jamal ali kawan, fatihah suja, hassimi abu hasan, othman jaafar and rakmi abd rahman.  (2020).  development of malaysian wastewater polishing index: case study on a moving bed biofilm reactor.  - journal of ecological engineering.  1-8. 

farahani mohd saimi, firdaus mohamad hamzah, mohd ekhwan toriman, othman jaafar, hazrina tajudin.  (2020).  trend and linearity analysis of meteorological parameters in peninsular malaysia.  - sustainability.  1-19. 

firdaus mohamad hamzah, siti hawa mohd yusoff & othman jaafar.  (2019).  l-moment-based frequency analysis of high-flow at sungai langat, malaysia.  - sains malaysiana.  1357-1366. 

mohammed falah allawi, othman jaafar, firdaus mohamad hamzah, ahmed el-shafie.  (2019).  novel reservoir system simulation procedure for gap minimization between water supply and demand.  - journal of cleaner production.  . 

mohammed falah allawi, othman jaafar, firdaus mohamad hamzah, suhana binti koting, nuruol syuhadaa binti mohd, ahmed el-shafie.  (2019).  forecasting hydrological parameters for reservoir system utilizing artificial intelligent models and exploring their influence on operation performance.  - knowledge-based systems.  . 

madihah mohd azharn, khairul nizam abdul maulud, siti norsakinah selamat, md firoz khan, othman jaafar, wan shafrina wan mohd jaafar, sharifah mastura syed abdullah, mohd ekhwan toriman, mohd khairul amri kamarudin, muhammad barzani gasim, hafizan juahir.  (2018).  impact of shoreline changes to the coastal development.  - international journal of engineering & technology (uae).  . 

mohammed falah allawi, othman jaafar, firdaus mohamad hamzah, sharifah mastura syed abdullah, ahmed el-shafie.  (2018).  review on applications of artificial intelligence methods for dam and reservoir-hydro-environment models.  - environmental science and pollution research.  . 

mohammed falah allawi, othman jaafar, firdaus mohamad hamzah, mohammad ehteram, md. shabbir hossain, ahmed el shafie.  (2018).  operating a reservoir system based on the shark machine learning algorithm.  - environmental earth sciences.  1-14. 

mohammed falah allawi & othman jaafar & firdaus mohamad hamzah, nuruol syuhadaa mohd & ravinesh c. deo & ahmed el-shafie.  (2018).  reservoir inflow forecasting with a modified coactive neuro-fuzzy inference system a case study for a semi-arid region.  - theoretical applied climatology.  545-563. 

mohammed falah allawi, othman jaafar, mohammad ehteram, firdaus mohamad hamzah, ahmed el-shafie.  (2018).  synchronizing artificial intelligence models for operating the dam and reservoir system.  - water resources management.  3373-3389. 

s n selamat , k n abdul maulud, o jaafar and h ahmad.  (2017).  extraction of shoreline changes in selangor coastal area using gis and remote sensing techniques.  - journal of physics: conference series.  1-9. 

najwa zainal , firdaus mohammad hamzah & othman jaafar.  (2017).  frequency of rainy days as one of parameter changes in rainfall behavior.  - international journal of applied engineering research.  11062-11067. 

firdaus mohamad hamzah, farahani mohd saimi & othman jaafar.  (2017).  identifying the monotonic trend in climate change parameter in kluang and senai, johor, malaysia.  - sains malaysiana.  1735-1741. 

jamal ali kawan, hassimi abu hasan, fatihah suja`, othman bin jaafar, rakmi abd-rahman.  (2016).  a review on sewage treatment and polishing using moving bed bioreactor (mbbr).  - journal of engineering science and technology.  1098-1120. 

alshareef a., bakar a.a., hamdan a.r., abdullah s.m.s., jaafar o..  (2016).  sequential pattern discovery for weather prediction problem.  - studies in computational intelligence.  223-240. 

f.m. hamzah, o. jaafar, w.n.f.a. jani and s.m.s. abdullah.  (2016).  multivariate analysis of physical and chemical parameters of marine water quality in the straits of johor, malaysia.  - journal of environmental science and technology.  427-436. 

