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Dissertations / Theses on the topic 'Ubiquitous computing'
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Schmidt, Albrecht. "Ubiquitous computing : computing in context." Thesis, Lancaster University, 2003. http://eprints.lancs.ac.uk/12221/.
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Rivoli, Domenico. "Ubiquitous Computing: Una Panoramica." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
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Con questo documento voglio introdurre il lettore al concetto ingegneristico di Ubiquitous Computing. Partendo da un'analisi dei suoi connotati generali, verrà tracciato un percorso che tratterà nel dettaglio i vari aspetti collegati alle componentistiche hardware e di connettività, fino ad approfondire le metodologie e i dettagli collegati all'apparato di progettazione dei sistemi. Infine verrà discussa la parte applicativa ponendo l'enfasi su alcuni casi di studio correlati a Internet of Things, il quale è per molti aspetti profondamente connesso a Ubiquitous Computing.
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Stajano, Francesco Mario. "Security for ubiquitous computing." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621022.
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Henry, James Arthur Goodwin. "Subiquitous: Supporting Ubiquitous Computing." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/33009.
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Ubiquitous computing describes a world in which technology invisibly assist us in our everyday activities. Unfortunately, development of ubiquitous software has fallen behind advances in available hardware and high-speed networking. Subiquitous is a software platform to support the development and deployment of applications in a ubiquitous computing environment. The goal of Subiquitous is to provide flexible support for a variety of ubiquitous application structures and distributions as well as to support the rapid development and zero configuration, user friendly set-up of those applications.
The Subiquitous system consists of two basic parts. First, it provides a client-server architecture to support the deployment and communication of Subiquitous applications. Second, it provides an application framework used to build Subiquitous applications. The framework, in collaboration with the Subiquitous server and client, provides service discovery, transparent and flexible communications, code distribution, and application organization.
To demonstrate Subiquitous contributions toward the improvement of ubiquitous software, a number of example ubiquitous applications were developed. The examples demonstrate: a) distribution of Subiquitous applications to different devices along the Model-View-Controller separation, b) running of the same application in multiple devices supporting easy communication between devices, c) a resource-server with multiple clients all sharing data from a single location, and d) an existing complex application with a Subiquitous wrapper that supports moving user interaction from one device to another. Each example application requires zero user configuration and includes no more than thirty lines of Subiquitous code to support user interaction across multiple devices in the home.Master of Science
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Fahrmair, Michael Robert. "Kalibrierbare Kontextadaption für ubiquitous computing." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974416428.
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Beresford, Alastair Richard. "Location privacy in ubiquitous computing." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616222.
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Baptista, Carlos Alberto Pinheiro. "Chemical approaches to ubiquitous computing." Doctoral thesis, Faculdade de Ciências e Tecnologia, 2010. http://hdl.handle.net/10362/9683.
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Jetter, Stefanie. "Ubiquitous Computing allgegenwärtige mobile Kommunikation /." [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11759328.
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Matuštík, Ondřej. "Ubiquitous computing se zaměřením na bankovnictví a pojišťovnictví." Doctoral thesis, Vysoká škola ekonomická v Praze, 2007. http://www.nusl.cz/ntk/nusl-71679.
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This dissertation thesis is focused on the issue of further extension of computers into the human life and its stronger influencing of human being, in the foreign literature defined as ubiquitous computing, everyware or pervasive computing. The basic goals of the thesis are follows: - Compare different views on this issues and make their assessment - Analyze possible effect, especially for banking and insurance area - Propose some specific innovation in named areas The results of this thesis should: - Serve as a basis for further studies in the ubiquitous computing area - Be usable as a basis for further scientific research - Bring some practical application, with which can we met in practice in future years Whole work place emphasis on the innovation process, with which is topic very closely linked and which is constantly emphasizing both in technical as in commercial spheres. The goals of the thesis are fulfilled in the individual chapters in the following way: - Definition of the goals and introduction of the topic -- Chapter 1 - Analysis of current status of knowledge -- Chapter 2 - Brief characteristic of main UC concepts -- Chapter 3 - Practical experience and innovation from UC -- Chapter 4 - Final evaluation -- Chapter 5 The scientific benefits of this work have been awarded by presentation of main parts of the thesis on international conferences and publication in the scientific magazines.
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Samulowitz, Michael. "Kontextadaptive Dienstnutzung in Ubiquitous Computing Umgebungen." Diss., lmu, 2002. http://nbn-resolving.de/urn:nbn:de:bvb:19-5918.
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Blackstock, Michael Anthony. "A common model for ubiquitous computing." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2478.
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Ubiquitous computing (ubicomp) is a compelling vision for how people will interact with multiple computer systems in the course of their daily lives. To date, practitioners have created a variety of infrastructures, middleware and toolkits to provide the flexibility, ease of programming and the necessary coordination of distributed software and hardware components in physical spaces.
