cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Canalization acoustic phonon polaritons in metal-MoO3-metal sandwiched structures for nano-light guiding and manipulation
Creators: name: Yan, Qizhi
name: Chen, Runkun
name: Yuan, Zhu
name: Li, Peining
name: Zhang, Xinliang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We theoretically propose and study in-plane anisotropic acoustic phonon polaritons (APhPs) based on a layered structure consisting of a monolayer (or few layers) α-phase molybdenum trioxide (α-MoO3) sandwiched between two metal layers. We find that the APhPs in the proposed sandwiched structures are a canalization (highly directional) electromagnetic mode propagating along with the layers and at the same time exhibit extreme electromagnetic-field confinement surpassing any other type of phonon-polariton modes. When a double layer of α-MoO3 is sandwiched by two Au layers, twisting the two α-MoO3 layers can adjust the interlayer polaritonic coupling and thus manipulate the in-plane propagation of the highly confined APhPs. Our results illustrate that the metal-MoO3-metal sandwiched structures are a promising platform for light guiding and manipulation at ultimate scale.
description: 7 pages, 4 figures
Letter from Kathleen Raine to Robin Skelton, November 06, [between 1953 and 1990]
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684
subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718

description: Part of a collection of correspondence from Kathleen Raine to Robin Skelton. Skelton was a British poet, academic, anthologist, and practicing Wiccan. He taught at Manchester University before emigrating to Canada in 1963, where he taught creative writing at the University of Victoria and started the literary magazine The Malahat Review. Also included are some letters to Skelton’s wife Sylvia, and his daughters. Spanning close to forty-five years, the correspondence discusses poetry, writing, and philosophy; particularly Platonism and Neoplatonism. Raine often refers to the writings of William Blake and W. B. Yeats. Many letters also mention contemporary literary figures at the time including: Herbert Read, Peter Russell, Liam Miller, and Thurairajah Tambimuttu. In this letter Raine compliments Skelton's work, describes a trip to Arizona, and discusses work with recent acquaintances.
title: Model-based edge clustering for networks
title: theory and applications
titleType: Subtitle
Creators: name: Li, Haomin
Publisher: name: University of Iowa
Year: 2024
Subjects: Clustering
Community Detection
Edge Thresholding
Latent Space Models
Network Analysis
Source Detection

description: This dissertation explores advanced methodologies for clustering in network analysis, with a particular focus on edge clustering algorithms. Traditional network analysis has primarily centered around node-based methods, but edge clustering offers a more nuanced understanding of relationships between entities. The work introduces several novel extensions to existing edge clustering frameworks, addressing key limitations such as the neglect of edge weights and the challenge of noisy edges—random connections that obscure the underlying network structure.
description: The Weighted Latent Space Edge Clustering (WLSEC) model is presented as an extension of the Latent Space Edge Clustering (LSEC) model, incorporating edge weights to capture the varying strength of relationships between nodes. This model allows for a more detailed and accurate representation of networks where relationships differ in intensity, such as patient transfer networks in healthcare. The dissertation further advances this work by introducing the Weighted Edge Clustering Adjusting for Noise (WECAN) model, which identifies and mitigates the impact of noisy edges. By distinguishing between meaningful and spurious edges, WECAN enhances the accuracy and interpretability of the clustering process.
description: Additionally, this research applies edge clustering methodologies to real-world problems, including the multiple source detection (MSD) problem in epidemiology. The MSD problem involves identifying multiple origins of diffusion processes, such as the spread of diseases or information. The integration of edge clustering with traditional MSD frameworks leads to significant improvements in detecting multiple sources within networks.
description: The effectiveness of the proposed models is validated through extensive simulation studies and real-world applications, demonstrating their superiority over traditional node-based methods. This work not only provides theoretical advancements in edge clustering algorithms but also offers practical tools for analyzing complex networks in fields such as healthcare and epidemiology.
An Adaptive E-Learning System Using Justification Based Truth Maintenance System
Creators: name: TahirMohammadAli
name: Rehman, Attique Ur
name: AliNawaz
name: Butt, Wasi Haider
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: In most E learning systems educational activities are presented in a static way without bearing in mind the particulars or student levels and skills. Personalization and adaptation of an E learning management system are dependent on the flexibility of the system in providing different learning and content models to individual students based on their characteristics. In this paper we suggest an Adaptive E learning system which is providing adaptability with support of justification based truth maintenance system. The system is accomplished of signifying students with suitable knowledge fillings and customized learning paths based on the students profile interests and previous results. The validation of proposed framework is performed by meta model.
A minimal set of invariants as a systematic approach to higher order gravity models
Creators: name: Ishak, Mustapha
name: Moldenhauer, Jacob
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Higher-order gravity models have been recently the subject of much attention in the context of cosmic acceleration. These models are derived by adding various curvature invariants to the Einstein-Hilbert action. Several studies showed that these models can have late-time self-acceleration and could, in some cases, fit various observational constraints. In view of the infinite spectrum of invariants that could be built from curvature tensors, we propose here a method based on minimal sets of independent invariants as a possible route for a systematic approach to these models. We explore a connection made between theorems on bases in invariants theory in relativity and higher-order cosmological models. A dynamical system analysis is performed and some models with accelerating attractors are discussed. The asymptotic behavior of the models is also studied using analytical calculations.
description: 15 pages, 4 figures, matches JCAP accepted version
Resonant backreaction in axion inflation
Creators: name: Welling, Yvette Maria
name: Domcke, Valerie Fiona
name: Westphal, Alexander
name: Guidetti, Veronica
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2020

