Results 1 to 10 of about 23,957,674 (349)
Chiral magnetic skyrmions across length scales
New Journal of Physics, 2023 The profile, radius, and energy of chiral skyrmions, found in magnetic materials with the Dzyaloshinskii–Moriya (DM) interaction and easy-axis anisotropy perpendicular to the film, have been previously calculated in the asymptotic limits of small and ...
Stavros Komineas +2 more
doaj +1 more source
Asymptotic Max-Min SINR Analysis of Reconfigurable Intelligent Surface Assisted MISO Systems [PDF]
IEEE Transactions on Wireless Communications, 2019 This work focuses on the downlink of a single-cell multi-user system in which a base station (BS) equipped with $M$ antennas communicates with $K$ single-antenna users through a reconfigurable intelligent surface (RIS) installed in the line-of-sight (
Qurrat-Ul-Ain Nadeem +4 more
semanticscholar +1 more source
The quantum Neumann model: asymptotic analysis [PDF]
, 2005 We use semi--classical and perturbation methods to establish the quantum theory of the Neumann model, and explain the features observed in previous numerical computations.Comment: 14 pages, 3 ...
Bellon, Marc, Talon, Michel
core +4 more sources
Solitary waves in atomic chains and peridynamical media
Mathematics in Engineering, 2019 Peridynamics describes the nonlinear interactions in spatially extended Hamiltonian systems by nonlocal integro-differential equations, which can be regarded as the natural generalization of lattice models.
Michael Herrmann, Karsten Matthies
doaj +1 more source
Asymptotic Analysis of the MMРР|M|1 Retrial Queue with Negative Calls under the Heavy Load Condition [PDF]
Известия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2020 In the paper, a single-server retrial queueing system with MMPP arrivals and an exponential law of the service time is studied. Unserviced calls go to an orbit and stay there during random time distributed exponentially, they access to the server ...
Fedorova, Ekaterina A. +2 more
doaj +1 more source
Asymptotic analysis of silicon based Bragg fibers [PDF]
, 2003 We developed an asymptotic formalism that fully characterizes the propagation and loss properties of a Bragg fiber with finite cladding layers. The formalism is subsequently applied to miniature air-core Bragg fibers with Silicon-based cladding mirrors ...
Fleming, James G. +3 more
core +1 more source
Asymptotic analysis of multicell massive MIMO over Rician fading channels [PDF]
IEEE International Conference on Acoustics, Speech, and Signal Processing, 2016 This work considers the downlink of a multicell massive MIMO system in which L base stations (BSs) of N antennas each communicate with K single-antenna user equipments randomly positioned in the coverage area.
L. Sanguinetti, A. Kammoun, M. Debbah
semanticscholar +1 more source
Optimal Strokes of Low Reynolds Number Linked-Sphere Swimmers
Applied Sciences, 2019 Optimal gait design is important for micro-organisms and micro-robots that propel themselves in a fluid environment in the absence of external force or torque.
Qixuan Wang
doaj +1 more source
Asymptotic analysis of an advection-diffusion equation and application to boundary controllability
Asymptotic Analysis, 2019 We perform the asymptotic analysis of the scalar advection-diffusion equation y t ε − ε y x x ε + M y x ε = 0 , ( x , t ) ∈ ( 0 , 1 ) × ( 0 , T ) , M > 0 , with respect to the diffusion coefficient ε.
Y. Amirat, A. Münch
semanticscholar +1 more source
Performance Analysis of Large Intelligent Surfaces (LISs): Asymptotic Data Rate and Channel Hardening Effects [PDF]
IEEE Transactions on Wireless Communications, 2018 The concept of a large intelligent surface (LIS) has recently emerged as a promising wireless communication paradigm that can exploit the entire surface of man-made structures for transmitting and receiving information.
Minchae Jung +4 more
semanticscholar +1 more source