The Effect of Liquid Nitriding and Carborizing on Adhesive Wear Resistance of Carbon Steel 1020
The Effect of Liquid Nitriding and Carborizing on Adhesive Wear Resistance of Carbon Steel 1020
Volume 29, Issue 5 , March 2011, Page 231-240

https://doi.org/10.30684/ etj.29.5.17

Abstract
  The aim of this paper is to study the effect of Nitro carburizing on adhesive wear resistance of carbon steel (1020 AISI). Four groups of specimens were manufactured (A, B, C, D) with ...  Read More ...
The Effect of Changing The Shape of An Absorber Plate on The Temperature Distribution of The Storage Solar Collector
The Effect of Changing The Shape of An Absorber Plate on The Temperature Distribution of The Storage Solar Collector
Volume 29, Issue 5 , March 2011, Page 241-250

https://doi.org/10.30684/ etj.29.5.18

Abstract
  This research is a numerical study to determine the impact of changing the shape of absorber plate on the temperature distribution of the solar storage collector used to heat and store ...  Read More ...
Effect of The Rock Size In The Surface on The Cost And Specification of Floor Tiles
Effect of The Rock Size In The Surface on The Cost And Specification of Floor Tiles
Volume 29, Issue 5 , March 2011, Page 251-263

https://doi.org/10.30684/ etj.29.5.19

Abstract
  The floor tiles (mozaek) used largely to finish floor. These are different from kind to kind according to the size of the rock that used in the surface layer with its dimension and ...  Read More ...
Fabrication of Infrared Optical Window
Fabrication of Infrared Optical Window
Volume 29, Issue 5 , March 2011, Page 264-269

https://doi.org/10.30684/ etj.29.5.20

Abstract
  An optical window for mid infrared region (8-12)mm has been fabricated by depositing Yttrium oxide (Y2O3) on zinc selenide (ZnSe) substrate. The effect of accelerating voltages has ...  Read More ...
A Modification of TEA Block Cipher Algorithm for Data Security (MTEA)
A Modification of TEA Block Cipher Algorithm for Data Security (MTEA)

Gaidaa Saeed Mahdi

Volume 29, Issue 5 , March 2011, Page 822-832

https://doi.org/10.30684/ etj.29.5.1

Abstract
  This paper attempts to develop a simple, stronger and safer cryptographic algorithm which would not only be a secure one, but also reduces total time taken for encryption and decryption. ...  Read More ...
Complex Discrete Wavelet Transform-Based Image Denoising
Complex Discrete Wavelet Transform-Based Image Denoising

Hadeel N. Abdullah; Jabir Salman Aziz; Arshad Nadhom Mohammed

Volume 29, Issue 5 , March 2011, Page 833-850

https://doi.org/10.30684/ etj.29.5.2

Abstract
  Dual tree complex discrete wavelet transform is implemented for denoising as an important image processing application. Two wavelet trees are used, one generating the real part of the ...  Read More ...
Derivation of Analytical Expression for Mode-Coherence Coefficients of Uniform-Distributed Wave Propagating Within Different Media
Derivation of Analytical Expression for Mode-Coherence Coefficients of Uniform-Distributed Wave Propagating Within Different Media

Noor Ezzulddin Naji

Volume 29, Issue 5 , March 2011, Page 851-855

https://doi.org/10.30684/ etj.29.5.3

Abstract
  A derivation of an analytical expression for the mode-coherence coefficients of uniform-distributed wave propagating within different homogeneous media – as in case of hyperbolic ...  Read More ...
High Resolution Miniaturized Lens Arrays Scanners and Image Formation Systems For Medical Applications
High Resolution Miniaturized Lens Arrays Scanners and Image Formation Systems For Medical Applications

Samira M. Arif; Mohamed S. Ahmed; Dayah N. Raouf

Volume 29, Issue 5 , March 2011, Page 871-885

https://doi.org/10.30684/ etj.29.5.5

Abstract
  The optical design of miniaturized high resolution micro lens arrays systems MLAs, for scanning and image formation, is achieved. The types of scanner systems that have been handled ...  Read More ...
Effect of Fibers on Some Engineering Properties of Cement and Lime Stabilized Soils
Effect of Fibers on Some Engineering Properties of Cement and Lime Stabilized Soils

Suhail A. Khattab; Ibrahim M. Al-Kiki; Abderrahmane H. Al-Zubaydi

Volume 29, Issue 5 , March 2011, Page 886-905

https://doi.org/10.30684/ etj.29.5.6

Abstract
  Recently, many attempts were made to use metal fiber reinforcements to improve some soil properties. In this research, the effects of fibers on the compaction and mechanical properties ...  Read More ...
Mechanical Properties of High Performance Carbon Fiber Concrete
Mechanical Properties of High Performance Carbon Fiber Concrete

