The experimental results of diffraction efficiency as a function of the geometrical disposition of recording beams in bleached silver halide transmission thick-holographic gratings are presented. Two variables have been used to relate these results with certain geometric parameters. These variables…

A continuum model describing the steady-state actin dynamics of the cytoskeleton of living cells Has been
developed to aid in the interpretation of photoactivated fluorescence experiments. In a simplified cell geometry, the model
assumes uniform concentrations of cytosolic and cytoskeletal…

The present paper aims to determine the level of implementation of innovations in Spanish local government as well as to identify which types of innovations are most common. The paper also considers the link between innovative behavior and organizational size.…

Descripción completa.

Descripción completa.

chaîne opératoire, lithics, use-wear analysis, Southeast Asia, Philippines, Palaeolithic

This paper provides an overview of the analysis of obsidian
use and distribution within Melanesia by firstly,
reviewing the source areas including the history of
obsidian chemical characterisation, and secondly, by
looking at 20,000 years of obsidian use and its…

Roger Curtis Green 1932 – 2009. BA, BSc (New Mexico),
PhD (Harvard), ONZM, FRSNZ, member Nat.
Acad. Sci.(USA), Hon. Fellow Soc. Antiquaries (Lon.)
and Emeritus Professor of Prehistory at the University of
Auckland.

Cambodia, Neolithic, Metal Age, polished stone tools, manufacturing

Six flaked lithic assemblages from Tabon, Guri and
Duyong caves on Palawan and from Musang and
Laurente caves in the Cagayan valley on Luzon (Philippines),
discovered during the 1970s and 1980s, have been
reanalyzed. The results are presented here.