892 resultados para Abstract economics


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Air Cargo Economics - Outline - Air cargo participants - Air cargo pricing, rates & yields - Cargo related costs - Freighter aircraft operating costs - Methods of cost allocation - Pax/combi vs freighter services - Lufthansa’s cargo strategy - Quick change aircraft - Aircraft wet leasing - Conclusions

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RESUMO: Existem vários turistas que se descolam para um determinado destino impulsionados por uma ou mais motivações. De qualquer das formas, devido ao intenso ritmo de vida das pessoas, a religião tem sido, cada vez mais, um elemento turístico que atrai várias pessoas que têm como principal motivação a fé. O Turismo Religioso ou Turismo com destino religioso, não tem sido considerado individualmente. Isto significa que este tipo de Turismo tem uma ligação forte com o património existente em áreas que desenvolvem a actividade turística. Por sua vez, o Turismo Religioso só é praticado quando existe esse património. A Vila de Arcozelo em Vila Nova de Gaia é um local que se depara com algumas limitações em termos económicos pelo que o Turismo poderá desempenhar um papel importante na sua estratégia de desenvolvimento. Apesar de afastada do grande centro urbano portuense, consegue atrair vários tipos de turistas, nomeadamente turistas de sol e mar e religiosos. Estes últimos têm como principal curiosidade visitar a “Santa” Maria Adelaide, mais conhecida por a “Santa das Noivas”. Em síntese, em termos científicos, esta Dissertação, procurou analisar as influências e o potencial que o Turismo Religioso pode representar para esta Vila e assim contribuir de forma consistente para o desenvolvimento local. ABSTRACT: There are many tourists who travel to a certain destination driven by one or more motivations. Anyway, due to the intense pace of life, religion has been, increasingly, a tourist element that attracts many people whose main motivation is faith. Religious tourism or tourism to a religious destination has not been considered. This means that this type of tourism has a strong connection with the existing heritage areas to develop tourism. On the other hand, religious tourism is practiced only when there is such a heritage. The Village of Arcozelo in Vila Nova de Gaia is a place that faces some limitations in terms of economics therefore tourism can play an important role in its development strategy. Although away from the major urban centre of Porto, the place manages to attract various types of tourists, especially sun and sea tourists, and religious tourist. These last ones have the curiosity to visit “Santa Maria Adelaide”, better known as the “Saint of the Brides”. Summarising, in scientific terms, this thesis sought to analyze the influences and the potential that religious tourism can bring to this village and this way consistently contribute to local development

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Answering many of the critical questions in conservation, development and environmental management requires integrating the social and natural sciences. However, understanding the array of available quantitative methods and their associated terminology presents a major barrier to successful collaboration. We provide an overview of quantitative socio-economic methods that distils their complexity into a simple taxonomy. We outline how each has been used in conjunction with ecological models to address questions relating to the management of socio-ecological systems. We review the application of social and ecological quantitative concepts to agro-ecology and classify the approaches used to integrate the two disciplines. Our review included all published integrated models from 2003 to 2008 in 27 journals that publish agricultural modelling research. Although our focus is on agro-ecology, many of the results are broadly applicable to other fields involving an interaction between human activities and ecology. We found 36 papers that integrated social and ecological concepts in a quantitative model. Four different approaches to integration were used, depending on the scale at which human welfare was quantified. Most models viewed humans as pure profit maximizers, both when calculating welfare and predicting behaviour. Synthesis and applications. We reached two main conclusions based on our taxonomy and review. The first is that quantitative methods that extend predictions of behaviour and measurements of welfare beyond a simple market value basis are underutilized by integrated models. The second is that the accuracy of prediction for integrated models remains largely unquantified. Addressing both problems requires researchers to reach a common understanding of modelling goals and data requirements during the early stages of a project.

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This article explores how data envelopment analysis (DEA), along with a smoothed bootstrap method, can be used in applied analysis to obtain more reliable efficiency rankings for farms. The main focus is the smoothed homogeneous bootstrap procedure introduced by Simar and Wilson (1998) to implement statistical inference for the original efficiency point estimates. Two main model specifications, constant and variable returns to scale, are investigated along with various choices regarding data aggregation. The coefficient of separation (CoS), a statistic that indicates the degree of statistical differentiation within the sample, is used to demonstrate the findings. The CoS suggests a substantive dependency of the results on the methodology and assumptions employed. Accordingly, some observations are made on how to conduct DEA in order to get more reliable efficiency rankings, depending on the purpose for which they are to be used. In addition, attention is drawn to the ability of the SLICE MODEL, implemented in GAMS, to enable researchers to overcome the computational burdens of conducting DEA (with bootstrapping).

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Recent developments in the fields of veterinary epidemiology and economics are critically reviewed and assessed. The impacts of recent technological developments in diagnosis, genetic characterisation, data processing and statistical analysis are evaluated. It is concluded that the acquisition and availability of data remains the principal constraint to the application of available techniques in veterinary epidemiology and economics, especially at population level. As more commercial producers use computerised management systems, the availability of data for analysis within herds is improving. However, consistency of recording and diagnosis remains problematic. Recent trends to the development of national livestock databases intended to provide reassurance to consumers of the safety and traceability of livestock products are potentially valuable sources of data that could lead to much more effective application of veterinary epidemiology and economics. These opportunities will be greatly enhanced if data from different sources, such as movement recording, official animal health programmes, quality assurance schemes, production recording and breed societies can be integrated. However, in order to realise such integrated databases, it will be necessary to provide absolute control of user access to guarantee data security and confidentiality. The potential applications of integrated livestock databases in analysis, modelling, decision-support, and providing management information for veterinary services and livestock producers are discussed. (c) 2004 Elsevier B.V. All rights reserved.

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This study investigates the effect of information about potential benefits of biotechnology on consumer acceptance of genetically modified (GM) foods. Consumer willingness to accept compensation to consume a GM food was elicited using an incentive compatible auction mechanism in three US states (California, Florida, and Texas) and in two European countries (England and France). Results indicate that information on environmental benefits, health benefits and benefits to the third world significantly decreased the amount of money consumers demanded to consume GM food; however, the effect of information varied by type of information and location. Consistent with prior research, we find that initial attitudes toward biotechnology have a significant effect on how individuals responded to new information.