cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Possible counterpart signal of the Fermi bubbles at the cosmic-ray positrons
Creators: name: Cholis, Ilias
name: Krommydas, Iason
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The inner galaxy has hosted cosmic-ray burst events including those responsible for the gamma-ray Fermi bubbles and the eROSITA bubbles in X-rays. In this work, we study the AMS-02 positron fraction and find three features around 12, 21 and 48 GeV of which the lowest energy has a 1.4 to 4.9-$σ$ significance, depending on astrophysical background assumptions. Using background simulations that explain the cosmic-ray positron fraction, positron flux and electron plus positron flux, by primary, secondary cosmic rays and cosmic rays from local pulsars, we test these spectral features as originating from electron/positron burst events from the inner galaxy. We find the 12 GeV feature, to be explained by an event of age $τ\simeq 3 - 10$ Myr; in agreement with the proposed age of the Fermi bubbles. Furthermore, the energy in cosmic-ray electrons and positrons propagating along the galactic disk and not within the Fermi bubbles volume, is estimated to be $10^{51.5}-10^{57.5}$ ergs, or $O(10^{-4}) -O(1)$ the cosmic-ray energy causing the Fermi bubbles. We advocate that these positron fraction features, are the counterpart signals of the Fermi bubbles, or of substructures in them, or of the eROSITA bubbles.
description: 10 pages, 3 figures and 1 table, Zenodo link: https://zenodo.org/record/6995268#.YvsoJS ZNp8
Mimosa chiquitaniensis Atahuachi & C. E. Hughes, sp. nov.
Creators: name: Margoth Atahuachi
name: M. Leontien Van Der Bent
name: John R. I. Wood
name: Gwilym P. Lewis
name: Colin E. Hughes
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Magnoliophyta
Magnoliopsida
Fabales
Fabaceae
Mimosa
Mimosa chiquitaniensis

description: 12. ** § Mimosa chiquitaniensis Atahuachi & C. E. Hughes sp. nov.
See new species description above.
description: Published as part of Margoth Atahuachi, M. Leontien Van Der Bent, John R. I. Wood, Gwilym P. Lewis & Colin E. Hughes, 2016, Bolivian Mimosa (Leguminosae, Mimosoideae): three new species and a species checklist, pp. 201-222 in Phytotaxa 260 (3) on page 213, DOI: 10.11646/phytotaxa.260.3.1, http://zenodo.org/record/192175
Evaluation of social studies in upper elementary and junior high grades in selected schools from the Calgary Roman Catholic Separate School District
Creators: name: Dawood, Ismail
Publisher: name: University of Calgary
Year: 1979
Subjects: subject: H 62.5 C3 D38 1979 Microfiche
subject: Social sciences - Study and teaching (Elementary) - Alberta
subject: Social sciences - Study and teaching (Primary) - Alberta

description: Bibliography: p. 116-122.
Dyffryn Clwyd Court Roll Database, 1294-1422
Creators: name: Brown, M. H.
name: Davies, R. Rees
name: Barrell, A. D. M.
name: Smith, L. Beverley
name: Padel, O. J.
Publisher: name: UK Data Service
Year: 1997

