Results 21 to 30 of about 114,680 (216)

SIGPRO: A Real-Time Progressive Notification System Using MQTT Bridges and Topic Hierarchy for Rapid Location of Missing Persons

open access: yesIEEE Access, 2020
Currently, one of the main challenges that the world's big cities are facing is the security problem of their citizens and specifically the disappearance of people (even more in Latin America countries).
Ana Maria Zambrano V   +3 more
doaj   +1 more source

5G NR Radio Network Planning at 3.5 GHz and 28 GHz in a Business/Dense Urban Area from the North Zone in Quito City

open access: yesEngineering Proceedings, 2023
This work presents an overview of fifth-generation (5G) technology, its key functionalities, and its applications. Then, we introduce the topic of 5G radio network planning, making analysis and design methods for coverage and capacity determinations ...
Valdemar Farré   +2 more
doaj   +1 more source

Machine Learning Techniques in Optical Networks: A Systematic Mapping Study

open access: yesIEEE Access, 2023
During the last decade, optical networks have become “smart networks”. Software-defined networks, software-defined optical networks, and elastic optical networks are some emerging technologies that provide a basis for promising innovations ...
Genesis Villa   +4 more
doaj   +1 more source

Evaluación de la utilización de plataformas de redes sociales ofrecidas por empresas de telecomunicaciones

open access: yesAlfaPublicaciones, 2023
Introducción: las redes sociales modernas han revolucionado la forma en que las personas se conectan, superando las barreras geográficas y lingüísticas. A través de dispositivos móviles, la comunicación instantánea se ha convertido en la norma, con la simple creación de un perfil que permite conectar con amigos y familiares, promocionar productos y ...
Paulo César Torres Abril   +2 more
openaire   +1 more source

Evaluación de las topologías físicas de redes WSN para la medición de variables ambientales

open access: yesRevista Científica y Tecnológica UPSE, 2015
En este trabajo se presenta un estudio comparativo entre las topologías físicas que apoyan WSN con el fin de determinar la más eficaz aplicado a una red inalámbrica de sensores ambientales.
S. F. Saigua Carvajal   +3 more
doaj   +1 more source

Fraud Detection Using the Fraud Triangle Theory and Data Mining Techniques: A Literature Review

open access: yesComputers, 2021
Fraud entails deception in order to obtain illegal gains; thus, it is mainly evidenced within financial institutions and is a matter of general interest.
Marco Sánchez-Aguayo   +2 more
doaj   +1 more source

Direction-of-Arrival (DOA) Estimation Based on Real Field Measurements and Modified Linear Regression

open access: yesEngineering Proceedings
This study applied modified linear regression in machine learning (ML) to predict the direction of arrival (DoA) in cellular networks using field measurements and radiofrequency parameters. Models were developed from base station data, with preprocessing
Luis Antonio Flores   +5 more
doaj   +1 more source

Predictive Fraud Analysis Applying the Fraud Triangle Theory through Data Mining Techniques

open access: yesApplied Sciences, 2022
Fraud is increasingly common, and so are the losses caused by this phenomenon. There is, thus, an essential economic incentive to study this problem, particularly fraud prevention.
Marco Sánchez-Aguayo   +2 more
doaj   +1 more source

Performance Analysis of DCO-OFDM in IEEE 802.11bb VLC PHY Modes: Impact of Biasing Techniques and Optical Channel Dispersion

open access: yesEngineering Proceedings
This paper presents a performance analysis of Direct Current-biased Optical OFDM (DCO-OFDM) under the IEEE 802.11bb standard for Visible Light Communication (VLC).
Nelson Jaque Intriago   +4 more
doaj   +1 more source

IrisMath: A Blind-Friendly Web-Based Computer Algebra System

open access: yesIEEE Access, 2023
Visually impaired individuals face challenges in pursuing higher education, particularly in technical courses related to engineering. The lack of specialized tools and resources that allow for proper development in academic activities is a significant ...
Ana M. Zambrano   +5 more
doaj   +1 more source

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