cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cosmicflows-4: The Catalog of ~10000 Tully-Fisher Distances
Creators: name: Kourkchi, Ehsan
name: Tully, R. Brent
name: Eftekharzadeh, Sarah
name: Llop, Jordan
name: Courtois, Helene M.
name: Guinet, Daniel
name: Dupuy, Alexandra
name: Neill, James D.
name: Seibert, Mark
name: Andrews, Michael
name: Chuang, Juana
name: Danesh, Arash
name: Gonzalez, Randy
name: Holthaus, Alexandria
name: Mokelke, Amber
name: Schoen, Devin
name: Urasaki, Chase
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the distances of 9792 spiral galaxies lying within 15,000 km/s using the relation between luminosity and rotation rate of spiral galaxies. The sample is dominantly, but not exclusively, drawn from galaxies detected in the course of the ALFALFA HI survey with the Arecibo Telescope. Relations between \hi line widths and luminosity are calibrated at SDSS u, g, r, i, z bands and WISE W1 and W2 bands. By exploiting secondary parameters, particularly color indices, we address discrepancies between measured distances at different wave bands with unprecedented detail. We provide a catalog that includes reduced kinematic, photometric, and inclination parameters. We also describe a machine learning algorithm, based on the random forest technique that predicts the dust attenuation in spirals lacking infrared photometry. We determine a Hubble Constant value of H0 = 75.1+-0.2 (stat.), with potential systematics up to +-3 km/s/Mpc.
description: 46 pages, 46 figures, and 5 tables. Accepted for publication in The Astrophysical Journal
The Bar--Halo Interaction--I. From Fundamental Dynamics to Revised N-body Requirements
Creators: name: Weinberg, Martin D.
name: Katz, Neal
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Only through resonances can non-axisymmetric features such as spiral arms and bars exert torques over large scales and change the overall structure of a near-equilibrium galaxy. We describe the resonant interaction mechanism in detail and derive explicit criteria for the particle number required to simulate these dynamical processes accurately using N-body simulations and illustrate them with numerical experiments. To do this, we perform direct numerical solution of perturbation theory and make detailed comparisons with N-body simulations. The criteria include: sufficient particle coverage in phase space near the resonance and enough particles to minimize gravitational potential fluctuations that will change the dynamics of the resonant encounter. Some of our more surprising findings are as follows. First, the Inner-Lindblad-like resonance (ILR), responsible for coupling the bar to the central halo cusp, requires almost 10^9 equal mass particles within the virial radius for a Milky-Way-like bar in an NFW profile. Second, orbits that linger near the resonance receive more angular momentum than orbits that move through the resonance quickly. Small-scale fluctuations present in state-of-the-art particle-particle simulations can knock orbits out of resonance, preventing them from lingering and, thereby, decrease the torque. The required particle numbers are sufficiently high for scenarios of interest that apparent convergence in particle number is misleading: the convergence is in the noise-dominated regime. State-of-the-art simulations are not adequate to follow all aspects of secular evolution driven by the bar-halo interaction. We present a procedure to test the requirements for individual N-body codes for the actual problem of interest. [abridged]
description: 30 pages, 19 figures, submitted to Monthly Notices. For paper with figures at full resolution: http://www.astro.umass.edu/~weinberg/weinberg_katz_1.ps.gz
A converse to the Schwarz lemma for planar harmonic maps
Creators: name: Brevig, Ole Fredrik
name: Ortega-Cerdà, Joaquim
name: Seip, Kristian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: A sharp version of a recent inequality of Kovalev and Yang on the ratio of the $(H^1)^\ast$ and $H^4$ norms for certain polynomials is obtained. The inequality is applied to establish a sharp and tractable sufficient condition for the Wirtinger derivatives at the origin for harmonic self-maps of the unit disc which fix the origin.
description: One typo corrected. This paper has been accepted for publication in Journal of Mathematical Analysis and Applications
In-flight performance of the BLAST-TNG telescope platform
Creators: name: Coppi, Gabriele
name: Ade, Peter A. R.
name: Ashton, Peter C.
name: Austermann, Jason E.
name: Cox, Erin G.
name: Devlin, Mark J.
name: Dober, Bradley J.
name: Fanfani, Valentina
name: Fissel, Laura M.
name: Galitzki, Nicholas
name: Gao, Jiansong
name: Gordon, Samuel
name: Groppi, Christopher E.
name: Hilton, Gene C.
name: Hubmayr, Johannes
name: Klein, Jeffrey
name: Li, Dale
name: Lourie, Nathan P.
name: Lowe, Ian
name: Mani, Hamdi
name: Mauskopf, Philip
name: McKenney, Christopher
name: Nati, Federico
name: Novak, Giles
name: Pisano, Giampaolo
name: Romualdez, L. Javier
name: Sinclair, Adrian
name: Soler, Juan D.
