This study investigates the trend of X-(in) efficiencies across Eastern European 2004-accession countries' banking industries over the period 1999 to 2003. We use Data Envelopment Analysis (DEA) estimators to obtain proxies for X-(in)efficiencies and we then analyse the inter-country industry...

We exploit the natural distinction between the attacking and defensive aspects of tennis to get a better understanding of the origins of relative inefficiency. Attacking is simply when a player is serving and defending is when a player is returning serve. We use data envelopment analysis to...