RESEARCH AND CONSULTANCY: TOWARDS A CONCEPTUAL SYNTHESIS

This paper describes an investigation into some of the apparent similarities between what certain kinds of researchers and consultants do in organizations. Using a facet analysis approach (Foa, 1965), an instrument was devised with the purpose of identifying and delineating overlaps between organizational research and consultancy. Sixty-six British researchers and consultants took part in the study. The results highlight certain specific similarities and suggest that these may represent aspects of research and consultancy which are crucial to their success. The facets of the two activities which emerged from the study as being common are described by reference to the qualitative data which were generated by participants. A number of important implications for the successful conduct of research and consultancy are discussed with particular reference to the process of managing the relationship between investigators and those with whom they work.     

Equilibrium points in an urban retail model and their connection with dynamical systems

In this paper the application of results of dynamical system theory to urban retail models will be discussed. First of all attention is paid to the equilibria of these models; their existence and uniqueness as well as their stability. Next the results are aggravated to the situation of a two zonal system. Finally some economic consequences of parameter changes are described.     

Restricted maximum likelihood estimation under Eisenhart model Ill

For a balanced two-way mixed model, the maximum likelihood (ML) and restricted ML (REML) estimators of the variance components were obtained and compared under the non-negativity requirements of the variance components by L ee and K apadia (1984). In this note, for a mixed (random blocks) incomplete block model, explicit forms for the REML estimators of variance components are obtained. They are always non-negative and have smaller mean squared error (MSE) than the analysis of variance (AOV) estimators. The asymptotic sampling variances of the maximum likelihood (ML) estimators and the REML estimators are compared and the balanced incomplete block design (BIBD) is considered as a special case. The ML estimators are shown to have smaller asymptotic variances than the REML estimators, but a numerical result in the randomized complete block design (RCBD) demonstrated that the performances of the REML and ML estimators are not much different in the MSE sense.     

Identificeren op grond van waarnemingen

This paper is an exposition of some elements of Wald's decision theory. Concepts like a priori distribution, decision function, loss function, risk, Bayes procedures, admissible procedures, minimax procedures, least favourable distribution are introduced all in connection with the problem of classification of observations into two given populations. The exact treatment of the procedures and their mutual relations are illustrated by numerical examples concerning univariate and multivariate normal populations. The extension towards the classification into more than two given populations concludes the paper.     

A Simple Proof of the Equivalence of the Limiting Distributions of the Continuous-Time and the Embedded Process of the Queue Size in the M/G/1 Queue*

This paper presents an extremely simple proof of the known remarkable fact that for the M/G/1 queue the continuous-time process describing the number of customers in the system has the same limiting distribution as the embedded process describing the number of customers in the system just after service completion epochs.     

Testing hypotheses of ghetto morphology

Socioeconomic urban policy has generally treated the American black ghetto as a single community or neighborhood. A study of recent literature suggests that the socioeconomic structure of ghetto space may be developing a spatially systematic heterogeneity. The literature has suggested several hypotheses concerning the socioeconomic morphology of ghetto space, but heretofore these hypotheses have not been tested in any rigorous fashion. This is the objective of this study. The results of these tests suggest that the ghetto is indeed developing as a socioeconomically heterogeneous subsystem spatially parallel to the overall urban system. This implies that a multiplicity of communities or neighborhoods are developing over time. In order to be effective, the processes of urban planning and policy development must address this evolving pattern.