The behavior of fluid flow and particle motion in a 6-strand bloom castertundish was investigated by a water model and numerical simulation. Compared with a device withoutflow control, the tundish with flow control ha...The behavior of fluid flow and particle motion in a 6-strand bloom castertundish was investigated by a water model and numerical simulation. Compared with a device withoutflow control, the tundish with flow control has an important effect on the fluid flow pattern andinclusion removal. It is revealed that by non-isothermal process, which is real productioncondition, the fluid flow in tundish shows a strong buoyancy pattern, which drives particles to moveupwards. The particle removal was quantitatively studied by mathematical and physical simulations.展开更多
This paper discusses the classification problems of text documents. Based onthe concept of the proximity degree, the set of words is partitioned into some equivalence classes.Particularly, the concepts of the semantic...This paper discusses the classification problems of text documents. Based onthe concept of the proximity degree, the set of words is partitioned into some equivalence classes.Particularly, the concepts of the semantic field and association degree are given in this paper.Based on the above concepts, this paper presents a fuzzy classification approach for documentcategorization. Furthermore, applying the concept of the entropy of information, the approachesto select key words from the set of words covering the classification of documents and to constructthe hierarchical structure of key words are obtained.展开更多
文摘The behavior of fluid flow and particle motion in a 6-strand bloom castertundish was investigated by a water model and numerical simulation. Compared with a device withoutflow control, the tundish with flow control has an important effect on the fluid flow pattern andinclusion removal. It is revealed that by non-isothermal process, which is real productioncondition, the fluid flow in tundish shows a strong buoyancy pattern, which drives particles to moveupwards. The particle removal was quantitatively studied by mathematical and physical simulations.
文摘This paper discusses the classification problems of text documents. Based onthe concept of the proximity degree, the set of words is partitioned into some equivalence classes.Particularly, the concepts of the semantic field and association degree are given in this paper.Based on the above concepts, this paper presents a fuzzy classification approach for documentcategorization. Furthermore, applying the concept of the entropy of information, the approachesto select key words from the set of words covering the classification of documents and to constructthe hierarchical structure of key words are obtained.
