In this paper, the preconditioned accelerated overrelaxation (AOR) method for solving a class of two-by-two linear systems is presented. A new preconditioner is proposed according to the idea of [1] by Wu and Huang. T...In this paper, the preconditioned accelerated overrelaxation (AOR) method for solving a class of two-by-two linear systems is presented. A new preconditioner is proposed according to the idea of [1] by Wu and Huang. The spectral radii of the iteration matrix of the preconditioned and the original methods are compared. The comparison results show that the convergence rate of the preconditioned AOR methods is indeed better than that of the original AOR methods, whenever the original AOR methods are convergent under certain conditions. Finally, a numerical example is presented to confirm our results.展开更多
We redefine "green food enterprises" and expound the connotation of "greenification" of food processing industry. Taking the case of Heilongjiang Province, we give an overview of green food enterpr...We redefine "green food enterprises" and expound the connotation of "greenification" of food processing industry. Taking the case of Heilongjiang Province, we give an overview of green food enterprises in Heilongjiang Province, and study the degree of "greenification" of food processing industry in Heilongjiang Province, through the case study of related enterprises. There are some problems in the process of pushing forward "greenification" of food processing industry, such as the high cost of production, varying quality of products, weak R & D capability and the distance limitations of raw material places and the consumer market. The following recommendations are put forth for promoting the "greenification" of food enterprises: (i) Reducing the production costs of green food, and improving the "greenification rate"; (ii) Intensifying policy support, and creating a "green" environment; (iii) Strengthening quality control, and improving consumers trust in green food; (iv) Establishing the network of green marketing, and broadening sales channels of green food.展开更多
The mining of massive medicine data is one of the most widely problem in our world. However, it’s efficiency and accuracy are still not satisfactory. Many traditional mining algorithms which calculate repeatedly to r...The mining of massive medicine data is one of the most widely problem in our world. However, it’s efficiency and accuracy are still not satisfactory. Many traditional mining algorithms which calculate repeatedly to reduce the dependence between data always ignore the correlation between them. To improve the effect of diagnosis, we extract some special features by conducting a preliminary classification and identification. Then, the specific characteristics of various medical data is mined by correlation mining method. The simulation experimental results demonstrate the validity of the improved algorithm.展开更多
文摘In this paper, the preconditioned accelerated overrelaxation (AOR) method for solving a class of two-by-two linear systems is presented. A new preconditioner is proposed according to the idea of [1] by Wu and Huang. The spectral radii of the iteration matrix of the preconditioned and the original methods are compared. The comparison results show that the convergence rate of the preconditioned AOR methods is indeed better than that of the original AOR methods, whenever the original AOR methods are convergent under certain conditions. Finally, a numerical example is presented to confirm our results.
基金Supported by National Natural Foundation of China(71173035)Scientifi cand Technological Project in Heilongjiang Province(GC10D206)Cultivation of New Century Excellent Talents in Universities of Heilongjiang Province(1252-NCET-001)
文摘We redefine "green food enterprises" and expound the connotation of "greenification" of food processing industry. Taking the case of Heilongjiang Province, we give an overview of green food enterprises in Heilongjiang Province, and study the degree of "greenification" of food processing industry in Heilongjiang Province, through the case study of related enterprises. There are some problems in the process of pushing forward "greenification" of food processing industry, such as the high cost of production, varying quality of products, weak R & D capability and the distance limitations of raw material places and the consumer market. The following recommendations are put forth for promoting the "greenification" of food enterprises: (i) Reducing the production costs of green food, and improving the "greenification rate"; (ii) Intensifying policy support, and creating a "green" environment; (iii) Strengthening quality control, and improving consumers trust in green food; (iv) Establishing the network of green marketing, and broadening sales channels of green food.
文摘The mining of massive medicine data is one of the most widely problem in our world. However, it’s efficiency and accuracy are still not satisfactory. Many traditional mining algorithms which calculate repeatedly to reduce the dependence between data always ignore the correlation between them. To improve the effect of diagnosis, we extract some special features by conducting a preliminary classification and identification. Then, the specific characteristics of various medical data is mined by correlation mining method. The simulation experimental results demonstrate the validity of the improved algorithm.