Wasan I. Khalil; Akar Abdulrazaq

Volume 29, Issue 5 , March 2011, Page 906-924

https://doi.org/10.30684/ etj.29.5.7

Abstract
  In this research mechanical properties of high performance carbon fiber concrete are studied. The experimental work includes, producing high performance concrete using superplasticizer ...  Read More ...
A Proposed Equation for the Evaluation of the Nominal Ultimate Bending Moment Capacity of Rectangular Singly Reinforced RPC Sections
A Proposed Equation for the Evaluation of the Nominal Ultimate Bending Moment Capacity of Rectangular Singly Reinforced RPC Sections

Suaad Kh. Ibraheem; Hisham M. Al Hassani

Volume 29, Issue 5 , March 2011, Page 925-934

https://doi.org/10.30684/ etj.29.5.8

Abstract
  Based on compressive stress – compressive strain curves of Reactive Powder Concrete (RPC) which have been established recently in a Ph.D thesis(1), an equivalent bi-linear compressive ...  Read More ...
Speaker Recognition Based on Semantic Indexing
Speaker Recognition Based on Semantic Indexing

Mohammed Sahib Altaei; Khamail Abbas; Marwa Jawad

Volume 29, Issue 5 , March 2011, Page 935-947

https://doi.org/10.30684/ etj.29.5.9

Abstract
  In this paper, a new pitch extraction method is established to be employed in improving the performance of the eigenvoices problem. This required indexing the pitch of the voice in ...  Read More ...
Aerodynamic Parameters Analysis of Transonic Flow Past Unswept and Swept Wings
Aerodynamic Parameters Analysis of Transonic Flow Past Unswept and Swept Wings

Raad Shehab Ahmed

Volume 29, Issue 5 , March 2011, Page 948-960

https://doi.org/10.30684/ etj.29.5.10

Abstract
  The transonic flow past unswept and swept wings has been studied. For this purpose the transonic potential flow equation is solved for inviscid compressible flow. The shock waves are ...  Read More ...
Evaluation of Low Density Parity Check Codes Over Various Channel Types
Evaluation of Low Density Parity Check Codes Over Various Channel Types

Mahmood Farhan Mosleh

Volume 29, Issue 5 , March 2011, Page 961-971

https://doi.org/10.30684/ etj.29.5.11

Abstract
  Low density parity check (LDPC) codes are one of the best error correcting codes in today’s coding world and are known to approach the Shannon limit. As with all other channel ...  Read More ...
Pulse Laser Parameters Effect on Tissue Thermal Damage Zone in Coagulation Process
Pulse Laser Parameters Effect on Tissue Thermal Damage Zone in Coagulation Process

Khalid Salem Shibib; Ayad Zwayen Mohammed; Kholood Hasan Salih

Volume 29, Issue 5 , March 2011, Page 972-985

https://doi.org/10.30684/ etj.29.5.12

Abstract
  Owed to wide use of pulsed lasers in a medical field, a deep understanding of their effects on the temperature increase in tissue and the subsequent tissue thermal damage in a coagulation ...  Read More ...
Constructing a Macro Virus to Upgrading Antivirus Programs
Constructing a Macro Virus to Upgrading Antivirus Programs

Wesam S. Bhaya; Alaa Abd Alhesain

Volume 29, Issue 5 , March 2011, Page 986-993

https://doi.org/10.30684/ etj.29.5.13

Abstract
  A virus is a self-replicating program that spreads by inserting copies of itself into other executable code or documents. a macro virus is a virus that is written in a macro language, ...  Read More ...
The Primary Decomposition of the Factor Group
The Primary Decomposition of the Factor Group

Manal Naji Al-Harere

Volume 29, Issue 5 , March 2011, Page 994-1001

https://doi.org/10.30684/ etj.29.5.14

Abstract
  The main purpose of this work is to find the primary decomposition of factor group K (The factor group of all z-valued class functions module the group of Z-valued generalized characters ...  Read More ...
Optimum Design of Composite Laminated Plate Using Genetic Algorithm and RSM
Optimum Design of Composite Laminated Plate Using Genetic Algorithm and RSM

Ammar Ali Hussein Al-filfily

Volume 29, Issue 5 , March 2011, Page 1002-1020

https://doi.org/10.30684/ etj.29.5.15

Abstract
  The paper is focused on the application of the response surface method (RSM) in structural optimization. Applications of the response surface method in the design of composite laminated ...  Read More ...
Solving Non Linear Function with Two Variables by Using Particle Swarm Optimization Algorithm
Solving Non Linear Function with Two Variables by Using Particle Swarm Optimization Algorithm

Ahmed Shawki Jaber

Volume 29, Issue 5 , March 2011, Page 1021-1031

https://doi.org/10.30684/ etj.29.5.16

Abstract
  The meaning of the Particle Swarm Optimization (PSO) refers to a relatively new family of algorithms that may be used to find optimal (or near optimal) solutions to numerical and qualitative ...  Read More ...