cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pseudospheres in geometry and physics: from Beltrami to De Sitter and
  beyond
Creators: name: B. Bertotti
name: R. Catenacci
name: C. Dappiaggi
Publisher: name: INFN Open Access Repository
Year: 2005

description: We review the extraordinary fertility and proliferation in mathematics and
physics of the concept of a surface with constant and negative Gaussian
curvature. In his outstanding 1868 paper Beltrami discussed how non-Euclidean
geometry is actually realized and displayed in a disk on the plane. This metric
is intrinsically defined and definite but only if indefinite metrics are
introduced it is possible to fully understand the structure of pseudospheres.
In a 3D flat space R^3 the fundamental quadric is introduced, with the same
signature as the metric of R^3; this leads to 3 kinds of surfaces with constant
Gaussian curvature: the sphere, the single-sheet hyperboloid and the two-sheet
hyperboloid; the last one is shown to be isomorphic to Beltrami's disk. The
spacetime corresponding to the single-sheet case is de Sitter cosmological
model, which, due to its symmetry, has an important role in cosmology. When two
of the three fundamental quadrics are combined, a simple, yet deep, solution of
Einstein-Maxwell equations corresponding to a uniform electromagnetic field is
obtained with many applications in mathematical physics. One of them is a "no
go" theorem: when one tries to frame a Riemannian four-dimensional manifold in
a Kahlerian structure, it is found that, while this is generically possible
with a definite signature, in spacetime only BR fulfills the requirement. The
BR metric plays an important role in the exploration of new principles in
fundamental physical theories; we briefly mention some examples related to the
horizon of a black hole and the dilaton in string theory.
title: Ð­ÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: Ð¡ÑÐ»Ð¾ÐµÐ²Ð°, Ð¡Ð²ÐµÑÐ»Ð°Ð½Ð°
name: ÐÐ±ÑÑÐ¾Ð²Ð°, ÐÐºÐ°ÑÐµÑÐ¸Ð½Ð°
name: ÐÐ¾Ð³Ð´Ð°Ð½Ð¾Ð²Ð°, Ð¢Ð°ÑÑÑÐ½Ð°
name: ÐÑÑÐ¾Ð²Ð°, ÐÐºÐ°ÑÐµÑÐ¸Ð½Ð°
name: ÐÐ¼ÐµÐ»ÑÑÐ½Ð¾Ð²Ð°, ÐÐ°ÑÑÑ
name: ÐÐµÐ¿Ð¿, ÐÐ°ÑÐ°Ð»ÑÑ
name: ÐÐ»ÑÑÐ°ÑÐµÐ²Ð°, ÐÐ°ÑÐ°Ð»ÑÑ
name: ÐÐµÐºÑÐ°ÑÐ¾Ð²Ð°, Ð¢Ð°ÑÑÑÐ½Ð°
name: Ð¡ÑÐµÐ¿Ð°Ð½ÑÑÐº, ÐÐ½Ð´ÑÐµÐ¹
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2023
Subjects: ÐÑÐ¾Ð¼ÑÑÐ»ÐµÐ½Ð½ÑÐµ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ

description: Ð Ð¿Ð¾ÑÐ¾Ð±Ð¸Ð¸ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½Ð¾ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÑÑÑÑ Ð²Ð¾Ð¿ÑÐ¾ÑÑ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ¸ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ, Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾-Ð¿ÑÐ°Ð²Ð¾Ð²ÑÐµ Ð¾ÑÐ½Ð¾Ð²Ñ ÐµÐ³Ð¾ ÑÑÐ½ÐºÑÐ¸Ð¾Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Ð´Ð°ÐµÑÑÑ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ° ÑÐµÑÑÑÑÐ¾Ð², Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÐ¼ÑÑ Ð´Ð»Ñ Ð¾ÑÑÑÐµÑÑÐ²Ð»ÐµÐ½Ð¸Ñ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ (Ð²Ð½ÐµÐ¾Ð±Ð¾ÑÐ¾ÑÐ½ÑÐµ Ð°ÐºÑÐ¸Ð²Ñ, Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÑÐµÐ´ÑÑÐ²Ð° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ, Ð¾Ð±Ð¾ÑÐ¾ÑÐ½ÑÐµ ÑÑÐµÐ´ÑÑÐ²Ð° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ, ÑÑÑÐ´Ð¾Ð²ÑÐµ ÑÐµÑÑÑÑÑ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ), Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ð¿Ð¾Ð½ÑÑÐ¸Ðµ Ð¸ ÐºÐ»Ð°ÑÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ Ð·Ð°ÑÑÐ°Ñ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ, ÑÐµÐ½Ð¾Ð²Ð°Ñ Ð¿Ð¾Ð»Ð¸ÑÐ¸ÐºÐ° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ, Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»Ð¸, ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸Ð·ÑÑÑÐ¸Ðµ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¸ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÑÑÑÑÐ¾Ð², Ð¾ÑÐ½Ð¾Ð²Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸ÐµÐ¼. ÐÐ°ÑÐµÑÐ¸Ð°Ð» Ð² Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð½Ð¾Ð¹ ÑÐµÐ´Ð°ÐºÑÐ¸Ð¸ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÐµÑ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸ÑÐ¼ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÑÐ°Ð½Ð´Ð°ÑÑÐ°, ÑÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸ÐµÐ¹ ÑÐ°Ð¼Ð¾ÑÑÐ¾ÑÑÐµÐ»ÑÐ½Ð¾ (Ð¡Ð£ÐÐ¡), Ð¡ÐÐ±ÐÐ£ Ð¸ ÑÐ°Ð±Ð¾ÑÐµÐ¹ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ñ Â«Ð­ÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸ÑÂ» Ð² ÑÐ°Ð¼ÐºÐ°Ñ Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ¾Ð¹ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸ÑÐ¼ 38.03.01 Â«Ð­ÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ°Â», 38.03.02 Â«ÐÐµÐ½ÐµÐ´Ð¶Ð¼ÐµÐ½ÑÂ», 38.03.03 Â«Ð£Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð»Ð¾Ð¼Â», 38.03.04 Â«ÐÐ¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ðµ Ð¸ Ð¼ÑÐ½Ð¸ÑÐ¸Ð¿Ð°Ð»ÑÐ½Ð¾Ðµ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸ÐµÂ», 38.03.05 Â«ÐÐ¸Ð·Ð½ÐµÑ-Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸ÐºÐ°Â», 38.03.06 Â«Ð¢Ð¾ÑÐ³Ð¾Ð²Ð¾Ðµ Ð´ÐµÐ»Ð¾Â». Ð£ÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ Ð¿ÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð¾ Ð´Ð»Ñ Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ Ð»ÐµÐºÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ ÐºÑÑÑÐ° Ð¿Ð¾ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ðµ Â«Ð­ÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸ÑÂ».
Primordial nucleosynthesis in higher dimensional cosmology
Creators: name: Chatterjee, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate nucleosynthesis and element formation in the early universe in the framework of higher dimensional cosmology. For this purpose we utilize a previous solution of the present author, which may be termed as the generalized Friedmann-Robertson-Walker model. We find that temperature decays less rapidly in higher dimensional cosmology, which we believe may have nontrivial consequences \emph{vis-a-vis} primordial physics.
Broken Pairs and High-Spin States in Transitional Nuclei
Creators: name: G. Bonsignori
name: D. Vretenar
name: S. Cacciamani
name: L. Corradini
Publisher: name: INFN Open Access Repository
Year: 1997

