魏晋南北朝玉佩研究

魏晋南北朝玉佩自发现以来,学术界对其性质和组构样式的判断皆不甚明了。近年南京仙鹤观东晋玉佩的完整发现,为研究其结构与性质提供了详实的研究资料。本文以此为基础,结合国内各地玉佩的发现情况及历史文献资料,分析魏晋南北朝时期玉佩发展、演变的历史原因,并试对玉佩构件进行了初步的复原研究。     

Blank Concerns: Issues of Skill and Consistency in the Replication of Scottish Later Mesolithic Blades

Skill is central to the identification of the individual within lithic analysis. Modern replication tends to focus on the proficient flintknapper, and emphasises complex, technically demanding implements and high quality raw materials. Yet, acquiring lithic skill is a universal process that manifests itself in various ways depending on technological strategy and raw material. This paper presents the results of a programme of experimental replication that explores notions of consistency and identity. Based on Mesolithic blade technology, using direct percussion reduction and variable pebble resources, it compares knappers with different experience and identifies some salient parameters of individual performance.     

Rock type variability and impact fracture formation: working towards a more robust macrofracture method

Investigations into the development of weapon systems are increasingly important in archaeological debates about human evolution and behavioural variability. ‘Diagnostic’ impact fractures are key, but controversial, lines of evidence commonly used in such investigations. In 2009 a series of experiments was initiated to investigate the processes associated with macrofracture formation specifically focussing on the taphonomic factors affecting the formation of ‘diagnostic’ impact fractures (DIFs). This paper adds to that experimental data set with macrofracture results from recent knapping experiments investigating rock type variability and DIF formation. These results show that rock type variation plays less of a role in DIF formation than variables related to use and lithic taphonomy. The collective results of this experimental series show that the location, co-occurrence, type and proximity to retouch on a tool are all important means of distinguishing between weapon and non-weapon related DIFs. Collectively these macrofracture patterns are more important in diagnosing weapon components than any one ‘diagnostic’ impact fracture is alone. Overall, these experimental studies are showing that background ‘noise’ in the form of non-hunting related impact fractures, exists in many macrofracture results and that much work remains in securing the analytical robusticity of the method. The paper concludes that the macrofracture method is not a stand-alone method, but when used with caution and in conjunction with other lines of evidence it is a useful, time-efficient, tool for generating assemblage-level use-trace data.     

The Science of Cupules

As the apparently simplest of all petroglyphs, cupules are shown to be scientifically and culturally very complex phenomena. Despite being the most common motif in rock art, their meaning or purpose remains largely unknown. This paper explores their physical and production properties, including their technology, taphonomy, morphology, biomechanics and energy investment involved, leading to the formulation of the production coefficient. The various quantifiable factors involved in cupule production are examined, including the phenomenon of kinetic energy metamorphosis (KEM). The tribological products, tectonite laminae, a new geological phenomenon first identified in cupules, offer the possibilities of developing a direct dating method as well explaining several related geological features.     

Recent developments in the analysis of lithic artifacts

A review of recent research on lithic technology and functional analysis is presented. Our perception of the state of the art is based on a review of the literature published during the past three years and on the topics that were covered at conferences and workshops on lithic analysis. While the goals have essentially remained the same since the turn of the century, concerns with chronology and the classification of lithic artifacts have given way to studies that treat stone implements as products of a dynamic system of human behavior. In order to understand stone artifacts and the people that made and used them, archaeologists must understand theprocesses involved in the acquisition, production, exchange, and consumption of lithic artifacts. In the past ten years, experimental studies involving the manufacturing and use of stone tools have been integrated with studies of refitted or conjoined lithic artifacts and microwear analysis. The result is a much more dynamic view of the variability in assemblages of lithic artifacts. In this review, we focus on replication and technological analysis of chipped stone artifacts and microwear analysis, and consider the implications of this research.     

