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40 resultados encontrados.

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Radio-Wave Propagation Model for UHF Band in Different Climatic Conditions with Dyadic Green’s Function
Artículo
Acceso abierto Artículo DOAJ
Cristiane R. Gomes Jr et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
AbstractThis article proposes a deterministic radio propagation model using dyadic Green's function to predict the value of the electric field. Dyadic is offered as an efficient mathematical tool which has symbolic simpl...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Radiology Report Generation Using Deep Learning and Web-Based Deployment for Chest X-Ray Analysis
Artículo
Acceso abierto Artículo DOAJ
David Agbolade et al · MMU Press · 2026 · ISSN 2821-370X
The huge rise in the number of medical images has caused a major problem in radiology departments. Radiologists are now working harder than ever, which affects the quality of their diagnoses and patient care. It takes 15...
LCC LCC:Electronic computers. Computer science; TENDOkluZm9ybWF0aW9uIHRlY2hub2xvZ3k~Idioma eng
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Open Access
Demonstration of 256 QAM 10 Gbps Signal Transmission over 570 km Fiber-based NG Radio over Fiber System
Artículo
Acceso abierto Artículo DOAJ
Hasan k. Al Deen et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · 2024 · ISSN 2179-1074
Abstract The rapid development of the Fifth Generation (5G) networks encourages researchers to improve the Radio over Fiber (RoF) technique to achieve data rates of 10 Gbps and beyond. That led to a significant increase ...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Geometry optimization for application of radio frequency signals on diamond samples
Artículo
Acceso abierto Artículo DOAJ
Ricardo R. Wolf Cruz et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
This work describes the design and optimization of a printed circuit board containing a rectangular half-loop coil designed to apply radio frequency signals on micrometric diamond crystals. The structure was optimized to...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Implementation of a Spectrum Analyzer Using the Software-Defined Radio Concept
Artículo
Acceso abierto Artículo DOAJ
Paulo V. A. Freitas et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · 2021 · ISSN 2179-1074
Abstract The software-defined radio has been allowing engineers the possibility of implementing operations on software that were previously only possible to be performed through hardware. With the continuous increase in ...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Machine learning vs. radiomics for discriminating atypical cartilaginous tumors from benign enchondromas on MRI
Artículo
Acceso abierto Artículo DOAJ
Simon Johannes Joham et al · BMC · 2026 · ISSN 1475-925X
Abstract Background Enchondromas (EC) present cartilaginous tumors that are difficult to differentiate from their intermediate counterpart, atypical cartilaginous tumors (ACT). Histologically, tumor distinction of these ...
LCC TENDOk1lZGljYWwgdGVjaG5vbG9neQ~~Idioma eng
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Open Access
Omni-Swin3D: A radiomics-aware architecture for robust lung cancer diagnosis
Artículo
Material complementario disponible Artículo DOAJ
Rui Xu et al · Elsevier · 2026 · ISSN 1110-0168
Benign–malignant classification of pulmonary nodules from chest computed tomography (CT) is essential for early lung cancer screening and for reducing unnecessary biopsies and follow-up examinations, yet it remains cha...
LCC LCC:Engineering (General). Civil engineering (General)Idioma eng
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Application of the Finite-Difference Frequency-Domain (FDFD) method on radiowave propagation in urban environments
Artículo
Acceso abierto Artículo DOAJ
Cláudio Garcia Batista et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
Abstract In this work a Finite-Difference Frequency-Domain (FDFD) propagation method for complex urban environments is proposed. The formulation starts from the discretization of the Helmholtz equation for the magnetic f...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Effect of Weather Condition on QoCS Beam of Downlink Microwave Radio Signals for High-Definition Digital Terrestrial Link over Abuja, Nigeria
Artículo
Acceso abierto Artículo DOAJ
Joseph S. Ojo et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · 2025 · ISSN 2179-1074
Abstract High-Definition Digital Terrestrial Television (HDDTT) replaces analogue, requiring further research on propagation links due to atmospheric variables potentially disrupting signals during uplink and downlink re...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Spatiotemporal Analysis of Tropospheric Variability Using GNSS Radio Occultation: A Decadal Study
Artículo
Acceso abierto Artículo DOAJ
N. Manikkavasagam et al · Copernicus Publications · 2026 · ISSN 1682-1750
Global Navigation Satellite System Radio Occultation (GNSS-RO) offers a unique means of retrieving vertical atmospheric profiles with high precision and global coverage. This study investigates the spatiotemporal charact...