atta m., yaacob w.z.w., jaafar o.b..  (2015).  the potential impact of leachate-contaminated groundwater of an ex-landfill site at taman beringin kuala lumpur, malaysia.  - environmental earth sciences.  3913-3923. 

pauzi abdullah, sharifah mastura syed abdullah, othman jaafar, mastura mahmud, wan mohd afiq wan mohd khalik.  (2015).  characterization of spatial and temporal variability in hydrochemistry of johor straits, malaysia.  - marine pollution bulletin.  378-385. 

almselati a.s.i., rahmat r.a.b.o.k., jaafar o., yahia h.a.m..  (2015).  using spike model to reduce traffic congestion and improve public transportation in malaysia.  - transportation research part d: transport and environment.  59-66. 

mustapha atta, wan zuhairi wan yaacob, othman jaafar.  (2015).  steady state groundwater flow modeling of an ex-lanfill site in kuala lumpur, malaysia.  - american journal of environmental sciences.  348-357. 

shahrom md zain, nur ajlaa mahmood, noor ezlin ahmad basri, hassan basri, wan hamidon wan badaruzzaman, othman jaafar, fatihah suja, mohd raihan taha, wan hanna melini wan mokhtar.  (2015).  environmental education and sustainable development in engineering field.  - journal of engineering science and technology.  23-32. 

a. m. ahmed, azuraliza abu bakar, abdul razak hamdan, sharifah mastura syed abdullah, othman jaafar.  (2015).  sequential pattern discovery algorithm for malaysia rainfall prediction.  - acta physica polonica a.  324-326. 

nariman valizadeh, ahmed el-shafie, majid mirzaei, hadi galavi, muhammad mukhlisin and othman jaafar.  (2014).  accuracy enhancement for forecasting water levels of reservoirs and river streams using a multiple-input-pattern fuzzification approach.  - the scientific world journal.  2014:Article ID 432976. 

mohammad dorofki, ahmed h. elshafie, othman jaafar, othman a. karim, sharifah mastura syed abdullah.  (2014).  a gis-ann-based approach for enhancing the effect of slope in the modified green-ampt model.  - water resource management.  28(2):391-406. 

mustapha atta, wan zuhairi wan yaacob, othman jaafar, zaini sakawi.  (2014).  ammoniacal nitrogen contaminated groundwater at taman beringin ex-landfill site: implication to health and the environment.  - advances in environmental biology.  136-142. 

salem alzahrani, abdul wahab mohammad, pauzi abdullah, othman jaafar.  (2013).  potential tertiary treatment of produced water using highly hydrophilic nanofiltration and reverse osmosis membranes.  - journal of environmental chemical engineering.  1:1341-1349. 

aniza ibrahim, muhammad mukhlisin, othman jaafar.  (2013).  numerical assessment of rainfall infiltration into soil column for the unsaturated layered residual forest soil.  - jurnal teknologi (sciences & engineering).  65(2):121-127. 

salem alzahrani, abdul wahab mohammad, nidal hilal, pauzi abdullah, othman jaafar.  (2013).  identification of foulants, fouling mechanisms and cleaning efficiency for nf and ro treatment of produced water.  - separation and purification technology.  118:324-341. 

sabah s. fayaed, ahmed el-shafie, othman jaafar.  (2013).  reservoir-system simulation and optimization techniques.  - stochastic environmental research and risk assessment.  27:1751-1772. 

hossein shamsaei, othman jaafar and noor ezlin ahmad basri.  (2013).  effects velocity changes on the water quality in water distribution systems.  - research journal of applied sciences, engineering and technology.  5(14):3783-3790. 

salem alzahrani, a.w. mohammad, n. hilal, pauzi abdullah, othman jaafar.  (2013).  comparative study of nf and ro membranes in the treatment of produced water-part i: assessing water quality.  - desalination.  315:18-26. 

sabah s. fayaed & ahmed el-shafie & othman jaafar.  (2013).  integrated artificial neural network (ann) and stochastic dynamic programming (sdp) model for optimal release policy.  - water resources management.  27(10):3679-3696. 

