constructionof underground dams is a practical solution to save groundwater in alluvium watersheds, particularly in arid and semi-arid regions where surface water scarcity is an environmental challenge. considering socio-economic and environmental benefits of underground dams, the accurate locating is the primary consideration for dam construction. the new technologies and methods are a step to...

Let Xl' ""Xn be a sample from a population with continuous distribution function F(x -8) such that F(x) +F(-x) =1 and o 80 cannot tend to 1 as 8 -80 -+ 00 more than n times faster than the tails of F tend to O. Some standard as well as robust tests are considered with respect to this rate of conver...