cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Letter from Kathleen Raine to Sylvia Skelton, November 20, 1987
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
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: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Critics
valueUri: http://id.worldcat.org/fast/883769

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 to Sylvia Skelton, Raine discusses the financial side of the Temenos publication.
One-dimensional anyons with competing $δ$-function and derivative $δ$-function potentials
Creators: name: Batchelor, M. T.
name: Guan, X. -W.
name: Kundu, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose an exactly solvable model of one-dimensional anyons with competing $δ$-function and derivative $δ$-function interaction potentials. The Bethe ansatz equations are derived in terms of the $N$-particle sector for the quantum anyonic field model of the generalized derivative nonlinear Schrödinger equation. This more general anyon model exhibits richer physics than that of the recently studied one-dimensional model of $δ$-function interacting anyons. We show that the anyonic signature is inextricably related to the velocities of the colliding particles and the pairwise dynamical interaction between particles.
description: 9 pages, 2 figures, minor changes, references updated
Oral messages improve visual search
Creators: name: Kieffer, Suzanne
name: Carbonell, Noëlle
Publisher: name: arXiv
Year: 2007
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Input multimodality combining speech and hand gestures has motivated numerous usability studies. Contrastingly, issues relating to the design and ergonomic evaluation of multimodal output messages combining speech with visual modalities have not yet been addressed extensively. The experimental study presented here addresses one of these issues. Its aim is to assess the actual efficiency and usability of oral system messages including brief spatial information for helping users to locate objects on crowded displays rapidly. Target presentation mode, scene spatial structure and task difficulty were chosen as independent variables. Two conditions were defined: the visual target presentation mode (VP condition) and the multimodal target presentation mode (MP condition). Each participant carried out two blocks of visual search tasks (120 tasks per block, and one block per condition). Scene target presentation mode, scene structure and task difficulty were found to be significant factors. Multimodal target presentation proved to be more efficient than visual target presentation. In addition, participants expressed very positive judgments on multimodal target presentations which were preferred to visual presentations by a majority of participants. Besides, the contribution of spatial messages to visual search speed and accuracy was influenced by scene spatial structure and task difficulty: (i) messages improved search efficiency to a lesser extent for 2D array layouts than for some other symmetrical layouts, although the use of 2D arrays for displaying pictures is currently prevailing; (ii) message usefulness increased with task difficulty. Most of these results are statistically significant.
description: 4 pages
Transition state dynamics of a driven magnetic free layer
Creators: name: Mögerle, Johannes
name: Schuldt, Robin
name: Reiff, Johannes
name: Main, Jörg
name: Hernandez, Rigoberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Magnetization switching in ferromagnetic structures is an important process for technical applications such as data storage in spintronics, and therefore the determination of the corresponding switching rates becomes essential. We investigate a free-layer system in an oscillating external magnetic field resulting in an additional torque on the spin. The magnetization dynamics including inertial damping can be described by the phenomenological Gilbert equation. The magnetization switching between the two stable orientations on the sphere then requires the crossing of a potential region characterized by a moving rank-1 saddle. We adopt and apply recent extensions of transition state theory for driven systems to compute both the time-dependent and average switching rates of the activated spin system in the saddle region.
description: Main article has 11 pages, 5 figures
Reduction of Fermi velocity in folded graphene observed by resonance Raman spectroscopy
Creators: name: Ni, Zhenhua
name: Wang, Yingying
name: Yu, Ting
name: You, Yumeng
name: Shen, Zexiang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The 1+1 layer folded graphene sheets that deviate from AB stacking are successfully fabricated and their electronic structures are investigated by Raman spectroscopy. Significant blue shift of the 2D band of folded graphene compared to that of single layer graphene (SLG) is observed. This is attributed to SLG-like electronic structure of folded graphene but with slowing down of Fermi velocity (as much as ~5.6%). Different amount of blue shift of 2D band is observed for different folded graphenes, which may correspond to the different twist angle and/or separation between the two layers, resulting in different Fermi velocity of folded graphenes. Electronic structure of 1+1 folded graphene samples with different stacking order (twist and separation between the two layers, and in-plane shift of the two layers) can be investigated by Raman spectroscopy.
