Dr. APANAPUDOR, S. JOSHUA (ASSOCIATE PROFESSOR)

Email: jsapanapudor@delsu.edu.ng

• Area of Specialization: Optimization/Optimal Control Theory/Numerical Analysis/Probability and Stochastic Processes
• Department of Mathematics


• Dr. Joshua Sarduana Apanapudor is an Isokoman from Delta State of Nigeria. I grew up to love Mathematics from the primary school with the mental drills that was always on every Mathematics lesson. With this zeal, I was admitted into St. Michael's College Oleh, for a Teacher's Grade II certificate. However this passion was almost destroyed by the curriculum of the Teacher's programme which demands the teaching of only Arithmetic processes instead of the entire syllabus of Mathematics. With the assistance of our Mathematics teacher Late Mr Ebireri (from Orerokpe) who often engage us in private lessons, I made Mathematics as an optional paper in our final year exam and WAEC and later got admission into the University to read Economics. However, the passion made me change the course to Mathematics and graduated as the best student. This paved way for my employment as a graduate assistant by the Bendel State University, Ekpoma. After youths service, I proceeded for a Postgraduate diploma programme in Computer Science because I wanted to read Numerical Analysis, while teaching. The poor status of the academic staff then, drove us to do MBA, with the intention of changing job but this didn’t come as expected. Hence, I enrolled for Master of Science in Industrial Mathematics after the MBA programme. Graduating as the best student in the Department of Mathematics, I got admission immediately for my Ph.D in UniBen. For some obvious reasons, I changed to Ekiti State University, Ado – Ekiti, where I obtained the Doctor of Philosophy in Mathematics, in Optimization instead of Numerical Analysis. My current area of research is in Optimization/Optimal Control Theory. I have to my credit a good number of journal articles both local and international. Dr. Joshua Sarduana Apanapudor, is married to his lovely wife Lady Ogechi Livina Apanapudor and we are blessed with five beautiful angels.

My Publications
1. Apanapudor, J.S. and Izevbizua, O (2018) On Optimal Control of Linear Systems with random time delay over a partitioned interval., Nigerian Journal of Science and Environment, Publication of Faculties of Science and Agriculture, Delsu, Abraka
   Vol. Vol. 16(I) Pages: 202 – 213
   
   
2. Olaosebikan, T. E., Adebayo, K.J. and Apanapudor, J. S. (2015 ) On derivation of Numerical Implementation of the Penalty Function Method Imbedded in Conjugate Gradient Method Algorithm, , Journal of Research in Applied Mathematics
   http://www.questjournals.org/jram/papers/vol2-issue5/A250106.pdf Vol.Volume 2, Issue 5 Pages: 01 – 06
   
   
3. Aderibigbe, F.M. and J.S. Apanapudor (2014) Computing Techniques for the Conjugate Search Directions of the Extended Conjugate Gradient Method Algorithm for Optimal Control Problems,, IOSR Journals of International Organization of Scientific Research, Journal of Mathematics
   http://www.iosrjournals.org/iosr-jm/papers/Vol10-issue3/Version-4/E010342333.pdf Vol.Vol. 10, Issue 3 Pages: 23 – 33.
   
   
4. A. O. Atonuje and J. S. Apanapudor (2017) Almost Sure Exponential Stochastic Stabilization Of First Order Neutral Delay Differential Equations With Positive And Negative Coefficients , pp , Transactions of NAMP
   e.nampjournals.org/product-list.php?pg1-cid96.html Vol.Vol. 5,(Sept and Nov., 2017) Pages: 27 – 32
   
   
5. APANAPUDOR, J. S. and OKONTA, P.N. (2002) On the accuracy and stability of certain LMMs of Numerical solution of IVP in ODEs, Nigerian Journal of Mathematics and Applications
   Vol. Vol. 15 Pages: 136 – 151
   
   
6. APANAPUDOR, J. S. (2006) Applicability of discrete time optimal control models to water resources engineering and management, Journal of Research in Physical Sciences
   Vol. Vol. 2, No. 3. Pages: 37 – 42
   
   
7. APANAPUDOR, J. S. and OTUNTA, F. O. (2008) The construction of a hybrid operator S , Journal of Institute of Mathematics and Computer (Mathematics Series)
   India, (Accessed and reviewed cover to cover by MathSciNet provided by American Mathematical Society; http://www.ams.org/mathscinet/search/publications/ Zentrablatt Math (ZBMATH) provided by European Mathematical Society and Springer; www.zentrablatt-math-org/zmath/en/journals/search/) Vol.Vol. 21, No. 2 Pages: 61 – 71
   
