Exercise 3.2d: Calculate weights on hydraulic-head and flow observations For the head observations, first calculate the total variance of measurement error for the head observations, by adding the variance for the elevation measurement and the variance for the water-level measurement. This total variance is 1.0025 m, as shown in Table 3.2. Then, calculate the weight as the inverse of this varia...

Groundwater is an essential water resource in the current era, and studying its sustainability management highly necessary nowadays. In area of research interest, reduced mean annual Sutlej River flow, increase population/built-up areas, enhanced groundwater abstractions have recharge. To address this issue, recharge modeling through ponding was carried out using a modular three-dimensional fin...

in this note we point out and rectify some errors in a recently published paper “n. singh, r. jain: coupled fixed point results for weakly related mappings in partially ordered metric spaces, bull. iranian math. soc. 40 (2014), no. 1, 29-40”.

in the present paper‎, ‎we show the existence of a coupled fixed point for a non-decreasing mapping in partially ordered complete metric space using a partial order induced by an appropriate function $phi$‎. ‎we also define the concept of weakly related mappings on an ordered space‎. ‎moreover common coupled fixed points for two and three weakly related mappings are also proved in the same space‎.

This study aimed to control land subsidence by improving the groundwater balance in Varamin plain using Groundwater Modelling System software and a multi-criteria decision model. For this purpose, aquifer level quantification rate simulation were performed with MODFLOW model SUB package, respectively. The results showed 6 m decrease over 5-year period central parts was 37 cm. Accordingly,...