排序方式： 共有94条查询结果，搜索用时 15 毫秒
61.
Cristina Gonzalez-Longo 《Conservation and Management of Archaeological Sites》2013,15(2):136-140
62.
Cristina Gómez Michael A. Wulder Alastair G. Dawson William Ritchie David R. Green 《Scottish Geographical Journal》2013,129(4):279-299
AbstractObservation of cause–effect patterns of change in coastal environments provides insights into vulnerable areas and supports prediction and adaptation to flooding and erosion. Historic and periodic (6–8 year intervals) imagery from the Landsat archive is used to investigate transformations in the Atlantic coast of two Scottish islands over the period 1989–2011. Supervised classification of spectrally normalized images followed by change detection and spatial analysis reveals the patterns of change and the location of the most dynamic coastal areas. Quantitative measures of recent shifts and movement rates of relevant coastal lines, such as the lower limit of land-based vegetation, are assessed with the Digital Shoreline Analysis System. While very low rates are indicated for horizontal changes in the position of the lower limit of land-based vegetation (0.3?m?y?1), specific areas have been subjected to high rates of coastal progradation as well as erosion (e.g. 2.5?m?y?1 at Stilligarry). Information derived from satellite data supports the characterization of geomorphologically dynamic coasts at regional scales. With a rich and open access archive of imagery, a commitment to continuity, and compatibility with the Earth observation missions of other space programs, the Landsat mission offers useful and otherwise unavailable data for monitoring of coastal areas. 相似文献
63.
64.
Cristina La Rocca 《Early Medieval Europe》2015,23(4):410-435
This paper deals with the construction of the foreign woman as a category that could explain, in the sixth century, the agency or the dangers of wives in different narrative contexts. The diffusion of foreign women in the sixth and seventh centuries as brides of kings and aristocrats is compared to contemporary archaeological funerary evidence. The very important role of Theoderic as wife‐giver king and the context of his power – Italy – developed the concept of a new foreign subject, identifiable in particular among peregrini both from and within Italy. This development heightened the possibility of creating networks and exporting foreign models. 相似文献
65.
66.
Cristina García‐Hernndez Jesús Ruiz‐Fernndez Benjamín Gonzlez‐Díaz 《Geographical Research》2019,57(2):189-203
The snowstorms that affected the Cantabrian Mountains in the winter of 1888 caused unprecedented damage, and the absence of a “resilient approach” to this episode had several consequences worth further consideration. In this study, we explored interconnections between and among memory, social learning, and resilience by surveying the affected landscapes, conducting interviews with current residents, and reviewing historical sources such as press archives. The mixed method has enabled us to examine the construction and transmission of respondents' memories and to link those narratives to our reading of the presence or absence of risk mitigation actions—especially against snow avalanches. Our analysis has established that the 1888 snowstorms are remembered down the decades in ways that downplay risk, neglect social learning and changes to community practices and capacities to cope with uncertainties, and fail to shape preventive measures against future disasters. These insights have relevance for those interested in how archival research, field observations, and contemporaneous interviews can aid understandings of inherited memory, social learning, and resilience. 相似文献
67.
A large ceramic vessel was discovered at São Brás (southern Portugal) containing a metallic hoard from the Chalcolithic/Early Bronze Age period. These weapons and tools were characterized by microanalytical techniques as being composed of copper with varying arsenic contents (2.2 ± 1.6 wt%) and minor amounts of lead, bismuth and iron. The collection shows a clear association between daggers and copper with a higher arsenic content, which can be explained by the high status of these silvery alloys. Finally, the compositional distribution of the hoard was compared with the metallurgy of the Bell Beaker and non–Bell Beaker communities inhabiting the south‐western Iberian Peninsula. 相似文献
68.
Cristina Cantagallo Guido Camata Enrico Spacone 《Journal of Earthquake Engineering》2019,23(2):261-283
The seismic damage evaluated through Nonlinear Time-History Analyses is significantly affected by the response quantity chosen to represent the seismic responses. Starting from the theory of tolerance regions, a generic upper limit of the seismic responses is proposed. The method is applied to a reinforced concrete structure subjected to different record combinations. For each considered damage index and record combination, the upper limit damage is compared with the average value suggested by seismic codes. The proposed method yields a higher seismic damage than the average response and an increase in the damage indices as the number of records decreases. 相似文献
69.
Cristina Bernini Maria Francesca Cracolici Peter Nijkamp 《Journal of regional science》2017,57(2):218-244
In recent discussions on local sustainable development, notions like “local for local” and “home bias” have often played a role. The purpose of this paper is to investigate whether preferences for specific place‐based attributes might constrain or support tourism participation and tourism destination choice of distinct socioeconomic groups of visitors. To test this proposition, a large data set from the Italian Households Budget Survey for the period 1997–2007 has been used and, by means of the double‐hurdle model, tourism participation and expenditure are modeled over the life‐cycle of tourists. These data are next merged with location‐specific attributes including natural amenities and infrastructural and regional‐economic context variables. Our results show that location‐specific or place‐based characteristics affect intra‐ and interregional tourism differently, as well as destination choices. Regional differences between residents in two different macroareas in Italy (North and Center‐South) are investigated. Location‐specific characteristics may be either push or constraint factors for tourism participation. For families living in the North, participation in the tourism market is supported by the tourist characteristics of their home region. For families living in the central and southern regions however, economic conditions of the area where they reside appear to be more significant. 相似文献
70.