Results 81 to 90 of about 103,159 (268)

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

open access: yesAdvanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti   +8 more
wiley   +1 more source

FDD Massive MIMO Channel Estimation with Arbitrary 2D-Array Geometry

open access: yes, 2018
This paper addresses the problem of downlink channel estimation in frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems.
Dai, Jisheng   +2 more
core   +1 more source

Navigating Ternary Doping in Li‐ion Cathodes With Closed‐Loop Multi‐Objective Bayesian Optimization

open access: yesAdvanced Materials, EarlyView.
The search for advanced battery materials is pushing us into highly complex composition spaces. Here, a space with about 14 million unique combinations is efficiently explored using high‐throughput experimentation guided by Bayesian optimization with a deep kernel trained on both the Materials Project database and our data.
Nooshin Zeinali Galabi   +6 more
wiley   +1 more source

A novel EO-based optimum random beamforming method in mmWave-NOMA systems with sparse antenna array

open access: yesDigital Communications and Networks
Millimeter-wave (mmWave) Non-Orthogonal Multiple Access (NOMA) with random beamforming is a promising technology to guarantee massive connectivity and low latency transmissions of future generations of mobile networks.
Fatemeh Asghari Azhiri   +2 more
doaj   +1 more source

Optimal Design of Sparse Array for Ultrasonic Total Focusing Method by Binary Particle Swarm Optimization

open access: yesIEEE Access, 2020
Ultrasonic phased array technology is used in various fields. Traditional full phased arrays place elements in every position of a uniform lattice with half-wavelength spacing between the lattice points, so the hardware cost is very high.
Han Zhang   +3 more
doaj   +1 more source

Cancer Cells Traverse Faster in Confined Space by Modifying Vimentin filaments With Nuclear Deformation and Promoting the Growth of Desired Tumor Spheroids

open access: yesAdvanced Materials Interfaces, EarlyView.
This study demonstrates how the Vimentin intermediate (VIM) filaments distribution/density regulates the attainment of different migration modes through cytoskeleton rearrangement and controls the nuclear morphology in migrating cells under physical confinement, which facilitates the faster traversing of those cells and the growth of post‐migration ...
Md Kowsar Alam   +4 more
wiley   +1 more source

Thinning and Weighting of Planar/Conformal Arrays Considering Mutual Coupling Effects

open access: yesInternational Journal of Antennas and Propagation, 2016
Based on an improved active element pattern (AEP) technique, a novel effective method for sidelobe suppression considering mutual coupling (MC) in planar and conformal sparse arrays is proposed in this paper.
You-Feng Cheng   +4 more
doaj   +1 more source

Self‐Assembled Fluorescent Nanodiamond Layers for Quantum Imaging

open access: yesAdvanced Materials Interfaces, EarlyView.
We developed a simple, scalable method for coating surfaces with fluorescent nanodiamonds. By optimizing the coating process, we created uniform, dense layers that enable high‐resolution magnetic imaging using the nitrogen‐vacancy (NV) center in nanodiamonds. This approach enables the development of cost‐effective quantum‐sensing and imaging substrates
Katherine Chea   +8 more
wiley   +1 more source

An M-step preconditioned conjugate gradient method for parallel computation [PDF]

open access: yes
This paper describes a preconditioned conjugate gradient method that can be effectively implemented on both vector machines and parallel arrays to solve sparse symmetric and positive definite systems of linear equations.
Adams, L.
core   +1 more source

A Survey on Array Storage, Query Languages, and Systems [PDF]

open access: yes, 2013
Since scientific investigation is one of the most important providers of massive amounts of ordered data, there is a renewed interest in array data processing in the context of Big Data.
Cheng, Yu, Rusu, Florin
core  

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