However, to-date no one approach has been adopted as a default or de-facto standard. Consequently the field risks losing momentum as fragmentation occurs. In particular, the goal of ubiquitous deployments may stall as groups deploy and trial incompatible point solutions in specific locations. In their
defense, researchers in the field argue that it is too early to standardize and that room is needed to explore specialized domain-specific solutions.
In the absence of an agreed upon set of standards, we argue that the community must consider a methodology that allows systems to evolve and specialize, while at the same time allowing the development of portable applications and integrated deployments that work between between sites.
To address this we studied the programming models of many commercial and research ubicomp systems. Through this survey we gained an understanding of the shared abstractions required in a core programming model suitable for both application portability and systems integration.
Based on this study we designed an extensible core model called the Ubicomp
Common Model (UCM) to describe a representative sample of ubiquitous systems
to date. The UCM is instantiated in a flexible and extensible platform called the Ubicomp Integration Framework (UIF) to
adapt ubicomp systems to this model.
Through application development and integration experience with a composite
campus environment, we provide strong evidence that this model is adequate for
application development and that the complexity of developing adapters to several
representative systems is not onerous. The performance overhead introduced by
introducing the centralized UIF between applications and an integrated system is
reasonable. Through careful analysis and the use of well understood approaches
to integration, this thesis demonstrates the value of our methodology that directly leverages the significant contributions of past research in our quest for ubicomp application and systems interoperability.
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Gonzalez, Duque Oscar Fredy. "Behaviour enforcement in ubiquitous computing environments." Thesis, University of Surrey, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.510582.
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Ely, Philip. "The domestication of home ubiquitous computing." Thesis, University of Surrey, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555949.
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Thesis Summary This thesis' primary concern is that of human interaction with entertainment, information and communication technology in the home. Its aim is to explore the situated realities of living with so-called ubiquitous computing technology through the study of an equivalent form of technology - entertainment, information and communication technologies. The thesis explores what entertainment, information and communication technologies are found in the home, how they get there and how they are incorporated into everyday life. The thesis takes an historical and theoretical look at the emergence of the ubiquitous computing paradigm and the growing interest in designing entertainment, information and communication technologies for the home. Through an in-depth qualitative study of five households in the UK conducted during a period of significant life-change, the thesis explores the ad-hoc nature of contemporary home ubiquitous computing environments. Using the conceptual framework of domestication theory as its starting point, the study analyzes the moral, economic, social, material and practical dimensions to owning, using and maintaining an ad-hoc entertainment, information and communication environment using specific empirical examples drawn from ethnographic data. Such an account of technology in the home provides for a necessary and contemporary view of living with ubicomp in the 21 st Century in the UK, a perspective that reveals just how involving (practically, financially and emotionally) living with technologies can actually be. As consumer interest in computing devices for gaming, communicating and information- gathering grows, ubiquitous computing visions articulated in research labs have been slow to understand the generative nature of home technology environments. The thesis provides not only empirical insights that have implications for the design of new ubiquitous computing devices and infrastructures for the home but also argues that a sociological study of the everyday realities of living with technology can provide the . field of ubiquitous computing research with the heuristic tools by which it can understand the everyday 'messiness' of technology appropriation, incorporation and use.
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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.
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Chalmers, Dan. "Contextual mediation to support ubiquitous computing." Thesis, Imperial College London, 2002. http://sro.sussex.ac.uk/26306/.
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The circumstances affecting the use of devices may be termed the context of use. This includes location, social situations, tasks and the characteristics of the device itself. The ubiquitous computing vision predicts that the context of use of computing devices will become much wider and more variable than today. A default presentation of data may not always be ideally suited to the context of its use. The users expectations and experience of data presented will vary widely with context. In more restrictive situations the volume of data which may be available is likely to overwhelm the network, display capability, or user. Where the data can be transformed, or presented in part, then there may be a mediation process to find the best presentation for the context of use. In order to manage this contextual mediation in an automatic and acceptable manner a process which is sensitive to the effects on the user is required. This thesis examines the description of context and data and uses this to enable a general specification to direct contextual mediation. Structured data is described in terms of its semantic content and attributes of alternative representations of semantic elements. Description of context as both states, such as speed and the user's activity; and consumable resources, including network bandwidth and screen space, are presented. Context is used to enable specifications which reflect needs and limitations due to context in a rich and highly flexible manner. Preferences are considered for both semantic and syntactic properties of data. In pursuit of this general solution, we have developed a test-bed application related to the use of map data. Map data is an interesting exemplar as location-correlated data are clearly useful within a ubiquitous computing scenario; and vector map data offers a level of structure which is now emerging in many other classes of data. Results are presented showing that our techniques can indeed both describe and enable operation within a range of contextual constraints. In order to support our claim for generality, a case study of the techniques application to web data is also presented.
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Costa, Cláudia Brito da. "Printed electronics for ubiquitous computing applications." Doctoral thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/9317.
