Engineering and Technology Journal

Improving The Stability of GRP Routing Protocol

Turkan A. Khaleel; Ahmed M. Fadhil; RanaKh.Sabri

Volume 34, 6A , June 2016, , Page 1142-1149

https://doi.org/https://doi.org/10.30684/etj.34.6A.10

Abstract

More recent works aim at enhancing MANET performance, because of the multiple problems caused by the wireless transmission constraints. The problem that faces the routing protocol is ... Read More ...

Experimental Stability and Thermal Characteristics Enhancement Analysis of Water Based Boehmite Nano fluid

Mohammed Hussein J. Al –Atia; Sarah A. Abed

Volume 33, 7B , August 2015, , Page 1193-1210

https://doi.org/10.30684/etj.2015.116639

Abstract

In this work attempt was made to formulate water based boehmite (AlOOH) nanofluid in one and two steps methods. Boehmite is the first born alumina phase as prepared by sol gel route ... Read More ...

Stability and Convergence of Explicit Difference Method for Solving the 3-Dimensional Two-Sided Fractional Diffusion Equation

Iman Isho Gorial

Volume 30, Issue 5 , March 2012, , Page 832-848

https://doi.org/10.30684/etj.30.5.10

Abstract

In this paper, a numerical solution of the 3-dimensional two-sided fractional diffusion equation has been presented. The algorithm for the numerical solution for this equation is based ... Read More ...

Enhanced Aggregate-Asphalt Adhesion and Stability of Local Hot Mix Asphalt

Alaa H. Abed

Volume 29, Issue 10 , July 2011, , Page 2044-2059

https://doi.org/10.30684/etj.29.10.15

Abstract

A polymer modification is used to improve the fundamental properties of asphalt binders as those properties relate to the performance of asphalt mixtures.Adhesion and cohesion are two ... Read More ... A polymer modification is used to improve the fundamental properties of asphalt binders as those properties relate to the performance of asphalt mixtures.Adhesion and cohesion are two important related properties of asphalt binders that can affect asphalt mixture performance. The first target of this study is to quantify the effects of polymers on the adhesion and cohesion of the binders. Two types of stones are used in this study, limestone and sandstone. The pneumatic adhesion tensile tester (PATTI) is used to measure the pull-off tensile strength in Wisconsin University, it is found that the tensile strength between limestone and styrene butadiene styrene (SBS) polymer increase 26% to 55% as using 2% and 4% of SBS respectively, while increase 54% to 76% when use 2% and 3.5% of Functionalized Polyethylene (PE) polymer respectively. For sandstone, 2% and 4% of SBS causes increasing the strength 5% and 18% respectively, while these values becomes 29% and 51% for asphalt binder modified with 2% and 3.5% of PE respectively. The second objective of this paper is to find the effect of the fine aggregate and polymer on the stability of the local asphalt mixture. To achieve this target two blends have been selected, the first blend is passing under restricted zone (Sshaped blend) and second blend passing through restricted zone (fine blend). The pressure distribution analyzer (PDA) which is developed to Gyratory Load-cell Plate assembly (GLPA) by asphalt research group in Wisconsin University to measure and evaluate the resistance of mixture to distortion, the (PDA) is placed in the gyratory compactor mold and provide load measure which is recorded simultaneously with deflection, the vertical load and the eccentricity of the load are measured using three load cells placed at the edge of the plate, the measurements are used to calculate the resistive effort (w) as a function of number of gyrations. Functionalized polyethylene (PE) polymer and styrene-butadienestyrene (SBS) are used to show effect of polymers on Construction Force Index (CFI) which is related to the amount of the work done for rising density of the mix to 92%. The results indicated that CFI is reduced by about 68% as using 3.5% of PE, while it is reduced about 42% when using 4% of SBS which give good indication for contractors to use polymers for reducing cost. Resistive effort results show that fine blend has higher stability than coarse (S-shape) blend,all the tests of local asphalt binders are done in the University of Wisconsin-Madison- USA.

Numerical Methods for Fractional Reaction-Dispersion Equation with Riesz Space Fractional Derivative

I. I. Gorial

Volume 29, Issue 4 , March 2011, , Page 709-715

https://doi.org/10.30684/ etj.29.4.6

Abstract

In this paper, a numerical solution of fractional reaction-dispersion equation with Riesz space fractional derivative has been presented. The algorithm for the numerical solution for ... Read More ...

Convergence of The Discrete Classical Optimal Control Problem To The Continuous Classical Optimal Control Problem Including A Nonlinear Hyperbolic P.D. Equation

Jamil A. Ali Al-Hawasy

Volume 28, Issue 14 , July 2010, , Page 4687-4702

https://doi.org/10.30684/etj.28.14.2

Abstract

Our focus in this paper is to study the behaviour in the limit of the discrete classical optimal control problem including partial differential equations of nonlinear hyperbolic type. ... Read More ...

Keywords = stability

Improving The Stability of GRP Routing Protocol

Abstract

Experimental Stability and Thermal Characteristics Enhancement Analysis of Water Based Boehmite Nano fluid

Abstract

Stability and Convergence of Explicit Difference Method for Solving the 3-Dimensional Two-Sided Fractional Diffusion Equation

Abstract

Enhanced Aggregate-Asphalt Adhesion and Stability of Local Hot Mix Asphalt

Abstract

Numerical Methods for Fractional Reaction-Dispersion Equation with Riesz Space Fractional Derivative

Abstract

Convergence of The Discrete Classical Optimal Control Problem To The Continuous Classical Optimal Control Problem Including A Nonlinear Hyperbolic P.D. Equation

Abstract