Extensive research has been devoted to economic production quantity (EPQ) problem. However, little atten-tion has been paid to problems where depreciation cost and process quality cost must be considered, simulta-neously. In this paper, we consider the economic production quantity model of minimizing the annual total cost subject to depreciation cost and process quality cost, where depreciation...

One of the most distinctive and defining features of coleoid cephalopods-squid, cuttlefish and octopus-is their inking behavior. Their ink, which is blackened by melanin, but also contains other constituents, has been used by humans in various ways for millennia. This review summarizes our current knowledge of cephalopod ink. Topics include: (1) the production of ink, including the functional o...

The production planning problem, that is, to determine the production rate of a factory in the future, requires an aggregate model for the production flow through a factory. The canonical model is the clearing function model based on the assumption that the local production rate instantaneously adjusts to the one given by the equilibrium relationship between production rate (flux) and work in p...

This paper analyzes data on 11,600 students and their teachers who were randomly assigned to different size classes from kindergarten through third grade. Statistical methods are used to adjust for nonrandom attrition and transitions between classes. The main conclusions are (1) on average, performance on standardized tests increases by four percentile points the Žrst year students attend small...

Agricultural economists rely on aggregated data at various levels depending on data availability and the econometric techniques employed. However, the implication of aggregation on economic relationships remains an open question. To examine the impact of aggregation on estimation, Monte Carlo techniques and data are employed on production practices. ADDITIONAL

A class of semi-recursive kernel plug-in estimates of functions depending on multivariate density functionals and their derivatives is considered. The approach enables to estimate the production function, marginal productivity and marginal rate of technical substitution of inputs. The piecewise smoothed approximations of these estimates are proposed. The main parts of the asymptotic mean square...

Introduction: The highly successful Voyager [1,2] and Cassini [3] imaging experiments revealed high quality imaging data that allows for a reasonably good analysis of the crater distributions on the Saturnian satellites [4,5,6]. The observed crater distributions appear to conflict with theoretical crater distributions that are derived from observed projectile populations [6,7]. In order to comp...