We consider temporal aggregation of stationary and nonstationary time series with short memory, long memory and antipersistence, within the framework of fractional autoregressive processes. Asymptotically, long memory and antipersistence are preserved whereas short memory components vanish. In...

The article introduces a concept of probabilistic ecological competition from the aquatic hyacinth perspective, which often helps to track and analyze the sustainability of different species involved in the ecological system. A case study is presented to investigate the impact of the pH content...