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Bharadwaj V.P.,Maharaja Institute of Technology | Rao M.,Maharaja Institute of Technology
2016 IEEE International Conference on Distributed Computing, VLSI, Electrical Circuits and Robotics, DISCOVER 2016 - Proceedings | Year: 2016

The exploitation of parallelism at both the multiprocessor or multicore level and at the instruction level is the means to achieve high-performance. The compiler for VLIW and superscalar processors must expose sufficient parallelism to effectively utilize the parallel hardware. The amount of instruction level parallelism available to VLIW processors or superscalar processors can be limited. This will limit the performance of these processors to a certain extent. However, with compiler optimization techniques, its performance can be increased to greater extent. This evaluation shows that utilizing the existing resources of the processor with certain programmer constraints and an efficient scheduling of independent and dependent blocks of instructions, we can increase the performance of the processors. As compiler optimization interact with the micro-architecture in complex ways, certain programmer constraints can be added to reduce the complexity and help the compiler to structure the Assembly code in a manner which can be used for out-of-order execution of the code. This paper provides new methods and improvements for the structure of the Assembly code for execution on superscalar processors. © 2016 IEEE.


Subudhi P.K.,Maharaja Institute of Technology | Palo S.,Kalam Institute of Technology | Sahu T.,Berhampur University
Superlattices and Microstructures | Year: 2012

We analyze the strain induced changes in the low temperature multisubband electron mobility mediated through the intersubband interactions in a pseudomorphic GaAs/In xGa 1-xAs coupled double quantum well structure. We consider the non-phonon scattering mechanisms and study the effect of strain on them. We show that strain reduces the mobility due to ionized impurity (imp-) scattering μ imp but enhances the mobility due to interface roughness (IR-) scattering μ IR. For alloy disorder (AL-) scattering as long as the lowest subband is occupied, the effect of strain enhances the mobility μ AL. However, once the second subband is occupied, there is almost no change, rather decrease in μ AL for larger well widths. It is gratifying to note that for single subband occupancy, the effect of strain enhances the total mobility μ. On the other hand, for double subband occupancy, initially there is almost no change, but with increase in well width the total mobility reduces. We vary the In composition x from 0.15 to 0.2 and 0.25 and the barrier width between the two wells to analyze their effects on the mobility which shows interesting results. Our study of multisubband mobility can be utilized for the low temperature device applications. © 2012 Elsevier Ltd. All rights reserved.


Sharath Kumar Y.H.,Maharaja Institute of Technology | Vinutha V.,Maharaja Institute of Technology
Advances in Intelligent Systems and Computing | Year: 2016

In this work, we propose two novel approaches to classify sign images based on their skeletons. In the first approach, the distance features are extracted from the endpoints and junction points remarked on the skeleton. The extracted features are aggregated by the use of interval-valued type data and are saved in the knowledge base. A symbolic classifier has been used for the purpose of classification. In second approach, the concept of spatial topology is combined with the symbolic approach for classifying the sign gesture skeletons. From the end points and junction points of skeletons, triangles are generated using Delaunay Triangulation; and for each triangle, features like lengths of each side and angles are extracted. These extracted features of each skeleton of signs are clumped and represented in the form of interval-value type data. A suitable symbolic classifier is designed for the purpose of classification. Experiments are conducted on our own real dataset to evaluate the performance of two approaches. The experimental results disclose the success of the proposed classification approach. © Springer India 2016.


Dayal V.,Maharaja Institute of Technology | Kumar P.V.,Maharaja Institute of Technology
Solid State Communications | Year: 2013

The electrical conductivity and magnetoresistance property of the bulk sample La0.67 Ca0.33Mn0.99Fe0.01O3 has been reported, between the magnetic fields 0 and 5 T and in temperature range 10-300 K. Ferromagnetic metallic resistivity ρFM(T)= ρ0+ρ1Tn is observed well below the metal insulator (MI) transition temperature TTMI the electrical conductivity is dominated by the Shklovskii-Efros variable-range hopping mechanism (SE-VRH), giving ρPM(T)= ρohexp[(Tρ0/T) 1/2]. Based on the scenario that the doped manganites consists of phase separated ferromagnetic metallic and paramagnetic insulating regions, a good fit of ρ(T) is well described by combining the contribution of ρFM(T) and ρPM(T) by the single expression between the temperature region 33 and 300 K. Above TMI the ρ(T) also gives satisfactory fit and is well described using the small polaronic model (SPC) and Mott's VRH. At T≥TMI, a critical behavior of ρ(T) obeys the scaling law ρ-1(T)∼(1-(T/TMI))v. Investigations of magnetoresistance (MR) using magnetic field up to 5 T shows two kinds of contribution: one is intrinsic MR and the other is extrinsic MR, which has been accounted fairly well by a phenomenological model based on spin polarized tunneling. © 2012 Elsevier Ltd.


