Results 51 to 60 of about 13,840,373 (231)

Climate‐Driven Mangrove Dieback and Recovery: A Case Study in Albert and Leichhardt Rivers, Australia

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Cycles of dieback and recovery drove mangrove forest dynamics at the Albert and Leichhardt Rivers (Gulf of Carpentaria, Queensland, Australia) over 36 years (1987–2023). Landward margins were the most affected by reduced tidal inundation when the alignment of low lunar declination suppressed tidal range and extreme El Niño phases lowered mean sea level.
Rogerio Victor S. Gonçalves   +4 more
wiley   +1 more source

Design of an Optimal Fuzzy Controller for Hover mode of Finite Degree of Freedom Unmanned Helicopter [PDF]

open access: yesJournal of Intelligent Procedures in Electrical Technology, 2012
A helicopter has nonlinear dynamics and it’s a multivariable system. A helicopter is an unstable plant with high level of interaction between some of its variables.
Sina Ameli   +2 more
doaj  

Experimental research of single - rotor helicopter unintentional yaw rotation

open access: yesНаучный вестник МГТУ ГА, 2020
Aviation accidents related to unintentional rotation may periodically occur while flying single-rotor helicopters. On-time and correct actions may help the pilot to find the way out of this hazardous situation.
V. V. Efimov   +3 more
doaj   +1 more source

Fusion or Confusion? Assessing the Impact of Visible‐Thermal Image Fusion for Automated Wildlife Detection

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
This study evaluates the performances of synchronous aerial visible (VIS) and thermal infrared (TIR) imagery for detecting great blue heron (Ardea herodias) nests and individuals using a YOLO11n model. VIS and TIR images were automatically aligned using deep learning, and both early and late fusion approaches were tested.
Camille Dionne‐Pierre   +6 more
wiley   +1 more source

Dynamical Neural Models in Experimental Identification of Helicopter Educational Model—Methodology Proposal

open access: yesApplied Sciences
A design of methodology for experimental identification of nonlinear dynamical systems using feed-forward MLP neural networks as dynamical neural models is presented in this paper.
Tomáš Tkáčik, Anna Jadlovská
doaj   +1 more source

Cannabis Agritourism and Local Pathways Toward Sustainable Development Goals in Northern California

open access: yesSustainable Development, EarlyView.
ABSTRACT Recent acceleration in global cannabis legalization offers a new context for examining the multiscale links between agritourism, sustainability, and international policy frameworks. In this study, Responsible Tourism is used to conceptualize cannabis agritourism in Northern California's Emerald Triangle as a strategy that may advance targets ...
Susan Dupej   +2 more
wiley   +1 more source

Helicopter tail rotor orthogonal blade vortex interaction [PDF]

open access: yes, 2004
The aerodynamic operating environment of the helicopter is particularly complex and, to some extent, dominated by the vortices trailed from the main and tail rotors. These vortices not only determine the form of the induced flow field but also interact
Marshall, J.S.   +7 more
core   +1 more source

Efficient Helicopter-Satellite Communication Scheme Based on Check-Hybrid LDPC Coding

open access: yesTsinghua Science and Technology, 2018
When implementing helicopter-satellite communications, periodical interruption of the received signal is a challenging problem because the communication antenna is intermittently blocked by the rotating blades of the helicopter.
Ping Wang, Liuguo Yin, Jianhua Lu
doaj   +1 more source

Resource reallocation across successive systemic innovations: How Rolls‐Royce shaped the evolution of the turbojet, turboprop, and turbofan

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Despite the importance of resource reallocation in shaping a variety of strategic outcomes, strategy scholars have paid only limited attention to the processes by which firms reallocate their resources across successive systemic innovations.
Gino Cattani   +2 more
wiley   +1 more source

Central Bank Digital Currencies, Financial Inclusion, and Privacy: A Normative Perspective

open access: yesSouthern Economic Journal, EarlyView.
ABSTRACT Central bank digital currencies (CBDCs) are a digital form of a nation's money, issued by its central bank. As opposed to other forms of digital money, such as electronic bank balances or cryptocurrencies, they are centrally managed legal tender.
Andrew Allison, Alexander William Salter
wiley   +1 more source

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