bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Multi-Scale Framework for Bias Field Estimation in MRI Brain Images
Authors: M George Maryjo , S Kalaivani 
Published: April 2019

Intensity inhomogeneity is an artifact in MR brain images and causes intensity variation of same tissues on the basis of location of the tissue within the image. It is crucial to minimize this phenomenon to improve the accuracy of the computer-aided diagnosis. Unlike the several methods proposed in the past to minimize intensity inhomogeneity, this proposed method uses a pyramidal decomposition strategy to estimate the bias field in MR brain images. The bias field estimated from the proposed multi-scale framework can be effectively used for intensity inhomogeneity correction of the acquired MR data. The proposed methodology has been tested on simulated database and quantitative analyses in terms of coefficient of variation in grey matter and white matter tissue regions separately and combined coefficient of joint variation are assessed. The qualitative and quantitative analyses on the corrected data indicate that the method is effective for intensity inhomogeneity on brain MR images.Â Â
Stability Enhancement of STATCOM using Flower Pollination Algorithm
Authors: Velpula Srikanth , R Thirumalaivasan , M Janaki 
Published: April 2019

The Static Synchronous Compensator (STATCOM) is a Voltage Source Converter (VSC) based shunt connected FACTS device. The key roles of STATCOM are to control the voltage at midpoint of transmission line, enhance power transfer capability and control reactive power at load end. However, the performance of STATCOM depends upon the parameters of the controller. In this paper, we present the tuning of Type-1 controller parameters for STATCOM based on a systematic method using Flower Pollination Algorithm (FPA). The margins for the Type-1 controller parameters are estimated from the movement of eigenvalues for the variation in controller parameters during inductive and capacitive modes of STATCOM. The performance of the STATCOM with FPA optimized Type-1 controller parameters is evaluated by transient simulation. The eigenvalue analysis and transient simulation are done based on D-Q model of STATCOM. It is noticed that, the response of STATCOM follows the step change in reactive current reference with least error.Â Â
Slip Flow of a Nanofluid Over a Stretching Cylinder with Cattaneo-Christov Flux Model: Using SRM
Authors: K Gangadhar , Ramana Venkata , Ramaiah Dasaradha , Rushi Kumar B. 
Published: April 2019

This article represents a numerical investigation of heat transfer and slip flow of a nanofluid over a stretching cylinder in magnetic field. In order to explore the heat transfer characteristics Cattaneo-Christov flux model is utilized in place of Fourierâ€™s law. By using, suitable transformations, the governingÂ Â partial differential equations are changed into non-linear ordinary differential equations.Â A numerical method, known as, spectral relaxation method is used to solve these equations. By using pictorial graphs, the relevant physical parameters that appear in temperature and velocity distributions are analytically discussed.Â Various types of nanoparticles like Alumina (Al2O3), Titanium oxide (TiO2), Copper (Cu) and Silver (Ag) with water as their base fluid has been assumed. It was identified that absolute value of skin friction coefficient and Nusselt number increases as each of nanoparticle volume fraction or Reynolds number increases. Temperature profile goes up in a faster way in Fourierâ€™s law case than Cattaneo-Christov heat flux model. It is also found that the choice of copper (for large values of nanoparticle volume fraction) and alumina (for small nanoparticle volume fraction) leads to highest cooling performance in solving this problem. In order to examine the accuracy of the method, thorough comparison has been made with some previous results.Â
Velocity Slip and Thermal Jump on Maxwell Fluid with Non-Fourier Cattaneo-Christov Heat Flux Using SRM Solutions
Authors: Gangadhar K. , V. Ramana K. , Rushi Kumar B. 
Published: April 2019

