The term "Brima Models" might be a typographical error or a specific term you're asking about. However, if you're referring to "ARIMA" (AutoRegressive Integrated Moving Average) models, these are a class of statistical models used for forecasting time series data.
If "Elizabeth" relates to a specific context—perhaps a researcher, a case study, or a character in a narrative—it would help to have more context to provide a relevant and accurate