description: The Interacting Boson plus broken-pairs Model has been used to describe
high-spin bands in spherical and transitional nuclei. In the spherical nucleus
$^{104}$Cd the model reproduces the structure of high-spin bands built on a
vibrational structure. Model calculations performed with a single set of
parameters reproduce ten bands in $^{136}$Nd, including the two dipole
high-spin bands based on the $(\pi h_{11/2})^2$ $(\nu h_{11/2})^2$
configuration.
title: ÐÐµÑÐ¾Ð´Ð¸ÐºÐ° Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ "ÐÐ·Ð´Ð°ÑÐµÐ»ÑÑÐºÐ¾Ðµ Ð´ÐµÐ»Ð¾" Ð±Ð°Ð·Ð¾Ð²Ð¾Ð¹ Ð¿ÑÐ¾ÑÐ¸Ð»ÑÐ½Ð¾Ð¹ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ñ "ÐÐµÐ½ÐµÐ´Ð¶Ð¼ÐµÐ½Ñ Ð² Ð¡ÐÐ"
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: Ð¨Ð°ÐºÑÑÐ¾Ð², ÐÐ½Ð´ÑÐµÐ¹
Publisher: name: ÐÐ·Ð´-Ð²Ð¾ ÐÐ¾Ð»Ð¸ÑÐµÑÐ½. ÑÐ½-ÑÐ°
Year: 2017
Subjects: Ð¼ÐµÐ½ÐµÐ´Ð¶Ð¼ÐµÐ½Ñ
ÑÑÐµÐ´ÑÑÐ²Ð° Ð¼Ð°ÑÑÐ¾Ð²Ð¾Ð¹ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸
ÑÑÐµÐ±Ð½Ð¸ÐºÐ¸ Ð¸ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ Ð´Ð»Ñ Ð²ÑÐ·Ð¾Ð²

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title: ÐÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½Ð°Ñ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ñ ÑÑÑÐ´Ð°, ÐµÐµ Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð¸Ðµ Ð² ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ ÑÑÑÐ´Ð¾Ð²ÑÑ Ð¿ÑÐ°Ð²Ð¾Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ð¹
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Year: 2018
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title: ÐÐ°ÑÐµÐ¼Ð°ÑÐ¸ÐºÐ°. ÐÑÐ¸ÐºÐ»Ð°Ð´Ð½Ð°Ñ Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÐºÐ° Ð² Ð³ÑÐ¼Ð°Ð½Ð¸ÑÐ°ÑÐ½Ð¾Ð¹ ÑÑÐµÑÐµ: Ð² Ð³ÐµÐ½ÐµÐ°Ð»Ð¾Ð³Ð¸Ð¸, Ð¸ÑÑÐ¾ÑÐ¸Ð¸, ÑÐºÐ¾Ð»Ð¾Ð³Ð¸Ð¸, Ð»Ð¸Ð½Ð³Ð²Ð¸ÑÑÐ¸ÐºÐµ. ÐÐ±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ ÑÐ¸Ð²Ð¸Ð»Ð¸Ð·Ð°ÑÐ¸Ð¹ Ð¼Ð¸ÑÐ°
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: ÐÐ°ÐºÑÐ¸Ð¼Ð¾Ð², Ð®ÑÐ¸Ð¹
Publisher: name: ÐÐ·Ð´-Ð²Ð¾ ÐÐ¾Ð»Ð¸ÑÐµÑÐ½. ÑÐ½-ÑÐ°
Year: 2017
Subjects: ÐÐ°ÑÐµÐ¼Ð°ÑÐ¸ÐºÐ° Ð¿ÑÐ¸ÐºÐ»Ð°Ð´Ð½Ð°Ñ
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description: ÐÐµÑÐ°ÑÐ°ÐµÑÑÑ Ð¿Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ Ð¡Ð¾Ð²ÐµÑÐ° Ð¿Ð¾ Ð¸Ð·Ð´Ð°ÑÐµÐ»ÑÑÐºÐ¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð£ÑÐµÐ½Ð¾Ð³Ð¾ ÑÐ¾Ð²ÐµÑÐ° Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¾Ð³Ð¾ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑÐ° ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Photoproduction through Chern-Simons Term Induced Interactions in Holographic QCD
Creators: name: Domokos, S. K.
name: Grigoryan, H. R.
name: Harvey, J. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We employ both top-down and bottom-up holographic dual models of QCD to calculate vertex functions and couplings that are induced by the five dimensional Chern-Simons term. We use these couplings to study the photoproduction of $f_1$ mesons. The Chern-Simons-term-induced interaction leads to a simple relation between the polarization of the incoming photon and the final state $f_1$ meson which should allow a clear separation of this interaction from competing processes.
description: 22 pages, 2 figures
Three-nucleon portrait with pion
Creators: name: L. Canton
name: G. Pisent
name: W. Schadow
name: T. Melde
name: J. P. Svenne
Publisher: name: INFN Open Access Repository
Year: 2001

