Volume 5, Issue 1 (2009) | Journal of Mathematics and Statistics

The Performance of Latent Root-M based Regression

Habshah Midi — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.1.9

Problem statement: In the presence of multicollinearity, the estimation of parameters in multiple linear regression models by means of Ordinary Least Squares (OLS) is known to suffer severe distortion...

Failure Probability of 2-within-Consecutive-(2, 2)-out-of-(n, m): F System for Special Values of m

E. M.E.L. Sayed — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.10.14

Problem statements: In this research, the researcher aimed to discuses the system failure probability of the model 2-within-consecutive (2, 2) out of (n, m) system for special values of m. Approach: T...

Simulation Planning for Sustainable Use of Land Resources: Case study in Diamou

Diallo Yacouba — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.15.23

In this study, we presented the simulation planning scheme to project land and land resources use changes at a local scale for Diamou (MALI). Problem statement: All the land cover types were under the...

The New Variable-Length Key Symmetric Cryptosystem

Davood Rezaei Pour — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.24.31

Problem statement: In this study, we proposed a new 64-bit block cipher that accepted a variable-length key up to 512 bits, which was suitable for implementation in a variety of environments. Approach...

Why College or University Students Hate Proofs in Mathematics?

Mbaïtiga Zacharie — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.32.41

Problem Statement: A proof is a notoriously difficult mathematical concept for students. Empirical studies have shown that students emerge from proof-oriented courses such as high-school geometry, int...

Stochastic Behavior of a Two-Unit Warm Standby System with Two Types of Repairmen and Patience Time

G. S. Mokaddis — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.42.46

Problem statement: In this study we investigated the probabilistic analysis of a two-unit warm standby system with constant failure rate and two types of repairmen and patience time. The first repairm...

A Numerical Test on the Riemann Hypothesis with Applications

N. K. Oladejo — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.47.53

Problem statement: The Riemann hypothesis involves two products of the zeta function ζ(s) which are: Prime numbers and the zeros of the zeta function ζ(s). It states that the zeros of a certain comp...

A Robust Rescaled Moment Test for Normality in Regression

Md. Sohel Rana — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.54.62

Problem statement: Most of the statistical procedures heavily depend on normality assumption of observations. In regression, we assumed that the random disturbances were normally distributed. Since th...

The Banach space m_p(X), for 1 ≤ p <8 has the Banach-Saks Property

Naim L. Braha — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.63.64

Problem statement: In the theory of Banach spaces one of the problems which describes geometric property of Banach spaces is Banach-Saks Property. In this context we were known many Banach spaces whic...

Fuzzy Reliability and Fuzzy Availability of the Serial Process in Butter-Oil Processing Plant

Kuldeep Kumar — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.65.71

Problem statement: The purpose of this study was to compute fuzzy reliability and fuzzy availability of the serial process in butter-oil processing plant for various choices of failure and repair rate...

On Hyperplanes of the Geometry D_4,2 and their Related Codes

Abdelsalam Abou Zayda — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.72.76

Problem statement: The point-line geometry of type D4,2 was introduced and characterized by many authors such as Shult and Buekenhout and in several researches many of geometries were considered to co...

On New Bijective Convolution Operator Acting for Analytic Functions

Oqlah Al-Refai — 2009-03-31

Journal of Mathematics and Statistics, Published online: 31 March 2009; doi:10.3844/jmssp.2009.77.87

Problem statement: We introduced a new bijective convolution linear operator defined on the class of normalized analytic functions. This operator was motivated by many researchers namely Srivastava, O...