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van Vuuren, J.H. (2007)

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This first issue of ORiON Volume 23 contains six interesting operational research papers ranging from methodological topics and applications in linear and goal programming as well as graph/network theory to potential future contributions as well as historical perspectives of operations research (OR) in South Africa. However, what makes this issue special is that it is dedicated to Emeritus Professor Gerhard Geldenhuys, a pioneer of OR in South Africa on the occasion of his 70th birthday — see the official dedication following directly on this editorial. All papers in this issue have been dedicated to Gerhard by the respective authors, whilst being subjected to the normal procedure of blind and anonymous peer review.

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