8 results on '"Fabián Hidalgo"'
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2. Study of Video Traffic in IPv6 Multicast IEEE 802.11ac Test Bed.
- Author
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Santiago Pérez, Higinio Facchini, Alejandro Dantiacq, Gabriel Quiroga-Salomon, Fabián Hidalgo, Gastón Cangemi, Mauricio Muñoz, and Adrián Cárdenas
- Published
- 2019
- Full Text
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3. Educación, Sociedad y Tecnología
- Author
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Nicolás Francisco Álvarez Pesantes, Rudy Jonathan Párraga Solorzano, Ana Gabriela Lavalle Villacís, Folke Nevaldo Zambrano Quiroz, Evelyn Yamile Játiva Acebo, Byron Fabián Hidalgo Palacios, Luis Daniel Huamán Asillo, Nelly Carmen Chávez Rojas, Augusto Roberto Apaza Vargas, Héctor Exequiel Gamero Torres, Moisés Gerardo Chávez Rojas, Aida Indira Gamero Vera, José Manuel Calizaya López, Ana Rosario Miaury Vilca, Rildo Bellido Medina, Fiorella Candelaria Sue Helen Jara Rosales, Roberto Cervantes Rivera, Deyvin Herlin Cabana Mamani, Ferdinand Eddington Ceballos Bejarano, Lucia Zambrano Santos, Diana Patricia Castro Cedeño, Kelly Gardenia Matute Castro, Ivonne Margarita Alcívar Arteaga, Welington Paúl Leones Zambrano, Donna Jesselle Montesdeoca Loor, Ana Cecilia De Paz Lazaro, David Orlando Pérez Alarcón, Fany Dilan Verde Luján, Hernán Edwin Verde Luján, Gardenia Liszet Prado Chavarri, Lolo Juan Mamani Daza, Carmen Vanessa Franco Franco, María Alejandra Maceda Mogrovejo, and Carlos César Trujillo Vera
- Abstract
La educación en tiempos modernos ha experimentado un gran cambio. El mundo está cada vez más conectado a través de la tecnología y la educación no es la excepción. La tecnología está cambiando los métodos de enseñanza y aprendizaje y esto se refleja en la forma en que se imparte la educación. Los maestros y profesores ahora tienen la oportunidad de utilizar herramientas como el aprendizaje en línea, los simuladores, la realidad virtual y las redes sociales para mejorar el proceso de enseñanza. Estas herramientas ayudan a los estudiantes a estar mejor conectados con el contenido y a tener una mejor comprensión de los temas. Esto también les permite trabajar de manera más eficiente y aprovechar al máximo los recursos disponibles. Los estudiantes también tienen ahora la oportunidad de acceder a una amplia gama de recursos educativos, como libros electrónicos, videos educativos, podcast y otros. Esto les permite tener un mejor acceso a la información y aumentar su conocimiento. Además, la tecnología también ofrece la oportunidad de trabajar en equipo y colaborar con otros estudiantes de todo el mundo. En definitiva, la tecnología ofrece una gran cantidad de oportunidades para mejorar la educación en tiempos modernos. Los docentes deben aprovechar al máximo estas herramientas para ayudar a los estudiantes a mejorar su conocimiento y habilidades. El mundo está cambiando y la educación debe evolucionar junto con él.
- Published
- 2023
4. Analysis of QoS and QoE Metrics of IPTV Multicast Video Traffic on a LAN TestBed
- Author
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Santiago Pérez, Higinio Facchini, Alejandro Dantiacq, Pablo Varela, Fabián Hidalgo, Bruno Roberti, María Stefanoni, and Matilde Césari
- Published
- 2023
5. Evaluación de métricas del comportamiento del tráfico de vídeo en una red experimental multidifusión
- Author
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Fabián Hidalgo, Santiago Cristóbal Pérez, Higinio Alberto Facchini, and Alejandro Dantiacq
- Subjects
Multicast ,business.industry ,Computer science ,lcsh:T ,Quality of service ,media_common.quotation_subject ,Topology (electrical circuits) ,Service provider ,laboratorio experimental wan ,tráfico video ,códec de video ,qos ,tráfico multidifusión ,lcsh:Technology ,lcsh:TA1-2040 ,Bandwidth (computing) ,Codec ,The Internet ,Quality (business) ,business ,lcsh:Engineering (General). Civil engineering (General) ,Computer network ,media_common - Abstract
En la actualidad, se observa un cambio importante en el tráfico de datos en las redes, tanto locales como de Internet, en todo el espectro de clientes posibles, sean estos fijos o móviles. El consumo de tráfico de video se incrementa día a día en todos sus formatos. A los proveedores de servicios se les exige mayor ancho de banda, calidad y rendimiento, para los todos los productos, pero fundamentalmente a los basados en video. En este artículo se presenta una versión mejorada de nuestros ensayos de laboratorio, para redes genéricas, con cuatro sub-escenarios, que permiten inyectar tráfico de video de tipo multidifusión, representado con tres diferentes codecs. La topología de red utilizada incluye un equipo servidor de streaming, y hasta 20 computadoras de escritorio como clientes. Se definieron las métricas más importantes a analizar, basadas en el desempeño y la calidad de servicio (QoS), bajo condiciones de ancho de banda limitado. Los resultados numéricos experimentales pueden ser de utilidad para los administradores, analistas de simulación, diseñadores, y planificadores de redes de datos. Pero, además, este documento pretende servir como guía para la gestión de redes similares, y para utilizar eficientemente los recursos disponibles, sin comprometer el desempeño y QoS.