   
8. IZEVBIZUA, O. AND APANAPUDOR, J. S. (2019) Total revenue function for non-regular fixed lifetime inventory system , African Journal of Mathematics and Computer Science Research (AJMCSR)
   https://www.researchgate.net/publication Vol.Vol. 12(2) Pages: 24 - 30
   
   
9. APANAPUDOR, J.S.,T.E.OLAOSEBIKAN andJ.O. OLUBUNMI (2018) Comparative Study of a Developed one – step Numerical Method , Technical Transactions( The journal of the Nigerian Institution of Production Engineers)
   Vol.Vol. 22 Pages: 1-5
   
   
10. J.S. APANAPUDOR (2019) Impact of the penalty constant on the minimization of Optimization problems Nigerian Journal of Science and Environment,, pp. ., Nigerian Journal of Science and Environment,
    Vol. Vol. 17(1) Pages: 106 -116
    
    
11. J.S. APANAPUDOR (2018) Regulators theory in system interactions and Optimal Control, The Journal of the Nigerian Institution of Production Engineers
    Vol. Vol. 22 Pages: 106 -116
    
    
12. APANAPUDOR, J. S. (2007) Properties of the control operator H in the extended conjugate gradient method for discrete optimal control problems , Journal of Institute of Mathematics and Computer (Mathematics Series)
    India, https://www.researchgate.net/publication/269024054_title Vol.Vol. 20, No. 3 Pages: 165 – 177
    
    
13. APANAPUDOR, J. S. and EMENONYE, C. (2013) Hybridization of certain techniques in combinatorial Optimization Vol. 65 pp. 19836 – 19839, Elixir International Journal of Computer Science and Engineering,
    https://www.elixirpublishers.com/articles/1386394199_65%20(2013)%2019836-19839.pdf Vol. Vol. 65 Pages: 19836 – 19839
    
    
14. Izevbizua O and Apanapudor J (2019) Comparing the Sensitivity of Quantity Based and Useful Lifetime Based Fixed Lifetime Inventory Models to Changes in Costs, Australian Journal of Basic and Applied Sciences
    http://ajbasweb.com/old/ajbas/2019/August/1-7(1).pdf Vol.13 Pages: 1-7
    
    
15. J. S. Apanapudor, F.M.Aderibigbe and F.Z. Okwonu (2020) An Optimal Penalty Constant for Discrete Optimal Control Regulator Problems, Journal of Physics, published under licence by IOP publishing Ltd
    https://www.researchgate.net/publication/342274248_An_Optimal_Penalty_Constant_For_Discrete_Optimal_Control_Regulator_Problems Vol.1529(2020)042073 Pages: 1-11
    
    
16. Izevbizua, O. and Apanapudor J. S. (2019) Implementing Fries Model for the Fixed Inventory System, Springer Nature Journal of Operation Research (OPSEARCH)
    https://link.springer.com/article/10.1007/s12597-019-00403-1 Vol.57 Pages: 376–390
    
    
17. Apanapudor, J. S. and Aderibigbe, F. M. (2014) On the Extended Conjugate Gradient Method (ECGM) algorithm for discrete optimal control problems and some of its features, IOSR Journal of Mathematics (IOSR-JM), Egypt
    http://www.iosrjournals.org/iosr-jm/papers/Vol10-issue3/Version-4/D010341622.pdf Vol.10(3)(Version IV) Pages: 16-22
    
    
18. Okwonu, F.Z. and J.S. Apanapudor (2019) The Statistical Value of Water Transport: A Preliminary Study of Niger Delta Creek, Journal of Data Research
    http://www.itspoa.com/VkUpload/202001151225408479.pdf Vol.3 Pages: 41-50
    
    
19. Aderibigbe, F. M and Apanapudor, J. S. (2015) On The Justification of the Extended Conjugate Gradient Method (ECGM) Algorithm for Optimal Control Problems, Quest Journal of Research in Applied Mathematics
    http://www.questjournals.org/jram/papers/vol2-issue5/B250713.pdf Vol.2(5) Pages: 7-13
    
    
20. Apanapudor, J. S. (2010) On the applications of discrete Time Optimal Control Concepts to Economic Problems, Journal of Nigerian Association of Mathematical Physics
    https://www.ajol.info/index.php/jonamp/article/view/90986 Vol.16 Pages: 493-502
    
    
21. Mamadu, E. J. and Apanapudor, J. S. (2016) Variation Iteration Decomposition Method for Analytic solution of Gas Dynamic Equation, Transactions of the Nigeria Association of Mathematical Physics Journal
    http://e.nampjournals.org/product-info.php?pid3199.html Vol.4 Pages: 57-60
    
