cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Text: Autobiography
Creators: name: Criollo Chapal, Gabriel Rodrigo
name: Dabkowski, Maksymilian
name: Quenamá, Leidy
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: con

description: His infancy, adolescence, and adulthood. His work at the NOA'IKE foundation, in the town council, in eagle protection, in environmental protection. The community of Zábalo, and how there are a lot of animals there. Where the Cofán came from.
Learning Daily Calorie Intake Standard using a Mobile Game
Creators: name: Das, Anik
name: Amin, Sumaiya
name: Kabir, Muhammad Ashad
name: Hossain, Md. Sabir
name: Islam, Mohammad Mainul
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Mobile games can contribute to learning at greater success. In this paper, we have developed and evaluated a novel educational game, named FoodCalorie, to learn the food calorie intake standards. Our game is aimed to learn the calorie values of various traditional Bangladeshi foods and the calorie intake standard that varies with age and gender. Our study confirms the finding of existing studies that game-based learning can enhance the learning experience.
Finite-size scaling of directed percolation above the upper critical dimension
Creators: name: Lubeck, S.
name: Janssen, H. -K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider analytically as well as numerically the finite-size scaling behavior in the stationary state near the non-equilibrium phase transition of directed percolation within the mean field regime, i.e., above the upper critical dimension. Analogous to equilibrium, usual finite-size scaling is valid below the upper critical dimension, whereas it fails above. Performing a momentum analysis of associated path integrals we derive modified finite-size scaling forms of the order parameter and its higher moments. The results are confirmed by numerical simulations of corresponding high-dimensional lattice models.
description: 4 pages, one figure
Quantum spatial correlations in high-gain parametric down-conversion measured by means of a CCD camera
Creators: name: Jedrkiewicz, O.
name: Brambilla, E.
name: Bache, M.
name: Gatti, A.
name: Lugiato, L. A.
name: Di Trapani, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider travelling-wave parametric down-conversion in the high-gain regime and present the experimental demonstration of the quantum character of the spatial fluctuations in the system. In addition to showing the presence of sub-shot noise fluctuations in the intensity difference, we demonstrate that the peak value of the normalized spatial correlations between signal and idler lies well above the line marking the boundary between the classical and the quantum domain. This effect is equivalent to the apparent violation of the Cauchy-Schwartz inequality, predicted by some of us years ago, which represents a spatial analogue of photon antibunching in time. Finally, we analyse numerically the transition from the quantum to the classical regime when the gain is increased and we emphasize the role of the inaccuracy in the determination of the symmetry center of the signal/idler pattern in the far-field plane.
description: 21 pages, 11 figures, submitted to J. Mod. Opt. special issue on Quantum Imaging
Quanto costa incidere una stele? Costi di produzione e meccanismi di pubblicazione delle iscrizioni pubbliche in Grecia
Creators: name: Berti, Irene
Publisher: name: Università degli Studi di Torino - Dipartimento di Studi Storici
Year: 2014
Subjects: Delos; Cos; Atene; marmo; rilievo; appalto; Athens; marble; relief; contract

description: Il contributo affronta la questione del finanziamento e del costo dei decreti pubblici e si propone di ricostruire, sulla base dell’ analisi dei casi esemplari di Atene, Delo e Cos, i fattori economici che determinavano la formazione del prezzo di una stele pubblica. A questo scopo si analizzano i processi di pubblicazione e produzione, dallo stanziamento dei fondi e dal bando dei contratti, al reperimento di materiale e mano d’opera, all’organizzazione della bottega, fino al trasporto e alla collocazione del prodotto finito.