name: Tucker, Carole
name: Ullom, Joel
name: Vissers, Michael
name: Wheeler, Caleb
name: Williams, Paul A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Next Generation Balloon-Borne Large Aperture Submillimeter Telescope (BLAST-TNG) was a unique instrument for characterizing the polarized submillimeter sky at high-angular resolution. BLAST-TNG flew from the Long Duration Balloon Facility in Antarctica in January 2020. Despite the short flight duration, the instrument worked very well and is providing significant information about each subsystem that will be invaluable for future balloon missions. In this contribution, we discuss the performance of telescope and gondola.
description: Submitted to SPIE Astronomical Telescopes + Instrumentation, Ground-based and Airborne Telescopes VIII
Development of highly radiopure NaI(Tl) scintillator for PICOLON dark matter search project
Creators: name: Fushimi, K.
name: Kanemitsu, Y.
name: Hirata, S.
name: Chernyak, D.
name: Hazama, R.
name: Ikeda, H.
name: Imagawa, K.
name: Ishiura, H.
name: Ito, H.
name: Kisimoto, T.
name: Kozlov, A.
name: Takemoto, Y.
name: Yasuda, K.
name: Ejiri, H.
name: Hata, K.
name: Iida, T.
name: Inoue, K.
name: Koga, M.
name: Nakamura, K.
name: Orito, R.
name: Shima, T.
name: Umehara, S.
name: Yoshida, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The highly radiopure NaI(Tl) was developed to search for particle candidates of dark matter. The optimized methods were combined to reduce various radioactive impurities. The $^{40}$K was effectively reduced by the re-crystallization method. The progenies of the decay chains of uranium and thorium were reduced by appropriate resins. The concentration of natural potassium in NaI(Tl) crystal was reduced down to 20 ppb. Concentrations of alpha-ray emitters were successfully reduced by appropriate selection of resin. The present concentration of thorium series and 226Ra were $1.2 \pm1.4$ $μ$Bq/kg and $13\pm4$ $μ$Bq/kg, respectively. No significant excess in the concentration of $^{210}$Pb was obtained, and the upper limit was 5.7 $μ$Bq/kg at 90% C. L. The achieved level of radiopurity of NaI(Tl) crystals makes construction of a dark matter detector possible.
description: 11 pages, 6 figures, accepted to Progress of Theoretical and Experimental Physics
The Shaman's Trance
Creators: name: Ochurte, Rufino
name: Mixco, Mauricio J.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: klb

description: See Kiliwa Texts: "When I have Donned My Crest of Stars" (University of Utah Press, 1983), p. 129 for transcription, segmentation, glossing, and translation of this story.
Supplementary material “Targeted Helping and Cooperation in Zoo-living Chimpanzees and Bonobos” from Targeted helping and cooperation in zoo-living chimpanzees and bonobos
Creators: name: Nolte, Suska
name: Call, Josep
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Method details and Result tables
Tensor electric polarizability of the deuteron in storage-ring experiments
Creators: name: Silenko, Alexander J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The tensor electric polarizability of the deuteron gives important information about spin-dependent nuclear forces. If a resonant horizontal electric field acts on a deuteron beam circulating into a storage ring, the tensor electric polarizability stimulates the buildup of the vertical polarization of the deuteron (the Baryshevsky effect). General formulas describing this effect have been derived. Calculated formulas agree with the earlier obtained results. The problem of the influence of tensor electric polarizability on spin dynamics in such a deuteron electric-dipole-moment experiment in storage rings has been investigated. Doubling the resonant frequency used in this experiment dramatically amplifies the Baryshevsky effect and provides the opportunity to make high-precision measurements of the deuteron's tensor electric polarizability.
description: 24 pages, LaTeX, final version
Low temperature carrier transport mechanism and photoconductivity of WSe2
Creators: name: Kaur, Manjot
name: Singh, Kulwinder
name: Chauhan, Ishant
name: Singh, Hardilraj
name: Sharma, Ram K
name: Vij, Ankush
name: Thakur, Anup
name: Kumar, Akshay
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This work reports the electrical transport and temperature-dependent photoconductivity in tungsten diselenide (WSe2) thin films. The electrical conductivity analysis shows the presence of the three regions with temperature variation. At lower temperatures (<190K), carriers become localized to small regions in the film due to the Mott hopping mechanism. The middle region (190 to 273 K) follows Seto parameters and obtained low barrier height (0.0873 eV) may be responsible for the improved carrier mobility. At higher temperature (>273K) region, thermally activated conduction is dominated with two activation energies of ~138 meV and 98 meV. The peaks obtained in photoluminescent analysis attributes to the presence of mid-bandgap states or defect states which play an important role in the photoconductivity of WSe2. The transient photoconductivity measurements show consistent temperature-dependent behaviour. The effect of light intensity and wavelength variation on the photoconductivity of WSe2 thin films is also discussed. The photocurrent is 1.19*10-5 A at 125 K while at 350 K it was observed to be 3.12*10-4 A. The light-on/off current cycles show that the current can recover to its initial state which points to the stable and outstanding reversible properties of the WSe2 thin film device to be used in photodetector applications.
