中国南方地区宋元时期的仿古青铜器

在中国南方地区曾发现过多处宋元时期窖藏,并出土过数量可观的仿古青铜器;这些窖藏大都有相关的纪年,而且其中某些仿古青铜器本身就带有制作年号,提供了宋元仿古青铜器重要特征的识别依据,甚至可作为它们断代的标尺。本文即从这些有一定代表性的,且来源途径可信的出土仿古青铜器着手,以考古类型学的方法,梳理分析其特点。以期对传世的宋元以后仿古青铜器的断代提供参考。     

Medullary Bone in Goose Remains: A Reliable Indicator of Domestic Individual in Non‐Breeding Regions

The ideal indicator of domestic individuals is the presence of traits that must appear in the first generation of the domestic lineage. Most wild geese are migratory, breeding in the subarctic zone and wintering in the temperate zone. If goose remains from archaeological sites in a non‐breeding region are from individuals shown to have died during the breeding season, the bones are likely to be from domestic birds. Medullary bone is secondary woven bony tissue formed in the marrow cavity of breeding female birds. It develops 1 or 2 weeks before the first egg is produced and disappears 1 or 2 weeks after egg production. As wild geese remain in their breeding regions for about 3 months after egg production, medullary bone would be expected to disappear before birds arrive at the stopover and wintering areas. Therefore, the presence of medullary bone in goose remains found in non‐breeding regions would be a reliable indicator of domestic birds. In this study, we examined goose (Anserini spp.) remains from 15 archaeological sites in Japan (3400 bc to 1912 ad ) using binocular observation and histological analysis. We found medullary bone in two femora from the Oranda–shokan–ato site (1650–1850 ad ). The results indicate that the two femora were from domestic geese. By using secondary bone as an indicator of the domesticity of geese, knowledge regarding the origins of domestic geese can be expanded, and the morphological and/or genetic changes, as well as the domestication process, can be revealed. According to the literature, domestic geese were kept in Japan from the early eight century ad and were popular after the 17th century ad . The scarcity of medullary bone in the samples can be explained by the small number of domestic geese in Japan and/or by butchering practices that excluded the eating of breeding female geese. Copyright © 2013 John Wiley & Sons, Ltd.     

Artificial cranial deformation in South America: a geometric morphometrics approximation

The bioarchaeological record of South America is characterized by the high frequency of individuals with a variety of cranial deformations concentrated in three areas (North-West, Central-West and South) of this subcontinent. The general purpose of this paper is to study the variation in artificial cranial deformation in several regions of Central-West and South of South America. Cranial variation related to artificial deformation of human cranial remains is analyzed by means of geometric morphometrics and multivariate statistic methods. The results of this work show that there are no large differences in variation among states, chiefdoms and bands of hunter-gatherers. The pattern of variation observed in cranial deformation among regions can be interpreted principally according to the chronological and spatial distribution of the cranial samples analyzed.     

Becoming (ethnic minority) teenagers: a practice study of emotional well-being at a Danish sports school

This article explores how everyday school life interacts with students’ practices of ‘becoming teenagers’ at a Danish school, analysing how age and ethnicity intersect with emotional well-being. The article builds on an ethnographic study at a public sports school following ethnic minority and majority students in two school classes from the fifth to seventh grades. Taking a practice approach, the article first analyses school as a social site before turning phenomenological attention to experiences and expectations of becoming teenagers, focusing on the experiences of ethnic minority students. The article addresses how school as social site constituted by discursive, material and social arrangements shapes a normative linear process of becoming at school, that is, becoming a responsible, healthy, Danish citizen. Consequently, dissonance between embodied being and expected normality affects the emotional well-being of ethnic minority students, whose transnational practices are constrained within a national practice architecture.     

Rethinking voter identification: its rationale and impact

Voter ID is a contentious issue in electoral democracies worldwide. This article surveys arguments for and against voter ID in the Australian context, presenting data from the first election in the country to require it. The data demonstrate a differential impact on regional electorates and on electorates with concentrations of Indigenous voters. While the law in question (from the State of Queensland) was moderate in its overall impact, confusion created by it may have suppressed turnout. The law has since been repealed, but voter ID now has the support of a conservative majority on the Commonwealth Parliament’s electoral matters committee. We conclude that voter ID is not a solution to eliminating fraud, but an additional bureaucratic layer upon the ritual of casting a ballot and a hurdle with unintended consequences.     

Is X-ray diffraction able to distinguish between animal and human bones?

