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Now showing items 21-30 of 44
Repetitive Control Based Pwm Inverter Dead-Time Compensation For Ac Servo Drive
(
Qatar University
, 2002 , Article)
AC servomotor speed or current controller based on PI control and/or optimal control, can not eliminate the cyclical fluctuations of speed or current when subject to periodic disturbances. However, repetitive control ...
Computation Of Normal Depth In Open Channels
(
Qatar University
, 1998 , Article)
Fixed-point iteration is an efficient technique for manual and machine calculation of normal depth. The method is applied to the solution of Manning's equation for two basic uniform flow problems in trapezoidal and circular ...
Effect Of Drilling Fluids Contaminations On Saudi Reservoir Rock Wettability
(
Qatar University
, 1998 , Article)
Wettability is a key parameter that affects the petrophysical properties of reservoir rocks. Mud nitrate during drilling pay zone causes a significant change in rock wettability that will affect the oil production and ...
Use Of Cement By-Pass Dust In Soil Stabilization
(
Qatar University
, 2001 , Article)
Cement by-pass dust (CBPD) or cement kiln dust (CKD) is a by-product of the manufacture of Portland cement. It is generated during the calcining process in the kiln. Lime (CaO) constitutes more than 60% of CBPD composition. ...
Concrete Pavement Truck Equivalence Factors For Upgrades
(
Qatar University
, 1999 , Article)
Presented in this paper are the upgrade truck equivalence factors for
single unit trucks of type, 1.2 and 1.22 which are not covered by
AASHTO. The equivalency factors for front and rear axles of single
unit trucks were ...
Effect Of Series Resistance On Photovoltaic Properties Of In-Doped Cdte(P) Thin Film Homojunction Structure
(
Qatar University
, 2001 , Article)
The photovoltaic properties of In-doped CdTe(p) thin film homojunction structure have been investigated, specially the effect of the series resistance on the short-circuit current at low and high light intensities has been ...
Application Of Neural Generated Error Signal In Classification And Compression Of Ecg Beats
(
Qatar University
, 2002 , Article)
This paper presents a neural network architecture connected in cascade for ECG Holter system beat classification and compression. The system works in real time, on line, and is capable of recognizing and compressing up to ...
Gas Saturation Monitoring In Heterogeneous Reservoir Using Tdt Modeling Technique
(
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 ...
Some Misconceptions About Plastic Degradation
(
Qatar University
, 1999 , Article)
In consistence with the importance of implementing best utilization of human resources towards maintaining suitable healthy environment for our next generations, concepts and fundamentals upon which most researches on ...
Comparing The Elastic Constants Of Porous Titanium Compacts With Theoretically Predicted Values
(
Qatar University
, 1998 , Article)
Some elastic properties of green and sintered titanium compacts were experimentally measured. The results were compared with the theoretical predictions based on Mackenzie's and Walton's models. It was concluded that the ...