in which the density of the scalar field $ϕ$ scales in the same manner as the matter density at early-time. These solutions are of high interest because the scalar field can then be compatible with the energy scale of particle physics and can alleviate the coincidence problem. The phenomenology of linear perturbations is thoroughly discussed, including all the relevant effects on the observables. Additionally, we use cosmic microwave background temperature-temperature and lensing power spectra by Planck 2018, the baryon acoustic oscillations measurements from the 6dF galaxy survey and SDSS and supernovae type Ia data from Pantheon in order to place constraints on the parameters of the model. We find that despite its interesting phenomenology, the model we investigate does not produce a better fit to data with respect to $Λ$CDM, and it does not seem to be able to ease the tension between high and low redshift data.
description: 12 pages, 9 figures
Target-Space Duality in Heterotic and Type I Effective Lagrangians
Creators: name: Lalak, Zygmunt
name: Lavignac, Stéphane
name: Nilles, Hans Peter
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the implications of target-space duality symmetries for low-energy effective actions of various four-dimensional string theories. In the heterotic case such symmetries can be incorporated in simple orbifold examples. At present a similar statement cannot be made about the simplest type IIB orientifolds due to an obstruction at the level of gravitational anomalies. This fact confirms previous doubts concerning a conjectured heterotic-type IIB orientifold duality and shows that target-space symmetries can be a powerful tool in studying relations between various string theories at the level of the effective low-energy action. Contraints on effective Lagrangians from these symmetries are discussed in detail. In particular, we consider ways of extending T-duality to include additional corrections to the Kaehler potential in heterotic string models with N=2 subsectors.
description: 30 pages, LaTeX2e
title: A Computer-Assisted Proof of Dynamo Growth in the Stretch-Fold-Shear Operator
Creators: name: Pramy, Farhana Akond
Publisher: name: The Open University
Year: 2024

description: This thesis concerns a functional linear operator called the Stretch-Fold-Shear (SFS) operator, which arises from a stylized model in kinematic dynamo theory. A dynamo is the source of the magnetic field of a celestial body such as the Earth, the Sun and, indeed, any planet or star. The existence of an eigenvalue of the SFS operator of magnitude greater than one ensures dynamo growth. This research aims to prove the existence of such an eigenvalue using a computer-assisted proof, thereby confirming a conjecture of Andrew Gilbert.

We have extensively studied the cases of zero shear and positive shear for this operator. We determined the exact eigenvalues and eigenfunctions in the case of zero shear. However, when it came to positive shear, the spectral properties proved challenging to demonstrate using conventional analytic methods. As a result, we employed the generating function method for zero shear and relied on a computer-assisted proof to rigorously establish the properties for positive shear.

Computer-assisted proof is a powerful mathematical technique that utilizes computer technology to develop and verify mathematical proofs. While the computational requirements of these methods can be time-consuming, we have successfully proven Andrew Gilbert's conjecture for certain positive shear values. While previous numerical approximations have been made for the spectrum of the SFS operator, the computer-assisted results presented in this research are the first rigorous results to be obtained.
ABE-Cities: An Attribute-Based Encryption System for Smart Cities
Creators: name: Rasori, Marco
name: Perazzo, Pericle
name: Dini, Gianluca
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In the near future, a technological revolution will involve our cities, where a variety of smart services based on the Internet of Things will be developed to facilitate the needs of the citizens. Sensing devices are already being deployed in urban environments, and they will generate huge amounts of data. Such data are typically outsourced to some cloud storage because this lowers capital and operating expenses and guarantees high availability. However, cloud storage may have incentives to release stored data to unauthorized entities. In this work we present ABE-Cities, an encryption scheme for urban sensing which solves the above problems while ensuring fine-grained access control on data by means of Attribute-Based Encryption (ABE). Basically, ABE-Cities encrypts data before storing it in the cloud and provides users with keys able to decrypt only those portions of data the user is authorized to access. In ABE-Cities, the sensing devices perform only lightweight symmetric cryptography operations, thus they can also be resource-constrained. ABE-Cities provides planned expiration of keys, as well as their unplanned revocation. We propose methods to make the key revocation efficient, and we show by simulations the overall efficiency of ABE-Cities.
Amtliche Mitteilungen der Technischen Universität Dortmund Nr. 21/2019
Creators: name: (:Unkn) Unknown
Publisher: name: Technische Universität Dortmund
Year: 2019
Subjects: subject: 080

