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The Replacement of Missing Values of Continous Air Pollution Monitoring Data using Mean Top Bottom Imputation technique
(Kolej Universiti Kejuruteraan Utara Malaysia, 2006)
Air pollutants data such as PM10 carbon monoxide, sulphur dioxide and ozone concentration were obtained from automated monitoring stations. These data usually contain missing values that can cause bias due to systematic ...
Elemental characterization of Airbone Particulate Matter (APM) in Parit Buntar and Nibong Tebal
(Kolej Universiti Kejuruteraan Utara Malaysia, 2006)
Study had being conducted to investigate the chemical properties of Airbone Particulate Matter (APM) which present in the ambient air of Parit Buntar Town and Nibong Tebal Town. These towns are located in Nothern Perak and ...