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السجلات المعروضة 21 -- 30 من 54
A 6th-order local approximation by a cubic curve
(
Qatar University
, 1997 , Article)
We derive and present a MAPLE program for the construction of a parametric cubic polynomial curve which has sixth-order contract with a given smooth curve at a given point, thus providing a local sixth-order approximation ...
Diagonalizable Indefinite Integral Quadratic Forms
(
Qatar University
, 1991 , Article)
This paper deals with some special cases on Hasse's principle about the diagonalization of Z-lattices L of indefinite regular guadratic forms over Q. It is asserted that for some specific values of a certain set D of ...
صفات وكفايات معلم رياضيات المرحلة الابتدائية بدولة قطر
(
Qatar University
, 1993 , Article)
Stochastic Classes Of Life Distributions
(
Qatar University
, 1990 , Article)
The concept of stochastic ordering of random variables is used to characterize the behaviour of the life length variables. This leads to some new classes of ageing namely, the stochastic classes of life distributions. The ...
An Algorithm for the Consturction of Admissible Tests of the Weibull Distrbution
(
Qatar University
, 1999 , Article)
The method of H. Al-Rawwash and J. Marden [2] is used here for the construction of an admissible test which dominates a given inadmissible one for testing hyupothesis about the Weibull distribution. The algorithm and its ...
The Likelihood Function For A Progressive Disease Model With A Bivariate Survival Function
(
Qatar University
, 1995 , Article)
A model for the natural history of a progressive disease is developed. The model has three disease states and can be expressed as the joint distribution of two survival random variables. Covariate information is incorporated ...
Is the Michigan Test an adequate tool for placement at the University of Qatar
(
Qatar University
, 1994 , Article)
The English Department at Qatar University is one of the most popular departments in the university in which students like to enroll. To enable students to cope with the requirements of the department, and to be able to ...
A Note On Pre-J-Group Rings
(
Qatar University
, 1991 , Article)
Given an associative ring R satisfying a°'b = Ba" for any pair a and b of its elements, is being a positive integer, and a group G satisfying x""' = y"~1, we give a sufficient and necessary condition on the group ring GR ...
A rational logarithmic model for unconstrained non-linear optimization
(
Qatar University
, 1997 , Article)
A new non-quadratic model is proposed for solving unconstrained optimisation problems which modifies and develops the classical conjugate gradient methods. The technique has the same properties as the classical conjugate ...
On A Kp Class Of Partial Differential Equations Conservation Laws And Solitary Wave Solutions
(
Qatar University
, 1996 , Article)
It is shown that a KP class of partial differential equations possesses an infinite number of conservation laws. In addition, exact and explicit solitary wave solutions are constructed for the KP class of equations, which ...