1. A New Mathematical Model Approach on The Oncolytic Virotherapy Potency

Journal of Mathematics and Computer Science (2025) • Q3 • WoS/Scopus
Publisher: ISR Publications
DOI / Publisher: https://www.isr-publications.com/jmcs/articles-13884-a-new-mathematical-model-approach-on-the-oncolytic-virotherapy-potency
PDF: https://www.isr-publications.com/jmcs/13884/download-a-new-mathematical-model-approach-on-the-oncolytic-virotherapy-potency

2. Tumor–Immune Interaction System with the Effect of Time Delay and Hyperglycemia on the Breast Cancer Cells

Journal of Applied Mathematics and Physics (2023) • Non-Indexed
Publisher: Scientific Research Publishing

Link: https://www.scirp.org/pdf/jamp_2023042814123540.pdf

3. Optimal control strategies for SGLT2 inhibitors as a novel anti-tumor agent and their effect on human breast cancer cells with the effect of time delay and hyperglycemia

Computers in Biology and Medicine (2023) • Q1 • WoS/Scopus
Publisher: Elsevier
DOI: https://doi.org/10.1016/j.compbiomed.2023.107552
PubMed: https://pubmed.ncbi.nlm.nih.gov/37826954/

4. Role of Glucose Risk Factors on Human Breast Cancer: A Nonlinear Dynamical Model Evaluation

Mathematics (2022) • Q1 • WoS/Scopus
Publisher: MDPI
DOI: https://doi.org/10.3390/math10193640

Free PDF: https://www.mdpi.com/2227-7390/10/19/3640

5. Mathematical Modelling of Harmful Algal Blooms on the West Coast of Sabah

Mathematics (2022) • Q1
Publisher: MDPI
PDF: https://www.mdpi.com/2227-7390/10/16/2836

6. Mathematical Models of the Generation of Radiation-Induced DNA Double-Strand Breaks…

MJFAS – Malaysian Journal of Fundamental and Applied Sciences (2022) • Q4
Publisher: Universiti Teknologi Malaysia Press
Link: Not available

7. Tumour–Natural Killer and CD8+ T-Cell Interaction Model with Delay

Mathematics (2022) • Q1
Publisher: MDPI

Link: https://www.mdpi.com/2227-7390/10/13/2193

8. Global Stability and Thermal Optimal Control Strategies for Hyperthermia Treatment

Mathematics (2022) • Q1
Publisher: MDPI
Link: https://www.mdpi.com/2227-7390/10/13/2188

9. LSTM Networks to Improve the Prediction of Harmful Algal Blooms

International Journal of Environmental Research and Public Health (2021) • Q1
Publisher: MDPI
DOI: https://www.mdpi.com/1660-4601/18/14/7650

10. On magnetized Newtonian liquid suspension in single backward facing-step (SBFS) with centrally translated obstructions

Journal of Molecular Liquids (2021) • Q1
Publisher: Elsevier
DOI: https://doi.org/10.1016/j.molliq.2021.116265

11. The Notion of Stability of a Differential Equation and Delay Differential Equation Model of HIV

International Journal of Mathematics and Computers in Simulation (2021)
Link: https://www.naun.org/main/NAUN/mcs/2021/a082002-004(2021).pdf

12. Reconstruction of Chlorophyll-a Data Using DINEOF in Sepanggar Bay

International Journal of Mathematics and Computer Science (2021) • Q3
Link: https://future-in-tech.net/16.1/R-Nadiah.pdf

13. Stability and Sensitivity Analysis of Tumor-Induced Immune Suppression

JARDCS – Journal of Advanced Research in Dynamical and Control Systems (2020)
Scopus
Link: http://doi.org/10.5373/JARDCS/V12SP7/20202232

14. Analysis of Coronavirus COVID-19 Pandemic Model with Discrete Time Delays

JARDCS (2020) • Scopus
Link: http://doi.org/10.5373/JARDCS/V12SP7/20202248

15. Analytical Technique for Neutral Delay Differential Equations with Proportional and Constant Delay

Journal of Mathematics and Computer Science (2020) • Q1
Link: http://dx.doi.org/10.22436/jmcs.020.04.07