description: DESY Virtual Theory Forum, Hamburg, DESY, Germany, 22 Sep 2020 - 25 Sep 2020
description: Axion inflation entails a coupling of the inflaton field to gauge fields through the Chern-Simons term. This results in a strong gauge field production during inflation, which backreacts on the inflaton equation of motion. We show that this strongly non-linear system generically experiences a resonant enhancement of the gauge field production, resulting in oscillatory features in the inflaton velocity as well as in the gauge field spectrum. The gauge fields source a strongly enhanced scalar power spectrum at small scales, exceeding previous estimates. For appropriate parameter choices, the collapse of these over-dense regions can lead to a large population of (light) primordial black holes with remarkable phenomenological consequences.
Double Monodromy Inflation: A Gravity Waves Factory for CMB-S4, LiteBIRD and LISA
Creators: name: Westphal, Alexander
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2021

description: QU Day 1/2021 of the Quantum Universe Excellence Cluster, Hamburg via online seminar, DESY Hamburg, Germany, 19 Jan 2021 - 19 Jan 2021
Supplementary Information from Invasive snake causes massive reduction of all endemic herpetofauna on Gran Canaria
Creators: name: Piquet, Julien C.
name: López-Darias, Marta
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: The supplementary information file includes seven sections of supplementary infromation about the methods, including: the inclusion of abiotic variables' influence on reptile abundance estimation, lizard photoidentification, specificities of the SECR and distance sampling methods, R Code, Site-level densities from SECR, a the spatial distribution of reptile abundance, and expanded views from each study zone
Analytic hierarchy process for inventory classification and purchasing order policy for class a inventory: A case study
Creators: name: Busaba Phruksaphanrat
name: Piyanan Khompilo
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2013
Subjects: Analytic hierarchy process (AHP),Inventory classification,ABC classification,Purchasing policy,Lot sizing

description: 2, 40, KKU Engineering Journal
Neutron-Proton cross section measurements in the intermediate energy range
Creators: name: Keeler, Richard Kirk
Publisher: name: University of British Columbia
Year: 2010

description: Measurements of the angular distribution and total reaction rate in neutron-proton scattering are described. The emphasis of this work has been to obtain an accurate normalization of the distribution, which is difficult to achieve with neutral beams. Nearly monoenergetic neutrons from the d(p,n)pp reaction were scattered from a liquid hydrogen target. The neutron beam energy was determined from the time of flight with respect to the radio frequency signal of the TRIUMF cyclotron. The differential cross section was measured at 319 and 493 MeV from 10 to 180 degrees in the centre of mass (CM.). Calibrated neutron beam monitors upstream of the scattering target provided an absolute normalization over the whole angular range. Between 10 and 100 degrees CM. a neutron detector consisting of a charged particle veto, a carbon convertor and two trigger scintillators sandwiching 7 multiwire proportional chambers was used to select elastic neutrons by time of flight techniques. The neutron angular distribution was measured with an average precision of 5% and an uncertainty on the normalization of 1.3%. An associated particle experiment (neutrons and recoil protons detected in coincidence) determined the efficiency of the neutron detector and the monitors were calibrated by measuring the incident neutron flux with the neutron detector in the beam, i.e. at zero degrees. The recoil protons were detected in the angular range between 60 and 180 degrees CM. with a precision of 1% to 2% and an error on the normalization of 2.8% at 319 MeV and 3.7% at 493 MeV. Elastic events were selected by time of flight and by either a measurement of magnetic rigidity (momentum) or total energy. The absolute normalization of the two experimental techniques is verified by the overlap of the two measurements and by comparing the integrated differential cross section with the measured total cross section. The neutron-proton total cross section was measured at six energies between 200 and 500 MeV by a transmission type experiment to a precision of 1% to 3%. The systematic corrections were small, of the order of 1%, and the statistical errors were increased to include monitor and beam instabilities. The measurements show a smooth quadratic energy dependence. The data was included in a phase shift analysis and a dispersion relation analysis along with the previous world data. Agreement between the real part of the forward scattering amplitude predicted by the phase shift analysis and by the dispersion relation analysis is improved. The errors on the 1=0 (isoscalar) phase shifts are decreased and to a lesser extent on the 1=1 phase shifts. There is a marked improvement in the smooth variation with energy of the 1=0 phase shifts and a better agreement of the higher partial waves with the theoretical predictions of the Paris potential.
Effect of temperature and heating duration of drying on quality of low amylose rice
Creators: name: Jutarop Yardthaisong
name: Somchai Chuan-Udom
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2014
Subjects: Storage, Stale rice, Viscosity of starch, Amylose

