3D modelling of magnetic data from an archaeological site in north-western Tlaxcala state,Mexico

In Archaeology, geophysical methods had been applied usually in a qualitative form, limited only to the use of filters that enhance the data display. The main objective in this work is the implementation of a modelling technique that allows us to reconstruct the geometry of buried bodies and the determination of their depths. This is done by means of the estimation of the magnetic moments of archaeological objects using a three-dimensional mesh of individual magnetic dipoles using the least squares method and the singular value decomposition of a weighted matrix to solve the linear problem. The distribution and shape of the underlying archaeological remains can be inferred. This methodology was applied to an archaeological site called Los Teteles de Ocotitla, in the state of Tlaxcala, Mexico. A high-resolution magnetic prospection was carried out in three selected areas (terraces). The most important total field anomalies found on each area were inverted, obtaining results that were corroborated by archaeological excavations. This investigation demonstrates the potential of quantitative geophysical methods for the characterization of archaeological structures, in extension and in depth.     

CELL-CORRECTED RAS METHOD (CRAS) FOR UPDATING OR REGIONALIZING AN INPUT–OUTPUT MATRIX

ABSTRACT.  The RAS method is used to update or regionalize a single matrix such that it conforms to new row and column totals. This paper presents a correction of the RAS method (CRAS) that uses cell variation distributions calculated from multiple matrices of different periods or different regions. After the solution of the regular RAS, an additional optimization problem is solved that produces the most likely cell-corrections to the regular RAS solution. To test the behavior of CRAS, several simulations with a time series of input–output tables for The Netherlands for 1968–1986 are made. They show that—in situations of structural change—applying CRAS improves the regular RAS estimate. The method will also be applicable to traffic, trade, and migration matrices.     

Modeling and Seismic Response Analysis of RC Precast Italian Code-Conforming Buildings

ABSTRACT

In this study, industrial single-story RC precast buildings are investigated. Twenty-four case studies have been considered, in which the column height, the beam spans and the seismic hazard level are varied. The seismic design of the selected case studies is performed according to the Italian building code and additional technical documentation. Three-dimensional nonlinear models are defined to perform static and dynamic analyses for the seismic assessment of the selected case studies. Demand/capacity ratios in terms of the selected engineering demand parameters are computed for ten increasing values of the seismic input return period.     

Bearing capacity assessment of a 14th century arch bridge in Lecco (Italy)

The article presents the results of an experimental and numerical investigation on Azzone Visconti bridge, a 14th century arch bridge in Lecco (northern Italy). Starting from the historical data and from an extensive mechanical characterization of both the soil constituting the riverbed and of the masonry constituting the piers, the aim of the study is to investigate the bearing capacity of the bridge. A testing loading scheme defined according to the current Italian Code is adopted to check the structural behavior. A simplified finite element structural model was conceived and calibrated as a control tool to safely perform the experimental tests. Post-test nonlinear finite element analyses have allowed the prediction of the bridge bearing capacity and the definition of the bridge class according to the Italian regulations.     

Metals,microanalysis and meaning: a study of metal objects excavated from the indigenous cemetery of El Chorro de Maíta,Cuba

This is the first publication reporting systematic analytical research conducted on archaeological metals from Cuba. The main focus of the study consists of beads and small metal objects excavated at the cemetery of El Chorro de Maíta, which comprises some of the richest funerary deposits so far recovered on the island. Some comparative samples from the nearby site of Alcalá were also investigated, with an emphasis made on the manufacture, composition and origins of the different alloys. The resulting picture is that members of the social elite of the indigenous Taíno peoples were buried with beads made of placer gold exploited locally, gold–copper–silver pendants brought from continental South America and, above all, brass lacetags from European clothing that were perceived as sacred metals. The archaeometallurgical approach offers fresh insight into the relationships between Europeans and Taínos, and the impact of colonization on the indigenous customs, values and social structures.     

From Methodology to Ontology: Interdisciplinarity as a Principle of Constitution of Objectivity—Reflections from the Study of American Philosophy

Summary

The idea of interdisciplinarity can be articulated in different ways. The aim of the article is to criticise the view that interdisciplinarity is to be treated as a quality of the historian's approach to his subject-matter, and to argue for a constructivist interpretation of that notion. A constructivist account of interdisciplinarity relies on the thesis that the latter is one of the manifold ways in which it is possible to give sense to the historical records of which the historian wants to gain knowledge. In the paper it is maintained that the function of the notion of interdisciplinarity is to account for the clash of languages that can be found when disciplines converge. This new paradigm is highlighted by taking into consideration the history of American pragmatism.     

Minimal State Theories and Democracy in Europe: From the 1880s to Hayek

Summary

This article deals with laissez faire arguments as distinguishable in Europe between the final decades of the nineteenth century and 1914. The focus is on Herbert Spencer and the British ‘Individualists’, the Italian Vilfredo Pareto, and the Frenchman Paul Leroy-Beaulieu. Analysis concentrates on the relationship between laissez faire formulations and democracy, the latter amounting to the impact of the extension of the franchise on representative government. All the mentioned authors blamed the mechanisms of democratic government for the contemporary growth in state functions. While Spencer focused on the threat of a new class legislation after the demise of aristocratic power, Pareto and Leroy-Beaulieu viewed the pressure of lobbies and parties as the chief cause of the extension of state interventions. This article also aims to detect similarities and differences with more recent formulations. It is argued that Friedrich Hayek's achievement was to reconcile, against earlier perspectives, laissez faire with democracy. The reconciliation rested on a conceptualisation of democracy as a valuable method or procedure, onto which no values should be grafted.     

The Impact of a Customs Union with the European Union on Internal Migration in Turkey

Abstract The impact of the recent Customs Union (CU) agreement between Turkey and the European Union on internal migration is studied using an intra‐industry trade Computable General Equilibrium (CGE) model with intersectoral capital mobility under two alternative specifications for the labor market: the traditional Harris‐Todaro approach and the existence of a “wage curve” in the urban sector. Under both specifications, the numerical results show that the CU is welfare enhancing and causes a reduction of the urban‐rural wage gap as suggested by theoretical studies. At the same time, it leads to rural‐to‐urban migration and raises the capital rent, results that are counter intuitive with respect to the dual economy literature. Furthermore, the rise in formal labor demand and the migration response to the CU have not resulted in an increase in urban unemployment (i.e. the “Todaro paradox”), but rather to a fall in the unemployment pool. The study also shows that the Bhagwati‐Srinivasan proposal of maximizing welfare by uniformly subsidizing the entire labor market is impracticable, especially if the high wage union sector can negotiate employment conditions.     

Noah’s Grandson and St. James: Rewriting the Past in Eighteenth-Century Spain

ABSTRACT

In the late seventeenth century, when Spain gradually emerged from the general crisis that had afflicted the country, several members of the cultural elite became acquainted with the new sophisticated theories and methods of modern science. This newly acquired knowledge inspired these novatores (innovators) to examine Spain’s history and historiography. They intended in the first place to integrate and align Spain with European culture at large, since the religious and ideological obstacles of the past were supposedly no longer in force. Their second purpose was to establish a scientifically based historical discourse focused on the genuine achievements of Spain over the centuries and its contribution to European civilization. They were thus willing to confront the long-standing distortions arising from propaganda, either from the outside—such as the “black legend” forged by the enemies of Spain—or from inside—such as the “fake glories” forged by earlier historians. Diverse circumstances, however, limited their enlightened endeavour, and whoever was eager to resume it in the eighteenth century came up against the restrictions imposed on modern culture by Enlightened despotism.