A Profile: Mollie Huston Lee

MOLLIE MACGREGOR and KAYE STACEY

Research studies have found that the majority of students up to age 15 seem unable to interpret algebraic letters as generalised numbers or even as specific unknowns. Instead, they ignore the letters, replace them with numerical values, or regard them as shorthand names. The principal explanation given in the literature has been a general link to levels of cognitive development. In this paper w...

AMA Series : We are Mollie Woodworth and

Ongoing, random mutation to DNA ensures that no two cells in an individual are genetically identical. Since mature neurons can survive for the lifetime of an individual, their DNA is exposed to mutagens (oxygen free radicals, electromagnetic radiation, endogenous transposable elements, etc.) on an ongoing basis. These forces have the potential to induce somatic mutations, and potentially contri...

Jared A Lee

A generalization of Lee codes

Motivated by a problem in computer architecture we introduce a notion of the perfect distance-dominating set, PDDS, in a graph. PDDS s constitute a generalization of perfect Lee codes, diameter perfect codes, as well as other codes and dominating sets. In this paper we initiate a systematic study of PDDS s. PDDS s related to the application will be constructed and the non-existence of some PDDS...

Lee 25_8

4-Hydroxynonenal (4-HNE) is a peroxidation product of ˆ-6-poly-unsaturated fatty acids and exerts growth modifying as well as cytotoxic activities. This aldehyde component of oxidized lipid is increased during the aging process. In this study, to characterize the potential role of the lipid peroxidation product in aging, we studied the effects of 4-HNE on cell proliferation and activation of ce...