Volume 20 Issue 1
Published: 2025-06-25
Contents
Article
Experimental Study for Improving the performance of Stepped Spillway using an Obstructions
Elham Majeed Kurukji
AbstractIn this paper the energy dissipation was studied using stepped spillway, in addition to that the elimination of air pockets which take place at steps was also studied by using obstructions...
DOI: 10.33899/rengj.2012.47255
Experimental Study of Lift/Drag Ratio Enhancement Using Continuous Normal Suction
Taha A. Abdullah, Dr. Laith M. Jasim, Dr. Amir S. Dawood
AbstractAn experimental work of continuous normal suction from the wing upper surface effects on the aerodynamic forces is carried out, as well as, the effect of normal suction slot channels...
DOI: 10.33899/rengj.2012.47159
Comparison of Four Neural Network Learning Methods Based on Genetic Algorithm for Non-linear Dynamic Systems Identification
Dr. Rafid Ahmed Khalil
AbstractNon-linear dynamical systems are difficult to control due to the model uncertainties and external disturbances that may occur in these systems. This paper addresses the problem of...
DOI: 10.33899/rengj.2012.47165
Capacity Enhancement InWCDMA Cellular Network
Dr.S.Abdul MawjoudA, T. Hussien
AbstractThe third generation (3G) cellular system offers high data rate services compared with 1G and 2G systems, for good services and increased number of users,therefore for an operator,it is...
DOI: 10.33899/rengj.2012.47164
Effect of Partial Heating on Natural Convective Heat Transfer in an Inclined Porous Cavity
Muyassar E. Ismaeel, Dr. Amir S. Dawood
AbstractThis paper reports a numerical study of natural convection heat transfer in an inclined square porous enclosure partially heated from bottom. The finite difference technique with Gauss...
DOI: 10.33899/rengj.2012.47156
Design and Realization of Bireciprocal Lattice Wave Discrete Wavelet Filter Banks
Jassim M. Abdul-Jabbar, Sama N. M. Al-Faydi
AbstractIn this paper,designs and efficient realizations of special types of IIR wavelet filter banks are introduced. These special typesare the bireciprocal lattice wave discrete wavelet filter...
DOI: 10.33899/rengj.2012.47144
Numerical Study of Heat Transfer by Natural Convection of Porous Layer Using Non-Equilibrium Model
Mohanad K. Radhi, Amir S. Dawood
AbstractThis numerical study documents the phenomena of heat transfer by natural convection in thermally non-equilibrium porous cavity for Darcy flow model. The cavity is heated from below at...
DOI: 10.33899/rengj.2012.47157
Effect of size, shape and distribution of surface defects on the forming of aluminum sheet
Ahmed Nafie Rashid
The research was conducted on samples of aluminum sheet with 1 mm thickness, annealed at (275 C). To examine the effect of the size of surface defects on the stretch forming by introducing defects...
DOI: 10.33899/rengj.2012.47229
Implementation of Encoding Circuit for Inverse Differential Manchester Code (IDMC) And Clock Recovery Circuit
Warqaa Youns Ibraheem
AbstractIn this research an inverse differential Manchester code (IDMC) circuit is implemented to encode random data using logical circuits, and clock recovery circuit is implemented too. A design...
DOI: 10.33899/rengj.2012.47151
Voltage and Frequency Regulation of a Three Phase Induction Generator Using Voltage Source Inverter
Prof. Basil M. Saied, Mr. Hasan A.Mohammed
ABSTARCTIn this paper the study of a three phase SEIG system under steady state condition is presented. In order to obtain self excitation, a voltage source inverter (VSI) supported by a battery...
DOI: 10.33899/rengj.2012.47240
Aerobic Composting of Municipal Solid waste in Mosul City
Soad A. Abawi, Nadia A. Yakoob, Hamid A. Hamid
AbstractAn aerobic digestion for solid waste samples which had been mixed randomly to represent the normal (real) case, and for samples prepared to have Carbon to Nitrogen C:N equal (1-30) as an...
DOI: 10.33899/rengj.2012.47250
Thinking performance comparison of the designer in architectural education between the use of digital and traditional method
Dr. N.T. Alkymakchy
It is obvious to argue that the current era is a computer age which dominate scientific and academic fields, and thus have formed a new language used in most of life disciplines. Since the...
DOI: 10.33899/rengj.2012.47233
Metaphoric Image in Contemporary Iraqi Architecture
Dr. Ali haider Saad Al-Jameel, Mazin Jaber omar Al-Nima
AbstractMetaphor is considered as one of the concepts that were adopted by Post_Modern Architecture in the context of the suggestions for solving the problems of Modern Architecture concerning...
DOI: 10.33899/rengj.2012.47237
Matlab SimulationDesign and performance Comparison of OFDM &FH-OFDM Systems
Ammar Abdul-HamedKhader
AbstractSingle-carrier techniques are vulnerable for fading and multipath propagation. Recently, multicarrier modulation (MCM) or OFDM have received considerable attentions andhave made a great...
DOI: 10.33899/rengj.2012.47154
Numerical Modeling of Pore Water Pressure Development within a Thin Clay Core in an Earth Dam
Amina. A. Khalil
AbstractThis work aims at studying the pore water pressure development within a thin clay core in an earth dam. The study consists of two parts; a parametric study for general thin clay core (with...
DOI: 10.33899/rengj.2012.47163
Evaluating and Comparing of a Diesel Engine Performance and Its Pollutants Operating on Blends of Sunflower and Soybean Biodiesel Fuel
Arkan M. A. Sedeeq, Adil Abdulah, Firas S. Al-khayatt
AbstractThis study eventuated in two stages, the first is to extract biodiesel fuel from crude vegetable oil of sunflower and soybean oils, and the second stage is to use these extracted fuels to...
DOI: 10.33899/rengj.2012.47210
FPGA Implementations of Single-Multiplier Digital Sine-Cosine Wave Generators
Jassim M. Abdul-Jabbar, Noor N. Qaqos
AbstractThis paper presents four different realizations of single-multiplier sine-cosine generators based on second-order digital filter structure. FPGA implementations of these four realizations...
DOI: 10.33899/rengj.2012.47147
On The Durability of fine Grained Soils Stabilized With Lime
Dr. Suhail Adrees A. Khattab, Yousif Abduallah Hussein
AbstractMeasuring the durability of lime stabilized soils is one of the main concerns in soil stabilization, since there is no standard procedure for this case. This research studies the durability...
DOI: 10.33899/rengj.2012.47161
