Journals

Yulia, Ruka, Husni Husin, Muhammad Zaki, Nasrullah Razali, Fahrizal Nasution, Muhammad Lathiful Yazil, Yuliana Sy, and S. Syafiie. Enhancing Sustainability through Optimized Adsorption Using a Novel Klason-Lignin-Based Biosorbent Derived from Sugar-Palm Fruit Shells for Efficient Removal of Pb (II) and Cd (II). Energy Nexus (2025): 100398. 

S. Syafiie, Aries Subiantoro, Vivi Andasari, and Fernando Tadeo. "Systems of ODEs Parameters Estimation by Using Stochastic Newton-Raphson and Gradient Descent Methods." arXiv preprint arXiv:2501.12856 (2025). 

S. Syafiie, Multiple-time-delay H∞ controller synthesis for glycemic regulation of a hybrid diabetes system, Mathematical Sciences 18, no. 4 (2024): 669-680. 

T. Bin Nur, D. W. K. Marpaung, S. Syafiie,  Exergy Analysis of Hydrogen-Rich Syngas Production System Utilizing Palm Oil Empty Fruit Bunch using Pyrolysis Connected with Steam Methane Reformer, Journal of Advanced Research Fluid Mechanics and Thermal Sciences, Vol 123, No, 1 2024

Choo, Boon Chong, Musab Abdul Razak, Mohd Zahirasri Mohd Tohir, Dayang Radiah Awang Biak, and Syafiie Syam. An Accident Prediction Model Based on ARIMA in Kuala Lumpur, Malaysia, Using Time Series of Actual Accidents and Related Data. Pertanika Journal of Science & Technology 33, no. 3 (2024). 

Musa, Dayang Nur Sakinah, Hamidah Jamil, Mohd Zahirasri Mohd Tohir, Syafiie Syam, and Ridwan Yahaya. Thermal Decomposition and Combustion Analysis of Malaysian Peat Soil Samples Using Coats Redfern Model-free Method. Pertanika Journal of Science & Technology 32, no. 2 (2024). 

S. Syafiie, Controllers and observer synthesis for linear systems with multiple time-varying delays in range, IFAC Journal of Systems and Control 27 (2024): 100257. 

M. I. Maulana, A. Syuhada, Deendarlianto, S. Syafiie, Numerical Investigation of Archimedes Screw Turbines undel Low-Head Conditions, Journal of Advanced Research Fluid Mechanics and Thermal Sciences, Vol 122, No, 1 2024

Syarifuddin, Husni Husin, Mahidin, Muhammad Zaki, S. Syafiie, Fahrizal Nasution, Ahmadi, Fathullah, and Yuliana Sy. Reutilization of Real Waste Calcium Carbonate (CaCO3) from the Palm Oil Industry (POI) for Palm Kernel and Shell Separation Through Clay Bath Systems. Recycling 9, no. 6 (2024): 103. 

S. Syafiie, Fahd AlHarbi, Abdullah Ali Ashehry and Bassam Hasanain, A New Approach to Stabilize a Diabetes System with a Time-Varying Delay and Disturbance Rejection, Journal of Franklin Institute,361 (1), 543-556

AW Hermansson, S. Syafiie, Bayesian-ANN controller for pH-control, Asean Journal of Process Control, Volume 2, Issue 1, pp 1-6 

S. Syafiie, Fahd AlHarbi, Abdullah Ali Ashehry, Bassam Hasanain, PID and LQG controllers for diabetes system with internal delay: a comparison study, Biomedical Physic and Engineering Express, 9, 035031, 2023 

Andi Mulkan, Nurin Wahidah Mohd Zulkifli, Husni Husin, Ahmadi, Irvan Dahlan and S. Syafiie,  Development of jackfruit (Artocarpus heterophyllus) peel waste as a new solid catalyst: Biodiesel synthesis, optimization and characterization, Process Safety and Environmental Protection, 177, 152 168, 2023. 

Iffah Umairah Zulmajdi, Mohd Zahirasri Mohd Tohir, S. Syafiie, Probabilistic fire simulation assessment using simplified model and zone modelling of a fire scenario, Fire Technology, 58 (5), 3007-3037 

Boon Chong Choo Musab Abdul Razaka, Dayang Radiah binti Awang Biak, Mohd Zahirasri bin Mohd Tohir, and S. Syafiie, A Review on Supervised Machine Learning for Accident Risk Analysis in Malaysia, Process Safety Progress, 42, S1, 2022

Syamsu Nur, Ellin Febrina, Aiyi Asnawi, S Syafiie, Synthesis and Inhibitory Activity of Curculigoside A Derivatives as Potential Anti-Diabetic Agents with β-Cell Apoptosis, Journal of Molecular Structure, Vol 1265, 133292, 2022

