255 research outputs found

    Experimental Results and Evaluation of SmartBox Stimulation Device in a P2P E-learning System

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    In this paper, we present the experimental results and evaluation of the SmartBox stimulation device in P2P e-learning system which is based on JXTA-Overlay. We also show the design and implementation of the SmartBox environment that is used for stimulating the learners motivation to increase the learning efficiency. The SmartBox is integrated with our P2P system as a useful tool for monitoring and controlling learners¿ activity. We found by experimental results that the SmartBox is an effective way to increase the learner¿s concentration. We also investigated the relation between learner¿s body movement, concentration, and amount of study. From the experimental results, we conclude that the use of SmartBox is an effective way to stimulate the learners in order to continue studying while maintaining the concentration.En aquest article es presenten els resultats experimentals i l'avaluació del dispositiu d'estimulació SmartBox en un sistema d'aprenentatge en línia P2P que es basa en la superposició de JXTA. També es mostra el disseny i implementació de l'ambient de l'SmartBox que s'utilitza per a estimular la motivació dels estudiants per augmentar l'eficiència en l'aprenentatge. L'SmartBox s'integra amb el nostre sistema de P2P com una eina útil per al monitoratge i per controlar l'activitat dels alumnes. Pels resultats experimentals trobem que l'SmartBox és una forma efectiva d'augmentar la concentració de l'alumne. També es va investigar la relació entre el moviment del cos de l'alumne, la concentració i la quantitat d'estudis. Dels resultats experimentals es conclou que l'ús de l'SmartBox és una manera efectiva d'estimular els estudiants per tal que continuïn els seus estudis mentre es manté la seva concentració.En este artículo se presentan los resultados experimentales y la evaluación del dispositivo de estimulación SmartBox en un sistema de aprendizaje en línea P2P que se basa en la superposición de JXTA. También se muestra el diseño e implementación del ambiente del SmartBox que se utiliza para estimular la motivación de los estudiantes para aumentar la eficiencia en el aprendizaje. El SmartBox se integra con nuestro sistema de P2P como una herramienta útil para la monitorización y para controlar la actividad de los alumnos. Por los resultados experimentales encontramos que la SmartBox es una forma efectiva de aumentar la concentración del alumno. También se investigó la relación entre el movimiento del cuerpo del alumno, la concentración y la cantidad de estudios. De los resultados experimentales se concluye que el uso del SmartBox es una manera efectiva de estimular a los estudiantes para que continúen sus estudios mientras se mantiene su concentración

    The simplicity project: easing the burden of using complex and heterogeneous ICT devices and services

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    As of today, to exploit the variety of different "services", users need to configure each of their devices by using different procedures and need to explicitly select among heterogeneous access technologies and protocols. In addition to that, users are authenticated and charged by different means. The lack of implicit human computer interaction, context-awareness and standardisation places an enormous burden of complexity on the shoulders of the final users. The IST-Simplicity project aims at leveraging such problems by: i) automatically creating and customizing a user communication space; ii) adapting services to user terminal characteristics and to users preferences; iii) orchestrating network capabilities. The aim of this paper is to present the technical framework of the IST-Simplicity project. This paper is a thorough analysis and qualitative evaluation of the different technologies, standards and works presented in the literature related to the Simplicity system to be developed

    A Data Annotation Architecture for Semantic Applications in Virtualized Wireless Sensor Networks

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    Wireless Sensor Networks (WSNs) have become very popular and are being used in many application domains (e.g. smart cities, security, gaming and agriculture). Virtualized WSNs allow the same WSN to be shared by multiple applications. Semantic applications are situation-aware and can potentially play a critical role in virtualized WSNs. However, provisioning them in such settings remains a challenge. The key reason is that semantic applications provisioning mandates data annotation. Unfortunately it is no easy task to annotate data collected in virtualized WSNs. This paper proposes a data annotation architecture for semantic applications in virtualized heterogeneous WSNs. The architecture uses overlays as the cornerstone, and we have built a prototype in the cloud environment using Google App Engine. The early performance measurements are also presented.Comment: This paper has been accepted for presentation in main technical session of 14th IFIP/IEEE Symposium on Integrated Network and Service Management (IM 2015) to be held on 11-15 May, 2015, Ottawa, Canad

    Overlay networks for smart grids

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    Establishing Peer-to-Peer Distributed File Sharing System With Mobile Host

