Archive:: Mathematical Modelling and Applications:: Science Publishing Group

Volume 1, Issue 2, December 2016

A Hybrid Stabilized Finite Element/Finite Difference Method for Unsteady Viscoelastic Flows

Ahmed Elhanafy, Amr Guaily, Ahmed Elsaid

Issue: Volume 1, Issue 2, December 2016

Pages: 26-35

Received: 10 September 2016

Accepted: 14 October 2016

Published: 21 October 2016

DOI: 10.11648/j.mma.20160102.11

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Abstract: The Oldroyd-B constitutive equation is used for the numerical simulation of unsteady incompressible viscoelastic flows. A novelty treatment is presented for the incompressibility constraint of the incompressible viscoelastic flow by using the modified continuity equation which allows using equal-order interpolation polynomials for all variables. Th... Show More

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Utility of Correlation Measures for Weighted Hesitant Fuzzy Sets in Medical Diagnosis Problems

B. Farhadinia

Issue: Volume 1, Issue 2, December 2016

Pages: 36-45

Received: 22 December 2015

Accepted: 15 February 2016

Published: 28 October 2016

DOI: 10.11648/j.mma.20160102.12

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Abstract: Due to importance of correlation measure in data analysis, some researchers have shown great interest in the concept of correlation measure for extensions of fuzzy sets, in particular, for a new extension known as hesitant fuzzy set (HFS). Recently, an extension of HFS called the weighted hesitant fuzzy set (WHFS) has been developed by Zhang and Wu... Show More

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Effect of Liner Layer Properties on Noise Transmission Loss in Absorptive Mufflers

Mostafa Ranjbar, Maryam Alinaghi

Issue: Volume 1, Issue 2, December 2016

Pages: 46-54

Received: 27 August 2016

Accepted: 2 November 2016

Published: 25 November 2016

DOI: 10.11648/j.mma.20160102.13

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Abstract: The reduction of the emitted noise pollution from the exhaust system of engines is a real challenge for various industries. At this regard, mufflers have been used to reduce the transmitted noise from the engine of vehicles into the surrounding environment. Mufflers are designed to reflect the sound waves produced by the engine in such a way that t... Show More

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On Existence and Uniqueness of Syphilis Model

Abdullahi A. A., Oyeniyi R. B., Akintunde M. A.

Issue: Volume 1, Issue 2, December 2016

Pages: 55-58

Received: 8 September 2016

Accepted: 19 December 2016

Published: 12 January 2017

DOI: 10.11648/j.mma.20160102.14

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Abstract: A good understanding of the transmission dynamics of disease is necessary to proffer solution(s) to syphilis problem. The aim of this research was to use mathematical modelling to understand the intricacies and different approaches to Syphilis screening on epidemic dynamics and the health of MSM. A non-linear mathematical model for the transmission... Show More

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