cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Surface Brightness and Intrinsic Luminosity of Ellipticals
Creators: name: Dhar, Barun Kumar
name: Williams, Liliya L. R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: {Abridged} We show that the surface brightness (SB) profiles of elliptical galaxies can be parametrized using a linear superposition of 2-3 components, described by functions developed in Dhar & Williams as the 2D projections of a 3D Einasto profile. For a sample of 23 ellipticals with -24 < Mv < -15, our multi-component models span a range of up to 10^6 in SB and 10^5 in radius, have a median rms of 0.032 mag arcsec^-2, and are statistically justified at >3σ. Our models indicate that i) the central component is more concentrated than the outer component; and ii) the central component of 'core' galaxies is much more luminous, extended and concentrated than that of 'cuspy' galaxies, with their near exponential central profiles indicating disk-like systems whose existence must be verified spectroscopically. While such central excess components are not necessarily contrary to the notion of a mass deficit in 'core' galaxies, we show that the existence, amount, radial extent and sign of mass deficits disagree substantially in the literature, both for a given galaxy and on an average over a sample. We discuss possible implications and suggest that SMBH binaries are unlikely to be the sole mechanism for producing the large 'cores'. We also deduce conditions under which the 3D light density can be described with a multi-component Einasto model for both cuspy and core galaxies; indicating an universality in the functional form of the 3D density of light in galaxies and dark matter in LCDM N-body haloes. Finally, we show that our result - the outer component of the SB profiles of massive galaxies has 5 < n < 8 - could imply i) a common feature of collisionless systems; and ii) that galaxies with such n for their outer component are dark matter dominated.
description: Accepted to MNRAS 12th December, 2011 (40 pages, 39 figures); in original form 2nd June, 2011
Antihydrogen and mirror-trapped antiproton discrimination: Discriminating between antihydrogen and mirror-trapped antiprotons in a minimum-B trap
Creators: name: Amole, C.
name: Andresen, G. B.
name: Ashkezari, M. D.
name: Baquero-Ruiz, M.
name: Bertsche, W.
name: Butler, E.
name: Cesar, C. L.
name: Chapman, S.
name: Charlton, M.
name: Deller, A.
name: Eriksson, S.
name: Fajans, J.
name: Friesen, T.
name: Fujiwara, M. C.
name: Gill, D. R.
name: Gutierrez, A.
name: Hangst, J. S.
name: Hardy, W. N.
name: Hayden, M. E.
name: Humphries, A. J.
name: Hydomako, R.
name: Kurchaninov, L.
name: Jonsell, S.
name: Madsen, N.
name: Menary, S.
name: Nolan, P.
name: Olchanski, K.
name: Olin, A.
name: Povilus, A.
name: Pusa, P.
name: Robicheaux, F.
name: Sarid, E.
name: Silveira, D. M.
name: So, C.
name: Storey, J. W.
name: Thompson, R. I.
name: van der Werf, D. P.
name: Wurtele, J. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Recently, antihydrogen atoms were trapped at CERN in a magnetic minimum (minimum-B) trap formed by superconducting octupole and mirror magnet coils. The trapped antiatoms were detected by rapidly turning off these magnets, thereby eliminating the magnetic minimum and releasing any antiatoms contained in the trap. Once released, these antiatoms quickly hit the trap wall, whereupon the positrons and antiprotons in the antiatoms annihilated. The antiproton annihilations produce easily detected signals; we used these signals to prove that we trapped antihydrogen. However, our technique could be confounded by mirror-trapped antiprotons, which would produce seemingly-identical annihilation signals upon hitting the trap wall. In this paper, we discuss possible sources of mirror-trapped antiprotons and show that antihydrogen and antiprotons can be readily distinguished, often with the aid of applied electric fields, by analyzing the annihilation locations and times. We further discuss the general properties of antiproton and antihydrogen trajectories in this magnetic geometry, and reconstruct the antihydrogen energy distribution from the measured annihilation time history.
description: 17 figures
Investigations concerning the physiology of Gibberellin-induced growth and sexual differentiation phenomena in Arizona Cypress (Cupressus arizonica Greene) seedlings
Creators: name: Glenn, James L.
Publisher: name: University of Calgary
Year: 1973
Subjects: subject: QK 494.5 C975 G62 1973 Microfiche
subject: Growth inhibiting substances
subject: Growth promoting substances
subject: Arizona cypress