description: The main aims of the project were:
 1. To produce and make available a database of material in the Dyffryn Clwyd court rolls, in the form of a calendar in English;
 2. To carry out detailed analysis of the data processed;
 3. To investigate and apply new methods of handling and analysing large quantities of medieval historical data.
 This dataset improves upon and supersedes Welsh Society in the Fourteenth Century : The Evidence of Court Rolls (SN 2979).
Positronium hydride decay into proton, electron, and one or zero photons
Creators: name: Aslam, M. Jamil
name: Chen, Wen
name: Czarnecki, Andrzej
name: Mubasher, Muhammad
name: Stephens, Connor
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Decay rates of the positronium hydride PsH, a bound state of a proton, a positron, and two electrons, are determined for two rare channels, PsH $\to p^+ e^- γ$ and PsH $\to p^+ e^-$. Previous studies overestimated these rates by factors of about 2 and 700, respectively. We explain the physics underlying these wrong predictions. We confirm a range of static PsH properties, including the non-relativistic ground state energy, expectation values of inter-particle distances and their powers, and the three and four particle coalescence probabilities, using a variational method in the Gaussian basis.
Precession due to a close binary system: An alternative explanation for ν-Octantis?
Creators: name: Morais, M. H. M.
name: Correia, A. C. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We model the secular evolution of a star's orbit when it has a nearby binary system. We assume a hierarchical triple system where the inter-binary distance is small in comparison with the distance to the star. We show that the major secular effect is precession of the star's orbit around the binary system's centre of mass. We explain how we can obtain this precession rate from the star's radial velocity data, and thus infer the binary system's parameters. We show that the secular effect of a nearby binary system on the star's radial velocity can sometimes mimic a planet. We analyze the radial velocity data for ν-octantis A which has a nearby companion (ν-octantis B) and we obtain retrograde precession of (-0.86 \pm 0.02)\degree/yr. We show that if ν-octantis B was itself a double star, it could mimic a signal with similarities to that previously identified as a planet of ν-octantis A. Nevertheless, we need more observations in order to decide in favor of the double star hypothesis.
Photoionization modeling of the Galactic planetary nebulae Abell 39 and NGC 7027
Creators: name: Danehkar, Ashkbiz
name: Frew, David J.
name: Parker, Quentin A.
name: De Marco, Orsola
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We estimate distances to the spherical planetary nebula Abell 39 and the bipolar planetary nebula NGC 7027 by interpolating from a wide grid of photoionization models using the 3-D code, MOCASSIN. We find preliminary distances of 1.5 kpc and 0.9 kpc respectively, with uncertainties of about 30%.
description: 2 pages, 1 figure, presented at the IAU Symposium 283 "Planetary Nebulae: an Eye to the Future", Puerto de la Cruz, Tenerife, Spain, 2011
Non-Fickian Diffusion Affects the Relation between the Salinity and Hydrate Capacity Profiles in Marine Sediments
Creators: name: Goldobin, Denis S
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: On-site measurements of water salinity (which can be directly evaluated from the electrical conductivity) in deep-sea sediments is technically the primary source of indirect information on the capacity of the marine deposits of methane hydrates. We show the relation between the salinity (chlorinity) profile and the hydrate volume in pores to be significantly affected by non-Fickian contributions to the diffusion flux---the thermal diffusion and the gravitational segregation---which have been previously ignored in the literature on the subject and the analysis of surveys data. We provide amended relations and utilize them for an analysis of field measurements for a real hydrate deposit.
description: 7 pages, 2 figures, 1 table, submitted to Compte Rendus Mecanique
Children's comprehension of contours via the audio-tutorial method of instruction
Creators: name: Birch-Gentles, Sepherina Yolande
Publisher: name: University of Calgary
Year: 1971
Subjects: subject: GA 151 B55 1971 Microfilm
subject: Maps
subject: Teaching - Aids and devices
subject: Geography - Study and teaching (Elementary)

description: Bibliography: p. 30-33.
Intergroup selection as a way to peace and sustainability
Creators: name: Giraldo-Suárez, Angela Isabel
name: Rodríguez, Nohra León
Publisher: name: Visions for Sustainability
Year: 2023

description: Due to an increasing demand for resources that exceeds the biophysical system’s ability to regenerate itself (Wackernagel et al., 2021), environmental resources are under stress, and society faces uncertainties related to their scarcity and climate change that can lead to violent conflicts. This context raises questions about mechanisms to understand the phenomenon and adapt. Therefore, Fisher and Rucki’s (2017) approach becomes relevant: economic development, ecosystem functioning, peace, and conflict management are necessary components of sustainability, but how they work together is not well understood. To address this issue, a theoretical path is proposed based on three approaches: sustainability transition, complexity economics, and peace from a vision of complex systems. By promoting cooperative behaviors through intergroup selection processes, progress can be made toward sustainability and the emergence of peace as a stable behavior.
description: Visions for Sustainability, No 19 (2023) - NEW Visions online
High-speed tunable microwave-rate soliton microcomb
Creators: name: He, Yang
name: Lopez-Rios, Raymond
name: Javid, Usman A.
name: Ling, Jingwei
name: Li, Mingxiao
name: Xue, Shixin
name: Vahala, Kerry
name: Lin, Qiang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Microwave signal generation with fast frequency tuning underlies many applications including sensing, imaging, ranging, time keeping, wireless communication, and high-speed electronics. Soliton microcombs are a promising new approach for photonic-based microwave signal synthesis. To date, however, tuning rate has been limited in microcombs (and in frequency combs generally). Here, we demonstrate the first microwave-rate soliton microcomb whose repetition rate can be tuned at a high speed. By integrating an electro-optic tuning/modulation element into a lithium niobate comb microresonator, a modulation bandwidth up to 75 MHz and a continuous frequency modulation rate up to 5.0 * 10^14 Hz/s are achieved, several orders-of-magnitude faster than existing microcomb technology. These features are especially useful for disciplining an optical VCO to a long-term reference such as an optical clock or for tight phase lock in dual-microcomb clocks or synthesizers. Moreover, the microwave signal rate can be set to any X - W band rate. Besides its positive impact on microwave photonics, fast repetition rate control is generally important in all applications of frequency combs.
Mimosa chochisensis Atahuachi & C. E. Hughes, sp. nov.
Creators: name: Margoth Atahuachi
name: M. Leontien Van Der Bent
name: John R. I. Wood
name: Gwilym P. Lewis
name: Colin E. Hughes
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Magnoliophyta
Magnoliopsida
Fabales
Fabaceae
Mimosa
Mimosa chochisensis

