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1.
Juan‐Pablo Olaberria 《International Journal of Nautical Archaeology》2014,43(2):351-368
Did ancient Mediterranean shipbuilders at the turn of the first millennium have methods to pre‐design the shape of their hulls prior to the construction of the ship? If so, can these methods be identified? This paper proposes that ancient shipwrights were in possession of such design methods, based on geometry, that are comparable to the medieval and post medieval hull‐design procedures called whole‐moulding. These methods are well suited to be transformed into rules‐of‐thumb, therefore allowing the storage and transmission of accumulated knowledge. The implications of this proposal on the present understanding of the transition from shell‐ to skeleton‐building are explored. 相似文献
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Filipe Castro 《International Journal of Nautical Archaeology》2007,36(1):148-154
Methods of designing the bottom of ship's hulls were only a small part of the process of building a frame-based ship in Portugal in the 16th and early 17th centuries, but they deserve a careful look. Using a number of geometric algorithms that were already well-known to Italian shipwrights of the 15th century, Portuguese shipwrights obtained the co-ordinates of the turn of the bilge points of the central, pre-designed, frames without the need for making drawings.
© 2006 The Author 相似文献
© 2006 The Author 相似文献
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在19世纪末和20世纪初的美国新式中产阶级形成时期,作为其中的一个重要白领阶层,文官群体的优势日渐显露。其一,由于文官职业和收入的稳定,使其成为美国中产阶级中颇具稳定性的职业群体;其二,由于文官掌握一定的权力,使其成为美国中产阶级中颇具政治影响力的职业群体;其三,由于文官兼有政府雇员和利益集团的双重身份,使其成为美国中产阶级中颇具社会地位的职业群体;其四,由于文官对权本位的追求,使其成为美国中产阶级中颇具独特文化价值观的职业群体。不仅如此,文官群体所具有的这些优势,又使其在第二次世界大战后逐渐演变成为美国中产阶级的主体。 相似文献
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Qualitative investigations of pigments and dyes using micro X‐ray fluorescence spectrometry (micro‐XRF) and visible spectrophotometry (VIS) are suitable non‐destructive methods for the characterization of different colorants in art objects. In this study, several rare coloured engravings from the work of Albrecht Dürer—and, in addition, from the work of Cornelis Cort, Servatius Raeven and Johannes Sadeler—were investigated. The analyses result in specific palettes of colours that were used by different artists or in different workshops for the coloration of engraved images. Starting from these different palettes, it is possible to distinguish coeval colorations that were added in the 16th century from those that were carried out at a later date (e.g., the 19th century). 相似文献
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The rapid expansion of non‐ferrous metallurgy in the late Middle Ages (14th–15th centuries) enhanced ore demand, which was supported by mining intensification. Metallurgical workshops developed various supply strategies based on geological, political and economic constraints. This is particularly true for the Pyrenean multi‐metals workshop of Castel‐Minier (Ariège, France), where recent excavations unearthed an exceptional corpus of non‐ferrous ores. A specific analytical methodology combining micro‐Raman spectroscopy and environmental scanning electron microscopy with energy dispersive X‐ray (ESEM‐EDX) was set up to study these artefacts. This composite methodology permitted the fast characterization of both mineral and gangue as well as a discussion of their economic potential. Ores identified were compared with ancient mines in neighbouring mining districts in order to sketch a geography of the mineral resources available to medieval metallurgists. Moreover, a chrono‐stratigraphic study of ore distribution in Castel‐Minier revealed the supply strategies, technological choices as well as spatializing of copper and lead metallurgies. 相似文献
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EDS, X‐ray fluorescence, Raman spectroscopy, thermal expansion–shrinkage measurement and scanning electron microscopy were applied to determine the elemental components, structural phases and glazing temperatures of the transparent glazes, blue underglaze and overglaze tam thai (including gold‐like lustre) decorations from the 15th‐century Vietnamese porcelains/stonewares found at the Chu Ðâu–My Xa kiln site and in the Cù Lao Chàm (Hôi An) cargo. The ancient technology for colouring the glazes is discussed. The various blue tones in the underglazed décor result from cobalt‐containing manganese ore, with the intentional addition of iron oxide. The overglaze copper‐green and the gold‐like lustre were obtained by dispersing copper in lead‐based glass. The red colour was made using hematite dispersed in lead‐rich flux. 相似文献
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Henri Myrttinen 《Oceania; a journal devoted to the study of the native peoples of Australia, New Guinea, and the Islands of the Pacific》2013,83(3):208-220
On gaining independence in 2002 after a protracted struggle against Indonesian occupation, the sovereign Timor‐Leste state began to assert its sovereignty in a range of discursive and expressive media. These assertions developed a distinct ‘language of stateness’ that is the focus of this article. This East Timorese expression of state sovereignty draws heavily on the legacy of the Timorese resistance struggle and on a variety of other sources of symbolic power such as flags, buildings, logos, and uniforms. Yet these efforts have been contested by a range of non‐state actors in Timor‐Leste and the shape that this language of stateness has taken now evokes complaints from martial arts groups (MAGs), ritual arts groups (RAGs), and veterans' organisations that seek to ‘become like the state’ themselves, and who also employ a ‘national language of stateness’ in the form of flags, graffiti, and official buildings. While not challenging the idea of an independent East Timorese state per se, these groups question the prerogative of the state to use and define the language of stateness. In this article I explore the way the state and its challengers use ‘languages of stateness’ and how this shapes their ambivalent stance vis‐à‐vis each other, with both sides often drawing upon a discourse of the fulfilment of the millenarian promises that have for a long time been tied to the achievement of independence. 相似文献
