Best Selling Books by Gregg Lewis

Implementations of two effective matrix reordering algorithms were published in this paper as Algorithms 508, which implements the Gibbs-Poole-Stockmeyer algorithm for reducing the bandwidth of a matrix, and 509, which implements the Gibbs-King algorithm for reducing the profile of a matrix. Reduction of matrix profile is more often required than bandwidth reduction, but Algorithm 509 is substantially slower than Algorithm 508. Consequently, the Gibbs-Poole-Stockmeyer algorithm has been recommended and used in contexts where the better profile reduction provided by the Gibbs-King algorithm would be more appropriate. In addition, Algorithms 508 and 509 both contain unnecessary restrictions on problem size and provide little error checking. The authors describe a new FORTRAN implementation of both reordering algorithms which is portable, faster, more reliable and uses less storage than the original implementations. The new implementation of the Gibbs-King algorithm is much faster than Algorithm 509, generally slightly faster than Algorithm 508 and nearly as fast as the new implementation of the Gibbs-King-Stockmeyer algorithm. (Author).

The author of Seven Promises of a Promise Keeper tells how the lives of eightobedient men were transformed when they put their faith into action.

In our 21st-century world, we insulate ourselves with safety. We insure everything from vacations to cell phones. But in the end, everyone faces risk. Even if our choices are not dramatic or the outcome not heartbreaking, what does it mean if we back away instead of move forward? Have we so muffled our hearts and minds that we fail to reach for all that life can offer us--and all that we can offer life? As a child on the dangerous streets of Detroit, and as a surgeon in operating theaters around the world, Dr. Ben Carson has learned all about risk--he faces it on a daily basis. Out of his perilous childhood, a world-class surgeon emerged precisely because of the risks Dr. Carson was willing to take. In this book, he examines our safety-at-all-costs culture and the meaning of risk and security in our lives.--From publisher description.