description: 1, 41, KKU Engineering Journal
Increase crop diversification with flower strips to improve natural pest control and pollination
Creators: name: Stalenga, Jarosław
name: Radzikowski, Paweł
name: Trugly, Bence
Publisher: name: Zenodo
Year: 2021
Subjects: DiverIMPACTSPA
Strip cropping
Field
Cropping system
Ecosystem services

description: Problem Conventional pest control based on the use of synthetic insecticides is very effective, however this has important negative effects on the environment such as the loss of farmland biodiversity, especially in the group of invertebrates, including many beneficial organisms. Another key problem is the presence of insecticide residues in surface and ground water or, potentially, in harvested products. Solution Flower strips, adapted to particular crops, soil quality and pedoclimatic conditions, can significantly support natural pest control and pollination. Flower strips are a type of ecological compensation area and are defined as strips of species-rich plant mixtures on arable lands. They are aimed of delivering different ecosystem services (mainly natural pest control and pollination) and conserving biodiversity.
โครโมโซมวายกับการศึกษาวิวัฒนาการของมนุษย์
(Y chromosome and the study of human evolution)
Creators: name: Wibhu Kutanan
name: Daoroong Kangwanpong
Publisher: name: Genetics Society of Thailand
Year: 2014
Subjects: โครโมโซมวาย, แฮโปลกรุ๊ป, เชื้อสาย, วิวัฒนาการของมนุษย์, เอเชียตะวันออก, Y chromosome, haplogroup, lineage, human evolution, East Asia

description: 2, 7, Thai Journal of Genetics
The viability of theories with matter coupled to the Ricci scalar
Creators: name: Sotiriou, Thomas P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently there has been a proposal for modified gravitational f(R) actions which include a direct coupling between the matter action and the Ricci scalar, R. Of particular interest is the specific case where both the action and the coupling are linear in R. It is shown that such an action leads to a theory of gravity which includes higher order derivatives of the matter fields without introducing more dynamics in the gravity sector and, therefore, cannot be a viable theory for gravitation.
description: typos corrected, published version
Quantum Flatness in Two-Dimensional CDT Quantum Gravity
Creators: name: Brunekreef, J.
name: Loll, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Flatness -- the absence of spacetime curvature -- is a well-understood property of macroscopic, classical spacetimes in general relativity. The same cannot be said about the concepts of curvature and flatness in nonperturbative quantum gravity, where the microscopic structure of spacetime is not describable in terms of small fluctuations around a fixed background geometry. An interesting case are two-dimensional models of quantum gravity, which lack a classical limit and therefore are maximally "quantum". We investigate the recently introduced quantum Ricci curvature in CDT quantum gravity on a two-dimensional torus, whose quantum geometry could be expected to behave like a flat space on suitably coarse-grained scales. On the basis of Monte Carlo simulations we have performed, with system sizes of up to 600.000 building blocks, this does not seem to be the case. Instead, we find a scale-independent "quantum flatness", without an obvious classical analogue. As part of our study, we develop a criterion that allows us to distinguish between local and global, topological properties of the toroidal quantum system.
description: 33 pages,16 figures
The applicability of causal dissipative hydrodynamics to relativistic heavy ion collisions
Creators: name: Huovinen, Pasi
name: Molnar, Denes
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We utilize nonequilibrium covariant transport theory to determine the region of validity of causal Israel-Stewart dissipative hydrodynamics (IS) and Navier-Stokes theory (NS) for relativistic heavy ion physics applications. A massless ideal gas with 2->2 interactions is considered in a 0+1D Bjorken scenario, appropriate for the early longitudinal expansion stage of the collision. In the scale invariant case of a constant shear viscosity to entropy density ratio eta/s ~ const, we find that Israel-Stewart theory is 10% accurate in calculating dissipative effects if initially the expansion timescale exceeds half the transport mean free path tau0/lambda0 > ~2. The same accuracy with Navier-Stokes requires three times larger tau0/lambda0 > ~6. For dynamics driven by a constant cross section, on the other hand, about 50% larger tau0/lambda0 > ~3 (IS) and ~9 (NS) are needed. For typical applications at RHIC energies s_{NN}**(1/2) ~ 100-200 GeV, these limits imply that even the Israel-Stewart approach becomes marginal when eta/s > ~0.15. In addition, we find that the 'naive' approximation to Israel-Stewart theory, which neglects products of gradients and dissipative quantities, has an even smaller range of applicability than Navier-Stokes. We also obtain analytic Israel-Stewart and Navier-Stokes solutions in 0+1D, and present further tests for numerical dissipative hydrodynamics codes in 1+1, 2+1, and 3+1D based on generalized conservation laws.
description: 30 pages, 26 EPS figures, revtex stylefile
On the peculiar properties of the narrow-line quasar PG 1543+489
Creators: name: Vignali, C.
name: Piconcelli, E.
name: Bianchi, S.
name: Miniutti, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the analysis of four XMM-Newton observations of the narrow-line quasar PG 1543+489 at z=0.400 carried out over a rest-frame time-scale of about three years. The X-ray spectrum is characterized by a broad, relativistic iron K_alpha emission line and a steep photon index, which can be both explained by a ionized reflection model, where the source of X-ray photons is presumably very close to the black hole. If this were the case, strong light-bending effects are expected, and actually they provide the most plausible explanation for the large equivalent width (EW=3.1+/-0.8 keV in the source rest frame) of the iron line. Although the light-bending model provides a good description of the X-ray data of PG 1543+489, it is not possible to rule out an absorption model, where obscuring matter partially covers the X-ray source. However, the apparent lack of variations in the properties of the absorber over the time-scale probed by our observations may indicate that this model is less likely.
description: 9 pages, 5 figures, 3 tables, accepted for publication by MNRAS
Fife, A.J. 2014: Calymperaceae. In: Heenan, P.B.; Breitwieser, I.; Wilton, A.D. Flora of New Zealand - Mosses. Fascicle 12. Manaaki Whenua Press, Lincoln.
Creators: name: Fife, Allan
Publisher: name: Manaaki Whenua Press
Year: 2014

