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Nutrient surpluses on integrated arable farms
Abstract From 1990 to 1993 nutrient fluxes were monitored on 38 private arable farms that had adopted farming strategies aiming at reduced nutrient inputs and substitution of mineral fertilizers byExpand
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Multivariate time series analysis for design and operation of a biological wastewater treatment plant
In the area of biological wastewater treatment, the more common approach to dynamical modeling has been the use of mechanistic models with differential equations. This study illustrates thatExpand
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Lifelong learning in a Fourth World setting
This paper discusses the Fourth World NPO “Ons Huis” that reaches out to persons in poverty to help them regain a place in society through building selfesteem and acquiring necessary competencies, such as ICT skills, by means of informal lifelong learning. Expand
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