The present article is designed to be a contribution to the chapter 'Combinatorial Matrix Theory and Graphs' of the Handbook of Linear Algebra, to be published by CRC Press. The format of the handbook is to give just definitions, theorems, and examples; no proofs. In the five sections given...

In the extant literature a suggestion has been made to solve the nearest correlation matrix problem by a modified von Neumann approximation. This paper shows that obtaining the nearest positive semi-definite matrix from a given non-positivesemi-definite correlation matrix by such a method is...

We describe an efficient method for estimating enterprise input-output tables for cases when only information on marginal totals is available. In order to estimate the production structure of enterprises, we utilize engineering knowledge to construct a qualitative prior containing 1 wherever an...

Investitionen bilden einen wesentlichen Bestandteil für das wirtschaftliche Wachstum einer Volkswirtschaft. Detaillierte Untersuchungen zu Strukturänderungen der Investitionstätigkeit von Wirtschaftszweigen liefern daher wesentliche Einblicke in wirtschaftliche Entwicklungstendenzen und...