description: 17 Pages, 5 Figures
Symmetric equilibrium of multi-agent reinforcement learning in repeated prisoner's dilemma
Creators: name: Usui, Yuki
name: Ueda, Masahiko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We investigate the repeated prisoner's dilemma game where both players alternately use reinforcement learning to obtain their optimal memory-one strategies. We theoretically solve the simultaneous Bellman optimality equations of reinforcement learning. We find that the Win-stay Lose-shift strategy, the Grim strategy, and the strategy which always defects can form symmetric equilibrium of the mutual reinforcement learning process amongst all deterministic memory-one strategies.
description: 29 pages, 6 figures
Isoholonomic Problem and Holonomic Quantum Computation
Creators: name: Tanimura, Shogo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Geometric phases accompanying adiabatic processes in quantum systems can be utilized as unitary gates for quantum computation. Optimization of control of the adiabatic process naturally leads to the isoholonomic problem. The isoholonomic problem in a homogeneous fiber bundle is formulated and solved completely.
description: 7 pages, Proceedings of International Conference on Topology in Ordered Phases organized by Hokkaido University in March 2005
Determining the Properties and Evolution of Red Galaxies from the Quasar Luminosity Function
Creators: name: Hopkins, Philip F.
name: Hernquist, Lars
name: Cox, Thomas J.
name: Robertson, Brant
name: Springel, Volker
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We study the link between quasars and the red galaxy population using a model for the self-regulated growth of supermassive black holes in mergers involving gas-rich galaxies. Using a model for quasar lifetimes and evolution motivated by hydrodynamical simulations of galaxy mergers, we de-convolve the observed quasar luminosity function at various redshifts to determine the rate of formation of black holes of a given final mass. Identifying quasar activity with the formation of spheroids in the framework of the merger hypothesis, this enables us to deduce the corresponding rate of formation of spheroids with given properties as a function of redshift. This allows us to predict, for the red galaxy population, the distribution of galaxy velocity dispersions, the mass function, mass density, star formation rates, the luminosity function in many observed wavebands (NUV, U, B, V, R, I, J, H, K), the total red galaxy number density and luminosity density, the distribution of colors as a function of magnitude and velocity dispersion for several different wavebands, the distribution of mass to light ratios vs. mass, the luminosity-size relations, and the typical ages and distribution of ages (formation redshifts) as a function of both mass and luminosity. For each of these quantities, we predict the evolution from redshift z=0-6. Each of our predictions agrees well with existing observations, without the addition of tunable parameters; the essential observational inputs come from the observed quasar luminosity function. These predictions are skewed by several orders of magnitude if we adopt simpler, traditional models of quasar lifetimes in which quasars turn on/off or follow simple exponential light curves, instead of the more complicated evolution implied by our simulations.
description: 28 pages, 22 figures, matches version accepted to ApJ
title: The transmission of monetary policy in the Lao People´s Democratic Republic
title: Die Transmission von Geldpolitik in der Demokratischen Volksrepublik Laos
Creators: name: Savannarideth, Vimaly
Publisher: name: Philipps-Universität Marburg
Year: 2015
Subjects: money-output
demand for money
Lao
Economics
Wirtschaft
Inflation , Zinsfuß
Laos
Granger-Kausalität
Granger-causality
Geldpolitik
interest rate
Geldnachfrage

description: The empirical results add to the
      literature on monetary policy in Laos with five important
      findings, which are: i) based on log-­levels estimation, we
      find that money Granger-­causes output, which lends support
      to the proposition that the BoL is likely to be successful in
      stabilizing the business cycle; ii) the investigation of the
      money demand function provides strong evidence that the
      demand function in Laos is stable which implies that the BoL
      is likely to be successful in controlling inflation by
      managing the money supply; iii) the results of the impulse
      response analysis find that the responses of retail interest
      rates to a change in the policy rate are very small, which
      suggest that the likelihood of the BoL using the interest
      rate channel to achieve the desired impact on real economy
      and inflation is limited at this time; iv) the investigation
      of inflation determinants suggests that real GDP, money
      supply and the exchange rate are important factors in
      explaining the price level in the long-­run and in
      particular, the money variable is significant in both the
      long and the short-­run, this supports the proposition that
      the BoL is likely to be successful in controlling inflation
      through the management of money supply; and lastly, v) the
      analysis using a monetary model of the exchange rate does not
      appear to be very useful in explaining the fundamental forces
      that drive the exchange rate between the Lao Kip and U.S.
      dollar. Based on some of the findings, it is encouraging to
      know that through monetary policy, the central bank, if it
      chooses to, may be successful in stabilizing the business
      cycle and controlling inflation. This would support the
      government’s objective of achieving a target output growth of
      8 percent and inflation to be under 2 digits. This further
      emphasizes the importance of monetary policy in the
      management of Laos’ economic environment.
description: Aufgrund einiger der Erkenntnisse
      ist es ermutigend zu wissen, dass die Zentralbank, sollte sie
      sich dafür entscheiden, durch Geldpolitik erfolgreich die
      Konjunktur stabilisieren und die Inflation steuern könnte.
