Results 51 to 60 of about 7,904,698 (368)
Improved Bayesian Network-Based Risk Model and Its Application in Disaster Risk Assessment
International Journal of Disaster Risk Science, 2018 The application of Bayesian network (BN) theory in risk assessment is an emerging trend. But in cases where data are incomplete and variables are mutually related, its application is restricted. To overcome these problems, an improved BN assessment model
Ming Li, Mei Hong, Ren Zhang
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Numerical simulations of sunspots [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractThe origin, structure and evolution of sunspots are investigated using a numerical model. The compressible MHD equations are solved with physical parameter values that approximate the top layer of the solar convection zone. A three dimensional (3D) numerical code is used to solve the set of equations in cylindrical geometry, with the numerical ...
Alistair Rucklidge +2 more
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A fast direct numerical simulation method for characterising hydraulic roughness [PDF]
Journal of Fluid Mechanics, 2015 We describe a fast direct numerical simulation (DNS) method that promises to directly characterise the hydraulic roughness of any given rough surface, from the hydraulically smooth to the fully rough regime.
D. Chung +4 more
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Threshold Dynamics of a Huanglongbing Model with Logistic Growth in Periodic Environments
Abstract and Applied Analysis, 2014 We analyze the impact of seasonal activity of psyllid on the dynamics of Huanglongbing (HLB) infection. A new model about HLB transmission with Logistic growth in psyllid insect vectors and periodic coefficients has been investigated.
Jianping Wang +3 more
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Plants, 2023 Ageratum conyzoides (A. conyzoides) is commonly found or intentionally planted in citrus orchards due to its ability to provide habitat and breeding grounds for the natural enemies of citrus pests. This study aims to expand from a switching Huanglongbing
Ying Wang +3 more
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Mathematical and Computational Applications, 2020 In this paper, we introduce a novel localized collocation solver for two-dimensional (2D) phononic crystal analysis. In the proposed collocation solver, the displacement at each node is expressed as a linear combination of T-complete functions in each ...
Zhuo-Jia Fu +3 more
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Geocarto InternationalMost U-shaped convolutional neural network (CNN) methods have the problems of insufficient feature extraction and fail to fully utilize global/multi-scale context information, which makes it difficult to distinguish similar objects and shadow occluded ...
Ning Li, Xiaopeng Yu, Miao Yu
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Mathematics, 2022 In this research, we investigate an optimal control problem governed by elliptic PDEs with Dirichlet boundary conditions on complex connected domains, which can be utilized to model the cooling process of concrete dam pouring.
Mengya Su, Liuqing Xie, Zhiyue Zhang
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Mean-field concept and direct numerical simulations of rotating magnetoconvection and the geodynamo [PDF]
, 2006 A comparison is made between mean-field models and direct numerical simulations of rotating magnetoconvection and the geodynamo. The mean-field coefficients are calculated with the fluid velocity taken from the direct numerical simulations. The magnetic fields resulting from mean-field models are then compared with the mean magnetic field from the ...
arxiv +1 more source
Numerical simulations in particle physics [PDF]
Reports on Progress in Physics, 1993 Numerical simulations have become an important tool to understand and predict non-perturbative phenomena in particle physics. In this article we attempt to present a general overview over the field. First, the basic concepts of lattice gauge theories are described, including a discussion of currently used algorithms and the reconstruction of continuum ...
Karsch, Frithjof, Laermann, Edwin
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