The forest rotations problem has been considered by generations of economists (Fisher, 1930; Boulding, 1966; Samuelson, 1976). Traditionally, the forest resource across all future harvest periods is assumed to grow without memory of past harvest periods. This paper integrates economic theory and intertemporal ecological mechanics, linking current harvest decisions with future forest growth, fin...

Introduction Three quarters of the farmers in developing countries cultivate less than five acres. The productivity of these small farmers is the key to practical sustainable solutions to the growing problem of food security in the world. In light of this, it is remarkable that the critical needs of microfarmers have for so long been ignored, both by both the development establishment influence...

A fluid approximation gives the main term in the asymptotic expression of the value function for a controllable stochastic network. The policies which have the same asymptotic of their value functions as the value function of the optimal policy, are called asymptotically optimal policies. We consider a problem of finding from this set of asymptotically optimal policies a best one in the sense t...

We study the asymptotic optimal control of multi-class restless bandits. A restless bandit is acontrollable process whose state evolution depends on whether or not the bandit is made active. Theaim is to find a control that determines at each decision epoch which bandits to make active in orderto minimize the overall average cost associated to the states the bandits are in. Sinc...

Economically optimal management of a continuous cover forest is considered here. Initially, there is a large number of trees of different sizes and the forest may contain several species. We want to optimize the harvest decisions over time, using continuous cover forestry, which is denoted by CCF. We maximize our objective function, the expected present value, with consideration of stochastic p...

This study aims to determine the optimal frequency of purchasing raw materials for Cup 220 ml and Straw using Economic Order Quantity (EOQ) method at PT. Bandangantirta Agung, Harvest Dew Prosperity Mandrapurna Aditama. The type data used is quantitative data, with qualitative research methods. results obtained purchases from three companies, PT Panen Embun Kemakmuran which get compared other c...

Forest harvest planning to maximize economic benefits also has to consider additional criteria such as the biodiversity functioning of the managed forest. The biodiversity requirements are determined by the size, shape, and distribution of harvest units and forest stands. A multiple criteria approach is presented where the harvesting volume is maximized while the environmental aspects are also ...