cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Large Deviations in the Early Universe
Creators: name: Cohen, Timothy
name: Green, Daniel
name: Premkumar, Akhil
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Fluctuations play a critical role in cosmology. They are relevant across a range of phenomena from the dynamics of inflation to the formation of structure. In many cases, these fluctuations are coarse grained and follow a Gaussian distribution as a consequence of the Central Limit Theorem. Yet, some classes of observables are dominated by rare fluctuations and are sensitive to the details of the underlying microphysics. In this paper, we argue that the Large Deviation Principle can be used to diagnose when one must to appeal to the fundamental description. Concretely, we investigate the regime of validity for the Fokker-Planck equation that governs Stochastic Inflation. For typical fluctuations, this framework leads to the central limit-type behavior expected of a random walk. However, fluctuations in the regime of the Large Deviation Principle are determined by instanton-like saddle points accompanied by a new energy scale. When this energy scale is above the UV cutoff of the EFT, the tail is only calculable in the microscopic description. We explicitly demonstrate this phenomenon in the context of determining the phase transition to eternal inflation, the distribution of scalar field fluctuations in de Sitter, and the production of primordial black holes.
description: 32 pages + references, 3 figures. v2: typos corrected, published version
Generalized $β$-conformal change and special Finsler spaces
Creators: name: Youssef, Nabil L.
name: Abed, S. H.
name: Elgendi, S. G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53B40, 53B05

description: In this paper, we investigate the change of Finslr metrics $$L(x,y) \to\bar{L}(x,y) = f(e^{σ(x)}L(x,y),β(x,y)),$$ which we refer to as a generalized $β$-conformal change. Under this change, we study some special Finsler spaces, namely, quasi C-reducible, semi C-reducible, C-reducible, $C_2$-like, $S_3$-like and $S_4$-like Finsler spaces. We also obtain the transformation of the T-tensor under this change and study some interesting special cases. We then impose a certain condition on the generalized $β$-conformal change, which we call the b-condition, and investigate the geometric consequences of such condition. Finally, we give the conditions under which a generalized $β$-conformal change is projective and generalize some known results in the literature.
description: References added, some modifications are performed, LateX file, 24 pages
Conductivity anisotropy in the antiferromagnetic state of iron pnictides
Creators: name: Valenzuela, B.
name: Bascones, E.
name: Calderón, M. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recent experiments on iron pnictides have uncovered a large in-plane resistivity anisotropy with a surprising result: the system conducts better in the antiferromagnetic x direction than in the ferromagnetic y direction. We address this problem by calculating the ratio of the Drude weight along the x and y directions, Dx/Dy, for the mean-field Q=(π,0) magnetic phase diagram of a five-band model for the undoped pnictides. We find that Dx/Dy ranges between 0.3 < D_x/D_y < 1.4 for different interaction parameters. Large values of orbital ordering favor an anisotropy opposite to the one found experimentally. On the other hand D_x/D_y is strongly dependent on the topology and morfology of the reconstructed Fermi surface. Our results points against orbital ordering as the origin of the observed conductivity anisotropy, which may be ascribed to the anisotropy of the Fermi velocity.
description: 4 pages, 3 pdf figures. Fig 1(b) changed, one equation corrected, minor changes in the text, references updated
Fractals with point impact in functional linear regression
Creators: name: McKeague, Ian W.
name: Sen, Bodhisattva
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: This paper develops a point impact linear regression model in which the trajectory of a continuous stochastic process, when evaluated at a sensitive time point, is associated with a scalar response. The proposed model complements and is more interpretable than the functional linear regression approach that has become popular in recent years. The trajectories are assumed to have fractal (self-similar) properties in common with a fractional Brownian motion with an unknown Hurst exponent. Bootstrap confidence intervals based on the least-squares estimator of the sensitive time point are developed. Misspecification of the point impact model by a functional linear model is also investigated. Non-Gaussian limit distributions and rates of convergence determined by the Hurst exponent play an important role.
description: Published in at http://dx.doi.org/10.1214/10-AOS791 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Quantum cosmology of pure connection general relativity
Creators: name: Gielen, Steffen
name: Nash, Elliot
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study homogeneous cosmological models in formulations of general relativity with cosmological constant based on a (complexified) connection rather than a spacetime metric, in particular in a first order theory obtained by integrating out the self-dual two-forms in the chiral Plebanski formulation. Classical dynamics for the Bianchi IX model are studied in the Lagrangian and Hamiltonian formalism, where we emphasise the reality conditions needed to obtain real Lorentzian solutions. The solutions to these reality conditions fall into different branches, which in turn lead to different real Hamiltonian theories, only one of which is the usual Lorentzian Bianchi IX model. We also show the simpler case of the flat Bianchi I model, for which both the reality conditions and dynamical equations simplify considerably. We discuss the relation of a real Euclidean version of the same theory to this complex theory. Finally, we study the quantum theory of homogeneous and isotropic models, for which the pure connection action for general relativity reduces to a pure boundary term and the path integral is evaluated immediately, reproducing known results in quantum cosmology. An intriguing aspect of these theories is that the signature of the effective spacetime metric, and hence the interpretation of the cosmological constant, are intrinsically ambiguous.
description: 36 pages, version accepted for publication in Classical and Quantum Gravity
Spontaneous Scalarization of Black Holes in Gauss-Bonnet Teleparallel Gravity
Creators: name: Bahamonde, Sebastian
name: Doneva, Daniela D.
