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41.
Glynis Jones Huw Jones Michael P. Charles Martin K. Jones Sue Colledge Fiona J. Leigh Diane A. Lister Lydia M.J. Smith Wayne Powell Terrence A. Brown 《Journal of archaeological science》2012
Results of analyses of the photoperiod response gene (PPD-H1) and simple sequence repeats (SSRs) in modern landraces of cultivated barley were used as evidence for the mechanism of agricultural spread in Neolithic Europe. In particular, we explored the usefulness of considering adaptive genes as indicators of past selective pressures acting on crops, during their spread through Europe. In some areas, such as the Alpine region, Britain and Scandinavia, we have evidence to suggest that the adaptation of crops to certain climatic conditions may have contributed to the timing of agricultural spread. At the northern fringes of Europe, and in higher altitude locations in central Europe, the introduction of more suitably adapted cereals may have facilitated successful agriculture to trigger agricultural expansion. This research opens up the possibility of investigating other genetic adaptations to climate, which would permit a fuller evaluation of the relative contributions of climate/crop and forager/farmer interactions in the process of agricultural spread. 相似文献
42.
Jayd Hanna Abigail S. Bouwman Keri A. Brown Mike Parker Pearson Terence A. Brown 《Journal of archaeological science》2012
Excavations at Cladh Hallan, a Bronze Age-Iron Age settlement on South Uist in the Outer Hebrides off the west coast of Scotland, revealed the skeletons of two adults, a sub-adult and a child buried beneath the foundations of three roundhouses. Osteological and isotopic evidence has shown that the male adult skeleton is a composite made up of parts of at least three different individuals. To test the hypothesis that the female skeleton was also a composite we examined ancient DNA from four of its components: the skull, mandible, right humerus and right femur. Seven polymerase chain reactions (PCRs) were attempted, these covering positions 15,996–16,420, 16–132 and 232–368 of the mitochondrial DNA hypervariable I and II regions. Three PCRs were successful for each sample and a total of 55 sequences were obtained from the cloned products. After exclusion of possible contaminating sequences, the remaining 34 were compared. It was concluded that the mandible, humerus and femur come from different individuals. Insufficient data were obtained to draw conclusions regarding the origin of the skull. The presence of two composite skeletons at Cladh Hallan indicates that the merging of identities may have been a deliberate act, perhaps designed to amalgamate different ancestries into a single lineage. 相似文献
43.
Gavin Brown 《Gender, place and culture : a journal of feminist geography》2012,19(4):541-542
This article is part of a review symposium of Sheila Cavanagh's book Queering bathrooms: gender, sexuality and the hygienic imagination, 2010, Toronto, University of Toronto Press, 295 pp., £19.94 (paperback), ISBN 978-1-4426-10736 相似文献
44.
ABSTRACT The headcount ratio in Chile has declined from 40 percent to 14 percent since 1987. However, most analysis of this reduction uses national and regional poverty statistics. In contrast, we employ poverty mapping methodologies to find heterogeneity in the effectiveness of transfers across counties. To better understand this variation, we explore the roles of characteristics of the local population, structural features of the county, and geography. The greatest reductions in poverty occur in rural households, yet population characteristics and geography are also important. These findings suggest that targeting at low levels of aggregation can deliver further reductions in poverty. 相似文献
45.
Kerry F. Thompson 《Archaeologies》2011,7(3):502-517
There are several major considerations for the Navajo Nation that foreground questions of inclusion in public archaeology.
The traditional Diné view of archaeological remains requires an evaluation of the public archaeologist’s notion of inclusion
of Diné communities in archaeological research. Archaeological work on the Navajo Nation is also often a source of frustration
for Diné communities because a shortage of human and monetary resources slows the pace of legislated archaeological compliance,
in turn, slowing down vital housing and road infrastructural development. Finally, for Diné archaeologists, the structure
of project development is not necessarily conducive to the creation of an intellectual foundation for Diné archaeology or
community engagement in archaeological research. 相似文献
46.
Tim Brown 《Social & Cultural Geography》2013,14(4):489-506
The aim of this paper is to suggest an analytical framework through which the complex question of hospital closure and local protest can be further explored. The significance of this area of study lies with the extraordinary events that surrounded a campaign to save the Kidderminster General Hospital from downsizing. Whilst the hospital was not saved, the local campaign committee organizing the protest took their fight into the political arena and were successful in gaining a parliamentary voice in the 2001 general elections. Such an achievement has had considerable political implications, however, the question asked here is how might we begin to interpret the events that took place. To this end, the paper draws on current geographical literature in an attempt to construct a framework that accounts for both national policy debates and the local context within which such campaigns emerge. 相似文献
47.
The suitability of imagery from the Advanced Very High Resolution Radiometer (AVHRR) on the NOAA series of satellites for the synoptic classification of circulation trends in the European Arctic is assessed with reference to data from three climate stations. Simplified synoptic cyclonic classifications are derived from the satellite imagery and tested against climate data. Five classes of frontal system are derived from the tracking of systems over the UK‐Scandinavia‐Baltic region using 1460 satellite images over two years. An index based on the qualitative interpretation of satellite imagery was related to the reference data. The tracking of the systems in the imagery also facilitates a comparison of travel times across the region and the frequency of occurrence. Frontal systems that remain largely stationary over the Baltic were found to correlate best with precipitation at the reference sites. The paper thus investigates the use of AVHRR imagery for the categorisation of weather patterns towards deriving quantitative relationships between circulation classes and weather elements (such as temperature and precipitation) where, for example, climate data are sparse or where skills required for the interpretation of Height Potential Fields are lacking. 相似文献
48.
49.
Katrina Myrvang Brown 《Scottish Geographical Journal》2013,129(2):109-129
In Scotland, as elsewhere in Western Europe, many examples of historical common land have endured to the present day, but are under major pressure from the economic restructuring, socio-cultural recomposition and changing policy context that characterise contemporary rural change. For the crofting common grazings of Scotland, two particular challenges have arisen in the form of: (1) the growing difficulty of gaining sufficient livelihood contributions from traditional agriculturally-based activities; and (2) the increasing heterogeneity of rights-holders. This paper elaborates the findings of a recent survey, which sought to identify the main implications of these challenges for common grazings use and governance. An overall decline in levels of use of common grazings was identified, as well as decreasing involvement and investment in associated local institutions. This informs a discussion of the factors shaping the role of historical common land in contemporary rural spaces, an area neglected in the common property literature. 相似文献
50.