Vol. 41 (2017) | Journal of the Nigerian Association of Mathematical Physics

Uniform asymptotic stability for the perturbations of linear delay systems

Celestin A. Nse

7-10

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Necessary and sufficient conditions for the target set of nonlinear infinite space of neutral functional differential systems with distributed delay in the control to be on the boundary of the attainable set

P.A. Oraekie

21-26

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Homotopy perturbation algorithm using laplace transform for linear and nonlinear ordinary delay differential equation

W. Lawal Oluwafemi, C. Loyinmi Adedapo , O.S. Sowunmi

27-34

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Optimal control approach on Hepatitis B model with vaccinations

A.K. Dotia, M.O. Ibrahim, A.U. Jos

41-48

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Optimal test strategies for HBV-HIV co-infection model

A.K. Dotia, M.O. Ibrahim, A.U. Jos

49-56

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Preventive and curative control for terrorism

K.B. Akande , M.O. Ibrahim

57-70

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Network models in optimization and their applications in practice: A case study of Nigeria Bottling Company

J.I. Adindu-Dick

71-78

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Exact solution of undamped and unforced duffing equation using Jacobi’s Elliptic Function

E.O. Eze, C.O.D. Udaya, R.N. Okereke, U.E. Obasi

79-84

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Application of Wiener-Hopf Technique to the solution of non-homogeneous singular integral equation

E.E. Onugha , E.N. Erumaka, C.N. Obi

85-88

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Application of Lyapunov Functions to some nonlinear third order differential equations

R.N. Okereke

89-98

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Wiener-Hopf Technique in solution of homogeneous singular integral equation

E.E. Onugha, C.N. Obi

99-102

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Riemann-Green Function for the solution of hyperbolic partial differential equations

E.E. Onugha, E.N. Erumaka, J.A. Eze

103-108

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Back order inventory model for deteriorating items

H.I. Ojarikre

109-116

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Hardy space and essential spectrum of an operator

M.N. Hounkounou, A. Mand Kassim, A. Anjorin

117-122

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Comparison of response of rayleigh beams to moving loads for calculated and arbitrary values of rotary inertia correction factor

E. Ayankop-Andi, H.O. Uzuazor

123-130

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Asymptotic analysis of the dynamic stability of a viscously damped elastic model structure under step load

N.O. Onuoha , A.M. Ette

131-140

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Transformation of explicit shift schedule model to its implicit equivalent

O. Igbinosa, P.O. Ekoko

141-152

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Neutron scattering in a continuous magnetic field band

N.C. Maduka, I.F. Okoye, I.I. Ajibade, K.A. Murana

153-156

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Temperature dependent electronic specific heat of semiconductor quantum well nanostructure

A.S. Njapba, E.O. Odoh

157-166

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Assessment of radiological health hazards from measured activity concentrations in soil samples around Gbose Quarry Omu-aran, Kwara State

A.A. Oni, W.I. Fawole, A.U.U. Ocheni

167-172

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Determination of selected heavy metals and human health risk assessment in fishes from Kiri Dam and River Gongola, Northeastern Nigeria

M.M. Orosun , P. Tchokossa, E.O. Odoh , R.O. Orosun, I.B. Mark, F.C. Akinyose, S.O. Ige, K.A. Yusuf, V.O. Oduh

173-180

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Heavy element determination in kohl cosmetics using energy dispersive X-Ray Fluorescence Analysis (EDXFA) For Risk Assessment

S.A. Muhammad

181-188

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Parametrisation of effective hygroscopic growths, kelvin effects and water activities of atmospheric aerosols

M.D. Audu, B.I. Tijjani, U.M. Gana

189-194

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Interpretation of spectral depth and upward continuation analysis of sub-surface structures in parts of Borno Basin, Northeastern Nigeria, using aeromagnetic data

O. Ajana, J.K. Rai, E.O. Omokhuale

195-200

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Investigation of the technological properties of some unfired clay deposits in Sokoto State

O. Ajana, O.O. Ishaq, E.O. Omokhuale

201-204

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Hydrocarbon fluids identification using rock properties crossplots

R.C. Nwankwo

205-210

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An application of trend analysis of some selected petroleum products

