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Mohapatra S.K.,Siksha O' Anusandhan University | Pradhan M.,Gandhi Institute for Technological Advancement
IEEE International Conference on Computer Communication and Control, IC4 2015 | Year: 2015

Software testing is one of the important stages of software development. In software development, developers always depend on testing to reveal bugs. In the maintenance stage test suite size grow because of integration of new technique. Addition of new technique force to create new test case which increase the size of test suite. In regression testing new test case may be added to the test suite during the whole testing process. These additions of test cases create possibility of presence of redundant test cases. Due to limitation of time and resource, reduction techniques should be used to identify and remove them. Research shows that a subset of the test case in a suit may still satisfy all the test objectives which is called as representative set. Redundant test case increase the execution cost of the test suite, in spite of NP-completeness of the problem there are few good reduction techniques have been available. In this paper a new approach for test case reduction is proposed. This algorithm use genetic algorithm technique iteratively with varying chromosome length to reduce test case in a test suit by finding representative set of test cases that are fulfill the testing criteria. © 2015 IEEE. Source


Chattopadhyay S.,Indian National Institute of Engineering | Roy G.,Indian National Institute of Engineering | Panda M.,Gandhi Institute for Technological Advancement
Sensors and Transducers | Year: 2011

Feedback control system with PID Controller is an important technique that is widely used in the process industries. Their main advantage is that corrective action occurs as soon as the controlled variable deviates from the set point, regardless of the source and type of disturbance. Again if process conditions change, retuning the controller usually produces satisfactory control. The degree of convergence of the output waveform of PID controller is depending upon proper tuning of the controller. In this paper the control parameters (KP, KI, KD) of a PID controller are tuned to their optimum value. The controller algorithm is simulated by using LabVIEW (G language) software and usefulness of this controller for controlling different process variables is studied using proper tuning. The designed virtual instrument includes all the necessary components and facilities necessary for PID controller to function properly and to control any linear process. All the issues related to integral windup, derivative overrun, output signal limits and sampling interval Δt are well considered. The created Sub VI program may be used as a controller in a closed loop which is able to control a process. © 2011 IFSA. Source


Panda M.,Gandhi Institute for Technological Advancement
Sensors and Transducers | Year: 2011

The enormous growth of wireless sensor network (WSN) research has opined challenges about their ease in implementation and performance evaluation. Efficient swarm intelligence based routing protocols that can be used to obtain the application specific service guarantee are the key design issues in designing a WSN model. In this paper, an experimental testbed is designed with 100 sensor nodes deployed in a dense environment to address the scalability and performance issues of WSN. In this paper, we use Flooded Piggyback (FP) and SC-MCBR ant colony based routing along with AODV and MCBR Tree in order to design an efficient WSN model. Finally, simulation results are presented with various performance measures to understand the efficacy of the proposed WSN design. © 2011 IFSA. Source


Muduli N.,Gandhi Engineering College | Palai G.,Gandhi Institute for Technological Advancement | Tripathy S.K.,National Institute of Science and Technology
Optik | Year: 2014

The effect of ellipticity on birefringence in a hexagonal photonic crystal fiber having elliptical air holes with Kerr nonlinearity is investigated, with and without defect using finite difference time domain (FDTD) simulations. It is found that the birefringence increases with the increase of ellipticity. Further this analysis is extended to a double defect structure, where two adjacent air holes are omitted horizontally from the hexagonal structure. This double defect structure is found to have more birefringence than the structure without defect. It is raveled that birefringence due to no defect is more for lower value of ellipticity; however at higher value of ellipticity, birefringence due to double defect is more than the one that could be due to no defect. © 2014 Elsevier GmbH. All rights reserved. Source


Nayak S.K.,Centurion University of Technology and Management | Padhy S.K.,Siksha O' Anusandhan University | Panigrahi S.P.,Gandhi Institute for Technological Advancement
Future Generation Computer Systems | Year: 2012

This paper deals with the problem of dynamic task scheduling in grid environment of multi-processors. First, this paper formulates task scheduling as an optimization problem and then optimizes with a novel hybrid optimization algorithm. The proposed algorithm combines the merits of Genetic Algorithm and Bacteria Foraging optimization. The simulation result proves the superior performance with the proposed algorithm. © 2011 Elsevier B.V. All rights reserved. Source

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