Due to the proliferation of social media platforms, digital photo sharing has emerged as a new way of establishing chronology of events and reminiscing forgotten experiences. The growing trend of presenting visual content using timelines or shared photo streams offers new possibilities to social media applications. In this paper, a novel interface for visualisation and sharing of multiple photo...

Diffuse optical imaging is an emerging medical imaging modality based on near-infrared and visible red light. The method can be used for imaging activations in the human brain. In this study, a deformable probabilistic atlas of the distribution of tissue types within the term neonatal head was created based on MR images. The use of anatomical prior information provided by such atlas in reconstr...

The IMS Question and Test Interoperability (QTI) standard has had a restricted take-up, in part due to the lack of tools. This paper describes the ‘ASDEL’ test delivery engine, focusing upon its architecture, its relation to item authoring and item banking services, and the integration of the R2Q2 web service. The tools developed operate with a web client, as a plug-in to Moodle, or as a deskto...

High-dynamic-range (HDR) images are superior to conventional images. The experiments in this paper measure camera and human responses to calibrated HDR test targets. We calibrated a 4.3-log-unit test target, with minimal and maximal glare from a changeable surround. Glare is an uncontrolled spread of an image-dependent fraction of scene luminance in cameras and in the eye. We use this standard ...

We present analytic expressions for the amplitude and phase of photon-density waves in strongly scattering, spherically symmetric, two-layer media containing a spherical object. This layered structure is a crude model of multilayered tissues whose absorption and scattering coefficients lie within a range reported in the literature for most tissue types. The embedded object simulates a pathology...

This paper describes the need of knowing fiber non-linear coefficient in global optical networks. The basic Kerr non-linearities that appear in silica-based optical fibers have been summarized, together with their implications for optical communication systems. In this paper, the non-linear coefficient has been discussed and its measurement techniques reviewed. The brief description of each met...

1 The work presented in this paper is funded by the European Community within the framework of the ESPRIT LTR project CREWS (Cooperative Requirements Engineering With Scenarios) n°21903. Abstract Since a few years, scenarios have gained in popularity in Requirements Engineering. Textual scenarios are narrative descriptions of flows of actions between agents. They are often proposed to elicit, v...

The use of the Internet as a supportive tool for learning process made easier the transposition of geographical barriers in education, bringing some challenges to Distance Learning, such as the development of web-based learning material, whose content will be explored by learners from different places and cultures. Therefore, it is interesting to think of providing tools which support teachers ...

Acquiring foreign language from degraded hardcopy documents is of interest to military and border control applications. Bi-tonal image scans are desirable because file size is small. However, the nature of hardcopy degradations and the scanner or image enhancement software capabilities used directly affect the quality of the captured image and the extent of language acquisition. We applied a co...

This paper discusses a prototype of a learning aid on a mobile phone to support Deaf people learning computer literacy skills. The aim is to allow Deaf people to learn at their own pace which in turn reduces the dependence on a teacher to allow weaker learners be assisted. We studied the classroom dynamics and teaching methods to extract how lesson content is delivered. This helped us develop a...