Results 71 to 80 of about 199,767 (264)
Unmanned Aircraft Systems: A Latin American Review and Analysis from the Colombian Context
Applied Sciences, 2023 The usage of unmanned aircraft systems to complete routine, commercial, and industrial tasks has increased throughout the world, evidencing better profitability and reducing risks for operators.
Gabriel J. Sánchez-Zuluaga +4 more
doaj +1 more source
Vertical Merger Enforcement Actions: 1994–April 2020 [PDF]
, 2020 We have revised our earlier listing of vertical merger enforcement actions by the Department of Justice and Federal Trade Commission since 1994. This revised listing includes 66 vertical matters beginning in 1994 through April 2020.
Culley, Daniel P., Salop, Steven C.
core +1 more source
Advances in Triboelectric Nanogenerators With Rotating Structure
Carbon Energy, EarlyView.The rotating TENG has been widely studied for its superiorities of simple structure, high efficiency, and stable output. This review introduced the four different principles of rotating TENG and offered a thorough summary for performance and application research through three‐level classification. Importantly, the current existing problems, challenges,
Chuguo Zhang +4 more
wiley +1 more source
Detection of irrigation inhomogeneities in an olive grove using the NDRE vegetation index obtained from UAV images [PDF]
, 2019 We have developed a simple photogrammetric method to identify heterogeneous areas of irrigated olive groves and vineyard crops using a commercial multispectral camera mounted on an unmanned aerial vehicle (UAV).
Jorge Sánchez, Juan +2 more
core +2 more sources
Vision-based Aircraft Detection Technologies for Unmanned Aerial Vehicles [PDF]
, 2020 La detección de aeronaves es un problema complejo con multitud de aplicaciones en el ámbito de los vehículos aéreos no tripulados (UAVs), entre las que destacan los sistemas de detección y evasión (DAA), los sistemas de evasión de colisiones para enjambres de UAVs y los sistemas anti UAVs.
openaire +2 more sources
Energy Science &Engineering, EarlyView.This paper aims to provide a robust design approach for HAWTs operating in shear flow. This study fills a critical research gap by integrating BEM and vortex theories for blade design in non‐homogeneous inflow conditions. The authors of the paper made an effort to develop and test an experimentally unsophisticated model of a turbine working in shear ...
Agnieszka Dorota Woźniak +2 more
wiley +1 more source
Unmanned Helicopter Type Aircraft for the Pesticides and Fertilizers Application
Сельскохозяйственные машины и технологии, 2020 Digital agricultural production is based on robotic agricultural technologies for the use of pesticides and fertilizers using unmanned aerial systems, which are based on unmanned aerial vehicles for monitoring agricultural land, the pesticides ...
L. A. Marchenko +4 more
doaj +1 more source
A V-Diagram for the Design of Integrated Health Management for Unmanned Aerial Systems [PDF]
, 2015 Designing Integrated Vehicle Health Management (IVHM) for Unmanned Aerial Systems (UAS) is inherently complex. UAS are a system of systems (SoS) and IVHM is a product-service, thus the designer has to take into account many factors, such as: the design ...
BAE Systems +5 more
core
IEEE Access, 2020 With the rapid expansion in the number of Unmanned Aircraft Vehicles (UAVs) available and the development of modern technologies, the commercial applications of UAVs in urban areas, such as urban remote sensing (RS), express services, urban road traffic ...
Chenchen Xu +4 more
semanticscholar +1 more source
HyLPD Digital Twin Control for UAV Stability in High‐Wind Conditions
Optimal Control Applications and Methods, EarlyView.This work introduces a novel HyLPD, a hybrid control framework combining Linear Quadratic Regulator (LQR) for baseline stability and Deep Deterministic Policy Gradient (DDPG) for adaptive compensation, tailored for UAVs under high‐wind conditions.
Cara Rose +2 more
wiley +1 more source