Publications
Continuous service execution in mobile prosumer environments
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Unai Aguilera, Aitor Almeida, Pablo Orduña, Diego López-de-Ipiña, Rafael de las Heras, Actas del IV International Symposium of Ubiquitous Computing and Ambient Intelligence, UCAmI 2010, p.p. 229-238, Valencia, Spain, September 7-10, 2010 (ISBN: 978-84-92812-61-5)
The vision of Ubiquitous Computing presents special requirements in mobile prosumer environments. Users have the possibility to create and provide their own services to others. Due to mobility, resources used to provide their services change and disappear continuously causing the disruption of the execution and the consumption process. This paper proposes an architecture for mobile service prosuming which tackles the previous problems. It provides a decoupled vision of the different participants in the prosumer environment using various concepts: services, components and capabilities. These concepts enable a dynamic and continuous resolution process during prosuming and also the creation of composite services. This work presents an architecture for mobile devices which supports continuous service execution in a prosumer environment also including composite services. Components are resolved with available capabilities which are selected using restrictions performing a matching process. Due to the heterogeneity of computational resources in mobile devices, a dual approach for matching is proposed: semantic for powerful devices, and syntactic for limited ones.
A user-centric approach to adaptable mobile interfaces
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Aitor Almeida, Pablo Orduña, Eduardo Castillejo, Diego Lopez de Ipiña, Marcos Sacristan. Actas del II International Workshop of Ambient Assisted Living (IWAAL 2010), p.p. 153-160 Valencia, Spain, September 7-10, 2010 (ISBN: 978-84-92812-67-7)
The adoption of ICT assistive technologies by elderly and disable collectives has been slow and unsatisfactory. However, a bigger adoption could contribute to their independent living significantly. As the average age of the population increases in the most developed countries, this becomes an unavoidable problem. To tackle this problem, this paper devises a framework that facilitates the process of creating interfaces that adapt themselves to the specific capabilities of each user. Furthermore a Fuzzy Knowledge-Eliciting Reasoner is proposed that infers new capabilities from the existing ones. Using this reasoning engine, developers can use more natural concepts when stating the code adaptation directives.
ElderCare: An Interactive TV-based Ambient Assisted Living Platform
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Diego López-de-Ipiña, Sergio Blanco, Xabier Laiseca and Ignacio Díaz-de-Sarralde. Actas del II International Workshop of Ambient Assisted Living (IWAAL 2010), p.p. 75-82 Valencia, Spain, September 7-10, 2010 (ISBN: 978-84-92812-67-7).
This paper describes the architecture and components of an AAL-enabling platform, centred around interactive TV (iTV), which combines OSGi middleware, RFID and NFC in order to ease the day to day of dependant or semi-dependant elderly people (its main focus), their care takers and relatives. The end result is an affordable, unobtrusive, evolvable, usable and easily deployable ICT infrastructure which aims to approach the vision of “AAL for All”. This is, it seeks a more widespread adoption of AAL and a better QoS on caretaking through the combination of common hardware, OSGi dynamic service and mobile-aided care data management.
Portable personal RFID databases for AAL-enabled healthcare environments
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Ignacio Díaz-de-Sarralde, Diego López-de-Ipiña, Xabier Laiseca, Sergio Blanco. Actas del II International Workshop of Ambient Assisted Living (IWAAL 2010), p.p. 109-118 Valencia, Spain, September 7-10, 2010 (ISBN: 978-84-92812-67-7).
The use of passive HF RFID tags in healthcare environments is by no means new. However, RFID tags' user-writable data storage capability is often not used in favour of an over-the-network data access approach. Thus, RFID tags are usually relegated to mere remote data identifiers. This paper explores the potential of actually using the storage capability of an RFID tag as a portable database of the latest events in the life of a patient in an AAL-enabled environment; both from a theoretical approach, encompassing studies on the actual data storage capacity on HF RFID tags; as well as a practical one, describing our proposal for an NFC-powered platform that uses the data-on- tag paradigm to be used in environments where: a) the mentioned portable patient logs can lead to improvements on patient attention and quality of treatment; and b) a continuous data link approach is not technically or economically feasible.
Identifying Security Issues in the Semantic Web: Injection attacks in the Semantic Query Languages
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Pablo Orduña, Aitor Almeida, Unai Aguilera, Xabier Laiseca, Diego López-de-Ipiña, Aitor Gómez-Goiri. Actas de las VI Jornadas Científico-Técnicas en Servicios Web y SOA (JSWEB 2010). p. p. 43 - 50. ISBN: 978-84-92812-59-2. Valencia, Spain. September 2010.
As new challenges motivated by the Semantic Web get resolved, the need for getting protected against new types of security flaws becomes critical. In the Semantic Web the old and well-known vulnerabilities reappear with all the power of the new semantic mechanisms. This semantic mechanisms older new and dangerous possibilities to malicious users. For this reason it is important for the developers to know and prevent the vulnerabilities in their applications. In this paper we analyze the possibilities of injection attacks in the most used semantic query / update languages (SPARQL/SPARUL).
