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Showing papers by "Istanbul Technical University published in 1975"


Journal ArticleDOI
TL;DR: Respiration and photosynthesis rates of the bioassay communities developed in situ, are found to be significant response parameters of the toxicity in the Golden Horn estuary.

6 citations


Journal ArticleDOI
TL;DR: In this article, the authors present a model to determine the optimal number, size, location and allocation of central places in industrial economies, which is based upon the minimization of the total cost (sum of the manufacturing cost and distribution cost).
Abstract: This paper presents a model to determine the optimal number, size, location and allocation of central places in industrial economies. We consider a hierarchy of central places ranging from towns, cities and a regional capital. The model is based upon the minimization of the total cost (sum of the manufacturing cost and distribution cost). The manufacturing cost is taken as a function of city size and the optimal distribution of manufacturing firms is the same as the optimal distribution of central places. The total cost function is a non-linear one and it has integer variables. A heuristic procedure is described for the solution. To extend the model into a more generalized form by including other activities is also discussed.

2 citations