Results 91 to 100 of about 6,880,919 (266)

Motion and Inertia Estimation for Non-Cooperative Space Objects During Long-Term Occlusion Based on UKF-GP

Sensors
This study addresses the motion and inertia parameter estimation problem of a torque-free, tumbling, non-cooperative space object (target) under long-term occlusions. To solve this problem, we employ a data-driven Gaussian process (GP) to simulate sensor
Rabiul Hasan Kabir, Xiaoli Bai
doaj   +1 more source

Regulated Ion‐Diffusion Hydrogels for Subtle and Multimodal Temperature‐Strain Sensing in Wound Monitoring

Advanced Functional Materials, EarlyView.
A soft, dual‐channel hydrogel patch enables simultaneous detection of wound temperature and strain by integrating ion‐diffusion‐mediated thermoelectric and resistive sensing. The conformal design maintains stable performance during motion, capturing subtle inflammatory and mechanical changes for continuous wound monitoring.
Yu Fang, Xinglong Pan, Zhiwei Li, Wanheng Lu, Chang Liu, Yi Zhou, Guo Tian, Ghim Wei Ho   +7 more
wiley   +1 more source

Comisión de actuaciones militares para garantizar el Space Domain Awareness en el espacio ultraterrestre: nuevo peligro asociado en el marco del derecho internacional humanitario

Anuario Iberoamericano de Derecho Internacional Penal
 El espacio ultraterrestre actualmente es un entorno al cual se le ha brindado más importancia en las operaciones militares, aumentando de esa manera los riesgos de seguridad y hostilidades que podrían llegar a afectar o traer consecuencias a personas ...
Laura Ximena Hernández Velandia
doaj   +1 more source

Hypothesis-Driven Sensor Tasking for Space Domain Awareness

AMOS 2025 Technical Papers
Abstract When human operators of cyber-physical systems, such as the Space Force's Space Surveillance Tracking (SST) network, encounter surprising behavior, they often consider multiple hypotheses that might explain it. In some cases, taking information-gathering actions such as additional measurements or control inputs given to the ...
Ofer Dagan, Tyler Becker, Zachary Sunberg   +2 more
openaire   +1 more source

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

Advanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source

Feature Detection of Non-Cooperative and Rotating Space Objects through Bayesian Optimization

Sensors
In this paper, we propose a Bayesian Optimization (BO)-based strategy using the Gaussian Process (GP) for feature detection of a known but non-cooperative space object by a chaser with a monocular camera and a single-beam LIDAR in a close-proximity ...
Rabiul Hasan Kabir, Xiaoli Bai
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Space Domain Awareness Architecture for Cislunar and Deep‑Space Operations

Space Domain Awareness (SDA) is fundamental to ensuring the security and sustainability of operations beyond Earth orbit, particularly within cislunar and deep-space environments. As international and commercial interest in lunar and deep-space missions accelerates, maintaining situational awareness of orbital activities, space traffic, and potential ...
openaire   +2 more sources

Monolithic Oxidation Enables Ultrathin Vertically Graded Tantalum Oxide for Low‐Voltage, Low‐Variability Memristive Switching

Advanced Functional Materials, EarlyView.
Monolithic UV‐ozone oxidation of Ta forms an ultrathin Ta2O5/TaOx bilayer enabling resistive switching with a vertical defect gradient. A stoichiometric surface layer over an oxygen‐deficient sublayer promotes localized filament nucleation near the top interface, enabling low‐voltage operation, and reduced cycle‐to‐cycle variability.
Seunghoon Yang, Dong Hyun Lee, Conan Weiland, Won‐Il Lee, Kim Kisslinger, Mingzhao Liu, Aswin kumar Anbalagan, Xiao Tong, Soumyajit Mandal, Nikhil Tiwale, Houk Jang, Chang‐Yong Nam   +11 more
wiley   +1 more source

Telescope imaging beyond the Rayleigh limit in extremely low SNR

New Journal of Physics
The Rayleigh limit and low signal-to-noise ratio (SNR) scenarios pose significant limitations to optical imaging systems used in remote sensing, infrared thermal imaging, and space domain awareness.
Hyunsoo Choi, Seungman Choi, Peter Menart, Angshuman Deka, Zubin Jacob   +4 more
doaj   +1 more source