2013
Autores
Severino, R; Pereira, N; Tovar, E;
Publicação
2013 IEEE 16TH INTERNATIONAL SYMPOSIUM ON OBJECT/COMPONENT/SERVICE-ORIENTED REAL-TIME DISTRIBUTED COMPUTING (ISORC)
Abstract
While Cluster-Tree network topologies look promising for WSN applications with timeliness and energy-efficiency requirements, we are yet to witness its adoption in commercial and academic solutions. One of the arguments that hinder the use of these topologies concerns the lack of flexibility in adapting to changes in the network, such as in traffic flows. This paper presents a solution to provide these networks with the ability to self-adapt to different bandwidth and latency requirements, imposed by traffic flows, by changing the cluster's duty-cycle and scheduling. Importantly, our approach enables a network to change its cluster scheduling without requiring long inaccessibility times or the re-association of the nodes. We show how to apply our methodology to the case of IEEE 802.15.4/ZigBee cluster-tree WSNs without significant changes to the protocol. Finally, we analyze and demonstrate the validity of our methodology through a comprehensive simulation and experimental validation using commercially available technology on a Structural Health Monitoring application scenario.
2013
Autores
Sousa, R; Rodrigues, F;
Publicação
International Journal of Knowledge Engineering and Data Mining
Abstract
2013
Autores
Curado Malta, M; Baptista, AA;
Publicação
Information Services and Use
Abstract
Recent studies show that there is no method to develop a Dublin Core Application Profile (DCAP). A DCAP is a very important construct to implement interoperability, therefore it is essential to have a method to be able to develop such a construct, in order to give DCAP developers a common ground of work. This paper presents the first version of a method to develop Dublin Core Application Profiles (Me4DACP V0.1) that has been developed in a PhD project with a Design Science Research (DSR) approach. Me4DCAP was built having as starting point the Singapore Framework for DCAP and shows the way through the DCAP development. It encompasses a group of pre-defined interconnected activities, explicitly states when they should take place, what techniques could be used to execute them and what artifacts should result from their execution. © 2013 - IOS Press and the authors.
2013
Autores
Malta, Mariana Curado;
Publicação
Abstract
These files are the recordings and transcripts of 3 interviews made to 3 Dublin Core Application Profiles developers with the aim to understand the process of a DCAP development. These interviews are framed in a PhD project that has as goal the definition of a method for the development of Dublin Core Aplication Profiles. An Application Profile is a construct on the Semantic Web that enhances interoperability.
2013
Autores
Malta, Mariana Curado; Baptista, Ana Alice;
Publicação
Abstract
These are the results (datasets) of a study reported in the paper ``A panoramic view on Metadata Application Profiles of the last decade``.
2013
Autores
Malta, Mariana Curado; Baptista, Ana Alice;
Publicação
Abstract
This report is framed in a research in progress project that has
as goal the development of a method for the development of Dublin
Core Application Pro les (Me4DCAP). The development of the rst
version of Me4DCAP has been published. This paper describes in
detail Me4DCAP V0.1, showing the sources used to justify its design.
Me4DCAP was based in a Design Science Research methodological approach.
It has as starting point the Singapore framework for Dublin
Core Application Pro les (DCAP) and the Rational Uni ed Process;
and integrates also knowledge from: (i) software development processes
and techniques, focusing on the early stages of the processes
that deal with data modeling; and from (ii) the practices of the metadata
community concerning DCAP development. Me4DCAP establishes
the way through the DCAP development. It establishes when
activities must take place, how they interconnect, and which deliverables
they will bring about; it also suggests which techniques should
be used to build these deliverables.
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