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Now showing items 1-20 of 193
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Aerodynamic Effects of Blade Positive Sweep in Axial Flow Cascades
(CEST-2018, 2018-09-27)In this work, the effects of sweep applied to rotor of axial flow turbomachines were investigated by means of applying computational fluid dynamics (CFD) tools. Low-aspect-ratio rotors of positive sweep (PSW) have been ... -
Analysis of the Failure of Cylindrical Pressure Vessels
(CEST-2018, 2018-09-27)This study investigates the failure of cylindrical pressure vessels and examines their integrity in the presence of cracks using von-Mises (Distortion Energy) yielding criterion and fracture mechanics methodology. The ... -
Antenna Elevation Control using Multiple Switched Self-Tuning Controllers Design
(CEST-2018, 2018-09-27)Adaptive controllers have a lot of advantages over conventional ones, especially when the model of the plant to be controlled is unknown or changes with time. This paper proposes a control scheme for multiple adaptive ... -
Application of the TDS Technique in Gas Reservoirs
(2020-12-03)Tiab’s Direct Synthesis (TDS) is a direct technique to interpret transit well pressure tests. It is analysis of pressure and pressure derivative without type-curve matching. This method uses log-log Plot of the pressure ... -
Arabic Language Character Recognition using Walsh- Hadamard Transform (WHT) vs. Discrete Fourier Transform (DFT)
(Elmergib University, 2019-12)One of the common used methods for text recognition (especially with Arabic text), is the usage of character Databases for driving the training and validation (for all the different methods that are used for preprocessing, ... -
Bandwidth Optimization Through Hybrid Codecs G.711 and G.729 for VoIP Ethernet, FR and MP Networks
(CEST-2018, 2018-09-27)With the rapid growth in both internet and telecommunication technologies, VoIP has become more and more popular and expected to replace the traditional telephony services. The main issues in communication of real time ... -
Boilers Performance Evaluation of Zuara Desalination Plant
(CEST-2018, 2018-09-27)Water is the basis of daily life and industrial development for all communities. Water desalination plants emerged as one of the most important alternatives to overcome the shortage of water resources especially in desertified ... -
Building English Vocabulary Schema and Words Retention using Review Value Calculation for English as Secondary Language Students
(CEST-2018, 2018-09-27)Vocabularies, the core of any language, is probably the most challenging and time consuming part of learning a foreign language in a diverse and disperse community of learners. This study proposes an approach that can help ... -
Built to Code Building Envelop Versus Sustainability of High-Rise Building Performance
(CEST-2018, 2018-09-27)Global warming and climate change are major challenges facing the nation and the world. More than two thirds of the electric energy and one third of the total energy are used to heat, cool, and operate buildings, representing ... -
Capability of Designing a Novel Fluid Damper Using a McKibben Actuator
(CEST-2018, 2018-09-27)Flow fluid between moving parts is providing the damping force. Such characteristic can be utilized to build fluid dampers for a wide variety of vibration control systems. Most previous works have studied the application ... -
Capability of Modified SIFT to Match Stereo Imagery System
(CEST-2018, 2018-09-27)This paper presents an improved version of SIFT method for extracting invariant features from images that can be used to solve the correspondence problem between different views of an object or scene in an image. Scale ... -
Classifying Various Bacteria Genera by Transfer Learning Model
(2020-12-03)Bacteria Classification using computer-aided methods makes the identification and recognition processes more automatic and thus greatly reduces the time needed for classification. In this paper, we explored an approach to ... -
CO2 Corrosion Inhibitor Assessment Using Various Measurement Techniques in oilfield
(CEST-2018, 2018-09-27)Tests and evaluation studies were conducted to select the best performance and treating rich carbon dioxide fluid composition associated with crude oil are produced. The experiments include standard electrical resistance ... -
Color Image Encryption in the Spatial Domain Using 3-D Chaotic System
(CEST-2018, 2018-09-27)ABSTRACT Users of Internet daily send and receive many images through social media. These images are vulnerable to hack by attackers. Therefore, it is necessary to develop methods to protect these images against attackers. ... -
Combined Image Encryption and Steganography Algorithm in the Spatial Domain
(CEST-2018, 2018-09-27)In recent years, steganography has emerged as one of the main research areas in information security. Least significant bit (LSB) steganography is one of the fundamental and conventional spatial domain methods, which is ... -
Comparative Analysis of Electric Field and Potential Distributions over Porcelain and Glass Insulators Using Finite Element Method
(CEST-2018, 2018-09-27)This paper investigates the electrical performance of outdoor porcelain and glass insulators when subjected to an 11 kV AC voltage. The insulators are modeled in two dimensions, and the analysis of COMSOL software is used ... -
Comparative Study of the Electromagnetic Performance of Yokeless and Segmented Armature YASA Machine with Different Rotor Pole Combinations
(2020-12-03)In this paper, a conventional axial flux yokeless and segmented armature YASA machine is designed and then simulated. It has been proved that, this machine has a high torque density and has been utilized for wind generation ... -
A Comparison Between Elzaki and Aboodh Transforms to Solve Systems of Linear Volterra Integral Equations
(Elmergib University, 2019-12)In this paper , the Elzaki transform is compared with Aboodh transform to solve some systems of linear Volterra integral equations. -
Comparison of BER Performance of Cooperative Wireless Systems Based on D-OSTBC, D-EOSTBC and DF Relaying Protocol
(2020-12-03)The end-to-end bit error rate (BER) performance analysis of cooperative wireless communication networks based on distributed orthogonal space time block coding (D-OSTBC) (Alamouti) scheme, distributed extended orthogonal ... -
Comparison of BER Performance of SISO, MISO and MIMO Systems Based on OSTBC and EO-STBC Techniques
(2020-12-03)Comparison of bit error rate (BER) performance of single input single output (SISO), multiple input single output (MISO), and multiple input multiple output (MIMO) systems based on orthogonal space time block coding (OSTBC) ...