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.

Scattered among beautiful rural landscapes around England are ancient standing stones and the remains of many different kinds of megalithic and neolithic monuments. In this book David J. Evans follows on from his previous publication Stone Circles in Britain to explore the sites of the standing stones and other similar megalithic and neolithic structures around England. The meaning and purpose of some of these stones and structures is often unclear today, but many are believed to have a ritual significance or to be aligned astronomically. Not only single or double-standing stones, stone rows and settlements are investigated, but also the wealth of various burial chambers such as mounds, cairns, cists, dolmens, long barrows, tumps and quoits.This fascinating picture of this important legacy from the prehistory of Britain will be of interest to all those who have seen and visited these mysterious stones and structures around England.

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.