bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of Power System Stabilizer using Flower Pollination Algorithm
Authors: Venkateswarlu S. , M Janaki , R Thirumalaivasan 
Published: April 2019

The Power System Stabilizer (PSS) is a controller which is used to mitigate the instability of Low Frequency Oscillations (LFOs) in power systems. The condition of oscillatory instability can also cause the loss of generator synchronism. It is observed that the damping provided by PSS depends on the proper selection of its parameters. This paper presents the systematic method for the selection of PSS parameters using evolutionary nature inspired optimization technique called Flower Pollination Algorithm (FPA). FPA is employed for selecting the optimal parameters of PSS so as to mitigate the low frequency oscillations of generator rotor and thereby oscillatory instability. The system consists of Single Machine with PSS which is connected to Infinite Bus (SMIB) through a transmission line. The transient simulation validates the performance of the system with optimized PSS. The results show that PSS with FPA optimized parameters provides fast and stable response.Â Â
Development of a Self-Coordinated Algorithm for Demand Side Management in the Case of Aggregated Electric Vehicle in a Grid Integrated System
Authors: Thomas Polly , Karthikeyan S Prabhakar 
Published: April 2019

Electric Vehicles (EV) are now a days proposed to serve the electric power grid bi-directionally by means of consuming energy from grid and also by injecting back the captive energy within the EV battery upon grid requirements. Thus EV and its known variants like Battery Electric Vehicles (BEV) and Plug-in Hybrid-Electric Vehicle (PHEV) possess unique rewards compared to the conventional fossil fueled vehicle. The increasing number of EVs integration with electricity network could have a significant knock on the performance and planning of a power system especially in the demand side management. The recent studies made by the National laboratory of U S Department of Energy clearly mentions the risks involved in EV integration in terms of its peak demand profile and spinning reserve profile. The work in this paper investigates the behavior of different types of EVs & its impact on the load profile in a grid connected system in terms of EV capacity, EV charging levels and EV penetration time. The charging profile thus obtained for the above different cases clearly conveys very significant and relevant information regarding its influence on the peak time demand. The peak time period is extended to late hours respective of the different charging conditions which has a definite impact of DSM. Also, an intelligent algorithm is developed to take care of the Demand Side Management (DSM) issues. For the same, the algorithm inputs the grid as well as the vehicle parameters. The uniqueness of the proposed algorithm is in its ability to avoid the communication complexities with the Independent System Operator (ISO) & aggregator.Â The work is done after studying relevant market models of EVs having different similar or different characteristics.Â
A Comparative Study for Condition Monitoring on Wind Turbine Blade using Vibration Signals through Statistical Features: a Lazy Learning Approach
Authors: Joshuva A. , Sugumaran V. 
Published: April 2019

This study is to identify whether the wind turbine blades are in good or faulty conditions. If faulty, then the objective to find which fault condition are the blades subjected to. The problem identification is carried out by machine learning approach using vibration signals through statistical features. In this study, a three bladed wind turbine was chosen and faults like blade cracks, hub-blade loose connection, blade bend, pitch angle twist and blade erosion were considered. Here, the study is carried out in three phases namely, feature extraction, feature selection and feature classification. In phase 1, the required statistical features are extracted from the vibration signals which obtained from the wind turbine through accelerometer. In phase 2, the most dominating or the relevant feature is selected from the extracted features using J48 decision tree algorithm. In phase 3, the selected features are classified using machine learning classifiers namely, K-star (KS), locally weighted learning (LWL), nearest neighbour (NN), k-nearest neighbours (kNN), instance based K-nearest using log and Gaussian weight kernels (IBKLG) and lazy Bayesian rules classifier (LBRC). The results were compared with respect to the classification accuracy and the computational time of the classifier.Â Â
Slip Velocity and Temperature Jump on Dissipative CASSON Fluid with CATTANEO-CHRISTOV Heat Flux Model: Spectral Relaxation Method
Authors: Gangadhar K. , V. Ramana K. , Kannan T. , Rushi Kumar B. 
Published: April 2019

