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In the Andes, there are several pre-Hispanic irrigation networks with structures destined for water storage. However, it has not been widely discussed in archaeological research. This is probably due to their being difficult to identify. The aim of this study is to explore the use of diatom assemblage analysis as a methodological tool suitable to help in the identification and characterization of these ancient hydraulic structures. We analyzed two archaeological structures interpreted as water reservoirs from north-western Argentina (EH1 in Antofagasta de la Sierra and U-88R1 in Yocavil) and compared them to current reservoirs. The diatom species composition and the changes in the dominant ecological groups in the studied structures highlight different periods of hydraulic behavior. EH1 contained and stored water, but there were periods of time in which there was a lack of use or abandonment of the structure. However, the U88-R1 structure does not have diatom evidence of containing standing water for a prolonged time but presence of wet soils. Thus, the structure could have been used for other water management strategies. The results show that diatom analysis is a methodological tool with a high potential to study ancestral hydrotechnologies.  相似文献   
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Nora Stel 《对极》2016,48(5):1400-1419
A significant part of Lebanon's Palestinian refugees live in unofficial camps, so‐called “gatherings”, where they reside on Lebanese land. Many of these gatherings are now threatened with eviction. By means of two qualitative case studies this article explores responses to such eviction threats. Residents, it turns out, engage in deliberate disinformation and stalling tactics and invoke both a professed and real ignorance about their situation. In contrast to dominant discourses that project Palestinian refugees as illicit and sovereignty undermining, I explain these tactics as a reaction to, and duplication of, a “politics of uncertainty” implemented by Lebanese authorities. Drawing on agnotology theory, and reconsidering the gatherings as sensitive spaces subjected to aleatory governance, I propose that residents’ responses to the looming evictions are a manifestation of the deliberate institutional ambiguity that Lebanese authorities impose on the gatherings. As such, the article contributes to understanding the spatial dimensions of strategically imposed ignorance.  相似文献   
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The grave of La Balance-Ilot P, in Avignon, southern France, is an individual and isolated burial, attributed in the 1970′s to the Mesolithic or the Early Neolithic. The grave, partially unearthed, was exhibited and stored at the Calvet Museum until its rediscovery and laboratory excavation in 2009. We used 3D laser recording and field anthropological methods, followed by a multidisciplinary approach. The deceased, an adult male, was buried in primary deposition without any architectural features preserved. For the first time in the Mediterranean early Neolithic, this study led to the identification of a garment adorned with sophisticated embroidery using 158 red-colored Columbella rustica shells and 16 red deer canines. Calibrated AMS dates allow us to reliably place it in the early 5th millennium b.c. reinforcing evidence for long distance intercultural relationships in Europe during the Neolithic.  相似文献   
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Visitors’ assessments of the negative impact of tourism, on physical and social environment, vary based on the location where the evaluation occurs. Research that focuses on identifying visitors’ norms within outdoor recreation settings has not been able to link the geographical location with the corresponding evaluation of unacceptable levels of impact. This study combines a traditional on-site visitor survey with a Public Participation Geographic Information Systems survey to produce spatially explicit information on visitors’ acceptance of tourism impacts. Using a web-based participatory survey, visitors were asked to indicate specific locations where they felt the effects of tourism disturbed the quality of their experience in Oulanka National Park. These evaluations were analyzed at multiple scales – destination, specific zones, and sites – to promote more efficient park management. Based on visitor evaluations, we found a collection of hotspots in the park where tourism has already caused unacceptable impacts. Visitors noted that crowding and erosion disturbed their experiences, especially along highly visited trail sections, while littering was considered problematic near wilderness huts. However, participant satisfaction at these sites was not lower than elsewhere in the park. This indicates that the association between negative impacts of tourism and visitor satisfaction is not straightforward, but complex. This study encourages the collection of spatially accurate data on visitors’ assessments of the effects of tourism because it has the potential to more efficiently direct park management policies. In addition, spatial techniques provide a new means to monitor the impacts of tourism, acknowledging that visitors’ perceptions of acceptability of tourism impacts also vary within tourism destinations, such as parks.  相似文献   
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Analysis of the fertility histories of women born between 1850 and 1900, as given in the Utah Population Database (UPDB), reveals the effect of the number, as well as the sex composition, of previous children on birth-stopping and birth-spacing decisions. Specifically, agricultural and Church of Jesus Christ of Latter-day Saints (LDS) households—two sub-populations that might have placed different values on male and female children for economic, social, and/or cultural reasons—showed a distinct preference for male children, as expressed by birth stopping after the birth of a male child and shorter birth intervals in higher-parity births when most previous children were female. Remarkably, women in both the early "natural fertility" and the later contraceptive eras used spacing behavior to achieve a desired sex mix. Although the LDS population had relatively high fertility rates, it had the same preferences for male children as the non-LDS population did. Farmers, who presumably had a need for family labor, were more interested in the quantity than in the sex mix of their children.  相似文献   
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