Implications of age variation and sexual dimorphism in modern equids for Middle Pleistocene equid taxonomy

Interspecific variation in the equid lineage is limited when compared with other large mammal lineages, while a considerable amount of intraspecific ecomorphological variation occurs. This has led to considerable debate regarding the taxonomic status of palaeontological and archaeological equid remains. The possible confounding impact of sex and age variation on analyses of archaeological equid remains has so far remained untested. This could be especially problematic when it is unknown whether an assemblage contains more than one equid species, breed or hybrid. Here, sex and age variation in modern equid species is examined and compared to variation in Pleistocene equid assemblages from northwest Europe. Sex variation in the longbones of modern equid species was found to be lower than variation over time. Similarly, age variation in dental elements of the same species is predominantly lower than diachronic variation, although caution needs to be taken when an archaeological assemblages consists mostly of elements at a similar wear stage. To assess whether late Middle Pleistocene caballoid horse fossils should be assigned to multiple species or be considered to form a monospecific group, the coefficients of variation for measurements on fossil horse remains were compared with those for modern equid specimens. Results indicate that the fossil assemblages are similarly variable to samples of modern material. Taken as a whole, the late Middle Pleistocene caballoid horse lineage is equally variable to an assemblage of modern ponies of a variety of different breeds. This implies that the variation observed between samples dating from different parts of the Middle Pleistocene can be characterised as intraspecific variation within a single species reflecting ecomorphological adaptations to the changeable Pleistocene climate. Copyright © 2010 John Wiley & Sons, Ltd.     

Botanical,malacological and archaeological zonation of settlement deposits at Gomolava

A 2 × 2 m column was excavated within the large-scale excavation carried out by a Jugoslav team at tell Gomolava, Hrtkovci, Jugoslavia, occupied from Vinc?a (c. 5000 BC) to post-Roman times. The archaeological zonation of the column's material is briefly outlined to provide the background to the detailed palaeobotanical, palynological and malacological study. The results of this study are used to aid the reconstruction of the palaeoenvironment of the tell. They indicate that the earliest agrobotanical zone, in which most of the cultigens were already present, but which is characterized by a very low count of charred seeds, persists throughout the Vinc?a, Baden and most of the Kostolac layers of the tell. A marked increase in charred seeds, without the appearance of new species, occurs in the next zone (Bronze and Iron Age). In zone 3 (Iron Age and Roman), Triticum dicoccum, Triticum aestivum and Lens culinaris attain significant levels.An interesting correlation between an increase in shade-loving snail species (zone B) and increase in building activity in the same level needs to be verified by further similar studies. This level is approximately that of the end of the Vinc?a occupation, but does not precisely correlate with an archaeological transition, suggesting that new building styles may have ante-dated the full development of the Baden cultural group on the site. During the third malaco zone (zone C) most shade loving snail species decrease abruptly to make place for open country species. The spread of these species could have been caused by the partial or total abandonment of the tell. Aquatic snails, which had first appeared in the lowest habitation layers of the tell become rare towards the subsequent bronze and iron age occupation of the tell, indicating that hardly any riverine clay was used for the construction of houses within these periods. The final malaco zone, representing the disturbed iron, roman and medieval periods indicates that again open grassy slopes must have occurred on or around the tell.     

Partial cranial trephination by means of Hippocrates' trypanon from 5th century BC Himera (Sicily,Italy)

The paper deals with a new case of partial cranial trephination found in one of the necropolises of the Greek colony of Himera in Sicily. It is one of the very few cases of cranial trephination of Greek classical age. Macroscopic as well as radiological investigations prove that the operation was perimortal as no growth of new bone could be detected, SEM‐EDS microanalysis of the piece revealed the traces left by the tool used during trephination. The review of ancient Greek and Latin medical and surgical texts permitted us to establish that the tool used in Himera was a (trypanon) mentioned by Hippocrates and named terebra by Latin authors. Copyright © 2010 John Wiley & Sons, Ltd.     

