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121.
A criterion is proposed for deciding whether, after a damaging mainshock, a bridge can still be open for either emergency or ordinary traffic. The criterion is based on the comparison between the collapse risk of the mainshock-damaged structure and the pre-mainshock risk of the intact structure. The approach requires fragilities for multiple damage states for the intact structure, and transition probabilities from these states to collapse for the damaged structure. The aftershock risk decreases with time, hence a decision for reopening might have to wait until the risk level goes down to an acceptable value. A realistic application demonstrates the approach. 相似文献
122.
Francesca da Porto Catarina Costa Claudio Modena 《Journal of Earthquake Engineering》2013,17(6):739-758
This article focuses on the effects of the earthquake which struck the Abruzzo region (Central Italy) on April 6, 2009, causing considerable damage to many ancient buildings, particularly churches. During the emergency after the earthquake, many churches and other historical monuments (towers, city walls, large town houses, etc.) were surveyed, according to first-level damage survey forms for Cultural Heritage buildings, by multidisciplinary working groups composed of experts from several Italian institutions (Universities, Ministry for Cultural Heritage, Fire Brigade, etc.). This article presents a statistical study on the information collected by the University of Padova during the surveys, which was later inserted and organized in a database, and illustrates data on damage assessment of the buildings in question. It also presents an intuitive overview of the seismic effects on several churches, allowing not only better understanding of the response of these structures to this particular earthquake, but also correlating data on it with its effects on the churches. 相似文献
123.
Luciana Sianto Sérgio Augusto de Miranda Chaves Isabel Teixeira-Santos Paula Alves Pereira Ricardo Miguel Godinho David Gonçalves Ana Luísa Santos 《Archaeological and Anthropological Sciences》2018,10(1):75-81
The period of European maritime expansion that started in the fifteenth century had a great impact on trading, on human migrations and consequently in the dispersion of infectious diseases. Portugal was at the core of this expansion; however, studies about parasitic infections, especially helminths, are lacking. This study aims to help reduce this gap presenting the results of microscopic analysis of soil sediments collected from the São Jorge churchyard of Sarilhos Grandes (Montijo). Consecrated in the fourteenth century AD, it remained as a burial ground until the nineteenth century. Soil samples collected from the pelvic girdle of five adult individuals and samples taken as control were analysed under the microscope after current conventional methodological procedures were undertaken. Eggs from Ascaris lumbricoides were identified. Also eggs of trichostrongyle type species were identified in two individuals and may represent the first report in archaeological European samples. Food remains include potato and rice starches, muscle fibres, bivalves, pollen grains and fungi spores. The stratigraphy interpretation together with potato findings put the oldest skeletons to a chronology around the sixteenth century AD. These results are consistent with historical sources that documented the prominence of Tagus river nearby villages in maritime expansion. 相似文献
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125.
Paula L.W. Sabloff 《Journal of Archaeological Method and Theory》2018,25(2):426-452
Approaching warfare in pre-modern states from the perspective of risk reduction, we see that royal marriage was one strategy rulers used to reduce the probability that they would lose a war. Judicious marriage exchanges intensified and prolonged patron-client relations between rulers or between rulers and societal elites. Clientelism could affect the size and composition of their armies. The more warriors and troops one could field, the greater the chance of not losing a war (Otterbein 2004; LeBlanc 2006). Examination of eight pre-modern states suggests that their rulers used the same patterns of wife exchange even though most states developed independently. Marriage secured long-term patron-client relationships, which they used to support their military efforts. When rulers married their kin or married them to rulers outside the system (“foreigners”), they did not gain military support. Analysis of these marriage-military patterns reveals several characteristics of pre-modern states. First, marriage alliances helped rulers form networks of support that helped them win wars. Therefore, marriage—and by extension, royal women—is a key component to the study of warfare and a critical mechanism of network formation, as Blanton et al. (1996) write. Second, alliances were based on a different organizing principle from Levi-Strauss’ tribal societies, for rulers selected main wives (for themselves or their kin) based on relative rank rather than particular kinship ties. Third, marriage alliance reveals an important difference between alliance and patron-client relationships, a distinction that is often blurred in the archaeological literature. 相似文献
126.
Rubh’ an Dùnain: a multi‐period maritime landscape on the Isle of Skye,Inner Hebrides,Scotland 下载免费PDF全文
A non‐intrusive survey of this headland on Scotland's western seaboard reveals evidence of maritime activity from prehistory until the recent past. The siting of an Iron Age dun appears to have exploited a natural creek to bring boats to a secure landing‐place. Access was enhanced by a cleared channel, and two docks with adjacent nousts constructed. A stone‐revetted canal was later driven to the loch beyond, and quays built on either side of the entry. A 12th‐century boat‐timber was found in the loch. Later the canal was widened, and finally blocked. The sequence of development, and associated dating, merits further research. 相似文献
127.
Rui Marques Paula Lamego Paulo B Lourenço Maria L Sousa 《Journal of Earthquake Engineering》2018,22(9):1590-1625
This paper presents a study on the techno-economic efficiency of seismic strengthening techniques for old residential buildings, with application to construction typologies in Lisbon (stone masonry and “Placa” buildings). A comprehensive review on strengthening techniques and implications for the seismic behavior is made. Different strengthening schemes are implicitly simulated within equivalent frame models of the representative buildings. Then, pushover analysis is applied in order to compare the seismic performance of the buildings, before and after strengthening. A cost-benefit analysis of the strengthening solutions is finally performed, comparing the economic benefit gained by reducing the seismic damage, against the intervention cost. 相似文献
128.
129.
Paula Mota Santos 《International Journal of Heritage Studies》2016,22(2):131-144
AbstractThe paper analyses a group of photographs of the old city of Porto, a UNESCO World Heritage Site. The photograph is used as a medium to elicit the ways different social agents experience and relate to Old Porto as a heritage place. The photographs were collected as part of a wider research project on the way sense of place of Porto’s old city was differentially constructed by local inhabitants, tourists and the City Council. Illustrated postcards were also analysed. The findings demonstrate the usefulness of this particular form of image-based ethnographic research in understanding the forms in relation to a heritage lived-in place. 相似文献
130.
In 1877, Barlow described a ten-year-old boy with right hemiplegia and aphasia, quick recovery of language function, and subsequent left hemiplegia and aphasia, who was shown to have symmetrical left and right Broca's area lesions at autopsy. The report of this case motivated many writers in the second half of the nineteenth century to develop theories on localization, laterality, equipotentiality and development of specialization, recovery of function, and the role of the right hemisphere (see Finger et al., 2003, for review). This paper presents an analysis of the original archived case notes that have recently come to light. Examination reveals discrepancies in significant details of the history of the case and raises questions about the degree of impairment and recovery throughout his illness as reported in the published article. Consideration of these differences between the presentation of the case in the British Medical Journal publication and the documentation in the original patient records raises issues about the validity of this case as evidence for the many arguments it was to support that have persisted to the present. 相似文献