This paper analyzes the production of a marble stele and its costs from the public decision to publish an inscription to the erection of the final product. On the basis of the case studies of Athens, Cos and Delos, the paper discusses the supply of materials, the work of the mason, the labor cost and the letting out of the contracts for the production.
description: HISTORIKA Studi di storia greca e romana, Vol 3 (2013)
New Analytical Formula for Supercritical Accretion Flows
Creators: name: Watarai, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine a new family of global analytic solutions for optically thick accretion disks, which includes the supercritical accretion regime. We found that the ratio of the advection cooling rate, $Q_{\rm adv}$, to the viscous heating rate, $Q_{\rm vis}$, i.e., $f=Q_{\rm adv}/Q_{\rm vis}$, can be represented by an analytical form dependent on the radius and the mass accretion rate. The new analytic solutions can be characterized by the photon-trapping radius, $\rtrap$, inside which the accretion time is less than the photon diffusion time in the vertical direction; the nature of the solutions changes significantly as this radius is crossed. Inside the trapping radius, $f$ approaches $f \propto r^0$, which corresponds to the advection-dominated limit ($f \sim 1$), whereas outside the trapping radius, the radial dependence of $f$ changes to $f \propto r^{-2}$, which corresponds to the radiative-cooling-dominated limit. The analytical formula for $f$ derived here smoothly connects these two regimes. The set of new analytic solutions reproduces well the global disk structure obtained by numerical integration over a wide range of mass accretion rates, including the supercritical accretion regime. In particular, the effective temperature profiles for our new solutions are in good agreement with those obtained from numerical solutions. Therefore, the new solutions will provide a useful tool not only for evaluating the observational properties of accretion flows, but also for investigating the mass evolution of black holes in the presence of supercritical accretion flows.
description: 14 pages, 7 figures, accepted for publication in the Astrophysical Journal
Geospatial Visualisation Techniques for Transmission System Needs Identification
Creators: name: Daly, Pádraig
Publisher: name: figshare
Year: 2021
Subjects: subject: 90607 Power and Energy Systems Engineering (excl. Renewable Power)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: CIGRE Session 2020 conference paper
Photoassociative Spectroscopy of $^{87}$Sr
Creators: name: Hill, J. C.
name: Huie, W.
name: Lunia, P.
name: Whalen, J. D.
name: Kanungo, S. K.
name: Lu, Y.
name: Killian, T. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate photoassociation (PA) of ultracold fermionic $^{87}$Sr atoms. The binding energies of a series of molecular states on the $^1Σ^+_u$ $5s^2\,^1$S$_0+5s5p\,^1$P$_1$ molecular potential are fit with the semiclassical LeRoy-Bernstein model, and PA resonance strengths are compared to predictions based on the known $^1$S$_0+^1$S$_0$ ground state potential. Similar measurements and analysis were performed for the bosonic isotopes $^{84}$Sr and $^{86}$Sr, allowing a combined analysis of the long-range portion of the excited-state potential and determination of the $5s5p\,^1$P$_1$ atomic state lifetime of $5.20 \pm 0.02$ ns. The results enable prediction of PA rates across a wide range of experimental conditions.
description: 5 pages, 4 figures
Comment on "Localized behavior near the Zn impurity in YBa2Cu4O8 as measured by nuclear quadrupole resonance"
Creators: name: Julien, M. -H.
name: Tokunaga, Y.
name: Feher, T.
name: Horvatic, M.
name: Berthier, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Williams and Kramer [Phys. Rev. B {\bf 64}, 104506 (2001)] have recently argued against the existence of staggered magnetic moments residing on several lattice sites around Zn impurities in YBCO superconductors. This claim, which is in line with an earlier publication by Williams, Tallon and Dupree [Phys. Rev. B {\bf 61}, 4319 (2000)], is however in contradiction with a large body of experimental data from different NMR groups. On the contrary, the authors argue in favor of a very localized spin and charge density on Cu sites first neighbors to Zn. We show that the conclusions of Williams and Kramer arise from erroneous interpretations of NMR and NQR data.
description: 4 pages
Scale-free networks may not necessarily witness cooperation
Creators: name: Nath, Deep
name: Sinha, Saptarshi
name: Roy, Soumen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Networks with a scale-free degree distribution are widely thought to promote cooperation in various games. Herein, by studying the well-known prisoner's dilemma game, we demonstrate that this need not necessarily be true. For the very same degree sequence and degree distribution, we present a variety of possible behaviour. We reassess the perceived importance of hubs in a network towards the maintenance of cooperation. We also reevaluate the dependence of cooperation on network clustering and assortativity.
description: Accepted to Europhysics Letters (EPL)
Sparta tra il 279 ed il 273 a.C.
Creators: name: Scarpato, Andrea
Publisher: name: Università degli Studi di Torino - Dipartimento di Studi Storici
Year: 2014
Subjects: Sparta; Peloponneso; Argolide; Peloponnese; Argolis; anti-Macedonian policy

description: La storia spartana della prima età ellenistica costituisce un tema poco trattato dagli studiosi: le poche trattazioni a riguardo hanno mostrato piu’ volte, ed ingiustamente, il ruolo passivo di Sparta nelle vicende politiche internazionali del terzo secolo a.C. Tuttavia, nel periodo compreso tra 279 e 273 Sparta sembra politicamente partecipe delle vicende ellenistiche; la polis lacedemone segue una politica strategica anti-macedone astuta e mirata a consolidare la sua posizione nel Peloponneso. Sparta, nonostante la sua debolezza, occupa una posizione strategica nell’Argolide ed instaura rapporti con altre poleis localizzate al di fuori del Peloponneso.