description: Bibliography: p. 116-134.
Abundances in planetary nebulae: NGC1535, NGC6629, He2-108, and Tc1
Creators: name: Pottasch, S. R.
name: Surendiranath, R.
name: Bernard-Salas, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The aim of the paper is to determine abundances in a group of PNe with uniform morphology. The PNe discussed are circular excited by rather low-temperature central stars. The relation between abundance and evolution is discussed. The mid-infrared spectra of NGC1535, NGC6629, He2-108 and Tc1 taken with the Spitzer Space Telescope are presented. These spectra are combined with IUE and visual spectra to obtain complete extinction-corrected spectra from which the abundances are determined. These abundances are more accurate for several reasons, the most important is that the inclusion of the far infrared spectra increases the number of observed ions and makes it possible to include the nebular temperature gradient in the abundance calculation. The abundances of these PNe are compared to those found in five other PNe of similar properties and are further compared with predictions of evolutionary models. From this comparison we conclude that these PNe originated from low mass stars, probably between 1 and 2.5 solar masses and at present have core masses between 0.56 and 0.63 solar masses. A consistent description of the evolution of this class of PNe is found that agrees with the predictions of the present nebular abundances, the individual masses and the luminosities of these PNe. The distances to these nebulae can be found as well.
description: 17 pages, 18 tables, 1 figure, Accepted for publication in A&A
Naipaul's unnecessary and unaccommodated man
Creators: name: Hanen, David Jad Markham
Publisher: name: University of Calgary
Year: 1975
Subjects: subject: PR 6027 A55 Z66 1975 Microfiche
subject: Naipaul, Vidiadhar Surajprasad - Criticism and interpretation
subject: Naipaul, Vidiadhar Surajprasad - Characters

description: Bibliography: p. 151-162.
Transient Regime of Kerr Frequency Comb Formation
Creators: name: Savchenkov, Anatoliy A.
name: Matsko, Andrey B.
name: Liang, Wei
name: Ilchenko, Vladimir S.
name: Seidel, David
name: Maleki, Lute
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Temporal growth of an optical Kerr frequency comb generated in a microresonator is studied both experimentally and numerically. We find that the comb emerges from vacuum fluctuations of the electromagnetic field on timescales significantly exceeding the ringdown time of the resonator modes. The frequency harmonics of the comb spread starting from the optically pumped mode if the microresonator is characterized with anomalous group velocity dispersion. The harmonics have different growth rates resulting from sequential four-wave mixing process that explains intrinsic modelocking of the comb.
description: 4 pages, 5 figures
title: The Hawaii and California-based Pelagic Longline Vessels Annual Report for 1 January–31 December 2022
Creators: name: Ito, Russell
Publisher: name: NOAA National Marine Fisheries Service Pacific Islands Fisheries Science Center
publisherIdentifier: https://ror.org/02apffz65
publisherIdentifierScheme: ROR
Year: 2023

description: PIFSC data report ; DR-23-29
description: The Hawaii and California-based pelagic longline logbook annual report for 2022 (1 January–31 December; PIFSC 2023) contains summary data of fishing effort and catch statistics as reported from electronic or paper longline log sheets submitted by Hawaii and California-based pelagic longline fishers. Catch and effort statistics are based on date of longline haul.
Mobilität und Datierung – sieben neolithische Warburger neu untersucht
Creators: name: Gerling, Claudia
name: Doppler, Thomas
name: Schierhold, Kerstin
Publisher: name: Archäologie in Westfalen-Lippe
Year: 2020

description: -
description: Archäologie in Westfalen-Lippe, ARCHÄOLOGIE IN WESTFALEN-LIPPE 2018 (2019)
In Conversation With Claudia Hart
Creators: name: Sauerlaender, Tina
name: Hart, Claudia
Publisher: name: International Journal for Digital Art History
Year: 2020

description: Claudia Hart’s work range in media: architecture, painting/illustration, installation, eventually moving on to study animation – leading her to 3D animation art. Theory seems to be both the starting point and the end point of all of her artistic endeavours. Here, Hart, sits down with Tina Sauerlaender to discuss her work, career and how we are experiencing a crisis of truth.
description: International Journal for Digital Art History, No 5 (2020): History of Digital Art
Conditional and dynamic convex risk measures
Creators: name: Detlefsen, Kai
name: Scandolo, Giacomo
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2005
Subjects: subject: regularity
subject: Conditional convex risk measure
subject: robust representation
subject: entropic risk measure
subject: dynamic convex risk measure
subject: time consistency
subject: 330 Wirtschaft

