Pervasive and ubiquitous oscillations, mapping the repetitive variation in time of a specific state, are well known as abundant phenomena in research and practice. Motivated by the success of oscillators in the modelling, analysis and control of dynamical systems, we developed a related approach...

We consider a periodic review single‐item inventory model under stochastic demand. Every m periods, in the regular order period, fixed order costs are K. In the periods in‐between, the intraperiods, higher fixed order costs of LK$L>K$ apply. The literature on optimal inventory policies under...

Background: The remanufacturing plan of perfect cost makes reference to the remanufacturing plan of an optimal solution of the economic lot-sizing problem with remanufacturing (ELSR). In this paper, we address the problem of determining the quantities of the remanufacturing plan of perfect cost...

In this paper we develop an inventory model, to determine the optimal ordering quantities, for a set of two substitutable deteriorating items. In this inventory model the inventory level of both items depleted due to demands and deterioration and when an item is out of stock, its demands are...

Insgesamt zeichnet sich zu Beginn der UN-Dekade „Bildung für nachhaltige Entwicklung“(2005-2014) in den Umweltverbänden ein stärkerer Trend zur Integration derNachhaltigkeitsperspektive in die Bildungsarbeit ab. Dies manifestiert sich in einer Änderungder Themen- und Methodenpalette der...

Die Frage nach der Bedeutung von Kultur für das Konzept nachhaltiger Entwicklung istAusgangspunkt des vorliegenden Beitrags. Zwei divergente Beobachtungen gaben Anstoßfür die Formulierung dieser Fragestellung: erstens spielte in den Formulierungen des 1987vorgelegten Brundtland-Berichts, dem...