Results 61 to 70 of about 15,184 (243)

Using unmanned aerial vehicles (drones) to improve access to blood in low- and middle-income countries: Current challenges and opportunities. [PDF]

Vox Sang
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.
Datta SS, Mondal R, Deb S, Tortora G, Pirri A.   +4 more
europepmc   +2 more sources

Dynamic power distribution management for all electric aircraft [PDF]

, 2011
In recent years, with the rapid development of electric and electronic technology, the All-Electric Aircraft (AEA) concept has attracted more and more attention, which only utilizes the electric power instead of conventional hydraulic and pneumatic ...
Xia, Xiuxian
core  

ODE4HERA

, 2023
The objective of the Open Digital Environment for Hybrid-Electric Regional Architectures (ODE4HERA) project is to enable and accelerate the development of Hybrid-Electric Regional (HER) aircraft thanks to improved tools and techniques implemented in a ...
Danilo Ciliberti, Fabrizio NICOLOSI, agostino De Marco, Pierluigi Della Vecchia   +3 more
core  

Pholidota‐Inspired Electronic Skin Possessing Terahertz‐Wave Reflection–Absorption–Transmission Switchability

Advanced Science, EarlyView.
The pholidota‐inspired electronic skin is successfully constructed, originally realized four‐state reversible switching of terahertz‐wave reflection, absorption, transmission, and secondary reflection. In response to external demands, it issues deformation instructions, verifies the deformation state after the equipment executes the action, and thus ...
Shangjing Li, Jiangsong Hou, Yifeng Ruan, Jiang Du, Jun Qiu   +4 more
wiley   +1 more source

A reduced battery system model and sizing algorithm for future hybrid electric airplanes architectures studies

, 2021
International audienceThe path to climate-friendly aviation is a difficult way that needs to be traveled fast. A considerable and immediate drop of fossil fuels consumption is necessary to respect the Paris Agreement.
Berseneff, Boris, Bui Van, Anh-Linh, Fiette, Sébastien   +2 more
core  

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

Life Cycle Assessment of Hybrid-Electric Aircraft Technologies—A Review

IEEE Access
Decarbonizing aviation is a critical goal for mitigating climate change, as the sector contributes significantly to global greenhouse gas emissions. Hybrid electric aircraft (HEA) represent a promising step towards reducing the environmental impact of ...
Aleksandra Zieminska-Stolarska, Mariia Sobulska, Daniel Izquierdo, Deborah Neumann Dela Cruz, Monika Pietrzak, Ireneusz Zbicinski   +5 more
doaj   +1 more source

Intelligent Fault-Tolerant Control for AC/DC Hybrid Power System of More Electric Aircraft

Aerospace, 2021
This paper presents a novel intelligent fault-tolerant control method for a kind of more electric aircraft AC/DC hybrid electrical power system, in order to ensure the safe operation of the engine and improve the power supply quality.
Lingfei Xiao, Robert R. Sattarov, Peisong Liu, Cong Lin   +3 more
doaj   +1 more source

Energy Management of Aircraft Electrical Systems - State of the Art and Further Directions

, 2012
This review paper summarizes state-of-the-art energy management methods applied to electrical systems of large aircraft. An electrical load management based on fixed priorities of the loads is considered a conventional implementation as applied in ...
Jens Lienig, Schlabe, Daniel, Lienig, Jens, Daniel Schlabe   +3 more
core   +1 more source

Robust Reinforcement Learning Control Framework for a Quadrotor Unmanned Aerial Vehicle Using Critic Neural Network

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai, Yefeng Yang, Tao Huang, Boyang Li   +3 more
wiley   +1 more source