A produção animal nos ecossistemas do semi-árido é influenciada pela variabilidade espacial e interanual da oferta quantitativa e qualitativa de recursos forrageiros. A dinâmica da acumulação de fitomassa para a maioria das diferentes espécies da caatinga é pouco conhecida, o…

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Presented at the PRHE (Pedagogical Research in Higher Education) Conference 16-17 June 2008., This paper highlights aspects of our experience as “exploratory practitioners” researching
the use and the value of two modes of assessment (web-based discourse and sketchbook
learning journals).…

Adaptive finite element methods (FEM) have been widely used in applications for over 20 years now. In practice, they converge starting from coarse grids, although no mathematical theory has been able to prove this assertion. Ensuring an error reduction rate…

A new computable a posteriori error estimator is introduced, which relies on the solution of small discrete problems on stars. It exhibits built-in flux equilibration and is equivalent to the energy error up to data oscillation without any saturation assumption.…

Data oscillation is intrinsic information missed by the averaging process associated with finite element methods (FEM) regardless of quadrature. Ensuring a reduction rate of data oscillation, together with an error reduction based on a posteriori error estimators, we construct a…

Kenya’s pursuit to be among the top tourism destinations globally require strategic focus as envisaged in Kenya’s Vision 2030 and the Constitution of Kenya 2010. Ecotourism supports environmental conservation as well as generating economic opportunities. It additionally emphasizes benefits to…

Many college students and their families are concerned about the high costs of textbooks. A company called Flat World Knowledge both gives away and sells open-source textbooks in a way it believes to be financially sustainable. This article reports on…

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