Thirteen Ways Of Looking At America

New ways of looking at experimental phasing.

In the original work by Blow and Crick, experimental phasing was formulated as a least-squares problem. For good data on good derivatives this approach works reasonably well, but we now attempt to extract more information from poorer data than in the past. As in many other crystallographic problems, the assumptions underlying the use of least squares for phasing are not satisfied, particularly ...

Twenty Ways of Looking at a Centrosome

Any serious understanding of how centrosomes work will depend on having a complete parts list and knowledge of how the parts fit together. One of the big suc-The Centrosome in Cell Replication cesses for assembling this parts list was the identifica-and Early Development tion of ␥-tubulin and the realization of its key role in Edited by R.E. Palazzo and G.P. Schatten microtubule nucleation. ␥-t...

Thirteen Ways to Look at the Correlation Coefficient

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Thirteen Ways to Estimate Global Error

In recent years there have been a number of surveys and comparison of techniques for estimating global discretization error in numerical solutions of differential equations [25, 29, 35, 36, 37, 39]. These have been an important stimulus to research in this area. In this paper we attempt to give an updated, organized, comprehensive survey of global error estimation techniques. For most of these ...

Two Ways Of Looking At A Newtonian Supertask