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Jeffrey H. Plochocki 《International Journal of Osteoarchaeology》2002,12(5):349-355
Directional bilateral asymmetries in human gross skeletal morphology are largely attributable to differential mechanical loading from handedness during endochondral bone growth. While much has been done in the way of identifying directional asymmetries of the upper limb in relation to handedness, comparatively little research has focused on asymmetry in the lower body. The present paper analyses asymmetry in the human sacrum in a sample of 238 modern individuals. Measurements of right and left sides of the lateral and posterior breadths of the alae and the maximum height of the auricular surface were used. Asymmetry was calculated as: [(left side − right side) ÷ right side] * 100. Directional asymmetry was identified using a one‐sample t‐test against a hypothesized mean of zero. Significant directional asymmetry (P < 0.05) was found in all three dimensions. The pattern of asymmetry is consistent with models describing the influence of right‐handedness on the lower body, which predicts that left side dimensions will be larger. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
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The pattern of initial settlement in the Shire of Denmark in Western Australia is mapped using land registrations of the date of the first lease and first freehold grant. Settlement started near the main rivers before World War I and accelerated with Group Settlements of the 1920s. However, many Group settlers abandoned their land before 1940. Little development occurred until in-migration during the last 30 years. Local persistence of families was estimated from records of land tenure, rate books, electoral rolls, postal directories and interviews. The rate of persistence of families on each block varied considerably. Geographical expansion of holdings among successive generations of founding families reflects more general processes such as clone colonization in which, by mutual support and intra-family co-operation, families undertake short-distance migration to newly acquired—often abandoned—holdings. In this way, settlers have gradually created a continuously settled landscape in this once densely forested area of south-western Australia. Land alienation has occurred since 1900 in the study area of 217 surveyed lots, or ‘blocks’ which are, on average, 150 acres (70 hectares) in size. The geographical pattern of initial settlement comprised isolated sites, occupied in the wake of early lumbering, rather than a linear frontier. 相似文献
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During the excavation and analysis of a 6th-century AD vessel in Tantura Lagoon, Israel, members of the joint Institute of Nautical Archaeology and Center for Maritime Studies team located an Arab-Period vessel in the vicinity. The dating of the vessel to the 8th–9th century AD is based on pottery, found in association with timbers. Only a matter of days before the end of the excavation season, one end of the vessel was unearthed and preliminary recordings, drawings, and photographs were made. None of the timbers were removed from their in-situ positions for analysis as both time and facilities were not permitting. Though a full analysis was not possible, information gleaned during the several days of recording affords an understanding of the ship's construction. 相似文献
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