Motilal Nehru National Institute of Technology Allahabad

About: Motilal Nehru National Institute of Technology Allahabad is a education organization based out in Allahabad, Uttar Pradesh, India. It is known for research contribution in the topics: Computer science & Control theory. The organization has 2475 authors who have published 5067 publications receiving 61891 citations. The organization is also known as: NIT Allahabad & Motilal Nehru Regional Engineering College.

Computationally efficient joint imperceptible image watermarking and JPEG compression: a green computing approach

Abstract: This paper presents a computationally efficient joint imperceptible image watermarking and joint photographic experts group (JPEG) compression scheme In recent times, the transmission and storage of digital documents/information over the unsecured channel are enormous concerns and nearly all of the digital documents are compressed before they are stored or transmitted to save the bandwidth requirements There are many similar computational operations performed during watermarking and compression which lead to computational redundancy and time delay This demands development of joint watermarking and compression scheme for various multimedia contents In this paper, we propose a technique for image watermarking during JPEG compression to address the optimal trade-off between major performance parameters including embedding and compression rates, robustness and embedding alterations against different known signal processing attacks The performance of the proposed technique is extensively evaluated in the form of peak signal to noise ratio (PSNR), correlation, compression ratio and execution time for different discrete cosine transform (DCT) blocks and watermark sizes Embedding is done on DCT coefficients using additive watermarking

On some invariant solutions of (2+1)-dimensional Korteweg–de Vries equations

Abstract: In the present research, similarity transformation method is proposed to obtain some more general invariant solutions of (2+1)-dimensional Korteweg–de Vries equations This system of equations describes nonlinear waves propagation on the surface of shallow water The method reduces the number of independent variables by one using invariance property of Lie group theory Thus, Korteweg–de Vries equations are reduced into a system of ordinary differential equations employing twice of similarity transformation method This system of ordinary differential equations is solved under some parametric restrictions and provides invariant solutions The obtained results are supplemented by numerical simulation taking suitable choice of arbitrary constants and functions Eventually, the elastic behavior of multisoliton, compacton, negaton, positon, kink wave solution and dromion annihilation profiles are shown to make this research more admirable

Some more similarity solutions of the ( 2 + 1 ) -dimensional BLP system

Abstract: Some more similarity solutions of the coupled Boiti-Leon-Pempinelli system have been obtained by using similarity transformations method via Lie-group theory The solutions are attained under the restrictions imposed on the functions involved in infinitesimals Then, solutions are investigated through the graphical representation in different cases The cases depend upon some suitable choice of arbitrary functions involved there ie in the solutions to get physically meaningful structures Analytical solutions are supplemented by numerical simulations with appropriate choice of arbitrary functions and constants Eventually, profiles show single soliton, elastic multisolitons, quasi periodic, parabolic and asymptotic nature of solutions

Transformation of waste cooking oil into C-18 fatty acids using a novel lipase produced by Penicillium chrysogenum through solid state fermentation

Abstract: The prime aim of the current work was to illustrate the components existing in repeatedly used cooking oil and to develop an economical process for the production of fatty acids from low cost feedstock waste. The waste cooking oil was characterized by the occurrence of high molecular weight hydrocarbons and polymerized derivative of esters. Triacontanoic acid methyl ester, 2,3,5,8-Tetramethyldecane, 3,3 dimethyl heptane, and 2,2,3,3-teramethyl pentane were detected as thermal and oxidative contaminants that adversely affect the quality of cooking oil. Fundamentally, waste cooking oil comprises ester bonds of long chain fatty acids. The extracellular lipase produced from P. chrysogenum was explored for the hydrolysis of waste cooking oil. The incorporation of lipase to waste cooking oil in 1:1 proportion released 17 % oleic acid and 5 % stearic acid.