Ibrahim Yusuf Ibrahim, Shehu Bala

211-214

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Statistical investigation of the effects of control factors on the removal of lead from contaminated agricultural soil using Proteus Mirabilis

E. Atikpo , M.O. Ezugwu

215-222

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Comparative analysis of the effect of nonspherical disturbances on the OLS and OLSA estimators using Monte Carlo

David Adiele

223-228

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Improving the performance of Model Robust Regression (MRR2) method using new adaptive mixing parameters and a modified penalized error sum of squares

E. Edionwe , J.I. Mbegbu, W.A. Iguodala

229-240

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Determination of factors that influence child mortality in Agogo-Ide Area Obantoko, Ogun State

A.A. Amalare , A.O. Ajayi, O.R. Olaoye

241-250

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Multivariate extension to models of sudoku square design using real-life data

A. Shehu, A. Danbaba, S.U. Gulumbe

251-260

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Signal model for prediction of exchange rates

S.O.N. Agwuegbo , E.E. Onugha , A.A. Akintunde, A.P. Adewole

261-268

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Principal component analysis of the chemical radicals in the water from hand-dug wells in Akure Metropolis, South West Nigeria

A.I. Adeogun , S.O.N. Agwuegbo , G.A. Dawodu , E.E. Onugha , O.K. Akinyomi

269-282

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On odd generalized exponential-rayleigh distribution with its properties and application

A. Yahaya, N. Umar

283-290

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A comparison of some univariate estimators in the presence of outliers

S.A. Ibrahim, M.W. Ibrahim, S.B. Jaiyeola, A.A. Oni

291-296

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Odd generalized exponential inverse-exponential distribution with its properties and application

A. Yahaya, B. Abba

297-304

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Experimental study of the physical and mechanical properties of mortar with partial replacement of cement with snail shell powder

R.O. Edokpia , V.S. Aigbodion

305-310

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Effect of banana peduncle fiber on the mechanical properties of polyester/banana peduncle fiber composites

R.O. Edokpia , V.S. Aigbodion

311-316

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Derivation of empirical model for computing the sorption capacity of Pb(II), Cr(III) and Mn(II) ion adsorption onto zinc chloride activated sawdust

I.R. Ilaboya, E.O. Oti

317-326

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Evaluating the performance of Moringa Oleifera as plant based coagulant for water treatment using statistical Design of Experiment (DOE) and multi–objective optimization

E.O. Oti, I.R. Ilaboya

327-338

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Preferential removal of lead, cadmium and zinc from contaminated agricultural soil by Bacillus Subtilis

E. Atikpo , M.O. Ezugwu

339-346

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Combustion Analysis of Panicum maximum Jacq and Pennisetum purpureum Shumach as energy feedstock

U.M. Ajieh , U.P. Onochie

347-350

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The role of cognitive psychological processes in software requirements elicitation

G.O. Aziken , F.A. Egbokhare

351-358

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Efficient RSA cryptosystem decryption based on Chinese remainder theorem and strong prime

Y.K. Saheed, K.A. Gbolagade

359-364

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Application of geographic information system to the practice of estate agency in Nigeria

P.S. Ogedengbe, A.K.K. Oyetunji

365-382

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Potential benefits of incorporating residential property investment in a mixed asset portfolio

P.S. Ogedengbe, E.O. Alohan

383-396

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A comparative analysis of prepayment meters on selected loads

H.E. Amhenrior, F.O. Edeko, E.A. Ogujor, J.O. Emagbetere

397-406

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Implementation of a GSM-based SMS token recharge system for single phase prepayment energy meter

H.E. Amhenrior, F.O. Edeko, E.A. Ogujor, J.O. Emagbetere

407-412

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A theorized model on the influence of internet usage on academic performances

F.O. Chete , I.A. Adeniyi

413-422

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The investigations of an efficient multi-crystal silicon solar cell

I.F. Okoye, N.C. Maduka

423-432

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Fuzzy inference analysis of petrophysical data

I. Odesanya , J.F. Odesanya

433-440

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Minimization of total production cost using branch and bound integer programming

C.K. Acha , C. Iwuji

457-464

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