this paper demonstrates a preliminary investigation of geometry, function and its relation to dfx principles, namely dfm (design for manufacturing). this is the starting point for research on the development of an expert system that assesses design goals along dfx principles in a feature-based cad environment. there is a need for a deeper level of understanding of the relationship between geome...

A common approach to providing persistent storage for RDF is to store statements in a three-column table in a relational database system. This is typically referred to as a triple store. There are many variations on this approach, e.g., storing literals and URI’s in a separate table referenced from the triple store. But, the basic approach is that each RDF statement maps onto a single row in a ...

Dynamic Programming solves combinatorial optimization problems by recursive decomposition and tabulation of intermediate results. The first step in the design of a dynamic programming algorithm is to decide on the set of tables that will hold optimal solutions to subproblems. This step predetermines the shape of the dynamic programming recurrences as well as the asymptotic efficiency of the alg...

A challenge in computer-aided design is how to parameterize shape functions in order to model a desired shape. Such design phases often include both systematic design and user-oriented design. In the paper, we want to focus on the latter case by bringing ontology-based decision rules to a computer-aided design system. Domain specific constraints and operative rules will be modelled in an artefa...

Two visualization techniques for the independence problem in 2-way contingency tables—assocation and mosaic plots—are extended in two directions: 1. The visualization is enhanced by displaying the significance of an appropriate test for independence and by using improved color schemes. 2. The implementation in the R system is improved using a more modular design and allowing for more flexible s...