Optically Transparent Frequency Selective Surfaces with Wideband Capability for IoT Applications: A Polarization-Independent Double-Layer Design DOI Creative Commons
Ömer Faruk Günaydın, Sultan Can

Sensors, Journal Year: 2024, Volume and Issue: 24(14), P. 4724 - 4724

Published: July 21, 2024

This study proposes wide-band frequency selective surfaces (FSS) with polarization-independent characteristics that are tailored for IoT applications. The design consists of two different layers band-stop target key bands in sub-6 GHz: 3.7 GHz (n77) and 4.5 (n79), offering a 1.39 bandwidth spanning from 3.61 to 5.0 GHz. also presents double-layer structure WB property fractional 32%. Simulations have been conducted observe variations insertion loss across incident polarization angles ranging 0 60 degrees both TE TM modes the suggested FSS structures. These simulations demonstrate design's independence. Transparent polyvinyl chloride dielectric constant 2.77 thickness 1.48 mm has utilized as substrate material. optical transmittance is calculated be 96.7% Layer 1, 95.7% 2, 92.4% structure, these values were found higher compared studies literature. proposed well-suited applications due their high transparency, cost-effectiveness, robust high-performance capabilities suppression, features. results 3D full-wave measurement equivalent circuit model outcomes, good agreement between was observed.

Language: Английский

Lyapunov-based analysis and worm extinction in wireless networks using stochastic SVEIR model DOI
Abdulwasea Alkhazzan,

Jungang Wang,

Yufeng Nie

et al.

Alexandria Engineering Journal, Journal Year: 2025, Volume and Issue: 118, P. 337 - 353

Published: Jan. 23, 2025

Language: Английский

Citations

0
The Impact of Smart Cities On Sustainability: A Bibliometric Analysis DOI Creative Commons
Mücella Ateş

Revista de Gestão Social e Ambiental, Journal Year: 2025, Volume and Issue: 19(1), P. e011071 - e011071

Published: Feb. 3, 2025

Objectives: This study examines the relationship between smart cities and sustainability through bibliometric analysis, focusing on literature from 2010 to 2023 in Web of Science database. Theoretical Framework: Smart leverage information communication technologies (ICT) enhance environmental, social, economic sustainability. The analysis evaluates key terms, influential authors, geographical trends uncover how address goals. Method: In this study, method was used examine impacts Bibliometric is a for quantitatively analyzing scientific specific field, aiming identify trends, keywords, citation relationships, distributions within literature. Results Discussion: findings highlight positive areas such as energy efficiency, carbon emission reduction, improved urban mobility systems. However, also identifies significant challenges, including barriers social sustainability, concerns over data security, high implementation costs, which hinder broader adoption city projects. By emphasizing role ICT tackling global issues, provides novel framework understanding benefits limitations cities. It uniquely gaps integration challenges faced developing countries, suggesting further exploration. Research Implications: comprehensive offers fresh insights into contribute goals while urging future research identified opportunities improvement. Originality/Value: unique examining patterns 2023. highlights critical achieving addressing underexplored like countries. identifying both initiatives, valuable policymakers planners, paving way more inclusive sustainable development.

Language: Английский

Citations

0
Exploring Big Data Applications in Sustainable Urban Infrastructure: A Review DOI Creative Commons
David Victor Ogunkan,

Stella Kehinde Ogunkan

Urban Governance, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

Citations

0
The Crucial Role of Analog Layout in Revolutionizing 5G Connectivity DOI Open Access

Kavya Gaddipati

International Journal of Scientific Research in Computer Science Engineering and Information Technology, Journal Year: 2025, Volume and Issue: 11(1), P. 2437 - 2445

Published: Feb. 10, 2025

The rapid evolution of 5G technology has positioned analog layout design as a pivotal element in advancing modern telecommunications infrastructure. Through innovative approaches high-frequency considerations, circuit optimization techniques, and expert-driven methodologies, enabled significant breakthroughs communication systems. article mobile edge computing with vehicular networks, coupled advancements mmWave phased array systems, transformed the landscape wireless connectivity. Performance enhancements signal integrity, power efficiency, thermal management have been achieved through sophisticated strategies. Machine learning applications revolutionized automation capabilities while maintaining critical role human expertise. implementation ultra-low voltage techniques advanced networking protocols extended impact beyond traditional into Internet Things smart city applications. These developments laid foundation for next-generation enabling enhanced reliability, reduced latency, improved resource utilization across diverse from autonomous vehicles to massive sensor networks.