description: We report on recent results obtained by the above collaboration on the
collision processes involving three nucleons, where we pay particular attention
on the dynamical role of the pion. After discussing the case at intermediate
energies, where real pions can be produced and detected, we have considered the
case at lower energies, where the pions being exchanged are virtual. The study
has revealed the presence of some new pion-exchange mechanisms, which leads to
a new three-nucleon force of tensor structure. Recently, the effect of this
tensor three-nucleon force to the spin observables for neutron-deuteron
scattering at low energy has been analyzed, and will be briefly reviewed.
A theoretical and experimental investigation of metal-semiconductor contacts
Creators: name: Horita, Robert Eiji
Publisher: name: University of British Columbia
Year: 2011

description: Metal-semiconductor contacts have been known empirically to obey a modified diode equation I = I (exp qV/akT - 1) where the parameter 'a' often took values greater than two. However, previous theories, which are briefly summarized in the thesis, could not simply account for the anomaly where 'a' is greater than two. Previous theories are extended by considering one-dimensional bipolar flow of carriers and neglecting recombination in a homogeneous semiconductor filament with a rectifying and an ohmic contact at opposite ends. The zero-electron-current theory by Borneman et. al. (1955) is extended to high injection levels by using the junction relations of Misawa (1955). Then the non-zero-electron-current theory is developed. This theory shows that 'a' is unity for low Injection Into extrinsic semiconductors and that a = (3b-M)/(b-M) for arbitrary injection into intrinsic semiconductors and, for high injection Into extrinsic semiconductors, where 'M' is the electron to hole current ratio and 'b' is the electron to hole mobility ratio. Thus, 'a' can take any value depending on the magnitude of M/b. To check the non-zero-electron-current theory, experiments were performed only on n-type germanium. Rectifying metal-semiconductor contacts were made by electroplating copper and rhodium on germanium and ohmic contacts were made by alloying antimony-doped gold wire in a nitrogen atmosphere. A side-arm probe adjacent to the plated-contact measured the voltage across the contact. For the rhodium-contact specimen, two side-arms adjacent to the rhodium contact on opposite sides of the germanium filament were used to measure the transverse a-c resistance as a function of longitudinal d-c current. This measurement demonstrated the occurrence of injection and extraction at the contact and that the level of injection was from moderate to high in the vicinity of the contact for longitudinal current density between about 10 mA/cm² and 1000 mA/cm² . Comparison of the I-V measurements of the contacts with the non-zero-electron-current theory indicated that an intermediate level of injection occurred at the rhodium contact for longitudinal current density between about 0.1 mA/cm² and 100 mA/cm² and that high injection occurred, with M = 4.94, at the copper contact for current density between about 1 mA/cm² and 50 mA/cm². Thus, the level of injection can be calculated by comparison of the experimental value of 'a' with the non-zero-electron-current theory.
Pure, $Si$ and $sp^3$-doped Graphene nanoflakes: a numerical study of density of states
Creators: name: Olivi-Tran, Nathalie
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We built graphene nanoflakes doped or not with $C$ atoms in the $sp^3$ hybridization or with $Si$ atoms. These nanoflakes are isolated, i.e. are not connected to any object (substrate or junction). We used a modified tight binding method to compute the $π$ and $σ$ density of states. The nanoflakes are semiconducting (due to the armchair geometry of their boundaries) when their are pure but the become conducting when doped because doping removes the degeneracy of the density of states levels. Moreover, we showed that the $π$ Fermi level and the Fermi level of both $π$ and $σ$ electrons are not superimposed for small isolated nanoflakes.
title: ÐÐ¸ÑÐºÑÐµÑÐ½Ð°Ñ Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÐºÐ°. Ð¢ÐµÐ¾ÑÐ¸Ñ Ð¼Ð½Ð¾Ð¶ÐµÑÑÐ² Ð¸ Ð°Ð»Ð³ÐµÐ±ÑÐ° Ð»Ð¾Ð³Ð¸ÐºÐ¸
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: Ð¡Ð¸Ð»ÐºÐ¸Ð½Ð°, ÐÐ°Ð»Ð¸Ð½Ð°
Publisher: name: ÐÐ·Ð´-Ð²Ð¾ ÐÐ¾Ð»Ð¸ÑÐµÑÐ½. ÑÐ½-ÑÐ°
Year: 2012
Subjects: ÐÐ¸ÑÐºÑÐµÑÐ½Ð°Ñ Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÐºÐ°
ÐÐ½Ð¾Ð¶ÐµÑÑÐ² ÑÐµÐ¾ÑÐ¸Ñ
ÐÐ»Ð³ÐµÐ±ÑÐ° Ð»Ð¾Ð³Ð¸ÐºÐ¸