The influence of the heat transfer within a boundary layer flow and magneto hydro dynamic slip flow of a Maxwell fluid over a stretching cylinder is analyzed and discussed in the present article. The effects of viscous dissipation and thermal jump are assumed. The procedure of heat transfer through hypothesis of Cattaneo-Christov heat flux is considered. We converted non-linear partial differential equations for mass, momentum and energy into a system of coupled highly non linear ordinary differential equations with proper boundary conditions by the help of suitable similarity transformations. The succeeding ordinary differential equations are solved by using Spectral relaxation technique. The solution is obtained in zero curvature parameter as well as non-zero curvature parameter.Â i.e. for flow above a flat plate and flow above a cylinder. The flow and heat transfer attributes are witnessed to be encouraged in an elaborate mode by Prandtl number, thermal jump parameter, thermal relaxation parameter, Deborah number, slip velocity parameter, Eckert number and the magnetic parameter. Our findings reveal that one of the possible ways to decrease the Deborah number by boosting fluid velocity. It is also perceived that in the case of flow over a stretching cylinder, the momentum boundary layer thickness and the velocity of the fluid increases. Furthermore, an increase in slip velocity factor reduces the magnitude of skin friction.Â Â
High Performance of Solar Cooker by Heat Transfer Mode Condition System Using Fuzzy Logic Controller Applications
Authors: S Bhavani , S Shanmugan. , P Selvaraju 
Published: April 2019

In this work has been made to predict the effect of several parameters on the productivity to a system by expending fuzzy set technique. A solar cooker has been developed low cost and critically high efficiency produce in Vel Tech Multitech Engineering College at Chennai, Tamilnadu, India. Dissects in thermal performance of cooking system have been produced heat transfer follow in fuzzy logic techniques (Low, Medium, and High). The thermal effect of factor should be developed in fuzzy logic for the system. They should have groups of heat transfer produced in fuzzy logic controller for solar cooker system which had been implemented of system performance discussed. It is to study have induced to give the shortly time for the enhancement of the box solar cooker production.Â Â
A New Approach to Common Coupled Fixed Point of Caristi Type Contraction on a Metric Space Endowed with a Graph
Authors: Adilakshmi G. , N.V.Kishore G. , Konda Reddy N. 
Published: April 2019

In this paper we introduced a new notation G â€“ fg â€“Â Â contraction of Caristi type and a new edge preserving property. With help of these we proved a some coupled fixed point results for four maps endowed with a graph in a complete metric space. Also we gave an application to integral equations.Â
K-Graceful, Odd-Even Graceful, Heronian Mean and Analytic Mean Labeling for the Extended Duplicate Graph of Kite Graph
Authors: Anitha K. , Selvam B. , Thirusangu K. 
Published: April 2019

In this paper, we investigate the extended duplicateÂ graph ofÂ kite graph KI3,m admits K-graceful, Odd-Even graceful, Heronian mean and Analytic mean labeling.Â Â
Neighborhood Connected Two -Outdegree Equitable Domination of the Ï‘-Obrazom Graphs of P_n,G_n and H_n
Authors: Ameenal Bibi K. , Rajakumari P. 
Published: April 2019

Let G=(V,E) be a connected graph. A two-outdegree equitable dominating set D of a graph G is called the neighborhood connected two-outdegree equitable dominating set (nc2oe-set) if the induced sub graph <N(D)> is connected. The minimum cardinality of the minimal neighborhood connected two-outdegree equitable dominating set is called neighborhood connected two-outdegree equitable domination number of G and is denoted by . In this paper, we initiated the a study of this parameter and obtained Â for the -obrazom graphs of Â and . Also, we investigated the two-outdegree equitable domination number of the -obrazom graphs ofÂ and .Â Â
Optimizing Milk Run and Use of Bin-Packing in Waste Collection Problems
Authors: Prasad S. , V. Kureethara J. 
Published: April 2019

This paper uses the concepts of milk runs as well as bin packing in order to optimize collection and reduce cost. Using the concept of â€œmilk runâ€ and an approach of time minimization, we can optimize the number of trucks and other vehicles used for picking and transporting waste. The objective function involves cost of transportation and is linked to distance travelled to dispose wastes. The constraints are those of vehicle capacity. The profile of different types of trucks obtained from milk run is used to compute number of trucks as well as to allot them to different trips.Â Â
Bounds of Laplacian Energy of a Hypercube Graph
Authors: Ameenal Bibi K. , Vijayalakshmi B. , Jothilakshmi R. 
Published: April 2019