A numerical analysis is performed for investigating the slip flow of a viscous dissipative Casson fluid towards a stretching sheet with Cattaneo-Christov heat flux and variable viscosity. The nonlinear partial differential equations are transformed with appropriate similarity variables into a system of nonlinear ordinary differential equations. Numerical solutions are carried out by using efficient Spectral relaxation method. Notable accuracy of the present results has been obtained with previous results in a limiting sense from the literature. It is found that thermal relaxation time has an inverse relationship with the fluid temperature. Interestingly, the fluid velocity is gradually decreasing with higher values of slip factor.Â Â Â
Construction of Reverse Super Edge Magic Total Graphs
Authors: Masthan Raju U. , Sharief Basha S. 
Published: April 2019

In this paper, we investigate the adjacency matrix ofÂ reverse super edge magic vertex graph and use this graph to construct other reverse super edge magic graphs with the same edge weight set. Additionally, by combining known reverse super edge magicÂ labelled graphs, we give a construction for a new reverse super edge magic graphÂ Â
Effect of Thermal Radiation on Heat Transfer of Ferrofluid Over a Stretching Cylinder with Convective Heating
Authors: Gangadhar K. , Keziya K. , Rushi Kumar B. 
Published: April 2019

In view of this we scrutinize the numerical solution using the Kellor box method for the natural differential equations which describes the MHD flow of ferrofluid over a stretching cylinder with thermal radiation and convective heating. Water as convectional base fluid containing nano particles of magnetite (Fe3O4) is taken up. Comparison between magnetite (Fe3O4) and non-magnatic (Al2O3) nanoparticles is also made. The relevant physical parameters appearing in velocity and temperature distributions are analyzed and examined with the help of Fig.s. To examine the correctness of the method an anology has been made with some earlier published results. It is noticed that by increase the strength of magnetic field, the percent difference in the heat transfer rate of magnetic nano particles with Al2O3 decrease. Further, convective heating and thermal radiation are highly influenced the temperature distribution of the ferrofluid.Â Â
Hashing based Hybrid Online Voting Using Amazon Web Services
Authors: S Murali , A Manimaran , K Selvakumar , Kumar S Dinesh 
Published: April 2019

The secured web-based voting framework is the need of the present time. We propose another secure authentication for the online voting framework by utilizing face recognition and hashing algorithm. A simple verification process is accomplished during the initial registration process via email and phone. The voter is asked to give a unique identification number (UIN) provided by the election authority and face image at the time of main registration. This UIN is converted into a secret key using the SHA algorithm. The face image that is saved in the Amazon web service (AWS) acts as an authentication mechanism which enables people to cast their vote secretly. The voters, who cast numerous votes amid the way toward voting is guaranteed to be counteracted by encrypted UIN.Â The election organizers can see the election parallelly as the voting is saved in the real-time database. The privacy of the voter is maintained as the details are converted into the key. In this system, an individual can vote from outside of his/her allocated constituency.Â Â
Intuitionistic Fuzzy Soft Hypergraph
Authors: Thilagavathi S. , . . 
Published: April 2019

In this paper the notions of intuitionisticÂ fuzzy soft hypergraph and strong intuitionisticÂ fuzzy soft hypergraph are introduced. Also studied about union of two intuitionisticÂ fuzzy soft hypergraphs with suitable examples..Â Â
Dominating Energy of Operations on Intuitionistic Fuzzy Graphs
Authors: Kalimulla A. , Vijayaragavan R. , Sharief Basha S. 
Published: April 2019

The concept of energy of an Intuitionistic Fuzzy Graph is extended to dominating Energy in operations on Intuitionistic Fuzzy Graph. In this paper, We have obtained the value of dominating Energy in different operations such as complement, Union, Join, Cartesian product and composition between two intuitionistic Fuzzy graphs. Also we study the relation between the dominating Energy in the operations on two Intuitionistic Fuzzy Graphs.Â Â
Soret and Dufor Effects on a Semi Infinite Inclined Plate
Authors: Palani G. , Desdemona Kirubavathi J. , Chandrasekaran E. 
Published: April 2019

