Results 81 to 90 of about 416,908 (286)

Consumer Wi‐Fi device based action quality recognition: An illustrative example of seated dumbbell press action

IET Communications, 2021
A system called WiSDP, which is based on Wi‐Fi signals, to detect whether a Seated Dumbbell Press action is standard by using inexpensive consumer Wi‐Fi devices is proposed. Compared with the scheme based on high speed cameras and wearable sensors, Wi‐Fi
Yuxi Qin, Su Pan, Weiwei Zhou, Duowei Pan, Zibo Li   +4 more
doaj   +1 more source

A Smart Magnetically Actuated Flip‐Disc Programmable Metasurface with Ultralow Power Consumption for Real‐Time Channel Control

Advanced Functional Materials, EarlyView.
The study proposes a 1‐bit programmable metasurface based on flip‐disc display, named flip‐disc metasurface (FD‐MTS). This new design enables ultralow energy consumption while maintaining coding patterns. It also exhibits high scalability and multifunctional flexibility.
Jiang Han Bao, Che Liu, Jia Cheng Li, Zhen Hao Fu, Yi Su Huang, Si Qi Huang, Lei Zhang, Jian Wei You, Tie Jun Cui   +8 more
wiley   +1 more source

Solvent‐Free Bonding Mechanisms and Microstructure Engineering in Dry Electrode Technology for Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
Dry electrode technology revolutionizes battery manufacturing by eliminating toxic solvents and energy‐intensive drying. This work details two promising techniques: dry spray deposition and polymer fibrillation. How their unique solvent‐free bonding mechanisms create uniform microstructures for thicker, denser electrodes, boosting energy density and ...
Yuhao Liang, Hao Long, Zimo Huang, Ting He, Xueming Chen, Meng Li, Hao Chen, Shanqing Zhang   +7 more
wiley   +1 more source

AM-DisCNT: Angular Multi-hop DIStance based Circular Network Transmission Protocol for WSNs

, 2013
The nodes in wireless sensor networks (WSNs) contain limited energy resources, which are needed to transmit data to base station (BS). Routing protocols are designed to reduce the energy consumption. Clustering algorithms are best in this aspect.
Akbar, M., Javaid, N., Mohammad, S. N., Rao, A., Sarfraz, S.   +4 more
core   +1 more source

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

Advanced Functional Materials, EarlyView.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai, Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +6 more
wiley   +1 more source

Multi-dimensional flux balance analysis to optimized resources and energy efficiency in MEC aided 5G networks

Scientific Reports
5G and 6G development aim to fulfil very low latency, low energy consumption, and great computation ability. In the present era, the number of devices is increasing daily, which requires more communication and computation.
Rachit Patel, Rajeev Arya
doaj   +1 more source

Online Spectrum Prediction With Adaptive Threshold Quantization

IEEE Access, 2019
In this paper, we explore the spectrum inference to achieve the spectrum occupancy in advance through analyzing the historical spectrum. We have conceived an offline-online cooperative framework.
Haoyu Li, Xiaojin Ding, Yiguang Yang, Zhuochen Xie, Gengxin Zhang   +4 more
doaj   +1 more source

OLIMPO, An Ad-Hoc Wireless Sensor Network Simulator for Public Utilities Applications [PDF]

, 2005
This paper introduces OLIMPO, an useful simulation tool for researchers who are developing wireless sensor communication protocols. OLIMPO is a discreteevent simulator design to be easily recon gured by the user, providing a way to design, develop ...
Barbancho Concejero, Antonio, Barbancho Concejero, Julio, León de Mora, Carlos, Molina Cantero, Francisco Javier, Ropero Rodríguez, Jorge   +4 more
core  

Efficient Data Gathering in Wireless Sensor Networks Based on Matrix Completion and Compressive Sensing

, 2013
Gathering data in an energy efficient manner in wireless sensor networks is an important design challenge. In wireless sensor networks, the readings of sensors always exhibit intra-temporal and inter-spatial correlations.
Chen, Lei, Xiong, Jiping, Zhao, Jian
core   +1 more source

Photo‐Switching Thermal and Lithium‐Ion Conductivity in Azobenzene Polymers

Advanced Functional Materials, EarlyView.
Light‐responsive azobenzene polymers control thermal and ionic transport simultaneously through structural transitions. UV illumination disrupts π–π stacking, converting crystalline trans states to amorphous cis configurations. Thermal conductivity drops from 0.45 to 0.15 W·m−1·K−1 while Li+ diffusivity increases 100 fold. This dual transport switching
Jaeuk Sung, Jungwoo Shin, Qiujie Zhao, Minjee Kang, Christopher Evans, Cecilia Leal, Paul V. Braun, David G. Cahill   +7 more
wiley   +1 more source