LetÂ Qn denoteÂ the n â€“ dimensionalÂ hypercubeÂ withÂ orderÂ Â 2n andÂ size n2n-1. TheÂ LaplacianÂ LÂ is definedÂ byÂ L = D Â where D isÂ theÂ degreeÂ matrix andÂ A isÂ theÂ adjacencyÂ matrixÂ withÂ zeroÂ diagonalÂ entries.Â TheÂ LaplacianÂ is aÂ symmetricÂ positiveÂ semidefinite.Â LetÂ Âµ1 â‰¥ Âµ2 â‰¥ ....Âµn-1 â‰¥ Âµn = 0 be the eigen values ofÂ the Laplacian matrix.Â TheÂ LaplacianÂ energy is defined asÂ LE(G) = . InÂ thisÂ paper, weÂ definedÂ LaplacianÂ energyÂ ofÂ aÂ HypercubeÂ graphÂ andÂ also attainedÂ theÂ lowerÂ bounds.Â Â Â
3D- flow of a Electrically Conducting and Dissipating Maxwell fluid treated with Ohmic Heating Convective boundary condition: Numerical Analysis
Authors: Malliswari B. , Sreenivasulu P. , Poornima T. , Bhaskar Reddy N. 
Published: April 2019

An analysis is made to study the effects of radiation, dissipation, Thermo-diffuso and Diffuso- thermo on MHD 3D Maxwell flow past a stretching permeable sheet with resistive heating. Transforming the governing dimensional boundary layer equations using three dimensional similarity transformations and then the resultant equations are numerically solved by employing Shooting method.Â The effect of the pertinent parameters on various flow distributions is elaborately discussed with the help of graphs and tables. The comparison of present results with the existing literature gave an excellent agreement for the reduced cases.Â Â
Rotating Hydromagnetic Two-Fluid Convective Flow and Temperature Distribution in an Inclined Channel
Authors: Sri Ramachandra Murty P. , Balaji Prakash G. , Karuna Sree Ch. 
Published: April 2019

Magnetohydrodynamic convective two-fluid flow and temperature distribution between two inclined parallel plates in which one fluid being electrically non-conducting and the other fluid is electrically conducting is studied. A constant magnetic field is applied normal to the flow. The system is rotated about y-axis with an angular velocity â€˜Wâ€™.Â Perturbation method is used to obtain solutions for primary velocity, secondary velocity and temperature distribution by assuming that the fluids in the two regions are incompressible, laminar, steady Â and Â fully Â developed. Â Increasing Â values Â of Â rotation Â is Â to Â reduce Â temperature Â distribution Â and Â primary Â velocity where as thesecondary velocity increases for smaller rotation, while for larger rotation it decreases.Â
Mathematical Model for Traffic Flow
Authors: C Keerthika , Greeshma Narahari , Vyshnavi Priya , Kumar Reddy Vyshnavi , Indhira K. , M. Chandrasekaran V. 
Published: April 2019

Every year countless hours are lost in traffic jams. When the density of traffic is sufficiently high small disturbances in vehicleâ€™s accelerations can cause phantom traffic jams. We can relate the traffic flow to mathematics and physics like that of liquids and gases. This paper presents mathematical model for phantom jams and Gauss Jordan elimination for traffic flow.Â Â
Stability Analysis and Optimization of Wind Energy Conversion System Using Extremum Seeking Output Feedback Controller for Dynamic Wind Speed Variations
Authors: B.Hemanth Kumar M. , Saravanan B. 
Published: April 2019

Stability of power systems is an important aspect for interconnecting different renewable energy sources into the existing electrical network. The concern over environmental effects due to conventional power plant made the researchers to implement many solutions for introducing renewable energy due to their intermittent nature. When the wind energy conversion system is introduced into the grid thereâ€™s need of voltage and frequency control for maintaining reactive power demand and also many issues from the consumer end and also it must satisfy the grid standards. As the wind is dynamic in nature there are issues like stability, load imbalance, power quality and other issues. In this paper, a non-linear feedback controller is introduced based on field-oriented control (FOC) approach and simulated in MATLAB environment. The designed controller is tested for wind data for examining the stability and power coefficient for the wind turbine. This controller also achieves fast transient response for rapid changes in the wind profile.Â Â
A Big Data Solution to Detect Conditional Functional Dependency Violations
Authors: Somasekhar G. , Karthikeyan K. 
Published: April 2019

