Дисертації з теми "Ubiquitous services"
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Leung, Adrian Ho Yin. "Securing mobile ubiquitous services trusted computing." Thesis, Royal Holloway, University of London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.537518.
Повний текст джерелаPakkala, Daniel. "Lightweight distributed service platform for adaptive mobile services /." Espoo [Finland] : VTT Technical Research Centre of Finland, 2004. http://www.vtt.fi/inf/pdf/publications/2004/P519.pdf.
Повний текст джерелаNylander, Stina. "The ubiquitous interactor : Mobile services with multiple user interfaces." Licentiate thesis, Uppsala : Univ. : Dept. of Information Technology, Univ, 2003. http://www.it.uu.se/research/reports/lic/2003-013/.
Повний текст джерелаDi, Giovanni Pasquale. "Enhancing Ubiquitous Computing Environments Through Composition of Heterogeneous Services." Doctoral thesis, Universita degli studi di Salerno, 2016. http://hdl.handle.net/10556/2231.
Повний текст джерелаIn recent years the substantial advancements in Information and Communication Technologies enabled the development of original software solutions that can provide support to problems people face in their daily activities. Among the technical advancements that have fostered the development of such innovative applications, the gradual transition from stand-alone and centralized architectures to distributed ones and the explosive growth in the area of mobile communication have played a central role. The pro table combination of these advancements has led to the rise of the so-called Mobile Information Systems. Unfortunately, ful lling such a type of systems is very challenging and several aspects have to be taken into account during the design and development of both the front and back ends of the proposed solution. Within this context in this thesis we investigate two main aspects: 1) the elicitation of requirements and the design of usable mobile User Interfaces and 2) the information exchange in a back end combining heterogeneous services, more speci cally services based on the standards of the World Wide Web (W3C) and Open Geospatial Consortium (OGC). In particular, we develop a methodology to support the design of mobile solutions when usability requirements play a key role for the success of the whole system. We also present a solution for a seamless integration of services developed according to di erent standards with speci c focus on the issue of proper management of geospatial metadata in a W3C standards-oriented infrastructure. The result of our investigation is an extension for a key W3C standard for the metadata retrieval to support OGC metadata. The case study considered in our work is a Mobile Information System to be used by a community of farmers in Sri Lanka. [edited by Author]
XII n.s.
Beltrán, Martínez Victoria. "Contributions to presence-based systems for deploying ubiquitous communication services." Doctoral thesis, Universitat Politècnica de Catalunya, 2011. http://hdl.handle.net/10803/131274.
Повний текст джерелаNext-Generation Networks (NGNs) son las redes de próxima generación que soportaran la convergencia de redes de telecomunicación inalámbricas y fijas. La base de NGNs es el IMS (IP Multimedia Subsystem), introducido por el 3GPP. El servicio de presencia nació de aplicaciones de mesajería instantánea. La información de presencia de un usuario consiste en cualquier tipo de información que es de utilidad para manejar las comunicaciones con el usuario. El servicio de presencia es una parte esencial del IMS para el despliegue de servicios ubicuos. SIMPLE es el protocolo estándar para manejar presencia y mensajes instantáneos en el IMS. Este protocolo distribuye la información de presencia de los usuarios a través de suscripciones, notificaciones y publicaciones. SIMPLE genera mucho tráfico por la diseminación constante de información de presencia y el mantenimiento de las suscripciones, lo cual puede saturar los servidores de red. Este problema es todavía más perjudicial en el IMS, debido al carácter centralizado de sus servidores. Un factor clave en el éxito de NGNs es proporcionar a los usuarios servicios ubicuos que esten integrados en su vida diaria y asi interactúen con los usuarios constantemente. La personalización de estos servicios basado en los usuarios es imprescindible para el éxito de los mismos. Para este fin, la información de presencia es considerada como una herramienta base. La tesis realizada se puede resumir brevemente en los siguientes contribuciones: Proponemos filtrar y controlar el ratio de las publicaciones de presencia para reducir la cantidad de información enviada en la red de acceso. Modelamos la información de presencia probabilísticamente mediante cadenas de Markov, y analizamos la eficiencia de controlar el ratio de publicaciones con una cadena de Markov. Los resultados muestran que este mecanismo puede efectivamente reducir el tráfico de presencia. Estudiamos matemáticamente la cantidad de tráfico de presencia generada entre dominios y analizamos el rendimiento de tres estrategias para reducir este tráfico. Proponemos una estrategia, la cual llamamos Common Subscribe (CS), para reducir el tráfico de presencia entre dominios federados. Comparamos el tráfico generado por CS frente a otras estrategias de optimización. Los resultados de este análisis muestran que CS es la estrategia más efectiva. Analizamos la carga en numero de mensajes introducida por diferentes optimizaciones de tráfico de presencia en los servidores centralizados del IMS. Nuestra propuesta, CS, combinada con un RLS (i.e, una optimización de SIMPLE), es la unica optimización que reduce la carga en el IMS. Estimamos la eficiencia del RLS, deduciendo que un RLS no es eficiente en ciertas circunstancias, en las que es preferible no usar esta optimización. Proponemos un sistema de colas para optimizar el tráfico de presencia tanto en el núcleo de red como en la red de acceso, y que puede adaptar el ratio de publicación y notificación en base a varios parametros de calidad (e.g., maximo retraso). Modelamos y analizamos este sistema de colas probabilísticamente en diferentes escenarios. Proponemos una arquitectura totalmente distribuida para manejar las información de presencia del usuario, de la cual hemos implementado un prototipo. Esta propuesta permite la integracion sencilla y personalizada al usuario de servicios de Internet, como HTTP o VoIP, asi como la optimizacón de estos servicios. Hemos desarrollado SECE (Sense Everything, Control Everything), una plataforma donde los usuarios pueden crear reglas para manejar todas sus comunicaciones y servicios de Internet de forma proactiva. SECE interactúa con una multitud de servicios para conseguir todo el contexto possible del usuario. Hemos desarollado un lenguaje formal que parace como Ingles natural para que los usuarios puedan crear sus reglas. Hemos mejorado SECE para descubrir servicios web automaticamente a través del lenguaje OWL (Web Ontology Language).
