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- C Welinder-Olsson, K Stenqvist, +8 authors B Kaijser
- Epidemiology and infection
- 2004

This is the first report of a major foodborne outbreak of enterohaemorrhagic Escherichia coli (EHEC) in Sweden. It occurred among the nursing staff at a children's hospital with approximately 1600 employees. Contaminated lettuce was the most likely source of infection. Nine persons were culture-positive for Escherichia coli (E. coli) O157 and… (More)

Will an exotic species thrive in a new territory? What are the best management options to eradicate a population (pest species) or to facilitate population recovery (endangered species)? Population modeling helps answer these questions by integrating mathematics and biology. Often, a single species cannot be properly modeled as one population, but instead… (More)

- Michael T. Holm
- Computers & Mathematics with Applications
- 2011

The author's purpose in this dissertation is to introduce, develop and apply the tools of discrete fractional calculus to the arena of fractional di¤erence equations. To this end, we develop the Fractional Composition Rules and the Fractional Laplace Transform Method to solve a linear, fractional initial value problem in Chapters 2 and 3. We then apply …xed… (More)

- References, K Ahrendt, +31 authors Tyre
- 2013

Laplace transforms for the nabla-difference operator and a fractional variation of parameters formula, Communications in Applied Math., accepted and to appear. Nonlinear diffusion models with peridynamic-type nonlocality, in progress. Steady state models for nonlocal heat conduction in peridynamics, in progress. Robust population management under… (More)

- Mackenzie, Awebro, +6 authors B Uzars
- 2002

Fisheries data (landings) in the Baltic Sea have been systematically recorded since the 1920s whereas the stock dynamics of most commercially important species (e.g., cod, herring) are available since only the 1960s or 1970s. In this paper we identify and describe potential archival sources of fisheries data that may be useful for investigating… (More)

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