description: Fächerspezifische Bestimmungen an der Technischen Universität Dortmund vom 24. Oktober 2019 für das Unterrichtsfach Chemie für ein Lehramt für sonderpädagogische Förderung zur Prüfungsordnung für die Lehramtsbachelorstudiengänge
description: Fächerspezifische Bestimmungen an der Technischen Universität Dortmund vom 24. Oktober 2019 für das Unterrichtsfach Chemie für ein Lehramt an Haupt-, Real-, Sekundar- und Gesamtschulen zur Prüfungsordnung für die Lehramtsbachelorstudiengänge
description: Amtliche Mitteilungen der Technischen Universität Dortmund;2019, 21
Additional file 1 of Systematic comparison of published host gene expression signatures for bacterial/viral discrimination
Creators: name: Bodkin, Nicholas
name: Ross, Melissa
name: McClain, Micah T.
name: Ko, Emily R.
name: Woods, Christopher W.
name: Ginsburg, Geoffrey S.
name: Henao, Ricardo
name: Tsalik, Ephraim L.
Publisher: name: figshare
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 1:. Document containing supplementary tables S1-S5 and supplementary figures S1-S3
ADAPTING ENGLISH LANGUAGE TEACHING TO DIFFERENT LEARNING STYLES
Creators: name: Ozodakhon Elmurod qizi Izzatillaeva, Uzbekistan state world languages university
Publisher: name: Zenodo
Year: 2024

description: Adapting English language teaching to different learning styles is a crucial aspect of creating an inclusive and effective educational environment. Recognizing and catering to diverse learning styles not only enhances student engagement but also fosters a more personalized and impactful language learning experience. This article explores the significance of understanding and accommodating various learning styles in English language teaching, offering insights into practical strategies for educators.

Keywords: English language teaching, learning styles, adaptability, student engagement, personalized education.
Relativistic Magnetized Astrophysical Plasma Outflows in Black-Hole Microquasars
Creators: name: Papavasileiou, Theodora
name: Kosmas, Odysseas
name: Sinatkas, Ioannis
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recently, microquasar jets have aroused the interest of many researchers focusing on the astrophysical plasma outflows and various jet ejections. In this work, we concentrate on the investigation of electromagnetic radiation and particle emissions from the jets of stellar black hole binary systems characterized by the hadronic content in their jets. Such emissions are reliably described within the context of the relativistic magneto-hydrodynamics. Our model calculations are based on the Fermi acceleration mechanism through which the primary particles (mainly protons) of the jet are accelerated. As a result, a small portion of thermal protons of the jet acquire relativistic energies, through shock-waves generated into the jet plasma. From the inelastic collisions of fast (non-thermal) protons with the thermal (cold) ones, secondary charged and neutral particles (pions, kaons, muons, $η$-particles, etc.) are created as well as electromagnetic radiation from the radio wavelength band, to X-rays and even to very high energy gamma-rays. One of our main goals is, through the appropriate solution of the transport equation and taking into account the various mechanisms that cause energy losses to the particles, to study the secondary particle concentrations within hadronic astrophysical jets. After testing our method on the Galactic MQs SS 433 and Cyg X-1, as a concrete extragalactic binary system, we examine the LMC X-1 located in the Large Magellanic Cloud, a satellite galaxy of our Milky Way Galaxy. It is worth mentioning that, for the companion O star (and its extended nebula structure) of the LMC X-1 system, new observations using spectroscopic data from VLT/UVES have been published few years ago.
description: 11 pages, 3 figures (8 subfigures), submitted to Symmetry journal (published by MDPI)
Additional file 1: of Genetic disease risks can be misestimated across global populations
Creators: name: Kim, Michelle
name: Patel, Kane
name: Teng, Andrew
name: Berens, Ali
name: Lachance, Joseph
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Table S1. Effects of different p value thresholds for GWAS simulations. (DOCX 49 kb)
Unravelling Metastable Markovian Open Quantum Systems
Creators: name: Brown, Calum A.
name: Macieszczak, Katarzyna
name: Jack, Robert L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We analyse the dynamics of metastable Markovian open quantum systems by unravelling their average dynamics into stochastic trajectories. We use quantum reset processes as examples to illustrate metastable phenomenology, including a simple three-state model whose metastability is of classical type, and a two-qubit model that features a metastable decoherence free subspace. In the three-state model, the trajectories exhibit classical metastable phenomenology: fast relaxation into distinct phases and slow transitions between them. This extends the existing correspondence between classical and quantum metastability. It enables the computation of committors for the quantum phases, and the mechanisms of rare transitions between them. For the two-qubit model, the decoherence-free subspace appears in the unravelled trajectories as a slow manifold on which the quantum state has a continuous slow evolution. This provides a classical (non-metastable) analogue of this quantum effect. We discuss the general implications of these results, and we highlight the useful role of quantum reset processes for analysis of quantum trajectories in metastable systems.
description: 19 pages, 7 figures
IMPROVING THE METHODOLOGY OF DEVELOPING THE COMPETENCE OF FUTURE TECHNOLOGY TEACHERS USING MOBILE APPLICATIONS
Creators: name: Ismailova, Momogul
Publisher: name: Zenodo
Year: 2024

