The IJsselcog project: from excavation to 3D reconstruction

The 15th‐century IJsselcog was lifted in 2016 from the river IJssel near Kampen (the Netherlands). From stern to bow and from starboard to portside about 70% of the original wooden hull is preserved. The combined approach of analogue documentation and photogrammetry enabled the research team to reconstruct the original ship in 2D and 3D, followed by a comprehensive study of its nautical characteristics. The hull volume and height were maximized by the shipbuilders using previously unknown construction elements in cogs, such as wales and vertical riders; shipbuilding traits that are generally applied to 16th‐ and 17th‐century carvel‐built cargo ships.     

Public–Private Plan Development: Can Early Private Involvement Strengthen Infrastructure Planning?

Private parties, who are usually involved in later stages of design, construction and maintenance, can potentially strengthen the early plan-making stages of infrastructure planning. They can bring in knowledge, expertise and experience to help address complexity in planning. Such early private involvement can be accommodated through several models for which experiences in Dutch infrastructure planning practice differ. In this article, we assess the potential of early private involvement for strengthening infrastructure plan development by examining evaluative studies and conducting interviews with public and private actors involved in four early private involvement models in Dutch infrastructure planning: market consultation, early design contest, market reconnaissance and unsolicited proposal. We conclude that in order to unlock the potential of early private involvement government needs to incorporate incentives for creativity, reward private involvement and strike a balance in the setup of the investigated models between conceptual freedom for private solutions and transparent public guidance in preconditions and regulations. Early private involvement could, thus, provide opportunities for conceptual creativity and innovation and opportunities for public–private collaboration, which can strengthen plan development.     

RETURNS TO COLLEGE MAJORS ACROSS LARGE METROPOLITAN AREAS

In this paper, we provide new evidence that earnings for various college majors differ across large metropolitan areas in the United States. We then set out to explain, at least in part, why these differences exist. We find that the intrinsic elements of geographic areas, such as common agglomeration effects and spatial differences in demand, are an important explanation for all majors. Further, we find that the endogenous sorting of individuals plays less of a role, particularly for domestic‐born college graduates. The sorting of lower‐paid, foreign‐born college graduates, however, increases the estimated dispersion in returns across geographic areas.     

The role of negotiated developer obligations in financing large public infrastructure after the economic crisis in the Netherlands

The economic crisis that started in 2009 has negatively impacted in the Netherlands the available financial resources for urban development. Dutch municipalities struggle since then with falling local financial sources, especially since active public land policy, traditionally an important additional financial source, became not so profitable anymore. One supposed effect is the limited degree to which municipalities can nowadays finance public infrastructure that serves wider areas, thus more than one specific development site (i.e. ‘large’ public infrastructure). Until now, however, there are no data available that support this claim. In this paper, we explore this and the role that developer obligations can play as an alternative, compensating financial source. Developer obligations are in many countries a growing popular public value capturing instrument, but in the Netherlands, a relative new phenomenon. On the basis of surveys, interviews and policy analysis, we conclude that at least a quarter of Dutch municipalities use developer obligations to obtain financial sources for large infrastructure. This seems, however, so far not to compensate for the diminishing of other municipal financial sources. The paper ends with some speculation about the future evolvement of developer obligations in the Netherlands.     

Egyptian sculptures from Imperial Rome. Non-destructive characterization of granitoid statues through macroscopic methodologies and in situ XRF analysis

Aegyptiaca-like Domitian’s obelisk is now decorating Bernini’s fountain on Piazza Navona or the Egyptian lions flanking Michelangelo’s stairs towards the Capitol figure prominently amidst Rome’s cultural heritage. Motivations for the import, contextualization, and copying of these objects during the Imperial Roman period are as heavily debated as they are ill understood. Provenance determination plays an important role in these discussions in terms of a (supposed) dichotomy between Egyptian (real) versus egyptianising (copy) but has only been applied stylistically and never been tested analytically. A scientific characterization of the materials themselves is even lacking altogether, as is an investigation into the cultural and symbolic meaning of the materials used. This paper is a first attempt to address these important lacunae on the basis of an explorative study of a selected sample of Egyptian statues from Rome. The identification and provenance attribution of the materials used for these statues are often problematic due to their relatively fine-grained nature and dark color. Therefore, a full non-destructive analysis of Egyptian statues in dark-colored rocks is presented in this study, with the stones evaluated by macroscopic examination and handheld X-ray fluorescence (XRF) analysis. The implemented methodology has allowed a distinction between greywacke and several varieties of granitoid rocks. In order to evaluate the potential for source attribution, a comparison was made between the results of our analyses and geochemical data for several granitoid rocks from Egypt. This has suggested Aswan as most likely source. The results presented here indicate that handheld XRF analysis can be used for the assessment of compositional variability in and potentially for the provenance of granitoid rocks, provided that a fine-grained area of the material can be measured on multiple locations, and if these values can be assessed on (in)consistencies with other published reference materials.