A Medieval Pottery Kiln at Audlem,Cheshire

BUILDING ACCOUNTS for 1398–99 give detailed costs of the construction of a circular, brick, free-standing artillery tower. The artillery towers at Southampton and Canterbury were linked to existing wall circuits, and detached forts in France may be more comparable to the tower at Norwich.     

Own-child estimates of U.S. white fertility, 1886–99

Abstract

The collapse of empires is exceedingly difficult to understand. The author examined the distribution of imperial lifetimes using a data set that spans more than three millennia and found that it conforms to a memoryless exponential distribution in which the rate of collapse of an empire is independent of its age. Comparing this distribution to similar lifetime distributions of other complex systems—specifically, biological species and corporate firms—the author explores the reasons behind their lifetime distributions and how this approach can yield insights into empires.     

Newspaper Reporting on Climate Change,Green Energy and Carbon Reduction Strategies across Canada 1999–2009

Canada’s climate change strategy faces an uncertain future since the country’s withdrawal from the Kyoto Protocol in 2011, making domestic public debate and awareness critical in the search for effective mitigation policies. This article presents a spatio-temporal analysis of newspaper reporting across Canada on climate change and carbon reduction approaches, ranging from renewable energies (solar, wind, hydro power) to carbon management (e.g., carbon capture and storage [CCS]) and economic approaches (e.g., carbon trade, ecological fiscal reform). The findings of a news article keyword analysis show that the overall growth of the Canadian news coverage during this time period was significantly fragmented into isolated peaks of activity rather than continuous growth of the topic of climate change. Furthermore, the study finds a strong news emphasis on technology- and growth-oriented solutions as opposed to a comprehensive ecological modernization that would encourage a deeper structural discussion about Canada’s much-criticized carbon-intensive energy economy.     

Arms Racing in ‘Space’: Spatial Modelling of Military Spending around the World

This paper builds on previous research into determinants of military spending by examining global and local spatial effects. Other research has examined the effects of regional differences and neighbours' spending levels with standard econometric techniques. This paper uses spatial econometrics to gain a better understanding of the influence of location and distance on levels of defence spending. I find that a spatial lag specification provides much more robust evidence of arms racing and security dilemma dynamics than previous studies. These basic dynamics have been difficult to detect empirically without the context and nuance introduced by spatial modelling. The paper represents a first cut at the topic, but two specific findings emerge. First, globally there is positive spatial correlation (nearby states have similar levels of spending). This conforms to arms racing and security dilemma expectations. And, second, locally there is variation in the patterns of spatial clustering across broad international regions (e.g. Europe, Asia etc.). The second finding supports previous research suggesting important qualitative regional variation in patterns of defence spending and international conflict. The models also confirm the effects of political regime type and interstate war on defence spending, and are robust to the inclusion of a temporally lagged dependent variable.