Volume 8, Issue 4 (2012) | Journal of Mathematics and Statistics

Performance of Multiple Linear Regression and Nonlinear Neural Networks and Fuzzy Logic Techniques in Modelling House Prices

Siti Amri — 2012-12-18

Journal of Mathematics and Statistics, Published online: 18 December 2012; doi:10.3844/jmssp.2012.419.434

House price prediction continues to be important for government agencies insurance companies and real estate industry. This study investigates the performance of house sales price models based on line...

New Family of Logarithmic Lifetime Distributions

Said Hofan Alkarni — 2012-12-20

Journal of Mathematics and Statistics, Published online: 20 December 2012; doi:10.3844/jmssp.2012.435.440

In this study a new lifetime class with decreasing failure rate is introduced by compounding truncated logarithmic distribution with any proper continuous lifetime distribution. The properties of the ...

4D N = 1 Supersymmetric Yang-Mills Theories on Kahler-Ricci Soliton

Bobby Eka Gunara — 2013-01-02

Journal of Mathematics and Statistics, Published online: 2 January 2013; doi:10.3844/jmssp.2012.441.445

In this study we consider four dimensional N = 1 supersymmetric gauge Yang-Mills theory whose complex scalar manifold is Kahler and deforms with respect to a real parameter. The deformation of the geo...

Towards Some General Ecological Principles

Arild Wikan — 2013-01-03

Journal of Mathematics and Statistics, Published online: 3 January 2013; doi:10.3844/jmssp.2012.446.460

Discrete deterministic age-structured, stage-structured and difference delay equation population models are analysed and compared with respect to stability and nonstationary behaviour. All three model...

Minimization of ℓ₂-Norm of the KSOR Operator

A. I. Alzaki — 2013-01-08

Journal of Mathematics and Statistics, Published online: 8 January 2013; doi:10.3844/jmssp.2012.461.470

We consider the problem of minimizing the ℓ2-norm of the KSOR operator when solving a linear systems of the form AX = b where, A = I +B (TJ = -B, is the Jacobi iteration matrix), B is skew symmetr...

Assessing Convergence of the Markov Chain Monte Carlo Method in Multivariate Case

Denismar Alves Nogueira — 2013-01-08

Journal of Mathematics and Statistics, Published online: 8 January 2013; doi:10.3844/jmssp.2012.471.480

The formal convergence diagnosis of the Markov Chain Monte Carlo (MCMC) is made using univariate and multivariate criteria. In 1998, a multivariate extension of the univariate criterion of multiple se...

Parameter Estimation and Determination of Sample Size in Logistic Regression

Adeleke Kazeem Adedayo — 2013-02-04

Journal of Mathematics and Statistics, Published online: 4 February 2013; doi:10.3844/jmssp.2012.481.488

The determination of Sample-Size is often an important step in planning a statistical study and it is usually a difficult task. Among the important hurdles to be surpassed, one must obtain an estimate...

On Multiresponse Semiparametric Regression Model

Sri Haryatmi — 2013-02-20

Journal of Mathematics and Statistics, Published online: 20 February 2013; doi:10.3844/jmssp.2012.489.499

The modeling between predictors and response in statistics sometimes deals with more than one response or multiresponse situation. Furthermore, it can be happen that some predictors have linear relati...

Seasonal Autoregressive Integrated Moving Average Model for Precipitation Time Series

Yan Wang — 2013-02-20

Journal of Mathematics and Statistics, Published online: 20 February 2013; doi:10.3844/jmssp.2012.500.505

Predicting the trend of precipitation is a difficult task in meteorology and environmental sciences. Statistical approaches from time series analysis provide an alternative way for precipitation predi...

Limit Theorems for a Class of Additive Functionals of Symmetric Stable Process and Fractional Brownian Motion in Besov-Orlicz Spaces

M. Ait Ouahra — 2013-02-22

Journal of Mathematics and Statistics, Published online: 22 February 2013; doi:10.3844/jmssp.2012.506.516

We use the Potter's Theorem and the tightness criterion in Besov-Orlicz spaces, recently proved, to generalize some limit theorem for occupation times problem of certain self-similar process, nam...