The pitman nearness criterion and its determination

A general method for determining Pitman Nearness is given In the case of univariate estimators. This method is then applied to some estimation problems. The concept of Pitman Nearness is also generalized to the multivariate case. The James-Stein estimators are used to illustrate the multivariate comparison.     

Chain ratio type estimator for ratio of two population m3ans using auxiliary characters

In this paper we have proposed chain ratio type estimators for ratio of two population means using two auxiliary characters. The expressions for bias and mean square error of these estimators have been derived. A comparison of the proposed estimator with that of double sampling estimator has been made in terms of mean square error. An emperical study has also been made.     

On the total sojourn time of particles in semi-markov compartmental system with branching particles

We consider a semi-Markov compartroental system with branching particles, Me study the total sojourn time of all the particles and obtain the asymptotic behaviour of its mean. We also discuss some special systems.     

Maximum likelihood estimation for the generalized poisson distribution

The generalized Poisson distribution;containing two

parameters and studied by many researchers; describes the distribution of busy periods under a queueing system and has very interesting properties; The probabilities for successive classes depend upon the previous occurrences; The problem of admissible maximum likelihood estimators for for the parameters Is discussed and a necessary and sufficient condition is derived for which unique admissible maximum likelihood estimators exist; The first; order terms in the biases; variances and the covariance of these maximum likelihood estimators are obtained.     

Managing green productivity: Some strategic directions

The twentieth century has been the hallmark for managing total productivity, where the emphasis is towards maximization of outputs commensurate with the consumption of inputs. This is being challenged now to evolve the world class manufacturing strategy requiring a paradigm shift. This shift is towards green productivity, which looks forward to socially appropriate production and consumption aiming at value innovation and resource conservation. This paper is an attempt to outline the concepts and experiential learning about green productivity.     

Books Received

In addition to acting as teachers, social work educators can play many other roles in relation to their students—including sexual partner, friend, therapist, or employer. Combining the role of instructor with one of these other roles may lead to ethical violations and dilemmas. This article urges educators to consider their power differential and the potential for harm to their students before entering a dual relationship. It reviews the NASW Code of Ethics and relevant literature about dual relationships in practice and in academia; discusses examples of dual relationships in social work education; and formulates questions for educators to use in assessing ethical practice.     

A further note on a theorem on the difference of the generalized inverses of two nonnegative definite matrices

Andrews and Phillips (1986) gave a simplified proof for the result that established the nonnegative definiteness of the difference of the Moore-Penrose inverses of two nonoegative definite matrices, a result originally due to Milliken and Akdeniz (1977), The purpose of this paper is to offer a simple proof for a generalization of this result,     

TMR: An Automated System for Managing Revenue

Abstract

The Total Medical Record (TMR) system used by the Division of University Health Services at Duke University is an integrated medical and management information system. One module supports the financial needs of the division. To facilitate managerial performance, TMR automatically prints insurance claims, refund statements, revenue summary data, service utilization, itemized visit statements, monthly patient bills, dunning letters, and has a host of unique features that aid management with controlling the private fees generated by the University Health Services. In addition, the servicing of prepaid programs is accommodated, and the splitting of charges between prepaid and fee-for-service programs occurs automatically.