Sharath Kumar Y.H.,Maharaja Institute of Technology | Pavithra N.,Maharaja Institute of Technology
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2015

In this work, we developed a model for representation and indexing of objects for given input query sketch. In some applications, where the database is supposed to be very large, the retrieval process typically has an unacceptably long response time. A solution to speed up the retrieval process is to design an indexing model prior to retrieval. In this work, we study the suitability of Kd-tree indexing mechanism for sketch based retrieval system based on shape descriptors like Scale invariant feature transform(SIFT), Histogram of Gradients (HOG), Edge orientation histograms (EOH) and Shape context (SC). To corroborate the efficacy of the proposed method, an experiment was conducted on Caltech-101 dataset. And we collected about 200 sketches from 20 users. Experimental results reveal that indexing prior to identification is faster than conventional identification method. © Springer International Publishing Switzerland 2015.


Srinivasa A.H.,Maharaja Institute of Technology | Eswara A.T.,P.A. College
International Journal of Heat and Mass Transfer | Year: 2013

This paper deals with unsteady free convection flow of an incompressible fluid about an isothermal truncated cone with variable viscosity and Prandtl number. The non-linear coupled partial differential equations governing the flow and heat transfer have been solved numerically, by using an efficient implicit finite-difference scheme along with quasilinearization technique. The nonsimilar solutions have been obtained for the problem, overcoming numerical difficulties near the leading edge and in the downstream regime for the whole transient from the initial unsteady-state flow to the final steady state flow, for different Prandtl number fluids. Also, an analytical solution is obtained for transient heat transfer at the leading edge of the truncated cone, valid for small times and found to be in good agreement with numerical solution. Numerical results indicate that skin friction as well as heat transfer are strongly affected by the viscosity-variation parameter and temperature dependent Prandtl number. Further, skin friction is found to decrease along the surface of the cone whereas heat transfer rate increases due to unsteadiness in the flow. It is observed that there is a smooth transition from the small time solution (initial unsteady flow) to the large time solution (final steady-state flow). The time taken to reach steady state is found to increase with increasing of Prandtl number. © 2012 Elsevier Ltd. All rights reserved.


Rakshith K.,Maharaja Institute of Technology | Rao M.,Maharaja Institute of Technology
Proceedings of the 2016 IEEE International Conference on Wireless Communications, Signal Processing and Networking, WiSPNET 2016 | Year: 2016

Device-to-Device communication underlaying cellular networks will become breakthrough innovation in future cellular networks such as LTE and LTE Advanced. Device-to-Device communication allows devices to communicate with each other without using the cellular infrastructure and reduces the load on the network. This can be achieved by using several approaches, one of them being use of built in Wi-Fi, we have developed such an application which is highlighted here. The application is implemented in real time to exchange information between devices. This paper also focuses on the research on the concepts of direct device communication along with the possible scenarios the devices can communicate. Finally the paper concludes by presenting the results and discusses the future enhancements. © 2016 IEEE.


Dayal V.,Maharaja Institute of Technology | Punith Kumar V.,Maharaja Institute of Technology
Journal of Magnetism and Magnetic Materials | Year: 2014

We present here the results of a comprehensive study of the DC magnetization, linear and nonlinear AC susceptibility, DC resistivity and Magnetotransport behavior of the La0.8Bi0.2MnO3 polycrystalline manganite to understand its complex magnetic nature. The sample under study is synthesized by a conventional solid state route and is found to crystallize in rhombohedral structure having R3̄c group. A significant irreversibility between zero-field-cooled and field-cooled magnetization data with a broad peak in ZFC is clearly observed. Temperature variation of first and third order AC susceptibilities is in good agreement with Wohlfarth×. ©2014 Elsevier B.V. All rights reserved.


Mishra S.R.,Siksha ‘O’ Anusandhan University | Pattnaik P.K.,Maharaja Institute of Technology | Dash G.C.,Siksha ‘O’ Anusandhan University
Alexandria Engineering Journal | Year: 2015

An attempt has been made to study a steady planar flow of an electrically conducting incompressible viscous fluid on a vertical plate with variable wall temperature and concentration in a doubly stratified micropolar fluid in the presence of a transverse magnetic field. The novelty of the present study is to account for the effect of a spanwise variable volumetric heat source in a thermal and solutal stratified medium. The coupled non-linear governing equations are solved numerically by using Runge-Kutta fourth order with shooting technique. The flow characteristics in boundary layers along with bounding surface are presented and analyzed with the help of graphs. © 2015 Faculty of Engineering, Alexandria University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.


Geetha Kiran A.,Malnad College of Engineering | Murali S.,Maharaja Institute of Technology
21st International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision, WSCG 2013 - Poster Proceedings | Year: 2013

Image based video generation paradigms have recently emerged as an interesting problem in the field of robotics. This paper focuses on the problem of automatic video generation of indoor scenes that mainly consist of orthogonal planes. The algorithm infers frontier information directly from the images using a geometric context-based segmentation scheme that uses the natural scene structure in indoor environments. The presence of floor is a major cue for obtaining the termination point for the video generation. First, we perform floor segmentation using dilation and erosion methods. Second, compute the length of the floor using distance method which is used as the termination point for video generation. Finally, video is generated by cropping the image. Our approach needs no human interventions, hence it is fully automatic. We demonstrate the technique to a variety of applications, including virtual walk through ancient time images, in forensics and in architectural sites. The algorithm is tested on nearly 100 images obtained from different buildings, all of them are fairly different in interior decoration themes from each other.

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