The violation detection of conditional functional dependencies in distributed environment has been a research problem giving inspiration to many researchers recently. A very few solutions were given in the recent past to handle conditional functional dependencies. Unfortunately, these are inappropriate in real time big data applications. This article mainly focuses on the big data solution to such type of problems. The proposed IMRCFDHBD algorithm reduces elapsed time and provides scalability with minimum data shipment. The result proves that the algorithm outperforms the state-of-the-art techniques in the big data scenarios.Â Â
A Discourse on the Estimation of Nonlinear Regression Model
Authors: Mahaboob B. , Venkateswarlu B. , Ravi Sankar J. , Peter Praveen J. , Narayana C. 
Published: April 2019

The present study evaluates an estimation for regression model which are nonlinear with Goldfeld, Quandt and exponential structure for heteroscedastic errors. An IENLGLS (Iterative Estimated Nonlinear Generalised Least Squares) estimator based on Goldfeld and Quandt for parametric vector has been derived in this research article. VolkanÂ Â Soner Ozsoy e.t.al [1], in their paper, proposed an effective approach based on the particle Swarm Optimisation (PSO) algorithm in order to enhance the accuracy in the estimation of parameters of nonlinear regression model. Ting Zhang et.al [2], in their article, established an asymptotic theory for estimates of the time-varying regression functions. Felix Chan et.al [3], in their paper, proposed some principals which are sufficient for asymptotic normality and consistency of the MLH estimatorÂ
Kth Root Transformation for a subclass of Log-Sigmoid Analytic Function based on Quasi-Subordination
Authors: Hari Priya M. , Bharavi Sharma R. , Suman Kumar V. 
Published: April 2019

In the present investigation, using the concept of quasi-subordination, two subclasses of analytic functions have been introduced. The coefficient inequalities, the Fekete-Szego inequality, upper bounds for kth root transformation were studied. This study is extended to function and for .
Optimal Placement of Fuzzy based UPQC Topologies with Distributed Generation for Power Quality Enhancement in IEEE 14 Bus System
Authors: R. Sukhesh H. , Vadivu U. Senthil , Karthikey Prabhakar , . . 
Published: April 2019

An Unified Power Quality Conditioner (UPQC), is a combination of shunt and series Active Power Filter (APF), has become a standard accepted solution in the area of current and voltage harmonics mitigation of a power system network. This paper furnishes a comparative analysis of the power quality enhancement and optimization in positioning for three different VSI based UPQC system configurations namely: 3P3W UPQC topology, 3P4W UPQC based on 2C shunt inverter topology and 3P4W UPQC based on 4L shunt inverter topology, all supported with the Fuzzy Logic Controller (FLC), placed at different locations in a standard IEEE 14 bus system. Simulation results using MATLAB/SIMULINK provides the optimal position of UPQC for mitigating the harmonic issues in the standard IEEE 14 bus system.Â Â
Analysis of Contract Farming Partnership for Sustainable Supply of Tobacco (a Case Study on the Integrated Production System Program of PT. HM Sampoerna Tbk. - Indonesia)
Authors: DS Susilowati Kartika , Rachmi Asminah , Indah Riwajanti Nur 
Published: April 2019

This study explored the implementation of the integrated production system program established by PT. HM Sampoerna Tbk Indonesia, a leading Indonesian tobacco company, and examined its potential and constraints. The program was intended to develop cooperation between the company and its tobacco suppliers to get a sustainable supply of tobacco from farmers with quantity, quality and price set according to the companyâ€™s standards. This study employed an interpretive research design, following a post-positivist paradigm. The data were collected by means of in-depth interviews, observation and document study and were analyzed using the key tenet of Martin Heideggerâ€™s interpretive phenomenology. The interpretive process was achieved through hermeneutic circle to understand how individuals involved in the program interpreted the program including their own experiences as well as their interactions with other parties. The results of the study indicated that the created contract farming partnership was capable of providing the company with a sustainable supply of tobacco and increasing its production volume. Nevertheless, it was unable to improve the quality of the farmersâ€™ lives as it was chiefly intended to meet the companyâ€™s commercial needs. The results from the study have direct relevance to policy makers in Indonesia, especially those that have been implemented contract farming and to agribusiness companies seeking contractual relationships for commodity production.Â Â Â
The Impact of Information Technology Capability on Supply Chain Technology Adoption and Supply Chain Operational Performance: a Resource based View
Authors: Khai Loon Lee , Nawanir Gusman , Hanaysha Jalal , Abu Bakar Zahari 
Published: April 2019

