Browsing by Author "Wijesuriya, W."
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Item Adoption of technologies in immature rubber holdings. a case study in the Kalutara district(Rubber Research Institute. Agalawatte, 2004) Wijesuriya, W.; Abeywardena, V.; Guneratne, R.B.Item Analysis of ranking exercises in participatory rural appraisal (PRA). a case study from the smallholder rubber sector(Rubber Research Institute. Agalawatta, 2005) Wijesuriya, W.; Thattil, R.O.Item Characteristics of rainfall in the Moneragala District(Rubber Research Institute. Agalawatte, 2005) Wijesuriya, W.; Herath, K.; Abeywardene, V.Item Comparison of yields between budgrafts and mother trees in Hevea brasiliensis Muell. Arg.(Rubber Research Institute . Agalawatta, 2007) Pathiratna, L.S.S.; Wijesuriya, W.; Seneviratne, P.Item Evaluation of Ashley and patterson model diagnostic tool in selection of ARCH/GARCH family models:case of natural rubber prices at the Colombo auction(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2013) Herath, K.; Samita, S.; Wijesuriya, W.Item Evaluation of ISO recommendation on analysis of precision experiments for statistical quality control(Rubber Research Institute. Agalawatta, 1999) Wijesuriya, W.; Thattil, R.O.Application of appropriate statistical methods is an important task in any quality control process as various statistical approaches such as;sampling,experimentationand process control are involved in quality control lprocesses.This has become an essential practice in many areas since the introduction of ISO quality assurance scheme .This article focuses on precision experiments where several laboratories are compared for a standard measurement method.The whole plrocess of analysis and interpretation suggested by ISO is evauated and documented in a sequential order.In addition to the ISO recommendation,additional graphical methods are suggested for better judgement .The statisticans role as a member of the panel is also lpresented at each step of the quality control process.Item Export performance of rubber products manufacturing sector in Sri Lanka(Rubber Research Institute:Agalawatta, 2013) Sankalpa, J.K.S.; Wijesuriya, W.; Jeewanthi, P.W.Item Farmers perspectives. expectations and constraints faced by smallholder rubber farmers in Moneragala(Rubber Research Institute of Sri Lanka. Agalawatta, 2005) Dissanayake, D.M.A.P.; Wijesuriya, W.; Abeywardene, V.Item Identification of common trends in prices, demand and supply of natural rubber: an approach using dynamic factor model(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2012) Herath, K.; Samita, S.; Wijesuriya, W.Item Identification of instability in natural rubber prices in Sri Lanka(Rubber Research Institute:Agalawatta, 2013) Herath, H.M.L.K.; S Samita, S.; Wijesuriya, W.Item Impact of climate on tea yield: an empirical investigation from Sri Lanka(NSF:Colombo, 2024-06) Edirisinghe,J.C.; Ranjan, H.; Herath, H.M.L.K.; Jayasinghe-Mudalige, U.K.; Wijeratne, M.; Kuruppu, V.; Jayathilake, C.; Wijesuriya, W.; Somarathna, K.; Karunaratne, S.; Jayawardana, S.; Gunathilaka, D.; Balasooriya, D.Item Income status of rubber smallholders in the Moneragala district. reporting from participatory rural appraisals done in four villages(Rubber Research Institute. Agalawatta, 2005) Herath, K.; Wijesuriya, W.; Puhambugoda, R.; Abeywardene, V.Item Indices for measuring performance of smallholder rubber units(National Science Foundation:Colombo, 2007-6) Wijesuriya, W.; Thattil, R.O.; Samitha, S.Item Level of awareness on recommended practices in rubber small holdings in the Moneragala district(Rubber Research Institute of Sri Lanka. Agalawatta, 2005) Wijesuriya, W.; Dharmadasa, M.; Rathnayaka, K.; Abeydissanayake, D.R.A.M.G.; Chandrasiri, J.A.S.Item Methods of data analysis for intercropping systems under rubber(Rubber Research Institute. Agalawatta, 2001) Wijesuriya, W.; Thattil, R.O.Item A new systematic experimental design for tree crop research(Rubber Research Institute of Sri Lanka. Agalawatta, 2006) Pathiratna, L.S.S.; Wijesuriya, W.Item Observed deviations in rainfall at Dartonfield during the recent past(Rubber Research Institute of Sri Lanka. Agalawatta, 2001) Wijesuriya, W.; Abeywarden, V.; Munasinghe, C.Item Poverty alleviation through improvement in technical efficiency in the smallholder rubber sector: case study from Kegalle District of Sri Lanka(Rubber Research Institute:Agalawatta, 2017) Ishani, P.G.N.; Wijesuriya, W.; Sankalpa, J.K.S.Item Preference ranking as a participatory tool in identifying farmers' perceptions in planning effective dissemination programmes(Rubber Research Institute. Agalawatta, 2003) Wijesuriya, W.; Dissanayake, D.M.A.P.; Wijeratne, M.; Edirisinghe, J.; Herath, K.; Abeywardene, V.Item Profit efficiency of smallholder rubber farmers in Kegalle, Kalutara and Ratnapura districts(Rubber Research Institute. Agalawatta, 2010) Edirisinghe, J.; Wijesuriya, W.; Bogahawatte, C.