Volume 4, Issue 2 (2008) | Journal of Mathematics and Statistics

Power Series Solution for a Two-step Reactive-diffusive Equation with Variable Pre-exponential Factor

E.A. Adebile — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.65.69

We discussed in this research a power series method for solution of a two-step reactive-diffusive equation with variable pre-exponential factor. A transformation was used to fit in the geometry of the...

Weyl's Type Theorems for Quasi-Class A Operators

M.H.M. Rashid — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.70.74

A variant of Weyl theorem for a class of quasi-class A acting on an infinite complex Hilbert space were discussed. If the adjoint of T is a quasi-class A operator, then the generalized a-Weyl holds f...

Effect of Multicollinearity on Power Rates of the Ordinary Least Squares Estimators

O.O. Alabi — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.75.80

Inferences on the parameter estimates of Ordinary Least Square (OLS) estimator in regression model when regressors exhibit multicollinearity is a problem in that large standard errors of the regressio...

A New Three-Term Preconditioned Gradient memory Algorithm for Nonlinear Optimization Problems

Abbas Y. AL-Bayati — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.81.87

In the present study, we proposed a three-term of preconditioned gradient memory algorithms to solve a nonlinear optimization problem. The new algorithm subsumes some other families of nonlinear preco...

A Boundedness Theorem for a Certain Third Order Nonlinear Differential Equation

A.T. Ademola — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.88.93

In this study, we establish conditions for ultimate boundedness of solutions for a certain third order nonlinear differential equation using a complete Yoshizawa function. The result includes and exte...

New Approach to Compute Integral Transforms

A. Adawi — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.94.97

Integral transforms find special applicability within scientific and mathematical disciplines. A powerful and efficient homotopy methodology in evaluating integrals arises in integral transforms was p...

A Simple Robust Control Chart Based on MAD

Moustafa Omar Ahmed Abu-Shawiesh — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.102.107

Control charts are one of the most powerful tools used to detect aberrant behavior in industrial processes. The Shewhart S-control chart is one of the most widely used statistical process control tech...

The Estimation of Logistic Probability Model of Binomial Data: Simulation Comparison

Zaki. J. Al- Sarraf — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.108.111

Properties of various types of estimators of the regression coefficients in linear logistic regression models were considered. The estimators include those based on maximum likelihood, minimum chi-squ...

Some Subordination Results Associated With Certain Subclass of Analytic Meromorphic Functions

F. Ghanim — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.112.116

For functions belonging to each of the subclasses S*w (β) and C*w (β) of normalized analytic functions in the open unit disk D, which are investigated in this paper when 0≤β

A Pseudo Spline Methods for Solving an Initial Value Problem of Ordinary Differential Equation

B.S. Ogundare — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.117.121

New scheme for solving initial value problem of ordinary differential equation was derived. Starting from the general method of deriving the spline function, the scheme was developed based on interpol...

RETRACTED: On the New Branch of Mathematical Science

M. Sivasubramanian — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.122.123

The origin of geometry dates back 30000(Thirty thousand years) B.C[3]. Euclid of Alexandria (2300 B.C.) complied the Elements which is the first scientific text book. Euclid assumed five postulates. T...

A New Partially Blind Signature Based on Factoring and Discrete Logarithms

N.M.F. Tahat — 2008-06-30

Journal of Mathematics and Statistics, Published online: 30 June 2008; doi:10.3844/jmssp.2008.124.129

Partially blind signatures played an important role in many electronic commerce applications. Many existing partially blind signature scheme based on a single hard problem but not secure. In this stud...