      Dies würde der Regierung dabei helfen, das anvisierte
      Produktionswachstum von acht Prozent und einstellige
      Inflation zu erreichen. Dies betont nochmalig die Bedeutung
      von Geldpolitik in der Handhabung der Wirtschaft von
      Laos.
Fractional Sums and Euler-like Identities
Creators: name: Mueller, Markus
name: Schleicher, Dierk
Publisher: name: arXiv
Year: 2005
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33-99, 40-99, 40A25, 41A05

description: We introduce a natural definition for sums of the form \[ \sum_{ν=1}^x f(ν) \] when the number of terms x is a rather arbitrary real or even complex number. The resulting theory includes the known interpolation of the factorial by the gamma function or Euler's little-known formula \sum_{ν=1}^{-1/2} \frac 1ν= -2\ln 2. Many classical identities like the geometric series and the binomial theorem nicely extend to this more general setting. Sums with a fractional number of terms are closely related to special functions, in particular the Riemann and Hurwitz zeta functions. A number of results about fractional sums can be interpreted as classical infinite sums or products or as limits, including identities like \[ \lim_{n\to\infty}[ e^{\frac n 4(4n+1)}n^{-\frac 1 8 - n(n+1)}(2π)^{-\frac n 2} \prod_{k=1}^{2n} Γ(1+\frac k 2)^{k(-1)^k} ] = \sqrt[12]{2} \exp({5/24} - \frac 3 2 ζ'(-1) -\frac{7ζ(3)}{16π^2}) \] some of which seem to be new.
description: 19 pages; inserted a more interesting example of a limit identity
Tortoise-Carapace Symbolism
Creators: name: Ochurte, Rufino
name: Mixco, Mauricio J.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: klb

description: See Kiliwa Texts: "When I have Donned My Crest of Stars" (University of Utah Press, 1983), p. 128 for transcription, segmentation, glossing, and translation of these stories.
HAT-P-68b: A Transiting Hot Jupiter Around a K5 Dwarf Star
Creators: name: Lindor, Bethlee M.
name: Hartman, Joel D.
name: Bakos, Gáspár Á.
name: Bhatti, Waqas
name: Csubry, Zoltan
name: Penev, Kaloyan
name: Bieryla, Allyson
name: Latham, David W.
name: Torres, Guillermo
name: Buchhave, Lars A.
name: Kovács, Géza
name: de Val-Borro, Miguel
name: Howard, Andrew W.
name: Isaacson, Howard
name: Fulton, Benjamin J.
name: Boisse, Isabelle
name: Santerne, Alexandre
name: Hébrard, Guillaume
name: Kovács, Támás
name: Huang, Chelsea X.
name: Dembicky, Jack
name: Falco, Emilio
name: Everett, Mark E.
name: Horch, Elliott P.
name: Lázár, József
name: Papp, István
name: Sári, Pál
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the discovery by the ground-based HATNet survey of the transiting exoplanet HAT-P-68b, which has a mass of 0.724 $\pm$ 0.043 $M_{Jup}$, and radius of 1.072 $\pm$ 0.012 $R_{Jup}$. The planet is in a circular P = 2.2984-day orbit around a moderately bright V = 13.937 $\pm$ 0.030 magnitude K dwarf star of mass 0.673 $+$ 0.020 $-$0.014 $M_{\odot}$, and radius 0.6726 $\pm$ 0.0069 $R_{\odot}$. The planetary nature of this system is confirmed through follow-up transit photometry obtained with the FLWO~1.2m telescope, high-precision RVs measured using Keck-I/HIRES, FLWO~1.5m/TRES, and OHP~1.9m/Sophie, and high-spatial-resolution speckle imaging from WIYN~3.5m/DSSI. HAT-P-68 is at an ecliptic latitude of $+3^{\circ}$ and outside the field of view of both the NASA TESS primary mission and the K2 mission. The large transit depth of 0.036 mag ($r$-band) makes HAT-P-68b a promising target for atmospheric characterization via transmission spectroscopy.
description: submitted to AJ on October 1, 2020; accepted on October 27. 15 pages, 8 figures, 6 tables
Detecting unexploded ordnance with time domain electromagnetic induction
Creators: name: Pasion, Leonard Rodriguez
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis I assume that the Time Domain Electromagnetic (TEM) response of a buried axisymmetric metallic object can be modelled as the sum of two dipoles centered at the midpoint of the body. The strength of the dipoles depends upon the relative orientation between the object and the source field, and also upon the shape and physical properties of the body. Upon termination of the source field, each dipole is assumed to decay as k (t + α)-β e-t/γ. The parameters k, α, β and γ depend upon the conductivity, permeability, size and shape of the object, and these can be extracted from field or laboratory measurements by using a nonlinear parametric inversion algorithm. An investigation carried out using an analytic solution for a sphere and laboratory measurements of steel and aluminum rectangular prisms, suggest the following methodology. The value of β might be used as a diagnostic to assess whether the metallic object is non-magnetic or magnetic. If the object is thought to be magnetic, then the ratios of k1/k2 and β1/β2 are diagnostic indicators as to whether the geometry is plate-like (uninteresting) or rod-like (a high candidate for being a UXO). [Scientific formulae used in this abstract could not be reproduced.]