description: We extend the definition of a convex risk measure to a conditional framework where additional information is available. We characterize these risk measures through the associated acceptance sets and prove a representation result in terms of conditional expectations. As an example we consider the class of conditional entropic risk measures. A new regularity property of conditional risk measures is defined and discussed. Finally we introduce the concept of a dynamic convex risk measure as a family of successive conditional convex risk measures and characterize those satisfying some natural time consistency properties.
HST measures of Mass Accretion Rates in the Orion Nebula Cluster
Creators: name: Manara, C. F.
name: Robberto, M.
name: Da Rio, N.
name: Lodato, G.
name: Hillenbrand, L. A.
name: Stassun, K. G.
name: Soderblom, D. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The present observational understanding of the evolution of the mass accretion rates (Macc) in pre-main sequence stars is limited by the lack of accurate measurements of Macc over homogeneous and large statistical samples of young stars. Such observational effort is needed to properly constrain the theory of star formation and disk evolution. Based on HST/WFPC2 observations, we present a study of Macc for a sample of \sim 700 sources in the Orion Nebula Cluster, ranging from the Hydrogen-burning limit to M\ast \sim 2M\odot. We derive Macc from both the U-band excess and the Hα luminosity (LHα), after determining empirically both the shape of the typical accretion spectrum across the Balmer jump and the relation between the accretion luminosity (Lacc) and LHα, that is Lacc/L\odot = (1.31\pm0.03)\cdotLHα/L\odot + (2.63\pm 0.13). Given our large statistical sample, we are able to accurately investigate relations between Macc and the parameters of the central star such as mass and age. We clearly find Macc to increase with stellar mass, and decrease over evolutionary time, but we also find strong evidence that the decay of Macc with stellar age occurs over longer timescales for more massive PMS stars. Our best fit relation between these parameters is given by: log(Macc/M\odot\cdotyr)=(-5.12 \pm 0.86) -(0.46 \pm 0.13) \cdot log(t/yr) -(5.75 \pm 1.47)\cdot log(M\ast/M\odot) + (1.17 \pm 0.23)\cdot log(t/yr) \cdot log(M\ast/M\odot). These results also suggest that the similarity solution model could be revised for sources with M\ast > 0.5M\odot. Finally, we do not find a clear trend indicating environmental effects on the accretion properties of the sources.
description: 17 pages, 15 figures, accepted for publication in ApJ
Observation of Density Segregation inside Migrating Dunes
Creators: name: Groh, Christopher
name: Rehberg, Ingo
name: Kruelle, Christof A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Spatiotemporal patterns in nature, such as ripples or dunes, formed by a fluid streaming over a sandy surface show complex behavior despite their simple forms. Below the surface, the granular structure of the sand particles is subject to self-organization processes, exhibiting such phenomena as reverse grading when larger particles are found on top of smaller ones. Here we report results of an experimental investigation with downscaled model dunes revealing that, if the particles differ not in size but in density, the heavier particles, surprisingly, accumulate in the central core close to the top of the dune. This finding contributes to the understanding of sedimentary structures found in nature and might be helpful to improve existing dating methods for desert dunes.
description: 4 pages, 5 figures, submitted to Physical Review E Rapid Communications, in print
Die Marchen Hermann Hesses in ihrer tiefenpsychologischen Struktur im Hinblick auf Novalis
Creators: name: Weckl, Eva
Publisher: name: University of Calgary
Year: 1979
Subjects: subject: PT 2617 E85 Z949 1979 Fiche
subject: Hess, Hermann, 1877-1962 - Criticism and interpretation
subject: Novalis, 1772-1801

description: Bibliography: p. 102-104.
Mass and orbit constraints of the gamma-ray binary LS 5039
Creators: name: Szalai, T.
name: Sarty, G. E.
name: Kiss, L. L.
name: Matthews, J. M.
name: Vinkó, J.
name: Kiss, Cs.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results of space-based photometric and ground-based spectroscopic observing campaigns on the gamma-ray binary LS 5039. The new orbital and physical parameters of the system are similar to former results, except we found a lower eccentricity. Our MOST-data show that any broad-band optical photometric variability at the orbital period is below the 2 mmag level. Light curve simulations support the lower value of eccentricity and imply that the mass of the compact object is higher than 1.8 solar masses.
description: 2 pages, 1 figure (with 2 panels); to be published in the Proceedings: From Interacting Binaries to Exoplanets: Essential Modeling Tools, IAU Symposium 282 (18-22 July, 2011, Tatranska Lomnica, Slovakia)
Empirical Loss Landscape Analysis of Neural Network Activation Functions
Creators: name: Bosman, Anna Sergeevna
name: Engelbrecht, Andries
name: Helbig, Marde
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Activation functions play a significant role in neural network design by enabling non-linearity. The choice of activation function was previously shown to influence the properties of the resulting loss landscape. Understanding the relationship between activation functions and loss landscape properties is important for neural architecture and training algorithm design. This study empirically investigates neural network loss landscapes associated with hyperbolic tangent, rectified linear unit, and exponential linear unit activation functions. Rectified linear unit is shown to yield the most convex loss landscape, and exponential linear unit is shown to yield the least flat loss landscape, and to exhibit superior generalisation performance. The presence of wide and narrow valleys in the loss landscape is established for all activation functions, and the narrow valleys are shown to correlate with saturated neurons and implicitly regularised network configurations.
description: Accepted for publication in Genetic and Evolutionary Computation Conference Companion, July 15--19, 2023, Lisbon, Portugal
Gaussian Matrix Product States
Creators: name: Schuch, Norbert
name: Wolf, Michael M.
name: Cirac, J. Ignacio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce Gaussian Matrix Product States (GMPS), a generalization of Matrix Product States (MPS) to lattices of harmonic oscillators. Our definition resembles the interpretation of MPS in terms of projected maximally entangled pairs, starting from which we derive several properties of GMPS, often in close analogy to the finite dimensional case: We show how to approximate arbitrary Gaussian states by MPS, we discuss how the entanglement in the bonds can be bounded, we demonstrate how the correlation functions can be computed from the GMPS representation, and that they decay exponentially in one dimension, and finally relate GMPS and ground states of local Hamiltonians.
description: This work originally appeared as Sec. VII of quant-ph/0509166, and is published in the Proceedings on the conference on Quantum information and many body quantum systems, edited by M. Ericsson and S. Montangero, pg. 129 (Edizioni della Normale, Pisa, 2008)
History between postivism and irrationalism: the origin and evolution of Jose Ortega y Gasset's philosophy of history
Creators: name: Stabolepszy, Gregory J.
Publisher: name: University of Calgary
Year: 1972
Subjects: subject: D 16.8 S72 1972 Microfilm
subject: History - Philosophy
subject: Historiography
subject: Ortega y Gasset, Jose, 1883-1955