name: Ducobu, Ludovic
name: Pfeifer, Christian
name: Yazadjiev, Stoytcho S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we find new scalarized black holes by coupling a scalar field with the Gauss-Bonnet invariant in Teleparallel gravity. The Teleparallel formulation of this theory uses torsion instead of curvature to describe the gravitational interaction and it turns out that, in this language, the usual Gauss-Bonnet term in four dimensions, decays in two distinct boundary terms, the Teleparallel Gauss-Bonnet invariants. Both can be coupled individually, or in any combination to a scalar field, to obtain a Teleparallel Gauss-Bonnet extension of the Teleparallel equivalent of general relativity. The theory we study contains the familiar Riemannian Einstein-Gauss-Bonnet gravity theory as a particular limit and offers a natural extension, in which scalarization is triggered by torsion and with new interesting phenomenology. We demonstrate numerically the existence of asymptotically flat scalarized black hole solutions and show that, depending on the choice of coupling of the boundary terms, they can have a distinct behaviour compared to the ones known from the usual Einstein-Gauss-Bonnet case. More specifically, non-monotonicity of the metric functions and the scalar field can be present, a feature that was not observed until now for static scalarized black hole solutions.
description: 23 pages, 10 figures. Matches published version in PRD
Stability, structural, elastic and electronic properties of polymorphs of the superconducting disilicide YIr2Si2
Creators: name: Shein, Igor R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using the ab initio approaches, the comparative stability, structural, elastic, and electronic properties of three polymorphs of the superconducting disilicide YIr2Si2, which differ in the atomic configurations of [Ir2Si2] (or [Si2Ir2]) blocks, were examined. For these YIr2Si2 polymorphs, the optimized structural data, elastic parameters, electronic bands, total and partial densities of states, Fermi surface topology, and chemical bonding have been obtained and analyzed. Our studies showed that although ThCr2Si2- and CaBe2Ge2-type polymorphs are mechanically stable and relatively hard materials with low compressibility, they will behave as ductile systems. Among them, ThCr2Si2-type polymorph will show enhanced elastic anisotropy. In the vicinity of the Fermi energy, the topology of the electronic bands and the Fermi surface for various polymorphs are quite different. Besides, the CaBe2Ge2-type polymorph is expected to be anisotropic, i.e. happening mainly in the [Si2Ir2] blocks. The inter-atomic bonding for YIr2Si2 polymorph phases can be described as an anisotropic mixture of covalent, metallic, and ionic contributions, where inside the [Ir2Si2] (or [Si2Ir2]) blocks, Ir-Si and Ir-Ir bonds take place, whereas between the adjacent [Ir2Si2] (or [Si2Ir2]) blocks and Y atomic sheets, Si-Si and Ir-Y, Si-Ir and Si-Y, or mainly Ir-Ir bonds emerge for various polymorphs.
description: 14 pages, 4 figures
Far-Infrared Properties of Spitzer-selected Luminous Starbursts
Creators: name: Kovács, A.
name: Omont, A.
name: Beelen, A.
name: Lonsdale, C.
name: Polletta, M.
name: Fiolet, N.
name: Greve, T. R.
name: Borys, C.
name: Cox, P.
name: De Breuck, C.
name: Dole, H.
name: Dowell, C. D.
name: Farrah, D.
name: Lagache, G.
name: Menten, K. M.
name: Bell, T. A.
name: Owen, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present SHARC-2 350 micron data on 20 luminous z ~ 2 starbursts with S(1.2mm) > 2 mJy from the Spitzer-selected samples of Lonsdale et al. and Fiolet et al. All the sources were detected, with S(350um) > 25 mJy for 18 of them. With the data, we determine precise dust temperatures and luminosities for these galaxies using both single-temperature fits and models with power-law mass--temperature distributions. We derive appropriate formulae to use when optical depths are non-negligible. Our models provide an excellent fit to the 6um--2mm measurements of local starbursts. We find characteristic single-component temperatures T1 ~ 35.5+-2.2 K and integrated infrared (IR) luminosities around 10^(12.9+-0.1) Lsun for the SWIRE-selected sources. Molecular gas masses are estimated at 4 x 10^(10) Msun, assuming kappa(850um)=0.15 m^2/kg and a submillimeter-selected galaxy (SMG)-like gas-to-dust mass ratio. The best-fit models imply >~2 kpc emission scales. We also note a tight correlation between rest-frame 1.4 GHz radio and IR luminosities confirming star formation as the predominant power source. The far-IR properties of our sample are indistinguishable from the purely submillimeter-selected populations from current surveys. We therefore conclude that our original selection criteria, based on mid-IR colors and 24 um flux densities, provides an effective means for the study of SMGs at z ~ 1.5--2.5.
description: 13 pages, 4 figures, edited to match published version in ApJ 717, 29-39 (2010)
Symmetric Teleparallel Horndeski Gravity
Creators: name: Bahamonde, Sebastian
name: Trenkler, Georg
name: Trombetta, Leonardo G.
name: Yamaguchi, Masahide
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Horndeski gravity is the most general scalar-tensor theory with one scalar field leading to second-order Euler-Lagrange field equations for the metric and scalar field, and it is based on Riemannian geometry. In this paper, we formulate an analogue version of Horndeski gravity in a symmetric teleparallel geometry which assumes that both the curvature (general) and torsion are vanishing and gravity is only related to nonmetricity. Our setup requires that the Euler-Lagrange equations for not only metric and scalar field but also connection should be at most second order. We find that the theory can be always recast as a sum of the Riemannian Horndeski theory and new terms that are purely teleparallel. Due to the nature of nonmetricity, there are many more possible ways of constructing second-order theories of gravity. In this regard, up to some assumptions, we find the most general $k$-essence extension of Symmetric Teleparallel Horndeski gravity. We also formulate a novel theory containing higher-order derivatives acting on nonmetricity while still respecting the second-order conditions, which can be recast as an extension of Kinetic Gravity Braiding. We finish our study by presenting the FLRW cosmological equations for our model.
