Malnad College of Engineering
Hassan, India

Malnad College of Engineering is an engineering college located in Hassan, Karnataka, India. It was established in 1960, during the second 5 year plan of India, as a joint venture between the Government of India, Government of Karnataka and the Malnad Technical Education Society, Hassan. The institution is affiliated with the Viswesvaraya Technological University in Belgaum.The college is built on a campus of about 44 acres and is a technical education center. The college has earned the ISTE Award as one of the best engineering colleges in the country, in 2007. Wikipedia.

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Gururaj H.L.,Malnad College of Engineering | Ramesh B.,Malnad College of Engineering
2016 IEEE Annual India Conference, INDICON 2016 | Year: 2016

Tactical networks is a heterogeneous network which facilitates information sharing and data exchange among military tactical force units. The tactical communication depends on factors such as network characteristics, communication media resources, operational mobility, terrain etc. The key challenge is to address typical military communication network constraints such as limited bandwidth and latency, narrow effective communication range, intermittent communication links. Performance of the transport layer protocols is heavily affect by some of the link level impairments like high loss rates, long & variable delays and intermittent. Any random packet loss in the network is considered as congestion by TCP in the network and in order to overcome this congestion and packet-loss TCP employs the congestion control algorithm resulting in poor bandwidth usage of already scarce bandwidth. Similar for the intermittency the transport protocol must detect intermittencies and quickly adjust to intermittent paths it carry mission-critical data in military networks. Heterogeneous communication link (starting from High Frequencies or Very High Frequencies radio sets to satellite links) between sources to destination results is long and variable delays. The interaction of these long delays with the standard TCP slow-start and congestion-avoidance algorithms will damage the TCP performance. A critical survey has been done on various TCP variants to find out which is the best suitable protocol (and variants) under varying impairments for tactical networks. © 2016 IEEE.

Vijaya P.A.,Malnad College of Engineering
International Journal of Computer Science and Applications | Year: 2010

In a multi script environment, majority of the documents may contain text information printed in more than one script/language. For automatic processing of such documents through Optical Character Recognition (OCR), it is necessary to identify different script regions of the document. In this paper, it is proposed to develop a model to identify the script type of a trilingual document printed in Kannada, Hindi and English scripts. The distinct characteristic features of Kannada, Hindi and English scripts are thoroughly studied from the nature of the top and bottom profiles. The proposed model is trained to learn thoroughly the distinct features of each script. Experimentation conducted involved 1500 text lines for learning and 1500 text lines for testing. The k-nearest neighbor classifier is used to classify the test sample. The results are encouraging and prove the efficacy of the proposed model. The average success rate is found to be 99.5% for data set constructed from scanned document images. © Technomathematics Research Foundation.

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.

Maruthi G.S.,Smt. L.V. Government Polytechnic | Hegde V.,Malnad College of Engineering
2013 IEEE 1st International Conference on Condition Assessment Techniques in Electrical Systems, IEEE CATCON 2013 - Proceedings | Year: 2013

Air gap eccentricity fault existing in the induction motor may be of the form static or dynamic or together known as mixed eccentricity. Due to this, an unbalanced magnetic pull (UMP) will be setup between stator and rotor. This can cause bearing damage, rubbing of rotor with stator and may develop unwanted vibration and noise, which may results in premature failure of the motor. In this context, this paper presents the mathematical analysis of unbalanced magnetic pull due to air gap eccentricity in induction motor. Experimental investigations have been carried out to detect mixed airgap eccentricity fault by vibration signature analysis using Micro-Electro-Mechanical Systems (MEMS) accelerometer under different operating conditions. The spectral analysis of motor vibration has been carried out using radix-2 decimation in time Fast Fourier Transform algorithm (DIT-FFT). The presence of side band harmonic frequencies around fundamental component in the motor vibration signal spectrum indicates mixed eccentricity fault. The experimental results demonstrate that it is possible to identify the mixed airgap eccentricity fault by vibration signature analysis using MEMS accelerometer. A simple method has been proposed to find the fault severity in the motor under variable load conditions due to mixed air gap eccentricity © 2013 IEEE.

Hebbale A.M.,NMAM Institute of Technology | S S.M.,Malnad College of Engineering
Materials Today: Proceedings | Year: 2015

In the present work microwave cladding technique was progressed for enhancement of surface properties of high speed steel (SS-304). The experiments were conducted in domestic microwave oven with the help of Al2O3 shield. The clad of thickness, approximately 1mm was developed by microwave exposure at frequency 2.45GHz. The entire setup was exposed to microwave environment for about 1080s. The developed clads were characterized using FE-SEM, EDS, XRD and measurement of Vicker's microhardness. Microstructural study reveals that there is a metallurgical bond with SS-304 substrate & partial diffusion of constituent elements. Chromium was observed segregated around the cell boundaries while iron and nickel were identified inside the cells. © 2015 Elsevier Ltd.