Boon Chong Choo, Musab Abdul Razak, Awang Biak Dayang Radiah ,Mohd Zahirasri Mohd Tohir,  S. Syafiie, A review on supervised machine learning for accident risk analysis: Challenges in Malaysia, Process Safety Progress, 2022

 S. Syafiie, H∞ controller and observer synthesis with delay and nonlinear perturbation of double diabetes systems, ISA Transaction, Vol. 111, pp. 24-34, 2021

 Chang Jing Jing and S. Syafiie, Multi-model generalised predictive control for intravenous anaesthesia under inter-individual variability, Journal of clinical monitoring and computing, volume, 35, pp. 1037 - 1045, 2021

Mohamad AzriSukiran, Faisal Abnisa, S.Syafiie, Wan Mohd Ashri Wan Daud, Abu Bakar Nasrin, Astimar Abdul Aziz, Soh Kheang Loh, Experimental and modelling study of the torrefaction of empty fruit bunches as a potential fuel for palm oil mill boilers, Biomass and Bioenergy, Volume 136, May 2020, 105530 

AW Hermansson, S. Syafiie, Offset-free control of a pH system using Multiple Model Predictive Control,  IOP Conference Series: Materials Science and Engineering, 2020, 778, 012072 

S. Syafiie, JJ Chang, M Ait Rami,  General anesthesia regulation using propofol infusion for adult patient administered by a positive system during induction phase, Russian Journal of Biopharmaceuticals,  Vol 12, No 3 (2020)  

S. Syafiie, Nonlinear time varying perturbation stability analysis of a double diabetes system, Mathematics and Computers in Simulation, 166, 2019, 382-394 

AW Hermansson, S Syafiie, An offset-free MPC formulation for nonlinear systems using adaptive integral controller, ISA transactions, 91, 2019, 66-77.

Kian-Fei Hoh, Syafiie Syam , Eng-Tong Phuah and Thomas Shean-Yaw Choong, Computer Modelling of Phase Change Materials Using The Orthogonal Collocation Method, ARPN Journal of Engineering and Applied Sciences, Vol. 13, No. 11, June 2018. 

J. J. Chang, and S. Syafiie, Positive Interval Observer-based State Feedback Controller for Uncertain General Anasthesia System, Indonesia Journal of Electrical Engineering and Computer Science, Vol. 10, No. 3, 2018       

Thitima na Songkhla, Mohd Halim Shah Ismail, Dayang Radiah binti Awang Biak, Jusang Bolong and S. Syafiie, Safety Behavior and Incident Experience of Worker in Gas Stations of Suratthani Province, Thailand, Advanced Science Letters, Vol. 24, No. 1, pp. 1-780, 2018

Saleem Ethaib, R. Omar, M.K. Siti Mazlina, A.B. Dayang Radiah, S. Syafiie, Developing a hybrid PSO – ANN model for predicting glucose and xylose yield for microwave pretreatment and enzymatic hydrolysis of lignocellulosic biomass, Neural Computing and Applications, 2016, https://doi.org/10.1007/s00521-016-2755-0

J. J. Chang, S. Syafiie, Raja Kamil, T. A. Lim, Inter-individual variability in propofol pharmacokinetic/pharmacodynamic (PK/PD) model - A sensitivity analysis, Scholars Journal of Applied Medical Sciences, Vol.-4, Issue-11, 2016

Saleem Ethaib, Rozita Omar, Siti Mazlina Mustapa Kamal, Dayang Radiah Awang Biak, Syafiie Syam, Mohammad Yusof Harun, Microwave-Assisted Pretreatment of Sago Palm Bark,  Journal of wood chemistry and technology, Vol. 37, No. 1, 2016. 

Saleem Ethaib, Rozita Omar, Mustapa Kamal Siti Mazlina, Awang Biak Dayang Radiah, S. Syafiie, Effect of microwave-assisted acid or alkali pretreatment on sugar release from Dragon fruit foliage, International Food Research Journal, Vol 23 (Suppl): s149 – s154, 2016

S. Syafiie, Maryam Valizadeh, Optimal planning of a biofuel supply chain using a multi-criteria optimization model, International Journal of Process Systems Engineering, Vol. 4, No. 1, 2016

Noerhidajat, R. Yunus, Z. A. Zurina, S. Syafiie, V. Ramanaidu and U. Rashid, Effect of high pressurized sterilization on oil palm fruit digestion operation, International Food Research Journal 23(1): 129 – 134, 2016

