and this is a problem when estimating log-linear gravity equations. This has caused many researchers to either ignore the zero trade flows or to replace the zero with a small positive number. Both of these actions bias the resulting parameter estimates of the gravity equation. In this study we...

Country of Origin Labelling (COOL) regulation has been applied in the United States meat sector since October 2008. The industry must label beef, lamb and pork (ground meat and muscle cuts) sold through retail outlets according to its country of origin. The labelling requirements create...

When analyzing bilateral trade flow data, zero trade flows are quite common and problematic when a gravity equation is estimated with a log-linear functional form. This has caused many researchers to either ignore the zero trade flows or to replace zero with a small positive number. Both of...