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RISTCON 2018: Recent submissions

  • Plant regeneration from cotyledonary nodal explants of tomato ( Lycopersicon esculentum Mill.) cultivar KC 1 
    Shanika, M.M.A.N.; Seran, T.H.; Shiyamala, B. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    This experiment was carried to study the in vitro shoot response of cotyledonary nodal explants derived from 12 days old in vitro grown seedlings of tomato cultivar KC 1. A centimeter long cotyledonary nodal explants ...
  • Preliminary results of Low Resolution Spectroscopy of some selected stellar objects using a DSLR camera 
    Chathuranga, M.D.M.; Amaradasa, H.D.S.; Mahanama, G.D.K. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    Properties of distant stars and galaxies such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements can be studied using their spectroscopy. ...
  • Sinhala news analysis using text mining and machine learning 
    Ekanayaka, R.K.S.K.; Lorensuhewa, S.A.S.; Kalyani, M.A.L. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    Due to the rapid development of information technology, vast amounts of information are generated daily. Unstructured data such as news reports are a significant part of these growing information repositories. This ...
  • Improving user friendliness of Sin glish to Sinhala Unicode converters by word prediction 
    Kapugama, K.D.C.G.; Lorensuhewa, S.A.S.; Kalyani, M.A.L. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    Singlish is a method that uses Latin characters (English) for transcribing Sinhala words. Sri Lankan people are more familiar with this method of input than typing with the standard Sinhala keyboard layout (Wijesekara ...
  • Methods to measure value at risk of a portfolio: a case study on Sri Lanka Stock Exchange 
    Gallage, D.D.P.; Abeygunawardana, R.A.B. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    In this study three different methods are used to measure and compare Value at Risk (VaR) of four different portfolios. Twenty securities which are used to calculate S&P 20 SL index in Colombo Stock Exchange were used to ...
  • Use of dynamic text prediction for Tamil text editing 
    Sarubi, T.; Lorensuhewa, S.A.S.; Kalyani, M.A.L. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    In text processing, typing whole documents by ourselves leads to lots of spelling mistakes and also it is time-consuming. When it comes to morphologically rich languages like Tamil language, it’s even more difficult, due ...
  • Some estimations of summation-integral-type operators 
    Rishikesh, Yadav (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    In this paper, we study about the Szász-Mirakyan- Kantorovich type operators and obtain the rate of convergence in the sense of local approximation results with the help of modulus of smoothness, second order modulus of ...
  • Integrating IoT with greenhouse environments for monitoring and analysis 
    Niroshana, P.I.K.; Ranasinghe, M.P.S.; Chamalka, G.K.; Devinda, L.A.M.J.A.; Dantanarayana, T.G.G.; Masakorala, K.; Walisadeera, A.I. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    The increasing demand for quality crop production has significantly risen in utilization of high quality greenhouses. Specific environmental conditions are required to cultivate crops in greenhouses. Monitoring environment ...
  • Heteroatom rich mesoporous carbon supported gold nanoparticles – An efficient catalyst for benzyl alcohol oxidation 
    Thambiliyagodage, C.J.; Bakker, M.G. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    Oxygen and nitrogen rich hierarchically porous carbons (NC/O and NC/O,N respectively) were synthesized by using furfuryl alcohol and furfuryl amine respectively as the carbon precursors by nanocasting into hierarchically ...
  • Forecasting monthly cinnamon prices in Matara Ddistrict using ARIMA approach 
    Dilshani, S.D.M.; Prasangika, K.D.; Peiris, T.S.G.; Jayasekara, L.A.L.W. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    Cinnamon is one of the most valuable crops in Sri Lanka. The global market attracted a lot of attention for the Ceylon Cinnamon. This study was focused on modelling M-5 type cinnamon prices in Matara district in Sri Lanka ...
  • Identification of Gender from Acoustic characteristics of Sinhala vowels 
    Weerarathna, K.A.P.; Bodhika, J.A.P.; Jayasekara, L.A.L.W.; Wicramasinghe, A. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    Speech is a pressure wave generated in air. When air is pushed through the vocal folds with sufficient pressure, the vocal fold vibrates and produces voice with the help of articulators. Inside the vocal tract, air is ...
  • Stability analysis of a double delayed HIV– I dynamics model with nonlinear functional response and absorption effect 
    Mendis, M.K.S.; Pradeep, B.G.S.A.; Rathnayake, N.S. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    Several models for the HIV–I have been constructed with the assumptions that the processes within the body compartments are instantaneous, the incidence rates of the activities between viruses and target cells are bilinear ...
  • Hearing threshold shift of workers in metal quarries and crushers due to high occupational noise exposure 
    Sethunga, S.M.N.; Abeysuriya, U.; Bodhika, J.A.P.; Dharmaratne, W.G.D.; Wickramasinghe, S.A. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    Occupational noise causes both auditory and non-auditory health effects. This study is focused on the variation of hearing threshold level of a sample of workers as Metal Crushers (MC) and Metal Quarries (MQ) at eleven ...
  • Numerical solutions of a time fractional reaction diffusion model for pattern formation in coral reefs 
    Somathilake, L.W.; Burrage, K. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    In this paper, we propose a Time Fractional Reaction Diffusion mo del for the growth of corals in a tank and solve that model numerically. In order to do numerical simulations, we transformed the model equations in to ...
  • Trends and effect of economic factors of suicides in Sri Lanka 
    Devindi, R.P.D.C.S.; Kulatunga, D.D.S. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    The effects of ten socio economic factors on suicides of Sri Lanka are investigated using multiple regression analysis on time series data from 1975 to 2015. This study also includes a graphical analysis of trends of ...
  • Design and a nalysis of a p hase d ifference m easurement s ystem with i mproved p erformance. 
    Ajward, A.M. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    The accuracy or error of a phase difference measurement between two different si nusoidal signals is significantly affected by the noise in them. Quadrature Demodulation (QD) is one of the methods used for calculating the ...
  • Approximate solutions of time fractional Fornberg-Whitham type equations by Laplace decomposition method 
    Mathanaranjan, T.; Himalini, K. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    In this study, the approximate solutions of the nonlinear time fractional Fornberg-Whitham and modified Fornberg-Whitham equations are derived by means of the Laplace decomposition method. Laplace decomposition method is ...
  • Synthesis and characterization of bacteria-mediated silver nanoparticles 
    Peiris, M.M.K.; Gunasekara, T.D.C.P.; Arachchi, N.D.H.; Jayaweera, P.M.; Fernando, S.S.N. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    Various organisms including plants and microorganisms can produce metal nanoparticles (NPs) intra- or extracellularly. Silver nanoparticles (AgNPs) were synthesized from Pseudomonas aeruginosa (ATCC 27853), Staphylococcus ...
  • Effect of Sound on the Staphylococcus Aureus bacterium 
    Kumara, P.A.M.M.; De Silva, L.M.M.; Aponsu, G.M.L.P. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    With the rapid urbanization, the major environmental effect is increasing the microbial infections through water. Therefore, it is important to investigate a method of controlling these harmful bacteria in an ecofriendly, ...
  • Development of a green building rating tool for special nature buildings (hotels) in Sri Lanka 
    Maheepala, S.A.D.S.S.; Dissanayeka, R.; Jayasinghe, G.Y. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    Increased importance on the green building concept lead to introduce an assessment tool called rating system to be used for evaluating the building performance under sustainable framework. Separate rating tools are important ...

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