description: 35 pages. Matches published version in PRD
Microfluidic rheology of soft colloids above and below jamming
Creators: name: Nordstrom, K. N.
name: Verneuil, E.
name: Arratia, P. E.
name: Basu, A.
name: Zhang, Z.
name: Yodh, A. G.
name: Gollub, J. P.
name: Durian, D. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The rheology near jamming of a suspension of soft colloidal spheres is studied using a custom microfluidic rheometer that provides stress versus strain rate over many decades. We find non-Newtonian behavior below the jamming concentration and yield stress behavior above it. The data may be collapsed onto two branches with critical scaling exponents that agree with expectations based on Hertzian contacts and viscous drag. These results support the conclusion that jamming is similar to a critical phase transition, but with interaction-dependent exponents.
description: 4 pages, experiment
Analysis of Shot Noise at Finite Temperatures in Fractional Quantum Hall Edge States
Creators: name: Iyoda, E.
name: Fujii, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate shot noise at {\it finite temperatures} induced by the quasi-particle tunneling between fractional quantum Hall (FQH) edge states. The resulting Fano factor has the peak structure at a certain bias voltage. Such a structure indicates that quasi-particles are weakly {\it glued} due to thermal fluctuation. We show that the effect makes it possible to probe the difference of statistics between $ν=1/5,{}2/5$ FQH states where quasi-particles have the same unit charge.Finally we propose a way to indirectly obtain statistical angle in hierarchical FQH states.
description: 5 pages, 3 figures
Quantum and semi--quantum key distribution in networks
Creators: name: Bala, Rajni
name: Asthana, Sooryansh
name: Ravishankar, V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we utilize the potential offered by multidimensional separable states (MSS) for secure and simultaneous distributions of keys in a layered network. We present protocols for both quantum and semi-quantum key distribution and discuss their robustness against various eavesdropping strategies. We provide a procedure to identify the requisite resource states to generalise these protocols for arbitrary layered networks. Finally, we study the interrelation between the local dimensionalities of states and achievable key rates in a given layer. These proposals are realisable with current technology, thanks to employment of MSS and many advances in generation, manipulation and measurement of higher-dimensional orbital angular momentum states of light.
Quantum entanglement produced in the formation of a black hole
Creators: name: Martin-Martinez, E.
name: Garay, L. J.
name: Leon, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A field in the vacuum state, which is in principle separable, can evolve to an entangled state in a dynamical gravitational collapse. We will study, quantify, and discuss the origin of this entanglement, showing that it could even reach the maximal entanglement limit for low frequencies or very small black holes, with consequences in micro-black hole formation and the final stages of evaporating black holes. This entanglement provides quantum information resources between the modes in the asymptotic future (thermal Hawking radiation) and those which fall to the event horizon. We will also show that fermions are more sensitive than bosons to this quantum entanglement generation. This fact could be helpful in finding experimental evidence of the genuine quantum Hawking effect in analog models.
description: 5 pages, 2 figures, revtex4, Journal ref. added
Quasar UV/X-ray relation luminosity distances are shorter than reverberation-measured radius-luminosity relation luminosity distances
Creators: name: Khadka, Narayan
name: Zajaček, Michal
name: Prince, Raj
name: Panda, Swayamtrupta
name: Czerny, Bożena
name: Martínez-Aldama, Mary Loli
name: Jaiswal, Vikram Kumar
name: Ratra, Bharat
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use measurements of 59/58 quasars (QSOs), over a redshift range $0.0041\leq z \leq 1.686$, to do a comparative study of the radius--luminosity ($R-L$) and X-ray$-$UV luminosity ($L_X-L_{UV}$) relations and the implication of these relations for cosmological parameter estimation. By simultaneously determining $R-L$ or $L_X-L_{UV}$ relation parameters and cosmological parameters in six different cosmological models, we find that both $R-L$ and $L_X-L_{UV}$ relations are standardizable but provide only weak cosmological parameter constraints, with $L_X-L_{UV}$ relation data favoring larger current non-relativistic matter density parameter $Ω_{m0}$ values than $R-L$ relation data and most other available data. We derive $L_X-L_{UV}$ and $R-L$ luminosity distances for each of the sources in the six cosmological models and find that $L_X-L_{UV}$ relation luminosity distances are shorter than $R-L$ relation luminosity distances as well as standard flat $Λ$CDM model luminosity distances. This explains why $L_X-L_{UV}$ relation QSO data favor larger $Ω_{m0}$ values than do $R-L$ relation QSO data or most other cosmological measurements. While our sample size is small and only spans a small $z$ range, these results indicate that more work is needed to determine whether the $L_X-L_{UV}$ relation can be used as a cosmological probe.
