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1.
Nonlinear Dynamics - In this paper, an economic competition between two firms that want to maximize the weighted-average social welfare and own profits is proposed. This kind of competition is... 相似文献
2.
Mohammad Nasser H. EL-Sherbiny Gamal M. Hammad Ali A. Askar Ahmed A. El- Nour Salwa A. Abou 《Cellulose (London, England)》2022,29(3):1791-1805
Cellulose - Antibacterial coatings based on bacterial cellulose (BC) have been widely used in many fields including food packaging and wound dressing. In this study, we aimed to synthesis of... 相似文献
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4.
Sandugash K. Kodanova Moldir K. Issanova Tlekkabul S. Ramazanov Askar K. Khikmetov Sergey A. Maiorov 《等离子体物理论文集》2019,59(6)
In this paper, the relaxation properties of a fully ionized, hot, ideal plasma have been studied using the molecular dynamics method. As an example, the classical problem of equalization of the electron and ion temperatures for various mass ratios is considered, the relaxation times for temperatures is determined, and the influence of the number of particles and the type of boundary conditions on the simulation results is studied. The simulation results are compared with the available theoretical results. 相似文献
5.
Arif A. Suleymanov Askar A. Abbasov Aydin J. Ismaylov 《Chaos, solitons, and fractals》2009,41(5):2474-2483
The peculiarities of fractal characteristics’ calculations for time series are described in this article. An algorithm for calculation of fractal dimension is suggested. It has been proved that the suggested method possesses high accuracy and the rapidity of convergence on the limited number of measurements compared to the methods of covering.The criteria of early diagnosis for changes in the condition of hydrodynamic processes, which do not vary by fractal dimension, have been recommended.The presented method is applicable for practical engineering calculations with self-affine, chaotic data, usually with relatively limited number of measurements. It is quite a simple method for calculation of fractal dimension, algorithm can be easily realized and it should be useful for engineers.The applicability of the proposed algorithm for fractal dimension calculation and early diagnosis criteria of qualitative changes in the behaviour of various dynamic systems has been tested both on simulated as well as practical examples of oil and gas production. 相似文献
6.
A method is presented for obtaining periodic solutions to forced oscillations of non-linear systems governed by equations of the form uss?uyy?εf(u,u,y,uyy…,s) = 0. The method is presented by application to the equation uss?uyy?εu2yuyy= 0 which governs the vibrations of a soil layer that is free on the top surface and is forced harmonically at the bedrock. It is shown that unlike the ODE case (Duffing equation), the PDE requires an infinite number of periodicity conditions to correctly characterize the resonant region and these conditions lead to an infinite number of branches in the dispersion spectrum. Calculations indicate that these branches tend to an envelope curve. The uniform approach presented by Millmann and Keller is discussed in order to determine in what sense it can be viewed as an effective approximation for the fundamental mode. 相似文献
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The effect of gravitational and inertial forces on the precision cumulation of cavities, fast mass flows, and detonation and
shock waves is studied in stages. The possible effects of these forces on the motion of masses and waves (the velocity, direction
and structure of the waves can change) and on the properties of the medium in front of the waves that influence the change
in the parameters and refraction of the waves are noted. It is shown that it is advantageous to perform precision cumulation
experiments in zero-gravity.
Zh. éksp. Teor. Fiz. 111, 2001–2015 (June 1997) 相似文献
9.
The paper derives the relevant non-linear integro-differential evolution equation by the method due to Collins expanding on a procedure by Keller. The quadratically non-linear case is not a trivial variation over the cubically non-linear case that was presented in preceding papers. As expected a different scaling and ordering of terms is needed and the first order perturbation solution provides no information on resonance. Nevertheless, although obtained by much longer calculations, the final equation for the present case is of identical form, with differences only in numerical coefficients, with the cubic case that was presented and solved earlier. 相似文献
10.
The formation of gas channels in rotating liquids is investigated and the application of such channels as capillaries for
high-power discharges in x-ray lasers, for transporting particle and radiation fluxes, and lowering breakdown thresholds (including
with the use of metal fillings), for structural systems for microwave generation and particle acceleration, and for photochemical
and shock action on a liquid, and so on, is discussed. It is noted that tubular active elements and samples can be fabricated
by solidification and crystallization during rotation.
Pis’ma Zh. éksp. Teor. Fiz. 65, No. 3, 291–294 (10 February 1997) 相似文献