Laboratory Notes,Laboratory Experiences,and Conceptual Analysis: Understanding the Making of Ohm's First Law in Electricity

Georg Simon Ohm's work in the field of electricity led to what is now considered to be the most fundamental law of electrical circuits, Ohm's Law. Much less known is that only months earlier, Ohm had published another law—one that differed significantly from the now accepted one. The latter entailed a logarithmic relation between the length of the conductor and a parameter that Ohm called “loss of force.” This paper discusses how Ohm came up with an initial law that he felt compelled to correct a few months later. We analyze Ohm's publication as well as his laboratory notes, relating them to our own laboratory experiences while using the replication method to study his work. We also discuss the conceptual background of Ohm's work. We conclude that he was significantly influenced by French studies in the field of electricity, most notably the ones by Charles Augustin Coulomb.     

Contact tinning: A millennia‐old plating technology

Tinning copper and copper alloy objects by putting them into (electrical) contact with metallic tin in a boiling aqueous solution of potassium hydrogen tartar is a very old technique, but is nowadays almost forgotten. It was possibly invented by the Gauls and used intensively until the 20th century. This paper first briefly recounts the history of this galvanic process. To understand better the parameters influencing the thickness of the coat and thus to reconstruct this ancient technique, laboratory tests were undertaken by varying a series of parameters. The results are then presented with a short interpretation.     

A Better Shade of Black: Effects of Manufacturing Parameters on the Development of Ancient Black Bronzes*

Copper alloys with controlled contents of Sn, Ag and Au were treated with methods and solutions that mimic those used in ancient and traditional procedures for the production of black bronze. Examination of the resulting patinas with colorimetry, SEM–EDS, TEM, Raman spectroscopy and XRD revealed no systematic differences according to the fabrication method, whereas patina homogeneity and colour in those alloys that did not contain precious metal were affected by superficial work. Patina microstructure determines adherence and coverage, and depends upon the solution used irrespective of the alloy composition, but the colour of the patina is mainly related to the alloy composition. Gold promotes the development of cuprite, slowing the oxidation to tenorite in the corrosion process. Gold additions produce a more uniform patina as well as a desirable blue–black tone, which is likely to have been a factor in alloy selection.     

基于集对分析法（SPA）的中国旅游经济系统脆弱性测度研究

文章运用集对分析法,从旅游经济系统的敏感性和应对性两个方面构建指标体系,测度1983—2011年间中国旅游经济系统的脆弱性。研究表明：我国旅游经济系统整体上敏感性呈上升趋势、应对性呈上升趋势、脆弱性呈下降趋势;我国旅游经济系统敏感性具有高弹性,但其弹性在逐渐降低;近期,我国旅游经济系统脆弱性出现了翘尾现象,说明我国旅游经济系统发展中矛盾在增加。基于实证研究结果,文章认为：旅游经济系统脆弱性可以分为“内生性结构累积式脆弱”和“外生性环境胁迫式脆弱”两种类型;旅游经济系统脆弱性的深层压力,来源于“内生性结构累积式脆弱”的不断积累;利他性的工具性旅游产业政策,在一定程度上会加大后期旅游经济系统的脆弱性风险。     

Julius Drachsler's Intermarriage in New York City

Abstract

Julius Drachsler's 1921 book, Intermarriage in New York City, examined 171,356 individual marriage license applications from New York City in the years 1908–12. The author found little intermarriage across social lines among immigrants but a considerable amount among their U.S.-born children. This study replicates Drachsler's by taking a 1% sample (N = 1,714 cases) of the same set of marriage license applications for the same years. The replication results show that Drachsler correctly found an increasing trend to intermarriage between the first and second generations, and with close to the same proportions as Drachsler's work. The replication study of New York City marriage licenses is also consistent with the results from a 1910 sample of married couples living in New York City, taken from the Integrated Public Use Microdata Sample. The replication study differs from Drachsler's reported findings on the extent of intermarriages across social lines of nationality and race, mainly due to the idiosyncratic way that Drachsler defined those two constructs. The New York City marriage license files offer the researcher further opportunities to pose and answer questions about intermarriage.