Bhīmavaram, India
Bhīmavaram, India

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Sablok G.,Research and Innovation Center | Mudunuri S.B.,Vishnu Institute of Technology | Patnana S.,International Institute of Information Technology, Hyderabad | Popova M.,Plovdiv University | And 3 more authors.
DNA Research | Year: 2013

Microsatellites or simple sequence repeats (SSRs) are repetitive stretches of nucleotides (A, T, G, C) that are distributed either as single base pair stretches or as a combination of two- to six-nucleotides units that are non-randomly distributed within coding and in non-coding regions of the genome. ChloroMitoSSRDB is a complete curated web-oriented relational database of perfect and imperfect repeats in organelle genomes. The present version of the database contains perfect and imperfect SSRs of 2161 organelle genomes (1982 mitochondrial and 179 chloroplast genomes). We detected a total of 5838 chloroplast perfect SSRs, 37 297 chloroplast imperfect SSRs, 5898 mitochondrial perfect SSRs and 50 355 mitochondrial imperfect SSRs across these genomes. The repeats have been further hyperlinked to the annotated gene regions (coding or non-coding) and a link to the corresponding gene record in National Center for Biotechnology Information(www.ncbi.nlm.nih.gov/) to identify and understand the positional relationship of the repetitive tracts. ChloroMitoSSRDB is connected to a user-friendly web interface that provides useful information associated with the location of the repeats (coding and non-coding), size of repeat, motif and length polymorphism, etc. ChloroMitoSSRDB will serve as a repository for developing functional markers for molecular phylogenetics, estimating molecular variation across species. Database URL: ChloroMitoSSRDB can be accessed as an open source repository at www.mcr.org.in/chloromitossrdb. © The Author 2012.


Hima Bindu K.,Vishnu Institute of Technology | Raghavendra Rao C.,Telangana University
Advances in Intelligent Systems and Computing | Year: 2015

This paper considers a decision system with a fuzzy decision attribute (with finite set of values) to account for uncertainty. A novel fuzzy classification approach using a class of decision trees is developed. A decision tree is constructed for each decision category using Coefficient of Variation Gain as the attribute selection measure. A metric based on Residual Sum of Squares (RSS) to compare the fuzzy classifier is presented. The methodology of constructing the classifier and its performance aspects are presented. © Springer International Publishing Switzerland 2015.


Padmavathy N.,Vishnu Institute of Technology | Chaturvedi S.K.,Indian Institute of Technology Kharagpur
International Journal of Performability Engineering | Year: 2016

Several researches on reliability studies of ad hoc network, assumed that the communication links between any two mobile nodes exist if the Euclidean distance between them is not greater than the transmission range of the nodes. These methods are purely distance-dependent models and the randomness in the signal strength in radio communication is not taken care-off. This way of modeling the channel for reliability studies may be intuitively a valid theoretical study. However, the wireless channel can be modeled in a more realistic manner by considering the randomness caused due to shadowing effects. In this paper, we characterize the connectivity of the MANET in a log-normal shadow fading environment. The simulated results are of practical significance for the design of MANET and offers insights into how the channel randomness has been considered for the MANET reliability evaluation through Monte Carlo Simulation approach to depict the impact of shadowing deviation. © Totem Publisher, Inc.


Radhika T.S.L.,Vishnu Institute of Technology | Iyengar T.K.V.,National Institute of Technology Warangal
Proceedings of the International MultiConference of Engineers and Computer Scientists 2010, IMECS 2010 | Year: 2010

The present paper deals with the problem of the Stokes flow of a couple stress fluid past a porous spheroidal shell consisting of a pair of con focal spheroids S0 and S1 where S0 is within S 1. The region within S0 is filled with couple stress fluid, the annular region between S0 and S1 is assumed to be porous and the same couple stress fluid as that within S0 flows with a uniform velocity in the free region (i.e) outside S1. The problem is formulated using the V.K. Stokes' equation describing the flow outside the shell as well as the flow inside the shell while an analogue of the classical Darcy law in the theory of porous media is used within the shell region. Under Stokesian approximation, the solution is then, sought analytically and the expressions for the flow field variables are obtained in terms of Legendre functions, associated Legendre functions, radial prolate spheroidal wave functions and angular prolate spheroidal wave functions. The stresses acting on the shell are estimated and the drag experienced by the body is obtained. Numerical study is undertaken to study the effect of the permeability of the medium, couple stress parameter and the geometric parameter on the drag and the results are presented using graphs. It is found that, for a fixed S 0 as the eccentricity of the outer spheroid increases, the drag decreases.


Padmavathy N.,Vishnu Institute of Technology | Chaturvedi S.K.,Indian Institute of Technology Kharagpur
Procedia Computer Science | Year: 2015

A Monte Carlo Simulation based evaluation of mobile ad hoc network reliability is proposed which considers different mobility models along with the effect of different scenario metrics and different values of tuning parameter. Through our approach we show that the mobility considerations have no significant impact on reliability as the same results are obtained by just implicitly simulating the node locations. Considering no mobility models reduces computational burden, number of random variables involved making the algorithm more efficient is the added advantage. A comparative study of the results of the network reliability estimate considering with and without mobility is provided. © 2015 The Authors.


