The Commission on Geoinformation Infrastructures and Standards of the International Cartographic Association (ICA) has proposed a model based on five perspectives to describe Spatial Data Infrastructure (SDIs) using the Reference Model for Open Distributed Processing (RM-ODP) framework. This model was later extended by other researchers to describe the hierarchical relationship among SDIs and t...

Résumé. En réponse aux problèmes posés par la complexité croissante des réseaux et des attaques, les Systèmes de Détection d’Intrusions (SDIs) constituent une bonne alternative pour mieux sécuriser un système informatique. Cependant, les SDIs existants présentent des lacunes en terme de génération excessive d’alertes. Réellement, la majorité de ces alertes ne correspondent pas à des attaques (f...

In this paper we introduce the concept of Krasner hyperring $(R,+,cdot)$together with a suitable partial order relation $le $.xle y$.  Also we consider some Krasner hyperrings and define a binary relation on them such that to become ordered Krasner hyperrings. By using the notion of pseudoorder on an ordered Krasner hyperring $(R,+,cdot,le)$, we obtain an ordered ring. Moreover, we study s...

Technology and infrastructure both play key roles in achieving the optimisation of spatial data to support decision-making, in the spatial data community. Many institutional and technical initiatives have arisen in response to the increase in quantity and improving quality of spatial data to help users to structure the influx. However, there are persistent challenges to integrating institutiona...

0198-9715/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.compenvurbsys.2010.09.004 ⇑ Corresponding author. Tel.: +31 317 481697. E-mail address: [email protected] (Ł. Grus). The motives for constructing Spatial Data Infrastructures (SDIs) are often based on their anticipated benefits for society, economy, and environment. According to those widely articulated but rarely proven benefits, ...

Over the last ten years development of Spatial Data Infrastructures (SDIs) has become an important subject being a driving force towards the vision of Digital Earth increasing the availibility and accessibility of geographic information exchange and sharing of spatial data. Worldwide, large investments have been made to develop SDI initiatives. Given the expenditure and society‟s interest in th...

Spatial data infrastructures (SDIs) are becoming more mature worldwide. However, despite this growing maturity, longitudinal research on the governance of SDIs is rare. The current research examines the governance history of two SDIs in The Netherlands and Flanders (Belgium). Both represent decades-long undertakings to create a large-scale base map. During these processes, SDI governance change...

Spatial scientific research has increasingly become multi disciplinary. The urge of different disciplines to share disciplinary knowledge and information has increased. However, not many Spatial Data Infrastructures (SDIs) have succeeded in facilitating the needs of these multidisciplinary research communities. The article presented offers a methodological framework to develop a user centric SD...

Spatial Data Infrastructures (SDIs) are large, open, distributed and standards-based information systems which intend to facilitate and promote the use of spatial data and spatial services on the Internet. Spatial data describe information tied with locations on Earth, while spatial services allow to manipulate spatial data following a Service Oriented Architecture. This paper proposes to model...