description: This article provides extensive information on the creation of electronic educational resources based on mobile technologies, and highlights the possibilities and conveniences of mobile education. The analysis of world trends shows that the use of mobile technologies for solving various pedagogical tasks in the educational process is of great vital importance. The article also presents the technology of creating electronic educational resources based on mobile technologies, programs that create mobile books, and several ways of using mobile devices for educational purposes.
Supergravity Tensor Calculus in 5D from 6D
Creators: name: Kugo, T.
name: Ohashi, K.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Supergravity tensor calculus in five spacetime dimensions is derived by dimensional reduction from the d=6 superconformal tensor calculus. In particular, we obtain an off-shell hypermultiplet in 5D from the on-shell hypermultiplet in 6D. Our tensor calculus still retains the dilatation gauge symmetry so that it becomes a trivial gauge fixing to make the Einstein term canonical in a general matter-Yang-Mills-supergravity coupled system.
description: 38 pages, no figures, LaTeX, version to appear in PTP 104(2000),835-865
It's Time for a National Surveillance System for Vaccine Confidence and Hesitancy
Creators: name: Gilkey M.B
name: Brewer N.T
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2023

description: How did the coronavirus disease 2019 (COVID-19) pandemic change parents’ confidence in and motivation to get vaccines for their children? Two studies in this issue of Pediatrics seek to address this pressing question, providing novel data that suggest reasons for both reassurance and concern. Beginning with the good news, Higgins et al found no change in a composite measure of vaccine beliefs (or confidence) and motivation (hesitancy) when they surveyed repeated cross-sections of Colorado parents about early childhood vaccination over the course of the pandemic. The bad news was that the study identified large proportions of parents (19% to 23%) with serious misgivings about vaccines at each time point, with the proportion being even higher among some parents of minoritized children, parents with lower levels of education, and others. In contrast, Honcoop et al used qualitative data from a multistate sample of 36 parents to understand hesitancy to get COVID-19 vaccines for children. They found trust in health care providers on the one hand, but a desire for more information and high exposure to misinformation on the other. Taken together, these studies suggest that the pandemic failed to fundamentally reshape parents’ orientation to childhood vaccination, but that low confidence and high hesitancy nevertheless remain prevalent and persistent barriers to protecting our children from vaccine preventable diseases.
Rapid infrared flares in GRS 1915+105 : evidence for infrared synchrotron emission
Creators: name: Fender, R. P.
name: Pooley, G. G.
name: Brocksopp, C.
name: Newell, S. J.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report imaging photometry of the radio-jet black hole candidate source GRS 1915+105 in the infrared K band. The observations reveal rapid infrared flare events on timescales of less than an hour. These events are strikingly similar to those regularly observed in radio monitoring at 15 GHz. Furthermore, when dereddened, the infrared events have comparable amplitudes to the radio oscillations, and observations at 15 GHz made approx. 8 hr after our infrared observations reveal that the source was indeed displaying radio oscillations at this time. We suggest that we have observed infrared synchrotron emission from this source. We estimate the equipartition magnetic field and power required to accelerate the particles for the repeated radio events, and find both to be orders of magnitude greater than those estimated for any other X-ray binary.
description: Accepted for publication as a letter in MNRAS. Five pages, three figures
Simulating the evolution of optically dark HI clouds in the Virgo cluster : will no-one rid me of this turbulent sphere ?
Creators: name: Taylor, Rhys
name: Wünsch, Richard
name: Palouš, Jan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Most detected neutral atomic hydrogen (HI) at low redshift is associated with optically bright galaxies. However, a handful of HI clouds are known which appear to be optically dark and have no nearby potential progenitor galaxies, making tidal debris an unlikely explanation. In particular, 6 clouds identified by the Arecibo Galaxy Environment Survey are interesting due to the combination of their small size, isolation, and especially their broad line widths atypical of other such clouds. A recent suggestion is that these clouds exist in pressure equilibrium with the intracluster medium, with the line width arising from turbulent internal motions. Here we explore that possibility by using the FLASH code to perform a series of 3D hydro simulations. Our clouds are modelled using spherical Gaussian