description: 20 pages, 10 figures, MNRAS in press
title: ÐÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ CMS MODX Ð¿ÑÐ¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð²ÐµÐ±-ÑÐ°Ð¹Ñ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: Using CMS MODX for website development
Creators: name: ÐÐ¸Ð»ÐºÐµÐ²Ð¸Ñ, ÐÐ°ÑÐ°Ð»Ð¸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: 2019
Subjects: Ð²ÐµÐ±-ÑÐ°Ð¹Ñ
ÑÐ°Ð½Ðº
ÑÐ½Ð¸Ð¿Ð¿ÐµÑ
Ð¿Ð»Ð°Ð³Ð¸Ð½
ÑÐµÐ³Ð¸
ÐºÐ¾Ð½ÑÐµÐ½Ñ
Ð°Ð´Ð°Ð¿ÑÐ¸Ð²Ð½Ð°Ñ Ð²ÐµÑÑÑÐºÐ°
website
chunk
snippet
plugin
tags
content
responsive layout

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ñ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ CMS MODX Ð¿ÑÐ¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð²ÐµÐ±-ÑÐ°Ð¹ÑÐ° Ð¸ ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐ°Ð¹ÑÐ° Â«Ð¡Ð¾ÐµÐ²ÑÐµ Ð¿ÑÐ¾Ð´ÑÐºÑÑÂ». Ð¡Ð°Ð¹Ñ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÐ·ÑÐºÐ° Ð³Ð¸Ð¿ÐµÑÑÐµÐºÑÑÐ¾Ð²Ð¾Ð¹ ÑÐ°Ð·Ð¼ÐµÑÐºÐ¸ HTML5, ÐºÐ°ÑÐºÐ°Ð´Ð½ÑÑ ÑÐ°Ð±Ð»Ð¸Ñ ÑÑÐ¸Ð»ÐµÐ¹ CSS3, ÑÐ·ÑÐºÐ¾Ð² Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ PHP Ð¸ JavaScript, ÑÑÐµÐ¹Ð¼Ð²Ð¾ÑÐºÐ¾Ð² jQuery Ð¸ Bootstrap. Ð¡ÑÑÑÐºÑÑÑÐ½Ð°Ñ ÑÑÐµÐ¼Ð° ÑÐ°Ð¹ÑÐ° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ñ ÑÑÐµÑÐ¾Ð¼ ÑÐ¿ÐµÑÐ¸ÑÐ¸ÐºÐ¸ ÑÑÐµÑÑ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸: Ð²ÐºÐ»ÑÑÐµÐ½ ÐºÐ°ÑÐ°Ð»Ð¾Ð³ Ñ ÐºÐ°ÑÐµÐ³Ð¾ÑÐ¸ÑÐ¼Ð¸ Ð¿ÑÐ¾Ð´ÑÐºÑÐ¾Ð² Ð¸ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÑ Ð¾ÑÐ¾ÑÐ¼Ð»ÐµÐ½Ð¸Ñ Ð·Ð°ÐºÐ°Ð·Ð° Ð½Ð° ÑÐ°Ð¹ÑÐµ. Ð Ð´Ð°Ð»ÑÐ½ÐµÐ¹ÑÐµÐ¼ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ ÑÐ°ÑÑÐ¸ÑÐµÐ½Ð¸Ðµ ÑÐµÐºÑÑÐµÐ³Ð¾ ÑÑÐ½ÐºÑÐ¸Ð¾Ð½Ð°Ð»Ð° ÑÐ°Ð¹ÑÐ° Ð² Ð²Ð¸Ð´Ðµ Ð´Ð¾Ð±Ð°Ð²Ð»ÐµÐ½Ð¸Ñ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ Ð¾Ð½Ð»Ð°Ð¹Ð½-Ð¾Ð¿Ð»Ð°ÑÑ Ð·Ð°ÐºÐ°Ð·Ð°, Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ Ð¾ÑÑÐ»ÐµÐ¶Ð¸Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°ÑÐµÐ»ÐµÐ¼ ÑÑÐ°ÑÑÑÐ° Ð·Ð°ÐºÐ°Ð·Ð°.
description: In this graduation work, we explored the features of using CMS MODX when developing a website and testing this system using the example of developing a Soy Products website.
The site was developed using HTML5 hypertext markup language, CSS3 cascading style sheets, PHP and JavaScript programming languages, jQuery frameworks and Bootstrap. The structural scheme of the site was developed taking into account the specifics of the company's field of activity: a catalog with product categories and the possibility of placing an order on the site are included. In the future, it is possible to expand the current functionality of the site in the form of adding the possibility of online payment of the order, the ability to track the order status by the user.
Multi-Level Steganography: Improving Hidden Communication in Networks
Creators: name: Fraczek, Wojciech
name: Mazurczyk, Wojciech
name: Szczypiorski, Krzysztof
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cryptography and Security (cs.CR)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: The paper presents Multi-Level Steganography (MLS), which defines a new concept for hidden communication in telecommunication networks. In MLS, at least two steganographic methods are utilised simultaneously, in such a way that one method (called the upper-level) serves as a carrier for the second one (called the lower-level). Such a relationship between two (or more) information hiding solutions has several potential benefits. The most important is that the lower-level method steganographic bandwidth can be utilised to make the steganogram unreadable even after the detection of the upper-level method: e.g., it can carry a cryptographic key that deciphers the steganogram carried by the upper-level one. It can also be used to provide the steganogram with integrity. Another important benefit is that the lower-layer method may be used as a signalling channel in which to exchange information that affects the way that the upper-level method functions, thus possibly making the steganographic communication harder to detect. The prototype of MLS for IP networks was also developed, and the experimental results are included in this paper.
description: 18 pages, 13 figures
Effectiveness of COVID-19 Vaccines against SARS-CoV-2 Variants of Concern in Real-world: a Literature Review and Meta-analysis
Creators: name: Shao, Weihao
name: Chen, Xiaorui
name: Zheng, Caifang
name: Liu, Haoshuang
name: Wang, Gaili
name: Zhang, Bowen
name: Li, Zhiyuan
name: Zhang, Weidong
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Knowing vaccine effectiveness (VE) against variants of concern (VOCs) in the real-world setting is essential for public health decision-making. A systematic landscape of the VE against a series of clinical outcomes caused by the VOCs in the real-world setting is needed. We systematically searched for studies that evaluated VE against VOCs in the real-world setting and collected individual data. We identified 113 studies meeting the eligibility criteria. We found full vaccination provided strong protection against each clinical outcome with summary VE ranging from 86.8% to 96.0% Alpha, moderate protection against infection caused by Beta, Gamma and Delta with summary VE ranging from 70.9% to 72.8%, strong protection against severe disease caused by Delta with summary VE ranging from 84.9% to 90.3%, limited protection with summary VE of 23.5% (95% CI, 17.0-29.5) against infection and moderate protection with summary VE ranging from 56.5% to 82.4% against severe diseases caused by Omicron. Booster vaccination can provide a substantial improvement in protection against Delta and Omicron, but not as much as the Delta. The meta-regression analysis showed that the VE against the Omicron wanned over time, and the VE against hospitalization declined relatively slowly compared to against infection. Those findings supported the need for public health measures, increasing booster vaccination coverage in response to current and new infectious waves driven by variants and developing broadly protective vaccines to confront virus evolution.
