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11.
Transatlantic trade affected the coastal area of West Africa that became Liberia in 1822. The impact of that trade has confused historians of the region, particularly the social and economic effects the trade had on the Vai, Kru, Glebo, and other ethnic groups. Before the arrival of Europeans in the fifteenth century, coastal pre-Liberia had been affected by internal and external social dynamics. The Mande, Mel, and Kwa were the first linguistic groups to reside in the region. The earliest home of the Mande has been traced to the area north of the Niger River, but there is disagreement as to the origins of the Mel and Kwa. All three linguistic groups contributed to population growth. Indeed, such Mel-speaking ethnic groups as the Kissi and Gola, and such Kwa-speakers as the Dei, Bassa, Kran, Kru, and Glebo came to pre-Liberia in about 988 A.D. The Mande-speaking groups, including the Mende, Bandi, Loma, and Vai, settled long after the other two linguistic groups had moved there. The Vai, isolated from other Mande-speakers for over two thousand years, reached the coastal area in the sixteenth century.1  相似文献   
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The thermoluminescence dating method was applied to 77 heated flints from the Mousterian layers of Hayonim Cave in order to provide a precise TL-based chronology for this important Levantine sequence. A detailed dosimetric study was performed by using 76 dosimeter capsules and revealed strong spatial dose-rate variations. In parallel, Fourier transform infrared spectrometry enabled the identification of various mineral assemblages in the sediments of the cave and to localize the boundaries of these assemblages. By comparing these two data sets, it is shown that low dose-rate values (∼500 μGy/a) are systematically recorded in areas where the calcite-dahllite (CD) assemblage is preserved, whereas higher values (up to 1300 μGy/a) are associated with the leucophosphite, montgomeryite, variscite and siliceous aggregates (LMVS) assemblage. The dosimetric and mineralogical information was combined in order to assess, where possible, the dose-rate experienced by each flint during its burial. Some of the flint samples analyzed were too close to mineral assemblage boundaries and were therefore discarded. This rigorous selection led to TL ages ranging from 230 to 140 ka for the lower part of the Mousterian sequence (layers F and Lower E), which contains lithic industries characterized by blade production using the laminar method.  相似文献   
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Sufficient and reliable health care access is necessary for people to be able to maintain good health. Hence, investigating the uncertainty embedded in the temporal changes of inputs would be beneficial for understanding their impact on spatial accessibility. However, previous studies are limited to implementing only the uncertainty of mobility, while health care resource availability is a significant concern during the coronavirus disease (COVID-19) pandemic. Our study examined the stochastic distribution of spatial accessibility under the uncertainties underlying the availability of intensive care unit (ICU) beds and ease of mobility in the Greater Houston area of Texas. Based on the randomized supply and mobility from their historical changes, we employed Monte Carlo simulation to measure ICU bed accessibility with an enhanced two-step floating catchment area (E2SFCA) method. We then conducted hierarchical clustering to classify regions of adequate (sufficient and reliable) accessibility and inadequate (insufficient and unreliable) accessibility. Lastly, we investigated the relationship between the accessibility measures and the case fatality ratio of COVID-19. As result, locations of sufficient access also had reliable accessibility; downtown and outer counties, respectively, had adequate and inadequate accessibility. We also raised the possibility that inadequate health care accessibility may cause higher COVID-19 fatality ratios.  相似文献   
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First Nations peoples are revitalising diverse cultural fire practices and knowledge. Institutional and societal recognition of these practices is growing. Yet there has been little academic research on these fire practices in south-east Australia, let alone research led by Aboriginal people. We are a group of Indigenous and settler academics, practitioners, and experts focused on cultural fire management in the Victorian Loddon Mallee region. Using interviews and workshops, we facilitated knowledge sharing and discussion. In this paper, we describe three practice-oriented principles to develop and maintain collaborations across Aboriginal groups, researchers, and government in the Indigenous-led revitalisation of fire on Country: relationships (creating reciprocity and trust), Country (working with place and people), and power (acknowledging structures and values). Collaborations based on these principles will be unique to each temporal, social, cultural, and geographic context. Considering our findings, we acknowledge the challenges that exist and the opportunities that emerge to constructively hold space to grow genuinely collaborative research that creates change. We suggest that the principles we identify can be applied by anyone wanting to form genuine collaborations around the world as the need for social–ecological justice grows.  相似文献   
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ABSTRACT

The term Concotto refers to fragments or patches of hard heated clay that derive from living surfaces, walls, and ovens. Concotto fragments are found throughout the Italian peninsula and date from the Neolithic to the Iron Age. Current studies express contradictory opinions about whether or not the Concottos on living surfaces represent intentionally constructed surfaces or the secondary products of the contact between hot embers and sediments. This study uses micromorphological analysis to investigate the function and composition of Concotto surfaces from several domestic structures at the Early Bronze Age village of Afragola in southern Italy. Afragola is an exceptionally preserved agricultural village that was covered by almost 1?m of volcanic ash during the Vesuvius eruption in 3945?±?10 cal. BP. The Concottos at Afragola are hard, red surfaces that are typically associated with burned materials. Micromorphological analysis reveals that the Concottos were intentionally made by laying down patches of clay and then heating them to create a hard, flat surface. This study explores the potential uses of the Concotto as cooking surfaces during the Early Bronze Age of southern Italy.  相似文献   
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The authors present an example of close field collaboration among prehistorians and researchers from different disciplines (particularly the geosciences), within the context of a long program of interdisciplinary research at the caves of Kebara and Hayonim (Israel). We outline the benefits brought about by the presence of different specialists being in the field during the excavation over long periods. Specifically, daily collaboration in the field during the excavation brings about: (1) A consensus of choice of strategic areas to excavate, either at the beginning of the project or during successive field campaigns, while taking into account the needs and goals of different specialists and their needs in taking samples; (2) A meeting of different points of view with many discussions of stratigraphy and site formation processes, which in caves are quite complex; (3) A unification of specialized vocabulary and jargon specific to each discipline by constant interaction in the field, which in turn facilitates communication among specialists; (4) A positive didactic element in training doctoral students in the field. This interdisciplinary strategy is more or less widespread now, but it was not the case in the early 1980s, and actual integration of results from the sciences (particularly the geosciences) came about only fairly recently. Without doubt, the awareness of the importance of such interdisciplinary archaeological data for discussing archaeological issues has ultimately paved the way for active interdisciplinary collaboration sprouting from the fieldwork, and has led to the generation of more robust and accurate interpretations.  相似文献   
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Christine Goldberg 《Folklore》2013,124(3):309-320
The female helper identified in two recent articles in this journal is a figure in a stereotyped scene that exists in a number of different folktales. When the hero arrives at the ogre's house, this woman warns him that when the ogre returns, he will eat him. Then she protects the hero by hiding him. When the ogre comes in, he smells the human, but the woman (his wife, daughter, grandmother, or captive) prevents him from finding the visitor.  相似文献   
20.
Columbid remains are commonly recovered in Quaternary deposits, but identification to the species level has been difficult, if not impossible, in areas where several species occur in sympatry. In the U.S.A., the problem becomes complex in the Southwest, where Neotropical species from Mexico occur in addition to the typical North American species. Twelve major skeletal elements of nine species of the Columbidae likely to be found in Quaternary deposits in the American Southwest were examined quantitatively. Discriminant analyses were used in an attempt to distinguish individual elements of the examined species. The skull, femur, tibiotarsus and tarsometatarsus of some species could be discriminated, presenting the possibility of identifying these elements to the species level. Other elements could be identified with varying levels of success, providing a cautionary note in identifying solitary elements beyond the genus level.  相似文献   
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