description: Bibliography: p. 94-97.
Frau in den Komodien Hofmannsthals
Creators: name: Huber, Sonja Monika
Publisher: name: University of Calgary
Year: 1970
Subjects: subject: PT 2617 O47 Z739 1970
subject: Hofmannsthal, Hugo Hofmann, Edler von, 1874-1929
subject: Women in literature

description: Bibliography: p. 105-111.
Dream recall and nightmare frequency in patients with sleep disorders: A diary study
Creators: name: Goitom, Alexander Dawit
name: Schredl, Michael
Publisher: name: International Journal of Dream Research
Year: 2020

description: As sleep and dreaming are closely intertwined, sleep disorders such as insomnia, restless legs syndrome, sleep-related breathing disorders, or narcolepsy are very likely to have an effect on dream recall, dream quality and nightmare frequency. Previous studies based on questionnaire measures have indeed shown such effects, e.g., heightened dream recall in patients with insomnia, or more frequent nightmares in patients with narcolepsy. The present study measured dream recall frequency, nightmare frequency, and emotional tone of dreams using a 7-day sleep/dream diary that was completed by the patients as part of their clinical routine prior to the first consultation in a sleep center. The sample included 256 patients (138 women, 118 men) with a variety of different diagnoses. In about 55% of the patients, the diagnostic procedure also included two nights with polysomnography. The findings indicate that, overall, patients with sleep disorders showed increased dream recall and nightmare frequencies, and more negatively toned dreams in comparison with healthy controls. This would be in line with the continuity hypothesis assuming that these patients might have experienced more stress during the day. The heightened stress levels might aggravate the sleep disorder and/or be a result of the sleep disorder itself. The findings indicate that studying dreaming in patients with sleep disorders can help patients, i.e., identifying and treating nightmare disorders, and help understand the interactions between waking life, physiological variables, and the dreaming process.
description: International Journal of Dream Research, Vol 13, No 2 (October 2020)
Holographic Description of Finite Size Effects in Strongly Coupled Superconductors
Creators: name: García-García, Antonio M.
name: Santos, Jorge E.
name: Way, Benson
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Despite its fundamental and practical interest, the understanding of mesoscopic effects in strongly coupled superconductors is still limited. Here we address this problem by studying holographic superconductivity in a disk and a strip of typical size $\ell$. For $\ell < \ell_c$, where $\ell_c$ depends on the chemical potential and temperature, we have found that the order parameter vanishes. The superconductor-metal transition at $\ell = \ell_c$ is controlled by mean-field critical exponents which suggests that quantum and thermal fluctuations induced by finite size effects are suppressed in holographic superconductors. Intriguingly, the effective interactions that bind the order parameter increases as $\ell$ decreases. Most of these results are consistent with experimental observations in Pb nanograins at low temperature and qualitatively different from the ones expected in a weakly coupled superconductor.
description: 4 pages, 3 figures
title: Characterizing the Financial Cycle
title: Evidence from a Frequency Domain Analysis
titleType: Subtitle
Creators: name: Strohsal, Till
name: Proaño, Christian R.
name: Wolters, Jürgen
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2015
Subjects: subject: Business Cycle
subject: Financial Cycle
subject: Indirect Spectrum Estimation
subject: Bootstrapping Inference
subject: 310 Sammlungen allgemeiner Statistiken
subject: 330 Wirtschaft

description: A growing body of literature argues that the financial cycle is considerably longer in duration and larger in amplitude than the business cycle and that its distinguishing features became more pronounced over time. This paper proposes an empirical approach suitable to test these hypothe- ses. We parametrically estimate the whole spectrum of financial and real variables to obtain a complete picture of their cyclical properties. We provide strong statistical evidence for the US and slightly weaker evidence for the UK validating the hypothesized features of the financial cycle. In Germany, however, the financial cycle is, if at all, much less visible.
Ostalpine Kupferlagerstätten und ihre Bedeutung für die prähistorische Metallgewinnung in Mitteleuropa
Creators: name: Christoforidis, Alexander
name: Pernicka, Ernst
name: Schickler, Hilmar
Publisher: name: Jahrbuch des Römisch-Germanischen Zentralmuseums Mainz
Year: 2020

