Difficillima et Ardua: theory and practice in treatises on the abacus, 950–1150

The abacus is often regarded as a comparatively simple instrument of calculation. Yet the scholars of the tenth to twelfth centuries who wrote the practical manuals on the use of the abacus often went to some lengths to relate their teaching to the work of their contemporaries in the other artes, and to provide theoretical explanations for the principles involved. They sought to elevate the study of the abacus to the status enjoyed by the other arts. This paper attempts to examine the range of their treatment and the limitations imposed on their efforts by their subject-matter.     

Staying on Top: Why is Munich so Resilient and Successful?

This article seeks to explain why Munich, Germany's most economically successful city in recent decades, has proved so resilient despite various challenges and shocks. It begins by discussing different theoretical understandings of resilience and our methodological approach which builds on complex adaptive systems and evolutionary economic geography perspectives. Using a blend of historical analysis and in-depth investigation of the dynamics of one of the city's most innovative clusters, we argue that Munich's resilience essentially stems from the complex interplay of Germany's distinctive political history and federal system, which has promoted multi-level governance and a strong urban system, longstanding city regional leadership and entrepreneurialism, Munich's inherent assets and diverse economy and the combined strength of its many knowledge institutions, innovation system and networks. The evidence suggests that historic, structural and locational factors and agglomeration effects largely explain Munich's rise to prominence but that sustained urban and regional leadership and effective governance and policy especially in the technological, scientific and educational spheres coupled with intelligent urban planning have played an increasingly important role in sustaining its competitiveness.     

The Challenges and Potentials of Archaeological Heritage in Africa—Cape Verdean Reflections

This paper considers three different ways that heritage can be considered fragile—as a reference to the conservation status of the physical heritage, as a concern for the meaning of the heritage, and in terms of threats to the knowledge potentials. It also briefly considers any special conditions that may characterise the threats to heritage in Africa and the consequential challenges to its heritage managers and politicians. On this basis, the experiences of working on one of the first systematic archaeological projects in Cape Verde are used to think about how these challenges are encountered within a specific place but from the viewpoint of foreigners and archaeologists.     

Defining Jamaica Sloops: A Preliminary Model for Identifying an Abstract Concept

Jamaica sloops were vernacular watercraft designed, built, and utilized by Caribbean colonists beginning in the late-17th century. Despite their popularity, no design or construction records or even a specific definition of their form survive, and many sources simply describe them as an early version of the Bermuda sloop. Vernacular Jamaica sloops were a unique adaptation by English colonists to combat the effects of piracy, and their design was specific to the economic, geographic, and political circumstances of colonial Jamaica. This article proposes a set of characteristics that can be used to define vernacular Jamaica sloops, firstly to distinguish them from the eighteenth-century naval Jamaica-class sloops but also to better understand them as a social response to external stimuli within the complex relationship between maritime economy, piracy and colonial control executed through the navy.     

The emergence of an ethic of care in rural Kenyan schools? Perspectives of teachers and orphaned and vulnerable pupils

In the context of HIV, there is considerable debate about the role of schools and teachers as potential sources of care and support for vulnerable children. This qualitative research examines ‘care’ as experienced and practiced by pupils and teachers in rural Western Kenya. In primary and secondary schools, interviews were conducted with 18 teachers and 57 orphaned and vulnerable pupils, alongside Photovoice. Drawing on thematic analysis and an ‘ethic of care’ theoretical perspective, we unpack the informal caring practices of teachers within resource-constrained settings. The research provides glimpses of schools as spaces of care, participation and support for orphaned and vulnerable pupils. Recognising and providing institutional support for the development of an ethic of care in schools may help to tackle the considerable educational barriers facing girls and boys who are orphaned and vulnerable and move ‘care’ closer towards the centre of educational policy and practice in the global South.     

Contribution of strontium to the human diet from querns and millstones: an experiment in digestive strontium isotope uptake

The question of whether rock grit ingested unintentionally from querns, metates or millstones, or deliberately through pica or geophagy, is bioaccessible in the human gut has not been addressed in archaeological strontium (Sr) isotope studies. This study employed the unified bioaccessibility method and determined that ingested rock grit can provide bioaccessible ⁸⁷Sr/⁸⁶Sr, but that unintentional consumption is unlikely to constitute > 1% of the diet (by mass) and will not significantly change, that is, by > 0.001, human skeletal ⁸⁷Sr/⁸⁶Sr. The use of locally or non‐locally sourced querns or millstones will not affect the interpretation of archaeological human ⁸⁷Sr/⁸⁶Sr values in Britain.