description: Ð£ÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÐµÑ ÑÐµÐ´ÐµÑÐ°Ð»ÑÐ½ÑÐ¼ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½ÑÐ¼ ÑÑÐ°Ð½Ð´Ð°ÑÑÐ°Ð¼ Ð²ÑÑÑÐµÐ³Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸ÑÐ¼ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ¾Ð² Â«ÐÑÐ¸ÐºÐ»Ð°Ð´Ð½Ð°Ñ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸ÐºÐ°Â» Ð¸ Â«ÐÐ¸Ð·Ð½ÐµÑ- Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸ÐºÐ°Â». Ð Ð½ÐµÐ¼ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐ°Ð·Ð´ÐµÐ»Ñ Ð´Ð¸ÑÐºÑÐµÑÐ½Ð¾Ð¹ Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÐºÐ¸ Â«Ð¢ÐµÐ¾ÑÐ¸Ñ Ð¼Ð½Ð¾Ð¶ÐµÑÑÐ²Â», Â«ÐÑÐ½Ð¾ÑÐµÐ½Ð¸Ñ Ð¸ ÑÑÐ½ÐºÑÐ¸Ð¸Â», Â«ÐÐ»Ð³ÐµÐ±ÑÐ° Ð²ÑÑÐºÐ°Ð·ÑÐ²Ð°Ð½Ð¸Ð¹ Â», Â«ÐÐ»Ð³ÐµÐ±ÑÐ° Ð¿ÑÐµÐ´Ð¸ÐºÐ°ÑÐ¾Ð²Â». ÐÐ·Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ ÑÑÐ°Ð´Ð¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð´Ð¾Ð¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ð¸ÐµÐ¼ Ð¾ÑÐ½Ð¾Ð² ÑÐµÐ¾ÑÐ¸Ð¸ Ð½ÐµÑÐµÑÐºÐ¸Ñ Ð¼Ð½Ð¾Ð¶ÐµÑÑÐ², Ð²Ð²ÐµÐ´ÐµÐ½Ð¸ÐµÐ¼ Ð¿Ð¾Ð½ÑÑÐ¸Ð¹ Ð½ÐµÑÐµÑÐºÐ¸Ñ Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ð¹ Ð¸ Ð½ÐµÑÐµÑÐºÐ¸Ñ Ð²ÑÑÐºÐ°Ð·ÑÐ²Ð°Ð½Ð¸Ð¹, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÑÑÑ ÑÐ¾Ð±Ð¾Ð¹ ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÐ¹ Ð°Ð¿Ð¿Ð°ÑÐ°Ñ ÑÐ¾ÑÐ¼Ð°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐ»Ð°Ð±Ð¾ ÑÑÑÑÐºÑÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼ Ð¸ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð², Ð² ÑÐ¾Ð¼ ÑÐ¸ÑÐ»Ðµ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ. ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ¾Ð´ÐµÑÐ¶Ð¸Ñ Ð·Ð½Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÐ¸ÑÐ»Ð¾ ÑÑÐ°ÑÐµÐ»ÑÐ½Ð¾ ÑÐ°Ð·Ð¾Ð±ÑÐ°Ð½Ð½ÑÑ Ð¿ÑÐ¸Ð¼ÐµÑÐ¾Ð², Ð·Ð°Ð´Ð°Ñ Ð´Ð»Ñ ÑÐ°Ð¼Ð¾ÑÑÐ¾ÑÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ.
description: ÐÐµÑÐ°ÑÐ°ÐµÑÑÑ Ð¿Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ ÑÐµÐ´Ð°ÐºÑÐ¸Ð¾Ð½Ð½Ð¾-Ð¸Ð·Ð´Ð°ÑÐµÐ»ÑÑÐºÐ¾Ð³Ð¾ ÑÐ¾Ð²ÐµÑÐ° Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¾Ð³Ð¾ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑÐ°.
Chopped and sliced cones and representations of Kac-Moody algebras
Creators: name: Bliem, Thomas
Publisher: name: arXiv
Year: 2009
Subjects: subject: Representation Theory (math.RT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We introduce the notion of a chopped and sliced cone in combinatorial geometry and prove two structure theorems for the number of integral points in the individual slices of such a cone. We observe that this notion applies to weight multiplicities of Kac-Moody algebras and Littlewood-Richardson coefficients of semisimple Lie algebras, where we obtain the corresponding results.
description: 9 pages, 1 figure
Irreducible pionic effects in nucleon-deuteron scattering below 20 MeV
Creators: name: L. Canton
name: W. Schadow
name: J. Haidenbauer
Publisher: name: Eur.Phys.J. A14 (2002) 225-238
Year: 2001

description: The consequences of a recently introduced irreducible pionic effect in low
energy nucleon-deuteron scattering are analyzed. Differential cross-sections,
nucleon (vector) and deuteron (vector and tensor) analyzing powers, and four
different polarization transfer coefficients have been considered. This
3NF-like effect is generated by the pion-exchange diagram in presence of a
two-nucleon correlation and is partially cancelled by meson-retardation
contributions. Indications are provided that such type of effects are capable
to selectively increase the vector (nucleon and deuteron) analyzing powers,
while in the considered energy range they are almost negligible on the
differential cross sections. These indications, observed with different
realistic nucleon-nucleon interactions, provide additional evidences that such
3NF-like effects have indeed the potential to solve the puzzle of the vector
analyzing powers. Smaller but non negligible effects are observed for the other
spin observables. In some cases, we find that the modifications introduced by
such pionic effects on these spin observables (other than the vector analyzing
powers) are significant and interesting and could be observed by experiments.
On the importance of satellite lines to the He-like K ALPHA complex and the G ratio for calcium, iron, and nickel
Creators: name: Oelgoetz, J.
name: Fontes, C. J.
name: Zhang, H. L.
name: Nahar, S. N.
name: Pradhan, A. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: New, more detailed calculations of the emission spectra of the He-like K ALPHA complex of calcium, iron and nickel have been carried out using data from both distorted-wave and R-matrix calculations. The value of the GD ratio (an extended definition of the G ratio that accounts for the effect of resolved and unresolved satellite lines) is significantly enhanced at temperatures below the temperature of He-like maximum abundance. Furthermore it is shown that satellite lines are important contributors to the GD ratio such that GD/G>1 at temperatures well above the temperature of maximum abundance. These new calculations demonstrate, with an improved treatment of the KLn (n>=3) satellite lines, that K ALPHA satellite lines need to be included in models of He like spectra even at relatively high temperatures. The excellent agreement between spectra and line ratios calculated from R-matrix and distorted-wave data also confirms the validity of models based on distorted-wave data for highly charged systems, provided the effect of resonances are taken into account as independent processes.
description: 12 pages, 5 figures, to appear in Monthly Notices of the Royal Astronomical Society. The definitive version is available at www.blackwell-synergy.com
Green's Function Approach to Inclusive Electron Scattering
Creators: name: F. Capuzzi
name: C. Giusti
name: A. Meucci
name: F. D. Pacati
Publisher: name: INFN Open Access Repository
Year: 2003