density profiles, embedded in a hot, low-density gas representing the intracluster medium. The simulations account for heating and cooling of the gas, and we vary the structure and strength of their internal motions. We create synthetic HI spectra, and find that none of our simulations reproduce the observed cloud parameters for longer than about 100 Myr : the clouds either collapse, disperse, or experience rapid heating which would cause ionisation and render them undetectable to HI surveys. While the turbulent motions required to explain the high line widths generate structures which appear to be inherently unstable, making this an unlikely explanation for the observed clouds, these simulations demonstrate the importance of including the intracluster medium in any model seeking to explain the existence of these objects.
description: 15 pages, 11 figures. Accepted for publication in MNRAS
Additional file 2 of A pair of long intergenic non-coding RNA LINC00887 variants act antagonistically to control Carbonic Anhydrase IX transcription upon hypoxia in tongue squamous carcinoma progression
Creators: name: Shen, Tao
name: Xia, Wangxiao
name: Min, Sainan
name: Yang, Zixuan
name: Cheng, Lehua
name: Wang, Wei
name: Zhan, Qianxi
name: Shao, Fanghong
name: Zhang, Xuehan
name: Wang, Zhiyu
name: Zhang, Yan
name: Shen, Guodong
name: Zhang, Huafeng
name: Wu, Li-Ling
name: Yu, Guang-Yan
name: Kong, Qing-Peng
name: Wang, Xiangting
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional File 2: Fig S1. Up-regulation of LINC00887 is correlated with poor survival rate of TSCC patients. Fig S2. The variety, existence and relative abundance of 887S, 887L and other LINC00887 variants. Fig S3. The expression pattern of 887S and 887L in the indicated cell lines. Fig S4. 887S and 887L subcellular localization and coding potential. Fig S5. Efficiency of gain-of-function or loss-of-function experiments in the indicated 887S and 887L knockdown or overexpression cells. Fig S6. CA9 promotes tumor progression in TSCC. Fig S7. Expression level of CA9 in the indicated 887S or 887L modulated cells. Fig S8. 887S and 887L regulates intracellular pH in TSCC. Fig S9. Effects of 887S and 887L on xenograft growth in Balb/c (nu/nu) mice. Fig S10. Effects of ASO-mediated 887S knockdown. Fig S11. In vitro transcribed 887S visualized by agarose gel with 1% formaldehyde. Fig S12. 887L promotes TSCC progression under normoxia.
Kerr-(Anti-)de Sitter Black Holes: Perturbations and quasi-normal modes in the slow rotation limit
Creators: name: Tattersall, Oliver J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the perturbations of scalar, vector, and tensor fields in a slowly rotating Kerr-(Anti-)de Sitter black hole spacetime, presenting new and existing Schrödinger style master equations for each type of perturbation up to linear order in black hole spin $a$. For each type of field we calculate analytical expressions for the fundamental quasi-normal mode frequencies. These frequencies are compared to existing results for Schwarzschild-de Sitter, slowly rotating Kerr, and slowly rotating Kerr-de Sitter black holes. In all cases good agreement is found between the analytic expressions and those frequencies calculated numerically. In addition, the axial and polar gravitational frequencies are shown to be isospectral to linear order in $a$ for all cases other than for both non-zero $a$ and $Λ$.
description: Updated to match published version
The Measurement of Tri-Linear Gauge Boson Couplings at $e^+e^-$ Colliders
Creators: name: Couture, G.
name: Gintner, M.
name: Godfrey, S.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe a detailed study of the process $e^+e^- \to \ellν_\ell q \bar{q}$ and the measurement of tri-linear gauge boson couplings (TGV's) at LEP200 and at a 500~GeV and 1~TeV NLC. We included all tree level Feynman diagrams contributing to the four-fermion final states including gauge boson widths and non-resonance contributions. We employed a maximum likelihood analysis of a five dimensional differential cross section of angular distributions. This approach appears to offer an optimal strategy for measurement of TGV's. LEP200 will improve existing measurements of TGV's but not enough to see loop contributions of new physics. Measurements at the NLC will be roughly 2 orders of magnitude more precise which would probe the effects of new physics at the loop level.
description: Latex file uses aipbook.sty with revtex and psfig.sty. 2 figures (uuencoded) will be added with figures command. Full postcript version with embedded figures is available at ftp://ftp.physics.carleton.ca/pub/theory/godfrey/ocipc9504.ps To appear in the Proceedings of the International Symposium on Vector Boson Self-Interactions, UCLA, Feb. 1-3, 1995
Hawking radiation for detectors in superposition of locations outside a black hole
Creators: name: Paczos, Jerzy
