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51.
Mariana Brea Alba B. Zamuner Sergio D. Matheos Ari Iglesias Alejandro F. Zucol 《Alcheringa: An Australasian Journal of Paleontology》2013,37(4):427-441
Brea, M., Zamuner, A.B., Matheos, S.D., Iglesias, A. & Zucol, A.F., December, 2008. Fossil wood of the Mimosoideae from the early Paleocene of Patagonia, Argentina. Alcheringa 32, 427–441. ISSN 0311-5518. An anatomically preserved mature stem from the Salamanca Formation (early Paleocene) at Palacio de Los Loros, central Patagonia, Argentina, is described and assigned to Paracacioxylon frenguellii sp. nov. The material was preserved by siliceous permineralization and shows features of the secondary xylem typical of subfamily Mimosoideae. This species represents the oldest record of the genus and of the Leguminosae along the western border of Gondwana, and is the world's second oldest record of Leguminosae wood. The species is characterized by ring-porous to semi-ring-porous vessels that are solitary, in multiples of 2–4 and clustered, simple perforation plates, alternate and vestured inter-vessel pitting, homocellular 1–6 seriate rays, tyloses, crystals and diffuse apotracheal, vasicentric paratracheal and confluent axial parenchyma. Paracacioxylon frenguellii has anatomical similarities to Acacia Miller. The presence of Paracacioxylon frenguellii associated with pulvinate leaves suggests that the legumes might have been a component of mesothermal forests developed along the western margin of the Golfo San Jorge Basin during the early Paleocene. 相似文献
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J.M. Bumsted Mario T. Garcia Barrie M. Ratcliffe John McDermott David S. Macmillan 《国际历史评论》2013,35(4):615-627
R.H. CAMPBELL and ANDREW SKINNER, eds. The Origins and Nature of the Scottish Enlightenment. Edinburgh: John Donald Publishers Ltd., 1982. Pp. vii, 244.£15; JOHN DWYER, ROGER A. MASON, and ALEXANDER MURDOCH, eds. New Perspectives on the Politics and Culture of Early Modern Scotland. Edinburgh: John Donald Publishers Ltd., 1982. Pp. vii, 329. $31.50 (US). Reviewed by J.M. Bumsted FRANCISCO BALDERRAMA. In Defense of La Roza: The Los Angeles Mexican Consulate and the Mexican Community, 1929–1936. Tucson: The University of Arizona Press, 1982. Pp. xii, 137. $14.95 (US). Reviewed by Mario T. Garcia ANTHONY BREWER. Marxist Theories of Imperialism: a Critical Survey. London: Routledge and Kegan Paul, 1980. Pp. 308. $16.95 (Can). Reviewed by Barrie M. Ratcliffe TOBIAS R. PHLLBIN. Admiral von Hipper: The Inconvenient Hero. Amsterdam: B.R. Grüner Publishing Co. Distributed in the US by Humanities Press, 1982. Pp. xiii, 231. $27.75 (US). Reviewed by John Mcdermott STEPHEN MAXWELL, ed. Scotland, Multinationals and the Third World. Edinburgh: Mainstream Publishing in conjunction with Scottish Education and Action for Development, 1982. Pp. 158. $13.75 (US). Reviewed by David S. Macmillan 相似文献
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Paolo Veneri Andre Comandon Miquel‐ngel Garcia‐Lpez Michiel N. Daams 《Journal of regional science》2021,61(1):162-188
This paper provides a comparative assessment of income segregation in cities of 12 countries. We use spatial entropy indexes based on small‐scale gridded income data and consistent definition of city boundaries to ensure international comparability of our segregation measures. Results show considerable variation in the levels of income segregation across cities, even within countries, reflecting the diversity within urban systems. Larger, more affluent, productive, and more unequal cities tend to be more segregated. Urban form, demographic, and economic factors explain additional variation in segregation levels through the influence of high‐income households, who tend to be the most segregated. The positive association between productivity and segregation is mitigated in polycentric cities. 相似文献
55.