Saleem Ethaib, Rozita Omar, Mustapa Kamal Siti Mazlina, Awang Biak Dayang Radiah, S. Syafiie, Microwave-assisted dilute acid pretreatment and enzymatic hydrolysis of sago palm bark, Bioresources, Vol. 11, No. 3, pp. 5687 – 5702, 2016

M. Safakar, S. Syafiie, R. Yunus, CFD Analysis of Indoor Chlorine Gas Dispersion Storage: Temperatures, Wind Velocities and Ventilation Effects Studies, Asean Journal of Chemical Engineering, Vol. 16. No. 1, 01 – 14, 2015

R. F. Alicia, S. Syafiie, Consequence Model of Contamination of Ammonia in Sewage  wastewater, International Journal of Scientific Research and Development, Vol 2. No. 13, pp. 132 – 138, 2015

AW Hermansson, S. Syafiie, Model predictive control of pH neutralization processes: A review, Control Engineering Practice 45, 98-109, 2015

Jing Jing Chang, S. Syafiie, Raja Kamil Raja Ahmad, and Thiam Aun Lim, Automation of Anaesthesia: A Review on Multivariable Control, Journal of clinical monitoring and computing 29 (2), 231-239, 2015

Noerhidajat, R. Yunus, Z.A. Zurina, S. Syafiie, T.S. Chang, Modeling and simulation of heat and mass transfer in oil palm fruit digestion process, Journal of Emerging Trends in Engineering and Applied Sciences 6 (2), 136-143, 2015. 

H. Amirkhani, R. Yunus, U. Rashid, S.F. Salleh, A.B.D. Radhiah, S. Syafiie, Low-Temperature Dilute Acid Hydrolysis of Oil Palm Frond, Chemical Engineering Communications 202, 1235 – 1244, 2015. 

S. Syafiie and Chia Yaw Kwan, A Comparative Study of MPC using Active-Set and Interior Point Methods for Controlling Nonlinear pH Process, Jurnal Rekayasa Kimia dan Lingkungan, Vol. 10, No. 1, pp. 15 – 23, 2014

M. H. S. Ismail, S. Dalang, S. Syafiie, S. Izhar, A study on zeolite performance at different type of ponds in palm oil mill effluent (POME) treatment, Journal of Water Resource and Protection, 5, 18-27, 2013

S. Syafiie, F. Tadeo, M. Villafin, A. A. Alonso, Learning Controllers for Thermal Sterilization of Canned Foods, ISA transaction, Vol. 50, No. 1, pp. 82–90, 2011

S. Syafiie, F. Tadeo, E. Martinez and T. Alvarez, Model-Free Control Based on Reinforcement Learning of an Oxidation Process for Wastewater Treatment, Applied Soft Computing, Vol. 11, No. 1, pp. 73 – 82, 2011

S. Syafiie, F. Tadeo, L. Palacin, and C. Prada, Modelling of the Pretreatment Section for Dynamic Simulation of Water Production using Reverse Osmosis, International Journal of Management Science and Engineering Management, Vol. 5, No. 1, pp. 24 – 29, 2010

J. Niño, R. De Keyser, S. Syafiie, C. Ionescu, M. Struys , EPSAC Controlled Anesthesia with Online Gain Adaptation, International Journal of Adaptive Control and Signal Processing, Vol.23, pp.455 – 471, 2009.

C. Copot, R. De Keyser, S. Syafiie, S. Orjuela Vargas ,L. Van Langenhove and C. Lazˇar, Automatic carpet wear classification based on support vector machine and Haralick descriptors, Buletinul Institutului Politehnic din Iasi, Automatic Control and Computer Science Section, Tome LV (LIX), Fasc. 4., 2009

S. Syafiie, F. Tadeo and E. Martinez, Model-Free Learning Control of Neutralization Process Using Reinforcement Learning, Engineering Applications Of Artificial Intelligence, Vol. 20, No. 6, Pages 767-782, 2007

S. Syafiie, F. Tadeo, and E. Martinez, Learning to Control pH Processes at Multiple Time Scales: Performance Assessment in a Laboratory Plant, Chemical Product and Process Modeling, vol. 2, no. 1, articles no 7, 2007

M. J. Fuente, C. Robles, O. Casado, S. Syafiie and F. Tadeo, Fuzzy Control of a Neutralization Process, Engineering Applications of Artificial Intelligence, Vol. 19, pp. 905-914, 2006. 

A.L. Ahmad, W.A. Harris, Syafiie, and B.S. Ooi, Removal of dye from waste-water of textile industry using membrane technology, Journal Teknologi, 36(F), pp. 31-44, 2002