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...

Current trade policy pursued by the Sri Lankan government on rice can best be described as adhoc as it is characterized by protecting farmers during glut seasons and consumers during deficit seasons. This study examines the economy-wide impacts of various policy packages on rice and related...