排序方式: 共有27条查询结果,搜索用时 15 毫秒
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Joan Garcia Garriga Kenneth Martínez Molina Javier Baena Preysler 《Journal of World Prehistory》2012,25(2):81-121
In the debate over Western Europe??s Middle to Upper Palaeolithic transition we need to consider the importance of both the chronology and the ecological context of the different techno-complexes, as well as the organization of production and consumption activities. In this article we study the adaptative strategies of Middle Palaeolithic human communities based on the information obtained from archaeological sites north of the river Ebro. This transition in the northern part of the peninsula presents a chronological and geographic dichotomy, with the appearance of the Upper Palaeolithic and survival of the Middle Palaeolithic. The geographic distribution appears to indicate intergroup competition and the existence of contact, albeit of an unverified nature. This competition would explain the time that elapsed before one of the cultural, and perhaps biological, groups triumphed over the other in a process culminating in the expansion of Upper Palaeolithic technology. 相似文献
22.
This paper studies the vertical and horizontal interactions between federal and regional governments in terms of public deficits. Recent studies commonly restraint budget slippages to the incentives created by the institutional arrangements within a country. Alternatively, we estimate here a fiscal reaction function for the Spanish regions over the period 1995–2010, paying special attention to the impact of the federal fiscal stance on regional fiscal imbalances. Our results indicate that higher public deficits for the central government encourage larger fiscal imbalances at the regional level. This vertical interaction is interpreted in the context of yardstick competition models. We also find a significant impact from fiscal decisions taken by governments at the same decision‐making tier in a specific region. 相似文献
23.
José Ignacio Giménez‐Nadal José Alberto Molina Jorge Velilla 《Journal of regional science》2018,58(1):141-158
We analyze whether efficiency wages operate in urban labor markets, within the framework proposed by Ross and Zenou, in which shirking at work and leisure are assumed to be substitutes. We use unique data from the American Time Use Survey (ATUS) that allow us to analyze the relationships between leisure, shirking, commuting, employment, and earnings. We confirm that shirking and leisure are substitutes, and present an estimate of this relationship, representing the only empirical test of the relationship between a worker's time endowment and shirking at work. Our findings point to the existence of efficiency wages in labor markets. 相似文献
24.
Iain G. Cormack Pablo Loza-Alvarez Lluis Sarrado Sergio Tomás Ivan Amat-Roldan Lluis Torner David Artigas Josep Guitart Joaquim Pera Josep Ros 《Journal of archaeological science》2007
In this work, two-photon absorption fluorescence is used as a non-destructive method to detect the presence of paint upon an archaeological sample. The objective was to recover writing that, due to the discoloration caused by the passage of the time, was barely readable. The technique has been successfully applied to determine the consular date painted upon the neck of a Dressel 1A amphora found in the Roman village of Iesso (Guissona), in Catalonia. The identification of the consular date provides a terminus post quem for the foundation date for the city as well as a starting date for the Roman colonization of Hispania Citerior. 相似文献
25.
Lluis Barraquer Bordas 《Journal of the history of the neurosciences》2013,22(3):203-215
History of Ophthalmology by H.E. Henkes, C.I. Zrenner, D.M. Albert. Kluwer, Dordrecht, 1993. 161 pp. £49. ISBN 0–79232–053–0. 相似文献
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Fernando Molina‐Gonzlez Francisco Nocete‐Calvo Antonio Delgado‐Huertas Juan Antonio Cmara‐Serrano Rafael M. Martínez‐Snchez Sylvia Jimnez‐Brobil Mª. Teresa Miranda‐Len Jos Antonio Riquelme‐Cantal Liliana Spanedda Cristbal Prez‐Bareas Rafael Lizcano‐Prestel Jos Miguel Nieto‐Lin Trinidad Njera‐Colino Arsenio Granados‐Torres Francisco Carrin‐Mndez 《Oxford Journal of Archaeology》2019,38(2):189-213
A large sample of human bones from a series of archaeological sites in the south‐eastern Iberian Peninsula was selected for δ13C and δ15N stable isotope analysis. Except for some contrast samples, the remains date from the first half of the second millennium cal BC and are ascribed to the Argar Culture, which developed during the Bronze Age in south‐eastern Iberia. Most authors have considered that this region reached a high degree of social hierarchical organization at this time, as demonstrated by the funerary record, both with regard to the grave goods and to the evidence of physical effort and diseases on the human remains. Results of the isotope analysis revealed the existence of differences among the settlements studied, as well as differences over time within every settlement and among the various individuals tested. Some variances can be assigned to social classes/status and others are linked to chronological factors. In particular, changes in δ13C can be explained by the increasing aridity of the first half of the second millennium cal BC, although other causes can be put forward too. 相似文献