Results 41 to 50 of about 2,146,103 (291)

Gradient structure and transport coefficients for strong particles

, 2018
We introduce and study a simple and natural class of solvable stochastic lattice gases. This is the class of \emph{Strong Particles}. The name is due to the fact that when they try to jump to an occupied site they succeed pushing away a pile of particles.
Gabrielli, Davide, Krapivsky, P. L.
core   +1 more source

Effect of atmosphere on the fabrication of Si2N2O matrix composites [PDF]

Processing and Application of Ceramics, 2018
Si2N2O matrix composites were fabricated by solid/gas reaction in air or N2 atmosphere. The effects of atmosphere on the phase and microstructure of the composites were investigated.
Wei Li, Fan Zhang, Ning Li, Tingting Su, Bingbing Fan, Hongxia Li, Guotian Ye, Rui Zhang   +7 more
doaj   +1 more source

Broadband acoustic signal enhancement via gradient metamaterials coupled to crystals

Frontiers in Physics, 2023
In this work, a phononic crystal gradient metamaterial structure (PCGMs) is proposed based on the strong wave compression effect coupled with equivalent medium theory to achieve enhancement and directional sensing of weak target acoustic signals ...
Sai Zhang, Guodong Hao, Xinsa Zhao, Yexin Liu, Jianning Han   +4 more
doaj   +1 more source

Multiscale Gradients of Corticopontine Structural Connectivity

Scientific Reports
Abstract The cerebellum’s involvement in a range of cognitive, emotional, and motor processes has become increasingly evident. Given the uniformity of the cerebellar cortex’s cellular architecture its contributions to varied processes are thought be partially mediated by its patterns of reciprocal connectivity with the rest of the brain.
Rousseau, P., Bazin, P., Steele, C. ; https://orcid.org/0000-0003-1656-7928   +2 more
openaire   +4 more sources

High-Efficiency and Durable Flame Retardant Cotton Fabric with Good Physical and Mechanical Properties by Layer-by-Layer Assembly Polyethylenimine/Phytic Acid Coating

Journal of Natural Fibers, 2022
In this study, intumescent flame retardant coating of polyethylenimine/phytic acid (PEI/PA) with gradient structure was constructed on cotton fabric through a facile layer-by-layer (LBL) assembly method. The LOI value of coated cotton fabric reached over
Xinhua Liu, Hailong Liu, Yinchun Fang
doaj   +1 more source

Gradient type optimization methods for electronic structure calculations

, 2013
The density functional theory (DFT) in electronic structure calculations can be formulated as either a nonlinear eigenvalue or direct minimization problem.
Wen, Zaiwen, Zhang, Xin, Zhou, Aihui, Zhu, Jinwei   +3 more
core   +1 more source

Preparation and Characterization of Pt/buckypaper Catalytic Layer Based on Pt/CNTs Catalyst for Fuel Cells

Cailiao gongcheng, 2018
In order to increase the utilization of the precious metal catalysts in proton exchange membrane fuel cells, a new type of Pt/buckypaper catalytic layer with gradient structure was designed and prepared.
ZHU Shi-yao, LI Ping, YE Li-cheng, ZHENG Jun-sheng, GAO Yuan   +4 more
doaj   +1 more source

An ultrabroadband metamaterial absorber based on remarkable magnetic coupling via constructing conductive composite resonators and magnetic gradient gyroid structure

Virtual and Physical Prototyping, 2023
Broadband electromagnetic absorbing is still a challenge due to the huge difference of waves properties in different frequency bands. Herein, based on the transmission-line theory, we propose an in-plane hybrid metamaterial absorber using coupled ...
Zhen Yang, Qingxuan Liang, Yubing Duan, Pan Liu, Xin Wang, Dichen Li   +5 more
doaj   +1 more source

On-Line Learning Theory of Soft Committee Machines with Correlated Hidden Units - Steepest Gradient Descent and Natural Gradient Descent -

, 2002
The permutation symmetry of the hidden units in multilayer perceptrons causes the saddle structure and plateaus of the learning dynamics in gradient learning methods.
Amari S., Amari S., Fukumizu K., Rattray M., Saad D., Yang H. H.   +5 more
core   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source