16. An Efficient Analytical Approach for Nonlinear System of Advanced Lorenz Model

Science Proceedings Series (2020)
Link: http://eprints.utm.my/89081/

17. Mathematical analysis of plankton population dynamics.

Malaysian Journal of Fundamental and Applied Sciences (MJFAS).  (2020). (WoS, Q4)

18. Analytical Approximation for Logistic Delay Differential Equation.

Malaysian Journal of Fundamental and Applied Sciences (MJFAS). (2020):. (WoS, Q4)

19. A Dual-Aggressive Model of Tumor–Immune System Interactions

iJOE – International Journal of Online & Biomedical Engineering (2019) • Q4
Link: https://doi.org/10.3991/ijoe.v15i10.10877

20. Efficient Analytical Approach for Nonlinear System of DDEs

Computer Science Journal (CS-Journal) (2019) • Q3
Link: https://www.scirp.org/reference/referencespapers?referenceid=2593862

21. Analytical Algorithm for Systems of Neutral DDEs

Applied Mathematics (2019)
Link: https://doi.org/10.4236/am.2019.109054

22. Revised Convexity, Normality, and Stability Properties of FFSSM Model

Soft Computing (2019) • Q2
Publisher: Springer
DOI: https://link.springer.com/article/10.1007/s00500-018-03682-w

23. Fast and Robust Parameter Estimation in Fuzzy Logistic Equations in Population Growth

MATEMATIKA (2019) • Q4
Link: https://doi.org/10.11113/matematika.v35.n2.1164

24. Tumour-Immune Interaction Model with Cell Cycle Effects Including G0 Phase.

MATEMATIKA: Malaysian Journal of Industrial and Applied Mathematics (2018). (Web of Science, Q4)

25. Parameter Estimation for a Model of Ionizing Radiation Effects on Targeted Cells using Genetic Algorithm and Pattern Search Method.

 MATEMATIKA: Malaysian Journal of Industrial and Applied Mathematics (2018): (Web of Science, Q4)

26. Modelling Tumor Growth with Immune Response and Drug Using Ordinary Differential Equations

Jurnal Teknologi (2017) • Q3
Publisher: UTM Press
Link: https://doi.org/10.11113/jt.v79.9791

27. Modelling of Macrophage Interactions in Breast Cancer by PDE

MJFAS (2017) • Q4
Link: https://doi.org/10.11113/mjfas.v13n2.565

28. Application of Fuzzy Logistic Equations in Population Growth with Parameter Estimation via Minimization

MJFAS (2017) • Q4
Link: https://doi.org/10.11113/mjfas.v13n2.564

29. A Reply to “A Simplified Novel Technique for Solving Fully Fuzzy Linear Programming Problems”

Journal of Optimization Theory and Applications (2017) • Q1
Publisher: Springer
DOI: https://link.springer.com/article/10.1007/s10957-017-1088-1

30. Spatial Interaction Image of EEG Signal During Epileptic Seizure

Journal of Mathematics and Statistics (2017) • Q4
Link: https://thescipub.com/journals/jms

31. Numerical Solution for Linear Fuzzy Differential Equation in HIV Infection

E-Proceedings Chemistry (2017)

32. Lie Group Analysis of Second-Order Nonlinear Neutral DDEs

MJFAS (2016) • Q4

33. Lie Group Analysis of Retarded DDEs in Human Postural Balance Model

MJFAS (2015) • Q4

34. Application of Graph Theory on Dioxin-Furan Emission

Advances in Mathematics and Statistical Sciences (2015)

