Results 81 to 90 of about 124,366,313 (297)

Angles of Arrival Estimation with Unitary Partial Propagator

open access: yes, 2013
{"references": ["Hamid Krim and Mats Viberg,\" Two Decades of Array Signal Processing Research\", IEEES Signal Processing Magazine, vol. 13, pp. 67-94, 1996.", "Schimdt, R.O, \" Multiple Emitter Location and Signal Parameter Estimation,\" IEEE Trans. On Antennas Propagation, Vol.34, No.3, March 1986,pp.276-280.", "R. Roy and T.
Khmou, Youssef, Safi, Said
openaire   +7 more sources

Clinical Practice Guideline for Evaluation and Management of Peripheral Nervous System Manifestations in Sjögren's Disease

open access: yesArthritis Care &Research, EarlyView.
Objective Sjögren's disease is an autoimmune disorder that can impact multiple organ systems, including the peripheral nervous system (PNS). PNS manifestations, which can exist concurrently, include mononeuropathies, polyneuropathies, and autonomic nervous system neuropathies.
Anahita Deboo   +88 more
wiley   +1 more source

Benefits and Impact of Joint Metric of AOA/RSS/TOF on Indoor Localization Error

open access: yesApplied Sciences, 2016
The emerging techniques in the Fifth Generation (5G) communication system, like the millimeter-Wave (mmWave) and massive Multiple Input Multiple Output (MIMO), make it possible to measure the Angle-Of-arrival (AOA), Receive Signal Strength (RSS) and Time-
Qing Jiang   +3 more
doaj   +1 more source

Risk of Retinopathy Associated with Long‐Term Use of Hydroxychloroquine in Patients with Rheumatic Diseases: A Systematic Review and Meta‐Analysis

open access: yesArthritis Care &Research, EarlyView.
Objective We aimed to estimate the prevalence and cumulative incidence of hydroxychloroquine retinopathy (HCQ‐R) and its risk factors among patients receiving long‐term HCQ with rheumatic diseases through a systematic review and meta‐analysis of observational studies that used spectral‐domain optical coherence tomography (SD‐OCT) for screening ...
Narsis Daftarian   +4 more
wiley   +1 more source

Angle of arrival calculation methods for localization using UWB technology

open access: yes, 2022
The thesis describes UWB technology, compares available hardware platforms and describes UWB localization methods. The practical part compares the methods of calculating the angle of arrival from the phase difference of signal arrival on the two-element ...
Žaludek, Ivo
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

HF Radio Angle-of-Arrival Measurements and Ionosonde Positioning

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2014
Since 2010 a 2nd generation NOAA MF/HF radar, also referred to as the VIPIR ionosonde, has been operated at Hualien, Taiwan (23.8973°N, 121.5503°E). The Hualien VIPIR ionosonde is a modern ionospheric radar, fully digitizing complex signal records and ...
Lung-Chih Tsai   +3 more
doaj   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera   +8 more
wiley   +1 more source

Letter with attachment: Paul M. Angle to Ida M. Tarbell, December 14, 1936

open access: yes, 1936
Letter with original transcript of preface to Whitney's Life on the Circuit with ...
Angle, Paul M.
core  

Performance Evaluation of Deep Learning Approaches for Angle Estimation Based on AoA and DoA Estimation

open access: yesApplied Sciences
Accurate Angle of Arrival (AoA) and Direction of Arrival (DoA) estimation is crucial for Indoor Positioning Systems (IPS). Traditional signal processing methods, such as MUSIC and ESPRIT, provide high-resolution estimation at the cost of high ...
Seoyoung Koh, Jaeho Lee
doaj   +1 more source

Home - About - Disclaimer - Privacy