3D heritage visualisation and the negotiation of authenticity: the ACCORD project*

This article examines the question of authenticity in relation to 3D visualisation of historic objects and monuments. Much of the literature locates their authenticity in the accuracy of the data and/or the realism of the resulting models. Yet critics argue that 3D visualisations undermine the experience of authenticity, disrupting people’s access to the materiality, biography and aura of their historic counterparts. The ACCORD project takes questions of authenticity and 3D visualisation into a new arena – that of community heritage practice – and uses rapid ethnographic methods to examine whether and how such visualisations acquire authenticity. The results demonstrate that subtle forms of migration and borrowing occur between the original and the digital, creating new forms of authenticity associated with the digital object. Likewise, the creation of digital models mediates the authenticity and status of their original counterparts through the networks of relations in which they are embedded. The current pre-occupation with the binary question of whether 3D digital models are authentic or not obscures the wider work that such objects do in respect to the cultural politics of ownership, attachment, place-making and regeneration. The article both advances theoretical debates and has important implications for heritage visualisation practice.     

A Geometric Morphometric Study of Regional Craniofacial Variation in Mexico

Spanish speaking populations in the USA have long been categorised under the umbrella term ‘Hispanic’, which is a cultural construct. The term Hispanic ignores the unique ethnohistories and biological variation among Hispanic groups with various European, African and indigenous American influences. Considerable heterogeneity has been identified in pre‐contact America and has continued to influence the cultural and biological compositions of various regions today. The purpose of this research is to examine biological variation in Mexico, which was influenced by indigenous migration patterns and the Old World conquests of the Americans. Using multivariate statistics, this paper compares 16 three‐dimensional craniometric landmarks of samples from northern Central Mexico, northern Yucatan and western Mexico to examine the regional biological variation present in Mexico in both prehistoric and historic groups and also compares Mexican, Spanish and African American groups to examine patterns of Old World conquests. Multivariate statistics detected significant group differences for both size and shape (centroid size, p < 0.0001; shape, p < 0.0001) and showed that while significantly different, all the Mexican groups are more similar to one another except for one prehistoric inland‐western Mexican group, which is morphologically distinct from the other Mexican groups. Previous mtDNA research in these areas shows a low prevalence of African American admixture and a high indigenous component in the northern Mexican groups, which is consistent with the findings of this paper. The prehistoric and historic Mexican groups were the most similar indicating the retention of indigenous admixture after contact. The results from this analysis demonstrate that all groups are significantly different from one another supporting other findings that have shown that the indigenous populations of the New World are heterogeneous and that this variation may also contribute to the heterogeneity of contemporary populations. Copyright © 2013 John Wiley & Sons, Ltd.     

Environmental Public Voluntary Programs Reconsidered

Environmental “public voluntary programs” (PVPs) involve government offers of positive publicity and technical assistance to firms that reach certain environmental goals. A growing body of empirical work suggests these programs generally have little impact on the behavior of their participants. A natural policy conclusion would be to eliminate PVPs, but we argue that such a conclusion is premature. Many PVPs are best viewed as information diffusion programs, so identifying their effects econometrically is difficult because information is likely to diffuse to nonparticipants. Thus, after the early phases of even a successful PVP, it may well be impossible to detect a difference in the performance between participants and nonparticipants. We argue that new estimation approaches are needed to identify the effects of PVPs. We also explore the design of PVPs in detail, showing how PVPs can potentially enhance the diffusion of cost‐effective techniques for pollution abatement.     

Place mapping with teenagers: locating their territories and documenting their experience of the public realm

The purpose of this paper is to present, analyse and critique a research method, ‘place mapping’, used to document and understand teenagers' experience, use and perception of public spaces. Researchers in two case study sites, Edinburgh, Scotland, and Sacramento, CA, employed conventional street maps as a basis for eliciting and recording young people's spatial experiences. This method offers an effective mechanism for generating and structuring discussion – through dialogue – by the participants about their dynamic and shared experience of place, geographically recording places and ensuring equitable participation.