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Issue Date	Title	Author(s)
2001	Development of fuzzy logic based traffic control systems	Sonnadara, D.U.J.; Fernando, W.S.
2001	Development of low cost network based virtual instruments	Sonnadara, D.U.J.; Goonatillake, P.
2001	A simulation study on the correction of the systematic errors in a network of magnetic direction finding network	Sonnadara, D.U.J.; Liyanage, J.P.; Fernando, I.M.K.
2001	Some characteristics of cloud to ground lightning obtained with lightning direction finding systems in Sri Lanka	Sonnadara, D.U.J.; Fernando, I.M.K.; Weerasekera, A.B.; Liyanage, J.P.
2001	A low cost device protector for telephone-interfaced equipment	Sonnadara, D.U.J.; Goonatillake, P.
2000	Measurements of lightning peak currents in the first return stroke of negative cloud to ground flashes	Sonnadara, D.U.J.; Weerasekera, A.B.; Liyanage, J.P.; Fernando, I.M.K.
2000	Preliminary results of Markov model approach in forecasting wet/dry condition over short periods	Sonnadara, D.U.J.; Jayewardene, D.R.; Perera, H.K.W.I.
2000	A comparison between some characteristics between positive and negative cloud to ground flashes observed in Sri Lanka and their seasonal variations	Sonnadara, D.U.J.; Fernando, I.M.K.; Weerasekera, A.B.; Liyanage, J.P.
1999	On the accuracy of locating lightning ground flashes using two or more direction finding stations	Sonnadara, D.U.J.; Fernando, I.M.K.; Namasivayam, S.; Jayaratne, K.P.S.C.; Bandara, K.R.A.; Lelwala, R.; Weerasekera, A.B.; Gomes, C.; Ariyaratne, T.R.
1999	Some features of lightning ground flash activities observed in tropical thunderstorms	Sonnadara, D.U.J.; Weerasekara, A.B.; Fernando, I.M.K.; Lelwala, R.; Jayaratne, K.P.S.C.; Namasivayam, S.; Bandara, K.R.A.; Gomes, C.; Ariyaratna, T.R.
1998	The Effect of Field Leakage on the Kinetic Energy Measurements of Ions emitted in a Plasma Desorption Mass Spectrometry	Sonnadara, D.U.J.; Fernando, M.M.G.S.
1998	PC Based Data Collection and Process Control Systems for Research and Industry Applications	Sonnadara, D.U.J.; Jayananda, M.K.
1998	Building Low Cost Virtual Instruments for Physics Research	Sonnadara, D.U.J.; Fernando, H.T.M.M.
1998	Preliminary results of implementing an automated system in Sri Lanka to locate lighting ground flashes	Sonnadara, D.U.J.; Ariyaratne, T.R.; Jayaratne, K.P.S.C.; Fernando, I.M.K.; Namasivayam, S.
1998	Comparison of FFT and Maximum Entropy Method in Sinhala Speech Recognition	Sonnadara, D.U.J.; Nanayakkara, A.; Jayananda, M.K.; Sonnadara, D.U.J.
1998	Human Voice and Speech: Creating a Simple Speech Recognizer for the Sinhala Language	Sonnadara, D.U.J.; Warusawithana, M.P.; Jayananda, M.K.; Nanayakkara, A.
2012	Fractal Analysis of Cloud Shapes	Madhushani, K.N.R.A.K.; Sonnadara, D.U.J.
2011	Extracting Traffic Parameters at Intersections through Computer Vision	Peiris, K.D.; Sonnadara, D.U.J.
2011	Colour Image Segmentation Technique for Screen Printing	Hewage, R.U.; Sonnadara, D.U.J.
2011	Classification of Coir Fibres using Machine Vision	Chamara, M.W.T.; Sonnadara, D.U.J.