The early Hellenistic history of Sparta constitutes a topic that has been overlooked by the scholarship: previous studies have often shown the passive role of Sparta on the international scene of the third century BC. However, throughout the period 279-273 the polis follows a strategic anti-Macedonian policy that aims to consolidate the Lacedaemonian presence in the Peloponnese. Despite its internal issues, Sparta occupies a strategic position in the Argolis and is able to establish contacts with poleis located outside the Peloponnese.
description: HISTORIKA Studi di storia greca e romana, Vol 3 (2013)
Les gouverneurs au temps de Libanios et Julien. Réalité et représentation
Creators: name: Cabouret, Bernadette
Publisher: name: Università degli Studi di Torino - Dipartimento di Studi Storici
Year: 2014
Subjects: Roman Empire; East; Libanios; Julian; provincial governors

description: À côté des écrits de Julian, les lettres et les oraisons de Libanios documentent le rôle des gouverneurs provinciaux dans l'Orient romain dans la seconde moitié du 4ème siècle après J.-C., leurs pouvoirs administratifs et judiciaires et leurs relations avec les gens remarquables des villes. Tout en continuant à exercer un rôle important, leur multiplication et la grandissante hiérarchisation administrative déterminent cependant une réduction de leur pouvoir.

Along with Julian’s writings, letters and orations by Libanius are documents of the role of provincial governors in the Roman East during the 2nd half of the 4th century, their administrative and judicial powers and their relationship with notable people. Although they continue to exert an important role, their multiplication and the increasing hierarchization of the administation determine however a gradual reduction of their power.
description: HISTORIKA Studi di storia greca e romana, Vol 3 (2013)
A hierarchy of behavioral equivalences in the $π$-calculus with noisy channels
Creators: name: Cao, Yongzhi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: The $π$-calculus is a process algebra where agents interact by sending communication links to each other via noiseless communication channels. Taking into account the reality of noisy channels, an extension of the $π$-calculus, called the $π_N$-calculus, has been introduced recently. In this paper, we present an early transitional semantics of the $π_N$-calculus, which is not a directly translated version of the late semantics of $π_N$, and then extend six kinds of behavioral equivalences consisting of reduction bisimilarity, barbed bisimilarity, barbed equivalence, barbed congruence, bisimilarity, and full bisimilarity into the $π_N$-calculus. Such behavioral equivalences are cast in a hierarchy, which is helpful to verify behavioral equivalence of two agents. In particular, we show that due to the noisy nature of channels, the coincidence of bisimilarity and barbed equivalence, as well as the coincidence of full bisimilarity and barbed congruence, in the $π$-calculus does not hold in $π_N$.
description: 30 pages, 2 figures
Tra Antiochia e Roma: il network comune di Libanio e Simmaco
Creators: name: Pellizzari, Andrea
Publisher: name: Università degli Studi di Torino - Dipartimento di Studi Storici
Year: 2014
Subjects: Rome; Antioch; Symmachus; Libanius; Letters

description: Nella seconda metà del IV secolo d.C. le relazioni tra Roma e Antiochia avevano come terminale privilegiato nelle due città le figure di Simmaco e Libanio, i quali le controllavano e le tenevano insieme proprio grazie allo strumento epistolare. L’esistenza di tale network deve essere tuttavia intesa estensivamente, perché sono poche le corrispondenze direttamente attestate dai rispettivi epistolari, mentre la maggior parte di esse può essere dedotta dalla condivisione di una sensibilità culturale e di un orizzonte comune di interessi da parte dei vari protagonisti attivi fra le due città.

In the 2nd half of the 4th century the relationship between Rome and Antioch had two privileged terminals, the figures of Symmachus and Libanius, who controlled and held them together thanks to the letters. Such a network should be broadly understood, because there are few correspondences directly attested, while most of them can be deduced from sharing a common cultural sensibility and a common horizon of interests by the various protagonists involved between the two cities.
description: HISTORIKA Studi di storia greca e romana, Vol 3 (2013)
Low-lying electron energy levels in three-particle electron-muon ions $(μe Li)$, $(μe Be)$, $(μe B)$
Creators: name: Dorokhov, A. E.
name: Korobov, V. I.
name: Martynenko, A. P.
name: Martynenko, F. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The electron Lamb shift $(2P-2S)$ and the energy interval $(2S-1S)$ in muon-electron ions of lithium, beryllium, and boron have been calculated within the framework of the perturbation theory method for the fine structure constant and the electron-muon mass ratio. The corrections of the first and second orders of the perturbation theory, which include the effects of vacuum polarization, nuclear structure and recoil, are taken into account. The obtained analytical results in perturbation theory are compared with the results of calculations within the variational approach. The obtained values for the Lamb shift $(2P-2S)$ and the interval $(2S-1S)$ can be used for comparison with future experimental data and verification of quantum electrodynamics.
description: 17 pages
Intessere relazioni. Osservazioni sull’itinerario di philia (I. dalle origini al V sec. a.C.)
Creators: name: Intrieri, Maria
Publisher: name: Università degli Studi di Torino - Dipartimento di Studi Storici
Year: 2014
Subjects: concordia; philos; philia; amicizia; Omero; Erodoto; Tucidide; concord; friendship; Homer; Herodotus; Thucydides

description: Nell’articolato quadro del lessico della concordia, la famiglia di termini che fa capo a philos / philia occupa un posto peculiare per l’ampia sfumatura di significati cui sembra sin dalle origini far riferimento; la stessa traduzione ‘amico’-‘amicizia’ si rivela non del tutto soddisfacente di fronte alla variegata molteplicità delle forme di relazione implicate dai termini greci. In questo lavoro si cercherà di rendere ragione della complessità di tali sfumature, analizzandone le radici e le più significative testimonianze di età arcaica e classica (in particolare Omero, Erodoto e Tucidide).