name: Barbado, Luis C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hawking radiation is the proposed thermal black-body radiation of quantum nature emitted from a black hole. One common way to give an account of Hawking radiation is to consider a detector that follows a static trajectory in the vicinity of a black hole and interacts with the quantum field of the radiation. In the present work, we study the Hawking radiation perceived by a detector that follows a quantum superposition of static trajectories in Schwarzschild spacetime, instead of a unique well-defined trajectory. We analyze the quantum state of the detector after the interaction with a massless real scalar field. We find that for certain trajectories and excitation levels, there are non-vanishing coherences in the final state of the detector. We then examine the dependence of these coherences on the trajectories followed by the detector and relate them to the distinguishability of the different possible states in which the field is left after the excitation of the detector. We interpret our results in terms of the spatial distribution and propagation of particles of the quantum field.
description: 9+6 pages, 6 figures
Strings and the Gauge Theory of Spacetime Defects
Creators: name: Duan, Yishi
name: Jiang, Ying
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: we present a new topological invariant to describe the space-time defect which is closely related to torsion tensor in Riemann-Cartan manifold. By virtue of the topological current theory and $ϕ$-mapping method, we show that there must exist many strings objects generated from the zero points of $ϕ$-mapping, and these strings are topological quantized and the topological quantum numbers is the Winding numbers described by the Hopf indices and the Brouwer degrees of the $ϕ$-mapping.
description: 12 pages, no figures, LaTeX. Int. J. Theor. Phys., to appear in 1999, No.2
Additional file 5: of Perceptions of students in health and molecular life sciences regarding pharmacogenomics and personalized medicine
Creators: name: Mahmutovic, Lejla
name: Betul Akcesme
name: Camil Durakovic
name: Akcesme, Faruk
name: Maric, Aida
name: Adilovic, Muhamed
name: Hamad, Nour
name: Wjst, Matthias
name: Feeney, Oliver
name: Semiz, Sabina
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Studentsâ opinion regarding the study curriculum and their future plans in pharmacogenomicsâ the table represents p values calculated with chi-square test between each faculty, based on the third question from TableÂ 4. (PDF 134 kb)
Mass density vs. energy density at cosmological scales
Creators: name: Eingorn, Maxim
name: Yilmaz, Ezgi
name: Yükselci, A. Emrah
name: Zhuk, Alexander
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In the presence of the gravitational field, the energy density of matter no longer coincides with its mass density. A discrepancy exists, of course, also between the associated power spectra. Within the $Λ$CDM model, we derive a formula that relates the power spectrum of the energy density to that of the mass density and test it with the help of N-body simulations run in comoving boxes of 2.816 Gpc/$h$. The results confirm the validity of the derived formula and simultaneously show that the power spectra diverge significantly from one another at large cosmological scales.
description: 11 pages, 4 figures; matches the published version in Physics Letters B
Deep-UV to mid-IR supercontinuum generation driven by mid-IR ultrashort pulses in a gas-filled fiber
Creators: name: Adamu, Abubakar I.
name: Habib, Md. Selim
name: Petersen, Christian R.
name: Antonio-Lopez, J. Enrique
name: Zhou, Binbin
name: Schülzgen, Axel
name: Amezcua-Correa, Rodrigo
name: Bang, Ole
name: Markos, Christos
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Supercontinuum (SC) generation based on ultrashort pulse compression constitutes one of the most promising technologies towards an ultra-wide bandwidth, high-brightness and spatially coherent light sources for applications such as spectroscopy and microscopy. Here, multi-octave SC generation in a gas-filled hollow-core antiresonant fiber (HC-ARF) is reported spanning from 200 nm in the deep ultraviolet (DUV) to 4000 nm in the mid-infrared (mid-IR). A measured average output power of 5 mW was obtained by pumping at the center wavelength of the first anti-resonance transmission window (2460 nm) with ~100 fs pulses and an injected pulse energy of ~7-8 μJ. The mechanism behind the extreme spectral broadening relies upon intense soliton-plasma nonlinear dynamics which leads to efficient soliton self-compression and phase-matched dispersive wave (DW) emission in the DUV region. The strongest DW is observed at 275 nm having an estimated pulse energy of 1.42 μJ, corresponding to 28.4 % of the total output energy. Furthermore, the effect of changing the pump pulse energy and gas pressure on the nonlinear dynamics and their direct impact on SC generation was investigated. The current work paves a new way towards novel investigations of gas-based ultrafast nonlinear optics in the emerging mid-IR spectral regime.
Carnet nº 21, commencé à Canton (p. 45)
Creators: name: Péraire, Lucien
name: CNRS
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2023