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Dissertação para obtenção do Grau de Doutor em
QuímicaThis Ph.D. project is focused on the synthesis of functional inorganic materials, their formulation into inks and their deposition using inkjet printing on non-conventional substrates, such as paper, with the ultimate goal of advancing the state-of-the-art in the area of printed electrochromic displays. Other materials, inks,techniques and substrates were also explored. The first step in building a printed electrochromic display is to synthesize the functional materials necessary for the different layers of the device; this part of the work focused on inorganic electrochromic materials (tungsten oxide and vanadium oxide) and on transparent conductive oxides (TCO). ATO(antimony tin oxide) was synthesized using the Pechini method and the results obtained were promising. Tungsten oxide and vanadium oxide nanoparticles were also synthesized via a sol-gel route. FTIR,Raman and X-ray diffraction spectroscopic measurements showed that tungsten oxide nanoparticles synthesized via sol-gel are mainly in an amorphous state, with hexagonal crystalline domains, and allowed the analysis of the hydration extent of those nanoparticles. Vanadium oxide gel synthesized in this work is similar to those previously described in the literature, consisting of V2O5.6H2O, with microstructures similar to orthorhombic V2O5, while Raman spectroscopy also showed the presence of amorphous domains. The nanoparticle sizes were measured combining Dynamic Light Scattering, sedimentation and microscopic techniques (AFM and TEM). Tungsten oxide particles presented an average nanoparticle size between 160 and 200 nm, and vanadium oxide of 60 nm. The nanoparticles were used to produce ink formulations for application in inkjet printing. In addition to tungsten oxide and vanadium oxide, other electrochromic materials were printed. This part of the work examined the possibility of inkjet printing several organic (poly(thiophene)s) and inorganic electrochromic materials (metal oxides and metal hexacyanometallates) and also evaluated the performance of the resulting electrochromic devices. Poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate), poly(3-hexylthiophene), tungsten oxide, vanadium oxide and Prussian blue were inkjet printed on flexible substrates, such as plastic and paper. Solid-state electrochromic devices were assembled at room temperature on plastic and on paper substrates, without sintering the printed films, showing, in some cases, excellent contrast between the on and off state. The tungsten oxide and vanadium oxide devices were then tested through spectroelectrochemistry by Visible/NIR absorption spectroscopy. Tungsten oxide showed a dual spectroscopic response depending on the applied voltage and vanadium oxide presented several redox steps, which give rise to a variety of color transitions, also as a function of the applied voltage. Color space analysis was used to characterize the electrochromic transitions; monitorization of the color contrast and cycling tests, as well as techniques such as cyclic voltammetry, were also used to characterize device performance.
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Tandler, Peter. "Synchronous Collaboration in Ubiquitous Computing Environments." Phd thesis, [S.l. : s.n.], 2004. http://tuprints.ulb.tu-darmstadt.de/506/1/Tandler-Thesis-BEACH.pdf.
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Ubiquitous computing environments offer a wide range of devices in many different shapes and sizes, creating new possibilities for interaction. In the context of meetings and teamwork situations, it is desirable to take advantage of their different properties for synchronous collaboration. Besides providing an adapted user interface, this requires the software to be designed for synchronous access to shared information using heterogeneous devices with different interaction characteristics. The handling of these requirements poses challenges for software developers. As this field is still emerging and no mature models, tools, and standards are at hand, developers have to create their own solutions from scratch. The goal of this thesis is to provide guidance and support for developers of synchronous groupware applications for ubiquitous computing environments. They have to be enabled to develop applications more efficiently and with the flexibility and extensibility that is required for ubiquitous computing. The development effort can be reduced effectively if support for developers is provided at several levels. Developers need assistance when creating models of the applications to be developed, when choosing an appropriate architecture, when creating the design, and finally when implementing. This implies that an architecture-driven, model-based development approach should be followed. While the implementation of a single synchronous UbiComp application still requires research, the development of appropriate development support is even more challenging. Common properties of ubiquitous computing applications have to be identified. Future developments and extensions have to be predicted. Requirements of different research areas have to be fulfilled. Addressing these aspects, the goal of this dissertation is accomplished by providing extensions to the state of the art at four levels: A conceptual model of synchronous UbiComp applications defines a high-level structure for applications that ensures reusability and extensibility of developed software components. It identifies separation of concerns, degree of coupling and sharing, and level of abstraction as the three main design dimensions of these applications. The conceptual model provides two key contributions to the state of the art. First, it proposes the strict separation of user interface and interaction concerns orthogonal to the level of abstraction that is not found in current HCI models. This is a crucial extension of HCI models that is required in the context of ubiquitous computing. Second, it introduces a new view on the concept of sharing. By applying the CSCW concept of sharing in the context of ubiquitous computing, sharing user interface, interaction, and environment state becomes relevant. Thereby, the concept of sharing as known from CSCW can be extended to function as a guiding principle for UbiComp application design. This novel design approach helps ensuring the extensibility and flexibility that is required in ubiquitous computing. A flexible software architecture identifies essential abstractions that support the development of synchronous applications in “roomware” environments. Roomware refers to the integration of room elements with information technology, such as interactive tables, walls, or chairs. Roomware environments represent one form of ubiquitous computing environment. They are used in this thesis as an application context for the conceptual model. The software architecture refines the conceptual model to meet the needs of roomware environments. An object-oriented application framework that has been designed and implemented provides a reusable design and reusable software components. Furthermore, extensibility is supported by explicit mechanisms that are provided to allow adaptability for variable aspects of applications. Thus, the application framework helps developers with the design and implementation. To show how model, architecture, and framework can be applied, the design of sample roomware applications is explained. To demonstrate the extensibility, several new forms of interaction that are required for roomware environments are implemented. The developed applications and interaction forms are used in i-LAND, the roomware environment at Fraunhofer IPSI. Besides being a contribution on their own, the developed applications and new forms of interaction provide evidence that the conceptual model effectively supports developers in meeting the requirements of roomware environments. They show that the model helps reduce the implementation effort when accompanied by appropriate software development tools such as the application framework. The conceptual model, software architecture, and application framework presented in this thesis relieve software developers from the burden of handling all details of multiple interaction forms, and of many critical issues when dealing with synchronous collaboration. By these means, the developer can concentrate on the task at hand designing software at an appropriately high abstraction level, and thus create applications with a higher quality that are flexibly extensible.
