David J. Evans – författare

There are many hundreds of stone circles around Britain. Most were built in the Late Neolithic or Early Bronze Age and they can be found throughout England, Wales and Scotland, although there are concentrations in the more remote and upland areas. It is not known for certain why they were built, but they are believed to have had a ritual or ceremonial purpose and are often aligned to the sun or moon, with many also being burial sites.In Stone Circles in Britain, author David J. Evans travels over Scotland, Wales and England, surveying not only famous sites such as Stonehenge and Avebury but many other lesser-known stone circles. This fascinating picture of an important legacy from Britain’s prehistory will be of interest to all those who have seen and visited these mysterious structures.

While the architecture of present-day parallel supercomputers is largely based on the concept of a shared memory, with its attendant limitations of common access, advances in semicoductor technology have led to the development of highly parellel computer architectures with decentralized storage and limited connections in which each processor possesses high bandwidth local memory connected to a small number of such architectures, enabling cost-effective high-speed parallel processing for large volumes of data, with ultra-high throughput rates. Algorithms suitable for implementation on systolic arrays find applications in areas such as signal and image processing, pattern matching, linear algebra, recurrence algorithms and graph problems. This book provides an insight into the implementation of systolic arrays and gives a comprehensive overview of the techniques and theories contributing to the design of systolic algorithms.