title: ÐÑÐ¾ÐµÐºÑ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¸ Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ñ Ð²Ð½ÑÑÑÐ¸ÑÐºÐ¾Ð»ÑÐ½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ð¾ÑÐµÐ½ÐºÐ¸ Ð¸Ð½Ð´Ð¸Ð²Ð¸Ð´ÑÐ°Ð»ÑÐ½ÑÑ Ð´Ð¾ÑÑÐ¸Ð¶ÐµÐ½Ð¸Ð¹ ÑÑÐ°ÑÐ¸Ñ ÑÑ
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: Project for developing and implementing an in-school system for evaluating individual student achievement
Creators: name: ÐÐ°Ð¹ÐºÐ¾Ð², ÐÐ°ÐºÑÐ¸Ð¼
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: 2020
Subjects: Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½ÑÐµ ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸
Ð³ÐµÐ¹Ð¼Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ
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Ð²ÐµÐ±-ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ°
Ð»Ð¾Ð³Ð¸ÐºÐ¾ÑÑÑÑÐºÑÑÑÐ½ÑÐ¹ Ð¿Ð¾Ð´Ñ Ð¾Ð´
information technology
gamification
organization of the educational process
web development
logical framework approach

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½ Ð¿ÑÐ¾ÐµÐºÑ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¸ Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ñ ÑÐ¸ÑÑÐµÐ¼Ñ Ð²Ð½ÑÑÑÐ¸ÑÐºÐ¾Ð»ÑÐ½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ð¸Ð½Ð´Ð¸Ð²Ð¸Ð´ÑÐ°Ð»ÑÐ½ÑÑ Ð´Ð¾ÑÑÐ¸Ð¶ÐµÐ½Ð¸Ð¹ ÑÑÐ°ÑÐ¸ÑÑÑ. ÐÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ Ð¸Ð¼ÐµÑÑÐ¸ÐµÑÑ ÑÐ¿Ð¾ÑÐ¾Ð±Ñ Ð³ÐµÐ¹Ð¼Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸. ÐÑÐ¸Ð²ÐµÐ´ÐµÐ½Ð¾ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¹ Ð¸ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÐ¾Ð² Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Ð²ÑÐ±ÑÐ°Ð½Ñ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ Ð¿Ð¾Ð´ÑÐ¾Ð´ÑÑÐ¸Ðµ
Ð¸Ð· Ð½Ð¸Ñ Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐ°Ð¼Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ. ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ñ Ð·Ð°Ð¸Ð½ÑÐµÑÐµÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÑÐ¾ÑÐ¾Ð½ Ðº ÑÐ¸ÑÑÐµÐ¼Ðµ. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð¿Ð»Ð°Ð½ Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ñ ÑÐ¸ÑÑÐµÐ¼Ñ Ð² Ð¾Ð±ÑÐµÑÐºÐ¾Ð»ÑÐ½ÑÑ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÑ. Ð£Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ Ð¿ÑÐ¾ÐµÐºÑÐ¾Ð¼ Ð¾ÑÑÑÐµÑÑÐ²Ð»ÐµÐ½Ð¾ Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð¹ ÑÑÐµÐ´Ñ MS Project Ð¸ Ð»Ð¾Ð³Ð¸ÐºÐ¾-ÑÑÑÑÐºÑÑÑÐ½Ð¾Ð³Ð¾ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð°.
description: This paper presents a project of the development and implementation of an intraschool system of individual achievements of students. The available methods of gamification were analyzed. A comparison of various technologies and programming tools was given, the most suitable of them were selected and the system was developed. Ð¡oncerned partiesâ requirements for the system are identified. A plan has been
developed for introducing the system into the educational process. Project management was carried out using the MS Project software environment and a logical framework approach.
