Browsing Engineering Journal of Qatar University - [From 1988 TO 2005] by Title
Now showing items 189-208 of 221
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Solar Water Pumping — An Analytical Overview
( Qatar University , 1988 , Article)Two basic thermodynamic conversion techniques of solar water pumping are recognized. In the first technique, a high internal energy fluid heated in a solar collector is used to power a conventional heat engine which drives ... -
Solidification Of Steel Billets In Continuous Casting
( Qatar University , 1991 , Article)For practical operation, it is necessary to know how the solidification of liquid steel progresses i.e. when and where a strand has completely solidified. Decisions on, the casting speed, the spray water flow rates and ... -
Solubility and Tie Line Data for The System Sea Water - Xylene - n - Butanol
( Qatar University , 1989 , Article)Ternary equilibrium data for the system Sea Water - Xylene-n-Butanol were determined at 23°C. The maximum solubility of n-Butanol in sea water was found to be 4.763% at room temperature. Xylene was found to be practically ... -
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 ... -
Spreadsheet Class Scheduling For The College Of Engineering, University Of Qatar
( Qatar University , 1998 , Article)The process of preparing class schedules is a lengthy and painstaking experience, especially when the requirements on the system approach saturation capacity. Instructors have to be assigned to places, with different ... -
A Spreadsheet Teaching Tool For Analysis Of Pipe Networks
( Qatar University , 1997 , Article)Spreadsheets are used widely in engineering to perform several analysis and design calculations. They are also very attractive as educational tools due to their flexibility and efficiency. This paper demonstrates the use ... -
Stability Analysis Of Digital Pd Control Applied To Flexible Systems
( 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 ... -
Stability Of Square Interval Matrices For Discrete Time Systems
( Qatar University , 2001 , Article)New sufficient conditions for the Schur stability of interval matrices are provided. Moreover, a time saving version of a necessary and sufficient condition for the Schur stability of a class of interval matrices is ... -
Structural Design Of Arch Profile And Depth — A Computer-Aided Study
( Qatar University , 1991 , Article)This paper presents a comparative study of some of the best known and widely used arch profiles, in an endeavour to investigating their structural performance and to determining optimum arch form and depth. Arch profiles ... -
Structure Mixture Response Of Buildings Due To Simulated Earthquake Loading
( Qatar University , 2002 , Article)This paper presents two case studies to evaluate the performance of the structure mixture theory in the earthquake response analysis of buildings. In the first case study, the actual earthquake responses of the two-story ... -
Study of A Time Dependent Double -Diffusive Salinity Problem
( Qatar University , 1989 , Article)The time-dependent, double diffusive stability problem for a horizontal layer of salty water bounded by two rigid isothermal surfaces is analyzed using a linear perturbation technique. Initially, the layer is subjected to ... -
Study of the influence of xylene-based chemical Additive on crude oil flow properties and Paraffin deposition inhibition
( Qatar University , 2005 , Article)Paraffin related problem appears through out the production process of nearly all kinds of crude oils all over the world. It also appears in the dewatering process and the long distance crude oil transportation. In Nigeria, ... -
Teaching Structural Steel Design Using Mathcad Program
( Qatar University , 2000 , Article)This paper demonstrates the integration of Mathcad programming in a steel design course at the University of Qatar. It discusses the advantages of Mathcad programming over other programming formats and provides guidelines ... -
Thermal and catalytic cracking of petroleum residue oil
( Qatar University , 2005 , Article)Thermal and catalytic cracking over synthesized nickel-molybdenum supported on aluminum borate (NiMo/AB) catalysts were studied. A series of aluminum borate supports with various aluminum borate (A/B) weight ratios were ... -
Three Dimensional Analysis Of Skeletal Structures Considering Cracking
( Qatar University , 1992 , Article)A three dimensional computer model has been developed to analyze space structures containing cracked members. A new stiffness matrix for cracked space members has been obtained. This model takes into consideration crack ... -
Three Dimensional Analysis Of Space Imageries
( Qatar University , 1994 , Article)Space imageries with their low costs and availability for every one, provide a good opportunity for topographic mapping of unmapped or poorly mapped areas around the world particularly in the developing countries. The ... -
Throughput-Delay Performance Analysis Of Ssma Packet Radio Network
( Qatar University , 2000 , Article)Multiple access communication accommodates a large population of relatively uncoordinated users of a common spectral allocation in the same and neighboring geographical areas with the number of simultaneous users proportional ... -
Time-Optimal Control Of High-Speed Flexible-Robot Arm Using PD Algorithms
( 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. ... -
Traffic Generation And Parking Demand Of The Qatar International Squash And Tennis Centre
( Qatar University , 1993 , Article)In early 1992 the Government of the State of Qatar decided to construct a new squash and tennis centre. Ministry of Municipal Affairs and Agriculture (MMAA) staff made an assessment of the centre's probable traffic generation ... -
Transmission Of Compressed Video Signals Through A Spread Spectrum Channel
( Qatar University , 2001 , Article)This research studies the feasibility of devising a compression scheme for video sequences that is robust to fading errors in a spread spectrum environment. Schemes like subband coding and pyramid coding are inherently ...
