cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nonequilibrium dynamics of a simple stochastic model
Creators: name: Godreche, C
name: Luck, J M
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the low-temperature dynamics of a simple stochastic model, introduced recently in the context of the physics of glasses. The slowest characteristic time at equilibrium diverges exponentially at low temperature. On smaller time scales, the nonequilibrium dynamics of the system exhibits an aging regime. We present an analytical study of the scaling behaviour of the mean energy, of its local correlation and response functions, and of the associated fluctuation-dissipation ratio throughout the regime of low temperature and long times. This analysis includes the aging regime, the convergence to equilibrium, and the crossover behaviour between them.
description: 36 pages, plain tex, 7 figures, to be published by Journal of Physics A
Frequency dependent transport in the integer quantum Hall effect
Creators: name: Bäker, A.
name: Schweitzer, L.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The frequency dependent transport is investigated for a two-dimensional disordered system under QHE conditions. The real and imaginary parts of the conductivity are calculated numerically in linear response using a recursive Green function technique. The energy dependence of $σ_{xx}(E,ω)$ is obtained within the lowest Landau band. When the width of the system exceeds the characteristic length, $L_ω=(\hbarωρ(E))^{-1/2}$, the maximum of the real part of $σ_{xx}(E,ω)$ decays with frequency almost linearly which is different from the classical Drude behaviour.
description: 2 pages incl. 3 eps-figures. Proceedings of the ICPS 25, Osaka, 17-22 September 2000
Convergence of simulated annealing by the generalized transition probability
Creators: name: Nishimori, Hidetoshi
name: Inoue, Jun-ichi
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We prove weak ergodicity of the inhomogeneous Markov process generated by the generalized transition probability of Tsallis and Stariolo under power-law decay of the temperature. We thus have a mathematical foundation to conjecture convergence of simulated annealing processes with the generalized transition probability to the minimum of the cost function. An explicitly solvable example in one dimension is analyzed in which the generalized transition probability leads to a fast convergence of the cost function to the optimal value. We also investigate how far our arguments depend upon the specific form of the generalized transition probability proposed by Tsallis and Stariolo. It is shown that a few requirements on analyticity of the transition probability are sufficient to assure fast convergence in the case of the solvable model in one dimension.
description: 11 pages
WATER RETENTION AND NUTRIENT RECYCLING IN SOILS AND FROM STREAMS FOR IMPROVED AGRICULTURAL PRODUCTION - WATERAGRI PROJECT UNDER H2020
Creators: name: Wieslaw Fialkiewicz
name: Małgorzata Biniak-Pieróg
name: Burszta-Adamiak, Ewa
name: Miklas Scholz
Publisher: name: Zenodo
Year: 2020

