Artefacts which occur during the processing of small biopsy specimens can cause sufficient tissue distortion to impair interpretation and can be a considerable source of nuisance. Triangular artefacts were noted in renal and liver biopsy specimens which were caused by foam sponges in embedding cassettes. Scanning electron microscopic examination of the sponges showed they comprised a mesh of sc...

This study addresses the mechanisms by which collaboration environments affect design teams’ collaboration via shared artefacts. We collected data by observing design teams consisting of experts and decision makers. The teams utilized (1) a state-of-the-art web conferencing collaboration environment and (2) a three-dimensional virtual world in their collaboration. Our analysis reveals the virtu...

Nowadays, our living environments already provide ubiquitous network connectivity and are populated by an increasing number of artefacts (objects enhanced with sensing, computation, and networking abilities). In addition, people are increasingly using mobile devices as intermediaries between themselves and the artefacts. In order to create, manage, communicate with, and reason about ubiquitous ...

This paper introduces digital scholarship: aprocess inwhich individuals perform all scholarly work electronically, working entirely with digital media. A proposal is made for patron-augmenteddigital libraries (PADLs): a class of digital libraries designed to support the digital scholarship of its patrons. PADLs not only provide facilities for search and retrieval of library artefacts, but also ...

Bayer colour filter arrays (CFA) are commonly used to obtain digital colour imagery from a single-chip CCD or CMOS camera. Colour information is captured via a regular array of colour filters placed over the image sensor, and the full colour image is reconstructed in a demosaicing process. Colour imagery derived in such a way is prone to visual artefacts including false colours, poor edge defin...

Résumé : Dans cet article, nous jetons les bases d’une ontologie formelle permettant de rendre compte de la nature générale des artefacts. L’objectif visé par une telle ontologie est d’aider à structurer des ontologies d’application dans des domaines où des artefacts spécifiques sont présents, autrement dit pratiquement tout domaine d’activité ! La conceptualisation s’appuie sur une littérature...

Our approach towards context awareness is to retrieve contextual information by augmenting our daily life objects (like a chair, a mirror etc.) with sensing capabilities. We call such artefacts sentient artefacts. To avoid developing dedicated context-aware application integrating these artefacts, there is a need for a generic computing platform that can assist application programmers to develo...

Non-reproducible sequence artefacts are frequently detected in DNA from formalinfixed and paraffin-embedded (FFPE) tissues. However, no rational strategy has been developed for reduction of sequence artefacts from FFPE DNA as the underlying causes of the artefacts are poorly understood. As cytosine deamination to uracil is a common form of DNA damage in ancient DNA, we set out to examine whethe...

This paper presents a method of objective evaluation of the edge blur and ringing artefacts produced by image codecs. It is difficult to detect and measure individual artefacts in coded images. A synthetic test image is developed to separate and measure edge blur and ringing artefacts due to image compression. The influence of pixel intensity gradient on the quality metrics is investigated, the...

The importance of assessing the metal-induced artefacts in magnetic resonance imaging (MRI)-guided brachytherapy is growing along with the increasing interest of integrating MRI into the treatment procedure of cervical cancer. Examples of metal objects in use include intracavitary cervical applicators and interstitial needles. The induced artefacts increase the uncertainties in the clinical wor...