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Keil, Reinhard. "Unterstützung zustandsbehafteter Dienste im Ubiquitous Computing." [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11051853.
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Sauter, Caroline. "Dynamische Dienstkomposition in Ubiquitous-computing-Umgebungen." München Verl. Dr. Hut, 2007. http://d-nb.info/987775650/04.
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Song, Xiang. "Seamless mobility in ubiquitous computing environments." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24671.
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Thesis (Ph.D.)--Computing, Georgia Institute of Technology, 2009.Committee Chair: Ramachandran, Umakishore; Committee Member: Ahamad, Mustaque; Committee Member: Edwards, Keith; Committee Member: Liu, Ling; Committee Member: Suh, Sang-bum
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Baloch, Raheel Ali. "Context dependency analysis in ubiquitous computing." Phd thesis, Institut National des Télécommunications, 2012. http://tel.archives-ouvertes.fr/tel-00714129.
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To provide users with personalized adaptive services only using the accessible computing resources in a cloud environment, context aware applications need to assimilate both the accessed and derived context, i.e. a combination of more than one sensed data and information in the environment. Context data dependency, dependency that arises between the context data producer and consumer, may get introduced in a system due to numerous reasons. But as the number of context dependencies for a service increases, the more complex the system becomes to manage. The thesis addresses issues of how to identify context dependencies, represent such context dependencies and then reduce them in a system. In the first part of the thesis, we present two efficient approaches to determine context dependency relations among various services in ubiquitous computing environment to help better analyse the pervasive services. One approach is based on graph theory, and we have used the topological sort to determine the context dependencies. The second approach is based on solving constraint networks which determines whether an entity is affected when the state of a certain other entity has its state changed, i.e. determining the dynamic nature of context dependency. In the second part of the thesis, we present a mode for representation of context dependencies within a system. Our model that represents context dependencies is based on set theory and first-order predicate logic. The context dependency representation model also represents alternative sources for context acquisition that can be utilized in a case in which the preferred context producers are not available to service the desired context to the relevant context consumer any more. Further, we try to reduce the context dependencies by presenting the idea of profile context, which is based on the proposal of an open framework for context acquisition, management and distribution. This heuristic approach is based on the idea of utilizing mobile nodes in an ad hoc overlay network with more resources than the context producer itself to store various contextual information under the banner of profile context, and further, provide profile context instead of each context individually based on the queries the nodes receive from the context consumers. Bringing together the context information and context updates from various sources, support for context aware decisions can be implemented efficiently in a mobile environment by addressing the issues of context dependency using profile context
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Baloch, Raheel Ali. "Context dependency analysis in ubiquitous computing." Electronic Thesis or Diss., Evry, Institut national des télécommunications, 2012. http://www.theses.fr/2012TELE0004.
