cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Topology optimization on complex surfaces based on the moving morphable component (MMC) method and computational conformal mapping (CCM)
Creators: name: Huo, Wendong
name: Liu, Chang
name: Du, Zongliang
name: Jiang, Xudong
name: Liu, Zhengyu
name: Guo, Xu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In the present paper, an integrated paradigm for topology optimization on complex surfaces with arbitrary genus is proposed. The approach is constructed based on the two-dimensional (2D) Moving Morphable Component (MMC) framework, where a set of structural components are used as the basic units of optimization, and computational conformal mapping (CCM) technique, with which a complex surface represented by an unstructured triangular mesh can be mapped into a set of regular 2D parameter domains numerically. A multi-patch stitching scheme is also developed to achieve an MMC-friendly global parameterization through a number of local parameterizations. Numerical examples including a saddle-shaped shell, a torus-shape shell and a tee-branch pipe are solved to demonstrate the validity and efficiency of the proposed approach. It is found that compared with traditional approaches for topology optimization on 2D surfaces, optimized designs with clear load transmission paths can be obtained with much fewer numbers of design variables and degrees of freedom for finite element analysis (FEA) via the proposed approach.
Instantons on Gravitons
Creators: name: Cherkis, Sergey A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: Differential Geometry (math.DG)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Yang-Mills instantons on ALE gravitational instantons were constructed by Kronheimer and Nakajima in terms of matrices satisfying algebraic equations. These were conveniently organized into a quiver. We construct generic Yang-Mills instantons on ALF gravitational instantons. Our data are formulated in terms of matrix-valued functions of a single variable, that are in turn organized into a bow. We introduce the general notion of a bow, its representation, its associated data and moduli space of solutions. For a judiciously chosen bow the Nahm transform maps any bow solution to an instanton on an ALF space. We demonstrate that this map respects all complex structures on the moduli spaces, so it is likely to be an isometry, and use this fact to study the asymptotics of the moduli spaces of instantons on ALF spaces.
description: 42 pages, 8 figures
Measurement accuracy in cone beam computed tomography in the presence of metal artifact
Creators: name: Ismail, Ahmed
Publisher: name: University of British Columbia
Year: 2020

description: Purpose: Cone beam computed tomography (CBCT) image quality is known to be affected by artifacts produced by metal restorations, causing image deterioration via bright streaks and loss of gray values in the vicinity of the metallic structure. The aim of the study is to determine the impact of progressively increasing metal artifacts on the measurement accuracy of commonly evaluated points in implant treatment planning. Methods: Holes were drilled into porcine mandibles at known distances from the alveolar crest on the buccal and lingual surfaces and filled with gutta percha. Repeated CBCT images were taken, with progressively increasing amalgam restorations and stainless-steel crowns (up to a total of 8 restorations per jaw). The imaging field of view (FOV) was of a single site (5x5cm) in 2 different locations in the mandible, as well as a full arch FOV (10x5cm). Measurement between the buccal and lingual gutta percha points on the mandible was performed using a digital caliper to establish the difference between caliper measurements compared to the same measurements taken digitally on the CBCT images. Measurements were compared under conditions with no restorations and with increasing numbers of restorations. Results: Comparison between caliper measurements and baseline CBCT with no metal artifact demonstrated differences ranging from 0-1.7 mm. This range of variation appears to be consistent even with increasing metal artifact, with no clear detectable pattern of change. When compared to baseline measurements, scans with amalgam and stainless-steel restorations showed a maximum difference of 0.54 ± 0.64 mm and 0.62 ± 0.64 mm respectively. The change in measurements was not found to be significantly different with increasing metal restorations. Conclusions: There may be a variation of up to 1.7 mm between measured anatomical points and CBCT imaging under commonly used settings. While this result may be clinically important, it does not appear to be affected by increasing metal artifact due to amalgam restorations or stainless-steel crowns. The findings of this study support current clinical practices accounting for a safety margin of up to 2 mm with any CBCT image, and not limiting CBCT scans for patients with multiple metal restorations.
H$_2$-dominated Atmosphere as an Indicator of Second-generation Rocky White Dwarf Exoplanets
Creators: name: Lin, Zifan
name: Seager, Sara
name: Ranjan, Sukrit
name: Kozakis, Thea
name: Kaltenegger, Lisa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Following the discovery of the first exoplanet candidate transiting a white dwarf (WD), a "white dwarf opportunity" for characterizing the atmospheres of terrestrial exoplanets around WDs is emerging. Large planet-to-star size ratios and hence large transit depths make transiting WD exoplanets favorable targets for transmission spectroscopy - conclusive detection of spectral features on an Earth-like planet transiting a close-by WD can be achieved within a medium James Webb Space Telescope (JWST) program. Despite the apparently promising opportunity, however, the post-main sequence (MS) evolutionary history of a first-generation WD exoplanet has never been incorporated in atmospheric modeling. Furthermore, second-generation planets formed in WD debris disks have never been studied from a photochemical perspective. We demonstrate that transmission spectroscopy can identify a second-generation rocky WD exoplanet with a thick ($\sim1$ bar) H$_2$-dominated atmosphere. In addition, we can infer outgassing activities of a WD exoplanet based on its transmission spectra and test photochemical runaway by studying CH$_4$ buildup.
