Volume 5, Issue 3 (2009) | Journal of Mathematics and Statistics

Sufficient Conditions for Subordination of Meromorphic Functions

Rabha W. Ibrahim — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.141.145

Problem statement: The problem of giving sufficient condition for certain class of meromorphic functions defined as differential operator was studied. Approach: The differential operator of meromorphi...

Statistical Analysis of the Risk Factors of the Major Epidemic Disease Among Residents of Sekondi-Takoradi Metropolis (STMA)

A. J. Turkson — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.146.151

Problem statement: This study focused on statistical analysis of risk factors of the major disease among residents of STMA. The objectives of the study were to find the predominant diseases affecting ...

Residues of Complex Functions with Definite and Infinite Poles on X-axis

Abbas Y. AL-Bayati — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.152.158

Problem statement: One of the most popular areas in the mathematics is the computational complex analysis. In this study several computational complex techniques were investigated and implemented nume...

Exact Solutions of Mass Transfer over a Stretching Surface with Chemical Reaction and Suction/Injection

Hassan A.M. El-Arabawy — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.159.166

Problem statement: In this research the researchers studied and made an analysis to the effects of suction/injection and chemical reaction on mass transfer characteristics over a stretching surface. T...

A New Block Method for Special Third Order Ordinary Differential Equations

B. T. Olabode — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.167.170

A linear multistep method for the direct solution of initial value problems of ordinary differential equations was presented in this article. Collocation approximation method was adopted in the deriva...

The Algebraic K-Theory of Finitely Generated Projective Supermodules P(R) Over a Supercommutative Super-Ring R

Ameer Jaber — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.171.177

Problem statement: Algebraic K-theory of projective modules over commutative rings were introduced by Bass and central simple superalgebras, supercommutative super-rings were introduced by many resear...

Hypercyclic Functions for Backward and Bilateral Shift Operators

N. Faried — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.178.182

Problem statement: Giving conditions for bilateral forward and unilateral backward shift operators over the weighted space of p-summable formal series to be hypercyclic. This provides a generalization...

A New Approach in Cryptographic Systems Using Fractal Image Coding

Nadia M.G. Al-Saidi — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.183.189

Problem statement: With the rapid development in the communications and information transmissions there is a growing demand for new approaches that increase the security of cryptographic systems. Appr...

Soret and Dufour Effects on Natural Convection Flow Past a Vertical Surface in a Porous Medium with Variable Surface Temperature

Hassan A.M. El-Arabawy — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.190.198

Problem statement: In this research the researchers studied and made an analysis to the heat and mass transfer characteristics of natural convection about a vertical surface embedded in a saturated po...

Ant Colony Optimization for Solving Solid Waste Collection Scheduling Problems

Z. Ismail — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.199.205

Problem statement: Southern Waste Management environment (SWM environment) is a company responsible for the collection and disposal of solid waste for the city of Johor Bahru, a city with over one mil...

An Optimal Control Approach to Inventory-Production Systems with Weibull Distributed Deterioration

Md. Azizul Baten — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.206.214

Problem statement: We studied the inventory-production system with two-parameter Weibull distributed deterioration items. Approach: The inventory model was developed as linear optimal control problem ...

The Numerical Computation of Rational Structures and Asymptotic Standard Deviations in Causal Time Series Data

Concepción González-Concepción — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.215.225

Problem statement: The specific properties of data series are of primary importance in several sciences. In the field of time series analysis, several researchers have considered the rational approxim...

Robust Logistic Regression to Static Geometric Representation of Ratios

Alireza Bahiraie — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.226.233

Problem statement: Some methodological problems concerning financial ratios such as non-proportionality, non-asymetricity, non-salacity were solved in this study and we presented a complementary techn...

Modeling and Forecasting Volatility of the Malaysian Stock Markets

Ahmed Shamiri — 2009-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2009; doi:10.3844/jmssp.2009.234.240

Problem statement: One of the main purposes of modeling variance is forecasting, which is crucial in many areas of finance. Despite the burgeoning interest in and evaluation of volatility forecasts, a...