Search results for "Comunicaciones"
showing 10 items of 175 documents
Multimedia Retrieval by Means of Merge of Results from Textual and Content Based Retrieval Subsystems
2010
The main goal of this paper it is to present our experiments in ImageCLEF 2009 Campaign (photo retrieval task). In 2008 we proved empirically that the Text-based Image Retrieval (TBIR) methods defeats the Content-based Image Retrieval CBIR "quality" of results, so this time we developed several experiments in which the CBIR helps the TBIR. The TBIR System [6] main improvement is the named-entity sub-module. In case of the CBIR system [3] the number of low-level features has been increased from the 68 component used at ImageCLEF 2008 up to 114 components, and only the Mahalanobis distance has been used. We propose an ad-hoc management of the topics delivered, and the generation of XML struct…
Some Results Using Different Approaches to Merge Visual and Text-Based Features in CLEF’08 Photo Collection
2009
This paper describes the participation of the MIRACLE team at the ImageCLEF Photographic Retrieval task of CLEF 2008. We succeeded in submitting 41 runs. Obtained results from text-based retrieval are better than content-based as previous experiments in the MIRACLE team campaigns [5, 6] using different software. Our main aim was to experiment with several merging approaches to fuse text-based retrieval and content-based retrieval results, and it happened that we improve the text-based baseline when applying one of the three merging algorithms, although visual results are lower than textual ones.
Radio definida por software y docencia en línea: experiencia en el Grado en Ingeniería Telemática
2021
[EN] Devices based on software defined radio have been used in the last 6 years as motivating elements in the laboratory practices of digital communications courses at the Degree in Telematics Engineering of the University of Valencia. However, the development of these practices requires giving access to some hardware devices that are physically located in the laboratories of the School of Engineering. In this contribution, taking into account the current situation of hybrid learning and a possible transition to remote learning due to the COVID-19 pandemic, a system that allows the remote interaction with the software defined radio devices is proposed. This remote access system, in addition t…
Innovación en docencia de sistemas de comunicación en el Grado de Ingeniería Telemática de la UVEG
2016
[EN] In teaching Communication Systems, we find a high theoretical component. The perception about the related subjects cause a negative perception in the students. This work explains the motivation and the strategy followed to re-orientate this perception by introducing Software Defined Radio elements (like USRPs) in different subjects in the Degree and the Master in Telecommunication Engineering at the University of Valencia
Incorporando dispositivos de radio definida por software en la materia de Comunicaciones Digitales: del grupo piloto a la gran clase
2020
[ES] La innovación educativa es un proceso que se extiende más allá de un curso académico. En su desarrollo se distinguen las etapas de planificación, implementación, evaluación y realimentación, para identificar aspectos susceptibles de mejora. En esta contribución presentamos el trabajo desarrollado en los dos últimos cursos en la asignatura Teoría de la Comunicación (materia de Comunicaciones Digitales), Grado en Ingeniería Telemática, de la Universitat de València. Concretamente, se incorporan dispositivos de radio definida por software en los laboratorios como herramienta para conseguir unas prácticas más realistas. El artículo describe el proceso de adaptación de una sesión de laboratori…
Seguimiento del trabajo no presencial: retroalimentación y optimización
2015
[EN] Within the context of UPV’s project for improving the learning process through innovation, the TASCA group has developed and applied different strategies to assess student’s out-of-class work. This work has allowed us to collect feedback from proposed out-of-class activities, like whether the deadlines for assignments have been under or overestimated, or students’ opinion, to improve thos activities. We have test the usefulness of these strategies in nine different degrees. In general, there is a great variability in the time students devote to a given task and, in some cases, no positive correlation is observed between that time and the obtained results. Hence, by performing this kind…
Incorporación de Internet de las Cosas (IoT) en la docencia universitaria en dos etapas: hardware y software
2018
[EN] IoT is a concept referred to a network of common objects interconnected through the Internet. This is one of the main areas with growing interest and also necessary for the Telecommunication and Telematics Engineering students. The main constraints which face the students with IoT are the integration of the hardware as well as the need for management systems to handle the amount of data they generate by specific software. This work shows some experiences done by a group of students in the Telematics Engineering Degree and the Master of Telecommunications.
Disposición del alumnado al uso de herramientas de comunicación síncrona en la docencia universitaria
2015
[EN] In recent years there have been numerous innovative educational initiatives that have proposed the use of synchronous communication tools to support university teaching. These proposals have proven their worth in specific application contexts such as: virtual tutoring, internationalization and mobility in masters and doctorates. However, their sometimes limited scope often makes it difficult to generalize results to other contexts and, thus, to pass from pilots to consolidated solutions. Within the framework of 2015 being declared as the International Year of Evaluation, this paper presents the results of a survey aimed to obtain the opinion of students regarding the use of synchronous…
Aprendizaje basado en proyectos en los laboratorios de comunicaciones digitales
2019
[EN] Digital Communications and Signal Processing for Communications have been traditionally taught from a theoretical point of view. The complexity and cost of radio-frequency systems hampers the realization of practical experiences in the laboratories of Communications. However, current Academic Accreditation includes the dimension of “what students are expected to be able to do”. The decrease of the gap between standard simulated laboratory sessions and more practical and realistic approaches is therefore required. In this paper, we introduce an active learning methodology we have followed in order to introduce practical aspects related to Digital Communications and Signal Processing for…
Joint Distribution of Polarization-Multiplexed UWB and WiMAX Radio in PON
2009
[EN] In this paper, the feasibility of the joint distribution of ultra-wideband (UWB) and WIMAX wireless using polarization multiplexing as a coexistence technique is proposed and experimentally demonstrated within the framework of passive optical networks (PON). Four single- and orthogonal-polarization multiplexing schemes are studied targeting to reduce the mutual interference when UWB and WiMAX are distributed jointly through standard single-mode fiber (SSMF) without transmission impairments compensation techniques and amplification. Experimental results indicate successful transmission up to 25 km, in SSMF exceeding the range in typical PON deployments. The radio link penalty introduced…