A new approach to Bäcklund transformations for longitudinal dispersion of miscible fluid flow through porous media in oil reservoir during secondary recovery process

In this paper a theoretical model has developed for the dispersion problem in porous media in which the flow is one dimensional and the average flow is unsteady. The Solution of the dispersion problem is presented by means of a new approach to Bäcklund transformations of nonlinear partial differential equations

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Data compression of power quality events using the slantlet transform

The slantlet transform (SLT) is an orthogonal discrete wavelet transform (DWT) with two zero moments and with improved time localization. It also retains the basic characteristic of the usual filterbank such as octave band characteristic, a scale dilation factor of two and efficient implementation. However, the SLT is based on the principle of designing different filters for different scales unlike iterated filterbank approaches for the DWT. In this paper a novel approach for power quality data compression using the SLT is presented and its performance in terms of compression ratio (CR), percentage of energy retained and mean square error present in the reconstructed signals is assessed. Varieties of power quality events, which include voltage sag, swell, momentary interruption, harmonics, transient oscillation and voltage flicker are used to test the performance of the new approach. Computer simulation results indicate that the SLT offers superior compression performance compared to the conventional discrete cosine transform (DCT) and the DWT based approaches

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Not AvailablePlant hoppers (BPH and WBPH) are very important pest of rice causing significant yield losses (30%) in Asian countries. Identification and Cultivation of resistant varieties is better and environmentally friendly approach. So one hundred three released rice varieties developed at National Rice Research Institute, Cuttack were evaluated for Brown Plant Hopper (BPH) and White Backed plant Hopper (WBPH) in net house of NRRI, Cuttack during Kharif 2019. TN-1 and PTB 33 are used as susceptible and resistant check in this experiment respectively. Two varieties namely Lunasampad and Gayatri showed moderately resistant reaction with SES Score 3 to BPH. Six varieties such as CRDhan 204, Tapaswini, Kalyani-2, Pradhandhan, Gayatri and Kshira showed moderately resistant reaction with SES Score 3 to WBPH. The variety Gayatri showed moderate resistant to BPH and WBPH. None of the variety are resistant to BPH and WBPH. These varieties can be popularised in hopper endemic areas and can be utilised in varietal development programme.Not Availabl

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Not AvailableInsect pest of rice are changing day by day due to change of climate. The insect pest of minor importance is shifting to the major one and some important insect pest is taking the position of minor one in this present climatic scenario. At present the major insect pests of rice in Odisha are YSB, Swarming Caterpillar, etc.Not Availabl

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Not AvailableAutoregressive fractionally integrated moving average (ARFIMA) is widely employed model for long memory time series forecasting in divergent domain from several decades. One of the main pitfall of this model is the presumption of linearity. As many long memory time series data in real world are not purely linear, therefore there is an opportunity to enhance the prediction ability of ARFIMA models by fusing with other nonlinear models. With this reasoning, the present article attempts to estimate the parameters of ARFIMA model by maximum overlap discrete wavelet transform (MODWT) and long memory time series prediction was made by combining ARFIMA-MODWT and ANN for forecasting spot prices of mustard. Experimental study justied the superiority of the proposed hybrid model over ARFIMA model in terms of several measurement indicesNot Availabl

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Not AvailableSixty one rice land races were evaluated for Brown Plant Hopper (BPH) and White Backed Plant Hopper (WBPH) in net house of NRRI, Cuttack during kharif 2020. TN-1 and PTB 33 are used as susceptible and resistant check in this experiment respectively. None of the land races showed resistant and moderate resistant with SES Score 1, 3 in both BPH and WBPH. Six varieties namely Kalachampa, Kalisaru, Kalajeera, Dubraj, Baikani, Govind showed moderate susceptible reaction to BPH with Score 5. Similarly eleven varieties namely Velari, Mahulkuchii, Seulpani, TikiMahsuri, Kalama, Lajkulibad, Dubraj, Bansapatri Jatia, Magura, Surjakanta. showed moderate susceptible reaction to WBPH. Other varieties showed susceptible and highly susceptible reaction to both BPH and WBPH. Only the genotype Dubraj showed moderately susceptible to BPH and WBPH.Not Availabl