Babu A.G.S.,Vishnu Institute of Technology | Chiranjeevi B.T.,NIT Silichar
IFAC-PapersOnLine | Year: 2016

In recent years, the research and studies on fractional order (FO) modelling of dynamic systems and controllers are quite advancing. To improve the stability and dynamic response of automatic voltage regulator (AVR) system, we presented fractional Order PID (FOPID) controller by employing Genetic Algorithm (GA) and Ant Colony Optimization (ACO) techniques. We designed a masked fractional order PID block in Matlab to implement the PIλDμ controller for any type of system in simulink. Comparisons are made with a PID controller from standpoints of transient response and robustness characteristics. It is shown that the proposed FOPID controller can improve the performance of the AVR in all the aspects. © 2016, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.


Babu G.S.,Vishnu Institute of Technology | Dinesh K.,Vishnu Institute of Technology
2015 International Conference on Energy, Power and Environment: Towards Sustainable Growth, ICEPE 2015 | Year: 2015

In recent years, the research and studies on fractional order (FO) modeling of dynamic systems and controllers are quite advancing. To improve the stability and dynamic response of automatic voltage regulator (AVR) system, we presented fractional Order PID (FOPID) controller by employing Genetic Algorithm (GA) and Ant Colony Optimization (ACO) techniques. We designed a masked fractional order PID block in Matlab to implement the PIλDμ controller for any type of system in Simulink. Comparisons are made with a PID controller from standpoints of transient response and robustness characteristics. It is shown that the proposed FOPID controller can improve the performance of the AVR in all the aspects. © 2015 IEEE.


Satyanarayana G.,University of Hyderabad | Lakshmi Ganesh K.,Vishnu Institute of Technology
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2015

The Classical PI controllers have been imperatively preferred for the control action of the active compensators in a power distribution system. However, the performance of these controllers is affected greatly by varying parameters and uncertainties in modeling and also high stability issues. In other side fuzzy logic based PI controllers have more robust and accurate appearance. The main intention of this work is to analyze and implementation of an adaptive intelligent controller for DSTATCOM for the expedited in-phase vectorial formulation template with mamdani fuzzy structure. The in-phase de-opposition of the current wave injected by the compensator is able to enhancing power quality features at PCC level. The efficient performance of robust adaptive fuzzy algorithm for the PI gain values are to be controlled by the operation of DSTATCOM. It enforce the non-adaptive control actions in terms of expressive dynamic response, inferior steady state error and achieve good stability with the appreciate dynamic behavior of adaptive intelligent type DSTATCOM under Matlab/Simulink tool. © Springer International Publishing Switzerland 2015.


Satyanarayana G.,University of Hyderabad | Lakshmi Ganesh K.,Vishnu Institute of Technology
Lecture Notes in Electrical Engineering | Year: 2015

Presently, (RES) Renewable Energy Systems are getting more widely preferred with accumulate of energy demand and concern for the environmental impact around the world. The Hybrid Generation Scheme (HGS) exerts fuel cell (FC) and photovoltaic (PV) sources are themain energy generation sources. Integration of hybrid generation system to grid has favorable advantages and integrated with the help of DC/ DCconverter because ofmaintains dc link voltage as a constant and interfacing to grid by using invertermodel. Basic need of multilevel inverters has gained more attention in the area of distribution of energy and control due to its advantages in high power applications with lowharmonics and also good quality of output voltage.This paper proposes a threephase Asymmetrical Multilevel Inverter (AMLI) is more suitable converter for hybrid generation scheme, and also compared to the formal multilevel inverter contains need more switches for getting higher voltage levels, gate drive circuit and area of the requirement reduces. The ProposingAMLI produces 7–15V levels by using 9 switches for this more levels THD goes to reduces. The proposed scheme is comprehensively evaluated with improved performance of AMLI using Matlab/Simulink Package. © Springer India 2015.


Yasmeena,Vishnu Institute of Technology | Das G.T.R.,Jawaharlal Nehru Technological University
IEEE International Conference on Circuit, Power and Computing Technologies, ICCPCT 2015 | Year: 2015

This paper presents the structural and operational comparison of line commutated converter (LCC), voltage source converter (VSC) and Modular Multi level converter(MMC) for High voltage applications and also presents the simulation model of modular multilevel converter (MMC) which is one of the most promising converter topologies for highvoltage applications, especially for high-voltage direct-current (HVDC) transmission systems. The converter is characterized by a modular arm structure, formed by a cascaded connection of a large number of simple chopper cells with floating DC capacitors. These cells are called Sub-Modules (SM) and can be easily assembled into a converter for high-voltage or mediumvoltage power conversion systems. A control scheme also presented for voltage balancing control and a leg total voltage control in order to achieve a stable behavior in all operating conditions. The validity and the effectiveness of the voltage control strategy are confirmed by numerical simulations. Simulations are done by using MATLAB/Simulink software. © 2015 IEEE.

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