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Spatial relationships, which refer to the relationship among some geographical entities, are very important in geographic information systems. Involving the relations of topology, distance and direction, route choice problem is also the contents of spatial relationships. This paper aims to explore the ring roads impact on travelers when choosing routes in Beijing, and to provide a reference model...
Online auction has been popular increasingly in the modern world, and most commodities could be sold by the online auction, which could save time and energy. The main auction method is price-only auction, which only negotiation on price. In fact, buyers always take quality, delivery time, terms of payment and other non-price attributes into consideration when they take part in the auction. Therefore...
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