Results 121 to 130 of about 236,046 (296)

A Centralized Multi-Agent DRL-Based Trajectory Control Strategy for Unmanned Aerial Vehicle-Enabled Wireless Communications

IEEE Open Journal of Vehicular Technology
Unmanned aerial vehicles (UAVs) are becoming increasingly popular as mobile base stations due to their flexible deployment and low-cost features, particularly for emergency communications, traffic offloading, and terrestrial communications infrastructure
Getaneh Berie Tarekegn, Rong-Terng Juang, Belayneh Abebe Tesfaw, Hsin-Piao Lin, Huan-Chia Hsu, Robel Berie Tarekegn, Li-Chia Tai   +6 more
doaj   +1 more source

A review of indoor channel modeling techniques for visible light communications

, 2018
Visible light communications (VLC)is a technology that uses the unregulated electromagnetic spectrum band between 380 and 780nm which offers an enormous potential of high speed communications for short distances, regardless of radio interference.
Ramirez-Aguilera, A. M., Guerra Yánez, Víctor, Pérez Jiménez, Rafael, Rabadán Borges, José Alberto, Lopez-Hernandez, F. J., Luna-Rivera, J. M.   +5 more
core   +1 more source

Dipole‐Manipulated Built‐In Electric Field Enables Ultrafast Charge Separation in Perylene Diimide Polymers for Photoelectrochemical Water Splitting

Advanced Science, EarlyView.
Molecular dipole engineering in dendritic perylene diimide polymers through nitrogen‐rich heterocyclic linkers amplifies the built‐in electric field, enabling sub‐picosecond charge separation and efficient multi‐electron accumulation. This structure–dynamics–performance relationship establishes a versatile design strategy for high‐performance organic ...
Ying‐Xin Qiao, Zicong Situ, Yi‐Jing Chen, Shuo‐Xiang Liu, Jing‐Lan Zhang, Xingqing Li, Luo‐Han Xie, Si‐Hang Xie, Qing‐Xiao Tong, Andong Xia, Zhuoran Kuang, Jing‐Xin Jian   +11 more
wiley   +1 more source

Implementation and Testing of V2I Communication Strategies for Emergency Vehicle Priority and Pedestrian Safety in Urban Environments

Sensors
This paper explores the development and testing of two Internet of Things (IoT) applications designed to leverage Vehicle-to-Infrastructure (V2I) communication for managing intelligent intersections.
Federica Oliva, Enrico Landolfi, Giovanni Salzillo, Alfredo Massa, Simone Mario D’Onghia, Alfredo Troiano   +5 more
doaj   +1 more source

User-Anonymous and Short-Term Conference Key Distribution System via Link-Layer Routing in Mobile Communications”, International Journal of Mobile Communications

, 2012
[[abstract]]There are occasions when some people carry their portable devices to a hotel room or office to hold a short-term conference over wireless networks.
黃明祥;Hwang, Min-Shiang;Ting-Yi Chang
core  

A novel generation scheme of ultra-short pulse trains with multiple wavelengths

, 2017
We demonstrate a novel scheme based on active mode locking combined with four-wave mixing (FWM) to generate ultra-short pulse trains at high repetition rate with multiple wavelengths for applications in various fields.
Xie, Xiaoping, Wang, Weiqiang, Feng, Huan, Si, Jinhai, Li, Lu, Hu, Hui (johnhuihui@opt.ac.cn), Hu, Hui, Han, Biao, Su, Yulong, Wen, Yu, Wang, Yishan   +10 more
core   +1 more source

Tumor‐Infiltrating mregDCs Restrain Anti‐Tumor Immunity in Early Relapse HCC

Advanced Science, EarlyView.
Tumor‐infiltrating mregDCs are regulated by the TNFR2‐non‐canonical NF‐κB axis, which is mediated by TNF‐α secreted by CD161+CD8+ T cells. These mregDCs recruit CD161+CD8+ T cells via the CCL20‐CCR6 axis, forming a positive feedback loop that enhances immunosuppression, promotes early recurrence of HCC, and further confirms TNFR2 as a key therapeutic ...
Zefan Zhang, Lin Ding, Yu Zhong, Haokang Feng, Linglong Huang, Waidong Huang, Chunqing Wang, Arne Östman, Beili Wang, Jian Zhou, Jia Fan, Wei Guo, Liang Wu, Yunfan Sun   +13 more
wiley   +1 more source

From Label‐Free Multiphoton Imaging to Pathological Reports: A Vision‐Language Breast Cancer Margin Pathological Diagnosis System

Advanced Science, EarlyView.
MarginPath is a novel vision‐language system that automates breast cancer margin assessment using a single label‐free multiphoton microscopy image. By integrating tumor‐associated collagen signatures with virtual H&E imaging, it generates accurate margin heatmaps and comprehensive diagnostic reports.
Shu Wang, Jingze Su, Xiahui Han, Deyong Kang, Xiao Zhang, Fei Xu, Changzu Liu, Junlin Pan, Xingfu Wang, Qiaohui Zhan, Aimin Wang, Feng Huang, Heping Cheng, Wenxi Liu, Ruolan Lin, Jianxin Chen   +15 more
wiley   +1 more source

Coherent optical short-reach communications [PDF]

, 2016
© 2016 Dr. Di CheOptical communication using high-speed on-off-keying by direct modulation (DM) and direct detection (DD) was one of the most inspiring breakthroughs for telecommunication in 1970s. The wide deployment of 2.5-Gb/s per wavelength submarine
Che, Di
core  

Mastication‐Induced Electrical Stimulation Activates Prg4+ Chondroprogenitors for Osteoarthritis Therapy

Advanced Science, EarlyView.
This study presents a ″trash‐to‐treasure″ strategy that converts harmful joint overloads into beneficial electrical cues. The biodegradable MagPie, by providing piezoelectrical stimulation and releasing Mg2+ during mastication, exerts synergistic pro‐regenerative and anti‐inflammatory effects on Prg4+ cells via the ECM‐mediated FAK‐PI3K‐Akt axis ...
Shi‐Yang Feng, Jing‐Rong Cheng, Yu Qin, Jie Lei, Chen‐Chen Gao, Hong‐Ying Fu, Li‐Ping Wu, Thanh D. Nguyen, Xu‐Liang Deng, Kai‐Yuan Fu, Yang Liu   +10 more
wiley   +1 more source