Offers a comprehensive overview of the principles underlying decompression theory. This book bridges the gap between introductory books and source scientific information. Written by a technical diving instructor, it teaches about decompression theory. It offers an understanding of what is happening during decompression dives.

During the last few years technical diving has become much more popular and has moved into mainstream diving. As a result a significant number of recreational divers are moving towards technical diving. Despite this, there are still many misconceptions about what technical diving actually means and what is involved. Introduction to Technical Diving - An Introduction by Mark Powell gives a straightforward overview of technical diving and dispels many of the myths surrounding this area. It explores what is meant by technical diving, what is involved, the risks that arise and how you can move...

When East sees the twisted body of Girl Garner at the bottom of the stairs, he knows that the Garner boys will blame him for the death of their sister. The Garners were his closest mates - now they are his enemies, and he knows he has to run. But East can't leave West, his younger brother, whom he has always protected and whose face is distorted by a cruel - and unmissable - disease. With West in tow, East flees into the wilds of Essex, not knowing if they will ever be able to return home, and not suspecting that West might have his own reasons for wanting to get away. Stranded in unknown...

Business has started from 'data up' and needs to start again from 'value down', going back to the drivers of real business value and deciding what insights would help realize that value. Only then can we begin to interrogate data with purpose.