cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Detection of Cosmic Magnification via Galaxy Shear -- Galaxy Number Density Correlation from HSC Survey Data
Creators: name: Liu, Xiangkun
name: Liu, Dezi
name: Gao, Zucheng
name: Wei, Chengliang
name: Li, Guoliang
name: Fu, Liping
name: Futamase, Toshifumi
name: Fan, Zuhui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We propose a novel method to detect cosmic magnification signals by cross-correlating foreground convergence fields constructed from galaxy shear measurements with background galaxy positional distributions, namely shear-number density correlation. We apply it to the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) survey data. With 27 non-independent data points and their full covariance, $χ_0^2\approx 34.1$ and $χ_T^2\approx 24.0$ with respect to the null and the cosmological model with the parameters from HSC shear correlation analyses in Hamana et al. 2020 (arXiv:1906.06041), respectively. The Bayes factor of the two is $\log_{10}B_{T0}\approx 2.2$ assuming equal model probabilities of null and HSC cosmology, showing a clear detection of the magnification signals. Theoretically, the ratio of the shear-number density and shear-shear correlations can provide a constraint on the effective multiplicative shear bias $\bar m$ using internal data themselves. We demonstrate the idea with the signals from our HSC-SSP mock simulations and rescaling the statistical uncertainties to a survey of $15000°^2$. For two-bin analyses with background galaxies brighter than $m_{lim}=23$, the combined analyses lead to a forecasted constraint of $σ(\bar m) \sim 0.032$, $2.3$ times tighter than that of using the shear-shear correlation alone. Correspondingly, $σ(S_8)$ with $S_8=σ_8(Ω_\mathrm{m}/0.3)^{0.5}$ is tightened by $\sim 2.1$ times. Importantly, the joint constraint on $\bar m$ is nearly independent of cosmological parameters. Our studies therefore point to the importance of including the shear-number density correlation in weak lensing analyses, which can provide valuable consistency tests of observational data, and thus to solidify the derived cosmological constraints.
description: 9 pages, 4 figures; Accepted for publication in PRD
$p$-adic Eisenstein-Kronecker series for CM elliptic curves and the Kronecker limit formulas
Creators: name: Bannai, Kenichi
name: Furusho, Hidekazu
name: Kobayashi, Shinichi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G55, 11G07, 11G15, 14F30, 14G10

description: Consider an elliptic curve defined over an imaginary quadratic field $K$ with good reduction at the primes above $p\geq 5$ and has complex multiplication by the full ring of integers $\mathcal{O}_K$ of $K$. In this paper, we construct $p$-adic analogues of the Eisenstein-Kronecker series for such elliptic curve as Coleman functions on the elliptic curve. We then prove $p$-adic analogues of the first and second Kronecker limit formulas by using the distribution relation of the Kronecker theta function.
description: v2. The current version is the synthesis of {\S}1-{\S}3 of the first version of this article with the content of arXiv:0807.4008 "The Kronecker limit formulas via the distribution relation." {\S}4,{\S}5 of the first version of this paper will be treated in a subsequent article
Implementation of a modal filtering procedure
Creators: name: Fraser, David Raye
Publisher: name: University of British Columbia
Year: 2010

description: A FORTRAN program has been developed in order to investigate the process of modal parameter estimation and non-parametric system identification. The theory underlying the process of modal parameter estimation is reviewed and the decoupling of a MIMO system into several SISO systems is demonstrated. Modal filtering is shown to be useful in the field of non-parametric system identification and it is shown that it may also be of some use in the field of signal processing. The program is documented. It simulates the output of a n-th order system from which a smaller order subsystem can be decoupled. The modal parameters of a subsystem output signal and its first two derivatives and the modal parameters of a second subsystem output and its first derivative are calculated. The unit step response of the theoretical system and the subsystem are then calculated. The signals are then modal filtered to produce the periodic unit step response and the periodic unit square wave response. Finally, the discrete Fourier coefficients of the periodic unit step response are calculated.
VAFBM-2002-05: Monitoring for Umbra/El Rancho Road fiber optics cable installation
Creators: name: Zalud, Arianna
Year: 2002

