A note on least squares estimation and the blue in a generalized linear regression model

In a generalized linear regression model, least squares and Gauss-Markov estimators differ, in general, if the variance-covariance matrix of the disturbances is singular. In the present note it is shown that, nevertheless, the conventional least squares procedure leads to a Gauss-Markov estimator if it is applied to a modified model which results from adding dummy constraints to the original model. These constraints reflect the effects of the singularity of the variance- convariance matrix. As a consequence, a Gauss-Markov estimate may always be obtained by standard least squares minimization, which offers considerable computational advantages.     

INTRAWEEK SEASONALITY IN THE FEDERAL FUNDS MARKET

This paper examines daily Federal funds interest rates for intraweek seasonality over the period 1966 through June 1982. Seasonals are identified using several techniques and are found to vary over time in both intensity and relative size. Furthermore, seasonality is not limited to a Wednesday effect. The seasonals are used to test the effectiveness of active reserve management based on seasonal rate forecasts. The results indicate that extraordinary risk-adjusted profits are not likely.     

Tourism course proposal for a social science curriculum

As the economic and environmental impacts of mass tourism grow, it becomes vital that information concerning the industry is disseminated to as wide an audience as possible. Since many of the future opinion leaders attend university, one area where a balanced assessment of tourism is required is within the social science curriculums of universities. The purpose of this paper is to illustrate some issues and challenges involved with the introduction of a tourism course during this era of fiscal restraint and accountability. It is suggested that a new course proposal should include a comprehensive definition of tourism and its component parts; that it should consider its scholarly significance and operational feasibility within the university community; and that its place within and contribution to a specific discipline be demonstrated, since it is easier to innovate within the existing university structure.     

Foreign investment and industrial transformation: A Brazilian case study

The causes and consequences of ‘denationalization’, that is, the shift from local to foreign ownership, are examined for the case of the Brazilian pharmaceutical industry. The negative consequences that have been attributed to denationalization by 'dependency theory' are substantiated, but only in part. It is argued that the most interesting contrasts are not between the behavior of foreign and local firms in the industry but between the private sector and a recently created state enterprise, and that future analysis of dependent capitalist development should focus on the interaction of the state and foreign capital.