pXRF: a study of inter-instrument performance

Integrating portable X-ray fluorescence (pXRF) instrumentation into archaeological investigations has generated as much interest as skepticism because several characteristics of the technique limit analytical accuracy and precision. This paper seeks to explore inter-instrument performance in order to assess the potential pXRF instrumentation has in examining the elemental composition of lithic raw materials. Two pXRF instruments, Delta and Omega models both manufactured by Olympus Innov-X Systems, were utilized to obtain the trace element signatures of five fine-grained volcanic sources and four obsidian sources in the Great Basin. We compared the two portable instruments to a wavelength-dispersive instrument extensively calibrated with geologic standards and to a commercial benchtop energy-dispersive system. Our results suggest that the relationships between the data produced by these different instruments are complex, and as we look to the future of pXRF use in archaeological analysis we argue that that the same strict protocols applied in laboratory-based XRF analyses, involving instrument calibration, evaluation of inter-instrument performance, and comparison to accepted geologic standards, need to be applied in pXRF analysis.     

What do we need to bring about a financial crisis? A long-term look at the development of banking systems,money supply and crises 1850–2010

Financial crises are not a new phenomenon. We had them in the 18th century; there were several well-known ones in the 19th century, not to mention the crisis which started the Great Depression of the 1930s. The recurrence of financial crises in the last decades has revoked a wave of research on the topic among economic historians and economists. Still, it has been difficult for us to really understand how these crises emerge, why they have been so severe recently and why they have occurred so often in the last decades. This paper tries to explain the phenomenon by asking, how is, and how was the volume of money stock determined, and why does scarcity of money, and thus rising interest rate, not check excess borrowing and creation of speculative bubbles - and then emerging crises.     

内蒙古丰镇市双台山“大明洪武二十九年”石刻考释——兼论明代早期北边防御体系的转变

2007年,内蒙古长城资源调查队在调查乌兰察布一呼和浩特段明长城大边时发现一处石刻,刻于明洪武二十九年(1396年),主要记述了兴筑石刻附近长城的时间、修筑者、所修长城的起止位置及长度等,为研究这段明长城的修筑史提供了一份价值极高的文字资料。同时,明代洪武年间北边防御体系的建立与这段长城关系密切,长城与沿边卫所共同构成了点线结合的综合防御体系。永乐时期,明朝调整了北边防御战略,北边防线南撤,这段长城的作用逐渐减弱。     

美国对中国援建坦赞铁路的阻挠

20世纪60年代中期,为摆脱传统殖民主义和南部非洲种族主义的束缚,坦桑尼亚和赞比亚两国提出了修建铁路的计划,并得到中国政府的支持和大力援助。当时,中美处于冷战对抗最为尖锐的时期,美国担心中国借援建铁路获得政治利益,担心中国借机向非洲输出革命,更担心共产主义在非洲扩大影响。为此,美国政府先后使用"拖延"和以大北公路"替代"坦赞铁路的策略,企图阻止中国援建坦赞铁路,以实现将中国阻隔于南部非洲之外的目的。     

20世纪60年代初国家财政支援农业的历史考察

由于"左"的错误和自然灾害,中国在1959～1961年出现了三年经济困难,当时最突出的问题是农业生产遭遇严重挫折,粮食极度短缺。为加快农业生产的恢复,20世纪60年代初,国家制定了"吃饭第一"的方针,要求各行各业支援农业。利用财政手段增加对农业的投入是贯彻这一方针的重要举措。国家财政支援农业的措施主要有两方面:一是减少提取农业剩余;二是直接增加对农业和农村的财政投入。     

From Greece to Babylon: The political thought of Andrew Michael Ramsay (1686–1743)