description: This document is the site visit / monitoring summary for monitoring for the Umbra/El Ranch Road fiber optics cable installation, near SBA-1565, completed by Andrea Van Schmus in 2002.
Hadronic Gamma Rays from Supernova Remnants
Creators: name: Moskalenko, I. V.
name: Porter, T. A.
name: Malkov, M. A.
name: Diamond, P. H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A gas cloud near a supernova remnant (SNR) provides a target for pp-collisions leading to subsequent gamma-ray emission through neutral pion decay. The assumption of a power-law ambient spectrum of accelerated particles with index near -2 is usually built into models predicting the spectra of very-high energy (VHE) gamma-ray emission from SNRs. However, if the gas cloud is located at some distance from the SNR shock, this assumption is not necessarily correct. In this case, the particles which interact with the cloud are those leaking from the shock and their spectrum is approximately monoenergetic with the injection energy gradually decreasing as the SNR ages. In the GLAST energy range the gamma-ray spectrum resulting from particle interactions with the gas cloud will be flatter than expected, with the cutoff defined by the pion momentum distribution in the laboratory frame. We evaluate the flux of particles escaping from a SNR shock and apply the results to the VHE diffuse emission detected by the HESS at the Galactic centre.
description: 4 pages, 3 figures. Contribution to the 30th ICRC, Merida, Mexico, 2007 (final version)
Measurements of Partial Branching Fractions for Bbar --> X_u ell nubar and Determination of |V_{ub}|
Creators: name: The BABAR Collaboration
name: al, B. Aubert et
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present partial branching fractions for inclusive charmless semileptonic B decays Bbar --> X_u ell nubar, and the determination of the CKM matrix element |V_{ub}|. The analysis is based on a sample of 383 million Y(4S) decays into B Bbar pairs collected with the BaBar detector at the PEP-II e+ e- storage rings. We select events using either the invariant mass M_X of the hadronic system, the invariant mass squared, q^2, of the lepton and neutrino pair, the kinematic variable P_+ or one of their combinations. We then determine partial branching fractions in limited regions of phase space: Delta B = (1.18 +- 0.09_{stat.} +- 0.07_{syst.} +- 0.01_{theo.}) x 10^{-3} (M_X < 1.55 GeV/c^2), Delta B = (0.95 +- 0.10_{stat.} +- 0.08_{syst.} +- 0.01_{theo.}) x 10^{-3} (P_+ < 0.66 GeV/c), and Delta B = (0.81 +- 0.08_{stat.} +- 0.07_{syst.} +- 0.02_{theo.}) x 10^{-3} (M_X < 1.7 GeV/c^2, q^2 > 8 GeV^2/c^4). Corresponding values of |V_{ub}| are extracted using several theoretical calculations.
description: 7 pages, 4 postscript figures, accepted by PRL; this version contains changes requested by PRL referees, as well as a small bug fix
title: Etablierung von Ausschreibungs- und Wettbewerbsmechanismen im Rahmen von nationalen Open-Access-Zeitschriftenkonsortien: Beschreibung eines Pilotvorhabens
title: Establishing tender procedures and competition within the framework of national library consortia for open access journals: Description of a pilot project
titleType: AlternativeTitle
Creators: name: Schönfelder, Nina
name: Pieper, Dirk
Publisher: name: Bielefeld University
Year: 2020
Subjects: subject: 020
subject: Wissenschaftliches Publikationssystem
subject: Open Access
subject: SCOAP3
subject: Wettbewerb

description: OA2020-DE regt an, reine Open Access-Verträge und ggf. Vertragsbestandteile zu reinen Open-Access-Zeitschriften im Rahmen von Transformationsverträgen durch Ausschreibungen in geheimen Bieterverfahren, wie es von SCOAP3 praktiziert worden ist, zu schließen. Das folgende Konzept beschreibt die damit intendierten Ziele, die auszuschreibenden Services sowie einen Vorschlag zur organisatorischen Umsetzung.
ФИНАНСИРОВАНИЕ НАУЧНЫХ ИССЛЕДОВАНИЙ И РАЗРАБОТОК: СОСТОЯНИЕ И ПРЕДЛОЖЕНИЯ
Creators: name: ЛЕБЕДЕВА Д.В.
name: ДИГИЛИНА О.Б.
Publisher: name: Инновации и инвестиции
Year: 2021
Subjects: НАУЧНЫЕ ИССЛЕДОВАНИЕ И РАЗРАБОТКИ
ФИНАНСОВЫЕ РЕСУРСЫ
МАТЕРИАЛЬНО-ТЕХНИЧЕСКИЕ РЕСУРСЫ
ИНВЕСТИЦИОННЫЙ НАЛОГОВЫЙ ВЫЧЕТ
ЛЬГОТНОЕ НАЛОГООБЛОЖЕНИЕ
RESEARCH AND DEVELOPMENT
FINANCIAL RESOURCES
MATERIAL AND TECHNICAL RESOURCES
INVESTMENT TAX DEDUCTION
PREFERENTIAL TAXATION

description: В данной статье проведен анализ состояния финансирования экономического вида деятельности «Научные исследования и разработки» в Российской Федерации за период с 2010 по 2019 гг. Авторами выявлены проблемы в области обеспечения отрасли финансовыми ресурсами и предложены точечные меры развития данной деятельности, способствующие, по мнению авторов, увеличению объема инвестиций в инновационную деятельность Российской Федерации, обновлению материально-технической базы экономических субъектов и повышению интенсивности инновационных процессов. Данные меры необходимы для поддержания и укрепления глобальных конкурентных позиций Российской Федерации, стимулирования и развития ее инновационной деятельности, создания национальной инновационной системы (НИС) что в дальнейшем окажет позитивное воздействие на темпы социально-экономического развития, будет способствовать диверсификации экономики и обеспечит технологическую безопасность страны.
Unique reconstruction of simple magnetizations from their magnetic potential
Creators: name: Baratchart, L.
name: Gerhards, C.
name: Kegeles, A.
name: Menzel, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: Inverse problems arising in (geo)magnetism are typically ill-posed, in particular {they exhibit non-uniqueness}. Nevertheless, there exist nontrivial model spaces on which the problem is uniquely solvable. Our goal is here to describe such spaces that accommodate constraints suited for applications. In this paper we treat the inverse magnetization problem on a Lipschitz domain with fairly general topology. We characterize the subspace of $L^{2}$-vector fields that causes non-uniqueness, and identify a subspace of harmonic gradients on which the inversion becomes unique. This classification has consequences for applications and we present some of them in the context of geo-sciences. In the second part of the paper, we discuss the space of piecewise constant vector fields. This vector space is too large to make the inversion unique. But as we show, it contains a dense subspace in $L^2$ on which the problem becomes uniquely solvable, i.e., magnetizations from this subspace are uniquely determined by their magnetic potential.
German Word Embeddings for ShiCo based on historic newspapers
Creators: name: Riedl, Martin
Publisher: name: Zenodo
Year: 2019
Subjects: word embeddings
historic newspaper
Chronicling America
SBB
Europeana