description: WATERAGRI - Water retention and nutrient recycling in soils and streams for improved agricultural
 production is a new H2020 Research & Innovation project starting in May 2020 and lasting for 4
 years. The WATERAGRI consortium consists of 23 partners from 12 European countries under the
 lead of Lund University (Sweden) among which is the Wrocław University of Environmental and Life
 Sciences. WATERAGRI is taking up the challenge of solving the problems of water management and
 fertilization in agriculture in a sustainable way in order to secure food production in Europe in the
 21st century.
Gravitational waves from black hole collisions via an eclectic approach
Creators: name: Baker, J.
name: Bruegmann, B.
name: Campanelli, M.
name: Lousto, C. O.
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present the first results in a new program intended to make the best use of all available technologies to provide an effective understanding of waves from inspiralling black hole binaries in time for imminent observations. In particular, we address the problem of combining the close-limit approximation describing ringing black holes and full numerical relativity, required for essentially nonlinear interactions. We demonstrate the effectiveness of our approach using general methods for a model problem, the head-on collision of black holes. Our method allows a more direct physical understanding of these collisions indicating clearly when non-linear methods are important. The success of this method supports our expectation that this unified approach will be able to provide astrophysically relevant results for black hole binaries in time to assist gravitational wave observations.
description: 4 pages, 3 eps figures, Revtex
Dynamics of magnetic Bianchi VI_0 cosmologies
Creators: name: Weaver, Marsha
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Methods of dynamical systems analysis are used to show rigorously that the presence of a magnetic field orthogonal to the two commuting Killing vector fields in any spatially homogeneous Bianchi type VI_0 vacuum solution to Einstein's equation changes the evolution toward the singularity from convergent to oscillatory. In particular, it is shown that the alpha-limit set (for time direction that puts the singularity in the past) of any of these magnetic solutions contains at least two sequential Kasner points of the BKL sequence and the orbit of the transition solution between them. One of the Kasner points in the alpha-limit set is non-flat, which leads to the result that each of these magnetic solutions has a curvature singularity.
description: 14 pages, 1 figure. Final version
Latent Heat Calculation of the 3D q=3, 4, and 5 Potts models by Tensor Product Variational Approach
Creators: name: Gendiar, Andrej
name: Nishino, Tomotoshi
Publisher: name: arXiv
Year: 2001
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Three-dimensional (3D) $q$-state Potts models ($q$=3, 4, and 5) are studied by the tensor product variational approach (TPVA), which is a recently developed variational method for 3D classical lattice models. The variational state is given by a two-dimensional (2D) product of local factors, and is improved by way of self-consistent calculations assisted by the corner transfer matrix renormalization group (CTMRG). It should be noted that no a priori condition is imposed for the local factor. Transition temperatures and latent heats are calculated from the observations of thermodynamic functions in both ordered and disordered phases.
description: RevTeX4 format, 7 pages, 15 figures, submitted to Phys. Rev. E
Anisotropic magnetic-field response of quantum critical fluctuations in Ni-doped CeCoIn5
Creators: name: Yokoyama, M.
name: Suzuki, K.
name: Tenya, K.
name: Nakamura, S.
name: Kono, Y.
name: Kittaka, S.
name: Sakakibara, T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: This paper demonstrates the anisotropic response of quantum critical fluctuations with respect to the direction of the magnetic field $B$ in Ni-doped CeCoIn$_5$ by measuring the magnetization $M$ and specific heat $C$. The results show that $M/B$ at $B=0.1\ {\rm T}$ for both the tetragonal $c$ and $a$ directions exhibits $T^{-η}$ dependencies, and that $C/T$ at $B=0$ follows a $-\ln T$ function, which are the characteristics of non-Fermi-liquid (NFL) behaviors. For $B\,||\,c$, both the $M/B\propto T^{-η}$ and $C/T \propto -\ln T$ dependencies change into nearly temperature-constant behaviors by increasing $B$, indicating a crossover from the NFL state to the Fermi-liquid state. For $B\,||\,a$, however, the NFL behavior in $C/T$ persists up to $B=7\ {\rm T}$, whereas $M/B$ exhibits temperature-independent behavior for $B\ge 1\ {\rm T}$. These contrasting characteristics in $M/B$ and $C/T$ reflect the anisotropic nature of quantum critical fluctuations; the $c$-axis spin component significantly contributes to the quantum critical fluctuations. We compare this anisotropic behavior of the spin fluctuations to superconducting properties in pure CeCoIn$_5$, especially to the anisotropy in the upper critical field and the Ising-like characteristics in the spin resonance excitation, and suggest a close relationship between them.