Abstract
Use of a Torsion Pendulum Balance to Detect and Characterize What May Be a Human Bioenergy Field
Creators: name: Hansen, J. Norman
name: Lieberman, Joshua A.
Publisher: name: Digital Repository at the University of Maryland
Year: 2013
Subjects: John Norman Hansen
psychokinesis
Treefall
http://hdl.handle.net/1903/9421
torsion pendulum
biofield
bioenergy

description: Whereas the concept of bioenergy fields is thousands of years old, their existence has never been verified by scientific experiments designed to detect and measure them; so bioenergy fields have no scientific credibility. The instruments used for those experiments typically detect components of the electromagnetic spectrum. The experiments presented here utilize a detector that instead is sensitive to actual “pushing” forces that are capable of altering the momentum of a physical object such as a simple torsion pendulum balance that is suspended above a seated human subject. The experimental design includes a video camera connected to a computer that can detect and measure the pendulum movements with high precision, and store this information in a data file for later analysis. Experiments show that the pendulum detects and measures substantial forces that drastically alter the motions of the pendulum when a subject is seated under it. The following effects are consistently observed with every subject in every experiment performed up to now: 1) Substantial shifts of the center of oscillation of the pendulum; shifts as large as 2.2 cm (7 deg) requiring a force that is equivalent to 45 mg are observed, 2) Many new frequencies of oscillation of the pendulum are introduced when a subject is present, 3) Dramatic changes in the amplitudes of oscillation of the pendulum are observed throughout the experiment; increasing, decreasing, and increasing again, in patterns that resemble chemical relaxation processes, 4) These shifts of the center of oscillation, the new frequencies of oscillation, and the changes in amplitudes all persist for 30–60 min after the subject has left the pendulum. This is inconsistent with the physics of a simple harmonic oscillator such as a torsion pendulum, which should return to simple harmonic oscillation immediately after any exterior disturbances are discontinued.  After conducting control experiments to rule out effects of air currents and other artifacts, it is concluded that the effects are exerted by some kind of force field that is generated by the subject seated under the pendulum. We know of no force, such as one within the electromagnetic spectrum that can account for these results. It may be that a conventional explanation for these surprising results will be discovered, but it is possible that we have observed a phenomenon that will require the development of new theoretical concepts. For now, it is important that other investigators repeat and extend our observations.
title: Ð Ð°ÑÑÐµÑ ÑÐ»ÐµÐºÑÑÐ¾Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ð³Ð¾ Ð¿Ð¾Ð»Ñ. Ð§. 1
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: ÐÐ°ÑÐ¿ÐµÐ½ÐºÐ¾, ÐÐµÐ¾Ð½Ð¸Ð´
name: Ð¯ÑÐ¼Ð°ÑÐºÐ¸Ð½, ÐÐ¸ÑÐ°Ð¸Ð»
Publisher: name: ÐÐ·Ð´-Ð²Ð¾ Ð¡ÐÐ±ÐÐ¢Ð£
Year: 1997
Subjects: Ð­Ð»ÐµÐºÑÑÐ¾Ð¼Ð°Ð³Ð½Ð¸ÑÐ½Ð¾Ðµ Ð¿Ð¾Ð»Ðµ

