MEASURING CHRONOLOGICAL UNCERTAINTY IN INTENSIVE SURVEY FINDS: A CASE STUDY FROM ANTIKYTHERA,GREECE*

This paper considers how to make the most out of the rather imprecise chronological knowledge that we often have about the past. We focus here on the relative dating of artefacts during archaeological fieldwork, with particular emphasis on new ways to express and analyse chronological uncertainty. A probabilistic method for assigning artefacts to particular chronological periods is advocated and implemented for a large pottery data set from an intensive survey of the Greek island of Antikythera. We also highlight several statistical methods for exploring how uncertainty is shared amongst different periods in this data set and how these observed associations can prompt more sensitive interpretations of landscape‐scale patterns. The concluding discussion re‐emphasizes why these issues are relevant to wider methodological debates in archaeological field practice.     

CASTING THE RIACE BRONZES (2): A SCULPTOR's DISCOVERY

Summary.   The discovery presented in this paper may reshape the stylistic history of Greek art. It is that the torso and limbs of the Riace Bronzes were cast from life, rather than having been previously modelled in clay.     

PERFORMANCE-BASED SEISMIC RESPONSE OF FRAME STRUCTURES INCLUDING RESIDUAL DEFORMATIONS. PART II: MULTI-DEGREE OF FREEDOM SYSTEMS

The role of residual deformations when evaluating the performance of multi-storey frame structures subjected to ground motion is investigated in this paper. The limitations of damage indices available in the literature, either based on ductility, energy dissipation or a combination of both, in capturing such a significant aspect of the seismic response of frame structures are discussed. The concept of residual deformations as a critical complementary indicator to cumulative damage, introduced in a companion paper (Part I) for single-degree-of-freedom (SDOF) systems, is herein extended to multi-degree-of-freedom (MDOF) frame systems. The seismic performance of multi-storey frame structures, either representative of new designed or existing structures, is investigated, focusing on the response in terms of residual deformations. Residual deformations are shown to be sensitive to the hysteretic rule adopted, to the system inelastic mechanism as well as to the seismic intensity. The influence of higher modes and P-Δ effects on the final residual deformations is addressed. A combination of maximum drift and residual drift in the format of a performance matrix is used to define the system's global performance levels and is then extended to a framework for an alternative performance-based seismic design and assessment approach.     

SENSOR DEVELOPMENT USING BERKELEY MOTE PLATFORM

Industrialised nations have dedicated significant investments toward the development of civil infrastructure. To preserve this investment, attention must be given to proper maintenance. Structural Health Monitoring (SHM) has emerged as a tool to support this task. Networks of smart sensors, built upon wireless communication, have the potential to significantly improve SHM. Numerous platforms for smart sensors have been developed, most of which utilise proprietary hardware/software. The Berkeley Mote, utilised in this study, was the first open hardware/software platform to be developed. However, the Berkeley Mote was designed for generic applications and therefore the available sensors are not optimised for use in civil infrastructure applications. Acceleration and strain are among the most important physical quantities to judge the health of a structure. Although commercially available sensor boards have accelerometers, their applicability towards civil infrastructure is limited. This paper presents the development of new acceleration and strain sensor boards based on the Berkely-Mote platform and provides experimental verification of their performance within civil infrastructure applications.     

The invasion of Iraq: what are the morals of the story?

It is uncontroversial that the invasion and occupation of Iraq involved the following errors: the misinterpretation of intelligence; the underestimation of the number of troops requisite for law and order; the disbanding of the Iraqi army; and indiscriminate debaathification of the civil service. The first error was one of imagination rather than virtue; the others were caused by ‘callousness”, impatience, and consequent imprudence. These vices were partly responsible for massive civilian casualties, which many wrongly assume to teach the fundamentally erroneous character of the invasion. Nonetheless, we should beware such moral flaws in tomorrow's policy‐makers and renounce the managerial mentality that fosters them. Another lesson is that, in so far as nation‐rebuilding requires substantial and long‐term commitments, it must command the support of the nation‐builder's domestic electorate; and to do that, it must be able to justify itself in terms of the national interest. From this we should not infer the further lesson that morality's reach into foreign policy is limited, since, according to Thomist ethics, the pursuit of the national interest can itself be moral. Finally, one lesson that we should not learn from Iraq is never again to violate the letter of international law and intervene militarily in a sovereign state without Security Council authorization. The law's authority can be undermined as much by the UN's failure to enforce it, as by states taking it into their own hands. It is seriously problematic that the current international legal system denies the right of individual states to use military force unilaterally except in self‐defence, while reserving the enforcement of international law to a body, whose capacity to act is hamstrung by the right of veto. Given this situation, military intervention without Security Council authorization could be morally justified on certain conditions.     

Language,history and the nation: an historical approach to evaluating language and cultural claims

ABSTRACT. In contrast to the abstract commitment to individual rights found in liberal critics of Bill 101 and the equally ahistorical approach of multicultural theorists like Bhikhu Parekh, this paper proposes that the particular historical circumstances surrounding the current minority status of different groups is crucial in evaluating the legitimacy of one cultural group to promote its cultural needs over another group within existing states. When the culture of a group residing within a particular state is secure in a neighbouring jurisdiction, the issue at stake is not necessarily the survival of a unique culture but the cultural needs of particular individuals. It does not follow that they have no legitimate claims against the state. However, in examining the language policies in Quebec and the newly independent Baltic states, it is argued that they are different in kind to the rights due to long‐standing communities struggling for linguistic survival.