In the complex frame of concord’s lexicon, the family of terms which is headed by philos / philia occupies a prominent place thanks to the wide range of meanings that it has from the beginning; the translation ‘friend’ - ‘friendship’ turns out to be not entirely satisfactory, in front of the multiplicity of forms of relationship involved in the Greek terms. In this paper we will try to account for the complexity of these shades, analysing the roots and the most important occurrences of archaic and classical period (in particular Homer, Herodotus and Thucydides).
description: HISTORIKA Studi di storia greca e romana, Vol 3 (2013)
Scalar kappa meson in K* photoproduction
Creators: name: Oh, Yongseok
name: Kim, Hungchong
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We propose that the scalar $κ(800)$ meson may play an important role in $K^*$ photoproduction. In the reactions of $γp \to K^{*+} Λ$ and $γp \to K^{*0} Σ^+$, we consider the production mechanisms including $t$-channel $K^*$, $K$, $κ$ exchanges, s-channel $N$, $Δ$ diagrams, and $u$-channel $Λ$, $Σ$, $Σ^*$ diagrams within the tree level approximation, and find that the $κ$-meson exchange may contribute significantly to $K^*Σ$ photoproduction, while it is rather supplementary in $K^*Λ$ photoproduction. We demonstrate how the observables of $K^*$ photoproduction can be used to constrain the $κ$ meson properties. In particular, the parity asymmetry can separate the $κ$ meson contribution in $K^*$ photoproduction.
description: 9 pages, 4 figures, REVTeX
Scientific and Financial Performance Measure : A Simultaneous Model to Evaluate Scientific Activities
Creators: name: Handoko, L. T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: An alternative model to measure simultaneously scientific and financial performances of scientific activities is proposed. This mathematical model focuses only on the final scientific outcomes in each fiscal year to gurantee the objectivity. The model is suited for the purpose of immediate and quantitative evaluation needed by policy makers to make decision in the subsequent fiscal year. The model can be applied to any branches of science, while it is also adjustable to varying macro-economic indicators. This enables the policy makers to evaluate equally scientific activities in various fields of science. It is argued that implementing the model could realize a fair, transparent and objective reward and punishment system in any scientific activities in order to improve both individual and institutional performances. The model also enables an automatic evaluation embedded in any scientific databases either in the local system or over the net.
description: 10 pages, 2 figures
Fratello, fratellanza e ‘affratellamento’
Creators: name: Teppa, Serena
Publisher: name: Università degli Studi di Torino - Dipartimento di Studi Storici
Year: 2014
Subjects: fratellanza; adelphos; fratrie; consanguineità; brotherhood; relationship

description: Nella lingua greca il concetto di ‘fratellanza di sangue’ è espresso dal termine ajdelfov". A differenza delle altre lingue della famiglia indeuropea, infatti, il termine greco fr£thr indica una fratellanza artificiale, che unisce persone con legami non necessariamente parentali in associazioni con finalità politiche e culturali (è il caso delle fratrie). È raro che nel mondo greco tale ‘fratellanza elettiva’ sia indicata usando il termine ajdelfov", e, in questi casi, il vocabolo non presenta una valore propriamente istituzionale, ma rimarca un sentimento che scaturisce da un desiderio di consanguineità e da una sfera emozionale: così nella Repubblica di Platone, nel decreto di Nakone, nell’epigrafe di Afrodisia, nella letteratura giudaica e in quella cristiana, in cui si applica alla fratellanza in Cristo, come rapporto privilegiato con il ‘prossimo’.

