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In this paper, a new method based on Group Method of Data Handling (GMDH), Improved Particle Swarm Optimization (PSO), and Least Squares Support Vector Machine (LSSVM) is proposed to solve the problem in power load forecasting, which is difficult to determine the input node and model parameters of minimum support vector machine (LSSVM) modeling. The specific method is as follows: firstly, the authors...
Based on data of the remote sensing and field surveys, we find and determine the distribution of old channels in the Jialing River. A total of 13 old channels are found and determined. They distribute mainly the reach of Langzhong - Nanchong. Meander parameters show that their meander ratio C values are all larger than 3.00, and the average value is 7.80. The C values of 4 meander belts are larger...
In this paper, the theory of optical front transmission for the ship's bubble wake is described, the relationship is obtained between the optical front transmission intensity, the bubble diameter, the bubble number and the bubble distribution characteristic based on the account formulation of the turbidity degree. The results are proved by the simulating experiment. The relationship is analyzed between...
The parameters, such as impulse number, impulse amplitude, impulse width and impulse top of optical front transmission information hold the characteristic to detect bubble wake. By analyzing for single bubble and two bubbles and experimenting, optical front transmission pulsation characteristics are studied.
Rare-earth-based alloys with overall composition AB 5+x have been investigated, where A represents a lanthanum-rich mischmetal (Ml) and B contains the elements Ni, Co, Mn and Al. The results indicated that with x < 0.2 the alloys exhibited a single-phase AB 5 compound having hP6(CaCu 5 ) hexagonal structure and with x ⩾ 0.2 a second phase could be observed. The double-phase...
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