Nowadays, more and more digitalized spatial data are sold and transmitted on the Internet. Thus, there arises an important issue about copyright protection of the digital data. To solve this problem, this paper has de...Nowadays, more and more digitalized spatial data are sold and transmitted on the Internet. Thus, there arises an important issue about copyright protection of the digital data. To solve this problem, this paper has designed and implemented a spatial data watermarking service (SDWS) system which can provide a secure framework for data transaction and transfer via the Internet and protect the rights of both copyright owners and consumers at the same time.展开更多
Considering the effects of particle crushing and intermediate principal stress on material yielding strength, the spatial mobilization plane(SMP) yielding criterion and state parameter model including a general critic...Considering the effects of particle crushing and intermediate principal stress on material yielding strength, the spatial mobilization plane(SMP) yielding criterion and state parameter model including a general critical state line are selected in the analysis of cylindrical cavity expansion.Meanwhile, combining Rowe s flow rule and Bolton s simplification to stress-dilatancy relationship to reflect soil shear dilatancy and softening behavior, this paper analyzes the problem of cylindrical cavity expansion i...展开更多
This study explores the interaction between spatial configuration,natural mobility,and visual accessibility in exhibition spaces,an area that remains underexplored.By integrating visibility graph analysis(VGA),intelli...This study explores the interaction between spatial configuration,natural mobility,and visual accessibility in exhibition spaces,an area that remains underexplored.By integrating visibility graph analysis(VGA),intelligent agent simulation(IAS),topological analysis,and field observation,the research examines functional layout and accessibility across four museums.Findings indicate that corridors and pathways,second only to exhibition halls,play a crucial role in spatial mobility.Composite layouts(e.g.,circular and L-shaped designs)exhibit superior mean depth and integration,yet connectivity and mean depth demonstrate a nonlinear relationship.Elongated or complex path turns increase cognitive load,complicating navigation,while open passageways promote smoother visitor distribution.Topological analysis effectively identifies optimal nodes,key locations,and path-turn efficiency under accessibility constraints.Visitor dwell time is shaped not only by exhibit content but also by spatial location,entry sequence,and visitor density.Results support the assumption that space syntax models align with realworld visitor flow patterns,yet predictive models fail to fully capture variations in mobility across different timeframes and behavioral contexts.These insights contribute to optimizing museum design for improved visitor experience and spatial efficiency.展开更多
基金Supported by the National High Technology Research and Development Program of China(No.2006AA12Z210)
文摘Nowadays, more and more digitalized spatial data are sold and transmitted on the Internet. Thus, there arises an important issue about copyright protection of the digital data. To solve this problem, this paper has designed and implemented a spatial data watermarking service (SDWS) system which can provide a secure framework for data transaction and transfer via the Internet and protect the rights of both copyright owners and consumers at the same time.
基金Supported by National Natural Science Foundation of China (No. 50639010)PhD Start-up Research Fund of Northeast Dianli University (2010)
文摘Considering the effects of particle crushing and intermediate principal stress on material yielding strength, the spatial mobilization plane(SMP) yielding criterion and state parameter model including a general critical state line are selected in the analysis of cylindrical cavity expansion.Meanwhile, combining Rowe s flow rule and Bolton s simplification to stress-dilatancy relationship to reflect soil shear dilatancy and softening behavior, this paper analyzes the problem of cylindrical cavity expansion i...
基金funded by the 2024 Individual Academic Enhancement Project of the University Project Pool,entitled“Reproduction and Reconstruction of Historical and Cultural Spaces in the Theoretical Perspective of the Field of Memory(Grant No.24XSC14)”the R&D Program of Beijing Municipal Education Commission(Grant No.SZ202110009003).
文摘This study explores the interaction between spatial configuration,natural mobility,and visual accessibility in exhibition spaces,an area that remains underexplored.By integrating visibility graph analysis(VGA),intelligent agent simulation(IAS),topological analysis,and field observation,the research examines functional layout and accessibility across four museums.Findings indicate that corridors and pathways,second only to exhibition halls,play a crucial role in spatial mobility.Composite layouts(e.g.,circular and L-shaped designs)exhibit superior mean depth and integration,yet connectivity and mean depth demonstrate a nonlinear relationship.Elongated or complex path turns increase cognitive load,complicating navigation,while open passageways promote smoother visitor distribution.Topological analysis effectively identifies optimal nodes,key locations,and path-turn efficiency under accessibility constraints.Visitor dwell time is shaped not only by exhibit content but also by spatial location,entry sequence,and visitor density.Results support the assumption that space syntax models align with realworld visitor flow patterns,yet predictive models fail to fully capture variations in mobility across different timeframes and behavioral contexts.These insights contribute to optimizing museum design for improved visitor experience and spatial efficiency.
