Results 61 to 70 of about 59,683 (249)

Error bounds of block sparse signal recovery based on q-ratio block constrained minimal singular values

EURASIP Journal on Advances in Signal Processing, 2019
In this paper, we introduce the q-ratio block constrained minimal singular values (BCMSV) as a new measure of measurement matrix in compressive sensing of block sparse/compressive signals and present an algorithm for computing this new measure.
Jianfeng Wang, Zhiyong Zhou, Jun Yu
doaj   +1 more source

Programmable Elastic Wave Control Via Mechanical‐Acoustic Interaction in Bistable Metamaterials

Advanced Science, EarlyView.
A mechanically programmable metamaterial based on mechanical‐acoustic interaction enables reconfigurable elastic wave control through bistable state switching. Spatial encoding of peak and valley states tunes band structures and transmission, achieving low‐frequency vibration suppression, waveguiding, and energy localization.
Yuanyuan Li, Yonghua Yu, Chuanqing Chen, Rui Xu, Yulong He, Xin Li, Ming‐Hui Lu, Yan‐Feng Chen   +7 more
wiley   +1 more source

Programmable Multi‐Axially Aligned Aerogels via Sequential Freeze‐Casting for Tailored Anisotropy and Tunable Mechanics

Advanced Science, EarlyView.
Conventional single‐gradient freeze‐casting typically produces unidirectional porous architectures with limited transverse connectivity. The Sequential Hybridization by Infiltration and Freeze‐casting Technique (SHIFT) addresses this constraint by integrating secondary aligned structures within a preformed primary scaffold.
Kiho Sung, Sungchul Shin
wiley   +1 more source

Joint Active Beamforming Design and Performance Analysis for Active RIS-Aided Cognitive Multigroup Multicast Systems

Applied Sciences
This paper considers design optimization for an active reconfigurable intelligent surface (active RIS)-aided cognitive multigroup multicast communication system.
Qingbao Zhou, Shuyao He, Zhengyi Zhang, Chuang Luo, Shiyong Chen, Jian Qin   +5 more
doaj   +1 more source

Bioinspired sprawling robotic leg and a path-planning procedure

International Journal of Advanced Robotic Systems, 2018
This article shows the characteristics of a sprawling robotic leg inspired by the limb postures of certain reptilian animals known as sprawling-legged creatures.
Ignacio Juárez-Campos, Diego A Núñez-Altamirano, Lucia Márquez-Pérez, Leonardo Romero-Muñoz, M Eunice Juárez-Campos, Beatriz Juárez-Campos   +5 more
doaj   +1 more source

Design of concave and convex paired sloped drip laterals

, 2017
Properly designed microirrigation plants allow water use efficiency to be optimized and quite high values of emission uniformity to be obtained in the field.
G. Baiamonte
semanticscholar   +1 more source

Geometry‐Encoded Actuation as a Structural Interaction Layer in Origami Robots

Advanced Science, EarlyView.
We present geometry‐encoded actuation (GEA), a design framework that integrates multistable origami with liquid crystal elastomer actuators to encode environmental interactions into autonomous structural responses. GEA enables programmable shape transformation without continuous sensing or complex control, achieving robust adaptive manipulation and ...
Jianshu Zhou, Yitong Li, Junda Huang, Ian Zhang, Haoran Liu, Boyuan Liang, Yiyuan Zhang, Xiaohui Xiao, Qiguang He   +8 more
wiley   +1 more source

Revealing the Underlying Mechanisms in Performance Enhancement of Shellular Lattice Electrodes During Anion Exchange Membrane Water Electrolysis Process

Advanced Science, EarlyView.
Micro laser powder bed fusion enables architected nickel shellular lattice gas diffusion layers for anion exchange membrane water electrolysis. Among regular open cell geometries, the Gyroid lattice promotes bubble release, convective reactant replenishment and continuous electron transport, delivering low overpotentials, enhanced charge transfer and ...
Tianxiao Niu, Rui Li, Xiao Chen, Deyong Sun, Tianyu Gao, Junhao Ding, Shuo Qu, Xu Song   +7 more
wiley   +1 more source

Beamforming Design for Simultaneous Transmission and Reflection Reconfigurable Intelligent Surface Assisted Secure Wireless Communication by considering Imperfect CSI [PDF]

International Journal of Information and Communication Technology Research
This paper investigates beamforming design for Simultaneous transmission and reflection reconfigurable intelligent surface (Star RIS) assisted secure wireless communication with three operating protocols (energy splitting (ES), mode switching (MS), and ...
Seyedeh Reyhane Shahcheragh, Kamal Mohamed-pour   +1 more
doaj  

Surface Energy Modulated Self‐Assembly of Percolative Gallium Nanodroplet Films for Stretchable Electronics

Advanced Electronic Materials, EarlyView.
Surface‐energy guided self‐assembly of liquid metals enables the transformation of liquid metal micro/nanodroplets into continuous perocolative films on elastomeric substrates. By tailoring interfacial energetics and wetting behavior, uniform, conductive, and stretchable films are achieved, offering scalable pathways for high‐performance soft ...
Alwar Samy Ramasamy, Gayatri Subhalaxmi, Sneha Banerjee, Mark Vailshery, Renu Raman Sahu, Sivakumar K.S, Ajisha Chathyattu, Tapajyoti Das Gupta   +7 more
wiley   +1 more source