A numerical technique is used to study a thermo-diffusion and diffusion-thermo effects on a two dimensional, laminar, unsteady convective flow past an inclined plate. The basic equations of the flow problem are non-linear, coupled and integro partial differential equations, these equations are transformed into a dimensionless form and solve it numerically using well known Crank-Nicolson implicit finite difference method. Thermo-diffusion and diffusion-thermo effects on velocity, temperature, concentration, shearing stress, rate of heat and mass transfer are studied in detail.Â Â
Oscillation Criteria for Generalized Second Kind Sublinear Delay Difference Equations
Authors: Benevatho Jaison A. , Khadar Babu SK. , Chandrasekar V. 
Published: April 2019

The Using Riccati transformation techniques, we present some new oscillation criteria for generalized second kind nonlinear difference equationÂ when Â is a quotient of odd positive integers,Â Â Â
Hungarian Algorithm using Haar Tuples to Solve Fuzzy Travelling Salesman Problem
Authors: Dhanasekar S. , Kumar Dash Saroj , Hariharan S. 
Published: April 2019

Travelling salesman problem(TSP) deals with visiting all the given cities and return back to the starting city with the minimum travelling distance or minimum travelling cost where each city is visited exactly once. The TSP problem is a special kind of an assignment model that excludes sub tours.Â In this paper we used Haar Hungarian algorithm approach [13] to solve a Fuzzy Travelling Salesman Problem (FTSP) and Numerical examples are given to validate the proposed algorithm.Â Â Â
Efficient Cloud Resource Scaling based on Prediction Approaches
Authors: Dinesh Kumar K , Umamaheswari E 
Published: April 2019

Resource Scaling is one of the important job in cloud environment while adapting resource configurations due to elasticity mechanism. In the view of cloud computing, resource scaling mechanism hold the assurance of QoS (Quality of Service), So, one of the key challenging task in cloud environment is, resource scaling. Effective scaling mechanism gives an optimal solutions for computational problems while achieving QoS and avoiding SLA (Service Level Agreement) violations. To enhance resource scaling mechanism in cloud environment, predicting future workload to the each application in different manners like number of physical machines, number of virtual machines, number of requests and resource utilization etc., is an essential step. According to the prediction results, resource scaling can be done in the right time, while preventing QoS dropping and SLA violations. To achieve efficient resource scaling, proposed approach lease advantages of fuzzy time series and machine learning algorithms. The proposed approach is able to reach effective resource scaling mechanism with better results.Â Â
A Study on Slope Number of Certain Classes of Bipartite Graphs
Authors: A. Antony mary A. , Amutha A. , S. Franklin Thamil Selvi M. 
Published: April 2019

Graph drawing is the most important area of mathematics and computer science which combines methods from geometric graph theory and information visualization. Generally, graphs are represented to explore some intellectual ideas. Graph drawing is the familiar concept of graph theory. It has many quality measures and one among them is the slope number. Slope number problem is an optimization problem and is NP-hard to determine the slope number of any arbitrary graph. In the present paper, the investigation on slope number of bipartite graph is studied elaborately. Since the bipartite graphs creates one of the most intensively investigated classes of graphs, we consider few classes of graphs and discussed structural behavior of such graphs.Â Â
Productivity Enhancement by Implementing Automatic Burr Cleaning Machine in Lathes
Authors: R Vishnu. , R Raagav. , R Karthik , A Thamaraiselvan. , S Palani. 
Published: April 2019

In the era of modernization and complete automation, industries employ manual cleaning operation which is highly time-consuming and man power requirements are high. To overcome this situation an automatic cleaning machine which can be employed to overcome the above stated obstacles by means of a completely automated cleaning system universally for different categories of machines based on the duties and classes of performance respectively.The main objective of this project is to develop a universal cleaning system which is used to completely clean the wastes which falls in between the machinery and at its collection spots such as hoppers, beds, plates, floors etc., where it cleans in all places where human hands cannot reach and cleaning operation considered not possible. The major advantage of machines are that they much more precise in doing the work than considered to a human or manual laborÂ Â
Hydrodynamic Assessment of a Dual-Rotor Horizontal Axis Marine Current Turbine
Authors: Avital EJ , Ai K , Venkatesan N , Samad A , Korakianitis T 
Published: April 2019