35. Modelling Human Postural Balance Using Neutral DDE

Life Science Journal (2014) • Scopus
Link: Not available

36. Roles of Influential Parameters in the Incineration Process Using Graph Theory

AIP Conference Proceedings (2014) • Scopus

37. Ranking Epileptic Patients’ Intelligence Parameters Using DEA

Life Science Journal (2014) • WoS

38. Ranking DMUs by Interval Efficiency Using Common Set of Weights

Journal of Applied Mathematics (2014) • Q3
Publisher: Hindawi

39 Fuzzy Delay Predator–Prey System: Oscillation of Solutions

International Journal of Mathematical Analysis (2014) • Scopus

40. New Approach to Classify Second-Order Linear DDEs

International Journal of Mathematical Analysis (2014) • Scopus 

41. Fuzzy Delay Tumor Growth with Quiescence Cells

Recent Advances in Mathematics, Statistics & Economics (2014)

42. Symmetric Solution of Fuzzy Linear Systems using Probability Density Function

International Journal of Applied Mathematics and Statistics (2013) • Scopus

43. Ranking Multiple Intelligences of People with Epilepsy Using AHP and DEA

Journal of Emerging Technologies in Web Intelligence (2013) • Scopus

44. An Inverse Feedback Fuzzy State-Space Modeling for Insulin–Glucose Regulation System in Human

Academic Journals (2013) • Scopus

45. Spatial Interaction of EEG Signals Using Fourier & Wavelet

MJFAS (2013) • Scopus

46. EEG Signal of Epileptic Seizure by FFT & Wavelet

Jurnal Teknologi (2013) •WoS  Q3
Publisher: UTM Press

47. A Simplified Novel Technique for Solving Fully Fuzzy Linear Programming Problems

Journal of Optimization Theory and Applications (2013) • WoS Q1

48. Fuzzy Delay Differential Equation In Predator-Prey Interaction: Analysis On Stability Of Steady State

 Lecture Notes in Engineering and Computer Science. (2013) • WoS

• Feedback Fuzzy State Space Modeling and Optimal Production Planning for Steam Turbine of a Combined Cycle Power Generation Plant,

Research Journal of Applied Science 7(2): 100-107, 2012. (Scopus)

• On Structural, Number Theoretic And Fuzzy Relational Properties of Large Multi-Connected Systems of Feedback Fuzzy State Space Models (FFSSM’s)

Journal of Applied Sciences Research. (2012). (Web of Science)

51. Modeling and Optimal Production Planning for Steam Turbine of a Combined Cycle Power Plant

Applied Sciences (2012) • Scopus

• Fully Fuzzy Linear Programming (FFLP) With A Special Ranking Function For Selection of Substitute Activities In Project Management,

International Journal of Applied Science and Technology, ( 2011) • (Web of Science)

• Inverse Model To Determine The Optimal Number of Drops  of RDC Column Using Fuzzy Approach, WSEAS Transaction on Mathematics (2011). (Web of Science)
• A Novel Technique for Visualization Electrical Activities In The Brain During Epileptic Seizure,

Applied Mathematics and Informatics, 2010. (Scopus)

55. A Two Phase Approach for Solving Linear Programming Problems by Using Fuzzy Trapezoidal Membership Functions,

International Journal of Basic & Applied Sciences IJBAS-IJENS Vol: 10 No :06, 2010. (Scopus)

58. 2-Dimensional Fuzzy Numbers in Multi-stage Dynamical System: An Improved Algorithm, MATEMATIKA, Special Edition Part 1,pp. 81-89, Dec 2008. (Web of Science, Q4)
59. On Determination of Input Parameters of The Mass Transfer Process in the Multiple Stages RDC Column by Fuzzy Approach: Inverse Problem, MATEMATIKA, Vol 21, No 2, pp89-100, 2005. (Web of Science, Q4)
60. Use of Neural Network for Modeling of Liquid-liquid Extraction Process in the RDC Column, MATEMATIKA, Vol 19, No.1pp.15-27, June 2003. (Web of Science, Q4)
61. Inverse Modeling of The Mass Transfer Process In The RDC Column by Fuzzy Approach,

Recent Advances In Intelligent Systems and Signal Processing, pp.348-353, 2003.

60. Price Stability : A Delay Differential Equation Model,

 Majalah Himpunan Matematik Indonesia (MIHMI), Vol. 3, No 1, 1997.

