Vignan University

About: Vignan University is a education organization based out in Guntur, Andhra Pradesh, India. It is known for research contribution in the topics: Control theory & CMOS. The organization has 1138 authors who have published 1381 publications receiving 7798 citations.

An optimal mode selection algorithm for scalable video coding

Abstract: Scalable video coding (SVC) is extended from its predecessor advanced video coding (AVC) because of its flexible transmission to all type of gadgets. However, SVC is more flexible and scalable than AVC, but it is more complex in determining the computations than AVC. The traditional full search method in the standard H.264 SVC consumes more encoding time for computation. This complexity in computation need to be reduced and many fast mode decision (FMD) algorithms were developed, but many fail to balance in all the three measures such as peak signal to noise ratio (PSNR), encoding time and bit rate. In this paper, the proposed optimal mode selection algorithm based on the orientation of pixels achieves better time saving, good PSNR and coding efficiency. The proposed algorithm is compared with the standard H.264 JSVM reference software and found to be 57.44% time saving, 0.43 dB increments in PSNR and 0.23% compression in bit rate.

Development and characterization of 1,1-bis(3-methyl-4-hydroxyphenyl) cyclohexane-based benzoxazine and cyanate ester hybrid polymer matrices: Thermal and morphological properties:

Abstract: 1,1-Bis(3-methyl-4-hydroxyphenyl)cyclohexane-based benzoxazine monomer and 1,1-bis(3-methyl-4-cyanatophenyl)cyclohexane were blended together via in situ polymerization. The chemical blending of be...

POSS nanoparticles: Synthesis, characterization, and properties

Abstract: Polyhedral oligomeric silsesquioxane (POSS) hybrid nanoparticles have been considered as one of the most favorable nano-reinforcements in the field of high-performance advanced hybrid composites used for high-tech applications. Therefore, researchers around the world have devoted more attention to study its well-defined multifunctional nanostructure, amenable functionalization, hybrid nature, and ease of processability. The introduction of POSS into polymer matrices enhances their thermal, mechanical, thermo-mechanical, dielectric, and morphological properties and also improves resistance to moisture, corrosion, oxidation, UV, and microbial organisms of resulting polymer nanocomposites. In this chapter, we describe the synthesis, characterization, and properties of various POSS nanoparticles including nonreactive, monofunctional, bifunctional, and multifunctional POSS derivatives.