- Published
- 2020
6. Comparison of the Behavior of Video Codecs in Wi-Fi IEEE 802.11ac Environment
- Author
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Gastón Cangemi, Fabián Hidalgo, Alejandro Dantiacq, Gabriel Quiroga Salomón, Higinio Alberto Facchini, and Santiago Cristóbal Pérez
- Subjects
Multimedia ,business.industry ,Computer science ,Data_CODINGANDINFORMATIONTHEORY ,computer.software_genre ,Uncompressed video ,Videoconferencing ,IEEE 802.11ac ,Encoding (memory) ,Synonym (database) ,Wireless ,Codec ,business ,computer ,Coding (social sciences) - Abstract
A major challenge for digital video storage or traffic was that the original or uncompressed video required a lot of digital information. Therefore, it was necessary to carry out some compression process to transmit or store digitized video with the least amount of bits possible. The word compression, as a synonym for coding, refers to the device called codec (coder-decoder), which is commonly used in multimedia environments. Since the 1990s, approximately every nine years, the development of a new standard is concluded, and each new codec is almost twice as efficient as the previous one. The newer compression methods are much more complex and more sophisticated than the previous ones, but they demand much more computational power. This paper presents a comparative study of codec behavior by experimentation. A balanced combination of established standards and some newer ones for contrast were selected. It used a trailer of the movie Star Trek, and a video of an Adobe Connect videoconference, of the same duration. The videos were encoded in H.264, H.265, VP8 and Theora. It proposes an experiment in a real laboratory, with wireless clients working in the IEEE 802.11ac standard and IPv6. The conclusions of the work will help to determine the adequate management of similar real or simulated networks.
- Published
- 2020
7. Study of Video Traffic in IPv6 Multicast IEEE 802.11ac Test Bed
- Author
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Adrián Cárdenas, Alejandro Dantiacq, Gastón Cangemi, Fabián Hidalgo, Mauricio Muñoz, Santiago Cristóbal Pérez, Higinio Alberto Facchini, and Gabriel Quiroga Salomón
- Subjects
Multicast ,business.industry ,End user ,Computer science ,computer.internet_protocol ,Quality of service ,Testbed ,computer.software_genre ,Videoconferencing ,Traffic engineering ,IEEE 802.11ac ,IP multicast ,business ,computer ,Computer network - Abstract
The increasing number of multimedia users on networks entails an exponential growth in the demand for bandwidth. End users and applications pose increasing demands on Traffic Engineering, QoS and QoE of video-based products. This paper reports an experimental study of multicast video traffic in an actual laboratory network, in a controlled environment, as a testbed, with IEEE 802.11ac IPv6 wireless clients. Experiments were conducted using a Star Trek movie trailer. Alternatively, for contrast purposes, a video of equal length taken from a video conference on Adobe Connect was used. The videos were coded using H.264, H.265, VP8 and Theora. This study is the sequel to an earlier experimental study conducted on video traffic for wired networks. The main conclusions seek to guide and help simulation analysts, network administrators, designers and planners in determining the best settings to take into account in order to properly manage similar networks, efficiently using available resources without compromising the expected quality and performance levels.
- Published
- 2020
8. Experimental Study of Multicast and Unicast Video Traffic in WAN Links
- Author
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Higinio Alberto Facchini, Fabián Hidalgo, Santiago Cristóbal Pérez, and Luis Armando Marrone
- Subjects
General Computer Science ,Multicast ,Protocol Independent Multicast ,business.industry ,Computer science ,ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS ,Distance Vector Multicast Routing Protocol ,02 engineering and technology ,Network Load Balancing ,021001 nanoscience & nanotechnology ,01 natural sciences ,010309 optics ,Source-specific multicast ,0103 physical sciences ,Xcast ,Electrical and Electronic Engineering ,Unicast ,0210 nano-technology ,business ,Pragmatic General Multicast ,Computer network - Abstract
In recent years there has been an exponential increase in the growth in multimedia applications, and in particular in video applications. Understanding the behavior of the video traffic and the requirements for the network helps network administrators to improve the traffic. In this work, a quantitative analysis is performed by experimentation, in order to evaluate the behavior and impact of video traffic on WAN networks. We propose a WAN test bed with fourth subescenarios that allows to inject unicast or multicast video traffic, compressed with several codecs. The generic topology used includes a computer running as a streaming server and up to 20 desktop computers (PCs) as clients connected at the ends of a network as if outside a WAN. This network WAN is formed by routers and switchs with different types of links interconnecting the same. For the operation between routers was configured the OSPF routing protocol v2. For the same routers are configured the routing multicast protocol PIM in dense mode. From capturing video traffic, we identified several interesting performance and Qo metrics, such as unicast and multicast throughput, delay, jitter, and Pareto distribution. We include detailed contributions on the impact produced by several factors, such as the codec used for the compression, and the use of unicast and multicast traffic when there are restrictions on the bandwidth, as in a corporate real WAN link of some few Mbps. The work oriented on the configurations to be taken into account for an adequate management of similar networks and an efficient use of the resources available, without compromising the performance and the expected QoS. Besides facilitates the comparison of the results with those obtained from analytical studies and modelling for different contexts.
- Published
- 2017
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