description: We provide word embeddings models that have been computed on historic German newspapers. The models are computed for time spans of 10 years and can be used with ShiCo, a visualization tool for word embeddings.  We provide models for three different corpora and also have links to the ShiCo demos:

	SBB (State library of Berlin): Newspaper collection from Germany from 1872 to 1912 (demo).
	Chonicling America: German-written newspaper pages from 1840 to 1908 that have been published in the United States (demo).
	Europeana: German-written newspapers that have been published in Europe from 1840 to 1912 (demo).

For each model a configuration is required both for the frontend and the backend (see config.shico.tar.gz). In order to setup a ShiCo instance you can either follow the description of the ShiCo GitHub page or follow the instructions for running ShiCo using Docker as described in the README.docker.txt file.
Application of the Monte Carlo method to the estimation of the risk of failure of transmission line insulation
Creators: name: Leonard, Ronald William
Publisher: name: University of British Columbia
Year: 2010

description: A digital program has been developed which uses the Monte Carlo technique to estimate the risk of failure of transmission line insulation during system switching operations. The effect of overvoltage waveshape on insulation strength is included. A simple electrical system is used to demonstrate the method and to investigate some general aspects of error and parameter sensitivity.
ФОРМИРОВАНИЯ РЫНКА ПРИРОДНОГО ГАЗА ЕС
Creators: name: ДОРОШЕНКО О.В.
Publisher: name: Инновации и инвестиции
Year: 2021
Subjects: ИНТЕГРИРОВАННЫЙ ГАЗОВЫЙ РЫНОК
ГАЗПРОМ
СПГ
ДИВЕРСИФИКАЦИЯ
МЕХАНИЗМЫ ЦЕНООБРАЗОВАНИЯ
INTEGRATED GAS MARKET
GAZPROM
LNG
DIVERSIFICATION
PRICING MECHANISMS