Machine-learning physics from unphysics: Finding deconfinement temperature in lattice Yang-Mills theories from outside the scaling window
Creators: name: Boyda, D. L.
name: Chernodub, M. N.
name: Gerasimeniuk, N. V.
name: Goy, V. A.
name: Liubimov, S. D.
name: Molochkov, A. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Machine Learning (cs.LG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study the machine learning techniques applied to the lattice gauge theory's critical behavior, particularly to the confinement/deconfinement phase transition in the SU(2) and SU(3) gauge theories. We find that the neural network, trained on lattice configurations of gauge fields at an unphysical value of the lattice parameters as an input, builds up a gauge-invariant function, and finds correlations with the target observable that is valid in the physical region of the parameter space. In particular, if the algorithm aimed to predict the Polyakov loop as the deconfining order parameter, it builds a trace of the gauge group matrices along a closed loop in the time direction. As a result, the neural network, trained at one unphysical value of the lattice coupling $β$ predicts the order parameter in the whole region of the $β$ values with good precision. We thus demonstrate that the machine learning techniques may be used as a numerical analog of the analytical continuation from easily accessible but physically uninteresting regions of the coupling space to the interesting but potentially not accessible regions.
description: 9 pages, 14 figures; v2: discussions added
Quantum Trajectories, State Diffusion and Time Asymmetric Eventum Mechanics
Creators: name: Belavkin, V. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show that the quantum stochastic unitary dynamics Langevin model for continuous in time measurements provides an exact formulation of the Heisenberg uncertainty error-disturbance principle. Moreover, as it was shown in the 80's, this Markov model induces all stochastic linear and non-linear equations of the phenomenological "quantum trajectories" such as quantum state diffusion and spontaneous localization by a simple quantum filtering method. Here we prove that the quantum Langevin equation is equivalent to a Dirac type boundary-value problem for the second-quantized input "offer waves from future" in one extra dimension, and to a reduction of the algebra of the consistent histories of past events to an Abelian subalgebra for the "trajectories of the output particles". This result supports the wave-particle duality in the form of the thesis of Eventum Mechanics that everything in the future is constituted by quantized waves, everything in the past by trajectories of the recorded particles. We demonstrate how this time arrow can be derived from the principle of quantum causality for nondemolition continuous in time measurements.
description: 21 pages. See also relevant publications at http://www.maths.nott.ac.uk/personal/vpb/publications.html
Index for J. William Hunt's "Across the Desk"
Creators: name: Price, MaryJo A.
Publisher: name: Maryland Shared Open Access Repository
Year: 2002

description: The index is for the articles written by J. William Hunt (1892-1968) and included in the Sunday edition of the Cumberland newspaper. Each entry includes all the dates for the column(s) on that subject. There may be multiple dates if there were multiple columns addressing the subject. The date is by day - month - year. The index can also be used for the Cumberland Evening Times. The index corresponds to the date of the article in the newspaper.
description: http://catalog.umd.edu/docno=002664485
Performance Monitoring of a Highway Tieback Wall
(I 71, Carroll County, KY 227, Corrective Landslide Measure)
Creators: name: Meade, Bobby W.
name: Allen, David L.
name: Hopkins, Tommy C.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1986
Subjects: subject: Transportation Engineering

description: A tieback wall was used to control an earth slide on KY 227 in Carroll County. Herein is contained a description of the wall construction and problems encountered during construction. Also included are descriptions of materials used and wall components.  The short-term wall performance indicates the tieback wall has controlled the earth slide and, to date, is a satisfactory solution. Long-term monitoring of the tieback wall will continue.
Consistency of supersymmetric 't Hooft anomalies
Creators: name: Bzowski, Adam
name: Festuccia, Guido
name: Procházka, Vladimír
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider recent claims that supersymmetry is anomalous in the presence of a R-symmetry anomaly. We revisit arguments that such an anomaly in supersymmetry can be removed and write down an explicit counterterm that accomplishes it. Removal of the supersymmetry anomaly requires enlarging the corresponding current multiplet. As a consequence the Ward identities for other symmetries that are already anomalous acquire extra terms. This procedure can only be impeded when the choice of current multiplet is forced. We show how Wess-Zumino consistency conditions are modified when the anomaly is removed. Finally we check that the modified Wess-Zumino consistency conditions are satisfied, and supersymmetry unbroken, in an explicit one loop computation using Pauli-Villars regulators. To this end we comment on how to use Pauli-Villars to regulate correlators of components of (super)current multiplets in a manifestly supersymmetric way.