description: Jahrbuch des Römisch-Germanischen Zentralmuseums Mainz, Bd. 35 Nr. 2 (1988)
Shapes and gravitational fields of rotating two-layer Maclaurin ellipsoids: Application to planets and satellites
Creators: name: Schubert, Gerald
name: Anderson, John D.
name: Zhang, Keke
name: Kong, Dali
name: Helled, Ravit
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The exact solution for the shape and gravitational field of a rotating two-layer Maclaurin ellipsoid of revolution is compared with predictions of the theory of figures up to third order in the small rotational parameter of the theory of figures. An explicit formula is derived for the external gravitational coefficient $J_2$ of the exact solution. A new approach to the evaluation of the theory of figures based on numerical integration of ordinary differential equations is presented. The classical Radau-Darwin formula is found not to be valid for the rotational parameter ε_2 = Ω^2/(2πGρ_2) >= 0.17 since the formula then predicts a surface eccentricity that is smaller than the eccentricity of the core-envelope boundary. Interface eccentricity must be smaller than surface eccentricity. In the formula for $ε_2$, $Ω$ is the angular velocity of the two-layer body, $ρ_2$ is the density of the outer layer, and G is the gravitational constant. For an envelope density of 3000 kg m^(-3) the failure of the Radau-Darwin formula corresponds to a rotation period of about 3 hr. Application of the exact solution and the theory of figures is made to models of Earth, Mars, Uranus, and Neptune. The two-layer model with constant densities in the layers can provide realistic approximations to terrestrial planets and icy outer planet satellites. The two-layer model needs to be generalized to allow for a continuous envelope (outer layer) radial density profile in order to realistically model a gas or ice giant planet.
description: PEPI, in press. 50 pages, 8 figures, 6 tables
Rejection & Resilience Introductory Workshop
Creators: name: Cole, Ellen
Publisher: name: Northumbria University
Year: 2024
Subjects: classificationCode: 390303
subject: Higher education
classificationCode: 440710
subject: Research, science and technology policy
classificationCode: 350507
subject: Workplace wellbeing and quality of working life

description: This is an outline for a workshop where researchers are invited to discuss experiences of rejection within their research careers. The intention is to create a safe, supportive space where researchers can share their experiences and coping strategies in support of the wider objective of acknowledging that rejection is a routine part of academic life and should be openly discussed. The workshop also enables participants and facilitators to discuss ideas for further activities in support of this objective.This resource has been developed as part of a series of events on the theme of Rejection and Resilience at Northumbria University.
A study of the ecological effects of municipal sewage effluent on a swampland stream at Hay River, Northwest Territories
Creators: name: Wright, Philemon Brooks
Publisher: name: University of Calgary
Year: 1974
Subjects: subject: TD 763 W75 1974 Microfiche
subject: Water - Pollution - Hay River - Northwest Territories
subject: Sewage disposal - Northwest Territories - Hay River
subject: Stream self-purification
subject: Marine ecology

description: Bibliography: p. 101-105.
Hydrophobic silica aerogel production at KEK
Creators: name: Tabata, Makoto
name: Adachi, Ichiro
name: Kawai, Hideyuki
name: Sumiyoshi, Takayuki
name: Yokogawa, Hiroshi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present herein a characterization of a standard method used at the High Energy Accelerator Research Organization (KEK) to produce hydrophobic silica aerogels and expand this method to obtain a wide range of refractive index (n = 1.006-1.14). We describe in detail the entire production process and explain the methods used to measure the characteristic parameters of aerogels, namely the refractive index, transmittance, and density. We use a small-angle X-ray scattering (SAXS) technique to relate the transparency to the fine structure of aerogels.
description: To be published in Nucl. Instr. and Meth. A, 9 pages, 10 figures, 1 table
title: Observed and Estimated Bycatch  of Salmon in U.S. West Coast Fisheries, 2002-22
Creators: name: Richerson, Kate E.
name: Somers, Kayleigh A.
name: Tuttle, Vanessa J.
name: Riley, Neil B.
name: McVeigh, Jon T.
Publisher: name: NOAA National Marine Fisheries Service Northwest Fisheries Science Center
publisherIdentifier: https://ror.org/05r7z1k40
publisherIdentifierScheme: ROR
Year: 2024

description: NOAA data report NMFS NWFSC ; DR-2024-01
description: This report summarizes the observed and estimated bycatch of all salmon species observed in fisheries monitored by the West Coast Groundfish Observer Program (WCGOP), the At-Sea Hake Observer Program (A-SHOP), the Electronic Monitoring (EM) program, and the Catch Monitor (CM) program.
Giant topological insulator gap in graphene with 5d adatoms
Creators: name: Hu, Jun
name: Alicea, Jason
name: Wu, Ruqian
name: Franz, Marcel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two-dimensional topological insulators (2D TIs) have been proposed as platforms for many intriguing applications, ranging from spintronics to topological quantum information processing. Realizing this potential will likely be facilitated by the discovery of new, easily manufactured materials in this class. With this goal in mind we introduce a new framework for engineering a 2D TI by hybridizing graphene with impurity bands arising from heavy adatoms possessing partially filled d-shells, in particular osmium and iridium. First principles calculations predict that the gaps generated by this means exceed 0.2 eV over a broad range of adatom coverage; moreover, tuning of the Fermi level is not required to enter the TI state. The mechanism at work is expected to be rather general and may open the door to designing new TI phases in many materials.
description: 7 pages, 8 figures
Electrochemical and synthetic studies of organotitanium nitrogen fixation-systems
Creators: name: Ibrahim, Ezzat Dawood
Publisher: name: University of Calgary
Year: 1973
Subjects: subject: QD 412 T6 I26 1973 Microfiche
subject: Titanium organic compounds
subject: Electrochemistry
subject: Nitrogen - fixation