description: Разработка «Целевой модели рынка газа» ЕС в рамках Третьего энергетического пакета дала ясное понимание, как должен выглядеть единый рынок газа и каким критериям должны отвечать страны ЕС для его формирования. Главная цель - создать интегрированный энергетический рынок. Данный стратегия смещает акценты на диверсификацию, гибкость, устойчивость, безопасность поставок и созданию конкурентной среды. Поскольку добыча в Северном море снижается из-за истощения месторождений, необходимо привлечь большее количество поставщиков, одновременно стараясь снизить зависимость от Российского газа, который в настоящее время является доминирующим сегментом.
Information theoretic bounds for Compressed Sensing
Creators: name: Aeron, Shuchin
name: Saligrama, Venkatesh
name: Zhao, Manqi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper we derive information theoretic performance bounds to sensing and reconstruction of sparse phenomena from noisy projections. We consider two settings: output noise models where the noise enters after the projection and input noise models where the noise enters before the projection. We consider two types of distortion for reconstruction: support errors and mean-squared errors. Our goal is to relate the number of measurements, $m$, and $\snr$, to signal sparsity, $k$, distortion level, $d$, and signal dimension, $n$. We consider support errors in a worst-case setting. We employ different variations of Fano's inequality to derive necessary conditions on the number of measurements and $\snr$ required for exact reconstruction. To derive sufficient conditions we develop new insights on max-likelihood analysis based on a novel superposition property. In particular this property implies that small support errors are the dominant error events. Consequently, our ML analysis does not suffer the conservatism of the union bound and leads to a tighter analysis of max-likelihood. These results provide order-wise tight bounds. For output noise models we show that asymptotically an $\snr$ of $Θ(\log(n))$ together with $Θ(k \log(n/k))$ measurements is necessary and sufficient for exact support recovery. Furthermore, if a small fraction of support errors can be tolerated, a constant $\snr$ turns out to be sufficient in the linear sparsity regime. In contrast for input noise models we show that support recovery fails if the number of measurements scales as $o(n\log(n)/SNR)$ implying poor compression performance for such cases. We also consider Bayesian set-up and characterize tradeoffs between mean-squared distortion and the number of measurements using rate-distortion theory.
description: 30 pages, 2 figures, submitted to IEEE Trans. on IT
Teichmuller geometry of moduli space, II: M(S) seen from far away
Creators: name: Farb, Benson
name: Masur, Howard
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: We construct a metric simplicial complex which is an almost isometric model of the moduli space M(S) of Riemann surfaces. We then use this model to compute the "tangent cone at infinity" of M(S): it is the topological cone on the quotient of the complex of curves C(S) by the mapping class group of S, endowed with an explicitly described metric. The main ingredient is Minsky's product regions theorem.
description: 9 pages, 1 figure. Replaced old (2008) version with 2009 version (which corrects and clarifies a few minor points)
Method for critical current angular dependencies analysis of superconducting tapes
Creators: name: Guryev, V. V.
name: Shavkin, S. V.
name: Kruglov, V. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Various applications of superconducting materials require accounting of anisotropy of the current-carrying capacity relative to magnetic field direction - Ic(θ). However, today there is no sufficiently comprehensive model that takes into account the anisotropy, therefore the angular dependences are usually not analysed, but only described using various mathematical formulas. As a result, the fitting parameters have no physical meaning and it is difficult to correlate the picture with the features of the microstructure. In this paper, we propose a method for analysing the critical current angular dependences based on the anisotropic pinning model. The applicability of this model for conventional superconducting Nb-Ti tapes with one peak in the Ic (θ) dependence is shown. The possibility of extending this model to analyse the angular dependences of HTS materials is discussed.
description: International Conference PhysicA.SPb/2021
HST/FGS Parallaxes of AM CVn Stars and Astrophysical Consequences
Creators: name: Roelofs, G. H. A.
name: Groot, P. J.
name: Benedict, G. F.
name: McArthur, B. E.
name: Steeghs, D.
name: Morales-Rueda, L.
name: Marsh, T. R.
name: Nelemans, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present absolute parallaxes and relative proper motions for five AM CVn stars, which we obtained using the Fine Guidance Sensors on board the Hubble Space Telescope. Our parallax measurements translate into distances d(AM CVn)=606+135-93 pc, d(HP Lib)=197+14-12 pc, d(CR Boo)=337+44-35 pc, d(V803 Cen)=347+32-27 pc, and d(GP Com)=75+2-2 pc. From these distances we estimate the space density of AM CVn stars and suggest that previous estimates have been too high by about an order of magnitude. We also infer the mass accretion rates which allows us to constrain the masses of the donor stars, and we show that relatively massive, semi-degenerate donor stars are favored in all systems except GP Com. Finally, we give updated estimates for their gravitational-wave signals, relevant for future space missions such as the proposed Laser Interferometer Space Antenna (LISA), based on their distances and the inferred masses of the binary components. We show that all systems but GP Com are excellent candidates for detection with LISA.
description: Accepted for publication in ApJ
Large Adaptive Optics Survey for Substellar Objects (LASSO) Around Young, Nearby, Low-mass Stars with Robo-AO
Creators: name: Salama, Maissa
name: Ou, James
name: Baranec, Christoph
name: Liu, Michael C.
name: Bowler, Brendan P.
name: Barnes, Paul
name: Bonnet, Morgan
name: Chun, Mark
name: Duev, Dmitry A.
name: Goebel, Sean
name: Hall, Don
name: Jacobson, Shane
name: Jensen-Clem, Rebecca
name: Law, Nicholas M.
name: Lockhart, Charles
name: Riddle, Reed
name: Situ, Heather
name: Warmbier, Eric
name: Zhang, Zhoujian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present results from the Large Adaptive optics Survey for Substellar Objects (LASSO), where the goal is to directly image new substellar companions (<70 M$_{Jup}$) at wide orbital separations ($\gtrsim$50 AU) around young ($\lesssim$300 Myrs), nearby (<100 pc), low-mass ($\approx$0.1-0.8 M$_{\odot}$) stars. We report on 427 young stars imaged in the visible (i') and near-infrared (J or H) simultaneously with Robo-AO on the Kitt Peak 2.1-m telescope and later the Maunakea University of Hawaii 2.2-m telescope. To undertake the observations, we commissioned a new infrared camera for Robo-AO that uses a low-noise high-speed SAPHIRA avalanche photodiode detector. We detected 121 companion candidates around 111 stars, of which 62 companions are physically associated based on Gaia DR2 parallaxes and proper motions, another 45 require follow-up observations to confirm physical association, and 14 are background objects. The companion separations range from 2-1101 AU and reach contrast ratios of 7.7 magnitudes in the near infrared compared to the primary. The majority of confirmed and pending candidates are stellar companions, with ~5 being potentially substellar and requiring follow-up observations for confirmation. We also detected a 43$\pm$9 M$_{Jup}$ and an 81$\pm$5 M$_{Jup}$ companion that were previously reported. We found 34 of our targets have acceleration measurements detected using Hipparcos-Gaia proper motions. Of those, 58$^{+12}_{-14}$% of the 12 stars with imaged companion candidates have significant accelerations ($χ^2 >11.8$), while only 23$^{+11}_{-6}$% of the remaining 22 stars with no detected companion have significant accelerations. The significance of the acceleration decreases with increasing companion separation. These young accelerating low-mass stars with companions will eventually yield dynamical masses with future orbit monitoring.
