Browsing by Author "Delgado, Olga"
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- Cruises tourism in Lisbon: the impact on the portuguese economy.Publication . Mendes, Zorro; Mendes, Dulce; Delgado, Olga; Fabrizio Serra editoreThis paper aims to demonstrate the broad impact of demand for goods and services on the Portuguese economy, made by cruise tourists who stop over in the Port of Lisbon. The paper applies the input-output matrix methodology in order to measure both direct and indirect effects on the Portuguese economy. Based on the most updated data available (2016), it is shown that direct demand exerted by cruise tourists in Lisbon, in the total amount of EUR 17,799,011, limited to certain activity sectors, spreads across all sectors of the national economy, by inducing to a dynamic in total national production, reaching EUR 29,329,662 (which can be quantified for each of the 62 activity sectors considered in the input-output matrix).
- Demand of Mozambique seaportsPublication . Barros, C.P.; Zorro, M. J.; Mendes, Dulce; Delgado, OlgaThis paper presents an Analysis of Mozambique seaports from 2001-2015 using the Anderson, De Palma and Thisse’s ideal type demand model. The seaports of Mozambique serve not only Mozambique but also other countries without acess to sea. For example Beira seaport as a specific train line to Zambia. The ideal type model of Anderson, Palma and Thisse is a model of heterogenous seaports that is estimated in two steps and accounts for endogeneity of the price. The results reveal that the seaport market share increases with income and with the price of container cargo, while decreases with the price of maritime transport services and the price of truck transportation.. The price is endogenous in demand equation and the endogeneity is taken into account in the demand estimation. The price of trucks has a negative coefficient and therefore is a complementary good. Demand elasticities are presented. A robustness test is done estimating also the Berry, Levinsohn, and Pakes approach and comparing the results.
- Induced accident in the maritime sinister of Costa ConcordiaPublication . Oca, Reynaldo Montes de; Madariaga, E.; Delgado, Olga; García, SergioThis study determined by the theory of the Maritime Accidents the causal factors that led to the catastrophe of the passenger´s vessel Costa Concordia. In the study we've applied the key elements of such theory, as they are the pressure of production and/or the pressure of technological advances, acting on the individual risk homeostasis of the operator. After performing this analysis, we set up a discussion in which we have established that this case meets the foundations of the induced maritime accidents (strong core, protector ring, positive and negative heuristics) and the existence of the key elements as were the captain and the first mate. It was established conclusions that these foundations are combined and accumulated in such a way that caused the rupture of the margin of safety, leading to the inevitable. If he had managed to maintain a margin of safety permissible, the sinister passenger vessel Costa Concordia would have been avoided.
- Risk Driven Semantic Interoperability in the Maritime Surveillance DomainPublication . Marques, Fernando Sérgio Bryton Dias; Martínez, Jesús; Delgado, Olga; Arriaga, GonzaloSemantic Interoperability (SI) is essential for organizations as to share information, via computer systems, without which their efficiency and effectiveness is hampered. Assuming multiple actions for enhancing SI are possible, and that resources are usually scarce, the more relevant ones should have higher priority. Since information sharing, in the maritime surveillance domain, is essential for dealing with risks, such as irregular migration or piracy, this paper presents a method for prioritizing SI development actions based on the risks they aim to address. The method was developed by following the Design Science Research strategy, is based on the Delphi method and the Weighted Sum Model, and was validated in a real environment, with six organizations involved in maritime surveillance. The method aims to foster information sharing by supporting the development of action plans for enhancing SI, which may deliver relevant results faster, cheaper and less risky than traditional approaches.