description: 7 pages, 5 figures, to appear in Phys. Rev. B
A device to safely perform experiments on radioactivity
Creators: name: Organtini, Giovanni
Publisher: name: arXiv
Year: 2018
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: This paper describes a cost effective and safe device to perform realistic experiments about the physics of radioactivity in classrooms. It can be used to study both $α-$ and $β-$radioactivity as well as $γ-$emitters and shows an extremely realistic behaviour. The device, in the form of a Geiger-Müller tube, was tested during a public lecture and it deceived many people, even among physicists and teachers.
description: 8 pages, 3 figures
IVGR.xlsx
Creators: name: Jadson Pessoa
Publisher: name: figshare
Year: 2019
Subjects: subject: Economics
subject: 140302 Econometric and Statistical Methods
subject: FOS: Economics and business
subject: 140102 Macroeconomic Theory
subject: 140103 Mathematical Economics
subject: 140304 Panel Data Analysis
subject: 140305 Time-Series Analysis
subject: 140218 Urban and Regional Economics
subject: 140104 Microeconomic Theory
subject: 140212 Macroeconomics (incl. Monetary and Fiscal Theory)

description: price of the housing according central bank of Brazil
Signatures of information scrambling in the dynamics of the entanglement spectrum
Creators: name: Rakovszky, Tibor
name: Gopalakrishnan, Sarang
name: Parameswaran, S. A.
name: Pollmann, Frank
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We examine the time evolution of the entanglement spectrum of a small subsystem of a non-integrable spin chain following a quench from a product state. We identify signatures in this entanglement spectrum of the distinct dynamical velocities (related to entanglement and operator spreading) that control thermalization. We show that the onset of level repulsion in the entanglement spectrum occurs on different timescales depending on the "entanglement energy", and that this dependence reflects the shape of the operator front. Level repulsion spreads across the entire entanglement spectrum on timescales close to when the mutual information between individual spins at the ends of the subsystem reaches its maximum; this timescale is much shorter than that for full thermalization of the subsystem. We provide an analytical understanding of this phenomenon and show supporting numerical data for both random unitary circuits and a microscopic Hamiltonian.
description: 4 + epsilon pages, 3 figures; Supplementary Material: 5 pages, 4 figures
Bell-Instability-Mediated Spectral Modulation of Hadronic Gamma Rays from a Supernova Remnant Interacting with a Molecular Cloud
Creators: name: Inoue, Tsuyoshi
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Supernova remnants (SNRs) are believed to be the site of galactic cosmic-ray acceleration. However, the details of the cosmic-ray acceleration are still not well understood. Gamma ray observation is a promising method to study cosmic-ray acceleration in the SNRs, because a hadronic gamma ray can trace high energy cosmic-rays above ~GeV energy. Conventional theory predicts that the hadronic gamma ray shows a flat vFv spectrum from the pion-creation threshold energy to the maximum energy of diffusive shock acceleration. In this paper, by employing numerical simulations that solve a hybrid system of the magnetohydrodynamics of a molecular cloud and diffusive propagation of cosmic-rays, we demonstrate that the hadronic gamma ray spectrum can be harder than the conventional one and that the modulated spectrum becomes consistent with observations. The modification mechanism is explained as follows: The cosmic-rays accelerated at the supernova blast wave shock propagate into a clump of a molecular cloud. The cosmic-ray streaming in the cloud induces the so-called Bell instability that induces Alfven waves in the cloud. The induced magnetic field fluctuations prevent further cosmic-ray incursion by diminishing the diffusion coefficient for the cosmic-rays below ~1 TeV energy. This mechanism reinforces recent claims of a similar spectral modification by magnetic field amplification around a molecular cloud by Inoue et al.(2012) and Celli et al.(2018).
description: 8 pages, 6 figures, accepted for publication in ApJ
Archäologie des Frankenreiches - Neueste Forschungen. Internationales Kolloquium anläßlich der Ausstellung „Die Franken — Les francs"
Creators: name: Menghin, Wilfried
Publisher: name: Acta Praehistorica et Archaeologica
Year: 2024