Eduard Pop Wim Kuijper Erica van Hees Geoff Smith Alejandro García-Moreno Lutz Kindler 《Journal of Field Archaeology》2016,41(5):603-617
Few sites with evidence for fire use are known from the Last Interglacial in Europe. Hearth features are rarely preserved, probably as a result of post-depositional processes. The small postglacial basins (<300?m in diameter) that dominate the sedimentary context of the Eemian record in Europe are high-resolution environmental archives often containing charcoal particles. This case study presents the macroscopic charcoal record of the Neumark-Nord 2 basin, Germany, and the correlation of this record with the distinct find levels of the basin margin that also contain thermally altered archaeological material. Increased charcoal quantities are shown to correspond to phases of hominin presence—a pattern that fits best with recurrent anthropogenic fires within the watershed. This research shows the potential of small basin localities in the reconstruction of local fire histories, where clear archaeological features like hearths are missing. 相似文献
56.
Alejandro F. Haber 《Archaeologies》2007,3(3):422-428
Alejandro comments on the sense of indeterminacy that pervaded our discussions, notably over what “archaeology” even consists of and over the dilemmas created when the principle of respect for the local community contradicts ethical principles that the archaeologist feels are universal in scale. He tells the story of Carlos Bruch, an early archaeologist in the Catamarca Region, recounting how Bruch portrayed local people and discounted their conceptions of the past, then constructed his own version, contributing to the official version in archaeological discourse. This continues to have ramifications today in the disenfranchisement of local voices in global colonialist projects. Alejandro saw our indeterminancy and quandaries over dilemmas faced by archaeologists as a positive development—a symptom of archaeology changing its pre-theoretical pre-understandings. He emphasizes the importance of local people enacting their own techniques of social memory and their own vocality. 相似文献
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Marco Aurlio Garcia 《Gender & history》1999,11(3):461-474
Departing from some texts that examine women's participation in clandestine organisations in Brazil and Argentina during the 1960s and 1970s, the author discusses possibilities of a different approach towards the historiography of political action, particularly focusing on left-wing parties. Oral history contributes towards recovering subjectivity, a dimension little explored in political historiography. This dimension is usually confined to a private sphere that appears as radically severed from the public sphere. The articulation of these two spaces as well as tensions, conflicts and complementarities between masculine and feminine roles take the history of women away from the ghetto, allowing this new perspective to analyse political action in a complex way 相似文献
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Francisco Alves Paulo Rodrigues Miguel Aleluia Ricardo Rodrigo Catarina Garcia Eric Rieth Eduardo Riccardi 《International Journal of Nautical Archaeology》2001,30(1):12-36
The remains of a coasting vessel were found in a lagoon close to the coast. Four radiocarbon determinations provided a date in the mid-15th century and it has been the subject of several seasons of excavation of CNANS. The excavation strategy is described, as are its surviving constructional details which are analysed with reference to early sources for Portuguese naval architecture. This coaster has constructional features found in ocean-going ships of the Iberian-Atlantic tradition. Its cargo of pottery is one of the most extensive and closely dated from the Age of Discovery and includes 18 forms. 相似文献
59.
Edgar Tello Garcia 《Romance Quarterly》2013,60(4):211-226
The aim of this article carries a comparison between Calderón and Dostoevsky, their semblances and differences. First, I study a relationship toward otherness which is, in both cases, problematic and modern. Departing from Segismundo's complaints when he is imprisoned (saying that he is living a life “worse than animals live”) I analyze two kinds of misunderstandings: a white blindness that respects the Other's difference, and the evil inside its unconcealment. Finally, I discuss Coetzee's Dostoevsky (in The Master of Petersburg) in relation to some of the thesis outlined previously: the necessity of respect when dealing with the space of the other, either in its human form or in a non-human presentation. 相似文献
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This paper studies the endogenous choice of transport technology, “traditional” versus “modern,” by a shipper. Although the “modern” technology is characterized by higher fixed costs and a higher speed of transport, it is chosen for intermediate distances, rather than to long distances. The reason is that, when the shipper switches to the “modern” technology, the industrial firm changes production from the home to the foreign city. Thus, the demand for transport decreases proportionally to the distance between the home and foreign city. For long distances, revenue from transportation becomes so low that the “modern” technology does not break even. 相似文献