SPATIAL COMPETITION À LA COURNOT: PRICE DISCRIMINATION BY QUANTITY-SETTING OLIGOPOLISTS*

In this paper, we consider oligopolistic competition in a spatial model when firms take care of goods' delivery and discriminate among consumers. Firms compete by setting quantity schedules independently over space. We show that under general conditions a Nash equilibrium in this game exists and is unique. In equilibrium, firms’ markets overlap, a feature which accords with intuition and empirical observations. Over the interval between two firms, the equilibrium spatial price schedule is quasi-concave (quasi-convex) when transport costs are concave (convex). With linear transport costs, the model predicts uniform delivered pricing. Uniform pricing could moreover be obtained by a combination of increasing returns to volume in transportation together with concavity of unit transport costs in distance.     

New Light on the Medieval Gough Map of Britain

Remarkably little is known about the earliest surviving separate-sheet medieval map of Britain that takes its name from its former owner, Richard Gough (1735–1809), and that has been variously dated to between 1300 and 1400, and later. It presents a sophisticated cartographical image at a time when detailed maps of individual regions were almost unknown in Europe, yet nothing is agreed about its possible origins, context (ecclesiastical or secular), or why and how it was compiled. In the belief that historical interpretation has to stem from an intimate knowledge of the map as artefact—the state of the parchment, nature of the inks, palaeography—as well as image, an informal study group of historians and scientists (the Gough Map Panel) was convened in 2012 to examine the map through high resolution digital reproduction, hyperspectral analysis, three-dimensional analysis and Raman pigment analysis. Although the study is still ongoing, much that is new has been discovered, notably about the way features were marked on the map, Gough’s application to the map of a damaging reagent to render place-names readable, and the extent to which the original map (now dated to c.1400), although never completed, was nonetheless reworked on two different occasions in the fifteenth century, effectively creating two further maps. These and other findings are summarized here to encourage the further study of the map’s features that is needed before it can be fully understood.     

Preservation assessment of Miocene–Pliocene tooth enamel from Tugen Hills (Kenyan Rift Valley) through FTIR,chemical and stable-isotope analyses

We investigated fossil tooth enamel of mammals and crocodiles from two Mio-Pliocene East-African formations (Lukeino and Mabaget Fms) using infrared spectroscopy and chemical and stable-isotope analyses. Infrared spectra indicate that the fossil enamel contains biological apatite (bioapatite), without significant secondary carbonate contaminations. Several empirical infrared indexes were used to analyze the crystal–chemical characteristics of enamel. Fossil enamel has less organic matter, water and structural carbonate of apatite than modern enamel with which it was compared. Fossil apatite has a better crystallinity than bioapatite. The calcium/phosphorus mass ratio and the fluorine content of fossil apatite show intermediate values between bioapatite and geological fluorapatite. The samples also display significant crystal-chemical variations, depending on the vertebrate group (mammals vs. reptiles) and the taphonomic context (Lukeino Fm vs. Mabaget Fm). In spite of these changes, no relationship was observed between the chemical contents (carbonate and fluorine) and the stable-isotope ratios of carbonate (δ¹³C and δ¹⁸O) in fossil enamel. Preservation of the palaeoenvironmental signals is strongly supported by the fact that the stable-isotope composition of the three investigated fossil mammalian taxa (deinotheres, equids and hippos) is consistent with their ecological features. For instance, typical C₃- and C₄-plant isotope compositions are reflected in the deinotheres and equids, respectively, and amphibious hippos display lower δ¹⁸O values than terrestrial herbivores, as expected.     

Ideas-Centred Explanations of the Rise of Neoliberalism: A Critique

This article critically examines the assumption that the spread of neoliberal policy programs of privatisation, deregulation and marketisation is explained principally by policymakers coming under the influence of fundamentalist neoliberal ideas and the think tanks through which they were proselytised. The article outlines the conditions that must be satisfied for this thesis of ideational causation to be considered plausible. By examining the relationship between neoliberal think tanks and the Howard Coalition government in Australia, the article offers indicative evidence against this dominant conceptual framework for understanding the rise of neoliberalism. It concludes that this narrative offers a poor guide to understanding actually existing neoliberalism.

本文批评了一种观点,该观点认为新自由主义的私有化、解除管制、市场化之类政策的推广缘于政策制定者受了原教旨新自由主义思想及思想库的影响。作者指出了这一思想因果关系若要成立须满足的条件。通过分析新自由主义思想库与霍华德政府的关系,本文反驳了这种有关新自由主义的流行观点,认为这种叙述无益于指导对真实存在的新自由主义的理解（Brenner and Theofore 2002）。     

The Rise and Fall of the Australian Greens: The 2002 Cunningham By-election and its Implications

This article examines the 2002 by-election in the Australian federal seat of Cunningham, in which the Australian Greens secured their first and only member of the House of Representatives. This case study of Greens voting suggests that the electoral support base of the Greens in Cunningham was consistent with what is known about the support base of the Greens elsewhere in Australia. At the same time, it makes the case that local factors were at least as important as national issues in explaining the high Greens vote in Cunningham. A suburb-by-suburb analysis of Greens voting in the 2002 by-election suggests that traditional markers of Greens voting, such as higher than average incomes and educational qualifications, were a necessary, but not a sufficient, explanation of Greens voting in the case of Cunningham.     

The Sail of the Swedish Merchantman Jeanne‐Élisabeth,Wrecked off Montpellier,France, in 1755

A folded sail was found stowed in the hold of the Swedish‐registered merchantman Jeanne‐Élisabeth, which ran aground off Montpellier in a storm in 1755. Surviving sails from any period are rare. The structure of the recovered portion of sail and its associated cordage is described and discussed in the context of differing traditions and technological evolutions of the period. Recovery, recording and initial conservation techniques are discussed in an appendix . © 2011 The Authors     

The Cables and Cablets of the Mary Rose (1545)

Henry VIII's warship Mary Rose sank in the Solent on 19 July 1545, during an engagement with a Franco/Papal invasion fleet. During excavation between 1979 and 1982, four cable coils and a number of lengths of cable and cablets were discovered. Direct study of these, combined with the excavation, finds, and conservation records, have established the number of cables found on the wreck, their spatial organization on the vessel, and their function at the time of the wrecking. Analysis of the cables has illuminated 16th‐century rope‐making techniques. The possible presence of Tudor salvage cables is also discussed.