The concept of 'blood brotherhood' is defined by the Greek word ajdelfov". Unlike the other languages of the Indo-European family, in fact, the Greek word fr£thr indicates an artificial brotherhood, which unites in political and cultural association people who do not necessarily have family connections (this is the case of the fratriai). In Greek the word ajdelfov" is rarely used to refer to 'elective brotherhood’, and, in these cases, it does not have a proper institutional value, but emphasizes a feeling that comes from the desire of blood relationship and regards the emotional sphere, as demonstrated in Plato’s Republic, in the decree of Nakone, in the epigraph of Aphrodisias, in Jewish literature and in Christian one, that applies it to the brotherhood in Christ, as privileged relationship with the 'neighbor'.
description: HISTORIKA Studi di storia greca e romana, Vol 3 (2013)
A Supersymmetric Explanation of the Excess of Higgs-Like Events at LEP
Creators: name: Drees, Manuel
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Searches for the Standard Model Higgs boson by the four LEP experiments found excess events in two mass ranges: a 2.3 sigma excess around 98 GeV, and an 1.7 sigma excess around 115 GeV. The latter has been discussed widely in the literature, but the former has attracted little attention so far. In this paper I explore the possibility of explaining the excess near 98 GeV through production of the lighter CP--even Higgs boson in the Minimal Supersymmetric Standard Model (MSSM). It is shown that this allows to simultaneously explain the excess near 115 GeV through the production of the heavier CP--even MSSM Higgs boson. The resulting light Higgs sector offers opportunities for charged Higgs boson searches at the Tevatron and LHC. Neutral Higgs boson searches at the LHC in the di--muon channel are also promising. However, conclusive tests of this scenario may have to wait for the construction of a linear e+ e- collider.
description: LaTeX, 14 pages, 7 .eps-files (included). Added references and a couple of footnotes; results unchanged. Version to appear in PRD
Long range statistical fluctuations of the crossed Josephson current
Creators: name: Mélin, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate the crossed Josephson effect in a geometry consisting of a double ferromagnetic bridge between two superconductors, with tunnel interfaces. The crossed Josephson current vanishes on average because the Andreev reflected hole does not follow the same sequence of impurities as the incoming electron. We show that i) the root mean square of the crossed Josephson current distribution is proportional to the square root of the junction area; and ii) the coherent coupling mediated by fluctuations is ``long range'' since it decays over the ferromagnet phase coherence length $l_ϕ$, larger than the exchange length. We predict a crossed Josephson current due to fluctuations if the length of the ferromagnets is smaller than $l_ϕ$ and larger than the exchange length $ξ_h$.
description: 8 pages, 3 figures, modifications in the presentation
Concordia senza homonoia
Creators: name: Bianco, Elisabetta
Publisher: name: Università degli Studi di Torino - Dipartimento di Studi Storici
Year: 2014
Subjects: homonoia; concordia; composti di homo-; concord; logeo; phroneo; doxeo; phrazo

description: Quando si fa riferimento al concetto di concordia, la prima parola greca a cui si pensa è senz’altro homonoia; esiste invece una quantità sterminata di varianti che esprimono lo stesso concetto, distinguendosi di caso in caso solo per leggere sfumature. Si intende perciò qui dare un esempio di alcune voci che rendono ragione di questo panorama molto variegato, a partire perlopiù da un elemento unificante, ovvero lo stesso prefisso homo- che caratterizza la forma homonoia, ma in composizione con molti altri termini (logeo, phroneo, doxeo, phrazo, ecc.), che hanno dato a vita a composti a volte molto diffusi, a volte molto rari, ma sempre interessanti.

With reference to the concept of concord, the first Greek word that occurs is homonoia, but there is a great deal of other words that mean the same, only with little differences in shades. Here it will be given an example of some of these words, starting from the same prefix homo- of the term homonoia, but in composition with many others (such as logeo, phroneo, doxeo, phrazo, etc.), that gave birth to new composed words, sometimes very frequent, sometimes very rare, but always interesting.
description: HISTORIKA Studi di storia greca e romana, Vol 3 (2013)
The Reconstruction of Non-Minimal Derivative Coupling Inflationary Potentials
Creators: name: Fei, Qin
name: Yi, Zhu
name: Yang, Yingjie
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We derive the reconstruction formulae for the inflation model with the non-minimal derivative coupling term. If reconstructing the potential from the tensor-to-scalar ratio, we could obtain the potential without using the high friction limit. As an example, we reconstruct the potential from the parametrization $r=8α/(N+β)^γ$, which is a general form of the $α$-attractor. The reconstructed potential has the same asymptotic behavior as the T- and E-model if we choose $γ=2$ and $α\ll1$. We also discuss the constraints from the reheating phase preceding the radiation domination by assuming the parameter $w_{re}$ of state equation during reheating is a constant. The scale of big-bang nucleosynthesis could put a up limit on $n_s$ if $w_{re}=2/3$ and a low limit on $n_s$ if $w_{re}=1/6$.
description: 12 pages, 3 figures
Instantons, Assisted Inflation and Heterotic M-theory
Creators: name: Ward, John
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We first investigate the attractor solution associated with Assisted Inflation in Heterotic M-Theory to see if it is stable. By perturbing the solutions we find a solitary stable fixed point with the general path through phase space dependent upon the Calabi-Yau data and the number of five-branes. We then go on to examine the effect of including non-perturbative corrections to the inflaton potential arising from boundary-brane instantons as well as higher order brane interaction terms. The result is that Assisted Inflation is only possible if we allow fine tuning of the superpotential, and that generic non-perturbative superpotentials will prevent this kind of inflation from occurring.
description: 17 pages, 1 figure. More references added
Plasmon energy losses in shear bands of metallic glass
Creators: name: Grove, Maximilian
name: Peterlechner, Martin
name: Rösner, Harald
name: Imlau, Robert
name: Zaccone, Alessio
name: Wilde, Gerhard
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Shear bands resulting from plastic deformation in cold-rolled Al$_{88}$Y$_{7}$Fe$_{5}$ metallic glass were observed to display alternating density changes along their propagation direction. Electron-energy loss spectroscopy (EELS) was used to investigate the volume plasmon energy losses in and around shear bands. Energy shifts of the peak centre and changes in the peak width (FWHM) reflecting the damping were precisely determined within an accuracy of a few meV using an open source python module (Hyperspy) to fit the shapes of the plasmon and zero-loss peaks with Lorentzian functions. The maximum bulk plasmon energy shifts were calculated for the bright and dark shear band segments relative to the matrix to be about 38 and 14 meV, respectively. The damping was observed to be larger for the denser regions. The analysis presented here suggests that the changes in the plasmons are caused by two contributions: (i) Variable damping in the shear band segments due to changes in the medium-range order (MRO). This affects the static structure factor S(k), which, in turn, leads to either reduced or increased damping according to the Ziman-Baym formula. (ii) The ionic density and the effective electron mass appearing in the zero-momentum plasmon frequency formula $E_p(q=0)$ are coupled and give rise to small variations in the plasmon energy. The model predicts plasmon energy shifts in the order of meV.
Text: Mining
Creators: name: Criollo, Mario
name: Dabkowski, Maksymilian
name: Quenamá, Leidy
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: con