description: Acta Praehistorica et Archaeologica, Bd. 30 (1998)
On the Origin of the Metal-Insulator Transition in 2D
Creators: name: Pudalov, V. M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Two phenomena have been recently observed in high-mobility Si MOS structures: (1) strong enhancement of the metallic conduction at low temperatures, T < 2K, and (2) the scaling behavior of the temperature and electric field dependences of the resistivity. These results evidence for the true metal-insulator transition in 2d, in apparent disagreement with the one-parameter scaling theory. Here we present a model that explains both effects in the framework of the spin-orbit interaction and provides a quantitative agreement with the experimental data.
description: 2 pages (postscript) including 1 table and 1 fig
title: Complicated enchondroma managed with curettage and bone grafting
Creators: name: Sajwan, Svetanshu
Publisher: name: EURORAD
Year: 2025
Subjects: subject: Musculoskeletal system
subject: Musculoskeletal bone
subject: Conventional radiography
subject: eLearning
subject: Neoplasia
subject: Clinical Case

description: Clinical History: A 65-year-old lady presented with complaints of pain and swelling in the left-hand middle finger following minor trauma. She has been having on-and-off dull aching pain. She sought treatment in a local hospital with buddy strapping. The blood investigation showed mildly elevated CRP (5.8 mg/dl) and ESR (50 mm/hr) but normal serum creatinine, calcium, phosphorus and alkaline phosphatase.

description: 65 years, female
The background simulation of experiment for searching of $2\nu2K$ capture in Xe-124
Creators: name: Kazalov, V. V.
name: Gangapshev, A. M.
name: Gavrilyuk, Yu. M.
name: Kuzminov, V. V.
name: Panasenko, S. I.
name: Petrenko, O. D.
name: Ratkevich, S. S.
name: Tekueva, D. A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We describe the Monte Carlo (MC) simulation package of the `2K-CAPTURE' setup and discuss the agreement of its output with data. The `2K-CAPTURE' MC simulates the energy loss of particles in detector and components of the passive shield and generates the resulting response in working volume large proportional counter (LPC). The simulation accounts for absorption, reemission, and scattering of both photons and neutrons and tracks them until they either are absorbed. The algorithm proceeds with a detailed simulation of the electronics chain. The MC is tuned using data collected with radioactive calibration source deployed in the internal channel of the installation. The simulation reproduces the energy response of the detector corresponding to distribution of the generated pointwise clusters of a charge of primary ionization in LPC.
description: 6 pages, 5 figures, 1 table, presented at IV international conference on particle physics and astrophysics
On (ultra-) completeness numbers and (pseudo-) paving numbers
Creators: name: Mynard, Frédéric
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 54A20, 54A25, 54D80, 54D45

description: We study the completeness and ultracompleteness numbers of a convergence space. In the case of a completely regular topological space, the completeness number is countable if and only if the space is $Č$ech-complete, and the ultracompleteness number is countable if and only if the space is ultracomplete. We show that the completeness number of a space is equal to the pseudopaving number of the upper Kuratowski convergence on the space of its closed subsets, at $\emptyset$. Similarly, the ultracocompleteness number of a space is equal to the paving number of the upper Kuratowski convergence on the space of its closed subsets, at $\emptyset$.
description: 17 pages
Development of 5G Communication in the Tropical Regions with a Link Budget
Creators: name: Trilochan Patra
name: Swarup Kumar Mitra
Publisher: name: Zenodo
Year: 2021
Subjects: Bit Error Rate (BER)
Signal to Noise Ratio (SNR)
MIMO Technique
Trellis Coded Modulation (TCM)
5G communication

