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In the present work, the high Reynolds number flow past an inclined plate with a splitter plate placed in its wake is considered numerically. A numerical conformal mapping technique is employed to transform the two-plate system into the same number of cylinders: the flow field is assumed to be two-dimensional. The vortex shedding from the inclined plate is modelled using the discrete vortex method. It is shown that the splitter plate has a profound effect on the development of the flow over a range of values of a suitably defined offset parameter and for a range of positions of the leading edge of the splitter plate. The acoustic field is also calculated and the spectrum reflects the flow results.

Four propositions that have been advanced on the basis of verbal intuition are considered. They are given precise interpretation in a formal model and then disproved. The propositions concern intergenerational transfers through schooling; in particular, they concern equality-efficiency conflicts, net benefit calculation, and the role of genetic transmission. (Author/SSH)

This paper reanalyzes the Hansen-Weisbrod-Pechman debate concerning the equity effects of subsidized tuition for higher education. It presents an intergeneration model of income distribution, including educational effects. This model is used to analyze issues in the debate over equity effects. It yields a measure (equity measure) of the sensitivity of income inequality to the level of higher educational subsidy. The equity measure represents what cannot be estimated directly due to lack of data. The model also yields a net benefit measure which represents what can be estimated from available data. The main conclusion from the model is a negative one. In a simple economy, net benefit calculations do not provide a reliable indicator of the equity effects of tuition subsidies for higher education. It is not clear how this conclusion could be reversed by complicating the economy. The conclusion is a negative one because it indicates that the current feasible procedure for answering an important policy question is not reliable. Nevertheless, the model does provide a formal structure, previously lacking, for analyzing issues in this debate. (Author/AM)

The generation of noise by vortex buffeting on a pair of cylinders in tandem in unsteady high-Reynolds-number flow is investigated analytically. The derivation of the governing equations is outlined, and numerical results for several initial vortex configurations are presented in extensive graphs and characterized in detail. Particular attention is given to the possibility of chaotic vortex motion, and it is shown that chaotic motion does not occur when there are three vortices but does appear when there are four.