The purpose of this study is to examine and present the procedures and the tools that are described in the literature for observing preschool children＇s communication competence. Informal and formal standardised test...The purpose of this study is to examine and present the procedures and the tools that are described in the literature for observing preschool children＇s communication competence. Informal and formal standardised testing activities are included and a distinction is made on traditional and computer-based screening and diagnosis. The results of study illustrate the current trends of the literature and discuss the possibility of the computer-based screening and diagnosis to partially make up for the expert-personnel shortage展开更多
A CNC simulation system based on intemet for operation training of manufacturing facility and manufacturing process simulation is proposed. Firstly, the system framework and a rapid modeling method of CNC machine tool...A CNC simulation system based on intemet for operation training of manufacturing facility and manufacturing process simulation is proposed. Firstly, the system framework and a rapid modeling method of CNC machine tool are studied under the virtual environment based on PolyTrans and CAD software. Then, a new method is proposed to enhance and expand the interactive ability of virtual reality modeling language（VRML） by attaining communication among VRML, JavaApplet, JavaScript and Html so as to realize the virtual operation for CNC machine tool. Moreover, the algorithm of material removed simulation based on VRML Z-map is presented. The advantages of this algorithm include less memory requirement and much higher computation. Lastly, the CNC milling machine is taken as an illustrative example for the prototype development in order to validate the feasibility of the proposed approach.展开更多
文摘The purpose of this study is to examine and present the procedures and the tools that are described in the literature for observing preschool children＇s communication competence. Informal and formal standardised testing activities are included and a distinction is made on traditional and computer-based screening and diagnosis. The results of study illustrate the current trends of the literature and discuss the possibility of the computer-based screening and diagnosis to partially make up for the expert-personnel shortage
基金Selected from Proceedings of the 7th International Conference on Frontiers of Design and Manufacturing (ICFDM'2006)This project is supported by National Natural Science Foundation of China (No.50775047)Scientific and Technological Foundation of Guangdong Province,China(No.2004B10201032).
文摘A CNC simulation system based on intemet for operation training of manufacturing facility and manufacturing process simulation is proposed. Firstly, the system framework and a rapid modeling method of CNC machine tool are studied under the virtual environment based on PolyTrans and CAD software. Then, a new method is proposed to enhance and expand the interactive ability of virtual reality modeling language（VRML） by attaining communication among VRML, JavaApplet, JavaScript and Html so as to realize the virtual operation for CNC machine tool. Moreover, the algorithm of material removed simulation based on VRML Z-map is presented. The advantages of this algorithm include less memory requirement and much higher computation. Lastly, the CNC milling machine is taken as an illustrative example for the prototype development in order to validate the feasibility of the proposed approach.