description: 47 pages + appendices; v2: typos fixed, references added
Lorentz Invariance Violation Limits from the Spectral Lag Transition of GRB~190114C
Creators: name: Du, Shen-Shi
name: Lan, Lin
name: Wei, Jun-Jie
name: Zhou, Zi-Ming
name: Gao, He
name: Jiang, Lu-Yao
name: Zhang, Bin-Bin
name: Liu, Zi-Ke
name: Wu, Xue-Feng
name: Liang, En-Wei
name: Zhu, Zong-Hong
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The spectral lags of gamma-ray bursts (GRBs) have been viewed as the most promising probes of the possible violations of Lorentz invariance (LIV). However, these constraints usually depend on the assumption of the unknown intrinsic time lag in different energy bands and the use of a single highest-energy photon. A new approach to test the LIV effects has been proposed by directly fitting the spectral lag behavior of a GRB with a well-defined transition from positive lags to negative lags. This method simultaneously provides a reasonable formulation of the intrinsic time lag and robust lower limits on the quantum-gravity energy scales ($E_{\rm QG}$). In this work, we perform a global fitting to the spectral lag data of GRB~190114C by considering the possible LIV effects based on a Bayesian approach. We then derive limits on $E_{\rm QG}$ and the coefficients of the Standard Model Extension. The Bayes factors output in our analysis shows a very strong evidence for the spectral-lag transition in GRB~190114C. Our constraints on a variety of isotropic and anisotropic coefficients for LIV are somewhat weaker than existing bounds, but they can be viewed as comparatively robust and have the promise to complement existing LIV constraints. The observations of GRBs with higher-energy emissions and higher temporal resolutions will contribute to a better formulation of the intrinsic time lag and more rigorous LIV constraints in the dispersive photon sector.
description: 13 pages, 6 figures, 2 tables, the version accepted for publication in the Astrophysical Journal (ApJ)
Investigating the genetic diversity, population structure and archaic admixture history in worldwide human populations using high-coverage genomes
Creators: name: Hui, Ruoyun
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: population genetics
human genetics
archaic introgression
human genome diversity project

description: I present the analysis on 929 high-coverage (>30x) genomes from the Human Genome Diversity Project (HGDP) panel, a collection of cell lines from 54 populations across the world. Some data processing steps were necessary for downstream analysis, including lifting over resources on a different reference genome assembly, annotating the genome, and statistical phasing. Genome-wide genetic diversity conforms with previous studies using SNP arrays and microsatellites, yet haplotype information reveals fine scale structures and recent demographic history that vary between populations. This dataset also provides a valuable opportunity to explore the diversity and distribution of archaic segments in modern human populations. I implemented a hidden Markov model to detect such segments, based on patterns of allele-sharing with sequenced archaic genomes and a sub-Saharan African control panel. I also compared several variants of the model and different training methods using simulated data. Applying the model on the HGDP dataset using two Neanderthal genomes and one Denisova genome, I detected variations in the level of archaic ancestry across continental regions, populations, and individuals within each population. I further compared Neanderthal and Denisovan segments regarding their lengths, genomic distribution, divergence to the archaic genomes, nucleotide diversity, and haplotype networks to shed light on the structure of the admixture events. Neanderthal segments from all non-African populations appear largely homogeneous after accounting for the recent demographic history of modern human populations, which is consistent with a single admixture event that happened before they diverged from each other. In contrast, a distinct separation exists between Denisovan haplotypes recovered from Oceania and those from East/South Asia, whilst the complicated structure in the latter cannot be explained by a single source of gene flow. Therefore I propose that more than one episode of admixture with different Denisova groups occurred in the ancestral population of present-day East Asian, South Asian and American populations after the separation from the ancestors of present-day Oceanians, and that a separate admixture event occurred between the ancestors of Oceanians and the Denisova population.
description: Gates Cambridge
Evaluation of I-75 Lane Closures
Creators: name: Pigman, Jerry G.
name: Agent, Kenneth R.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1986
Subjects: subject: Transportation Engineering

description: A project on I 75 in Whitley and Laurel Counties during the 1986 construction season involved numerous lane closures associated with spot pavement replacement and joint sealing. Traffic congestion associated with heavy volumes and late merges resulted in the use of the following traffic control devices to supplement standard lane closure devices; 1) variable message signs, 2) supplemental lane closure warning signs, and 3) rumble strips placed in the lane to be closed in advance of the taper.  Results showed a decrease in the percentage of traffic in the lane to be closed with each successive traffic control device in addition to the standard lane closure devices. There was a general decrease in speeds as traffic approached the taper. The percentage of trucks in the lane to be closed was lower than the percentage in the open lane when the closure was a left lane. Hourly traffic volumes observed in this study (800 to 1,300 vph) did not appear to influence the percentage of traffic in the lane to be closed. The percentage of trucks in both lanes (8.5 to 14.7 percent) did not influence the percentage of traffic in the lane to be closed.  Recommendations from the study included the following: 1) supplemental signs for all long-term closures in high-volume, high-speed, four-lane roadways; 2) variable message signs when one-way hourly volumes exceed 1,000 (ADT exceeds 20,000); and 3) application of rumble strips when other devices do not reduce late merges and there is excessive congestion.
