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Now showing items 21-30 of 221
Calculating the Velocity of Sound in Real Pure Component Gases and Mixtures of Real Gases
(
Qatar University
, 1989 , Article)
Performance Simulation Of Single-Evaporator Domestic Refrigerator Using Alternative Refrigerants
(
Qatar University
, 2003 , Article)
The search for well-functioning and energy-optimized refrigeration systems has made modeling and simulation of such systems an important tool for the industry in terms of product development. The present study explores how ...
Hydrate Technology For Transporting Natural Gas
(
Qatar University
, 2003 , Article)
Natural gas hydrate (NGH) is a viable alternative to LNG (Liquefied Natural Gas) or pipelines for the transportation of natural gas from source to demand. It involves three stages: production, transportation and re-gasification. ...
Differential Amplitude Phase Shift Keying (Dapsk): A New Modulation Method For A Turbo Code In Digital Radio Broadcasting
(
Qatar University
, 2003 , Article)
The multilevel modulation techniques of M–Differential Amplitude Phase Shift Keying (DAPSK) have been proposed in combination with Turbo code scheme for digital radio broadcasting bands below 30 MHz radio channel. Comparison ...
Non Uniform Differential Amplitude Phase–Shift–Key (Dapsk) Modulation For Multimedia Multicast Wireless Communications With Punctured Convolutional Coding
(
Qatar University
, 2003 , Article)
Simple closed–form expressions for the probability of error for nonuniform M–ary Differential Amplitude Phase–Shift–Key (DAPSK) signaling over an Additive White Gaussian Noise (AWGN) and Rayleigh fading channels are ...
Can Nmr Solve Conventional Logs Interpretation Problems In Low Resistivity Beds Evaluation
(
Qatar University
, 2003 , Article)
This paper presents some cases of low resistivity reservoirs and low contrast resistivity reservoirs where conventional logs fail to determine the petrophysical properties of formation. The problems of these reservoirs are ...
A Demodulation Technique For Power System Local Frequency And Voltage Measurements
(
Qatar University
, 2003 , Article)
The demodulation technique of two complex signals is used to estimate the power system local frequency and voltage phasor. The first complex signal is generated from the three-phase voltage waveform by using the ...
Predict The Properties Of Aqueous Mixed Electrolyte Solutions From Properties Of The Individual Electrolyte Solution
(
Qatar University
, 2003 , Article)
For calculating the thermodynamic properties of mixed electrolyte solutions, a thermodynamic framework is developed. The vapor pressure, density and osmotic coefficient of several mixed electrolyte solutions are predicted ...
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 ...
Accreditation of Engineering Programs In The USA
(
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 ...