Optical and Magnetic Properties of Titanium dioxide Nanoparticles Physical Properties of 2-amino-5-nitropyridinium p-phenolsulfonate (2A5NPP) Single Crystal for Nonlinear Optical Applications Adaptive Technique for Secure Data Transmission to Improving the Cyber Security Some Coupled Fixed Point Theorems for Mixed Monotone Mappings Using P-Metric Space Personnel Authentication Using Multi Modal Biometrics Complemented by Cognitive Skills