Results 51 to 60 of about 2,824,115 (285)

Drone congregation areas of red dwarf honeybee, Apis florea [PDF]

open access: yes, 2009
The drones of dwarf honeybees assemble at the drone congregation areas close to small trees with dense leafage at the heights between 2 to 4 ...
Narayanappa Nagaraja, Axel Brockmann
core  

Research on Drone Fault Detection Based on Failure Mode Databases

open access: yes, 2023
Drones are widely used in a number of key fields and are having a profound impact on all walks of life. Working out how to improve drone safety through fault detection is key to ensuring the smooth execution of tasks. At present, most research focuses on
Yi Song   +3 more
core   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

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

open access: yesDrone 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

Drone Detection with Event Cameras

open access: yes2025 IEEE/CVF International Conference on Computer Vision Workshops (ICCVW)
The diffusion of drones presents significant security and safety challenges. Traditional surveillance systems, particularly conventional frame-based cameras, struggle to reliably detect these targets due to their small size, high agility, and the resulting motion blur and poor performance in challenging lighting conditions.
Gabriele Magrini   +4 more
openaire   +3 more sources

Drone Component for Radio Frequency Detection

open access: yesInterdisciplinary Description of Complex Systems : INDECS, 2022
Recovering people who have lost their way during a hike or disappeared during a disaster is a significant task for disaster management agencies. Nowadays, there are numerous technological devices at our disposal in such cases. Night-vision devices, thermal imagers, and drones are among such technologies.
Péter Miksa Hell, Péter János Varga
openaire   +2 more sources

Analysis of Wind Effect on Drone Relay Communications

open access: yes, 2023
In this study, we realized a relay network using drones and analyzed the impact of the sway angle of a drone’s attitude on communication in a windy flight environment. Drones in flight act as radio relay stations and communication among them is performed
Jiro Hirokawa   +7 more
core   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

The drone debate: sudden bullet or slow boomerang? [PDF]

open access: yes, 2013
Introduction: Growth in the manufacture, military use, and transfer of unmanned aerial vehicles (UAVs or drones) and their associated systems proceeds apace.
Roderic Alley
core  

Real World Object Detection Dataset for Quadcopter Unmanned Aerial Vehicle Detection

open access: yesIEEE Access, 2020
Recent years have shown a noticeable rise in the number of incidents with drones, related to both civilian and military installations. While drone neutralization techniques have become increasingly effective, detection most often relies on professional ...
Maciej L. Pawelczyk, Marek Wojtyra
doaj   +1 more source

Home - About - Disclaimer - Privacy