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Upward and dominance drawings of acyclic digraphs find important applications in the display of hierarchical structures such as PERT diagrams, subroutine-call charts, and is-a relationships. The combinatorial model underlying such hierarchical structures is often a series-parallel digraph. In this paper the problem of constructing upward and dominance drawings of series-parallel digraphs is investigated...
Objective: Duration of untreated illness represents a potentially modifiable component of any diagnosis‐treatment pathway. In bipolar disorder (BD), this concept has rarely been systematically defined or not been applied to large clinically representative samples.
Method: In a well‐characterized sample of 501 patients with BD, we estimated the duration of untreated bipolar disorder (DUB: the interval...
Abstract. We present a general technique for dynamizing a class of problems whose underlying structure is a computation graph embedded in a tree. We introduce three fully dynamic data structures, called path attribute systems, tree attribute systems, and linear attribute grammars, which extend and generalize the dynamic trees of Sleator and Tarjan. More specifically, we associate values, called attributes,...
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