LCC TENDOlRlY2hub2xvZ3k~; LCC:Engineering (General). Civil engineering (General); TENDOkFwcGxpZWQgb3B0aWNzLiBQaG90b25pY3M~Idioma eng
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Open Access
A Runtime Safety Copilot for AI-Native O-RAN: Predictive Verification and Fail-Safe Enforcement in Near-RT RIC Control Loops
Artículo
Material complementario disponible Artículo DOAJ
Md Asef Jawad et al · IEEE · 2026 · ISSN 2169-3536
Sixth-generation (6G) mobile networks are expected to be AI-native by design, with intelligence embedded directly into the Radio Access Network (RAN) control loop through architectures such as O-RAN, near-real-time RAN I...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Material complementario
3PS-RAN: A Real-Time Framework for Securing the O-RAN RACH Against DDoS Attacks Toward NextG
Artículo
Material complementario disponible Artículo DOAJ
Nurullah Aksu et al · IEEE · 2026 · ISSN 2169-3536
Even with the introduction of additional security features, the progression toward 6G and Open Radio Access Network (O-RAN) architectures expands security risks, increasing both the scale and complexity of mobile network...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
Material complementario disponibleEl enlace apunta a material asociado, anexos, tablas, datos o página complementaria. No se marca como libro/texto completo.
Material complementario
Advances in hydro-mechanical behaviors of buffer materials under effect of technological gaps
Artículo
Acceso abierto Artículo DOAJ
CHEN Yong-gui 1, JIA Ling-yan 1, YE Wei-min 1, CUI Yu-jun 1, 2, CHEN Bao 1, WANG Ju 3 · Editorial Office of Chinese Journal of Geotechnical Engineering · 2017 · ISSN 1000-4548
The self-sealing and self-healing behaviors of technological gaps in a high-level radioactive waste repository are analyzed. The systematical findings are summarized based on the previous studies on the effects of techno...
LCC LCC:Engineering geology. Rock mechanics. Soil mechanics. Underground constructionIdioma eng
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Open Access
Choosing Clutter Heights in ITU-R P.1812 Recommendation for LoRaWAN Link Budget
Artículo
Acceso abierto Artículo DOAJ
Bryan da S. Duarte et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · 2025 · ISSN 2179-1074
Abstract The Internet of Things (IoT) encompasses a diverse array of solutions with applications ranging from smart cities to environmental monitoring and industrial processes. In this context, communication techniques t...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Internet of Things 36-rotor Multicopter for Ionizing Radiation Surveying
Artículo
Material complementario disponible Artículo DOAJ
Svetoslav Zabunov et al · Embry-Riddle Aeronautical University · 2021 · ISSN 2374-6793
This paper presents an Internet of things 36-rotor unmanned aerial vehicle suitable for radiological surveying of buildings and facilities. The design of the 36-rotor multicopter platform is disclosed. The aircraft is us...
LCC LCC:Motor vehicles. Aeronautics. AstronauticsIdioma eng
Material complementario disponibleEl enlace apunta a material asociado, anexos, tablas, datos o página complementaria. No se marca como libro/texto completo.
Material complementario
Optimum Positioning of Base Station for Cellular Service Devices Using Discrete Knowledge Model
Artículo
Acceso abierto Artículo DOAJ
Cristiane R. Gomes et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · 2020 · ISSN 2179-1074
Abstract A good wireless network design depends on technical and financial viability and a number of other criteria that must be met. Following the emergence of new technologies and services, such as 5G transmission and ...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Therapeutic Potentials of Silver Nanoparticle Complex of α-Lipoic Acid
Artículo
Acceso abierto Artículo DOAJ
Lakshmy Ramachandran et al · SAGE Publishing · 2011 · ISSN 1847-9804
Silver (SN) nanoparticles were re‐dispersed in aqueous solution of Pluronic F127 and complexed with the antioxidant, alpha‐ Lipoic acid (LA). The nanoparticle ‐ LA complex (SN‐LA) was characterize...
