Neumann and Dirichlet boundary conditions. â¢ When using a Dirichlet boundary condition, one prescribes the. value of a variable at the boundary, e.g. u(x) = constant . â¢ When using a Neumann boundary condition, one prescribes the. gradient normal to the boundary of a variable at the boundary, e.g. ânu(x) = constant .
The concept of motivational interviewing evolved from experience in the treatment of problem drinkers, and was first described by Miller (1983) in an article published in Behavioural Psychotherapy.
In addition to presenting on the motivational speaking circuit, Dave is the author/creator of the LifeTime Organizer and the author of Sticks and Stones: Exposed: The Power of Our Words. He is president and CEO of Weber Associates, Inc., a training and consulting firm in Atlanta, Georgia.