Titlebook: Geometric Modelling; Theoretical and Comp Fumihiko Kimura (Chairman) Book 2001 IFIP International Federation for Information Processing 200

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Degeneracy and Instability in Geometric Computations correctly. Another approach places high priority on the topological consistency, and use numerical values only when they do not contradict the topological structure. Merits and demerits of the two approaches are discussed with examples.

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Semantic and multiple-view feature modelling: towards more meaningful product modelling the meaning, or semantics, of each feature in a model. . is an approach to support more product development phases. In the views, feature models can be used that contain high-level information. These approaches result in more meaningful product modelling, both in the sense of the models that are created, and in the sense of how these are created.

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Solid Modeling Using Boundary Integral Equationsf functions of low order are used. The complicated and smooth free-form surface of the solid model can be expressed by only one surface patch. In order to investigate the efficiency of this method, several examples are presented.

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https://doi.org/10.1007/978-3-658-45558-3ng performed at Seoul National University to overcome this limitation are discussed in this presentation. Their goal is to provide the current CAD systems with the capabilities for design process modeling, evolutionary design using design intent and accumulated information, and case-based reasoning.