Volume 2, Issue 1 (2006) | Journal of Mathematics and Statistics

Adults' Demand for the Internet use in the USA: An Empirical Approach

Ismail H. Genc — 2006-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2006; doi:10.3844/jmssp.2006.328.333

Academic literature regarding the factors influencing Internet use is presented. Based on this literature, a theoretical model of the demand for the use of the Internet is developed. The estimation of...

Constrained Single Period Stochastic Uniform Inventory Model With Continuous Distributions of Demand and Varying Holding Cost

Hala A. Fergany — 2006-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2006; doi:10.3844/jmssp.2006.334.338

This paper derives the single period stochastic inventory model with continuous distributions of demand and the holding unit cost is a function of the purchased (ordered) quantity. The objective is to...

On Some Stability Results for Fixed Point Iteration Procedure

M. O. Olatinwo — 2006-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2006; doi:10.3844/jmssp.2006.339.342

In this study, we establish that both the Mann and Ishikawa iteration processes are T-stable for the mappings T satisfying a more general contractive definition than that of Osilike[1] . The results ...

Reduced Assumption in the Banach Contraction Principle

Sahar M. Ali — 2006-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2006; doi:10.3844/jmssp.2006.343.345

In this study we introduce a novel class of normed spaces called weakly Cauchy normed spaces not necessarily complete in general and proved the existence of a fixed point of contraction mappings in th...

The Solution of Heat Conduction Equation with Mixed Boundary Conditions

Naser Abdelrazaq — 2006-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2006; doi:10.3844/jmssp.2006.346.350

The study is devoted to determine a solution for a non-stationary heat equation in axial symmetric cylindrical coordinates under mixed discontinuous boundary of the first and second kind conditions, w...

A Discrete Optimization Description for the Solutions in the Matching Problem

Walied H. Sharif — 2006-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2006; doi:10.3844/jmssp.2006.351.353

This study was concerned with the characterization of solutions in the matching problem. The general mixed-integer programming problem is given together with the definition of the convex hull of the i...

A Comparative Study of RSA Based Digital Signature Algorithms

Ramzi A. Haraty — 2006-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2006; doi:10.3844/jmssp.2006.354.359

A digital signature is a mechanism designed to allow secure communication through an insecure medium and can be traced in many applications where privacy is required. A digital signature is an electro...

Some Stability Results on Krasnolslseskij and Ishikawa Fixed Point Iteration Procedures

M. O. Olatinwo — 2006-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2006; doi:10.3844/jmssp.2006.360.362

In this study, we establish some stability results for the Krasnoselskij and the Ishikawa iteration procedures. We employ the same method as in Berinde[1], but using a more general contractive definit...

Constrained Probabilistic Lost Sales Inventory System with Normal Distribution and Varying Order Cost

Hala — 2006-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2006; doi:10.3844/jmssp.2006.363.366

This study derives the probabilistic lost sales inventory system when the order cost is a function of the order quantity. Our objective is to minimize the expected annual total cost under a restrictio...

Research Note: Standard Scores Based on the Median and Inter-quartile Range

James Carifio — 2006-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2006; doi:10.3844/jmssp.2006.367.367

Recently when asked to help with statistical analyses of the Medicare Provider Analysis and Review (MEDPar) Data, I encountered a common statistical and analytical problem with this national database,...