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Instantaneous and accurate prediction of bus arrival time can help improve the quality of bus-arrival-time information service, and attract additional ridership. On the basis of bus running processes, a self-adaptive exponential smoothing algorithm is proposed to predict the bus running speed based on the short-term running speeds of taxis and buses available. And a bus travel time prediction model is proposed, in which the delay caused by the signal control and the acceleration and deceleration are considered. The research results show that there is a significant linear correlation between speeds of buses and taxis on the same link during the same time period, and the overall performance of the RFID-data-based model is superior to that of AVL- data-only-based model, regardless of whether the traffic congested or not.

Abstract: A 2-year study onKappaphycus alvarezii (Doty) Doty introduced to Hainan Island from the Philippines in 1985 showed promising results. The average daily growth in weight reached 10% at a favourable temperature of about 26°C. Experimental results showed that timely cutting of the plant was an effective way to obtain new cuttings for cultivation and accelerate growth. New cuttings 0.05 kg in weight are suggested to be used as “seeds” and the old plant should be harvested. At present, artificial cultivation with a type of underwater raft applicable in places where there is strong wind will expand cultivation to more regions in Hainan Province.