Results 171 to 180 of about 107,337 (260)

In‐Wheel Piezoelectric DC Power Generator With Zero Resistive Torque

Advanced Science, EarlyView.
In this paper, we present a wheel‐shaped direct‐current piezoelectric generator (DC‐PG) that fundamentally overcomes these constraints by producing phase‐stable DC electricity directly from rolling motion. By embedding this system into suitcase wheels, we demonstrated a fully integrated real‐time location tracking system powered solely by mechanical ...
Hyun Soo Kim, Hyunseok Song, In Woo Oh, Dong‐Gyu Lee, Tae Kyoung Yoon, Jeyeon Lee, Byoung Jin Yoon, So‐Min Song, Iman M. Imani, Seohyun Cho, Seong Jin Kim, Chong‐Yun Kang, Sahn Nahm, Yong Seok Park, Kyung‐Hoon Cho, Jungho Ryu, Jeong Min Baik, Jun Chen, Sunghoon Hur, Hyun‐Cheol Song   +19 more
wiley   +1 more source

Hybrid Deep Learning Framework for Continuous User Authentication Based on Smartphone Sensors. [PDF]

Sensors (Basel)
Alotaibi B, Alotaibi M.
europepmc   +1 more source

Ultrahigh‐Linear Bio‐Inspired Janus Elastomeric Strain Sensor with High Sensitivity and Stretchability via Surface Wrinkle Engineering

Advanced Science, EarlyView.
A bio‐inspired Micro‐wrinkled Janus elastomeric flexible strain sensor mimicking wrinkled‐leaf viburnum is developed. Endowed with a synergistic sensing mechanism including wrinkle‐guided microcracks, modulus‐gradient‐driven strain division, and a parallel conductive circuit, it achieves ultra‐high linearity, sensitivity, wide strain range, and ...
Jing Lin, Ye Li, Simi Yu, Xing Cheng, Longxin Qian, Yufei Chen, Womin Li, Zhipeng Yang, Yinlei Lin, Dechao Hu, Jianyi Luo, Lan Liu   +11 more
wiley   +1 more source

Comparison of Sleep Features Across Smartphone Sensors, Actigraphy, and Diaries Among Young Adults: Longitudinal Observational Study. [PDF]

JMIR Form Res
Kirshenbaum JS, Crowley RN, Latham MD, Pagliaccio D, Auerbach RP, Allen NB.   +5 more
europepmc   +1 more source

Digital biomarkers of anxiety disorder symptom changes: Personalized deep learning models using smartphone sensors accurately predict anxiety symptoms from ecological momentary assessments. [PDF]

Behav Res Ther, 2022
Jacobson NC, Bhattacharya S.
europepmc   +1 more source

Mechanistic Considerations for Battery Charging Protocol Design

Advanced Energy Materials, EarlyView.
This review bridges practical fast‐charging protocols with fundamental mechanisms of SOC‐dependent structural and compositional changes in electrode materials, kinetic limitations such as polarization and inhomogeneity, and heat generation characteristics shaped by protocol design.
Wenlong Li, Ayrton Yanyachi, Junyi Xia, Saravana Kuppan, Jigang Zhou, Yixian Wang, Yanfei Li, Piero Pianetta, Kejie Zhao, David Mitlin, Ofodike Ezekoye, Jie Xiao, Junmin Wang, Yijin Liu   +13 more
wiley   +1 more source

Harnessing Smartphone Sensors for Enhanced Road Safety: A Comprehensive Dataset and Review. [PDF]

Sci Data
Khandakar A, Michelson DG, Naznine M, Salam A, Nahiduzzaman M, Khan KM, Nagaratnam Suganthan P, Arselene Ayari M, Menouar H, Haider J.   +9 more
europepmc   +1 more source

A Novel Hybrid Gradient-Based Optimizer and Grey Wolf Optimizer Feature Selection Method for Human Activity Recognition Using Smartphone Sensors. [PDF]

Entropy (Basel), 2021
Helmi AM, Al-Qaness MAA, Dahou A, Damaševičius R, Krilavičius T, Elaziz MA.   +5 more
europepmc   +1 more source

Changes in Alcohol Retail Laws and Foot Traffic at Liquor Stores

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT We study how expanding alcohol availability at grocery and convenience stores affects consumer traffic in liquor stores by leveraging recent changes in state‐level alcohol distribution laws in a difference‐in‐difference quasi‐experimental design.
Nathan Palardy, Marco Costanigro, Joshua Berning, Jude Bayham   +3 more
wiley   +1 more source

Measuring activation during behavioral activation therapy: a proof-of-concept study using smartphone sensors and LLM-derived ratings in adolescents with anhedonia. [PDF]

NPP Digit Psychiatry Neurosci
Fisher H, Jaffe NM, Rahimi-Eichi H, Forbes EE, Pizzagalli DA, Baker JT, Webb CA.   +6 more
europepmc   +1 more source