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Journal of Advances in Mathematics and Computer Science

Published by SCIENCEDOMAIN international · ISSN (electronic) 2456-9968

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1,763

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2026 articles

1,763

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10,558

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Articles (1763)

Mathematical Model Formulation of Stakeholder Management Strategies in Software Engineering Projects

Adanma Cecilia Eberendu, Titus Ifeanyi Chinebu & Temple Temple Amakree · Journal of Advances in Mathematics and Computer Science · 2019

Stakeholder management is the process of identifying, analyzing, and engaging people who have either positive or negative influence in a project. The people involved in any project are called stakeholders and all projects have stakeholders irrespective of the size. Managing these...

Open access Research Article 10.9734/jamcs/2019/v31i130097

Optimal Control Analysis of an Age-Structured Malaria Model Incorporating Children under Five Years and Pregnant Women

George Theodore Azu-Tungmah, Francis T. Oduro & Gabriel A. Okyere · Journal of Advances in Mathematics and Computer Science · 2019

In this article, we apply the optimal control theory to a new age-structured malaria model with three infectious compartments for people under five years, over five years and pregnant women. The model is formulated for malaria endemic areas in the world and the following malaria...

Open access Research Article 10.9734/jamcs/2019/v30i630096

Optimal Control of an ”SIR” Epidemic Model in a Chemostat Using Some Suitable Protein Doses

Miled El Hajji · Journal of Advances in Mathematics and Computer Science · 2019

A modified ”SIR” epidemic model is proposed taking into account of suitable protein doses that are applied on the total population as a control to manage a disease outbreak when treatments are not available. The proteins cause a change in behavior resulting in three susceptible c...

Open access Research Article 10.9734/jamcs/2019/v30i630095

A Measure for Evaluating the Degree of Slope Rotatability in Three Level Second Order Slope Rotatable Designs

Chepkemoi Ednah, John Muindi Mutiso & Fredrick Oluoch Nyamwala · Journal of Advances in Mathematics and Computer Science · 2019

Response surface methodology (RSM) often deals with a natural and desirable property rotatability, which requires that, the variance of the predicted response at a point remains constant at all such points that are equidistant from the design center. To achieve stability in predi...

Open access Research Article 10.9734/jamcs/2019/v30i630090

Asymptotic Analysis of the Static and Dynamic Buckling of a Column with Cubic - Quintic Nonlinearity Stressed by a Step Load

A. M. Ette, J. U. Chukwuchekwa, I. U. Udo–Akpan & W. I. Osuji · Journal of Advances in Mathematics and Computer Science · 2019

In this paper, the static and dynamic buckling loads of a viscously damped imperfect finite column lying on an elastic foundation with cubic – quintic nonlinearity but trapped by a step load (in the dynamic case) is investigated analytically. The main objective is to determine an...

Open access Research Article 10.9734/jamcs/2019/v30i630091

Global Existence and Blow-up of Classical Solution for an Attraction-repulsion Chemotaxis System with Logistic Source

Lijun Yan & Zuodong Yang · Journal of Advances in Mathematics and Computer Science · 2019

We consider the following quasilinear attraction-repulsion chemotaxis system of parabolic-elliptic-elliptic type with logistic source  under homegeneous Neumann boundary conditions in a bounded domain `\Omega\subset R^{n}(n\geq2)` with smooth boundary, where `D(u)\geq c_{D}(u+1)^...

Open access Research Article 10.9734/jamcs/2019/v30i630092

Analysis of a Modified Gompertz Model Based on Nonlinear Least Squares Method

Lizhi Yang, Xiwang Xiang, Jiahao Cao & Yuanyuan Zhang · Journal of Advances in Mathematics and Computer Science · 2019

This paper proposes a modified Gompertz model with a constant free term based on the classical Gompertz model. Different from the three-sum method for determining the parameters of classical Gompertz model, this paper construct an optimization problem with the help of nonlinear l...

Open access Research Article 10.9734/jamcs/2019/v30i530089

A Note on Corrections in Approximation of the Modified Error Function

Supriya Mandal, Debabrata Singh & M. M. Panja · Journal of Advances in Mathematics and Computer Science · 2019

This article deals with the evaluation of some integrals involving error-, exponential- and algebraic functions with an objective to derive explicit expressions for the second and third order correction terms in the  approximation of the modified error function, playing important...

Open access Research Article 10.9734/JAMCS/2019/46478

Time-Frequency Coherence and Forecast Analysis of Selected Stock Returns in Ghana Using Haar Wavelet

Rhydal Esi Eghan, Peter Amoako-Yirenkyi, Akoto Yaw Omari-Sasu & Nana Kena Frimpong · Journal of Advances in Mathematics and Computer Science · 2019

Aims/ objectives: The study seeks to analyze the correlation of some selected stock returns with respect to both time and frequency domain, and also to forecast returns using Wavelet Coherence and Wavelet-ARIMA model as alternative to Pearson correlation and ARIMA model respectiv...

Open access Research Article 10.9734/JAMCS/2019/46323