description: A Green's function approach to the inclusive quasielastic ($e,e'$) scattering
is presented. The components of the nuclear response are written in terms of
the single-particle optical model Green's function. The explicit calculation of
the Green's function can be avoided by its spectral representation, which is
based on a biorthogonal expansion in terms of the eigenfunctions of the
non-Hermitian optical potential and of its Hermitian conjugate. This allows one
to treat final state interactions consistently in the inclusive ($e,e'$) and in
the exclusive ($e,e'N$) reactions. Numerical results for the longitudinal and
transverse response functions obtained in a nonrelativistic and in a
relativistic framework are presented and discussed also in comparison with
data.
The galactic unclassified B[e] star HD 50138. I. A possible new shell phase
Creators: name: Fernandes, Marcelo Borges
name: Kraus, Michaela
name: Chesneau, Olivier
name: de Souza, Armando Domiciano
name: de Araujo, Francisco Xavier
name: Stee, Philippe
name: Meilland, Anthony
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The observed spectral variation of HD 50138 has led different authors to classify it in a very wide range of spectral types and luminosity classes (from B5 to A0 and III to Ia) and at different evolutionary stages as either HAeBe star or classical Be. Aims: Based on new high-resolution optical spectroscopic data from 1999 and 2007 associated to a photometric analysis, the aim of this work is to provide a deep spectroscopic description and a new set of parameters for this unclassified southern B[e] star and its interstellar extinction. Methods: From our high-resolution optical spectroscopic data separated by 8 years, we perform a detailed spectral description, presenting the variations seen and discussing their possible origin. We derive the interstellar extinction to HD 50138 by taking the influences of the circumstellar matter in the form of dust and an ionized disk into account. Based on photometric data from the literature and the new Hipparcos distance, we obtain a revised set of parameters for HD 50138. Results: Because of the spectral changes, we tentatively suggest that a new shell phase could have taken place prior to our observations in 2007. We find a color excess value of E(B-V) = 0.08 mag, and from the photometric analysis, we suggest that HD 50138 is a B6-7 III-V star. A discussion of the different evolutionary scenarios is also provided.
description: Paper accepted for publication in A&A main journal (12 pages, 16 figures and a 3 pages-table). Language corrected version
Phenomenology and physical origin of shear-localization and shear-banding in complex fluids
Creators: name: Ovarlez, Guillaume
name: Rodts, Stéphane
name: Chateau, Xavier
name: Coussot, Philippe
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We review and compare the phenomenological aspects and physical origin of shear-localization and shear-banding in various material types, namely emulsions, suspensions, colloids, granular materials and micellar systems. It appears that shear-banding, which must be distinguished from the simple effect of coexisting static-flowing regions in yield stress fluids, occurs in the form of a progressive evolution of the local viscosity towards two significantly different values in two adjoining regions of the fluids in which the stress takes slightly different values. This suggests that from a global point of view shear-banding in these systems has a common physical origin: two physical phenomena (for example, in colloids, destructuration due to flow and restructuration due to aging) are in competition and, depending on the flow conditions, one of them becomes dominant and makes the system evolve in a specific direction.
description: The original publication is available at http://www.springerlink.com
ConvBoost: Boosting ConvNets for Sensor-based Activity Recognition
Creators: name: Shao, Shuai
name: Guan, Yu
name: Zhai, Bing
name: Missier, Paolo
name: Ploetz, Thomas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Human activity recognition (HAR) is one of the core research themes in ubiquitous and wearable computing. With the shift to deep learning (DL) based analysis approaches, it has become possible to extract high-level features and perform classification in an end-to-end manner. Despite their promising overall capabilities, DL-based HAR may suffer from overfitting due to the notoriously small, often inadequate, amounts of labeled sample data that are available for typical HAR applications. In response to such challenges, we propose ConvBoost -- a novel, three-layer, structured model architecture and boosting framework for convolutional network based HAR. Our framework generates additional training data from three different perspectives for improved HAR, aiming to alleviate the shortness of labeled training data in the field. Specifically, with the introduction of three conceptual layers--Sampling Layer, Data Augmentation Layer, and Resilient Layer -- we develop three "boosters" -- R-Frame, Mix-up, and C-Drop -- to enrich the per-epoch training data by dense-sampling, synthesizing, and simulating, respectively. These new conceptual layers and boosters, that are universally applicable for any kind of convolutional network, have been designed based on the characteristics of the sensor data and the concept of frame-wise HAR. In our experimental evaluation on three standard benchmarks (Opportunity, PAMAP2, GOTOV) we demonstrate the effectiveness of our ConvBoost framework for HAR applications based on variants of convolutional networks: vanilla CNN, ConvLSTM, and Attention Models. We achieved substantial performance gains for all of them, which suggests that the proposed approach is generic and can serve as a practical solution for boosting the performance of existing ConvNet-based HAR models. This is an open-source project, and the code can be found at https://github.com/sshao2013/ConvBoost
description: 21 pages
Probing warped extra dimension via gg -> h and h -> gamma gamma at LHC
Creators: name: Bhattacharyya, Gautam
name: Ray, Tirtha Sankar
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The processes gg -> h and h -> gamma gamma are of paramount importance in the context of Higgs search at the LHC. These processes are loop driven and hence could be sensitive to the presence of any new colored fermion states having a large coupling with the Higgs. Such a scenario arises in a warped extra dimensional theory, where the Higgs is confined to the TeV brane and the hierarchy of fermion masses is addressed by localizing them at different positions in the bulk. We show that the Yukawa coupling of the Higgs with the fermion Kaluza-Klein (KK) states can be order one irrespective of their zero mode masses. We observe that the gg -> h and h -> gamma gamma rates are substantially altered if the KK states lie within the reach of LHC. We provide both intuitive and numerical comparison between the RS and UED scenarios as regards their quantitative impact in such processes.
description: v3: 7 pages, 3 figs. Further clarifications added, matches version published in Phys Lett B
Bidding Strategies for Proportional Representation in Advertisement Campaigns
Creators: name: Navon, Inbal Livni
name: Peale, Charlotte
name: Reingold, Omer
name: Shen, Judy Hanwen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: F.0

description: Many companies rely on advertising platforms such as Google, Facebook, or Instagram to recruit a large and diverse applicant pool for job openings. Prior works have shown that equitable bidding may not result in equitable outcomes due to heterogeneous levels of competition for different types of individuals. Suggestions have been made to address this problem via revisions to the advertising platform. However, it may be challenging to convince platforms to undergo a costly re-vamp of their system, and in addition it might not offer the flexibility necessary to capture the many types of fairness notions and other constraints that advertisers would like to ensure. Instead, we consider alterations that make no change to the platform mechanism and instead change the bidding strategies used by advertisers. We compare two natural fairness objectives: one in which the advertisers must treat groups equally when bidding in order to achieve a yield with group-parity guarantees, and another in which the bids are not constrained and only the yield must satisfy parity constraints. We show that requiring parity with respect to both bids and yield can result in an arbitrarily large decrease in efficiency compared to requiring equal yield proportions alone. We find that autobidding is a natural way to realize this latter objective and show how existing work in this area can be extended to provide efficient bidding strategies that provide high utility while satisfying group parity constraints as well as deterministic and randomized rounding techniques to uphold these guarantees. Finally, we demonstrate the effectiveness of our proposed solutions on data adapted from a real-world employment dataset.
description: Foundations of Responsible Computing (FORC 2023)
Comparative Regge analysis of $Λ, Σ^0, Λ(1520)$ and
  $Θ^+$ production in $γp$, $πp$ and $pp$ reactions
Creators: name: V. Yu. Grishina
name: L. A. Kondratyuk
name: W. Cassing
name: M. Mirazita
name: P. Rossi
Publisher: name: Eur.Phys.J. A25 (2005) 141-150
Year: 2005