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Pour fournir aux utilisateurs des services personnalisés d'adaptation en utilisant uniquement les ressources informatiques accessibles dans un environnement de cloud computing, les applications contexte, conscients besoin d'assimiler à la fois le contexte accessible et dérivés, c'est à dire une combinaison de plus d'un senti données et d'informations dans l'environnement. Contexte des données de dépendance, la dépendance qui se pose entre le contexte des données du producteur et du consommateur, peut se présenter dans un système en raison de nombreuses raisons. Mais comme le nombre de dépendances de contexte pour une augmentation des services, la plus complexe, le système devient à gérer. La thèse aborde les questions de la façon d'identifier les dépendances de contexte, représentent des dépendances de contexte tels, puis les réduire dans un système. Dans la première partie de la thèse, nous présentons deux approches efficaces pour déterminer les relations de dépendance entre les différents services du contexte dans l'environnement informatique ubiquitaire pour aider à mieux analyser les services omniprésents. Une approche est basée sur la théorie des graphes, et nous avons utilisé le tri topologique pour déterminer les dépendances de contexte. La deuxième approche est basée sur la résolution des réseaux de contraintes qui détermine si une entité est affectée lorsque l'état d'une certaine entité autre a changé son état, c.-à-détermination de la nature dynamique de la dépendance contexte. Dans la deuxième partie de la thèse, nous présentons un mode de représentation des dépendances de contexte au sein d'un système. Notre modèle qui représente les dépendances de contexte est basé sur la théorie des ensembles et la logique des prédicats du premier ordre. Le modèle de représentation contexte de dépendance représente également d'autres sources pour l'acquisition de contexte qui peuvent être utilisés dans une affaire dans laquelle les producteurs contexte privilégiées ne sont pas disponibles pour desservir le contexte souhaité pour le consommateur un contexte pertinent, pas plus. En outre, nous essayons de réduire les dépendances de contexte en présentant l'idée du contexte de profil, qui est basé sur la proposition d'un cadre ouvert pour l'acquisition de contexte, la gestion et la distribution. Cette approche heuristique est basée sur l'idée d'utiliser les nœuds mobiles dans un réseau ad hoc avec superposition de plus de ressources que le producteur lui-même contexte pour stocker diverses informations contextuelles sous la bannière du contexte profil, et en outre, fournir le contexte profil au lieu de chaque contexte individuellement sur la base sur les requêtes des nœuds reçoivent des consommateurs contexte. Réunissant les informations de contexte et de mises à jour de contexte à partir de diverses sources, le soutien aux décisions contexte, conscients peut être mis en œuvre efficacement dans un environnement mobile en s'attaquant aux problèmes de dépendance en utilisant le contexte contexte profilTo provide users with personalized adaptive services only using the accessible computing resources in a cloud environment, context aware applications need to assimilate both the accessed and derived context, i.e. a combination of more than one sensed data and information in the environment. Context data dependency, dependency that arises between the context data producer and consumer, may get introduced in a system due to numerous reasons. But as the number of context dependencies for a service increases, the more complex the system becomes to manage. The thesis addresses issues of how to identify context dependencies, represent such context dependencies and then reduce them in a system. In the first part of the thesis, we present two efficient approaches to determine context dependency relations among various services in ubiquitous computing environment to help better analyse the pervasive services. One approach is based on graph theory, and we have used the topological sort to determine the context dependencies. The second approach is based on solving constraint networks which determines whether an entity is affected when the state of a certain other entity has its state changed, i.e. determining the dynamic nature of context dependency. In the second part of the thesis, we present a mode for representation of context dependencies within a system. Our model that represents context dependencies is based on set theory and first-order predicate logic. The context dependency representation model also represents alternative sources for context acquisition that can be utilized in a case in which the preferred context producers are not available to service the desired context to the relevant context consumer any more. Further, we try to reduce the context dependencies by presenting the idea of profile context, which is based on the proposal of an open framework for context acquisition, management and distribution. This heuristic approach is based on the idea of utilizing mobile nodes in an ad hoc overlay network with more resources than the context producer itself to store various contextual information under the banner of profile context, and further, provide profile context instead of each context individually based on the queries the nodes receive from the context consumers. Bringing together the context information and context updates from various sources, support for context aware decisions can be implemented efficiently in a mobile environment by addressing the issues of context dependency using profile context
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Bohn, Jürgen. "User-centric dependability concepts for ubiquitous computing /." Berlin : dissertation.de, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=2927811&prov=M&dok_var=1&dok_ext=htm.
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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.
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Kilian-Kehr, Roger. "Mobile security with smartcards." Phd thesis, [S.l.] : [s.n.], 2002. http://elib.tu-darmstadt.de/diss/000214.
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Pérez-Martínez, Pablo Alejandro. "Contributions to privacy protection for ubiquitous computing." Doctoral thesis, Universitat Rovira i Virgili, 2015. http://hdl.handle.net/10803/334398.
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El desenvolupament de noves tecnologies ha introduït el concepte de Computació Ubiqua, a on els objectes que ens envolten poden tenir processadors integrats i establir la comunicació amb altres sistemes, amb la finalitat d'oferir serveis personalitzats per ajudar-nos amb les nostres tasques habituals.
No obstant això, a causa de que és possible tenir ordinadors en gairebé qualsevol lloc o objecte, això ha obert noves discussions sobre temes tals com la privadesa i la seguretat, considerats des de diferents punts de vista, com el desenvolupaments jurídics, socials, econòmics i tecnològics, amb una importància cada vegada major al món actual.
