This paper analyzes the impact of the Indian Ocean Tsunami in 2004 and the Nias earthquake in 2005 on population dynamic across regions in Aceh and North Sumatera. We find no evidence that the disasters affected the regularity of size-distribution of the regions. The estimates of a population...

The survival of firms under changes in the business environment caused by exogenous shocks can be explained using economic Darwinism. Exogenous shocks can cause 'cleansing effects'. Shocks clean out unproductive firms so that available resources are allocated to the remaining more productive...

The survival of firms under changes in the business environment caused by exogenous shocks may be explained using economic Darwinism. Exogenous shocks can cause ‘cleansing effects’ as shocks clean out unproductive firms so that available resources are allocated to the remaining more...