description: 25 pages, 10 figures, 3 tables, accepted for publication in ApJ Letters
title: ÐÐ¼Ð¸Ð´Ð¶ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ Ð² Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ð¸ ÑÑÐ»ÑÐ³ event-Ð¸Ð½Ð´ÑÑÑÑÐ¸Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: The company's image in the promotion of event-industry services
Creators: name: ÐÐ¸ÑÑÐµÐ½ÐºÐ¾, ÐÐ»ÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: Ð¸Ð¼Ð¸Ð´Ð¶ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸
ÑÐ¸Ð¿Ñ Ð¸Ð¼Ð¸Ð´Ð¶Ð°
Ð°ÑÐ´Ð¸ÑÐ¾ÑÐ¸Ñ
ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½ÑÐµ ÑÐµÑÐ¸
smm
Ð¸Ð½ÑÑÐ°Ð³ÑÐ°Ð¼
event-Ð°Ð³ÐµÐ½ÑÑÐ²Ð°
organization image
image types
audience
social networks
instagram
event-agencies

description: Ð ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÐºÑÑÑÐ° ÑÑÑÑ Ð¸ ÑÐ¾Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ðµ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸Ð¼Ð¸Ð´Ð¶Ð° Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸, Ð² ÑÐ¾Ð¼ ÑÐ¸ÑÐ»Ð¸ Ð¸ Ð² ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½ÑÑ ÑÐµÑÑÑ. Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÑ SMM (Social Media Marketing), ÐºÐ°Ðº ÑÑÐµÐ´ÑÑÐ²Ð° ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ Ð¿Ð¾Ð´Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ñ Ð¸Ð¼Ð¸Ð´Ð¶Ð° ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¹. Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð° ÑÑÐµÑÐ° event-Ð¸Ð½Ð´ÑÑÑÑÐ¸Ð¸. ÐÐ°Ð½Ð° Ð¾Ð±ÑÐ°Ñ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ° Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÐÐ ÐÑÐ±Ð¸Ð½ ÐÐ¼Ð¸ÑÑÐ¸Ð¹ ÐÐ¸ÐºÑÐ¾ÑÐ¾Ð²Ð¸Ñ Â«Bubin EventsÂ», Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸, ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ½Ð¾Ð¹ ÑÑÐµÐ´Ñ Ð¸ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð² ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½ÑÑ ÑÐµÑÑÑ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð° Ð¾ÑÐµÐ½ÐºÐ° PR-Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸. ÐÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½ÑÐ¹ Ð°Ð²ÑÐ¾ÑÐ¾Ð¼ Ð¿ÑÐ¾ÐµÐºÑ Ð¿Ð¾ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ Ð¿Ð¾Ð´Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ñ Ð¸Ð¼Ð¸Ð´Ð¶Ð° Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð² ÑÐµÑÐ¸ Â«InstagramÂ».
description: The paper reveals the essence and content of the formation of the organization's image, including in social networks. The tools of SMM (Social Media Marketing), as a means of forming and maintaining the image of companies, are considered. The scope of the event industry is considered. The general characteristics of the organization of the sole proprietor Bubin Dmitry Viktorovich "Bubin Events" are given, the analysis of the company, the competitive environment and activity in social networks is carried out, and also the assessment of PR-activity of the organization is made. The author presents a project developed by the author on the formation and maintenance of the organization's image in the Instagram network.
Exclusive $D_{s} \to (η,η^{\prime}) l ν$ decays in light cone QCD
Creators: name: Azizi, K.
name: Khosravi, R.
name: Falahati, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Probing the $\bar ss$ content of the $η$ and $η'$ mesons and considering mixing between these states as well as gluonic contributions, the form factors responsible for semileptonic $D_s \to (η, η') l ν$ transitions are calculated via light cone QCD sum rules. Corresponding branching fractions and their ratio for different mixing angles are also obtained. Our results are in a good consistency with experimental data as well as predictions of other nonperturbative approaches.
description: 13 Pages, 2 Figure and 4 Tables
Tensor-based Basis Function Learning for Three-dimensional Sound Speed Fields
Creators: name: Cheng, Lei
name: Ji, Xingyu
name: Zhao, Hangfang
name: Li, Jianlong
name: Xu, Wen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Basis function learning is the stepping stone towards effective three-dimensional (3D) sound speed field (SSF) inversion for various acoustic signal processing tasks, including ocean acoustic tomography, underwater target localization/tracking, and underwater communications. Classical basis functions include the empirical orthogonal functions (EOFs), Fourier basis functions, and their combinations. The unsupervised machine learning method, e.g., the K-SVD algorithm, has recently tapped into the basis function design, showing better representation performance than the EOFs. However, existing methods do not consider basis function learning approaches that treat 3D SSF data as a third-order tensor, and thus cannot fully utilize the 3D interactions/correlations therein. To circumvent such a drawback, basis function learning is linked to tensor decomposition in this paper, which is the primary drive for recent multi-dimensional data mining. In particular, a tensor-based basis function learning framework is proposed, which can include the classical basis functions (using EOFs and/or Fourier basis functions) as its special cases. This provides a unified tensor perspective for understanding and representing 3D SSFs. Numerical results using the South China Sea 3D SSF data have demonstrated the excellent performance of the tensor-based basis functions.
