5 research outputs found

    Representing Time-dependent Information in Multidimensional XML

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    Multidimensional XML (MXML) is an extension of XML that incorporates dimensions in order to represent in an elegant and concise way context-dependent data, that is, data which can exhibit different variations in value or structure (e.g. that can exist in different languages or various degrees of detail). In this paper we show that MXML dimensions can be used to express time and associate it with XML elements and attributes. We discuss the properties of time domain and the features of MXML which are necessary in order to represent time, and give key points that motivate further investigation on the use of MXML for representing time-dependent data

    Revisiting a hegemonic honcept: long-term ‘Mediterranean urbanization’ in between city re-polarization and metropolitan decline

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    Urban development in southern Europe differs from urbanization patterns observed in other affluent countries. Urbanization processes in the Mediterranean region reflect heterogeneous spatial forms and more similar socioeconomic dynamics. Rejecting a unique ‘Mediterranean city’ model, this study proposes a thorough analysis of post-war urban development in four southern European countries (Greece, Italy, Portugal and Spain) focusing on homogeneous patterns and possible sources of heterogeneity in spatio-temporal trends of individual city expansion. Urbanization without industrialization - boosted by the informal economy and the development of traditional services - has driven the growth of large cities through agglomeration economies enhanced by internal immigration. This trend has deflated shortly after the end of the baby boom, favoring slow dynamics towards spatially-balanced settlements and determining a recovery of medium-sized cities, which have been further consolidated with the economic crisis

    Pancreatic surgery outcomes: multicentre prospective snapshot study in 67 countries

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    Background: Pancreatic surgery remains associated with high morbidity rates. Although postoperative mortality appears to have improved with specialization, the outcomes reported in the literature reflect the activity of highly specialized centres. The aim of this study was to evaluate the outcomes following pancreatic surgery worldwide.Methods: This was an international, prospective, multicentre, cross-sectional snapshot study of consecutive patients undergoing pancreatic operations worldwide in a 3-month interval in 2021. The primary outcome was postoperative mortality within 90 days of surgery. Multivariable logistic regression was used to explore relationships with Human Development Index (HDI) and other parameters.Results: A total of 4223 patients from 67 countries were analysed. A complication of any severity was detected in 68.7 percent of patients (2901 of 4223). Major complication rates (Clavien-Dindo grade at least IIIa) were 24, 18, and 27 percent, and mortality rates were 10, 5, and 5 per cent in low-to-middle-, high-, and very high-HDI countries respectively. The 90-day postoperative mortality rate was 5.4 per cent (229 of 4223) overall, but was significantly higher in the low-to-middle-HDI group (adjusted OR 2.88, 95 per cent c.i. 1.80 to 4.48). The overall failure-to-rescue rate was 21 percent; however, it was 41 per cent in low-to-middle-compared with 19 per cent in very high-HDI countries.Conclusion: Excess mortality in low-to-middle-HDI countries could be attributable to failure to rescue of patients from severe complications. The authors call for a collaborative response from international and regional associations of pancreatic surgeons to address management related to death from postoperative complications to tackle the global disparities in the outcomes of pancreatic surgery (NCT04652271; ISRCTN95140761)
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