Rainfall is considered as one of the most difficult and complex elements of the
hydrological cycle, to understand and model, due to the complexity of air operations that
generate rain. The importance of research comes from the direct relationship b
etween the
rainfall amount and economic & social activities of the population, planning scopes of the
water resources management, particularly with respect to the agricultural development.
The research aims to highlight the rainfall amounts in Tartous station which is
located in the southern part of the Syrian coast, and applying one model of Box-Jenkins
models for the purpose of predicting future rainfall amounts. Multiple Arima models have
been tested. The results showed that the model SARIMA (3,0,4) was the best one. Data
were divided into 43 years to build the model and eight years to test it. The test results
gave high accuracy in the performance, and the model was used to predict the values of
annual rainfall for the next twenty years.
This research aims to identify the Genral Trend of prices movements of stocks of IBTF bank listed in Damascus Securities Exchange (DSE) during the period starting from the beginning of Damascus Stock Exchange in March 2009 until the end of February 2
011, in order to construct a model helping to predict the future prices of the stock in the short term. Using regression models for time series and ARIMA models, the reseach found that there is an incresing trend in stock prices during this period, and has also concluded that the best model to predict future stock prices is the regression model of the third degree and ARIMA (2,0,1), based on several indicators to test the quality of the model in question without taking into account the emergency and seasonal changes
