Browsing by Year "2007"

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  • Influence of setbacks on the performance of high-rise buildings under blast loadings 
    Jayatilake, IN; Dias, WPS; Jayasinghe, MRT; Thambiratnam, DP [Conference-Extended-Abstract]
    With the increase in terrorism worldwide, blast loading has received considerable attention. In January 1996, a 400kg bomb exploded at the entrance of the Central Bank Building in Colombo causing extensive damage. Blasts ...
  • Influence of the kalman filter for state space modelling 
    Cooray, TMJA [Conference-Extended-Abstract]
    A Kalman filter, suitable for application to a stationary or a non-stationary time series, is proposed. It works on time series with missing values. It can be also used on seasonal time series where the associated state ...
  • The Influence of transfer plates on the lateral behaviour of apartment buildings 
    Balasuriya, SSKM; Bandara, SSKMK; Ekanayake, SD; Jayasinghe, MTR [SRC-Report]
    The skylines in the major cities of Sri Lanka are fast changing with many apartment buildings being constructed. One of the primary requirements is the provision of car parking for which the lower floors are generally ...
  • Intellitraffic computer vision based hightwa y traffic parameter estimation system 
    De Silva, CR; Dharmawardana, KATS; Ratnayake, ADSE; Rodrigo, SAKC; Sandeepani, LAA [Conference-Extended-Abstract]
    The Traffic Control System of a country is a main area that has the potential to affect the development of a country in a very extensive scale. The existing traffic control systems in Sri Lanka, UniRoadl and UniRoad2 are ...
  • Irrigation infrastructure management requirements to ensure water security for impoverished rural populations under climate change scenario 
    Wijesekera, NTS [Article-Abstract]
    Climate change studies have come to maturity with the 4th report of the Intergovernmental panel on Climate Change in 2007. Conclusions about temperature increases, rainfall variations, climate change relationships with ...
  • Low cost adsorbents for cadmium removal from wastewater 
    Amarasingh, BMWPK; Adams, C [Conference-Extended-Abstract]
    Contamination of water by toxic heavy metals through the discharge of industrial wastewater is a worldwide environmental problem. Heavy metals form complexes or "ligands" with organic compounds. These modified biological ...
  • Manufacture of epsom salt from sea bitterns 
    Perera, SAS [Conference-Abstract]
    Large quant it ies of Epsom Salt (MgS04.7H20) and Kiesserite (MgS04.H20) are imported to Sri Lanka, ~IS fertilisers, for the cultivation of annual crops, such as cereals, fruits and vegetables and for the cultivation of ...
  • Manufacture of fuel ethanol from vegetable and fruit market waste 
    Perera, SAS; Perera, MAS; Ratnasinghe, RMCG; Perera, DHN; Mahawatta, DCG; Mahesh, KWC; Walliwala, SG
    In Sri Lanka, due to inappropriate packing, handling, transport, storage and poor, marketing strategies adopted by farmers, distributors and sellers, more than 40% of vegetables and fruits get spoilt and are thrown out as ...
  • Mathematical modeling of deodorization process for a cross current multistage deodorizer 
    Ariyapperuma, YP; Amarasinghe, ADUS [Conference-Extended-Abstract]
    Deodorization of fats and oils is necessary to remove the undesirable flavor and odor components that are naturally present or created during processing. A mathematical formula was derived to establish the relationship ...
  • MESMI - media streaming middleware for handheld devices 
    Senarathna, SN; Liyanage, H; Dadigama, P; Panawalaa, J; Widanapathirana, A [Conference-Extended-Abstract]
    Recent advances in wireless network technologies have enabled the development of multi-media streaming applications in the handheld domain, which raises new challenges in order to achieve best possible playback at the ...
  • Mobile multi agent system (MMAS) 
    Gamage, MNK; Ponnamperuma, S; Langappuli, CW; Anuranga, LLG; Senaratna, SN [Conference-Extended-Abstract]
    Mobile Agents are emerging as a prorrusing paradigm for the design and implementation of distributed applications. Although there were many researches related to Mobile Agents they have not been transformed into a significant ...
  • Modelling of Tsunami loads and resistance 
    Dias, WPS; Mallikarachchi, HMYC; Yapa, YD [SRC-Report]
    The Indian Ocean tsunami and its devastating effects have raised questions as to what could be done to prevent or minimise such a level of loss in the future. In the case of structural aspects, first of all we should be ...
  • Multi-dimentional moving grid simulation of sca venging in a small two-stroke gasoline engine typical in south Asia 
    Nalim, RM; Wijeyakulasuriya, SD [Conference-Extended-Abstract]
    Vehicles are a dominant source of urban air pollution in South Asia, due to a high population of small dirty engines. According to ADB, Asia has the world's highest concentration of two and three wheelers and in many Asian ...
  • A mutipurpose optimized directshow filter for videomixing applications 
    Udawatte, L; De Silva, CR; Chathuranga, SAK; Danansuriya, LNP; Ganegedara, KMHS; Gunasinghe, UP [Conference-Extended-Abstract]
    A video mixer [1] is used to select one or many video streams from different video sources and mix them together to form a single video output. The currently available video mixers use specific hardware devices of very ...
  • A new mathematical model to predict the iodine value of fatty oils 
    Prashantha, MAB; Premachandra, BAJK; Amarasinghe, ADUS [Conference-Extended-Abstract]
    Iodine value is defined as the number of centigrams of iodine per gram of oil sample. Drying property of fatty oils mainly depends on the type of unsaturated fatty acids and relative amounts of each type of fatty acid in ...
  • Numerical modelling of tsunamis - case study from Galle 
    Samarawickrama, SP; Hettiarachchi, SSL; Ratnasooriya, AHR [Conference-Extended-Abstract]
    In the context of Tsunamis the location of Galle is extremely vulnerable. It lies besides a wide bay and a natural headland on which is located the historic Galle Fort with very reflective vertical non-porous walls on all ...
  • Nutrients, Fe and bacterial removal in sub surface flow constructed wetlands treating polluted mine water 
    Dharmasiri, KLGNC; Yalini, A; Jeewantha, DLC; Karunarathne, S [Conference-Full-text]
    A study was carried out to compare the performance of a pilot scale subsurface flow constructed wetland system to treat polluted water in Ragama prison quarry, an abandoned mine pit Two cement sand tanks with the dimensions ...
  • Offshore sand exploration around Kaluthara-Beruwala area 
    Gunasinghe, AWDC; Chandana, NHS; Ranaweera, DHD; Vijitha, AVP; Rathnayake, NP [Conference-Full-text]
    Offshore minerals are used as a raw mineral for various types of industries around the world. The exclusive economic zone belonging to Sri Lanka more than eight times land area of the country, offering huge potential for ...
  • Online sinhala handwritten character recognition for desktops 
    Dias, G; Patikirikorala, TNP; Arambewela, CI; Darshani, RPM; Alahendra, ND [Conference-Extended-Abstract]
    Online Sinhala handwritten character recognition is a fairly under-developed, albeit well researched area in the local natural language initiative. Recent attention towards this area produced an application named PanhinDA, ...
  • Philosophical grounding and computational formalization for practice based engineering knowledge 
    Dias, WPS [Article-Full-text]
    Michael Polanyi’s idea of tacit knowing and Martin Heidegger’s concept of pre-theoretical shared practice are presented as providing a strong rationale for the notion of practice based knowledge. Artificial Intelligence ...