Results 1 to 10 of about 9,119,744 (254)

Indoor Positioning System Using Magnetic Field Map Navigation and an Encoder System

open access: yesSensors, 2017
In the indoor environment, variation of the magnetic field is caused by building structures, and magnetic field map navigation is based on this feature. In order to estimate position using this navigation, a three-axis magnetic field must be measured at ...
Han-Sol Kim, Woojin Seo, Kwang-Ryul Baek
doaj   +3 more sources

Artificial Potential Field with Discrete Map Transformation for Feasible Indoor Path Planning

open access: yesApplied Sciences, 2020
This work considers the path planning problem of personal mobility vehicle (PMV) for indoor navigation using the Artificial Potential Field (APF) method.
Muhammad Zulfaqar Azmi, Toshio Ito
doaj   +3 more sources

Compression and noise reduction of field maps [PDF]

open access: yesPhysical Review Accelerators and Beams, 2018
Errors from discretization and large data volume of field maps is a concern for beam dynamics simulations with respect to achievable accuracy and to the required amount of time.
X. Du, L. Groening
doaj   +3 more sources

Cortical field maps across human sensory cortex

open access: yesFrontiers in Computational Neuroscience, 2023
Cortical processing pathways for sensory information in the mammalian brain tend to be organized into topographical representations that encode various fundamental sensory dimensions.
Alyssa A. Brewer, Brian Barton
doaj   +1 more source

Early evaluation of adjuvant effects on topramezone efficacy under different temperature conditions using chlorophyll fluorescence tests

open access: yesFrontiers in Plant Science, 2022
Proper selection of adjuvant applications is an important strategy to enhance herbicide efficacy and reduce active ingredient input especially under adverse environmental conditions.
Jinwei Zhang   +5 more
doaj   +1 more source

Noise-Resilient Depth Estimation for Light Field Images Using Focal Stack and FFT Analysis

open access: yesSensors, 2022
Depth estimation for light field images is essential for applications such as light field image compression, reconstructing perspective views and 3D reconstruction.
Rishabh Sharma, Stuart Perry, Eva Cheng
doaj   +1 more source

Using synthetic MR images for distortion correction

open access: yesDevelopmental Cognitive Neuroscience, 2023
Functional MRI (fMRI) data acquired using echo-planar imaging (EPI) are highly distorted by magnetic field inhomogeneities. Distortion and differences in image contrast between EPI and T1-weighted and T2-weighted (T1w/T2w) images makes their alignment a ...
David F. Montez   +21 more
doaj   +1 more source

Metric Map Generation for Autonomous Field Operations

open access: yesAgronomy, 2020
Advanced systems for manned and/or agricultural vehicles—such as systems for auto-steering, navigation-adding, and autonomous route planning—require new capabilities in terms of the internal representation for the autonomous system of the ...
Kun Zhou   +5 more
doaj   +1 more source

Seiberg-Witten map for D-branes in large R-R field background

open access: yesJournal of High Energy Physics, 2021
We obtain a Seiberg-Witten map for the gauge sector of multiple Dp-branes in a large R-R (p − 1)-form field background up to the first-order in the inverse R-R field background.
Chen-Te Ma
doaj   +1 more source

The map of permanent natural electric field of Russia

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2020
The article describes a direct connection between the natural electric potential and the dynamics of the temperature of volcanoes using the examples of observation of the natural electric potential on the surfaces of volcanoes.
A. N. Dmitriev
doaj   +1 more source

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