Rotating disks with nonzero radial pressure and finite radius are studied. The models are based in the Taub-NUT metric and constructed using the well-known “displace, cut and reflect” method. We find that the disks are made of perfect fluids with constant energy density and pressure. The energy density is negative, but the effective Newotnian density is possitive as the strong energy condition ...

The coconut mite, Aceria guerreronis Keifer, has emerged as a common menace to most of the coconut plantations in India. After its first upsurge in Kerala at the end of the 1990 ́s, the mite has spread to many states in southern and northern India, causing considerable damage. Coconut provides one third of the agricultural income in the regions in which it is grown and more than 10 million peopl...

ALE and Taub-NUT (or ALF) hyper-Kahler four-manifolds can be naturally constructed as hyper-Kahler quotients. In the ALE case, this construction has long been understood in terms of D-branes; here we give a D-brane derivation in the Taub-NUT case. Likewise, instantons on ALE spaces and on Taub-NUT spaces have ADHM-like constructions related to hyper-Kahler quotients. Here we refine the analysis...

I present NUT, a tool for understanding the nutritional content of what we eat. The project consists of a rapid prototyping and analysis phase, as well as a design study documenting the development of the NUT prototype. The goal of NUT is to support users in making healthy choices about what to eat by visualizing nutritional information in the context of the whole food. This report outlines the...

Uganda suffers from a high rate of child mortality which has improved little if at all in the last twenty years. The paper uses data from the 1992 Integrated Household Survey to model the determinants of child mortality and malnutrition. Parental beliefs about health have a strong and very highly significant influence on child mortality. Education and income also play a role, partly coming thro...

This paper discusses a speciic feature of structural synthesis of programs. Using regular data structures enables to optimize the method of structural synthesis of programs for several particular cases. The method for program construction described here is implemented in the NUT programming system.