Inca builders at Machu Picchu National Archaeological Park

Knowledge about the Inca measurement system is based on information from the colonial chronicles and modern studies of the 16th-century Quechua dictionaries. Based on those texts, we can presume that the Incas used an anthropometric system of measurement adopted from the proportions of the human body. Using cosine quantogram analysis and statistical verification, it is possible to verify the existence of the measurement system used by the Inca architects. For this purpose, a measurement series of architectural and water infrastructure elements were collected from 3D point cloud of the Chachabamba and Machu Picchu settlements in Machupicchu National Archaeological Park.     

Chronicle of an early demise,surname extinction in the fifteenth and the seventeenth centuries

It has been amply demonstrated that individuals' reproductive capability is the key explanatory phenomenon for understanding onomastic disappearance during the early modern period. This article analyzes the evolution and consequences of surname extinction in a specific population: Catalonia in the sixteenth and seventeenth centuries. In this article two aspects are examined. First, the observed disappearance of surnames is estimated through historical data collected in the Llibres d'Esposalles (Marriage Books) from 1481 to 1600 at Barcelona Cathedral. Second, the estimated natural extinction of those surnames registered in 1481 is forecast by applying a statistical branching process.     

The brokerage role of supporting organizations inside clusters: how does it work?

The objective of this research is to examine in depth the brokerage roles that supporting institutions play in conducting local business and applying technical knowledge inside clusters. We identify three main roles: a coordination role, characterized by the efforts that organizations play in internally coordinating themselves and establishing a shared institutional framework; an interconnector role, where organizations foster communication along the value chain of the industry; and a gatekeeper role that allows organizations to connect cluster members with external networks. Results obtained in the Toy Valley cluster provide evidence that each kind of supporting organization tends to specialize in specific roles, since universities are best for a coordination role with regard to technical knowledge while private organizations are key for vertical communication and coordination. Similar results were obtained when analysing the extra-cluster contacts that these organizations develop as gatekeepers, as they tend to establish specific communication conduits with similar alters in external networks.     

State policy,institutional framework and technical monopoly in early modern Spain: invention patents in the Crown of Aragon during the seventeenth century

This paper examines invention patents in the Crown of Aragon during the seventeenth century. Patents were granted by the Council of Aragon, the Royal Council responsible for political and legal issues arising in the Spanish territories belonging to the Crown of Aragon. The Council's functions in the area of patents arose out of the monarchy's interest in extending the validity of royal patents from Castile to Aragon in order to enhance its control over technical discoveries and developments, and to raise fresh revenues for the treasury. Both foreign and Castilian inventors applied for patents, which were immediately applicable, but the privileges they entailed were accepted only with difficulty by the Aragonese institutions. This reluctance severely curtailed the number of applications. Meanwhile, the Council's desire to cooperate with the monarchy led it eventually to define criteria for the grant of patents. However, the legal and institutional structure of the Crown of Aragon made it difficult for inventors to enforce and defend their rights. The lack of new patent applications to the Council in the later seventeenth century illustrates how the existence of a separate jurisdiction obstructed the consolidation of a patents system in the Crown of Aragon, hindering the spread of technical progress in Spain.     

Trace fossils on penguin bones from the Miocene of Chubut,southern Argentina

Several traces of biological interaction were found on penguin bones from the basal levels (Aquitanian) of the Miocene Gaiman Formation in the lower Chubut valley of the Provincia del Chubut, Argentina. The fossil-bearing beds were deposited in littoral to sublittoral environments within sediments of mostly pyroclastic origin. We interpret many traces to have been produced by predators and/or scavengers while the penguins were still in a breeding area. Many bones show cracking marks due to aerial exposure. The material is disarticulated as is usual in recent breeding areas. Potential predators were coeval terrestrial mammals, most probably marsupial carnivores. After a marine transgression, these bones were buried or exposed on the sea bottom where they could be colonized by algae, sponges, cnidarians, and other benthic organisms. We identified sponge borings in several bones. Other traces are interpreted to have been produced by echinoderms feeding on sponges or algae. No evidence of other invertebrate predators such as muricid or naticid gastropods, or decapods was found. Finally, other traces appear to have been generated by shark and possibly teleostean vertebrates feeding on epibionts. One coracoid is interpreted to have been marked by a shark that is common in the Gaiman Formation, the carcharhiniform Galeocerdo aduncus. From an ethological (Seilacherian) classification, traces on bones from the Gaiman Formation include Domichnia (sponge perforations), Praedichnia (terrestrial marsupials, sharks, teleosteans) and Pasichnia (echinoderms). Remarkably, remains of marine organisms with skeletons made of calcium carbonate are very poorly preserved in the Gaiman Formation. Only large oysters, sparse shell fragments, skeletal moulds, and bioturbation is evident. The fossil assemblage is mainly composed of phosphatic (e.g. teeth, bones, crustacean parts) and siliceous (sponge spicules, diatoms) remains.     

Book reviews

Local Development — Restructuring, Locality and Economic Initiative in Portugal. Stephen Syrett. Aldershot, Avebury, 1996, US$75.95, ISBN 1 856 28 4840.

Geographic Information Systems: Socioeconomic Applications. David Martin. New York, Routledge, 1996, XXII + 210 pp., £45.00 hb, £14.99 pb, ISBN 0 415 12571 5 hb, 0 415 12572 3 pb.

Town and Country Planning in Britain (11th edition). J. B. Cullingworth and V. Nadin. London, Routledge, 1994, XX + 343 pp., £14.99pb, ISBN 0 415 10708 3.

Towards Visitor Impact Management. Visitor Impacts, Carrying Capacity and Management Responses in Europe's Historic Towns and Cities. J. Glasson, K. Godfrey and B. Goodey (with H. Absalom and J. Van der Borg). Aldershot, Avebury, Urban and Regional Planning and Development Series, 1995, XII + 189 pp., £35.00 hb, ISBN 1 85972 054 4.     

Landscape Construction and Long-Term Economic Practices: an Example from the Spanish Mediterranean Uplands Through Rock Art Archaeology

We argue in this paper that Levantine rock art in the Spanish Mediterranean basin allows us to ‘map’ the economic landscape of its makers. Rock art would be the ‘monumental’ side of a dual process of landscape construction: on the one hand, rock art is the first ‘cultural’ action on the landscape beginning in the Early Neolithic; on the other hand, the first evidence of active modification of the Mediterranean vegetation comes from this period. But this evidence as well as other kinds of archaeological remains are still relatively scarce in the uplands; rock art is therefore the most complete type of evidence we can use to support an early use of the Mediterranean upland environment. We use statistical and geographical analysis, together with archaeological, ethnohistorical, and ethnographic sources and pollen data, in order to support the idea of early use and exploitation of the Mediterranean uplands since the Neolithic, and into contemporary times.