Capacity Design of Coupled RC Walls

Capacity design aims to ensure controlled ductile response of structures when subjected to earthquakes. This article investigates the performance of existing capacity design equations for reinforced concrete coupled walls and then proposes a new simplified capacity design method based on state-of-the-art knowledge. The new method is verified through a case study in which a set of 15 coupled walls are subject to nonlinear time-history analyses. The article includes examination of the maximum shear force in individual walls in relation to the total maximum shear force in the coupled wall system, and subsequently provides recommendations for design.     

Open-Air “Adena” Paired-Post Ritual Features in the Middle Ohio Valley: A New Interpretation

Circular paired-post structures have been recognized as a quintessential trait of the “Adena” concept. Although once thought restricted to ritual contexts beneath burial mounds, work over the last 30 years has identified several open-air structures in contexts apart from burial mounds or ditches. Uncluttered by overlapping features, open-air examples present a unique opportunity to document the initial roles played by these features. Currently, no unequivocal evidence for mortuary processing has been found directly associated with open-air paired-post structures. This fact calls into question the prevailing belief that most of these features were used to process, or prepare, the dead. Instead, a more reasonable interpretation is that these structures were involved in rituals minimally related to, or entirely devoid of, mortuary activity.     

On the Particularism of English Landscape Archaeology

The aim of this paper is to explore the question: why is the archaeology of English historic landscapes apparently so provincial? Inevitably the response must be that matters are more complex. In this paper, I examine the work of W. G. Hoskins, the “father of English landscape history,” and draw attention to: the complex way in which landscape is embedded in nationalism; the relations between locale, province, and nation; and the way wider tensions, in particular of colonialism are embedded within Hoskins's own discourse. In conclusion, I examine ways in which this problematic continues to structure enquiry into the English landscape today and to inhibit a genuinely international and comparative approach to historic landscapes.     

Holocene climatic change and past Irish societal response

The extent to which North Atlantic Holocene climatic perturbations influenced past human societies is an area of considerable uncertainty and fierce debate. Ireland is ideally placed to help resolve this issue, being occupied for over 9000 yr and located on the eastern Atlantic seaboard, a region dominated by westerly airflow. Irish bog and lake tree populations provide unambiguous evidence of major shifts in surface moisture through the Holocene similar to cycles recorded in the marine realm of the North Atlantic, indicating significant changes in the latitude and intensity of zonal atmospheric circulation across the region. To test for human response to these cycles we summed the probabilities of 465 radiocarbon ages obtained from Irish archaeological contexts and observe enhanced archaeological visibility during periods of sustained wet conditions. These results suggest either increasing density of human populations in key, often defensive locations, and/or the development of subsistence strategies to overcome changing conditions, the latter recently proposed as a significant factor in avoiding societal collapse. Regardless, we demonstrate environmental change is a significantly more important factor in influencing human activity in the landscape than has hitherto been acknowledged.     

A Minimum-Impact Method for Measuring Corrosion Rate of Steel-Hulled Shipwrecks in Seawater

Current research on USS Arizona is focused on a minimum-impact technique for calculating corrosion rate of the battleship's steel hull by analysing physical and chemical properties of marine encrustation covering the exposed hull. An equation is derived that allows concretion thickness, density, and total iron content to be used to calculate corrosion rate of steel hull plate.
© 2006 The Authors     

Volcanic politics: Executive–legislative relations in Britain, 1997–2005

The parliamentary decline thesis overstates the dominance of the executive. The relationship between the executive and legislature is actually far more complex and balanced than is commonly recognised. After exploring recent developments in Australia and New Zealand, this article draws upon an audit of parliamentary modernisation in Britain since the election of New Labour in 1997 and suggests that a reforming parliament occurred during 2001–05 in which an executive with a majority of 166 was forced to acquiesce in the introduction of a raft of reform measures in the House of Commons that were designed to shift the balance of power. At the same time, the ‘transitional’ House of Lords displayed a new-found zeal and activism in a way that further frustrated the executive's control of parliament. This is not to overstate the degree of change: party loyalty remains the primary glue in the executive–legislative relationship and the executive remains dominant. However, it does suggest that in the British context the executive must still work within the limits and constraints of the parliamentary framework.     

Farm women and femocracy

While rural and farm women have a long history of interaction with the Australian state, it is only recently that Commonwealth government departments have established specifically dedicated policy machinery to address their needs. What is notable is that this has occurred at a time when other gender equity infrastructure is being disbanded. This article examines this anomaly. To begin, it documents the material and discursive changes in terms of equity for women which have occurred since the election of the Howard government in 1996. Following this, it details the emergence of a state agenda for rural and farm women in Australia and explains some of the definitive elements of this agenda. In the final section, the article gives attention to explaining why equity for farm and rural women has been emphasised by government in a period marked by the erosion of state-sponsored equity initiatives.     

Dangerous Places and Wild Spaces: Creating Meaning with Materials and Space at Contemporary Maya Shrines on El Duende Mountain

Ethnoarchaeological observations at Maya shrines on a sacred mountain suggest that three potent material strategies imbue ritual practices with different social meanings: 1) the use of different types of materials as offerings in various rites, 2) the ways in which the physical conditions of an offering are altered during deposition, and 3) the choice of location where the offering is deposited within the site relative to a ceremonial focal point. Through these strategies, individuals creatively negotiate limited access to material resources and assign diverse meanings to the material culture, practices, and places of ritual. Materials that represent commoners' rituals may primarily consist of quotidian items that are transformed in meaning by how and where they are deposited into an archaeological context.