3 articles for “S. Periyasamy”

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Research ArticleOpen accessIn the author namesA MODIFIED ADAPTIVE WAVELET SHRINKAGE SPECKLE FILTER FOR ULTRASOUND IMAGESNirmaladevi Periyasamy, Asokan RamasamyThe usage of ultrasound imaging for medical diagnosis is limited due to the presence of speckle noise. In this study Modified Adaptive Wavelet Shrinkage Filter (MAWSF) in the translational invariant domain is proposed for the removal of speckle noise. The adaptive wavelet threshold function removes the fixed bias of soft thresholding. A new inter-scale dependency model is proposed, to perform … …Journal of Computer Science, Vol. 9, Issue 10 · 16 Sep 2013 · 6,541 accessesView PDF Cite

Research ArticleOpen accessIn the author namesA Proficient Traceback Approach Using Provincial Locality Aspects to Eliminate Denial of Service AttacksS. Periyasamy, K. DuraiswamyA Denial-of-Service (DoS) attack, a menace to the availability of resources and service to the intended user, is usually by augmenting the traffic in the communication medium. These attacks originate in either ways, internal or external to a network with the aim to suspend the legitimate user from getting his/her service. The DoS attacks have been countered through various approaches, … …Journal of Computer Science, Vol. 9, Issue 2 · 12 Apr 2013 · 6,034 accessesView PDF Cite

Research ArticleOpen accessIn the author namesEmission and Combustion Characteristics of Si Engine Working Under Gasoline Blended with Ethanol Oxygenated Organic CompoundsDhanapal Balaji, Periyasamy Govindarajan, Jayaraj VenkatesanProblem statement: The objective of this study is to investigate the effect of using unleaded gasoline and additives blends on Spark Ignition engine (SI engine) combustion and exhaust emission. Approach: A four stroke, single cylinder SI engine was used for conducting this study. Exhaust emissions were analysed for Carbon Monoxide (CO), Hydrocarbon (HC) and Oxides of Nitrogen (NOx) and carbon … …American Journal of Environmental Sciences, Vol. 6, Issue 6 · 31 Dec 2010 · 7,141 accessesView PDF Cite