Clark, R. J. (Russell J. ). "Solutions for ubiquitous information services : multiple protocols and scalable servers." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/8489.
Повний текст джерелаFekih, Hassen Wiem. "A ubiquitous navigation service on smartphones." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI006.
Повний текст джерелаPedestrian navigation is a growing research field, which aims at developing services and applications that ensure the continuous positioning and navigation of people inside and outside covered areas (e.g. buildings). In this thesis, we propose a ubiquitous pedestrian navigation service based on user preferences and the most suitable efficient available positioning technology (e.g. WiFi, GNSS). Our main objective is to estimate continuously the position of a pedestrian carrying a smartphone equipped with a variety of technologies and sensors. First, we propose a novel positioning technology selection algorithm, called UCOSA for the complete ubiquitous navigation service in indoor and outdoor environments. UCOSA algorithm starts by inferring the need of a handover between the available positioning technologies on the overlapped coverage areas using fuzzy logic technique. If a handover process is required, a score is calculated for each captured Radio Frequency (RF) positioning technology. The score function consists of two parts: the first part represents the user preferences weights computed based on the Analytic Hierarchy Process (AHP). Whereas, the second part provides the user requirements (normalized values). UCOSA algorithm also integrates the Pedestrian Dead Reckoning (PDR) positioning technique through the navigation process to enhance the estimation of the smartphone's position. Second, we focus on the RSS fingerprinting positioning technique as it is the most widely used technique, which principle is to return the smartphone's position by comparing the real time recorded RSS values with the radiomap (i.e. a database of previous stored RSS values). Most of radiomap are organized in a grid, formed or Reference Point (RP): we propose a new design of radiomap which complements the grid with other RPs located at the center of gravity of each grid square. Third, we address the challenge of constructing a graph for a multi-floor building. We propose an algorithm that starts by creating the horizontal graph of each floor, separately, and then, adds vertical links between the different floors. Finally, we implement a novel algorithm, called SIONA that calculates and displays in a continuous manner the pathway between two distinct points being located indoor or outdoor. We conduct several real experiments inside the campus of the University of Passau in Germany to evaluate the performance of the proposed algorithms. They yield promising results in terms of continuity and accuracy (around 1.8 m indoor) of navigation service
Santos, Pedro Emanuel Albuquerque e. Baptista dos. "Personalization platform for multimodal ubiquitous computing applications." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/11063.
Повний текст джерелаWe currently live surrounded by a myriad of computing devices running multiple applications. In general, the user experience on each of those scenarios is not adapted to each user’s specific needs, without personalization and integration across scenarios. Moreover, developers usually do not have the right tools to handle that in a standard and generic way. As such, a personalization platform may provide those tools. This kind of platform should be readily available to be used by any developer. Therefore, it must be developed to be available over the Internet. With the advances in IT infrastructure, it is now possible to develop reliable and scalable services running on abstract and virtualized platforms. Those are some of the advantages of cloud computing, which offers a model of utility computing where customers are able to dynamically allocate the resources they need and are charged accordingly. This work focuses on the creation of a cloud-based personalization platform built on a previously developed generic user modeling framework. It provides user profiling and context-awareness tools to third-party developers. A public display-based application was also developed. It provides useful information to students, teachers and others in a university campus as they are detected by Bluetooth scanning. It uses the personalization platform as the basis to select the most relevant information in each situation, while a mobile application was developed to be used as an input mechanism. A user study was conducted to assess the usefulness of the application and to validate some design choices. The results were mostly positive.
Lui, Siu Man. "Impacts of information technology commoditization : selected studies from ubiquitous information services /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?ISMT%202005%20LUI.
Повний текст джерелаSumter, George C. (George Cody). "Privacy preservation and auditing for ubiquitous mobile sensing applications and services." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78501.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 77-79).
The recent proliferation of mobile phones, with their many associated sensors, has opened the door to an entirely new range of insights and applications with a host of accompanying privacy concerns. In this thesis, we explore techniques for privacy preservation, transparency, and auditing for mobile sensing applications and services. We demonstrate the feasibility of privacy-conscious defaults with the deployment of an open-source mobile sensing framework and examine the requirements for this as a basis of a forced-transparency system. This system is then examined within the scope of present legal and policy frameworks and assessed for use in both open and closed source mobile sensing platforms and frameworks. Finally, we highlight the use of a mobile application prototyping service as a means for early trend detection for future privacy research.
by George C. Sumter.
