Results 31 to 40 of about 1,267 (185)

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

The Evolution of Autonomous Systems for Planetary Cave Exploration: A Review

Journal of Field Robotics, Volume 43, Issue 6, Page 4094-4115, September 2026.
ABSTRACT The exploration of Subsurface Access Points (SAPs), such as lava tubes on the Moon and Mars, has gained significant interest due to their potential as stable environments shielded from surface radiation and temperature extremes. These sites are considered high‐value targets for detecting water and signs of ancient life, and assessing their ...
Sarah Swinton, Daniel Mitchell, Jamie Blanche, Euan McGookin, David Flynn   +4 more
wiley   +1 more source

Dynamics of a Rod Attached to a Rotating Hinge

Macromolecular Symposia, Volume 415, Issue 4, August 2026.
ABSTRACT The dynamics of a rod attached to a rotating hinge, also interpreted as a physical pendulum in a rotating frame, provide a valuable mechanical model for analyzing the complex oscillatory behavior of helicopter rotor blades. This simplified system captures essential features of blade flapping and in‐plane motions influenced by inertial and ...
Gheorghe Floroiu, Mihai Valentin Predoi, Roxana Alexandra Petre   +2 more
wiley   +1 more source

Embedding Fiber Segment Interferometry for Localization of Defects in Composite Structures

Polymer Composites, Volume 47, Issue 14, Page 12874-12886, 20 July 2026.
Graphical representation of composite structures with embedded fiber optic sensors for structural health monitoring, enabling strain measurement and damage localization under mechanical loading. ABSTRACT In the area of structural health monitoring (SHM), embedding strain sensors into smart composites is a key strategy for detecting failures arising ...
Shiva Mohammadkarimi, Christoph Hemeling, Thomas Kissinger, Florian Puch   +3 more
wiley   +1 more source

Transcranial Ultrasound in the Helicopter Emergency Medical Services—A Feasibility Study

Journal of Neuroimaging, Volume 36, Issue 4, July/August 2026.
ABSTRACT Background and Purpose Transcranial color‐coded Doppler (TCCD) is a noninvasive, widely available diagnostic method that may identify large vessel occlusion (LVO) in acute stroke patients. This study aimed to explore whether helicopter emergency medical services (HEMS) physicians could use TCCD in a prehospital setting to identify the proximal
Ingrid N. Rognes, Pål C. W. Morberg, Henriette S. Jæger, Marius Rehn, Kristine Stø, Lars Alteheld, Else Charlotte Sandset, Maren R. Hov, Karianne Larsen   +8 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

Vox Sanguinis, Volume 121, Issue 6, Page 700-709, June 2026.
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, Ritwick Mondal, Shramana Deb, Giuseppe Tortora, Angela Pirri   +4 more
wiley   +1 more source

Feature Extraction Method of Helicopter Target Based on Flicker Phenomenon Combined With Phase Compensation

IEEE Access, 2022
For the typical multi-component periodic micro-Doppler signal parameter estimation, a helicopter rotor feature extraction method based on flicker phenomenon and phase compensation is proposed in this paper.
Saiqiang Xia, Jun Yang, Zhijian Sun, Zibo Zhou, Chaowei Zhang, Jianwei Liu, Yingxin Xu   +6 more
doaj   +1 more source

An Engineering Model for Static Yawed Wind Turbines Based on Actuator Line Simulations and Symbolic Regression

Wind Energy, Volume 29, Issue 5, May 2026.
ABSTRACT Yaw engineering models are commonly used as add‐ons to the industrial blade element momentum (BEM) framework to improve load and power predictions by accounting for the skewed wake effect. However, existing yaw engineering models show noticeable limitations in accurately predicting the induced velocity distribution across the blade span.
Haoyuan Sun, Andrea Sciacchitano, Wei Yu
wiley   +1 more source

MODELING, CONTROL AND NAVIGATION OF AN AUTONOMOUS QUAD-ROTOR HELICOPTER [PDF]

Interdisciplinary Description of Complex Systems, 2016
Autonomous outdoor quad-rotor helicopters increasingly attract the attention of potential researchers. Several structures and configurations have been developed to allow 3D movements.
Damir Šoštarić
doaj   +1 more source

Past Field Experiments of Solar Radiation Modification: A Review of the Scientific and Technical Aspects for Governance

Earth's Future, Volume 14, Issue 5, May 2026.
Abstract As global warming intensifies, Solar Radiation Modification (SRM) has drawn increasing scientific and policy interest as a potential means to temporarily offset climate impacts. This review examines past SRM (or SRM‐like) field experiments, categorized into three primary techniques: Tropospheric and Stratospheric Aerosol Injection (SAI ...
I. Hernandez‐Galindo, A. Määttänen, B. H. Redmond Roche, O. Boucher, P. J. Irvine, J. C. Moore   +5 more
wiley   +1 more source