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Sandhya N.,Gokaraju Rangaraju Institute of Engineering and Technology | Govardhan A.,JNTUH College of Engineering
Advances in Intelligent and Soft Computing | Year: 2012

Text Document Clustering aids in reorganizing the large collections of documents into a smaller number of manageable clusters. While several clustering methods and the associated similarity measures have been proposed in the past, the partition clustering algorithms are reported performing well on document clustering. Usually cosine function is used to measure the similarity between two documents in the criterion function, but it may not work well when the clusters are not well separated. Word meanings are better than word forms in terms of representing the topics of documents. Thus, here we have involved ontology into the text clustering algorithm. In this research WordNet based document representation is attempted by assigning each word a part-ofspeech (POS) tag and by enriching the 'bag-of-words' data representation with synset concept which corresponds to synonym set that is introduced by WordNet. After replacing the 'bag of words' with their respective Synset IDs a variant of K-Means algorithm is used for document clustering. Then we compare the three popular similarity measures (Cosine, Pearson Correlation Coefficient and extended Jaccard) in conjunction with different types of vector space representation (Term Frequency and Term Frequency-Inverse Document Frequency) of documents. © 2012 Springer-Verlag GmbH Berlin Heidelberg.

Vagdevi K.,Gokaraju Rangaraju Institute of Engineering and Technology | Radhika Devi V.R.,MLR Institute of Technology
Materials Today: Proceedings | Year: 2015

In the present work we study the electrical characteristics of graphene layer at various temperatures adsorbed with one beryllium. Negative differential conductance is observed which can be exploited for applications in analog electronics. It is observed that for 0. v and -1. v applied at 900k the negative differential conductance appears to increase. For -2. v the conductance starts from 300k. The negative differential conductance in graphene can be attributed to its intrinsic nonlinear carrier transport under a strong electric field. © 2015 Elsevier Ltd.

Kumar P.,Gokaraju Rangaraju Institute of Engineering and Technology | Singhal A.,University of Minnesota | Mehta S.,University of Minnesota | Mittal A.,Graphic Era University
Journal of Real-Time Image Processing | Year: 2016

Modern imaging sensors with higher megapixel resolution and frame rates are being increasingly used for wide-area video surveillance (VS). This has produced an accelerated demand for high-performance implementation of VS algorithms for real-time processing of high-resolution videos. The emergence of multi-core architectures and graphics processing units (GPUs) provides energy and cost-efficient platform to meet the real-time processing needs by extracting data level parallelism in such algorithms. However, the potential benefits of these architectures can only be realized by developing fine-grained parallelization strategies and algorithm innovation. This paper describes parallel implementation of video object detection algorithms like Gaussians mixture model (GMM) for background modelling, morphological operations for post-processing and connected component labelling (CCL) for blob labelling. Novel parallelization strategies and fine-grained optimization techniques are described for fully exploiting the computational capacity of CUDA cores on GPUs. Experimental results show parallel GPU implementation achieves significant speedups of ~250× for binary morphology, ~15× for GMM and ~2× for CCL when compared to sequential implementation running on Intel Xeon processor, resulting in processing of 22.3 frames per second for HD videos. © 2013, Springer-Verlag Berlin Heidelberg.

Rao L.B.,Gokaraju Rangaraju Institute of Engineering and Technology | Rao C.K.,Tirumala Engineering College
Mechanics Based Design of Structures and Machines | Year: 2011

This study deals with the exact buckling solutions of annular plates with an elastically restrained guided edge against translation. The classical plate theory is used to derive the governing differential equation for annular plate with elastically restrained guided edge against translation. The buckling mode may not be axisymmetric as previously assumed. In certain cases, an asymmetric mode would yield a lower buckling load. This is due to switching of mode. This work presents the critical buckling load parameters for axisymmetric and asymmetric buckling modes. Extensive data is tabulated so that pertinent conclusions can be arrived at on the influence of translational restraints, Poisson's ratio and other boundary conditions on the buckling of uniform isotropic annular plates. The numerical results obtained, are in good agreement with the previously published data. In this paper the characteristic equations are exact, therefore the results can be calculated to any accuracy. Comparison of studies demonstrates the accuracy and stability of this work. Copyright © Taylor & Francis Group, LLC.

Velide L.,Gokaraju Rangaraju Institute of Engineering and Technology
International Journal of Pharma and Bio Sciences | Year: 2013

Pebrinedisease found to be highly virulent and harm the larval and cocoon characters of tropical tasar silkworm Antheraeamylitta Drury (Daba TV).Therefore an attempt has been made to evaluate the effect of 2% bleaching powder solution in controlling the pebrine disease attained through secondary contamination by studying larval and cocoon characters. In comparison with the healthy control (T1 batch larvae reared on untreated plantation), the results reveal a significant decrease in larval span, larvalweight, number of cocoons harvested, effective rate of rearing, cocoonweight, shellweight, shellratio, filament length, reelability, weight of silkreeled, length of shell, width of shell, shell thickness, peduncle thickness, peduncle length, peduncle weight, peduncle diameter in T2 batch (infected larvae reared on untreated Terminaliaarjuna plants) but a slight decrease was observed in T3 batch (healthy and infected larvae reared combined on 2% bleaching powder solution treated plantation).The results also show that maximum mortality in T1 batch and T3 batch larvae was due to viral and bacterial infections and other factors rather than pebrine disease whereas in case of T2 batch nearly 50% of larval mortality was due to pebrinedisease. Based on the results obtained from present study 2% bleaching powder solution is found efficient in controlling pebrine disease attained through secondary contamination in Daba TV.

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