S.M.in Technology and Policy
Perez, Alfredo Jose. "An Architecture for Global Ubiquitous Sensing." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3276.
Повний текст джерелаGuenkova-Luy, Teodora. "Multimedia networking coordination of multimedia services in next generation mobile networks." Saarbrücken VDM, Müller, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=3037222&prov=M&dok_var=1&dok_ext=htm.
Повний текст джерелаBalegh, Walid. "Communication and Adaptation in a Ubiquitous Environment." Thesis, Linnéuniversitetet, Institutionen för datavetenskap och medieteknik (DM), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-76624.
Повний текст джерелаLaverton, Christian. "Social Tagging of Services to Support End User Development in Ubiquitous Collaborative Environments." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9581.
Повний текст джерелаTailorability in ubiquitous computing systems is needed at different levels, depending on the targeted end users. For inexperienced end users lacking computer competency, high level mechanisms for tailoring are needed. Systems such as ASTRA, which use a service oriented architecture, can provide such high level tailorability through service composition. With service composition, services can be combined and configured to form applications. However, using service composition introduces new challenges for end users. To find appropriate services, users need mechanisms for searching and browsing services. Equally important is it that users are able to understand how services work and what functionality they offer. Service descriptions can ease this task, but the problem with existing approaches to service descriptions is that they are not intended for end users and are hard to understand. This work looks at social tagging, which is a collaborative process where users attach labels or tags to items. This leads to user created metadata, as opposed to metadata created by experts. By introducing social tagging in ASTRA to describe services, users are provided with a framework for sharing their understanding of services with fellow users. To create a solution for social tagging for service descriptions, a thorough problem analysis was performed. The analysis considered the design space of tagging systems to find appropriate design choices in the problem context. Providing several tag visibility levels was identified as important, especially community tagging. The quality of tags as seen from the community members' perspective is likely to increase, as members of communities often share similar opinions and understandings. An important difference identified between existing tagging systems and tagging of services is that services can be embedded in physical devices. Thus, services can be discovered and accessed physically, which means that physical access to the services' tags should be supported. A requirements specification for a tagging system was specified, focusing on the platform requirements for basic tagging mechanisms, tag based navigation, and searching. The requirements lead to a design of platform architecture, aiming at extending the UbiCollab platform with social tagging functionality. The architecture uses a client/server solution, where the server service is shared among a network of users and handles public and community level tags. The client service is a local service which handles private tags, and acts as an intermediary between end user tools and the server service. A prototype of the platform services and an end user tool was implemented. The implementation is demonstrated through scenarios, showing possible uses of the tagging system.
Papadopoulos, Homer. "Use of multimedia services within ubiquitous environments : the role of place in the usage process of mobile data services." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505711.
Повний текст джерелаShaheed, Amjad. "A framework for the visualisation and control of ubiquitous devices, services and digital content." Thesis, Liverpool John Moores University, 2011. http://researchonline.ljmu.ac.uk/6018/.
Повний текст джерелаFrigui, Soumaya <1985>. "The Ubiquitous Role of New Social Media Channels and Innovative Mobile Services: Are Consumers Ready?" Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7374/1/Tesi_def._Frigui_Soumaya.pdf.
Повний текст джерелаFrigui, Soumaya <1985>. "The Ubiquitous Role of New Social Media Channels and Innovative Mobile Services: Are Consumers Ready?" Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7374/.
Повний текст джерелаRieger, Andreas Verfasser], and Sahin [Akademischer Betreuer] [Albayrak. "Framework for Building Situation-Aware Ubiquitous Services in Smart Home Environments / Andreas Rieger. Betreuer: Sahin Albayrak." Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2011. http://d-nb.info/1014946840/34.
Повний текст джерелаGarcía, Davis Ernesto J. "Contribution to the publish/subscribe communication model for the development of ubiquitous services in wireless sensor networks." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/667126.
