Results 61 to 70 of about 167,469,029 (193)

Mineralogy, mineral chemistry, and redox equilibria in ten aggregate particles from asteroid Bennu

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 8, Page 1905-1927, August 2026.
Abstract Examination of 10 Bennu aggregate particles has revealed the presence of many phases which taken together can provide constraints on the oxygen fugacity (fO2) of Bennu samples. Phyllosilicates (saponite and serpentine), carbonates, oxides (magnetite, chromite), sulfides (pyrrhotite, pentlandite), phosphate (hydroxyapatite, Na‐Mg‐phosphate ...
K. Righter   +11 more
wiley   +1 more source

Performance evaluation of correlative interferometry for angle of arrival estimation [PDF]

open access: yes, 2014
Radio direction finders are used to determine the direction of emitters and they are used by regulatory bodies, law enforcement, public safety and the Military.
Muhammad Kamal, Suhail
core  

Inferring Helmet Compliance on E-Scooters Using Bluetooth and Angle-of-Arrival (AoA) Technology

open access: yesIEEE Transactions on Instrumentation and Measurement
The use of e-scooters and the associated head injuries have increased significantly in recent years. To protect the head and face of the riders, helmets are essential equipment, sometimes mandatory according to the regulations, which makes them an important research target. In this article, we propose a practical helmet monitoring system for e-scooters
Juan-Antonio Fernández-Madrigal   +3 more
openaire   +3 more sources

Hybrid TOA/AOA Localization with 1D Angle Estimation in UAV-assisted WSN [PDF]

open access: yes, 2020
Unmanned aerial vehicles (UAVs) are considered as a great solution for a flexible and rapid deployment of wireless sensor networks (WSN) in emergency scenarios.
Bouzerdoum, A.   +13 more
core   +1 more source

Direct Observations of Large‐Scale Wave Structure and Post‐Sunset Rise of the Ionosphere in the Generation of Equatorial Spread F

open access: yesGeophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Large‐scale wave structure (LSWS) and the post‐sunset rise (PSSR) are two key factors in the generation of equatorial spread F (ESF). In this study, we reported continuous and direct observations of LSWS and PSSR and their effects on seeding ESF by Sanya incoherent scatter radar (SYISR) and ionosonde in September–October 2024.
Qi Jiang   +6 more
wiley   +1 more source

Osteoarthritis: Epidemiology, Diagnosis, and Treatment

open access: yesMedComm, Volume 7, Issue 7, July 2026.
Osteoarthritis (OA) is a multifactorial degenerative joint disease and a leading cause of disability worldwide. This graphical abstract summarizes the epidemiology, diagnostic strategies, and therapeutic approaches of OA. OA development is driven by aging, metabolic dysregulation, and mechanical stress, leading to progressive joint degeneration ...
Qin Ru   +7 more
wiley   +1 more source

Optical angle‐of‐arrival (AoA) sensor for the motion analysis of knee joints

open access: yesElectronics Letters, 2017
The most widely used clinical technique for estimating bone movements in knee joints with acceptable accuracy utilises implantation of heavy metallic beads into the bones. These small metallic objects become visible as highly contrasting features in captured radiographs, thus facilitating post kinematic assessment of bones in human joints with pinpoint
openaire   +1 more source

Global scope of glaucoma clinical practice for optometrists

open access: yesOptometry and Vision Science, Volume 103, Issue 7, July 2026.
ABSTRACT Purpose The role of optometrists in glaucoma care is evolving rapidly in many parts of the world. This review aims to describe the current global scope of clinical practice for optometrists with respect to glaucoma, highlighting progress and identifying barriers to care across diverse regions.
Jonathan Denniss   +9 more
wiley   +1 more source

Learning Approach for Angle Estimation Based on Characteristics of Phase Drift

open access: yesApplied Sciences
Indoor positioning systems (IPSs) are increasingly vital for various applications on the Internet of Things (IoT), including home automation, navigation in large buildings, AR, and smart city development.
Seoyoung Koh, Jaeho Lee
doaj   +1 more source

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