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...

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...

Following the Uruguay Round of trade negotiations Canada replaced its import quotas on sensitive products with tariff rate quotas. The over-quota tariffs on those products operating under domestic supply management schemes (dairy and poultry products) ranged from a low of 155 percent on turkey...