Results 41 to 50 of about 26,636 (252)

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

Advanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou, Zhiqiang Chen, Yuanbiao Ma, Zhiqiang Tang, Qianqian Wang   +4 more
wiley   +1 more source

Multi-Carrier Modulation: An Evolution From Time-Frequency Domain to Delay-Doppler Domain

IEEE Transactions on Communications
The recently proposed orthogonal delay-Doppler division multiplexing (ODDM) modulation, which is a delay-Doppler (DD) domain multi-carrier (DDMC) modulation scheme based on the DD domain orthogonal pulse (DDOP), is studied. We first revisit the linear time-varying (LTV) channel model for the wireless channel, and review the conventional multi-carrier ...
Hai Lin, Jinhong Yuan, Wei Yu, Jingxian Wu, Lajos Hanzo   +4 more
openaire   +2 more sources

Cyclic Delay-Doppler Shift: A Simple Transmit Diversity Technique for Delay-Doppler Waveforms in Doubly Selective Channels

, 2023
Delay-Doppler waveform design has been considered as a promising solution to achieve reliable communication under high-mobility channels for the space-air-ground-integrated networks (SAGIN).
Tang, Yanqun, Zhou, Yu, Xiong, Jiaojiao, Wei, Xizhang, Yin, Haoran, Zhang, Chi, Zhang, Di   +6 more
core  

Design and Modeling of a High‐Displacement, Skin‐Integrated Flexible Electromagnetic Actuator for Haptic Interfaces in Virtual Reality

Advanced Robotics Research, EarlyView.
A flexible, skin‐integrated electromagnetic actuator is developed for wearable virtual/augmented reality (VR/AR) haptic systems. A tunable design model enables control over displacement and resonance frequency. The system is validated through a custom VR application with a 6 × 4 actuator array, demonstrating real‐time, spatially targeted tactile ...
Naji Tarabay, Alexandra Zhang Jiang, Ziteng Liu, Rachel Villamor, Derek Cha, Ananya Renuka Balakrishna, Tianshu Liu, Priyanshu Agarwal, Rainer Dömer, Camilo Velez   +9 more
wiley   +1 more source

Tropomyosin 1 Promotes Platelet Adhesion and Clot Contraction Separate from Its Roles in Developmental Hematopoiesis

Advanced Science, EarlyView.
ABSTRACT Genome‐wide association studies (GWAS) link the Tropomyosin 1 (Tpm1) locus to quantitative blood trait variation, but related mechanisms are unclear. Tpm1 encodes an actin‐binding protein that regulates actin filament diversity, cell adhesion, signaling, and actomyosin contractility.
Po‐Lun Kung, Victor Tsao, Alina D Peshkova, Oscar A. Marcos‐Contreras, Kim Ha, Brian M Dulmovits, Nkemdilim Okoli, Anvi Sinha, Gennadiy Fonar, Rong Qiu, Rolf D Bates, Janelle Yeboah, Carson Shalaby, Tyler Truex, Soomin Jeong, Edna C Hardeman, Peter W Gunning, Vladimir R Muzykantov, Jacob W Myerson, Christopher S Thom   +19 more
wiley   +1 more source

Compressed Sensing Channel Estimation for OTFS Modulation in Non-Integer Delay-Doppler Domain [PDF]

2021 IEEE Global Communications Conference (GLOBECOM), 2021
This is the author's self-archive preprint of a paper accepted in IEEE GLOBECOM ...
openaire   +2 more sources

Low Complexity Channel Estimation for OTFS Modulation with Fractional Delay and Doppler

, 2021
We consider the problem of accurate channel estimation for OTFS based systems with few transmit/receive antennas, where additional sparsity due to large number of antennas is not a possibility. For such systems the sparsity of the effective delay-Doppler
Mohammed, Saif Khan, Khan, Imran Ali
core  

A Skull Bone Marrow‐to‐Brain Axis Links Osteoblastic Activity to Myeloid Cell Trafficking, Cerebral Blood Flow, and Cognition in Alzheimer's Progression

Advanced Science, EarlyView.
This study reveals that Alzheimer's disease–linked APP expression in bone‐forming cells drives skull bone marrow remodeling and alters its vascular connections to the brain. These changes disrupt immune cell trafficking, cerebral blood flow, and cognition. Targeting bone marrow macrophages restores brain function, highlighting a previously unrecognized
Lei Xiong, Dong Sun, Hao‐Han Guo, Daehoon Lee, Zhipeng Liu, Lin Mei, Wen‐Cheng Xiong   +6 more
wiley   +1 more source

Low-Complexity Channel Estimation for OTFS via Coordinate Descent Exploiting Delay-Domain Sparsity

IEEE Open Journal of the Communications Society
Orthogonal time frequency space (OTFS) modulation has attracted considerable attention for high-mobility wireless communications; however, accurate channel estimation (CE) remains challenging in the presence of fractional Doppler shifts.
Masahiro Maruyama, Takanori Hara, Kenichi Higuchi   +2 more
doaj   +1 more source

Delay-Doppler Domain Channel Measurements and Modeling in High-Speed Railways

IEEE Transactions on Wireless Communications
13 pages, 11 ...
Hao Zhou 0012, Yiyan Ma, Dan Fei, Weirong Liu, Zhengyu Zhang, Mi Yang 0001, Guoyu Ma, Yunlong Lu, Ruisi He, Guoyu Wang, Cheng Li, Zhaohui Song, Bo Ai 0001   +12 more
openaire   +2 more sources