Results 51 to 60 of about 38,749 (262)

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

Advanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja, Mikko Kokkonen, Niina Halonen, Sami Myllymäki, Umair Rafique, Mandeep Singh, Ossi Laitinen, Heli Jantunen, Kristiina Oksman, Henrikki Liimatainen   +9 more
wiley   +1 more source

RASID: a secure UAV-based platform for intelligent traffic accident assessment with cryptographic verification and AI-driven analysis

Frontiers in Computer Science
Traffic accident management typically deals with delays from the time an accident is reported to the time of the actual submission of the final report, and this ultimately causes traffic congestion. The process can be done in a significantly shorter time
Albandari Alsumayt, Arwa Almalki, Fatimah Almushraf, Hams Almansori, Lara Alfaraj, Sara Almulla, Zahrah Aljanabi, Sammar Algothami   +7 more
doaj   +1 more source

Flexible Tactile Actuator Arrays With Integrated Electroosmotic Pumps for Wearable Haptic Systems

Advanced Materials Technologies, EarlyView.
1 ×$\times$ 9 and 4 ×$\times$ 4 flexible tactile actuator arrays integrating electroosmotic pumps are developed to deliver pressure and vibration feedback on wearable platforms. Their thin, compliant structure conforms seamlessly to curved body surfaces, providing intimate contact and enhanced haptic sensations.
Heejin Yu, Joonbum Bae
wiley   +1 more source

Lead‐Free Chiral Hybrid Metal Halides for Circularly Polarized Light‐Emitting Diodes

Advanced Optical Materials, EarlyView.
Lead‐free chiral hybrid metal halides provide a versatile platform for realizing chiroptical responses through chiral modulation of metal–halide frameworks with diverse dimensionalities, induces inversion‐symmetry breaking and enables dissymmetric excited‐state transitions toward efficient circularly polarized luminescence and electroluminescence. This
Kun Zhu, Li Wan
wiley   +1 more source

Optimization of Computing and Networking Resources of a Hadoop Cluster Based on Software Defined Network

IEEE Access, 2018
In this paper, we discuss some challenges regarding the Hadoop framework. One of the main ones is the computing performance of Hadoop MapReduce jobs in terms of CPU, memory, and hard disk I/O. The networking side of a Hadoop cluster is another challenge,
Ali Khaleel, Hamed Al-Raweshidy
doaj   +1 more source

Nanoporous Scaffold‐Assisted Ligand‐Free CsPbBr3 Quantum Dots for Bright and Ultrapure Green Light‐Emitting Diodes

Advanced Optical Materials, EarlyView.
Networks of confined CsPbBr3 perovskite quantum dots, synthesised within nanoporous silica scaffolds using precursors containing different combinations of butylammonium bromide and crown ether additives, enable electroluminescent devices with 400‐fold enhanced charge injection and transport with respect to control devices, yielding ultrapure green ...
Carlos Romero‐Pérez, Zhongcheng Yuan, Mauricio E. Calvo, Henry J. Snaith, Hernán Míguez   +4 more
wiley   +1 more source

A Novel 5G PMN-Driven Approach for AI-Powered Irrigation and Crop Health Monitoring

IEEE Access
Precision agriculture is a crucial field that addresses food security for the growing population. This article presents an innovative approach merging deep learning with a 5G Private Mobile Network (PMN) to construct a smart agriculture system.
Tang Nguyen-Tan, Quan Le-Trung
doaj   +1 more source

Deterministic Integration of Quantum Emitters and Optical Cavities in a Van Der Waals Crystal

Advanced Optical Materials, EarlyView.
The work demonstrates fabrication of Circular Bragg Grating (CBG) cavities with embedded emitters in hBN. The cavities are fabricated around a pre‐characterised quantum emitter. The integrated platform enables light matter interaction and access to brighter emitters and spins in hBN.
James Liddle‐Wesolowski, Otto Cranwell Schaeper, Nathan Coste, Benjamin Whitefield, Evan Williams, Helen Zhi Jie Zeng, Mehran Kianinia, Anastasiia Zalogina, Igor Aharonovich   +8 more
wiley   +1 more source

TwinGuard: A Supervised Machine Learning Framework for DoS Attack Detection in IoT-Enabled Digital Twins Using Random Forest and Feature Selection Optimization

IEEE Access
Digital Twin (DT) technology enables real-time monitoring of Internet of Things (IoT)-integrated systems but faces severe threats from Denial-of-Service (DoS) attacks, which compromise data accuracy and operational stability.
Norah Alhamam, M. M. Hafizur Rahman, Ahmed Aljughaiman   +2 more
doaj   +1 more source

Mini-Base Station: A Novel Smart Virtual eNB for 5G and Beyond Mobile Networks

IEEE Access, 2019
This paper presents a proposal for an innovative base station for 5G and beyond for a mobile network system based on the evolved packet system (EPS). Functions of EPS elements can be achieved by the SVeNB, according to the type of function or service and
Fouad A. Yaseen, Hamed S. Al-Raweshidy
doaj   +1 more source