Baxter permutations apparently first arose in attempts to prove the “commuting function” conjecture of Dyer (see [I]), namely, if f and g are continuous functions mapping [0, l] into [0, l] which commute under composition, then they have a common fixed point. Although numerous partial results were obtained for the conjecture (e.g., see [l, 3, 7, IO]), it was ultimately shown in 1967 to be false...

How to repair the injured spinal cord is a question that scientists have struggled with for decades. The answer is of course still a mystery. But ask people on the street for their opinion and they will likely offer something like “stem cells” as the solution. I find it amusing (and honestly, a bit annoying) that family and friends continue to ask me if there is anything new with stem cells. My...

When an elastomeric material is subject to sufficiently high temperature, macromolecular network junctions can undergo time-dependent scission and re-crosslinking (healing). The material system then consists of molecular networks with different reference states. A constitutive framework, based on the experimental work of Tobolsky, is used to determine the evolution of deformation of a solid rub...

There are many causes for stones in the urinary tract (Melick and Henneman, 1958; Boyce and Bradshaw, 1961 ; Maurice and Henneman, 1961). These include the presence of urinary solutes in abnormally high concentrations (Hodgkinson and Pyrah, 1958 ; Nordin and Robertson, 1966), a variety of factors diminishing their solubility (Elliot et al., 1961 ; Howard et al., 1962; Metcalfe-Gibson et al., 19...

Mapping relational data to RDF is an important task for the development of the Semantic Web. To this end, the W3C has recently released a Recommendation for the so-called direct mapping of relational data to RDF. In this work, we propose an enrichment of the direct mapping to make it more faithful by transferring also semantic information present in the relational schema from the relational wor...

By 1953 Martin Beckmann had formulated and analyzed the static, deterministic userequilibrium (UE) route choice model with variable origin-destination flows (demand) (Beckmann et al, 1956; Boyce, 2004). Twenty years later, Suzanne Evans (1973, 1976) proposed and analyzed an algorithm for solving a version of Beckmann’s model that corresponded to practitioner models with origin-destination (OD) ...

Database designers and students of computer science in tertiary institutions find it difficult to learn database theory in which database decomposition is a major aspect. This work presents a visualization tool to simplify the study of decomposition algorithms behaviours which would assist the students and database designers to decompose any relational schema with its functional dependencies in...

Recently, novel and uniform deformation-induced pattern transformations have been found in periodic elastomeric cellular solids upon reaching a critical value of applied load [Mullin, T., Deschanel, S., Bertoldi, K., Boyce, M.C., 2007. Pattern transformation triggered by deformation. Phys. Rev. Lett. 99, 084301; Boyce, M.C., Prange, S.M., Bertoldi, K., Deschanel, S., Mullin, T., 2008. Mechanics...

Evidence indicates that maternal prenatal distress predicts problematic health and behavioral outcomes in children as well as infant/child cortisol levels and negative emotionality as reviewed here. Evidence that these physiological and behavioral characteristics themselves moderate environmental effects on development in a "for better and for worse" manner consistent with Belsky's differential...

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