title: Ð Ð°ÑÐ¿Ð¾Ð·Ð½Ð°Ð²Ð°Ð½Ð¸Ðµ ÑÑÐºÐ¾Ð¿Ð¸ÑÐ½ÑÑ Ð¾Ð±ÑÐµÐºÑÐ¾Ð² Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð½ÐµÐ¹ÑÐ¾Ð½Ð½Ð¾Ð¹ ÑÐµÑÐ¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Handwritten object recognition using a neural network
Creators: name: Ð¢ÑÑÐºÐ¸Ð½, Ð¡ÐµÑÐ³ÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: Ð½ÐµÐ¹ÑÐ¾Ð½Ð½ÑÐµ ÑÐµÑÐ¸
Ð¸ÑÐºÑÑÑÑÐ²ÐµÐ½Ð½ÑÐ¹ Ð¸Ð½ÑÐµÐ»Ð»ÐµÐºÑ
Ð¸Ð½ÑÐµÑÑÐµÐ¹Ñ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ
ÑÐ°ÑÐ¿Ð¾Ð·Ð½Ð°Ð²Ð°Ð½Ð¸Ðµ Ð¾Ð±ÑÐµÐºÑÐ¾Ð²
neural networks
artificial intelligence
application interface
object recognition

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ð¾ ÑÐµÑÐµÐ½Ð¸Ðµ ÑÐ°ÑÐ¿Ð¾Ð·Ð½Ð°Ð²Ð°Ð½Ð¸Ðµ ÑÑÐºÐ¾Ð¿Ð¸ÑÐ½ÑÑ Ð¾Ð±ÑÐµÐºÑÐ¾Ð² Ð½Ð° Ð¸Ð·Ð¾Ð±ÑÐ°Ð¶ÐµÐ½Ð¸Ð¸. ÐÐ°Ð½Ñ Ð¾Ð±ÑÐ¸Ðµ Ð¿Ð¾Ð½ÑÑÐ¸Ñ Ð¸ ÐºÐ»Ð°ÑÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ IT-ÑÐ¸ÑÑÐµÐ¼ ÑÐ°ÐºÐ¾Ð³Ð¾ ÐºÐ»Ð°ÑÑÐ°. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ¸ÑÑÐµÐ¼-Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿Ð¾Ð². ÐÐ·ÑÑÐµÐ½Ð° ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ñ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ ÑÐºÐ°Ð·Ð°Ð½Ð½Ð¾Ð³Ð¾ ÐºÐ»Ð°ÑÑÐ° Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° ÐºÐ¾Ð½ÐºÑÐµÑÐ½Ð°Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð°Ñ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ñ ÑÐ°ÑÐ¿Ð¾Ð·Ð½Ð°Ð²Ð°Ð½Ð¸Ñ ÑÑÐºÐ¾Ð¿Ð¸ÑÐ½ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ð½Ð° ÑÐºÐµÑÑÐµ.
description: This paper presents a solution for recognizing handwritten objects in an image. General concepts and classification of IT systems of this class are given. The analysis of prototype systems is carried out. The technology of creation of the specified class of information systems is studied. A specific software implementation for recognizing handwritten elements on a sketch has been developed.
You Cannot Press Out the Black Hole
Creators: name: Ida, Daisuke
name: Okamoto, Takahiro
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: It is shown that a ball-shaped black hole region homeomorphic with D**n cannot be pressed out, along whichever axis penetrating the black hole region, into a black ring with a doughnut-shaped black hole region homeomorphic with S**1 x D**(n-1). A more general prohibition law for the change of the topology of black holes, including a version of no-bifurcation theorems for black holes, is given.
description: 6 pages
Ni-Mn-Ga films in the austenite and the martensite structures at room temperature: Uniaxial texturation and epitaxial growth
Creators: name: Tillier, Jérémy
name: Einig, Antinéa
name: Bourgault, Daniel
name: Odier, Philippe
name: Ortega, Luc
name: Pairis, Sébastien
name: Porcar, Laureline
name: Chometon, Paul
name: Caillault, Nathalie
name: Carbone, Laurent
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ni-Mn-Ga films in the austenite and the martensite structures at room temperature have been obtained using the DC magnetron sputtering technique. Two elaboration processes were studied. A first batch of samples was deposited using a resist sacrificial layer in order to release the film from the substrate before vacuum annealing. This process leads to polycrystalline films with a strong (022) fiber texture. The martensitic phase transformation of such polycrystalline freestanding films has been studied by optical and scanning electron microscopy. A second batch of samples was grown epitaxially on (100)MgO substrates using different deposition temperatures. The texture has been analyzed with four-circle X-ray diffraction. Epitaxial films crystallized both in the austenite and the martensite structures at room temperature have been studied.
