Results 101 to 110 of about 617,338 (368)

Definition of contact stress in friction units on the basis of the acoustic emission method

open access: yesAviation, 2009
The following results of acoustic emission signals researches were obtained during the change in contact stress. It is shown that the theoretical regularity of change in average level of the acoustic emission resulting signal at contact stress has a ...
Sergay Filonenko   +2 more
doaj   +1 more source

Story Generation and Aviation Incident Representation [PDF]

open access: yesarXiv, 2018
This working note discusses the topic of story generation, with a view to identifying the knowledge required to understand aviation incident narratives (which have structural similarities to stories), following the premise that to understand aviation incidents, one should at least be able to generate examples of them.
arxiv  

When to regulate airports: A simple rule [PDF]

open access: yes
Landing fees at airports are regulated almost all over the world since airports are assumed to abuse their market power. We find that monopolistic airports have an incentive to restrain landing fees when they generate additional non-aviation revenues and
Kratzsch, Uwe, Sieg, Gernot
core  

Aircrew fatigue management in the New Zealand aviation industry : a thesis presented in partial fulfilment of the requirements for the degree of Master of Aviation at Massey University [PDF]

open access: yes, 2005
In the past two decades, fatigue has been widely studied and has proven scientifically to be a threat to flight operations and aircrews, as evidenced in disastrous aviation accidents.
Ratieta, Denise Kuraem
core  

Impacts of geopolitics and policy on Latin American biodiversity and water resources

open access: yesAgribusiness, EarlyView.
Abstract Latin America is a major agricultural producer with important natural resources. Efforts have been made to protect sensitive areas but are hindered by agricultural trade disruptions outside the control of individual countries due to globally integrated crop markets.
Jerome Dumortier   +2 more
wiley   +1 more source

Research of remotely piloted vehicles for cargo transportation

open access: yesAviation, 2016
Remotely piloted vehicles (RPV) are used in various fields. The article analyses RPV usage for aerial cargo transportation. The first part is an overview of RPVs used across the world as cargo transportation, their examples and prototypes, as well as the
Ugnius Ragauskas   +2 more
doaj   +1 more source

Robust Reinforcement Learning Control Framework for a Quadrotor Unmanned Aerial Vehicle Using Critic Neural Network

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai   +3 more
wiley   +1 more source

Aircraft control law reconfiguration

open access: yesAviation, 2015
The synthesis of MIMO fault-tolerant control systems under control failures is considered. The solution is written in an analytical form, which makes it possible to synthesize simplified circuit implementations and adjust coefficients of the fault ...
Vladislav Kosyanchuk   +2 more
doaj   +1 more source

Pathways to net-zero emissions from aviation

open access: yesNature Sustainability, 2023
Candelaria Bergero   +5 more
semanticscholar   +1 more source

Real‐Time Motion Generation for Robot Manipulators in Complex Dynamic Environments

open access: yesAdvanced Intelligent Systems, EarlyView.
A motion generation method for robot manipulators in complex dynamic environments is presented. The method integrates global motion planning with local obstacle avoidance, ensuring continuous movement toward dynamically measured target poses. An online distance calculation algorithm is developed, and a collision‐free motion generator is proposed that ...
Tianyu Zhang   +6 more
wiley   +1 more source

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