This paper explores the political thought of Andrew Michael Ramsay with particular reference to his highly acclaimed book called A New Cyropaedia, or the Travels of Cyrus (1727). Dedicated to Prince Charles Edward Stuart, the Young Pretender, to whom he was tutor, this work has been hitherto viewed as a Jacobite imitation of the Telemachus, Son of Ulysses (1699) of his eminent teacher archbishop Fénelon of Cambrai. By tracing the dual legacy of the first Persian Emperor Cyrus in Western thought, I demonstrate that Ramsay was as much indebted to Jacques-Bénigne Bossuet's Discourse on Universal History (1681) as he was to Fénelon's political romance. Ramsay took advantage of Xenophon's silence about the eponymous hero's adolescent education in his Cyropaedia, or the Education of Cyrus (c. 380 B.C.), but he was equally inspired by the Book of Daniel, where the same Persian prince was eulogised as the liberator of the Jewish people from their captivity in Babylon. The main thrust of Ramsay's adaptation was not only to revamp the Humanist-cum-Christian theory and practice of virtuous kingship for a restored Jacobite regime, but on a more fundamental level, to tie in secular history with biblical history. In this respect, Ramsay's New Cyropaedia, or the Travels of Cyrus, was not just another Fénelonian political novel but more essentially a work of universal history. In addition to his Jacobite model of aristocratic constitutional monarchy, it was this Bossuetian motive for universal history, which was first propounded by the German reformer Philipp Melanchthon in his Chronicon Carionis (1532), that most decisively separated Ramsay from Henry St. John, Viscount Bolingbroke, author of another famous advice book for princes of the period, The Idea of a Patriot King (written in late 1738 for the education of Frederick Lewis, Prince of Wales, but officially published in 1749).     

Measuring Paleoindian range mobility and land-use in the Great Lakes/Northeast

Distance and direction to source data were compiled on the main toolstones employed at 83 Paleoindian sites with concave-based points (ca. 11,000–10,000 B.P.) from across the recently deglaciated Great Lake-Northeastern area of North America. These data were used in order to more rigorously evaluate several much debated ideas about annual range mobility scale and land use patterns and how they changed over time as these groups colonized and settled into the area. Movements are significantly biased to north–south axes, strongly suggesting these represent mainly seasonal moves and procurement of toolstones during regular travels rather than by specialized task groups. Means of comparing the scale of range mobility to ethnographic norms are explored and the results clearly show that these groups, especially the earliest occupants, had large annual range mobility scales and distinctive patterns of land use that are rarely seen or approached historically. They had to have been intensively targeting widely spaced but relatively abundant resources on the landscape. The only ethnographic groups who come close to such patterns historically were all caribou hunters, a perspective consistent with the idea these groups regularly exploited that resource. As long suggested, these land use patterns are probably related to the colonization of new lands in which there were little or no existing populations.     

Lake levels,mobility and lithic raw material selection and reduction strategies: A Great Lakes case study

Abstract

It has recently been proposed that lowered lake levels after 4250 BP broadened opportunities for mobility and interaction patterns among hunter-gatherer populations in the Saginaw drainage and in Michigan more broadly (; ). Here, data are presented on chipped stone reduction strategies as reflected in two site assemblages in Bay City, Michigan (20BY28, 20BY387) that bridge this key point in time. The earliest Late Archaic components of these sites, occupied during the higher than modern post Nipissing recession ca. 3200 BP, are typified by on-site reduction of local cherts, often utilising a bipolar reduction strategy. Subsequent uses of the area largely shifted to lower elevations. The more recent site components contain both more diverse projectile styles, many of which can be linked with Ontario types, and higher occurrences of non-local raw materials, specifically Onondaga chert apparently arriving at the site as preforms. The last use of these sites occurred during the Late Woodland, also during lower water levels approaching modern, and reflecting the highest use of Onondaga chert. We suggest that these changes resulted from shifting mobility and exchange patterns, facilitated in part by lowered post Nipissing water levels.     

Trees as technology: planting shelterbelts on the Great Plains

The turbulent climate of the Great Plains made windbreaks necessary for the protection of settlers and their livestock and crops. At first individual farmers tried to plant their own shelterbelts but with little success. The US Forest Service, with the establishment of the Bessey tree nursery, in 1902, and the field planting of the Nebraska National Forest, developed the expertise to carry out farm forestry on the plains. In 1934 the Forest Service undertook the Prairie States Forestry Project, an eight‐year program to plant shelterbelts from Canada to Texas, in response to the Dust Bowl and the Great Depression. These shelterbelts were a technological solution to environmental and social problems. As they grew, successful shelterbelts developed forest characteristics and served as habitat for birds and wildlife. As systems that were both technical and ecological, shelterbelts embodied a confluence of culture and nature in the technology that farmers and foresters used to engineer a more suitable environment for American society on the Plains.     

The Rise and Fall of Alexander the Great – The Need for Medical Analysis: Reply to Commentaries

Alexander the Great died in 323 B.C. from an unknown cause. By elucidating the nature of his death, we can better interpret various aspects of Alexandrian history. Alexander’s death may have ensued from the sequelae of a congenital scoliotic syndrome. It would therefore be of significance to note that one of the greatest leaders in history who conquered much of the then known world may have been suffering from a physical disability.