A generalized Pólya algorithm

AbstractIt is shown that the convergence of several standard algorithms for the construction of a best approximation to a continuous function on an interval can be established by applying a single theorem which extends the result of Pólya from convergence of sequences of best Lp approximations to that of best approximations with respect to any pointwise convergent sequence of norms. In particular, the convergence of both the first and second Rémès algorithms is obtained as an application of the theorem

Incremental development and prototyping in current laboratory software development projects: Preliminary analysis

Several Laboratory software development projects that followed nonstandard development processes, which were hybrids of incremental development and prototyping, are being studied. Factors in the project environment leading to the decision to use a nonstandard development process and affecting its success are analyzed. A simple characterization of project environment based on this analysis is proposed, together with software development approaches which have been found effective for each category. These approaches include both documentation and review requirements

Intelligence/Electronic Warfare (IEW) direction-finding and fix estimation analysis report. Volume 2: Trailblazer

An analysis of the direction finding (DF) and fix estimation algorithms in TRAILBLAZER is presented. The TRAILBLAZER software analyzed is old and not currently used in the field. However, the algorithms analyzed are used in other current IEW systems. The underlying algorithm assumptions (including unmodeled errors) are examined along with their appropriateness for TRAILBLAZER. Coding and documentation problems are then discussed. A detailed error budget is presented