Browsing Research Publications by Title

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  • Daily and monthly lumped parameter hydrologic models for analysis of small watersheds in Sri Lanka 
    Perera, GMCA; Rajapakse, RLHL [Conference-Full-text]
    Water resource management has become vital with the increase of demand for fresh water and modelling of ungauged basins under the conditions of data scarcity has always been a challenge. The two-parameter (2-P) and ...
  • Damage assessment matrix for low-rise masonry houses 
    Wickramathilake, GGTD; Jayasinghe, C [Conference-Abstract]
    Low-rise buildings are susceptible to damage from factors like poor design or construction quality, inadequate supervision, improper drainage, problems due to the soil condition, and adverse climatic conditions. In certain ...
  • Damage detection based on modal damping change in bridges 
    Yamaguchi, H; Matsumoto, Y; Kawarai, K; Dammika, AJ; Shahzad, S; Takanami, R [Conference-Full-text]
    Structural Health Monitoring has drawn more attention from bridge engineers since the tragic collapse of the I-35W Mississippi River Bridge. In health monitoring of bridges, visual inspection has been the principal technique, ...
  • Damage mechanism of Hikkaduwa due to December 2004 Indian Ocean tsunami 
    Welhena, T; Samarawickrama, SP; Hettiarachchi, SSL [Conference-Extended-Abstract]
    More than two thirds of the Sri Lankan coastline got affected from the December 2004 Indian Ocean Tsunami. Field surveys conducted clearly indicate that some of the cities in the western coast of Sri Lanka in the shadow ...
  • Damage on masonry walls due to blast vibration 
    Wickramasinghe, SANS; Masakorala, SR; Jayasinghe, EATP; De Silva, GHMJS; De Silva, GSY [Conference-Full-text]
    When the energy left over from a blasting process transmits to the surrounding, particles in their paths are displaced by these waves giving rise to particle velocities. But a structural vibration may vary according to ...
  • Damping properties of existing single-span prestressed concrete girder bridges with different service periods 
    Tanaka, T; Rehmat, SE; Matsumoto, Y; Abeykoon; Dammika, J [Article-Full-text]
    Invisible damages in bridges, such as corrosion of rebar, may not be detected by periodic visual inspection that is the principal method in bridge maintenance. A possible non-destructive technique which has been investigated ...
  • Dangers of component trapping in distillation: an industrial methanol distillation case study 
    Udugama, IA; Mansouri, SS; Kirkpatrick, R; Young, B; Taube, MA [Conference-Full-text]
    The formation of organic acids due to secondary reactions is an issue in industrial methanol synthesis. As such, to avoid the formation of acidic regions in the units downstream of the methanol synthesis loop, caustic ...
  • A data acquisition methodology for the development of local driving cycles 
    Gajanayake, S; Bandara, S; Sugathapala, T [Conference-Abstract]
    Driving Cycles (DCs), the time speed profiles of a certain vehicle type for a given road segment can be considered as one of the main tools to quantify and to assess the performance in terms of fuel economy and emissions ...
  • Data analysis and filter optimization for pulse-amplitude measurement: a case study on high-resolution x-ray spectroscopy 
    Mannatunga, KS; Valinoti, B; Samayoa, WF; Crespo, ML; Cicuttin, A; Kamdem, JF; Garcia, LG; Carrato, S [Article-Full-text]
    In this study, we present a procedure to optimize a set of finite impulse response filter (FIR) coefficients for digital pulse-amplitude measurement. Such an optimized filter is designed using an adapted digital penalized ...
  • A data driven approach for detection and correction of spelling errors in sinhala essays 
    Samarasinghe, PM; Sewwandi, WBI; Ranathunga, L; Wijetunge, WASN [Conference-Full-text]
    This paper proposes novel approaches for checking and correcting spelling errors in Sinhala essays written by candidates of grade five scholarship examination. They don't have a proper mechanism to identify their spelling ...
  • A data driven binning method to recover more nucleotide sequences of species in a metagenome 
    Vimukthi, K; Wimalasiri, G; Bandara, P; Herath, D [Conference-Full-text]
    Metagenomics accelerated the process of studying different species and their dynamics in multiple environments. A key step in a metagenomic study is to group nucleotide sequences belonging to an individual or closely ...
  • Data management systems for state bus operator 
    Kumarage, AS; Fernando, S; Jinawardana, R [SRC-Report]
    This software is developed by University of Moratuwa for managing bus operations and revenue collections for state bus cooperation. The system is consist with gathering static details such as employee, vehicle and bus ...
  • Data mining approach for analyzing factors influencing vegetable prices 
    Illankoon, IMGL; Kumara, BTGS [Conference-Full-text]
    Vegetables have a special place in the Sri Lankan economy. The price of vegetables, unlike the prices of other products, changes daily. There are several reasons for this and the examples include environmental conditions, ...
  • Data science applications for carbon footprint management in buildings: a systematic literature review 
    Sandaruwan, IPT; Janardana, JAB; Waidyasekara, KGAS [Conference-Full-text]
    Buildings have a significant impact on climate change. The building industry is the world’s biggest energy consumer and the building's operation accounts for 80–90% of its total energy consumption over its lifetime. ...
  • Data security implementations in cloud computing: a critical review 
    Firdhous, MFM; Hussien, NA [Conference-Full-text]
    Cloud Computing has captured the market as the most promising computing paradigm, where users are allowed to use computing resources in a flexible and cost effective manner. Data storage is one of the services provided ...
  • Database based and RESTful email system with offline web based email client 
    Dias, G; Karunarathna, DGM; Udantha, GPDM; Gunathilake, JAIM; Pathirathna, PSP; Rathnayake, RATL [Conference-Abstract]
    Summary form only given. Power management techniques that leverage voltage as a handle are being extensively used in power sensitive designs. These techniques include power gating, power gating with retention, multiple ...
  • Daylight variability and human perception 
    Pathirage, LY; Perera, NGR [Conference-Full-text]
    Visual perception of a space is influenced by the composition and behaviour of light. Daylight as a natural element, creates different atmospheres in the same space by its variation of intensity, colour, and direction. It ...
  • A dc link for the power system simulator 
    Abeyrathne, PM; Abeysinghe, AMGT; Karunanayake, IM; Ranasinghe, PMH; Dias, MP; Lucas, JR [Conference-Full-text]
    High Voltage Direct Current (HVDC) links are used for bulk power transmission due to its advantages over the alternating current (ac) transmission. A HVDC link between India and Sri Lanka has also being proposed. Hence it ...
  • DC microgrid as a solution for utilisation of solar photovoltaic sources 
    Bandara, AIMH; Binduhewa, P; Ekanayake, J [Conference-Full-text]
    MicroGrid (MG) is a convenient solution to integrate renewable energy sources to the existing power network. Though ac MicroGrids are widely studied, researches are focused towards the implementation of dc MicroGrids ...
  • DC Motor inertia estimation for robust bilateral control 
    Perera, GVAGA; Pillai, MB; Abeykoon, AMHS [Conference-Abstract]
    Identification of system parameters of a small DC motor is a complex and challenging task. This research proposes a disturbance observer (DOB) based novel Change of Inertia Observer (CIOB) to estimate the moment of ...