description: The principal characteristic of tropical regions is that the torrential rain occurs almost throughout the year. As a result of this torrential rain, the signals of these areas get attenuated causing disruption in transmitting important messages from a transmitter to a receiver. So the people of these regions face a lot of obstacles in their field of wireless communication. To overcome these obstacles many researchers and developers have been trying heart and soul for a long time by using 5G communication. But no fruitful result has yet been obtained for this purpose. So the goal of this work is to remove these obstacles by using diversity techniques through 5G communication. To achieve the desired result multiple-input and multiple-output (MIMO) technique has been adopted as an antenna diversity technique and here this technique has been used in the communication link model designed for 5G communication for tropical regions. Here a link budget for the designed communication link model has been laid down to increase the signal power and signal to noise ratio (SNR) at the receiver. The link budget depends on different parameters and these parameters have been demonstrated in this work. In this work an experimental data sheet has also been adopted to achieve the desired result of the link budget.
Effect of Spin Gap on Single-Hole Excitation Spectrum in the One-Dimensional t-J-J'Model
Creators: name: Tohyama, Takami
name: Maekawa, Sadamichi
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We examine the effect of spin gap on single-hole spectral function in the one-dimensional t-J-J'model. At J'/J=1/2, where a dimer state is the ground state, an analytic expression is derived for J/t \to 0. At finite values of J/t, the numerical diagonalizations for finite-size clusters are performed. In contrast to the gapless case, we find that (i) the dispersion becomes symmetric around k=π/2, (ii) the singularity of the holon band is strongly suppressed, and (iii) the quasi-particle weight Z_{h} becomes finite at finite J/t. The feature (iii) is related to the presence of a bound state of the doped hole and an unpaired spin.
description: 3 pages, 4 figures, LaTeX, Proceedings of the International Conference on Spectroscopy of Novel Superconductors. To be published in Journal of Phys. and Chem. of Solids
Magnon transport in quasi-two-dimensional van der Waals antiferromagnets
Creators: name: Xing, Wenyu
name: Qiu, Luyi
name: Wang, Xirui
name: Yao, Yunyan
name: Ma, Yang
name: Cai, Ranran
name: Jia, Shuang
name: Xie, X. C.
name: Han, Wei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The recent emergence of 2D van der Waals magnets down to atomic layer thickness provides an exciting platform for exploring quantum magnetism and spintronics applications. The van der Waals nature stabilizes the long-range ferromagnetic order as a result of magnetic anisotropy. Furthermore, giant tunneling magnetoresistance and electrical control of magnetism have been reported. However, the potential of 2D van der Waals magnets for magnonics, magnon-based spintronics, has not been explored yet. Here, we report the experimental observation of long-distance magnon transport in quasi-twodimensional van der Waals antiferromagnet MnPS3, which demonstrates the 2D magnets as promising material candidates for magnonics. As the 2D MnPS3 thickness decreases, a shorter magnon diffusion length is observed, which could be attributed to the surface-impurity-induced magnon scattering. Our results could pave the way for exploring quantum magnonics phenomena and designing future magnonics devices based on 2D van der Waals magnets.
description: Main paper: 15 pages, 4 figures. Supplementary materials: 11 Figures
On the ADM Equations for General Relativity
Creators: name: Esposito, Giampiero
name: Stornaiolo, Cosimo
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Arnowitt-Deser-Misner (ADM) evolution equations for the induced metric and the extrinsic-curvature tensor of the spacelike surfaces which foliate the space-time manifold in canonical general relativity are a first-order system of quasi-linear partial differential equations, supplemented by the constraint equations. Such equations are here mapped into another first-order system. In particular, an evolution equation for the trace of the extrinsic-curvature tensor K is obtained whose solution is related to a discrete spectral resolution of a three-dimensional elliptic operator P of Laplace type. Interestingly, all nonlinearities of the original equations give rise to the potential term in P. An example of this construction is given in the case of a closed Friedmann-Lemaitre-Robertson-Walker universe. Eventually, the ADM equations are re-expressed as a coupled first-order system for the induced metric and the trace-free part of K. Such a system is written in a form which clarifies how a set of first-order differential operators and their inverses, jointly with spectral resolutions of operators of Laplace type, contribute to solving, at least in principle, the original ADM system.
description: 10 pages, plain Tex. The final version contains new original calculations
Power spectrum of primordial perturbations for an emergent universe in quantum reduced loop gravity
Creators: name: Olmedo, Javier
name: Alesci, Emanuele
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the dynamics and predictions of a new emergent-universe model recently derived within Quantum Reduced Loop Gravity and based on the so-called statistical regularization scheme. These effective geometries show a dynamical transition from a stationary spacetime, with nearly constant scale factor at very early times, to a late-time semiclassical phase well approximated by a classical Friedmann-Robertson-Walker spacetime. We show that this is always the case when the matter content is a minimally coupled scalar field subject to a quadratic potential, including the massless case. Besides, a finite period of (nearly) exponential expansion in the semiclassical region can take place. Hence, we incorporate cosmological scalar and tensor perturbations, with a well-defined dynamics, and compute their power spectra at the end of inflation. We show that they are nearly scale invariant up to some scale where scale invariance is broken. Besides, they show qualitative differences with respect to the bouncing scenario of Loop Quantum Cosmology at scales where the scale invariance is broken. Nevertheless, the tensor-to-scalar ratio remains approximately constant even for modes well affected by the background evolution.
description: 28 pages, 8 figures
A linearly Expanding Universe With Variable G and Lambda
Creators: name: Arbab, Arbab I.
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We have studied a cosmological model with a cosmological term of the form $Λ=3α\fr{\dot R^2}{R^2}+\bt\fr{\ddot R}{R}+\fr{3γ}{R^2} α, \ \bt γ$ are constants. The scale factor (R) is found to vary linearly with time for both radiation and matter dominated epochs. The cosmological constant is found to decrease as $t^{-2}$ and the rate of particle creation is smaller than the Steady State value. The model gives $Ω^Λ=\fr{1}{3}$ and $Ω^m=\fr{2}{3}$ in the present era, $Ω^Λ=Ω^m=\fr{1}{2}$ in the radiation era. The present age of the universe $(\rm t_p$) is found to be $\rm t_p=H_p^{-1}$ , where $\rm H_p$ is the Hubble constant. The model is free from the main problems of the Standard Model. Since the scale factor $\rm R\propto t$ during the entire evolution of the universe the ratio of the cosmological constant at the Planck and present time is $\rm\fr{Λ_{Pl}}{Λ_p}=10^{120}$. This decay law justifies why, today, the cosmological constant is exceedingly small.
description: A revised version
Instability of the Two-Dimensional Metallic Phase to Parallel Magnetic Field
Creators: name: Pudalov, V. M.
name: Brunthaler, G.
name: Prinz, A.
name: Bauer, G.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on magnetotransport studies of the unusual two-dimensional metallic phase in high mobility Si-MOS structures. We have observed that the magnetic field applied in the 2D plane suppresses the metallic state, causing the resistivity to increase dramatically by more than 30 times. Over the total existence range of the metallic state, we have found three distinct types of the magnetoresistance, related to the corresponding quantum corrections to the conductivity. Our data suggest that the unusual metallic state is a consequence of both spin- and Coulomb-interaction effects.
description: 6 pages, Latex, 4 ps figs
СУЩНОСТЬ ИННОВАЦИИ В ЦИФРОВОЙ ЭКОНОМИКИ
Creators: name: Шарипов, Бахтиёр
name: Жабборова, Самира
Publisher: name: Zenodo
Year: 2024