    
22. Apanapudor J. S. and Okwonu F. Z (2010) On the application of Pontryagin’s Principle (PMP) to Chattering Control Problem, International Journal of Numerical Mathematics
    https://www.researchgate.net/publication/344727303_ON_THE_APPLICATIONOF_PONTRYAGIN'_S_MINMUM_PRINCIPLE_PMP_TO_CHATTERING_CONTROL_PROBLEM Vol.5(1) Pages: 168-185
    
    
23. Izevbizua, O. and Apanapudor, J.S. (2018) Fixed Lifetime Inventory System with Two orders and stochastic demand, ABACUS, the Journal of the Mathematical Association of Nigeria
    https://www.researchgate.net/publication/344727539_FIXED_LIFETIME_INVENTORY_SYSTEM_WITH_TWO_ORDERs_AND_STOCHASTIC_DEMAND Vol.45(1) Pages: 66-72
    
    
24. Apanapudor, J. S. (2010) A Numerical solution to Initial Value Problem (IVP) using modified predictor – corrector methods, Nigeria Journal of Mathematics and Applications
    https://www.researchgate.net/publication/344727734_ON_A_NUMERICAL_SOLUTION_OF_INITIAL_VALUE_PROBLEMS_USING_THE_MODIFIED_PREDICTOR-CORRECTOR_METHODS Vol.20 Pages: 116-123
    
    
25. Apanapudor, J. S. and Otunta, F. O. (2005) On the convergence of the extended conjugate gradient method for discrete optimal control problems, Journal of Nigerian Association of Mathematical Physics
    https://www.researchgate.net/publication/272330880_On_the_convergence_of_the_extended_conjugate_gradient_method_for_discrete_optimal_control_problems_DOCP Vol.9 Pages: 493-500
    
    
26. Apanapudor J. S. and Tsetimi J. (2019) On stochastic bellman equation: using conditional Certainty property expectations, FUW Trends in Science and Technology
    http://www.ftstjournal.com/Digital%20Library/51%20Article%2025.php Vol.5(1) Pages: 126-129
    
    
27. Apanapudor, J. S. (2013) On the Optimal look at express line performance, Nigerian Journal of Science and Environment
    http://www.universityjournals.org/journal/NJSE/article-abstract/17B4E921 Vol.12(1) Pages: 140-147
    
    
28. Apanapudor J. S. and Okwonu F. Z (2010) On the Application of Sylow Theorem to Finite p-Group and Metacyclic p-Group (p-ODD), International Journal of Numerical Mathematics
    https://www.researchgate.net/publication/344727848_ON_THE_APPLICATIONS_OF_SYLOVW_THEOREMM_TO_FINITE_p-GROUP_AND_METACYCLIC_p-GROUPS_p-ODD Vol.5(3) Pages: 369 - 383
    
    
29. Friday Zinzendoff Okwonu, Nor Aisha Ahad, Joshua Sarduana Apanapudor and Festus Irimisose Arunaye (2021) Robust Multivariate Correlation Techniques: A Confirmation Analysis using Covid - 19 Data Set, Pertanika Journal of Science and Technology /
    https://doi.org/10.47836/pjst.29.2.16 Vol.29(2) Pages: 999 - 1015
    
    
30. Tsetimi, J., Atonuje, A. O., Apanapudor, J. S. and Mamadu, E. J. (2021) Dataset on Customer's Perception Ratings on Problems with electricity distribution in Metropolitan Lagos, South-West Nigeria, Ciencia e Tecnica Vitivinicola Journal / Web of Science
    ISSN -2416 -3953 Vol.Vol.36(n.5) Pages: Page 2 - 14
    
    
31. J.S.Apanapudor, O. Izevbizua & F.Z. Okwonu (2021) A Survey of Some Approximation Methods in Mathematical Physics., FUW TRENDS IN SCIENCE & TECHNOLOGY JOURNAL
    www.ftst.journal.com Vol.vol .6. No.2. Pages: 451 - 457
    
    
32. Friday Zinzendoff Okwonu, Nor Aishah Ahad, Joshua Sarduana Apanapudor and Festus Irimisose Arunaye (2020) Covid-19 Prediction Model(Covid 19-PM) for Social Distancing: The Height Perspective, Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences, ISSN: 2518-4253(online)
    https://doi.org/10.47836/pjst.29.2.16 Vol.Vol. 57 (4) 1-3 Pages: Page 2 - 14
    