zaini sakawi, lukman ismail, noor khafazilah abdullah, s. a. sharifah mastura, othman jaafar.  (2013).  the influence of distance and atmospheric elements on the concentration of odour from refuse derived fuel (rdf) operations.  - research journal of applied sciences, engineering and technology.  6(14):2630-2633. 

salem alzahrani, a w. mohammad, n. hilal, pauzi abdullah, othman jaafar.  (2013).  comparative study of nf and ro membranes in the treatment of produced water ii : toxicity removal efficiency.  - desalination.  315:27-32. 

hossein shamsaei, othman jaafar and noor ezlin ahmad basri.  (2013).  effects of water age blind spots on the water quality in the water distribution systems with the use of epanet model.  - research journal of applied sciences, engineering and technology.  5(14):3751-3760. 

seyed ahmad akrami, ahmed el-shafie, othman jaafar.  (2013).  improving rainfall forecasting efficiency using modified adaptive neuro-fuzzy inference system (manfis).  - water resources management.  27(9):3507-3523. 

abdelwahab m. bubtiena, ahmed h. el shafei and othman jafaar.  (2012).  review of rehabilitation strategies for water distribution pipes.  - journal of water supply: research and technology - aqua.  61 (1):23-31. 

muhammad mukhlisin, aniza ibrahim, othman jaafar, siti fatin mohd razali.  (2012).  electrochemical assessment of water quality as an effect of construction.  - international journal of electrochemical science.  7(2012):5457 - 5466. 

shahrom md zain, wan hamidon wan badaruzzaman, riza atiq o.k rahmat, othman jaafar, noor ezlin ahmad basri & hassan basri.  (2012).  learning outcomes for environmental and sustainable development component in the field of civil engineering.  - asian social science.  8(16):153-162. 

ali a. najah, a. el-shafie, o. a. karim and o. jaafar.  (2012).  water quality prediction model utilizing integrated wavelet-anfis model with cross-validation.  - neural computing & applications.  21(5): 833-841. 

zaini sakawi, s.a. sharifah mastura, mohd rozaimi ariffin, lukman ismail, othman jaafar.  (2012).  analysis of heavy metal concentration in the vicinity of a landfill site.  - research jurnal of applied sciences.  349-353. 

zaini sakawi, lukman ismail, mohd rozaimi ariffin, noor khafazilah abdullah, sharifah mastura s.a., othman jaafar.  (2012).  persepsi komuniti terhadap masalah bau dari operasi tapak pelupusan terbuka krubung, melaka.  - geografia online malaysia journal of society and space.  8(9):60-67. 

m.e. toriman, muhamad barzani gasim, zulkifli yusop, ismail shahid, s.a. sharifah mastura, pauzi abdullah, mokhtar jaafar, nor azlina abdul aziz, m.k.a. kamarudin, othman jaafar, othman karim, hafizan.  (2012).  use of 137cs activity to investigate sediment movement and transport modeling in river coastal environment.  - american journal of environmental science.  8(4):417-423. 

hai hwee yang, othman jaafar, ahmed el-shafie and sharifah mastura s.a..  (2011).  impact of land-use changes toward base-flow regime in lui and langat dengkil sub-basin.  - international journal of the physical sciences.  6(21):4960-4976. 

a. najah, a. el-shafie, o. a. karim, and o. jaafar.  (2011).  integrated versus isolated scenario for prediction dissolved oxygen at progression of water quality monitoring stations.  - hydrology and earth system sciences.  15(8):2693-2708,. 

aldukali salem i. almselati, riza atiq o.k. rahmat and othman jaafar.  (2011).  an overview of urban transport in malaysia.  - the social sciences.  6(1):24-33. 

sabah s. fayaed, ahmed el-shafie and othman jaafar.  (2011).  performance of artificial neural network and regression techniques for simulation model in reservoir inter-relationships.  - international journal of the physical sciences.  6(34):7738-7748. 

hai hwee yang, othman jaafar, el-shafie a. and sharifah mastura s. a..  (2011).  analysis of hydrological processes of langat river sub basins at lui and dengkil.  - international journal of the physical sciences.  6(32):7390-7409. 

