1 引言基于HTTP的WWW在信息定位和定界(informatlon locating and narrowing)上存在着单步定位和偏差定界的问题。这些问题在造成信息获取困难的同时.也造成了冗余信息传输的浪费。目前这一问题已成为关注的焦点之一。有许多工作(例如文...1 引言基于HTTP的WWW在信息定位和定界(informatlon locating and narrowing)上存在着单步定位和偏差定界的问题。这些问题在造成信息获取困难的同时.也造成了冗余信息传输的浪费。目前这一问题已成为关注的焦点之一。有许多工作(例如文[4])通过引入智能机制来提高信息检索效率,但是它关心的对象为数据库这样的良结构信息。展开更多
基于网络的计算机辅助教学朝着分布化、结构化、协同化方向发展,网络课件的合理建模和构造成为需要迫切解决的问题。该文提出了一个网络课件分层结构信息模型,把网络课件组织成具有课件目录层-课件页面层-媒体资源层三个层次的分层结构...基于网络的计算机辅助教学朝着分布化、结构化、协同化方向发展,网络课件的合理建模和构造成为需要迫切解决的问题。该文提出了一个网络课件分层结构信息模型,把网络课件组织成具有课件目录层-课件页面层-媒体资源层三个层次的分层结构模型,定义了两套标记语言M M L和PM L,其中M M L用于描述课件目录层,PM L用于描述课件页面层和媒体资源层,从而实现了对网络多媒体课件的建模和构造,该模型能有效地解决课件网络化中出现的一些问题。展开更多
With the purpose of enhancing effective collaboration between architects and structural engineers in the building design field, an integration tool was developed for supporting information exchange from architectural ...With the purpose of enhancing effective collaboration between architects and structural engineers in the building design field, an integration tool was developed for supporting information exchange from architectural model to structural model. The PKPM （Bopomofo acronym, a Chinese building design software） structural model and an industry foundation classes （IFC） data model were adopted and analyzed to design the framework of the integration tool. The technique of mixed program languages （C＋＋ and FORTRAN） was applied to developing the tool software, and the connectivity relationships and intersection nodes between the structural elements were optimized and simplified. A case study was implemented to illustrate the method to use the integration tool for information exchange from IFC-format architectural model to PKPM structural model. The results show that the tool can extract the information of architectural model and form a corresponding structural model. The presented method can help to enhance the modeline efficiency at the structural design phase.展开更多
文摘1 引言基于HTTP的WWW在信息定位和定界(informatlon locating and narrowing)上存在着单步定位和偏差定界的问题。这些问题在造成信息获取困难的同时.也造成了冗余信息传输的浪费。目前这一问题已成为关注的焦点之一。有许多工作(例如文[4])通过引入智能机制来提高信息检索效率,但是它关心的对象为数据库这样的良结构信息。
文摘基于网络的计算机辅助教学朝着分布化、结构化、协同化方向发展,网络课件的合理建模和构造成为需要迫切解决的问题。该文提出了一个网络课件分层结构信息模型,把网络课件组织成具有课件目录层-课件页面层-媒体资源层三个层次的分层结构模型,定义了两套标记语言M M L和PM L,其中M M L用于描述课件目录层,PM L用于描述课件页面层和媒体资源层,从而实现了对网络多媒体课件的建模和构造,该模型能有效地解决课件网络化中出现的一些问题。
基金Project(2006BAJ01B01-01) supported by the National Key Technologies R&D Program of China during the 11th Five-Year Plan Period
文摘With the purpose of enhancing effective collaboration between architects and structural engineers in the building design field, an integration tool was developed for supporting information exchange from architectural model to structural model. The PKPM （Bopomofo acronym, a Chinese building design software） structural model and an industry foundation classes （IFC） data model were adopted and analyzed to design the framework of the integration tool. The technique of mixed program languages （C＋＋ and FORTRAN） was applied to developing the tool software, and the connectivity relationships and intersection nodes between the structural elements were optimized and simplified. A case study was implemented to illustrate the method to use the integration tool for information exchange from IFC-format architectural model to PKPM structural model. The results show that the tool can extract the information of architectural model and form a corresponding structural model. The presented method can help to enhance the modeline efficiency at the structural design phase.