The self-energy of the uniform electron gas in the second order of exchange
Creators: name: Ziesche, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The on-shell self-energy of the homogeneous electron gas in second order of exchange, $Σ_{2{\rm x}}= {\rm Re} Σ_{2{\rm x}}(k_{\rm F},k_{\rm F}^2/2)$, is given by a certain integral. This integral is treated here in a similar way as Onsager, Mittag, and Stephen [Ann. Physik (Leipzig) {\bf 18}, 71 (1966)] have obtained their famous analytical expression $e_{2{\rm x}}={1/6}\ln 2- 3\frac{ζ(3)}{(2π)^2}$ (in atomic units) for the correlation energy in second order of exchange. Here it is shown that the result for the corresponding on-shell self-energy is $Σ_{2{\rm x}}=e_{2{\rm x}}$. The off-shell self-energy $Σ_{2{\rm x}}(k,ω)$ correctly yields $2e_{2{\rm x}}$ (the potential component of $e_{2{\rm x}}$) through the Galitskii-Migdal formula. The quantities $e_{2{\rm x}}$ and $Σ_{2{\rm x}}$ appear in the high-density limit of the Hugenholtz-van Hove (Luttinger-Ward) theorem.
description: 12 pages, 2 figures
Physical Constraints on Motility with Applications to Possible Life on Mars and Enceladus
Creators: name: Lingam, Manasvi
name: Loeb, Abraham
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Biological Physics (physics.bio-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Motility is a ubiquitous feature of microbial life on Earth, and is widely regarded as a promising biosignature candidate. In the search for motile organisms, it is therefore valuable to have rough estimates for the number of such microbes that one may expect to find in a given area or volume. In this work, we explore this question by employing a simple theoretical model that takes into account the amount of free energy available in a given environment and the energetic cost of motility. We present heuristic upper bounds for the average biomass density and the number density of motile lifeforms for the Martian subsurface and the ocean of Enceladus by presuming that the motile microbes in question derive their energy from methanogenesis. We consequently demonstrate that the resultant densities of motile organisms might be potentially comparable to, or much lower than, the total microbial densities documented in various extreme environments on Earth.
description: Published in The Planetary Science Journal; 8 pages; 3 figures
On the possibility of measuring the post-Newtonian gravitoelectric correction to the orbital period of a test body in a Solar System scenario
Creators: name: Iorio, Lorenzo
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The possibility of measuring the post-Newtonian gravitoelectric correction to the orbital period of a test particle freely orbiting a spherically symmetric mass in the Solar System is analyzed. It should be possible, in principle, to detect it for Mercury at a precision level of 10^-4. This level is mainly set by the unavoidable systematic errors due to the mismodelling in the Keplerian period which could not be reduced by accumulating a large number of orbital revolutions. Future missions like Messenger and BepiColombo should allow to improve it by increasing our knowledge of the Mercury's orbital parameters. The observational accuracy is estimated to be 10^-4 from the knowledge of the International Celestial Reference Frame (ICRF) axes. It could be improved by observing as many planetary transits as possible. It is not possible to measure such an effect in the gravitational field of the Earth by analyzing the motion of artificial satellites or the Moon because of the unavoidable systematic errors related to the uncertainties in the Keplerian periods. In the case of some recently discovered exoplanets the problems come from the observational errors which are larger than the relativistic effect.
description: LateX2e, 5 pages, two-column, no figures, 1 table, 22 references. Accepted for publication in Monthly Notices of the Royal Astronomical Society (MNRAS)
Determinant formulas for the five-vertex model
Creators: name: Burenev, Ivan N.
name: Pronko, Andrei G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the five-vertex model on a finite square lattice with fixed boundary conditions such that the configurations of the model are in a one-to-one correspondence with the boxed plane partitions (3D Young diagrams which fit into a box of given size). The partition function of an inhomogeneous model is given in terms of a determinant. For the homogeneous model, it can be given in terms of a Hankel determinant. We also show that in the homogeneous case the partition function is a $τ$-function of the sixth Painlevé equation with respect to the rapidity variable of the weights.
description: 32 pages, 5 figures; v2: misprints corrected
Cluster Monte Carlo Algorithms for Dissipative Quantum Systems
Creators: name: Werner, Philipp
name: Troyer, Matthias
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We review efficient Monte Carlo methods for simulating quantum systems which couple to a dissipative environment. A brief introduction of the Caldeira-Leggett model and the Monte Carlo method will be followed by a detailed discussion of cluster algorithms and the treatment of long-range interactions. Dissipative quantum spins and resistively shunted Josephson junctions will be considered.
description: to be publushed in Proceedings of the Yukawa Symposium 2004
Lengthscales and Cooperativity in DNA Bubble Formation
Creators: name: Rapti, Z.
name: Smerzi, A.
name: Rasmussen, K. Ø.
name: Bishop, A. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: It appears that thermally activated DNA bubbles of different sizes play central roles in important genetic processes. Here we show that the probability for the formation of such bubbles is regulated by the number of soft AT pairs in specific regions with lengths which at physiological temperatures are of the order of (but not equal to) the size of the bubble. The analysis is based on the Peyrard- Bishop-Dauxois model, whose equilibrium statistical properties have been accurately calculated here with a transfer integral approach.