title: ÐÐ¾Ð´Ð±Ð¾Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÑ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² HIFU-Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð´Ð»Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÑÐ¸Ð¿Ð¾Ð² Ð±Ð¸Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐºÐ°Ð½ÐµÐ¹
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Selection of optimal HIFU exposure parameters for various types of biological tissues
Creators: name: ÐÐ¾ÑÐ¸ÑÐµÐ½ÐºÐ¾, ÐÐ»Ð¸Ð·Ð°Ð²ÐµÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÑÐ»ÑÑÑÐ°Ð·Ð²ÑÐº
ÑÐ¸Ð»Ð¾Ð²Ð¾Ð¹ Ð¸Ð·Ð»ÑÑÐ°ÑÐµÐ»Ñ
Ð¸Ð½ÑÐµÐ½ÑÐ¸Ð²Ð½Ð¾ÑÑÑ
ÑÐµÐ¿Ð»Ð¾Ð²Ð°Ñ Ð´Ð¾Ð·Ð°
ÑÐ»ÑÑÑÐ°Ð·Ð²ÑÐºÐ¾Ð²Ð°Ñ Ð°Ð±Ð»ÑÑÐ¸Ñ
Ð±Ð¸Ð¾-ÑÐ°Ð½ÑÐ¾Ð¼
ultrasound
power emitter
intensity
thermal dose
ultrasound ablation
bio-phantom

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÑ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² HIFU-Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð½Ð° Ð²ÑÑÐ¾ÐºÐ¾ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐ½Ð¾Ð¼ Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½Ð¾Ð¼ Ð¼ÐµÐ´Ð¸ÑÐ¸Ð½ÑÐºÐ¾Ð¼ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ðµ Ð´Ð»Ñ ÑÐ»ÑÑÑÐ°Ð·Ð²ÑÐºÐ¾Ð²Ð¾Ð¹ Ð´Ð¸Ð°Ð³Ð½Ð¾ÑÑÐ¸ÐºÐ¸ Ð¸ Ð¿ÐµÑÑÐ¾Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð¹ HIFU-ÑÐµÑÐ°Ð¿Ð¸Ð¸ Â«MedusaÂ âÂ 008Â». Ð¡ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð´Ð°Ð½Ð½ÑÑ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² Ð¼Ð¾Ð¶Ð½Ð¾ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ Ð¾ÑÑÑÐµÑÑÐ²Ð»ÑÑÑ ÑÐ»ÑÑÑÐ°Ð·Ð²ÑÐºÐ¾Ð²ÑÑ Ð°Ð±Ð»ÑÑÐ¸Ñ Ð¿Ð¾ÑÐ°Ð¶ÐµÐ½Ð½ÑÑ Ð±Ð¸Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐºÐ°Ð½ÐµÐ¹. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÐµ ÑÐµÐ¶Ð¸Ð¼Ñ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð½Ð° Ð±Ð¸Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¾Ð±ÑÐµÐºÑÑ, ÑÐ¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¾ ÑÐ°ÑÐ¿ÑÐ¾ÑÑÑÐ°Ð½ÐµÐ½Ð¸Ðµ ÑÐµÐ¿Ð»Ð° Ð´Ð»Ñ ÑÑÐ¸Ñ ÑÐµÐ¶Ð¸Ð¼Ð¾Ð², Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÑ Ð´Ð°Ð½Ð½ÑÑ. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ñ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸ Ð¿Ð¾ Ð²ÑÐ±Ð¾ÑÑ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÑ ÑÐµÐ¶Ð¸Ð¼Ð¾Ð² Ð´Ð»Ñ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ.
description: The given work is devoted to determining the optimal parameters of HIFU exposure on a high-tech medical device for ultrasound diagnostics and personalized HIFU-therapy âMedusa 008â. Ultrasound ablation on the affected biological tissues can be effectively performed using these parameters. Various modes of exposure to biological objects have been studied, heat propagation has been modeled for these modes, and the experimental data obtained have been analyzed. Recommendations on the choice of optimal modes for exposure have been developed.
Model Selection Principles in Misspecified Models
Creators: name: Lv, Jinchi
name: Liu, Jun S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 62J12(Primary), 62B10, 62F07, 62F15, 62J07(Secondary)

description: Model selection is of fundamental importance to high dimensional modeling featured in many contemporary applications. Classical principles of model selection include the Kullback-Leibler divergence principle and the Bayesian principle, which lead to the Akaike information criterion and Bayesian information criterion when models are correctly specified. Yet model misspecification is unavoidable when we have no knowledge of the true model or when we have the correct family of distributions but miss some true predictor. In this paper, we propose a family of semi-Bayesian principles for model selection in misspecified models, which combine the strengths of the two well-known principles. We derive asymptotic expansions of the semi-Bayesian principles in misspecified generalized linear models, which give the new semi-Bayesian information criteria (SIC). A specific form of SIC admits a natural decomposition into the negative maximum quasi-log-likelihood, a penalty on model dimensionality, and a penalty on model misspecification directly. Numerical studies demonstrate the advantage of the newly proposed SIC methodology for model selection in both correctly specified and misspecified models.
description: 25 pages, 6 tables
Improving Strategies via SMT Solving
Creators: name: Gawlitza, Thomas Martin
name: Monniaux, David
Publisher: name: arXiv
Year: 2011
Subjects: subject: Programming Languages (cs.PL)
subject: Computational Complexity (cs.CC)
subject: Logic in Computer Science (cs.LO)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We consider the problem of computing numerical invariants of programs by abstract interpretation. Our method eschews two traditional sources of imprecision: (i) the use of widening operators for enforcing convergence within a finite number of iterations (ii) the use of merge operations (often, convex hulls) at the merge points of the control flow graph. It instead computes the least inductive invariant expressible in the domain at a restricted set of program points, and analyzes the rest of the code en bloc. We emphasize that we compute this inductive invariant precisely. For that we extend the strategy improvement algorithm of [Gawlitza and Seidl, 2007]. If we applied their method directly, we would have to solve an exponentially sized system of abstract semantic equations, resulting in memory exhaustion. Instead, we keep the system implicit and discover strategy improvements using SAT modulo real linear arithmetic (SMT). For evaluating strategies we use linear programming. Our algorithm has low polynomial space complexity and performs for contrived examples in the worst case exponentially many strategy improvement steps; this is unsurprising, since we show that the associated abstract reachability problem is Pi-p-2-complete.
