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31.
On the basis of the outcomes of five disaggregate national models for passenger transport, four national models for freight transport and two European transport models, a fast and approximate meta-model for passenger and freight transport in Europe has been developed. The meta-model for passenger transport includes a detailed segmentation of the population, which makes it possible to investigate the impact of policies on many different groups of the population. The meta-model for passenger and freight transport has been applied for a reference scenario for 2020 and to simulate many elements of the European Commission's Common Transport Policy. These policy measures were also assessed in terms of the consequences on the internal and external cost of transport. 相似文献
32.
Bruce Gunn Ph.D. 《Journal of the Academy of Marketing Science》1975,3(2):161-171
The anatomy of the macro marketing system is developed through the use of a systems methodology. This conceptual model provides academics with a frame of reference for fleshing out the marketing system as it develops over time. Beyond depicting its parts and their interrelationships, the treatise emphasizes a fundamental premise orienting change within the marketing system. Contemporary economic conditions necessitate that the marketing system operate as an aggregate mechanism for the maintenance of minimum costs. This furnishes practitioners with a basis for anticipating the transformation that will take place if the marketing system is to offer its denizens higher quality life styles in the future. 相似文献