description: 18 pages, 4 figures, 2 tables, accepted by Phys. Rev. B
Arte e crise da pós-verdade na rede
Creators: name: Hernández-Acuaviva, Helena
name: Carvalho, Agda
Publisher: name: Labfront/UEMG
Year: 2023

description: A arte é uma peneira pela qual passam todos os tipos de problemas. As contínuas crises que caracterizam este século XXI assumiram as mais diversas formas, entre elas a proliferação de imagens que se difundem com rapidez através da Internet. Nestes tempos difíceis, nosso objetivo é explorar as possibilidades da arte como meio para comunicar mensagens complexas. A crise da Pós-verdade, causada pela prática da ausência de critério analítico e pela assimilação automática de pressupostos que não chegam a ser verificados mediante fontes confiáveis, tem sido desencadeada pela velocidade que imprime a comunicação online. Neste contexto, pretendemos contribuir para refletir com um olhar globalizado e de como os dispositivos digitais condicionam o imaginário contemporâneo que circula através das redes sociais. Para isso, apoiaremos este artigo no estudo de uma seleção de projetos artísticos que centram os seus discursos em torno do fenômeno das Fake News que inunda as redes.
CMB Constraint on Radion Evolution in the Brane World Scenario
Creators: name: Chan, K. C.
name: Chu, M. -C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In many versions of brane model, the modulus field of extra dimensions, the radion, could have cosmological evolution, which induces variation of the Higgs vacuum expectation value, $$, resulting in cosmological variation of the electron mass $m_e$. The formation of Cosmic Microwave Background (CMB) anisotropies is thus affected, causing changes both in the peaks positions and amplitudes in the CMB power spectra. Using the three-year Wilkinson Microwave Anisotropies Probe (WMAP) CMB data, with the Hubble parameter $H_0$ fixed to be the Hubble Space Telescope (HST) result 72 km s$^{-1}$ Mpc$^{-1}$, we obtain a constraint on $ρ$, the ratio of the value of $$ at CMB recombination to its present value, to be [0.97, 1.02].
description: 7 pages, 6 figures, minor changes of format to conform with PRD format
Experimental investigation to influence of pump phase fluctuation on phase-correlation of output optical fields from a non-degenerate parametric oscillator
Creators: name: Wang, Dong
name: Shang, Yana
name: Yan, Zhihui
name: Wang, Wenzhe
name: Jia, Xiaojun
name: Xie, Changde
name: Peng, Kunchi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The influence of the phase fluctuation of the pump laser on the phase-correlation between the signal and idler modes of the output fields from as non-degenerate optical parametric oscillator operating above oscillation threshold was experimentally investigated. The noise spectra of the intensity-difference and the phase-sum of the entangled optical beams were measured with a pair of unbalanced fiber Match-Zehnder interferometers specifically designed. The experimental results proved the previously theoretical prediction and are in reasonable agreement with the calculation based on semiclassical theory involving the phase fluctuation of pump laser.
description: 15 pages
Lande-like formula for the g factors of hole-nanowire subband edges
Creators: name: Csontos, D.
name: Zülicke, U.
name: Brusheim, P.
name: Xu, H. Q.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have analyzed theoretically the Zeeman splitting of hole-quantum-wire subband edges. As is typical for any bound state, their g factor depends on both an intrinsic g factor of the material and an additional contribution arising from a finite bound-state orbital angular momentum. We discuss the quantum-confinement-induced interplay between bulk-material and orbital effects, which is nontrivial due to the presence of strong spin-orbit coupling. A compact analytical formula is provided that elucidates this interplay and can be useful for predicting Zeeman splitting in generic hole-wire geometries.
description: 4 pages, 2 figures
Letter from Kathleen Raine to Robin Skelton, April 13, 1988
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: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878

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 invites Skelton to the second Temenos Conference and lists some of the guests who will be there.
