Mahmoud Ali Ahmed

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The problem of the parameterization of data points in NURBS curve/surface has been considered by amount of researchers. In this study, a new parameterization method considered as hybrid parameterization method is proposed. Like universal method, this method uses the property of ¿at each span index, there is exactly one maximum value of the rational B-spline(More)
Accident forecasting is designed to help decision making and planning before loss occur; a new method of combination forecasting applied in traffic accident is showed in this paper. It is based on the rough sets theory, and the weighting coefficient of all the forecast models, so the result of forecasting will be more precise. Based on the mean relative(More)
It is extremely inevitable for classroom interaction to involve students to work in groups. The study aims at utilizing cooperative learning strategy to maximize classroom interaction in secondary school level at Damazeen city. The study follows the descriptive analytical method and uses a questionnaire as a tool for data collection. In practice two(More)
Laminar natural convection in differentially heated (β = 0°, where β is the inclination angle), inclined (β = 30° and 60°), and bottom-heated (β = 90°) square enclosures filled with a nanofluid is investigated, using a two-phase lattice Boltzmann simulation approach. The effects of the inclination angle on Nu number and convection heat transfer coefficient(More)
In this paper, the problem of reducing control points for surface reconstruction is addressed. A new parameterization method considered as hybrid method for NURBS surface is presented. This method allows multiple knots, and very close domain knots. The proposed method and another three conventional methods (uniform, cord length and centripetal) are applied(More)
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