Resource Oriented Architecture and REST

In light of the emerging discussion on Resource Oriented Architectures (ROA) and REST technology platform as solutions for Spatial Data distributed Infrastructures, the aim of this document is capture Resource Oriented Architectures principles and assess the feasibility as well as the advantages of using such approach compared with Service Oriented Architectures (SOA). Although most of the comments are domain independent we will use the INSPIRE (and the OGC services) infrastructure that is currently based on a SOA as domain for the comparative analysis.JRC.H.6-Spatial data infrastructure

A high bauxitic surface in the Amazone territory of Venezuela : mapping through the radar-slar imagery and exploratery examination

Au cours de l'inventaire géomorpho-pédologique du Territoire Fédéral Amazonas au Vénézuéla, d'importantes altérations bauxitiques ont été reconnues dans les zones élevées des hauts massifs montagneux cristallins de l'Est et du Nord de ce territoire. Il se compose de longs glacis emboîtés sur lesquels un réseau hydrographique relativement dense creuse d'étroites vallées en V. Le manteau d'altération est assez mal connu. La composition minéralogique situe l'altération entre allitisation et fermonosiallitisation, avec un début de déshydratation des oxyde

INSPIRE Network Services SOAP Framework

The goal of this document is to provide a definition and rationale for a proposed INSPIRE SOAP framework (SOAP nodes policy, RPC, attachments, WS-I, WSDL) and description of issues and solutions for the specific geospatial domain, for example GML handling in SOAP messages or interfaces definition of the OGC specifications.JRC.H.6-Spatial data infrastructure

SOAP Primer for INSPIRE Discovery and View Services

This document demonstrates the use of the proposed INSPIRE SOAP Framework for the INSPIRE Discovery and View services. This document focuses on the analysis of the WSDL itself (for both the Discovery and View services), explaining its parts and characteristics, as well as on the analysis of SOAP request and response messages, including headers and potential attachments. Moreover, the primer is providing also examples of user scenarios, with specific code samples.JRC.H.6-Spatial data infrastructure

Rayleigh-Jeans thermalization vs beam cleaning in multimode optical fibers

Classical nonlinear waves exhibit, as a general rule, an irreversible process of thermalization toward the Rayleigh-Jeans equilibrium distribution. On the other hand, several recent experiments revealed a remarkable effect of spatial organization of an optical beam that propagates through a graded-index multimode optical fiber (MMF), a phenomenon termed beam self-cleaning. Our aim here is to evidence the qualitative impact of disorder (weak random mode coupling) on the process of Rayleigh-Jeans thermalization by considering two different experimental configurations. In a first experiment, we launch speckle beams in a relatively long MMF. Our results report a clear and definite experimental demonstration of Rayleigh-Jeans thermalization through light propagation in MMFs, over a broad range of kinetic energy (i.e., degree of spatial coherence) of the injected speckle beam. In particular, the property of energy equipartition among the modes is clearly observed in the condensed regime. The experimental results also evidence the double turbulence cascade process: while the power flows toward the fundamental mode (inverse cascade), the energy flows toward the higher-order modes (direct cascade). In a 2nd experiment, a coherent laser beam is launched into a relatively short MMF length. It reveals an effect of beam cleaning driven by an incipient process of Rayleigh-Jeans thermalization. As discussed through numerical simulations, the fast process of Rayleigh-Jeans thermalization observed in the 1st experiment can be attributed due to a random phase dynamics among the modes, which is favoured by the injection of a speckle beam and the increased impact of disorder in the long fiber system

Schema Transformation for INSPIRE

Many Legally Mandated Organisations (LMOs) and other data suppliers who are providing data within the INSPIRE themes will retain their own schemas for the data that they collect, manage and publish. For INSPIRE compliance however, they must also ensure that there is a Transformation Service available to transform the data to the appropriate INSPIRE schema. This service may be provided by the supplier; by the national government concerned; or by a third party. It may be an offline service with the INSPIRE compliant datasets then published on the web for the INSPIRE GeoPortal (and others) to access; or it may be available as a web service - preferably capable of being invoked automatically at the time that data is requested. This paper describes the State of the Art Analysis and the subsequent development of Technical Guidance for INSPIRE Transformation Network Services, as carried out by a consortium of RSW Geomatics, 1Spatial, and Rob Walker Consultancy for the EC Joint Research Centre. It will be of use to any organisation implementing a transformation from one schema to another and specifically to the GML schemas required by the INSPIRE Implementing Rules. This paper concludes that INSPIRE Schema Transformation Network Services are feasible with adherence to international standards, some already specified in INSPIRE regulations, together with the use of discreet standards based components that can be supplied by a variety of vendors. The Technical Guidance (TG) should help to move INSPIRE into the mainstream of current developments on the World Wide Web and spread the interoperability of geo-spatial data to a wider audience

Optimization and characterization of a femtosecond tunable light source based on the soliton self-frequency shift in photonic crystal fiber

International audienceWe take advantage of the Raman soliton self-frequency shift experienced during the propagation in an anomalous dispersive photonic crystal fiber in order to continuously tune the central frequency of ultrashort pulses. We discuss the fiber properties to be favored to obtain high power spectral densities and we carry out an extensive experimental study of the properties of the frequency shifted pulses in terms of spectral, autocorrelation, and RF spectrum measurements

Metadata Model for the European Forest Information and Communication Platform

This paper describes the metadata model conceived for the future European Forest Information and Communication Platform (EFICP). The core of the platform, currently under implementation in the scope of a two-year project funded by the European Commission, is given by a repository of metadata that describes the available information resources. These are distinguished in terms of resource categories (common / bibliographic resources, news, spatial data information services and statistical data) and are treated in a differentiated way by the EFICP metadata model, applying widely accepted standards such as ISO/OGC, Dublin Core, SDMX and RSS, whereas a key requirement for system interoperability is given by the set of INSPIRE implementation rules as currently available. This paper provides a description of the structure of the EFICP metadata model and its components. This model extends the metadata guidelines as proposed by the former NEFIS project. In order to support the online access and exchange of forestry specific statistical data, a general information model for the modelling of these resources in the context of a proposed EFICP reference reporting system has been created and is proposed for implementation on the basis of the SDMX standard. Keywords: metadata, Dublin Core, OGC, search and discovery, geospatial information services, forestry statistics, EFICS, EFIC