Quantification of the helical morphology of chiral Au nanorods
Creators: name: Heyvaert, Wouter
name: Pedrazo-Tardajos, Adrián
name: Kadu, Ajinkya
name: Claes, Nathalie
name: González-Rubio, Guillermo
name: Liz-Marzán, Luis M.
name: Albrecht, Wiebke
name: Bals, Sara
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Chirality in inorganic nanoparticles and nanostructures has gained increasing scientific interest, because of the possibility to tune their ability to interact differently with left- and right-handed circularly polarized light. In some cases, the optical activity is hypothesized to originate from a chiral morphology of the nanomaterial. However, quantifying the degree of chirality in objects with sizes of tens of nanometers is far from straightforward. Electron tomography offers the possibility to faithfully retrieve the three-dimensional morphology of nanomaterials, but only a qualitative interpretation of the morphology of chiral nanoparticles has been possible so far. We introduce herein a methodology that enables us to quantify the helicity of complex chiral nanomaterials, based on the geometrical properties of a helix. We demonstrate that an analysis at the single particle level can provide significant insights into the origin of chiroptical properties.
Centrifugally driven electrostatic instability in extragalactic jets
Creators: name: Osmanov, Z.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The stability problem of the rotation induced electrostatic wave in extragalactic jets is presented. Solving a set of equations describing dynamics of a relativistic plasma flow of AGN jets, an expression of the instability rate has been derived and analyzed for typical values of AGNs. The growth rate was studied versus the wave length and the inclination angle and it has been found that the instability process is much efficient with respect to the accretion disk evolution, indicating high efficiency of the instability.
description: 7 pages, 4 figures
Letter from Kathleen Raine to Sylvia Skelton, April 13, 1988
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881

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 short letter, Raine writes about the Skelton family and selling paintings to cover Temenos costs.
The effect of stellar winds on the formation of a protocluster
Creators: name: Dale, J. E.
name: Bonnell, I. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present SPH simulations of protoclusters including the effects of winds from massive stars. Using a particle-injection method, we investigate the effect of structure close to the wind sources and the short-timescale influence of winds on protoclusters. Structures such as disks and gaseous filaments have a strong collimating effect. By a different technique of injecting momentum from point sources, we compare the large-scale, long-term effects of isotropic and intrinsically-collimated winds and find them to be similar. Both types of wind dramatically slow the global star formation process, but the timescale on which they expel significant mass from the cluster is rather long (approaching 10 freefall times). Clusters may then experience rapid star formation early in their lifetimes, before switching to a mode where gas is gradually expelled, while star formation proceeds much more slowly. This complicates conclusions regarding slow star formation derived from measuring the star-formation efficiency per freefall time. Estimates of the efficacy of winds in dispersing clusters derived simply from the total wind momentum flux may not be very reliable. This is due to material being expelled from deep within stellar potential wells, often to velocities well in excess of the cluster escape velocity, and also to the loss of momentum flux through holes in the gas distribution. Winds have little effect on the accretion--driven stellar IMF except at the very high-mass end, where they serve to prevent some of the most massive objects accreting. We also find that the morphology of the gas, the rapid motions of the wind sources and the action of accretion flows prevent the formation of bubble-like structures. This may make it difficult to discern the influence of winds on very young clusters.
description: 14 pages, 17 figures, accepted for publication in MNRAS, replaced with revised version as references missing in original
Letter from Kathleen Raine to Robin Skelton, June 23, [1988]
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Editors
valueUri: http://id.worldcat.org/fast/902475
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
subject: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: Critics
valueUri: http://id.worldcat.org/fast/883769
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Novelists
valueUri: http://id.worldcat.org/fast/1039684

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 thoroughly wishes Skelton well and describes the most recent issue of Temenos.
Magnetic order and its interplay with structure phase transition in van der Waals ferromagnet VI$_3$
Creators: name: Hao, Yiqing
name: Gu, Yiqing
name: Gu, Yimeng
name: Feng, Erxi
name: Cao, Huibo
name: Chi, Songxue
name: Wu, Hua
name: Zhao, Jun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Van der Waals magnet VI$_3$ demonstrates intriguing magnetic properties that render it great for use in various applications. However, its microscopic magnetic structure has not been determined yet. Here, we report neutron diffraction and susceptibility measurements in VI$_3$ that revealed a ferromagnetic order with the moment direction tilted from the $c$-axis by ~36° at 4 K. A spin reorientation accompanied by a structure distortion within the honeycomb plane is observed at a temperature of ~27 K, before the magnetic order completely disappears at $T_C$ = 50 K. The refined magnetic moment of ~1.3 $μ_B$ at 4 K is considerably lower than the fully ordered spin moment of 2 $μ_B$/ V$^{3+}$, suggesting the presence of a considerable orbital moment antiparallel to the spin moment and strong spin-orbit coupling in VI$_3$. This results in strong magnetoelastic interactions that make the magnetic properties of VI$_3$ easily tunable via strain and pressure.
