Research Paper
A Dynamic Optimal Power Flow of a Power System Based on Genetic Algorithm
A Dynamic Optimal Power Flow of a Power System Based on Genetic Algorithm

Afaneen Anwer; Ali H. Almosawi

Volume 40, Issue 2 , February 2022, Page 290-300

https://doi.org/10.30684/etj.v40i2.1747

Abstract
  The traditional concepts and practices of power systems are superimposed by economic market management. So OPF has become complex, and classical optimization methods were used to solve ...  Read More ...
Research Paper
Experimental Study of F2833x/Texas Ins. for Constructing Speed Controller on a Synchronous Motor Based on SVPWM Method
Experimental Study of F2833x/Texas Ins. for Constructing Speed Controller on a Synchronous Motor Based on SVPWM Method

Enas D. Hassan; Inaam I. Ali; Khalid G. Mohammed

Volume 40, Issue 2 , February 2022, Page 301-310

https://doi.org/10.30684/etj.v40i2.2171

Abstract
  Microprocessor programming algorithms in electrical inverter drive systems are essential in developing and formulating modern methods in closed control circuits. The microprocessor ...  Read More ...
The Proposition of Three Approaching Ways to Implement Tan-sigmoid Activation Function in FPGA
The Proposition of Three Approaching Ways to Implement Tan-sigmoid Activation Function in FPGA

Manal Talib Ali; Bassam H. Abed

Volume 40, Issue 2 , February 2022, Page 311-321

https://doi.org/10.30684/etj.v40i2.2160

Abstract
  Hyperbolic tangents and Sigmoid are commonly used for Artificial Neural Networks as activation functions. The complex equation of the activation function is one of the most difficult ...  Read More ...
Research Paper
A combining two ksvm classifiers based on True pixel values and Discrete wavelet transform for mri-based brain tumor detection and Classification
A combining two ksvm classifiers based on True pixel values and Discrete wavelet transform for mri-based brain tumor detection and Classification

Ali A. Mohammed; Mohammed A. Noaman; Hassan M. Azzawi

Volume 40, Issue 2 , February 2022, Page 322-333

https://doi.org/10.30684/etj.v40i2.2180

Abstract
  The studies on brain tumor detection and classification are continuing to improvethe specialists’ ability in diagnosis. Magnetic Resonance Imaging (MRI) is one ofthe most common ...  Read More ...
Research Paper
The Structural and Optical Properties of Nanocrystalline Fe3O4 Thin Films Prepared by PLD
The Structural and Optical Properties of Nanocrystalline Fe3O4 Thin Films Prepared by PLD

Khalid A. Abdulkareem; Suad Kadhim; Shams B. Ali

Volume 40, Issue 2 , February 2022, Page 334-342

https://doi.org/10.30684/etj.v40i2.2235

Abstract
  In this study, thin films of pure iron oxide (Fe3O4) were prepared using pulsedlaser deposition technique under vacuum (2×10-3 mbar) using Nd: YAG laser atdifferent laser energies ...  Read More ...
Research Paper
Effects of pumping profiles on the temperature distributions in doubleend pumped solid-state lasers: A comparison study
Effects of pumping profiles on the temperature distributions in doubleend pumped solid-state lasers: A comparison study

Hind A. Jawad; Mohammed J. AbdulRazzaq; Khalid S. Shibib

Volume 40, Issue 2 , February 2022, Page 343-349

https://doi.org/10.30684/etj.v40i2.2278

Abstract
  In this work, the effects of pumping profiles on the temperature distributions in solid-state lasers pumped by laser diode from two different end faces were studied. With different ...  Read More ...
Research Paper
Effect of Fiber-Telescope Coupling Losses on Wideband Wavelength Division Multiplexing in Free Space Optical Communications
Effect of Fiber-Telescope Coupling Losses on Wideband Wavelength Division Multiplexing in Free Space Optical Communications

Abdulrahman. A. Almukhtar; Abdulla K. Abass; Mudhafer. H. Ali

Volume 40, Issue 2 , February 2022, Page 350-357

https://doi.org/10.30684/etj.v40i2.2194

Abstract
  The effect of telescope losses (TL) on wideband wavelength division multiplexing (Wideband-WDM) based on free-space optical communication (FSOC) is investigated via OptiSystem software. ...  Read More ...
Research Paper
Eccentricity Effect on Radial Forces of Bearingless BLDC Motor: Study and Analysis
Eccentricity Effect on Radial Forces of Bearingless BLDC Motor: Study and Analysis

Ali A. Yousif; Ahmed M. Mohammed; Mohammed Moanes E. Ali

Volume 40, Issue 2 , February 2022, Page 358-368

https://doi.org/10.30684/etj.v40i2.2218

Abstract
  The bearingless BLDC motor gathers all advantages of the BLDC motor and bearingless machine, and this motor is extensively used in blood and artificial heart pumps. In a bearingless ...  Read More ...
Research Paper
Optimizing the Performance of Wireless Sensor Network Based on Software Defined Network and Gaussian Filter
Optimizing the Performance of Wireless Sensor Network Based on Software Defined Network and Gaussian Filter

