Search Results - "Costa, João C. W. A"
-
1
Review of Uncertainty Sources in Optical Current Sensors Used in Power Systems
Published in Energies (Basel) (01-08-2024)“…Optical current sensors have been developed and improved over the past few decades, and they have been increasingly employed in power systems, including smart…”
Get full text
Journal Article -
2
Finite Element–Based Machine-Learning Approach to Detect Damage in Bridges under Operational and Environmental Variations
Published in Journal of bridge engineering (01-07-2019)“…AbstractIn the last decades, the long-term structural health monitoring of civil structures has been mainly performed using two approaches: model based and…”
Get full text
Journal Article -
3
Genetic‐based EM algorithm to improve the robustness of Gaussian mixture models for damage detection in bridges
Published in Structural control and health monitoring (01-03-2017)“…Summary During the service life of bridges, the bridge management systems (BMSs) seek to handle all performed assessment activities by controlling regular…”
Get full text
Journal Article -
4
Matched-Decision AP Selection for User-Centric Cell-Free Massive MIMO Networks
Published in IEEE transactions on vehicular technology (01-05-2023)“…This work proposes a scalable access point (AP) selection framework based on a competitive mechanism that operates in two stages. Initially, the user equipment…”
Get full text
Journal Article -
5
Strain sensing based on a core diameter mismatch structure
Published in Microwave and optical technology letters (01-08-2019)“…In this paper, it is proposed and experimentally investigated a sensor structure based on a core diameter mismatch technique for strain sensing. An uncoated…”
Get full text
Journal Article -
6
A Cost Assessment Methodology for User-Centric Distributed Massive MIMO Architectures
Published in IEEE open journal of the Communications Society (2024)“…User-centric (UC) distributed massive multiple-input multiple-output (D-mMIMO), also known as cell-free mMIMO, is a pivotal technology for enabling future…”
Get full text
Journal Article -
7
Nonnegative matrix factorization-based blind source separation for full-field and high-resolution modal identification from video
Published in Journal of sound and vibration (24-11-2020)“…Traditional modal analysis requires physically attached sensors for data acquisition and vibration-based monitoring. Although traditional modal analysis…”
Get full text
Journal Article -
8
Spatio-temporal decomposition of 2D travelling waves from video measurements
Published in Mechanical systems and signal processing (01-05-2020)“…•A novel output-only approach for video-based blind source separation.•Timing-based approach for dynamic monitoring of infrastructures.•Automated motion…”
Get full text
Journal Article -
9
Optical Networking Gym: an open-source toolkit for resource assignment problems in optical networks
Published in Journal of optical communications and networking (01-12-2024)“…The dynamic provisioning of optical network services requires algorithms to find a suitable solution given the specific service requirements and the current…”
Get full text
Journal Article -
10
A global expectation-maximization based on memetic swarm optimization for structural damage detection
Published in Structural health monitoring (01-09-2016)“…During the service life of engineering structures, structural management systems attempt to manage all the information derived from regular inspections,…”
Get full text
Journal Article -
11
Adaptive Hybrid Precoding Strategy for Cell-Free Massive MIMO
Published in Journal of Microwaves, Optoelectronics and Electromagnetic Applications (01-06-2023)“…Abstract This work presents an adaptive hybrid signal precoding strategy for Cell-Free (CF) Massive multiple-input multiple-output (MIMO) systems. The proposed…”
Get full text
Journal Article -
12
Reducing Inter-CPU Coordination in User-Centric Distributed Massive MIMO Networks
Published in IEEE wireless communications letters (01-06-2023)“…This paper proposes a method for reducing inter-central processing unit (CPU) coordination in user-centric (UC) distributed massive multiple-input…”
Get full text
Journal Article -
13
A Multi-Plasmonic Approach for Simultaneous Measurements based on a D-Shaped Photonic Crystal Fiber Sensor: from Temperature to Optical Dispersion
Published in Journal of Microwaves, Optoelectronics and Electromagnetic Applications (01-03-2023)“…Abstract The growing demand for multiparameter sensors includes compact devices accompanied by simple calibration processes to distinguish the outputs from…”
Get full text
Journal Article -
14
A semi-Markov decision process-based joint call admission control for inter-RAT cell re-selection in next generation wireless networks
Published in Computer networks (Amsterdam, Netherlands : 1999) (09-12-2013)“…In the next generation wireless networks (NGWNs), where different radio access technologies (RAT) will coexist and work in collaboration to provide ubiquitous…”
Get full text
Journal Article -
15
Restoration in optical cloud networks with relocation and services differentiation
Published in Journal of optical communications and networking (01-02-2016)“…Optical cloud networks allow for the integrated management of both optical and IT resources. In this paradigm, cloud services can be provisioned in an anycast…”
Get full text
Journal Article Publication -
16
Binder Identification Using Pattern Recognition on Phantom Measurements
Published in IEEE transactions on instrumentation and measurement (01-03-2016)“…This paper proposes an automatic method for the identification of twisted pairs (TPs) sharing the same binder, based on the analysis of phantom circuit…”
Get full text
Journal Article -
17
Second-Order Dispersion Sensor Based on Multi-Plasmonic Surface Resonances in D-Shaped Photonic Crystal Fibers
Published in Photonics (2021)“…This paper proposes a scheme to determine the optical dispersion properties of a medium using multiple localized surface plasmon resonances (SPR) in a D-shaped…”
Get full text
Journal Article -
18
Bent optical fiber taper for refractive index measurements with tunable sensitivity
Published in Microwave and optical technology letters (01-04-2015)“…ABSTRACT This letter presents experimental results of a refractive index sensor using a bent optical fiber taper. The approach of this sensor is based on an…”
Get full text
Journal Article -
19
Fiber optic displacement sensor based on a double-reflecting OTDR technique
Published in Microwave and optical technology letters (01-06-2015)“…ABSTRACT In this work, it is proposed a technique to implement an intensity sensor based on the generation of a double‐reflecting (ghost) signal in optical…”
Get full text
Journal Article -
20
Interrogation and multiplexing system for fiber loop mirror coupled intensity sensors using OTDR
Published in Microwave and optical technology letters (01-12-2014)“…ABSTRACT In this article, it is proposed an interrogation and multiplexing system based on optical time domain reflectometer for fiber loop mirror coupled…”
Get full text
Journal Article