description: 13. ** § Mimosa chochisensis Atahuachi & C. E. Hughes sp. nov.
See new species description above.
description: Published as part of Margoth Atahuachi, M. Leontien Van Der Bent, John R. I. Wood, Gwilym P. Lewis & Colin E. Hughes, 2016, Bolivian Mimosa (Leguminosae, Mimosoideae): three new species and a species checklist, pp. 201-222 in Phytotaxa 260 (3) on page 213, DOI: 10.11646/phytotaxa.260.3.1, http://zenodo.org/record/192175
An experimental approach towards cost benefit analysis of 850 kW solar PV plant
Creators: name: Kumar, Pancham
name: Bukya, Mahipal
name: Shankar, Ajay
name: Garg, Peeyush
name: Gowtham, N.
Publisher: name: Visions for Sustainability
Year: 2023

description: Solar photovoltaic (PV) cell technology is the simplest way to generate renewable power and reduce our reliance on non-renewable energy sources. Because India is located on the earth's equatorial sunbed, it receives a lot of radiant energy from the sun. Most Indian states have approximately 250–300 d of clear, bright weather per year. Among all the states, Rajasthan is one of India's sunniest states, and it is a solar energy hotspot. Manipal University Jaipur (MUJ) is situated in Jaipur, Rajasthan, with 26.80 latitudes and 75.560 longitudes and a surface area of 122 acres. It receives high levels of solar radiation. All the hostel's block rooms have air conditioners (ACs), so the energy demand in the summer is high. The performance assessment of 850 kW installed capacity on hostel building-mounted solar photovoltaic power plant has been carried out, in view of obtaining better designing, operation/maintenance characteristics of the system. MUJ installed an 850-kW solar power plant for on-site generation and utilization to overcome this enormous electricity bill problem. The paper aims to collect the solar power generation of the plant from April 2019 to March 2020 and shows an investigation of the variation of energy consumption from the Electricity Board (EB), Jaipur Vidyut Vitaran Nigam Ltd (JVNL) of the university hostel block while using solar power and maintains the conventional system. The paper also explores the cost-benefit analysis of 850 kW solar power plants. The impacts of various economic parameters are also taken into consideration.
description: Visions for Sustainability, No 19 (2023) - NEW Visions online
PQCD Analysis of Parton-Hadron Duality
Creators: name: Liuti, Simonetta
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose an extraction of the running coupling constant of QCD in the infrared region from experimental data on deep inelastic inclusive scattering at Bjorken x -> 1. We first attempt a perturbative fit of the data that extends NLO PQCD evolution to large x values and final state invariant mass, W, in the resonance region. We include both target mass corrections and large x resummation effects. These effects are of order O(1/Q^2), and they improve the agreement with the Q^2 dependence of the data. Standard analyses require the presence of additional power corrections, or dynamical higher twists, to achieve a fully quantitative fit. Our analysis, however, is regulated by the value of the strong coupling in the infrared region that enters through large x resummation effects, and that can suppress, or absorb, higher twist effects. Large x data therefore indirectly provide a measurement of this quantity that can be compared to extractions from other observables.
description: 10 pages, 3 figures
Crow and Ojibwa game involvement
Creators: name: Fogarty, Sharon Ann
Publisher: name: University of Calgary
Year: 1973
Subjects: subject: E 99 C92 F63 1973
subject: Crow Indians - Games
subject: Chippewa Indians - Games
subject: Crow Indians - Social life and customs
subject: Chippewa Indians - Social life and customs

description: Bibliography: p. 52-55.
Triggering and guiding electric discharge by a train of UV picosecond pulses combined with a long UV pulse
Creators: name: Ionin, A. A.
name: Kudryashov, S. I.
name: Levchenko, A. O.
name: Seleznev, L. V.
name: Shutov, A. V.
name: Sinitsyn, D. V.
name: Smetanin, I. V.
name: Ustinovsky, N. N.
name: Zvorykin, V. D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Non-self-sustained electric discharge and electric breakdown were triggered and guided by a train of picosecond UV pulses overlapped with a long free-running UV pulse of a hybrid Ti:Sapphire-KrF laser facility. Photocurrent sustained by this train is two orders of magnitude higher, and electric breakdown distance is twice longer than those for the discharge triggered by the long UV pulse only.
description: 6 pages, 3 figures
Physics-Informed Neural Network Method for Parabolic Differential Equations with Sharply Perturbed Initial Conditions
Creators: name: Zong, Yifei
name: He, QiZhi
name: Tartakovsky, Alexandre M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 35K99

