This paper describes an expedition to map a first century B.C. ship wreck off the coast of the Greek island of Antikythera using an Autonomous Underwater Vehicle (AUV) equipped with a high resolution stereo imaging system. The wreck, first discovered in 1900, has yielded a wealth of important historical artefacts from two previous interventions, including the renowned Antikythera mechanism. The...

Sharing Web services across the enterprise and to support B2B integration becomes more intensive and critical for businesses. This paper proposes a process to generate Web services from the attributes describing the business objects and the coordination artefacts as described in the highest abstraction level of a business model i.e. the universe of discourse where the elements are unique. The p...

Artefacts (physical and institutional) are ubiquitous of our social environment. We live in a tight network of socio-technical systems, which are systems where agents interact with created objects. There is an increasing need for rigorous methods to model, specify, and reason about socio-technical systems in general, and about artefacts and their functions in particular. We propose a formal the...

There is a growing interest in information systems implemented as Internet-based software artefacts. Little attention has been paid to a comprehensive picture of such artefacts and their difference in relationship to traditional software artefacts. This paper presents an analysis of the Internet-based software artefact in order to expose differences from and similarities to traditional informat...

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...

An artefact for MASs is an entity not driven by an inner goal (as agents are), but used by agents to achieve their own goals. In this paper, we assume agents and artefacts as first-class entities in MAS engineering, and claim that agent-oriented methodologies should exploit these two abstractions as the basic bricks for the whole engineering process. As a first testbed, we take the SODA agent-o...

BACKGROUND To reduce the possibility of secondary deterioration of spinal injuries, it is desirable to maintain the spinal immobilisation that is applied in the prehospital setting throughout computed tomography (CT) scanning. A previous study found that metallic components within the inflation valve of the vacuum mattresses caused CT artefacts. The aim of our study was to investigate the effec...

ALLEN, J. and JONES, R., 1980 (31 v): Oyster Cove, archaeological traces of the last Tasmanians and notes on the criteria for the authentication of flaked glass artefacts. Pap. Proc. R. Soc. Tasm., 114: 225-233. ISSN 0080-4703. Depctrtment of Prehistory, Australian National University, Canberra, A.C.T., Australia. Stone, bottle glass and pottery artefacts occur at the Oyster Cove Aboriginal Sta...

The paper is an investigation into the relation between use-oriented design and object-oriented methods. Based on the notions of historical crystallisation of praxis into artefacts, the concept of secondary artefacts, and the notion of boundary objects, it is argued that object-oriented descriptions should be understood as transformations of artefacts from the considered praxis rather than mode...