The hydrodynamic performance of a dual-rotor horizontal axis marine turbine (HAMCT) is investigated for the power gain in operating the rear rotor without blade-pitch control. This kind of turbine can be advantageous for a rectilinear tidal current of reversing directions, where each rotor blade is optimally fixed-pitched towards its upstream velocity. The blade element momentum (BEM) method is coupled with the Park wake model. A generic three-blade turbine is shown to gain up to 20% in the coefficient of power CP as relative to the front rotor CP when operating the rear rotor at the same tip speed ratio (TSR) as the front one, gaining overall CP up to 0.55. Analytic model is derived to backup the estimate of power gain. Plots for turbine performance variation with TSR and profile hydrodynamic efficiency are given, and analysed for lab and small-medium size turbines.Â Â
k-Zumkeller Labeling of Graphs
Authors: J. Balamurugan B. , Thirusangu K. , G. Thomas D. , J. Murali B. 
Published: April 2019

In this paper, we mainly focus on to prove that the graphs, viz., (i)paths, (ii) comb graphs, (iii) cycles, (iv) ladder graphs and (v) PnÂ´Pn graphs are k-Zumkeller graphs.Â Â
Study and Development of Graphical Authentication System for Secure File Transmission
Authors: L.P.Ramyasri P. , Malathi D. , D. Dorathi Jayaseeli J. , Senthilkumar K. 
Published: April 2019

The text-based password has been the most common practice from ancient days till present. Text based pass-words are also known for various threats, and it is prone to attacks like guessing attacks, dictionary attacks, social engineering attacks, brute force attacks, etc. The next immediate concept following the text based password is the graphical password schemes to improve password security and usability. In present days graphical passwords are being implemented more commonly. This approach is different from the traditional alpha numeric as it deals with images. In this paper a survey study is done to analyse various techniques used for authentication and also some of the methods for graphical authentication techniques like Pass Matrix, Cued Clicked points(CPP), CAPTCHA, Image distortion with text association, Doodle scheme, Standard recognition-based scheme, Stegno pin authentication method. Based on the existing methods, the future research can be done in order to improve security for graphical authentication.Â Â
Analysis of M/M/1 Queuing System with Customer Reneging During Server Vacations Subject To Server Breakdown and Delayed Repair
Authors: Swathi Ch. , Vasanta Kumar V. 
Published: April 2019

In this paper, we consider an M/M/1 queuing system with customer reneging for an unreliable sever. Customer reneging is assumed to occur due to the absence of the server during vacations.Â Detailed analysis for both single and multiple vacation models during different states of the server such as busy, breakdown and delayed repair periods is presented. Steady state probabilities for single and multiple vacation policies are obtained. Closed form expressions for various performance measures such as average number of customers in the system, proportion of customers served and reneged per unit time during single and multiple vacations are obtained.Â Â Â
The Energy Graph for Minimum Majority Domination
Authors: Jayasimman Paulraj , G Jenitha , A Kumaravel 
Published: April 2019

In this article we have introduced Minimum majority domination energy graph. A set Â is called a majority dominating set if at least half of the vertices either in or adjacent to the vertices . That is , . The minimum cardinality of a majority dominating set is called majority domination number . We defined majority dominating matrix and its energy values for some classes of graphs. Also some boundaries of Energy value of graph G are obtained.Â
Some Results on Generating Graceful Trees
Authors: Venkatesh S. , Balasubramanian K. 
Published: April 2019

Let Â and Â be any two simple graphs. Then Â is the graph obtained by merging a vertex of each copy of Â with every attachment vertices of . Let Â be the one vertex union of copies of the given caterpillar Â with the common vertex as one of the penultimate vertices. If Â is any caterpillar, then define . Recursively for , construct ,that is, Â Â Here the tree Â considered for attachment with Â is a caterpillar, but not necessarily the same among the levels. In this paper we prove that the tree Â is graceful forÂ
Inverse Connected and Disjoint Connected Domination Number of a Jump Graph
Authors: Jasmine.S.E Annie , Ameenal Bibi K. 
Published: April 2019

Let D be the minimum connected dominating set of a jump graph . If Â of Â contains a connected dominating set , then Â is called the inverse connected dominating set of the jump graph . The minimum cardinality of an inverse connected dominating set is the inverse connected domination number of the jump graph, denoted by. The disjoint connected domination number,Â of the jump graph , is the minimum cardinality of the union of two disjoint connected dominating set ofÂ . In this paper we have established bounds, exact values of and graph theoretic relations between the inverse connected domination number of the jump graph with other parameters of G.Â Â Â Â Â Â Â
Dufour-Soret Effects on 3D Convective Viscoelastic Fluid Flow Upon a Stretched Surface
Authors: Bhuvaneswari M. , Sivasankaran S. , Karthikeyan S. , Rajan S. 
Published: April 2019

