Results 131 to 140 of about 3,145 (290)

Handover Strategy for LEO Satellite Networks Using Bipartite Graph and Hysteresis Margin

IEEE Open Journal of the Communications Society
The low Earth orbit (LEO) satellite constellation has become a highly effective solution for non-terrestrial networks (NTN), offering reliable, uninterrupted, and high-speed global communication. However, the rapid movement of LEO satellites results in a
Sahar Eydian, Maryam Hosseini, Gunes Karabulut Kurt   +2 more
doaj   +1 more source

Multiscale Perspectives on Perovskite Instability: From Atomistic Deformation to Device Degradation in Perovskite Solar Cells

Advanced Energy Materials, EarlyView.
Multiscale perspectives on how excess charges in soft lead halide perovskites induce operational instability in photovoltaic devices are presented. Localized carriers formed under thermodynamic non‐equilibrium states modify atomistic interactions and drive lattice distortions, accelerating device degradation.
Joo‐Hong Lee, Donghyeon Lee, Seoyoon Lee, Jin‐Wook Lee, Mansoo Choi, Min‐cheol Kim, Namyoung Ahn   +6 more
wiley   +1 more source

Dual Impact of Long‐Lived Localized Carriers Induced by Restricted Hole Transfer in Organic Photovoltaics and Photocatalytic Hydrogen Evolution

Advanced Energy Materials, EarlyView.
This work clarifies why organic semiconductors perform differently in photovoltaic devices and photocatalytic nanoparticles. By examining D18:Y5 and PM6:Y6 systems, we show how aggregation, exciton lifetime, and interfacial charge transfer behavior govern energy‐conversion pathways.
Gayoung Ham, Sanghyeok An, Wooteak Jung, Hyun Min Kwon, Seonghyeon Kang, Jaehyuk Lee, Sowon Kim, Changwoo Park, Damin Lee, Young Yong Kim, Sungjin Jo, Chang Yun Son, Sae Byeok Jo, Dae Sung Chung, Hyojung Cha   +14 more
wiley   +1 more source

Overview of Dynamic Spectrum Sharing Between LEO Satellites and Mobile Networks: Enabling Seamless Connectivity and Coexistence in 6G

IEEE Access
In recent years, we have witnessed an acceleration in the growth of wireless communication technologies, particularly Low Earth Orbit (LEO) satellite constellations, with the direction towards integration with terrestrial networks in the domain of sixth ...
Yasir Ahmed, David Grace
doaj   +1 more source

Predicting Performance of Hall Effect Ion Source Using Machine Learning

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This study introduces HallNN, a machine learning tool for predicting Hall effect ion source performance using a neural network ensemble trained on data generated from numerical simulations. HallNN provides faster and more accurate predictions than numerical methods and traditional scaling laws, making it valuable for designing and optimizing Hall ...
Jaehong Park, Guentae Doh, Dongho Lee, Youngho Kim, Changmin Shin, Su‐Jin Shin, Young‐Chul Ghim, Sanghoo Park, Wonho Choe   +8 more
wiley   +1 more source

Integration of 5G, 6G and IoT with Low Earth Orbit (LEO) networks: Opportunity, challenges and future trends

Results in Engineering
The rapid growth of the massive smart Internet of Things (IoT) with mobile connections, the enhanced Mobile Broadband (eMBB) and the high demand for building a connected and intelligent world increase the probability of mobile satellite systems to be a ...
Ibraheem Shayea, Ayman A. El-Saleh, Mustafa Ergen, Bilal Saoud, Riad Hartani, Derya Turan, Adnan Kabbani   +6 more
doaj   +1 more source

Biomimetic 3D Tactile Sensor System With Neuromorphic Encoding for Fascicle‐Level Feedback

Advanced Intelligent Systems, EarlyView.
A 3D biomimetic tactile sensor system converts skin‐like mechanical interactions into neural stimulation‐ready spike patterns. Embedded slow‐ and fast‐adapting sensors distinguish sustained pressure from transient touch, while neuromorphic encoding preserves their temporal signatures.
Minseok Kim, Jaeu Park, Minseok Kang, Yongwoo Kim, Sanghoon Lee   +4 more
wiley   +1 more source

Nanostructured Deep Eutectic Systems in Healthcare: From Bioactive Solvents to Intelligent Biointerfaces, Wearables, and AI‐Driven Design

Advanced NanoBiomed Research, EarlyView.
Beyond the green solvent paradigm, this review redefines Deep Eutectic Systems (DES) as programmable supramolecular nanoassemblies. We survey their biomedical convergence: stabilizing thermolabile mRNA to enable cold chain‐free logistics, reshaping transdermal microneedle delivery, enabling long‐term wearables via eutectogels, and utilizing Generative ...
Jeesu Moon, Min Seo Kim, Jae‐Seung Lee
wiley   +1 more source

Physical cell identity planning for access interference avoidance in large-scale LEO satellite networks

天地一体化信息网络
LEO satellite communication networks, featuring wide coverage, low latency, and flexible deployment, have become an important part of integrated space-terrestrial communication system.
Yang Fei, Zhang Xing, Wang Wenbo
doaj   +2 more sources

Unlocking Potential in LEO Satellites Communications Through Spatial Modulation and Space Shift Keying

IEEE Open Journal of the Communications Society
As future wireless networks demand higher throughput and lower latency, Low Earth Orbit (LEO) satellites have become essential to supplement terrestrial infrastructure.
Chaorong Zhang, Benjamin K. Ng, Yuyan Liu, Ke Wang, Chan-Tong Lam   +4 more
doaj   +1 more source