description: 8 pages, 4 figures
Letter from Kathleen Raine to Robin and Sylvia Skelton, February 11, 1989
Creators: name: Raine, Kathleen, 1908-2003
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Philosophy
valueUri: http://id.worldcat.org/fast/1060777
subject: FOS: Philosophy, ethics and religion
subject: Neoplatonism
valueUri: http://id.worldcat.org/fast/1035884
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Scholars
valueUri: http://id.worldcat.org/fast/1106878
subject: Raine, Kathleen, 1908-2003
valueUri: http://id.worldcat.org/fast/52672
subject: Periodical editors
valueUri: http://id.worldcat.org/fast/1058064
subject: Skelton, Robin
valueUri: http://id.worldcat.org/fast/51853
subject: Periodicals--Publishing
valueUri: http://id.worldcat.org/fast/1058100
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: Platonists
valueUri: http://id.worldcat.org/fast/1066881
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: English poetry--Manuscripts
valueUri: http://id.worldcat.org/fast/912320
subject: Wiccans
valueUri: http://id.worldcat.org/fast/1765210
subject: Book industries and trade
valueUri: http://id.worldcat.org/fast/836171
subject: Novelists, English
valueUri: http://id.worldcat.org/fast/1039718
subject: Critics
valueUri: http://id.worldcat.org/fast/883769

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 writes about a Yeats half-centenary conference she will be attending, her struggle to find money for printing the Temenos Journal, and culture and thought in England.
Micro- and Macrorheological Properties of Isotropically Cross-linked Actin Networks
Creators: name: Luan, Yuxia
name: Lieleg, Oliver
name: Wagner, Bernd
name: Bausch, Andreas R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Cells make use of semi-flexible biopolymers such as actin or intermediate filaments to control their local viscoelastic response by dynamically adjusting the concentration and type of cross-linker molecules. The microstructure of the resulting networks mainly determines their mechanical properties. It remains an important challenge to relate structural transitions to both the molecular properties of the cross-linking molecules and the mechanical response of the network. This can be achieved best by well-defined in vitro model systems in combination with microscopic techniques. Here, we show that with increasing concentrations of the cross-linker HMM (heavy meromyosin) a transition in the mechanical network response occurs. At low cross-linker densities the network elasticity is dominated by the entanglement length of the polymer, while at high HMM densities the cross-linker distance determines the elastic behavior. Using microrheology the formation of heterogeneous networks is observed at low cross-linker concentrations. Micro- and macrorheology both report the same transition to a homogeneous cross-linked phase. This transition is set by a constant average cross-linker distance. Thus, the micro- and macromechanical properties of isotropically cross-linked in vitro actin networks are determined by only one intrinsic network parameter.
description: 14 pages, 5 figures
The innermost region of AGN tori: implications from the HST/NICMOS Type 1 point sources and near-IR reverberation
Creators: name: Kishimoto, Makoto
name: Hoenig, Sebastian F.
name: Beckert, Thomas
name: Weigelt, Gerd
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Spatially resolving the innermost torus in AGN is one of the main goals of its high-spatial-resolution studies. This could be done in the near-IR observations of Type 1 AGNs where we see directly the hottest dust grains in the torus. We discuss two critical issues in such studies. Firstly, we examine the nuclear point sources in the HST/NICMOS images of nearby Type 1 AGNs, to evaluate the possible contribution from the central putative accretion disk. After a careful subtraction of host bulge flux, we show that near-IR colors of the point sources appear quite interpretable simply as a composite of a black-body-like spectrum and a relatively blue distinct component as expected for a torus and an accretion disk, respectively. Our radiative transfer models for clumpy tori also support this simple two-component interpretation. The observed near-IR colors suggest a fractional accretion disk contribution of ~25% or less at 2.2 micron. Secondly, we show that the innermost torus radii as indicated by the recent near-IR reverberation measurements are systematically smaller by a factor of ~3 than the predicted dust sublimation radius with a reasonable assumption for graphite grains of sublimation temperature 1500 K and size 0.05 micron in radius. The discrepancy might indicate a much higher sublimation temperature or a typical grain size being much larger in the innermost tori, though the former case appears to be disfavored by the observed colors of the HST point sources studied above. The near-IR interferometry with a baseline of ~100 m should be able to provide the important, independent size measurements, based on the low accretion disk contribution obtained above.