description: 44 pages: 20 pages of text with 14 figures, 24 pages of tables in the appendix. Accepted for publication in the Astronomical Journal
Tail states and unusual localization transition in low-dimensional Anderson model with power-law hopping
Creators: name: Tikhonov, Konstantin S.
name: Ioselevich, Alexey S.
name: Feigel'man, Mikhail V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study deterministic power-law quantum hopping model with an amplitude $J(r) \propto - r^{-β}$ and local Gaussian disorder in low dimensions $d=1,2$ under the condition $d < β< 3d/2$. We demonstrate unusual combination of exponentially decreasing density of the "tail states" and localization-delocalization transition (as function of disorder strength $w$) pertinent to a small (vanishing in thermodynamic limit) fraction of eigenstates. At sub-critical disorder $w < w_c$ delocalized eigenstates with energies near the bare band edge co-exist with a strongly localized eigenstates in the same energy window. At higher disorder $w > w_c$ all eigenstates are localized. In a broad range of parameters density of states $ν(E)$ decays into the tail region $E <0$ as simple exponential, $ ν(E) = ν_0 e^{E/E_0} $, while characteristic energy $E_0$ varies smoothly across edge localization transition. We develop simple analytic theory which describes $E_0$ dependence on power-law exponent $β$, dimensionality $d$ and disorder strength $W$, and compare its predictions with exact diagonalization results. At low energies within the bare "conduction band", all eigenstates are localized due to strong quantum interference at $d=1,2$; however localization length grows fast with energy decrease, contrary to the case of usual Schrodinger equation with local disorder.
Gamma-ray albedo of the moon
Creators: name: Moskalenko, Igor V.
name: Porter, Troy A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the GEANT4 Monte Carlo framework to calculate the gamma-ray albedo of the Moon due to interactions of cosmic ray (CR) nuclei with moon rock. Our calculation of the albedo spectrum agrees with the EGRET data. We show that the spectrum of gamma rays from the Moon is very steep with an effective cutoff around 4 GeV (600 MeV for the inner part of the Moon disc). Apart from other astrophysical sources, the albedo spectrum of the Moon is well understood, including its absolute normalisation; this makes it a useful "standard candle" for gamma-ray telescopes, such as the forthcoming Gamma Ray Large Area Space Telescope (GLAST). The albedo flux depends on the incident CR spectrum which changes over the solar cycle. Therefore, it is possible to monitor the CR spectrum using the albedo gamma-ray flux. Simultaneous measurements of CR proton and helium spectra by the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA), and observations of the albedo gamma rays by the GLAST Large Area Telescope (LAT), can be used to test the model predictions and will enable the GLAST LAT to monitor the CR spectrum near the Earth beyond the lifetime of PAMELA.
description: 4 pages, 3 figures. Contribution to the 30th ICRC, Merida, Mexico, 2007 (final version)
Reconstructive Spectrometer using Photonic Crystal Cavity
Creators: name: Sharma, Naresh
name: Kumar, Govind
name: Garg, Vivek
name: Mote, Rakesh G.
name: Gupta, Shilpi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Optical spectrometers have propelled scientific and technological advancements in a wide range of fields. While sophisticated systems with excellent performance metrics are serving well in controlled laboratory environments, many applications require systems that are portable, economical, and robust to optical misalignment. Here, we propose and demonstrate a spectrometer that uses a planar one-dimensional photonic crystal cavity as a dispersive element and a reconstructive computational algorithm to extract spectral information from spatial patterns. The simple fabrication and planar architecture of the photonic crystal cavity render our spectrometry platform economical and robust to optical misalignment. The reconstructive algorithm allows miniaturization and portability. The intensity transmitted by the photonic crystal cavity has a wavelength-dependent spatial profile. We generate the spatial transmittance function of the system using finite-difference time-domain method and also estimate the dispersion relation. The transmittance function serves as a transfer function in our reconstructive algorithm. We show accurate estimation of various kinds of input spectra. We also show that the spectral resolution of the system depends on the cavity linewidth that can be improved by increasing the number of periodic layers in distributed Bragg mirrors. Finally, we experimentally estimate the center wavelength and linewidth of the spectrum of an unknown light emitting diode. The estimated values are in good agreement with the values measured using a commercial spectrometer.
description: 10 pages, 10 main figures, 3 supplementary figures
Lookup tables to compute high energy cosmic ray induced atmospheric ionization and changes in atmospheric chemistry
Creators: name: Atri, Dimitra
name: Melott, Adrian L.
name: Thomas, Brian C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: A variety of events such as gamma-ray bursts and supernovae may expose the Earth to an increased flux of high-energy cosmic rays, with potentially important effects on the biosphere. Existing atmospheric chemistry software does not have the capability of incorporating the effects of substantial cosmic ray flux above 10 GeV . An atmospheric code, the NASA-Goddard Space Flight Center two-dimensional (latitude, altitude) time-dependent atmospheric model (NGSFC), is used to study atmospheric chemistry changes. Using CORSIKA, we have created tables that can be used to compute high energy cosmic ray (10 GeV - 1 PeV) induced atmospheric ionization and also, with the use of the NGSFC code, can be used to simulate the resulting atmospheric chemistry changes. We discuss the tables, their uses, weaknesses, and strengths.
description: In press: Journal of Cosmology and Astroparticle Physics. 6 figures, 3 tables, two associated data files. Major revisions, including results of a greatly expanded computation, clarification and updated references. In the future we will expand the table to at least EeV levels.
Lattice QCD Calculation of the $ρ$ Meson Decay Width
Creators: name: PACS Collaboration
name: Aoki, S.
name: Fukugita, M.
name: Ishikawa, K-I.
name: Ishizuka, N.
name: Kanaya, K.
name: Kuramashi, Y.
name: Namekawa, Y.
name: Okawa, M.
name: Sasaki, K.
name: Ukawa, A.
name: Yoshié, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a lattice QCD calculation of the $ρ$ meson decay width via the $P$-wave scattering phase shift for the I=1 two-pion system. Our calculation uses full QCD gauge configurations for $N_f=2$ flavors generated using a renormalization group improved gauge action and an improved Wilson fermion action on a $12^3\times24$ lattice at $m_π/m_ρ=0.41$ and the lattice spacing $1/a=0.92 {\rm GeV}$. The phase shift calculated with the use of the finite size formula for the two-pion system in the moving frame shows a behavior consistent with the existence of a resonance at a mass close to the vector meson mass obtained in spectroscopy. The decay width estimated from the phase shift is consistent with the experiment, when the quark mass is scaled to the realistic value.
description: LaTeX2e, 16 pages, 6 eps figures, uses revtex4 and graphicx
СОВРЕМЕННЫЕ ГЛОБАЛЬНЫЕ ТЕНДЕНЦИИ ЭКОНОМИКИ УСТОЙЧИВОГО РАЗВИТИЯ
Creators: name: ИВИНА Н.В.
name: ЗЕНКИНА Е.В.
Publisher: name: Инновации и инвестиции
Year: 2021
Subjects: ГЛОБАЛЬНЫЕ МИРОВЫЕ ТЕНДЕНЦИИ
УСТОЙЧИВОЕ РАЗВИТИЕ
ТЕХНОЛОГИЗАЦИЯ И ЦИФРОВИЗАЦИЯ
КАЧЕСТВО ЖИЗНИ
АЛЬТЕРНАТИВНАЯ ЭНЕРГЕТИКА
GLOBAL WORLD TRENDS
SUSTAINABLE DEVELOPMENT
TECHNOLOGIZATION AND DIGITALIZATION
QUALITY OF LIFE
ALTERNATIVE ENERGY

