Books by Ahmad Zaharin Aris
Bookmarks Related papers MentionsView impact
Papers by Ahmad Zaharin Aris
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Reviews in Environmental Science and …, Jan 1, 2012
Bookmarks Related papers MentionsView impact
Marine Pollution …, Jan 1, 2012
This study employed three chemometric data mining techniques (factor analysis (FA), cluster analy... more This study employed three chemometric data mining techniques (factor analysis (FA), cluster analysis (CA), and discriminant analysis (DA)) to identify the latent structure of a water quality (WQ) dataset pertaining to Kinta River (Malaysia) and to classify eight WQ monitoring stations along the river into groups of similar WQ characteristics. FA identified the WQ parameters responsible for variations in Kinta River's WQ and accentuated the roles of weathering and surface runoff in determining the river's WQ. CA grouped the monitoring locations into a cluster of low levels of water pollution (the two uppermost monitoring stations) and another of relatively high levels of river pollution (the mid-, and down-stream stations). DA confirmed these clusters and produced a discriminant function which can predict the cluster membership of new and/or unknown samples. These chemometric techniques highlight the potential for reasonably reducing the number of WQVs and monitoring stations for long-term monitoring purposes.
Bookmarks Related papers MentionsView impact
… of Modelling in …, Jan 1, 2011
Purpose–This paper aims to define the current and potential extent of seawater intrusion in Manuk... more Purpose–This paper aims to define the current and potential extent of seawater intrusion in Manukan Island under different scenarios of varying recharge and pumping rates. The calibrated model was also used to predict the extent of seawater intrusion in low lying area of Manukan Island for two years with all conditions assumed to remain the same as those in December 2009. Design/methodology/approach–Different scenarios of varying recharge and pumping rates based on threats received by Manukan Island were investigated. El- ...
Bookmarks Related papers MentionsView impact
Environmental Monitoring and …, Jan 1, 2011
Principal component analysis (PCA) is capable of handling large sets of data. However, lack of co... more Principal component analysis (PCA) is capable of handling large sets of data. However, lack of consistent method in data pre-treatment and its importance are the limitations in PCA applications. This study examined pre-treatments methods (log (x + 1) transformation, outlier removal, and granulometric and geochemical normalization) on dataset of Mengkabong Lagoon, Sabah, mangrove surface sediment at high and low tides. The study revealed that geochemical normalization using Al with outliers removal resulted in a better classification of the mangrove surface sediment than that outliers removal, granulometric normalization using clay and log (x + 1) transformation. PCA output using geochemical normalization with outliers removal demonstrated associations between environmental variables and tides of mangrove surface sediment, Mengkabong Lagoon, Sabah. The PCA outputs at high and low tides also provided to better interpret information about the sediment and its controlling factors in the intertidal zone. The study showed data pre-treatment method to be a useful procedure to standardize the datasets and reducing the influence of outliers.
Bookmarks Related papers MentionsView impact
Sains Malaysiana, Jan 1, 2012
Bookmarks Related papers MentionsView impact
Journal of Applied Sciences in Environmental …
Bookmarks Related papers MentionsView impact
Research Journal of …, Jan 1, 2011
Bookmarks Related papers MentionsView impact
Environment …, Jan 1, 2010
Bookmarks Related papers MentionsView impact
International Journal of Environmental …, Jan 1, 2010
Bookmarks Related papers MentionsView impact
scirp.org
Bookmarks Related papers MentionsView impact
Natural resources research, Jan 1, 2010
A rapid increase in the number of tourists has placed a heavy demand for freshwater on Manukan Is... more A rapid increase in the number of tourists has placed a heavy demand for freshwater on Manukan Island, a small island located offcoast of Kota Kinabalu, Sabah. Hydrochemical and numerical approaches have been applied in this study to evaluate the groundwater quality of unconfined aquifer lying in Manukan Island, Sabah, East Malaysia. This is vital to enhance better understanding about
Bookmarks Related papers MentionsView impact
Natural Resources …, Jan 1, 2011
A total of 20 soil samples were collected from 10 boreholes constructed in the low lying area, wh... more A total of 20 soil samples were collected from 10 boreholes constructed in the low lying area, which included ancillary samples taken from the high elevation area. Redox processes were investigated in the soil as well as groundwater in the shallow groundwater aquifer of Manukan Island, Sabah, Malaysia. Groundwater samples (n = 10) from each boreholes were also collected in the low
Bookmarks Related papers MentionsView impact
Journal of Sustainability …, Jan 1, 2010
Groundwater studies related to coastal and small islands in Malaysia are briefly reviewed. Perspe... more Groundwater studies related to coastal and small islands in Malaysia are briefly reviewed. Perspectives are addressed as three aspects:(a) study location, where groundwater studies in Malaysia are conducted in different types of coastal and small islands (b) methods, namely numerical modeling, geophysical investigations, hydrochemical analysis and geochemical modeling applied in groundwater studies of Malaysian coastal environment and small islands;(c) types of studies, where most of groundwater studies are more ...
Bookmarks Related papers MentionsView impact
World Review of Science, Technology and …, Jan 1, 2009
... A review of groundwater in islands using SWOT analysis Sarva Mangala Praveena ... 6, Nos. 2/3... more ... A review of groundwater in islands using SWOT analysis Sarva Mangala Praveena ... 6, Nos. 2/3/4, pp.186–203. Biographical notes: Sarva Mangala Praveena is a PhD fellow at the School of Science and Technology, Universiti Malaysia Sabah. ...
Bookmarks Related papers MentionsView impact
The Environmentalist
Bookmarks Related papers MentionsView impact
… of this publication: Park, J.-H. …, Jan 1, 2009
Bookmarks Related papers MentionsView impact
Uploads
Books by Ahmad Zaharin Aris
Papers by Ahmad Zaharin Aris