Results 81 to 90 of about 11,923 (261)

Autonomous Charging and Battery Swapping for Unmanned Aerial Vehicles: A Review

Advanced Intelligent Systems, EarlyView.
This review evaluates major autonomous charging and battery swapping methods for unmanned aerial vehicles (UAVs) against a single question: how close each is to sustained unattended operation. Rather than ranking them by charging performance, it identifies the limitation that most restricts each method, and briefly outlines the supporting technologies ...
Zelin Wu, Yuanwen Zhang, Xiangdong Meng, Guangyu Zhang, Huiwen Zhang, Yuquan Leng   +5 more
wiley   +1 more source

Thermal Stability of Aliphatic and Semiaromatic Polyamides: Tailoring the Choice of Isothermal Aging Temperature by Using Kinetic Models of Degradation

Journal of Applied Polymer Science, EarlyView.
Thermogravimetric analysis was performed to study the degradation of aliphatic and semiaromatic polyamides intended for the electrical insulation of future electric aircraft. Using the TGA results, the Flynn and Wall method and Toop's model, the activation energies for the degradation processes were calculated, and kinetic models of the degradation ...
Julien Chedaille, Victor Henri, Pierre Henrard, Éric Dantras   +3 more
wiley   +1 more source

Fiber Bragg Gratings Sensors for Aircraft Wing Shape Measurement: Recent Applications and Technical Analysis

Sensors, 2018
The safety monitoring and tracking of aircraft is becoming more and more important. Under aerodynamic loading, the aircraft wing will produce large bending and torsional deformation, which seriously affects the safety of aircraft.
Zhen Ma, Xiyuan Chen
doaj   +1 more source

Tuning Acetal and Disulfide Network Dynamics in Dynamic Diamine‐Cured Partially Bio‐Epoxy Networks

Journal of Applied Polymer Science, EarlyView.
This study investigates the development of high‐performance, sustainable vitrimers by balancing partially bio‐based epoxy resins with dynamic hardener chemistry. The research identifies how resin architecture and specific curing agents influence thermal stability, bond‐exchange kinetics, and environmental durability.
Marko Barbaric, Markus Wolfahrt, Christine Bandl, Sandra Schlögl   +3 more
wiley   +1 more source

Scale‐space image analysis for mapping spotted knapweed in grassland ecosystems

Applications in Plant Sciences, EarlyView.
Abstract Premise This study investigates the value of scale‐space representations of spatial features for the identification and mapping of invasive plants using high‐resolution multispectral imagery. Scale‐space representations combine the two‐dimensional spatial domain with a third dimension representing spatial scale, such that features can be ...
Shohreh Sahebi, David J. Hill
wiley   +1 more source

From liquid learning to weaving learning: Negotiating meanings of Children's learning in family travel

British Educational Research Journal, EarlyView.
Abstract Children's learning increasingly extends into everyday informal settings, but what counts as learning in these contexts remains insufficiently understood. Focusing on family travel as a mobile and socioculturally situated informal learning context, this study adopts a sociocultural perspective and uses liquid learning as a sensitising concept ...
Zhuxian (Zoey) Li, Elaine Chiao Ling Yang, Truc H. Le, Charles Arcodia   +3 more
wiley   +1 more source

Increasing of the spatial orientation estimation accuracy of the aircraft in the interests of radar profiles adaptation to the observation conditions

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The article is devoted to the increasing of the spatial orientation angles estimation accuracy of the aircraft with reference to radar systems. The structural device scheme of the spatial orientation angles estimation of the radar observation object was ...
S. N. Yarmolik, M. V. Svinarskiy, A. S. Khramenkov, E. V. Zaiko   +3 more
doaj  

Integrated aircraft and research vessel observational studies of aerosols and clouds in summer over the western North Pacific

Progress in Earth and Planetary Science
An integrated observational study of aerosols and clouds was carried out in summer 2022 over the western North Pacific (off the eastern coast of Hokkaido, Japan) using both an aircraft and a research vessel for the first time in this area.
Makoto Koike, Yoshimi Kawai, Kouji Adachi, Hidenori Aiki, Yugo Kanaya, Hideaki Kawai, Kazuyuki Kita, Fumiyoshi Kondo, Tsuyoshi Koshiro, Hitoshi Matsui, Takuma Miyakawa, Ayumu Miyamoto, Takafumi Miyasaka, Yuzo Miyazaki, Michihiro Mochida, Tatsuhiro Mori, Nobuhiro Moteki, Toshiyuki Murayama, Hisashi Nakamura, Sho Ohata, Eitarou Oka, Satoru Okajima, Yutaka Tobo, Shion Sekizawa, Atsushi Yoshida   +24 more
doaj   +1 more source

Comprehensive Discussion on Remote Sensing Modeling and Dynamic Electromagnetic Scattering for Aircraft with Speed Brake Deflection

Remote Sensing
To study the influence of speed brake deflection on remote sensing grayscale images and the radar cross section (RCS) of aircraft, we present a comprehensive method based on remote sensing modeling and dynamic electromagnetic scattering.
Zeyang Zhou
doaj   +1 more source

From Material Tensions to Organizational Paradoxes: How Manufacturers Cope With the Limits of Circular Product Design

Business Strategy and the Environment, EarlyView.
ABSTRACT Circular product design (CPD) is central to advancing the circular economy by enabling the narrowing, slowing, and closing of resource flows. Yet, its implementation remains persistently challenging for firms. Prior research has largely framed these challenges as discrete barriers, overlooking the structural contradictions embedded in CPD ...
Vanessa Robertson, Nelly Rahimy, Suleika Bort   +2 more
wiley   +1 more source