description: They are protecting the ancestral territory of the Sinangoé community and they are fighting so that the miners do not enter and so that nobody contaminates the river because that can affect the fish which feed their families.
Text: Fishing
Creators: name: Criollo, Mario
name: Dabkowski, Maksymilian
name: Quenamá, Leidy
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: con

description: Before, when he was young, when lived in Sinangoé, there were plenty of fish in the Aguarico river, but now there aren't as many.
Nearby cycles and composition with a non-degenerate polynomial
Creators: name: Guibert, G.
name: Loeser, F.
name: Merle, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14B05, 14B07, 14J17, 32S05, 32S25, 32S30, 32S35, 32S55

description: We compute the motivic nearby cycles of functions obtained by composition with a polynomial which is non-degenerate with respect to its Newton polyhedron. Our result involves new convolution operators and generalized nearby cycles.
description: 13 pages
Spaces of quasi-exponentials and representations of gl_N
Creators: name: Mukhin, E.
name: Tarasov, V.
name: Varchenko, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Algebra (math.QA)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider the action of the Bethe algebra B_K on (\otimes_{s=1}^k L_{λ^{(s)}})_λ, the weight subspace of weight $λ$ of the tensor product of k polynomial irreducible gl_N-modules with highest weights λ^{(1)},...,λ^{(k)}, respectively. The Bethe algebra depends on N complex numbers K=(K_1,...,K_N). Under the assumption that K_1,...,K_N are distinct, we prove that the image of B_K in the endomorphisms of (\otimes_{s=1}^k L_{λ^{(s)}})_λis isomorphic to the algebra of functions on the intersection of k suitable Schubert cycles in the Grassmannian of N-dimensional spaces of quasi-exponentials with exponents K. We also prove that the B_K-module (\otimes_{s=1}^k L_{λ^{(s)}})_λis isomorphic to the coregular representation of that algebra of functions. We present a Bethe ansatz construction identifying the eigenvectors of the Bethe algebra with points of that intersection of Schubert cycles.
description: Latex, 29 pages
Variational principle and boundary terms in gravity à la Palatini
Creators: name: Gómez, Diego Sáez-Chillón
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A general $f(\mathcal{R})$ gravitational theory is considered within the Palatini formalism. By applying the variational principle and the usual conditions on the boundary, we show explicitly that a surface term remains such that as in their metric-compatible counterparts, an additional surface term has to be added in the gravitational action, which plays a fundamental role when calculating the entropy of the black hole.
description: 5 pages, version to be published in PLB
A one-dimensional solution of the Boltzmann transport equation with application to the compact modeling of modern bipolar transistors
Creators: name: St.Denis, Anthony Robert
Publisher: name: University of British Columbia
Year: 2009