description: В данной статье основное внимание уделяется созданию цифровой экономики, изменению роли цифровых технологий в глобальной экономике и обществе, развитию цифровых платформ, приоритетам и проблемам цифровой экономики. На основе анализа предложены некоторые рекомендации по поиску ответов на существующие проблемы.
Reply to Comment "Invalidity of classes of approximate Hall effect calculations."
Creators: name: Kopnin, N. B.
name: Volovik, G. E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We reply to the criticism raised by Ao in his Comment (cond-mat/9801180). Being unable to properly treat the Hall conductivity in a mixed state of superconductors, Ao is looking for possible mistakes in microscopic and phenomenological calculations, as well as in the corresponding experiments. The errors in his treatment of the problem (cond-mat/9704247) are analized. We indicate where the approach advocated by him fails to properly account for the interaction with impurities and other sources of relaxation.
description: reply to Comment by Ao (cond-mat/9801180) on our paper in PRL, 79, 1377 (1997), revtex file, 1 page, no figures
Research on Error Analysis of Data throughput and BER for the Wireless OFDM PSK Network
Creators: name: M. Meena
name: V. Rajendran
Publisher: name: Zenodo
Year: 2021
Subjects: OFDM
RS
BCH
AWGN
RICIAN
RAYLEIGH

description: Wireless Communication is one of the greatest contributions to mankind. The main goal of wireless communication is to provide communication with high data rates. During this transmission over a wireless link, the sidebands from various carriers might overlap and give rise to interference. OFDM combats these interferences. OFDM is a multicarrier technique in which high data single stream are transmitted over a number of minimum data rate parallel sub-carriers. Due to this, the symbol duration tends to increase and reduce the effects of multipath spread delay. Also, for spectral efficiency, the cognitive radio is designed to utilize the best channels in periphery. It automatically detects the ready to be drawn channels in a wireless spectrum and then transmutes the reception and transmission parameters accordingly. In this paper, the error analysis is presented in OFDM system error correction with PSK modulation by using forward codes (Reed-Solomon codes and Bose–Chaudhuri–Hocquenghem codes) in order to get low BER, high data rate and also resilience the interferences in AWGN, RICIAN, RAYLEIGH channels and the result is stimulated using LABVIEW. Wireless communication has become vital which uses free space as a communication channel, the cognitive radio is a technology which proved that it is best in the developing wireless systems.
Atomistic defect states as quantum emitters in monolayer MoS$_2$
Creators: name: Klein, Julian
name: Lorke, Michael
name: Florian, Matthias
name: Sigger, Florian
name: Wierzbowski, Jakob
name: Cerne, John
name: Müller, Kai
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Wurstbauer, Ursula
name: Kaniber, Michael
name: Knap, Michael
name: Schmidt, Richard
name: Finley, Jonathan J.
name: Holleitner, Alexander W.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Quantum light sources in solid-state systems are of major interest as a basic ingredient for integrated quantum device technologies. The ability to tailor quantum emission through deterministic defect engineering is of growing importance for realizing scalable quantum architectures. However, a major difficulty is that defects need to be positioned site-selectively within the solid. Here, we overcome this challenge by controllably irradiating single-layer MoS$_{2}$ using a sub-nm focused helium ion beam to deterministically create defects. Subsequent encapsulation of the ion bombarded MoS$_{2}$ flake with high-quality hBN reveals spectrally narrow emission lines that produce photons at optical wavelengths in an energy window of one to two hundred meV below the neutral 2D exciton of MoS$_{2}$. Based on ab-initio calculations we interpret these emission lines as stemming from the recombination of highly localized electron-hole complexes at defect states generated by the helium ion bombardment. Our approach to deterministically write optically active defect states in a single transition metal dichalcogenide layer provides a platform for realizing exotic many-body systems, including coupled single-photon sources and exotic Hubbard systems.
description: Main: 9 pages, 3 figures + SI: 19 pages, 10 figures
THE PERSPECTIVE OF ISLAMIC LAW ON WOMEN'S RIGHTS IN THE DISTRIBUTION OF INHERITANCE IN SASAK ETHNIC CUSTOMS IN BANGGAI REGENCY, INDONESIA
Creators: name: MARZUKI MARZUKI
name: AHMAD SYAMSURIADI
name: NURDIN NURDIN
Publisher: name: Zenodo
Year: 2024
Subjects: Islamic law, Wome Rights, Inheritance, Sasak Customs, Indonesia.

description: Abstract

This study discuss the perspective of Islamic law on women rights in distribution of inheritence in Sasak ethnic customs in Banggai regency, Indonesia. This study used quaitative approach with the data was collected through field observation, in-depth interview with local communities, and written document analysis. The findings of this research indicate that the rights of women in the inheritance distribution practices conducted by the indigenous Sasak community in the village of Mekar Jaya is referred to as "bebande" (carrying on the head). This term implies that female offspring are heirs entitled to inheritances. However, due to the community's custom of distributing inheritances through musyawarah (discussions), in some instances, daughters do not receive their rightful share of the inheritance. Our study also reveals that women often do not inherit due to the customary practice that they will be taken and live with their husbandsupon marriage. Sons, on the other hand, bear significant responsibilities, providing financial support to their families. As a result, women are financially supported by their husbands, and the inheritances allocated to them are relatively modest, contingent on the approval of female heirs. Despite these challenges, the underlying purpose of such practices is to maintain family harmony, particularly among the heirs.
Recent Development and Studies: The Consciousness' Forming by Fractal Education and the Problem of Divinity
Creators: name: Arghirescu Marius
Publisher: name: Zenodo
Year: 2021
Subjects: Fractal education/consciousness
Godness
scientific orthodoxy
providence
haric level

description: The paper analyzes the measure and the ways in which an individual or group consciousness can reach a ‘grace level’ (‚haric’ level) close to the maximum possible, considered of the Divinity. A first conclusion of the analysis is that the fractal, networked education, obtained from simple to complex and from an individual to a larger groups of (of group) consciences, within which the learning of an individual superior consciousness, in particular - teacher, professor, is transmitted to those spiritually guided by transmitting not only of his teaching but also of his attitude towards the transmitted teaching and the strategy of using it in society and the formation of individual and fractal consciences of haric level - understood as the highest value level of the psycho-social Good, requires a strategy of using the obtained orthodox-scientific teaching, based on completing the fundamental principles of the orthodoxy: purification, enlightenment, union with the Divinity, fight against evil, with the scientific principle of orthodox reciprocity. Another conclusion is that the possibility of the existence of a divine haric meta-consciousness, understood in the sense of haric spiritual leader of several haric super-consciences which are spiritual leaders of a significant number of superior consciences relative to the average level, exceeds the capacity of a single psycho-bio-social entity, resulting that a God with super-normal powers, capable of restoring the Good of the orthodox-scientific type in worldwide, can exist more as a judicial entity than as a single physical and spiritual entity, so- as a Divine Organization, more realistic and scientific being the concept of Godness, which must be both judicial and executive, based on scientific orthodoxy, which includes the principle of orthodox reciprocity. It results also that the possibility of spiritual leadership of the mankind by the Godness supposes energo-informational action with advanced technical means, such as telepathic amplifiers, which could also explain the transmission of the Holy Spirit and some reported paranormal manifestations such as the cases of "intelligent ghosts". It results also that the Godness may be recused by the scientific orthodoxism and the principles of the Providence must be modified in the form: orthodox-scientific cooperation with the Creation; orthodox-scientific leadership of the Creation and orthodox-scientific preservation of the Creation.
Optimal Control and Sensitivity Analysis of a Fractional Order TB Model
Creators: name: Rosa, Silverio
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 34A08, 49M05, 92C60

