Marie Henderson

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We give an alternative proof of the fact that a planar function cannot exist on groups of even order. The argument involved leads us to define a class of functions which we call semi-planar. Through the introduction of an incidence structure we construct semi-biplanes using semi-planar functions. The method involved represents a new approach to constructing(More)
We report on a recent implementation of Giesbrecht’s algorithm for factoring polynomials in a skew-polynomial ring. We also discuss the equivalence between factoring polynomials in a skew-polynomial ring and decomposing p-polynomials over a finite field, and how Giesbrecht’s algorithm is outlined in some detail by Ore in the 1930’s. We end with some(More)
We consider the implications of the equivalence of commutative semifields of odd order and planar Dembowski-Ostrom polynomials. This equivalence was outlined recently by Coulter and Henderson. In particular, following a more general statement concerning semifields we identify a form of planar Dembowski-Ostrom polynomial which must define a commutative(More)
The development of Public Key Infrastructures (PKIs) is highly desirable to support secure digital transactions and communications throughout existing networks. It is important to adopt a particular trust structure or PKI model at an early stage as this forms a basis for the PKI’s development. Many PKI models have been proposed but use only natural language(More)
This study examined the percentage of steps implemented from treatment plans following consultation with teachers. Interventions were implemented for 39 elementary school students referred for consultation and treatment for challenging behavior or academic deficits. An integrated support model that included antecedent social influence and planning combined(More)