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Professor Alexander Thom, who died in 1985, was a distinguished engineer. Independently of his 'mainstream' academic career, he developed a deep and active interest in the prehistoric megalithic sites of Britain and Brittany, visiting and surveying many hundreds of them over a period of forty years. Thom's interpretations of the field data have aroused strong interest and some intense controversy. The main areas of debate are: geometry (the methods used to set out the megalithic rings, many of which appear to be non-circular); mensuration (the possible use of 'standard' units of measurement...

3. 1 What are formal methods? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3. 2 A survey of formal methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3. 2. 1 FDTs and FSLs for sequential software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3. 2. 1. 1 VDM (Vienna Development Method). . . . . . . . . . . . . . . . . . . . . 19 3. 2. 1. 2 Z. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

An authoritative introduction to the fascinating topic of archaeoastronomy-ancient peoples' understanding and use of the skies.

How human communities interpret what they perceive in the sky is vital in fulfilling humankind's most basic need to comprehend the universe it inhabits, both from a modern scientific perspective and from countless other cultural standpoints, extending right back to early prehistory. Archaeoastronomy, which is concerned with cultural perceptions and understandings of astronomical phenomena, is a rich cross-disciplinary field.

The central aim of "Handbook of Archaeoastronomy" is to provide a reliable source for theory, method, interpretation and best practices that will give a definitive...