description: accepted for publication in A&A
An analysis of the spectroscopic signatures of layering in the ejecta of type Iax supernovae
Creators: name: Magee, M. R.
name: Gillanders, J. H.
name: Maguire, K.
name: Sim, S. A.
name: Callan, F. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Investigations of some type Iax supernovae have led to the suggestion that their ejecta must be layered to some degree. Such an ejecta structure has been argued as inconsistent with the well-mixed composition predicted by pure deflagrations. Based on explosion models, we create toy models in which the ejecta are artificially stratified and progressively mixed until a uniform composition is obtained. We find that models that are heavily mixed, containing burned and unburned material at all velocities, produce reasonably good agreement with SN 2012Z, for which a layered structure has been suggested. We also discuss how existing ejecta compositions determined for type Iax supernovae do not necessarily contradict pure deflagration models and may be consistent with a steeper density profile. We investigate previous claims that differences in line profile shapes may be due to strong blending, by presenting a series of models with different plasma states. These models indicate that blending could indeed explain differences in the observed profiles. Alternatively, stratification could also explain such differences, however all of our models indicate that this does not necessarily require stratification in abundance. Sufficient stratification in ionisation state can be achieved even for a well-mixed model. Based on our analysis, we demonstrate that there is insufficient evidence to suggest the ejecta of type Iax supernovae must be layered and therefore argue the pure deflagration scenario is not ruled out, even for the brightest type Iax supernovae. Our analysis does not indicate the ejecta cannot be layered to some degree, but observations within days of explosion are necessary to determine the extent to which the outer ejecta could be layered.
description: 19 pages, 12 figures, 8 tables. Accepted for publication in MNRAS
How state preparation can affect a quantum experiment: Quantum process tomography for open systems
Creators: name: Kuah, Aik-meng
name: Modi, Kavan
name: Rodríguez-Rosario, César A.
name: Sudarshan, E. C. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the effects of preparation of input states in a quantum tomography experiment. We show that maps arising from a quantum process tomography experiment (called process maps) differ from the well know dynamical maps. The difference between the two is due to the preparation procedure that is necessary for any quantum experiment. We study two preparation procedures, stochastic preparation and preparation by measurements. The stochastic preparation procedure yields process maps that are linear, while the preparations using von Neumann measurements lead to non-linear processes, and can only be consistently described by a bi-linear process map. A new process tomography recipe is derived for preparation by measurement for qubits. The difference between the two methods is analyzed in terms of a quantum process tomography experiment. A verification protocol is proposed to differentiate between linear processes and bi-linear processes. We also emphasize the preparation procedure will have a non-trivial effect for any quantum experiment in which the system of interest interacts with its environment.
description: 13 pages, no figures, submitted to Phys. Rev. A
Atualizações pendentes: notas sobre artes, educação e cultura digital
Creators: name: Bracchi, Daniela Nery
name: Silva, Carlos Eduardo Galon
Publisher: name: Labfront/UEMG
Year: 2023

description: Através de notas teóricas e referências bibliográficas, neste estudo indicamos reflexões sobre a educação, as artes e a cultura digital. Desde o início da Revolução Digital a sociedade foi desafiada com novas práticas, comportamentos e interações sociais que utilizam recursos tecnológicos. Após a pandemia de COVID-19, históricas fragilidades escolares ficaram evidentes, pois além dos retrocessos na aprendizagem, houve também o aumento de desinformação, de desigualdades e do abandono estudantil. Neste trabalho, apontamos a potência reparadora da disciplina de Artes combinada com a cultura digital para o enfrentamento deste panorama, uma vez que nesta relação é possível combinar e recombinar imagens, vídeos e símbolos com a tecnologia, de modo estimulante para educadores e educandos, superando a visão modernista ligada a noções de talento e trabalho manual, tornando assim o aprendizado significativo para os envolvidos. As práticas pedagógicas artísticas e digitais alinhadas com os interesses decoloniais, podem transformar a realidade da comunidade escolar. Para tanto é preciso atualizações e investimentos na educação que são do âmbito da estrutura, do pensamento e da formação.