The possibility of determining the human or animal origin of bones from the lattice parameters of their inorganic bioapatite phase, when subjected to a high temperature treatment using the powder X-ray diffraction (XRD) technique, has been explored on a wide number of specimens. Forty-two animal bones were treated in a furnace at 1100 °C for 36 min and compared to 53 cremated human bones from a range of ancient necropolises. The X-ray diffraction patterns of bioapatite were simulated using both monoclinic P21/b and hexagonal P63/m structures to verify any occurrence of phase transformation and any difference in the lattice parameters due to the model. It was determined that the differences between the a-axis and c-axis of the monoclinic and hexagonal lattice were unimportant. Some outlying values were revealed to be caused by the presence of chlorine ions diffused into the apatite structure increasing its average unit cell values. Nevertheless, our results clearly show that in terms of lattice parameters the variability of human specimens are completely overlapped by the non-human variability making the use of XRD in order to distinguish animal from human bones questionable.     

Accurate sex identification of ancient human remains using DNA shotgun sequencing

Accurate identification of the biological sex of ancient remains is vital for critically testing hypotheses about social structure in prehistoric societies. However, morphological methods are imprecise for juvenile individuals and fragmentary remains, and molecular methods that rely on particular sex-specific marker loci such as the amelogenin gene suffer from allelic dropout and sensitivity to modern contamination. Analyzing shotgun sequencing data from 14 present-day humans of known biological sex and 16 ancient individuals from a time span of 100 to ∼70,000 years ago, we show that even relatively sparse shotgun sequencing (about 100,000 human sequences) can be used to reliably identify chromosomal sex simply by considering the ratio of sequences aligning to the X and Y chromosomes, and highlight two examples where the genetic assignments indicate morphological misassignment. Furthermore, we show that accurate sex identification of highly degraded remains can be performed in the presence of substantial amounts of present-day contamination by utilizing the signature of cytosine deamination, a characteristic feature of ancient DNA.     

Sex identification of ancient DNA samples using a microfluidic device

A microfluidic device has been developed for the sex identification of ancient DNA samples and works by manipulating liquids within an environment of micrometer dimensions. In this work a range of microfluidic DNA extraction methods were evaluated for their compatibility with ancient DNA samples, and the use of streptavidin-coated super paramagnetic particles to isolate biotin-labeled abasic sites within damaged DNA was shown to be the most reproducible. Polymerase chain reaction-based DNA amplification was possible on the microfluidic device when less than 50 pg of template DNA was added. As a proof-of-principle, powdered bone samples were analysed using the integrated methodology developed. Following conventional capillary gel electrophoresis, two out of the three samples produced positive amplification results and were successfully identified as female. These sex identifications were corroborated by independent Amelogenin, anthropological and Y chromosome analysis. The work reported here is the first step in the development of a complete miniaturized microfluidic system that would enable on-site ancient DNA analysis.     

Identification of Suspected Horn from the Queen Anne's Revenge (1718), North Carolina,USA

Infrared spectroscopy can be a valuable tool for conservators and archaeologists to help identify archaeological artefacts. We present a case‐study on the identification of an artefact recovered by North Carolina Department of Cultural Resources (NCDCR) Underwater Archaeology Branch from an early‐18th‐century shipwreck (31CR314). The wreck is assumed to be the remains of Queen Anne's Revenge, which sank off the North Carolina coast in 1718. A sample of the artefact was analysed by infrared spectroscopy to identify it. Prior to spectroscopic analysis it was speculated that the sample could be animal horn or leather. © 2011 The Authors     

SYSTEM IDENTIFICATION OF LANDFILL SEISMIC RESPONSE

Assessment of landfill seismic response necessitates the availability of reliable dynamic material properties. During the past decade, geophysical surveys and computational studies have been conducted to investigate the seismic response of the Operating Industries, Inc. (OII) landfill in Southern California. In this paper, a survey and summary of available research results is presented. In addition, a set of Oil input-output seismic records during six earthquakes is thoroughly analysed. Spectral analyses are conducted to shed light on the landfill dynamic response characteristics. A simple shear beam model is found to be useful in modelling the landfill resonant behaviour. System identification techniques are employed to estimate the landfill stiffness and damping properties. These properties are defined by minimising the difference between computed and recorded acceleration response spectra at the landfill top. The identified stiffness properties are found to be near the lower bound of those documented through geophysical measure-ments. Identified damping of about 5% (at resonance) is within the range of earlier investigations. Comparisons of the computed and recorded accelerations show: (I) effectiveness of a linear viscous shear beam model in simulating the landfill dynamic behaviour, for the recorded small to moderate levels of dynamic excitation (up to 0.26 g peak lateral acceleration), and (ii) potential of the employed system identification procedure for analysis of input-output seismic motions.