Articles with "complex variable" as a keyword



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Complex variable methods for linearized Euler rigid body rotation equations

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Published in 2020 at "Acta Astronautica"

DOI: 10.1016/j.actaastro.2020.02.018

Abstract: Abstract The determination of analytical solutions is a vital step in understanding the different physical systems and building confidence in the numerical methods that are required for more complex models. In the present work, analytical… read more here.

Keywords: rigid body; complex variable; variable methods; methods linearized ... See more keywords
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Analyzing wave propagation problems with the improved complex variable element-free Galerkin method

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Published in 2019 at "Engineering Analysis with Boundary Elements"

DOI: 10.1016/j.enganabound.2018.02.001

Abstract: Abstract Two-dimensional wave propagation problems in this paper are analyzed with improved complex variable element-free Galerkin (ICVEFG) method. Improved complex variable moving least-squares (ICVMLS) approximation is applied to construct the shape function, and modified Galerkin… read more here.

Keywords: propagation problems; improved complex; method; wave propagation ... See more keywords
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Complex Zhang neural networks for complex-variable dynamic quadratic programming

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Published in 2019 at "Neurocomputing"

DOI: 10.1016/j.neucom.2018.10.078

Abstract: Abstract In this paper, a neurodynamic approach concerning complex Zhang neural networks (ZNNs) is presented to solve a complex-variable dynamic quadratic programming (QP). The proposed complex ZNNs are activated by various complex activation functions respectively,… read more here.

Keywords: neural networks; complex zhang; complex variable; variable dynamic ... See more keywords
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Novel ensemble intelligence methodologies for rockburst assessment in complex and variable environments

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Published in 2022 at "Scientific Reports"

DOI: 10.1038/s41598-022-05594-0

Abstract: Rockburst is a severe geological hazard that restricts deep mine operations and tunnel constructions. To overcome the shortcomings of widely used algorithms in rockburst prediction, this study investigates the ensemble trees, i.e., random forest (RF),… read more here.

Keywords: machine; gradient boosting; boosting machine; accuracy ... See more keywords
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Exponential synchronization in complex-variable network with distributed delays via intermittent control

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Published in 2017 at "International Journal of Modern Physics C"

DOI: 10.1142/s0129183117500899

Abstract: In this paper, exponential synchronization in complex-variable network with distributed delays is investigated. By utilizing intermittent control scheme, some effective controllers are designed. Based on the Lyapunov function method and mathematical analysis technique, some synchronization… read more here.

Keywords: synchronization complex; network; control; complex variable ... See more keywords
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A Complex Variable Solution for Rectangle Pipe Jacking in Elastic Half-Plane

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Published in 2017 at "Mathematical Problems in Engineering"

DOI: 10.1155/2017/5713063

Abstract: In mechanics, the solution of soil stresses and displacements field caused by shallow rectangular jacking pipe construction can be simplified as half-plane problem. Both the boundary conditions of the surface and the cavity boundary must… read more here.

Keywords: half plane; complex variable; solution; pipe ... See more keywords
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Disseminated cysticercosis in China with complex and variable clinical manifestations: a case series

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Published in 2019 at "BMC Infectious Diseases"

DOI: 10.1186/s12879-019-4171-4

Abstract: BackgroundCysticercosis is an emerging and neglected tropical disease (NTD) that poses a serious public health concern worldwide. Disseminated cysticercosis (DCC) is an uncommon manifestation of cysticercosis, also found in China.Case presentationWe report three cases of… read more here.

Keywords: complex variable; case; china complex; cysticercosis china ... See more keywords
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Application of a complex variable’s analytical functions at converting the points’ coordinates from one system to another

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Published in 2023 at "Geodesy and Cartography"

DOI: 10.22389/0016-7126-2023-994-4-50-59

Abstract: At processing geodetic networks, it is necessary to transform the coordinates of points from one system to another. Two methods are most common read more here.

Keywords: variable analytical; one system; system another; application complex ... See more keywords
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Analysis and Design of Nonlinear Tuned Mass Damper Based on Complex Variable Averaging Method

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Published in 2023 at "Applied Sciences"

DOI: 10.3390/app13106287

Abstract: As one of the most representative passive control devices, tuned mass dampers (TMDs) are widely used in civil engineering, aerospace, machinery, and other fields, after years of research and improvement. However, due to their large… read more here.

Keywords: tuned mass; averaging method; design; variable averaging ... See more keywords
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Outer Synchronization of Complex-Variable Networks with Complex Coupling via Impulsive Pinning Control

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Published in 2021 at "Mathematics"

DOI: 10.3390/math9172110

Abstract: In this paper, outer synchronization of complex-variable networks with complex coupling is considered. Sufficient conditions for achieving outer synchronization using static impulsive pinning controllers are first derived according to the Lyapunov function method and stability… read more here.

Keywords: synchronization complex; complex variable; variable networks; outer synchronization ... See more keywords
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A Note on Degenerate Euler and Bernoulli Polynomials of Complex Variable

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Published in 2019 at "Symmetry"

DOI: 10.3390/sym11091168

Abstract: Recently, the so-called new type Euler polynomials have been studied without considering Euler polynomials of a complex variable. Here we study degenerate versions of these new type Euler polynomials. This has been done by considering… read more here.

Keywords: euler; bernoulli polynomials; complex variable; euler polynomials ... See more keywords