According to the features of the turning simulation, a simplified Whitted lighti ng model is proposed based on the analysis of Phong and other local illumination model. Moreover, in order to obtain the natural lightin...According to the features of the turning simulation, a simplified Whitted lighti ng model is proposed based on the analysis of Phong and other local illumination model. Moreover, in order to obtain the natural lighting effects, local ray tra cing algorithm is given to calculate the light intensity of every position durin g the course of the simulation. This method can calculate the refresh area befor e calculating the intersection line, simulate the machining environment accurate ly and reduce the calculating time. Finally, an example of the virtual cutting s cene is shown to demonstrate the effects of the global illumination model. If th e CUP is 1.3 G and the internal memory is 128 M, the refreshing time of virtual turning scene can be reduced by nine times.This study plays an important role in the enrichment of the virtual manufacturing theory and the promotion of the dev elopment of the advanced manufacturing technology.展开更多
Through the analysis and comparison of shortcomings and advantages of existing technologies on object modeling in 3D applications,we propose a new modeling method for virtual scene based on multi-view image sequence t...Through the analysis and comparison of shortcomings and advantages of existing technologies on object modeling in 3D applications,we propose a new modeling method for virtual scene based on multi-view image sequence to model irregular objects efficiently in 3D application.In 3D scene,this method can get better visual effect by tracking the viewer's real-time perspective position and projecting the photos from different perspectives dynamically.The philosophy of design,the steps of development and some other relevant topics are discussed in details,and the validity of the algorithm is analyzed.The results demonstrate that this method represents more superiority on simulating irregular objects by applying it to the modeling of virtual museum.展开更多
目的了解游戏化教学在护理教育中的应用现状及效果,为开展游戏化教学相关研究提供参考。方法根据范围综述的研究方法,计算机检索PubMed、Cochrane Library、Web of Science、Embase、CINAHL、中国知网、中国生物医学文献数据库、万方数...目的了解游戏化教学在护理教育中的应用现状及效果,为开展游戏化教学相关研究提供参考。方法根据范围综述的研究方法,计算机检索PubMed、Cochrane Library、Web of Science、Embase、CINAHL、中国知网、中国生物医学文献数据库、万方数据、维普网中有关游戏化教学在护理教育中应用的文献,检索时限为建库至2024年2月27日,并对文献进行筛选、汇总及分析。结果共纳入15篇文献,游戏化教学的主要类型包括传统游戏、虚拟仿真实践、情景模拟、角色扮演、数字化在线教育平台;游戏化教学在提升理论实践能力、综合素质及情感态度方面都呈现积极效果。但目前教学评价工具还未统一标准。结论游戏化教学在国内外护理教育的应用较广泛,其教学有效性得到了初步证实,但在游戏化教学资源的开发、评价系统及教学设计等方面还需要进一步的完善和优化。展开更多
文摘According to the features of the turning simulation, a simplified Whitted lighti ng model is proposed based on the analysis of Phong and other local illumination model. Moreover, in order to obtain the natural lighting effects, local ray tra cing algorithm is given to calculate the light intensity of every position durin g the course of the simulation. This method can calculate the refresh area befor e calculating the intersection line, simulate the machining environment accurate ly and reduce the calculating time. Finally, an example of the virtual cutting s cene is shown to demonstrate the effects of the global illumination model. If th e CUP is 1.3 G and the internal memory is 128 M, the refreshing time of virtual turning scene can be reduced by nine times.This study plays an important role in the enrichment of the virtual manufacturing theory and the promotion of the dev elopment of the advanced manufacturing technology.
文摘Through the analysis and comparison of shortcomings and advantages of existing technologies on object modeling in 3D applications,we propose a new modeling method for virtual scene based on multi-view image sequence to model irregular objects efficiently in 3D application.In 3D scene,this method can get better visual effect by tracking the viewer's real-time perspective position and projecting the photos from different perspectives dynamically.The philosophy of design,the steps of development and some other relevant topics are discussed in details,and the validity of the algorithm is analyzed.The results demonstrate that this method represents more superiority on simulating irregular objects by applying it to the modeling of virtual museum.
文摘目的了解游戏化教学在护理教育中的应用现状及效果,为开展游戏化教学相关研究提供参考。方法根据范围综述的研究方法,计算机检索PubMed、Cochrane Library、Web of Science、Embase、CINAHL、中国知网、中国生物医学文献数据库、万方数据、维普网中有关游戏化教学在护理教育中应用的文献,检索时限为建库至2024年2月27日,并对文献进行筛选、汇总及分析。结果共纳入15篇文献,游戏化教学的主要类型包括传统游戏、虚拟仿真实践、情景模拟、角色扮演、数字化在线教育平台;游戏化教学在提升理论实践能力、综合素质及情感态度方面都呈现积极效果。但目前教学评价工具还未统一标准。结论游戏化教学在国内外护理教育的应用较广泛,其教学有效性得到了初步证实,但在游戏化教学资源的开发、评价系统及教学设计等方面还需要进一步的完善和优化。
