Results 71 to 80 of about 204,888 (292)

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

Advanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena, J. Terence Blaskovits, Kun‐Han Lin, Denis Andrienko   +3 more
wiley   +1 more source

A Phase-Only Optimization Null Control Method for FDA-MIMO Based on ADMM

Remote Sensing
This paper investigates null control within the transmit–receive beampattern of Frequency Diverse Array-Multiple-Input and Multiple-Output (FDA-MIMO) systems, presenting a novel phase-only optimization approach for achieving null control in FDA-MIMO.
Mengxuan Xiao, Taiyang Hu, Xiaolang Shao, Yifan Wu, Zelong Xiao   +4 more
doaj   +1 more source

Blind adapted, pre-whitened constant modulus algorithm

ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240), 2002
We examine the use of a blind adaptive "pre-whitening" filter to precede an equalizer adapted by the constant modulus algorithm (CMA). The idea is based on results presented in which the use of a (fixed, or non-adaptive) pre-whitening filter provides an isometry (i.e. geometry preserving transformation) between the combined channel-equalizer (or global
Leblanc, James, Fijalkow, Inbar
openaire   +3 more sources

Combination of 3D and 2D Small and Wide Angle X‐Ray Scattering Imaging Reveals Diminished Bone Quality in the Superior Human Femoral Neck Cortex

Advanced Materials, EarlyView.
Combined 2D and 3D X‐ray scattering imaging is used to analyse nanostructural properties in the inferior and superior cortex of 78 human femoral necks from 44 donors. The methodology allows for increased interpretation of nanostructure in a statistically relevant dataset, revealing nanostructural differences in anatomical locations critical to clinical
Torne Tänzer, Tatiana Kochetkova, Arthur Baroni, Mathieu Simon, Mads Carlsen, Santiago Fernandez Bordin, Manuel Guizar‐Sicairos, Philippe Zysset, Marianne Liebi   +8 more
wiley   +1 more source

An Ion‐Based Strategy Toward Synergistic Surface Functionalization Combining the Osteogenic Properties and NIR‐Mediated Antibacterial Activity of PEEK

Advanced Materials, EarlyView.
A multifunctional bioactive PEEK‐based implant (Mn@p/MBG‐SPEEK) is engineered to combat implant‐associated infections while promoting osteogenesis. The hybrid surface activates PI3K/Akt/mTOR and AP‐1 signaling pathways for osteogenic differentiation, while Mn coordination induces electronic coupling that narrows the HOMO‐LUMO energy gap and enhances ...
Zhiyan Xu, Ondřej Adam, Marek Doubrava, Ana M. Beltrán, Ivo Dlouhý, Xin Liu, Baiyan Sui, Aldo R. Boccaccini   +7 more
wiley   +1 more source

Field‐Programmed Anisotropy in Magneto‐Piezoelectric Composites for Material‐Encoded Mechanoperception

Advanced Materials, EarlyView.
Field‐programmed anisotropy imparts material‐level intelligence to soft composites. Magnetic torque dynamics drive magneto‐piezoelectric nanowires from random dispersion into deterministic axial alignment. The resulting hierarchical percolation networks confine electromechanical coupling to specific axes and intrinsically decouple superposed force ...
Yubin Kim, Yumin Kwon, Dabin Kim, Minsun Oh, Jin Young Jung, Dongyeong Gim, Kootak Hong, Jun Yeon Hwang, Sang‐Woo Kim, Minjeong Ha   +9 more
wiley   +1 more source

Hierarchical Modulation Classification with Channel-Type-Guided Blind Preprocessing for High-Order QAM in Multipath Fading Channels

Applied Sciences
Automatic modulation classification (AMC) becomes challenging in multipath fading channels, particularly for high-order quadrature amplitude modulation (QAM) signals whose constellation points are strongly distorted by inter-symbol interference, phase ...
Sungsoo Park, Gyuyeol Kong
doaj   +1 more source

A Wireless, Passive Multimodal Wearable Sensor With Decoupled Sensing Capabilities

Advanced Materials, EarlyView.
A wireless passive multimodal electronic skin is presented for the simultaneous perception of pressure, humidity, and odor through a frequency‐divided LC resonator array. The decoupled sensing architecture suppresses cross‐interference and enables independent signal readout under superimposed stimuli while maintaining high stability.
Wenjiang Han, Heng Xiao, Tianshuang Wang, Xiaoran Ding, Liupeng Zhao, Seokjoo Cho, Peng Sun, Inkyu Park, Geyu Lu   +8 more
wiley   +1 more source

Blind Feedforward Timing Estimation for Constant-Modulus Signalling in Time-Varying Fading Channels

Journal of Electrical and Computer Engineering, 2010
A simple low-complexity algorithm is proposed for blind feedforward symbol timing estimation in time-varying flat-fading channels, assuming constant modulus signalling. Its important properties are brought out using asymptotic analysis.
Shankar Prakriya
doaj   +1 more source

Blind Carrier Frequency Offset Estimation for MIMO-OFDM Systems Based on the Banded Structure of Covariance Matrices for Constant Modulus Signals

IEEE Access, 2018
This paper addresses the problem of blind carrier frequency offset (CFO) estimation for multiinput-multi-output orthogonal frequency division multiplexing systems.
Liu Yang, Hang Zhang, Yang Cai, Hua Yang
doaj   +1 more source