Almost similar to quality management in common, Six-Sigma has penetrated most of the sectors of business world these days. Although Six-Sigma originated in industry, it has stirred a substantial amount of academic literature. This paper reviews the existing literature describing the trends,...

We test how a reduction in travel cost affects the rate and direction of scientific research. Using a fine-grained, scientist-level dataset within chemistry (1991-2012), we find that after Southwest Airlines enters a new route, scientific collaboration increases by 50%, an effect that is...

We test how a reduction in travel cost affects the rate and direction of scientific research. Using a fine-grained, scientist-level dataset within chemistry (1991-2012), we find that after Southwest Airlines enters a new route, scientific collaboration increases by 50%, an effect that is...