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21.
The absolute chronology of the agricultural soil from organic matter has always been difficult to measure due to several reasons. In our work on the Prehispanic agriculture in the Calchaqui Valley – Argentina, however, an absolute chronology is necessary to distinguish the Inca prevalence of the previous agricultural structure. Instead of looking for a new dating methodology, we have used the 14C method trying to eliminate the error sources typical of soils. Thus, we have dated new types of agricultural structures, with the assumption that they would have worked as archaeological “seals”. In the present paper we show that the dating of the beginning of the use of the Prehispanic agricultural systems has been successful.  相似文献   
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Hydrodynamic sorting is a taphonomic process able to transport and scatter bones deposited in archaeological and paleontological sites. This study presents the results of experimentation performed in an artificial flume with guanaco (Lama guanicoe) bones of different ontogenetic development, dry and saturated in water, in hydric flows velocities of 15 and 30 cm/s. The obtained results show that bone global density, the age of the individual, the dry or wet bone state, and the hydric flow velocity influence significantly bone dispersion. In this way, bones from immature individuals with unfused secondary growth centers and relatively low bulk density have better possibility of being transported than fused bones from adult individuals. Taking into account the results obtained in this experimentation and the feasibility of discriminating age categories in fossil assemblages, two bone groups with differential potential transport are presented in this paper. These transport groups constitute a methodological tool to evaluate the role hydric current may had played in the formation of a fossil assemblage.  相似文献   
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Social Sciences and Humanities are increasingly interested in the relationship between society and material culture, and archaeology can provide, among other contributions, its chronological depth and the variability and certain regularities in mortuary rituals. In this respect, archaeological literature frequently cites cases of a few human bones redeposited at mortuary sites, often burials of adults accompanied by some bones of an infant, but without a clear pattern being discernable. In contrast, research on the Bronze Age Cogotas I archaeological culture in the Iberian Peninsula (MBA and LBA, ca. 1800–1100 cal BC) has identified what seems to be an emerging pattern: primary burials of very young children accompanied by the bone of an adult, possibly female, who had died before, even long before, as the statistical analysis of the radiocarbon dates of the individuals involved appears to corroborate. This may therefore be a ritualised mortuary practice that included bone relics, but its explanation is not simple, due to the polysemic nature of such relics. The creation and maintenance of real or fictitious kinship ties, a special protection for dead infants, possible gender aspects, ideas about fertility and renewal, strengthening interpersonal relationships, legitimisation of emerging inequality, etc., are some of the possible components of this social practice which was until now unknown in the Iberian prehistory, but also little known in other areas in European prehistory.  相似文献   
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A new microdomatid gastropod, Eopagodea sevillana gen. and sp. nov., is described from the Late Ordovician (pre-Hirnantian Ashgill) limestones of Seville, Ossa Morena Zone, Spain. Palaeozoic microdomatids lived in shallow-water environments and were restricted to warm-water regions. Occurrence of microdomatid gastropods in the pre-Hirnantian Ashgill limestones of the Cerrón del Hornillo syncline (Ossa Morena Zone, Spain) is interpreted as an example of an influx of warm-water faunal elements into the otherwise cool to cold climate of the Mediterranean region during a short-termed, pre-Hirnantian increase of palaeotemperatures. The Late Ordovician microdomatid genus Daidia Wilson, 1951, is revised and two new Late Ordovician (Ashgill) subspecies of Daidia cerithioides (Salter, 1859) are described: Daidia cerithioides sewardensis n. subsp. from the Don River area of the York Mountains, Seward Peninsula, western Alaska, and Daidia cerithioides wilsonae n. subsp. from the Little East Lake Formation of northwestern Maine.  相似文献   
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The circumstances surrounding the call for a referendum on national independence in Catalonia in October 2017 led to high levels of collaboration between two, at first sight, unlikely partners: anarchists and Catalan independentists. Unlikely as this alliance may seem, it was well grounded on a number of factors: first of all, in the State response to the independentist challenge—the massive repression and the blockading of institutional channels to process nationalist demands pushed both movements closer in opposition to the central government; and secondly, in the prolonged interactions (in specific regions and industries) and engagement in joint solidarity activities between anarchists and segments of the Catalan left who had been influenced by the bottom-up approach of the indignados movement. Finally, this collaboration was also rooted on a long history of mutual engagement between anarchism and sectors of Catalan nationalism that, while not unproblematic, provided deep roots to this dialogue.  相似文献   
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This article provides an introduction to the themed section ‘Anarchism and the national question—historical, theoretical and contemporary perspectives.’ We discuss first the long and often overlooked engagement of anarchists with the colonial and national liberation question, particularly—but not exclusively—in the heyday of the movement (from the second half of the 19th to the first decades of the 20th century). We discuss in particular the overlaps and tensions between anarchists and republicans (those who favoured republics as opposed to monarchies) and anti-colonial nationalists (anti-colonialists who defended the right of national self-determination). Then we proceed to discuss the potential for a dialogue between anarchist and nationalism studies based on three interventions. First, to problematise the narrative that conflates nations with state-building processes. Second, to better grasp the emergence of alternatives to the nation–state as a historical construct. Third, to complicate narratives that associate in an unproblematic fashion internationalism and classless society. Finally, the introduction highlights the four questions which lie at the core of the themed section and discuss briefly how the papers relate to these.  相似文献   
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This article claims that welfare states modelled on a contributory basis and with a system of entitlements that assumes stable two-parent families, a traditional breadwinner model, full formal employment and a relatively young age structure are profoundly flawed in the context of present-day challenges. While this is true for affluent countries modelled on the Bismarckian type of welfare system, the costs of the status quo are even more devastating in middle-income economies with high levels of inequality. A gendered approach to welfare reform that introduces the political economy and the economy of care and unpaid work is becoming critical to confront what may very well become a perfect storm for the welfare of these nations and their peoples. Through an in-depth study of the Uruguayan case, the authors show how the decoupling of risk and protection has torn asunder the efficacy of welfare devices in the country. An ageing society that has seen a radical transformation of its family and labour market landscapes, Uruguay maintained during the 1980s and 1990s a welfare state that was essentially contributory, elderly and male-oriented, and centred on cash entitlements. This contributed to the infantilization of poverty, increased the vulnerability of women and exacerbated fiscal stress for the system as a whole. Furthermore, because of high levels of income and asset inequality, the redistribution of risk between upper- and lower-income groups presented a deeply regressive pattern. The political economy of care and welfare has begun to change in the last decade or so, bringing about mild reforms in the right direction; but these might prove to be too little and too late.  相似文献   
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This paper addresses the problem of increased visa discrimination for people from low-income countries since the events of September 11th. She uses the example of changes in her own experiences as an Argentinian citizen wishing to travel to the USA to highlight changes that are occurring throughout South America. The difficulties involved include unsympathetic automated telephone answering systems, non-refundable application fees, and long-distance travel to the Embassy.  相似文献   
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