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For the issues of information semantic conflict and inconsistency generated by model differences in the current cable harness wiring process of complex mechatronic products, a construction technology of cable harness information integrated model based on ontology is proposed. The differences between the traditional cable harness wiring mode and assembly process of cable harness based on virtual prototype...
The on-orbit demonstration technology is explored and studied for a space-biology nanosatellite, which is being developed by Nanjing University of Science and Technology and Fujian Academy of Agricultural Sciences to monitor the growth and metabolism of Azolla. Firstly, the space biology related experiments performed by NASA using CubeSats are reviewed. Then, the objective of the space biology experiment...
Two methods is proposed to modify the shape of combined subdivision surface. One is to realize the shape modification of the combined subdivision surface by editing the curve network and updating the surface by the overlapping subdivision method, and the other one combines vertex constraint with the shape optimization method based on discrete PDE(partial differential equation), and realizes the shape...
Combined with the research of computer aided design and the related practiced application facing medium and small size enterprise, aiming at the problems of being easy to create ambiguous understanding to the description of partial design task, the management and exchanges of design need professional co-operational working platform, being difficult to modify the result of whole design, the collaborative...
Nonuniform combined subdivision scheme(NCSS) is presented to enhance the interpolation function on curve networks. Nonuniform second difference operator and nonuniform correction operator are proposed separately based on second difference operator and the correction algorithm in order to generate more fairing interpolating surfaces. The improvement of operator Q is help to implement the interpolation...
In this paper we present a novel approach to build the standard crown database based on the sketch of the standard tooth, and then deform the crown to fit the patient using an efficient volumetric approach. Take example for the mandibular first molar, some key lines are collected from standard tooth pictures. Then we edit these lines to build the skeleton of the digital tooth model, and convert the...
This paper demonstrates the basic theory and principles of R&D evaluation. Based on view of supporting science and technology innovation, the paper designs the evaluation indicators systematically, the indicators covers individual, group and institute three levels. Beyond that, the evaluation system also includes indicators for innovation behaviors and process.
In this paper we develop an original dental CAD/CAM system to Design and Manufacture the framework of PFM (porcelain fused to metal) fixed bridge in Computer. Take example for the missing of the mandibular first molar, firstly, we use ATOS II 3D scanner to measure the 3D data of the abutment teeth which is used to design the coping crowns. Secondly, a relevant standard bridge is selected from the...
In this paper we develop an original dental CAD/CAM system for design and manufacture the framework of PFM (porcelain fused to metal) fixed bridge in computer. Take example for the missing of the mandibular first molar, firstly, we use ATOS II 3D scanner to measure the 3D data of the abutment teeth which is used to design the coping crowns. Secondly, a relevant standard bridge is selected from the...
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