title: ÐÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿Ð° ÐºÑÐ¾ÑÑÐ¿Ð»Ð°ÑÑÐ¾ÑÐ¼ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð´Ð»Ñ Ð±ÑÑÑÑÐ¾Ð¹ ÐºÐ¾Ð½ÑÐµÐ¿ÑÑÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¸ Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½ÑÑ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð¼ÐµÑÐ¾Ð´Ð¾Ð»Ð¾Ð³Ð¸Ð¸ agile Ð¸ Ð¿ÑÐµÐ´Ð¼ÐµÑÐ½Ð¾-Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ
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: Prototyping and development of the cross-platform application prototype for rapid mobile application conceptualization and prototyping using agile methodology and domain-driven design
Creators: name: ÐÐ¾Ð·Ð»Ð¾Ð², ÐÐ¸ÐºÐ¸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: 2020
Subjects: Ð³Ð¸Ð±ÐºÐ°Ñ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ°
Ð¿ÑÐµÐ´Ð¼ÐµÑÐ½Ð¾-Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ðµ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÑÐµÑÐ¼Ð¸Ð½Ð¾Ð»Ð¾Ð³Ð¸Ñ Ð¾Ð³ÑÐ°Ð½Ð¸ÑÐµÐ½Ð½ÑÑ ÐºÐ¾Ð½ÑÐµÐºÑÑÐ¾Ð²
agile methodology
domain-driven design
bounded contexts terminology

description: Ð ÑÐ°Ð¼ÐºÐ°Ñ Ð´Ð¸Ð¿Ð»Ð¾Ð¼Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ» ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿ ÐºÑÐ¾ÑÑÐ¿Ð»Ð°ÑÑÐ¾ÑÐ¼ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð´Ð»Ñ Ð±ÑÑÑÑÐ¾Ð¹ ÐºÐ¾Ð½ÑÐµÐ¿ÑÑÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¸ Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½ÑÑ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð¼ÐµÑÐ¾Ð´Ð¾Ð»Ð¾Ð³Ð¸Ð¸ agile Ð¸ Ð¿ÑÐµÐ´Ð¼ÐµÑÐ½Ð¾-Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ. Ð Ð¿ÐµÑÐ²Ð¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¾Ð¿Ð¸ÑÑÐ²Ð°ÑÑÑÑ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð¿ÑÐ¸Ð½ÑÐ¸Ð¿Ñ Ð¸ Ð¿Ð¾Ð´ÑÐ¾Ð´Ñ Ðº Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ñ. ÐÐ¾ Ð²ÑÐ¾ÑÐ¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¿Ð¾Ð´ÑÐ¾Ð±Ð½ÐµÐµ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ Ð¼ÐµÑÐ¾Ð´Ð¾Ð»Ð¾Ð³Ð¸Ð¹ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ Ð²ÑÐ´ÐµÐ»ÑÑÑÑÑ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð²Ð¸Ð´Ð¾Ð¸Ð·Ð¼ÐµÐ½ÑÑÑÑÑ Ð¸Ñ Ð¾ÑÐ´ÐµÐ»ÑÐ½ÑÐµ Ð°ÑÐ¿ÐµÐºÑÑ Ð´Ð»Ñ Ð´Ð°Ð»ÑÐ½ÐµÐ¹ÑÐµÐ³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿Ð°. Ð ÑÑÐµÑÑÐµÐ¹ Ð³Ð»Ð°Ð²Ðµ Ð¾Ð¿Ð¸ÑÑÐ²Ð°ÐµÑÑÑ Ð¿ÑÐ¾ÑÐµÑÑ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸. ÐÐ±Ð·Ð¾Ñ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÐ¾Ð² Ð¸ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿Ð°. Ð ÑÐµÑÐ²ÐµÑÑÐ¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¿ÑÐ¸Ð²Ð¾Ð´ÑÑÑÑ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ.
description: As part of the thesis, a prototype of cross-platform application was developed for the rapid conceptualization and prototyping of mobile applications using the agile methodology and domain-driven design. The first chapter describes the basic principles and approaches to software design and development. In the second chapter, an analysis of the main design methodologies is performed in more details and their individual aspects are identified and modified for further prototype design. The third chapter describes the preparation process and an overview of tools for prototyping. The fourth chapter provides test results.
Non-linear responses and three-particle correlators in correlated electron systems exemplified by the Anderson impurity model
Creators: name: Kappl, Patrick
name: Krien, Friedrich
name: Watzenböck, Clemens
name: Held, Karsten
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Three-particle correlators are relevant for, among others, Raman, Hall and non-linear responses. They are also required for the next order of approximations extending dynamical mean-field theory diagrammatically. We present a general formalism on how to treat these three-particle correlators and susceptibilities, and calculate the local three-particle response of the Anderson impurity model numerically. We find that genuine three-particle vertex corrections are sizable. In particular, it is not sufficient to just take the bare bubble terms or corrections based on the two-particle vertex. The full three-particle vertex must be considered.
description: 18 pages, 18 figures
Global phase diagram of three-dimensional extended Boson Hubbard model - a continuous time Quantum Monte Carlo study
Creators: name: Xi, Bin
name: Ye, Fei
name: Chen, Weiqiang
name: Zhang, Fuchun
name: Su, Gang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present the global phase diagram of the extended boson Hubbard model on a simple cubic lattice by quantum Monte Carlo simulation with worm update algorithm. Four kinds of phases are supported by this model, including superfluid, supersolid, Mott, and charge density wave (CDW) states, which are identified in the phase diagram of chemical potential $μ$ versus nearest neighbor interaction V . By changing the chemical potential, a continuous transition is found from the Mott phase to a superfluid phase without breaking the translational symmetry. For an insulating CDW state, adding particles to it gives rise to a continuous transition to a supersolid phase, while removing particles usually leads to a first-order one to either supersolid or superfluid phase. By tuning the nearest neighbor interaction, one can realize the transition between two insulating phases, Mott and CDW with the same particle density, which turns out to be of the first-order. We also demonstrate that a supersolid phase with average particle density less than 1/2 can exist in a small region of $μ$ - V phase diagram.
Compactlike kinks and vortices in generalized models
Creators: name: Bazeia, D.
name: da Hora, E.
name: Menezes, R.
name: de Oliveira, H. P.
name: Santos, C. dos
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This work deals with the presence of topological defects in k-field models, where the dynamics is generalized to include higher order power in the kinetic term. We investigate kinks in (1,1) dimensions and vortices in (2,1) dimensions, focusing on some specific features of the solutions. In particular, we show how the kinks and vortices change to compactlike solutions, controlled by the parameter used to introduce the generalized models.
