منابع مشابه
D-optimal weighing designs for four and five objects
For j = 4 and j = 5 and all d j, the maximum value of detXX , where X runs through all j d (0,1)-matrices, is determined along with a matrix X0 for which the maximum determinant is attained. In the theory of statistical designs, X0 is called a D-optimal design matrix. Design matrices that were previously thought to be D-optimal, are shown here to be D-optimal.
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The focus of this paper is the analysis of circular cylinders through sets of points in three dimensions. This investigation has a number of motivations. Clearly, if a cylinder of radius R and direction t passes through a set of points P , it means also that there is a line of direction t tangent to the sphere of radius R and centered at the points of P . Another interpretation is that an obser...
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ژورنال
عنوان ژورنال: Bulletin of the Psychonomic Society
سال: 1993
ISSN: 0090-5054
DOI: 10.3758/bf03337359