John Frederick

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Despite pronounced reductions in child mortality in industrialised countries, variations exist within and between countries. Many child deaths are preventable, and much could be done to further reduce mortality. For the family, their community, and professionals caring for them, every child's death is a tragedy. Systematic review of all child deaths is(More)
A thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy in The Faculty of Graduate Studies Department of Mathematics. Let M k be the category of algebras over a unique factorization domain k, and let ind −Aff k denote the category of pro-representable functions from M k to the category E of sets. It is shown that(More)
Depression is increasingly recognized as a significant public health problem among older adults. Because the condition is highly treatable and currently undertreated among community-based older adults, late-life depression is an appropriate focus for disease prevention programs. We report findings from a recent project to review the scientific literature(More)
BACKGROUND The diagnostic accuracy of the Patient Health Questionnaire-9 (PHQ-9) for assessment of depression in elderly persons in primary care settings in the United States has not been previously addressed. Thus, the purpose of this study was to evaluate the test performance of the PHQ-9 for detecting major and minor depression in elderly patients in(More)
  • Pierre-Marie Robitaille, Pierre Simon Laplace, Alexander Wilson, William Herschel, Hermann Von Helmholtz, Herbert Spencer +14 others
  • 2011
History has the power to expose the origin and evolution of scientific ideas. How did humanity come to visualize the Sun as a gaseous plasma? Why is its interior thought to contain blackbody radiation? Who were the first people to postulate that the density of the solar body varied greatly with depth? When did mankind first conceive that the solar surface(More)
Section 1: The Evolving T&E Environment and Culture Any level of research into the test and evaluation (T&E) of complex systems will show that T&E is a daunting task. Scoping and planning a T&E program in advance of development could be considered an art of analysis and prediction. Conducting and reporting a T&E program could be considered an art of balance(More)
Goal of the Talk: To show that, despite appearances, the form of Russian genitive plurals does not require trans-derivational correspondence, and moreover, it does not require reference to class information, upholding an important generalization about markedness of the plural. (1) p'is + a ('to write') a. p'is + a + u = p'išu [1sg] (a truncates) +ot =(More)
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