Jumana S. Khearallah; Khalida Sh. Rijab

Volume 40, Issue 2 , February 2022, Page 379-385

https://doi.org/10.30684/etj.v40i2.2221

Abstract
  This paper presents software defining network SDN control in wireless sensor networks (WSN) to estimate packet flow, which relies on a Gaussian filter to filter the transmitted signal. ...  Read More ...
Research Paper
A Comparative Study of Perturb and Observe (P&O) and Incremental Conductance (INC) PV MPPT Techniques at Different Radiation and Temperature Conditions
A Comparative Study of Perturb and Observe (P&O) and Incremental Conductance (INC) PV MPPT Techniques at Different Radiation and Temperature Conditions

Marwan E. Ahmad; Ali H. Numan; Dhari Y. Mahmood

Volume 40, Issue 2 , February 2022, Page 376-385

https://doi.org/10.30684/etj.v40i2.2189

Abstract
  The biggest challenge in the solar system is to extract the maximum output powerfrom photovoltaic (PV) panels under different solar radiation and temperatureconditions. This paper presents ...  Read More ...
Research Paper
FPGA-Based Single-Phase PV Inverter Using Unipolar and Bipolar SPWM Control Techniques
FPGA-Based Single-Phase PV Inverter Using Unipolar and Bipolar SPWM Control Techniques

Murtadha R. Sadeq; Hanan A. R. Akkar

Volume 40, Issue 2 , February 2022, Page 386-395

https://doi.org/10.30684/etj.v40i2.2239

Abstract
  The study presents circuitry modeling and methodology to integrate solar photovoltaic (PV) energy with grid (AC) sources to supplement household appliances during a power cut-off or ...  Read More ...
Research Paper
A Comprehensive Comparison for Different Hybrid Based Localization Algorithms for Indoor Communications
A Comprehensive Comparison for Different Hybrid Based Localization Algorithms for Indoor Communications

Riam M. Zaal; Eyad I. Abbas; Mahmood F. Mosleh

Volume 40, Issue 2 , February 2022, Page 396-403

https://doi.org/10.30684/etj.v40i2.1899

Abstract
  The era of the wireless communication-based indoor environment has resulted in several challenges represented by signal reflection, diffraction, and attenuation. Thereby, it affects ...  Read More ...
Research Paper
Synthesized of GaN Nanostructure Using 1064 nm Laser Wavelength by Pulsed Laser Ablation in Liquid
Synthesized of GaN Nanostructure Using 1064 nm Laser Wavelength by Pulsed Laser Ablation in Liquid

Husam Aldin A. Abdul Amir; Makram A Fakhri; Ali. A. Alwahib

Volume 40, Issue 2 , February 2022, Page 404-411

https://doi.org/10.30684/etj.v40i2.2271

Abstract
  GaN nanostructure was Synthesized using Pulsed laser ablation in liquid ethanol with Nd:YAG laser at pulsed laser ablation energy of 1600 mj and laser wavelength of 1064 nm. The nanoparticle ...  Read More ...
Numerical Simulation of the Self-Imaging at Different Cascaded Optical Fiber Specifications
Numerical Simulation of the Self-Imaging at Different Cascaded Optical Fiber Specifications

Shahad I. Younus; Anwaar A Al-Dergazly; Abdulla K. Abass

Volume 40, Issue 2 , February 2022, Page 412-421

https://doi.org/10.30684/etj.v40i2.2236

Abstract
  Cascaded optical fiber single mode-no core-single mode fiber (SNS) attracted attention for being the base of various photonic devices. These devices are used in optical communication, ...  Read More ...
Physical Properties of Pure Gold Nanoparticles and Gold Doped ZnO Nanoparticles Using Laser Ablation in Liquid For Sensor Applications
Physical Properties of Pure Gold Nanoparticles and Gold Doped ZnO Nanoparticles Using Laser Ablation in Liquid For Sensor Applications

Nabaa K. Hassan; Makram A Fakhri; Evan T. Salim

Volume 40, Issue 2 , February 2022, Page 422-427

https://doi.org/10.30684/etj.v40i2.2242

Abstract
  In this paper, the effect of using laser ablation of pure gold targets to obtain gold Nano rods and for pure zinc targets to obtain zinc oxide nanoparticles was studied separately in ...  Read More ...
Performance Comparison of Serial and Parallel Hybrid Fiber Amplifier under Optimum Pump Conditions
Performance Comparison of Serial and Parallel Hybrid Fiber Amplifier under Optimum Pump Conditions

Aseel A. Khudhaier; Abdulla K. Abass; Mudhafer H. Ali

Volume 40, Issue 2 , February 2022, Page 428-432

https://doi.org/10.30684/etj.v40i2.2183

Abstract
  In this work, two different configurations of hybrid fiber optic amplifiers are investigated and simulated via OptiSystem 7.0 software, namely, serial and parallel hybrid fiber optical ...  Read More ...