description: In this paper, we develop a physics-informed neural network (PINN) model for parabolic problems with a sharply perturbed initial condition. As an example of a parabolic problem, we consider the advection-dispersion equation (ADE) with a point (Gaussian) source initial condition. In the $d$-dimensional ADE, perturbations in the initial condition decay with time $t$ as $t^{-d/2}$, which can cause a large approximation error in the PINN solution. Localized large gradients in the ADE solution make the (common in PINN) Latin hypercube sampling of the equation's residual highly inefficient. Finally, the PINN solution of parabolic equations is sensitive to the choice of weights in the loss function. We propose a normalized form of ADE where the initial perturbation of the solution does not decrease in amplitude and demonstrate that this normalization significantly reduces the PINN approximation error. We propose criteria for weights in the loss function that produce a more accurate PINN solution than those obtained with the weights selected via other methods. Finally, we proposed an adaptive sampling scheme that significantly reduces the PINN solution error for the same number of the sampling (residual) points. We demonstrate the accuracy of the proposed PINN model for forward, inverse, and backward ADEs.
Magnetic states and optical properties of single-layer carbon-doped hexagonal boron nitride
Creators: name: Park, Hyoungki
name: Wadehra, Amita
name: Wilkins, John W.
name: Neto, Antonio H. Castro
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: We show that carbon-doped hexagonal boron nitride (h-BN) has extraordinary properties with many possible applications. We demonstrate that the substitution-induced impurity states, associated with carbon atoms, and their interactions dictate the electronic structure and properties of C-doped h-BN. Furthermore, we show that stacking of localized impurity states in small C clusters embedded in h-BN forms a set of discrete energy levels in the wide gap of h-BN. The electronic structures of these C clusters have a plethora of applications in optics, magneto-optics, and opto-electronics.
Continuum random-phase approximation for (n,γ) reactions on neutron-rich nuclei: collective effects and resonances
Creators: name: Saito, Teruyuki
name: Matsuo, Masayuki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We formulate a microscopic theory to calculate cross section of the radiative neutron capture reaction on neutron-rich nuclei using the continuum random-phase approximation (cRPA) to the time-dependent density functional theory (TDDFT). With an intension of applying to the r-process, for which the statistical reaction model may not be appropriate, we describe the transition between a initial state of incident neutron and a final state of the gamma decay by means of a single many-body framework of the cRPA-TDDFT. With the cRPA approach, it is possible to describe various excitation modes present in the $(n,γ)$ reaction, including soft dipole excitation, the giant resonances as well as non-collective excitations and the single-particle resonances. Furthermore, it enables us to describe the $(n,γ)$ reaction where the final states of the gamma transition are low-lying surface vibrational states. We demonstrate the theory by performing numerical calculation for the reaction $^{139}{\rm Sn} (n,γ) ^{140}{\rm Sn}$. We discuss various new features which are beyond the single-particle model; presence of narrow and wide resonances originating from non-collective and collective excitations and roles of low-lying quadrupole and octupole vibrational states.
Mimosa corynadenia Britton & Rose
Creators: name: Margoth Atahuachi
name: M. Leontien Van Der Bent
name: John R. I. Wood
name: Gwilym P. Lewis
name: Colin E. Hughes
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Magnoliophyta
Magnoliopsida
Fabales
Fabaceae
Mimosa
Mimosa corynadenia

description: 14. Mimosa corynadenia Britton & Rose
 A single collection from the Agronomy faculty at Trinidad, Beni and possibly introduced there in cultivation / weedy naturalized population (label suggests ‘very abundant’) and the known distribution inexplicable geographically (Barneby 1991)— Krapovickas & Schinini 34671, NY.
description: Published as part of Margoth Atahuachi, M. Leontien Van Der Bent, John R. I. Wood, Gwilym P. Lewis & Colin E. Hughes, 2016, Bolivian Mimosa (Leguminosae, Mimosoideae): three new species and a species checklist, pp. 201-222 in Phytotaxa 260 (3) on page 213, DOI: 10.11646/phytotaxa.260.3.1, http://zenodo.org/record/192175
Gaussian Two-way Relay Channel with Private Information for the Relay
Creators: name: Ho, Chin Keong
name: Gowda, Kiran T.
name: Sun, Sumei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We introduce a generalized two-way relay channel where two sources exchange information (not necessarily of the same rate) with help from a relay, and each source additionally sends private information to the relay. We consider the Gaussian setting where all point-to-point links are Gaussian channels. For this channel, we consider a two-phase protocol consisting of a multiple access channel (MAC) phase and a broadcast channel (BC) phase. We propose a general decode-and-forward (DF) scheme where the MAC phase is related to computation over MAC, while the BC phase is related to BC with receiver side information. In the MAC phase, we time share a capacity-achieving code for the MAC and a superposition code with a lattice code as its component code. We show that the proposed DF scheme is near optimal for any channel conditions, in that it achieves rates within half bit of the capacity region of the two-phase protocol.
description: 6 pages, 3 figures, accepted for publication in IEEE Transactions on Communications
Code Comparison in Galaxy Scale Simulations with Resolved Supernova Feedback: Lagrangian vs. Eulerian Methods
Creators: name: Hu, Chia-Yu
name: Smith, Matthew C.
name: Teyssier, Romain
name: Bryan, Greg L.
name: Verbeke, Robbert
name: Emerick, Andrew
name: Somerville, Rachel S.
name: Burkhart, Blakesley
name: Li, Yuan
name: Forbes, John C.
name: Starkenburg, Tjitske
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a suite of high-resolution simulations of an isolated dwarf galaxy using four different hydrodynamical codes: {\sc Gizmo}, {\sc Arepo}, {\sc Gadget}, and {\sc Ramses}. All codes adopt the same physical model which includes radiative cooling, photoelectric heating, star formation, and supernova (SN) feedback. Individual SN explosions are directly resolved without resorting to sub-grid models, eliminating one of the major uncertainties in cosmological simulations. We find reasonable agreement on the time-averaged star formation rates as well as the joint density-temperature distributions between all codes. However, the Lagrangian codes show significantly burstier star formation, larger supernova-driven bubbles, and stronger galactic outflows compared to the Eulerian code. This is caused by the behavior in the dense, collapsing gas clouds when the Jeans length becomes unresolved: gas in Lagrangian codes collapses to much higher densities than in Eulerian codes, as the latter is stabilized by the minimal cell size. Therefore, more of the gas cloud is converted to stars and SNe are much more clustered in the Lagrangian models, amplifying their dynamical impact. The differences between Lagrangian and Eulerian codes can be reduced by adopting a higher star formation efficiency in Eulerian codes, which significantly enhances SN clustering in the latter. Adopting a zero SN delay time reduces burstiness in all codes, resulting in vanishing outflows as SN clustering is suppressed.
description: accepted version by ApJ (including a new simulation in Appendix B suggested by the referee)
The Cosmological word: Thomas Trahern and the neo-platonic tradition
Creators: name: Isaac, Barry M.
Publisher: name: University of Calgary
Year: 1975
Subjects: subject: PR 3736 T7 Z68 1975 Microfiche
subject: Traherne, Thomas, d.1674 - Criticism and interpretation
subject: Neoplatonism

