Paper-based artefacts (e.g., forms, manuals, questionnaires) are used ubiquitously and pervasively to support a wide set of activities. Education and Health Care are major examples of such endeavour. However, given the passiveness of the medium itself, several problems (e.g., communication, adjustment, lack of interactivity) are usually encountered within these activities which hinder human eff...

Elongation is a commonly found feature in artefacts made and used by humans and other animals and can be analysed in comparative study. Whether made for use in hand or beak, the artefacts have some common properties of length, breadth, thickness and balance point, and elongation can be studied as a factor relating to construction or use of a long axis. In human artefacts, elongation can be trac...

Ultrasound is used increasingly for diagnosing large vessel vasculitis (LVV). The application of Doppler in LVV is very different from in arthritic conditions. This paper aims to explain the most important Doppler parameters, including spectral Doppler, and how the settings differ from those used in arthritic conditions and provide recommendations for optimal adjustments. This is addressed thro...

The accuracy of calculations of both the degree and angle of polarization depend strongly on the noise in the measurements used. The noise in the measurements recorded by both camera based systems and spectrometers can lead to significant artefacts and incorrect conclusions about high degrees of polarization when in fact none exist. Three approaches are taken in this work: Firstly, the absolute...

Users’ characteristics and their different mobility stages sometimes reduce or eliminate their capability to perform paper-based activities. The support of such activities and their extension through the utilization of non paper-based modalities introduces new perspectives on their accomplishment. We introduce mobile multimodal artefacts and an artefact framework as a solution to this problem. ...

This chapter examines the field of applied ontology and the characterization of the notion of artefact within this same domain. It begins with a brief discussion of the basic issues that are of special relevance to formal ontology before then going on to present the main existing systems and emphasize their differences. The situation regarding the formalization of artefacts is discussed and the...

The design of mLearning applications based on mobile data technologies and the development of mLearning services implementing them is driven both by mobile technology innovation, and by the trend towards more student-centered and personalized learning. mLearning activities are normally delivered through an mLearning service, which may use a specialized hardware/software mobile learning artefact...