Results 81 to 90 of about 1,981,914 (281)

A Treatise on the Taxonomy of Reconfigurable Intelligent Surfaces

IEEE Open Journal of the Communications Society
This work presents a comprehensive taxonomy of reconfigurable intelligent surfaces (RISs) across its many variants in a systematically-structured form. The taxonomy encapsulates the different RIS categories based on the RIS components, channel estimation
Sherif Adeshina Busari, Ifiok Otung, Savas Konur, Raed Abd-Alhameed   +3 more
doaj   +1 more source

Recent Progress in Reconfigurable and Intelligent Metasurfaces: A Comprehensive Review of Tuning Mechanisms, Hardware Designs, and Applications

Advanced Science, 2022
Intelligent metasurfaces have gained significant importance in recent years due to their ability to dynamically manipulate electromagnetic (EM) waves. Their multifunctional characteristics, realized by incorporating active elements into the metasurface ...
Yasir Saifullah, Yejun He, Amir Boag, Guo‐Min Yang, Feng Xu   +4 more
doaj   +1 more source

Clinical Validation of Artificial Intelligence (AI)‐based Cartilage Segmentation Predicting Knee Replacement

Arthritis Care &Research, Accepted Article.
Objective For cartilage morphology to serve as a scalable endpoint in clinical trials, analyses should be performed automatically without human interaction. To clinically validate artificial intelligence (AI)‐based analysis, we studied cartilage loss from MRI prior to knee replacement.
Felix Eckstein, David J. Hunter, C. Kent Kwoh, Wolfgang Wirth   +3 more
wiley   +1 more source

Adaptive personalized over-the-air federated learning with reflecting intelligent surfaces

npj Wireless Technology
Over-the-air federated learning (OTA-FL) unifies communication and model aggregation by leveraging the superposition property of the wireless medium, enabling bandwidth-efficient learning via simultaneous transmission of model updates.
Jiayu Mao, Aylin Yener
doaj   +1 more source

Reinforcement Learning for Resilient Aerial-IRS Assisted Wireless Communications Networks in the Presence of Multiple Jammers

IEEE Open Journal of the Communications Society
The evolving landscape of beyond 5G and 6G wireless communication systems in smart urban environments faces numerous interference-related challenges posed by legitimate and illicit devices.
Zain Ul Abideen Tariq, Emna Baccour, Aiman Erbad, Mounir Hamdi   +3 more
doaj   +1 more source

Automated Hand Flexor Tendon–Thickness Measurement in Systemic Sclerosis

Arthritis Care &Research, EarlyView.
Objective Systemic sclerosis (SSc) can affect flexor tendons, contributing to hand function problems and reduced quality of life. Tendon changes are currently assessed with ultrasonography and measured manually, a time‐consuming process prone to interobserver variability.
Mark Greveling, Ties van het Erve, Yvette van de Berg, Simon Mastbergen, Julia Spierings   +4 more
wiley   +1 more source

Double-Faced Active Intelligent Reflecting Surfaces-Assisted Symbiotic Radio Communications

IEEE Open Journal of Vehicular Technology
With the extensive deployment of Internet-of-Things (IoT) in next generation wireless systems, the problems of energy efficiency and battery life become exacerbated, highlighting the pressing need for innovative solutions.
Ahmed M. Benaya, Mohamed S. Hassan, Mahmoud H. Ismail, Taha Landolsi   +3 more
doaj   +1 more source

Engineering of Intelligent Reflecting Surfaces: Reflection Locality and Angular Stability

IEEE Transactions on Antennas and Propagation
Reconfigurable intelligent surfaces (RISs) are electromagnetically passive controllable structures, deflecting the incident wave beam in directions predefined by the control signal. A usual way to design RIS based on metasurfaces (MSs) is based on the application of the approximation in which the reflective properties of a uniform MS are attributed to ...
Javad Shabanpour, Vladimir Lenets, Geoffroy Lerosey, Sergei Tretyakov, Constantin Simovski   +4 more
openaire   +3 more sources

Non-Orthogonal Multiple Access (NOMA) with multiple intelligent reflecting surfaces

, 2021
In this paper, non-orthogonal multiple access (NOMA) networks assisted by multiple intelligent reflecting surfaces (IRSs) with discrete phase shifts are investigated, in which each user device (UD) is served by an IRS to improve the quality of the ...
Teh, Kah Chan, Karagiannidis, George K., Liu, Yuanwei, Cheng, Yanyu, Li, Kwok Hung   +4 more
core   +1 more source

NFDI MatWerk Ontology (MWO): A BFO‐Compliant Ontology for Research Data Management in Materials Science and Engineering

Advanced Engineering Materials, EarlyView.
This article presents the NFDI‐MatWerk Ontology (MWO), a Basic Formal Ontology‐based framework for interoperable research data management in materials science and engineering (MSE). Covering consortium structures, research data management resources, services, and instruments, MWO enables semantic integration, Findable, Accessible, Interoperable, and ...
Hossein Beygi Nasrabadi, Ebrahim Norouzi, Kostiantyn Hubaiev, Jörg Waitelonis, Harald Sack   +4 more
wiley   +1 more source