Results 21 to 30 of about 1,710,737 (289)

Improved Bayesian Network-Based Risk Model and Its Application in Disaster Risk Assessment

open access: yesInternational 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
doaj   +1 more source

CMPF-UNet: a ConvNeXt multi-scale pyramid fusion U-shaped network for multi-category segmentation of remote sensing images

open access: yesGeocarto International
Most 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
doaj   +1 more source

Threshold Dynamics of a Huanglongbing Model with Logistic Growth in Periodic Environments

open access: yesAbstract 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
doaj   +1 more source

Numerical simulation of electrocardiograms

open access: yes, 2012
This chapter presents a concise overview of various mathematical and numerical problems raised by the simulation of electrocardiograms (ECGs). A model for the propagation of the electrical activation in the heart and in the torso is proposed. Some of its mathematical properties are analyzed.
Boulakia, Muriel   +3 more
openaire   +3 more sources

Steel Surface Defect Detection Algorithm Based on Improved YOLOv8 Modeling

open access: yesApplied Sciences
Detecting steel defects is a vital process in industrial production, but traditional methods suffer from poor feature extraction and low detection accuracy.
Miao Peng, Sue Bai, Yang Lu
doaj   +1 more source

Modeling Study of the Effects of Ageratum conyzoides on the Transmission and Control of Citrus Huanglongbing

open access: yesPlants, 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
doaj   +1 more source

A Localized Collocation Solver Based on T-Complete Functions for Anti-Plane Transverse Elastic Wave Propagation Analysis in 2D Phononic Crystals

open access: yesMathematical 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
doaj   +1 more source

Numerical simulation of Faraday waves

open access: yes, 2008
We simulate numerically the full dynamics of Faraday waves in three dimensions for two incompressible and immiscible viscous fluids. The Navier-Stokes equations are solved using a finite-difference projection method coupled with a front-tracking method ...
DAMIR JURIC   +3 more
core   +3 more sources

Global Satellite Retrievals of the Near-Surface Atmospheric Vapor Pressure Deficit from AMSR-E and AMSR2

open access: yesRemote Sensing, 2018
Near-surface atmospheric Vapor Pressure Deficit (VPD) is a key environmental variable affecting vegetation water stress, evapotranspiration, and atmospheric moisture demand.
Jinyang Du   +5 more
doaj   +1 more source

Numerical Simulation on Shoreline Change in Western Region of Badung Regency, Bali, Indonesia [PDF]

open access: yes, 2014
Shoreline change is considered the most dynamic processes in coastal region. Coastal erosion is a global problem where 70% beaches around the world are recessional. Almost all coastal area in Bali is potential to suffer from erosion.
Asai, K. (Koji)   +1 more
core  

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