Browsing ERU - 2009 by Title

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  • Faster and bouncier cricket pitches using locally available clays 
    Nawagamuwa, UP; Senanayake, AIMJ; Silva, SA; Sanjeewa, DMI [Conference-Extended-Abstract]
    Reasons for the lack of 'pace & bounce' in Sri Lankan pitches has been a topic of debate for a long time. In order to address this problem from an engineering perspective, soil samples from Test venue in Colombo were ...
  • Field assessment for stormwater drainage modelling in expressway design 
    Wijesuriya, WMDU; Wijesekera, NTS [Conference-Extended-Abstract]
    Field assessment is important for storm water drainage engineering in expressway design. Such designs are carried out using hydrologic and hydraulic modeling which involves use of a significant number of empirical equations ...
  • Forecasting critical dry spells in dl1 - a case study from anamaduwa 
    Mathugama, SC; Peiris, TSG [Conference-Extended-Abstract]
    Daily rainfall data(l950-2005) in Anamaduwa were analysed and useful information on the lengths (LDS1-LDS4) and the starting dates (SD1-SD4) of four critical dry spells were obtained. The mean duration of LDS1- LDS4 were ...
  • FPGA-based system-on-chip architecture for real-time embedded vision systems 
    Samarawickrama, M; Pasqual, AA; Rodrigo, R [Conference-Extended-Abstract]
    A single-chip FPGA implementation of a vision core is an efficient way to design fast and compact embedded vision systems from the PCB design level. The scope of the research is to design a novel FPGA-based parallel ...
  • Full scale bio filter ammonia removal performance during filter maturation 
    Wijayawardhana, AJ; Wijeyekoon, SLJ; Walpalage, S; Amarasinghe, ADUS [Conference-Extended-Abstract]
    An industrial bio filter of 23 m3 in capacity, packed with a coconut fiber filter medium inoculated with compost of 12 m3 in volume was operated for a period of 45 days. Performance was monitored at gas flow rates of 1160 ...
  • High pulse thyristor converter for HVDC applications 
    Perera, LB; Karunadasa, JP; Perera, BMD; Perera, KPSD; De Silva, PAGS; Jayarathne, MC [Conference-Extended-Abstract]
    Designing, simulation and implementation of a scaled down model of a High Pulse Thyristor ac / dc Current Source Converter (CSC) for HVDC applications based on a new concept of Multi Level Current reinjection are discussed. ...
  • High pulse voltage source inverter for standalone renewable energy systems 
    Perera, LB; Karunadasa, JP; Chathuranga, KAP; Premathilake, DMKM; Rathnayake, INW; Senarathne, KN [Conference-Extended-Abstract]
    Designing, simulation and implementation of a 3kVA, 36 pulse voltage source inverter for standalone renewable energy systems based on the new concept of multi level voltage reinjection is discussed. Introduction to the ...
  • Hydrodynamic modelling for stormwater management for river basin planning: a case study of welipenna river 
    Galhena, GAIRK; Wijesekera, NTS [Conference-Extended-Abstract]
    Storm induced flash floods are very common in southern part of Sri Lanka especially in South-Western monsoon. The I situation is more severe in Welipenna River, which faces around five major floods per annum. A model ...
  • Hydrologic analysis for stormwater management-a case study of welipenna river basin 
    Wijesinghe, WMD; Wijesekera, NTS [Conference-Extended-Abstract]
    The present work focused on the catchment of Welipenna Ganga at the intersection point of the Southern Expressway. Suitability of the Rational Method, Snyder's Method and SCS Method for a hydrologic analysis of the situation ...
  • Investigation of effectiveness of carbonized rice husk in oily water treatment 
    Anurangi, WAJ; Amarasinghe, BMWPK; De Alwis, AAP [Conference-Extended-Abstract]
    In this study, agricultural waste, rice husk was used as an adsorbent in the oil pollution management. Thermally treated rice husk, prepared by carbonizing rice husk at 600 °C for 3 hrs, were tested for oil removal from ...
  • Linking supply chain management to business performance: An empirical study on sri lankan firms 
    Ekanayake, KCS; Wickramasinghe, VM [Conference-Extended-Abstract]
    Even though Supply Chain Management (SCM) has been identified as a strategic tool that expands a firm's integrated behavior to incorporate customers and suppliers to be fully effective in today's competitive environment, ...
  • Managing construction site material waste: web-based tool 
    Ekanayake, LL; Samarasinghe, DAS; Shamih, MSM; Jayakody, WHAJ [Conference-Extended-Abstract]
    Sri Lanka is a developing country which has considerable expanding infrastructure development projects. Hence, I construction industry generates lots of waste which cause a significant environmental and social impact. It ...
  • Mathematical modeling of extraction of chlorophyll from alternanthera sessilis cultivated in Sri Lanka 
    Jinasena, MAM; Dissanayake, DMMB; Amarasinghe, ADUS; Amarasinghe, BMWPK; Prashantha, MAB [Conference-Extended-Abstract]
    Mass transfer modeling was used to study the extraction efficiency and the effect of temperature on solvent extraction of chlorophyll from. Alternanthera sessilis, which is a leafy vegetable cultivated in tropics and sub ...
  • Measuring volatility in financial data series 
    Cooray, TMJA [Conference-Extended-Abstract]
    This paper analyse relation between expected return and conditional variance, mainly whether it is time-varying or constant (and also linear). It is assumed that for specified period of time investors expect higher returns ...
  • Mobile healthcare network and distance consulting on 3G 
    Amarasinghe, A; Kariyawasam, LID; Rupasinghe, CS; Ruwansiri, WAT; Dias, SAD [Conference-Extended-Abstract]
    Continuous monitoring of patients is becoming increasingly important with the current progress of diagnosis and medical treatment techniques. When the available facilities and healthcare cost are considered, remote patient ...
  • Nutrient enrichment in colombo flood detention area wetlands 
    Sharmili, S; Hettiararchchi, MN; De Alwis, AAP [Conference-Extended-Abstract]
    Wetlands often serve as nutrient sinks, Wetlands microorganisms and wetlands plants; serve as environmental filters by trapping impurities such as toxins and excessive nutrients as water flows through the wetlands system. ...
  • Possibility of using waste vegetable oil as a biodiesel raw-material 
    Hewa Walpita, DRS; Sampath, PRAU; Samarakoon, SPAGL; Ismail, FM; Gunawardena, SHP [Conference-Extended-Abstract]
    WVO can be successfully and economically converted into biodiesel using a simple conversion process. The biodiesel produced using WVO shows physical properties which are compatible to those of standard biodiesel, and shows ...
  • Power electronic starter for wound rotor induction motors 
    Soysa, WHID; Karunadasa, JP [Conference-Extended-Abstract]
    This paper presents a rotor based power electronic starter for a wound rotor three phase induction motor. The study was done for a 1kW motor and the successfulness of proposed starter was evaluated using Matlab-Simulink ...
  • Prediction of flexural bond in reinforced concrete 
    Weerasekera, IAR; Rasikamal, AADI; Chandrasiri, JPS; Attanayake, RR [Conference-Extended-Abstract]
    A method to forecast bond stresses by accounting for tension transmitted across radial cracks is presented. This phenomenon is known as cohesive cracking. When steel and uncracked concrete are present they are treated as ...
  • Prepaid digital energy meter 
    Samarasinghe, ATLK; Alwis, LLSI; Perera, IU; Samarathunga, IU; Sandaruwan, MKL [Conference-Extended-Abstract]
    Digital prepaid energy meter can be used to monitor the consumption of electricity in domestic needs and supports remote billing, recharging of account and web based account management functions. If the available credit ...