description: created: 28-7-1931
RX J0720.4--3125 as a Possible Example of the Magnetic Field Decay of Neutron Stars
Creators: name: Konenkov, D. Yu.
name: Popov, S. B.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We studied possible evolution of the rotational period and the magnetic field of the X-ray source RX J0720.4-3125 assuming this source to be an isolated neutron star accreting interstellar medium. Magnetic field of the source is estimated to be $10^6 - 10^9$ G, and it is difficult to explain observed rotational period 8.38 s without invoking hypothesis of the magnetic field decay. We used the model of ohmic decay of the crustal magnetic field. The estimates of accretion rate ($10^{-14} - 10^{-16} M_\odot/yr$), velocity of the source relative to interstellar medium ($10 - 50 $ km/s), neutron star age ($2\cdot 10^9 - 10^{10}$ yrs) are obtained.
description: 12 pages (LATEX), 2 PostScript figures. Also available at http://xray.sai.msu.su/~polar/ (with the Russian variant of the article)
Where Do We Go From Here? A Content Analysis of ALA Presidential Columns in American Libraries.
Creators: name: Winemiller, Sam
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2024

description: The purpose of this research was to understand the messaging of recent American Library Association presidents, and by doing so, explore how they have imagined what libraries should be, and what librarians should do. Within the U.S. context, these figures’ messages serve as important historical markers of issues that libraries and librarians have wrestled with at a given time, and to some degree, the formal positions and directions of the library profession’s primary governing body. Understanding how these individuals have imagined libraries is a worthwhile endeavor given their relative importance to the field and indicates prevailing schools of thought within the profession as to what U.S. librarianship should be about over the next several decades. I conducted a content analysis of columns written by the past 25 ALA presidents appearing in the ALA publication American Libraries and, by identifying both consistent patterns across the sample and changes over time, argued that several key issues define the present and future of the field. These included: libraries’ move down a metaphorical hierarchy of needs from self-actualization to safety, libraries’ commitment to intellectual freedom vs. their traditional state building purpose, the increasingly explicit social justice orientation of the field, vocational awe and job creep, libraries and structural economic change, and libraries’ commitment to the public good vs. neoliberalism. I close by suggesting a path of critical technical practice that may help the field find its way forward amid a time of transition.
Sprattus sprattus subsp. phalericus Risso 1826
Creators: name: Nurettin Meriç
name: Lütfiye Eryilmaz
name: Müfit Özulug
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Clupeiformes
Clupeidae
Sprattus
Sprattus sprattus
Sprattus sprattus phalericus risso, 1826

description: Sprattus sprattus phalericus Risso, 1826
Sea of Marmara: 4200-59 (1 spc.), 21.05.1971, Beykoz fish trap; 4200-69 (6 spa), 21.05.1971, Beykoz fish trap.
description: Published as part of Nurettin Meriç, Lütfiye Eryilmaz & Müfit Özulug, 2007, A catalogue of the fishes held in the Istanbul University, Science Faculty, Hydrobiology Museum., pp. 29-54 in Zootaxa 1472 on page 29
QCD improved parton distribution functions of ${\mathbf{γ^*_L}}$
Creators: name: Chyla, Jiri
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: QCD corrections to the QED formula for parton distribution functions of the longitudinal virtual photon are derived in the leading--logarithmic approximation. It is shown that the resulting PDF satisfy the same homogeneous evolution equations as those of hadrons, but contrary to the latter are perturbatively calculable. Properties of these distribution functions are discussed and their phenomenological consequences outlined.
description: 9 pages, Latex, 5 figures in eps format
Additional file 2: of Barriers to access and utilization of emergency obstetric care at health facilities in sub-Saharan Africa: a systematic review of literature
Creators: name: Ayele Geleto
name: Chojenta, Catherine
name: Abdulbasit Musa
name: Loxton, Deborah
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Result of quality appraisal, the Mixed Methods Appraisal Tool (MMAT). (DOCX 18 kb)
Electroweak Symmetry Breaking and Extra Dimensions
Creators: name: Cheng, Hsin-Chia
name: Dobrescu, Bogdan A.
name: Hill, Christopher T.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Electroweak symmetry can be naturally broken by observed quark and gauge fields in various extra-dimensional configurations. No new {\it fundamental} fields are required below the quantum gravitational scale ($\sim$ 10 - 100 TeV). We examine schemes in which the QCD gauge group alone, in compact extra dimensions, forms a composite Higgs doublet out of (t,b)_L and a linear combination of the Kaluza-Klein modes of t_R. The effective theory at low energies is the Standard Model. The top-quark mass is controlled by the number of active t_R Kaluza-Klein modes below the string scale, and is in agreement with experiment.
description: 25 pages. More clarifications in section 2 on the equivalence between the orbifold projection and the boundary conditions. Version to be published in Nuclear Physics B
Perceptions of Primary Source Materials in the Jewish Studies Undergraduate Classroom
Creators: name: McDonald, Kenyatta
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2024