description: Bibliography: p. 139-145.
Employment Training/Employment Action Comparison Group Study, 1980-1995
Creators: name: Stratford, N.
name: White, M.
name: Payne, J.
name: Hales, J. M.
name: Lissenburgh, S.
Publisher: name: UK Data Service
Year: 1999

description: The Employment Department commissioned the study to provide an estimate of the effect of participating on adult training programmes. The subsequent and previous labour market experiences of people who had participated on 'Employment Training' (ET) or 'Employment Action' (EA) programmes were recorded in interviews conducted in May 1993, March 1994, and in January to March 1995. A matched comparison sample was selected in the same geographical areas, based on the start date and duration of a spell of unemployment. The comparison sample's labour market history was recorded in interviews conducted in March 1994 and January-March 1995.
Light-Front Holography, Light-Front Wavefunctions, and Novel QCD Phenomena
Creators: name: Brodsky, Stanley J.
name: de Teramond, Guy F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Light-Front Holography, a remarkable feature of the AdS/CFT correspondence, maps amplitudes in anti-de Sitter (AdS) space to frame-independent light-front wavefunctions of hadrons in physical space-time. The model leads to an effective confining light-front QCD Hamiltonian and a single-variable light-front Schrodinger equation which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. The coordinate z in AdS space is identified with a Lorentz-invariant coordinate zeta which measures the separation of the constituents within a hadron at equal light-front time and determines the off-shell dynamics of the bound-state wavefunctions and the fall-off in the invariant mass of the constituents. The soft-wall holographic model, modified by a positive-sign dilaton metric, leads to a remarkable one-parameter description of nonperturbative hadron dynamics -- a semi-classical frame-independent first approximation to the spectra and light-front wavefunctions of meson and baryons. The model predicts a Regge spectrum of linear trajectories with the same slope in the leading orbital angular momentum L of hadrons and the radial quantum number n. The hadron eigensolutions projected on the free Fock basis provides the complete set of valence and non-valence light-front Fock state wavefunctions which describe the hadron's momentum and spin distributions needed to compute measures of hadron structure at the quark and gluon level. The effective confining potential also creates quark- antiquark pairs. The AdS/QCD model can be systematically improved by using its complete orthonormal solutions to diagonalize the full QCD light-front Hamiltonian or by applying the Lippmann-Schwinger method to systematically include the QCD interaction terms. A new perspective on quark and gluon condensates is also presented.
description: Presented at LIGHTCONE 2011, 23 - 27 May, 2011, Dallas, TX
Inner journey: a study of Henry Vaughan's Silex Scintillans
Creators: name: Campbell, Margaret Florence
Publisher: name: University of Calgary
Year: 1970
Subjects: subject: PR 3742 S5 C34 1970 Microfilm
subject: Vaughan, Henry, 1622-1695. Silex Scintillans

