Preface: Earth surveillance and space-based monitoring of the environment: integrated approaches

(2018) is to evaluate the tropospheric delay performance for Global Navigation Satellite Systems (GNSS) integrated water vapor estimation by using GPT2w model, ECMWF's IFS (European Centre for Medium-Range Weather Forecasts) reanalysis model and ground meteorological data from two stations of the permanent network of Cyprus and Greece. (2018) performed a comparative study of the prediction performance of the Random Forests method has been accomplished, with respect to the corresponding results of the Linear Multivariate Regression. Furthermore, authors make suggestions for the mass appraisal system in Nicosia, examine the dependent variable (Accepted Price), its differences from the Declared Price (by the buyer and seller) and its dependency on the property's characteristics (independent variables).