Language: Английский

Citations

0
Internet of vehicles for smart cities DOI
Mariusz Kostrzewski

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 365 - 380

Published: Jan. 1, 2025

Language: Английский

Citations

0
Interference Assessment on Sub-6GHz Wi-Fi Systems DOI
Eduardo Chancay, Manuel Montaño, María Antonieta Alvarez

et al.

Communications in computer and information science, Journal Year: 2025, Volume and Issue: unknown, P. 201 - 211

Published: Jan. 1, 2025

Citations

0
Networking Data Engineering: Bridging the Gap Between Communication and Data Processing DOI
Yunyong Guo, Baolei Guo, Ning Guo

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
Enhancing IoT Scalability and Interoperability Through Ontology Alignment and FedProx DOI Creative Commons

Chaimae Kanzouai,

Soukaina Bouarourou, Abderrahim Zannou

et al.

Future Internet, Journal Year: 2025, Volume and Issue: 17(4), P. 140 - 140

Published: March 25, 2025

The rapid expansion of IoT devices has introduced major challenges in ensuring data interoperability, enabling real-time processing, and achieving scalability, especially decentralized edge computing environments. In this paper, an advanced framework FedProx with ontology-driven standardization is proposed, which can meet such comprehensively. On the one hand, it guarantee semantic consistency across different kinds using unified ontology, so that from multiple sources could be seamlessly integrated; on other solves non-IID issues limited resources servers by FedProx. Experimental findings indicate outperforms FedAvg, a remarkable accuracy level 89.4%, having higher convergence rates, attaining 30% saving communication overhead through gradient compression. addition, ontology alignment procedure yielded 95% success rate, thereby uniform preprocessing domains, including traffic monitoring parking management. model demonstrates outstanding scalability flexibility to new devices, while maintaining high performance during evolution. These highlight its great potential for deployment smart cities, environmental monitoring, IoT-based ecosystems, creation more efficient integrated solutions these areas.

Language: Английский

Citations

0
Development of Renewable Energy Sources in Poland and Stability of Power Grids—Challenges, Technologies, and Adaptation Strategies DOI Creative Commons
Konrad Henryk Bachanek, Wojciech Drożdż,

Maciej Kolon

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(8), P. 2036 - 2036

Published: April 16, 2025

The development of renewable energy sources (RESs) is a key element the policy in Poland and European Union. transition to green aims reduce greenhouse gas emissions, enhance security, decrease dependence on fossil fuels. In Poland, RES sector, particularly photovoltaics wind energy, growing, which changing operation generation. However, increasing share RESs mix presents challenges for stability national power grid. This study focuses because crucial country’s transition. striving achieve its climate goals fuels, policy. support sustainable Poland. (1) aim this article was analyze impact grids identify issues, review adaptation strategies. (2) Methods such as literature statistical data analysis were used build scenarios. (3) sector being developed through application both policies. main are photovoltaics. (4) introduction technologies storage systems, smart grids, advanced management strategies response posed by relation

Language: Английский

Citations

0
Optimizing Priority Queuing Systems with Server Reservation and Temporal Blocking for Cognitive Radio Networks DOI Creative Commons
Jnana Ranjan Behera, Agbotiname Lucky Imoize, Sudhansu Sekhar Singh

et al.

Telecom, Journal Year: 2024, Volume and Issue: 5(2), P. 416 - 432

Published: May 31, 2024

In the domain of cognitive radio (CR), unlicensed users have opportunity to efficiently use available spectrum bands without interfering with licensed primary (PUs). Our study addresses challenge secondary user (SU) shortage due high arrival rates users. We propose two models aimed at improving average total waiting time for SUs in such scenarios. These incorporate non-acquired and preemptive priority mechanisms within M/D/1 model a PU delay system. Through quantitative evaluations Monte Carlo simulations, we evaluate performance these models. findings show significant improvements both PUs SUs, especially under scheme. Furthermore, explore context real-time systems, considering limited buffer capacity types. This further improves schemes. contribution lies providing effective solutions mitigate SU shortages CR networks, insight into priority-based approaches system considerations.

Language: Английский

Citations

2