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Raymond M. Taylor 《The Historian; a journal of history》2012,74(3):552-553
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历史研究需要进行科学分期,由于所研究的对象不同,因而分期的标准也不尽相同。20世纪中日俄(苏)三国关系史可分为7个时期。1900-1917年为两强凌-弱时期;1917-1931年为三国关系初次变化时期;1931-1945年为战争笼罩三国时期;1945-1949年为三国关系特殊时期;1949-1960年为三国关系再次变化时期;1960-1972年为敌友关系相互转变时期;1972-1991年为三国关系终趋正常时期。 相似文献
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Matthew J. Kuiper 《Muslim world (Hartford, Conn.)》2014,104(1-2):71-88
In recent years, the term “proto‐Sunni” has become common in scholarship on the early centuries of Islam. Drawing on categories developed by Peter Berger, this study seeks to move toward a more inclusive portrait of the early proto‐Sunni movement and a more organic understanding of the movement's success. It argues that owing to the erosion of several of the “plausibility structures” of earliest Islam, three tendencies emerged among the proto‐Sunnis between the early 8th and mid‐9th centuries C.E.: proto‐Sunnis as traditionist ?ulamā?, proto‐Sunnis as pious ascetics, and proto‐Sunnis as volunteer holy warriors. The prestige acquired through their activities in these areas enabled the early proto‐Sunnis to “objectify” and “legitimize” new plausibility structures which would prove decisive to an eventual Sunni consensus. 相似文献
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Samuel Mark 《International Journal of Nautical Archaeology》2012,41(1):84-93
A review of the Khufu I vessel (c.2566 BC) and contemporary Egyptian iconography (c.2613–2345 BC) suggest this vessel was originally fitted with six pairs of quarter‐rudders, instead of one pair. Furthermore, quarter‐rudders may have been mounted on knob‐shaped thole‐pins, instead of crossbeams. The iconography also suggests that each quarter‐rudder was fitted with a loom‐line and specialized grommet, and rowers may have used a similar system to mount their oars. Finally, a recently published depiction of Sahure sailing a boat may show an anchor secured on the stern deck. © 2011 The Author 相似文献
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Alex W. Barber 《Parliamentary History》2013,32(2):293-316
This article engages with recent work on the nature of the press in the late 17th and early 18th centuries that has emphasized that print, and more specifically printed news, came to dominate religious and political affairs. Recent scholarship has suggested that political elites embraced the new opportunities that the lapse of licensing (1695) offered by reading and buying newspapers and periodicals in ever greater numbers. Inherent in this portrayal of news culture is a sense that censorship had little effect on news‐writers. Journalists, so it is claimed, were left alone to pursue their trade free from any consistent interference. This article, by contrast, argues that scribal news – handwritten newspapers – continued to be important in the 18th century. The reason for the survival of scribal news‐writers such as John Dyer can be found, I argue, in understanding the complex relationship between press and parliament. Far from embracing the press, most members of parliament were, in fact, reluctant to allow unhindered publication of their discussions. While recognizing the importance of news to political debate, this article insists that the continued production of scribal news is indispensable for understanding both the nature of censorship and the power of the press in post‐licensing England. 相似文献
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Heidi Bauer‐Clapp 《International Journal of Osteoarchaeology》2009,19(6):749-751
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Anne L. Schneider 《政策研究杂志》2012,40(2):193-210
This analysis of the patterns of change in the use of incarceration by the American states from 1890 through 2008 focuses on multiple themes particularly relevant to an understanding of policy arenas in which the social constructions of target populations play an important role. Specifically, the study examines whether the states have adopted more similar incarceration levels over time (converged), whether they tend to change in the same direction at the same time (synchronous change), and whether they tend to stay in the same relative positions vis‐à‐vis one another, such that the historical policy position has long‐term implications for later policy positions (“feed‐forward” effects). The results indicate that, in spite of a century of social, political, and economic integration, the policy positions of the states have not exhibited a sustained convergence toward a common level of incarceration, but have undergone cycles, with some periods of convergence followed by periods of divergence. Change has generally been synchronous—as states tend to move in the same direction at the same time as if propelled by national forces even though incarceration levels are determined by state and local policy and the use of discretion by criminal justice officials. The results also indicate a profound “feed‐forward” effect in that the position of the states vis‐à‐vis one another historically has substantial predictive power for their position in subsequent years. 相似文献
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Ian Wood 《Early Medieval Europe》2020,28(1):154-157
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Shipwrecks and Provenance: in‐situ timber sampling protocols with a focus on wrecks of the Iberian shipbuilding tradition SARA A. RICH,NIGEL NAYLING,GARRY MOMBER and ANA CRESPO SOLANA 70pp., 23 colour illustrations,Archaeopress, Oxford, 2017, £20 (sbk) or free to download,ISBN 978‐1784917173
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PAULA MARTIN 《International Journal of Nautical Archaeology》2018,47(2):496-497
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JULIAN WHITEWRIGHT 《International Journal of Nautical Archaeology》2019,48(2):529-531