Results 21 to 30 of about 4,994 (208)

Role Of Financial Intermediaries in Shadow Schemes: Risk-Based Approach [PDF]

open access: yesFinancial Markets, Institutions and Risks, 2021
The article is devoted to the study of the role of financial intermediaries in the shadow sector of the economy. The main purpose of the article is to analyze and systematize the work of scientists to assess the risk of shadow transactions with the ...
Inna Tiutiunyk, Yuliia Humenna
doaj   +1 more source

A Correction Method of NDVI Topographic Shadow Effect for Rugged Terrain

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
The influence of solar altitude and azimuth angles makes shadows prevalent in remote sensing images of rugged terrains. Consequently, the normalized difference vegetation index (NDVI) of the shadow areas is much lower than that of sunlit areas—a ...
Xu Yang   +5 more
doaj   +1 more source

Compensation Method for Shadow Effect of Mine Ultrasonic Anemometer

open access: yesIEEE Access, 2021
The ultrasonic anemometer is widely used in the field of wind speed measurement in the coal mine. To compensate for the error of wind speed caused by the shadow effect, we propose a method based on kernel extreme learning machine combined with particle ...
Zhenguan Cao   +4 more
doaj   +1 more source

Improvement of Turbine Inertia Compensation in Wind Turbine Emulators using Kalman Filter [PDF]

open access: yesInternational Journal of Research and Technology in Electrical Industry, 2023
In this paper, a 3.1kW DC motor is used to simulate the static and dynamic behavior of a horizontal axis wind turbine. The effect of the difference between the wind turbine's inertia and DC motor on the dynamic behavior of the system, torque oscillation ...
Mansour Rafiee   +2 more
doaj   +1 more source

Reducing false alarm rates during change detection by modeling relief, shade and shadow of multi-temporal imagery. [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Change detection on the basis of multi-temporal imagery may lead to false alarms when the image has changed, whereas the scene has not. Geometric image differerences in an unchanged scene may be due to relief displacement, caused by diferent camera ...
B. Gorte, C. van der Sande
doaj   +1 more source

Image Segmentation of UAV Fruit Tree Canopy in a Natural Illumination Environment

open access: yesAgriculture, 2022
Obtaining canopy area, crown width, position, and other information from UAV aerial images and adjusting spray parameters in real-time according to this information is an important way to achieve precise pesticide application in orchards.
Zhongao Lu   +4 more
doaj   +1 more source

Photosynthesis and respiration of plants from the Gulf of Gdańsk [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1991
Photosynthesis-light intensity relationship in nanoplankton, net plankton, and bentic plants from the Gulf of Gdańsk were determined and the relevant curves plotted.
A. Latała
doaj   +3 more sources

Airborne InSAR Interferometric Phase Analysis, Unwrapping Method, and Fast Implementation in Low Coherence Areas

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Due to synthetic aperture radar (SAR) imaging geometry and scattering characteristics, there are some low coherence areas in interferometric SAR (InSAR) data, such as shadow and water, where the interferometric phase is discontinuous.
Fangfang Li   +3 more
doaj   +1 more source

Radiometric Compensation for Occluded Crops Imaged Using High-Spatial-Resolution Unmanned Aerial Vehicle System

open access: yesAgriculture, 2023
Crop characterization is considered a prerequisite to devising effective strategies for ensuring successful implementation of sustainable agricultural management strategies.
Naledzani Ndou   +3 more
doaj   +1 more source

Extended State Observer-Based Nonlinear Terminal Sliding Mode Control With Feedforward Compensation for Lower Extremity Exoskeleton

open access: yesIEEE Access, 2022
This paper presents and experimentally demonstrates an extended state observer (ESO) -based nonlinear terminal sliding mode control strategy with feedforward compensation (ESO-F-NTSMC) for lower extremity exoskeleton.
Yi Long, Yajun Peng
doaj   +1 more source

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