En aquesta tesi discutim i analitzem algunes de les principals qüestions de seguretat i privadesa a les tecnologies actuals, tals com a telèfons intel·ligents, dispositius RFID o ciutats intel·ligents, i proposem alguns protocols per fer front a aquests temes garantint la privadesa dels usuaris a tot moment.El desarrollo de nuevas tecnologías ha introducido el concepto de Computación Ubicua , en donde los objetos que nos rodean pueden tener procesadores integrados y establecer la comunicación con otros sistemas, con el fin de ofrecer servicios personalizados para ayudarnos con nuestras tareas habituales. Sin embargo, debido a que es posible tener ordenadores en casi cualquier lugar u objeto, esto ha abierto nuevas discusiones sobre temas tales como la privacidad y la seguridad, considerado desde diferentes puntos de vista, como el desarrollos jurídicos, sociales, económicos y tecnológicos, con una importancia cada vez mayor en el mundo actual. En esta tesis discutimos y analizamos algunas de las principales cuestiones de seguridad y privacidad en las tecnologías actuales, tales como teléfonos inteligentes, dispositivos RFID o ciudades inteligentes, y proponemos algunos protocolos para hacer frente a estos temas garantizando la privacidad de los usuarios en todo momento.
The development of new technologies has introduced the concept of Ubiquitous Computing, whereby the objects around us can have an embedded computer and establish communications with each other, in order to provide personalized services to assist with our tasks. However, because it is possible to have computers almost anywhere and within any object, this has opened up new discussions on issues such as privacy and security, considered from many different views, such as the legal, social, economic and technological development perspectives, all taking an increasingly significant importance in today’s world. In this dissertation we discuss and analyze some of the main privacy and security issues in current technologies, such as smartphones, RFIDs or smart cities, and we propose some protocols in order to face these issues guarantying users' privacy anytime.
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Moschgath, Marie-Luise. "Kontextabhängige Zugriffskontrolle für Anwendungen im ubiquitous computing." [S.l. : s.n.], 2002. http://elib.tu-darmstadt.de/diss/000333.
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河口, 信夫, and 佑也 根岸. "Instant Learning Sound Sensor for Ubiquitous Computing." 日本ソフトウェア科学会ソフトウェアシステム研究会, 2007. http://hdl.handle.net/2237/15380.
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Hayat, Mohammed Zia. "Information Security Risk Management for Ubiquitous Computing." Thesis, University of Southampton, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484894.
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The potential for rapid and diverse interconnectivity between devices utilising heterogeneous communications interfaces has enabled a truly ubiquitous computing environment. However this has resulted in equally ubiquitous security risks due principally to . the number and complexity of services being run over such networks. As technology advances towards the realisation of a ubiquitous computing environment, what impact does this have on the need to preserve the key information security requirements of: confidentiality: integrity and availability? And how does this influence, future information security solutions, particularly in light of 'always-on' business processes which require real-time information sharing? This thesis describes research conducted into answering these questions from a risk management perspective, using key industrial projects as case studies.
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Bohn, Jürgen. "User-centric dependability concepts for ubiquitous computing." Berlin dissertation.de, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2927811&prov=M&dok_var=1&dok_ext=htm.
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Pinkerton, Michael David. "Ubiquitous computing : extending access to mobile data." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/8242.
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Aitenbichler, Erwin [Verfasser]. "System Support for Ubiquitous Computing / Erwin Aitenbichler." Aachen : Shaker, 2006. http://d-nb.info/1170538185/34.
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Perez, Javier Andreu. "Evolving intelligent systems for ubiquitous computing technologies." Thesis, Lancaster University, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.660113.
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Ubiquitous Computing (UC) is a new paradigm of research aiming at creating new autonomous systems that involve humans in practical real-life situations and applications. Human behaviour follows a stochastic process and raises a high level of uncertainty. In this context, Evolving Intelligent Systems (EIS) form a new machine learning · concept for developing adaptive algorithms that work on-line and are therefore reliable in real -time applications, with a very low complexity. Their adaptation properties make this type of algorithms very suitable to address the problems of stochastic behaviours and high uncertainty. In this thesis, the theory behind EIS is explained in detail, including fuzzy rule-based inference and densitybased models. In addition, key contributions that ease their application to UC systems are highlighted. Two types of evolving classifiers, eClassO and eClassl, are proposed as well as their simplified version called Simpl_eClass. Feature processing and novel dimensionally reduction methods are proposed when necessary. The purpose is this way to address the design and computational challenges of four key subfields of UC, namely Human Activity Recognition, Mobile Computing, Scene Recognition and Ubiquitous Robots. The first entails the recognition of human activities by using pervasive wearable sensors. The second implies the implementation of the proposed algorithm in a mobile platform to detect novelties inside a video sequence and recover pictorial memories. The third consists in an image processing experiment for classifying entire images into categorical classes. Finally, the fourth introduces the development of an autonomous robotic leader-follower platform. The model settings for each experiment are detailed. Successful performance values and pattern recognition rates were achieved for the different challenges addressed. For example, classification rates ranged between 71% and 80% in the online human activity recognition case, 80% for the scene categorization problem, and 98% for the leader status recognition. Unsupervised recognition of novelties was also successfully evaluated through a user validation test. The experiments showed in all cases very good times of response and resource awareness. It is concluded that the use of EIS with on-line computation and fuzzy logic inference offers valuable assets to be exploited in future UC developments.
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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.
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Dissertação para obtenção do Grau de Mestre em
Engenharia InformáticaWe 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.
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Lam, Tiago Miguel Gameiro. "Machine-to-Machine (M2M) in ubiquitous computing." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12710.
