Non-invasive on-site method for thickness measurement of transparent ceramic glazes based on depth from focus

Glazed ceramics are a common material analyzed through geochemistry, whether in the form of tableware collected during excavations or tiles observed as part of architectural features. Within the framework of these studies, measuring the thickness of the transparent glaze is one of the useful variables available for the characterization of the ceramic, contributing to searches for provenance as well as serialization. However, this task often requires invasive methods performed in the laboratory, which may not always be possible. This paper develops a non-invasive and portable on-site system for measuring the thickness of ceramic glazes. Based on the depth from focus technique, this method makes use of a classical camera, a macroscopic lens, a translation stage, and a laptop for system control. In this article, we test this method through the measurement of glaze for ten samples as compared to results obtained for sections through scanning electron microscopy.     

The Abeng’s Call: The Articulation of Place and the International in Black Power Print Production

This article engages with radical Black Power print production in order to examine the articulation of Black practices of place-making and Black internationalist spatial politics. These spatial politics and practices are developed through engagement with the Jamaican Black Power newspaper Abeng which was produced at the height of Black Power activity on the island in 1969. The paper draws on Black Geographies scholarship to demonstrate that Abeng represented a material and discursive means through which subaltern practices and places of resistance in Jamaica were enacted in opposition to and excess of plantation spatialities and regimes on the island. The carving out of such subaltern places allowed for the articulation of transnational imaginaries and translocal solidarities with similarly aligned communities and struggles across the diasporic world. The Abeng newspaper was again central in crafting these imagined Black internationalist geographies and coeval praxes of transnational solidarity.     

Entitlement Failure?

In this article, the literature around the entitlement approach to famine is assessed against the background of recent developments in economics which are perceived to have increasingly encroached upon the previously neglected subject matter of the other social sciences. In this light, emphasis is given to the tension that exists in the entitlement approach between its micro-foundations and macro-consequences and causes. This, in turn, is related to the broader problem in social theory of the relations between structures and agency. Whilst it is found that the entitlement approach does embody an implicit causal content in the filtering of socioeconomic mechanisms through the distribution of individual entitlements, it is ultimately argued that the approach is primarily suited to investigative rather than causal analysis.     

Land in Kwara'ae and development in Solomon Islands

This paper documents land tenure and the effects of economic development in Kwara'ae on the island of Malaita. It uses local histories to confirm the essential flexibility of a system of cognatic inheritance, based on social and economic values which contradict the more exclusive unilineal emphasis preferred and promoted by government land and development policy in Solomon Islands. In considering the resulting problem of land disputes, the paper questions the value of reforms which undermine the tradition of communal control of natural resources.     

The Social and Economic Complexity of Ancient Jerusalem as Seen Through Choices in Lighting Oils

This paper presents and discusses the results of residue analysis conducted on 78 ceramic lamps found in archaeological excavations in ancient Jerusalem, in an attempt to identify the types of oils used and the reasons for their preferential choice. The oil lamps chosen for the study were taken from a variety of contexts, which represent the different periods during which Jerusalem was settled and the different sectors of the city. The results of the study show that even the most mundane activity of lighting using oil held within it social and economic choices, as mirrored in the different excavation areas.