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Non Uniform Differential Amplitude Phase–Shift–Key (Dapsk) Modulation For Multimedia Multicast Wireless Communications With Punctured Convolutional Coding
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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 ...
Preliminary Design Of Reinforced Concrete Beams Using Neural Networks
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Qatar University
, 2000 , Article)
This paper presents a backpropagation neural network model for the preliminary design of rectangular concrete beams. The model, which is developed based on the strength design procedure of the American Concrete Institute ...
The Behavior Of Molasses As A Microbial Nutrient In The Absence Of Microbes
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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 ...
On The Solution Of The Job-Shop Scheduling Problem Under Fuzzy Environment
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Qatar University
, 2002 , Article)
This paper presents a solution algorithm for solving the job-shop scheduling problem involving fuzzy parameters in the constraints. It is considered that the processing times are those fuzzy parameters and the maximum ...
Hydrate Technology For Transporting Natural Gas
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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. ...
Time-Optimal Control Of High-Speed Flexible-Robot Arm Using PD Algorithms
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Qatar University
, 2000 , Article)
This paper addresses utilization of proportional-plus derivative (PD) control algorithms for time-optimal control of flexible-robots. Flexibility is modeled using one mode of vibration with negligible structural damping. ...
A New Three Nodes Shell Element With Transverse Shear
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Qatar University
, 2000 , Article)
This paper proposes a new three node curved shell element. The approach used in the development of the new element is based on the Marguerre shallow shell theory which incorporates the effects of initial curvature (out-of ...
LQRr Real-Time Control For Plants With Variable Parameters
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Qatar University
, 2002 , Article)
This paper deals with real-time optimal LQR control of plants that experience sudden changes in their parameters and states. The technique is based on real-time LQR control problem. Riccati equation is solved recursively ...
Stability Analysis Of Digital Pd Control Applied To Flexible Systems
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Qatar University
, 2002 , Article)
The work shows that the sampling in a digital PD controller of a flexible system may cause instability, while the continuous PD control system is stable. A procedure is introduced to define the stability regions analytically ...
Genetic Algorithm Optimal Model For Slab Formwork Cost And Design
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Qatar University
, 2000 , Article)
This paper introduces Genetic Algorithms technique to find an optimum formwork design, using optimum section of joists, stringers and shores along with their spacing, and satisfying minimum cost. Genetic Algorithms technique ...