On the detection of multiple shock fronts in A1914 using deep Chandra X-ray observations
Creators: name: Rahaman, Majidul
name: Raja, Ramij
name: Datta, Abhirup
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Here, we report the new detection of three shock fronts using archival \textit{Chandra} X-ray observations in Abell 1914, which also hosts a radio halo, a radio phoenix, and a head-tail galaxy. In this study, we report the X-ray shock front at the position of the radio phoenix, which further strengthens the scenario that radio phoenix traces old plasma that gets lit up when compressed by shock passage. We further analyze the thermodynamic structure of the cluster in detail. We create temperature maps of A1914 using three different techniques, Adaptive Circular Binning (ACB), Weighted Voronoi Tessellations (WVT), and Contour binning (Contbin) method. These thermodynamic maps, along with the pseudo pressure and the pseudo entropy maps for the cluster, are evidence of disturbed morphology produced by multiple merger events. These merger events create cluster-wide turbulence, which may re-accelerate the relativistic particles and result in a radio halo within the cluster. Further, comparing X-ray and radio images reveals that the radio halo is contained within two X-ray shock fronts. Our analysis suggests that A1914 has both equatorial shock and axial shock within the cluster's ICM. We proposed a dual merging scenario based on the shock position and analysis of the thermodynamic maps obtained from the deeper \textit{Chandra} X-ray observations.
description: 15 pages, 12 figures
Instanton Counting and Matrix Model
Creators: name: Tai, Ta-Sheng
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct an Imbimbo-Mukhi type matrix model, which reproduces exactly the partition function of ${\mathbb{CP}^1}$ topological strings in the small phase space, Nekrasov's instanton counting in ${\cal{N}}=2$ gauge theory and the large $N$ limit of the partition function in 2-dimensional Yang-Mills theory on a sphere. In addition, we propose a dual Stieltjes-Wigert type matrix model, which emerges when all-genus topological string amplitudes on certain simple toric Calabi-Yau manifolds are compared with the Imbimbo-Mukhi type model.
description: 14 pages; v2: references added and typos fixed
Numerical evaluation of spin foam amplitudes beyond simplices
Creators: name: Allen, Courtney
name: Girelli, Florian
name: Steinhaus, Sebastian
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the first numerical calculation of the 4D Euclidean spin foam vertex amplitude for vertices with hypercubic combinatorics. Concretely, we compute the amplitude for coherent boundary data peaked on cuboid and frustum shapes. We present the numerical algorithms to explicitly compute the vertex amplitude and compare the results in different cases to the semi-classical approximation of the amplitude. Overall we find good qualitative agreement of the amplitudes and evidence of convergence of the asymptotic formula to the full amplitude already at fairly small spins, yet also differences in the frequency of oscillations and a phase shift absent in the 4-simplex case. However, due to rapidly growing numerical costs, we cannot reach sufficiently high spins to prove agreement of both amplitudes. Lastly, this setup allows us to explore non-uniform vertex amplitudes, where some representations are small while others are large; we find indications that scenarios might exist in which the semi-classical amplitude is a valid approximation even if some spins remain small. This suggests that the transition of the quantum to the semi-classical regime (for a single vertex amplitude) is intricate.
description: 23 pages, 17 figures, v2: added references to code and dataset
Photonic-crystal slabs with a triangular lattice of triangular holes investigated using a guided-mode expansion method
Creators: name: Andreani, L. C.