description: In the undergraduate classroom there can be a heavy reliance on primary source materials
to meet learning objectives. This is especially true in religion-focused classes where
materials are critical to students developing an understanding of the topic. The perception
of primary source materials usage in the Jewish Studies undergraduate classroom for both
faculty and students at a Southeastern Public University in the United States was studied.
It analyzes the experiences of participants with primary source material in the classroom,
particularly those accessible through faculty resources. Interviews from participants active
in Jewish Studies courses during the Spring 2024 semester were analyzed. Data collected
for this research suggests that while students do find value in primary source materials,
they do little to illustrate this to their professors in the classroom. I believe this paper will
help faculty and students understand the impact primary source materials might play in
supplementing undergraduate education.
Intertwined van-Hove Singularities as a Mechanism for Loop Current Order in Kagome Metals
Creators: name: Li, Heqiu
name: Kim, Yong Baek
name: Kee, Hae-Young
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent experiments on Kagome metals AV$_3$Sb$_5$ (A=Cs,Rb,K) indicated spontaneous time-reversal symmetry breaking in the charge density wave state in the absence of static magnetization. The loop current order (LCO) is proposed as its cause, but a microscopic model explaining the emergence of LCO through electronic correlations has not been firmly established. We show that the coupling between van-Hove singularities (vHS) with distinct mirror symmetries is a key ingredient to generate LCO ground state. By constructing an effective model, we find that when multiple vHS with opposite mirror eigenvalues are close in energy, the nearest-neighbor electron repulsion favors a ground state with coexisting LCO and charge bond order. It is then demonstrated that this mechanism applies to the Kagome metals AV$_3$Sb$_5$. Our findings provide an intriguing mechanism of LCO and pave the way for a deeper understanding of complex quantum phenomena in Kagome systems.
On the construction of numerical iterative schemes of any order of convergence for solving nonlinear systems of equations
Creators: name: Hothazie, Stefan
name: Elena, Munteanu Camelia
name: Nastase, Mihaela
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: This paper presents a methodology for constructing iterative schemes of any order of convergence for solving nonlinear systems of equations. It also provides formulas for the order of convergence of any iterative schemes constructed using the method proposed in this paper. A test case is conducted numerically for the second and third order of convergence using a computer algebra system called Maxima. The code used is listed at the end of the test case.
description: 14 pages
Early warning indicators via latent stochastic dynamical systems
Creators: name: Feng, Lingyu
name: Gao, Ting
name: Xiao, Wang
name: Duan, Jinqiao
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Detecting early warning indicators for abrupt dynamical transitions in complex systems or high-dimensional observation data is essential in many real-world applications, such as brain diseases, natural disasters, and engineering reliability. To this end, we develop a novel approach: the directed anisotropic diffusion map that captures the latent evolutionary dynamics in the low-dimensional manifold. Then three effective warning signals (Onsager-Machlup Indicator, Sample Entropy Indicator, and Transition Probability Indicator) are derived through the latent coordinates and the latent stochastic dynamical systems. To validate our framework, we apply this methodology to authentic electroencephalogram (EEG) data. We find that our early warning indicators are capable of detecting the tipping point during state transition. This framework not only bridges the latent dynamics with real-world data but also shows the potential ability for automatic labeling on complex high-dimensional time series.
Engraulis encrasicolus
Creators: name: Nurettin Meriç
name: Lütfiye Eryilmaz
name: Müfit Özulug
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Clupeiformes
Engraulidae
Engraulis
Engraulis encrasicolus

description: Engraulis encrasicolus (Linnaeus, 1758)
Sea of Marmara: 4600-76 (1 spc.), 21.05.1971, Beykoz; 4600-674 (1 spa), 11.02.1995, western waters of Imrali Island, trawl, 51 m, L. Eryilmaz. Mediterranean Sea: 4600-726 (1 spc.), 14.10.2004, Iskenderun Bay, trawl, 58 m, C. Dalyan. Inland water: 4600-619 (1 spc.), 24.07.1980, Büyükçekmece Lagoon, Istanbul, N. Meriç; 4600-618 (4 spc.), 07.12.1972, Küçükçekmece Lagoon, Istanbul, N. Meriç.
description: Published as part of Nurettin Meriç, Lütfiye Eryilmaz & Müfit Özulug, 2007, A catalogue of the fishes held in the Istanbul University, Science Faculty, Hydrobiology Museum., pp. 29-54 in Zootaxa 1472 on page 29
Conformal Higher-Spin Gravity: Linearized Spectrum = Symmetry Algebra
Creators: name: Basile, Thomas
name: Bekaert, Xavier
name: Joung, Euihun
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The linearized spectrum and the algebra of global symmetries of conformal higher-spin gravity decompose into infinitely many representations of the conformal algebra. Their characters involve divergent sums over spins. We propose a suitable regularization adapted to their evaluation and observe that their characters are actually equal. This result holds in the case of type-A and type-B (and their higher-depth generalizations) theories and confirms previous observations on a remarkable rearrangement of dynamical degrees of freedom in conformal higher-spin gravity after regularization.
description: 47 pages, 1 figures; v2: references and appendix D on formal CHS theory (Segal's formulation) added
Observing the technieta at a photon linear collider
Creators: name: Tandean, Jusak
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: If electroweak symmetry is spontaneously broken by technicolor, there will be technimesons analogous to the mesons of the ordinary strong interactions. One of the lightest technimesons is the technieta $η'_T$ (the analogue of the~$η'$). In this work we consider the possibility of observing it at a linear $e^+e^-$ collider operating in the $γγ$ mode. Detecting the process $γγ\rightarrowη'_T$ allows for the measurement of the $η'_Tγγ$ anomalous coupling which is in principle sensitive to the underlying technifermion substructure.
description: 17 pages, revtex, no figures
Fibrolamellar carcinomas–growth arrested by paracrine signals complexed with synthesized 3-O sulfated heparan sulfate oligosaccharides
Creators: name: Wang, Xicheng
name: Oikawa, Tsunekazu
name: Sethupathy, Praveen
name: Xu, Yongmei
name: Liu, Jian
name: Zhang, Wencheng
name: Wu, Guoxiu
name: Su, Guowei
name: Wauthier, Eliane
name: He, Zhiying
name: Reid, Lola M
Publisher: name: Elsevier
Year: 2023