description: Bibliography: p. 145-148.
Unitarity of Symplectic Fermion in $α$-vacua with Negative Central Charge
Creators: name: Ryu, Shinsei
name: Yoon, Junggi
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the two-dimensional free symplectic fermion with anti-periodic boundary condition. This model has negative norm states with naive inner product. This negative norm problem can be cured by introducing a new inner product. We demonstrate that this new inner product follows from the connection between the path integral formalism and the operator formalism. This model has negative central charge, $c=-2$, and we clarify how CFT$_2$ with negative central charge can have the non-negative norm. We introduce $α$-vacua in which the Hamiltonian is seemingly non-Hermitian. In spite of non-Hermiticity we find that the energy spectrum is real. We also compare a correlation function with respect to the $α$-vacua with that of the de Sitter space.
description: 5 pages + appendices; v2: typos corrected, 2 figures added
Youth Cohort Study : Special Survey of 19-20 Year Olds, 1991-1995
Creators: name: Stratford, N.
name: Hales, J. M.
Publisher: name: UK Data Service
Year: 1999

description: The aim of this study was to to collect information from a group of young people covering their experiences from the age of 16 to 19-20 years. This was done by means of a follow-up survey of some of the original respondents (and non-respondents) from the Youth Cohort Study of England and Wales 1992-1994, Cohort Six Sweeps One to Three (held at the Data Archive under SN:3532).
Mimosa craspedisetosa Fortunato & Palese
Creators: name: Margoth Atahuachi
name: M. Leontien Van Der Bent
name: John R. I. Wood
name: Gwilym P. Lewis
name: Colin E. Hughes
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Magnoliophyta
Magnoliopsida
Fabales
Fabaceae
Mimosa
Mimosa craspedisetosa

description: 15. ** § Mimosa craspedisetosa Fortunato & Palese
 Described in 1999 based on incomplete material (fruiting only, the flowers at that time unknown). J.R.I. Wood et al. 22858 (LPB, K, USZ) is apparently the first flowering collection and confirms placement in ser. Leiocarpae of sect. Batocaulon as proposed by Fortunato & Palese (1999).This placement is further supported by its robustly supported inclusion in Clade N of the molecular phylogeny of Simon et al. (2011), which includes ser. Leiocarpae pro parte. This species is now recorded from four localities in eastern Bolivia: Cerro San Miguel, the type locality; Quimome, old rd to El Tinto (J.R.I. Wood et al. 22858, LPB, K, USZ ); 60km E of Roboré (J.R.I. Wood et al. 24488; J.R.I. Wood & Pozo 26084; J.R.I. Wood 27127, LPB, K, USZ) and Taperas (J.R.I. Wood et al. 27874, LPB, K, USZ). This suggests that this species is perhaps restricted to Cerrado Chaqueño (Abayoy) habitats rather than being restricted to Chaco woodland as originally described. Although M. craspedisetosa is still, as far as known, endemic to eastern Bolivia, it appears to be spreading along the line of the road from Santa Cruz to Brazil (Wood 2011), the population at Taperas being found for the first time in 2013 in an area visited frequently in earlier years.
description: Published as part of Margoth Atahuachi, M. Leontien Van Der Bent, John R. I. Wood, Gwilym P. Lewis & Colin E. Hughes, 2016, Bolivian Mimosa (Leguminosae, Mimosoideae): three new species and a species checklist, pp. 201-222 in Phytotaxa 260 (3) on page 213, DOI: 10.11646/phytotaxa.260.3.1, http://zenodo.org/record/192175
MacNeille completion and profinite completion can coincide on finitely generated modal algebras
Creators: name: Vosmaer, Jacob
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 06E25 (Primary) 06B23, 03B45, 22A30 (Secondary)

description: Following Bezhanishvili & Vosmaer, we confirm a conjecture of Yde Venema by piecing together results from various authors. Specifically, we show that if $\mathbb{A}$ is a residually finite, finitely generated modal algebra such that $\operatorname{HSP}(\mathbb{A})$ has equationally definable principal congruences, then the profinite completion of $\mathbb{A}$ is isomorphic to its MacNeille completion, and $\Diamond$ is smooth. Specific examples of such modal algebras are the free $\mathbf{K4}$-algebra and the free $\mathbf{PDL}$-algebra.
description: 5 pages
Employers' Recruitment Practices : The 1992 Survey
Creators: name: Hales, J. M.
Publisher: name: UK Data Service
Year: 1999

description: The specific aims of this study were as follows :
 to provide Employment Service economists with data to update estimates of the quantifiable resource and exchequer costs and benefits of the Employment Service's placing activities;
 to obtain a comprehensive account of employers' current recruitment practices in order to show whether there were gaps or duplications in the service provided by the Employment Service;
 to assess in the wider labour market context the appropriateness of employers' current recruitment activities;
 to assess the scope for the Employment Service to influence employers' behaviour with a view to increasing the efficiency of operation of labour markets.
 More generally, the research was intended to provide an understanding of employers' use and perception of the various recruitment channels available to them. Such information would help inform decisions about the direction and marketing of the Employment Service in the 1990s. It would also help to show to what extent the public receives value for the money it invests in the service.