61. Kestabilan Komoditi Tunggal Dengan Menggunakan Kaedah Langsung Lyapunov,

MATEMATIKA, Jilid 11, bil. 2, hlm. 87-94, 1995.

62. Kitaran Harga Dalam Industri Ternakan,

 MATEMATIKA, Jilid 10, bil. 2, hlm. 69-79, 1994.

INDEXED PROCEEDINGS / CONFERENCE 

1. Tumour-Immune Interaction Model with Cell Cycle Effects Including G0 Phase

2018 — Nor Aziran Awang, Normah Maan, Dasuki Sul’ain

2. Parameter Estimation for a Model of Ionizing Radiation Effects on Targeted Cells using Genetic Algorithm and Pattern Search Method

2018 — Hamizah Rashid, Fuaada Mohd Siam, Normah Maan, Rahman W. N. W. A.

3. Analysis of Tumor Populations and Immune System Interaction Model

2015 — Nor Aziran Awang, Normah Maan 

4. Fuzzy Logistic Equation by Polynomial Interpolation

2015 — Nor Atirah Izzah Zulkefli, Normah Maan, Yeak Su Hoe, Nor Afifah Hanim Zulkefli 

5. Classification of Second Order Non-Linear Neutral Delay Differential Equations to Solvable Lie Algebra

2015 — Laheeb Muhsen, Normah Maan

6. Classification of Second Order Non-Linear Retarded Delay Differential Equations to Solvable Lie Algebra

2014 — Laheeb Muhsen, Normah Maan

7. The Notion of Stability of a Differential Equation and Delay Differential Equation Model of HIV Infection of CD4+ T-Cells

2013 — Normah Maan, Izaz Ullah Khan, Nur Atirah Izzah Zulkefli

8. The Existence and Uniqueness Theorems of Fuzzy Delay Differential Equations

2013 — Nur Atirah Izzah Zulkefli, Normah Maan

9. Linear Fuzzy Delay Systems – Analysis on Stability of Steady State

2013 — Khabat Barzinji, Normah Maan, Nor’aini Aris

10. Ranking the Multiple Intelligence for People with Epilepsy in Data Envelopment Analysis

2013 — Vahideh Rezaie, Tahir Ahmad, Masumeh Khanmohammadi, Siti Rahmah Awang, Normah Maan

11. Fuzzy Delay Differential Equation In Predator–Prey Interaction: Analysis On Stability Of Steady State

2013 — Normah Maan, Khabat Barzinji, Nor’aini Aris

12. A Conceptual Framework for Ranking the Multiple Intelligences of People with Epilepsy

2012 — Rezaie V., Ahmad T., Maan N., Awang S. R.

13. Method of Quantitative Imaging Technique

2010 — Amidora Idris, Tahir Ahmad, Normah Maan

14. Molarity Model of Mass Transfer for Extraction In Rotating Disc Contactor (RDC) Column

2010 — Nurul Nadiya Abu Hassan, Jamalludin Talib, Normah Maan

15. Comparison Between Clustering Analysis of Multiple Intelligence Test and EEG Signal of Epileptic Patients

2009 — Amidora Idris, Siti Rahmah Awang, Tahir Ahmad, Rasimah Aripin, Md. Hanip Rafia, Normah Maan, Jafri Malin Abdullah

16. Non-Polar CEEG: Extension of Flat Electroencephalography during Epileptic Seizure

2009 — Amidora Idris, Tahir Ahmad, Normah Maan

17. Fuzzy Number in Determining the Optimal Solution of Multiple Input Multiple Output (MIMO) System

2008 — Normah Maan, Tahir Ahmad

18. Homeomorphism Between Sphere and Cube

2008 — Amidora Idris, Tahir Ahmad, Normah Maan

19. Construction of Homeomorphism Between Generalized Sphere and Cube

2008 — Amidora Idris, Tahir Ahmad, Normah Maan

20. 2-Dimensional Fuzzy Number in Multi-Stage Dynamical System: An Improved Algorithm

