This paper presents a denoising technique based on wavelet algorithm for inverting geoelectrical resistivity data. The presented work compares different denoising process by thresholding wavelet algorithm. Discrete wavelet transform is used to denoise the geoelectrical resistivity data. It is suitable for applying vertical electrical sounding data. The optimum performance is obtained and the result is investigated under several constraints. This method can be adopted to any geophysical data for pre-processing. Daubechies wavelet functions ('db') of different decomposition levels with four (''rigsure'',''universal thresholding'',''minimax'',''heursure'') thresholds were attempted and the significant reduction of noise is effectively done. The data is initially subjected to synthetic noisy data with various levels of signal to noise ratio (SNR) and tested results with optimum condition is implemented to the noisy field data which is verified with the nearby ground truth information. Error measures reveal that is algorithm is best suited for denoising the geoelectrical resistivity data.

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This study examines the effect of monetary inflation for a two-warehouse single-product inventory system, in which items are stored in a limited capacity Own Warehouse (OW) and an unlimited capacity Rental Warehouse (RW). Demand for an item is considered stock dependent. Items may deteriorate at a different constant rate in both warehouses. Shortages are allowed in the stock-out period and are partially backlogged and satisfied in the next replenishment point. The supplier permits flexible payment options for the retailer to pay the amount in three equal payments at different time points. The retailers’ preferred payment option is as follows: the first payment is prior to the replenishment point with some discount; the second payment is one-third of the total purchasing cost, which is paid at the time of the replenishment epoch; and the third payment is after the replenishment point and before the start of the next cycle, with some penalty. The influence of inflation on the cost calculation is considered, and an analytic expression for optimal minimal cost is explicitly derived from this. We performed arrived sensitivity analysis to discern the effects of the inflation and backlogging rates, as well as the effects of the discount rate on purchasing cost, and the effects of penalties upon the late payment of purchasing costs in optimizing the total cost.

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