A model for forecasting wheat production

A model for forecasting production of wheat considering the effects of irrigation, fertilizer application, high yielding varieties, rainfall, labour and farm machinery is derived. Applicabilitty of this model is tested for Indian conditions and is found satisfactory. Strength and limitations of this model can be applied successfully to other national conditions also. This model has been applied to the prediction of wheat production using two growth relations.     

Some economic effects of standards—Comment

The bulk of the literature on the empirical validation of the purchasing power parity (PPP) has been based on cointegration, although on rare occasions band-spectrum analysis has also been used. The former is tied down to the use of ‘notional’ time in the analysis of systems away from equilibrium, and the latter is circumscribed by the Slutzky-Yule effect. Both these drawbacks are sought to be remedied in the present paper, which seeks to bring to bear upon the PPP a new approach derived from the concept of a time-varying spectrum. Both absolute and relative versions of the doctrine are tested for ten advanced economies over the post-1973 period. Uniform rejection of the PPP occurs with the US $ as base, but with centring on the DM, the evidence seems to be supportive of the PPP (in its relative version) for three European countries.     

Regional welfare loss meaures of the 1973 oil embargo: a numerical methods approach

A simple exercise of time-series analysis shows that the presence of the phonomenon of temporal aggregation in quarterly consumption data can substantially alter the empirical inference about Hall' mocel of consumption behaviour. This fact has received almost no attention in the econometric research in this field.     

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.     

Customs Union and Gains from Trade Under Imperfect Competition: Variation of a Kemp-Wan Theme

In a world where firms are oligopolists, is it possible to create a customs union that raises the welfare of member countries without hurting non-member countries? We give sufficient conditions for an affirmative answer.     

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.     

A note on measuring political participation in comparative research

This article presents an application of Prezeworski and Teune's so-called “identity-equivalence method” to a large set of indicators of political participation. By relaxing commonly held assumptions about necessary distinctions among types of participation, it is found that the distinction between “conventional” and “unconventional” modes of participation is unnecessary, while the distinction between “government” and “nongovernment” has some merit. The findings also lend further support to the claims of Prezeworski and Teune that the identity-equivalence method is preferable to the identical indicator method.