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Open AccessArticle
6 Pages, 814 KB Download PDF

Threshold Multi Split-Row algorithm for decoding irregular LDPC codes

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 88–93, 2017; DOI: 10.25046/aj020514
Abstract:

In this work, we propose a new threshold multi split-row algorithm in order to improve the multi split-row algorithm for LDPC irregular codes decoding. We give a complete description of our algorithm as well as its advantages for the LDPC codes. The simulation results over an additive white gaussian channel show that an improvement in…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
10 Pages, 1,032 KB Download PDF

Models accounting for the thermal degradation of combustible materials under controlled temperature ramps

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 78–87, 2017; DOI: 10.25046/aj020513
Abstract:

The purpose of this conference is to present and analyze di_erent models accounting for the thermal degradation of combustible materials (biomass, coals, mixtures…), when submitted to a controlled temperature ramp and under non-oxidative or oxidative atmospheres. Because of the possible rarefaction of fossil fuels, the analysis of di_erent combustible materials which could be used as…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
8 Pages, 905 KB Download PDF

Simulation of flows in heterogeneous porous media of variable saturation

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 70–77, 2017; DOI: 10.25046/aj020512
Abstract:

We develop a resolution of the Richards equation for the porous media of variable saturation by a finite element method. A formulation of interstitial pressure head and volumetric water content is used. A good conservation of the global and local mass is obtained. Some applications in the case of heterogeneous media are presented. These are…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
6 Pages, 1,090 KB Download PDF

A Study on Isomorphic Properties of Circulant Graphs

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 236–241, 2017; DOI: 10.25046/aj020628
Abstract:

 denotes circulant graph  of order  for a set  where  Circulant graph  is said to have the Cayley Isomorphism (CI) property if whenever  is isomorphic to , there is some  for which . In this paper, isomorphic properties of circulant graphs that includes  Self-complementary circulant graphs;  Type-2 isomorphism, a new type of isomorphism other than already known Adam’s isomorphism of circulant graphs and  Cartesian product and factorization of…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Applied Mathematics (MAP))
Open AccessArticle
7 Pages, 942 KB Download PDF

Petrov-Galerkin formulation for compressible Euler and Navier-Stokes equations

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 63–69, 2017; DOI: 10.25046/aj020511
Abstract:

The resolution of the Navier-Stokes and Euler equations by the finite element method is the focus of this paper. These equations are solved in conservative form using, as unknown variables, the so-called conservative variables (density, momentum per unit volume and total energy per unit volume). The variational formulation developed is a variant of the Petrov-Galerkin…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
8 Pages, 10,700 KB Download PDF

Steel heat treating: mathematical modelling and numerical simulation of a problem arising in the automotive industry

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 55–62, 2017; DOI: 10.25046/aj020510
Abstract:

We describe a mathematical model for the industrial heating and cooling processes of a steel workpiece representing the steering rack of an automobile. The goal of steel heat treating is to provide a hardened surface on critical parts of the workpiece while keeping the rest soft and ductile in order to reduce fatigue. The high…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
10 Pages, 495 KB Download PDF

Degenerate \(p(x)\)-elliptic equation with second membre in \(L^{1}\)

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 45–54, 2017; DOI: 10.25046/aj020509
Abstract:

In this paper, we prove the existence of a solution of the strongly nonlinear degenerate \(p(x)\)-elliptic equation of type: \(\mathcal{(P)}\left\{\begin{array}{rl} - div\; a(x,u,\nabla u) +g(x,u,\nabla u)& = f \quad in \;\Omega, \\ u = 0 \quad on \quad \partial\Omega, \end{array}\right.\) where \(\Omega\) is a bounded open subset of \( I\!\!R^{N}, N\geq 2, a\) is a…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
7 Pages, 1,695 KB Download PDF

Comparison of K-Means and Fuzzy C-Means Algorithms on Simplification of 3D Point Cloud Based on Entropy Estimation

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 38–44, 2017; DOI: 10.25046/aj020508
Abstract:

In this article we will present a method simplifying 3D point clouds. This method is based on the Shannon entropy. This technique of simplification is a hybrid technique where we use the notion of clustering and iterative computation. In this paper, our main objective is to apply our method on different clouds of 3D points.…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
6 Pages, 964 KB Download PDF

Travelling Wave Solutions of Coupled Burger’s Equations of Time-Space Fractional Order by Novel (Gʹ/G)-Expansion Method

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 4, Page # 8–13, 2017; DOI: 10.25046/aj020402
Abstract:

In this paper, Novel (Gʹ/G)-expansion method is used to find new generalized exact travelling wave solutions of fractional order coupled Burger’s equations in terms of trigonometric functions, rational functions and hyperbolic functions with arbitrary parameters. For the conversion of the partial differential equation to the ordinary differential equation, complex transformation method is used. Novel (Gʹ/G)-expansion…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
19 Pages, 1,833 KB Download PDF

Operational Efficiencies and Simulated Performance of Big Data Analytics Platform over Billions of Patient Records of a Hospital System

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 1, Page # 23–41, 2017; DOI: 10.25046/aj020104
Abstract:

Big Data Analytics (BDA) is important to utilize data from hospital systems to reduce healthcare costs. BDA enable queries of large volumes of patient data in an interactively dynamic way for healthcare. The study objective was high performance establishment of interactive BDA platform of hospital system. A Hadoop/MapReduce framework was established at University of Victoria…

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(This article belongs to the SP2 (Special Issue on Computer Systems, Information Technology, Electrical and Electronics Engineering 2017) & Section Applied Mathematics (MAP))

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