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- Rohana J. Karunamuni, Qingguo Tang, Bangxin Zhao
- Computational Statistics & Data Analysis
- 2015

- Jingjing Wu, Rohana J. Karunamuni, Biao Zhang
- J. Multivariate Analysis
- 2010

- James T. Ding, Rohana J. Karunamuni
- ICCSA
- 2003

In this paper we adopt the dynamic system design approach to develop an integrated model system for the scrap-processing problem under JIT and implement it as a kind of DSS plug-in for the ERP system. This solution represents the value-added migration strategy toward the evolving global emanufacturing operation. The convenience and flexibility of the… (More)

- Qingguo Tang, Rohana J. Karunamuni
- Computational Statistics & Data Analysis
- 2016

- Rohana J. Karunamuni, Laisheng Wei
- Int. J. Math. Mathematical Sciences
- 2006

We investigate the empirical Bayes estimation problem of multivariate regression coefficients under squared error loss function. In particular, we consider the regression model Y = Xβ+ ε, where Y is an m-vector of observations, X is a known m× k matrix, β is an unknown k-vector, and ε is anm-vector of unobservable random variables. The problem is squared… (More)

- James T. Ding, Rohana J. Karunamuni
- IJMTM
- 2008

- Jingjing Wu, Rohana J. Karunamuni
- J. Multivariate Analysis
- 2012

Minimum distance techniques have become increasingly important tools for solving statistical estimation and inference problems. In particular, the successful application of the Hellinger distance approach to fully parametric models is well known. The corresponding optimal estimators, known as minimum Hellinger distance estimators, achieve efficiency at the… (More)

Let (Y1,θ1), . . . ,(Yn,θn) be independent real-valued random vectors with Yi, given θi, is distributed according to a distribution depending only on θi for i= 1, . . . ,n. In this paper, best linear unbiased predictors (BLUPs) of the θi’s are investigated. We show that BLUPs of θi’s do not exist in certain situations. Furthermore, we present a general… (More)

- Qingguo Tang, Rohana J. Karunamuni
- J. Multivariate Analysis
- 2013

- Rohana J. Karunamuni, Jingjing Wu
- Computational Statistics & Data Analysis
- 2011