Lakra A.V.,VSSUT Burla |
Kumar Yadav D.,Motilal Nehru National Institute of Technology
Procedia Computer Science | Year: 2015
In cloud computing datacentersexert server unification to enhance the efficiency of resources. Many Vms (virtual machine) are running on each datacenter to utilize the resources efficiently. Most of the time cloud resources are underutilized due to poor scheduling of task (or application) in datacenter. In this paper, we propose a multi-objective task scheduling algorithm formappingtasks to a Vms in order to improve the throughput of the datacenter and reduce the cost without violating the SLA (Service Level Agreement) for an application in cloud SaaS environment. The proposed algorithm provides an optimal scheduling method. Most of the algorithms schedule tasks based on single criteria (i.e execution time). But in cloud environment it is required to consider various criteria like execution time, cost, bandwidth of user etc. This algorithm is simulated using CloudSim simulator and the result shows better performance and improved throughput. © 2015 The Authors. Published by Elsevier B.V.
Sarangi S.K.,VSSUT Burla |
Chattopadhyay A.,Indian Institute of Technology Kharagpur |
Chattopadhyay A.K.,Indian Institute of Technology Kharagpur
International Journal of Refractory Metals and Hard Materials | Year: 2012
The synthesis of diamond at low pressure using Hot Filament Chemical Vapor Deposition (HFCVD) method has received significant attention in recent years for the unique characteristics of diamond. Among various input parameters, chamber pressure plays an important role in controlling nucleation, growth and morphology of coating. In this investigation, the morphology of diamond was analyzed after (1) pretreatment with acid, (2) pretreatment with acid and without diamond seeding and (3) pretreatment with acid and seeding. Keeping other input parameters constant the chamber pressure varied from low pressure (0.133 kPa) to high pressure (6.666 kPa). The variation of the crystal size with different input parameters were studied with Scanning Electron Microscope (SEM) micrographs and Raman spectroscopy. It was observed that cobalt inhibited diamond growth on the received carbide insert. Pretreatment with acid without seeding has improved diamond morphology. The pretreatment with acid and diamond powder seeding has improved diamond coating significantly. © 2011 Elsevier Ltd. All rights reserved.
Nayak T.,VSSUT Burla |
Swain R.R.,National Institute of Technology Rourkela
ACM International Conference Proceeding Series | Year: 2015
Automated control of mobile robot navigation is a challenging area in the field of robotics research. In this work, an attempt is made to use a new neural network training algorithm based on gravitational search (GS) and feed forward neural network (FFNN) for automatic robot navigation of wall following mobile robots. The GS strategy is used for setting the optimal weight set of the FFNN so as to increase the performance of the neural network. The algorithm is tested with three large datasets obtained from UCI machine learning repository, containing a sequence of sensor readings where sensors are arranged around the waist of the SCITOS G5 robot. The proposed method shows promising results for all the datasets. Copyright 2015 ACM.
Dwivedy B.,National Institute of Technology Rourkela |
Behera S.K.,National Institute of Technology Rourkela |
Mishra D.,VSSUT Burla
2015 International Conference on Microwave, Optical and Communication Engineering, ICMOCE 2015 | Year: 2015
A frequency reconfigurable antenna using two monopoles integrated on a single ground plane is proposed. One of the monopoles is loaded with ring shaped dielectric resonator for wide-band performance along with frequency agility. The antenna is excited by a switching network consisting of a low loss GaAs SPDT switch for independent operation at different frequencies of 4.53 GHz and 4.82 GHz. Different modes are excited in the DRA for switching conditions of the monopoles which result 23% and 29% of impedance bandwidth, confirming the bandwidth varying characteristic of the antenna. The antenna exhibits stable monopole type omnidirectional radiation pattern with realized gain varying from 1.1 dB-4.6 dB throughout the band which makes suitable for many C-band wireless applications. © 2015 IEEE.
Parida R.,Orissa Engineering College, Bhubaneswar |
Dash P.,VSSUT Burla
International Journal of Acoustics and Vibrations | Year: 2016
The dynamic stability of a circularly tapered rotating beam subjected to a pulsating axial external excitation with thermal gradient was studied for all possible combinations of clamped, guided, pinned, fixed, and free boundary conditions. The equations of motion and associated boundary conditions were obtained using the extended Hamilton's principle. Then these equations of motion and the associated boundary conditions were non-dimensionalised. A set of Hill's equations were obtained from the non-dimensional equations of motion by the application of the extended Galerkin method. The zones of parametric instability were obtained using Saito-Otomi conditions. The effects of various boundary conditions, thermal gradient, taper, and rotational speed on the regions of parametric instability were investigated and presented through a series of graphs. The results reveal that increasing rotational speed and taper have stabilizing effects, whereas increasing thermal gradient has a destabilizing effect for all boundary conditions of the beam.