Results 81 to 90 of about 49,392 (306)

Traffic Flow Data Collection Methods During Wildfire Evacuation

open access: yesFire and Materials, EarlyView.
ABSTRACT With climate change and urbanisation increasing wildfire risk in the wildland–urban interface (WUI), enhancing community evacuation preparedness is crucial. This study evaluates different data collection methods for measuring traffic flows during a community wildfire evacuation drill in Roxborough Park, Colorado, in June 2024.
Ann‐Kristin Dugstad   +9 more
wiley   +1 more source

Path Navigation for Multi-Agent Flight System Based on Distributed Model Predictive Control and Reinforcement Learning

open access: yesApplied Sciences
The continuous change in formation configurations offers significant potential for formation flight. However, existing methods neglect the potential of autonomous navigation and learning ability based on environmental conditions, which would limit ...
Chao Kang   +3 more
doaj   +1 more source

A Novel Collision Avoidance Logic for Unmanned Aerial Vehicles Using Real-Time Trajectory Planning [PDF]

open access: yes, 2014
An effective collision avoidance logic should prevent collision without excessive alerting. This requirement would be even more stringent for an automatic collision avoidance logic, which is probably required by Unmanned Aerial Vehicles to mitigate ...
Lai, Chi Kin
core  

Hole transporting materials in inverted flexible perovskite solar cells: Challenges, progress, and perspectives

open access: yesFlexMat, EarlyView.
The buried interface is a critical determinant of efficiency and stability in inverted flexible perovskite solar cells (IFPSCs). This Perspective summarizes advances in hole transporting materials for IFPSCs, including polymeric, small‐molecule, inorganic, and hybrid systems, and discusses the prospects and feasibility of emerging molecular design and ...
Xianglang Sun, Jiawei Leng, Zhong'an Li
wiley   +1 more source

Genomic selection for nitrogen use efficiency in perennial ryegrass (Lolium perenne L.) under field conditions

open access: yesGrassland Research, EarlyView.
There is genetic variation in ryegrass for the ability to respond to nitrogen fertilizer, Breeding nitrogen use efficient cultivars can increase farm profitability and sustainability. Abstract Background Improving the nitrogen use efficiency (NUE) of pastures has the benefit of reducing costs of production and reducing nitrogen loss to the environment.
Junping Wang   +6 more
wiley   +1 more source

Mission Reliability Evaluation Method of UAV Swarms Based on an Improved DBN

open access: yesDrones
This paper addresses the dynamic mission reliability evaluation of unmanned aerial vehicle (UAV) swarms. To handle the inherent complexity of swarm systems and the limitations of existing static evaluation methods, a new approach based on an improved ...
Yan Liu, Pengtao Zhang, Zheng Fang
doaj   +1 more source

Development of a co-axial tri-rotor UAV

open access: yes, 2009
This paper discusses the initial design requirements and development of a Small Unmanned Aerial Vehicle (SUAV), sometimes referred to as a Miniature Aerial Vehicle (MAV) or Micro Unmanned Aerial Vehicle (?UAV) as the backdrop to an entry for the MoD ...
Prior, Stephen D.   +4 more
core  

A pan-tilt camera Fuzzy vision controller on an unmanned aerial vehicle

open access: yes, 2009
is paper presents an implementation of two Fuzzy Logic controllers working in parallel for a pan-tilt camera platform on an UAV. This implementation uses a basic Lucas-Kanade tracker algorithm, which sends information about the error between the center ...
Campoy Cervera, Pascual   +10 more
core   +1 more source

Enviromics crosstalk between internal and external plant environments for enhanced adaptation and de novo domestication

open access: yesiMeta, EarlyView.
Climate change demands accelerated plant adaptation and de novo domestication. Yet current enviromics focuses disproportionately on external environments, neglecting internal dynamics—gene expression, metabolic flux, and signal transduction—within predictive envirotyping frameworks.
Lin‐An Zhang   +8 more
wiley   +1 more source

Conventional to Deep Learning Methods for Hyperspectral Unmixing: A Review

open access: yesRemote Sensing
Hyperspectral images often contain many mixed pixels, primarily resulting from their inherent complexity and low spatial resolution. To enhance surface classification and improve sub-pixel target detection accuracy, hyperspectral unmixing technology has ...
Jinlin Zou, Hongwei Qu, Peng Zhang
doaj   +1 more source

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