Jahresbericht des Vereins schweizerischer Gymnasiallehrer
Creators: name: (:Unkn) Unknown
Publisher: name: Zentralbibliothek Zürich
Year: 1909
Subjects: subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Angerer, Gottfried

description: Separatabdruck aus dem Jahresheft des Vereins schweizerischer Gymnasiallehrer, pro 1909.
description: Nekrolog für Gottfried Angerer ab S. 19.
Fokker-Planck type equations with Sobolev diffusion coefficients and BV drift coefficients
Creators: name: Luo, Dejun
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q84, 60H10

description: In this paper we give an affirmative answer to an open question mentioned in [Le Bris and Lions, Comm. Partial Differential Equations 33 (2008), 1272--1317], that is, we prove the well-posedness of the Fokker-Planck type equations with Sobolev diffusion coefficients and BV drift coefficients.
description: 11 pages. The proof has been modified
Listening comprehension: audio-only vs. audio-visual approaches
Creators: name: Peltier-Nardotto, Ilaria
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2018

description: This paper sets up an investigation of the audio-only (AO) and audio-visual (AV) listening comprehension approaches in a Scuola Media Superiore (SMS) in Ticino as a mean to build and expand listening comprehension skills. The working hypothesis of this study is that AO listening comprehension will lead to better results both in terms of accuracy in answering comprehension questions and completing fill-in-the-blanks sentences, and in terms of enjoyment of the activity. Though the study is not carried out, and no data is available, a thorough discussion of the literature concerning cognitive theory is examined in order to gain a better understanding of the conflicting results presented in similar studies due to the array of definitions and theoretical frameworks employed by the researchers as well as other variables. Furthermore, expected findings and results are listed. It is clear that teacher discretion and preparation is key to the didactic applications of AO and AV listening comprehension exercises. More research is needed to better define and refine key characteristics to take into consideration in this area of language teaching and learning, especially as technology advances and more authentic material is available for use in the language classroom. Relatore: Paolo Jacomelli. Materia: inglese.
Screen time, sleep and social relationships : a population-level study examining emotional wellbeing during early adolescence
Creators: name: Cooray, Muthuthantrige Savithri
Publisher: name: University of British Columbia
Year: 2020

description: BACKGROUND: This study explored the role of early adolescents’ relationships with peers and adults, recreational screen time, and quality of sleep in relation to optimism, satisfaction with life, depressive symptoms and anxiety. Understanding the ways in which social experiences and health behaviors are associated with the emotional wellbeing of early adolescents is important because it can help pave the way for interventions and programs that support thriving. METHOD: The present study draws from data collected with the Middle Years Development Instrument (MDI), a population-level self-report survey implemented annually in British Colombia. Survey data from grade 7 students (N = 28,172; 49.1% female), collected between 2014-2018, were examined. Hierarchical regression analyses were used to investigate whether social relationships (with peers, adults in school and adults at home) and health behaviors (screen time, sleep) were associated with indicators of positive and negative emotional wellbeing, controlling for gender and English language background. RESULTS: Main findings were that lower levels of peer belonging and adult support at home and at school, higher levels of screen time, and poorer sleep quality were associated with high levels of depressive symptoms and anxiety, and lower levels of optimism and satisfaction with life. There was a significant interaction between screen time and gender in relation to the emotional wellbeing outcomes. Specifically, the association between more screen time and poorer emotional wellbeing outcomes was significantly larger for girls than for boys. CONCLUSION: The present study indicates that high levels of peer belonging, adult support, sleep quality and low levels of screen time are important for the emotional wellbeing of emerging adolescents. These findings highlight the various behavioral and social factors that can be actively nurtured to promote emotional wellbeing during the early adolescent years .
Microwave-free dynamic nuclear polarization via sudden thermal jumps
Creators: name: Meriles, Carlos A.
name: Zangara, Pablo R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Dynamic Nuclear Polarization (DNP) presently stands as the preferred strategy to enhance the sensitivity of nuclear magnetic resonance measurements, but its application relies on the use of high-frequency microwave to manipulate electron spins, an increasingly demanding task as the applied magnetic field grows. Here we investigate the dynamics of a system hosting a polarizing agent formed by two distinct paramagnetic centers near a level anti-crossing. We theoretically show that nuclear spins polarize efficiently under a cyclic protocol that combines alternating thermal jumps and radio-frequency pulses connecting hybrid states with opposite nuclear and electronic spin alignment. Central to this process is the difference between the spin-lattice relaxation times of either electron spin species, transiently driving the electronic spin bath out of equilibrium after each thermal jump. Without the need for microwave excitation, this route to enhanced nuclear polarization may prove convenient, particularly if the polarizing agent is designed to feature electronic level anti-crossings at high magnetic fields.
