Thapar University

About: Thapar University is a education organization based out in Patiāla, Punjab, India. It is known for research contribution in the topics: Cloud computing & Fuzzy logic. The organization has 2944 authors who have published 8558 publications receiving 130392 citations.

Managing Data in Healthcare Information Systems: Many Models, One Solution

Abstract: Because healthcare data comes from multiple, vastly different sources, databases must adopt a range of models to process and store it. A polyglot-persistent framework combines relational, graph, and document data models to accommodate information variety.

Dielectric behaviour of the composite system: multiwall carbon nanotubes dispersed in ferroelectric liquid crystal

Abstract: Ferroelectric liquid crystal–multiwall carbon nanotube (FLC-MWCNTs) composite systems have been prepared by dispersing low (0.03 and 0.10 wt.%) concentration of MWCNTs in the liquid crystal matrix. Relaxation behaviours of pure and composite systems have been investigated. Thermo-optic studies infer a small shift (∼5 K) in the clearing temperature of the dispersed systems. Dielectric measurements reveal that the MWCNTs influenced the permittivity. The relaxation time, relaxation frequency and dielectric strength have been evaluated and discussed. The influence of MWCNTs concentration on the conductivity of composite systems has been investigated.

Magnetorheological methods for nanofinishing – a review

Abstract: The functional requirement of the components as well as safety and aesthetic compulsion make it necessary to improve the surface characteristics before putting it into the useful applications. Therefore, it is important to achieve superior surface finish very close to dimensional precision. Also, 3D components are being found more useful in today’s industries which lead to an increased demand for nanofinishing. This article mainly emphasizes on the analysis of magnetorheological methods suited for finishing of various surfaces. The surface is mainly finished by the abrasives hold within carbonyl iron particles chains in magnetorheological fluid during operation. The traditional finishing methods are comparatively less valuable in case of 3D surface finish due to lack of better controllable finishing force and constraint in tool movement. Magnetorheological methods were found to have better control over the forces and more flexibility in tool movement over various types of surfaces. Recently, a new...

A RGB image encryption technique using Lorenz and Rossler chaotic system on DNA sequences

Abstract: In this paper, a robust color image encryption system using Lorenz-Rossler chaotic map is proposed. The proposed encryption system uses hybrid of two chaotic systems namely Lorenz and Rossler to generate the random sequence. These generated sequences are used for encryption of red, green and blue channels of color image. Rules of DNA cryptosystem are used to encode the plain image in proposed approach. Cross channel operation is proposed to increase randomness in plain image. The proposed encryption approach is tested over different well-known images that are taken from USC-SIPI image dataset. Its performance is compared with recently developed eight image encryption techniques. The experimental results reveal that the proposed approach performs better than the existing techniques in terms of correlation coefficient. The security analyses such as statistical analysis and key sensitivity analysis are performed to validate the security of proposed encryption approach. The key space of proposed approach is large enough to resist against brute force attacks.