Results 91 to 100 of about 128,085 (304)

Machine learning-based intelligent localization technique for channel classification in massive MIMO

open access: yesDiscover Internet of Things
Multiple-input multiple-output (MIMO) technology has been widely adopted in wireless communications, which enables the simultaneous transmission of multiple data streams via multiple transmitting and receiving antennas.
Fadhil Ghrabat   +2 more
doaj   +1 more source

An Aggregation‐Induced Polymerization Poly(Disulfide)‐Drug Nanoplatform for Autoimmune Uveitis Therapy via Inhibiting the cGAS‐STING Pathway

open access: yesAdvanced Science, EarlyView.
A cationic poly(disulfide)‐drug nanoplatform (LA/DexP) was developed to treat experimental autoimmune uveitis (EAU). With potent blood‐retinal barrier penetrability, LA/DexP releases DSP in response to high ROS and scavenges cfDNA to inhibit the cGAS‐STING signaling pathway.
Yuelan Wu   +12 more
wiley   +1 more source

Sub6GHz Non-Line-of-Sight Effects in Mobile Communications: A New Perspective for Rainfall Monitoring [PDF]

open access: yes
Sub6GHz non-line-of-sight signals are a potential opportunistic source of rainfall information that promises to improve the current urgent need regarding near-surface rainfall detection, but the complex mechanisms in which these signals are impacted by ...
Kang Pu (18243052)
core   +1 more source

Paraborg: Paramedic Cyborg Insects for In Situ Emergency Drug‐Delivery

open access: yesAdvanced Science, EarlyView.
This work introduces Paraborg, a human‐supervised paramedic cyborg‐insect platform that combines controllable locomotion, onboard imaging, and an auto‐injection mechanism for in situ drug‐delivery. By demonstrating reliable navigation, target stabilization, injector launch, and multi‐insect teamwork, the study extends cyborg insects from survivor ...
H. Nhan Le   +5 more
wiley   +1 more source

Efficient Analytical Calculation of Non-line-of-sight Channel Impulse Response in Visible Light Communications [PDF]

open access: yes, 2017
This study provides an analytical method to calculate the non-line-of-sight (NLoS) channel impulse response (CIR) in visible light communication (VLC) systems based on intensity modulation and direct detection (IM/DD). In this method, the NLoS channel is
Basnayaka, Dushyantha A.   +8 more
core   +1 more source

Bypassing Heteronuclear MRI: Metal‐Free Organosilicon Nanotracers for Background‐Free Hotspot 1H Imaging on Clinical Hardware

open access: yesAdvanced Science, EarlyView.
Organosilicon micelles enable background‐free molecular magnetic resonance imaging (MRI) while remaining fully compatible with standard proton (1H) hardware. By exploiting a spectrally silent 1H window at ∼0 ppm, the silicone nanotracer allows hotspot detection by 1H chemical‐shift imaging (CSI) without metals or heteronuclei, enabling direct overlay ...
Martin Orsagh   +4 more
wiley   +1 more source

Radio frequency ranging for wireless sensor network localization [PDF]

open access: yes, 2010
Wireless sensor networks (WSNs) have a diverse range of industrial, scientific and medical applications where the sensor nodes are of low cost, standard with respect to hardware architecture, processing abilities and communicate using low-power narrow ...
Thorbjornsen, B., Thorbjornsen, Bjorn
core  

Line-of-sight effects on double source plane lenses [PDF]

open access: yes
International audienceWeak gravitational lensing perturbations have a non-negligible impact on strong lensing observables, and several degeneracies exist between the properties of the main lens, line of sight, and cosmology. In this work, we consider the
Fleury, Pierre   +3 more
core   +1 more source

How to put quantum particles on magic bullet trajectories that can hit two targets without a clear line-of-sight [PDF]

open access: yes, 2019
Quantum particles move in strange ways, even when they propagate freely in space. As a result of the uncertainty principle, it is not possible to control the initial conditions of particle emission in such a way that the particle will definitely pass ...
Holger F. Hofmann (3980117)
core   +1 more source

Young children’s understanding of line of sight [PDF]

open access: yes, 2005
Previous research into children’s understanding of line of sight has led to differing conclusions as to when and how children become able to appreciate that their view of an object will be different from another persons’ view of the same object.
Boydell, Mark M
core   +2 more sources

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