almeslati, a.s.i., rahmat, r.a.o., jaafar, o., abuhamoud, m.a.a..  (2011).  the rise of the private car usage in kajang, malaysia: role of parking policy on reducing car usage.  - journal of applied sciences research.  7(8):1263-1268. 

hossein shamsaei, othman jaafar, noor ezlin ahmad basri.  (2011).  gis advantages and water quality effects and problems in maintenance management of long-line water distribution systems.  - australian journal of basic s and applied sciences.  5(9):2302-2306. 

abdelwahab m. bubtiena, ahmed h. el shafie and othman jaafar.  (2011).  performance improvement for pipe breakage prediction modeling using regression method.  - international journal of the physical sciences.  6(25):6025-6035. 

a. el-shafie, o. jaafer and a. seyed.  (2011).  adaptive neuro-fuzzy inference system based model for rainfall forecasting in klang river, malaysia.  - international journal of the physical sciences.  6(12):2875-2888. 

mohammad dorofki, ahmed h. elshafie, othman jaafar, othman a. karim and sharifah mastura syed abdullah.  (2011).  a gis-based survey for the optimization of infiltration forecasting models with emphasis on slope effect and land use.  - international journal of the physical sciences.  6(24):5738-5751. 

zaini sakawi, sharifah mastura, s.a, othman jaafar.  (2011).  the impact of open landfill operation on the concentration of heavy metals in the soil of its proximate environment.  - res.j.applied sci..  6(7-12):439-442. 

m.e. toriman, othman jaafar, khairul nizam abdul maulud, s.a. sharifah mastura, nor azlina abdul aziz, muhammad barzani gasim, a.c. er, mohd fuad mat jali, nor rohaizah jamil and md. pauzi abdullah.  (2011).  modeling flood inundation in river catchment using hydraulic and geographical information system(gis) simulation approach.  - journal of engineering and applied sciences.  6(6):428-432. 

zaini sakawi, sharifah mastura syed abdullah, othman jaafar, mastura mahmud.  (2011).  an analysis of odour concentration using odour concentration meter xp-329 at landfill vicinity.  - research journal of applied sciences.  6(5):324-329. 

a. najah, a. el-shafie, o. a. karim, o. jaafar and amr h. el-shafie.  (2011).  an application of different artificial intelligences techniques for water quality prediction.  - international journal of the physical sciences.  6(22):5298-5308. 

othman jaafar, mohd ekhwan hj toriman, mushrifah hj idris, s.a. sharifah mastura, hafizan hj. juahir, nor azlina abdul aziz, khairul amri kamarudin and nor rohaizah jamil.  (2010).  study of water level-discharge relationship using artificial neural network (ann) in sungai gumum, tasik chini pahang malaysia.  - research journal of applied sciences.  5(1):20-26. 

othman jaafar, mohd ekhwan toriman, s.a. sharifah mastura, muhamad barzani gazim, pan ia lun, pauzi abdullah, mohd khairul amri kamarudin and nor azlina abdul aziz.  (2010).  modeling the impacts of ringlet reservoir on downstream hydraulic capacity of bertam river using xpswmm in cameron highlands, malaysia.  - research journal of applied sciences.  5(2):47-53. 

jaafar, o; mastura, sas; sood, am.  (2009).  land use and deforestation modelling of river catchments in klang valley, malaysia.  - sains malaysiana.  38(5):655-664. 

ahmed, a.n., elshafie, a., karim, o., jaffar, o..  (2009).  evaluation the efficiency of radial basis function neural network for prediction of water quality parameters.  - engineering intelligent systems for electrical engineering and communications.  17(4):221-231. 

ali najah, ahmed elshafie, othman a. karim, othman jaffar.  (2009).  prediction of johor river water quality parameters using artificial neural networks.  - european journal of scientific research.  28(3):422-435. 

s.m.zain, h.basri, f.suja & o.jaafar.  (2002).  land application technique for the treatment & disposal of sewage sludge.  - water science and technology.  46(9): 303-308.