 The Hot Shoe Diaries: Big Light from Small Flashes
When it comes to photography, it’s all about the light.
After spending more than thirty years behind the lens—working for National Geographic, Time, Life, and Sports Illustrated—Joe McNally knows about light. He knows how to talk about it, shape it, color it, control it,... | | Introduction to Constraint DatabasesConstraint databases provide extra expressive power over relational databases in a largely hidden way at the data-storage or physical level. Constraints, such as linear or polynomial equations, are used to represent large sets in a compact manner. They keep the view of the database for a user or application programmer almost as simple as in... | | Geographic Information Systems DemystifiedThe field of geographic information systems (GISs) is emerging as one of today’s most exciting and progressive technical areas. GIS technology has evolved during the past four decades and is only now starting to penetrate major industry and service hubs. With such a wide array of new users, there exists not only considerable interest in GIS... |
