Browsing Conference Proceedings by Year "2008"

Now showing items 1-20 of 80

A compact and high performance SC DC/DC buck converter

Baek, CJ; Kumarawadu, S [Conference-Abstract]

A novel paralleling interleaved discharging (PID) approach is presented to reduce the output ripple and continuous input current waveform in step-down switched capacitor (SC). Theoretical analysis and the computer simulation ...
A comparative study on work related attitudes of operator level employees and supervisors across firms of different ownership in Sri Lanka

Wanniarachchi, T; Wickramasinghe, V; Wanigatunge, N [Conference-Abstract]

This study investigates the influences of work related attitudes different ownerships (local, foreign and joint venture) type of firms as well as different employee category (worker level employee and supervisory level ...
A novel active inrush suppression method for SC converter

Baek, CJ; Kumarawadu, S [Conference-Abstract]

A new type of Inrush suppression circuit in SC buck converter is proposed. The method is realized by the hybrid of passive and active circuits. It adapts PIC micro controller to generate multi pulse to drive multi switches. ...
A novel morphin-based obstacle avoidance control algorithm for USVs

Jayendra, G; Kumarawadu, S; Piyasinghe, L [Conference-Abstract]

This is an effort of employing good obstacle avoidance algorithms for unmanned surface vehicles (USV) which are already developed for unmanned ground vehicles (UGV). Previously developed Morphin algorithm is utilized for ...
Accurate attitude estimation of low-accelerating vehicles by the use of multiple low cost MEMS-Based IMUs

Dharmapriya, TDK; Kumarawadu, S; Piyasinghe, LP [Conference-Abstract]

Inertial sensors and inertial measurement units (IMUs) are widely used in navigation support systems, autonomous vehicle navigation, and vehicle motion control process. Inertial measurement based attitude determination and ...
Alternative techniques for economical and quality injection mould making for low volume production in Sri Lanka

Mangala, KHJ; Walpolage, S; Warnakulasuriya, N; Wickramasekara, H; Wijayawardana, L [Conference-Abstract]

At present, low volume production of injection moulded parts are being neglected due to high costs. This research was carried out to identify feasible alternative techniques of injection mould making for low volumes. A ...
Alum and Lime dosing controllers for water treatment plant

Hettiarachchi, LP; Dassanayake, VPC [Conference-Abstract]

Many techniques are applied to control coagulant dosing in a drinking water treatment plant. Coagulant dosing rate is non linear correlated to raw water parameters such as turbidity, conductivity, pH, temperature, etc. ...
An Active monocular platform for intelligent vehicles: Design and simulations

Piyasinghe, LP; Kumarawadu, S; Jayendra, G; Dharmapriya, K [Conference-Abstract]

Intelligent vehicles have to perceive their environment in order to navigate and avoid collision. This capability is also important in other applications such as mobile robot navigation, Automated Guided Vehicles (AGVs) ...
An analysis of environmental performance of natural dyes

Wijayapala, UGS [Conference-Abstract]

The objective of this study is to demonstrate the limited heavy metal content in natural dyes (ie to demonstrate near zero burden on the environment) and the final effluent COD (to test the hypothesis that the effluent is ...
Analysis of risks and bottlenecks of a poly bag manufacturing factory - a case study

Gopura, RARC; Jayawardene, TSS [Conference-Abstract]

The material prices of poly bags skyrocket to new heights and forecasters see no end to this trend. Also legal restrictions are imposed on some types of polythene products. In this situation, any entrepreneur engaging in ...
Assessing different methods of salt removal techniques from offshore sand

Ilankoon, IMSK; Jayarathne, LGR; Karunanayake, KDP; Thamilinpamalar, N; Wimalarathna, WMNJ; Vijitha, AVP; Ratnayake, NP [Conference-Full-text]

Usage of offshore sand as an alternative to inland river sand is beneficial due to the various environmental impacts of river sand mining in Sri Lanka. However, higher amount of chloride ions in the sea sand can corrode ...
Biodiesel production from high FFA Rubber Seed oil

Sampath, PRAU; Samarakoon, SPAGL; Ismail, FM; Gunawardena, SHP [Conference-Abstract]

Sri Lanka should look at alternative fuel sources to reduce its dependence on foreign oils. Diesel is the highest used petroleum product in the transport sector. Biodiesel extracted from non edible oils like Rubber Seed ...
Building numbers: the case of post Tsunami housing in Sri Lanka

Munasinghe, H [Conference-Abstract]

Top-down approach used to build housing for the Tsunami victims in Sri Lanka evolved around the number of houses destroyed. The selection of land and the number of units to be built were donor-biased decisions. ...
Car park navigating system

Dias, SAD; Abeywickrama, RV; Attanayake, AATI; De Silva, GRH; Domingo, DDAPC [Conference-Abstract]

It is known that every working day millions of drivers are looking for a place to park and most of the urban traffic occur due to the drivers loitering in search of parking spaces. We wished to offer a simple solution to ...
Challenges faced by the construction industry in Sri Lanka: Perspective of clients and contractors

Rajakaruna, RWDWCAB; Bandara, KATN; De Silva, N [Conference-Abstract]

The construction industiy is .a majior contributor to the development of economies in Sri Lanka. However, it faces significant cballenges and difficulties which are unique to the specific industty. Therefore, it is a vital ...
Cleaner Production option for the Sri Lankan desiccated coconut Industry - bacterial cellulose from wastewater

Walliwala, SG; Ismail, FM; De Alwis, AAP [Conference-Abstract]

The Desiccated Coconut (DC) industry is an important source of export earnings in Sri Lanka. However lack of energy and environmental conservation techniques have made the industry less competitive. In this study, the ...
Coir pith activated carbon for the removal of dyes from aqueous solutions

Dhanusekera, DW; Amarasinghe, BMWPK [Conference-Abstract]

Adsorption of methylene blue, malachite green and nylosan blue dyes onto carbonized coir pith from aqueous solutions was studied. Adsorbent was prepared by carbonizing coir pith at 700 C for l hr. Batch experiments showed ...
Comparative study of environmental & planning law and disaster management law relating to the construction industry in Sri Lanka for sustainable development

Abeynayake, MDTE [Conference-Abstract]

This research will enable to gain basic understanding of Environmental Law & Planning Law relating to the construction industry; and analyse of new physical planning and disaster management rules and regulations in ...
The competitiveness of Sri Lankan apparel industry

Mataraarachchi, R; Heenkenda, N [Conference-Extended-Abstract]

The apparel industry of Sri Lanka has survived for along period of time and the industry was successfully catered to the international market especially for US and EU market in the last two decades. Apparel exports still ...
Construction and demolition waste as a road construction material for flexible pavements

Jayasooriya, VWP; Kumara, MAW [Conference-Abstract]

This research is focuses on evaluating the physical properties and durability characteristics of both demolition and process waste for flexible pavement construction. The initial results showed that there is a possibility ...

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Browsing Conference Proceedings by Year "2008"

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