Повний текст джерелаEls avenços en les tecnologies sense fils i al ràpid desenvolupament de l'electrònica integrada, ha convertit les xarxes de sensors sense fils (WSN) en una de les tecnologies claus de l'Internet de les Coses (Iot). Gràcies a la capacitat que tenen aquestes xarxes de mesurar els fenòmens físics del seu entorn, processar i comunicar aquesta informació utilitzant tecnologies sense fils, s'han destacat en el desenvolupament d'aplicacions que responguin o s'adaptin al context d'un usuari, com és el cas dels entorns ubics com a ciutats intel·ligents, automatització industrial, salut electrònica entre d'altres. A més, el IOT ha obert la possibilitat que els objectes o dispositius intel·ligents també siguin capaços d'intercanviar informació d'estat, condicions i capacitat per tal d'interactuar entre si, de la mateixa manera que els éssers humans ho han fet a través de sistemes basats en presència. Aquests sistemes requereixen informació d'un esdeveniment en temps real per reaccionar de manera oportuna a les condicions o al context de l'usuari o dispositiu. Aquestes aplicacions obren nous desafiaments en l'administració dels recursos de WSN, ja que aquestes xarxes operen en entorns que generalment són propensos a la pèrdua de paquets i consten de nodes generalment petits amb recursos limitats en memòria, processament, ample de banda i alimentació. El principal objectiu d'aquesta tesi és el desenvolupament de diversos mecanismes que permetin l'adequació dels protocols d'Publish / Subscribe a les característiques i limitacions de la WSN per a la provisió de serveis ubics en el context de la IOT. A més, es brinda suport de QoS a través de mecanismes que proporcionen fiabilitat i puntualitat en el lliurament de paquets i s'apliquen tècniques d'agregació de dades per a ser eficients en el consum d'energia i l'ample de banda de la WSN. La nostra investigació proposa una arquitectura per a proporcionar un servei de presència per WSN basat en un model de Publish / Subscribe distribuït i centrat en mecanismes com ara l'agregació de dades i la publicació de missatges en demanda per aconseguir eficiència en l'energia i l'ample de banda . Tots aquests mecanismes han estat aplicats en el disseny d'un sistema anomenat Pash dirigit al control de la llar basat en el concepte de Vida Assistida (AAL). La fiabilitat proporcionada pels protocols de Publish / Subscribe WSN és de gran importància en el disseny d'aplicacions que requereixen rebre un missatge per reaccionar a temps o en temps real davant un esdeveniment. Inicialment enfoquem el nostre estudi en augmentar la proporció de lliurament de paquets (PDR) en el node de destinació a través de la millora dels mecanismes de fiabilitat. Avaluem el mecanisme de fiabilitat del protocol MQTT-SN i diversos mecanismes proposats del protocol COAP. A partir d'aquesta avaluació, proposem un nou i senzill mecanisme de retransmissió adaptable per respondre a la pèrdua de paquets de la manera més adequada. Finalment, considerem que les aplicacions com: salut electrònica, control d'infraestructura crítica i monitoratge, entre d'altres, han de complir diferents requisits de QoS, com la fiabilitat i la puntualitat per a cada tipus de missatge rebut. A més, les tècniques d'agregació de dades tenen un paper important en WSN per reduir el consum d'energia i l'ample de banda. En aquesta tesi, proposem un mecanisme que proporciona a la aplicació tres nivells de QoS diferents: proporcionem una millora del nostre mecanisme de retransmissió anterior per a la fiabilitat, incloem l'agregació de dades en el nostre mecanisme de fiabilitat i proporcionem un mecanisme de puntualitat en el lliurament de paquets.
Wullems, Christian John. "Engineering Trusted Location Services and Context-aware Augmentations for Network Authorization Models." Thesis, Queensland University of Technology, 2005. https://eprints.qut.edu.au/16707/1/Christian_Wullems_Thesis.pdf.
Повний текст джерелаWullems, Christian John. "Engineering Trusted Location Services and Context-aware Augmentations for Network Authorization Models." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16707/.
Повний текст джерелаFaure, Matthieu. "Mise en oeuvre de la composition de services scénarisée et centrée utilisateur pour les environnements pervasifs collaboratifs." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2012. http://tel.archives-ouvertes.fr/tel-00790156.
Повний текст джерелаHuhtinen, J. (Jouni). "Utilization of neural network and agent technology combination for distributed intelligent applications and services." Doctoral thesis, University of Oulu, 2005. http://urn.fi/urn:isbn:9514278550.
Повний текст джерелаLiu, Jinshan. "Découverte de services sensible à la qualité de service dans les environnements de l'informatique diffuse." Phd thesis, Université de Versailles-Saint Quentin en Yvelines, 2006. http://tel.archives-ouvertes.fr/tel-00469433.
Повний текст джерелаSampat, Miten. "Enabling Locative Experiences." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/35975.
Повний текст джерелаMaster of Science
Jardim, Carlos Henrique Odenique. "Usando Serviços Web para integrar aplicações cientes de contexto." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-14092006-114217/.
Повний текст джерелаUbiquitous computing has became a revolution in terms of the user-computer interaction by providing technologies that seamlessly integrate themselves to people?s everyday life. Context-aware computing, which is an important research theme in ubiquitous computing, has been contributing for the building of applications that are capable both to customize and adapt themselves aiming to support a user without disturb him. A great challenge in ubiquitous computing has been the support to build context-aware aplications. For that reason, the it has been developed the Context Kernel Web Service, which is a service infrastructure that makes use of Web-based specifications and technologies in order to promote the management and the interchange of context information. In this work the usage of Web Services was analyzed by using the Context Kernel to integrate applications in scenarios of cooperative work and e-learning. As a result, a list of lessons learned was ellaborated with respect to the use and the study of Web Services specifications for context-aware computing. Other results include a context information specifications for metadata about group and educational resources as well as examples of how to use the Context Kernel to leverage applications context-aware.
Jonsson, Katrin. "Digitalized industrial equipment an investigation of remote diagnostics services /." Doctoral thesis, Umeå : Institutionen för informatik, Umeå universitet, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-33717.
Повний текст джерелаBarrientos, Alfredo, Julissa E. Calderón, and Stephanie Mujica. "Context Awareness & Pervasive Computing: Arquitectura lógica de un sistema perceptivo al contexto de un usuario." The International Institute of Informatics and Systemics, 2015. http://hdl.handle.net/10757/608513.
