Results 81 to 90 of about 31,692 (257)

Monitoring active osprey nests with drones is more time efficient and less disturbing than conventional methods

Wildlife Biology, EarlyView.
Drones are used to monitor bird nesting sites at less accessible locations, such as on cliffs, human infrastructure, or within the tree canopy. While there are a growing number of studies documenting avian behavioral responses to various drones, there is a continued need to monitor taxa‐specific responses to different drone models. We explored both the
Natasha K. Murphy, Jared A. Elmore, Melanie R. Boudreau, Brian S. Dorr, Scott A. Rush   +4 more
wiley   +1 more source

Regulatory Requirements to Operate Spraying Drones

EDIS
This article aims to present and discuss regulatory require­ments for UAS for agricultural spraying applications to students, research scientists, Extension agents, growers and allied industry, consulting companies, and state agency personnel.
Wenhao Liu, Yiannis Ampatzidis
doaj   +3 more sources

The Law of Armed Conflict, the Use of Military Force, and the 2001 Authorization for Use of Military Force : Hearing Before the S. Committee on Armed Services, 113th Cong., May 16, 2013 (Statement by Professor Rosa Brooks, Geo. U. L. Center) [PDF]

, 2013
Mr. Chairman, almost twelve years have gone by since the passage of the AUMF on September 14, 2001. The war in Afghanistan–-the longest war in U.S. history--has begun to wind down.
Brooks, Rosa
core   +1 more source

A comparison of thermal drones and camera trap population estimates for Sitka black‐tailed deer in Alaska

Wildlife Biology, EarlyView.
One of the most difficult challenges for wildlife managers is reliably estimating wildlife populations. Camera traps combined with spatial capture–recapture (SCR) models are a popular tool for population estimation. They have limitations, however, including long data processing times.
Shannon P. Finnegan, Amael Hinojo, Sarah Monod, William A. Wall, Peter Olsen, Maximilian L. Allen   +5 more
wiley   +1 more source

Early detection of small- and medium-sized drones in complex environments

Drone Systems and Applications
Unmanned aerial vehicles, or drones, have become a weapon of choice on the modern battlefield. As military and civilian industries try to develop effective counter-drone systems, early detection of flying drones still poses multiple challenges to state ...
Mark Last
doaj   +1 more source

Service on Demand: Drone Base Stations Cruising in the Cellular Network

, 2017
In this paper, the deployment of drone base stations to provide higher performance in the cellular networks is analyzed. In particular, we investigate a new mobility model for drone base stations where they can move freely in the network, ignoring the ...
Ding, Ming, Fotouhi, Azade, Hassan, Mahbub   +2 more
core   +1 more source

Monitoring wildlife using long‐endurance solar‐electric UAVs

Wildlife Biology, EarlyView.
This report discusses the effectiveness of using small solar‐electric UAV (uncrewed aerial vehicles) for aerial wildlife monitoring. We review four years of aerial wildlife monitoring missions using a 5.5‐m wingspan, solar‐electric UAV that was equipped with a gimballed IR/RGB camera.
Götz Bramesfeld, William Bissonnette, Maya Rahaman‐Noronha, Kanwar Johal   +3 more
wiley   +1 more source

Packet reception algorithm for redundant data links in transport drones

Electronics Letters
In a drone system with dual data links, this article presents a redundant data processing algorithm that can minimize flight control instability without increasing the weight and price of the aircraft by software processing of duplicate received messages.
Sung‐Ho Lim, Jong‐Hun Lee, Kilyoung Seong, Jae‐Kyung Kim   +3 more
doaj   +1 more source

Downwash Reduction Drone With Adaptive Rotors and Its 3D Aerodynamic Analysis and Stabilization Control

IEEE Access
When a drone performs physical maneuvers in close proximity to ground objects at extremely low altitudes, the downwash generated significantly impacts the object directly beneath it.
Ryosuke Morishita, Shin Kawai, Hajime Nobuhara   +2 more
doaj   +1 more source

Evaluating machine learning models for multi‐species wildlife detection and identification on remote sensed nadir imagery in South African savanna

Wildlife Biology, EarlyView.
This research paper investigates the efficacy of leading machine learning (ML) models for detecting and identifying ungulate species in African savanna using nadir imagery from unmanned aerial vehicles (UAVs). Traditional aerial counting methods, while widely used, suffer from significant limitations in accuracy and precision, in part due to human ...
Paul Allin, Fadel Seydou, Radloff Frans, Andrew Davies, Alison Leslie   +4 more
wiley   +1 more source