http://repo.lib.sab.ac.lk:8080/xmlui/handle/123456789/575 2026-04-30T01:39:12Z http://repo.lib.sab.ac.lk:8080/xmlui/handle/susl/2596 Performance of the Dye-sensitized Solid-state Photovoltaic Solar Cell Depending on the Cluster Size of Tio2 Electrode Aponsu, G. M. L. P. A fully dye-sensitized solid-state photovoltaic nanoporous n-Ti02/dye/p-Cul was constructed by depositing p-Cul onto a nano-porous film of n-Ti02 coated with dye. Tannin and cyanidin were used as the dyes coated on the TiO2 electrode. The photovbltage and the photocurrent of the cell mainly depended on the cluster size of the T 1O2 film. And,the Tí0 2 electrode with two layers of different particle sizes also affected on the photovoltage . and photocurrent of this cell. 2004-10-01T00:00:00Z http://repo.lib.sab.ac.lk:8080/xmlui/handle/susl/2595 Knowledge Management in Telework Context Munasinghe, Lalith; Wijayanayake, Janaka In general, teleworkers can be profiled as knowledge workers, and therefore, the performance of a telework arrangement depends largely on the knowledge of the workers However, since telework distances workers from their organisation and co-workers. there can be some problems in organisational memory and knowledge management The exchange of knowledge, especially tacit knowledge, requires a great deal of face-to-face contacts, such as meetings, training sessions, and apprenticeships. In a telework environment, this social interaction and vital face-to-face commumcation is limited and transfer of individual tacit knowledge may not take place effectively among members withm the organisation. In this paper, the problems of knowledge management in telework is discussed and extensive use of communication media and group building among teleworkers through informal, communication using communication media to minimise those problems are proposed. 2004-10-01T00:00:00Z http://repo.lib.sab.ac.lk:8080/xmlui/handle/susl/2594 A Low-cost Heterogeneous Computer Network Rathnayake, R.M.N.B.; Meegama, R.G.N. A low-cost Computer network where users can have access to facitities under two operating Systems simultaneously is proposed. The multi-user network is implemented with the available resources in the laboratories, the only running cost being telephone charges for the dial-up connection with LEARN for e-mail Services. Two servers, one under Windows NT and the other, Linux operating system, host the network. The former is used as the primary domain of the students and also for file storage and web page hosting while the latter is mainly used for e-mail facilities to all the staff members in the university. 2004-10-01T00:00:00Z http://repo.lib.sab.ac.lk:8080/xmlui/handle/susl/2593 Seasonality and Periodicity of Trends in Rainfall and Temperature in Sri Lanka Jayasundara, J.M.S.B.; Ratnasekara, T.A.D.N.S. Climatic changes are an important factor especially in view of current global warming scenarios. Study of climatic changes in Sri Lanka is reievant, particularly, as any change in the seasonality of rainfall can affect the country's agricuitural productivity. Henee, the present study attempts to separately ascertain whether there have been changes in seasonal rainfall and temperature in the ‘dry’ and ‘wet’ zones during the 1870-1999 period. As there are no cyclic changes or linear trends observed for the whole study period, the period was divided into four sub-periods: 1870-1909,1910-1939, 1940-1969 and 1970- 1999. Simple regression coefficients were calculated for those sub-periods. Rainfall and temperature were calculated by spatial averaging. Measurement errors and fluctuations were reduced by averaging the data from different locations. As monthly data do not necessarily relate to seasonality, only typical months for each of the four seasons were selected and the data were averaged for the respective seasons. The analyses reveal the following trends: a decrease of rainfall of both monsoon seasons and an increase of rainfall of the two inter-monsoon seasons when whole study period is considered. As for temperature, there has been a slight increase all over the island (with the exception of a slight decrease in the dry zone in the 1910-1939 period ). The trends were also calculated for four periods. 2004-10-01T00:00:00Z