Present study concerns with the numerical investigation of the MHD free convection and heat transfer fluid flow through a semi-infinite vertical porous plate with the effects of chemical reaction. A boundary layer approximation is premeditated to develop a flow model representing time dependent momentum, energy and concentration equations. The governing model equations are governed as a form of coupled nonlinear dimensionless system of partial differential equations (PDEs) by the as usual mathematical procedure of mathematical transformation and which model equations are solved by using explicit finite difference method (EFDM). Then the numerical results have been calculated by Compaq Visual FORTRAN (CVF) 6.6a and the obtained results have been capitalized for the variations of various dimensionless parameters on velocity, temperature and concentration profiles along with the skin friction coefficient, Nusselt number, Sherwood number, Isotherms and Streamlines. At the end, the obtained results are plotted and discussed after stability convergence test (SCT) by the using graphics software tecplot-9. An increases in the Grashof number is to increase the velocity distributions but by increasing the magnetic parameter which reduces the velocity profiles whereas increasing the heat generation parameter which increase the temperature profile.

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In this evaluation, a numerical exploration is inscribed on MHD unsteady heat and mass transfer of Casson nanofluid flow where variable thermal conductivity, radiation and heat absorption are counterfeited. The model is implemented for the nanofluid which annexes the impression of thermophoresis and Brownian motion. The governing models are metamorphosed as a dimensionless silhouette by the renovation rule of mathematics and the procured dimensionless couple of partial differential equations (PDEs) are elucidated by utilizing explicit finite difference method (EFDM). The numerical aggregates are enumerated for the miscellaneous dimensionless parameters on velocity, temperature and concentration profiles along with the skin friction, Nusselt number and Sherwood number with distinct time interims. ForTran programing language is manipulated as the predominated software for executing the numerical values. Also, by wielding the initial boundary conditions U=T=C=0, X=0.83 and Y=0.50 for =0.0005, convergence criteria are exhibited with Sc 0.18 and Le0.20. At the end, the prevailed culminations are illustrated and perused after the stability convergence test (SCT) by manoeuvring graphics software tecplot-9 and streamlines and isotherms are delineated.

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Fingerprint is becoming the part of our day to day life right from our home to workplace. Now a day for security and safety purpose prime importance is given by it. Also, Fingerprint identification is one of the most popular biometric technologies and which is highly used in criminal investigations, commercial applications, and so on. The performance of a fingerprint image-matching algorithm depends heavily on the quality of the input fingerprint images. It is very important to acquire good quality images to find out gender and blood group. The use of wavelet transform improves the quality of an image and reduces noise level. In this research, different compression techniques are used to overcome this problem. Initially, different finger prints have been collected among the students of Mathematics discipline of Khulna University. Then the fingerprints have been resized to 320*256 and saved in JPEG format. Then, we have used different wavelets transformation for compression of the fingerprint images. Image qualities before compression and after compression are measured by Mean Squared Error (MSE), Signalto-Noise Ratio (SNR) and Peak Signal-to-Noise Ratio (PSNR). After that the images has been pre-processing and transformed into binary images. Further, from this binary image, pixel calculation such that numbers of black and white pixels have been calculated. After that, some mathematical calculations have been done to identify the genders and blood groups. This work has been done by MATLAB programming.

Fingerprint is becoming the part of our day to day life right from our home to workplace. Now a days for security and safety purpose prime importance is given by it. Also, Fingerprint identification is one of the most popular biometric technologies and which is highly used in criminal investigations, commercial applications, and so on. The performance of a fingerprint image-matching algorithm depends heavily on the quality of the input fingerprint images. It is very important to acquire good quality images. The use of wavelet transform improves the quality of an image and reduces noise level. So, in this research, different compression techniques are used to overcome this problem. Also, we have used different wavelets transformation for compression of fingerprint images. Image quality before compression and after compression are measured by Mean Squared Error (MSE), Signal-to-Noise Ratio (SNR) and Peak Signal-to-Noise Ratio (PSNR). This work is done in MATLAB using DSP and wavelet toolbox. At last, we have compared the filtered noise image method and the compression filtered noise image method.

The aspiration of the mechanism is the impacts of radiation and mass transfer on the transient free convection flow of a dissipative fluid with the vertical Porous plate by taking into a consideration of the viscous dissipation. The governing equations for the one-dimensional model are solved with proper boundary conditions. The radiative heat transfer in the limit of the optically thick fluid is described. The momentum coupled equation with the energy and mass diffusion equations are solved by explicit finite difference method (EFDM). For Tran programming language is used as the main tool for calculating the simulating results. A parametric evaluation displaying the influence of distinct flow parameters on velocity profile, transient temperature and concentration are outlined graphically with the help of tecplot-9. Finally, a comparison of the present study with the previous study has been deliberated for different interesting parameters.