Повний текст джерелаLos Sistemas Perceptivos del Contexto son capaces de reconocer y anticipar proactivamente a necesidades próximas del usuario teniendo en cuenta intereses, ubicación y proximidad, incluso sin necesidad de comunicárselo de manera explícita. Esto gracias al aprovechamiento de las redes sociales como la herramienta de “Inteligencia de Negocios” que permitirá no sólo conectar a los consumidores con las marcas sino también para entender a los clientes finales y con ello desarrollar productos y servicios especializados. Context Awareness se apoya de los Sistemas de Posicionamiento Global (GSP) quienes facilitan servicios basados en la ubicación del usuario para la creación de soluciones contextuales. Diversas arquitecturas son propuestas para el desarrollo de soluciones contextuales sin embargo carecen de ubicuidad, lo que limita la aplicabilidad de las mismas. Este estudio propone una arquitectura lógica para un Sistema Perceptivo del Contexto que permita agilizar la fase de desarrollo reflejando los niveles de dependencia entre componentes hardware y software. A modo validación se proponen escenarios aplicativos que consumen los servicios y dominios propuestos en la arquitectura con ayuda del procesamiento de los sensores y dispositivos inteligentes del mercado móvil. De esta manera, el estudio mejora el desarrollo de los Sistemas Inteligentes.
Faure, Matthieu. "Management of scenarized user-centric service compositions for collaborative pervasive environments." Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20110/document.
Повний текст джерелаPervasive (or ubiquitous) computing is a paradigm for environments containing distributedinterconnected devices that embed electronics. These devices provide a remote access to numerousfunctionalities that assist us in our daily life. Service-Oriented Architectures are suitable to design softwarefor pervasive environments. Indeed, each device provides its own set of functionalities as services.Without any extra mechanism, users can only use a single service at a time. Nevertheless, their needsusually correspond to scenarios which involve a composition of multiple services, provided by multipledevices.In this thesis, we advocate that a pervasive system must, on the one hand, enable users to easily expresstheir needs through scenario creation and, on the other hand, propose to users a representation of theircontext so that they can benefit from both their environment and its changes. In addition, the presence ofseveral users implies that users must be able to collaborate.Our contribution, named SaS (Scenarios as Services), fulfils these requirements. It proposes aninteroperable approach that adapts to its environment. It provides users with a customizable andpersistent representation of their context and includes a scenario description language targeted to users.Scenarios are easy to control, customize and reuse. SaS schedules the step-by-step execution ofscenarios to adapt to environmental changes and benefit from user mobility (scenario execution split over time on successive distinct sites). Finally, SaS includes scenario sharing mechanisms which are abasis for collaboration. A prototype of SaS, based on industrial standards (e.g., OSGi), proves thefeasibility of our contribution and serves for its evaluation on a simple use case
Salma, Najar. "Adaptation des services sensibles au contexte selon une approche intentionnelle." Phd thesis, Université Panthéon-Sorbonne - Paris I, 2014. http://tel.archives-ouvertes.fr/tel-00989775.
Повний текст джерелаYachir, Ali. "Composition dynamique de services sensibles au contexte dans les systèmes intelligents ambiants." Thesis, Paris Est, 2014. http://www.theses.fr/2014PEST1053/document.
Повний текст джерелаWith the appearance of the paradigms of the ambient intelligence and ubiquitaire robotics, we attend the emergence of new ambient intelligent systems to create and manage environments or intelligent ecosystems in a intuitive and transparent way. These environments are intelligent spaces characterized in particular by the opening, the heterogeneousness, the uncertainty and the dynamicité of the entities which establish(constitute) them. These characteristics so lift(raise) considerable scientific challenges for the conception(design) and the implementation of an adequate intelligent system. These challenges are mainly among five: the abstraction of the representation of the heterogeneous entities, the management of the uncertainties, the reactivity in the events, the sensibility in the context and the auto-adaptation
Rowan, James Thomas Jr. "Digital Family Portraits: Support for Aging in Place." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7472.
Повний текст джерелаKheiravar, Sara [Verfasser], and Thorsten [Akademischer Betreuer] Blecker. "Exploring the acceptance of ubiquitous computing-based Information services in brick and mortar retail environments - an integration of UTAUT2 and media system dependency theory / Sara Kheiravar ; Betreuer: Thorsten Blecker." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2018. http://d-nb.info/1163662313/34.
Повний текст джерелаMoreno, Diana. "Modèles, outils et plate-forme d'exécution pour les applications à services dynamiques." Phd thesis, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00875053.
Повний текст джерелаRodrigues, André Luiz Barbosa. "Uma infraestrutura para monitoramento de sistemas cientes do contexto." Universidade do Estado do Rio de Janeiro, 2009. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=7508.
Повний текст джерелаUbiquitous and pervasive applications are aware of the context of the used resources, regarding their availability and quality. This class of application can benefit from mechanisms to discover resources that meet their non-functional requirements and mechanisms to monitor the quality of those resources. We proposed architecture for two services that should be included in the supporting infrastructure used by the mentioned applications: a Context Service that provides access to context information; and a Discovery Service, which allows the dynamic discovery of resources, considering context constraints to be satisfied. These services rely on Resource Agents, which monitor the actual resources and sensors. A reference implementation was developed, providing the mentioned services as Web Services and implementing the Resource Agents using a simple design pattern. To evaluate these services were employed them as the infrastructure to design a fault tolerant system and a remote assisted living application. The performance of the services was also evaluated.