description: Bibliography: p. 149-156.
Generic Fe buffer layers for Fe-based superconductors: Epitaxial FeSe1-xTex thin films
Creators: name: Iida, Kazumasa
name: Haenisch, Jens
name: Schulze, Michael
name: Aswartham, Saicharan
name: Wurmehl, Sabine
name: Buechner, Bernd
name: Schultz, Ludwig
name: Holzapfel, Bernhard
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Biaxially textured FeSe1-xTex films have been realized on Fe-buffered MgO substrates by pulsed laser deposition. Similar to the Fe/BaFe2As2 bilayers, the crystalline quality of FeSe1-xTex films exhibit a sharp out-of-plane and in-plane texture less than 0.9°. The Fe/FeSe1-xTex bilayers showed high superconducting transition temperatures of over 17 K. The angular-dependent critical current densities exhibit peaks positioned at H // ab similar to other pnictide thin films. The volume pinning force of FeSe1-xTex in this direction is very strong compared with that of Co-doped BaFe2As2, due to a good matching between the interlayer distance in the c direction and the out-of-plane coherence length.
description: 5 figures
Compiler support for learning program invariants
Creators: name: Lay, Michael
Publisher: name: Macquarie University
Year: 2023
Subjects: Other education not elsewhere classified

description: Formal methods are a skill in high demand for programmers in safety-critical industries. However, the teaching and learning of formal methods is not well understood. We perform a controlled trial of two possible approaches to teaching one fundamental skill from formal methods, and analyse the differences in effectiveness. The fundamental skill is the understanding and creation of program invariants. We compare the traditional method of teaching invariants, which we determined by extensive survey, to a compiler-supported technique. We find no conclusive evidence of a difference in learning speed or depth, however, we do find indications that compiler support is valuable for learners. We provide an in-depth analysis of our data and all material required to build on it. The results indicate a need for larger trials.
HELM Survey of 1982 Graduates, 1983-1985
Creators: name: Brennon, J. L.
name: McGeevor, P. A.
Publisher: name: UK Data Service
Year: 1988

description: The Higher Education and the Labour Market (HELM) Project was longitudinal survey of 1982 CNAA graduates, looking at their jobs and evaluating their education in 1982, 1984 and 1985.
Structure and bonding in organotin phosphorus oxyacid compounds
Creators: name: Van Roode, Johannes H. G.
Publisher: name: University of Calgary
Year: 1975
Subjects: subject: QD 412 S7 R66 1975 Microfiche
subject: Organotin compounds
subject: Phosphorus
subject: Oxyacid compounds

description: Bibliography: p. 165-173.
Random Survey of Public Attitudes to Museums, Archaeology and the Past, 1985
Creators: name: Merriman, N.
Publisher: name: UK Data Service
Year: 1989

description: The aim of this survey was to gauge for the first time public attitudes to, and participation in, heritage presentations; to understand why certain social groups tend to participate and others do not; to gauge public images of and attitudes to archaelogy and the past. The data, covering both heritage visitors and non-visitors, is linked in with sociological theory.
Diophantine type of interval exchange maps
Creators: name: Kim, Dong Han
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37E05, 11J70

description: Roth type irrational rotation numbers have several equivalent arithmetical characterizations as well as several equivalent characterizations in terms of the dynamics of the corresponding circle rotations. In this paper we investigate how to generalize Roth-like Diophantine conditions to interval exchange maps. If one considers the dynamics in parameter space one can introduce two nonequivalent Roth-type conditions, the first (condition (Z)) by means of the Zorich cocyle, the second (condition (A)) by means of a further acceleration of the continued fraction algorithm introduced in [10]. A third very natural condition (condition (D)) arises by considering the distance between the discontinuity points of the iterates of the map. If one considers the dynamics of an interval exchange map in phase space then one can introduce the notion of Diophantine type by considering the asymptotic scaling of return times pointwise or w.r.t. uniform convergence (resp. condition (R) and (U)). In the case of circle rotations all the above conditions are equivalent. For interval exchange maps of three intervals we show that (D) and (A) are equivalent and imply (Z), (U) and (R) which are equivalent among them. For maps of four intervals or more we prove several results, the only relation which we cannot decide is whether (Z) implies (R) or not.
description: 35 pages
0126 Zwei Gemälde niederländischer Meister in Zagreb – Provenienz und Rezeptionsgeschichte
Creators: name: Pasini Tržec, Iva
name: Dulibić, Ljerka
name: Tolnai, Tamara
Publisher: name: RIHA Journal
Year: 2015