description: 7 pages, 7 figures. Version to be published in PRD
title: ÐÐ¾Ð´ÐµÐ»Ð¸ Ð¿Ð¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ ÑÐ¾Ð»Ð¿Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ° Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ 27.04.03 - Ð¡Ð¸ÑÑÐµÐ¼Ð½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¸ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ ; 27.04.03_01 - Ð¢ÐµÐ¾ÑÐ¸Ñ Ð¸ Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¼ÐµÑÐ¾Ð´Ñ ÑÐ¸ÑÑÐµÐ¼Ð½Ð¾Ð³Ð¾ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð¸ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð² ÑÐµÑ Ð½Ð¸ÑÐµÑÐºÐ¸Ñ Ð¸ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÐºÐ¸Ñ ÑÐ¸ÑÑÐµÐ¼Ð°Ñ
titleType: Subtitle
Creators: name: ÐÐ¸ÑÐ¾Ð³Ð¾Ð²Ð°, ÐÐ»Ð¸Ð½Ð°
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ÑÐ¸Ð½ÑÑÐ¸Ðµ ÑÐµÑÐµÐ½Ð¸Ð¹
Ð¿Ð¾Ð²ÐµÐ´ÐµÐ½Ð¸Ðµ ÑÐ¾Ð»Ð¿Ñ
Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
Ð¼Ð¾Ð´ÐµÐ»Ñ ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½Ð¾Ð¹ ÑÐ¸Ð»Ñ
ÑÐ²Ð°ÐºÑÐ°ÑÐ¸Ñ
Ð»Ð¸Ð´ÐµÑÑ

description: Ð­Ð²Ð°ÐºÑÐ°ÑÐ¸Ñ ÑÐ¾Ð»Ð¿Ñ Ð² Ð·Ð´Ð°Ð½Ð¸ÑÑ Ð²Ð¾ Ð²ÑÐµÐ¼Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÑÑÐµÐ·Ð²ÑÑÐ°Ð¹Ð½ÑÑ ÑÐ¸ÑÑÐ°ÑÐ¸Ð¹, ÑÐ°ÐºÐ¸Ñ ÐºÐ°Ðº Ð·ÐµÐ¼Ð»ÐµÑÑÑÑÐµÐ½Ð¸Ðµ, Ð¿Ð¾Ð¶Ð°Ñ Ð¸Ð»Ð¸ ÑÐµÑÐ°ÐºÑ, ÑÐ¶Ðµ Ð´Ð°Ð²Ð½Ð¾ Ð¿ÑÐ¸Ð·Ð½Ð°Ð½Ð° Ð²Ð°Ð¶Ð½Ð¾Ð¹ Ð¸ ÑÐ»Ð¾Ð¶Ð½Ð¾Ð¹ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ð¾Ð¹. ÐÑÐ¸ÑÐ¸Ð½Ð° Ð² ÑÐ¾Ð¼, ÑÑÐ¾ Ð´Ð»Ñ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÑ ÑÑÑÐ°ÑÐµÐ³Ð¸Ð¹ ÑÐ²Ð°ÐºÑÐ°ÑÐ¸Ð¸ Ð¸ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ð·Ð´Ð°Ð½Ð¸Ñ Ð²Ð°Ð¶Ð½Ð¾ Ð¿Ð¾Ð½Ð¸Ð¼Ð°Ð½Ð¸Ðµ Ð¸ Ð¿ÑÐµÐ´ÑÐºÐ°Ð·Ð°Ð½Ð¸Ðµ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ²Ð¾Ð¹ÑÑÐ² ÑÐ¾Ð»Ð¿Ñ Ð²Ð¾ Ð²ÑÐµÐ¼Ñ ÑÐ²Ð°ÐºÑÐ°ÑÐ¸Ð¸. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÐ¹ Ð¼Ð¾Ð´ÐµÐ»ÐµÐ¹ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð¿Ð¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ ÑÐ¾Ð»Ð¿Ñ. ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÐ¾ÑÐ¸Ð°Ð»ÑÐ½ÑÑ ÑÐ¸Ð» ÑÐ¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð° ÑÐ°ÑÑÐ¸ÑÐµÐ½Ð½Ð°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ, ÑÑÐ¸ÑÑÐ²Ð°ÑÑÐ°Ñ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ Ð»Ð¸Ð´ÐµÑÐ¾Ð² Ð½Ð° ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ ÑÐ²Ð°ÐºÑÐ°ÑÐ¸Ð¸.
description: The crowd evacuation in buildings during various emergencies, such as an earthquake, fire or terrorist attack, is an important and complex problem. It is important to understand and predict the dynamic of a crowd during an evacuation. These researches can help to develop efficient evacuation strategies and optimize building structures. The analysis of various models describing the crowd behavior. The developing of an expanded model based on the social force model. This model investigates the influence of the leaders on the efficiency of an evacuation.
Dynamical large deviations of linear diffusions
Creators: name: Buisson, Johan du
name: Touchette, Hugo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Linear diffusions are used to model a large number of stochastic processes in physics, including small mechanical and electrical systems perturbed by thermal noise, as well as Brownian particles controlled by electrical and optical forces. Here, we use techniques from large deviation theory to study the statistics of time-integrated functionals of linear diffusions, considering three classes of functionals or observables relevant for nonequilibrium systems which involve linear or quadratic integrals of the state in time. For these, we derive exact results for the scaled cumulant generating function and the rate function, characterizing the fluctuations of observables in the long-time limit, and study in an exact way the set of paths or effective process that underlies these fluctuations. The results gives a complete description of how fluctuations arise in linear diffusions in terms of effective forces that remain linear in the state or, alternatively, in terms of fluctuating densities and currents that solve Riccati-type equations. We illustrate these results using two common nonequilibrium models, namely, transverse diffusions in two dimensions involving a non-conservative rotating force, and two interacting particles in contact with heat baths at different temperatures.