Damou, Elmehdi. "ApAM : Un environnement pour le développement et l'exécution d'applications ubiquitaires." Phd thesis, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00911462.
Повний текст джерелаSantana, Luiz Henrique Zambom. "ADESCOU : Uma Abordagem para o desenvolvimento de software para computação ubíqua." Universidade Federal de São Carlos, 2008. https://repositorio.ufscar.br/handle/ufscar/400.
Повний текст джерелаFinanciadora de Estudos e Projetos
This dissertation presents an approach to the software development in the Ubiquitous Computing, which instantiates the Rational Unified Process (RUP), based on Ontologies, Semantic Web Services, and Software Agents. Ontologies are employed to improve the description of the use context, enabling the applications to be context-aware. Semantic Web Services are used as software components distributed over the Internet, and are composed to perform complex tasks. Software Agents manages the applications using the Ontologies and the Semantic Web Services. A framework, called UBICK, was built to facilitate the design and the implementation of ubiquitous applications, based on components reuse. A case study illustrates the use of this approach in order to develop an Electronic Reflexive Portfolio in the medical education domain.
Esta dissertação apresenta uma abordagem para orientar o desenvolvimento de software na Computação Ubíqua que instancia o Rational Unified Process (RUP), com base em Ontologias, Serviços Web Semânticos, Agentes de Software. Ontologias são empregadas para facilitar o desenvolvimento de aplicações sensíveis a contexto. Serviços Web Semânticos são utilizados como componentes de software distribuídos pela Internet e são compostos para realizar tarefas complexas. Agentes de Software gerenciam as aplicações, facilitando o uso das Ontologias e dos Serviços Web Semânticos. Um framework, denominado UBICK, foi construído a fim de estruturar o projeto e implementação das aplicações ubíquas, baseado no reuso de componentes. Como estudo de caso, apresenta-se o uso da abordagem proposta no desenvolvimento de um Portfólio Reflexivo Eletrônico para o domínio de ensino na medicina.
Zanuz, Luciano. "SMALLSOA – Um Motor para Execução de Composições de Serviços em Ambientes Móveis." Universidade do Vale do Rio do Sinos, 2009. http://www.repositorio.jesuita.org.br/handle/UNISINOS/2269.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
Arquiteturas orientadas a serviços (SOA) voltaram a ganhar destaque, após o surgimento dos web services, como uma tecnologia capaz de melhorar consideravelmente a interoperabilidade entre aplicações de software. Para apoiar a crescente necessidade de colaboração entre pessoas fisicamente separadas, como em sistemas de trabalho ou ensino à distância, ambientes colaborativos estão sendo construídos utilizando a Internet como plataforma. Com a popularização dos dispositivos móveis, softwares que permitem interações entre quaisquer dispositivos, móveis ou não, utilizando tecnologias variadas de comunicação rumo a um mundo ubíquo, vêm ganhando destaque. SOA, por sua vez, está sendo considerada uma das plataformas mais indicadas para sistemas colaborativos ubíquos. Este trabalho apresenta SmallSOA, um motor para execução de composições de serviços em ambientes móveis, um dos componentes centrais da arquitetura orientada a serviços chamada U-SOA que o grupo de pesquisa de Engenharia de Software e Linguagens de Pr
Services-oriented architectures (SOA) restarted to gain prominence after the emergence of web services as a technology able to improve the interoperability between software applications. To support the growing need for collaboration between people physically separated as in distance work or learning systems, collaborative environments are being constructed using the Internet as platform. With the popularization of mobile devices, software that allows interactions between any devices, mobile or not, using different communication technologies towards a ubiquitous world are gaining prominence. SOA, in its turn, is considered one of the most suitable platforms for ubiquitous collaborative systems. This work presents SmallSOA, an engine for services compositions execution on mobile environments, one of the central components of the service oriented architecture called U-SOA that the research team on Software Engineering and Programming Languages at Unisinos is developing. An engine for services compositions exec
Bousselmi, Ayoub. "Conception et optimisation d’un système d’information d’aide à la mobilité : une approche multi-agent pour la recherche et la composition des services dans un espace ubiquitaire." Thesis, Ecole centrale de Lille, 2015. http://www.theses.fr/2015ECLI0011/document.
Повний текст джерелаIn a context of ubiquitous mobility, different objects are able to interact with users to provide them with innovative services and help them optimize their travel plans. Indeed, the number of users and the number of service providers requested by these users are actively growing. This growth involves an aspect of competition and requires optimized choices. In this context, the aim of this thesis is to design and optimize a mobility aid system that covers not only transport services but also tourist services, cultural services and many others. The research presented in this thesis proposes the establishment of a Plateforme de Recherche et de composition des Services d'Aide à la Mobilité (PRoSAM) to optimize research, composition and distribution tasks of advanced mobility information. The dynamic and distributed aspects of the problem have led us to adopt an agent-oriented modeling approach to cope with the conditions of a ubiquitous environment. Thanks to a dynamic role switching strategy of user agents and an innovative negotiation protocol, customers are able to exchange services autonomously and to establish full or partial agreements in order to optimize communications over the network. Finally, the simulation results presented in this thesis demonstrate the effectiveness of the proposed approaches
Zeidler, Andreas. "A Distributed Publish/Subscribe Notification Service for Pervasive Environments." Phd thesis, [S.l.] : [s.n.], 2005. http://elib.tu-darmstadt.de/diss/000519.