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Mestrado em Engenharia de Computadores e TelemáticaAlthough the area of Machine-to-Machine communications and, consequently, the Internet of Things, have undergone a great improvement regarding interoperability, there is still no ’de facto’ solution proposal to achieve large scale, even global, interoperability. As a first step, this work provides a theoretical analysis of proposals relevant to the area, mainly analysing how they achieve some essential requirements for the Internet of Things, such as scalability, heterogeneity and management. Later, focusing in ETSI’s M2M standard, is first given a high-level description of its vision, approach and architecture, and then, finally, from a more practical point of view, is also presented and tested a functional implementation of an ETSI M2M compliant gateway, which provides an empirical evaluation of the standard.
Apesar de a área das comunicações Máquina-a-Máquina e, consequentemente, a Internet das Coisas, terem sofrido uma grande melhoria relativamente à interoperabilidade, ainda não existe nenhuma solução considerada "dominante" que permita atingir uma interoperabilidade em larga escala, até mesmo global. Desta forma, numa primeira instância este trabalho visa fornecer uma análise teórica de propostas relevantes para a área, onde se analisa maioritariamente como é que essas propostas atingem alguns requisitos essenciais para a Internet das Coisas, como a escalabilidade, heterogeneidade e gestão. Posteriormente, focando-se no standard ETSI M2M, é dado em primeiro lugar uma descrição de alto nível da sua visão, abordagem e arquitectura, e depois, finalmente, de um ponto de vista prático, é ainda apresentada e testada uma implementação funcional de uma gateway condescendente com o standard, o que fornece uma avaliação mais empírica do mesmo.
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Hartin, Phillip J. "Improving healthcare intervention outcomes via ubiquitous computing." Thesis, Ulster University, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.700827.
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The potential impact of smart phones in the improvement of personal health outcomes is staggering. Found everywhere, in the pockets of billions around the world, truly ubiquitous, a mobile portal to all of mankind's information ... yet the current health model has not adapted adequately to facilitate their arrival, and perhaps rightly so. There are an unprecedented number of health apps available to the public, for which the benefit of adopting, and their true efficacy, is yet to be established. This work focuses on addressing this issue, exploring the perceived barriers and keys to adoption, proposing a number of solutions which utilise and extend the knowledge in the areas of context-aware computing and behaviour change, and evaluates their efficacy in two longitudinal, smartphone facilitated, health interventions, both in the areas of dementia treatment and prevention.
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Warshawsky, James Emory. "Umbilical Cord: A system for ubiquitous computing." CSUSB ScholarWorks, 2004. https://scholarworks.lib.csusb.edu/etd-project/2518.
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Ubiquitous computing aims to make computing widely available, easy to use, and completely transparent to the user. Umbilical Cord is intended to be the first step in researching ubiquitous computing at CSUSB. It implements a model scalable network with a client-server architecture that features consistent user interaction and global access to user data. It is based on the Linux operating system which can be leveraged for future research due to the open nature of its source code. It also features a scalable network swap.
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Liu, Huanjin. "Free roaming: A system for ubiquitous computing." CSUSB ScholarWorks, 2006. https://scholarworks.lib.csusb.edu/etd-project/3062.
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Based on the Umbilical Cord system, this project enriches the Ubiquitous Computing system with a Free Roaming system. This Free Roaming consists of a distributed authentication system, a data caching system and a communication system between them. It allows user to roam within this system and access his data everywhere. Together with the Umbilical Cord system, a Ubiquitous Computing system is functionally completed as a prototype, and is ready to be deployed into the Internet.
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Rügge, Ingrid Herzog Otthein. "Mobile solutions : Einsatzpotenziale, Nutzungsprobleme und Lösungsansätze /." Wiesbaden : Dt. Univ.-Verl, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016228009&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Heckmann, Dominikus. "Ubiquitous user modeling." Berlin Aka, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?id=2860787&prov=M&dok_var=1&dok_ext=htm.
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Bång, Magnus. "Computing at the speed of paper : ubiquitous computing environments for healthcare professionals /." Linköping : Univ, 2004. http://www.bibl.liu.se/liupubl/disp/disp2004/tek883s.pdf.
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Ransom, Stefan. "Managing security and dependability in ubiquitous computing environments." Lübeck Zentrale Hochschulbibliothek Lübeck, 2010. http://d-nb.info/1002133211/34.
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Liu, 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.
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Thesis (Ph.D.)--Indiana University, Dept. of Computer Sciences, 2009.Title from PDF t.p. (viewed on Jul 22, 2010). Source: Dissertation Abstracts International, Volume: 70-12, Section: B, page: 7673. Adviser: Kay Connelly.
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Drăgoi, Octavian Andrei. "The continuum architecture : towards enabling chaotic ubiquitous computing." Waterloo, Ont. : University of Waterloo, 2004. http://etd.uwaterloo.ca/etd/oadragoi2005.pdf.
