02131nam a2200253   450000500170000000800410001703500150005810000270007324501010010026000520020130000100025349000510026350001770031450200840049152009530057565000280152865000250155670000350158170000410161670000370165771000350169481000830172985600650181220260819084634.0301198s1988    th      r    0000|0 eng d  a.b107320931 aLatif, Shamsudin Abdul10aTime series analysis of water quality data of a river in Malaysia busing Box Jenkins techniques  aBangkok :bAsian Institute of Technology,c1988  a62 p.1 aResearch studies project report ;vno. EV-88-2  aA research study (12 credits) submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development  aResearch Studies Project Report (M. Eng.) - Asian Institute of Technology, 1988  aThis is a case study on the application of the Box Jenkins  technique of time series analysis to the analysis of water  quality data of two tributaries of Klang River in Malaysia.  In the first ~art of the study, models were formulated  using five years of monthly water quality series. The ability  of the models to forecast 'average' water quality was then  evaluated utilizing nonparametric Mann Whitney test on the  sample ~ets of twelve months ahead forecasts and the observed  water quality in the sixth year. The average' water quality  C represented by the 50 percentile , in this study) predicted by  the models which passed the test, is in close· agreement with  the observed values.  The second part of the study is concerned with modeling  using six years of quarterly data. With sufficient data points,  forecasts from models based on the quarterly data may provide  useful information for the purpose of management of water  quality.10aWater qualityxMalaysia10aTime-series analysis1 aYamamoto, Kazuo, eChairperson1 aOrth, H. M., eExamination Committee1 aI, Fude, eExamination Committee2 aUS- Asean, eScholarship Donor2 aAsian Institute of Technology.tResearch studies project report ;vno. EV-88-2  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B18830