Повний текст джерелаLiu, Yong. "Service discovery in an open ubiquitous computing environment." [Bloomington, Ind.] : Indiana University, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3386698.
Повний текст джерелаTitle from PDF t.p. (viewed on Jul 22, 2010). Source: Dissertation Abstracts International, Volume: 70-12, Section: B, page: 7673. Adviser: Kay Connelly.
Karlsen, Bjarte Stien. "Enabling a Ubiquitous Location Based Service on Campus." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9279.
Повний текст джерелаThis thesis have looked at two subjects that are a necessary part of a Location Based Service. Guidelines on how to make a Location Model of the campus has been suggested. The proposed model enhanced already existing suggestions and provides support for different queries. Testing was done with Ekahau WLAN positioning technology to obtain location information. The results of the testing showed that the technology was suitable to provide a services that required accuracy at room-level. Services that required a finer grained location estimate where not feasible.
Brustad, Andreas Larsen, and Christian Hågensen Mosveen. "UbiCollab: A Service Architecture for Supporting Ubiquitous Collaboration." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for datateknikk og informasjonsvitenskap, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12787.
Повний текст джерелаSpikol, Daniel. "Playing and Learning Across Locations: : Indentifying Factors for the Design of Collaborative Mobile Learning." Licentiate thesis, Växjö University, School of Mathematics and Systems Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-3698.
Повний текст джерелаThe research presented in this thesis investigates the design challenges associated with the development and use of mobile applications and tools for supporting collaboration in educational activities. These technologies provide new opportunities to promote and enhance collaboration by engaging learners in a variety of activities across different places and contexts. A basic challenge is to identify how to design and deploy mobile tools and services that could be used to support collaboration in different kinds of settings. There is a need to investigate how to design collaborative learning processes and to support flexible educational activities that take advantage of mobility. The main research question that I focus on is the identification of factors that influence the design of mobile collaborative learning.
The theoretical foundations that guide my work rely on the concepts behind computer supported collaborative learning and design-based research. These ideas are presented at the beginning of this thesis and provide the basis for developing an initial framework for understanding mobile collaboration. The empirical results from three different projects conducted as part of my efforts at the Center for Learning and Knowledge Technologies at Växjö University are presented and analyzed. These results are based on a collection of papers that have been published in two refereed international conference proceedings, a journal paper, and a book chapter. The educational activities and technological support have been developed in accordance with a grounded theoretical framework. The thesis ends by discussing those factors, which have been identified as having a significant influence when it comes to the design and support of mobile collaborative learning.
The findings presented in this thesis indicate that mobility changes the contexts of learning and modes of collaboration, requiring different design approaches than those used in traditional system development to support teaching and learning. The major conclusion of these efforts is that the learners’ creations, actions, sharing of experiences and reflections are key factors to consider when designing mobile collaborative activities in learning. The results additionally point to the benefit of directly involving the learners in the design process by connecting them to the iterative cycles of interaction design and research.
NETO, ERMINIO DA CAS. "FREQUENCY SHARING BETWEEN UBIQUITOUSLY DEPLOYED FIXED SATELLITE SERVICE EARTH STATIONS AND STATIONS OF THE TERRESTRIAL SERVICES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2016. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=33371@1.
Повний текст джерелаCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
PROGRAMA DE EXCELENCIA ACADEMICA
O crescente interesse em Sistemas de alta densidade do Serviço Fixo por Satélite (High Density Fixed-Satellite Services - HDFSS) deu origem a estudos na União Internacional de Telecomunicações (UIT) para que sua implantação siga recomendações no intuito de minimizar a interferência em outros serviços de telecomunicações. Tais sistemas são interessantes devido à sua flexibilidade na implantação ubíqua de terminais de pequeno porte, sem a necessidade de coordenação. Com o objetivo de regulamentar a implantação de tais sistemas, o Grupo de Estudos 4 do Setor de Radio comunicações da UIT, que trata do serviço fixo por satélite, tem desenvolvido e sugerido estudos visando à criação de uma recomendação contendo metodologias para o compartilhamento de frequências envolvendo estações terrenas (terminais) ubiquamente distribuídas. Assim, em 2003, na Conferência Mundial de Radio comunicações da UIT, foram identificadas faixas de frequências específicas para a operação de sistemas HDFSS, sendo que grande parte das faixas de frequência identificadas é compartilhada, em caráter primário, com os sistemas do Serviço Fixo Terrestre (FS) e, por este motivo, é importante que sejam desenvolvidos estudos para regulamentação e o controle deste compartilhamento. No âmbito da UIT a principal motivação desses estudos é a análise da interferência provocada por sistemas HDFSS implantados em um país em serviços que compartilham a mesma frequência em um país vizinho. É neste cenário que o presente trabalho propõe uma metodologia para avaliação da interferência produzida por terminais ubiquamente distribuídos em sistemas FS. Essa metodologia visa a determinação de uma região de coordenação, possibilitando, assim, que terminais sejam implantados livremente fora desta região, garantindo níveis adequados de interferência nos sistemas FS.
