NEUTRON TOMOGRAPHIC ASSESSMENT OF INCISIONS ON PREHISTORIC STONE SLABS: A CASE STUDY FROM WONDERWERK CAVE,SOUTH AFRICA*

This study presents the application of neutron tomography to the analysis of ironstone slabs found in a late Earlier Stone Age context (Fauresmith industry) at the back of Wonderwerk Cave, Northern Cape Province, South Africa. These slabs have markings on the surface that might be anthropogenic, and thus significant to understanding the emergence of human symbolic behaviour. Neutron tomography proved to be an effective tool for distinguishing surface incisions from lines that are the expression of internal fissures in the rock.     

MODELLING OF STRUCTURAL ACCELERATIONS AND APPLICATION TO CONTROLLER DESIGN

In this paper a method for the identification of simplified linear models for building structures is applied to the case when acceleration, rather than displacement, is measured. A frame from benchmark structural controller studies is simulated, and from the input-output data of these simulations, simplified models for the acceleration response of the frame are obtained that have far fewer degrees of freedom. One of these simplified models is used to design a controller, which is tested using an evaluation model from the benchmark controller studies and found to be effective.     

President Jefferson's Three Appointments to the Supreme Court of the United States: 1804, 1807, and 1807

In endeavoring to set the stage for an examination and analysis of Mr. Jefferson's three appointments to the Supreme Court of the United States, a summary glance into those of his two predecessors, George Washington and John Adams, both Federalists, is apposite.     

New Reflections on Old Questions in the Anthropology of Gender

The ethnographic exploration of sex and gender continues to yield important results. We have some new cases—and new insights into old cases—to consider, with the help of the critical and cautionary insights of the last three decades. This article argues for a systematic reexamination of questions about gender stratification that were raised in an earlier sub-disciplinary era in light of new ethnographic and theoretical work. In doing so, it may pay to return to once popular analytical methods like cross-cultural comparison aimed at generalization. Three recent ethnographies about gender in Southeast Asia point toward possibilities for future synthesis.