description: В данном исследовании проведен краткий обзор современных глобальных тенденций развития устойчивой экономики. Среди выделенных тенденций отмечены следующие: преобладание экономических интересов государств над политическими разногласиями, становление многополярности мира, быстрые темпы роста технологизации и цифровизации, их сращивание со всеми сферами жизнедеятельности, стремительное развитие IТ-сферы, формирование новых энергетических трендов на фоне структурной трансформации энергетических балансов, качественные методические изменения в сфере образования, демографические и экологические проблемы, а также охватившая всю Планету пандемия COVID-19. Отмечено, что в сложившихся условиях наблюдается стремление большинства стран к повышению уровня параметров устойчивого экономического роста, улучшению экологии и созданию сбалансированной устойчивой системы развития экономик.
Extremal metrics for spectral functions of Dirac operators in even and odd dimensions
Creators: name: Moller, Niels Martin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Spectral Theory (math.SP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58J52, 58J40

description: Let (M^n, g) be a closed smooth Riemannian spin manifold and denote by D its Atiyah-Singer-Dirac operator. We study the variation of Riemannian metrics for the zeta function and functional determinant of D^2, and prove finiteness of the Morse index at stationary metrics, and local extremality at such metrics under general, i.e. not only conformal, change of metrics. In even dimensions, which is also a new case for the conformal Laplacian, the relevant stability operator is of log-polyhomogeneous pseudodifferential type, and we prove new results of independent interest, on the spectrum for such operators. We use this to prove local extremality under variation of the Riemannian metric, which in the important example when (M^n, g) is the round n-sphere, gives a partial verification of Branson's conjecture on the pattern of extremals. Thus det(D^2) has a local (max, max, min, min) when the dimension is (4k, 4k + 1, 4k + 2, 4k + 3), respectively.
description: 45 pages; title and content edited to reflect subsequent related work
APCs—Mirroring the impact factor or legacy of the subscription-based model?
Creators: name: Schönfelder, Nina
Publisher: name: Universität Bielefeld
Year: 2018
Subjects: subject: 020
subject: 330
subject: article processing charge
subject: APC
subject: source normalized impact per paper
subject: SNIP
subject: open access
subject: multivariate regression
subject: hybrid journal
subject: OpenAPC