description: v1: 31 pages, 6 figures; v2: typos corrected, close to published version
Natural band alignment of $\rm MgO_{1-x}S_{x}$ alloys
Creators: name: Ota, Yuichi
name: Kaneko, Kentaro
name: Onuma, Takeyoshi
name: Fujita, Shizuo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences
subject: 82D37

description: We have calculated formation enthalpies, band gaps, and natural band alignment for $\rm MgO_{1-x}S_{x}$ alloys by first principles calculation based on density functional theory. The calculated formation enthalpies show that the $\rm MgO_{1-x}S_{x}$ alloys exhibit a large miscibilitygap, and a metastable region was found to occur when the S content was below 18% or over 87%. Effect of S incorporation for band gaps of $\rm MgO_{1-x}S_{x}$ alloys shows large bowing parameter (b $ \simeq $ 13 eV) induced. The dependence of the band lineup of $\rm MgO_{1-x}S_{x}$ alloys on the S content by using two different methods, and the change in the energy position of valence band maximum (VBM) was larger than that of conduction band minimum. Based on the calculated VBM positions, we predicted that $\rm MgO_{1-x}S_{x}$ with S content 10 to 18% can be surface charge transfer doping by high electron affinity materials. The present work provides an example to design for p-type oxysulfide materials.
description: 22 pages, 6 figures
Correlated Mott insulators in a strong electric field: The effects of phonon renormalization
Creators: name: Mazzocchi, Tommaso Maria
name: Werner, Daniel
name: Gazzaneo, Paolo
name: Arrigoni, Enrico
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We characterize the response of a Mott insulating system to a static electric field in terms of its conducting and spectral properties. Dissipation is included by a coupling to fermionic baths and to either optical or acoustic phonons. This paper extends and completes the analysis made in a previous work by the authors [arXiv:2207.01921]. In the present work phonons are included diagrammatically within the Migdal approximation by also including self-consistency from the electronic feedback. The nonequilibrium steady-state is addressed by means of the dynamical mean-field theory based on the nonequilibrium Green's function approach, while the so-called auxiliary master equation approach is employed as impurity solver. With optical phonons the self-consistency suppresses the steady-state current at the onset of the metallic phase with respect to the nonself-consistent case. This is due to the interaction of phonons with the hot electrons of the lattice which increases their temperature, thus providing a less effective relaxation channel for the current-induced Joule heat. In addition, in the case of optical phonons the results are essentially independent of the temperature of the fermionic baths, as the latter is sensibly smaller than their characteristic frequency. On the other hand, with acoustic phonons the steady-state current is slightly suppressed by the self-consistent treatment only at field strengths close to half of the gap, away from the metallic phase, and especially at very small phonon frequency. Also, in this case the results seem to slightly depend on the temperature of the fermionic baths.
description: Data can be found at https://repository.tugraz.at/records/hgnz5-x5816
On 1-loop diagrams in AdS space and the random disorder problem
Creators: name: Hung, Ling-Yan
name: Shang, Yanwen
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the complex scalar loop corrections to the boundary-boundary gauge two point function in pure AdS space in Poincare coordinates, in the presence of a boundary quadratic perturbation to the scalar. These perturbations correspond to double trace perturbations in the dual CFT and modify the boundary conditions of the bulk scalars in AdS. We find that, in addition to the usual UV divergences, the 1-loop calculation suffers from a divergence originating in the limit as the loop vertices approach the AdS horizon. We show that this type of divergence is independent of the boundary coupling, and making use of which we extract the finite relative variation of the imaginary part of the loop via Cutkosky rules as the boundary perturbation varies. Applying our methods to compute the effects of a time-dependent impurity to the conductivities using the replica trick in AdS/CFT, we find that generally an IR-relevant disorder reduces the conductivity and that in the extreme low frequency limit the correction due to the impurities overwhelms the planar CFT result even though it is supposedly $1/N^2$ suppressed. Comments on the effect of time-independent impurity in such a system are presented.
description: 22 pages, 3 figures, Boundary conditions clarified, some typos fixed, presentations improved and references added
Gravitational signature of Schwarzschild black holes in dynamical Chern-Simons gravity
Creators: name: Molina, C.
name: Pani, Paolo
name: Cardoso, Vitor
name: Gualtieri, Leonardo
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Dynamical Chern-Simons gravity is an extension of General Relativity in which the gravitational field is coupled to a scalar field through a parity-violating Chern-Simons term. In this framework, we study perturbations of spherically symmetric black hole spacetimes, assuming that the background scalar field vanishes. Our results suggest that these spacetimes are stable, and small perturbations die away as a ringdown. However, in contrast to standard General Relativity, the gravitational waveforms are also driven by the scalar field. Thus, the gravitational oscillation modes of black holes carry imprints of the coupling to the scalar field. This is a smoking gun for Chern-Simons theory and could be tested with gravitational-wave detectors, such as LIGO or LISA. For negative values of the coupling constant, ghosts are known to arise, and we explicitly verify their appearance numerically. Our results are validated using both time evolution and frequency domain methods.
description: RevTex4, 12 pages, 8 figures, 3 Tables. v2: minor typos corrected and references added. Published version
Water quality: the missing dimension of water in the water–energy–food nexus
Creators: name: Heal, K. V.
name: Bartosova, A.
name: Hipsey, M. R.
name: Chen, X.
name: Buytaert, W.
name: Li, H.-Y.
name: McGrane, S. J.
name: Gupta, A. B.
name: Cudennec, C.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Science Policy

description: The role of water quality, particularly its impact on health, environment and wider well-being, are rarely acknowledged in the water–energy–food (WEF) nexus. Here we demonstrate the necessity to include water quality within the water dimension of the WEF nexus to address complex and multi-disciplinary challenges facing humanity. Firstly, we demonstrate the impact of water quality on the energy and food dimensions of the WEF nexus and vice versa at multiple scales, from households to cities, regions and transboundary basins. Secondly, we use examples to demonstrate how including water quality would have augmented and improved the WEF analysis and its application. Finally, we encourage hydrological scientists to promote relevant water quality research as addressing WEF nexus challenges. To make tangible progress, we propose that analysis of water quality interactions focuses initially on WEF nexus “hotspots,” such as cities, semi-arid areas, and areas dependent on groundwater or climate change-threatened meltwater.