Browsing Basic & Applied Sciences by Author "Chandrasekara, NV"
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Influence of the factors associated with suicides: A case study in the Kelaniya police division in Sri Lanka
Kumara, JLSM; Chandrasekara, NV (2019)Suicide is a major public health problem worldwide and moreover it is considered as a social problem. In Sri Lanka, suicides have been a major social and economic burden for the previous three decades. Hence, developing ... -
Modelling and forecasting monthly petroleum crude oil prices using a hybrid time series model
Samarakoon, HHTP; Madhuwanthi, RAN; Wijayawardhana, HNAM; Chandrasekara, NV (2019)Crude oil is a naturally occurring resource composed of hydrocarbons and other organic material. Crude oil price exert a great impact on the global economy. Therefore, modelling and forecasting crude oil prices are ... -
Modelling Open Market Retail Price of Red Onions in Colombo using ARIMA-GARCH Mixed Model
Saumyamala, MGA; Weerasinghe, WPMCN; Kumara, JLSM; Sachithra, SAL; Chandrasekara, NV (2019)Red onion is an important commodity in Sri Lankan culture which subject to high frequent fluctuations in retail price due to government policies, trade agreements and weather conditions like heavy rainfall. Objective ... -
A seasonal ARIMA model to forecast monthly potato yield in Sri Lanka
Perera, MSH; Karunarathne, AWSP; Hewage, SS; Sandamali, LBU; Chandrasekara, NV (2019)–The potato is an extensively cultivated tuber crop in the world. In Sri Lanka, cultivation has been established in four regions: Nuwara Eliya, Badulla, Jaffna and Puttalam. The objective of this paper is to analyze and ...