Volume 9, Issue 2 (2013) | Journal of Mathematics and Statistics

ORDER STATISTICS FROM INDEPENDENT NON-IDENTICALLY DISTRIBUTED DISCRETE RAYLEIGH DISTRIBUTION

Amna Abdullatif Jamjoom — 2013-04-23

Journal of Mathematics and Statistics, Published online: 23 April 2013; doi:10.3844/jmssp.2013.72.76

This study deals with the subject of Order Statistics (OS) and its moments for independent non-identically distributed discrete random variables rv’s drawn from one parameter discrete Rayleigh distr...

OPTIMIZING AN ALUMINUM EXTRUSION PROCESS

Mohammed Ali Hajeeh — 2013-04-23

Journal of Mathematics and Statistics, Published online: 23 April 2013; doi:10.3844/jmssp.2013.77.83

Minimizing the amount of scrap generated in an aluminum extrusion process. An optimizing model is constructed in order to select the best cutting patterns of aluminum logs and billets of various sizes...

A STUDY ON NEW PRODUCT DEMAND FORECASTING BASED ON BASS DIFFUSION MODEL

Zuhaimy Ismail — 2013-04-29

Journal of Mathematics and Statistics, Published online: 29 April 2013; doi:10.3844/jmssp.2013.84.90

A forecasting model of new product demand has been developed and applied to forecast new vehicle demand in Malaysia. Since the publication of the Bass model in 1969, innovation of new diffusion theory...

SOME STATISTICAL PROPERTIES OF THE SOLUTIONS OF A SYSTEM OF TWO DIMENSIONAL STOCHASTIC FREDHOLM INTEGRAL EQUATIONS CONTAINS GAMMA PROCESSES

Mohammad Wahdan Muflih — 2013-05-04

Journal of Mathematics and Statistics, Published online: 4 May 2013; doi:10.3844/jmssp.2013.91.101

In this study, we find the two solutions of a system of two dimensional stochastic Fredholm integral equations contains two gamma processes with different values of the two parameters (the first contr...

LAG SELECTION OF THE AUGMENTED KAPETANIOS-SHIN-SNELL NONLINEAR UNIT ROOT TEST

Jen-Je Su — 2013-05-04

Journal of Mathematics and Statistics, Published online: 4 May 2013; doi:10.3844/jmssp.2013.102.111

We provide simulation evidence that shed light on several size and power issues in relation to lag selection of the augmented (nonlinear) KSS test. Two lag selection approaches are considered-the Modi...

STOCHASTIC GROWTH MODEL FOR SPATIAL CLUSTER BIRTH AND DEATH PROCESS WITH MIGRATION

Ro’fah Nur Rachmawati — 2013-05-09

Journal of Mathematics and Statistics, Published online: 9 May 2013; doi:10.3844/jmssp.2013.112.118

In real life, we can encounter the cluster birth and death process with migration, such as the birth of new individuals and disease in certain place and time. These phenomena can be represented by sto...

MIXED CONVECTION BOUNDARY LAYER FLOW ON A VERTICAL SURFACE IN A POROUS MEDIUM SATURATED BY A NANOFLUID WITH SUCTION OR INJECTION

M. H.M. Yasin — 2013-05-10

Journal of Mathematics and Statistics, Published online: 10 May 2013; doi:10.3844/jmssp.2013.119.128

An analysis of the steady mixed convection boundary layer flow past a vertical permeable surface embedded in a porous medium saturated by a nanofluid is performed in this study. Numerical solutions of...

ON THE PRODUCT AND RATIO OF TWO GENERALIZED ORDER STATISTICS FROM THE GENERALIZED BURR TYPE-II DISTRIBUTION

Mohamed Maswadah — 2013-05-10

Journal of Mathematics and Statistics, Published online: 10 May 2013; doi:10.3844/jmssp.2013.129.136

In this study, the probability density functions of the product and quotient of two generalized order statistics from the generalized Burr Type-XII distribution have been derived, using the Mellin tra...

GENERALIZED LINEAR MIXED MODELS WITH SPATIAL RANDOM EFFECTS FOR SPATIO-TEMPORAL DATA: AN APPLICATION TO DENGUE FEVER MAPPING

Krisada Lekdee — 2013-05-13

Journal of Mathematics and Statistics, Published online: 13 May 2013; doi:10.3844/jmssp.2013.137.143

The Generalized Linear Mixed Models (GLMMs) with spatial random effects for spatio-temporal data are proposed. A hierarchical Bayesian method is used for parameter estimation. The random effects are a...

ON ASYMPTOTICALLY LACUNARY STATISTICAL EQUIVALENT SEQUENCES IN PROBALISTIC NORMED SPACE

Ayhan Esi — 2013-05-15

Journal of Mathematics and Statistics, Published online: 15 May 2013; doi:10.3844/jmssp.2013.144.148

In this study we study the new concept of asymptotically lacunary statistical convergent sequences in probabilistic normed spaces and prove some basic properties.