description: The role of device design in the development of semiconductor technologies is an important one. To effectively design devices, the device engineer needs to understand the physics of device operation. The models used to predict device behavior should therefore be cast in such a form that the physics is readily identifiable. This is true for both compact device models and the detailed models of transport from which they are derived. A considerable effort has been expended here to develop models exhibiting this feature. The fundamental starting point for the transport analysis in this work is a one-dimensional, time-independent form of the Boltzmann transport equation (BTE). There are three main contributions made herein regarding the use of the BTE for analyzing transport in semiconductor devices. First, a field-free solution, valid for arbitrary boundary conditions and quite general collision integrals, is developed and used to study transport in the base of bipolar transistors, including both homojunction and heterojunction devices. Secondly, a kinetic approach to transport is used to develop an analogous solution for field-dependent transport. The field-dependent solution is used to make a study of the nature of carrier mobility in a forward-biased semiconductor barrier. Thirdly, forms for the incoming collision integrals are developed which involve integration over a single angle only, which makes them particularly well suited for use in both the field-free and field-dependent solutions developed in this work. In the device design process, it is very useful to appeal to compact device models in order to do preliminary designs, and to aid in the understanding of results from more detailed transport analyses. Compact models are closed form expressions describing device behavior, usually based on approximations of detailed device equations. In this work, compact models are developed which approximate the solution of the BTE in modern, short-base, bipolar transistors. Two models for collector current are derived. The first of these is appropriate for homojunction, and graded-heterojunction, devices. The second is appropriate for abruptheterojunction devices. A third compact model is derived for the base transit time in abrupt heterojunction devices. Throughout this work, an attempt is made to understand transport phenomena in terms of the electron distribution function. This leads to a more fundamental understanding of device operation than can be gained by applying concepts inherent to drift-diffusion analyses, such as drift and diffusion current densities and quasi-Fermi levels. Such an understanding is necessary for the design and analysis of future, and state of the art present, devices whose intended very high frequency of operation demands that certain critical dimensions be reduced below the limits within which traditional drift-diffusion analysis applies.
Spatiotemporal Differences of COVID-19 Infection among Healthcare Workers and Patients in China from January to March 2020
Creators: name: Wang, Peixiao
name: Zhu, Xinyan
name: Guo, Wei
name: Ren, Hui
name: Hu, Tao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Studying the spatiotemporal differences in coronavirus disease (COVID-19) between social groups such as healthcare workers (HCWs) and patients can aid in formulating epidemic containment policies. Most previous studies of the spatiotemporal characteristics of COVID-19 were conducted in a single group and did not explore the differences between groups. To fill this research gap, this study assessed the spatiotemporal characteristics and differences among patients and HCWs infection in Wuhan, Hubei (excluding Wuhan), and China (excluding Hubei). The temporal difference was greater in Wuhan than in the rest of Hubei, and was greater in Hubei (excluding Wuhan) than in the rest of China. The incidence was high in healthcare workers in the early stages of the epidemic. Therefore, it is important to strengthen the protective measures for healthcare workers in the early stage of the epidemic. The spatial difference was less in Wuhan than in the rest of Hubei, and less in Hubei (excluding Wuhan) than in the rest of China. The spatial distribution of healthcare worker infections can be used to infer the spatial distribution of the epidemic in the early stage and to formulate control measures accordingly.
An empirical calibration of sulphur abundance in ionised gaseous nebulae
Creators: name: Perez-Montero, Enrique
name: Diaz, Angeles I.
name: Vilchez, Jose M.
name: Kehrig, Carolina
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have derived an empirical calibration of the abundance of S/H as a function of the S23 parameter, defined using the bright sulphur lines of [SII] and SIII]. Contrary to what is the case for the widely used O$_{23}$ parameter, the calibration remains single valued up to the abundance values observed in the disk HII regions. The calibration is based on a large sample of nebulae for which direct determinations of electron temperatures exist and the sulphur chemical abundances can be directly derived. ICFs, as derived from the [SIV] 10.52 $μ$ emission line (ISO observations), are shown to be well reproduced by Barker's formula for a value of alpha = 2.5. At any rate, only about 30% of the objects in the sample require ICFs larger than 1.2. The use of the proposed calibration opens the possibility of performing abundance analysis with red to IR spectroscopic data using S/H as a metallicity tracer.
description: 9 pages, 5 figures. Accepted for publication by Astronomy & Astrophysics
Light-emitting current of electrically driven single-photon sources
Creators: name: Kuo, David M. -T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The time-dependent tunnelling current arising from the electron-hole recombination of exciton state is theoretically studied using the nonequilibrium Green's function technique and the Anderson model with two energy levels. The charge conservation and gauge invariance are satisfied in the tunnelling current. Apart from the classical capacitive charging and discharging behavior, interesting oscillations superimpose on the tunnelling current for the applied rectangular pulse voltage.
description: 14 pages, 5 figures
ILC Study Questions for Snowmass 2021
Creators: name: Fujii, Keisuke
name: Grojean, Christophe
name: Peskin, Michael E.
name: Barklow, Timothy
name: Gao, Yuanning
name: Kanemura, Shinya
name: List, Jenny
name: Nojiri, Mihoko
name: Perelstein, Maxim
name: Poeschl, Roman
name: Reuter, Juergen
name: Simon, Frank
name: Tanabe, Tomohiko
name: Wells, James
name: Berggren, Carl Mikael
name: Fullana, Esteban
name: Fuster, Juan
name: Gaede, Frank
name: Jeans, Daniel
name: Irles, Adrián
name: Jung, Sunghoon
name: Kawada, Shin-ichi
name: Matsumoto, Shigeki
name: Potter, Chris
name: Strube, Jan
name: Suehara, Taikan
name: Tian, Junping
name: Vos, Marcel
name: Wilson, Graham
name: Yamamoto, Hitoshi
name: Yonamine, Ryo
name: Zarnecki, Aleksander Filip
name: Brau, James
name: Murayama, Hitoshi
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2020