Interacting with the digital world through RFID-powered gadgets
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Leire Muguira, Jonathan Ruiz de Garibay, Juan Ignacio Vázquez, 17TH International Conference on Software, Telecommunications and Computer Networks, SoftCOM 09, IEEE Catalog number CFP0987A, ISBN 978-953-290-015-6, Split- Hvar-Korcula, Croatia, September 24 – 26, 2009
The Internet of Things is a field of the Future Internet that has a significant support from different institutions. Research has been done in this area for years and although it has progressed significantly, their goals remain the same: designing innovative Internet-connected experiences and augmenting existing objects’ capabilities with Internet-related features. The scientific community has explored new ways and concepts, such as, service generation and consumption or user interaction. In this paper we present our work on creating RFID-based smart gadgets in order to take Internet experience to the next level, merging the on-line and the tangible worlds into a single continuous space.
Architecture for WSN nodes integration in context aware systems using semantic messages
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Iker Larizgoitia, Leire Muguira, Juan Ignacio Vázquez. International Workshop on Advanced Sensor Integration Technology (ASIT09), at the First ICST International Conference on Ad Hoc Networks. 2009, Niagara Falls, Ontario, Canada.
"Wireless sensor networks (WSN) are becoming extremely popular in the development of context aware systems. Traditionally WSN have been focused on capturing data, which was later analyzed and interpreted in a server with more computational power. In this kind of scenario the problem of representing the sensor information needs to be addressed. Every node in the network might have different sensors attached; therefore their correspondent packet structures will be different. The server has to be aware of the meaning of every single structure and data in order to be able to interpret them. Multiple sensors, multiple nodes, multiple packet structures (and not following a standard format) is neither scalable nor interoperable. Context aware systems have solved this problem with the use of semantic technologies. They provide a common framework to achieve a standard definition of any domain. Nevertheless, these representations are computationally expensive, so a WSN cannot afford them. The work presented in this paper tries to bridge the gap between the sensor information and its semantic representation, by defining a simple architecture that enables the definition of this information natively in a semantic way, achieving the integration of the semantic information in the network packets. This will have several benefits, the most important being the possibility of promoting every WSN node to a real semantic information source."
An application-aware approach to efficient power management in Mobile Devices
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Ana Lago, Iker Larizgoitia. 4th International ICST Conference on Communication System Software and Middleware. July 2009, Trinity College Dublin, Ireland.
"Reducing the energy consumed by mobile wireless devices to extend the lifetime of the batteries that power them is one of the major challenges in designing such systems. While this problem can be addressed at various levels (e.g. device, operating system, middleware, application), we think that it is possible to get a higher energy saving when considering the needs of the applications (application-aware). Our approach is centred on analyzing the behaviour of the applications more than the resources. In this paper, we present an application-aware framework which utilizes the needs of the applications and Dynamic Power Management (DPM) techniques focused on the wireless network card to control and reduce power consumption at runtime. We include a novel technique that increases the energy savings. We have also developed a simple prototype to test the viability of our idea. The experimental results show that the proposed approach achieves between 10% - 40% average reduction in the energy consumed by the wireless network interface. "
RFIDGlove: a Wearable RFID Reader
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Muguira Urtubi, Leire; Vázquez Gómez, Juan Ignacio, Arruti Bustos, Asier, Ruiz de Garibay Pascual, Jonathan. IEEE International Workshop on Advances in RFID (AiR 2009), at IEEE International Conference on e-Business Engineering (ICEBE 2009). IEEE Computer Society Order Number P3842, ISBN 978-0-7695-3842-6. Macau, China.
There are different experiences in the use of RFID technology for warehouse inventories. However, there is future work to do on the design of advanced reading devices, applying wearable computation techniques and wireless communications. The aim of this work is to allow a natural interaction for the user who performs inventory tasks. In this paper we show the RFIDGlove system, which consists of a glove with an integrated RFID reader, an organic micro display and a communication system. The RFIDGlove system increases the efficiency of the activities in these areas, improving the user’s experience and comfort while he/she uses the system.
Context Management in Mobile Environments: a Semantic Approach
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Alejandro Cadenas, Carlos Ruiz, Iker Larizgoitia, Raúl García-Castro, Carlos Lamsfus, Iñaki Vázquez, Marta González, David Martín, María Poveda. CIAO'09: Proceedings of the 1st Workshop on Context, Information And Ontologies held with the European Semantic Web Conference (2009).
This paper presents a first draft of a context management model and architecture in the scope of mobile end-user services, paying special attention to mobile scenarios and specific mobility environments. The paper describes our notion of context and presents the process followed for developing the ontologies for representing context, providing an overview of the first version of these ontologies. Besides, we propose an architecture for managing context in mobile environments, including high-level descriptions of the components that compose it, as well as some low level details regarding the contextual interfaces involved. To show the way all these components interoperate and the advantages of the defined architecture and semantic model, we describe a use case with specific implementation details.