 Previous similar surveys were conducted in 1982 and 1988, but these are not held at the Data Archive. An earlier study, Survey of Employers Recruitment Practices, 1976-1977, carried out by SCPR on behalf of the Employment Service Agency (then part of the Manpower Services Commission) is available at the Archive under SN:1412.
The City and the subcommunity: the Chinese of Calgary
Creators: name: Baureiss, Gunter A.
Publisher: name: University of Calgary
Year: 1971
Subjects: subject: HT 215 B36 1971 Microfilm
subject: Sociology, Urban
subject: Chinese - Alberta - Calgary

description: Bibliography: p. 147-151.
description: The thesis examines the Chinese of Calgary as an ethnic and status community. They form a subcommunity within the larger community of Calgary. The theory of ethnic and status community as developed by Max Weber, R. M. Maclver, Don Martindale and other sociologists was employed in this inquiry. Data were obtained from libraries and archives, interviews, observation, and by means of a self-administered questionnaire . Historical data supported the hypothesis that the formation of an ethnic community within the host community is a result of two distinct processes: (1) the permission given to the alien to enter the host community but, at the same time, denying him access to certain major values of the host community, and (2) the establishment of a separate social and cultural identity because of the peculiarity of his culture and institutions. However, once the ethnic community is formed, its continuation depends on several factors, such as the availability of ethnic organizations, social climate, and the qualities of the alien culture. Findings revealed that the Chinese of Calgary form an ethnic and status community within the larger community of Calgary. The Chinese retain their customs, language, feasts, and festivals, institutions, and organizations; they interact more with other Chinese than with non-Chinese; they overwhelmingly choose Chinese organizations in which they participate. As such they form a subcommunity maintaining their distinct ethnic identity. During the process of ethnic community formation, some specific status differences among the Chinese became crystalized. Wealth, power, and esteem are monopolized by a few. The Chinese community has developed its typical avenues for attaining power and esteem, within their own as well as the host community.
On the expected purity of photometric galaxy surveys targeting the Cosmic Dawn
Creators: name: Furlanetto, Steven R.
name: Mirocha, Jordan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Over the last three decades, photometric galaxy selection using the Lyman-break technique has transformed our understanding of the high-z Universe, providing large samples of galaxies at 3 < z < 8 with relatively small contamination. With the advent of the James Webb Space Telescope, the Lyman-break technique has now been extended to z ~ 17. However, the purity of the resulting samples has not been tested. Here we use a simple model, built on the robust foundation of the dark matter halo mass function, to show that the expected level of contamination rises dramatically at z > 10, especially for luminous galaxies, placing stringent requirements on the selection process. The most luminous sources at z > 12 are likely at least ten thousand times rarer than potential contaminants, so extensive spectroscopic followup campaigns may be required to identify a small number of target sources.
description: 6 pages, 2 figures, submitted to MNRAS
Turbulent magnetic field amplification from spiral SASI modes in core-collapse supernovae
Creators: name: Endeve, E
name: Cardall, C Y
name: Budiardja, R D
name: Mezzacappa, A
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We describe the initial implementation of magnetohydrodynamics (MHD) in our astrophysical simulation code \genasis. Then, we present MHD simulations exploring the capacity of the stationary accretion shock instability (SASI) to generate magnetic fields by adding a weak magnetic field to an initially spherically symmetric fluid configuration that models a stalled shock in the post-bounce supernova environment. Upon perturbation and nonlinear SASI development, shear flows associated with the spiral SASI mode contributes to a widespread and turbulent field amplification mechanism. While the SASI may contribute to neutron star magnetization, these simulations do not show qualitatively new features in the global evolution of the shock as a result of SASI-induced magnetic field amplification.
description: 15 pages, 7 figures, To appear in the Journal of Physics: Conference Series. Proceedings of the IUPAP Conference on Computational Physics (CCP2011)
Universal low-temperature magnetic properties of the classical and quantum dimerized ferromagnetic spin chain
Creators: name: Dmitriev, D. V.
name: Krivnov, V. Ya.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Low-temperature magnetic properties of both classical and quantum dimerized ferromagnetic spin chains are studied. It is shown that at low temperatures the classical dimerized model reduces to the classical uniform model with the effective exchange integral $J_{0}=J(1-δ^{2})$, where $δ$ is the dimerization parameter. The partition function and spin correlation function are calculated by means of mapping to the continuum limit, which is justified at low temperatures. In the continuum limit the calculation of the partition function and spin correlation function is reduced to the eigenvalue problem of quantum rotator in gravitational field. Quantum model is studied using Dyson-Maleev representation of the spin operators. It is shown that in the long-wavelength limit the Hamiltonian of the quantum dimerized chain reduces to that of the uniform ferromagnetic chain with the effective exchange integral $J_{0}=J(1-δ^{2})$. This fact implies that the known equivalence of the low-temperature magnetic properties of classical and quantum ferromagnetic chains remains for the dimerized chains. The considered model can be generalized to include the next-neighbor antiferromagnetic interaction.
description: 13 pages, 3 figures
Вестник Российского нового университета серия «Сложные системы: модели, анализ, управление»,Выпуск 2 2021
Creators: name: Автономная некоммерческая организация высшего образования «Российский новый университет»
Publisher: name: Автономная некоммерческая организация высшего образования «Российский новый университет»
Year: 2021