description: ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÐµÑ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð¼Ñ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°ÑÐµÐ»ÑÐ½Ð¾Ð¼Ñ ÑÑÐ°Ð½Ð´Ð°ÑÑÑ
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Letter from Kathleen Raine to Robin Skelton, December 02, [between 1953 and 1990]
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684
subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884

description: Part of a collection of correspondence from Kathleen Raine to Robin Skelton. Skelton was a British poet, academic, anthologist, and practicing Wiccan. He taught at Manchester University before emigrating to Canada in 1963, where he taught creative writing at the University of Victoria and started the literary magazine The Malahat Review. Also included are some letters to Skelton’s wife Sylvia, and his daughters. Spanning close to forty-five years, the correspondence discusses poetry, writing, and philosophy; particularly Platonism and Neoplatonism. Raine often refers to the writings of William Blake and W. B. Yeats. Many letters also mention contemporary literary figures at the time including: Herbert Read, Peter Russell, Liam Miller, and Thurairajah Tambimuttu. In this letter, Raine discusses Skelton's plan for a book about Herbert Read.
A Lyman Break Galaxy Candidate at z~9
Creators: name: Henry, Alaina L.
name: Malkan, Matthew A.
name: Colbert, James W.
name: Siana, Brian
name: Teplitz, Harry I.
name: McCarthy, Patrick
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a z~9 Lyman Break Galaxy (LBG) candidate, selected from the NICMOS Parallel Imaging Survey as a J-dropout with J110 - H160 = 1.7. Spitzer/IRAC photometry reveals that the galaxy has a blue H160 - 3.6 um color, and a spectral break between 3.6 and 4.5 um. We interpret this break as the Balmer break, and derive a best-fit photometric redshift of z~9. We use Monte Carlo simulations to test the significance of this photometric redshift, and show a 96% probability of z>7. We estimate a lower limit to the comoving number density of such galaxies at z~9 of phi > 3.8 x 10^{-6} Mpc^{-3}. If the high redshift of this galaxy is confirmed, this will indicate that the luminous end of the rest-frame UV luminosity function has not evolved substantially from z~ 9 to z~3. Still, some small degeneracy remains between this z~9 model and models at z~2-3; deep optical imaging (reaching I ~ 29 AB) can rule out the lower-z models.
description: Accepted to ApJ Letters
Tachyon Mediated Non-Gaussianity
Creators: name: Dutta, Bhaskar
name: Kumar, Jason
name: Leblond, Louis
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe a general scenario where primordial non-Gaussian curvature perturbations are generated in models with extra scalar fields. The extra scalars communicate to the inflaton sector mainly through the tachyonic (waterfall) field condensing at the end of hybrid inflation. These models can yield significant non-Gaussianity of the local shape, and both signs of the bispectrum can be obtained. These models have cosmic strings and a nearly flat power spectrum, which together have been recently shown to be a good fit to WMAP data. We illustrate with a model of inflation inspired from intersecting brane models.
description: 6 pages; v3 discussion about loops included, shape of the intrinsic contribution corrected, references added
How to Grow a Healthy Merger Tree
Creators: name: Zhang, Jun
name: Fakhouri, Onsi
name: Ma, Chung-Pei
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate seven Monte Carlo algorithms -- four old and three new -- for constructing merger histories of dark matter halos using the extended Press-Schechter (EPS) formalism based on both the spherical and ellipsoidal collapse models. We compare, side-by-side, the algorithms' abilities at reproducing the analytic EPS conditional (or progenitor) mass function over a broad range of mass and redshift (z=0 to 15). Among the four old algorithms (Lacey & Cole 1993, Kauffmann & White 1993, Somerville & Kolatt 1999, Cole et al 2000), we find that only KW93 produces a progenitor mass function that is consistent with the EPS prediction for all look-back redshifts. The origins of the discrepancies in the other three algorithms are discussed. Our three new algorithms are designed to generate the correct progenitor mass function at each timestep. We show that this is a necessary and sufficient condition for consistency with EPS at any look-back time. We illustrate the differences among the three new algorithms and KW93 by investigating two other conditional statistics: the mass function of the i_{th} most massive progenitors and the mass function for descendants with N_p progenitors.
description: 20 pages, 12 figures, MNRAS in Press
History – Translation – Politics, Graz, 11-14 settembre 2024
Creators: name: Candela, Antonella
Publisher: name: ri.tra | rivista di traduzione: teorie pratiche storie
Year: 2024

