Research suggests that students who are aware of their own confusions and take steps to resolve those confusions are most likely to benefit from a learning experience. At the same time, there are conversational maxims, such as Leech’s politeness maxims, that may inhibit a student from expressing and pursuing confusions within a tutorial dialogue. We investigated students’ expressions of confusi...

We consider the problem of optimal recovery of solutions of the generalized heat equation in the unit ball. Information is given at two time instances, but inaccurate. The solution is to be constructed at some intermediate time. We provide the optimal error and present an algorithm which achieves this error level. The application of optimal recovery theory to problems of partial differential eq...

The purpose of the current investigation was to validate an automatic path change feature developed for the ProZone3® system using a case study where a single player was filmed during 97 minutes actual match play. The player’s path changes were analysed in detail by a human observation process and compared to the path changes determined by ProZone3®. A secondary aim was to validate the times wh...

In a stochastic financial exchange economy, two financial structures are equivalent if, for each given state price, regardless the associated arbitrage free price, the marketable payoffs are identical. The key property of two equivalent financial structures is that, when associated with any standard exchange economy, they lead to the same financial equilibrium. We exhibit a sufficient condition...

This paper examines the effect of financial frictions on the strength of the monetary transmission mechanism. Credit channel theory implies that the transmission mechanism of monetary policy should be stronger in countries with high levels of financial frictions, all else equal. The intuition is that in these countries, external finance premiums are more sensitive to firms’ financial leverage. ...

Diversity on COTS selection is causing that certain companies spend large amount of time and effort evaluating those COTS for integration within their custom made systems. This evaluation is most of the times based on de-facto rules and techniques that unfortunately may lead the company in choosing the worse or not the best component for its system. This research gives an interpretation on how ...

E-government is far too often taken to mean ‘government business as usual’ plus the internet. This paper puts forward the basis for an alternative orientation, locating e-government against a background of profound social changes.

Consider the following problem. You are given an alphabet of k distinct symbols and are told that the i symbol occurred exactly ni times in the past. On the basis of this information alone, you must now estimate the conditional probability that the next symbol will be i. In this report, we present a new solution to this fundamental problem in statistics and demonstrate that our solution outperf...

We regard the problem of communication in the presence of faulty transmissions. In contrast to the classical works in this area, we assume some structure on the times when the faults occur. More realistic seems the model that all faults occur in some small time interval. Like previous work, our problem can best be modelled as a two-player perfect information game, in which one player (“Paul”) h...

This report summarizes the findings of a UNDP-sponsored study on the structure of the financial sector, central bank policy, and employment outcomes in Ghana. The financial sector is the primary conduit through which monetary policy affects real economic outcomes, and monetary policy determines the resources available to financial institutions. Therefore, monetary policy must be coordinated wit...