The National Institute of Standards and Technology (NIST) has built numerous software toolkits and applications for manipulating STEP and EXPRESS data. These toolkits are traditionally used as compiled libraries which are linked to other compiled modules. This paper describes a binding allowing the toolkit interfaces to be called from interpreted scripts. This significantly reduces the time req...

Through a study of web site design practice, we observed that web site designers employ multiple representations of web sites as they progress through the design process, and that these representations allow them to focus on different aspects of the design. Designers also employ multiple tools during the course of a design project, including graphic design, web development, presentation, and wo...

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Background Research projects often involve observation, registration, and data processing starting from information obtained in field experiments. In many cases, these tasks are carried out by several persons in different places, times, and ways, adding different levels of complexity and error in data collecting. Furthermore, data processing can be time consuming, and input errors may produce u...

Developing interactive programs is difficult because of the poor support for programming interactions in programming languages and the poor support for creative graphic design in traditional toolkits. This paper presents the Hierarchical State Machine Toolkit (HsmTk), a toolkit targeting the development of rich interactions. HsmTk has been designed to accommodate the needs of its users, namely ...

Bixby and Cunningham showed that a 3-connected binary matroid M is graphic if and only if every element belongs to at most two non-separating cocircuits. Likewise, Lemos showed that such a matroid M is graphic if and only if it has exactly r(M) + 1 nonseparating cocircuits. Hence the presence inM of either an element in at least three non-separating cocircuits, or of at least r(M) + 2 non-separ...

It is well known that the fund of knowledge of what it is now known as Graphic Design has been assembled from many other disciplines. On the one hand, it is possible to talk about subjects that have remained fairly stable over time, subjects such as semiotics[4] or visual rhetoric[5] that have given a theoretical foundation to a predominantly praxis-oriented and intuition-driven discipline,[6] ...