Dynamic road pricing and the value of time and reliability

High Occupancy Toll (HOT) lanes that use dynamic pricing to manage congestion and generate revenue are increasingly popular. In this paper, we estimate the behavioral response of drivers to dynamic pricing in an HOT lane. The challenge in estimation lies in the simultaneity of price and demand: the structure of dynamic tolling ensures that prices increase as more drivers enter the HOT lane. Prior research has found that higher prices in HOT lanes increase usage. We find that after controlling for simultaneity HOT drivers instead respond to tolls in a manner consistent with economic theory. The average response to a 10 percent increase in the toll is a 1.6 percent reduction in usage. Drivers primarily value travel reliability over time savings, although there is heterogeneity in the relative values of time and reliability based on time of day and destination to or from work. The results highlight the importance of both controlling for simultaneity when estimating demand for dynamically priced toll roads and treating HOT lanes with dynamic prices as a differentiated product with bundled attributes.     

Using foraminifera to distinguish between natural and cultural shell deposits in coastal eastern Australia

Foraminifera are single cell protozoa that are ubiquitous in marine environments. Although the hard casings, or tests, of foraminifera are routinely studied in the earth sciences, they have been little studied by archaeologists, despite their potential to contribute to understandings of coastal site formation processes and palaeoenvironments. In this study techniques and methods of foraminiferal analysis are developed and applied to the problem of distinguishing between natural and cultural marine shell deposits, using the Mort Creek Site Complex, central Queensland, Australia, as a case study. Results allow separation of natural and cultural deposits based on foraminiferal density. Natural deposits were found to have >1000 foraminifera per 100 g of sediment, while cultural deposits exhibited <50 foraminifera per 100 g of sediment. Results allow us to better understand site formation processes at the Mort Creek Site Complex and highlight the potential of foraminiferal analyses in the interpretation of terrestrial marine deposits.     

Towards a Multi-Agent-Based Modelling of Obsidian Exchange in the Neolithic Near East

This paper examines an alternative approach to previously proposed models of prehistoric exchange such as the law of monotonic decrement or the down-the-line exchange model developed by Renfrew (Proceedings of the Prehistoric Society 34: 319–331, 1968, Renfrew 1977) to explain the distribution of obsidian across the Near East during the Neolithic period. Renfrew’s down-the-line model, which results in a very regular and clustered network, does not permit the circulation of obsidian to regions of the Near East that are further than 300 km from the source zones, as is shown in the archaeological data available. Obsidian exchange is a complex system where multiple factors interact and evolve in time and space. We therefore explore Agent-Based Modelling (ABM) so as to get a better understanding of complex networks. ABM simulations of an exchange network where some agents (villages) are allowed to attain long-distance exchange partners through correlated random walks are carried out. These simulations show what variables (population density, degree of collaboration between villages…) are relevant for the transfer of obsidian over long distances. Moreover, they show that a type of small-world exchange network could explain the breadth of obsidian distribution (up to 800 km from source) during the Near Eastern Neolithic.     

Michael Oakeshott’s Theological Genealogy of Political Modernity

This essay attempts to provide a historical account of Michael Oakeshott’s famous distinction between civil and enterprise association. As such, it demonstrates that Oakeshott’s political skepticism and his concomitant view of civil association can in part be explained by his reliance on Augustinian theology. In a similar vein, Oakeshott’s linkage of enterprise association with the rationalism of Bacon must be considered in terms of Oakeshott’s understanding of Pelagianism and Gnosticism. Unsurprisingly, it will be demonstrated that despite Oakeshott’s disagreements with the political philosopher Eric Voegelin, he was very impressed by Voegelin’s work on the Gnostic origins of modernity. Consequently, a major claim of this essay is that Oakeshott’s speculative understanding of modern political thought constitutes a theological genealogy of political modernity in all but name.     

Archaeology in the Lettered City

The ‘lettered creole’ Carlos de Sigüenza y Góngora is widely seen as an antiquarian who collected textual materials associated with the indigenous past. But Sigüenza's historical interest exceeded both the textual and the indigenous. Following a popular insurrection in 1692, which left the viceroy's palace in ruins, Sigüenza was asked to present a proposal for segregating Mexico City into distinct Spanish and Indian zones. He framed his project not as an attempt to trace a new line but as the recuperation of an old one, ‘excavating’ the original plan laid out by Hernán Cortés. Drawing on recent work in the field of archaeology and proposing a revisionist history of Mexican archaeology, this essay reads Sigüenza's interventions in the wake of the uprising as articulating an ‘archaeology of the colonial present’ whose modalities include both digging and ‘walking in the city.’ This operation renders the Spanish city a colonial ruin to be curated by a creole administrative apparatus. For the first time, the Spanish present has become the colonial past.     

Iran and the emergence of information and communications technology: the evolution of revolution?

This study examines the emergence of information and communications technology (ICT) in facilitating political protest in the Middle East, with a focus on the Iranian experience. With the rise of ‘emancipating technology’ to mobilise popular support, many had hoped that the incumbent regime in Iran would be steered towards a more democratic and less authoritarian path. At the same time, the Iranian regime itself has shown an increasingly sophisticated technical nous, constructing a centralised censorship network and using available technology to proliferate propaganda and control and subdue cyber-protest. As such, ICT has acted as a complex dual-edged sword in both mutually supporting and suppressing political activism in modern-day Iran.     

Freethinkers,anarchists and Francisco Ferrer: the making of a transnational solidarity campaign

This article examines the transnational solidarity campaign for Francisco Ferrer, the Catalan anarchist and educator who was sentenced to death for his alleged involvement in Barcelona's ‘Tragic Week’ of 1909. The international scale of the protests against Ferrer's execution was much remarked upon by his contemporaries. While historians have examined both the nature of demonstrations in support of Ferrer and the way in which he was commemorated, they have mostly focused on specific national contexts. This article takes a different approach: it investigates the transnational dimensions of the campaign. It places the protests within the framework of the ‘culture wars’ surrounding church–state relations. These cleavages were inherently transnational, and the structures developed by the international freethought movement, for example, played a significant role in sustaining the Ferrer campaign. The article also draws attention to other factors that shaped the protests and transcended national categories: from widespread images of Spanish ‘despotism’ to the way in which a foreign case could be adopted for domestic political mobilisation.