| Pierce, J. (2000). Personal communication. |
....widgets, and borrowing design ideas from 2 D 104 PRESENCE: VOLUME 10, NUMBER 1 user interfaces. The magic approach involves designing interaction techniques around cultural cliches and metaphors the #ying carpet and magic wand metaphors as well as conscious violation of user assumptions (Pierce, personal communication, 2000). Although these techniques allow us to design only short term, and often ad hoc, solutions, they do provide a foundation for the scienti#c scrutiny that can analyze, categorize, and evaluate proposed ideas and techniques, giving rise to the systematic approach to interface design as discussed ....
Pierce, J. (2000). Personal communication.
....provided information on the location of pointers, they assume that any bit pattern that could be a valid pointer in fact is a valid pointer. While the advantage of using garbage collectors over explicit storage management is obvious, using garbage collectors might incur more runtime overhead. Zorn [8, 7] recently compared the Boehm Demers Weiser conservative garbage collector (BDWGC) 3] with several other explicit storage management algorithms. His latest data [8] show that on several large programs written for explicit storage management, BDWGC runs about 5 40 slower than the best explicit ....
....garbage collectors over explicit storage management is obvious, using garbage collectors might incur more runtime overhead. Zorn [8, 7] recently compared the Boehm Demers Weiser conservative garbage collector (BDWGC) 3] with several other explicit storage management algorithms. His latest data [8] show that on several large programs written for explicit storage management, BDWGC runs about 5 40 slower than the best explicit storage management algorithm. Indeed, this should not be surprising. In its standard configuration, this collector attempts to allocate approximately one quarter of ....
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Benjamin G. Zorn. Univ. of Colorado at Boulder, personal communication, 1993.
....for the tracking system. Distraction is good. 1 Were it not for the attention shift commands, the entire visual system would experience extreme tunnel vision, remaining locked onto a single region of space. The activity of the attention shift mechanism is very easy to note in young children. [Mel95] They are very easily distracted by motion, and will saccade towards waving hands, waggling eyebrows, and other rapid movements. Clearly, a very useful filter to have is a motion detector. It makes particular sense for Reubens to have a motion detector, given that it is designed to interact with ....
Joshua Benjamin Melnick. personal communication, May 1995.
.... to the recursive type ff: also belong to the once unrolled version of that type [ ff: ff] This rule is natural according to the intuitive semantics of the recursive type, but it makes type checking considerably more difficult [4] and it restricts the possible models of the type theory [21]. The usual solution to this difficulty is to use explicit fold and unfold operations between ff: and [ ff: ff] but this solution cannot be applied directly in my setting: If e has type ff: then unfold e has type [ ff: ff] but neither e nor unfold e has the required type ff: ....
Benjamin C. Pierce. Personal communication, 1998.
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