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The objective is to design a computer-based software for hearing impaired children's speech training and learning. To use a visual assistant method for training and developing the speech ability of hearing impaired children, we used the technique of dynamic computer graphics to establish an animation display system. The system can display the dynamic relations among the basic elements of the articulators. The position and the change of nose chamber, mouth chamber, tongue, and lips during speech will be shown from different profiles. This makes sure that the subject with hearing impaired children can catch the accurate speech technique. In the future, we will use the network tuition model to assist special education teachers in their teaching methods. Using such an assistant system, we are sure of achieving improvement of the efficiency and efficacy for developing the language and speech ability of hearing impaired children.

The purpose of the research is to design a visual assistant method for training and developing the speech ability of people with hearing disorders. We used the technique of dynamic computer graphics to establish a display system. The system can display the dynamic relation among the basic elements of speaking. The position and the change of the mouth chamber, tongue, and lips during speech were shown from different profiles. This ensures that the subject with a hearing disorder acquires an accurate speech technique. We also used the network tuition model to assist teachers in their teaching method. Using such an assistant system, we are confident that the efficiency and efficacy of developing the language and speech ability of hearing disorders can be improved.

New results are presented on interfacial patterns observed for air and water flowing in horizontal 2.54 and 9.53 cm pipelines close to atmospheric conditions. This work differs from previous studies in that measurements of pressure fluctuations at two locations separated in the streamwise direction are used to detect slugs. The liquid flow needed to initiate slugs at low gas velocities is strongly affected by pipe diameter and appears to depend on a linear instability. At high gas velocities the transition is approximately independent of pipe diameter and is explained by a nonlinear mechanism associated with the coalescence of roll waves. The initiation of slugs in the annular flow regime is determined to occur at much lower liquid flows than had been reported by previous investigators. The transition from stratified to annular flow is different in smaller-diameter pipes than in larger pipes because wave wetting plays a more important role.