description: Using the Quark-Gluon Strings Model -- combined with Regge phenomenology --
we perform a comparative analysis of $\Lambda$, $\Sigma^0$, $\Lambda(1520)$ and
$\Theta^+$ production in binary reactions induced by photon, pion and proton
beams on the nucleon. We find that the existing experimental data on the
$\gamma p \to K^+ \Lambda$ differential and total cross sections can be
described very well by the model for photon energies $1 - 16$ GeV and $-t < 2$
GeV$^2$ assuming a dominant contribution of the $K^*$ Regge trajectory.
Moreover, using the same parameters we also reproduce the total $\gamma p \to
K^+ \Sigma^0$ and $\gamma p \to K^+ \Lambda(1520)$ cross sections suggesting a
'universality' of the Regge model. In order to check the consistency of the
approach we evaluate the differential and total cross sections for the reaction
$\pi^- p \to K^0 \Lambda$ which is also found to be dominated by the $K^*$
Regge trajectory. Using the apparent 'universality' of the Regge model we
extend our scheme to the analysis of the binary reactions $\gamma p \to
\bar{K}^0 \Theta^+$, $\pi^- p \to K^- \Theta^+$ and $pp \to \Sigma^+ \Theta^+$
as well as the exclusive and inclusive $\Theta^+$ production in the reactions
$pp \to p \bar{K}^0 \Theta^+$ and $pp \to \Theta^+ X$. Our detailed studies
demonstrate that $\Theta^+$ production does not follow the 'universality'
principle thus suggesting an essentially different internal structure of the
exotic baryon relative to conventional hyperons or hyperon resonances.
Diversity in the Tail of the Intersecting Brane Landscape
Creators: name: Rosenhaus, Vladimir
name: Taylor, Washington
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Techniques are developed for exploring the complete space of intersecting brane models on an orientifold. The classification of all solutions for the widely-studied T^6/Z_2 x Z_2 orientifold is made possible by computing all combinations of branes with negative tadpole contributions. This provides the necessary information to systematically and efficiently identify all models in this class with specific characteristics. In particular, all ways in which a desired group G can be realized by a system of intersecting branes can be enumerated in polynomial time. We identify all distinct brane realizations of the gauge groups SU(3) x SU(2) and SU(3) x SU(2) x U(1) which can be embedded in any model which is compatible with the tadpole and SUSY constraints. We compute the distribution of the number of generations of "quarks" and find that 3 is neither suppressed nor particularly enhanced compared to other odd generation numbers. The overall distribution of models is found to have a long tail. Despite disproportionate suppression of models in the tail by K-theory constraints, the tail in the distribution contains much of the diversity of low-energy physics structure.
description: 48 pages, 8 figures
Properties Of Solutions Of The Kpi Equation
Creators: name: M. Boiti
name: F. Fempinelli
Publisher: name: INFN Open Access Repository
Year: 1993

description: The Kadomtsev--Petviashvili I (KPI) is considered as a useful laboratory for
experimenting new theoretical tools able to handle the specific features of
integrable models in $2+1$ dimensions. The linearized version of the KPI
equation is first considered by solving the initial value problem for different
classes of initial data. Properties of the solutions in different cases are
analyzed in details. The obtained results are used as a guideline for studying
the properties of the solution $u(t,x,y)$ of the Kadomtsev--Petviashvili I
(KPI) equation with given initial data $u(0,x,y)$ belonging to the Schwartz
space. The spectral theory associated to KPI is studied in the space of the
Fourier transform of the solutions. The variables $p=\{p_1,p_2\}$ of the
Fourier space are shown to be the most convenient spectral variables to use for
spectral data. Spectral data are shown to decay rapidly at large $p$ but to be
discontinuous at $p=0$. Direct and inverse problems are solved with special
attention to the behaviour of all the quantities involved in the neighborhood
of $t=0$ and $p=0$. It is shown in particular that the solution $u(t,x,y)$ has
a time derivative discontinuous at $t=0$ and that at any $t\not=0$ it does not
belong to the Schwartz space no matter how small in norm and rapidly decaying
at large distances the initial data are chosen.
title: ÐÑÐ½Ð¾Ð²Ñ ÑÐµÐ¾ÑÐ¸Ð¸ ÐºÐ¾Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ. ÐÐ¸Ð½ÐµÐ¹Ð½ÑÐµ Ð³ÑÑÐ¿Ð¿Ð¾Ð²ÑÐµ Ð¸ ÑÐ¸ÐºÐ»Ð¸ÑÐµÑÐºÐ¸Ðµ ÐºÐ¾Ð´Ñ
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: Ð¡Ð¼Ð¸ÑÐ½Ð¾Ð², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
Publisher: name: ÐÐ·Ð´-Ð²Ð¾ Ð¡ÐÐ±ÐÐ¢Ð£
Year: 1998
Subjects: ÐÐ¾Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ