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    Viimase kümne aasta jooksul on mobiilsed seadmed nagu näiteks nutitelefonid, sülearvutid, pihuarvutid jne saanud lahutamatuks osaks igapäeva elust. See aga on tekitanud nõudluse võimsamate, kiiremate ja energiasäästlikumate seadmete järgi. Lisaks on iOSi ja Androidi operatsioonisüsteemide väljalaske tõttu suurenenud nii mobiilirakenduste arv kui ka keerukus. Sarnane areng on toimunud ka veebiteenuste valdkonnas ja nutitelefonides on ligi-pääs veebiteenustele muutunud elementaarseks. See aga on viinud järgmise sammuni – veebiteenuste pakkumine otse nutitelefonidest. See kontseptsioon pole uus ja seda on põh-jalikult uurinud S. N. Srirama, kes pakkus välja Mobile Host (Mobiilne Veebiteenuse Pak-kuja) lahenduse 2006. aastal, ning mida on C. Paniagua uuendanud Android OS’ile aastal 2012 kasutades REST arhitektuuri ja OSGi’t. P2P (Peer-to-Peer ehk partnervõrk) põhinevad programmid nagu näiteks failide jagamine ja sõnumite saatmine on tänapäeval arvutikasutajate seas laialdaselt levinud. Ar-vutid üle maailma on ühendatud omavahel ja jagavad ressursse selles süsteemis ilma keskse serverita. Iga arvuti selles võrgus on võrdne sel moel, et on võimeline ligi pääsema ja alla laadima ressursse teistest masinatest selles süsteemis. Töö kirjeldab põgusalt Mobile Hosti, P2P arhitektuuri, valitud P2P BitTorrenti pro-tokolli ja kuidas neid tehnoloogiaid kasutati P2P hajusa failide jagamise süsteemi loomi-seks. Uurimuse käigus arendati välja hajus failide jagamise süsteem Mobile Hosti lisana kasutades BitTorrenti protokollil põhinevat C++ keeles kirjutatud Libtorrenti teeki. Valmi-nud programm on võimeline looma torrent faili, avama ja laadima ning jagama vastavaid faile. Lisaks on võimalik muuta failide hoiustamise asukohta ja määrata mõningaid ses-siooni seadeid nagu näiteks alla ja üles laadimise kiirust piirata ning porti määrata. Failide jagamise teenust pakkuvate seadmete otsingu lihtsustamiseks seati üles Apache SOLR 4.2.0 veebiteenus mcrlabs.net serverisse millega suhtlus käib automaatselt.Mobile devices such as tablets, PDAs, mobile phones etc. have developed rapidly during last decade and become inseparable part of people’s everyday life. These devices are equipped with embedded sensors, camera, touchscreen, more memory, powerful processor, mobile 3G and 4G networks and Wi-Fi capability as well as efficient power consumption mechanisms. These improvements have led to mobile devices being able to perform tasks that usually personal computers are capable of. What is more due to release of Android OS and iOS applications for such mobile devices have increased as well as their complexity. Being online has become ubiquitous as Wi-Fi and mobile data networks are available in most of the places. For example over 45% of world’s population is covered by 3G mobile network [2]. Needlessly to say that makes using web services form mobile devices a com-mon thing. Such improvements lead to next generation of services which can be provided not only from dedicated servers but also from mobile phones. The concept of mobile web services provisioning is not new and has been in the ground for some time. Srirama et al. proposed the concept of Mobile Host [3] in 2006 where the mobile device acts as service provider. Mobile Host enables seamless integration of user specific services to the enterprise by following web service standards, also on the radio link and via resources constrained smart phones. Moreover Mobile Host fosters the new generation of ubiquitous and context-aware applications enabling the consumption of web services anywhere at any time from the handset. Mobile Host has been updated to latest technologies like for example REST archi-tecture which replaced SOAP so web services would be focused on systems resources. Early versions of Mobile Host were developed in PersonalJava and J2ME and meant for Symbian devices but as now the biggest share in smart phones market is held by Android then Mobile Host was upgraded for that platform by Paniagua [4] in 2012. Contribution of this thesis was to develop Peer-to-Peer (P2P) distributed file shar-ing system to Mobile Host for Android. This feature comes in handy when we talk about services that enables file sharing. As Mobile Host by its nature can join or leave network at any moment then accessing files that client is interested in becomes critical as file to be downloaded would be offered only by one provider as in regular client-server architecture. P2P distributed file sharing capability for Mobile Host provides users more reliable file sharing environment in distributed manner as files are downloaded as pieces from all the online peers who have pieces of desired file. What is more, small metadata torrent files are hosted by Mobile Hosts and published as a service. This setup assures the independency from other platforms and hosts

    Experimental results and evaluation of SmartBox stimulation device in a P2P e-learning system

    Get PDF
    In this paper, we present the experimental results and evaluation of the SmartBox stimulation device in P2P e-learning system which is based on JXTA-Overlay. We also show the design and implementation of the SmartBox environment that is used for stimulating the learners motivation to increase the learning efficiency. The SmartBox is integrated with our P2P system as a useful tool for monitoring and controlling learners' activity. We found by experimental results that the SmartBox is an effective way to increase the learner's concentration. We also investigated the relation between learner's body movement, concentration, and amount of study. From the experimental results, we conclude that the use of SmartBox is an effective way to stimulate the learners in order to continue studying while maintaining the concentration.Peer ReviewedPostprint (published version

    Using Assistive Technologies in Autism Care Centers to Support Children Develop Communication and Language Skills. A Case Study: Albania

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    In this paper, we propose the use of the smart environment based on Internet of Things (IoT) and P2P technology as a form of assistive environment in autism care centers to support children develop communication and language skills. We are going to propose the use of the smart environment in Albanian Regional Center for Autism in Tirana, Albania. The smart environment is proposed as an assistive environment for this center in order to support students’ learning during the time that they come to the center for support. Our proposed system uses JXTA-Overlay platform and SmartBox device to monitor the children and create P2P communication between children, caregivers and therapists. Various visual systems, such as objects, photographs, realistic drawings, line drawings, and written words used with assorted modes of technology can support engaged learning and then can increase and maintain the concentration of children with ASD during learning
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