Results 71 to 80 of about 449,448 (310)

Better than Rician: modelling millimetre wave channels as two-wave with diffuse power

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
This contribution provides experimental evidence for the two-wave with diffuse power (TWDP) fading model. We have conducted two indoor millimetre wave measurement campaigns with directive horn antennas at both link ends.
Erich Zöchmann   +6 more
doaj   +1 more source

Causality and the Doppler peaks [PDF]

open access: yesPhysical Review D, 1996
4 pages, RevTex file and three figures, This version is to appear in Phys Rev D, Rapid Communications. It includes minor typo corrections and slight changes of emphasis compared to the original, as well as an added reference to a new paper astro-ph/9607109 which includes the full Sachs Wolfe ...
openaire   +3 more sources

Intelligent Maintenance Review for Robots: Multimodal Information, Deep Diagnosis and Embodied Artificial Intelligence

open access: yesAdvanced Robotics Research, EarlyView.
This review maps the methods to monitor robots’ health by fusing vibration, sound, control signals, vision, force, and oil information with artificial intelligence. It identifies deep learning, transfer learning, digital twins, and physics‐informed models as key methodological pathways enabling earlier diagnosis, safer human–robot collaboration, and ...
Yuting Qiao   +6 more
wiley   +1 more source

3D planar velocity measurements, using Mach-Zehnder interferometric-filter-based planar Doppler velocimetry (MZI-PDV) and imaging fibre bundles [PDF]

open access: yes, 2008
Three component planar flow-field measurements are made using imaging fibre bundles to port different views of the measurement plane, defined by a laser light sheet, to a single imaging head.
Charrett, Thomas O. H.   +7 more
core   +1 more source

EndoTac: An Endoscopic Camera‐Based Tactile Sensor with High Sensitivity for Minimally Invasive Surgery

open access: yesAdvanced Science, EarlyView.
EndoTac presents a trocar‐compatible endoscopic vision‐based tactile sensor that uses a convex mirror to enlarge side‐facing tactile coverage during minimally invasive vessel palpation. Distorted tactile images are unwarped and processed by a learning model to estimate vascular deformation, enabling sensitive, spatially distributed tactile perception ...
Yupeng Wang   +5 more
wiley   +1 more source

Solving the inverse magnetostatic problem using fictitious magnetic charges

open access: yesAIP Advances, 2018
We present a method for solving the inverse magnetostatic problem using fictitious magnetic charges. The method utilizes the fact that a given magnetic stray field is generated by only one unique charge distribution.
Gregor Wautischer   +5 more
doaj   +1 more source

Engineered Brain‐Targeted Exosomes Delivering FGF1 for Sustained Glycemic Regulation and Multitarget Neurovascular Protection in Diabetic Stroke

open access: yesAdvanced Science, EarlyView.
ABSTRACT Diabetic stroke is characterized by a hyperglycemic and pro‐inflammatory microenvironment that exacerbates neurovascular dysfunction. However, the blood–brain barrier (BBB) remains a formidable obstacle, restricting the delivery of most therapeutic molecules.
Bixin Shen   +7 more
wiley   +1 more source

Single camera 3D planar velocity measurements using imaging fibre bundles and two frequency Planar Doppler Velocimetry (2nu-PDV) [PDF]

open access: yes, 2005
3D planar flow-field measurements are made using multiple imaging fibre bundles to port different views of the measurement plane, defined by a laser light sheet, to a CCD camera.
Charrett, Thomas O. H.   +5 more
core   +1 more source

m6A‐Driven Pexophagy Triggers Placental Ferroptosis to Impair Fetal Growth Upon Environmental Stress

open access: yesAdvanced Science, EarlyView.
Prenatal environmental stress exposure promotes m6A modification to drive PEX2‐dependent pexophagy, thereby causing placental ferroptosis and FGR. ABSTRACT The role and underlying mechanisms of placental ferroptosis in fetal growth restriction (FGR) induced by environmental stress remain poorly understood.
Xin‐Xin Zhang   +18 more
wiley   +1 more source

The development of an ultrasonic Doppler bed-load velocimeter [PDF]

open access: yes, 1989
Includes bibliography.A instrument has been developed for measuring the velocity of solid particles adjacent to the pipe wall in a solids-liquid pipeline.
Lazarus, Mark Doron
core   +1 more source

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