    
33. Izevbizua,O. and Apanapudor, J. S. (2022) A New Ordering Policy for the Fixed Lifetime Inventory System, Australian Journal of Basic and Applied Sciences
    https://doi.org/10.22587/ajbs.2022.16.3.1 Vol.16(3) Pages: 1-7
    
    
34. Newton I. Okposo, Emmanuel Addai, Joshua S. Apanapudor, J.F. Gomez-Aguitar (2023) A study on a monkeypox transmission model within the scope of fractal-fractional derivative with power-law kernel, The European Physical Journal Plus
    https.//doi.org/10.1140/epjp/s13360-023-04334-1 Vol.(2023) 138-684 Pages: 138-684
    
    
35. Fiday Zinzendoff Okwonu, Nor Aishah Ahad, Innocent Ejiro Okoloko, Joshua Sarduana Apanapudor, Saudi Ahmad Kamarunndi and Festus Irimisose Arunayee (2022) Robust Hybrid Classification Methods and Applications, Pertanika Journal of Science and Technology
    https://www.pertanika.upn/edu.my/ Vol.30(4) Pages: 2831-2850
    
    
36. Apanapudor, JS and Olowu, OO (2023) The fixed lifetime inventory system with two products having the same shelf life, International Journal of Statistics and Applied Mathematics
    https://dx.doi.org/10.22271/maths or https://www.mathsjournal.com Vol.8(5) Pages: 237 - 240
    
    
37. F. Z. Okwonu, N. A. Ahad, J. S. Apanapudor, and F. I. Arunaye (2023) Chi-square and Adjusted Standardised Residual Analysis, ASM Science Journal
    https://doi.org/10.32802/asmscj.2023.985 Vol.18 Pages: 1 - 11
    
    
38. Iweobodo, D.C., Njoseh, I.N. and Apanapudor, J. S. (2023) A New Wavelet-based Galerkin Method of Weighted Residual Function for the Numerical Solution of One-dimensional differential Equations, Mathematics and Statistics
    DOI:10.13189/ms.2023.110605 Vol.11(6) Pages: 910 - 916
    
    
39. Joshua Sarduana Apanapudor, Friday Zinzendoff Okwonu, Nor Aishah Ahad, Nicholas OluwaIe Ogini , Zahayu Md Yusof (2023) Perturbation Analysis and the solution of Linear systems , AIP Conference Proceedings
    https://doi.org/10.1063/5.0179165 Vol.2896,030001 Pages: 030001 - 6
    
    
40. Apanapudor, J.S.; Umukoro, J.; Okwonu, F.Z. and Okposo, N. (2023) Optimal Solution Techniques for Control Problems of Evolution Equations, Science World Journal
    https://dx.doi.org/10.4314/swj.v18i3.27 Vol.18(3) Pages: 503 - 508
    
    
41. Stanley Ejiro Omokoh, Sunday Amaju Ojobor , Joshua Sarduana Apanapudor (2023) Using R - programming in the study of correlation coefficients in epidemiology, AIP Conference Proceedings
    https://doi.org/10.10635/5.0163565 Vol.2872 Pages: 020014 - 9
    
    
42. Apanapudor, J.S. Akporido, D.K. and Okwonu, F. Z. (2023) On the Generalized Minimum Cost flow Problem: An application in Natural Gas Distribution Networks, FUW TRENDS IN SCIENCE AND TECHNOLOGY JOURNAL
    https://www.ftstjournal.com Vol.vol. 8 Pages:
    
    
43. J.S. Apanapudor, F.Z. Okposo, E.O. Maduku, & O. Izevbizua (2023) Solvability and Uniqueness of Solutions of two dimensional Optimization Problems, FUW TRENDS IN SCIENCE AND TECHNOLOGY JOURNAL
    https://www.ftstjournal.com Vol.vol. 8(1) Pages: 182 - 187
    
    
44. Friday Zinzendoff Okwonu, Joshua Sarduana Apanapudor, and Maduku, Edith Omamuyovwi (2023) On the Comparative Analysis of Estimation Procedures, FUW TRENDS IN SCIENCE AND TECHNOLOGY JOURNAL
    https://www.ftstjournal.com Vol.8(2) Pages: 163 - 170
    
    
45. Ossai-ugbo Ifeanyi Marcus* , Okposo Newton Ighomaro and Apanapudor Joshua Sarduana (2024) Mathematical Modeling of Intra Communal Violence and Risk-Level Analysis. Case Study: Obiaruku Community in Delta State, Nigeria, Asian Journal of Probability and Statistics
    DOI: 10.9734/AJPAS/2024/v26i3599, Article no.AJPAS.113996 Vol.Volume 26, Issue 3 Pages: Page 44-66