Results 71 to 80 of about 2,309,558 (245)

Passive acoustic quantification of gas releases

, 2014
The assessment of undersea gas leakages from anthropogenic and natural sources is becoming increasingly important. This includes the detection of gas leaks and the quantification of gas flux. This has applications within oceanography (e.g.
Berges, B.J.P., Tomczyk, M., Leighton, T.G., White, P.R.   +3 more
core   +1 more source

Freestanding Hierarchical‐Porous BCZT Thin Films Enable Efficient Ultrasonic Energy Harvesting in Soft Tissue

Advanced Science, EarlyView.
Freestanding hierarchical‐porous BCZT thin films integrate a compliant porous surface with a dense piezoceramic backbone to balance mechanical reliability, voltage sensitivity, and acoustic coupling. The films enable stable wearable pulse‐wave monitoring and enhanced tissue‐coupled ultrasonic energy harvesting, offering a promising route toward soft ...
Zifan Li, Shengwei Gao, Wang Hong, Yuxin Chen, Yiyang Gu, Xu Wang, Chen Tang, Ying Hong, Xuemu Li, Xiaodong Yan, Yi Zheng, Yiming Liu, Junchen Liao, Biao Wang, Shiyuan Liu   +14 more
wiley   +1 more source

Adaptive Conductive Systems: Enabling Deformable Electronics Through Engineered Materials, Circuits, and Intelligent Systems

Advanced Science, EarlyView.
This review presents the research advances of adaptive conductive systems from the perspective of materials, circuits, systems, and applications. Deformable conductors consist of substrates/matrices and conductive materials, structural design of circuit interconnections, fabrication of circuit interconnections, as well as intelligent systems ...
Yufei Lu, Siyu Liang, Jingyi Niu, Jie Chen, Shuo Zhang, Hongjian Zhang, Dongsheng Jia, Wei Huang   +7 more
wiley   +1 more source

A potential-flow based flight simulator for an underwater glider [PDF]

, 2013
Underwater gliders are recent innovative types of autonomous underwater vehicles (AUVs) used in ocean exploration and observation. They adjust their buoyancy to dive and to return to the ocean surface.
LAURENS, Jean-Marc, DENISET, François, LE BOULLUEC, Marc, PHOEMSAPTHAWEE, Surasak, LE BOULLUEC, M.   +4 more
core   +1 more source

Mechanophore‐Based Multichannel Colorimetric Force Sensors: Ultrasound‐Driven Stress and Strain Quantification

Advanced Science, EarlyView.
ABSTRACT Mechanophores with mechanochromic properties have attracted significant attention as force‐responsive materials for structural sensing. However, their applications remain mainly limited to qualitative force visualization, as direct and quantitative extraction of mechanical parameters such as stress and strain from mechanochromic responses has ...
Seungo Baek, Jeong Hoon Rhee, Skylar K. Osler, Minsoo P. Kim, Shyuan Cheng, Leonardo P. Chamorro, Hyunhyub Ko, Maxwell J. Robb, Gun Kim   +8 more
wiley   +1 more source

Multi-Objective Deployment Optimization of Unmanned Underwater Swarms in Realistic Ocean Environments

Applied Sciences
In marine environmental monitoring, target detection, identification and positioning, and other missions, the detection performance of unmanned underwater swarms directly depends on their deployment strategy. To address complex task scenarios requiring a
Shuting Wang, Feihu Sun, Shanguo Gao, Zhanqing Pu, Wu Zhang   +4 more
doaj   +1 more source

A novel noise reduction technique for underwater acoustic signals based on complete ensemble empirical mode decomposition with adaptive noise, minimum mean square variance criterion and least mean square adaptive filter

Defence Technology, 2020
Underwater acoustic signal processing is one of the research hotspots in underwater acoustics. Noise reduction of underwater acoustic signals is the key to underwater acoustic signal processing.
Yu-xing Li, Long Wang
doaj   +1 more source

Passive Metasurface Tweezers for Multi‐Scale Orbital Transport and Trapping on Elastic Plates

Advanced Science, EarlyView.
Passive labyrinthine phase encoding converts single‐channel excitation into localized flexural‐wave vortices with programmable orbital angular momentum. The resulting vortex fields enable cross‐scale particle manipulation, including orbital transport, central confinement, and rotational actuation.
Zeyang Bi, Zhiqiang Li, Yunkang Ren, Yugui Peng, Xuefeng Zhu, Liuxian Zhao, Jun Yang, Chuanxing Bi   +7 more
wiley   +1 more source

A Novel DBN Feature Fusion Model for Cross-Corpus Speech Emotion Recognition

Journal of Electrical and Computer Engineering, 2016
The feature fusion from separate source is the current technical difficulties of cross-corpus speech emotion recognition. The purpose of this paper is to, based on Deep Belief Nets (DBN) in Deep Learning, use the emotional information hiding in speech ...
Zou Cairong, Zhang Xinran, Zha Cheng, Zhao Li   +3 more
doaj   +1 more source

Recognizing Spontaneous Micro-Expression Using a Three-Stream Convolutional Neural Network

IEEE Access, 2019
Micro-expression recognition (MER) has attracted much attention with various practical applications, particularly in clinical diagnosis and interrogations.
Baolin Song, Ke Li, Yuan Zong, Jie Zhu, Wenming Zheng, Jingang Shi, Li Zhao   +6 more
doaj   +1 more source