A multi-scale DNN algorithm for nonlinear elliptic equations with multiple scales
Creators: name: Li, Xi-An
name: Xu, Zhi-Qin John
name: Zhang, Lei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Algorithms based on deep neural networks (DNNs) have attracted increasing attention from the scientific computing community. DNN based algorithms are easy to implement, natural for nonlinear problems, and have shown great potential to overcome the curse of dimensionality. In this work, we utilize the multi-scale DNN-based algorithm (MscaleDNN) proposed by Liu, Cai and Xu (2020) to solve multi-scale elliptic problems with possible nonlinearity, for example, the p-Laplacian problem. We improve the MscaleDNN algorithm by a smooth and localized activation function. Several numerical examples of multi-scale elliptic problems with separable or non-separable scales in low-dimensional and high-dimensional Euclidean spaces are used to demonstrate the effectiveness and accuracy of the MscaleDNN numerical scheme.
description: 23 papers,11 figures
Valuations in algebraic field extensions
Creators: name: Govantes, F. J. Herrera
name: Acosta, M. A. Olalla
name: Spivakovsky, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Let $K\to L$ be an algebraic field extension and $ν$ a valuation of $K$. The purpose of this paper is to describe the totality of extensions $\left\{ν'\right\}$ of $ν$ to $L$ using a refined version of MacLane's key polynomials. In the basic case when $L$ is a finite separable extension and $rk ν=1$, we give an explicit description of the limit key polynomials (which can be viewed as a generalization of the Artin--Schreier polynomials). We also give a realistic upper bound on the order type of the set of key polynomials. Namely, we show that if $char K=0$ then the set of key polynomials has order type at most $\mathbb N$, while in the case $char K=p>0$ this order type is bounded above by $([\log_pn]+1)ω$, where $n=[L:K]$. Our results provide a new point of view of the the well known formula $\sum\limits_{j=1}^se_jf_jd_j=n$ and the notion of defect.
Creation of the Moleskin Sky
Creators: name: Ochurte, Rufino
name: Mixco, Mauricio J.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: klb

description: See Kiliwa Texts: "When I have Donned My Crest of Stars" (University of Utah Press, 1983), p. 38 for transcription, segmentation, glossing, and translation of this story.
Models for Quadratic Algebras Associated with Second Order Superintegrable Systems in 2D
Creators: name: Kalnins, Ernest G.
name: Miller, Willard
name: Post, Sarah
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: There are 13 equivalence classes of 2D second order quantum and classical superintegrable systems with nontrivial potential, each associated with a quadratic algebra of hidden symmetries. We study the finite and infinite irreducible representations of the quantum quadratic algebras though the construction of models in which the symmetries act on spaces of functions of a single complex variable via either differential operators or difference operators. In another paper we have already carried out parts of this analysis for the generic nondegenerate superintegrable system on the complex 2-sphere. Here we carry it out for a degenerate superintegrable system on the 2-sphere. We point out the connection between our results and a position dependent mass Hamiltonian studied by Quesne. We also show how to derive simple models of the classical quadratic algebras for superintegrable systems and then obtain the quantum models from the classical models, even though the classical and quantum quadratic algebras are distinct.
description: This is a contribution to the Proc. of the Seventh International Conference ''Symmetry in Nonlinear Mathematical Physics'' (June 24-30, 2007, Kyiv, Ukraine), published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
The fate of the conformal order
Creators: name: Buchel, Alex
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use holographic correspondence to study transport of the conformal plasma in ${\mathbb R}^{2,1}$ in a phase with a spontaneously broken global $Z_2$ symmetry. The dual black branes in a Poincare patch of asymptotically $AdS_4$ have "hair" -- a condensate of the order parameter for the broken symmetry. This hair affects both the hydrodynamic and the nonhydrodynamic quasinormal modes of the black branes. Nonetheless, the shear viscosity of the conformal order is universal, the bulk viscosity vanishes and the speed of the sound waves is $c_s^2=\frac 12$. We compute the low-lying spectrum of the non-hydrodynamic modes. We identify a quasinormal mode associated with the fluctuations of the $Z_2$ order parameter with the positive imaginary part. The presence of this mode in the spectrum renders the holographic conformal order perturbatively unstable. Correspondingly, the dual black branes violate the correlated stability conjecture.
description: 34 pages, 13 figures; v2: PRD version