Results 21 to 30 of about 51,029,080 (298)

Efficient dead pine tree detecting method in the Forest damaged by pine wood nematode (Bursaphelenchus xylophilus) through utilizing unmanned aerial vehicles and deep learning-based object detection techniques

open access: yesForest Science and Technology, 2022
Pine wood nematode (Bursaphelenchus xylophilus) is an invasive pathogen in South Korea, where it has caused pine wilt disease (PWD) with extremely high mortality of native pine species (Pinus densiflora, Pinus thunbergii, and Pinus koraiensis). Since the
Wontaek Lim   +4 more
doaj   +1 more source

Spatio-Temporal Estimation of Biomass Growth in Rice Using Canopy Surface Model from Unmanned Aerial Vehicle Images

open access: yesRemote Sensing, 2021
The awareness of spatial and temporal variations in site-specific crop parameters, such as aboveground biomass (total dry weight: (TDW), plant length (PL) and leaf area index (LAI), help in formulating appropriate management decisions.
Clement Oppong Peprah   +5 more
doaj   +1 more source

Surface profile prediction and analysis applied to turning process [PDF]

open access: yes, 2008
An approach for the prediction of surface profile in turning process using Radial Basis Function (RBF) neural networks is presented. The input parameters of the RBF networks are cutting speed, depth of cut and feed rate.
LU, Chen, COSTES, Jean-Philippe
core   +1 more source

A predictive surface profile model for turning based on spectral analysis [PDF]

open access: yes, 2013
This article presents a predictive approach of surface topography based on the FFT analysis of surface profiles. From a set of experimental machining tests, the parameters investigated are: feed per revolution, insert nose radius, depth of cut and ...
COSTES, Jean-Philippe
core   +1 more source

Documentation of Urn Graves of Knovíz Culture by RPAS

open access: yesGeoinformatics FCE CTU, 2016
This paper deals with the documentation, positional determination of urn graves of the Knovíz culture (1200 - 1000 BC), and geometric and positional determination of tumulus at the archaeological site located near the village Ctiněves, in the Usti region
Jaroslav Šedina   +2 more
doaj   +1 more source

Stereo Digital Particle Image Velocimetry Investigation of a Free Surface Mixing Layer [PDF]

open access: yes, 2005
Shear flows in the vicinity of a free surface are a problem with numerous applications, perhaps the most obvious being the wakes of seagoing surface vessels.
Dooley, Bradley Scott
core   +1 more source

Optimization of UAV-Based Imaging and Image Processing Orthomosaic and Point Cloud Approaches for Estimating Biomass in a Forage Crop

open access: yesRemote Sensing, 2022
Forage and field peas provide essential nutrients for livestock diets, and high-quality field peas can influence livestock health and reduce greenhouse gas emissions.
Worasit Sangjan   +2 more
doaj   +1 more source

Forest Height Estimation Approach Combining P-Band and X-Band Interferometric SAR Data

open access: yesRemote Sensing, 2022
Forest height is an essential parameter used to derive important information about forest ecosystems, such as forest above-ground biomass. In this article, a forest height estimation approach combining P-band and X-band interferometric synthetic aperture
Kunpeng Xu   +7 more
doaj   +1 more source

Surface roughness prediction in milling based on tool displacements [PDF]

open access: yes, 2011
In this paper, an experimental device using non-contact displacement sensors for the investigation of milling tool behaviour is presented. It enables the recording of high frequency tool vibrations during milling operations.
MOREAU, Vincent   +3 more
core   +1 more source

A Comparative Assessment of Multi-Source Generation of Digital Elevation Models for Fluvial Landscapes Characterization and Monitoring

open access: yesRemote Sensing, 2023
Imaging and measuring the Earth’s relief with sensors mounted upon unmanned aerial vehicles is an increasingly frequently used and promising method of remote sensing. In the context of fluvial geomorphology and its applications, e.g., landform mapping or
Paweł Sudra   +3 more
doaj   +1 more source

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