The growing interest in High-Density Fixed Service Satellite systems (HDFSS) has led to studies at the International Telecommunication Union (ITU) aiming the development of a recommendation for guidance on its implementation in order to minimize interference affecting other telecommunications services. Such systems are of interest due to their flexibility in the ubiquitous deployment of small terminals, Without the need for coordination. In order to regulate the implementation of such systems, the Study Group 4 of the ITU Radiocommunication Sector, responsible for the fixed-satellite service, has developed and suggested studies aimed at creating a recommendation containing methodologies for frequency sharing involving earth stations (terminals) ubiquitously distributed. Thus, in 2003, at the World Radiocommunication Conference of the ITU, specific frequency bands for HDFSS systems operation have been addressed, and most of the frequency bands identified are shared, on a primary basis, With the terrestrial fixed service systems (FS) and, for this reason, such studies for regulation and control of this share has become important. The ITU main motivation for these studies is the analysis of the interference caused by the HDFSS systems deployed in a country, into the communication sevices of neighboring countries. In this scenario, this paper proposes a methodology for evaluating interference produced by a ubiquitously distributed terminals into FS systems. This method aims at determining a coordination region, thus enabling terminals to be freely deployed outside this region, without producing unacceptable levels of interference into the FS receivers.
Lee, Choon-Hwa. "Context-aware, ubiquitous service discovery and delivery for mobile clients." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0000864.
Повний текст джерелаMorand, Denis. "Cilia : un framework pour le développement d'applications de médiation autonomiques." Phd thesis, Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00952107.
Повний текст джерелаNassar, Jad. "Ubiquitous networks for Smart Grids." Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1I053/document.
Повний текст джерелаSmart Grids aim to transform the current electric grid into a "smarter" network where energy production is decentralized and automated, which facilitates the integration of renewable energy resources. This evolution is made possible thanks to the use of a communication network for the multiple heterogeneous data exchanges of the Smart Grids. Hence, the aim of this thesis is to propose an efficient communication paradigm in terms of quality of service for Smart Grids based on wireless sensor networks.First, we study data routing in Smart Grids with the RPL standard. Nevertheless, RPL is not suitable for Smart Grid applications in terms of quality of service. Therefore, we propose an objective function for RPL that takes different features of both nodes and links into consideration. Results show that our approach improves network performance compared to existing solutions in terms of packet delivery ratio, network lifetime, latency and traffic differentiation.Then, we also propose a more efficient data collection by introducing self-organization and data reduction for these wireless sensors. The goal is to predict the value of the measured data rather than transmitting them. Another explored approach is to aggregate the different messages sent across the network while considering their different requirements in terms of quality of service.These two approaches reduce the energy consumption while respecting the requirements of the different applications of the Smart Grids
Ingmarsson, Magnus. "Modelling User Tasks and Intentions for Service Discovery in Ubiquitous Computing." Licentiate thesis, Linköping University, Linköping University, MDA - Human Computer Interfaces, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8319.
Повний текст джерелаUbiquitous computing (Ubicomp) increases in proliferation. Multiple and ever growing in numbers, computational devices are now at the users' disposal throughout the physical environment, while simultaneously being effectively invisible. Consequently, a significant challenge is service discovery. Services may for instance be physical, such as printing a document, or virtual, such as communicating information. The existing solutions, such as Bluetooth and UPnP, address part of the issue, specifically low-level physical interconnectivity. Still absent are solutions for high-level challenges, such as connecting users with appropriate services. In order to provide appropriate service offerings, service discovery in Ubicomp must take the users' context, tasks, goals, intentions, and available resources into consideration. It is possible to divide the high-level service-discovery issue into two parts; inadequate service models, and insufficient common-sense models of human activities.
This thesis contributes to service discovery in Ubicomp, by arguing that in order to meet these high-level challenges, a new layer is required. Furthermore, the thesis presents a prototype implementation of this new service-discovery architecture and model. The architecture consists of hardware, ontology-layer, and common-sense-layer. This work addresses the ontology and common-sense layers. Subsequently, implementation is divided into two parts; Oden and Magubi. Oden addresses the issue of inadequate service models through a combination of service-ontologies in concert with logical reasoning engines, and Magubi addresses the issue of insufficient common-sense models of human activities, by using common sense models in combination with rule engines. The synthesis of these two stages enables the system to reason about services, devices, and user expectations, as well as to make suitable connections to satisfy the users' overall goal.
Designing common-sense models and service ontologies for a Ubicomp environment is a non-trivial task. Despite this, we believe that if correctly done, it might be possible to reuse at least part of the knowledge in different situations. With the ability to reason about services and human activities it is possible to decide if, how, and where to present the services to the users. The solution is intended to off-load users in diverse Ubicomp environments as well as provide a more relevant service discovery.
Report code: LiU-Tek-Lic-2007:14.