description: ri.tra | rivista di traduzione: teorie pratiche storie, No. 2 (2024): rivista di traduzione : teorie pratiche storie
The damping of second sound near the superfluid transition in ⁴He
Creators: name: Robinson, Bradley J.
Publisher: name: University of British Columbia
Year: 2010

description: The attenuation of second sound near the superfluid transition in ⁴He has been determined by measuring the decay time for free oscillations of plane wave modes in a resonant cavity. The results for both the critical exponent and amplitude of the second sound damping coefficient are consistent with the early predictions of Hohenberg, Siggia and Halperin based on renormalization group theory. However, the damping observed in this work is less than the recent predictions of a non-linear renormalization group analysis by Dohm and Folk. The measurements cover the temperature interval 1.8 x 10⁻⁵ ≲ t ≲ 2.1 x 10⁻², where t = (T[sub λ] - T)/T[sub λ]. Fitting the results to a single power law for t < 10⁻³, the critical exponent governing the temperature dependence is found to be 0.31 ± 0.05. If the results are constrained to obey the theoretical asymptotic temperature dependence with an exponent of 0.288, then the amplitude obtained for the damping is 3.7 ± 0.4 cm² s⁻¹. This corresponds to a value for the universal amplitude ratio, R₂, of 0.11 ± 0.01. For t ≳ 10⁻³ the damping departs from the critical behaviour, and increases to obtain the values previously observed by Hanson and Pellam for t ≳ 10⁻².
Unwrapping Closed Timelike Curves
Creators: name: Slobodov, Sergei
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Closed timelike curves (CTCs) appear in many solutions of the Einstein equation, even with reasonable matter sources. These solutions appear to violate causality and so are considered problematic. Since CTCs reflect the global properties of a spacetime, one can attempt to change its topology, without changing its geometry, in such a way that the former CTCs are no longer closed in the new spacetime. This procedure is informally known as unwrapping. However, changes in global identifications tend to lead to local effects, and unwrapping is no exception, as it introduces a special kind of singularity, called quasi-regular. This "unwrapping" singularity is similar to the string singularities. We give two examples of unwrapping of essentially 2+1 dimensional spacetimes with CTCs, the Gott spacetime and the Godel universe. We show that the unwrapped Gott spacetime, while singular, is at least devoid of CTCs. In contrast, the unwrapped Godel spacetime still contains CTCs through every point. A "multiple unwrapping" procedure is devised to remove the remaining circular CTCs. We conclude that, based on the two spacetimes we investigated, CTCs appearing in the solutions of the Einstein equation are not simply a mathematical artifact of coordinate identifications, but are indeed a necessary consequence of General Relativity, provided only that we demand these solutions do not possess naked quasi-regular singularities.
description: 29 pages, 9 figures
Evolution of Kelvin-Helmholtz Instability in the Fan-Spine Topology
Creators: name: Mishra, Sudheer K.
name: Singh, Balveer
name: Srivastava, A. K.
name: Kayshap, Pradeep
name: Dwivedi, B. N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use multiwavelength imaging observations from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) to study the evolution of Kelvin-Helmholtz (K-H) instability in a fan-spine magnetic field configuration. This magnetic topology exists near an active region AR12297 and is rooted in a nearby sunspot. In this magnetic configuration, two layers of cool plasma flow in parallel and interact with each other inside an elongated spine. The slower plasma flow (5 $km s^{-1}$) is the reflected stream along the spine field lines from the top, which interacts with the impulsive plasma upflows (114-144 km s$^{-1}$) from below. This process generates a shear motion and subsequent evolution of the K--H instability. The amplitude and characteristic wavelength of the K-H unstable vortices increase, satisfying the criterion of the fastest growing mode of this instability. We also describe that the velocity difference between two layers and velocity of K-H unstable vortices are greater than the Alfven speed in the second denser layer, which also satisfies the criterion of the growth of K-H instability. In the presence of the magnetic field and sheared counter streaming plasma as observed in the fan-spine topology, we estimate the parametric constant, $Λ\ge$1, that confirms the dominance of velocity shear and the evolution of the linear phase of the K-H instability. This observation indicates that in the presence of complex magnetic field structuring and flows, the fan-spine configuration may evolve into rapid heating, while the connectivity changes due to the fragmentation via the K-H instability.
description: 14 pages, 8 figures, accepted for publication in ApJ
Lynne Bowker: De-mystifying Translation. Introducing Translation to Non-translators
Creators: name: Regattin, Fabio
Publisher: name: ri.tra | rivista di traduzione: teorie pratiche storie
Year: 2024