清代生员的进学年龄

生员进学年龄的大小与科举制度运作、朝廷文教政策、传统教育风习及当地社会文化区域概貌等密切关联。目前学界对清代生员的进学年龄虽有估算,认为平均年龄在24岁,但存在取样偏少,局限特定时段、单一地域等问题。以近年出版的"北京图书馆藏珍本年谱丛刊"所收清人年谱为依据,统计分析其中277位有确切记载的来自全国各地的士子考取生员时的年龄,得到平均为19.72(虚)岁的结果。生员进学年龄比之前估算的要低得多,提示清代科举人口的数量应重新计算,也为今人对旧时中国教育普及程度的重新认识提供了重要旁证。     

Participatory work with young children: the trouble and transformation of age-based hierarchies

ABSTRACT

This paper explores the ways that participatory work with young children was actually lived in practice, in one early childhood setting. Drawing on an ethnographic study, the paper argues that disruption of age-based hierarchy was key for making space and time for young children’s meaningful participation. Practitioners held a strong, nuanced view of young children’s ‘richness’, rather than defining young children in terms of what they lack. The finished state of adulthood was troubled, with adults seen as fellow ‘emergent becomings’, in the process of learning alongside children. However, despite conscious efforts to deconstruct age-based hierarchy, age and life experience remained troublesome concepts at the nursery. The paper examines tensions and limitations in how far adults were willing to cede control to young children, focusing on the example of care routines. The paper contends that participatory work with children must itself be maintained as a space for inquiry and reflection.     

商周球铃装饰的起源与流向

本文探讨了商周时期球铃装饰的起源和流向,从发生动因、社会背景、参考原型等三个方面讨论了球铃装饰的起源,并指出在东周时期,球铃装饰衰落,球铃转而成为一种独立的装饰品,用来缝缀在服饰上。     

Destruction of microstructure in archaeological bone: a case study from Portugal

Sampling of archaeological human bone may not be justified, contrary to former high expectations regarding adult age assessment based on histomorphometry. The alterations in buried bone as a result of bacterial action are readily visible in the scanning electron microscope (SEM). An understanding of the chemical and structural changes to cortical bone requires work at the level of a few microns. This paper reports on problems encountered during analyses of samples of human bone from Mesolithic (ca. 8000 calbp) shell midden sites at Muge in central Portugal, and the methods used to try and overcome these problems. We believe we have shown that these Mesolithic bones are partly comprised of bacterially reprecipitated mineral, which has had collagen removed, with consequent obliteration of bone microstructure. We conclude that microbial destruction of the structure of archaeological bone can be a serious impediment to analysis of the characteristics of the population represented by those skeletal remains. Copyright © 2001 John Wiley & Sons, Ltd.     

帆船时代福州国际贸易初探

福州是福建省会,帆船时代福州国际贸易是"海丝"文化的重要组成部分,其特色是以朝贡贸易为主。福州官方主导的朝贡贸易始于后汉,发展于唐五代,明清时期福州作为郑和下西洋重要基地和中琉朝贡贸易唯一官定港口而鼎盛。郑和船队驻泊长乐和中琉贸易定点福州,奠定了福州在海外贸易史上的历史地位。国际贸易兴盛带动港口建设,贸易港从福州内河向滨江滨海发展,先后出现东冶港、甘棠港、河口港、太平港、马尾港等名港,成为"海上丝绸之路"的核心港和出发地之一。福州人有精湛的帆船制造技术,熟知天文地理,并掌握高超的航海技术。他们从事海外贸易,穿洋过海、贸迁四方,形成代代相传的海洋文化传统,这是福州国际贸易发展的重要人文因素。     

Age changes in bone microstructure: do they occur uniformly?

Age estimations based on conventional multifactorial methods were compared with trends observed in the internal morphology of bones obtained from high‐resolution µCT. Specifically, average trabecular thickness and number of trabeculae/mm transect were determined in the non‐load‐bearing capitate (hand) and the load‐bearing navicular (foot). The µCT findings reveal age‐related trends but—surprisingly—these correspond only loosely with the ages assigned by conventional ageing methods, and are also not in accordance with what would be predicted from biomechanical considerations: trabeculae tend to be thinner in the (habitually) load‐bearing navicular than in the (habitually) non‐load‐bearing capitate. While the statistically significant correlation between trabecular thickness and number of trabeculae would suggest a compensatory mechanism between these two aspects of microanatomy, they are not correlated with the assigned ages and, importantly, may differ between sexes. Only in females is there an unequivocal trend towards trabecular thickness increase with age. These findings, although unexpected, can be reconciled with recent histological evidence and assumed average activity levels in historical populations. Conversely, changes in trabecular number are less clear‐cut and may be due to the lack of very old individuals in the sample. Nevertheless, the trends observed for trabecular thickness, as well as for trabecular number, seem to imply that the higher incidence of osteoporosis in women could be explained from a structural point of view alone. Copyright © 2005 John Wiley & Sons, Ltd.