description: Fibrolamellar carcinomas (FLCs), lethal tumors occurring in children to young adults, have genetic signatures implicating derivation from biliary tree stem cell (BTSC) subpopulations, co-hepato/pancreatic stem cells, involved in hepatic and pancreatic regeneration. FLCs and BTSCs express pluripotency genes, endodermal transcription factors, and stem cell surface, cytoplasmic and proliferation biomarkers. The FLC-PDX model, FLC-TD-2010, is driven ex vivo to express pancreatic acinar traits, hypothesized responsible for this model's propensity for enzymatic degradation of cultures. A stable ex vivo model of FLC-TD-2010 was achieved using organoids in serum-free Kubota's Medium (KM) supplemented with 0.1% hyaluronans (KM/HA). Heparins (10 ng/ml) caused slow expansion of organoids with doubling times of ∼7-9 days. Spheroids, organoids depleted of mesenchymal cells, survived indefinitely in KM/HA in a state of growth arrest for more than 2 months. Expansion was restored with FLCs co-cultured with mesenchymal cell precursors in a ratio of 3:7, implicating paracrine signaling. Signals identified included FGFs, VEGFs, EGFs, Wnts, and others, produced by associated stellate and endothelial cell precursors. Fifty-three, unique heparan sulfate (HS) oligosaccharides were synthesized, assessed for formation of high affinity complexes with paracrine signals, and each complex screened for biological activity(ies) on organoids. Ten distinct HS-oligosaccharides, all 10-12 mers or larger, and in specific paracrine signal complexes elicited particular biological responses. Of note, complexes of paracrine signals and 3-O sulfated HS-oligosaccharides elicited slowed growth, and with Wnt3a, elicited growth arrest of organoids for months. If future efforts are used to prepare HS-oligosaccharides resistant to breakdown in vivo, then [paracrine signal-HS-oligosaccharide] complexes are potential therapeutic agents for clinical treatments of FLCs, an exciting prospect for a deadly disease.
Compactification of Supermembranes
Creators: name: Codirla, C.
name: Perry, M. J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We look at the vertical dimensional reduction of the supermembrane of M-theory to the D2-brane of Type IIA string theory. Our approach considers the soliton solutions of the two low energy field limits, D=11 and D=10 Type IIA supergravities, rather than the worldvolume actions. It is thus necessary to create a periodic array. The standard Kaluza-Klein procedure requires that the brane is smeared over a transverse direction, but we will keep the dependence on the compactification coordinate, seeing how the eleventh dimension comes into play when we close up on the D2-brane.
description: 26 pages, LaTeX
Thermal freeze-out parameters and pseudo-entropy from charged hadron spectra in high energy collisions
Creators: name: Zhang, Xu-Hong
name: Gao, Ya-Qin
name: Liu, Fu-Hu
name: Olimov, Khusniddin K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We collected the transverse momentum (mass) spectra of charged hadrons ($π^{-}$, $π^{+}$, $K^{-}$, $K^{+}$, $\overline{p}$, and $p$) produced in collisions over a center-of-mass energy range from 2.70 to 200 GeV (per nucleon pair). The modified Tsallis--Pareto-type function (the TP-like function) with average transverse flow velocity is used to describe the contribution of participant or constituent quarks to transverse momentum of considered hadron. The experimental spectra of $π^{\mp}$ and $K^{\mp}$ (or $\overline{p}$ and $p$) are fitted by the convolution of two (or three) TP-like functions due to the fact that two (or three) constituent quarks are regarded as two (or three) energy resources in the formation of considered hadron. From the reasonable fits to the spectra, the thermal freeze-out parameters are extracted, and the pseudo-entropy is newly defined and extracted. Some parameters quickly change in the energy range of less than 7.7 GeV, and slowly change in the energy range of greater than 7.7 GeV, indicating the variation of collision mechanism at around 7.7 GeV.
description: 35 pages, 15 figures. Advances in High Energy Physics, accepted
Abramis brama
Creators: name: Nurettin Meriç
name: Lütfiye Eryilmaz
name: Müfit Özulug
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Cypriniformes
Cyprinidae
Abramis
Abramis brama

description: Abramis brama (Linnaeus, 1758)
Inland water: 30500-652 (1 spc.), 19.12.2000, Durusu Lake, Istanbul, M. Ôzulug.
description: Published as part of Nurettin Meriç, Lütfiye Eryilmaz & Müfit Özulug, 2007, A catalogue of the fishes held in the Istanbul University, Science Faculty, Hydrobiology Museum., pp. 29-54 in Zootaxa 1472 on page 29