排序方式: 共有45条查询结果,搜索用时 15 毫秒
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Luigi Capasso 《International Journal of Osteoarchaeology》1998,8(2):107-115
A complex lesion, on a skull of a female cave bear (Ursus spelaeus) associated with perforations of the frontal sinus is described. Paleopathological analysis suggests that the lesion is attributable to complex cranial trauma, probably complicated by an infection which appears to have occurred following a fight, most likely with another bear or, possibly, a cave lion (Panthera leo spelaea); at least one of the perforations observed on the skull may have been produced by the canine of a large carnivore. This hypothesis is supported by the frequent intraspecific aggressiveness documented in modern bears, and by evidence suggesting interspecific fights between cave bears and cave lions. The case is discussed in the light of other evidence reported in the literature. © 1998 John Wiley & Sons, Ltd. 相似文献
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Paolo Martinelli Andrea Galli Luigi Barazzetti Matteo Colombo Roberto Felicetti Mattia Previtali 《International Journal of Architectural Heritage》2018,12(2):237-256
The article presents the results of an experimental and numerical investigation on Azzone Visconti bridge, a 14th century arch bridge in Lecco (northern Italy). Starting from the historical data and from an extensive mechanical characterization of both the soil constituting the riverbed and of the masonry constituting the piers, the aim of the study is to investigate the bearing capacity of the bridge. A testing loading scheme defined according to the current Italian Code is adopted to check the structural behavior. A simplified finite element structural model was conceived and calibrated as a control tool to safely perform the experimental tests. Post-test nonlinear finite element analyses have allowed the prediction of the bridge bearing capacity and the definition of the bridge class according to the Italian regulations. 相似文献
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Alessandra Marotta Luigi Sorrentino Domenico Liberatore Jason M. Ingham 《Journal of Earthquake Engineering》2013,17(6):912-934
The 2010–2011 Canterbury, New Zealand earthquake sequence caused extensive damage to unreinforced masonry churches. A sample of 80 affected buildings was analysed and their performance statistically interpreted. Structural behaviour is described in terms of mechanisms affecting the so-called macro-elements, and damage probability matrices are computed. Regression models correlating mean damage level against macroseismic intensity are also developed for all observed mechanisms, improving the initial simple-linear formulations through use of multiple-linear regressions accounting for vulnerability modifiers, whose influence is evaluated via statistical procedures. Results presented herein will support the future development of predictive tools for decision-makers, also contributing to seismic vulnerability mitigation at a territorial scale. 相似文献
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Luigi Sorrentino Dina D’Ayala Gianmarco de Felice Michael C. Griffith Sergio Lagomarsino Guido Magenes 《International Journal of Architectural Heritage》2017,11(1):2-21
ABSTRACTObservations after strong earthquakes show that out-of-plane failure of unreinforced masonry elements probably constitutes the most serious life-safety hazard for this type of construction. Existing unreinforced masonry buildings tend to be more vulnerable than new buildings, not only because they have been designed to little or no seismic loading requirements, but also because connections among load-bearing walls and with horizontal structures are not always adequate. Consequently, several types of mechanisms can be activated due to separation from the rest of the construction. Even when connections are effective, out-of-plane failure can be induced by excessive vertical and/or horizontal slenderness of walls (length/thickness ratio). The awareness of such vulnerability has encouraged research in the field, which is summarized in this article. An outline of past research on force-based and displacement-based assessment is given and their translation into international codes is summarized. Strong and weak points of codified assessment procedures are presented through a comparison with parametric nonlinear dynamic analyses of three recurring out-of-plane mechanisms. The assessment strategies are marked by substantial scatter, which can be reduced through an energy-based assessment. 相似文献
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Reported are the results of a multivariate analysis, here called multivariable analysis, of an Italian Late Neolithic archaeofauna. The technique adopted is that proposed by Behrensmeyer (1991), adapted to the needs of zooarchaeology. It is tested on an inter-hut bone accumulation from the target site of Offida, near Ascoli Piceno, Marche region, in central eastern Italy, which is characterized by vertebrate remains, invertebrates, stone implements, and ceramics. The typology of the ceramics date the site from 3800 to 3100 B.C. Offida's subset was chosen not only for its rich and varied information, but also for its containing both domestic and wild mammalian remains. The multivariable method is tested on these two faunal components both separately and jointly, with the addition of the undetermined specimens. The results are then compared with those obtained plotting the variables of the bone accumulations of two open-air Neolithic settlements, a small, temporary one in Italy, Mulino Sant'Antonio, and a large one in Israel, Hefzibah 7–18. The first is an Italian Neolithic site typologically and dimensionally similar to Offida; the second is outside Italy and much larger than Offida. Offida's domestic assemblage results more fragmented than its wild animal component. It shows evidence of intense elaboration by the villagers, low richness and a relatively higher amount of sheep/goats and cattle, no bone articulation or sorting, as well as the effects of moderate exposure and prolonged trampling. The wild animal component, in contrast, shows rather high equitability and a lower overall body size. The analysis proves that wildlife already was a minor resource for the Late Neolithic people in this part of Italy. The multivariable approach also shows that a backyard or pathway assemblage such as Offida's is more similar to the overall bone accumulation of a small-sized, temporary settlement than to that of a larger site, and that this particular kind of assemblage is characterized both by a patchy distribution of the bone fragments and by a relatively high incidence of trampling. 相似文献
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Luigi Mazza 《European Planning Studies》1999,7(5):557-561
An understanding of socio‐spatial processes is the source and the content of planners literacy, and may be considered a core of the planning education programme, but it is not sure that planners’ professional profiles may arise as specializations from that core. There are too many forms of planning to identify one specific planning domain. Moreover, in different contexts we experience different planning practices of a single form of planning, e.g. land‐use planning. Then, to identify a possible specific domain of land‐use planning, we should understand and reveal its technical commonalities within different planning contexts. This basic technical knowledge could be considered the best key for planners to enter the worlds of meanings and values and to participate in the polity debate. 相似文献
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