Browsing by Subject "Engineering: Research Papers"
Now showing items 1-20 of 44
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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 ... -
The Behavior Of Molasses As A Microbial Nutrient In The Absence Of Microbes
( Qatar University , 2000 , Article)In this work the effect of molasses, as a bacterial nutrient, on the pH and surface tension of the aqueous phase, IFT, and phase behavior after one week contact time was studied at 60°C. The results have shown that the pH ... -
Calcium Nitrite Effect On Setting Of Cement At Various Temperatures
( Qatar University , 2000 , Article)Calcium Nitrite, which is used as corrosion inhibitor, accelerates stiffening rates of cement. This paper deals with the effect of calcium nitrate on setting times of cement pastes at various curing temperatures. Four ... -
Causes For Delays In Construction Projects In Kuwait
( Qatar University , 2002 , Article)The paper presents a study based on a research that analyzes and ranks the causes of delays in building and housing type projects undertaken by governmental agencies in Kuwait. The study was based on a survey with the ... -
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 ... -
A Comparison Between Artificial Neural Network And A Geostatistical Technique In The Estimation Of Regionalized Variables
( Qatar University , 1999 , Article)In all mining estimation techniques data play a very important role. Insufficient data would mean the quality of the estimate is unreliable. Due to the importance attached to a good and representative data set, the application ... -
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 ... -
Computer Aided Design Of Microstrip Taper Lines
( Qatar University , 1999 , Article)This work presents an accurate computer aided design (CAD) for niicrostrip taper lines in the microwave range of frequency. This CAD considers all design parameters affecting the characteristics of the line for different ... -
Computer Simulation Of Gas Treating Unit And Comparison With Plant Data
( Qatar University , 1998 , Article)Predicting the performance of an industrial plant using computer simulation is becoming a common practice. Confirming the effectiveness of computer packages is not so common. The Shahid Hasheminejad Gas Treating Unit (GTU) ... -
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 ... -
Contribution Of Horizontal Drilling Technology In The Development Programs Of Saudi Oil Fields
( Qatar University , 2001 , Article)The technology of drilling and production of horizontal wells is probably one of the most significant breakthrough in the oil and gas industry of the eighties. The continuous improvement of hardware equipment made horizontal ... -
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 ... -
The Effect Of Initial Temperature On Burning Velocity Of Methane, Propane, Lpg And Iso Butane - Air Mixtures
( Qatar University , 2001 , Article)In present work, the burning velocity of a fuel - air mixtures varies with equivalence ratio, temperature and number of carbon atoms. Laminar flame speed have been measured experimentally inside a tube using the optical ... -
Effect Of Production Induced Stresses On Reservoir Productivity
( Qatar University , 2001 , Article)The importance of permeability sensitivity to the changes in pore pressure drop or effective overburden stress increase has been examined at laboratory using two types of rocks, sandstone and limestone. Whereas the ... -
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 ... -
An Evaluation Of The Explicit Fuzzy Method Using Parametric And Non-Parametric Approaches For Supervised Classification Of Multispectral Remote Sensing Data
( Qatar University , 2001 , Article)Fuzzy Classification is of great interest because of its capacity to provide more useful information for Geographic Information Systems. This paper describes an Explicit Fuzzy Supervised Classification method, which consists ... -
Experimental And Modeling Of Friables And Stone Oil Reservoirs Consolidation Using Steel Making Slag
( Qatar University , 2001 , Article)A mathematical model was developed simulating the process of sand production in under downhole stress state. The model was derived based on Mohr-Colomb failure criterion, Darcy equation for radial flow and reservoir stress ... -
Finite Element Analysis Of Tubular Induction Accelerators
( 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 ... -
Flow Routing Calculations For Water Resources Management Using Spreadsheets
( Qatar University , 1999 , Article)Flow routing calculations are very important for water resources engineers for analyzing and designing water engineering systems such as reservoirs, stocmwater conduits and detention ponds, spillways, pumping stations, ... -
Frame Synchronization In Ofdm Systems Using Neural Networks, With Dsp Implementation
( Qatar University , 2002 , Article)This paper presents a method for estimation of the timing offset in OFDM (Orthogonal Frequency Division Multiplexing) systems. The author showed that it is possible to detect the start of the OFDM blocks without the use ...