Results 91 to 100 of about 3,845,868 (264)

Hybrid Spring‐Coupled Broadband Energy Harvester Integrated with CuSCN Functionalized Triboelectric Vibration Sensor for Self‐Sustainable Vehicular IoTs

Advanced Science, EarlyView.
A self‐sustainable vehicular vibration and indoor environment monitoring IoT platform is developed which integrates a hybrid spring‐coupled broadband energy harvester with a machine learning‐assisted PAN‐CuSCN nanofiber triboelectric vibration sensor for subtle‐to‐wide‐range vibration detection and road/speed classification.
Trilochan Bhatta, Gagan Bahadur Pradhan, Shital Sharma, MoonSeong Jo, Aklesh Teli, Hochan Chang, Jae Yeong Park   +6 more
wiley   +1 more source

Vibration serviceability assessment and vibration mitigation of through-truss footbridges in Iran under human-induced excitation

Scientific Reports
This study evaluates the vibration serviceability of widely implemented steel through-truss footbridges in Iran, with a detailed analysis of three representative case studies.
Hamed Nazifkerdar, Saman Bagheri, Majid Barghian, Nasser Khanlou   +3 more
doaj   +1 more source

Investigation and Control of VIVs with Multi-Lock-in Regions on Wide Flat Box Girders

Journal of Control Science and Engineering, 2017
On the preliminary designing of a wide flat box girder with the slenderness ratio 12, vertical and torsional vortex-induced vibrations (VIV) are observed in wind tunnel tests.
Bo Wu, Liangliang Zhang, Yang Yang, Lianjie Liu, Haohong Li   +4 more
doaj   +1 more source

Dual‐Dynamically Crosslinked Nanogels Enable Prolonged Ocular Retention for Multimodal Dry Eye Therapy

Advanced Science, EarlyView.
This berberine‐loaded dual‐dynamically crosslinked nanogel integrates tannic acid‐zinc metal‐phenolic networks and carboxymethyl chitosan/aldehyde‐functionalized poly(ethylene glycol) dynamic Schiff base networks, achieving 1‐year colloidal and antioxidant stability, sustained corneal berberine exposure for 24 h to support convenient once‐daily dosing,
Yanru Xin, Sisi Chen, Shengli Huang, Mengqi Huang, Jingyan Zhu, Zijian Wang, Jianliang Shen, Qinxiang Zheng   +7 more
wiley   +1 more source

Pedestrian-Induced Bridge Vibration Driven by Behavioral Preferences

Buildings
Modern lightweight pedestrian bridges exhibit heightened susceptibility to human-induced vibration due to low natural frequencies and high flexibility. This study integrates behavioral science to explore pedestrian–structure coupling, developing a novel bidirectional biomechanical model capturing vertical/lateral movements.
Jinbao Yao, Yueyue Chen, Weiwei Yang, Yu Sun, Zhaozhi Wu   +4 more
openaire   +1 more source

Arhgef1 Deletion Disrupts Early Cortical Neurogenesis via PAK1 Overactivation and Causes Motor Dysfunction in Adulthood

Advanced Science, EarlyView.
ARHGEF1 plays a pivotal role in both embryonic cortical neurogenesis and adult motor function. During early development, it governs genesis of deep‐layer cortical neurons by negatively regulating RAC1/CDC42‐PAK1‐Cofilin signaling. In adulthood, ARHGEF1 is important for the maintenance of neuronal morphology and activity in the motor cortex, ensuring ...
Liuren Li, Xuanyue Ma, Zhenyu Ding, Bang Sun, Linglin Liu, Hei Matthew Yip, Wei Wang, Tianying Wu, Yuan Guo, Yinghui Peng, Shiqing Zhang, Jacque Pak Kan Ip, Li Zhang, Keshen Li, Lei Shi   +14 more
wiley   +1 more source

Evaluating vibrations on a small-scale model of a timber footbridge

Maderas: Ciencia y Tecnología, 2011
In Brazil, the study of pedestrian-induced vibration on footbridges has been undertaken since the early 1990s, for concrete and steel footbridges. However, there are no recorded studies of this kind for timber footbridges.
Pedro Gutemberg de Alcântara Segundinho, Antonio Alves Dias, Marcelo Rodrigo Carreira   +2 more
doaj  

Dynamic Supercooled Crystal–Gels for Ultrafast, Reversible Mechanical Adaptative Materials

Advanced Science, EarlyView.
A dynamic supercooled crystal–gel mimics starfish tissue by storing non‐equilibrium energy in a metastable liquid. A gentle touch triggers templated crystallization, producing a 2596‐fold stiffness increase with negligible volume change. The lattice disintegrates reversibly under humidity or warmth.
Yuesong Lv, Hao Feng, Zhangqin Yang, Jianping Yin, Hanfei Li, Bo Zhou, Yuyang Meng, Yuntong Su, Xinxing Zhang, Xibo Pei   +9 more
wiley   +1 more source

On the Role of Preprocessing and Memristor Dynamics in Reservoir Computing for Image Classification

Advanced Electronic Materials, EarlyView.
ABSTRACT Reservoir computing (RC) is an emerging recurrent neural network architecture that has attracted growing attention for its low training cost and modest hardware requirements. Memristor‐based circuits are particularly promising for RC, as their intrinsic dynamics can reduce network size and parameter overhead in tasks such as time‐series ...
Rishona Daniels, Duna Wattad, Ronny Ronen, David Saad, Shahar Kvatinsky   +4 more
wiley   +1 more source

Human-induced vibration assessment of a steel arch footbridge with tapered truss cross-section

Advances in Bridge Engineering
The serviceability of pedestrian bridges may be affected by the discomfort due to vibrations felt by the users crossing the deck. Design guidelines recommend avoiding critical frequency ranges and provide acceptance criteria for maximum accelerations to ...
Matteo Marra, Emma Ghini, Giada Gasparini, Stefano Silvestri   +3 more
doaj   +1 more source