2007 — Normah Maan, Tahir Ahmad 

22. On Inverse Problem of the Mass Transfer Process in Multiple Stages RDC Column: Fuzzy Approach

2004 — N. Maan, J. Talib, K. A. Arshad, T. Ahmad

23. On Mass Transfer Process In Multiple Stages RDC Column: Inverse Problem

2003 — Normah Maan, Jamalludin Talib, Khairil Anuar Arshad, Tahir Ahmad

24. Inverse Modeling Of Mass Transfer Process In The RDC Column by Fuzzy Approach

2002 — N. Maan, J. Talib, K. A. Arshad, T. Ahmad

25. Mass Transfer Model of a Single Drop in the RDC Column

2002 — Normah Maan, Jamalludin Talib, Khairil Anuar Arshad

NON-INDEXED PROCEEDINGS / CONFERENCE

1. Solving First-Order Delay Differential Equation by Symmetry Lie Group

2015 — Laheeb Muhsen, Normah Maan

2. Lie Group Analysis of Second-Order Non-Linear Differential Equations with Retarded Argument

2015 — Laheeb Muhsen, Normah Maan

BOOK CHAPTER

1. Statistical Modelling in Medical and Economic Data: Application of High-Order Fuzzy Time Series Forecasting on Price of Crude Oil Data

2024 — Normah Maan, Gan Jian Yong, Emi Shazila Mat Roni, Aniza Akaram

2. Fuzzy Delay Differential Equation in Predator-Prey Interaction: Analysis of Stability of Steady State

2013 — Normah Maan, Khabat Barzinji, Nor’aini Aris

3. Recent Advance in Intelligent Systems and Signal Processing

2003 — Normah Maan, Jamalludin Talib, Khairil Anuar Arshad, Tahir Ahmad

MODULES

1. Fuzzy Set Theory Module

2024- Normah Maan

2. Differential Equations

2018- Normah Maan. Halijah Osman,  Sharidan Shafie & Zaiton Md Isa

4. Discrete Mathematics Module

2010 — Normah Maan

5. Modul Pengajaran Bagi Kursus DSM1173

2002 — Mohd Md Talib, Normah Maan, Nor’aini Aris

TECHNICAL / EXPERT REPORT

1. Improved Forward Modelling of Mass Transfer Process in RDC Column

2004 — Normah Maan, Jamalludin Talib, Khairil Anuar Arshad, Tahir Ahmad

 ENSIKLOPEDIA

1. Kaedah Penghapusan Gauss Jordan — Ensiklopedia Sains dan Teknologi, Jilid Matematik (DBP)

2007 — Normah Maan

THESES

1. Master Thesis

Title: Kestabilan Harga Menggunakan Persamaan Pembeza Lengah
1996 — Normah Maan

2. PhD Thesis

Title: Mathematical Modelling of Mass Transfer in a Multi-Stage Rotating Disc Contactor Column
2005 — Normah Maan