Organization increasingly relies on the supply chain technology to improve the supply chain operational performance. Yet, past evidence suggests that the adoption of supply chain technology does not guarantee enhanced supply chain operational performance. Drawing from the Resource Based View, this study found that information technology (IT) capability enabled supply chain technology adoption in achieving supply chain operational performance. Supply chain technology serves as a system in transforming IT capability into a higher value resources for an organization. The adoption of supply chain technology in managing supply chain deserved attention from researchers and practitioners, because business benefits from supply chain technology adoption improve firmâ€™s supply chain performances which enhance reliability, improve responsiveness, increase agility, and minimize cost in operation functions. This study provides a unique theoretical framework intended to aid researchers and practitioners develop a more thorough understanding of the linkages between information technology capability, supply chain technology adoption, and supply chain operational performance. The total of 201 questionnaires were sent to Malaysia's textile and apparel company that is listed in the Federation of Malaysian Manufacturers (FMM) and Malaysian External Trade Development Corporation (MATRADE) directory. The total of 121 usable responses were obtained and analyzed through Partial Least Square Structural Equation Modeling (PLS-SEM). The discussion of this study is followed by presenting the results of the survey on the relationship of IT capability on supply chain technology adoption and supply chain operational performance. The results shown that supply chain technology adoption is mediating the relationship between IT capability and supply chain operation performance.Â Â
Computer Games as Learning Tool towards Children Road Safety Education
Authors: Hussin Masnida , Hanis Mohd Fouzi Nor 
Published: April 2019

Road safety awareness is one of the many awareness programs that are often highlighted and discussed around the world. The road accident statistics are increased due to the lack of exposure and awareness among communities about traffic environments and rules. Children are one of the most vulnerable populations involved in traffic accidents. The children are unable to familiarize themselves with the surroundings, especially when crossing the road. This research attempts to improve road-safety awareness among children by using computer games as a learning tool. Specifically, it determines the progress of knowledge on the road rules and conditions after the children using the tool. The computer online game is suitable methods to use for teaching them on road safety due to interactive application always intimate the children. Besides the survey questions that related to road traffic rules, we also measures the attitude towards road safety in the participant (i.e., children and adult). Descriptive analysis in frequency, mean, and percentage are used to describe the respondentâ€™s information. Statistical Package for Social Science (SPSS) is used to analyze the findings. The overall findings show that all respondents have positive feedback on online games as a road safety tool. Interestingly, the significant output shows on the different knowledge about road safety when the children are analyzed for before and after they played the games. The future research is suggested to study the other group of participant as the respondent in this work is limited to the primary school children. It can be improved by involving the large sample size and wider location.Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
Refusal of Youth to Vote in Shah Alam, Selangor, Malaysia
Authors: Ramlan Mohd Arshad Mohd , Mohd Salleh Norhayati , . . 
Published: April 2019

The involvement of youth in todayâ€™s politic will influence the future state of Malaysia. The aim of this research is to study on the antecedents that make youth refuse to vote in Shah Alam. The respondents for this research are the youth whom registered as voter for Shah Alam Parliamentary seat. The main objective of this study is to determine the most significance factor that affected their voting behavior. The respondent of this study was 150 youth voters. Purposive sampling technique have been used with questionnaire as the instruments for collecting data. In determining the relationship between the voting refusal behaviors, Correlation Analysis and Regression Analysis were used. Based on the findings, ignorant is the main antecedent of youth refusal to vote in election. Hence, the government, political parties Election Commission of Malaysia and all beneficiaries must work together to ensure our youth exposed to political system and encourage them to involve in selecting the leaders.Â Â Â