description: With the ongoing open-access transformation, article processing charges (APCs) are gaining importance as the dominant business model for scientific open-access journals. This paper analyzes which factors determine the level of an APC by means of multivariate linear regression. With data from OpenAPC, APCs actually paid are explained by the following variables: (1) the "source normalized impact per paper" (SNIP), (2) whether the journal is open access or hybrid, (3) the publisher of the journal, (4) the subject area of the journal, and (5) the year. The results show that the journal's impact and the hybrid status are the most important factors for the level of APCs. However, the relationship between APC and SNIP is different for open-access journals and hybrid journals. The journal's impact is crucial for the level of APCs in open-access journals, whereas it little alters APCs for publications in hybrid-journals. This paper contributes to the emerging literature initiated by the "Pay It Forward"-study conducted at the University of California Libraries. It sets the foundations for the assessment whether the large-scale open-access transformation of scientific journals is a financially viable way for each research institution in general and universities in particular.
Threshold production of meta-stable bound states of Kaluza Klein excitations in Universal Extra Dimensions
Creators: name: Fabiano, Nicola
name: Panella, Orlando
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the formation and detection at the next linear e^+e^- collider of bound states of level-1 quark Kaluza-Klein excitations B_KK within a scenario of universal extra-dimensions (UED). The interactions of such Kaluza-Klein excitations are modeled by an alpha_s driven Coulomb potential. In order to obtain the threshold cross-section, we employ the Green function method which is known to properly describe the peaks below threshold and to yield a net increase in the continuum region (above threshold) relative to the naive Born cross-section. We study such effect at different values of the scale (R^-1) of the extra-dimensions with an explicit calculation of the mass spectrum as given by radiative corrections. The overall effect is roughly 2.7 at R^-1=300 GeV and goes down to 2.2 at R^-1=1000 GeV and a relatively large number of events is expected from N_events ~ 2.5*10^4 at R^-1=300 GeV down to N_events ~ 10^3 at R^-1=1000 GeV at the anticipated annual integrated luminosity of L_0= 100 fb^-1. We finally discuss some potentially observable signatures such as the multilepton channels 2j + 2l + missing energy, and 2j + 4l + missing energy for which we estimate statistical significance >~ 2 for R^-1 up to 600 ~ 700 GeV.
description: Accepted for publication in Phys. Rev. D. Enhanced version. 13 pages, 5 figures, 2 tables
Molecular Dynamics of a kB DNA Element: Base Flipping via Cross-strand Intercalative Stacking in a Microsecond-scale Simulation
Creators: name: Mura, Cameron
name: McCammon, J. Andrew
Publisher: name: arXiv
Year: 2008
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: The sequence-dependent structural variability and conformational dynamics of DNA play pivotal roles in many biological milieus, such as in the site-specific binding of transcription factors to target regulatory elements. To better understand DNA structure, function, and dynamics in general, and protein-DNA recognition in the 'kB' family of genetic regulatory elements in particular, we performed molecular dynamics simulations of a 20-base pair DNA encompassing a cognate kB site recognized by the proto-oncogenic 'c-Rel' subfamily of NF-kB transcription factors. Simulations of the kB DNA in explicit water were extended to microsecond duration, providing a broad, atomically-detailed glimpse into the structural and dynamical behavior of double helical DNA over many timescales. Of particular note, novel (and structurally plausible) conformations of DNA developed only at the long times sampled in this simulation -- including a peculiar state arising at ~ 0.7 us and characterized by cross-strand intercalative stacking of nucleotides within a longitudinally-sheared base pair, followed (at ~ 1 us) by spontaneous base flipping of a neighboring thymine within the A-rich duplex. Results and predictions from the us-scale simulation include implications for a dynamical NF-kB recognition motif, and are amenable to testing and further exploration via specific experimental approaches that are suggested herein.
description: 21 pages, 9 figures; revised version has been updated to include figures
Mapping Spreadsheets to RDF: Supporting Excel in RML
Creators: name: Schröder, Markus
name: Jilek, Christian
name: Dengel, Andreas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: The RDF Mapping Language (RML) enables, among other formats, the mapping of tabular data as Comma-Separated Values (CSV) files to RDF graphs. Unfortunately, the widely used spreadsheet format is currently neglected by its specification and well-known implementations. Therefore, we extended one of the tools which is RML Mapper to support Microsoft Excel spreadsheet files and demonstrate its capabilities in an interactive online demo. Our approach allows to access various meta data of spreadsheet cells in typical RML maps. Some experimental features for more specific use cases are also provided. The implementation code is publicly available in a GitHub fork.
description: 6 pages, submitted to Second International Workshop on Knowledge Graph Construction
Isolate record for VAFB-ISO-660
Creators: name: Holloway, Corinne
Year: 1900
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory
subject: Mortar
valueUri: https://core.tdar.org/browse/material-type/177/mortar
subject: Chipped Stone
valueUri: https://core.tdar.org/browse/material-type/2/chipped-stone
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey

description: This document is the isolated find record for VAFB-ISO-660. The artifact is a mortar hopper.
D3/D7 holographic Gauge theory and Chemical potential
Creators: name: Ghoroku, Kazuo
name: Ishihara, Masafumi
name: Nakamura, Akihiro
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: N=2 supersymmetric Yang-Mills theory with flavor hypermultiplets at finite temperature and in the dS${}_4$ are studied for finite quark number density ($n_b$) by a dual supergravity background with non-trivial dilaton and axion. The quarks and its number density $n_b$ are introduced by embedding a probe D7 brane. We find a critical value of the chemical potential at the limit of $n_b=0$, and it coincides with the effective quark mass given in each theory for $n_b=0$. At this point, a transition of the D7 embedding configurations occurs between their two typical ones. The phase diagrams of this transition are shown in the plane of chemical potential versus temperature and cosmological constant for YM theory at finite temperature and in dS${}_4$ respectively. In this phase transition, the order parameter is considered as $n_b$. % and the critical value of the chemical potential This result seems to be reasonable since both theories are in the quark deconfinement phase.
description: 17 pages, 8 figures
Tomographic RF Spectroscopy of a Trapped Fermi Gas at Unitarity
Creators: name: Shin, Y.
name: Schunck, C. H.
name: Schirotzek, A.
name: Ketterle, W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present spatially resolved radio-frequency spectroscopy of a trapped Fermi gas with resonant interactions and observe a spectral gap at low temperatures. The spatial distribution of the spectral response of the trapped gas is obtained using in situ phase-contrast imaging and 3D image reconstruction. At the lowest temperature, the homogeneous rf spectrum shows an asymmetric excitation line shape with a peak at 0.48(4)$ε_F$ with respect to the free atomic line, where $ε_F$ is the local Fermi energy.
Isolate record for VAFB-ISO-648
Creators: name: Holloway, Corinne
Year: 1900
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory
subject: Chipped Stone
valueUri: https://core.tdar.org/browse/material-type/2/chipped-stone
subject: Chert
valueUri: https://core.tdar.org/browse/material-type/213/chert
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey

description: This document is the isolated find record for VAFB-ISO-648. The artifact is a Franciscan chert shatter.
Improving the Electoral Chances of Pacific Women through an Evidence-based Approach
Creators: name: Barbara, Julien
name: Baker, Kerryn
Publisher: name: Canberra, ACT: Dept. of Pacific Affairs, Research School of Pacific and Asian Studies, The Australian National University
Year: 2016

description: This report draws on discussions that occurred at a three-day workshop hosted by the Centre for Democratic Institutions (CDI) and State, Society and Governance in Melanesia Program (SSGM) at the Australian National University in Canberra in June 2016. The purpose of the workshop was to review the evidence base regarding lessons learned about successful campaigning, how women are positioned to run successful campaigns, and how development partners might enhance the effectiveness of support provided to women candidates by drawing on and responding to this evidence base. While the workshop focused on the Melanesian context — and Papua New Guinea (PNG), Solomon Islands and Vanuatu, in particular — it drew on lessons from other parts of the Pacific islands region and the findings of this synthesis report may be applicable more widely. The workshop was attended by a broad range of stakeholders, including campaign activists, women candidates, former and current sitting members of legislatures, development partners, NGOs, policymakers and academics from Melanesia and Australia. An annotated copy of the three-day workshop program is provided at Appendix A, with speaker names excluded. Discussions at the workshop were held on a Chatham House basis to encourage frank discussion. While the synthesis provided in this report draws on those discussions, this report reflects the analysis of the authors and should not be taken to reflect the views of attendees at the workshop. This report is supplemented by a series of framing papers which were presented at that workshop to inform focused workshop discussions and have been published as SSGM In Briefs in tandem with this report.
Isolate record for VAFB-ISO-686
Creators: name: Holloway, Corinne
Year: 1900
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory
subject: Chipped Stone
valueUri: https://core.tdar.org/browse/material-type/2/chipped-stone
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey

description: This document is the isolated find record for VAFB-ISO-686. The artifact is a cobble scraper.
Groebner-Shirshov bases for dialgebras
Creators: name: Bokut, L. A.
name: Chen, Yuqun
name: Liu, Cihua
Publisher: name: arXiv
Year: 2008
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16S15, 13P10, 17A32, 17A99

description: In this paper, we define the Gröbner-Shirshov basis for a dialgebra. The Composition-Diamond lemma for dialgebras is given then. As results, we give Gröbner-Shirshov bases for the universal enveloping algebra of a Leibniz algebra, the bar extension of a dialgebra, the free product of two dialgebras, and Clifford dialgebra. We obtain some normal forms for algebras mentioned the above.
description: 23 pages
LIONS AND POLAR BEARS AND GENDER ROLES, OH MY! The Treatment of Women and Femininity in C. S. Lewis’s Chronicles of Narnia and Philip Pullman’s His Dark Materials
Creators: name: Manning, Chloe
Publisher: name: The Australian National University
Year: 2018
Subjects: fantasy literature
literature
English
English literature
Children's literature
Young Adult literature
gender roles
femininity
feminism
fantasy
Lewis
C.S. Lewis
Narnia
Chronicles of Narnia
Pullman
Philip Pullman
His Dark Materials

description: From the earliest works of the genre, fantasy fiction has had a complicated relationship with gender and feminism. C. S. Lewis's The Chronicles of Narnia is seen by many as a prime example of fantasy's patriarchal roots, with its strong adherence to traditional gender roles and controversial treatment of the character Susan. In contrast, Philip Pullman's 'anti-Narnia' His Dark Materials is often cited as an instance of pro-feminist fantasy, due to its engaging heroine, compelling female villain, and large cast of secondary female characters. When situated within the workings of the wider fantasy genre, however, the two series' seemingly oppositional stances on women, femininity, and gender roles are called into question. Using close textual analysis, this thesis examines the contrasts and continuities in the portrayal of female characters between Lewis's The Chronicles of Narnia and Pullman’s His Dark Materials, in order to demonstrate how authors can unwittingly repeat patriarchal and misogynistic themes and narratives, even when their aim is to refute them.