description: A Caputo fractional-order mathematical model for the transmission dynamics of tuberculosis (TB) was recently proposed in [Math. Model. Nat. Phenom. 13 (2018), no. 1, Art. 9]. Here, a sensitivity analysis of that model is done, showing the importance of accuracy of parameter values. A fractional optimal control (FOC) problem is then formulated and solved, with the rate of treatment as the control variable. Finally, a cost-effectiveness analysis is performed to assess the cost and the effectiveness of the control measures during the intervention, showing in which conditions FOC is useful with respect to classical (integer-order) optimal control.
description: This is a preprint of a paper whose final and definite form is with 'Statistics Opt. Inform. Comput.', Vol. 7, No 2 (2019). See [http://www.IAPress.org]. Submitted 09/Sept/2018; Revised 10/Dec/2018; Accepted 11/Dec/2018. arXiv admin note: text overlap with arXiv:1801.09634, arXiv:1810.06900
Paragathia albimarginata Warren 1902
Creators: name: Mbata, Keith J.
name: Prins, Jurate De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Paragathia
Paragathia albimarginata

description: Paragathia albimarginata Warren, 1902
COMMON NAME(S): Paved Emerald.
SYNONYM(S): Agathia delicia Thierry-Mieg, 1907.
IUCN STATUS: Not Ebvaluated (NE).
DISTRIBUTION: Angola, Cameroon, Côte d’Ivoire, Democratic Republic of Congo, Ethiopia, Gambia, Kenya, Malawi, Mozambique, Senegal, South Africa, Tanzania, Zambia, Zimbabwe.
LOCALITY IN ZAMBIA: ‘Lusaka’, in Lusaka Province.
LARVAL HOSTPLANT(S): Host plants include the Apocynaceae species, Carissa spinarum L.
SOURCES: African Moths 2019; De Prins & De Prins 2022; Pinhey 1975.
Genus Pingasa Moore, 1887
description: Published as part of Mbata, Keith J. & Prins, Jurate De, 2023, Annotated checklist of moths of Zambia (Insecta: Lepidoptera), pp. 1-503 in Zootaxa 5354 (1) on page 242, DOI: 10.11646/zootaxa.5354.1.1, http://zenodo.org/record/10130434
Radiative Production of Non-thermal Dark Matter
Creators: name: Kaneta, Kunio
name: Mambrini, Yann
name: Olive, Keith A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compare dark matter production from the thermal bath in the early universe with its direct production through the decay of the inflaton. We show that even if dark matter does not possess a direct coupling with the inflaton, Standard Model loop processes may be sufficient to generate the correct relic abundance.
description: 12 pages, 8 figures
On the universality of low-energy string model
Creators: name: Dereli, Tekin
name: Obukhov, Yuri N.
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The low-energy (bosonic "heterotic") string theory is interpreted as a universal limit of the Kaluza-Klein reduction when the dimension of an internal space goes to infinity. We show that such an approach is helpful in obtaining classical solutions of the string model. As a particular application, we obtain new exact static solutions for the two-dimensional effective string model. They turn out to be in agreement with the generalized no-hair conjecture, in complete analogy with the four and higher dimensional Einstein theory of gravity.
description: 11 pages, LATEX, no figures
Rational Decisions, Random Matrices and Spin Glasses
Creators: name: Galluccio, Stefano
name: Bouchaud, Jean-Philippe
name: Potters, Marc
Publisher: name: arXiv
Year: 1998
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We consider the problem of rational decision making in the presence of nonlinear constraints. By using tools borrowed from spin glass and random matrix theory, we focus on the portfolio optimisation problem. We show that the number of ``optimal'' solutions is generically exponentially large: rationality is thus de facto of limited use. In addition, this problem is related to spin glasses with Lévy-like (long-ranged) couplings, for which we show that the ground state is not exponentially degenerate.
The Linear Chain Clusters in Real Gases
Creators: name: Sedunov, Boris
Publisher: name: Zenodo
Year: 2021
Subjects: Real gas
supercritical fluid
bond energy
equilibrium constant
carbon dioxide

