In this work we consider modeling the past volatilities through a Generalized Autoregressive Conditional Heteroskedasticity (GARCH) model using the Bayesian approach. Asymmetries in the shocks are accommodated by smooth transition models for the variance. We discuss problems related to the...

There was a decrease of 10.2% in the number of homicides in the State of Espírito Santo, between 2010 and 2014. During this period, substantial investments were allocated in a policy focused to reduce homicide, based on the organization of prison system and on the "Estado Presente em Defesa da...