A benthic index of biotic integrity was developed for use in estuaries of the southeastern USA (Cape Henry, VA; St. Lucie Inlet, FL) using a modi®cation of the method developed by Weisberg et al. (1997. An estuarine benthic index of biotic integrity (B-IBI) for Chesapeake Bay. Estuaries, 20 (1), 149±158). Data from non-degraded stations sampled in 1993 and 1994 were analyzed using classi®cation...

We developed a self-consistent screened-Korringa± Kohn± Rostoker (KKR) method in an ab initio tight-binding formulation. The reduction in numerical e€ ort in comparison with that required for the standard KKR method is achieved by the choice of a suitable reference system. Following the idea of Zeller et al. (1995, Phys. Rev. B, 52, 8807), reference systems with repulsive mu n-tin potentials o...

Spin-dependent scattering is considered to be the origin of giant magnetoresistance in magnetic multilayers, although the role of bulk or interface defects is still under discussion. We present calculations of spin-dependent impurity scattering potentials as a function of the impurity position in a Co/Cu-multilayer. The calculations are performed within spin density functional theory using a Gr...

During the first half of the nineteenth century London grew at a phenomenal rate. It nearly trebled its population, and the built-up area spread so far that in Engels's words, writing of the mid-1840s, `a man may wander for hours together without reaching the beginning of the end, without meeting the slightest hint which could lead to the inference that there is open country within reach.' Yet ...

Despite evidence from the USA that children in small classes of less than 20 do better academically there is still a vociferous debate about the effects of class size differences in schools, and considerable gaps in our understanding of the effects of class size differences. This article summarises results from the most complete UK analysis to date of the educational consequences of class size ...

In the Middle Ages superbly crafted and precious artworks were used to glorify God as well as to attract more money through gifts and donations to institutions like monasteries and cathedrals. Wealthy individuals like kings, lords and bishops also amassed art objects in order to display their power. But it is only with Jean, Duc de Berry (1340±1416) that we can see the frenzy of accumulation, a...

We show how the growth of a dynamical correlation length and its associated susceptibility recently observed by the present authors and co-workers as T, is approached can be understood in an appropriate theoretical framework. We discuss some predictions for these quantities in the region below T, which have not yet been explored in numerical simulations. One of the most striking features of the...