7.2 Papers Presented in Seminars / Papers Published in Proceedings

1. Awang, N. A., Maan, N., & Sul’ain, D.(2018). Tumour–Immune Interaction Model with Cell Cycle Effects Including G0 Phase. Presented at ISMI–ICTAS 2018, 2018.
2. Rashid, H., Siam, F. M., Maan, N., & Rahman, W. N. W. A.(2018). Parameter Estimation for a Model of Ionizing Radiation Effects on Targeted Cells using Genetic Algorithm and Pattern Search Method. Presented at ISMI–ICTAS 2018, 2018.
3. Awang, N. A., & Maan, N.(2015). Analysis of Tumor Populations and Immune System Interaction Model.Presented at the 23rd Malaysian National Symposium on Mathematical Sciences (SKSM23), Johor Bahru, Malaysia, 24–26 December 2015.
4. Zulkefli, N. A. I., Maan, N., Hoe, Y. S., & Zulkefli, N. A. H.(2015). Fuzzy Logistic Equation by Polynomial Interpolation. Presented at the 23rd Malaysian National Symposium on Mathematical Sciences (SKSM23), Johor Bahru, Malaysia, 24–26 December 2015.
5. Muhsen, L., & Maan, N.(2015). Solving First-Order Delay Differential Equation by Symmetry Lie Group.Presented at the International Conference on Applied Analysis and Mathematical Modeling (ICAAMM 2015), Istanbul, Turkey, 2015.
6. Awang, N. A., & Maan, N.(2015). Delay Differential System for Interaction Between Tumor and Immune Responses. Presented at the International Conference on Applied Analysis and Mathematical Modeling (ICAAMM 2015), Istanbul, Turkey, 2015.
7. Muhsen, L., & Maan, N.(2015). Lie Group Analysis of Second Order Non-Linear Differential Equations with Retarded Argument. Presented at the 9th International Conference on Computer Engineering and Applications (CEA ’15), in conjunction with Advances in Mathematics and Statistical Sciences, 2015.
8. Maan, N., & Muhsen, L.(2014). Classification of Second Order Non-Linear Neutral Delay Differential Equations to Solvable Lie Algebra. Presented at the IMG–GT International Conference on Mathematics, Statistics and Its Applications (ICMSA), Kuala Terengganu, Malaysia, 14–16 October 2014.
9. Maan, N., & Muhsen, L.(2014). Classification of Second Order Non-Linear Retarded Delay Differential Equations to Solvable Lie Algebra. Presented at the 22nd Malaysian National Symposium on Mathematical Sciences (SKSM22), Shah Alam, Selangor, Malaysia, 24–26 December 2014.
10. Maan, N., Khan, I. U., & Zulkefli, N. A. I.(2013). The Notion of Stability of a Differential Equation and Delay Differential Equation Model of HIV Infection of CD4+ T-Cells. Presented at the 2013 International Conference on Applied Mathematics and Computational Methods, Venice, Italy, 28–30 September 2013.
11. Zulkefli, N. A. I., & Maan, N.(2013). The Existence and Uniqueness Theorems of Fuzzy Delay Differential Equations. Presented at the 4th ICOWOBAS–RAFSS 2013, Johor Bahru, Malaysia, 3–5 September 2013.
12. Barzinji, K., Maan, N., & Aris, N.(2013). Linear Fuzzy Delay Systems: Analysis on Stability of Steady State.Presented at the 4th ICOWOBAS–RAFSS 2013, Johor Bahru, Malaysia, 3–5 September 2013.
13. Rezaie, V., Ahmad, T., Khanmohammadi, M., Awang, S. R., & Maan, N.(2013). Ranking the Multiple Intelligences for People with Epilepsy in Data Envelopment Analysis. Presented at the 4th ICOWOBAS–RAFSS 2013, Johor Bahru, Malaysia, 3–5 September 2013.
14. Maan, N., Barzinji, K., & Aris, N.(2013). Fuzzy Delay Differential Equation in Predator–Prey Interaction: Analysis on Stability of Steady State. Presented at the World Congress on Engineering (WCE), organised by the International Association of Engineers, London, United Kingdom, 3–5 July 2013.
15. Rezaie, V., Ahmad, T., Maan, N., & Awang, S. R.(2012). A Conceptual Framework for Ranking the Multiple Intelligences of People with Epilepsy. Presented at the International Conference on Statistics in Science, Business, and Engineering (ICSSBE), Langkawi, Malaysia, 10–12 September 2012.
