University of Port Harcourt

Articles in Learned Journals:

1. Nduka, E. C. (1991) Students Degree Project as an Efficient Test Discriminator: Int. J.  Maths. Ed. Sci. Tech. 22, 3 395-401.
2. Nduka E. C. (1992) A Note on the Inversion Theorem. Int. J. Math. Ed. Sci. Tech. 23, 2, 314-316.
3. Etuk U.H. and Nduka E.C. (1993) A Stochastic Model for Manpower Development in an Organization: A Series Queue Approach. Int. J. Math Ed.  Sci. Tech. 24, 2, 177-181.
4. Erondu E. S. and Nduka E. C. (1993).  Computation of Water Quality Index (WQI) for Beneficial Uses: Studies on Water Samples from the New Calabar River. Nig. J. Biotech. 11, 63-68.
5. Erondu E. S. and Nduka E. C. (1993).  A Model for Determining Water Quality Index    for Classification of the New Calabar River at Aluu Port  Harcourt, Nigeria. Int. J. Env. Stud 44, 131-134.
6. Chukwu W. I. E. and Nduka E. C (1993).  Optimal Search Method in Multi-Commodity Flow Problem.  Discovery and Innovation, African Academy of Science, Kenya. 5,3, 265-268.
7. Onuoha G. C. , Adoki A., Erondu E. S. and Nduka E. C. (1994) Microbial Profile of Organically Enriched Freshwater Ponds in South Eastern Nigeria. Int. J Env Stud. 48,  275-282.
8. Nduka E. C. (1995) Testing the Goodness of Approximation of the Mitscherlich Model via its Variants. Int. J. Math. Ed. Sci. Tech. 26, 2,213-217
9. Nduka E. C (1997).  Methods for Discriminating Between Models Int. J. Math Ed. Sci. Tech. 28,3, 317-320.
10. Nduka E. C. and T. A. Bamiduro (1997) A New Generalized Inverse Polynomial for Response Surface Designs. J. Nig. Stat. Assoc. 11, 1, 41-48.
11. Nduka, E. C, T. A. Bamiduro and J. T. Atobatele (1998).  Obtaining Proportion of Optimum Yield Under An Inverse Polynomial Yield-Density Relationship. J.Sci.Res. 4, 1, 1 –2
12. Nduka E.C (1999).  Model Comparisons in Plant-Yield Relationships. Global. J, Pure & Appl. Sci 5, 3, 417 – 419.
13. Nduka E.C and Kalu I.E. (2001).  Strategies for Cost-Effective Disposal of Solid Wastes in Nigeria. Journ of Agric. Sci. Envit. Mgt 5, 3, 5 – 8
14. Nduka E.C and Kalu I.E. (2002). Economic Analysis of Wastes Management in Nigeria. Journ of Agric. Sci. Envit. Mgt. 6,1, 64-68.
15. Nduka E.C. and T.A. Bamiduro (2002). Obtaining Proportion of Optimum Yield When Full Yield is Unattainable. Global Journ. Math. Sci. 1, 1&2, 21-25.    
16. Onuoha,G.C. and  Nduka,E.C.(2002) A Generalized Exponential Model for Determining Water Quality Index (WQI) for the Classification of the Bonny River,Nigeria. J. Agric. Biotech. Environ.,4,(1/2):1-7.  
17. Ogolime, O.J and Nduka, E.C. (2003);  An Alternative Method of Assessing   Students’ Scores in Several Courses.  The Physical Scientist    Vol. 2(1)  1-5.
18. Onuoha,G.C .and Nduka,E.C.(2004); Application of Water Quality Indices for the Classification of the Bonny River-Nigeria. Scientia Africana, Vol.3,2,23-32.
19. Nduka, E.C. and Igabari, J.N.(2007). A Modified Generalized Generating Function. Global J. Math. Sci. 6,2,93-95.
20. Ijomah, M. A. and Nduka, E.C.(2008). Impact  of HIV/AIDS on Nigeria,s Economic Growth. “The Granger Causality Approach” J. Ultra Scitst. of Phy. Sci. India.  20(2), 227-236.
21. Akpan, S. S. and Nduka, E. C.(2008). A Quadratic Programming Model For Selection of Fertilizer Combination For Crop Optimal  Yield Using The Concept of Response Surface Methodology. J. Engr. And Appl. Sci. Pakistan ,3 (7): 569-573.
22. Akpan,S.S. , Nduka, E.C.,and Udo, M.E. (2008): On Modified Lemke    Algorithm For Solving Quadratic Programming Problems. Ultra Science 20(3), 557-566. India.
23. Blessing C. Didia, Ethelbert C. Nduka and Okechukwu Adele,(2009); Stature  Estimation Formulae For Nigerians. J. Forensic Sci. 54 (1), 20-21, USA.
24. John, O. O. and Nduka, E. C. (2009): Quantile Regression Analysis as a Robust Alternative to Ordinary Least Squares. Scientia Africana, 8(2), 61-65.
25. Williams, E. E., Akpan, S. S., Ugbe, T. A. and Nduka, E. C. (2010) : Construction of  Optimal Odd Fractional Designs in Mixed Series Experiment Using Semi Latin Square. J. Maths. Res., 2 (4), 19-22, Canada
26. Akpan, S. S., Udoh, M. E. and Nduka, E. C. (2010) : A Combinatorial Search Technique for Constructing Optimal Designs for Biased Models. J. Maths. Res. 2 (4), 125-129, Canada.
27. Ijomah, M. A. and Nduka, E. C.(2010). Selection In a Multicollinear Data Using Information Criterion. J. Nig. Stats. Assn., 22, 64-75.
28. Igabari, J. N. and Nduka, E. C. (2011). On Some Sampling Formulas For The Two-Type Galton-Watson Processes With Application To Mitochondria DNA. Nig. J. Sci. & Env. Vol. 10 (1  & 2), 180-184.
29. Igabari, J. N. and Nduka, E. C. (2011). On The Left Tail-End Probabilities and the Probability Generating Function. J. Nig. Assoc. Math. Phy., Vol. 18, 345-348.
30. Ogoke, U. P. and Nduka, E. C. (2012). Methods of Analysing Missing Values in a Regression Model. Indian J. Sci. & Tech. 5,(1), 1831-1833.
31. Mbachu, H. I., Nduka, E. C. and Njah, M. E. (2012). Designing a Pseudo R-Squared Goodness- of –Fit Measure in Generalized Linear Models. J.Maths. Res. 4(2), 148-151, Canada.   

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