Results 61 to 70 of about 15,285 (203)

The performance of drones and artificial intelligence for monitoring sage‐grouse at leks

open access: yesWildlife Biology, EarlyView.
Accurately monitoring sage‐grouse populations is critical for conservation, yet traditional ground‐based visual surveys face challenges in scalability and consistency, prompting the exploration of innovative drone‐based methodologies enhanced by artificial intelligence.
Lance B. McNew   +2 more
wiley   +1 more source

Drone‐based radiotelemetry and imagery systems provide an advantage over traditional techniques for estimating survival of dependent juveniles

open access: yesWildlife Society Bulletin, EarlyView.
We used drone‐based radiotelemetry and multispectral imagery to estimate detection and survival probabilities of blue‐winged teal broods in Saskatchewan, Canada. Weekly brood survival probabilities, estimated via Cormack‐Jolly‐Seber models, increased with age and were comparable between drone methods.
Grant A. Rhodes   +5 more
wiley   +1 more source

Using unmanned aerial vehicles (drones) to improve access to blood in low‐ and middle‐income countries: Current challenges and opportunities

open access: yesVox Sanguinis, EarlyView.
Abstract Blood transfusion is life‐saving for patients in emergencies, but low‐ and middle‐income countries (LMICs) often face a severe shortage of banked blood. Establishing blood banks in rural areas presents substantial logistical and economic challenges for many LMICs.
Suvro Sankha Datta   +4 more
wiley   +1 more source

Perancangan dan Implementasi Sistem Pengaturan Optimal LQR untuk Menjaga Kestabilan Hover pada Quadcopter

open access: yesJurnal Teknik ITS, 2012
Quadcopter adalah pesawat terbang yang memiliki potensi untuk lepas landas, hover, terbang manuver, dan mendarat bahkan di daerah kecil. Seiring dengan perkembangan teknologi modern, saat ini quadcopter banyak digunakan untuk pengawasan area, pengambilan
Kardono Kardono   +2 more
doaj  

Sistem Pendaratan Otomatis pada Quadcopter menggunakan Sliding Mode Controller

open access: yesJurnal Rekayasa Elektrika, 2020
A quadcopter has a very nonlinear system characteristic that is influenced by unexpected disturbances such as the influence of wind that reflected off the ground when taking off or landing.
Zindhu Maulana Ahmad Putra   +2 more
doaj   +1 more source

Modeling and Nonlinear Control of a Quadcopter for Stabilization and Trajectory Tracking

open access: yesJournal of Engineering, 2022
This paper presents an adequate mathematical representation of a quadcopter’s system dynamics and effective control techniques. A quadcopter is an unmanned aerial vehicle (UAV) that is able to do vertical take-off and landing.
Ademola Abdulkareem   +3 more
doaj   +1 more source

The Franciscana (Pontoporia blainvillei) in the Northern Limit of the FMA II: Strandings and Habitat Use in Ilha Grande Bay

open access: yesMarine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT The presence of the franciscana (Pontoporia blainvillei) at the northern limit of the FMA II was investigated using a range of methods, including monitoring of strandings, boat surveys, and passive acoustic monitoring (PAM). Franciscana strandings were recorded within the distributional gap between Macaé (22°55′ S) and Ilha Grande (23°09′ S ...
Alexandre F. Azevedo   +10 more
wiley   +1 more source

Design and Implementation of a Dual-Axis Tilting Quadcopter

open access: yesRobotics, 2018
Standard quadcopters are popular largely because of their mechanical simplicity relative to other hovering aircraft, low cost and minimum operator involvement.
Ali Bin Junaid   +4 more
doaj   +1 more source

Multi‐Metric Monitoring: Comparing Occupancy and Abundance Based Metric Sensitivity for Detecting Threatened Species Responses to Environmental Change

open access: yesGlobal Change Biology Communications, Volume 1, Issue 2, June 2026.
Abundance and occupancy provide complementary but non‐equivalent signals of threatened species change. Here, their relationship was nonlinear and responses to environmental change were context dependent, showing that no single metric captures all population responses and that combining both can better inform conservation action under global change ...
Tim S. Jessop   +7 more
wiley   +1 more source

Quadcopter Aggressive Maneuvers along Singular Configurations: An Energy-Quaternion Based Approach

open access: yesJournal of Control Science and Engineering, 2016
Automatic aggressive maneuvers with quadcopters are regarded as a highly challenging control problem. The aim is to tackle the singularities that exist in a vertical looping maneuver. Modeling singularities are resolved by writing the equations-of-motion
Ayman A. El-Badawy, Mohamed A. Bakr
doaj   +1 more source

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