description: The chapter describes the new class of linear chain clusters, discovered by the author, and the methods of their properties evaluation. In real gases exist different types of clusters: linear with a minimal number of bonds between particles and tightly bound two and three dimensional clusters. The experimental data analysis for many pure gases shows wide zones of temperature and density, where the linear chain clusters dominate. The potential energy density series expansion by the monomer fraction density at moderate densities of real gases returns cluster bond parameters and their equilibrium constants, which may be attributed to this new class of clusters. The monomer fraction density based computer aided analysis of precise thermophysical data for pure fluids discovers wonderful properties of these unknown cluster structures in real gases. An extrapolation of these loosely bound clusters' properties to larger densities provides a selection of densely bound three dimensional clusters in sub- and supercritical fluids in general and especially in the CO2. It is important to know the clusters structure and parameters in this gas, widely used in supercritical fluid technologies. Step-by-step movement from diluted to dense gases discovers properties of large three dimensional clusters with numbers n of particles up to the level of one thousand. The logarithmic method to estimate the averaged numbers n of particles in three dimensional clusters is developed to study the mechanism of the soft structural transition between dominating cluster fractions with neighbor numbers n and between the gas-like and liquid-like supercritical fluids.
Pressure dependence of the spin dynamics around a quantum critical point : An inelastic neutron scattering study of Ce0.87La0.13Ru2Si2
Creators: name: Raymond, S.
name: Regnault, L. P.
name: Flouquet, J.
name: Wildes, A.
name: Lejay, P.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Inelastic neutron scattering experiments performed on a single crystal of the antiferromagnetic compound Ce$_{0.87}$La$_{0.13}$Ru$_{2}$Si$_{2}$ under applied pressures of up to 5 kbar are reported. A quantum critical point is reached at around 2.6 kbar where long-range magnetic order disappears. The variation of the characteristic energy scales with respect to temperature and pressure is followed and found to saturate in the ordered phase.
description: 14 pages (6 figures)
Evolution of Dynamical Coupling in Scalar Tensor Theory from Noether Symmetry
Creators: name: Modak, B.
name: Kamilya, S.
name: Biswas, S.
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the gravitational coupling function $ω(ϕ)$ in the vacuum scalar-tensor theory as allowed by the Noether symmetry. We also obtain some exact cosmological solutions in the spatially homogeneous and isotropic background thereby showing that the attractor mechanism is not effective enough to reduce the theory to Einstein theory. It is observed that, asymptotically, the scalar tensor theory goes over to Einstein theory with finite value of $ω$. This work thus supports earlier works in this direction.
description: 7 Pages, ReVTeX, no figure
Prasinocyma germinaria
Creators: name: Mbata, Keith J.
name: Prins, Jurate De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Prasinocyma
Prasinocyma germinaria

description: Prasinocyma germinaria (Guenée, 1857a)
COMMON NAME(S): Geometer moth.
SYNONYM(S): None.
IUCN STATUS: Not Evaluated (NE).
DISTRIBUTION: Cabo Verde, Democratic Republic of Congo, Ethiopia, Kenya, Lesotho, Mozambique, Nigeria, South Africa, Uganda, Zambia, Zimbabwe.
LOCALITY IN ZAMBIA: Lusaka, in Lusaka Province.
LARVAL HOSTPLANT(S): Unknown.
SOURCES: De Prins & De Prins 2022; Kopij 2006; Pinhey 1975.
description: Published as part of Mbata, Keith J. & Prins, Jurate De, 2023, Annotated checklist of moths of Zambia (Insecta: Lepidoptera), pp. 1-503 in Zootaxa 5354 (1) on page 242, DOI: 10.11646/zootaxa.5354.1.1, http://zenodo.org/record/10130434
title: What is the effect of active music participation on well-being among adults with Down's syndrome?
Creators: name: Bradford, N.
Publisher: name: Royal College of Music
Year: 2021

description: All known cultures experience music and the healing properties have been acknowledged for over 30,000 years. Research has indicated that music participation has the potential to support a range of well-being benefits, for example among older adults, people with dementia and people experiencing mental ill-health. Despite encouraging anecdotal reports, however, adults with learning disabilities have typically been under-represented in well-being research and there is very little literature examining music participation within this community. Those studies that do exist have tended to focus on separate components of well-being, which has presented an incomplete picture. This multiple methods research investigated how music participation can support the well-being of adults with learning disabilities, with a particular focus on adults with Down’s syndrome. The research was conducted via three studies: (1) an ethnographic case study of four students attending regular music sessions via the Music Man Project UK, (2) a survey study exploring the prevalence of music usage within the UK Mencap network, and (3) a within-subjects intervention study to investigate the impact of a 10 week programme of music-making, delivered and supported by the Music Man Project UK, on well-being among adults with Down’s syndrome. The results indicate that active music participation can indeed enhance positive well-being and reduce negative well-being for adults with Down’s syndrome. Study 1 highlighted the wide ranging well-being benefits experienced by participants and their families, for whom music-making was a regular ongoing activity. Four overarching themes emerged: positive emotions; educational development; meaning; and, accomplishment. Study 2 provided an insight into how Mencap (the largest UK charity supporting people with learning disabilities) used music as part of its programme and identified barriers that potentially inhibited music-making. Study 3 demonstrated improved well-being scores following a 10 week intervention programme of music-making with participants who had not participated in regular music sessions previously. Implications from the research could inform accessible music intervention strategies to support and enhance well-being in this often marginalised group in society. In so doing, this research contributes to providing equal opportunities to music-making and its associated well-being benefits to people with learning disabilities, comparable to their non-learning disabled counterparts.