In the conceptual design phase, designers not only require an easy way to construct a freeform surface, but also need to modify it intuitively. In this paper, a feature based freeform surface design method is proposed in order to fit the requirement. First, a freeform feature library is introduced as the basis of the system. Freeform features in the library can either be extracted from existing...

We present evidence that attributes that are known to the file system when a file is created, such as its name, permission mode, and owner, are often strongly related to future properties of the file such as its ultimate size, lifespan, and access pattern. More importantly, we show that we can exploit these relationships to automatically generate predictive models for these properties, and that...

Similar to research on risky choice, the traditional analysis of intertemporal choice takes the view that an individual behaves so as to maximize the discounted sum of all future utilities. The well-known Allais paradox contradicts the fundamental postulates of maximizing the expected value or utility of a risky option. We describe a violation of the law of diminishing marginal utility as well ...

Predictions of diametral errors in turning often assume that these errors are solely due to bending of the workpiece and tool. However, recent studies indicate that this cannot explain observed diametral errors in short workpieces. This paper presents an empirical study of the effect of cutting parameters and workpiece materia l on diametral errors. Steel and aluminum samples were machined at d...

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In this paper we explore the subject of question asking as an inherent driver of enterprise modelling sessions, within the narrower context of the ‘dialogue game’ approach to collaborative modelling. We explain the context, but mostly report on matters directly concerning question asking and answer pre-structuring as a central issue in an ongoing effort aiming for the practiceoriented developme...

Rational choice and hermeneutics seem at odds, but the tension can be fruitfully resolved. The conflict between them closely mirrors the earlier conflict between historicism and positivism. In interwar Vienna, an influential group of social scientists tried to combine the best elements of both approaches. Rational choice was united with Verstehen and the method of ideal types, as evidenced by t...