Special issue: Uncertainties in geometric design

Special issue: Uncertainties in geometric design

In computing, it is a basic fact that, owing to the finiteness in representation, errors occur and they accumulate. In geometric computing, the 'logic' for performing set operations is not necessarily the classical binary one. How, then, does one ensure a robust process, if not error-free results? Physically, uncertainty in geometric data manifests itself in metrological studies in the small, a...

Special issue on geometric constraints and reasoning

This special issue in CGTA follows the fourth edition of the special track: Geometric Constraints and Reasoning, in the 24th Annual ACM Symposium on Applied Computing, which took place in Honolulu, Hawaii, USA, March 9–12, 2009. Geometric Constraints and Reasoning is devoted to the recent trends in the domain of geometric constraint solving (GCS) and automated, or computer aided, deduction in g...

Special Issue

Special Issue on Human Work Interaction Design

IFIP 13.6 Human Work Interaction Design (HWID) is a working group, which aims to establish relationships between empirical work-domain studies and Human Computer Interaction (HCI) design. Our concern is to extend the long tradition of HCI to study the connections between interaction design and the work context, in the light of the fact that the world that we work in has become much more digital...

Special Issue on Robust Geometric Algorithms and their Implementations

The robust implementation of geometric algorithms is highly nontrivial. There are several reasons for this: theoretical algorithms (i.e., algorithms on paper) traditionally assume error-free real computations, at constant time cost per operation, and data in general position. All three assumptions do not hold in the real world (i.e., algorithms on silicon). So implementors face the tasks of (1)...