description: Вестник Российского нового университета серия «Сложные системы: модели, анализ, управление»,Выпуск 2 2021
Kinetic modelling of rarefied gas flows with radiation
Creators: name: Li, Qi
name: Zeng, Jianan
name: Wu, Lei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Two kinetic models are proposed for high-temperature rarefied (or non-equilibrium) gas flows with radiation. One of the models uses the Boltzmann collision operator to model the translational motion of gas molecules, which has the ability to capture the influence of intermolecular potentials, while the other adopts the relaxation time approximations, which has higher computational efficiency. In the kinetic modelling, not only the transport coefficients such as the shear/bulk viscosity and thermal conductivity but also their fundamental relaxation processes are recovered. Also, the non-equilibrium dynamics of gas flow and radiation are coupled in a self-consistent manner. The two proposed kinetic models are first validated by the direct simulation Monte Carlo method in several non-radiative rarefied gas flows, including the normal shock wave, Fourier flow, Couette flow, and the creep flow driven by the Maxwell demon. Then, the rarefied gas flows with strong radiation are investigated, not only in the above one-dimensional gas flows, but also in the two-dimensional radiative hypersonic flow passing cylinder. In addition to the Knudsen number of gas flow, the influence of the photon Knudsen number and relative radiation strength is scrutinised. It is found that the radiation can make a profound contribution to the total heat transfer on obstacle surface.
description: 34 pages, 15 figures. arXiv admin note: substantial text overlap with arXiv:2201.06855
Mimosa daleoides Benth
Creators: name: Margoth Atahuachi
name: M. Leontien Van Der Bent
name: John R. I. Wood
name: Gwilym P. Lewis
name: Colin E. Hughes
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Magnoliophyta
Magnoliopsida
Fabales
Fabaceae
Mimosa
Mimosa daleoides

description: 16. Mimosa daleoides Benth
A common, widespread and well-known species across SE Brazil, N Argentina, Paraguay and central and eastern Bolivia.
description: Published as part of Margoth Atahuachi, M. Leontien Van Der Bent, John R. I. Wood, Gwilym P. Lewis & Colin E. Hughes, 2016, Bolivian Mimosa (Leguminosae, Mimosoideae): three new species and a species checklist, pp. 201-222 in Phytotaxa 260 (3) on page 213, DOI: 10.11646/phytotaxa.260.3.1, http://zenodo.org/record/192175
Restart Cohort Study, 1989-1991
Creators: name: Hales, J. M.
name: Lakey, J.
name: White, M.
Publisher: name: UK Data Service
Year: 1999

description: The Restart counselling programme was started in mid-1986 with the aim of helping the long-term unemployed to get back into work. The survey was organised to assess the programme, once sufficient time had elapsed for it to have become established.
 The aims of the survey were to describe and measure the impact of Restart on its clients, on the operation of the labour market and the institutions of the labour market, and to describe how Restart was achieving changes.
 A key point of the survey design was a random control sample, that is people eligible for a Restart counselling interview on reaching six months of claimant unemployment, who were not invited for interview.
Finding the Values of Trigonometric Function without the Use of Scientific Calculators: The Case of Tangent Function.
Creators: name: Aga, Tole Fikadu
Publisher: name: Ethiopian Journal of Science and Sustainable Development
Year: 2023

description: In the realm of calculating trigonometric functions, computing the tangent function with a high degree of accuracy and precision without using scientific calculators has been an area of interest and importance. In this article, the author, Tole Fikadu Aga, presents a novel set of formulas that enable the computation of the tangent function values without resorting to scientific calculators. The author's work on this topic was submitted to various academic institutions, and it was received positively, with evaluators recognizing the effectiveness of the formulas. The proposed formulas generate results that exhibit a remarkably high level of accuracy and precision, reproducible up to three decimal places. They are applicable within the respective intervals , and whereby θ is measured in degrees. For angles larger than 90 degrees, the author utilizes the unit circle definition of the function. The paper provides detailed and comprehensive derivations of each formula for every one of the respective intervals and compares their results with the existing tangent function values, utilizing a table method comparison. Taking into account the high degree of accuracy and precision exhibited by these formulas, the author recommends their practical adoption by both students and teachers at all levels of their academic pursuits. Overall, the formulas proposed in this article have the potential to facilitate mathematical calculations and scientific research by providing more accurate and efficient means of calculating tangent function values.
description: Ethiopian Journal of Science and Sustainable Development, Vol 11 No 1 (2024): EJSSD