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931.
932.
In this paper, we develop a paleoeconomic model of the co-evolution of economic specialization and encephalization—the common physiological measure of intelligence as reflected by brain mass relative to total body mass. Our economic analysis links ecological and social intelligence theories of increased encephalization in early hominins through a model in which both economic and ecological feedbacks jointly determined the evolutionary incentives. We focus on degrees of specialization affected by coordination costs with and without market exchange. Our results suggest encephalization would be a process characterized by diminishing returns to behavioral advances. In terms of the long-running debate in economics over whether specialization increases or decreases intelligence, our results suggest from an evolutionary perspective the answer depends on economic/social institutions and how these influence ecological interactions. 相似文献
933.
Helen L Kelsall Caroline F. Finch 《International journal of injury control and safety promotion》2013,20(2):61-78
Aim The aim of this review was to determine the extent to which the effectiveness of countermeasures for preventing alpine skiing injuries has been evaluated. Methods The methodology involved a critical review based on the available international literature and sports equipment standards, as well as consultation with experts in the field. Where possible, the review focused on controlled trials. Results Key injury countermeasures in skiing identified in this review include physical conditioning programmes, ski-bindings and their timely release, professional adjustment of ski-bindings and the use of mechanical testing devices for this, design of ski pole handles, helmets for children (and adults), ski patrollers, skier education, speed control on the slopes and safe lifting equipment. A tabular categorisation of the types of evidence for the effectiveness of injury countermeasures is presented. This demonstrates that the weight of evidence is generally based on a combination of data-based or biomechanical testing evidence and informed opinion/anecdotal evidence. There is minimal evidence based on controlled trials in the field. The most evaluated countermeasures are ski bindings and ski pole handles. Properly adjusted ski bindings have the potential for a 3.5-fold reduction in lower extremity injuries, particularly knee injuries. Ski pole handle design needs further innovation and attention. An immediate concern is the generally poorer standard of children’s equipment, ski bindings and their adjustment. Conclusion Skiing is a sport that is growing in popularity, but with a need for controlled trials of its injury prevention countermeasures. This review provides a basis for further action in injury prevention research, development and implementation. 相似文献
934.
935.
Victoria L. Crittenden William F. Crittenden Linda K. Ferrell O. C. Ferrell Christopher C. Pinney 《Journal of the Academy of Marketing Science》2011,39(1):71-85
Utilizing Resource-Advantage Theory as the underlying theoretical foundation and drawing on literature from a variety of disciplines,
we develop a market-oriented sustainability framework. By incorporating sustainability into market orientation, the goal of
strategic alignment of sustainability with marketing strategies is achieved to create a competitive advantage. Three constructs
identified in the model are DNA, stakeholder involvement, and performance management. These three constructs are the drivers
of sustainability. DNA is used as an extended metaphor to clarify and illustrate the workings of an organization and how sustainability
may be implemented. This construct includes core ideology, dynamic capabilities, and societal engagement. The firm’s DNA is
communicated to both internal and external stakeholders, and stakeholders’ concerns should be an influence on strategic marketing
planning. Performance management is the third major construct in the model and includes corporate social performance and corporate
financial performance metrics. Within the model explication, we offer propositions to support market-oriented sustainability
research and provide directions for sustainability theory, research, and practice. 相似文献
936.
Aid Quality and Donor Rankings 总被引:1,自引:0,他引:1
This paper offers new measures of aid quality covering 38 bilateral and multilateral donors, as well as new insights about the robustness and usefulness of such measures. The 2005 Paris Declaration on Aid Effectiveness and the follow-up 2008 Accra Agenda for Action have focused attention on common donor practices that reduce the development impact of aid. Using 18 underlying indicators that capture these practices—derived from the OECD-DAC’s Survey for Monitoring the Paris Declaration, the new AidData database, and the DAC aid tables—the authors construct an overall aid quality index and four coherently defined sub-indexes on aid selectivity, alignment, harmonization, and specialization. Compared with earlier indicators used in donor rankings, this indicator set is more comprehensive and representative of the range of donor practices addressed in the Paris Declaration, improving the validity, reliability, and robustness of rankings. One of the innovations is to increase the validity of the aid quality indicators by adjusting for recipient characteristics, donor aid volumes, and other factors. Despite these improvements in data and methodology, the authors caution against overinterpretation of overall indexes such as these. Alternative plausible assumptions regarding weights or the inclusion of additional indicators can still produce marked shifts in the ranking of some donors, so that small differences in overall rankings are not meaningful. Moreover, because the performance of some donors varies considerably across the four sub-indexes, these sub-indexes may be more useful than the overall index in identifying donors’ relative strengths and weaknesses. 相似文献
937.
938.
Imposing user fees in Nature-Based Tourism (NBT) contexts has been a controversial issue. Based on the notions of justice and fairness, this study extended previous work examining the relationship between attitudes toward user fees and spending support. In a proposed structural model of price fairness, fee spending support, and willingness to pay (WTP), this paper identified the antecedents of WTP user fees, and empirically examined to what extent the data fit the model. Furthermore, the moderating role of place attachment in the model was investigated by using multiple-group structural equation modeling. Subjects (n = 562) were recreational tourists to a forest area in the southeast U.S. Results revealed that spending support partially played a mediating role in the relationship between perceived price fairness and WTP user fees. A multiple-group invariance test also demonstrated that while the degree of place identity moderated the effect of price fairness on spending support, the degree of place dependence did not influence the relationships among the antecedents of WTP. 相似文献
939.
940.
Marketing innovation is essential for small industries to transform products into profit; therefore, understanding its nature and determinants is of utmost importance. This study aimed at understanding marketing innovation and its determinants in the 60 small food industries in the rural areas of Tehran province, Iran. Using a census sampling method, 111 managers of these firms were interviewed. Results showed that the firms’ performance in marketing innovation is generally weak, and a higher level of radical innovation in marketing is perceived compared to the incremental innovation. Also, a cause-and-effect relationship exists between both product and organizational innovations and marketing innovation. Furthermore, while incremental marketing innovation was negatively influenced by formal R&D unit, product diversification, and the manager’s years of experience, radical marketing innovation was affected by the capacity of production, product diversification, and managers’ age and education. The study concluded that in order to boost marketing innovation, innovation should be made also in products and organization. In addition, in order to facilitate the process of marketing innovation, practical and updated training for managers encouraging incremental innovation in marketing, product diversification, and improving R&D activities in the studied firms should be regarded. 相似文献