The numerical results of the polynomial solution of the optimization problem with a free phase are presented. The case of a complex polynomial of the first degree is considered. This polynomial shows good approximatio...
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The paper is a short review of the problems arising in control of distributed systems of spacecraft due to different kinds of uncertainties and of various AI-based approaches to deal with them. The considered uncertai...
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The limit equilibrium of a cylindrical shell with a longitudinal crack under the action of a time-varying load is considered. Dynamic coefficients of intensity of forces and moments near the tips of cracks in shells m...
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An advanced method of constructing an analytical-numerical solution of the nonlinear antenna synthesis problem based on a given amplitude directivity pattern is considered. Using the method of least squares, the case ...
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ISBN:
(数字)9798331506087
ISBN:
(纸本)9798331506094
An advanced method of constructing an analytical-numerical solution of the nonlinear antenna synthesis problem based on a given amplitude directivity pattern is considered. Using the method of least squares, the case of obtaining an approximate analytical solution of the problem of non-convex minimization of functional for the case of isometric operator of direct problem is presented. Numerical results are given that confirm the effectiveness of the proposed approach.
The number of annual scientific publications is growing year by year, which has led to the accumulation and formation of large databases. This increases the complexity of the search for relevant articles. Modern searc...
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The numerical results of the polynomial solution of the optimization problem with a free phase are presented. The case of a complex polynomial of the first degree is considered. This polynomial shows good approximatio...
The numerical results of the polynomial solution of the optimization problem with a free phase are presented. The case of a complex polynomial of the first degree is considered. This polynomial shows good approximation characteristics of the optimization nonlinear functional.
Assessment of antigenic similarity between strains of the influenza virus is a crucial factor when planning vaccine compositions. To perform this, a gold-standard laboratory procedure, hemagglutination inhibition assa...
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In the work the mathematical model and method of system analysis for the qualitative and quantitative description of compound systems with random structure is proposed. The proposed scheme of investigation is applied ...
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The paper is a short review of the problems arising in control of distributed systems of spacecraft due to different kinds of uncertainties and of various AI-based approaches to deal with them. The considered uncertai...
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ISBN:
(数字)9798350390834
ISBN:
(纸本)9798350390841
The paper is a short review of the problems arising in control of distributed systems of spacecraft due to different kinds of uncertainties and of various AI-based approaches to deal with them. The considered uncertainties are caused by external and internal disturbances of different nature. The methods to deal with the uncertainties include neural networks, fuzzy logic, evolutionary algorithms, randomized algorithms and reinforcement learning.
To study the kinematics of flow rate and ventricular dilatation,an analytical perturbation approach of hydrocephalus has been *** research provides a comprehensive investigation of the characteristics of cerebrospinal...
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To study the kinematics of flow rate and ventricular dilatation,an analytical perturbation approach of hydrocephalus has been *** research provides a comprehensive investigation of the characteristics of cerebrospinal fluid(CSF)flow and pressure in a hydrocephalic *** influence of hydrocephalic CSF,flowing rotationally with realistic dynamical characteristics on pulsatile boundaries of subarachnoid space,was demonstrated using a nonlinear controlling system of *** analytical perturbation method of hydrocephalus has been developed to investigate the biomechanics of fluid flow rate and the ventricular *** this paper presents a detailed analysis of CSF flow and pressure dynamics in a hydrocephalic *** was elaborated with a nonlinear governing model of CSF to show the influence of hydrocephalic CSF,flowing rotationally with realistic dynamical behaviors on pulsatile boundaries of subarachnoid *** accordance with the suggested model,the elasticity factor changes depending on how much a porous layer,in this case the brain parenchyma,is *** was improved to include the relaxation of internal mechanical stresses for various perturbation orders,modelling the potential plasticity of brain *** initial geometry that was utilised to create the framework of CSF with pathological disease hydrocephalus and indeed the output of simulations using this model were compared to the actual progression of ventricular dimensions and shapes in *** to this observation,the non-linear and elastic mechanical phenomena incorporated into the current model are probably *** modelling of ventricular dilation at a normal pressure may benefit from the existence of a valid model whose parameters approximate genuine mechanical characteristics of the cerebral cortex.
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