description: ri.tra | rivista di traduzione: teorie pratiche storie, No. 2 (2024): rivista di traduzione : teorie pratiche storie
La fabbrica dei classici. La traduzione delle letterature straniere e l’editoria milanese, a cura di Alessandra Preda e Nicoletta Vallorani
Creators: name: Romanzi, Andrea
Publisher: name: ri.tra | rivista di traduzione: teorie pratiche storie
Year: 2024

description: ri.tra | rivista di traduzione: teorie pratiche storie, No. 2 (2024): rivista di traduzione : teorie pratiche storie
Jacopo Galavotti e Giacomo Morbiato: Una sola digressione ininterrotta. Cosimo Ortesta poeta e traduttore
Creators: name: Miliucci, Fabrizio
Publisher: name: ri.tra | rivista di traduzione: teorie pratiche storie
Year: 2024

description: ri.tra | rivista di traduzione: teorie pratiche storie, No. 2 (2024): rivista di traduzione : teorie pratiche storie
Large Selmer groups over number fields
Creators: name: Bartel, Alex
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 11G05, 11G40, 20C10

description: Let p be a prime number and M a quadratic number field, M not equal to Q(\sqrt{p}) if p is congruent to 1 modulo 4. We will prove that for any positive integer d there exists a Galois extension F/Q with Galois group D_{2p} and an elliptic curve E/Q such that F contains M and the p-Selmer group of E/F has size at least p^d.
description: 15 pages, final version, to appear in Math. Proc. Cambridge Philos. Soc
Francesca Rubini: Italo Calvino nel mondo. Opere, lingue, paesi
Creators: name: Palermitano, Andrea
Publisher: name: ri.tra | rivista di traduzione: teorie pratiche storie
Year: 2024

description: ri.tra | rivista di traduzione: teorie pratiche storie, No. 2 (2024): rivista di traduzione : teorie pratiche storie
Quarkonium transport in thermal AdS/CFT
Creators: name: Dusling, Kevin
name: Erdmenger, Johanna
name: Kaminski, Matthias
name: Rust, Felix
name: Teaney, Derek
name: Young, Clint
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a heavy meson moving slowly through high temperature non-abelian plasmas. Using a simple dipole effective Lagrangian, we calculate the in-medium mass shift and the drag coefficient of the meson in $\N=4$ Super Yang Mills theory at weak and strong coupling. As anticipated, in the large $N$ limit the mass shift is finite while the drag is suppressed by $1/N^2$ . After comparing results to perturbative QCD estimates (which are also calculated), we reach the conclusion that relative to weak coupling expectations the effect of strong coupling is to reduce the momentum diffusion rate and to {\it increase} the relaxation time by up to a factor of four.
description: 26 + 4 figures
Traduttori e sviluppo della cultura. Sette figure della casa editrice Einaudi, a cura di Aurelia Martelli
Creators: name: Romanzi, Andrea
Publisher: name: ri.tra | rivista di traduzione: teorie pratiche storie
Year: 2024

description: ri.tra | rivista di traduzione: teorie pratiche storie, No. 2 (2024): rivista di traduzione : teorie pratiche storie
On the complete integrability and linearization of nonlinear ordinary differential equations - Part III: Coupled first order equations
Creators: name: Chandrasekar, V. K.
name: Senthilvelan, M.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Continuing our study on the complete integrability of nonlinear ordinary differential equations, in this paper we consider the integrability of a system of coupled first order nonlinear ordinary differential equations (ODEs) of both autonomous and non-autonomous types. For this purpose, we modify the original Prelle-Singer procedure so as to apply it to both autonomous and non-autonomous systems of coupled first order ODEs. We briefly explain the method of finding integrals of motion (time independent as well as time dependent integrals) for two and three coupled first order ODEs by extending the Prelle-Singer(PS) method. From this we try to answer some of the open questions in the original PS method. We also identify integrable cases for the two dimensional Lotka-Volterra system and three-dimensional R$\ddot{o}$ssler system as well as other examples including non-autonomous systems in a straightforward way using this procedure. Finally, we develop a linearization procedure for coupled first order ODEs.
description: added a new section (section 8) and minor revision. Proc. R. Soc. London A (accepted)
ยูโทเปียสมัยใหม่(กว่า):ปฏิสันถารแห่งสถาปัตยกรรมและวิถีเมือง
Creators: name: ผู้ช่วยศาสตราจารย์ คอมกริช ธนะเพทย์
Publisher: name: โรงพิมพ์แห่งจุฬาลงกรณ์มหาวิทยาลัย
Year: 2011
Subjects: ทฤษฎีทางสถาปัตยกรรม,การออกแบบชุมชนเมือง,ยูโทเปีย,วิถีเมือง