The purpose of this analytical work is to investigate the Dufour-Soret effects on three dimensional unsteady boundary layer flows, mass and heat transfer of a viscoelastic fluid upon a stretched surface in the existence of internal heat generation/absorption. The equations governing the flow are converted using similarity variables into a set of non-linear ordinary differential equations. The series solution is obtained by homotopy analysis. The results are analyzed for the influences of the various pertinent constants involving in the study. The mass and heat transfer rates are calculated by the localized Sherwood and Nusselt numbers along the surface.Â Â
Brinkman Flow Generated by the Rectilinear Oscillations of an Oblate Spheroid Along its Axis of Symmetry
Authors: Kumar. D Satish , K. Vali S. 
Published: April 2019

In this paper, we consider an impervious Oblate spheroid placed in a fully saturated porous medium, where in the flow is governed by Brinkmann flow equation. WeÂ assume that theÂ spheroid is performing rectilinear harmonic oscillations along the axis of symmetry with a speed u.Â The flow is studied under the Stokesian approximation. The expressions for the velocity and pressure fields are obtained in terms of LegendreÂ functions,Â associated Legendre functions andÂ Radial and Angular spheroidal wave functions. We obtain an expression for the drag experienced by the spheroid, andÂ numerically study its variation with respect to the flow parameters and display its variationÂ through graphs.Â Â Â
Effect of Gravity Modulation on Single Component Convection in a Couple Stress Fluid with Maxwell-Cattaneo Law
Authors: Thomas Maria , George K Sangeetha 
Published: April 2019

The outset of convection in a thin layer of couple stress fluid is analyzed using the linear stability analysis when the fluid is heated from below. In order to assimilate the inertial effects Maxwell-Cattaneo law is used in lieu of the classical Fourier's heat conduction law. The normal mode analysis is used to arrive at the eigenvalues of the perturbed state and a regular perturbation method to find the analytical solutions. The effect of Cattaneo number, couple stress parameter and Prandtl number is discussed and it is concluded that gravity modulation can delay or advance the onset of convection.Â Â
Ohmic Heating Effect on Magneto Hydrodynamic Marangoni Mixed Convection Boundary Layer Nanofluid Flow
Authors: Srinivasu M. , R.V.S.R.K.Sastry Devulapalli , V.S.R.Deekshitulu G. 
Published: April 2019

In surface driven flows, dissipative layers which occur along the surface of two immiscible fluids are known as marangoni boundary layers. Mixed connection takes place when buoyancy forces act beside marangoni effect. Consider a nanofluid flow along a flat surface experiencing marangoni convection with ohmic dissipation and magnetic field. Copper and Alumina are the nanoparticles with water as base fluid. The similarity equations are solved numerically by BVP solver â€˜bcp4câ€. The flow characteristics are analyzed graphically and discussed.Â Â
Behavior of a Discrete Fractional Order SIR Epidemic Model
Authors: George Maria Selvam A. , Abraham Vianny D. 
Published: April 2019

In this paper we investigate the dynamical behavior of a SIR epidemic model of fractional order. Disease Free Equilibrium point, Endemic Equilibrium point and basic reproductive number are obtained. Time series plots, phase portraits and bifurcation diagrams are presented for suitable parameter values. Also some numerical examples are provided to illustrate the dynamics of the system.Â Â
Numerical Analysis of a Fractional Order Discrete Prey â€“ Predator System with Functional Response
Authors: George Maria Selvam A. , Janagaraj R. 
Published: April 2019

This study presents numerical examples of Discrete Fractional Order Prey Predator interactions with Functional Response. The process of discretization is applied and the version of discrete equations is obtained. Fixed points are determined and the stability around the fixed points is analyzed. Also the theoretical analysis has been verified from the numerical simulations, which help better understanding of the proposed system. Rich dynamics of system is exhibited by Bifurcation diagram and Periodic Oscillations for suitable parameters values.Â Â