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.

FinFET-Based-Miller-Encoder for UHF and SHF RFID-Application

Abstract: This paper proposes a T-flip-flop and a Miller encoder design for ultra-high frequency and super high frequency, radio-frequency identification (RFID) application using FinFETs. Miller encoder is u...

Performance and Comparative Analysis of Hybrid Controllers Implemented to Hybrid Energy Storage System of Electric Vehicles

Abstract: The main objective of this work is to propose a new control approach for a smooth transition between Battery and Ultracapacitor (UC) of Hybrid Energy Storage System (HESS) for Electric Vehicle (EV) application. The UC is used for peak power requirement and normal power requirement can be send by the battery and acts as a base source. Math Function Based (MFB) controller is designed by taking four individual math functions corresponding to the speed the motor. The designed MFB controller combined with Fuzzy logic/artificial neural network (ANN) controller procedures a new hybrid controller with that able to generate the control pulses to the converter, which may be unidirectional converter (UDC) or Bidirectional converter (BDC). Finally, entire circuit has been designed with two hybrid controllers and simulated in MATLAB/Simulink and performance analysis also made based on different factors, all measured values are presented, and which shows the controller action for different modes of the EV.

Intra and Inter-Species Communication in Microbes: Living with Complex and Sociable Neighbors

Abstract: Quorum sensing is a signaling mechanism wherein the microbes interact with each other through diverse chemical signals, known as auto inducers. Microbes not only synthesize, secrete, detect and respond to the chemical signals but also sense the signals that they do not synthesize in their immediate environment to discriminate their neighbors from others. Intra and inter-species communications between microbes surrounded by biofilm could be antagonistic, such as competition over nutrients and growth inhibition, or synergistic. These comprise the mixed biofilm development by co-aggregation; metabolic cooperation where one species utilizes a metabolite produced by its nearest species, along with augmented resistance to antibiotics or immune responses host. Interestingly bioluminescence, virulence factor expression, antimicrobial resistance, sporing and maturation of microbes also depend on mixed communications. These favourable interactions in mixed biofilms have important environmental, industrial and clinical connotations. The present review emphasizes the current knowledge relating to intra and species auto inducers and their role in activation of genes along with the receptors and signal molecules released by host cells.