Results 101 to 110 of about 8,148 (288)

Frequency domain channel estimation and equalization for distri-buted STBC-SC-FDE systems with amplify-and-forward relaying

open access: yesTongxin xuebao, 2013
Frequency domain channel estimation and equalization w ied for D-STBC-SC-FDE systems with ampl-ify-and-forward relaying over frequency-selective fading channels, and a training-based least-squares channel estima-tion algorithm was proposed.
Yong-chuan WANG, Zi-li CHEN
doaj   +2 more sources

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

open access: yesAdvanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen   +3 more
wiley   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

open access: yesAdvanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner   +14 more
wiley   +1 more source

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

open access: yesAdvanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo   +7 more
wiley   +1 more source

Dynamic single/dual channel filter with smart temperature set based on electromagnetic tunable FBG

open access: yesTongxin xuebao, 2007
A cascaded fiber Bragg gratings filter module was proposed,which can act either as a tunable single channel filter with its central wavelength and/or bandwidth being tunable,or as a double channel filter with its central wavelength being tunable.The ...
ZHANG Duo-ying1, LIU Min1, LI Jian-dong2
doaj   +2 more sources

A channel estimation method using denoising autoencoder for large-scale asymmetric backscatter systems

open access: yesICT Express
A novel channel estimation method based on deep learning algorithm is proposed for large-scale IoT networks. We consider asymmetric backscatter communication system to maintain low-power at sensor nodes.
Chae Yoon Jung, Jae-Mo Kang, Dong In Kim
doaj   +1 more source

Swelling‐Programmed Topographical Guidance for Dynamic Spheroid Self‐Assembly via a Mechanochemical Hydrogel Niche

open access: yesAdvanced Functional Materials, EarlyView.
A swelling‐programmed micropatterned hydrogel guides adherent cells through a controlled transition from cell–matrix anchoring to cadherin‐mediated cell–cell compaction, enabling rapid assembly of high‐viability spheroids with defined size and morphology.
Han Gyeol Nam   +8 more
wiley   +1 more source

Multi-user joint RIS channel estimation based on ADMM

open access: yesDianxin kexue
Addressing the challenges of high pilot overhead and computational complexity in traditional channel estimation methods for millimeter-wave communication systems aided by reconfigurable intelligent surfaces (RIS), a novel channel estimation algorithm ...
ZHU Luhu, WANG Anding
doaj  

Real-Time Segmentation Network of Yard Images Based on Improved SwiftNet [PDF]

open access: yesJisuanji gongcheng
In a storage yard environment, real-time image semantic segmentation can provide intuitive scene category information. To save the limited hardware resources of edge equipment, such as industrial computers, and provide image semantic category information
CHEN Xiaoyu, SHEN Chen, SHEN Yue, KONG Deming
doaj   +1 more source

Multiplex Modular Nanorobotic Systems with Catalytic Activity under Magnetic Navigation

open access: yesAdvanced Functional Materials, EarlyView.
We present modular nanorobots composed of a magnetic propulsion module and different extension modules carrying functional activities, assembled via DNA base pairing. The system integrates propulsion, optical tracking, enzymatic catalysis, and cell docking in a programmable manner.
Voichita Mihali   +7 more
wiley   +1 more source

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