Results 21 to 30 of about 50,256 (293)
Advanced analytic treatment and efficient computation of the diffraction integrals in the extended Nijboer-Zernike theory [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 The computational methods for the diffraction integrals that occur in the Extended Nijboer-Zernike (ENZ-) approach to circular, aberrated, defocused optical systems are reviewed and updated.
van Haver S., Janssen A. J. E. M.
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Analytical Model of Spread of Epidemics in Open Finite Regions [PDF]
IEEE Access, 2017 Epidemic dynamics, a kind of biological mechanisms describing microorganism propagation within populations, can inspire a wide range of novel designs of engineering technologies, such as advanced wireless communication and networking, global immunization on complex systems, and so on.
Daxin Tian +4 more
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Modeling the underlying dynamics of the spread of crime.
PLoS ONE, 2014 The spread of crime is a complex, dynamic process that calls for a systems level approach. Here, we build and analyze a series of dynamical systems models of the spread of crime, imprisonment and recidivism, using only abstract transition parameters.
David McMillon +2 more
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Information Spreading Considering Repeated Judgment with Non-Recursion
Mathematics, 2022 This paper investigates an information spreading mechanism under repeated judgment. In a generalized model, we prove that given a necessary condition, information under repeated judgment can sustain continuous spreading.
Yufang Fu +3 more
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Beam loading compensation of traveling wave linacs through the time dependence of the rf drive
Physical Review Special Topics. Accelerators and Beams, 2011 Beam loading in traveling-wave linear accelerating structures leads to unacceptable spread of particle energies across an extended train of bunched particles due to beam-induced field and dispersion. Methods for modulating the rf power driving linacs are
Nathan Towne, James Rose
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A Study of Shigellosis Bacteria disease Model with Awareness Effects
Ibn Al-Haitham Journal for Pure and Applied Sciences, 2021 In this paper, a mathematical model is proposed and studied to describe the spread of shigellosis disease in the population community. We consider it divided into four classes namely: the 1st class consists of unaware susceptible individuals, 2nd class ...
Watheq Ibrahim Jasim +1 more
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The asymptotic nature of the analytic spread [PDF]
Mathematical Proceedings of the Cambridge Philosophical Society, 1979 In (3), corollary, p. 373) Burch gives the following inequality for the analytic spread l(I) of an ideal I of a noetherian local ring (R, m):In this paper we shall improve this by showing that the number min depth (R/In) may be replaced by the asymptotic value of depth (R/In) for large n (which exists) (see Section (2)). By its definition (see (6), def.
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Dynamics of SIQR epidemic model with fractional order derivative
Partial Differential Equations in Applied Mathematics, 2022 The dynamics of COVID-19 (Coronavirus Disease-2019) transmission are described using a fractional order SIQR model. The stability analysis of the model is performed.
Subrata Paul +3 more
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mmSight: A Robust Millimeter-Wave Near-Field SAR Imaging Algorithm
Applied Sciences, 2022 Millimeter-wave SAR (Synthetic Aperture Radar) imaging is widely studied as a common means of RF (Radio Frequency) imaging, but there are problems of the ghost image in Sparsely-Sampled cases and the projection of multiple targets at different distances.
Zhanjun Hao +4 more
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Analytical Modelling of the Spread of Disease in Confined and Crowded Spaces [PDF]
Scientific Reports, 2014 AbstractSince 1927 and until recently, most models describing the spread of disease have been of compartmental type, based on the assumption that populations are homogeneous and well-mixed. Recent models have utilised agent-based models and complex networks to explicitly study heterogeneous interaction patterns, but this leads to an increasing ...
Gosce, Lara +2 more
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