Engineering Journal of Qatar University - [From 1988 TO 2005]: Recent submissions

Now showing items 121-140 of 221

    • A Hadamard Transform Fuzzy Segmentation And Classification Technique For Image Compression 

      Katebi, S. D. ( Qatar University , 1996 , Article)
      A new technique for image data compression based on fuzzy segmentation, classification and properties of sequency ordered Hadamard Transform (HT) is presented. Using a pyramidal data structure, an image is segmented into ...

    • Heighting Accuracy Of Spot Imagery 

      Diefallah, M. A. M. ( Qatar University , 1991 , Article)
      The SPOT imaging system is the first sensor with stereoscopic capability and global continuous coverage. Stereopairs with overlap and base to height ratio suitable for the extraction of height information with reasonable ...

    • Finite Element Analysis Of Tubular Induction Accelerators 

      Alwash, J. H. H.; Al-Maayouf, M. A.; Qasir, L. J. ( Qatar University , 2001 , Article)
      The paper develops a method of analyzing tubular induction accelerators based on the finite element technique. The method takes end effects (due to current discontinuities at the rotor edges) into consideration. The ...

    • A Case Study Of Traffic Characteristics And Proposed Improvement Schemes For An Arterial Road 

      Noureldin, Magdy S. ( Qatar University , 1993 , Article)
      This case study represents a typical example of surveying and assessing traffic characteristics along a local ring road in Doha City. Expected impacts of possible short-term (5-year) traffic management schemes for two main ...

    • Gas Saturation Monitoring In Heterogeneous Reservoir Using Tdt Modeling Technique 

      Hamada, G. M; Dahab, A.A.; Abdel Dayem, M. M.; Heikel, S. ( Qatar University , 1999 , Article)
      The Zeit Bay field reservoir units consist of sandstone and carbonates, partially overlaying a tilted block of fractured basement reservoir with a complex drive mechanism. A secondary recovery scheme of gas re-injection ...

    • Educational Performance of Students In A New College Of Engineering: A Computer-Aided Study 

      Sheirah, M. A.; Shawki, G.S.A. ( Qatar University , 1989 , Article)
      A data-base computer package is herein developed to provide an effective tool lor llie studv. evaluation and rectification of tile academic performance of university students. As a test case, the newly established Faculty ...

    • Performance Evaluation Of Biped Robot Optimal Gait Based On Genetic Algorithm 

      Capi, G.; Nasu, Y.; Barolli, L.; Mitobe, K.; Yamano, M.; ... more authors ( Qatar University , 2001 , Article)
      A Genetic Algorithm (GA) gait synthesis method for walking biped robots is considered in this paper. The walking occupy most of the time during the task performance, therefore its gait is analyzed based on the minimum ...

    • New Algorithms For Digital Analysis Of Power Intensity Of Non Stationary Signals 

      Al Faouri, M. F.; Al Zoubi, A. Y. ( Qatar University , 1998 , Article)
      Discrete and continues time-frequency algorithms of the power intensity of non-stationary signals are proposed. Results show that the power intensity waveform analysis performed well in both discrete and continuous ...

    • Unsteady-State Interphase Diffusion 

      Chebbi, R. ( Qatar University , 1993 , Article)
      This study is concerned with the problem of unsteady interphase diffusion for multicomponent dilute solutions. An integral technique, based on an approximate boundary-layer approach is used. Results are in good agreement ...

    • Comparison of Recursive Parameter Identification Techniques for Computer Control of Power Systems 

      Sheirah, M. A.; El-Sayed, M. A. H. ( Qatar University , 1988 , Article)
      This paper outlines the main features of parameter identification in electric power systems. A series of recursive parameter identification techniques is presented, this containing the generalized — and extended least ...

    • A Compressive Strength Criterion for Anisotropic Rock Materials 

      Ashour, H. A. ( Qatar University , 1988 , Article)
      This paper puts forward a general compressive strength criterion for anisotropic rock materials under multiaxial state of stress. The proposed criterion, is a generalization of the Von Mises yield criterion for ductile ...

    • Compressive And Tensile Strength Of Concrete Loaded And Soaked In Crude Oil 

      Abdul Ahad, Ramzi B.; Mohammed, Azad A. ( Qatar University , 2000 , Article)
      Effect of crude oil on compressive, splitting-tensile, and flexural-tensile strength of concrete under short-term and Lr.^-term loading, were investigated. Results show that the rate of crude oil absorption is high at early ...

    • Improved 3d-Fe Computational Method For Magnetostatic Field Problems Using Unconstrained Vector Potential 

      Alhamadi, Mohamed A. ( Qatar University , 1996 , Article)
      This paper introduces an improved three dimensional finite-element (3D-FE) computational approach for magnetostatic field problems using unconstrained magnetic vector potential (MVP) formulation in conjunction with hexahedral ...

    • The Significance Of Permeability And Wettability Contrasts On Near Wellbore Flow Patterns Creating Formation Damage Effects 

      Al Marhoon, Nadhal 0.; Grattoni, Carlos A.; Dawe, Richard A. ( Qatar University , 1999 , Article)
      The majority of hydrocarbon reservoirs are heterogeneous and any geological model that is unable to represent these heterogeneities will not capture the correct displacement physics. In particular, difficulties are encountered ...

    • Accreditation of Engineering Programs In The USA 

      Jones, E. C.; Reyes-Guerra, David R. ( Qatar University , 1989 , Article)
      Accreditation is a way of assessing the quality of education. In the United States accreditation of engineering programs is carried out by volunteers, engineering educators and practitioners who evaluate programs against ...

    • Catalytic Oxidation Of Petroleum Waxy Distillates 

      Farag, Hassan A.; Ghanem, Nadia Ali; El-Kayar, Aida Mohamed ( Qatar University , 1994 , Article)
      The catalytic oxidation of petroleum waxy distillate (boiling range 400 - 440°C at 760 nun Hg) using KMn04 catalyst and air was studied in a batch reactor. The effect of reaction temperature (100-160°C), air flow rate ...

    • Prediction Of Reinforced Concrete Beam Depth Using Neural Networks 

      Senouci, Ahmed B.; Abdul-Salam, M. Ayman ( Qatar University , 1998 , Article)
      This paper discusses the development and the implementation of a neural network for the depth prediction of singly-reinforced rectangular concrete beams. The procedure of the American Concrete Institute (ACI-318 1995) ...

    • Spreadsheet Class Scheduling For The College Of Engineering, University Of Qatar 

      El Bahrawy, Aly N. ( Qatar University , 1998 , Article)
      The process of preparing class schedules is a lengthy and painstaking experience, especially when the requirements on the system approach saturation capacity. Instructors have to be assigned to places, with different ...

    • Construction Simulation Using Virtual Reality 

      Naji, Khalid K.; Najafi, Fazil ( Qatar University , 1996 , Article)
      Two main simulation methodologies namely, the network-based simulation and the graphical simulation technique are being used in the construction industry. While the network-based simulation technique, which was originally ...

    • Unsteady State Process Computations On Spreadsheets 

      Javed, K. H.; Ahmad, Shamim ( Qatar University , 1993 , Article)
      Spreadsheets are becoming increasingly popular, as a useful tool, for making process engineering calculations. This paper shows the use of spreadsheets for computations of an unsteady state process described by ordinary ...