Seismic inversion is a method that extracts acoustic impedance data from the seismic traces. Source wavelets are band-limited, and thus seismic traces do not contain low and high frequency information. Therefore, there is a serious problem when the deterministic seismic inversion is applied to real data and the result of deterministic inversion is smooth. Low frequency component is obtained fro...

The design and analysis of computer experiments (DACE) usually envisions performing a single experiment, then replacing the expensive simulation with an approximation. When the simulation is a nonlinear function to be optimized, DACE may be inefficient, and sequential strategies that synthesize ideas from DACE and numerical optimization may be warranted. We consider several such strategies with...

Iterative decoding of Low Density Parity Check (LDPC) codes using the Parity Likelihood Ratio (PLR) algorithm have been proved to be more efficient compared to conventional Sum Product Algorithm (SPA). However, the nature of PLR algorithm tends to put numerious pieces of data to this decoder and perform computation intensive operations, which is a major challenge for building a practical real-t...

background: the area of contaminated lands exposed to the health risk of environmental pollutants is a matter of argument. in this study, a new method was developed to estimate the amount of area that is exposed to higher than normal levels of cr, mn, and v. methods: overall, 170 soil samples were collected from the upper 10 cm of soil in an arid area in central part of iran in semnan province....

hydrograph modeling and prediction of groundwater levels are the main concerns of most hydrogeological calculations and water resource management process. the present study is an application of sequential gaussian simulation (sgsim) method for predicting groundwater levels using recorded monthly data (180 months) related to 21 piezometers of behbahan aquifer, southwest of iran. to generate real...

‎we extend the method of adaptive two-stage sequential sampling to‎‎include designs where there is more than one criteria is used in‎‎deciding on the allocation of additional sampling effort‎. ‎these‎‎criteria‎, ‎or conditions‎, ‎can be a measure of the target‎‎population‎, ‎or a measure of some related population‎. ‎we develop‎‎murthy estimator for the design that is unbiased estimators for‎‎t...