description: ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÐµÑ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð¼Ñ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°ÑÐµÐ»ÑÐ½Ð¾Ð¼Ñ ÑÑÐ°Ð½Ð´Ð°ÑÑÑ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ñ "Ð¢ÐµÐ¾ÑÐ¸Ñ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸" Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ¾Ð¹ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ 55280') "ÐÐ½ÑÐ¾ÑÐ¼Ð°ÑÐ¸ÐºÐ° Ð¸ Ð²ÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½Ð°Ñ ÑÐµÑÐ½Ð¸ÐºÐ°". Ð Ð½ÐµÐ¼ Ð´Ð¾ÑÑÐ°ÑÐ¾ÑÐ½Ð¾ Ð¿Ð¾Ð»Ð½Ð¾ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð° ÑÐµÐ¾ÑÐ¸Ñ Ð»Ð¸Ð½ÐµÐ¹Ð½ÑÑ Ð½ÐµÑÐ¸ÐºÐ»Ð¸ÑÐµÑÐºÐ¸Ñ Ð³ÑÑÐ¿Ð¿Ð¾Ð²ÑÑ Ð¸ ÑÐ¸ÐºÐ»Ð¸ÑÐµÑÐºÐ¸Ñ ÐºÐ¾Ð´Ð¾Ð², ÐºÐ¾Ð´Ð¾Ð² ÐÐ§Ð¥ Ð¸ Ð Ð¸Ð´Ð° - Ð¡Ð¾Ð»Ð¾Ð¼Ð¾Ð½Ð°. ÐÐ¾Ð¼Ð¿Ð°ÐºÑÐ½Ð¾ Ð¸ Ð´Ð¾ÑÑÑÐ¿Ð½Ð¾ Ð´Ð»Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð²ÑÐ·Ð° Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐµÐ¾ÑÐ¸Ð¸ ÐºÐ¾Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð² ÑÐ°Ð¼ÐºÐ°Ñ Ð²ÑÐµÐ¼ÐµÐ½Ð¸, Ð¾ÑÐ²ÐµÐ´ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð½Ð° Ð¸Ð·ÑÑÐµÐ½Ð¸Ðµ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ñ, Ð²Ð¾Ð¿ÑÐ¾ÑÑ Ð°Ð¿Ð¿Ð°ÑÐ°ÑÑÑÐ½Ð¾Ð¹ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ ÐºÐ¾Ð´ÐµÑÐ¾Ð² Ð¸ Ð´ÐµÐºÐ¾Ð´ÐµÑÐ¾Ð² Ð¸ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð² Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ Ð´ÐµÐºÐ¾Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð½ÐµÑÐ¸ÐºÐ»Ð¸ÑÐµÑÐºÐ¸Ñ Ð¸ ÑÐ¸ÐºÐ»Ð¸ÑÐµÑÐºÐ¸Ñ ÐºÐ¾Ð´Ð¾Ð². ÐÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ð½ÐµÐºÐ¾ÑÐ¾ÑÑÐµ Ð½Ð¾Ð²ÑÐµ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ, Ð½Ð°Ð¿ÑÐ¸Ð¼ÐµÑ, ÑÐ°ÑÑÐ¸ÑÐµÐ½Ð½ÑÐµ ÑÐ°Ð±Ð»Ð¸ÑÑ Ð»Ð¸Ð½ÐµÐ¹Ð½ÑÑ ÐºÐ¾Ð´Ð¾Ð², Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ Ð´ÐµÐºÐ¾Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ. Ð¿Ð¾Ð»Ð½Ð°Ñ ÑÐ°Ð±Ð»Ð¸ÑÐ° ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²Ð¸Ñ (ÑÐ°Ð±Ð»Ð¸ÑÐ° Ð¾ÑÐ¸Ð±Ð¾Ðº) Ð¸ Ð´Ñ. Ð Ð¿Ð¾ÑÐ¾Ð±Ð¸Ð¸ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ð¾ Ð±Ð¾Ð»ÑÑÐ¾Ðµ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²Ð¾ Ð¿ÑÐ¸Ð¼ÐµÑÐ¾Ð². ÐÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð¾ Ð´Ð»Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² ÑÑÐµÑÑÐµÐ³Ð¾ ÐºÑÑÑÐ° ÑÐ°ÐºÑÐ»ÑÑÐµÑÐ° ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ð¹ ÐºÐ¸Ð±ÐµÑÐ½ÐµÑÐ¸ÐºÐ¸. ÐÐ¾Ð¶ÐµÑ Ð±ÑÑÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¾ ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ°Ð¼Ð¸, Ð·Ð°Ð½Ð¸Ð¼Ð°ÑÑÐ¸Ð¼Ð¸ÑÑ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÐ¸ÑÑÐµÐ¼ Ð¿ÐµÑÐµÐ´Ð°ÑÐ¸ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸, ÑÐ¸ÑÑÐµÐ¼ ÑÐµÑÑÐ¾Ð²Ð¾Ð¹ Ð¸ ÑÑÐ½ÐºÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð¹ Ð´Ð¸Ð°Ð³Ð½Ð¾ÑÑÐ¸ÐºÐ¸ Ð¸ ÑÐ¸ÑÑÐµÐ¼ Ð·Ð°ÑÐ¸ÑÑ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸ Ð² Ð²ÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½ÑÑ ÑÐµÑÑÑ Ð¸ ÑÐ¸ÑÑÐµÐ¼Ð°Ñ.
description: ÐÐµÑÐ°ÑÐ°ÐµÑÑÑ Ð¿Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ ÑÐµÐ´Ð°ÐºÑÐ¸Ð¾Ð½Ð½Ð¾-Ð¸Ð·Ð´Ð°ÑÐµÐ»ÑÑÐºÐ¾Ð³Ð¾ ÑÐ¾Ð²ÐµÑÐ° Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¾Ð³Ð¾ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑÐ°.
Spectral Characteristics of Planar Channeling Radiation by 20-800 MeV Electrons in a Thin Silicon Carbide
Creators: name: B. Azadegan
name: S.B. Dabagov
Publisher: name: INFN Open Access Repository
Year: 2010

description: Spectral distributions of channeling radiation by 20800 MeV electrons in different planes of a thin 4H polytype silicon carbide crystal is presented. We demonstrated that channeling in 4H SiC with hexagonal structure has some new features not available in other structures. Using Doyle-Turner approximation to the atomic scattering factor and taking in to account thermal vibrations of atoms, the continuum potentials for different planes of 4H polytype SiC single crystal were calculated. In the frame of quantum mechanic, the theory of channeling radiation has been applied to calculate the transverse electron states in the continuum potential of the planes and to study transition energies, linewidths, depth dependence for population of quantum states and spectral radiation distributions. At electron energies higher than 100 MeV the spectral distributions of radiation are calculated by classical calculations and successfully compared with quantum mechanics solutions. Specific properties of planar channeling radiation in 4H polytype SiC are discussed.
Bragg reflecting zones from x-ray diffractors with different surface profiles
Creators: name: A. Marcelli
name: A.V. Soldatov
name: M.I. Mazuritsky
name: V.L. Lyashenko
name: E.M. Latush
Publisher: name: INFN Open Access Repository
Year: 1999