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Thesis (Ph.D.)--University of Waterloo, 2004."A thesis presented to the University of Waterloo in fulfilment of the thesis requirement for the degree of Doctor of Philosophy in Computer Science". Includes bibliographical references.
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Zampieron, Jeffrey Michael Domenic. "Self-localization in ubiquitous computing using sensor fusion /." Online version of thesis, 2006. https://ritdml.rit.edu/dspace/handle/1850/2801.
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Jacobsen, Kristoffer. "Organizing Mobile Work Processes in Ubiquitous Computing Environments." 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-9262.
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This thesis explores the domain of ubiquitous computing and relates situations of mobile work to Virtual Organizations (VOs). Motivated by the work performed by the MOWAHS project, this thesis aims to contribute in understanding virtual organizations, and in continuously assessing and improving the work processes within these. Emerging technologies enable improved sensing of users, actions, wishes and requirements which can be utilized for facilitating situated activities in dynamic organizations. Taking an organizational approach to the subject we aim to describe new ways of coordinating actors automatically in these environments based on context information from the surroundings. Through analysis of simple mobile work scenarios, we can extract knowledge of how different situations of mobile work demand coordination. This is used as method for identifying the importance of work process information in monitoring coordination. We provide an architecture proposition for a coordination module and suggestions to how context information of the work processes could be acquired and represented as knowledge to the organization.
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Dragoi, Octavian Andrei. "The Continuum Architecture: Towards Enabling Chaotic Ubiquitous Computing." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/1158.
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Interactions in the style of the ubiquitous computing paradigm are possible today, but only in handcrafted environments within one administrative and technological realm. This thesis describes an architecture (called Continuum), a design that realises the architecture, and a proof-of-concept implementation that brings ubiquitous computing to chaotic environments. Essentially, Continuum enables an ecology at the edge of the network, between users, competing service providers from overlapping administrative domains, competing internet service providers, content providers, and software developers that want to add value to the user experience. Continuum makes the ubiquitous computing functionality orthogonal to other application logic. Existing web applications are augmented for ubiquitous computing with functionality that is dynamically compiled and injected by a middleware proxy into the web pages requested by a web browser at the user?s mobile device. This enables adaptability to environment variability, manageability without user involvement, and expansibility without changes to the mobile. The middleware manipulates self-contained software units with precise functionality (called frames), which help the user interact with contextual services in conjunction with the data to which they are attached. The middleware and frame design explicitly incorporates the possibility of discrepancies between the assumptions of ubiquitous-computing software developers and field realities: multiple administrative domains, unavailable service, unavailable software, and missing contextual information. A framework for discovery and authorisation addresses the chaos inherent to the paradigm through the notion of role assertions acquired dynamically by the user. Each assertion represents service access credentials and contains bootstrapping points for service discovery on behalf of the holding user. A proof-of-concept prototype validates the design, and implements several frames that demonstrate general functionality, including driving discovery queries over multiple service discovery protocols and making equivalences between service types, across discovery protocols.
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Wang, Kaining. "Context-based coalition access control for ubiquitous computing." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27193.
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The need for coalition access control among individuals and organizations has increased significantly in the past years as the need for spontaneous access to information increases. However, a significant deterrent to the ability to connect in a spontaneous manner in coalition collaborative applications is the difficulty in users from different domains being able to access resources or services located and owned by other entities. Coalition access control encompasses control mechanisms dealing with access between users of two or more different organizations or enterprises. These users could be co-located or remotely located.
The thesis first presents a delegation based D-TMAC model that extends traditional TMAC across organizations for formal coalition environments, and a context-based coalition access control model, which apply context information as conditions on delegation. Then the thesis proposes a Session-based Coalition Access Control Architecture (SCACA) and provides practical implementation that enables dynamic coalition access control over a communication session in a spontaneous manner. The presented system architecture and methodology leverages the IETF SIP protocol as an underlying communication mechanism in order to greatly minimize the administration overhead and rapidly adapt the dynamic nature of access control in spontaneous coalition environments.
The result is that, during a spontaneous coalition communication across organizations, every endpoint can access other endpoints' resources and share its own resources to all the other endpoints as well. Moreover, these privileges will dynamically change as the status of the coalition communication changes.
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Liljedahl, Anders. "Evaluation of Multi-Agent Platforms for Ubiquitous Computing." Thesis, Blekinge Tekniska Högskola, Avdelningen för programvarusystem, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4540.
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Ubiquitous Computing can be described as the third stage in the computing history where every user is surrounded by many “computers”. This paper provides an evaluation of a number of multi-agent platforms to decide their appropriateness as an infrastructure for ubiquitous computing.Ubiquitous Computing kan beskrivas som det 3:e steget i datorns utveckling där varje användare omges med många "datorer". Denna uppsats tillhandahåller en utvärdering av multi-agent platformar för att undersöka deras lämplighet inom Ubiquitous Computing
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Bossard, Daniel. "Ubiquitous computing based inventory management in supply chains /." [S.l.] : [s.n.], 2004. http://www.gbv.de/dms/zbw/470796219.pdf.
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