description: To aid contributions to the Snowmass 2021 US Community Study on physics at the International Linear Collider and other proposed $e^+e^-$ colliders, we present a list of study questions that could be the basis of useful Snowmass projects. We accompany this with links to references and resources on $e^+e^-$ physics, and a description of a new software framework that we are preparing for $e^+e^-$ studies at Snowmass.
Galactic and Cosmic Chemical Evolution with Hypernovae
Creators: name: Kobayashi, Chiaki
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We provide new nucleosynthesis yields depending on metallicity and energy (i.e., (normal supernovae and hypernovae), and show the evolution of heavy element abundances from C to Zn in the solar neighborhood. We then show the chemodynamical simulation of the Milky Way Galaxy and discuss the G-dwarf problem. We finally show the cosmological simulation and discuss the galaxy formation and chemical enrichment.
description: 6 pages, 3 figure. To appear in the Proceedings of the IAU Symposium 228 "From Li to U: Elemental Tracers of Early Cosmic Evolution", eds. V. Hill, P. Francois and F. Primas, Cambridge University Press
Quantum Hall Effect of Massless Dirac Fermions in a Vanishing Magnetic Field
Creators: name: Nomura, Kentaro
name: Ryu, Shinsei
name: Koshino, Mikito
name: Mudry, Christopher
name: Furusaki, Akira
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The effect of strong long-range disorder on the quantization of the Hall conductivity $σ_{xy}$ in graphene is studied numerically. It is shown that increasing Landau-level mixing progressively destroys all plateaus in $σ_{xy}$ except the plateaus at $σ_{xy}=\mp e^2/2h$ (per valley and per spin). The critical state at the charge-neutral Dirac point is robust to strong disorder and belongs to the universality class of the conventional plateau transitions in the integer quantum Hall effect. We propose that the breaking of time-reversal symmetry by ripples in graphene can realize this quantum critical point in a vanishing magnetic field.
description: 5 pages, 4 figures
title: Educating teachers for Ontario's multi-religious classroom: accommodating religious learners and respecting student autonomy
Creators: name: Bursey, Wallace Dean
Publisher: name: University of Glasgow
Year: 2018
Subjects: subject: Teacher education, religious education, learner autonomy, diversity, secular classroom, higher education.

description: The 2015 revisions to the Ontario teacher education program were intended to give greater attention to diversity in the Ontario classroom and provide new teachers with more knowledge of the Ontario context. Using an interpretivist methodology, a careful examination of the curriculum changes undertaken by the Ontario Ministry of Education and the Ontario College of Teachers indicates that these objectives have not been met. Despite being an integral part of the identity and experience of a large number of Ontario teachers and students, religion is not one of the diversities given attention to in the revisions. This omission has revealed a gap in the Ontario teacher education curriculum in which the religious diversity component of the Ontario context is largely ignored. The gap in teacher education has also created a misunderstanding of the nature and intent of the secular classroom where, instead of being a place where all religions are given equal attention and one that fostering healthy religious conversations, it has become an environment of fear and silence, where teacher and students are unsure of how to engage it religious conversations. My research concludes that the OCT curriculum does not provide sufficient curriculum content that addresses teacher knowledge, skills and attitudes in the area of religion, nor does it provide information about religious belief systems and world views or clarify religious language and terminology. Despite the fact that teachers and parents welcome the academic, non-confessional study of religion in the classroom, the OCT and the OME have not indicated through the revisions that this is the direction in which they intend to proceed. Enacting changes to increase the amount of time required for teacher education has not prepared teachers to address the multi-religious context of the Ontario classroom or to meet the needs of religious students.
X-ray propagation through hollow channel: PolyCAD - a ray tracing code (1)
Creators: name: Hampai, D.
name: Dabagov, S. B.
name: Cappuccio, G.
name: Cibin, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A new CAD program, PolyCAD, designed for X-ray photon tracing in polycapillary optics is described. To understand the PolyCAD code and its results, the theoretical basis of X-ray transmission by a single cylindrical channel (monocapillary) is discussed first. Then the simplest cases of cylindrically and conically shaped polycapillary optics are examined. PolyCAD allows any type of X-ray source to be used: an X-ray tube of finite beam dimensions or an astrophysical object can be simulated in combination with the polycapillary optics. The radiation distribution images formed on a screen located at various focal distances are discussed. The good agreement of some of the PolyCAD results with those reported in earlier papers validate the code. This is the first paper of a series dedicated to the development of an exhaustive CAD program, work is in progress to develop the code to include other polycapillary-optics shapes, such as semi-lenses and full-lenses.
description: Submitted to Applied Optics