Panduranga H.T.,University of Mysore | Naveen Kumar S.K.,University of Mysore | Kiran,Malnad College of Engineering
European Physical Journal: Special Topics | Year: 2014

In this paper we presented a image encryption based on permutation-substitution using chaotic map and Latin square image cipher. The proposed method consists of permutation and substitution process. In permutation process, plain image is permuted according to chaotic sequence generated using chaotic map. In substitution process, based on secrete key of 256 bit generate a Latin Square Image Cipher (LSIC) and this LSIC is used as key image and perform XOR operation between permuted image and key image. The proposed method can applied to any plain image with unequal width and height as well and also resist statistical attack, differential attack. Experiments carried out for different images of different sizes. The proposed method possesses large key space to resist brute force attack. © 2014 EDP Sciences and Springer.

Vishwanath H.,Malnad College of Engineering | Maruthi G.S.,Smt. L V Government Polytechnic
Energy Procedia | Year: 2012

The contents of this paper reports an experimental investigation carried out to detect the air gap eccentricity faults under varying load conditions using non-invasive transducers to monitor the current and vibration signals as a diagnostic medium. Experimental results of vibration signature analysis using Micro-Electro-Mechanical Systems (MEMS) accelerometer and Motor Current Signature Analysis (MCSA) using Hall Effect current transducers are compared and found nearly common signatures. Spectral analysis is carried out using decimation in time Fast Fourier Transform algorithm using FFT analyzer. This study also examines the usefulness of vibration signature analysis using MEMS to detect the eccentricity faults in developing a compact, miniaturized and cost effective instrument. © 2011 Published by Elsevier Ltd.

Shashidhara Y.M.,Malnad College of Engineering | Jayaram S.R.,Malnad College of Engineering
Tribology International | Year: 2010

A review is made here to understand the application of vegetable oils as potential metal working fluids. The study highlights the contributions from more than sixty authors on vegetable based oils as emerging environmental friendly cutting fluids. The performance of these oils as emulsions and straight oils for various materials and machining conditions are reported. The study focuses on the evolution of vegetable oils as cutting fluids in manufacturing sector, particularly, metal cutting and metal forming. It is observed that, most of the contributions are directed to develop and commercialise the cutting fluids based on vegetable oils. However, soyabean, sunflower and rapeseed seem to possess the relevant properties as a potential cutting fluid. © 2009 Elsevier Ltd. All rights reserved.

Partha M.K.,Malnad College of Engineering
Applied Mathematics and Mechanics (English Edition) | Year: 2010

In this paper, the natural convection in a non-Darcy porous medium is studied using a temperature-concentration-dependent density relation. The effect of the two parameters responsible for the nonlinear convection is analyzed for different values of the inertial parameter, dispersion parameters, Rayleigh number, Lewis number, Soret number, and Dufour number. In the aiding buoyancy, the tangential velocity increases steeply with an increase in the nonlinear temperature parameter and the nonlinear concentration parameter when the inertial effect is zero. However, when the inertial effect is non-zero, the effect of the nonlinear temperature parameter and the nonlinear concentration parameter on the tangential velocity is marginal. The concentration distribution varies appreciably and spreads in different ranges for different values of the double dispersion parameters, the inertial effect parameter, and also for the parameters which control the nonlinear temperature and the nonlinear concentration. Heat and mass transfer varies extensively with an increase in the nonlinear temperature parameter and the nonlinear concentration parameter depending on Dacry and non-Darcy porous media. The variation in heat and mass transfer when all the effects, i.e., the inertial effect, double dispersion effects, and Soret and Dufour effects, are simultaneously zero and non-zero. The combined effects of the nonlinear temperature parameter, the nonlinear concentration parameter and buoyancy are analyzed. The effect of the nonlinear temperature parameter and the nonlinear concentration parameter and also the cross diffusion effects on heat and mass transfer are observed to be more in Darcy porous media compared with those in non-Darcy porous media. In the opposing buoyancy, the effect of the temperature parameter is to increase the heat and mass transfer rate, whereas that of the concentration parameter is to decrease. © Shanghai University and Springer-Verlag Berlin Heidelberg 2010.

Shashidhara Y.M.,Malnad College of Engineering | Jayaram S.R.,Malnad College of Engineering
Advances in Tribology | Year: 2012

The friction and wear tests on AISI 1040 are carried out under raw, modified versions of two nonedible vegetable oils Pongam (Pongamia pinnata) and Jatropha (Jatropha curcas) and also commercially available mineral oil using a pin-on-disc tribometer for various sliding distances and loads. A significant drop in friction and wear for AISI 1040 is observed under Pongam and Jatropha raw oil compared to mineral oil, for the complete tested sliding distance and load, increasing the potential of vegetable oil for tribological applications. Stribeck curves are also drawn to understand the regimes of lubrication. Both the vegetable oils showed a clear reduction in the boundary lubrication regimes, leading to an early start of full film lubrication. © 2012 Y. M. Shashidhara and S. R. Jayaram.

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