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This contribution pursues two of the approaches reviewed in the survey article in this issue, viz, the weighted-share approach and the analytical one. The results of the former are complemented by estimates of the corresponding effects on the level of trade.  相似文献   
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Continuing developments in science and technology that affect many dimensions of human life, especially those related to longevity, require responses from social policies and programmes to enable quality‐of‐life improvements in every sector, including leisure. To contribute to research in this area, this qualitative study sought to identify the perceptions of and meanings attached to participation in (active outdoor) leisure by a group of elderly citizens of Araras, São Paulo State, Brazil. Data were collected via questionnaires administered to a mixed‐gender sample of 100 persons, aged between 60 and 80 years, after they had participated in an outdoor adventure/leisure programme. The data were subjected to thematic content analysis. The study revealed that the participants identified positive emotional effects as a result of their participation, relating to their sense of belonging to a group, to their increased quality of life and to their ability to remain physically active.  相似文献   
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Measuring service quality in a reliable and valid manner is crucial. Accordingly, this study explores whether the tourism-oriented Importance-Performance construct is a theoretically sound measure of service quality. The conceptual analysis is followed by an empirical test of the construct's prediction capability within the realm of service quality/satisfaction framework in the tourism context of a large festival. Both the conceptual and empirical results clearly indicate that the validity of the Importance-Performance construct should be strongly doubted, and that tourism and hospitality managers as well as researchers would be better off avoiding the use of the Importance-Performance construct.  相似文献   
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Prisoners’ Dilemma (PD) experiments confirm and extend Axelrod’s (The evolution of cooperation. Basic Books, New York, 1984) Shadow of the Future hypothesis: subjects cooperate in infinitely repeated PD, but they also cooperate until near the end in finitely repeated PD. So the extended hypothesis is that cooperation depends on the probability of continued play. Observational tests of this hypothesis, or even applications, have been rare at best. Here we not only apply but test it for interbranch cooperation under separated-powers constitutions, specifically those of the American states, using the end of governors’ final terms as end points and the rate of overridden vetoes as the extreme case of a breakdown in interbranch cooperation. Controlling for a variety of factors, including divided government, we find support for the hypothesis, whose explanation of interbranch interaction fills a gap left open by Madison’s Federalist 51: how republican government can control itself when what is needed is “energy” more than safeguards.  相似文献   
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