description: The authors present the complex reception history of two paintings in the Dutch Painting Collection at the Strossmayer Gallery of Old Masters in Zagreb, reconstructing their provenance on the basis of archival documents and the analysis of heraldic insignia and other marks on the reverse. The circumstances of the purchase of Master of the Virgo inter Virgines' Throne of Mercyin Milan 1872 reflect the Italian art market development at the time. The provenance of the Nativity and the Adoration of the Shepherds by The Master of the Douai Carrying of the Cross, possibly Master J. Kock, purchased in Cologne 1871, includes prominent owners: family Peltzer, family Wittelsbach, Josef Höger, and Johann Friedrich Fromm. The importance of these two paintings was acknowledged by their inclusion in the famous exhibition held at Museum Boymans in Rotterdam 1936.
description: RIHA Journal, 2015: RIHA Journal
ESRC/Manchester University Macclesfield Survey, 1983
Social Implications of Changing Patterns of Work and Employment, 1983
Creators: name: Laite, A. J.
name: Campbell, S.
name: Straw, P.
name: Pyke, F.
Publisher: name: UK Data Service
Year: 1989

description: To study the social implications of changing patterns of work and employment
The synthesis, structure, and some reactions of a bicyclic sulphur-nitrogen cation, S4N5Cl
Creators: name: Fielding, Lee
Publisher: name: University of Calgary
Year: 1978
Subjects: subject: QD 181 S1 F52 1978 Microfiche
subject: Sulphur compounds
subject: Bicyclic compounds

description: Bibliography: p. 51-55.
0128 American Connections: The early works of Thomas Bang
Creators: name: Ring Petersen, Anne
Publisher: name: RIHA Journal
Year: 2015

description: The Danish artist Thomas Bang spent his early years in the USA. The works he created in this formative period were thus profoundly shaped by the contemporary movements in American art of the 1960s and 1970s when sculpture, or to be more precise, three-dimensional work became a hotbed of expansive experiments. This article traces how Bang made a radical move from painting to sculpture, which was characteristic of that time, and how he developed his artistic idiom by taking an active part in some of the seminal new departures in American art, in particular process art and post-minimalism. By leaping forward to Bang's later works produced after his return to Denmark, the article also demonstrates how the sculptural syntax and working principles developed in the early works still underlie and structure the artist's more allegorical sculptures and installations from the 2000s, thus testifying to the lasting impact of Bang's American period, which remains the key to understanding his works.
description: RIHA Journal, 2015: RIHA Journal
Milky Way Star Forming Complexes and the Turbulent Motion of the Galaxy's Molecular Gas
Creators: name: Lee, E. J.
name: Murray, N.
name: Rahman, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyze Spitzer GLIMPSE, MSX, and WMAP images of the Milky Way to identify 8 micron and free-free sources in the Galaxy. Seventy-two of the eighty-eight WMAP sources have coverage in the GLIMPSE and MSX surveys suitable for identifying massive star forming complexes (SFC). We measure the ionizing luminosity functions of the SFCs and study their role in the turbulent motion of the Galaxy's molecular gas. We find a total Galactic free-free flux f_ν = 46177.6 Jy; the 72 WMAP sources with full 8 micron coverage account for 34263.5 Jy (~75%), with both measurements made at ν=94GHz (W band). We find a total of 280 SFCs, of which 168 have unique kinematic distances and free-free luminosities. We use a simple model for the radial distribution of star formation to estimate the free-free and ionizing luminosity for the sources lacking distance determinations. The total dust-corrected ionizing luminosity is Q = 2.9 \pm 0.5 x 10^53 photons s^-1, which implies a galactic star formation rate of 1.2 \pm 0.2 M_{\sun} yr^-1. We present the (ionizing) luminosity function of the SFCs, and show that 24 sources emit half the ionizing luminosity of the Galaxy. The SFCs appear as bubbles in GLIMPSE or MSX images; the radial velocities associated with the bubble walls allow us to infer the expansion velocity of the bubbles. We calculate the kinetic luminosity of the bubble expansion and compare it to the turbulent luminosity of the inner molecular disk. SFCs emitting 80% of the total galactic free-free luminosity produce a kinetic luminosity equal to 65% of the turbulent luminosity in the inner molecular disk. This suggests that the expansion of the bubbles is a major driver of the turbulent motion of the inner Milky Way molecular gas.
description: 40 pages, 12 figures, Accepted for publication in ApJ
A Hierarchical Architecture for Optimal Unit Commitment and Control of an Ensemble of Steam Generators
Creators: name: Spinelli, Stefano
name: Farina, Marcello
name: Ballarino, Andrea
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A hierarchical architecture for the optimal management of an ensemble of steam generators is presented. The subsystems are coordinated by a multilayer scheme for jointly sustaining a common load. The high level optimizes the load allocation and the generator schedule, considering activation dynamics by a hybrid model. At the medium level, a robust tube-based model predictive control (MPC) tracks a time-varying demand using a centralized--but aggregate--model, whose order does not scale with the number of subsystems. A nonlinear optimization, at medium level, addresses MPC infeasibility due to abrupt changes of ensemble configuration. Low-level decentralized controllers stabilize the generators. This control scheme enables the dynamical modification of the ensemble configuration and plug and play operations. Simulations demonstrate the approach potentialities.
Finite temperature and dissipative corrections to the Gross-Pitaevskii equation from $λΦ^4$ one loop contributions
Creators: name: Matos, T.
name: Suárez, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Starting with a scalar field in a thermal bath and using the one loop quantum correction potential, we rewrite the Klein-Gordon equation in its thermodynamical representation and study the behavior of this scalar field due to temperature variations in the equations of motion. We find the generalization of a Gross-Pitaevskii like equation for a relativistic Bose gas with finite temperature, the corresponding thermodynamic and viscosity expressions, and an expression for the postulate of the first law of the thermodynamics for this BECs. We also propose that the equations obtained might help to explain at some level the phase transition of a Bose-Einstein Condensate in terms of quantum field theory in a simple way.
description: 5 pages, accepted for publication at EPL. arXiv admin note: substantial text overlap with arXiv:1103.5731
The Preparation and some reactions of dialkylamino and halogeno derivatives of cyclic phosphonitrilic fluorides
Creators: name: Hedgeland, R. O.
Publisher: name: University of Calgary
Year: 1971
Subjects: subject: QD 181 P1 H43 1971
subject: Phosphorus
subject: Cyclic compounds
subject: Chemical reactions

