Routing in MobileWireless Sensor Networks: A Leader-Based Approach

This paper presents a leader-based approach to routing in Mobile Wireless Sensor Networks (MWSN). Using local information from neighbour nodes, a leader election mechanism maintains a spanning tree in order to provide the necessary adaptations for efficient routing upon the connectivity changes resulting from the mobility of sensors or sink nodes. We present two protocols following the leader election approach, which have been implemented using Castalia and OMNeT++. The protocols have been evaluated, besides other reference MWSN routing protocols, to analyse the impact of network size and node velocity on performance, which has demonstrated the validity of our approach.Research supported by the Spanish Research Council (MINECO), Grant TIN2016-79897-P, and the Department of Education, Universities and Research of the Basque Government, Grant IT980-16

Recognition physical activities with optimal number of wearable sensors using data mining algorithms and deep belief network

© 2017 IEEE. Daily physical activities monitoring is benefiting the health care field in several ways, in particular with the development of the wearable sensors. This paper adopts effective ways to calculate the optimal number of the necessary sensors and to build a reliable and a high accuracy monitoring system. Three data mining algorithms, namely Decision Tree, Random Forest and PART Algorithm, have been applied for the sensors selection process. Furthermore, the deep belief network (DBN) has been investigated to recognise 33 physical activities effectively. The results indicated that the proposed method is reliable with an overall accuracy of 96.52% and the number of sensors is minimised from nine to six sensors

An Empirical Analysis of cluster-based routing protocols in wireless sensor network

Wireless Sensor Networks (WSNs) are utilized for condition monitoring, developing the board, following animals or goods, social protection, transportation, and house frameworks. WSNs are revolutionizing research. A WSN includes a large number of sensor nodes, or bits, in the application. Bits outfitted with the application\u27s sensors acquire nature data and send it to at least one sink center (in like manner called base stations). This article simulates energy-efficient network initialization strategies using simulation models. First, an overview of network initiation and exploration procedures in wireless ad-hoc networks is provided. The clustering-based routing strategy was selected since it\u27s best for ad-hoc sensor networks. The clustering-based routing techniques used for this study are described below. LEACH, SEP, and Z-SEP are used. MATLAB was used to implement and simulate all routing protocols. All protocols were simulated with various parameters like Number of CHs, Number of Alive Nodes, Number of Dead Nodes, Number of packets to BS, and circumstances to show their functioning and to determine their behavior in different sensor networks

User interaction modeling and profile extraction in interactive systems : a groupware application case study

Abstract A relevant goal in human-computer interaction is to produce applications that are easy to use and well-adjusted to their users' needs. To address this problem it is important to know how users interact with the system. This work constitutes a methodological contribution capable of identifying the context of use in which users perform interactions with a groupware application (synchronous or asynchronous) and provides, using machine learning techniques, generative models of how users behave. Additionally, these models are transformed into a text that describes in natural language the main characteristics of the interaction of the users with the system.This work was partially supported by project PAC::LFO (MTM2014-55262-P) of Ministerio de Ciencia e Innovación (MICINN), Spain. We are grateful to the referees for their constructive input

Towards Citizen Co-Created Public Service Apps

WeLive project's main objective is about transforming the current e-government approach by providing a new paradigm based on a new open model oriented towards the design, production and deployment of public services and mobile apps based on the collaboration of different stakeholders. These stakeholders form the quadruple helix, i.e., citizens, private companies, research institutes and public administrations. Through the application of open innovation, open data and open services paradigms, the framework developed within the WeLive project enables the co-creation of urban apps. In this paper, we extend the description of the WeLive platform presented at, plus the preliminary results of the first pilot phase. The two-phase evaluation methodology designed and the evaluation results of first pilot sub-phase are also presented.The work presented in this research article has been carried out within the WeLive project from the European Union's Horizon 2020 research and innovation program under Grant Agreement No. 645845

Implantación de una plataforma para desarrollar mundos virtuales para la educación

Este proyecto está dedicado a la implantación de una plataforma de mundo virtual que permita a sus usuarios utilizarla para dar apoyo a sus clases/talleres de índole educacional a distintos niveles, desde colegios e institutos a centros de educación especial. En particular, se ha trabajado estrechamente con el Colegio de Educación Especial "Santa Teresa de Jesús", en Granada, en la creación de un museo virtual donde los visitantes puedan ver las obras creadas por los alumnos de este centro. Para llevar a cabo la implantación se ha realizado en primera instancia una investigación sobre la capacidad necesaria de las máquinas que albergarán los servidores del mundo virtual. Seguidamente se han instalado y configurado los programas necesarios para acondicionar el mundo virtual de acuerdo a las necesidades requeridas por sus usuarios de mayor nivel, los profesores. Además, se ha añadido una interfaz web enlazada con las bases de datos del mundo virtual para permitir a los profesores el control de manera externa de ciertos parámetros que puedan serles necesarios; se han creado Pendrives USB con capacidad de ejecutar un programa cliente para conectarse al mundo virtual. El proyecto tiene también la intención de servir como manual de usuario para el mantenimiento y futuras mejoras de la plataforma.This Project is dedicated to the establishment of a virtual world platform that allows its users to use it as a support tool for their lessons and school workshops at different levels of education, from elementary schools and high schools to special education centers. Particularly, there has been a joint effort with the Special Education School “Santa Teresa de Jesús”, in Granada, with the creation of a virtual museum where its visitors can see the artwork of the students of the institute. To accomplish this establishment, we have done, in the first place, an investigation of the requirements on the machines that will host the servers of the virtual world. Next, the necessary programs have been installed and configured to set up the virtual world according to the needs required by the higher level users, the teachers. Furthermore, a web interface linked with the data base of the virtual world has been added to allow the teachers an external way to control certain parameters; USB keys have been created with the capacity to run a client program to connect to the virtual world. The project also intends to serve as a manual for the maintenance and future improvements