16. Idris, A., Ahmad, T., & Maan, N.(2010). Method of Quantitative Imaging Technique. Presented at the Mathematical Neuroscience Laboratory, RIKEN Brain Science Institute, Japan, 15 January 2010.
17. Abu Hassan, N. N., Talib, J., & Maan, N.(2010). Molarity Model of Mass Transfer for Extraction in Rotating Disc Contactor (RDC) Column. Presented at the 1st Regional Conference on Applied and Engineering Mathematics (RCAEM-I), 2010.
18. Idris, A., Awang, S. R., Ahmad, T., Aripin, R., Rafia, M. H., Maan, N., & Abdullah, J. M.(2009). Comparison Between Clustering Analysis of Multiple Intelligence Test and EEG Signal of Epileptic Patients. In Proceedings of the 5th Asian Mathematical Conference (AMC), Vol. III, pp. 589–596, Kuala Lumpur, Malaysia, 22–26 June 2009.
19. Idris, A., Ahmad, T., & Maan, N.(2009). Non-Polar CEEG: Extension of Flat Electroencephalography during Epileptic Seizure. Presented at the ESciNano Annual Symposium, The Regency Zon Hotel, Johor Bahru, Malaysia, 30 November–1 December 2009.
20. Maan, N., & Ahmad, T.(2008). Fuzzy Number in Determining the Optimal Solution of Multiple Input Multiple Output (MIMO) System. Presented at the International Conference on Computational Intelligence for Modelling, Control and Automation (CIMCA), Vienna, Austria, 10–12 December 2008.
21. Idris, A., Ahmad, T., & Maan, N.(2008). Homeomorphism Between Sphere and Cube. Presented at the Regional Annual Fundamental Science Seminar 2008 (RAFSS 2008), Institut Ibnu Sina, Universiti Teknologi Malaysia, 27–28 May 2008.
22. Idris, A., Ahmad, T., & Maan, N.(2008). Construction of Homeomorphism Between Generalized Sphere and Cube. Presented at the 16th Malaysian National Symposium on Mathematical Sciences (SKSM16), Renaissance Hotel, Kota Bharu, Kelantan, 3–5 June 2008.
23. Maan, N., & Ahmad, T.(2007). 2-Dimensional Fuzzy Number in Multi-Stage Dynamical System: An Improved Algorithm. Presented at the 2nd International Conference on Mathematical Sciences (ICOMS-2), Universiti Teknologi Malaysia, Johor, Malaysia, 2007.
24. Maan, N.(2006). Inverse Modelling of Mass Transfer Process in a Multi-Stage RDC Column. Presented at the Department of Mathematics Seminar, Faculty of Science, Universiti Teknologi Malaysia, Skudai, 8 March 2006.
25. Maan, N., Talib, J., Arshad, K. A., & Ahmad, T.(2004). On Inverse Problem of the Mass Transfer Process in the Multiple Stages RDC Column: Fuzzy Approach. Presented at the International Conference on Inverse Problems: Modeling and Simulation, Fethiye, Turkey, 7–12 June 2004.
26. Maan, N., Talib, J., Arshad, K. A., & Ahmad, T.(2003). On Mass Transfer Process in Multiple Stages RDC Column: Inverse Problem. Presented at the 11th Malaysian National Symposium on Mathematical Sciences (SKSM11), 2003.
27. Maan, N., Talib, J., Arshad, K. A., & Ahmad, T.(2002). Inverse Modeling of Mass Transfer Process in the RDC Column by Fuzzy Approach. Presented at the 7th WSEAS International Conference on Circuits, Systems, Communications and Computers, Corfu Holiday Palace Hotel, Corfu, Greece, 7–10 July 2002.
28. Maan, N., Talib, J., & Arshad, K. A.(2002). Mass Transfer Model of a Single Drop in the RDC Column.Presented at the 10th Malaysian National Symposium on Mathematical Sciences (SKSM10), 2002.
29. Maan, N.(1997). Kestabilan Komoditi Tunggal dengan Menggunakan Kaedah Langsung Lyapunov. Presented at the Department of Mathematics Seminar, Faculty of Science, Universiti Teknologi Malaysia, Skudai, 25 June 1997.
30. Maan, N., & Yaacob, Y.(1996). Kestabilan Harga dalam Industri Ternakan Melibatkan Persamaan Pembeza Lengah. Presented at the 7th Malaysian National Symposium on Mathematical Sciences (SKSM7), 1996.
31. Maan, N.(1995). Persamaan Terbitan Lengah. Presented at the Faculty of Science Postgraduate and Research Seminar, Universiti Teknologi Malaysia, 24–25 October 1995.