Media allocation model using nonlinear benefit curves

An integral part of planning advertising campaigns involves the selection of those media vehicles that maximize the effectiveness of the advertising effort. This article describes a media allocation model designed to provide the media planner, responsible for a particular advertising campaign, with relevant information for use in selecting the most appropriate media vehicles and in determining the number of insertions in each vehicle. It is based on the derivation of nonlinear benefit curves for candidate media vehicles that can be derived from commercially available response data and from subjective estimates gathered from media planning experts. When tested in an actual advertising campaign, the results serve to provide relevant information that can make the media allocation decision a more objective one.     

European raw materials policy — past and current development

In world-wide negotiations and agreements on raw material problems the Community is either taking part as such or represented by the member state providing the Chairman of the Council. Admittedly it has often been difficult to work out the required common position for the member states, and only insofar as a consensus has been reached between them can therefore be talked of a European Raw Material Policy.

     

Stock Market Volatility in an Emerging Market: Further Evidence from the Athens Stock Exchange

We investigate the time series properties of the daily and weekly returns from the Athens Stock Exchange (ASE) index for the years 1987 to 1997. We investigate whether important time-series characteristics have changed significantly over time. The Greek market has recently undergone major changes including complete capital flow liberalization, the implementation of computerized trading, as well as significant increases in market volume and capitalization; we thus contrast the 1987–90 and 1991–97 periods. Our findings suggest the dynamics of the ASE composite index returns have changed as the market has developed.