According to the necessity of flexible workflow management system, the solution to set up the visualized workflow modelling system based on B/S structure is put forward, which conforms to the relevant specifications o...According to the necessity of flexible workflow management system, the solution to set up the visualized workflow modelling system based on B/S structure is put forward, which conforms to the relevant specifications of WfMC and the workflow process definition meta-model. The design for system structure is presented in detail, and the key technologies for system implementation are also introduced. Additionally, an example is illustrated to demonstrate the validity of system.展开更多
The paper presents the description of a research work that has its main objective as the development of a technological tool for supporting building maintenance with resort to new information and visualization technol...The paper presents the description of a research work that has its main objective as the development of a technological tool for supporting building maintenance with resort to new information and visualization technologies. Three main components of the building were analyzed： roof, facades and interior walls. The ceramic tile roof covering constitutes a component of the building envelope and fulfils an important function in its performance, namely in its protection against the permeation of moisture and rain water. Facade coating plays a significant role in the durability of buildings, since it constitutes the exterior layer that ensures wall protection against aggressive actions of physical, chemical or biological nature. The paint coating, applied to interior walls while improving their aesthetic character, performs an important function of protection against deterioration agents related to building use. A survey was conducted of the main anomalies that occur in these components, their respective causes and the adequate interventions, in order to plan maintenance strategies. The collected information serves as a basis for the implementation of applications using interactive visualization technologies to support the planning of building maintenance. During this work, the basic knowledge related to the materials, the techniques of rehabilitation and conservation and the planning of maintenance is outlined and discussed. In addition, methods of interconnecting this knowledge with the virtual applications were explored. The implemented prototypes were tested in real cases. This research work provides an innovative contribution to the field of maintenance, supported by emergent virtual reality technology.展开更多
The structure of global lithosphere is very important to the scientific researches of tectonic movement, geodynamic process, mantle convection, resource exploration, and disaster prevention and reduction. Three-dimens...The structure of global lithosphere is very important to the scientific researches of tectonic movement, geodynamic process, mantle convection, resource exploration, and disaster prevention and reduction. Three-dimensional (3D) spatial modelling and visualization is an effective tool for lithosphere researches. However, both the isoline/profile methods and the Euclidean-based 3D modelling methods cannot meet the requirement of real 3D modeling of global lithosphere, whereas the recently developed global 3D grid methods have some defects on grid design, such as grid shrinkage, overlapping, non-orthogonality, and nonlatitude-longitude consistency. In this paper, Spheroid Degenerated-Octree Grid (SDOG), a non-overlapping, non-shrinking, orthogonal, latitude-longitude consistent grid in the spheroidal manifold space, was chosen as the basic grid for global lithosphere 3D modeling and visualization. The SDOG-based methods of spatial representation and modelling of lithosphere were proposed. A multi-scale model of lithosphere was designed, and the multi-scale modeling and multi-mode visualization were realized at the full advantages of SDOG in multi-hierarchical and multi-resolution and the properties of lithosphere in multi-semantic. It shows that (1) the SDOG-based method has not only overcome the defects of the current global 3D grid, but also reflected the spherical features of lithosphere more realistically and naturally than the traditional methods, providing a novel solution for global modeling, numeric simulating, and data sharing of lithosphere; and (2) more detailed plates division, more precise geo-layer structure, plates boarder and surface concave-convex, and more rich lithosphere properties are revealed as the scale-model moves on.展开更多
基金Shanghai Municipal Science Committee key project(061612058,06JC14066,06DZ12001,061111006)Nationalscience and technology supporting project(2006BAF01A46)
文摘According to the necessity of flexible workflow management system, the solution to set up the visualized workflow modelling system based on B/S structure is put forward, which conforms to the relevant specifications of WfMC and the workflow process definition meta-model. The design for system structure is presented in detail, and the key technologies for system implementation are also introduced. Additionally, an example is illustrated to demonstrate the validity of system.
文摘The paper presents the description of a research work that has its main objective as the development of a technological tool for supporting building maintenance with resort to new information and visualization technologies. Three main components of the building were analyzed： roof, facades and interior walls. The ceramic tile roof covering constitutes a component of the building envelope and fulfils an important function in its performance, namely in its protection against the permeation of moisture and rain water. Facade coating plays a significant role in the durability of buildings, since it constitutes the exterior layer that ensures wall protection against aggressive actions of physical, chemical or biological nature. The paint coating, applied to interior walls while improving their aesthetic character, performs an important function of protection against deterioration agents related to building use. A survey was conducted of the main anomalies that occur in these components, their respective causes and the adequate interventions, in order to plan maintenance strategies. The collected information serves as a basis for the implementation of applications using interactive visualization technologies to support the planning of building maintenance. During this work, the basic knowledge related to the materials, the techniques of rehabilitation and conservation and the planning of maintenance is outlined and discussed. In addition, methods of interconnecting this knowledge with the virtual applications were explored. The implemented prototypes were tested in real cases. This research work provides an innovative contribution to the field of maintenance, supported by emergent virtual reality technology.
基金supported by National Basic Research Progam of China(Grant No. 2011CB707102)National Natural Science Foundation of China (Grant No. 40930104)
文摘The structure of global lithosphere is very important to the scientific researches of tectonic movement, geodynamic process, mantle convection, resource exploration, and disaster prevention and reduction. Three-dimensional (3D) spatial modelling and visualization is an effective tool for lithosphere researches. However, both the isoline/profile methods and the Euclidean-based 3D modelling methods cannot meet the requirement of real 3D modeling of global lithosphere, whereas the recently developed global 3D grid methods have some defects on grid design, such as grid shrinkage, overlapping, non-orthogonality, and nonlatitude-longitude consistency. In this paper, Spheroid Degenerated-Octree Grid (SDOG), a non-overlapping, non-shrinking, orthogonal, latitude-longitude consistent grid in the spheroidal manifold space, was chosen as the basic grid for global lithosphere 3D modeling and visualization. The SDOG-based methods of spatial representation and modelling of lithosphere were proposed. A multi-scale model of lithosphere was designed, and the multi-scale modeling and multi-mode visualization were realized at the full advantages of SDOG in multi-hierarchical and multi-resolution and the properties of lithosphere in multi-semantic. It shows that (1) the SDOG-based method has not only overcome the defects of the current global 3D grid, but also reflected the spherical features of lithosphere more realistically and naturally than the traditional methods, providing a novel solution for global modeling, numeric simulating, and data sharing of lithosphere; and (2) more detailed plates division, more precise geo-layer structure, plates boarder and surface concave-convex, and more rich lithosphere properties are revealed as the scale-model moves on.
