Miguel-Ángel Manso-Callejo

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Wireless Sensor Networks (WSNs) produce changes of status that are frequent, dynamic and unpredictable, and cannot be represented using a linear cause-effect approach. Consequently, a new approach is needed to handle these changes in order to support dynamic interoperability. Our approach is to introduce the notion of context as an explicit representation(More)
Although there is a vast literature available on interoperability models, and their respective interoperability levels, limited research has been carried out on the development of interoperability models for the implementation of Spatial Data Infrastructures. This article demonstrates the important role of metadata elements in the formalisation of(More)
— Metadata are necessary to allow discovery and description of data and service resources within a Spatial Data Infrastructure, however current manual metadata editing workflows are tedious and under-utilized. We discuss ongoing developments for semi-automatic metadata extraction from well-known imagery and cartographic data sources, being implemented(More)
Territory or zone design processes entail partitioning a geographic space, organized as a set of areal units, into different regions or zones according to a specific set of criteria that are dependent on the application context. In most cases, the aim is to create zones of approximately equal sizes (zones with equal numbers of inhabitants, same average(More)
Metadata are structured sets of data that describe other data and whose purpose is to improve knowledge about described resources. Metadata help to answer questions, locate, and facilitate the use of resources, but in addition to these features several authors propose another purpose: Make interoperability possible in a distributed environment such as(More)
Geospatial mobile applications interact with local and remote hardware to connect various data sources. These applications are currently evolving to include crowd sourcing functionalities, for citizen participation. In this paper we propose the identification, collection and information exchange of smart objects their geographic information, facilitating(More)
The important role of digital resources relies on whether metadata is available and has been correctly catalogued and indexed so that the user can discover and use geospatial datasets. However, the cost and the error-proneness in the manual metadata creation, the lack of information provided by the producers of geospatial datasets and the lack of experience(More)
This study was motivated by the need to improve densification of Global Horizontal Irradiance (GHI) observations, increasing the number of surface weather stations that observe it, using sensors with a sub-hour periodicity and examining the methods of spatial GHI estimation (by interpolation) with that periodicity in other locations. The aim of the present(More)
This paper raises the issue of a research work oriented to the storage, retrieval, representation and analysis of dynamic GI, taking into account the semantic, the temporal and the spatiotemporal components. We intend to define a set of methods, rules and restrictions for the adequate integration of these components into the primary elements of the GI:(More)