本文介绍了将人工智能技术与分子图形学技术相结合,在IBM PC/XT个人计算机上实现的三维分子模型显示系统PMMB(Perception for Molecular Model Building)。该系统以接近于化学自然语言的化学结构线型编码作为输入,然后运用拓扑图感知技...本文介绍了将人工智能技术与分子图形学技术相结合,在IBM PC/XT个人计算机上实现的三维分子模型显示系统PMMB(Perception for Molecular Model Building)。该系统以接近于化学自然语言的化学结构线型编码作为输入,然后运用拓扑图感知技术自动识别出特殊的子结构,再借助于子结构模板库,运用子图拼接技术,自动地显示出要研究的分子的三维模型。该系统反应速度快,不需要大型X-射线晶体结构数据库的支持,具有对图形的修改、扩充子图库、存图等功能,输入数据简单、灵活,对软、硬件环境要求低,可以作为分子力学程序的前处理系统,也可以此研究分子构象及构效的关系。系统用Turbo Pascal语言实现。展开更多
[Objective] The aim was to explore the tourist destination image measurement method, and have an empirical study on Xi＇an City. [Method] With combination of non-structural and structured approach to design questionna...[Objective] The aim was to explore the tourist destination image measurement method, and have an empirical study on Xi＇an City. [Method] With combination of non-structural and structured approach to design questionnaires, tourism image of Xi＇an was explored using the SPSS software from both the qualitative and quantitative analyses. [Result] Xi＇an tourism images serve a heritage historical monuments atmosphere with the Terracotta Warriors, City Wall, Big Wild Goose Pagoda,Huaqing Hot Springs, presenting a positive feeling among tourists in general. In the dissemination of travel, tourism infrastructure construction, tourism transportation,travel services have negative effects on the image of Xi＇an tourism. [Conclusion]The evaluation on the tourism resources is highly spoken of by tourists than the scenic spot, indicating that despite high visibility of tourism resources in Xi＇an, it has not formed strong core competitiveness and a complete tourism industrial chain. It is necessary to take the right marketing strategies to enhance tourist familiarity to Xi＇an. Tourists demands, therefore, should be well considered in developing Xi＇an scenic spots and new tourism products and projects be focused on to improve tourists＇ satisfaction.展开更多
文摘本文介绍了将人工智能技术与分子图形学技术相结合,在IBM PC/XT个人计算机上实现的三维分子模型显示系统PMMB(Perception for Molecular Model Building)。该系统以接近于化学自然语言的化学结构线型编码作为输入,然后运用拓扑图感知技术自动识别出特殊的子结构,再借助于子结构模板库,运用子图拼接技术,自动地显示出要研究的分子的三维模型。该系统反应速度快,不需要大型X-射线晶体结构数据库的支持,具有对图形的修改、扩充子图库、存图等功能,输入数据简单、灵活,对软、硬件环境要求低,可以作为分子力学程序的前处理系统,也可以此研究分子构象及构效的关系。系统用Turbo Pascal语言实现。
基金Supported by National Social and Science Foundation of China(13XSH017)Humanities and Social Sciences Research Foundation of the Ministry of Education(10YJAZH041)Social Science Foundation of Shaanxi(12D271)~~
文摘[Objective] The aim was to explore the tourist destination image measurement method, and have an empirical study on Xi＇an City. [Method] With combination of non-structural and structured approach to design questionnaires, tourism image of Xi＇an was explored using the SPSS software from both the qualitative and quantitative analyses. [Result] Xi＇an tourism images serve a heritage historical monuments atmosphere with the Terracotta Warriors, City Wall, Big Wild Goose Pagoda,Huaqing Hot Springs, presenting a positive feeling among tourists in general. In the dissemination of travel, tourism infrastructure construction, tourism transportation,travel services have negative effects on the image of Xi＇an tourism. [Conclusion]The evaluation on the tourism resources is highly spoken of by tourists than the scenic spot, indicating that despite high visibility of tourism resources in Xi＇an, it has not formed strong core competitiveness and a complete tourism industrial chain. It is necessary to take the right marketing strategies to enhance tourist familiarity to Xi＇an. Tourists demands, therefore, should be well considered in developing Xi＇an scenic spots and new tourism products and projects be focused on to improve tourists＇ satisfaction.
