Browsing University Publications by Subject "Engineering: Research & Technology"
Now showing items 21-40 of 48
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How Top-Size Affects The Resilient Modulus Of Roadway Base Materials
( Qatar University , 1995 , Article)The American Association of State Highway and Transportation Officials (AASHTO) uses resilient modulus values as the load-carrying capacity parameter for all pavement materials. However, the maximum sample diameter in ... -
Improved 3d-Fe Computational Method For Magnetostatic Field Problems Using Unconstrained Vector Potential
( 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 ... -
Liquid Density Of Pure And Multicomponent Fluids By Scaled-Variable-Reduced-Coordinate (Svrc) Method
( Qatar University , 1995 , Article)The Scaled-Variable-Rcduced-Coordinatc (SVRC) method with a proposed set of mixing rules are applied to calculate the liquid density of several system of liquid mixture and satisfactory results are obtained. The ability ... -
Measurement Of Thermal Conductivity Of Thermally Low-Conducting Materials
( Qatar University , 1995 , Article)The thermal conductivity of a building material is a necessary parameter in estimating the cooling load of a building. Cooling load estimates are quite important in selecting building materials especially in hot-climate ... -
A Model For A Narrow-Cut Fractionating Column
( Qatar University , 1997 , Article)A mathematical model was developed to simulate the operation of a narrow-cut fractionating column. The model can calculate boiling point and dew point on the feed plate, the number of liquid and vapour moles, the enthalpy ... -
Nonlinear Adaptive Control Of A Permanent Magnet Stepper Motor
( Qatar University , 1994 , Article)This paper considers adaptive position control of a permanent magnet (PM) stepper motor using exact linearization via static state-feedback. Physical outputs are chosen in such a way that the resulting closed-loop system ... -
Numerical Study Of Magneto-Fluid-Mechanics Forced Convection Pipe Flow
( Qatar University , 1994 , Article)The problem of fully developed, laminar, steady, forced convection heat transfer in an electrically conducting fluid flowing in an electrically insulated, horizontal, circular pipe (whose wall is subjected to a uniform ... -
On Improving Communication Software Development Process
( Qatar University , 1995 , Article)This paper aims to standardize the software development process by making use of the well-established hardware development process. The procedure can be applied to any engineering software development process, but we ... -
The Onset Of Resonance In Two-Immiscible Fluids Inside A Spinning And Coning Cylinder
( Qatar University , 1993 , Article)Resonance of the motion of two fluids inside a cylinder that spins about its axis and rotates (cones) about an axis that passes through its center of mass is known to occur for low-viscosity fluids (high Reynolds number ... -
Optical Matching For Microwave Active Devices
( Qatar University , 1997 , Article)This paper describes a microstrip optically controlled matching technique between microwave active devices with low impedance (less than 10 ohms) and a conventional 50 or 70 ohm communication system in the upper microwave ... -
Optimizing Use Of Marshall Asphalt Mix Design
( Qatar University , 1997 , Article)Rutting has been a problem in Qatar's highway pavements since it began designing asphalt mixtures with the Marshall Method in the early 1990's. This paper describes specifications and rules-of-thumb which have been ... -
Optimum Design Of Concrete Slab Forms
( Qatar University , 1996 , Article)This paper presents a design optimization method for concrete slab forms. This procedure was formulated to provide a safe slab form design with minimum cost. The proposed method considers in its design process the cost of ... -
Parallel Computing Applied To Compensate The Effect Of Amplifier Bandwidth In The Design Of Switched Capacitor Networks
( Qatar University , 1994 , Article)A method is described for the extraction of capacitor values for switched capacitor (SC) networks which compensate for the effect of finite amplifier bandwidth in the design of SC networks using optimization. The finite ... -
Properties Of The Omani Sarooj
( Qatar University , 1997 , Article)The fundamental properties of the Omani sarooj have been studied. Sarooj samples were collected from different sites to assess their pozzolanic activity. A laboratory testing program covering chemical and physical ... -
Qualitative Assessment Of Bottled Water In The Middle East
( Qatar University , 1996 , Article)Many brands of bottled water are being produced in the Middle East including the Gulf Cooperation Council (GCC) countries. Over fourteen brands of bottled water could be found in the market of Doha. Use of bottled water ... -
Recognition Of Cursive Texts Using Hamming Neural Nets
( Qatar University , 1994 , Article)Hamming Neural networks are employed for cursive text character separation and recognition. The digitized image of the scanned text is first enhanced by applying simple contrast stretching algorithm. Image registration is ... -
Selection Of Optimized Fuzzy Rules For Process Control Systems: Using Genetic Algorithms
( Qatar University , 1996 , Article)In this paper modeling, selection and optimization of fuzzy rules for multivariable feedback process control and decision making systems are developed and discussed. A general model for multivariable fuzzy rules is derived ... -
A Self-Organizing Multisensor Fusion Classification Algorithm
( Qatar University , 1996 , Article)A self-organizing multisensor fusion algorithm to classify the inputs (data or images) into classes (targets, backgrounds) is presented. The algorithm forms clusters and is trained without supervision. The clustering is ... -
Shear Behavior Of Reinforced High-Strength Concrete Beams Without Shear Reinforcement
( Qatar University , 1994 , Article)Eighteen rectangular singly reinforced high-strength concrete beams without web reinforcement were tested in combined shear and flexure. The main variables were the longitudinal steel reinforcement ratio and the shear-span ... -
Simplified Method For Plate Deflection Calculation
( Qatar University , 1997 , Article)This paper presents a simplified method for the calculation of thin-plate deflections. The method, which deals with uniformly loaded plates, uses the stiffness method to obtain plate deflection equations for specified ...