title: ÐÐ¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ Ð¿Ð¾Ð¸ÑÐºÐ° Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð³Ð»ÑÐ±Ð¾ÐºÐ¾Ð¿Ð¾Ð´Ð¿Ð¾ÑÐ¾Ð³Ð¾Ð²Ð¾Ð³Ð¾ ÑÐ°ÑÐ¼Ð¾Ð½Ð¸Ñ Ð² ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐµ FITNEX (ÐÐÐ¯Ð, ÐÑÐ±Ð½Ð°)
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Possibilities of searching of the deep subthreshold production of charmonium in the FITNEX experiment (JINR,Dubna)
Creators: name: Ð®ÑÑÐµÐ½ÐºÐ¾, Ð¡ÐµÐ¼ÐµÐ½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: GEANT4
FLUKA
FITNEX
Ð³Ð»ÑÐ±Ð¾ÐºÐ¾Ð¿Ð¾Ð´Ð¿Ð¾ÑÐ¾Ð³Ð¾Ð²Ð¾Ðµ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ðµ
ÑÐ°ÑÐ¼Ð¾Ð½Ð¸Ð¹
charmonium
deep subthreshold production

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð² Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ°ÑÐ¼Ð¾Ð½Ð¸Ñ Ð² ÑÐ´ÑÐ¾-ÑÐ´ÐµÑÐ½Ð½ÑÑ ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸Ñ Ð² beam-dump ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐµ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¾Ð½Ð¾Ð²ÑÑ ÑÐ¾Ð±ÑÑÐ¸Ð¹ Ð´Ð»Ñ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÑ Ð³ÐµÐ¾Ð¼ÐµÑÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°.
description: The given work is devoted to simulating processes in heavy ion collisions in the beam-dump experiment. Also simulation of background events in order to choose optimal geometrical parameters of the experiment.
Equidistribution of bounded torsion CM points
Creators: name: Hough, Bob
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Averaging over imaginary quadratic fields, we prove, quantitatively, the equidistribution of CM points associated to 3-torsion classes in the class group. We conjecture that this equidistribution holds for points associated to ideals of any fixed odd order. We prove a partial equidistribution result in this direction and present empirical evidence.
Greybody factor and perturbation of a Schwarzschild black hole with string clouds and quintessence
Creators: name: Al-Badawi, Ahmad
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we investigated the Dirac and Klein-Gordan equations, as well as the greybody factor for a Schwarzschild black hole (SBH) immersed in quintessence and associated with a cloud of strings. Primarily, we study the Dirac equation using a null tetrad in the Newman- Penrose (NP) formalism. Next, we separate the Dirac equation into radial and angular sets. Using the radial equations, we study the profile of effective potential by transforming the radial equation of motion into standard Schr% ödinger wave equations form through tortoise coordinate. Similarly, we study the Klein-Gordan equation in this spacetime. The Miller-Good transformation method is employed to compute the greybody factor of bosons. To compute the Gerybody factor for fermions, we use the general method of semi-analytical bounds. We also investigate the effect of string clouds and quintessence parameters on Hawking radiation. According to the results, the greybody factor is strongly influenced by the shape of the potential, which is determined by the model parameters. This is consistent with the ideas of quantum mechanics; as the potential rises, it becomes harder for the wave to penetrate.
description: 14 pages, 6 figures
Art and Design in the Age of Innovation:  A Creative Alliance between Graffiti and Contemporary Aesthetics
Creators: name: Science Step Journal
Publisher: name: Science Step Journal
Year: 2025
Subjects: fine arts

description: The objective of this study is to analyze the convergence between Street art and fashion, exploring how these fields interact and reinforce each other. It examines the impact on brand strategies, consumer perception, and product value, highlighting the central role of the artist. The research aims to understand how urban art, linked to counter-culture, integrates into haute couture. To achieve this, the methodology relies on a qualitative analysis of trends in the fashion industry, focusing on collaborations between street artists and fashion houses. The integration of Street art into collections has been analyzed, and statements from designers and artists have helped decipher this synergy. This approach explores the motivations, creative processes, and impacts of these collaborations. The results reveal that Street art inspires designers, who incorporate its visual elements and spirit into their creations. This collaboration transforms clothing into wearable works of art, increasing their value. The street artist, now central, brings a cultural and emotional dimension, attracting an audience passionate about urban culture. This fusion creates synergy, producing high-end items at elevated prices and strengthening brand image. By synthesizing these results, it becomes clear that: This study underscores the importance of collaboration between Street art and fashion, redefining the boundaries between art and commerce. It shows how this alliance adds value and makes the street artist a key figure for luxury brands.
Quantum Geometry II : The Mathematics of Loop Quantum Gravity Three dimensional quantum gravity
Creators: name: García-Islas, J. Manuel
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Loop quantum gravity is a physical theory which aims at unifying general relativity and quantum mechanics. It takes general relativity very seriously and modifies it via a quantisation. General relativity describes gravity in terms of geometry. Therefore, quantising such theory must be equivalent to quantising geometry and that is what loop quantum gravity does. This sounds like a mathematical task as well. This is why in this paper we will present the mathematics of loop quantum gravity. We will do it from a mathematician point of view. This paper is intended to be an introduction to loop quantum gravity for postgraduate students of physics and mathematics. In this work we will restrict ourselves to the three dimensional case.
