Books by Robert O'Brien

This book presents an introduction to the problems and strategies for modeling age, period, and cohort (APC) effects for aggregate-level data. These strategies include constrained estimation, the use of age and/or period and/or cohort characteristics, estimable functions, variance decomposition, and a new technique called the s-constraint approa

"Stay Home" is a collection of short, humorous essays that explain why readers should remain home. Topics include transportation, climate change, holidays and important stuff that can change the world.

Recent international subsidy regulation is contributing to a dual transformation of the state. Subsidy conflicts emerge as the attempts by states, firms and social forces to adapt to an increasingly global economy collide with variations of liberal development models.

This book presents an introduction to the problems and strategies for modeling age, period, and cohort (APC) effects for aggregate-level data. These strategies include constrained estimation, the use of age and/or period and/or cohort characteristics, estimable functions, variance decomposition, and a new technique called the s-constraint approach. Emphasizing both the geometry and algebra of several APC approaches, the book develops readers¿ understanding of the statistical issues of APC analysis and shows how common methods are related to each other.