Browsing Mohd Mustafa Al Bakri Abdullah, Prof. Dr. by Author "Ahmad Shukri, Yahaya"
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Estimation of missing values for air pollution data using Interpolation technique
Norazian, Mohamed Noor; Mohd Mustafa, Al Bakri Abdullah; Ahmad Shukri, Yahaya; Nor Azam, Ramli (Universiti Malaysia Perlis, 2006)Air pollution data such as PM10, sulphur dioxide, ozone and carbon monoxide are usually obtained using automated machines located at different sites. These are usually due to mechanical failure, routine maintenance, changes ... -
Modelling of PM 10 concentration for industrialized area in Malaysia: A case study in Shah Alam
Norazian, Mohamed Noor; Mohd Mustafa, Al Bakri Abdullah; Tan, Cheng Yau; Nor Azam, Ramli; Ahmad Shukri, Yahaya; Noor Faizah Fitri, Md. Yusof (Elsevier BV, 2011)In Malaysia, the predominant air pollutants are suspended particulate matter (SPM) and nitrogen dioxide (NO 2). This research is on PM 10 as they may trigger harm to human health as well as environment. Six distributions, ... -
The Replacement of Missing Values of Continous Air Pollution Monitoring Data using Mean Top Bottom Imputation technique
Norazian, Mohamed Noor; Ahmad Shukri, Yahaya; Nor Azam, Ramli; Mohd Mustafa, Al Bakri Abdullah (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 ...