description: 15 Pages
Bayesian Sequential Detection with Phase-Distributed Change Time and Nonlinear Penalty -- A POMDP Approach
Creators: name: Krishnamurthy, Vikram
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Theory (cs.IT)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: We show that the optimal decision policy for several types of Bayesian sequential detection problems has a threshold switching curve structure on the space of posterior distributions. This is established by using lattice programming and stochastic orders in a partially observed Markov decision process (POMDP) framework. A stochastic gradient algorithm is presented to estimate the optimal linear approximation to this threshold curve. We illustrate these results by first considering quickest time detection with phase-type distributed change time and a variance stopping penalty. Then it is proved that the threshold switching curve also arises in several other Bayesian decision problems such as quickest transient detection, exponential delay (risk-sensitive) penalties, stopping time problems in social learning, and multi-agent scheduling in a changing world. Using Blackwell dominance, it is shown that for dynamic decision making problems, the optimal decision policy is lower bounded by a myopic policy. Finally, it is shown how the achievable cost of the optimal decision policy varies with change time distribution by imposing a partial order on transition matrices.
description: accepted for publication in IEEE Transactions Information Theory, 2011
Fraction of broad absorption line quasars in different radio morphologies
Creators: name: Nair, Akhil
name: Vivek, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this study, we investigated the orientation model of Broad Absorption Line (BAL) quasars using a sample of sources that are common in Sloan Digital Sky Survey (SDSS) Data Release (DR)-16 quasar catalog and Very Large Array (VLA)-Faint Images of the Radio Sky at Twenty Centimeters (FIRST) survey. Using the radio cut-out images from the FIRST survey, we first designed a deep learning model using convolutional neural networks (CNN) to classify the quasar radio morphologies into the core-only, young jet, single lobe, or triples. These radio morphologies are further sub-classified into core-dominated and lobe-dominated sources. The CNN models can classify the sources with a high precision of >98% for all the morphological sub-classes. The average BAL fraction in the resolved core, core-dominated, and lobe-dominated quasars are consistent with the BAL fraction inferred from radio and infra-red surveys. We also present the distribution of BAL quasars as a function of quasar orientation by using the radio core-dominance as an orientation indicator. A similar analysis is performed for HiBALs, LoBALs, and FeLoBALs. All the radio morphological sub-classes and BAL sub-classes show an increase in BAL fraction at high orientation angles of the jets with respect to the line of sight. Our analysis suggests that BAL quasars are more likely to be found in viewing angles close to the equatorial plane of the quasar. However, a pure orientation model is inadequate, and a combination of orientation and evolution is probably the best way to explain the complete BAL phenomena.
description: 18 pages, 14 figues, 4 tables, Accepted for publication in MNRAS
An M-theory solution from null roots in E11
Creators: name: Houart, Laurent
name: Kleinschmidt, Axel
name: Hörnlund, Josef Lindman
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We find a purely gravitational classical solution of M-theory/eleven-dimensional supergravity which corresponds to a solution of the E10 brane sigma-model involving a null root. This solution is not supersymmetric and is regularly embedded into E11.
description: 10 pages
Meravigliosa Mente
Creators: name: Lafranchi, Emily
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2021
Subjects: filosofia con i bambini – ascolto – discussione – riflessione – pensiero critico

description: Quest'ultimo anno ci sta mettendo a dura prova; mai come oggi abbiamo la conferma di quanto possa essere difficoltoso fermarsi. La frenesia della società in cui viviamo purtroppo tende a ripercuotersi anche nella scuola, dove il tempo per dialogare e interrogarsi diventa rarefatto. Questa ricerca, sperimentata in una classe di seconda elementare, si pone l’obiettivo di intraprendere, spinti dalla meraviglia, le affascinanti vie del dialogo filosofico allo scopo di sviluppare menti consapevoli, critiche e libere. Partendo da domande filosofiche, viene stimolato il pensiero, il confronto e l’ascolto. L’insegnante, o facilitatore, posizionadosi al livello dei bambini, coordina la discussione ma mai intende manipolarla o influenzarla: considera i bambini cittadini liberi e rispettabili. Gli strumenti utilizzati per raccogliere i dati sono di carattere qualitativo; le discussioni vengono registrate e trascritte al fine di analizzare e valorizzare il pensiero di ogni bambino. I dati raccolti dimostrano come praticare la filosofia in classe possa contribuire allo sviluppo dell’ascolto, dell’argomentazione, della riflessione e di un approccio dubitativo nei confronti della realtà che sta dentro e fuori di noi. Relatrice: Marina Bernasconi.
Stochastic approach to gravitational waves from inflation
Creators: name: Tasinato, Gianmassimo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose a coarse-graining procedure for describing the superhorizon dynamics of inflationary tensor modes. Our aim is to formulate a stochastic description for the statistics of spin-2 modes which seed the background of gravitational waves from inflation. Using basic principles of quantum mechanics, we determine a probability density for coarse-grained tensor fields, which satisfies a stochastic Fokker-Planck equation at superhorizon scales. The corresponding noise and drift are computable, and depend on the cosmological system under consideration. Our general formulas are applied to a variety of cosmological scenarios, also considering cases seldom considered in the context of stochastic inflation, and which are important for their observational consequences. We start obtaining the expected expressions for noise and drift in pure de Sitter and power-law inflation, also including a discussion of effects of non-attractor phases. We then apply our methods to describe scenarios with a transition from inflation to standard cosmological eras of radiation and matter domination. We show how the interference between modes flowing through the cosmological horizon, and modes spontaneously produced at superhorizon scales, can affect the stochastic evolution of coarse-grained tensor quantities. In appropriate limits, we find that the corresponding spectrum of tensor modes at horizon crossing matches with the results of quantum field theory calculations, but we also highlight where differences can arise.
