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Now showing items 1-10 of 14
SENDing MORE MONEY in any base
(Mathematical Association of America, 2006)
One of the most significant conceptual jumps involved in algebra is the use
of letters (and other symbols) to represent numbers. One way to get students
used to this notion is via puzzles. This paper describes a ...
Exploring mathematical concepts in literature
(Association for Middle Level Education, 2008)
Pintar el octaedro
(Sociedad Matematica Mexicana, 2007-07)
The convergence of difference boxes
(Mathematical Association of America, 2005)
We consider an elementary mathematical puzzle known as a "difference box" in terms of a discrete map from R⁴ to R⁴ or , canonically, from a subset of the first R² into itself. We identify the map's unique canonical fixed ...
The effect of the HIV/AIDS epidemic on Africa's truck drivers
(American Institute of Mathematical Sciences, 2005-10)
The AIDS epidemic is having a growing impact on the transport
sector of the economy of sub-Saharan Africa, where long-distance truck drivers
are at an increased risk of infection due to their frequent contacts with ...
Sharpness of saturation in harvesting and predation
(American Institute of Mathematical Sciences, 2009-10)
Harvesting and predation occur through contact processes in which the rate at which the managed (prey) population can be found depends on the population size, usually saturating at high densities. Many models incorporate ...
Effects of education, vaccination and treatment on HIV transmission in homosexuals with genetic heterogeneity
(2004)
Genetic studies report the existence of a mutant allele Δ32 of CC R5 chemokine receptor gene at high allele frequencies ( 10%) in Caucasian populations. The presence of the allele is believed to provide partial or full ...
A simple vaccination model with multiple endemic states
(Elsevier, 2000)
A simple two-dimensional SIS model with vaccination exhibits a backward bifurcation for some parameter values. A two-population version of the model leads to the consideration of vaccination policies in paired border towns. ...
Vector consumption and contact process saturation in sylvatic transmission of T. cruzi
(Taylor & Francis, 2006)
Recent research in the transmission of the protozoan parasite Trypanosoma cruzi,
some strains of which cause Chagas’ disease, suggests that consumption of vectors
by sylvatic hosts such as raccoons may play a role in ...
Am I too fat? Bulimia as an epidemic
(Elsevier, 2003)
For at least the past ten years, eating disorders have had a major impact in the
physical and mental health of women, particularly young women. Anorexia and bulimia
nervosa are closely linked eating disorders. Anorexia ...