LCC LCC:Materials of engineering and construction. Mechanics of materials; TENDOlRlY2hub2xvZ3k~Idioma eng
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Open Access
A novel Antarctic Sea-Ice Velocity Retrieval Framework Based on FY-3D/MWRI Imagery
Artículo
Acceso abierto Artículo DOAJ
Shenbo Fu et al · IEEE · 2026 · ISSN 1939-1404
Sea-ice motion plays a pivotal role in the variability of the Antarctic climate system by modulating the atmosphere–ocean fluxes and the ocean freshwater budget. Due to the variability of the ice surface, snow&#x2...
LCC LCC:Ocean engineering; LCC:Geophysics. Cosmic physicsIdioma eng
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Open Access
Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences
Artículo
Acceso abierto Artículo DOAJ
Marcelo Molina Silva et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · 2019 · ISSN 2179-1074
Abstract This paper presents an evaluation of multicarrier channel sounding techniques using different random and pseudo-random sequences to modulate the OFDM sounding signal. The Random (Rand), Pseudo-Noise (PN) and Zad...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Implementation of a Multi-Gbit/s and GFDM-based Optical-Wireless 5G Network
Artículo
Acceso abierto Artículo DOAJ
R. M. Borges et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
Abstract We report the implementation of an optical-wireless 5G network based on generalized frequency division multiplexing (GFDM) and multi-Gbit/s communication. Dual-drive Mach-Zehnder modulator was employed, enabling...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma eng
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Open Access
Numerical and empirical investigations of the effect of propagation channel on modulation error ratio in UHF broadcasting systems
Artículo
Acceso abierto Artículo DOAJ
Shahram Hosseinzadeh et al · Elsevier · 2026 · ISSN 1110-0168
This paper presents a combined numerical and empirical investigation of how propagation channel conditions shape Modulation Error Ratio (MER) in UHF DVB-T broadcasting. A MATLAB/Simulink DVB-T physical-layer model is ext...
LCC LCC:Engineering (General). Civil engineering (General)Idioma eng
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Open Access
Adsorption and Exchangeability of Fibronectin and Serum Albumin Protein Corona on Annealed Polyelectrolyte Multilayers and Their Consequences on Cell Adhesion
Artículo
Material complementario disponible Artículo CONICET Digital
Muzzio, Nicolás Eduardo et al · Wiley-VCH · 2019 · ISSN 2196-7350
Polyelectrolyte multilayers (PEMs) based on biopolyelectrolytes are highly appealing for the surface engineering of biomaterials and the tuning of cell response and phenotypes for biomedical applications. However, cell a...
Idioma eng
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Agentic-AI Framework for Integrated Design, Implementation, Testing, and Operation of Digital Twin Networks
Artículo
Material complementario disponible Artículo DOAJ
Rami Khaldi et al · IEEE · 2026 · ISSN 2644-125X
Digital Twin Networks (DTNs) are emerging as a key enabler for the robust optimization and lifecycle management of next-generation networks. However, current DTN approaches still rely heavily on manual design, implementa...
LCC LCC:Telecommunication; TENDOlRyYW5zcG9ydGF0aW9uIGFuZCBjb21tdW5pY2F0aW9ucw~~Idioma eng
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Efficacy of atelocollagen honeycomb scaffold in bone formation using KUSA/A1 cells
Artículo
Material complementario disponible Artículo CONICET Digital
Rodriguez, Andrea Paola et al · Wisley InterScience · 2006 · ISSN 0021-9304
To induce new bone formation, mesenchymal stem cells were seeded onto atelocollagen honeycomb scaffold. We evaluated the efficacy of this scaffold combined with KUSA/A1 cells in vivo. KUSA/A1 cells alone and with ateloco...
Idioma eng
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