description: Bibliography: p. 99-102
Personalia
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 10 Nr. 10 (1957): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
The Morphologies of Massive Galaxies at 1
Creators: name: Bruce, V. A.
name: Dunlop, J. S.
name: Cirasuolo, M.
name: McLure, R. J.
name: Targett, T. A.
name: Bell, E. F.
name: Croton, D. J.
name: Dekel, A.
name: Faber, S. M.
name: Ferguson, H. C.
name: Grogin, N. A.
name: Kocevski, D. D.
name: Koekemoer, A. M.
name: Koo, D. C.
name: Lai, K.
name: Lotz, J. M.
name: McGrath, E. J.
name: Newman, J. A.
name: van der Wel, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have used deep, HST, near-IR imaging to study the morphological properties of the most massive galaxies at high z, modelling the WFC3/IR H-band images of the ~200 galaxies in the CANDELS-UDS field with 1 < z_phot < 3, and stellar masses M_star > 10^11 M_sun. We have used both single-Sersic and bulge+disk models, have investigated the errors/biases introduced by uncertainties in the background and the PSF, and have obtained formally-acceptable model fits to >90% of the galaxies. Our results indicate that these massive galaxies at 1 < z < 3 lie both on and below the local size-mass relation, with a median R_e~2.6 kpc, a factor of ~2.3 smaller than comparably-massive local galaxies. Moreover, we find that bulge-dominated objects in particular show evidence for a growing bimodality in the size-mass relation with increasing z, and by z > 2 the compact bulges display effective radii a factor ~4 smaller than local ellipticals of comparable mass. These trends appear to extend to the bulge components of disk-dominated galaxies, and vice versa. We also find that, while such massive galaxies at low z are bulge-dominated, at 1 < z < 2 they are predominantly mixed bulge+disk systems, and by z > 2 they are mostly disk-dominated. The majority of the disk-dominated galaxies are actively forming stars, but this is also true for many of the bulge-dominated systems. Interestingly, however, while most of the quiescent galaxies are bulge-dominated, we find that a significant fraction (25-40%) of the most quiescent galaxies have disk-dominated morphologies. Thus, while our results show that the massive galaxy population is undergoing dramatic changes at this crucial epoch, they also suggest that the physical mechanisms which quench star-formation activity are not simply connected to those responsible for the morphological transformation of massive galaxies into present-day giant ellipticals.
description: 39 pages, 19 figures, 2 tables, submitted to MNRAS
Feasibility, Accuracy and Performance of Contact Block Reduction method for multi-band simulations of ballistic quantum transport
Creators: name: Ryu, Hoon
name: Park, Hong-Hyun
name: Shin, Mincheol
name: Vasileska, Dragica
name: Klimeck, Gerhard
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Numerical utilities of the Contact Block Reduction (CBR) method in evaluating the retarded Green's function, are discussed for 3-D multi-band open systems that are represented by the atomic tight-binding (TB) and continuum k\cdotp (KP) band model. It is shown that the methodology to approximate solutions of open systems which has been already reported for the single-band effective mass model, cannot be directly used for atomic TB systems, since the use of a set of zincblende crystal grids makes the inter-coupling matrix be non-invertible. We derive and test an alternative with which the CBR method can be still practical in solving TB systems. This multi-band CBR method is validated by a proof of principles on small systems, and also shown to work excellent with the KP approach. Further detailed analysis on the accuracy, speed, and scalability on high performance computing clusters, is performed with respect to the reference results obtained by the state-of- the-art Recursive Green's Function and Wavefunction algorithm. This work shows that the CBR method could be particularly useful in calculating resonant tunneling features, but show a limited practicality in simulating field effect transistors (FETs) when the system is described with the atomic TB model. Coupled to the KP model, however, the utility of the CBR method can be extended to simulations of nanowire FETs.
description: 10 Pages, 9 Figures