Retelling the Future: Don Juan Manuel's "Exenplo XI" and the Power of Fiction

In this paper I look at how “Exenplo XI” is both product and reflection of the various traditions and cultures of medieval Iberia and how Juan Manuel forges a new version of this story from these inherited traditions in order to showcase problems of concern to his fourteenth-century audience, namely, the tension between ecclesiastical and Andalusi systems of thought and their representatives and how the author’s manipulation of the frame and the power of fiction itself echoes Don Yllán’s manipulation of magic to test the dean’s mettle. Then I turn to the lessons of “Exenplo XI” regarding the transmission of knowledge and who controls it, as well as the function of speculative fiction and its ability to explore alternative realities and potential futures for both fictional audience (Conde Lucanor) and contemporary twenty-first-century readers

Towards a better understanding of the low income consumer

Research on low-income or poorer consumers and the disadvantages that they encounter in the marketplace is the focus of this paper. A number of commonly held beliefs about low-income consumers need to be challenged but since these consumers are not high priority as target markets there is little investment in the market research that might go some way to dispel them. This paper aims to challenge some of these beliefs and to suggest how this research might be further developed by drawing together research and theories from a range of disciplines including consumer research, psychology and sociological constructs

Cooperation and conflict in family decision making

This study addresses the family dynamics of the decision making process, in particular the issues of cooperation and conflict, in both two parent and lone parent families. Thirty individual and family-group interviews were held (five two-parent families and twenty-five lone parent families). The families all had low incomes, heightening the importance placed on the consumer decision making process. Findings are considered in relation to the interaction between couples as well as parent-child interaction. Overall, cooperation was a more prominent theme than conflict amongst the families and collectivist values tended to dominate

Monotone Volume Formulas for Geometric Flows

We consider a closed manifold M with a Riemannian metric g(t) evolving in direction -2S(t) where S(t) is a symmetric two-tensor on (M,g(t)). We prove that if S satisfies a certain tensor inequality, then one can construct a forwards and a backwards reduced volume quantity, the former being non-increasing, the latter being non-decreasing along the flow. In the case where S=Ric is the Ricci curvature of M, the result corresponds to Perelman's well-known reduced volume monotonicity for the Ricci flow. Some other examples are given in the second section of this article, the main examples and motivation for this work being List's extended Ricci flow system, the Ricci flow coupled with harmonic map heat flow and the mean curvature flow in Lorentzian manifolds with nonnegative sectional curvatures. With our approach, we find new monotonicity formulas for these flows.Comment: v2: final version (as published

Cyclic group actions and embedded spheres in 4-manifolds

In this note we derive an upper bound on the number of 2-spheres in the fixed point set of a smooth and homologically trivial cyclic group action of prime order on a simply-connected 4-manifold. This improves the a priori bound which is given by one half of the Euler characteristic of the 4-manifold. The result also shows that in some cases the 4-manifold does not admit such actions of a certain order at all or that any such action has to be pseudofree.Comment: 13 pages; to appear in Proc. Amer. Math. So

Clinical review: Can we predict which patients are at risk of complications following surgery?

There are a vast number of operations carried out every year, with a small proportion of patients being at highest risk of mortality and morbidity. There has been considerable work to try and identify these high-risk patients. In this paper, we look in detail at the commonly used perioperative risk prediction models. Finally, we will be looking at the evolution and evidence for functional assessment and the National Surgical Quality Improvement Program (in the USA), both topical and exciting areas of perioperative prediction