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Cochin, India

Idicula S.M.,CUSAT
2015 International Conference on Computing and Network Communications, CoCoNet 2015 | Year: 2015

Plagiarism is a serious problem in the present day scenario. The easy availability of information of all sorts over the web is the major reason. This paper presents a detection system based on fingerprinting for identifying copy in Malayalam text-based documents. The challenge in identifying plagiarism in Malayalam documents is due to the intricate linguistic composition of Malayalam. Malayalam is agglutinative as well as morphologically rich language. In this paper, a procedure for plagiarism detection of Malayalam documents to identify similarity between documents is presented. This method establishes the extent of similarity between any two documents. The winnowing algorithm is used to compute the fingerprints at sentence level. The method improves the search time with more accuracy in the detection process. © 2015 IEEE. Source

Annals of GIS | Year: 2013

Visualization of geospatial entities generally adopts digital elevation models (DEMs) that are interpolated to establish 3D co-ordinates for the entire terrain. The accuracy of the generated terrain models depends on the type of interpolation mechanism adopted. Generally available methods in this context use point data values and their distribution; however, terrain characteristics such as shape are not generally considered in the interpolation. We propose an adaptive interpolation strategy that considers the terrain features for improving the estimation accuracy. In this research, we have compared the proposed approach with different contemporary interpolation techniques, such as inverse distance weighting, kriging (KRG), nearest neighbour and spline methods. Comparative analysis of the proposed technique with contemporary approaches revealed that considerable success has been achieved with the procedure. Investigations have also been done to analyse the sensitivity of the approach to terrain smoothness. © 2013 Taylor & Francis Group. Source

Forest Science and Technology | Year: 2014

Remote sensing satellite images are effectively used as a tool for decision making in various fields, especially in forest management and related analyses. Different geospatial parameters are required for effective decision making and the possibility of an integrated framework for automation of various analyses has been investigated. Advanced web mining and intelligent techniques have been adopted for the development of a comprehensive open-source framework for this purpose. The effectiveness of the developed methodology has been discussed and illustrated with reference to study areas using various statistical parameters. Adoption of a cellular neural network (CNN) for feature modeling and open-source data for automatic mining seemed to be effective. The developed methodologies were found to outperform existing ones with regard to accuracy and complexity. Investigations revealed that use of CNN is very effective in shape modeling, and improves accuracy of detection. © 2014 © 2014 Korean Forest Society. Source

Sunilkumar M.,National Institute of Technology Calicut | Francis T.,St. Josephs College | Thachil E.T.,CUSAT | Sujith A.,National Institute of Technology Calicut
Chemical Engineering Journal | Year: 2012

In recent years, there has been a marked increase in the interest in biodegradable polymer materials for the use in packaging, agriculture, medicine, and other areas. Biodegradable composite films has been fabricated, via peroxide initiated melt-compounding process, by blending low density polyethylene (LDPE) and chitosan, in a rotor disperser. Chitosan, maleic anhydride (MA), dicumyl peroxides (DCP) and oleic acid constituent in palm oil have been used as biodegradable filler, coupling agent, free radical initiator and Lewis acid catalyst, respectively. The palm oil serves the additional function of a plasticizer as indicated by the mechanical property studies. The hydrophilicity, thermal, biodegradablity and dielectric properties of the biocomposite system have also been investigated. Biodegradability of the samples has been studied by inoculating the films with Aspergillus niger (A. niger) on a potato dextrose agar media and incubated at surrounding temperature (25 °C) for 21. days. After incubation, the films were again subjected to morphological and tensile studies. Hydrophilicity and biodegradation rate has been found to increase with increase in chitosan loading in the matrix. The plasticized samples showed better biodegradablity rate and hydrophilicity compared to the unplasticized ones. The addition of palm oil retains the thermal stability of the present biocomposite film. Chitosan and palm oil hybrid reinforced LDPE has proved to be a novel combination with increased biodegradable rate of LDPE. The improved dielectric property of the composite has also enhanced the antibacterial properties. The tailor-made biodegradable plastic film proves to be eco-friendly alternatives to synthetic plastics and have invoked potential applications in food-packaging, bio-separations and drug delivery. © 2012 Elsevier B.V. Source

Silija P.,National University of Malaysia | Yaakob Z.,National University of Malaysia | Yarmo M.A.,National University of Malaysia | Sugunan S.,CUSAT | Binitha N.N.,Sree Neelakanta Government Sanskrit College Pattambi
Journal of Sol-Gel Science and Technology | Year: 2011

The photocatalytic activity of carbon and nitrogen co-doped sol gel TiO2 is tested using methyleneblue degradation and it is found that the activity drops sharply with increase in calcination temperature. The system calcined at 300 °C was found to be the most efficient in dye degradation and can be considered as a good candidate for the future photocatalytic applications. This highly active anion doped TiO2 is found to show amorphous nature. Elemental analysis reveals the co existence of C and N dopants, which may be responsible for the high efficiency of the catalyst. Visible absorbance is evident from the UV-VIS Diffuse Reflectance Spectra. The N2 adsorption desorption studies show the H1 hysteresis loops and a well defined mesoporous nature is observed for the catalytic systems prepared in the presence of urea. XPS analysis indicates the presence of Ti-C and Ti-N bonds which are responsible for the visible light activity of the photocatalysts. © 2011 Springer Science+Business Media, LLC. Source

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