description: The knowledge of the area and the shape of the crystal surface that reflects x-rays within a fixed range of angles and at a desired spectral resolution is determinant to evaluate the performances of a x-ray diffractor. In the present study a new mathematical approach that allows the calculation of the Bragg reflection zones has been developed and applied to spherical, toroidal and ellipsoidal diffractors. The reflecting areas of ellipsoidal and toroidal diffractors have been calculated as a function of the surface curvature parameters. Maps of the diffraction areas for different Bragg angles and bandwidths will be presented for each diffractors. The limitations of the existing methods, based on the Tailor series expansion, for the theoretical analysis of Bragg reflection zones are also discussed.
Template nanowires for spintronics applications: nanomagnet microwave resonators functioning in zero applied magnetic field
Creators: name: Mourachkine, A.
name: Yazyev, O. V.
name: Ducati, C.
name: Ansermet, J. -Ph.
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: Low-cost spintronic devices functioning in zero applied magnetic field are required for bringing the idea of spin-based electronics into the real-world industrial applications. Here we present first microwave measurements performed on nanomagnet devices fabricated by electrodeposition inside porous membranes. In the paper, we discuss in details a microwave resonator consisting of three nanomagnets, which functions in zero external magnetic field. By applying a microwave signal at a particular frequency, the magnetization of the middle nanomagnet experiences the ferromagnetic resonance (FMR), and the device outputs a measurable direct current (spin-torque diode effect). Alternatively, the nanodevice can be used as a microwave oscillator functioning in zero field. In order to test the resonators at microwave frequencies, we developed a simple measurement set-up.
description: 21 pages (main text - 13 pages + Supporting Information)
EVFEMIYA HODISASINING TASNIFIGA TURLICHA YONDASHUVLAR
Creators: name: Xaydarova, Shoira
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada evfemizmlarning turli olimlar tomonidan turlicha tasniflanishi masalalari yoritilgan. Evfemiya hodisasi bilan shug‘ullangan tilshunos olimlarning har biri uning turli belgilariga asoslangan tasniflarini ham u yoki bu darajada amalga oshirishga harakat qilishgan. Hodisa boshqa lisoniy birliklardek serqirra bo‘lgani kabi, bu tasniflarda evfemizmlarning turli qirralariga e’tibor qaratilgan bo‘lib, qo‘lga kiritilgan natijalar ham turlicha leksik-semantik guruhlari atroflicha o’rganilib tadqiq etiladi
N=(4,4), 2D Supergravity in SU(2) x SU(2) Harmonic Superspace
Creators: name: S. Bellucci
name: E. Ivanov
Publisher: name: INFN Open Access Repository
Year: 2000

description: We work out the basics of conformal N=(4,4), 2D supergravity in the N=(4,4), 2D analytic harmonic superspace with two independent sets of harmonic variables. We define the relevant most general analytic superspace diffeomorphism group and show that in the flat limit it goes over into the 'large'' N=(4,4), 2D superconformal group. The basic objects of the supergravity considered are analytic vielbeins covariantizing two analyticity-preserving harmonic derivatives. For self-consistency they should be constrained in a certain way. We solve the constraints and show that the remaining irreducible field content in a WZ gauge amounts to a new short N=(4,4) Weyl supermultiplet. As in the previously known cases, it involves no auxiliary fields and the number of remaining components in it coincides with the number of residual gauge invariances. We discuss various truncations of this 'master'' conformal supergravity group and its compensations via couplings to N=(4,4) superconformal matter multiplets. Besides recovering the standard minimal off-shell N=(4,4) conformal and Poincar� supergravity multiplets, we find, at the linearized level, several new off-shell gauge representations.
Corruption and governance in the South Pacific
Creators: name: Larmour, Peter
Publisher: name: Canberra, ACT: State, Society and Governance in Melanesia (SSGM) Program, The Australian National University
Year: 1997
Subjects: corruption
South Pacific
tradition
kinship
nationality
landownership
privatisation
aid
sovereignty
governance,

description: Suspicion of corruption has contributed to the crisis the PNG government currently faces over the use of mercenaries on Bougainville (Regan 1997), with the Governor General reported as referring to the ‘termites of corruption’ (Australian Broadcasting Corporation, 24 March 1997). Meanwhile the World Bank has announced a ‘renewed approach’ to preventing corruption, including a revision of its own global lending policies (The Independent February 14 1997). Corruption is hard to pin down, in principle and in practice. Transparency International, the anti-corruption non-government organization (NGO), distinguishes between ‘grand’ corruption, or the use of public office for private gain, and ‘petty’ corruption, in which officials demand facilitation payments to carry out perfectly legal tasks, like clearing a container from a wharf, which they are supposed to perform in any case (Pope 1996). The examples used in this paper refer mainly to grand corruption, which is often linked to election campaigning. There certainly seems to be more talk and moralising about corruption in the region. Politicians are widely suspected of it. The word itself (in English) carries connotations of decline, decay and falling away from the high ideals of the past. It has religious overtones in the strongly Christian countries of the region. In this paper, I try to understand it in relationship to some other issues in South Pacific politics: tradition, identity, landownership, privatisation, aid, and sovereignty. These are issues in a wider study of governance in the South Pacific.
Total  Cross-Sections
Creators: name: R.M. Godbole
name: A. Grau
name: G. Pancheri
name: Y.N. Srivastava
Publisher: name: INFN Open Access Repository
Year: 2001

description: A unified approach to total cross-sections, based on the QCD contribution to the rise with energy, is presented for the processes $pp$, $p{\bar p}$, $\gamma p, \gamma \gamma, e^+e^- \rightarrow hadrons$. For proton processes, a discussion of the role played by soft gluon summation in   taming the fast rise due to mini-jets is presented. For photon-photon processes, a comparison with other models indicates the need for precision measurements in both the low and high energy region, likely only with measurements  at future Linear Colliders.