Abstract
An ultra-narrow transmission filtering scheme that combines the response of a phase-shift fiber Bragg grating and a broadband rejection micro-optical filter is proposed. The full implementation process is disclosed starting from the simulated spectral responses, grating fabrication and final assembling and test. This scheme intends to be an alternative and feasible engineering solution for one-end optical filtering interface for signal processing and analysis. © 2009 SPIE.

Abstract

Abstract
This paper presents the design of a user interface for repositories of learning objects. It integrates several tasks, such as submission, browse, search, and comment/review of learning objects, on a single screen layout. This design is being implemented on the web front-end of crimsonHex, a repository of specialized learning objects, developed as part of the EduJudge, a European project that aims to bring automatic evaluation of programming problems to e-Learning systems. © 2009 IADIS.

Abstract
In this work, an LPG-based Mach-Zehnder modal interferometer with a tapered fiber section between the two LPGs is studied as a sensing structure for measuring environmental refractive index. To interrogate this sensing device, coherence addressing and pseudo-heterodyne processing were used. A fiber taper was made between the two LPGs to improve and tailor the sensitivity of the sensor. Experimental results show that the sensitivity to external refractive index increases with the length of the taper and that the sensitivity enhancement is stronger for lower order cladding modes. © 2009 SPIE.

Abstract
Airborne self-separation is an air-traffic management concept in which pilots are allowed to select the optimal route for the aircraft in real time. In such environments, pilots are assisted by an airborne system that detects possible route conflicts with neighbouring aircraft and gives advice for manoeuvring solutions to avoid conflicts. In this paper, we evaluate a game-theory approach for conflict resolutions between aircraft. We modelled the aircraft in a well established simulation framework. Preliminary results give an insight into the dependability of the approach when dealing with the lossy nature of the wireless environment. © 2009 IEEE.

Abstract
Our research goal is the generation of working web applications from high level specifications. Based on our experience in using XML transformations for that purpose, we applied this approach to the rapid development of database management applications. The result is an architecture that defines of a web application as a set of XML transformations, and generates these transformations using second order transformations from a database schema. We used the Model-View-Controller architectural pattern to assign different roles to transformations, and defined a pipeline of transformations to process an HTTP request. The definition of these transformations is based on a correspondence between data-oriented XML Schema definitions and the Entity-Relationship model. Using this correspondence we were able produce transformations that implement database operations, forms interfaces generators and application controllers, as well as the second order transformations that produce all of them. This paper includes also a description of a RAD system following this architecture that allowed us to perform a critical evaluation of this proposal.