Results 121 to 130 of about 5,464,510 (283)

Feasibility Analysis on the Utilization of the Iridium Satellite Communications Network for Resident Space Objects in Low Earth Orbit [PDF]

, 2013
In recent years, space has become more congested and contested, particularly in low Earth orbit (LEO), generating the need for a low-latency capability to provide precise orbital knowledge and accurate space situational awareness information. This thesis
Claybrook, John R.
core   +1 more source

Emerging Post‐CMOS Hardware Neurons for Brain‐Inspired Computing: Devices, Circuits, and System Integration

Advanced Functional Materials, EarlyView.
The physical realization of artificial neurons is a critical challenge for energy‐efficient neuromorphic computing. This review presents a comprehensive analysis of the evolution of artificial neuron implementations from conventional CMOS to emerging post‐CMOS technologies.
Kannan Udaya Mohanan, Hocheon Yoo, Benoît H. Lessard, Ioannis Kymissis, Chang‐Hyun Kim   +4 more
wiley   +1 more source

PRELIMINARY ANALYSIS OF A COMBINED LIGHT CURVE AND LASER RANGING APPROACH FOR INITIAL ATTITUDE ESTIMATION OF RESIDENT SPACE OBJECTS

The accurate estimation of the attitude of Resident Space Objects (RSOs) is a fundamental task in Space Situational Awareness (SSA) applications. Light curves (LCs) are widely used for this purpose due to their availability and non-intrusive nature ...
Roberto Opromolla, Giorgio Isoletta, Pasquale Bencivenga, Giancarmine Fasano, Alessandro Vananti, Nicola Cimmino   +5 more
core  

Resident space object passive bistatic radar detection using DVB-S2 signals

, 2018
Monitoring objects in Earth's orbit and preventing collisions is becoming an increasingly widespread task. In this regard, several monitoring systems using different type of sensors have been developed over time: Optical, Laser and Radar.
Luca Gentile, Gentile, Luca, Capria, Amerigo, Michele Conti, Christian Moscardini, Marco Martorella, Conti, Michele, Amerigo Capria, Moscardini, Christian, Martorella, Marco; id_orcid, Martorella, Marco   +10 more
core   +1 more source

Attitude and Orbit Control Design and Simulation for an X-Band SAR SmallSat Constellation

Aerospace
The FOCUS mission is an integrative project developed at the Universidad Nacional de San Martín (UNSAM), Argentina, featuring a constellation of small satellites equipped with X-band Synthetic Aperture Radar (SAR) sensors.
Egon Travaglia, Milena Ruiz Benitez, Maria Eugenia Viere, Kathiravan Thangavel, Pablo Servidia   +4 more
doaj   +1 more source

Reservoir‐Driven Neuromorphic Computing Based on Composite Rare‐Earth/Transition Metal Oxide Memristor

Advanced Functional Materials, EarlyView.
A defect‐engineered Ag/Gd2O3:Nb2O5/Pt rare earth composite oxide memristor enables stable multilevel reservoir states through pulse driven conductance modulation. Experimentally measured device responses are incorporated into a device aware reservoir computing framework for CIFAR‐100 image classification, highlighting the potential of rare earth ...
Hammad Ghazanfar, Haider Abbas, Muhammad Rabeel, Honggyun Kim, Ghulam Dastgeer, Muhammad Nasim, Furqan Zahoor, Yawar Abbas, Waqas Ahmad, Deok‐kee Kim   +9 more
wiley   +1 more source

Characterizing Satellite Geometry via Accelerated 3D Gaussian Splatting

Aerospace
The accelerating deployment of spacecraft in orbit has generated interest in on-orbit servicing (OOS), inspection of spacecraft, and active debris removal (ADR).
Van Minh Nguyen, Emma Sandidge, Trupti Mahendrakar, Ryan T. White   +3 more
doaj   +1 more source

Melanin's Role in Balancing Mechanical Strength and Reproductive Output in Environmentally Stressed Fungal Spores

Advanced Functional Materials, EarlyView.
Melanin content directly controls fungal spore mechanical properties, with pigmented spores achieving rupture forces two orders of magnitude higher than hyaline spores. Environmental stress drives this quantity‐quality tradeoff; stressed species invest energy in melanin‐reinforced, mechanically superior thick‐walled, super‐hydrophobic spores, while ...
Atul Agrawal, Steven E. Naleway
wiley   +1 more source

Physics‐Grounded Materials Artificial Intelligence for Reliable Materials Discovery

Advanced Functional Materials, EarlyView.
Physics‐Grounded Materials AI (PhysMat AI) integrates physical priors, descriptors, constraints, verification, and data infrastructure into a unified full‐stack framework, enabling reliable, interpretable, and autonomous AI‐driven materials discovery.
Yuhang Wang, Qian Wang, Seong‐Hoon Jang, Hao Li   +3 more
wiley   +1 more source

Upcycling Keratin‐Based Textile Waste Into High‐Performance Hybrid Fibers Via Tuning the Interfacial Interactions

Advanced Functional Materials, EarlyView.
Keratin recovered from animal‐hair textile waste is fractionated and blended with cellulose to produce continuously spun hybrid fibers. Selecting the high‐molecular‐weight keratin fraction enables 30 wt.% keratin incorporation while maintaining high strength in dry and wet states.
Mian Zhai, Daniel Van Opdenbosch, Inge Schlapp‐Hackl, Teemu Välisalmi, Markus Linder, Michael Hummel, Wenwen Fang   +6 more
wiley   +1 more source