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Determination of indices weights is crucial to the comprehensive evaluation. Specifically for construction machinery, a new combinatorial weighting method for comprehensive evaluation is put forward in this paper, which combines subjective and objective weighting methods with techniques of fuzzy number judgment matrix, Friedman consistency test and Spearman ranking correlation coefficient. A case...
Scene Management is the spirit of the 3D engine. Its design is directly affects the efficiency of rendering and conflict detection. If we don't manage the object in the scene specially or we just use the link-list to manage the object simplify, all of the object in the scene need to be clipped, transformed, lighted and doing raster by the graph disposing pipe-line. This simple method of scene management...
Taking crawler crane as subject investigated, this paper presents the integration of modularizing and parameterizing design technology, by which crawler crane is parameterized and disassembled into several modules. Several modules build up a design element, and then many design elements forms into a advanced design unit. Added to these, advanced program language and redevelopment technology of Solid...
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