name: Gerace, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: According to a recent proposal [S. Takayama et al., Appl. Phys. Lett. 87, 061107 (2005)], the triangular lattice of triangular air holes may allow to achieve a complete photonic band gap in two-dimensional photonic crystal slabs. In this work we present a systematic theoretical study of this photonic lattice in a high-index membrane, and a comparison with the conventional triangular lattice of circular holes, by means of the guided-mode expansion method whose detailed formulation is described here. Photonic mode dispersion below and above the light line, gap maps, and intrinsic diffraction losses of quasi-guided modes are calculated for the periodic lattice as well as for line- and point-defects defined therein. The main results are summarized as follows: (i) the triangular lattice of triangular holes does indeed have a complete photonic band gap for the fundamental guided mode, but the useful region is generally limited by the presence of second-order waveguide modes; (ii) the lattice may support the usual photonic band gap for even modes (quasi-TE polarization) and several band gaps for odd modes (quasi-TM polarization), which could be tuned in order to achieve doubly-resonant frequency conversion between an even mode at the fundamental frequency and an odd mode at the second-harmonic frequency; (iii) diffraction losses of quasi-guided modes in the triangular lattices with circular and triangular holes, and in line-defect waveguides or point-defect cavities based on these geometries, are comparable. The results point to the interest of the triangular lattice of triangular holes for nonlinear optics, and show the usefulness of the guided-mode expansion method for calculating photonic band dispersion and diffraction losses, especially for higher-lying photonic modes.
description: 16 pages, 11 figures
Multi-Transformer: A New Neural Network-Based Architecture for Forecasting S&P Volatility
Creators: name: Ramos-Pérez, Eduardo
name: Alonso-González, Pablo J.
name: Núñez-Velázquez, José Javier
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Finance (q-fin.CP)
subject: Machine Learning (cs.LG)
subject: Computation (stat.CO)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: Events such as the Financial Crisis of 2007-2008 or the COVID-19 pandemic caused significant losses to banks and insurance entities. They also demonstrated the importance of using accurate equity risk models and having a risk management function able to implement effective hedging strategies. Stock volatility forecasts play a key role in the estimation of equity risk and, thus, in the management actions carried out by financial institutions. Therefore, this paper has the aim of proposing more accurate stock volatility models based on novel machine and deep learning techniques. This paper introduces a neural network-based architecture, called Multi-Transformer. Multi-Transformer is a variant of Transformer models, which have already been successfully applied in the field of natural language processing. Indeed, this paper also adapts traditional Transformer layers in order to be used in volatility forecasting models. The empirical results obtained in this paper suggest that the hybrid models based on Multi-Transformer and Transformer layers are more accurate and, hence, they lead to more appropriate risk measures than other autoregressive algorithms or hybrid models based on feed forward layers or long short term memory cells.
The Electroweak Phase Transition in Nearly Conformal Technicolor
Creators: name: Cline, James M.
name: Jarvinen, Matti
name: Sannino, Francesco
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine the temperature-dependent electroweak phase transition in extensions of the Standard Model in which the electroweak symmetry is spontaneously broken via strongly coupled, nearly-conformal dynamics. In particular, we focus on the low energy effective theory used to describe Minimal Walking Technicolor at the phase transition. Using the one-loop effective potential with ring improvement, we identify significant regions of parameter space which yield a sufficiently strong first order transition for electroweak baryogenesis. The composite particle spectrum corresponding to these regions can be produced and studied at the Large Hadron Collider experiment. We note the possible emergence of a second phase transition at lower temperatures. This occurs when the underlying technicolor theory possesses a nontrivial center symmetry.
description: RevTeX, 35 pages, 3 figures
Two sides of the same coin: sterile neutrinos and dark radiation. Status and perspectives
Creators: name: Archidiacono, Maria
name: Gariazzo, Stefano
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The presence of light sterile neutrinos is one of the unanswered questions of particle physics. The cosmological counterpart is represented by dark radiation, i.e.\ any form of radiation present in the early Universe besides photons and standard (active) neutrinos. This short review provides a comprehensive overview of the two problems and of their connection. We review the status of neutrino oscillation anomalies, commenting on the most recent oscillation data and their mutual tensions, and we discuss the constraints from other terrestrial probes. We show the shortcomings of translating light sterile neutrinos in cosmology as additional thermalised relativistic species, produced by neutrino oscillations, and we detail alternative solutions, specifically focusing on neutrino non standard interactions, and on their link to the Hubble constant problem. The impact of a new force leading to dark radiation -- dark matter interactions is also discussed in the realm of new physics in the dark sector.
description: 18 pages, 6 figures. Short invited review to appear in Universe, special issue "Dark Matter and Dark Energy: Particle Physics, Cosmology, and Experimental Searches"