description: 60, Academic Journal of Architecture
ชีววิศวกรรมดินกับการป้องกันการกัดเซาะของดิน
Creators: name: สิรินทรา วัณโณ
Publisher: name: โรงพิมพ์แห่งจุฬาลงกรณ์มหาวิทยาลัย
Year: 2011
Subjects: ชีววิศวกรรมดิน,การป้องกันการกัดเซาะ,การกัดเซาะ,โครงสร้างมีชีวิต

description: 60, Academic Journal of Architecture
Anna Baldini: A regola d’arte. Storia e geografia del campo letterario italiano
Creators: name: Fichera, Gabriele
Publisher: name: ri.tra | rivista di traduzione: teorie pratiche storie
Year: 2024

description: ri.tra | rivista di traduzione: teorie pratiche storie, No. 2 (2024): rivista di traduzione : teorie pratiche storie
Toscana bilingue. Per una storia sociale del tradurre medievale, a cura di Antonio Montefusco et al.
Creators: name: De Francesco, Sonia
Publisher: name: ri.tra | rivista di traduzione: teorie pratiche storie
Year: 2024

description: ri.tra | rivista di traduzione: teorie pratiche storie, No. 2 (2024): rivista di traduzione : teorie pratiche storie
Ornella Tajani: Après Berman. Des études de cas pour une critique des traductions littéraires
Creators: name: Buttignol, Elena
Publisher: name: ri.tra | rivista di traduzione: teorie pratiche storie
Year: 2024

description: ri.tra | rivista di traduzione: teorie pratiche storie, No. 2 (2024): rivista di traduzione : teorie pratiche storie
The Unusual Weak-Line Quasar PG1407+265 and its Foreground z~0.7 X-ray Cluster
Creators: name: McDowell, Jonathan C.
name: Siemiginowska, Aneta
name: Ashby, Matthew
name: Blundell, Katherine
name: Gallo, Luigi C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new observations of the odd $z=0.96$ weak-line quasar PG1407+265, and report the discovery of CXOU J140927.9+261813, a $z=0.68$ X-ray cluster. Archival X-ray photometry spanning nearly four decades reveals that PG1407+265 is variable at the 1 dex level on a timescale of years. V-band variability is present with an amplitude less than 0.1 mag. The emission-line properties of PG1407+265 also reveal clear evidence for a powerful inflow or outflow due to near- or super-Eddington accretion, having a mechanical luminosity of order $10^{48}$ erg s$^{-1}$. Our follow-up {\sl Chandra} exposure centered on this object reveal a foreground $z=0.68$ cluster roughly 1' x 1'.5 in extent, offset to the east of PG1407+265, roughly coincident with the $z=0.68$ radio galaxy FIRST J140927.8+261818. This non-cool-core cluster contributes about 10\% of the X-ray flux of PG1407+265, has a mass of $(0.6- 5.5)\times10^{14} M_\odot$, and an X-ray gas temperature of ($2.2-4.3$) keV. Because the projected position of the quasar lies at about twice that of the cluster's inferred Einstein radius, lensing by the cluster is unlikely to explain the quasar's unusual properties. We also discuss the evidence for a second cluster centered on and at the redshift of the quasar.
description: 15 pages, 11 figures
Una conversazione infinita. Perché ritradurre i classici, a cura di Antonio Bibbò e Francesca Lorandini
Creators: name: Lussone, Teresa
Publisher: name: ri.tra | rivista di traduzione: teorie pratiche storie
Year: 2024

description: ri.tra | rivista di traduzione: teorie pratiche storie, No. 2 (2024): rivista di traduzione : teorie pratiche storie
Three approaches for analyzing the counterfactuality of counterfactual protocols
Creators: name: Wander, Alon
name: Cohen, Eliahu
name: Vaidman, Lev
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Counterfactual communication protocols are analysed using three approaches: a classical argument, the weak trace criterion, and the Fisher information criterion. It is argued that the classical analysis leads to contradiction and should therefore be abandoned. The weak trace and Fisher information criteria are shown to agree about the degree of counterfactuality of communication protocols involving postselection. It is argued that postselection is a necessary ingredient of counterfactual communication protocols. Coherent interaction experiments, as well as a recently introduced modification of counterfactual communication setups which eliminates the weak trace, are discussed.
description: 18 pages, 13 figures, accepted to Phys. Rev. A