description: 27 pages, 2 figures
Cross section for double charmonium production in electron-positron annihilation at energy $\sqrt{s}$= 10.6 GeV
Creators: name: Mengesha, Elias
name: Bhatnagar, Shashank
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we study the process $e^{+}+e^{-}\longrightarrow J/Ψ+η_{c} $ at energy $\sqrt{s}= 10.6 GeV$ observed recently at B-factories whose measurements were made by Babar and Belle groups. We calculate the cross section for this process in the Bethe-salpeter formalism under Covariant Instantaneous Anstaz (CIA). To simplify our calculation, the heavy quark approximation $(q<
description: 14 pages, 2 figures. arXiv admin note: substantial text overlap with arXiv:0912.3081
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐ° Ð²Ð°ÑÐ¸Ð°Ð½ÑÐ¾Ð² Ð¾ÑÐ²ÐµÑÐ¾Ð² Ð½Ð° ÑÐµÑÑÐ¾Ð²ÑÐµ Ð²Ð¾Ð¿ÑÐ¾ÑÑ Ð´Ð»Ñ ÑÐ¸ÑÑÐµÐ¼Ñ ÐºÐ¾Ð½ÑÑÐ¾Ð»Ñ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð·Ð½Ð°Ð½Ð¸Ð¹
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development of a software generator of answers to test questions for the practical knowledge control system
Creators: name: ÐÐ¾Ð½Ð¸Ð½Ð°, ÐÐ°ÑÐ¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸Ð·Ð°ÑÐ¸Ñ
Ð²Ð°ÑÐ¸Ð°Ð½Ñ Ð¾ÑÐ²ÐµÑÐ°
Ð´Ð¸ÑÑÑÐ°ÐºÑÐ¾Ñ
ÑÐµÑÑÐ¾Ð²ÑÐ¹ Ð²Ð¾Ð¿ÑÐ¾Ñ
ÑÑÐµÐ±Ð½ÑÐ¹ ÐºÑÑÑ
Ð¼ÐµÑÑÐ¸ÐºÐ° Ð½ÐµÐ¿ÑÐ°Ð²Ð¸Ð»ÑÐ½Ð¾ÑÑÐ¸
Ð¾Ð¿ÐµÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ¸ÑÑÐµÐ¼Ð°
ÑÑÐµÐ½Ð°ÑÐ¸Ð¹ Ð°Ð´Ð¼Ð¸Ð½Ð¸ÑÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ
ÑÐµÐ¼Ð°Ð½ÑÐ¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ°Ð±Ð»Ð¾Ð½
bash
automation
answer option
distractor
test question
training course
metrics of adverse
operational system
scenario administration
semantic pattern

description: Ð Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½ Ð¿Ð¾Ð´ÑÐ¾Ð´ Ðº Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸Ð·Ð°ÑÐ¸Ð¸
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ÑÐ°Ð·Ð´ÐµÐ»Ð° Â«Ð¤Ð°Ð¹Ð»Ð¾Ð²ÑÐµ ÑÐ¸ÑÑÐµÐ¼Ñ LinuxÂ» ÑÑÐµÐ±Ð½Ð¾Ð³Ð¾ ÐºÑÑÑÐ° Â«ÐÑÐ½Ð¾Ð²Ñ
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description: In the graduation qualification work, an approach to building
automation is considered sets of incorrect answers (distractors) to test
questions on programming BASH scripts for administering operating
systems. It is proposed to form distracters using transformations semantic
template correct answer. Developed and software implemented generation
algorithms for distractors with various irregularity metrics. results final
works were tested on the test tasks of the âFile Systems Linuxâ training
course "Fundamentals of operating systems".
Online Change Point Detection for Weighted and Directed Random Dot Product Graphs
Creators: name: Marenco, Bernardo
name: Bermolen, Paola
name: Fiori, Marcelo
name: Larroca, Federico
name: Mateos, Gonzalo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: Signal Processing (eess.SP)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Given a sequence of random (directed and weighted) graphs, we address the problem of online monitoring and detection of changes in the underlying data distribution. Our idea is to endow sequential change-point detection (CPD) techniques with a graph representation learning substrate based on the versatile Random Dot Product Graph (RDPG) model. We consider efficient, online updates of a judicious monitoring function, which quantifies the discrepancy between the streaming graph observations and the nominal RDPG. This reference distribution is inferred via spectral embeddings of the first few graphs in the sequence. We characterize the distribution of this running statistic to select thresholds that guarantee error-rate control, and under simplifying approximations we offer insights on the algorithm's detection resolution and delay. The end result is a lightweight online CPD algorithm, that is also explainable by virtue of the well-appreciated interpretability of RDPG embeddings. This is in stark contrast with most existing graph CPD approaches, which either rely on extensive computation, or they store and process the entire observed time series. An apparent limitation of the RDPG model is its suitability for undirected and unweighted graphs only, a gap we aim to close here to broaden the scope of the CPD framework. Unlike previous proposals, our non-parametric RDPG model for weighted graphs does not require a priori specification of the weights' distribution to perform inference and estimation. This network modeling contribution is of independent interest beyond CPD. We offer an open-source implementation of the novel online CPD algorithm for weighted and direct graphs, whose effectiveness and efficiency are demonstrated via (reproducible) synthetic and real network data experiments.
description: Accepted in IEEE Transactions on Signal and Information Processing over Networks